obj-$(CONFIG_DGAP) += dgap.o
-
-
-dgap-objs := dgap_driver.o
-
--- /dev/null
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ * Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
+ *
+ * This is shared code between Digi's CVS archive and the
+ * Linux Kernel sources.
+ * Changing the source just for reformatting needlessly breaks
+ * our CVS diff history.
+ *
+ * Send any bug fixes/changes to: Eng.Linux at digi dot com.
+ * Thank you.
+ *
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h> /* For udelay */
+#include <linux/slab.h>
+#include <asm/uaccess.h> /* For copy_from_user/copy_to_user */
+#include <linux/sched.h>
+
+#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
+#include <linux/ctype.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_reg.h>
+#include <asm/io.h> /* For read[bwl]/write[bwl] */
+
+#include <linux/string.h>
+#include <linux/device.h>
+#include <linux/kdev_t.h>
+
+#include "dgap.h"
+
+#define init_MUTEX(sem) sema_init(sem, 1)
+#define DECLARE_MUTEX(name) \
+ struct semaphore name = __SEMAPHORE_INITIALIZER(name, 1)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Digi International, http://www.digi.com");
+MODULE_DESCRIPTION("Driver for the Digi International EPCA PCI based product line");
+MODULE_SUPPORTED_DEVICE("dgap");
+
+/*
+ * insmod command line overrideable parameters
+ *
+ * NOTE: we use a set of macros to create the variables, which allows
+ * us to specify the variable type, name, initial value, and description.
+ */
+PARM_INT(debug, 0x00, 0644, "Driver debugging level");
+PARM_INT(rawreadok, 1, 0644, "Bypass flip buffers on input");
+PARM_INT(trcbuf_size, 0x100000, 0644, "Debugging trace buffer size.");
+
+
+/**************************************************************************
+ *
+ * protos for this file
+ *
+ */
+
+static int dgap_start(void);
+static void dgap_init_globals(void);
+static int dgap_found_board(struct pci_dev *pdev, int id);
+static void dgap_cleanup_board(struct board_t *brd);
+static void dgap_poll_handler(ulong dummy);
+static int dgap_init_pci(void);
+static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
+static void dgap_remove_one(struct pci_dev *dev);
+static int dgap_probe1(struct pci_dev *pdev, int card_type);
+static void dgap_mbuf(struct board_t *brd, const char *fmt, ...);
+static int dgap_do_remap(struct board_t *brd);
+static irqreturn_t dgap_intr(int irq, void *voidbrd);
+
+/* Our function prototypes */
+static int dgap_tty_open(struct tty_struct *tty, struct file *file);
+static void dgap_tty_close(struct tty_struct *tty, struct file *file);
+static int dgap_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch);
+static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
+static int dgap_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo);
+static int dgap_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info);
+static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo);
+static int dgap_tty_digisetedelay(struct tty_struct *tty, int __user *new_info);
+static int dgap_tty_write_room(struct tty_struct* tty);
+static int dgap_tty_chars_in_buffer(struct tty_struct* tty);
+static void dgap_tty_start(struct tty_struct *tty);
+static void dgap_tty_stop(struct tty_struct *tty);
+static void dgap_tty_throttle(struct tty_struct *tty);
+static void dgap_tty_unthrottle(struct tty_struct *tty);
+static void dgap_tty_flush_chars(struct tty_struct *tty);
+static void dgap_tty_flush_buffer(struct tty_struct *tty);
+static void dgap_tty_hangup(struct tty_struct *tty);
+static int dgap_wait_for_drain(struct tty_struct *tty);
+static int dgap_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value);
+static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value);
+static int dgap_tty_digisetcustombaud(struct tty_struct *tty, int __user *new_info);
+static int dgap_tty_digigetcustombaud(struct tty_struct *tty, int __user *retinfo);
+static int dgap_tty_tiocmget(struct tty_struct *tty);
+static int dgap_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear);
+static int dgap_tty_send_break(struct tty_struct *tty, int msec);
+static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout);
+static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf, int count);
+static void dgap_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios);
+static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c);
+static void dgap_tty_send_xchar(struct tty_struct *tty, char ch);
+
+static int dgap_tty_register(struct board_t *brd);
+static int dgap_tty_preinit(void);
+static int dgap_tty_init(struct board_t *);
+static void dgap_tty_post_uninit(void);
+static void dgap_tty_uninit(struct board_t *);
+static void dgap_carrier(struct channel_t *ch);
+static void dgap_input(struct channel_t *ch);
+
+/*
+ * Our function prototypes from dgap_fep5
+ */
+static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds);
+static int dgap_event(struct board_t *bd);
+
+static void dgap_poll_tasklet(unsigned long data);
+static void dgap_cmdb(struct channel_t *ch, uchar cmd, uchar byte1, uchar byte2, uint ncmds);
+static void dgap_cmdw(struct channel_t *ch, uchar cmd, u16 word, uint ncmds);
+static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt);
+static int dgap_param(struct tty_struct *tty);
+static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf, unsigned char *fbuf, int *len);
+static uint dgap_get_custom_baud(struct channel_t *ch);
+static void dgap_firmware_reset_port(struct channel_t *ch);
+
+/*
+ * Function prototypes from dgap_parse.c.
+ */
+static int dgap_gettok(char **in, struct cnode *p);
+static char *dgap_getword(char **in);
+static char *dgap_savestring(char *s);
+static struct cnode *dgap_newnode(int t);
+static int dgap_checknode(struct cnode *p);
+static void dgap_err(char *s);
+
+/*
+ * Function prototypes from dgap_sysfs.h
+ */
+struct board_t;
+struct channel_t;
+struct un_t;
+struct pci_driver;
+struct class_device;
+
+static void dgap_create_ports_sysfiles(struct board_t *bd);
+static void dgap_remove_ports_sysfiles(struct board_t *bd);
+
+static void dgap_create_driver_sysfiles(struct pci_driver *);
+static void dgap_remove_driver_sysfiles(struct pci_driver *);
+
+static int dgap_tty_class_init(void);
+static int dgap_tty_class_destroy(void);
+
+static void dgap_create_tty_sysfs(struct un_t *un, struct device *c);
+static void dgap_remove_tty_sysfs(struct device *c);
+
+/*
+ * Function prototypes from dgap_parse.h
+ */
+static int dgap_parsefile(char **in, int Remove);
+static struct cnode *dgap_find_config(int type, int bus, int slot);
+static uint dgap_config_get_number_of_ports(struct board_t *bd);
+static char *dgap_create_config_string(struct board_t *bd, char *string);
+static char *dgap_get_config_letters(struct board_t *bd, char *string);
+static uint dgap_config_get_useintr(struct board_t *bd);
+static uint dgap_config_get_altpin(struct board_t *bd);
+
+static int dgap_ms_sleep(ulong ms);
+static char *dgap_ioctl_name(int cmd);
+static void dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len);
+static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len);
+static void dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len);
+static void dgap_do_config_load(uchar __user *uaddr, int len);
+static int dgap_after_config_loaded(void);
+static int dgap_finalize_board_init(struct board_t *brd);
+
+
+/* Driver load/unload functions */
+int dgap_init_module(void);
+void dgap_cleanup_module(void);
+
+module_init(dgap_init_module);
+module_exit(dgap_cleanup_module);
+
+
+/*
+ * File operations permitted on Control/Management major.
+ */
+static struct file_operations DgapBoardFops =
+{
+ .owner = THIS_MODULE,
+};
+
+
+/*
+ * Globals
+ */
+static uint dgap_NumBoards;
+static struct board_t *dgap_Board[MAXBOARDS];
+DEFINE_SPINLOCK(dgap_global_lock);
+static ulong dgap_poll_counter;
+static char *dgap_config_buf;
+static int dgap_driver_state = DRIVER_INITIALIZED;
+DEFINE_SPINLOCK(dgap_dl_lock);
+static wait_queue_head_t dgap_dl_wait;
+static int dgap_dl_action;
+static int dgap_poll_tick = 20; /* Poll interval - 20 ms */
+
+/*
+ * Static vars.
+ */
+static int dgap_Major_Control_Registered = FALSE;
+static uint dgap_driver_start = FALSE;
+
+static struct class * dgap_class;
+
+static struct board_t *dgap_BoardsByMajor[256];
+static uchar *dgap_TmpWriteBuf = NULL;
+DECLARE_MUTEX(dgap_TmpWriteSem);
+static uint dgap_count = 500;
+
+/*
+ * Poller stuff
+ */
+DEFINE_SPINLOCK(dgap_poll_lock); /* Poll scheduling lock */
+static ulong dgap_poll_time; /* Time of next poll */
+static uint dgap_poll_stop; /* Used to tell poller to stop */
+static struct timer_list dgap_poll_timer;
+
+
+static struct pci_device_id dgap_pci_tbl[] = {
+ { DIGI_VID, PCI_DEVICE_XEM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+ { DIGI_VID, PCI_DEVICE_CX_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
+ { DIGI_VID, PCI_DEVICE_CX_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
+ { DIGI_VID, PCI_DEVICE_EPCJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
+ { DIGI_VID, PCI_DEVICE_920_2_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
+ { DIGI_VID, PCI_DEVICE_920_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
+ { DIGI_VID, PCI_DEVICE_920_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
+ { DIGI_VID, PCI_DEVICE_XR_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
+ { DIGI_VID, PCI_DEVICE_XRJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
+ { DIGI_VID, PCI_DEVICE_XR_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
+ { DIGI_VID, PCI_DEVICE_XR_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
+ { DIGI_VID, PCI_DEVICE_XR_SAIP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
+ { DIGI_VID, PCI_DEVICE_XR_BULL_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
+ { DIGI_VID, PCI_DEVICE_920_8_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
+ { DIGI_VID, PCI_DEVICE_XEM_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
+ {0,} /* 0 terminated list. */
+};
+MODULE_DEVICE_TABLE(pci, dgap_pci_tbl);
+
+
+/*
+ * A generic list of Product names, PCI Vendor ID, and PCI Device ID.
+ */
+struct board_id {
+ uint config_type;
+ uchar *name;
+ uint maxports;
+ uint dpatype;
+};
+
+static struct board_id dgap_Ids[] =
+{
+ { PPCM, PCI_DEVICE_XEM_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS) },
+ { PCX, PCI_DEVICE_CX_NAME, 128, (T_CX | T_PCIBUS) },
+ { PCX, PCI_DEVICE_CX_IBM_NAME, 128, (T_CX | T_PCIBUS) },
+ { PEPC, PCI_DEVICE_EPCJ_NAME, 224, (T_EPC | T_PCIBUS) },
+ { APORT2_920P, PCI_DEVICE_920_2_NAME, 2, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { APORT4_920P, PCI_DEVICE_920_4_NAME, 4, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { APORT8_920P, PCI_DEVICE_920_8_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { PAPORT8, PCI_DEVICE_XR_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { PAPORT8, PCI_DEVICE_XRJ_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { PAPORT8, PCI_DEVICE_XR_422_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { PAPORT8, PCI_DEVICE_XR_IBM_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { PAPORT8, PCI_DEVICE_XR_SAIP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { PAPORT8, PCI_DEVICE_XR_BULL_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { APORT8_920P, PCI_DEVICE_920_8_HP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
+ { PPCM, PCI_DEVICE_XEM_HP_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS) },
+ {0,} /* 0 terminated list. */
+};
+
+static struct pci_driver dgap_driver = {
+ .name = "dgap",
+ .probe = dgap_init_one,
+ .id_table = dgap_pci_tbl,
+ .remove = dgap_remove_one,
+};
+
+
+static char *dgap_state_text[] = {
+ "Board Failed",
+ "Configuration for board not found.\n\t\t\tRun mpi to configure board.",
+ "Board Found",
+ "Need Reset",
+ "Finished Reset",
+ "Need Config",
+ "Finished Config",
+ "Need Device Creation",
+ "Requested Device Creation",
+ "Finished Device Creation",
+ "Need BIOS Load",
+ "Requested BIOS",
+ "Doing BIOS Load",
+ "Finished BIOS Load",
+ "Need FEP Load",
+ "Requested FEP",
+ "Doing FEP Load",
+ "Finished FEP Load",
+ "Requested PROC creation",
+ "Finished PROC creation",
+ "Board READY",
+};
+
+static char *dgap_driver_state_text[] = {
+ "Driver Initialized",
+ "Driver needs configuration load.",
+ "Driver requested configuration from download daemon.",
+ "Driver Ready."
+};
+
+/*
+ * Default transparent print information.
+ */
+static struct digi_t dgap_digi_init = {
+ .digi_flags = DIGI_COOK, /* Flags */
+ .digi_maxcps = 100, /* Max CPS */
+ .digi_maxchar = 50, /* Max chars in print queue */
+ .digi_bufsize = 100, /* Printer buffer size */
+ .digi_onlen = 4, /* size of printer on string */
+ .digi_offlen = 4, /* size of printer off string */
+ .digi_onstr = "\033[5i", /* ANSI printer on string ] */
+ .digi_offstr = "\033[4i", /* ANSI printer off string ] */
+ .digi_term = "ansi" /* default terminal type */
+};
+
+
+/*
+ * Define a local default termios struct. All ports will be created
+ * with this termios initially.
+ *
+ * This defines a raw port at 9600 baud, 8 data bits, no parity,
+ * 1 stop bit.
+ */
+
+static struct ktermios DgapDefaultTermios =
+{
+ .c_iflag = (DEFAULT_IFLAGS), /* iflags */
+ .c_oflag = (DEFAULT_OFLAGS), /* oflags */
+ .c_cflag = (DEFAULT_CFLAGS), /* cflags */
+ .c_lflag = (DEFAULT_LFLAGS), /* lflags */
+ .c_cc = INIT_C_CC,
+ .c_line = 0,
+};
+
+static const struct tty_operations dgap_tty_ops = {
+ .open = dgap_tty_open,
+ .close = dgap_tty_close,
+ .write = dgap_tty_write,
+ .write_room = dgap_tty_write_room,
+ .flush_buffer = dgap_tty_flush_buffer,
+ .chars_in_buffer = dgap_tty_chars_in_buffer,
+ .flush_chars = dgap_tty_flush_chars,
+ .ioctl = dgap_tty_ioctl,
+ .set_termios = dgap_tty_set_termios,
+ .stop = dgap_tty_stop,
+ .start = dgap_tty_start,
+ .throttle = dgap_tty_throttle,
+ .unthrottle = dgap_tty_unthrottle,
+ .hangup = dgap_tty_hangup,
+ .put_char = dgap_tty_put_char,
+ .tiocmget = dgap_tty_tiocmget,
+ .tiocmset = dgap_tty_tiocmset,
+ .break_ctl = dgap_tty_send_break,
+ .wait_until_sent = dgap_tty_wait_until_sent,
+ .send_xchar = dgap_tty_send_xchar
+};
+
+/*
+ * Our needed internal static variables from dgap_parse.c
+ */
+static struct cnode dgap_head;
+#define MAXCWORD 200
+static char dgap_cword[MAXCWORD];
+
+struct toklist {
+ int token;
+ char *string;
+};
+
+static struct toklist dgap_tlist[] = {
+ { BEGIN, "config_begin" },
+ { END, "config_end" },
+ { BOARD, "board" },
+ { PCX, "Digi_AccelePort_C/X_PCI" }, /* C/X_PCI */
+ { PEPC, "Digi_AccelePort_EPC/X_PCI" }, /* EPC/X_PCI */
+ { PPCM, "Digi_AccelePort_Xem_PCI" }, /* PCI/Xem */
+ { APORT2_920P, "Digi_AccelePort_2r_920_PCI" },
+ { APORT4_920P, "Digi_AccelePort_4r_920_PCI" },
+ { APORT8_920P, "Digi_AccelePort_8r_920_PCI" },
+ { PAPORT4, "Digi_AccelePort_4r_PCI(EIA-232/RS-422)" },
+ { PAPORT8, "Digi_AccelePort_8r_PCI(EIA-232/RS-422)" },
+ { IO, "io" },
+ { PCIINFO, "pciinfo" },
+ { LINE, "line" },
+ { CONC, "conc" },
+ { CONC, "concentrator" },
+ { CX, "cx" },
+ { CX, "ccon" },
+ { EPC, "epccon" },
+ { EPC, "epc" },
+ { MOD, "module" },
+ { ID, "id" },
+ { STARTO, "start" },
+ { SPEED, "speed" },
+ { CABLE, "cable" },
+ { CONNECT, "connect" },
+ { METHOD, "method" },
+ { STATUS, "status" },
+ { CUSTOM, "Custom" },
+ { BASIC, "Basic" },
+ { MEM, "mem" },
+ { MEM, "memory" },
+ { PORTS, "ports" },
+ { MODEM, "modem" },
+ { NPORTS, "nports" },
+ { TTYN, "ttyname" },
+ { CU, "cuname" },
+ { PRINT, "prname" },
+ { CMAJOR, "major" },
+ { ALTPIN, "altpin" },
+ { USEINTR, "useintr" },
+ { TTSIZ, "ttysize" },
+ { CHSIZ, "chsize" },
+ { BSSIZ, "boardsize" },
+ { UNTSIZ, "schedsize" },
+ { F2SIZ, "f2200size" },
+ { VPSIZ, "vpixsize" },
+ { 0, NULL }
+};
+
+/************************************************************************
+ *
+ * Driver load/unload functions
+ *
+ ************************************************************************/
+
+/*
+ * init_module()
+ *
+ * Module load. This is where it all starts.
+ */
+int dgap_init_module(void)
+{
+ int rc = 0;
+
+ APR(("%s, Digi International Part Number %s\n", DG_NAME, DG_PART));
+
+ /*
+ * Initialize global stuff
+ */
+ rc = dgap_start();
+
+ if (rc < 0) {
+ return(rc);
+ }
+
+ /*
+ * Find and configure all the cards
+ */
+ rc = dgap_init_pci();
+
+ /*
+ * If something went wrong in the scan, bail out of driver.
+ */
+ if (rc < 0) {
+ /* Only unregister the pci driver if it was actually registered. */
+ if (dgap_NumBoards)
+ pci_unregister_driver(&dgap_driver);
+ else
+ printk("WARNING: dgap driver load failed. No DGAP boards found.\n");
+
+ dgap_cleanup_module();
+ }
+ else {
+ dgap_create_driver_sysfiles(&dgap_driver);
+ }
+
+ DPR_INIT(("Finished init_module. Returning %d\n", rc));
+ return (rc);
+}
+
+
+/*
+ * Start of driver.
+ */
+static int dgap_start(void)
+{
+ int rc = 0;
+ unsigned long flags;
+
+ if (dgap_driver_start == FALSE) {
+
+ dgap_driver_start = TRUE;
+
+ /* make sure that the globals are init'd before we do anything else */
+ dgap_init_globals();
+
+ dgap_NumBoards = 0;
+
+ APR(("For the tools package or updated drivers please visit http://www.digi.com\n"));
+
+ /*
+ * Register our base character device into the kernel.
+ * This allows the download daemon to connect to the downld device
+ * before any of the boards are init'ed.
+ */
+ if (!dgap_Major_Control_Registered) {
+ /*
+ * Register management/dpa devices
+ */
+ rc = register_chrdev(DIGI_DGAP_MAJOR, "dgap", &DgapBoardFops);
+ if (rc < 0) {
+ APR(("Can't register dgap driver device (%d)\n", rc));
+ return (rc);
+ }
+
+ dgap_class = class_create(THIS_MODULE, "dgap_mgmt");
+ device_create(dgap_class, NULL,
+ MKDEV(DIGI_DGAP_MAJOR, 0),
+ NULL, "dgap_mgmt");
+ device_create(dgap_class, NULL,
+ MKDEV(DIGI_DGAP_MAJOR, 1),
+ NULL, "dgap_downld");
+ dgap_Major_Control_Registered = TRUE;
+ }
+
+ /*
+ * Init any global tty stuff.
+ */
+ rc = dgap_tty_preinit();
+
+ if (rc < 0) {
+ APR(("tty preinit - not enough memory (%d)\n", rc));
+ return(rc);
+ }
+
+ /* Start the poller */
+ DGAP_LOCK(dgap_poll_lock, flags);
+ init_timer(&dgap_poll_timer);
+ dgap_poll_timer.function = dgap_poll_handler;
+ dgap_poll_timer.data = 0;
+ dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
+ dgap_poll_timer.expires = dgap_poll_time;
+ DGAP_UNLOCK(dgap_poll_lock, flags);
+
+ add_timer(&dgap_poll_timer);
+
+ dgap_driver_state = DRIVER_NEED_CONFIG_LOAD;
+ }
+
+ return (rc);
+}
+
+
+/*
+ * Register pci driver, and return how many boards we have.
+ */
+static int dgap_init_pci(void)
+{
+ return pci_register_driver(&dgap_driver);
+}
+
+
+/* returns count (>= 0), or negative on error */
+static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ int rc;
+
+ /* wake up and enable device */
+ rc = pci_enable_device(pdev);
+
+ if (rc < 0) {
+ rc = -EIO;
+ } else {
+ rc = dgap_probe1(pdev, ent->driver_data);
+ if (rc == 0) {
+ dgap_NumBoards++;
+ DPR_INIT(("Incrementing numboards to %d\n", dgap_NumBoards));
+ }
+ }
+ return rc;
+}
+
+
+static int dgap_probe1(struct pci_dev *pdev, int card_type)
+{
+ return dgap_found_board(pdev, card_type);
+}
+
+
+static void dgap_remove_one(struct pci_dev *dev)
+{
+ /* Do Nothing */
+}
+
+
+/*
+ * dgap_cleanup_module()
+ *
+ * Module unload. This is where it all ends.
+ */
+void dgap_cleanup_module(void)
+{
+ int i;
+ ulong lock_flags;
+
+ DGAP_LOCK(dgap_poll_lock, lock_flags);
+ dgap_poll_stop = 1;
+ DGAP_UNLOCK(dgap_poll_lock, lock_flags);
+
+ /* Turn off poller right away. */
+ del_timer_sync( &dgap_poll_timer);
+
+ dgap_remove_driver_sysfiles(&dgap_driver);
+
+
+ if (dgap_Major_Control_Registered) {
+ device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
+ device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 1));
+ class_destroy(dgap_class);
+ unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
+ }
+
+ kfree(dgap_config_buf);
+
+ for (i = 0; i < dgap_NumBoards; ++i) {
+ dgap_remove_ports_sysfiles(dgap_Board[i]);
+ dgap_tty_uninit(dgap_Board[i]);
+ dgap_cleanup_board(dgap_Board[i]);
+ }
+
+ dgap_tty_post_uninit();
+
+#if defined(DGAP_TRACER)
+ /* last thing, make sure we release the tracebuffer */
+ dgap_tracer_free();
+#endif
+ if (dgap_NumBoards)
+ pci_unregister_driver(&dgap_driver);
+}
+
+
+/*
+ * dgap_cleanup_board()
+ *
+ * Free all the memory associated with a board
+ */
+static void dgap_cleanup_board(struct board_t *brd)
+{
+ int i = 0;
+
+ if(!brd || brd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ if (brd->intr_used && brd->irq)
+ free_irq(brd->irq, brd);
+
+ tasklet_kill(&brd->helper_tasklet);
+
+ if (brd->re_map_port) {
+ release_mem_region(brd->membase + 0x200000, 0x200000);
+ iounmap(brd->re_map_port);
+ brd->re_map_port = NULL;
+ }
+
+ if (brd->re_map_membase) {
+ release_mem_region(brd->membase, 0x200000);
+ iounmap(brd->re_map_membase);
+ brd->re_map_membase = NULL;
+ }
+
+ if (brd->msgbuf_head) {
+ unsigned long flags;
+
+ DGAP_LOCK(dgap_global_lock, flags);
+ brd->msgbuf = NULL;
+ printk("%s", brd->msgbuf_head);
+ kfree(brd->msgbuf_head);
+ brd->msgbuf_head = NULL;
+ DGAP_UNLOCK(dgap_global_lock, flags);
+ }
+
+ /* Free all allocated channels structs */
+ for (i = 0; i < MAXPORTS ; i++) {
+ if (brd->channels[i]) {
+ kfree(brd->channels[i]);
+ brd->channels[i] = NULL;
+ }
+ }
+
+ kfree(brd->flipbuf);
+ kfree(brd->flipflagbuf);
+
+ dgap_Board[brd->boardnum] = NULL;
+
+ kfree(brd);
+}
+
+
+/*
+ * dgap_found_board()
+ *
+ * A board has been found, init it.
+ */
+static int dgap_found_board(struct pci_dev *pdev, int id)
+{
+ struct board_t *brd;
+ unsigned int pci_irq;
+ int i = 0;
+ unsigned long flags;
+
+ /* get the board structure and prep it */
+ brd = dgap_Board[dgap_NumBoards] =
+ (struct board_t *) kzalloc(sizeof(struct board_t), GFP_KERNEL);
+ if (!brd) {
+ APR(("memory allocation for board structure failed\n"));
+ return(-ENOMEM);
+ }
+
+ /* make a temporary message buffer for the boot messages */
+ brd->msgbuf = brd->msgbuf_head =
+ (char *) kzalloc(sizeof(char) * 8192, GFP_KERNEL);
+ if(!brd->msgbuf) {
+ kfree(brd);
+ APR(("memory allocation for board msgbuf failed\n"));
+ return(-ENOMEM);
+ }
+
+ /* store the info for the board we've found */
+ brd->magic = DGAP_BOARD_MAGIC;
+ brd->boardnum = dgap_NumBoards;
+ brd->firstminor = 0;
+ brd->vendor = dgap_pci_tbl[id].vendor;
+ brd->device = dgap_pci_tbl[id].device;
+ brd->pdev = pdev;
+ brd->pci_bus = pdev->bus->number;
+ brd->pci_slot = PCI_SLOT(pdev->devfn);
+ brd->name = dgap_Ids[id].name;
+ brd->maxports = dgap_Ids[id].maxports;
+ brd->type = dgap_Ids[id].config_type;
+ brd->dpatype = dgap_Ids[id].dpatype;
+ brd->dpastatus = BD_NOFEP;
+ init_waitqueue_head(&brd->state_wait);
+
+ DGAP_SPINLOCK_INIT(brd->bd_lock);
+
+ brd->state = BOARD_FOUND;
+ brd->runwait = 0;
+ brd->inhibit_poller = FALSE;
+ brd->wait_for_bios = 0;
+ brd->wait_for_fep = 0;
+
+ for (i = 0; i < MAXPORTS; i++) {
+ brd->channels[i] = NULL;
+ }
+
+ /* store which card & revision we have */
+ pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
+ pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
+
+ pci_irq = pdev->irq;
+ brd->irq = pci_irq;
+
+ /* get the PCI Base Address Registers */
+
+ /* Xr Jupiter and EPC use BAR 2 */
+ if (brd->device == PCI_DEVICE_XRJ_DID || brd->device == PCI_DEVICE_EPCJ_DID) {
+ brd->membase = pci_resource_start(pdev, 2);
+ brd->membase_end = pci_resource_end(pdev, 2);
+ }
+ /* Everyone else uses BAR 0 */
+ else {
+ brd->membase = pci_resource_start(pdev, 0);
+ brd->membase_end = pci_resource_end(pdev, 0);
+ }
+
+ if (!brd->membase) {
+ APR(("card has no PCI IO resources, failing board.\n"));
+ return -ENODEV;
+ }
+
+ if (brd->membase & 1)
+ brd->membase &= ~3;
+ else
+ brd->membase &= ~15;
+
+ /*
+ * On the PCI boards, there is no IO space allocated
+ * The I/O registers will be in the first 3 bytes of the
+ * upper 2MB of the 4MB memory space. The board memory
+ * will be mapped into the low 2MB of the 4MB memory space
+ */
+ brd->port = brd->membase + PCI_IO_OFFSET;
+ brd->port_end = brd->port + PCI_IO_SIZE;
+
+
+ /*
+ * Special initialization for non-PLX boards
+ */
+ if (brd->device != PCI_DEVICE_XRJ_DID && brd->device != PCI_DEVICE_EPCJ_DID) {
+ unsigned short cmd;
+
+ pci_write_config_byte(pdev, 0x40, 0);
+ pci_write_config_byte(pdev, 0x46, 0);
+
+ /* Limit burst length to 2 doubleword transactions */
+ pci_write_config_byte(pdev, 0x42, 1);
+
+ /*
+ * Enable IO and mem if not already done.
+ * This was needed for support on Itanium.
+ */
+ pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+ cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
+ pci_write_config_word(pdev, PCI_COMMAND, cmd);
+ }
+
+ /* init our poll helper tasklet */
+ tasklet_init(&brd->helper_tasklet, dgap_poll_tasklet, (unsigned long) brd);
+
+ /* Log the information about the board */
+ dgap_mbuf(brd, DRVSTR": board %d: %s (rev %d), irq %d\n",
+ dgap_NumBoards, brd->name, brd->rev, brd->irq);
+
+ DPR_INIT(("dgap_scan(%d) - printing out the msgbuf\n", i));
+ DGAP_LOCK(dgap_global_lock, flags);
+ brd->msgbuf = NULL;
+ printk("%s", brd->msgbuf_head);
+ kfree(brd->msgbuf_head);
+ brd->msgbuf_head = NULL;
+ DGAP_UNLOCK(dgap_global_lock, flags);
+
+ i = dgap_do_remap(brd);
+ if (i)
+ brd->state = BOARD_FAILED;
+ else
+ brd->state = NEED_RESET;
+
+ return(0);
+}
+
+
+static int dgap_finalize_board_init(struct board_t *brd) {
+
+ int rc;
+
+ DPR_INIT(("dgap_finalize_board_init() - start\n"));
+
+ if (!brd || brd->magic != DGAP_BOARD_MAGIC)
+ return(-ENODEV);
+
+ DPR_INIT(("dgap_finalize_board_init() - start #2\n"));
+
+ brd->use_interrupts = dgap_config_get_useintr(brd);
+
+ /*
+ * Set up our interrupt handler if we are set to do interrupts.
+ */
+ if (brd->use_interrupts && brd->irq) {
+
+ rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd);
+
+ if (rc) {
+ dgap_mbuf(brd, DRVSTR": Failed to hook IRQ %d. Board will work in poll mode.\n",
+ brd->irq);
+ brd->intr_used = 0;
+ }
+ else
+ brd->intr_used = 1;
+ } else {
+ brd->intr_used = 0;
+ }
+
+ return(0);
+}
+
+
+/*
+ * Remap PCI memory.
+ */
+static int dgap_do_remap(struct board_t *brd)
+{
+ if (!brd || brd->magic != DGAP_BOARD_MAGIC)
+ return -ENXIO;
+
+ if (!request_mem_region(brd->membase, 0x200000, "dgap")) {
+ APR(("dgap: mem_region %lx already in use.\n", brd->membase));
+ return -ENOMEM;
+ }
+
+ if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000, "dgap")) {
+ APR(("dgap: mem_region IO %lx already in use.\n",
+ brd->membase + PCI_IO_OFFSET));
+ release_mem_region(brd->membase, 0x200000);
+ return -ENOMEM;
+ }
+
+ brd->re_map_membase = ioremap(brd->membase, 0x200000);
+ if (!brd->re_map_membase) {
+ APR(("dgap: ioremap mem %lx cannot be mapped.\n", brd->membase));
+ release_mem_region(brd->membase, 0x200000);
+ release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
+ return -ENOMEM;
+ }
+
+ brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
+ if (!brd->re_map_port) {
+ release_mem_region(brd->membase, 0x200000);
+ release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
+ iounmap(brd->re_map_membase);
+ APR(("dgap: ioremap IO mem %lx cannot be mapped.\n",
+ brd->membase + PCI_IO_OFFSET));
+ return -ENOMEM;
+ }
+
+ DPR_INIT(("remapped io: 0x%p remapped mem: 0x%p\n",
+ brd->re_map_port, brd->re_map_membase));
+ return 0;
+}
+
+
+/*****************************************************************************
+*
+* Function:
+*
+* dgap_poll_handler
+*
+* Author:
+*
+* Scott H Kilau
+*
+* Parameters:
+*
+* dummy -- ignored
+*
+* Return Values:
+*
+* none
+*
+* Description:
+*
+* As each timer expires, it determines (a) whether the "transmit"
+* waiter needs to be woken up, and (b) whether the poller needs to
+* be rescheduled.
+*
+******************************************************************************/
+
+static void dgap_poll_handler(ulong dummy)
+{
+ int i;
+ struct board_t *brd;
+ unsigned long lock_flags;
+ unsigned long lock_flags2;
+ ulong new_time;
+
+ dgap_poll_counter++;
+
+
+ /*
+ * If driver needs the config file still,
+ * keep trying to wake up the downloader to
+ * send us the file.
+ */
+ if (dgap_driver_state == DRIVER_NEED_CONFIG_LOAD) {
+ /*
+ * Signal downloader, its got some work to do.
+ */
+ DGAP_LOCK(dgap_dl_lock, lock_flags2);
+ if (dgap_dl_action != 1) {
+ dgap_dl_action = 1;
+ wake_up_interruptible(&dgap_dl_wait);
+ }
+ DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+ goto schedule_poller;
+ }
+ /*
+ * Do not start the board state machine until
+ * driver tells us its up and running, and has
+ * everything it needs.
+ */
+ else if (dgap_driver_state != DRIVER_READY) {
+ goto schedule_poller;
+ }
+
+ /*
+ * If we have just 1 board, or the system is not SMP,
+ * then use the typical old style poller.
+ * Otherwise, use our new tasklet based poller, which should
+ * speed things up for multiple boards.
+ */
+ if ( (dgap_NumBoards == 1) || (num_online_cpus() <= 1) ) {
+ for (i = 0; i < dgap_NumBoards; i++) {
+
+ brd = dgap_Board[i];
+
+ if (brd->state == BOARD_FAILED) {
+ continue;
+ }
+ if (!brd->intr_running) {
+ /* Call the real board poller directly */
+ dgap_poll_tasklet((unsigned long) brd);
+ }
+ }
+ }
+ else {
+ /* Go thru each board, kicking off a tasklet for each if needed */
+ for (i = 0; i < dgap_NumBoards; i++) {
+ brd = dgap_Board[i];
+
+ /*
+ * Attempt to grab the board lock.
+ *
+ * If we can't get it, no big deal, the next poll will get it.
+ * Basically, I just really don't want to spin in here, because I want
+ * to kick off my tasklets as fast as I can, and then get out the poller.
+ */
+ if (!spin_trylock(&brd->bd_lock)) {
+ continue;
+ }
+
+ /* If board is in a failed state, don't bother scheduling a tasklet */
+ if (brd->state == BOARD_FAILED) {
+ spin_unlock(&brd->bd_lock);
+ continue;
+ }
+
+ /* Schedule a poll helper task */
+ if (!brd->intr_running) {
+ tasklet_schedule(&brd->helper_tasklet);
+ }
+
+ /*
+ * Can't do DGAP_UNLOCK here, as we don't have
+ * lock_flags because we did a trylock above.
+ */
+ spin_unlock(&brd->bd_lock);
+ }
+ }
+
+schedule_poller:
+
+ /*
+ * Schedule ourself back at the nominal wakeup interval.
+ */
+ DGAP_LOCK(dgap_poll_lock, lock_flags );
+ dgap_poll_time += dgap_jiffies_from_ms(dgap_poll_tick);
+
+ new_time = dgap_poll_time - jiffies;
+
+ if ((ulong) new_time >= 2 * dgap_poll_tick) {
+ dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
+ }
+
+ dgap_poll_timer.function = dgap_poll_handler;
+ dgap_poll_timer.data = 0;
+ dgap_poll_timer.expires = dgap_poll_time;
+ DGAP_UNLOCK(dgap_poll_lock, lock_flags );
+
+ if (!dgap_poll_stop)
+ add_timer(&dgap_poll_timer);
+}
+
+
+
+
+/*
+ * dgap_intr()
+ *
+ * Driver interrupt handler.
+ */
+static irqreturn_t dgap_intr(int irq, void *voidbrd)
+{
+ struct board_t *brd = (struct board_t *) voidbrd;
+
+ if (!brd) {
+ APR(("Received interrupt (%d) with null board associated\n", irq));
+ return IRQ_NONE;
+ }
+
+ /*
+ * Check to make sure its for us.
+ */
+ if (brd->magic != DGAP_BOARD_MAGIC) {
+ APR(("Received interrupt (%d) with a board pointer that wasn't ours!\n", irq));
+ return IRQ_NONE;
+ }
+
+ brd->intr_count++;
+
+ /*
+ * Schedule tasklet to run at a better time.
+ */
+ tasklet_schedule(&brd->helper_tasklet);
+ return IRQ_HANDLED;
+}
+
+
+/*
+ * dgap_init_globals()
+ *
+ * This is where we initialize the globals from the static insmod
+ * configuration variables. These are declared near the head of
+ * this file.
+ */
+static void dgap_init_globals(void)
+{
+ int i = 0;
+
+ dgap_rawreadok = rawreadok;
+ dgap_trcbuf_size = trcbuf_size;
+ dgap_debug = debug;
+
+ for (i = 0; i < MAXBOARDS; i++) {
+ dgap_Board[i] = NULL;
+ }
+
+ init_timer( &dgap_poll_timer );
+
+ init_waitqueue_head(&dgap_dl_wait);
+ dgap_dl_action = 0;
+}
+
+
+/************************************************************************
+ *
+ * Utility functions
+ *
+ ************************************************************************/
+
+
+/*
+ * dgap_mbuf()
+ *
+ * Used to print to the message buffer during board init.
+ */
+static void dgap_mbuf(struct board_t *brd, const char *fmt, ...) {
+ va_list ap;
+ char buf[1024];
+ int i;
+ unsigned long flags;
+ size_t length;
+
+ DGAP_LOCK(dgap_global_lock, flags);
+
+ /* Format buf using fmt and arguments contained in ap. */
+ va_start(ap, fmt);
+ i = vsnprintf(buf, sizeof(buf), fmt, ap);
+ va_end(ap);
+
+ DPR((buf));
+
+ if (!brd || !brd->msgbuf) {
+ printk("%s", buf);
+ DGAP_UNLOCK(dgap_global_lock, flags);
+ return;
+ }
+
+ length = strlen(buf) + 1;
+ if (brd->msgbuf - brd->msgbuf_head < length)
+ length = brd->msgbuf - brd->msgbuf_head;
+ memcpy(brd->msgbuf, buf, length);
+ brd->msgbuf += length;
+
+ DGAP_UNLOCK(dgap_global_lock, flags);
+}
+
+
+/*
+ * dgap_ms_sleep()
+ *
+ * Put the driver to sleep for x ms's
+ *
+ * Returns 0 if timed out, !0 (showing signal) if interrupted by a signal.
+ */
+static int dgap_ms_sleep(ulong ms)
+{
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout((ms * HZ) / 1000);
+ return (signal_pending(current));
+}
+
+
+
+/*
+ * dgap_ioctl_name() : Returns a text version of each ioctl value.
+ */
+static char *dgap_ioctl_name(int cmd)
+{
+ switch(cmd) {
+
+ case TCGETA: return("TCGETA");
+ case TCGETS: return("TCGETS");
+ case TCSETA: return("TCSETA");
+ case TCSETS: return("TCSETS");
+ case TCSETAW: return("TCSETAW");
+ case TCSETSW: return("TCSETSW");
+ case TCSETAF: return("TCSETAF");
+ case TCSETSF: return("TCSETSF");
+ case TCSBRK: return("TCSBRK");
+ case TCXONC: return("TCXONC");
+ case TCFLSH: return("TCFLSH");
+ case TIOCGSID: return("TIOCGSID");
+
+ case TIOCGETD: return("TIOCGETD");
+ case TIOCSETD: return("TIOCSETD");
+ case TIOCGWINSZ: return("TIOCGWINSZ");
+ case TIOCSWINSZ: return("TIOCSWINSZ");
+
+ case TIOCMGET: return("TIOCMGET");
+ case TIOCMSET: return("TIOCMSET");
+ case TIOCMBIS: return("TIOCMBIS");
+ case TIOCMBIC: return("TIOCMBIC");
+
+ /* from digi.h */
+ case DIGI_SETA: return("DIGI_SETA");
+ case DIGI_SETAW: return("DIGI_SETAW");
+ case DIGI_SETAF: return("DIGI_SETAF");
+ case DIGI_SETFLOW: return("DIGI_SETFLOW");
+ case DIGI_SETAFLOW: return("DIGI_SETAFLOW");
+ case DIGI_GETFLOW: return("DIGI_GETFLOW");
+ case DIGI_GETAFLOW: return("DIGI_GETAFLOW");
+ case DIGI_GETA: return("DIGI_GETA");
+ case DIGI_GEDELAY: return("DIGI_GEDELAY");
+ case DIGI_SEDELAY: return("DIGI_SEDELAY");
+ case DIGI_GETCUSTOMBAUD: return("DIGI_GETCUSTOMBAUD");
+ case DIGI_SETCUSTOMBAUD: return("DIGI_SETCUSTOMBAUD");
+ case TIOCMODG: return("TIOCMODG");
+ case TIOCMODS: return("TIOCMODS");
+ case TIOCSDTR: return("TIOCSDTR");
+ case TIOCCDTR: return("TIOCCDTR");
+
+ default: return("unknown");
+ }
+}
+
+/************************************************************************
+ *
+ * TTY Initialization/Cleanup Functions
+ *
+ ************************************************************************/
+
+/*
+ * dgap_tty_preinit()
+ *
+ * Initialize any global tty related data before we download any boards.
+ */
+static int dgap_tty_preinit(void)
+{
+ unsigned long flags;
+
+ DGAP_LOCK(dgap_global_lock, flags);
+
+ /*
+ * Allocate a buffer for doing the copy from user space to
+ * kernel space in dgap_input(). We only use one buffer and
+ * control access to it with a semaphore. If we are paging, we
+ * are already in trouble so one buffer won't hurt much anyway.
+ */
+ dgap_TmpWriteBuf = kmalloc(WRITEBUFLEN, GFP_ATOMIC);
+
+ if (!dgap_TmpWriteBuf) {
+ DGAP_UNLOCK(dgap_global_lock, flags);
+ DPR_INIT(("unable to allocate tmp write buf"));
+ return (-ENOMEM);
+ }
+
+ DGAP_UNLOCK(dgap_global_lock, flags);
+ return(0);
+}
+
+
+/*
+ * dgap_tty_register()
+ *
+ * Init the tty subsystem for this board.
+ */
+static int dgap_tty_register(struct board_t *brd)
+{
+ int rc = 0;
+
+ DPR_INIT(("tty_register start"));
+
+ brd->SerialDriver = alloc_tty_driver(MAXPORTS);
+
+ snprintf(brd->SerialName, MAXTTYNAMELEN, "tty_dgap_%d_", brd->boardnum);
+ brd->SerialDriver->name = brd->SerialName;
+ brd->SerialDriver->name_base = 0;
+ brd->SerialDriver->major = 0;
+ brd->SerialDriver->minor_start = 0;
+ brd->SerialDriver->type = TTY_DRIVER_TYPE_SERIAL;
+ brd->SerialDriver->subtype = SERIAL_TYPE_NORMAL;
+ brd->SerialDriver->init_termios = DgapDefaultTermios;
+ brd->SerialDriver->driver_name = DRVSTR;
+ brd->SerialDriver->flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
+
+ /* The kernel wants space to store pointers to tty_structs */
+ brd->SerialDriver->ttys = kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
+ if (!brd->SerialDriver->ttys)
+ return(-ENOMEM);
+
+ /*
+ * Entry points for driver. Called by the kernel from
+ * tty_io.c and n_tty.c.
+ */
+ tty_set_operations(brd->SerialDriver, &dgap_tty_ops);
+
+ /*
+ * If we're doing transparent print, we have to do all of the above
+ * again, separately so we don't get the LD confused about what major
+ * we are when we get into the dgap_tty_open() routine.
+ */
+ brd->PrintDriver = alloc_tty_driver(MAXPORTS);
+
+ snprintf(brd->PrintName, MAXTTYNAMELEN, "pr_dgap_%d_", brd->boardnum);
+ brd->PrintDriver->name = brd->PrintName;
+ brd->PrintDriver->name_base = 0;
+ brd->PrintDriver->major = 0;
+ brd->PrintDriver->minor_start = 0;
+ brd->PrintDriver->type = TTY_DRIVER_TYPE_SERIAL;
+ brd->PrintDriver->subtype = SERIAL_TYPE_NORMAL;
+ brd->PrintDriver->init_termios = DgapDefaultTermios;
+ brd->PrintDriver->driver_name = DRVSTR;
+ brd->PrintDriver->flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
+
+ /* The kernel wants space to store pointers to tty_structs */
+ brd->PrintDriver->ttys = kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
+ if (!brd->PrintDriver->ttys)
+ return(-ENOMEM);
+
+ /*
+ * Entry points for driver. Called by the kernel from
+ * tty_io.c and n_tty.c.
+ */
+ tty_set_operations(brd->PrintDriver, &dgap_tty_ops);
+
+ if (!brd->dgap_Major_Serial_Registered) {
+ /* Register tty devices */
+ rc = tty_register_driver(brd->SerialDriver);
+ if (rc < 0) {
+ APR(("Can't register tty device (%d)\n", rc));
+ return(rc);
+ }
+ brd->dgap_Major_Serial_Registered = TRUE;
+ dgap_BoardsByMajor[brd->SerialDriver->major] = brd;
+ brd->dgap_Serial_Major = brd->SerialDriver->major;
+ }
+
+ if (!brd->dgap_Major_TransparentPrint_Registered) {
+ /* Register Transparent Print devices */
+ rc = tty_register_driver(brd->PrintDriver);
+ if (rc < 0) {
+ APR(("Can't register Transparent Print device (%d)\n", rc));
+ return(rc);
+ }
+ brd->dgap_Major_TransparentPrint_Registered = TRUE;
+ dgap_BoardsByMajor[brd->PrintDriver->major] = brd;
+ brd->dgap_TransparentPrint_Major = brd->PrintDriver->major;
+ }
+
+ DPR_INIT(("DGAP REGISTER TTY: MAJORS: %d %d\n", brd->SerialDriver->major,
+ brd->PrintDriver->major));
+
+ return (rc);
+}
+
+
+/*
+ * dgap_tty_init()
+ *
+ * Init the tty subsystem. Called once per board after board has been
+ * downloaded and init'ed.
+ */
+static int dgap_tty_init(struct board_t *brd)
+{
+ int i;
+ int tlw;
+ uint true_count = 0;
+ uchar *vaddr;
+ uchar modem = 0;
+ struct channel_t *ch;
+ struct bs_t *bs;
+ struct cm_t *cm;
+
+ if (!brd)
+ return (-ENXIO);
+
+ DPR_INIT(("dgap_tty_init start\n"));
+
+ /*
+ * Initialize board structure elements.
+ */
+
+ vaddr = brd->re_map_membase;
+ true_count = readw((vaddr + NCHAN));
+
+ brd->nasync = dgap_config_get_number_of_ports(brd);
+
+ if (!brd->nasync) {
+ brd->nasync = brd->maxports;
+ }
+
+ if (brd->nasync > brd->maxports) {
+ brd->nasync = brd->maxports;
+ }
+
+ if (true_count != brd->nasync) {
+ if ((brd->type == PPCM) && (true_count == 64)) {
+ APR(("***WARNING**** %s configured for %d ports, has %d ports.\nPlease make SURE the EBI cable running from the card\nto each EM module is plugged into EBI IN!\n",
+ brd->name, brd->nasync, true_count));
+ }
+ else if ((brd->type == PPCM) && (true_count == 0)) {
+ APR(("***WARNING**** %s configured for %d ports, has %d ports.\nPlease make SURE the EBI cable running from the card\nto each EM module is plugged into EBI IN!\n",
+ brd->name, brd->nasync, true_count));
+ }
+ else {
+ APR(("***WARNING**** %s configured for %d ports, has %d ports.\n",
+ brd->name, brd->nasync, true_count));
+ }
+
+ brd->nasync = true_count;
+
+ /* If no ports, don't bother going any further */
+ if (!brd->nasync) {
+ brd->state = BOARD_FAILED;
+ brd->dpastatus = BD_NOFEP;
+ return(-ENXIO);
+ }
+ }
+
+ /*
+ * Allocate channel memory that might not have been allocated
+ * when the driver was first loaded.
+ */
+ for (i = 0; i < brd->nasync; i++) {
+ if (!brd->channels[i]) {
+ brd->channels[i] = kzalloc(sizeof(struct channel_t), GFP_ATOMIC);
+ if (!brd->channels[i]) {
+ DPR_CORE(("%s:%d Unable to allocate memory for channel struct\n",
+ __FILE__, __LINE__));
+ }
+ }
+ }
+
+ ch = brd->channels[0];
+ vaddr = brd->re_map_membase;
+
+ bs = (struct bs_t *) ((ulong) vaddr + CHANBUF);
+ cm = (struct cm_t *) ((ulong) vaddr + CMDBUF);
+
+ brd->bd_bs = bs;
+
+ /* Set up channel variables */
+ for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) {
+
+ if (!brd->channels[i])
+ continue;
+
+ DGAP_SPINLOCK_INIT(ch->ch_lock);
+
+ /* Store all our magic numbers */
+ ch->magic = DGAP_CHANNEL_MAGIC;
+ ch->ch_tun.magic = DGAP_UNIT_MAGIC;
+ ch->ch_tun.un_type = DGAP_SERIAL;
+ ch->ch_tun.un_ch = ch;
+ ch->ch_tun.un_dev = i;
+
+ ch->ch_pun.magic = DGAP_UNIT_MAGIC;
+ ch->ch_pun.un_type = DGAP_PRINT;
+ ch->ch_pun.un_ch = ch;
+ ch->ch_pun.un_dev = i;
+
+ ch->ch_vaddr = vaddr;
+ ch->ch_bs = bs;
+ ch->ch_cm = cm;
+ ch->ch_bd = brd;
+ ch->ch_portnum = i;
+ ch->ch_digi = dgap_digi_init;
+
+ /*
+ * Set up digi dsr and dcd bits based on altpin flag.
+ */
+ if (dgap_config_get_altpin(brd)) {
+ ch->ch_dsr = DM_CD;
+ ch->ch_cd = DM_DSR;
+ ch->ch_digi.digi_flags |= DIGI_ALTPIN;
+ }
+ else {
+ ch->ch_cd = DM_CD;
+ ch->ch_dsr = DM_DSR;
+ }
+
+ ch->ch_taddr = vaddr + ((ch->ch_bs->tx_seg) << 4);
+ ch->ch_raddr = vaddr + ((ch->ch_bs->rx_seg) << 4);
+ ch->ch_tx_win = 0;
+ ch->ch_rx_win = 0;
+ ch->ch_tsize = readw(&(ch->ch_bs->tx_max)) + 1;
+ ch->ch_rsize = readw(&(ch->ch_bs->rx_max)) + 1;
+ ch->ch_tstart = 0;
+ ch->ch_rstart = 0;
+
+ /* .25 second delay */
+ ch->ch_close_delay = 250;
+
+ /*
+ * Set queue water marks, interrupt mask,
+ * and general tty parameters.
+ */
+ ch->ch_tlw = tlw = ch->ch_tsize >= 2000 ? ((ch->ch_tsize * 5) / 8) : ch->ch_tsize / 2;
+
+ dgap_cmdw(ch, STLOW, tlw, 0);
+
+ dgap_cmdw(ch, SRLOW, ch->ch_rsize / 2, 0);
+
+ dgap_cmdw(ch, SRHIGH, 7 * ch->ch_rsize / 8, 0);
+
+ ch->ch_mistat = readb(&(ch->ch_bs->m_stat));
+
+ init_waitqueue_head(&ch->ch_flags_wait);
+ init_waitqueue_head(&ch->ch_tun.un_flags_wait);
+ init_waitqueue_head(&ch->ch_pun.un_flags_wait);
+ init_waitqueue_head(&ch->ch_sniff_wait);
+
+ /* Turn on all modem interrupts for now */
+ modem = (DM_CD | DM_DSR | DM_CTS | DM_RI);
+ writeb(modem, &(ch->ch_bs->m_int));
+
+ /*
+ * Set edelay to 0 if interrupts are turned on,
+ * otherwise set edelay to the usual 100.
+ */
+ if (brd->intr_used)
+ writew(0, &(ch->ch_bs->edelay));
+ else
+ writew(100, &(ch->ch_bs->edelay));
+
+ writeb(1, &(ch->ch_bs->idata));
+ }
+
+
+ DPR_INIT(("dgap_tty_init finish\n"));
+
+ return (0);
+}
+
+
+/*
+ * dgap_tty_post_uninit()
+ *
+ * UnInitialize any global tty related data.
+ */
+static void dgap_tty_post_uninit(void)
+{
+ kfree(dgap_TmpWriteBuf);
+ dgap_TmpWriteBuf = NULL;
+}
+
+
+/*
+ * dgap_tty_uninit()
+ *
+ * Uninitialize the TTY portion of this driver. Free all memory and
+ * resources.
+ */
+static void dgap_tty_uninit(struct board_t *brd)
+{
+ int i = 0;
+
+ if (brd->dgap_Major_Serial_Registered) {
+ dgap_BoardsByMajor[brd->SerialDriver->major] = NULL;
+ brd->dgap_Serial_Major = 0;
+ for (i = 0; i < brd->nasync; i++) {
+ dgap_remove_tty_sysfs(brd->channels[i]->ch_tun.un_sysfs);
+ tty_unregister_device(brd->SerialDriver, i);
+ }
+ tty_unregister_driver(brd->SerialDriver);
+ kfree(brd->SerialDriver->ttys);
+ brd->SerialDriver->ttys = NULL;
+ put_tty_driver(brd->SerialDriver);
+ brd->dgap_Major_Serial_Registered = FALSE;
+ }
+
+ if (brd->dgap_Major_TransparentPrint_Registered) {
+ dgap_BoardsByMajor[brd->PrintDriver->major] = NULL;
+ brd->dgap_TransparentPrint_Major = 0;
+ for (i = 0; i < brd->nasync; i++) {
+ dgap_remove_tty_sysfs(brd->channels[i]->ch_pun.un_sysfs);
+ tty_unregister_device(brd->PrintDriver, i);
+ }
+ tty_unregister_driver(brd->PrintDriver);
+ kfree(brd->PrintDriver->ttys);
+ brd->PrintDriver->ttys = NULL;
+ put_tty_driver(brd->PrintDriver);
+ brd->dgap_Major_TransparentPrint_Registered = FALSE;
+ }
+}
+
+
+#define TMPBUFLEN (1024)
+
+/*
+ * dgap_sniff - Dump data out to the "sniff" buffer if the
+ * proc sniff file is opened...
+ */
+static void dgap_sniff_nowait_nolock(struct channel_t *ch, uchar *text, uchar *buf, int len)
+{
+ struct timeval tv;
+ int n;
+ int r;
+ int nbuf;
+ int i;
+ int tmpbuflen;
+ char tmpbuf[TMPBUFLEN];
+ char *p = tmpbuf;
+ int too_much_data;
+
+ /* Leave if sniff not open */
+ if (!(ch->ch_sniff_flags & SNIFF_OPEN))
+ return;
+
+ do_gettimeofday(&tv);
+
+ /* Create our header for data dump */
+ p += sprintf(p, "<%ld %ld><%s><", tv.tv_sec, tv.tv_usec, text);
+ tmpbuflen = p - tmpbuf;
+
+ do {
+ too_much_data = 0;
+
+ for (i = 0; i < len && tmpbuflen < (TMPBUFLEN - 4); i++) {
+ p += sprintf(p, "%02x ", *buf);
+ buf++;
+ tmpbuflen = p - tmpbuf;
+ }
+
+ if (tmpbuflen < (TMPBUFLEN - 4)) {
+ if (i > 0)
+ p += sprintf(p - 1, "%s\n", ">");
+ else
+ p += sprintf(p, "%s\n", ">");
+ } else {
+ too_much_data = 1;
+ len -= i;
+ }
+
+ nbuf = strlen(tmpbuf);
+ p = tmpbuf;
+
+ /*
+ * Loop while data remains.
+ */
+ while (nbuf > 0 && ch->ch_sniff_buf) {
+ /*
+ * Determine the amount of available space left in the
+ * buffer. If there's none, wait until some appears.
+ */
+ n = (ch->ch_sniff_out - ch->ch_sniff_in - 1) & SNIFF_MASK;
+
+ /*
+ * If there is no space left to write to in our sniff buffer,
+ * we have no choice but to drop the data.
+ * We *cannot* sleep here waiting for space, because this
+ * function was probably called by the interrupt/timer routines!
+ */
+ if (n == 0) {
+ return;
+ }
+
+ /*
+ * Copy as much data as will fit.
+ */
+
+ if (n > nbuf)
+ n = nbuf;
+
+ r = SNIFF_MAX - ch->ch_sniff_in;
+
+ if (r <= n) {
+ memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, r);
+
+ n -= r;
+ ch->ch_sniff_in = 0;
+ p += r;
+ nbuf -= r;
+ }
+
+ memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, n);
+
+ ch->ch_sniff_in += n;
+ p += n;
+ nbuf -= n;
+
+ /*
+ * Wakeup any thread waiting for data
+ */
+ if (ch->ch_sniff_flags & SNIFF_WAIT_DATA) {
+ ch->ch_sniff_flags &= ~SNIFF_WAIT_DATA;
+ wake_up_interruptible(&ch->ch_sniff_wait);
+ }
+ }
+
+ /*
+ * If the user sent us too much data to push into our tmpbuf,
+ * we need to keep looping around on all the data.
+ */
+ if (too_much_data) {
+ p = tmpbuf;
+ tmpbuflen = 0;
+ }
+
+ } while (too_much_data);
+}
+
+
+/*=======================================================================
+ *
+ * dgap_input - Process received data.
+ *
+ * ch - Pointer to channel structure.
+ *
+ *=======================================================================*/
+
+static void dgap_input(struct channel_t *ch)
+{
+ struct board_t *bd;
+ struct bs_t *bs;
+ struct tty_struct *tp;
+ struct tty_ldisc *ld;
+ uint rmask;
+ uint head;
+ uint tail;
+ int data_len;
+ ulong lock_flags;
+ ulong lock_flags2;
+ int flip_len;
+ int len = 0;
+ int n = 0;
+ uchar *buf;
+ uchar tmpchar;
+ int s = 0;
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ tp = ch->ch_tun.un_tty;
+
+ bs = ch->ch_bs;
+ if (!bs) {
+ return;
+ }
+
+ bd = ch->ch_bd;
+ if(!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_READ(("dgap_input start\n"));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ /*
+ * Figure the number of characters in the buffer.
+ * Exit immediately if none.
+ */
+
+ rmask = ch->ch_rsize - 1;
+
+ head = readw(&(bs->rx_head));
+ head &= rmask;
+ tail = readw(&(bs->rx_tail));
+ tail &= rmask;
+
+ data_len = (head - tail) & rmask;
+
+ if (data_len == 0) {
+ writeb(1, &(bs->idata));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ DPR_READ(("No data on port %d\n", ch->ch_portnum));
+ return;
+ }
+
+ /*
+ * If the device is not open, or CREAD is off, flush
+ * input data and return immediately.
+ */
+ if ((bd->state != BOARD_READY) || !tp || (tp->magic != TTY_MAGIC) ||
+ !(ch->ch_tun.un_flags & UN_ISOPEN) || !(tp->termios.c_cflag & CREAD) ||
+ (ch->ch_tun.un_flags & UN_CLOSING)) {
+
+ DPR_READ(("input. dropping %d bytes on port %d...\n", data_len, ch->ch_portnum));
+ DPR_READ(("input. tp: %p tp->magic: %x MAGIC:%x ch flags: %x\n",
+ tp, tp ? tp->magic : 0, TTY_MAGIC, ch->ch_tun.un_flags));
+ writew(head, &(bs->rx_tail));
+ writeb(1, &(bs->idata));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return;
+ }
+
+ /*
+ * If we are throttled, simply don't read any data.
+ */
+ if (ch->ch_flags & CH_RXBLOCK) {
+ writeb(1, &(bs->idata));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ DPR_READ(("Port %d throttled, not reading any data. head: %x tail: %x\n",
+ ch->ch_portnum, head, tail));
+ return;
+ }
+
+ /*
+ * Ignore oruns.
+ */
+ tmpchar = readb(&(bs->orun));
+ if (tmpchar) {
+ ch->ch_err_overrun++;
+ writeb(0, &(bs->orun));
+ }
+
+ DPR_READ(("dgap_input start 2\n"));
+
+ /* Decide how much data we can send into the tty layer */
+ flip_len = TTY_FLIPBUF_SIZE;
+
+ /* Chop down the length, if needed */
+ len = min(data_len, flip_len);
+ len = min(len, (N_TTY_BUF_SIZE - 1));
+
+ ld = tty_ldisc_ref(tp);
+
+#ifdef TTY_DONT_FLIP
+ /*
+ * If the DONT_FLIP flag is on, don't flush our buffer, and act
+ * like the ld doesn't have any space to put the data right now.
+ */
+ if (test_bit(TTY_DONT_FLIP, &tp->flags))
+ len = 0;
+#endif
+
+ /*
+ * If we were unable to get a reference to the ld,
+ * don't flush our buffer, and act like the ld doesn't
+ * have any space to put the data right now.
+ */
+ if (!ld) {
+ len = 0;
+ } else {
+ /*
+ * If ld doesn't have a pointer to a receive_buf function,
+ * flush the data, then act like the ld doesn't have any
+ * space to put the data right now.
+ */
+ if (!ld->ops->receive_buf) {
+ writew(head, &(bs->rx_tail));
+ len = 0;
+ }
+ }
+
+ if (len <= 0) {
+ writeb(1, &(bs->idata));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ DPR_READ(("dgap_input 1 - finish\n"));
+ if (ld)
+ tty_ldisc_deref(ld);
+ return;
+ }
+
+ buf = ch->ch_bd->flipbuf;
+ n = len;
+
+ /*
+ * n now contains the most amount of data we can copy,
+ * bounded either by our buffer size or the amount
+ * of data the card actually has pending...
+ */
+ while (n) {
+
+ s = ((head >= tail) ? head : ch->ch_rsize) - tail;
+ s = min(s, n);
+
+ if (s <= 0)
+ break;
+
+ memcpy_fromio(buf, (char *) ch->ch_raddr + tail, s);
+ dgap_sniff_nowait_nolock(ch, "USER READ", buf, s);
+
+ tail += s;
+ buf += s;
+
+ n -= s;
+ /* Flip queue if needed */
+ tail &= rmask;
+ }
+
+ writew(tail, &(bs->rx_tail));
+ writeb(1, &(bs->idata));
+ ch->ch_rxcount += len;
+
+ /*
+ * If we are completely raw, we don't need to go through a lot
+ * of the tty layers that exist.
+ * In this case, we take the shortest and fastest route we
+ * can to relay the data to the user.
+ *
+ * On the other hand, if we are not raw, we need to go through
+ * the tty layer, which has its API more well defined.
+ */
+ if (I_PARMRK(tp) || I_BRKINT(tp) || I_INPCK(tp)) {
+ dgap_parity_scan(ch, ch->ch_bd->flipbuf, ch->ch_bd->flipflagbuf, &len);
+
+ len = tty_buffer_request_room(tp->port, len);
+ tty_insert_flip_string_flags(tp->port, ch->ch_bd->flipbuf,
+ ch->ch_bd->flipflagbuf, len);
+ }
+ else {
+ len = tty_buffer_request_room(tp->port, len);
+ tty_insert_flip_string(tp->port, ch->ch_bd->flipbuf, len);
+ }
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ /* Tell the tty layer its okay to "eat" the data now */
+ tty_flip_buffer_push(tp->port);
+
+ if (ld)
+ tty_ldisc_deref(ld);
+
+ DPR_READ(("dgap_input - finish\n"));
+}
+
+
+/************************************************************************
+ * Determines when CARRIER changes state and takes appropriate
+ * action.
+ ************************************************************************/
+static void dgap_carrier(struct channel_t *ch)
+{
+ struct board_t *bd;
+
+ int virt_carrier = 0;
+ int phys_carrier = 0;
+
+ DPR_CARR(("dgap_carrier called...\n"));
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ /* Make sure altpin is always set correctly */
+ if (ch->ch_digi.digi_flags & DIGI_ALTPIN) {
+ ch->ch_dsr = DM_CD;
+ ch->ch_cd = DM_DSR;
+ }
+ else {
+ ch->ch_dsr = DM_DSR;
+ ch->ch_cd = DM_CD;
+ }
+
+ if (ch->ch_mistat & D_CD(ch)) {
+ DPR_CARR(("mistat: %x D_CD: %x\n", ch->ch_mistat, D_CD(ch)));
+ phys_carrier = 1;
+ }
+
+ if (ch->ch_digi.digi_flags & DIGI_FORCEDCD) {
+ virt_carrier = 1;
+ }
+
+ if (ch->ch_c_cflag & CLOCAL) {
+ virt_carrier = 1;
+ }
+
+
+ DPR_CARR(("DCD: physical: %d virt: %d\n", phys_carrier, virt_carrier));
+
+ /*
+ * Test for a VIRTUAL carrier transition to HIGH.
+ */
+ if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) {
+
+ /*
+ * When carrier rises, wake any threads waiting
+ * for carrier in the open routine.
+ */
+
+ DPR_CARR(("carrier: virt DCD rose\n"));
+
+ if (waitqueue_active(&(ch->ch_flags_wait)))
+ wake_up_interruptible(&ch->ch_flags_wait);
+ }
+
+ /*
+ * Test for a PHYSICAL carrier transition to HIGH.
+ */
+ if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) {
+
+ /*
+ * When carrier rises, wake any threads waiting
+ * for carrier in the open routine.
+ */
+
+ DPR_CARR(("carrier: physical DCD rose\n"));
+
+ if (waitqueue_active(&(ch->ch_flags_wait)))
+ wake_up_interruptible(&ch->ch_flags_wait);
+ }
+
+ /*
+ * Test for a PHYSICAL transition to low, so long as we aren't
+ * currently ignoring physical transitions (which is what "virtual
+ * carrier" indicates).
+ *
+ * The transition of the virtual carrier to low really doesn't
+ * matter... it really only means "ignore carrier state", not
+ * "make pretend that carrier is there".
+ */
+ if ((virt_carrier == 0) && ((ch->ch_flags & CH_CD) != 0) &&
+ (phys_carrier == 0))
+ {
+
+ /*
+ * When carrier drops:
+ *
+ * Drop carrier on all open units.
+ *
+ * Flush queues, waking up any task waiting in the
+ * line discipline.
+ *
+ * Send a hangup to the control terminal.
+ *
+ * Enable all select calls.
+ */
+ if (waitqueue_active(&(ch->ch_flags_wait)))
+ wake_up_interruptible(&ch->ch_flags_wait);
+
+ if (ch->ch_tun.un_open_count > 0) {
+ DPR_CARR(("Sending tty hangup\n"));
+ tty_hangup(ch->ch_tun.un_tty);
+ }
+
+ if (ch->ch_pun.un_open_count > 0) {
+ DPR_CARR(("Sending pr hangup\n"));
+ tty_hangup(ch->ch_pun.un_tty);
+ }
+ }
+
+ /*
+ * Make sure that our cached values reflect the current reality.
+ */
+ if (virt_carrier == 1)
+ ch->ch_flags |= CH_FCAR;
+ else
+ ch->ch_flags &= ~CH_FCAR;
+
+ if (phys_carrier == 1)
+ ch->ch_flags |= CH_CD;
+ else
+ ch->ch_flags &= ~CH_CD;
+}
+
+
+/************************************************************************
+ *
+ * TTY Entry points and helper functions
+ *
+ ************************************************************************/
+
+/*
+ * dgap_tty_open()
+ *
+ */
+static int dgap_tty_open(struct tty_struct *tty, struct file *file)
+{
+ struct board_t *brd;
+ struct channel_t *ch;
+ struct un_t *un;
+ struct bs_t *bs;
+ uint major = 0;
+ uint minor = 0;
+ int rc = 0;
+ ulong lock_flags;
+ ulong lock_flags2;
+ u16 head;
+
+ rc = 0;
+
+ major = MAJOR(tty_devnum(tty));
+ minor = MINOR(tty_devnum(tty));
+
+ if (major > 255) {
+ return -ENXIO;
+ }
+
+ /* Get board pointer from our array of majors we have allocated */
+ brd = dgap_BoardsByMajor[major];
+ if (!brd) {
+ return -ENXIO;
+ }
+
+ /*
+ * If board is not yet up to a state of READY, go to
+ * sleep waiting for it to happen or they cancel the open.
+ */
+ rc = wait_event_interruptible(brd->state_wait,
+ (brd->state & BOARD_READY));
+
+ if (rc) {
+ return rc;
+ }
+
+ DGAP_LOCK(brd->bd_lock, lock_flags);
+
+ /* The wait above should guarantee this cannot happen */
+ if (brd->state != BOARD_READY) {
+ DGAP_UNLOCK(brd->bd_lock, lock_flags);
+ return -ENXIO;
+ }
+
+ /* If opened device is greater than our number of ports, bail. */
+ if (MINOR(tty_devnum(tty)) > brd->nasync) {
+ DGAP_UNLOCK(brd->bd_lock, lock_flags);
+ return -ENXIO;
+ }
+
+ ch = brd->channels[minor];
+ if (!ch) {
+ DGAP_UNLOCK(brd->bd_lock, lock_flags);
+ return -ENXIO;
+ }
+
+ /* Grab channel lock */
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ /* Figure out our type */
+ if (major == brd->dgap_Serial_Major) {
+ un = &brd->channels[minor]->ch_tun;
+ un->un_type = DGAP_SERIAL;
+ }
+ else if (major == brd->dgap_TransparentPrint_Major) {
+ un = &brd->channels[minor]->ch_pun;
+ un->un_type = DGAP_PRINT;
+ }
+ else {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(brd->bd_lock, lock_flags);
+ DPR_OPEN(("%d Unknown TYPE!\n", __LINE__));
+ return -ENXIO;
+ }
+
+ /* Store our unit into driver_data, so we always have it available. */
+ tty->driver_data = un;
+
+ DPR_OPEN(("Open called. MAJOR: %d MINOR:%d unit: %p NAME: %s\n",
+ MAJOR(tty_devnum(tty)), MINOR(tty_devnum(tty)), un, brd->name));
+
+ /*
+ * Error if channel info pointer is NULL.
+ */
+ bs = ch->ch_bs;
+ if (!bs) {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(brd->bd_lock, lock_flags);
+ DPR_OPEN(("%d BS is 0!\n", __LINE__));
+ return -ENXIO;
+ }
+
+ DPR_OPEN(("%d: tflag=%x pflag=%x\n", __LINE__, ch->ch_tun.un_flags, ch->ch_pun.un_flags));
+
+ /*
+ * Initialize tty's
+ */
+ if (!(un->un_flags & UN_ISOPEN)) {
+ /* Store important variables. */
+ un->un_tty = tty;
+
+ /* Maybe do something here to the TTY struct as well? */
+ }
+
+ /*
+ * Initialize if neither terminal or printer is open.
+ */
+ if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
+
+ DPR_OPEN(("dgap_open: initializing channel in open...\n"));
+
+ ch->ch_mforce = 0;
+ ch->ch_mval = 0;
+
+ /*
+ * Flush input queue.
+ */
+ head = readw(&(bs->rx_head));
+ writew(head, &(bs->rx_tail));
+
+ ch->ch_flags = 0;
+ ch->pscan_state = 0;
+ ch->pscan_savechar = 0;
+
+ ch->ch_c_cflag = tty->termios.c_cflag;
+ ch->ch_c_iflag = tty->termios.c_iflag;
+ ch->ch_c_oflag = tty->termios.c_oflag;
+ ch->ch_c_lflag = tty->termios.c_lflag;
+ ch->ch_startc = tty->termios.c_cc[VSTART];
+ ch->ch_stopc = tty->termios.c_cc[VSTOP];
+
+ /* TODO: flush our TTY struct here? */
+ }
+
+ dgap_carrier(ch);
+ /*
+ * Run param in case we changed anything
+ */
+ dgap_param(tty);
+
+ /*
+ * follow protocol for opening port
+ */
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(brd->bd_lock, lock_flags);
+
+ rc = dgap_block_til_ready(tty, file, ch);
+
+ if (!un->un_tty) {
+ return -ENODEV;
+ }
+
+ if (rc) {
+ DPR_OPEN(("dgap_tty_open returning after dgap_block_til_ready "
+ "with %d\n", rc));
+ }
+
+ /* No going back now, increment our unit and channel counters */
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ ch->ch_open_count++;
+ un->un_open_count++;
+ un->un_flags |= (UN_ISOPEN);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ DPR_OPEN(("dgap_tty_open finished\n"));
+ return (rc);
+}
+
+
+/*
+ * dgap_block_til_ready()
+ *
+ * Wait for DCD, if needed.
+ */
+static int dgap_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch)
+{
+ int retval = 0;
+ struct un_t *un = NULL;
+ ulong lock_flags;
+ uint old_flags = 0;
+ int sleep_on_un_flags = 0;
+
+ if (!tty || tty->magic != TTY_MAGIC || !file || !ch || ch->magic != DGAP_CHANNEL_MAGIC) {
+ return (-ENXIO);
+ }
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC) {
+ return (-ENXIO);
+ }
+
+ DPR_OPEN(("dgap_block_til_ready - before block.\n"));
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ ch->ch_wopen++;
+
+ /* Loop forever */
+ while (1) {
+
+ sleep_on_un_flags = 0;
+
+ /*
+ * If board has failed somehow during our sleep, bail with error.
+ */
+ if (ch->ch_bd->state == BOARD_FAILED) {
+ retval = -ENXIO;
+ break;
+ }
+
+ /* If tty was hung up, break out of loop and set error. */
+ if (tty_hung_up_p(file)) {
+ retval = -EAGAIN;
+ break;
+ }
+
+ /*
+ * If either unit is in the middle of the fragile part of close,
+ * we just cannot touch the channel safely.
+ * Go back to sleep, knowing that when the channel can be
+ * touched safely, the close routine will signal the
+ * ch_wait_flags to wake us back up.
+ */
+ if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_CLOSING)) {
+
+ /*
+ * Our conditions to leave cleanly and happily:
+ * 1) NONBLOCKING on the tty is set.
+ * 2) CLOCAL is set.
+ * 3) DCD (fake or real) is active.
+ */
+
+ if (file->f_flags & O_NONBLOCK) {
+ break;
+ }
+
+ if (tty->flags & (1 << TTY_IO_ERROR)) {
+ break;
+ }
+
+ if (ch->ch_flags & CH_CD) {
+ DPR_OPEN(("%d: ch_flags: %x\n", __LINE__, ch->ch_flags));
+ break;
+ }
+
+ if (ch->ch_flags & CH_FCAR) {
+ DPR_OPEN(("%d: ch_flags: %x\n", __LINE__, ch->ch_flags));
+ break;
+ }
+ }
+ else {
+ sleep_on_un_flags = 1;
+ }
+
+ /*
+ * If there is a signal pending, the user probably
+ * interrupted (ctrl-c) us.
+ * Leave loop with error set.
+ */
+ if (signal_pending(current)) {
+ DPR_OPEN(("%d: signal pending...\n", __LINE__));
+ retval = -ERESTARTSYS;
+ break;
+ }
+
+ DPR_OPEN(("dgap_block_til_ready - blocking.\n"));
+
+ /*
+ * Store the flags before we let go of channel lock
+ */
+ if (sleep_on_un_flags)
+ old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags;
+ else
+ old_flags = ch->ch_flags;
+
+ /*
+ * Let go of channel lock before calling schedule.
+ * Our poller will get any FEP events and wake us up when DCD
+ * eventually goes active.
+ */
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ DPR_OPEN(("Going to sleep on %s flags...\n",
+ (sleep_on_un_flags ? "un" : "ch")));
+
+ /*
+ * Wait for something in the flags to change from the current value.
+ */
+ if (sleep_on_un_flags) {
+ retval = wait_event_interruptible(un->un_flags_wait,
+ (old_flags != (ch->ch_tun.un_flags | ch->ch_pun.un_flags)));
+ }
+ else {
+ retval = wait_event_interruptible(ch->ch_flags_wait,
+ (old_flags != ch->ch_flags));
+ }
+
+ DPR_OPEN(("After sleep... retval: %x\n", retval));
+
+ /*
+ * We got woken up for some reason.
+ * Before looping around, grab our channel lock.
+ */
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ }
+
+ ch->ch_wopen--;
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ DPR_OPEN(("dgap_block_til_ready - after blocking.\n"));
+
+ if (retval) {
+ DPR_OPEN(("dgap_block_til_ready - done. error. retval: %x\n", retval));
+ return(retval);
+ }
+
+ DPR_OPEN(("dgap_block_til_ready - done no error. jiffies: %lu\n", jiffies));
+
+ return(0);
+}
+
+
+/*
+ * dgap_tty_hangup()
+ *
+ * Hangup the port. Like a close, but don't wait for output to drain.
+ */
+static void dgap_tty_hangup(struct tty_struct *tty)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_CLOSE(("dgap_hangup called. ch->ch_open_count: %d un->un_open_count: %d\n",
+ ch->ch_open_count, un->un_open_count));
+
+ /* flush the transmit queues */
+ dgap_tty_flush_buffer(tty);
+
+ DPR_CLOSE(("dgap_hangup finished. ch->ch_open_count: %d un->un_open_count: %d\n",
+ ch->ch_open_count, un->un_open_count));
+}
+
+
+
+/*
+ * dgap_tty_close()
+ *
+ */
+static void dgap_tty_close(struct tty_struct *tty, struct file *file)
+{
+ struct ktermios *ts;
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ int rc = 0;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ ts = &tty->termios;
+
+ DPR_CLOSE(("Close called\n"));
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ /*
+ * Determine if this is the last close or not - and if we agree about
+ * which type of close it is with the Line Discipline
+ */
+ if ((tty->count == 1) && (un->un_open_count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. un_open_count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ APR(("tty->count is 1, un open count is %d\n", un->un_open_count));
+ un->un_open_count = 1;
+ }
+
+ if (--un->un_open_count < 0) {
+ APR(("bad serial port open count of %d\n", un->un_open_count));
+ un->un_open_count = 0;
+ }
+
+ ch->ch_open_count--;
+
+ if (ch->ch_open_count && un->un_open_count) {
+ DPR_CLOSE(("dgap_tty_close: not last close ch: %d un:%d\n",
+ ch->ch_open_count, un->un_open_count));
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+ return;
+ }
+
+ /* OK, its the last close on the unit */
+ DPR_CLOSE(("dgap_tty_close - last close on unit procedures\n"));
+
+ un->un_flags |= UN_CLOSING;
+
+ tty->closing = 1;
+
+ /*
+ * Only officially close channel if count is 0 and
+ * DIGI_PRINTER bit is not set.
+ */
+ if ((ch->ch_open_count == 0) && !(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
+
+ ch->ch_flags &= ~(CH_RXBLOCK);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ /* wait for output to drain */
+ /* This will also return if we take an interrupt */
+
+ DPR_CLOSE(("Calling wait_for_drain\n"));
+ rc = dgap_wait_for_drain(tty);
+ DPR_CLOSE(("After calling wait_for_drain\n"));
+
+ if (rc) {
+ DPR_BASIC(("dgap_tty_close - bad return: %d ", rc));
+ }
+
+ dgap_tty_flush_buffer(tty);
+ tty_ldisc_flush(tty);
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ tty->closing = 0;
+
+ /*
+ * If we have HUPCL set, lower DTR and RTS
+ */
+ if (ch->ch_c_cflag & HUPCL ) {
+ DPR_CLOSE(("Close. HUPCL set, dropping DTR/RTS\n"));
+ ch->ch_mostat &= ~(D_RTS(ch)|D_DTR(ch));
+ dgap_cmdb( ch, SMODEM, 0, D_DTR(ch)|D_RTS(ch), 0 );
+
+ /*
+ * Go to sleep to ensure RTS/DTR
+ * have been dropped for modems to see it.
+ */
+ if (ch->ch_close_delay) {
+ DPR_CLOSE(("Close. Sleeping for RTS/DTR drop\n"));
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+ dgap_ms_sleep(ch->ch_close_delay);
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ DPR_CLOSE(("Close. After sleeping for RTS/DTR drop\n"));
+ }
+ }
+
+ ch->pscan_state = 0;
+ ch->pscan_savechar = 0;
+ ch->ch_baud_info = 0;
+
+ }
+
+ /*
+ * turn off print device when closing print device.
+ */
+ if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON) ) {
+ dgap_wmove(ch, ch->ch_digi.digi_offstr,
+ (int) ch->ch_digi.digi_offlen);
+ ch->ch_flags &= ~CH_PRON;
+ }
+
+ un->un_tty = NULL;
+ un->un_flags &= ~(UN_ISOPEN | UN_CLOSING);
+ tty->driver_data = NULL;
+
+ DPR_CLOSE(("Close. Doing wakeups\n"));
+ wake_up_interruptible(&ch->ch_flags_wait);
+ wake_up_interruptible(&un->un_flags_wait);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ DPR_BASIC(("dgap_tty_close - complete\n"));
+}
+
+
+/*
+ * dgap_tty_chars_in_buffer()
+ *
+ * Return number of characters that have not been transmitted yet.
+ *
+ * This routine is used by the line discipline to determine if there
+ * is data waiting to be transmitted/drained/flushed or not.
+ */
+static int dgap_tty_chars_in_buffer(struct tty_struct *tty)
+{
+ struct board_t *bd = NULL;
+ struct channel_t *ch = NULL;
+ struct un_t *un = NULL;
+ struct bs_t *bs = NULL;
+ uchar tbusy;
+ uint chars = 0;
+ u16 thead, ttail, tmask, chead, ctail;
+ ulong lock_flags = 0;
+ ulong lock_flags2 = 0;
+
+ if (tty == NULL)
+ return(0);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+
+ bs = ch->ch_bs;
+ if (!bs)
+ return (0);
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ tmask = (ch->ch_tsize - 1);
+
+ /* Get Transmit queue pointers */
+ thead = readw(&(bs->tx_head)) & tmask;
+ ttail = readw(&(bs->tx_tail)) & tmask;
+
+ /* Get tbusy flag */
+ tbusy = readb(&(bs->tbusy));
+
+ /* Get Command queue pointers */
+ chead = readw(&(ch->ch_cm->cm_head));
+ ctail = readw(&(ch->ch_cm->cm_tail));
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ /*
+ * The only way we know for sure if there is no pending
+ * data left to be transferred, is if:
+ * 1) Transmit head and tail are equal (empty).
+ * 2) Command queue head and tail are equal (empty).
+ * 3) The "TBUSY" flag is 0. (Transmitter not busy).
+ */
+
+ if ((ttail == thead) && (tbusy == 0) && (chead == ctail)) {
+ chars = 0;
+ }
+ else {
+ if (thead >= ttail)
+ chars = thead - ttail;
+ else
+ chars = thead - ttail + ch->ch_tsize;
+ /*
+ * Fudge factor here.
+ * If chars is zero, we know that the command queue had
+ * something in it or tbusy was set. Because we cannot
+ * be sure if there is still some data to be transmitted,
+ * lets lie, and tell ld we have 1 byte left.
+ */
+ if (chars == 0) {
+ /*
+ * If TBUSY is still set, and our tx buffers are empty,
+ * force the firmware to send me another wakeup after
+ * TBUSY has been cleared.
+ */
+ if (tbusy != 0) {
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ un->un_flags |= UN_EMPTY;
+ writeb(1, &(bs->iempty));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+ }
+ chars = 1;
+ }
+ }
+
+ DPR_WRITE(("dgap_tty_chars_in_buffer. Port: %x - %d (head: %d tail: %d tsize: %d)\n",
+ ch->ch_portnum, chars, thead, ttail, ch->ch_tsize));
+ return(chars);
+}
+
+
+static int dgap_wait_for_drain(struct tty_struct *tty)
+{
+ struct channel_t *ch;
+ struct un_t *un;
+ struct bs_t *bs;
+ int ret = -EIO;
+ uint count = 1;
+ ulong lock_flags = 0;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return ret;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return ret;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return ret;
+
+ bs = ch->ch_bs;
+ if (!bs)
+ return ret;
+
+ ret = 0;
+
+ DPR_DRAIN(("dgap_wait_for_drain start\n"));
+
+ /* Loop until data is drained */
+ while (count != 0) {
+
+ count = dgap_tty_chars_in_buffer(tty);
+
+ if (count == 0)
+ break;
+
+ /* Set flag waiting for drain */
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ un->un_flags |= UN_EMPTY;
+ writeb(1, &(bs->iempty));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ /* Go to sleep till we get woken up */
+ ret = wait_event_interruptible(un->un_flags_wait, ((un->un_flags & UN_EMPTY) == 0));
+ /* If ret is non-zero, user ctrl-c'ed us */
+ if (ret) {
+ break;
+ }
+ }
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ un->un_flags &= ~(UN_EMPTY);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ DPR_DRAIN(("dgap_wait_for_drain finish\n"));
+ return (ret);
+}
+
+
+/*
+ * dgap_maxcps_room
+ *
+ * Reduces bytes_available to the max number of characters
+ * that can be sent currently given the maxcps value, and
+ * returns the new bytes_available. This only affects printer
+ * output.
+ */
+static int dgap_maxcps_room(struct tty_struct *tty, int bytes_available)
+{
+ struct channel_t *ch = NULL;
+ struct un_t *un = NULL;
+
+ if (tty == NULL)
+ return (bytes_available);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (bytes_available);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (bytes_available);
+
+ /*
+ * If its not the Transparent print device, return
+ * the full data amount.
+ */
+ if (un->un_type != DGAP_PRINT)
+ return (bytes_available);
+
+ if (ch->ch_digi.digi_maxcps > 0 && ch->ch_digi.digi_bufsize > 0 ) {
+ int cps_limit = 0;
+ unsigned long current_time = jiffies;
+ unsigned long buffer_time = current_time +
+ (HZ * ch->ch_digi.digi_bufsize) / ch->ch_digi.digi_maxcps;
+
+ if (ch->ch_cpstime < current_time) {
+ /* buffer is empty */
+ ch->ch_cpstime = current_time; /* reset ch_cpstime */
+ cps_limit = ch->ch_digi.digi_bufsize;
+ }
+ else if (ch->ch_cpstime < buffer_time) {
+ /* still room in the buffer */
+ cps_limit = ((buffer_time - ch->ch_cpstime) * ch->ch_digi.digi_maxcps) / HZ;
+ }
+ else {
+ /* no room in the buffer */
+ cps_limit = 0;
+ }
+
+ bytes_available = min(cps_limit, bytes_available);
+ }
+
+ return (bytes_available);
+}
+
+
+static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event)
+{
+ struct channel_t *ch = NULL;
+ struct bs_t *bs = NULL;
+
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+ bs = ch->ch_bs;
+ if (!bs)
+ return;
+
+ if ((event & UN_LOW) != 0) {
+ if ((un->un_flags & UN_LOW) == 0) {
+ un->un_flags |= UN_LOW;
+ writeb(1, &(bs->ilow));
+ }
+ }
+ if ((event & UN_LOW) != 0) {
+ if ((un->un_flags & UN_EMPTY) == 0) {
+ un->un_flags |= UN_EMPTY;
+ writeb(1, &(bs->iempty));
+ }
+ }
+}
+
+
+/*
+ * dgap_tty_write_room()
+ *
+ * Return space available in Tx buffer
+ */
+static int dgap_tty_write_room(struct tty_struct *tty)
+{
+ struct channel_t *ch = NULL;
+ struct un_t *un = NULL;
+ struct bs_t *bs = NULL;
+ u16 head, tail, tmask;
+ int ret = 0;
+ ulong lock_flags = 0;
+
+ if (tty == NULL || dgap_TmpWriteBuf == NULL)
+ return(0);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+
+ bs = ch->ch_bs;
+ if (!bs)
+ return (0);
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ tmask = ch->ch_tsize - 1;
+ head = readw(&(bs->tx_head)) & tmask;
+ tail = readw(&(bs->tx_tail)) & tmask;
+
+ if ((ret = tail - head - 1) < 0)
+ ret += ch->ch_tsize;
+
+ /* Limit printer to maxcps */
+ ret = dgap_maxcps_room(tty, ret);
+
+ /*
+ * If we are printer device, leave space for
+ * possibly both the on and off strings.
+ */
+ if (un->un_type == DGAP_PRINT) {
+ if (!(ch->ch_flags & CH_PRON))
+ ret -= ch->ch_digi.digi_onlen;
+ ret -= ch->ch_digi.digi_offlen;
+ }
+ else {
+ if (ch->ch_flags & CH_PRON)
+ ret -= ch->ch_digi.digi_offlen;
+ }
+
+ if (ret < 0)
+ ret = 0;
+
+ /*
+ * Schedule FEP to wake us up if needed.
+ *
+ * TODO: This might be overkill...
+ * Do we really need to schedule callbacks from the FEP
+ * in every case? Can we get smarter based on ret?
+ */
+ dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ DPR_WRITE(("dgap_tty_write_room - %d tail: %d head: %d\n", ret, tail, head));
+
+ return(ret);
+}
+
+
+/*
+ * dgap_tty_put_char()
+ *
+ * Put a character into ch->ch_buf
+ *
+ * - used by the line discipline for OPOST processing
+ */
+static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c)
+{
+ /*
+ * Simply call tty_write.
+ */
+ DPR_WRITE(("dgap_tty_put_char called\n"));
+ dgap_tty_write(tty, &c, 1);
+ return 1;
+}
+
+
+/*
+ * dgap_tty_write()
+ *
+ * Take data from the user or kernel and send it out to the FEP.
+ * In here exists all the Transparent Print magic as well.
+ */
+static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
+{
+ struct channel_t *ch = NULL;
+ struct un_t *un = NULL;
+ struct bs_t *bs = NULL;
+ char *vaddr = NULL;
+ u16 head, tail, tmask, remain;
+ int bufcount = 0, n = 0;
+ int orig_count = 0;
+ ulong lock_flags;
+ int from_user = 0;
+
+ if (tty == NULL || dgap_TmpWriteBuf == NULL)
+ return(0);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return(0);
+
+ bs = ch->ch_bs;
+ if (!bs)
+ return(0);
+
+ if (!count)
+ return(0);
+
+ DPR_WRITE(("dgap_tty_write: Port: %x tty=%p user=%d len=%d\n",
+ ch->ch_portnum, tty, from_user, count));
+
+ /*
+ * Store original amount of characters passed in.
+ * This helps to figure out if we should ask the FEP
+ * to send us an event when it has more space available.
+ */
+ orig_count = count;
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ /* Get our space available for the channel from the board */
+ tmask = ch->ch_tsize - 1;
+ head = readw(&(bs->tx_head)) & tmask;
+ tail = readw(&(bs->tx_tail)) & tmask;
+
+ if ((bufcount = tail - head - 1) < 0)
+ bufcount += ch->ch_tsize;
+
+ DPR_WRITE(("%d: bufcount: %x count: %x tail: %x head: %x tmask: %x\n",
+ __LINE__, bufcount, count, tail, head, tmask));
+
+ /*
+ * Limit printer output to maxcps overall, with bursts allowed
+ * up to bufsize characters.
+ */
+ bufcount = dgap_maxcps_room(tty, bufcount);
+
+ /*
+ * Take minimum of what the user wants to send, and the
+ * space available in the FEP buffer.
+ */
+ count = min(count, bufcount);
+
+ /*
+ * Bail if no space left.
+ */
+ if (count <= 0) {
+ dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+ return(0);
+ }
+
+ /*
+ * Output the printer ON string, if we are in terminal mode, but
+ * need to be in printer mode.
+ */
+ if ((un->un_type == DGAP_PRINT) && !(ch->ch_flags & CH_PRON)) {
+ dgap_wmove(ch, ch->ch_digi.digi_onstr,
+ (int) ch->ch_digi.digi_onlen);
+ head = readw(&(bs->tx_head)) & tmask;
+ ch->ch_flags |= CH_PRON;
+ }
+
+ /*
+ * On the other hand, output the printer OFF string, if we are
+ * currently in printer mode, but need to output to the terminal.
+ */
+ if ((un->un_type != DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
+ dgap_wmove(ch, ch->ch_digi.digi_offstr,
+ (int) ch->ch_digi.digi_offlen);
+ head = readw(&(bs->tx_head)) & tmask;
+ ch->ch_flags &= ~CH_PRON;
+ }
+
+ /*
+ * If there is nothing left to copy, or I can't handle any more data, leave.
+ */
+ if (count <= 0) {
+ dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+ return(0);
+ }
+
+ if (from_user) {
+
+ count = min(count, WRITEBUFLEN);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ /*
+ * If data is coming from user space, copy it into a temporary
+ * buffer so we don't get swapped out while doing the copy to
+ * the board.
+ */
+ /* we're allowed to block if it's from_user */
+ if (down_interruptible(&dgap_TmpWriteSem)) {
+ return (-EINTR);
+ }
+
+ if (copy_from_user(dgap_TmpWriteBuf, (const uchar __user *) buf, count)) {
+ up(&dgap_TmpWriteSem);
+ printk("Write: Copy from user failed!\n");
+ return -EFAULT;
+ }
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ buf = dgap_TmpWriteBuf;
+ }
+
+ n = count;
+
+ /*
+ * If the write wraps over the top of the circular buffer,
+ * move the portion up to the wrap point, and reset the
+ * pointers to the bottom.
+ */
+ remain = ch->ch_tstart + ch->ch_tsize - head;
+
+ if (n >= remain) {
+ n -= remain;
+ vaddr = ch->ch_taddr + head;
+
+ memcpy_toio(vaddr, (uchar *) buf, remain);
+ dgap_sniff_nowait_nolock(ch, "USER WRITE", (uchar *) buf, remain);
+
+ head = ch->ch_tstart;
+ buf += remain;
+ }
+
+ if (n > 0) {
+
+ /*
+ * Move rest of data.
+ */
+ vaddr = ch->ch_taddr + head;
+ remain = n;
+
+ memcpy_toio(vaddr, (uchar *) buf, remain);
+ dgap_sniff_nowait_nolock(ch, "USER WRITE", (uchar *) buf, remain);
+
+ head += remain;
+
+ }
+
+ if (count) {
+ ch->ch_txcount += count;
+ head &= tmask;
+ writew(head, &(bs->tx_head));
+ }
+
+
+ dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+
+ /*
+ * If this is the print device, and the
+ * printer is still on, we need to turn it
+ * off before going idle. If the buffer is
+ * non-empty, wait until it goes empty.
+ * Otherwise turn it off right now.
+ */
+ if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
+ tail = readw(&(bs->tx_tail)) & tmask;
+
+ if (tail != head) {
+ un->un_flags |= UN_EMPTY;
+ writeb(1, &(bs->iempty));
+ }
+ else {
+ dgap_wmove(ch, ch->ch_digi.digi_offstr,
+ (int) ch->ch_digi.digi_offlen);
+ head = readw(&(bs->tx_head)) & tmask;
+ ch->ch_flags &= ~CH_PRON;
+ }
+ }
+
+ /* Update printer buffer empty time. */
+ if ((un->un_type == DGAP_PRINT) && (ch->ch_digi.digi_maxcps > 0)
+ && (ch->ch_digi.digi_bufsize > 0)) {
+ ch->ch_cpstime += (HZ * count) / ch->ch_digi.digi_maxcps;
+ }
+
+ if (from_user) {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+ up(&dgap_TmpWriteSem);
+ }
+ else {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+ }
+
+ DPR_WRITE(("Write finished - Write %d bytes of %d.\n", count, orig_count));
+
+ return (count);
+}
+
+
+
+/*
+ * Return modem signals to ld.
+ */
+static int dgap_tty_tiocmget(struct tty_struct *tty)
+{
+ struct channel_t *ch;
+ struct un_t *un;
+ int result = -EIO;
+ uchar mstat = 0;
+ ulong lock_flags;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return result;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return result;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return result;
+
+ DPR_IOCTL(("dgap_tty_tiocmget start\n"));
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ mstat = readb(&(ch->ch_bs->m_stat));
+ /* Append any outbound signals that might be pending... */
+ mstat |= ch->ch_mostat;
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ result = 0;
+
+ if (mstat & D_DTR(ch))
+ result |= TIOCM_DTR;
+ if (mstat & D_RTS(ch))
+ result |= TIOCM_RTS;
+ if (mstat & D_CTS(ch))
+ result |= TIOCM_CTS;
+ if (mstat & D_DSR(ch))
+ result |= TIOCM_DSR;
+ if (mstat & D_RI(ch))
+ result |= TIOCM_RI;
+ if (mstat & D_CD(ch))
+ result |= TIOCM_CD;
+
+ DPR_IOCTL(("dgap_tty_tiocmget finish\n"));
+
+ return result;
+}
+
+
+/*
+ * dgap_tty_tiocmset()
+ *
+ * Set modem signals, called by ld.
+ */
+
+static int dgap_tty_tiocmset(struct tty_struct *tty,
+ unsigned int set, unsigned int clear)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ int ret = -EIO;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return ret;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return ret;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return ret;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return ret;
+
+ DPR_IOCTL(("dgap_tty_tiocmset start\n"));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ if (set & TIOCM_RTS) {
+ ch->ch_mforce |= D_RTS(ch);
+ ch->ch_mval |= D_RTS(ch);
+ }
+
+ if (set & TIOCM_DTR) {
+ ch->ch_mforce |= D_DTR(ch);
+ ch->ch_mval |= D_DTR(ch);
+ }
+
+ if (clear & TIOCM_RTS) {
+ ch->ch_mforce |= D_RTS(ch);
+ ch->ch_mval &= ~(D_RTS(ch));
+ }
+
+ if (clear & TIOCM_DTR) {
+ ch->ch_mforce |= D_DTR(ch);
+ ch->ch_mval &= ~(D_DTR(ch));
+ }
+
+ dgap_param(tty);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_tiocmset finish\n"));
+
+ return (0);
+}
+
+
+
+/*
+ * dgap_tty_send_break()
+ *
+ * Send a Break, called by ld.
+ */
+static int dgap_tty_send_break(struct tty_struct *tty, int msec)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ int ret = -EIO;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return ret;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return ret;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return ret;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return ret;
+
+ switch (msec) {
+ case -1:
+ msec = 0xFFFF;
+ break;
+ case 0:
+ msec = 1;
+ break;
+ default:
+ msec /= 10;
+ break;
+ }
+
+ DPR_IOCTL(("dgap_tty_send_break start 1. %lx\n", jiffies));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+#if 0
+ dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+#endif
+ dgap_cmdw(ch, SBREAK, (u16) msec, 0);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_send_break finish\n"));
+
+ return (0);
+}
+
+
+
+
+/*
+ * dgap_tty_wait_until_sent()
+ *
+ * wait until data has been transmitted, called by ld.
+ */
+static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+ int rc;
+ rc = dgap_wait_for_drain(tty);
+ if (rc) {
+ DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+ return;
+ }
+ return;
+}
+
+
+
+/*
+ * dgap_send_xchar()
+ *
+ * send a high priority character, called by ld.
+ */
+static void dgap_tty_send_xchar(struct tty_struct *tty, char c)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_IOCTL(("dgap_tty_send_xchar start 1. %lx\n", jiffies));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ /*
+ * This is technically what we should do.
+ * However, the NIST tests specifically want
+ * to see each XON or XOFF character that it
+ * sends, so lets just send each character
+ * by hand...
+ */
+#if 0
+ if (c == STOP_CHAR(tty)) {
+ dgap_cmdw(ch, RPAUSE, 0, 0);
+ }
+ else if (c == START_CHAR(tty)) {
+ dgap_cmdw(ch, RRESUME, 0, 0);
+ }
+ else {
+ dgap_wmove(ch, &c, 1);
+ }
+#else
+ dgap_wmove(ch, &c, 1);
+#endif
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_send_xchar finish\n"));
+
+ return;
+}
+
+
+
+
+/*
+ * Return modem signals to ld.
+ */
+static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value)
+{
+ int result = 0;
+ uchar mstat = 0;
+ ulong lock_flags;
+ int rc = 0;
+
+ DPR_IOCTL(("dgap_get_modem_info start\n"));
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return(-ENXIO);
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+
+ mstat = readb(&(ch->ch_bs->m_stat));
+ /* Append any outbound signals that might be pending... */
+ mstat |= ch->ch_mostat;
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ result = 0;
+
+ if (mstat & D_DTR(ch))
+ result |= TIOCM_DTR;
+ if (mstat & D_RTS(ch))
+ result |= TIOCM_RTS;
+ if (mstat & D_CTS(ch))
+ result |= TIOCM_CTS;
+ if (mstat & D_DSR(ch))
+ result |= TIOCM_DSR;
+ if (mstat & D_RI(ch))
+ result |= TIOCM_RI;
+ if (mstat & D_CD(ch))
+ result |= TIOCM_CD;
+
+ rc = put_user(result, value);
+
+ DPR_IOCTL(("dgap_get_modem_info finish\n"));
+ return(rc);
+}
+
+
+/*
+ * dgap_set_modem_info()
+ *
+ * Set modem signals, called by ld.
+ */
+static int dgap_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ int ret = -ENXIO;
+ unsigned int arg = 0;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return ret;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return ret;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return ret;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return ret;
+
+ DPR_IOCTL(("dgap_set_modem_info() start\n"));
+
+ ret = get_user(arg, value);
+ if (ret) {
+ DPR_IOCTL(("dgap_set_modem_info %d ret: %x. finished.\n", __LINE__, ret));
+ return(ret);
+ }
+
+ DPR_IOCTL(("dgap_set_modem_info: command: %x arg: %x\n", command, arg));
+
+ switch (command) {
+ case TIOCMBIS:
+ if (arg & TIOCM_RTS) {
+ ch->ch_mforce |= D_RTS(ch);
+ ch->ch_mval |= D_RTS(ch);
+ }
+
+ if (arg & TIOCM_DTR) {
+ ch->ch_mforce |= D_DTR(ch);
+ ch->ch_mval |= D_DTR(ch);
+ }
+
+ break;
+
+ case TIOCMBIC:
+ if (arg & TIOCM_RTS) {
+ ch->ch_mforce |= D_RTS(ch);
+ ch->ch_mval &= ~(D_RTS(ch));
+ }
+
+ if (arg & TIOCM_DTR) {
+ ch->ch_mforce |= D_DTR(ch);
+ ch->ch_mval &= ~(D_DTR(ch));
+ }
+
+ break;
+
+ case TIOCMSET:
+ ch->ch_mforce = D_DTR(ch)|D_RTS(ch);
+
+ if (arg & TIOCM_RTS) {
+ ch->ch_mval |= D_RTS(ch);
+ }
+ else {
+ ch->ch_mval &= ~(D_RTS(ch));
+ }
+
+ if (arg & TIOCM_DTR) {
+ ch->ch_mval |= (D_DTR(ch));
+ }
+ else {
+ ch->ch_mval &= ~(D_DTR(ch));
+ }
+
+ break;
+
+ default:
+ return(-EINVAL);
+ }
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ dgap_param(tty);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_set_modem_info finish\n"));
+
+ return (0);
+}
+
+
+/*
+ * dgap_tty_digigeta()
+ *
+ * Ioctl to get the information for ditty.
+ *
+ *
+ *
+ */
+static int dgap_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo)
+{
+ struct channel_t *ch;
+ struct un_t *un;
+ struct digi_t tmp;
+ ulong lock_flags;
+
+ if (!retinfo)
+ return (-EFAULT);
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return (-EFAULT);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (-EFAULT);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (-EFAULT);
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ memcpy(&tmp, &ch->ch_digi, sizeof(tmp));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return (-EFAULT);
+
+ return (0);
+}
+
+
+/*
+ * dgap_tty_digiseta()
+ *
+ * Ioctl to set the information for ditty.
+ *
+ *
+ *
+ */
+static int dgap_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ struct digi_t new_digi;
+ ulong lock_flags = 0;
+ unsigned long lock_flags2;
+
+ DPR_IOCTL(("DIGI_SETA start\n"));
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return (-EFAULT);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (-EFAULT);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (-EFAULT);
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (-EFAULT);
+
+ if (copy_from_user(&new_digi, new_info, sizeof(struct digi_t))) {
+ DPR_IOCTL(("DIGI_SETA failed copy_from_user\n"));
+ return(-EFAULT);
+ }
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ memcpy(&ch->ch_digi, &new_digi, sizeof(struct digi_t));
+
+ if (ch->ch_digi.digi_maxcps < 1)
+ ch->ch_digi.digi_maxcps = 1;
+
+ if (ch->ch_digi.digi_maxcps > 10000)
+ ch->ch_digi.digi_maxcps = 10000;
+
+ if (ch->ch_digi.digi_bufsize < 10)
+ ch->ch_digi.digi_bufsize = 10;
+
+ if (ch->ch_digi.digi_maxchar < 1)
+ ch->ch_digi.digi_maxchar = 1;
+
+ if (ch->ch_digi.digi_maxchar > ch->ch_digi.digi_bufsize)
+ ch->ch_digi.digi_maxchar = ch->ch_digi.digi_bufsize;
+
+ if (ch->ch_digi.digi_onlen > DIGI_PLEN)
+ ch->ch_digi.digi_onlen = DIGI_PLEN;
+
+ if (ch->ch_digi.digi_offlen > DIGI_PLEN)
+ ch->ch_digi.digi_offlen = DIGI_PLEN;
+
+ dgap_param(tty);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("DIGI_SETA finish\n"));
+
+ return(0);
+}
+
+
+/*
+ * dgap_tty_digigetedelay()
+ *
+ * Ioctl to get the current edelay setting.
+ *
+ *
+ *
+ */
+static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo)
+{
+ struct channel_t *ch;
+ struct un_t *un;
+ int tmp;
+ ulong lock_flags;
+
+ if (!retinfo)
+ return (-EFAULT);
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return (-EFAULT);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (-EFAULT);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (-EFAULT);
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ tmp = readw(&(ch->ch_bs->edelay));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return (-EFAULT);
+
+ return (0);
+}
+
+
+/*
+ * dgap_tty_digisetedelay()
+ *
+ * Ioctl to set the EDELAY setting
+ *
+ */
+static int dgap_tty_digisetedelay(struct tty_struct *tty, int __user *new_info)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ int new_digi;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ DPR_IOCTL(("DIGI_SETA start\n"));
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return (-EFAULT);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (-EFAULT);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (-EFAULT);
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (-EFAULT);
+
+ if (copy_from_user(&new_digi, new_info, sizeof(int))) {
+ DPR_IOCTL(("DIGI_SETEDELAY failed copy_from_user\n"));
+ return(-EFAULT);
+ }
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ writew((u16) new_digi, &(ch->ch_bs->edelay));
+
+ dgap_param(tty);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("DIGI_SETA finish\n"));
+
+ return(0);
+}
+
+
+/*
+ * dgap_tty_digigetcustombaud()
+ *
+ * Ioctl to get the current custom baud rate setting.
+ */
+static int dgap_tty_digigetcustombaud(struct tty_struct *tty, int __user *retinfo)
+{
+ struct channel_t *ch;
+ struct un_t *un;
+ int tmp;
+ ulong lock_flags;
+
+ if (!retinfo)
+ return (-EFAULT);
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return (-EFAULT);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (-EFAULT);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (-EFAULT);
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ DGAP_LOCK(ch->ch_lock, lock_flags);
+ tmp = dgap_get_custom_baud(ch);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+ DPR_IOCTL(("DIGI_GETCUSTOMBAUD. Returning %d\n", tmp));
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return (-EFAULT);
+
+ return (0);
+}
+
+
+/*
+ * dgap_tty_digisetcustombaud()
+ *
+ * Ioctl to set the custom baud rate setting
+ */
+static int dgap_tty_digisetcustombaud(struct tty_struct *tty, int __user *new_info)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ uint new_rate;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ DPR_IOCTL(("DIGI_SETCUSTOMBAUD start\n"));
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return (-EFAULT);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (-EFAULT);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (-EFAULT);
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (-EFAULT);
+
+
+ if (copy_from_user(&new_rate, new_info, sizeof(unsigned int))) {
+ DPR_IOCTL(("DIGI_SETCUSTOMBAUD failed copy_from_user\n"));
+ return(-EFAULT);
+ }
+
+ if (bd->bd_flags & BD_FEP5PLUS) {
+
+ DPR_IOCTL(("DIGI_SETCUSTOMBAUD. Setting %d\n", new_rate));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ ch->ch_custom_speed = new_rate;
+
+ dgap_param(tty);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ }
+
+ DPR_IOCTL(("DIGI_SETCUSTOMBAUD finish\n"));
+
+ return(0);
+}
+
+
+/*
+ * dgap_set_termios()
+ */
+static void dgap_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ unsigned long lock_flags;
+ unsigned long lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ ch->ch_c_cflag = tty->termios.c_cflag;
+ ch->ch_c_iflag = tty->termios.c_iflag;
+ ch->ch_c_oflag = tty->termios.c_oflag;
+ ch->ch_c_lflag = tty->termios.c_lflag;
+ ch->ch_startc = tty->termios.c_cc[VSTART];
+ ch->ch_stopc = tty->termios.c_cc[VSTOP];
+
+ dgap_carrier(ch);
+ dgap_param(tty);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+}
+
+
+static void dgap_tty_throttle(struct tty_struct *tty)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_IOCTL(("dgap_tty_throttle start\n"));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ ch->ch_flags |= (CH_RXBLOCK);
+#if 1
+ dgap_cmdw(ch, RPAUSE, 0, 0);
+#endif
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_throttle finish\n"));
+}
+
+
+static void dgap_tty_unthrottle(struct tty_struct *tty)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_IOCTL(("dgap_tty_unthrottle start\n"));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ ch->ch_flags &= ~(CH_RXBLOCK);
+
+#if 1
+ dgap_cmdw(ch, RRESUME, 0, 0);
+#endif
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_unthrottle finish\n"));
+}
+
+
+static void dgap_tty_start(struct tty_struct *tty)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_IOCTL(("dgap_tty_start start\n"));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ dgap_cmdw(ch, RESUMETX, 0, 0);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_start finish\n"));
+}
+
+
+static void dgap_tty_stop(struct tty_struct *tty)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_IOCTL(("dgap_tty_stop start\n"));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ dgap_cmdw(ch, PAUSETX, 0, 0);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_stop finish\n"));
+}
+
+
+/*
+ * dgap_tty_flush_chars()
+ *
+ * Flush the cook buffer
+ *
+ * Note to self, and any other poor souls who venture here:
+ *
+ * flush in this case DOES NOT mean dispose of the data.
+ * instead, it means "stop buffering and send it if you
+ * haven't already." Just guess how I figured that out... SRW 2-Jun-98
+ *
+ * It is also always called in interrupt context - JAR 8-Sept-99
+ */
+static void dgap_tty_flush_chars(struct tty_struct *tty)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ ulong lock_flags2;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_IOCTL(("dgap_tty_flush_chars start\n"));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ /* TODO: Do something here */
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_flush_chars finish\n"));
+}
+
+
+
+/*
+ * dgap_tty_flush_buffer()
+ *
+ * Flush Tx buffer (make in == out)
+ */
+static void dgap_tty_flush_buffer(struct tty_struct *tty)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ ulong lock_flags;
+ ulong lock_flags2;
+ u16 head = 0;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return;
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return;
+
+ DPR_IOCTL(("dgap_tty_flush_buffer on port: %d start\n", ch->ch_portnum));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ ch->ch_flags &= ~CH_STOP;
+ head = readw(&(ch->ch_bs->tx_head));
+ dgap_cmdw(ch, FLUSHTX, (u16) head, 0);
+ dgap_cmdw(ch, RESUMETX, 0, 0);
+ if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
+ ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
+ wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+ }
+ if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
+ ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
+ wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+ }
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ if (waitqueue_active(&tty->write_wait))
+ wake_up_interruptible(&tty->write_wait);
+ tty_wakeup(tty);
+
+ DPR_IOCTL(("dgap_tty_flush_buffer finish\n"));
+}
+
+
+
+/*****************************************************************************
+ *
+ * The IOCTL function and all of its helpers
+ *
+ *****************************************************************************/
+
+/*
+ * dgap_tty_ioctl()
+ *
+ * The usual assortment of ioctl's
+ */
+static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
+ unsigned long arg)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ int rc;
+ u16 head = 0;
+ ulong lock_flags = 0;
+ ulong lock_flags2 = 0;
+ void __user *uarg = (void __user *) arg;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return (-ENODEV);
+
+ un = tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (-ENODEV);
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (-ENODEV);
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (-ENODEV);
+
+ DPR_IOCTL(("dgap_tty_ioctl start on port %d - cmd %s (%x), arg %lx\n",
+ ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ if (un->un_open_count <= 0) {
+ DPR_BASIC(("dgap_tty_ioctl - unit not open.\n"));
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(-EIO);
+ }
+
+ switch (cmd) {
+
+ /* Here are all the standard ioctl's that we MUST implement */
+
+ case TCSBRK:
+ /*
+ * TCSBRK is SVID version: non-zero arg --> no break
+ * this behaviour is exploited by tcdrain().
+ *
+ * According to POSIX.1 spec (7.2.2.1.2) breaks should be
+ * between 0.25 and 0.5 seconds so we'll ask for something
+ * in the middle: 0.375 seconds.
+ */
+ rc = tty_check_change(tty);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ if (rc) {
+ return(rc);
+ }
+
+ rc = dgap_wait_for_drain(tty);
+
+ if (rc) {
+ DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+ return(-EINTR);
+ }
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ if(((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP)) {
+ dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+ }
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
+ ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+ return(0);
+
+
+ case TCSBRKP:
+ /* support for POSIX tcsendbreak()
+
+ * According to POSIX.1 spec (7.2.2.1.2) breaks should be
+ * between 0.25 and 0.5 seconds so we'll ask for something
+ * in the middle: 0.375 seconds.
+ */
+ rc = tty_check_change(tty);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ if (rc) {
+ return(rc);
+ }
+
+ rc = dgap_wait_for_drain(tty);
+ if (rc) {
+ DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+ return(-EINTR);
+ }
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
+ ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+ return(0);
+
+ case TIOCSBRK:
+ /*
+ * FEP5 doesn't support turning on a break unconditionally.
+ * The FEP5 device will stop sending a break automatically
+ * after the specified time value that was sent when turning on
+ * the break.
+ */
+ rc = tty_check_change(tty);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ if (rc) {
+ return(rc);
+ }
+
+ rc = dgap_wait_for_drain(tty);
+ if (rc) {
+ DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+ return(-EINTR);
+ }
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
+ ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+ return 0;
+
+ case TIOCCBRK:
+ /*
+ * FEP5 doesn't support turning off a break unconditionally.
+ * The FEP5 device will stop sending a break automatically
+ * after the specified time value that was sent when turning on
+ * the break.
+ */
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return 0;
+
+ case TIOCGSOFTCAR:
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) arg);
+ return(rc);
+
+ case TIOCSSOFTCAR:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ rc = get_user(arg, (unsigned long __user *) arg);
+ if (rc)
+ return(rc);
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+ tty->termios.c_cflag = ((tty->termios.c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
+ dgap_param(tty);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ return(0);
+
+ case TIOCMGET:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_get_modem_info(ch, uarg));
+
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_set_modem_info(tty, cmd, uarg));
+
+ /*
+ * Here are any additional ioctl's that we want to implement
+ */
+
+ case TCFLSH:
+ /*
+ * The linux tty driver doesn't have a flush
+ * input routine for the driver, assuming all backed
+ * up data is in the line disc. buffers. However,
+ * we all know that's not the case. Here, we
+ * act on the ioctl, but then lie and say we didn't
+ * so the line discipline will process the flush
+ * also.
+ */
+ rc = tty_check_change(tty);
+ if (rc) {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(rc);
+ }
+
+ if ((arg == TCIFLUSH) || (arg == TCIOFLUSH)) {
+ if (!(un->un_type == DGAP_PRINT)) {
+ head = readw(&(ch->ch_bs->rx_head));
+ writew(head, &(ch->ch_bs->rx_tail));
+ writeb(0, &(ch->ch_bs->orun));
+ }
+ }
+
+ if ((arg == TCOFLUSH) || (arg == TCIOFLUSH)) {
+ ch->ch_flags &= ~CH_STOP;
+ head = readw(&(ch->ch_bs->tx_head));
+ dgap_cmdw(ch, FLUSHTX, (u16) head, 0 );
+ dgap_cmdw(ch, RESUMETX, 0, 0);
+ if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
+ ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
+ wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+ }
+ if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
+ ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
+ wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+ }
+ if (waitqueue_active(&tty->write_wait))
+ wake_up_interruptible(&tty->write_wait);
+
+ /* Can't hold any locks when calling tty_wakeup! */
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ tty_wakeup(tty);
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+ }
+
+ /* pretend we didn't recognize this IOCTL */
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_ioctl (LINE:%d) finish on port %d - cmd %s (%x), arg %lx\n",
+ __LINE__, ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+ return(-ENOIOCTLCMD);
+
+ case TCSETSF:
+ case TCSETSW:
+ /*
+ * The linux tty driver doesn't have a flush
+ * input routine for the driver, assuming all backed
+ * up data is in the line disc. buffers. However,
+ * we all know that's not the case. Here, we
+ * act on the ioctl, but then lie and say we didn't
+ * so the line discipline will process the flush
+ * also.
+ */
+ if (cmd == TCSETSF) {
+ /* flush rx */
+ ch->ch_flags &= ~CH_STOP;
+ head = readw(&(ch->ch_bs->rx_head));
+ writew(head, &(ch->ch_bs->rx_tail));
+ }
+
+ /* now wait for all the output to drain */
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ rc = dgap_wait_for_drain(tty);
+ if (rc) {
+ DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+ return(-EINTR);
+ }
+
+ DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
+ ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+ /* pretend we didn't recognize this */
+ return(-ENOIOCTLCMD);
+
+ case TCSETAW:
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ rc = dgap_wait_for_drain(tty);
+ if (rc) {
+ DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+ return(-EINTR);
+ }
+
+ /* pretend we didn't recognize this */
+ return(-ENOIOCTLCMD);
+
+ case TCXONC:
+ /*
+ * The Linux Line Discipline (LD) would do this for us if we
+ * let it, but we have the special firmware options to do this
+ * the "right way" regardless of hardware or software flow
+ * control so we'll do it outselves instead of letting the LD
+ * do it.
+ */
+ rc = tty_check_change(tty);
+ if (rc) {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(rc);
+ }
+
+ DPR_IOCTL(("dgap_ioctl - in TCXONC - %d\n", cmd));
+ switch (arg) {
+
+ case TCOON:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ dgap_tty_start(tty);
+ return(0);
+ case TCOOFF:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ dgap_tty_stop(tty);
+ return(0);
+ case TCION:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ /* Make the ld do it */
+ return(-ENOIOCTLCMD);
+ case TCIOFF:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ /* Make the ld do it */
+ return(-ENOIOCTLCMD);
+ default:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(-EINVAL);
+ }
+
+ case DIGI_GETA:
+ /* get information for ditty */
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_tty_digigeta(tty, uarg));
+
+ case DIGI_SETAW:
+ case DIGI_SETAF:
+
+ /* set information for ditty */
+ if (cmd == (DIGI_SETAW)) {
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ rc = dgap_wait_for_drain(tty);
+ if (rc) {
+ DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+ return(-EINTR);
+ }
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+ }
+ else {
+ tty_ldisc_flush(tty);
+ }
+ /* fall thru */
+
+ case DIGI_SETA:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_tty_digiseta(tty, uarg));
+
+ case DIGI_GEDELAY:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_tty_digigetedelay(tty, uarg));
+
+ case DIGI_SEDELAY:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_tty_digisetedelay(tty, uarg));
+
+ case DIGI_GETCUSTOMBAUD:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_tty_digigetcustombaud(tty, uarg));
+
+ case DIGI_SETCUSTOMBAUD:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return(dgap_tty_digisetcustombaud(tty, uarg));
+
+ case DIGI_RESET_PORT:
+ dgap_firmware_reset_port(ch);
+ dgap_param(tty);
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return 0;
+
+ default:
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ DPR_IOCTL(("dgap_tty_ioctl - in default\n"));
+ DPR_IOCTL(("dgap_tty_ioctl end - cmd %s (%x), arg %lx\n",
+ dgap_ioctl_name(cmd), cmd, arg));
+
+ return(-ENOIOCTLCMD);
+ }
+}
+/*
+ * Loads the dgap.conf config file from the user.
+ */
+static void dgap_do_config_load(uchar __user *uaddr, int len)
+{
+ int orig_len = len;
+ char *to_addr;
+ uchar __user *from_addr = uaddr;
+ char buf[U2BSIZE];
+ int n;
+
+ to_addr = dgap_config_buf = kzalloc(len + 1, GFP_ATOMIC);
+ if (!dgap_config_buf) {
+ DPR_INIT(("dgap_do_config_load - unable to allocate memory for file\n"));
+ dgap_driver_state = DRIVER_NEED_CONFIG_LOAD;
+ return;
+ }
+
+ n = U2BSIZE;
+ while (len) {
+
+ if (n > len)
+ n = len;
+
+ if (copy_from_user((char *) &buf, from_addr, n) == -1 )
+ return;
+
+ /* Copy data from buffer to kernel memory */
+ memcpy(to_addr, buf, n);
+
+ /* increment counts */
+ len -= n;
+ to_addr += n;
+ from_addr += n;
+ n = U2BSIZE;
+ }
+
+ dgap_config_buf[orig_len] = '\0';
+
+ to_addr = dgap_config_buf;
+ dgap_parsefile(&to_addr, TRUE);
+
+ DPR_INIT(("dgap_config_load() finish\n"));
+
+ return;
+}
+
+
+static int dgap_after_config_loaded(void)
+{
+ int i = 0;
+ int rc = 0;
+
+ /*
+ * Register our ttys, now that we have the config loaded.
+ */
+ for (i = 0; i < dgap_NumBoards; ++i) {
+
+ /*
+ * Initialize KME waitqueues...
+ */
+ init_waitqueue_head(&(dgap_Board[i]->kme_wait));
+
+ /*
+ * allocate flip buffer for board.
+ */
+ dgap_Board[i]->flipbuf = kzalloc(MYFLIPLEN, GFP_ATOMIC);
+ dgap_Board[i]->flipflagbuf = kzalloc(MYFLIPLEN, GFP_ATOMIC);
+ }
+
+ return rc;
+}
+
+
+
+/*=======================================================================
+ *
+ * usertoboard - copy from user space to board space.
+ *
+ *=======================================================================*/
+static int dgap_usertoboard(struct board_t *brd, char *to_addr, char __user *from_addr, int len)
+{
+ char buf[U2BSIZE];
+ int n = U2BSIZE;
+
+ if (!brd || brd->magic != DGAP_BOARD_MAGIC)
+ return -EFAULT;
+
+ while (len) {
+ if (n > len)
+ n = len;
+
+ if (copy_from_user((char *) &buf, from_addr, n) == -1 ) {
+ return -EFAULT;
+ }
+
+ /* Copy data from buffer to card memory */
+ memcpy_toio(to_addr, buf, n);
+
+ /* increment counts */
+ len -= n;
+ to_addr += n;
+ from_addr += n;
+ n = U2BSIZE;
+ }
+ return 0;
+}
+
+
+/*
+ * Copies the BIOS code from the user to the board,
+ * and starts the BIOS running.
+ */
+static void dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len)
+{
+ uchar *addr;
+ uint offset;
+ int i;
+
+ if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+ return;
+
+ DPR_INIT(("dgap_do_bios_load() start\n"));
+
+ addr = brd->re_map_membase;
+
+ /*
+ * clear POST area
+ */
+ for (i = 0; i < 16; i++)
+ writeb(0, addr + POSTAREA + i);
+
+ /*
+ * Download bios
+ */
+ offset = 0x1000;
+ if (dgap_usertoboard(brd, addr + offset, ubios, len) == -1 ) {
+ brd->state = BOARD_FAILED;
+ brd->dpastatus = BD_NOFEP;
+ return;
+ }
+
+ writel(0x0bf00401, addr);
+ writel(0, (addr + 4));
+
+ /* Clear the reset, and change states. */
+ writeb(FEPCLR, brd->re_map_port);
+ brd->state = WAIT_BIOS_LOAD;
+}
+
+
+/*
+ * Checks to see if the BIOS completed running on the card.
+ */
+static void dgap_do_wait_for_bios(struct board_t *brd)
+{
+ uchar *addr;
+ u16 word;
+
+ if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+ return;
+
+ addr = brd->re_map_membase;
+ word = readw(addr + POSTAREA);
+
+ /* Check to see if BIOS thinks board is good. (GD). */
+ if (word == *(u16 *) "GD") {
+ DPR_INIT(("GOT GD in memory, moving states.\n"));
+ brd->state = FINISHED_BIOS_LOAD;
+ return;
+ }
+
+ /* Give up on board after too long of time taken */
+ if (brd->wait_for_bios++ > 5000) {
+ u16 err1 = readw(addr + SEQUENCE);
+ u16 err2 = readw(addr + ERROR);
+ APR(("***WARNING*** %s failed diagnostics. Error #(%x,%x).\n",
+ brd->name, err1, err2));
+ brd->state = BOARD_FAILED;
+ brd->dpastatus = BD_NOFEP;
+ }
+}
+
+
+/*
+ * Copies the FEP code from the user to the board,
+ * and starts the FEP running.
+ */
+static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len)
+{
+ uchar *addr;
+ uint offset;
+
+ if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+ return;
+
+ addr = brd->re_map_membase;
+
+ DPR_INIT(("dgap_do_fep_load() for board %s : start\n", brd->name));
+
+ /*
+ * Download FEP
+ */
+ offset = 0x1000;
+ if (dgap_usertoboard(brd, addr + offset, ufep, len) == -1 ) {
+ brd->state = BOARD_FAILED;
+ brd->dpastatus = BD_NOFEP;
+ return;
+ }
+
+ /*
+ * If board is a concentrator product, we need to give
+ * it its config string describing how the concentrators look.
+ */
+ if ((brd->type == PCX) || (brd->type == PEPC)) {
+ uchar string[100];
+ uchar *config, *xconfig;
+ int i = 0;
+
+ xconfig = dgap_create_config_string(brd, string);
+
+ /* Write string to board memory */
+ config = addr + CONFIG;
+ for (; i < CONFIGSIZE; i++, config++, xconfig++) {
+ writeb(*xconfig, config);
+ if ((*xconfig & 0xff) == 0xff)
+ break;
+ }
+ }
+
+ writel(0xbfc01004, (addr + 0xc34));
+ writel(0x3, (addr + 0xc30));
+
+ /* change states. */
+ brd->state = WAIT_FEP_LOAD;
+
+ DPR_INIT(("dgap_do_fep_load() for board %s : finish\n", brd->name));
+
+}
+
+
+/*
+ * Waits for the FEP to report thats its ready for us to use.
+ */
+static void dgap_do_wait_for_fep(struct board_t *brd)
+{
+ uchar *addr;
+ u16 word;
+
+ if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+ return;
+
+ addr = brd->re_map_membase;
+
+ DPR_INIT(("dgap_do_wait_for_fep() for board %s : start. addr: %p\n", brd->name, addr));
+
+ word = readw(addr + FEPSTAT);
+
+ /* Check to see if FEP is up and running now. */
+ if (word == *(u16 *) "OS") {
+ DPR_INIT(("GOT OS in memory for board %s, moving states.\n", brd->name));
+ brd->state = FINISHED_FEP_LOAD;
+
+ /*
+ * Check to see if the board can support FEP5+ commands.
+ */
+ word = readw(addr + FEP5_PLUS);
+ if (word == *(u16 *) "5A") {
+ DPR_INIT(("GOT 5A in memory for board %s, board supports extended FEP5 commands.\n", brd->name));
+ brd->bd_flags |= BD_FEP5PLUS;
+ }
+
+ return;
+ }
+
+ /* Give up on board after too long of time taken */
+ if (brd->wait_for_fep++ > 5000) {
+ u16 err1 = readw(addr + SEQUENCE);
+ u16 err2 = readw(addr + ERROR);
+ APR(("***WARNING*** FEPOS for %s not functioning. Error #(%x,%x).\n",
+ brd->name, err1, err2));
+ brd->state = BOARD_FAILED;
+ brd->dpastatus = BD_NOFEP;
+ }
+
+ DPR_INIT(("dgap_do_wait_for_fep() for board %s : finish\n", brd->name));
+}
+
+
+/*
+ * Physically forces the FEP5 card to reset itself.
+ */
+static void dgap_do_reset_board(struct board_t *brd)
+{
+ uchar check;
+ u32 check1;
+ u32 check2;
+ int i = 0;
+
+ if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase || !brd->re_map_port) {
+ DPR_INIT(("dgap_do_reset_board() start. bad values. brd: %p mem: %p io: %p\n",
+ brd, brd ? brd->re_map_membase : 0, brd ? brd->re_map_port : 0));
+ return;
+ }
+
+ DPR_INIT(("dgap_do_reset_board() start. io: %p\n", brd->re_map_port));
+
+ /* FEPRST does not vary among supported boards */
+ writeb(FEPRST, brd->re_map_port);
+
+ for (i = 0; i <= 1000; i++) {
+ check = readb(brd->re_map_port) & 0xe;
+ if (check == FEPRST)
+ break;
+ udelay(10);
+
+ }
+ if (i > 1000) {
+ APR(("*** WARNING *** Board not resetting... Failing board.\n"));
+ brd->state = BOARD_FAILED;
+ brd->dpastatus = BD_NOFEP;
+ goto failed;
+ }
+
+ /*
+ * Make sure there really is memory out there.
+ */
+ writel(0xa55a3cc3, (brd->re_map_membase + LOWMEM));
+ writel(0x5aa5c33c, (brd->re_map_membase + HIGHMEM));
+ check1 = readl(brd->re_map_membase + LOWMEM);
+ check2 = readl(brd->re_map_membase + HIGHMEM);
+
+ if ((check1 != 0xa55a3cc3) || (check2 != 0x5aa5c33c)) {
+ APR(("*** Warning *** No memory at %p for board.\n", brd->re_map_membase));
+ brd->state = BOARD_FAILED;
+ brd->dpastatus = BD_NOFEP;
+ goto failed;
+ }
+
+ if (brd->state != BOARD_FAILED)
+ brd->state = FINISHED_RESET;
+
+failed:
+ DPR_INIT(("dgap_do_reset_board() finish\n"));
+}
+
+
+/*
+ * Sends a concentrator image into the FEP5 board.
+ */
+static void dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len)
+{
+ char *vaddr;
+ u16 offset = 0;
+ struct downld_t *to_dp;
+
+ if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+ return;
+
+ vaddr = brd->re_map_membase;
+
+ offset = readw((u16 *) (vaddr + DOWNREQ));
+ to_dp = (struct downld_t *) (vaddr + (int) offset);
+
+ /*
+ * The image was already read into kernel space,
+ * we do NOT need a user space read here
+ */
+ memcpy_toio((char *) to_dp, uaddr, sizeof(struct downld_t));
+
+ /* Tell card we have data for it */
+ writew(0, vaddr + (DOWNREQ));
+
+ brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
+}
+
+
+#define EXPANSION_ROM_SIZE (64 * 1024)
+#define FEP5_ROM_MAGIC (0xFEFFFFFF)
+
+static void dgap_get_vpd(struct board_t *brd)
+{
+ u32 magic;
+ u32 base_offset;
+ u16 rom_offset;
+ u16 vpd_offset;
+ u16 image_length;
+ u16 i;
+ uchar byte1;
+ uchar byte2;
+
+ /*
+ * Poke the magic number at the PCI Rom Address location.
+ * If VPD is supported, the value read from that address
+ * will be non-zero.
+ */
+ magic = FEP5_ROM_MAGIC;
+ pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
+ pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
+
+ /* VPD not supported, bail */
+ if (!magic)
+ return;
+
+ /*
+ * To get to the OTPROM memory, we have to send the boards base
+ * address or'ed with 1 into the PCI Rom Address location.
+ */
+ magic = brd->membase | 0x01;
+ pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
+ pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
+
+ byte1 = readb(brd->re_map_membase);
+ byte2 = readb(brd->re_map_membase + 1);
+
+ /*
+ * If the board correctly swapped to the OTPROM memory,
+ * the first 2 bytes (header) should be 0x55, 0xAA
+ */
+ if (byte1 == 0x55 && byte2 == 0xAA) {
+
+ base_offset = 0;
+
+ /*
+ * We have to run through all the OTPROM memory looking
+ * for the VPD offset.
+ */
+ while (base_offset <= EXPANSION_ROM_SIZE) {
+
+ /*
+ * Lots of magic numbers here.
+ *
+ * The VPD offset is located inside the ROM Data Structure.
+ * We also have to remember the length of each
+ * ROM Data Structure, so we can "hop" to the next
+ * entry if the VPD isn't in the current
+ * ROM Data Structure.
+ */
+ rom_offset = readw(brd->re_map_membase + base_offset + 0x18);
+ image_length = readw(brd->re_map_membase + rom_offset + 0x10) * 512;
+ vpd_offset = readw(brd->re_map_membase + rom_offset + 0x08);
+
+ /* Found the VPD entry */
+ if (vpd_offset)
+ break;
+
+ /* We didn't find a VPD entry, go to next ROM entry. */
+ base_offset += image_length;
+
+ byte1 = readb(brd->re_map_membase + base_offset);
+ byte2 = readb(brd->re_map_membase + base_offset + 1);
+
+ /*
+ * If the new ROM offset doesn't have 0x55, 0xAA
+ * as its header, we have run out of ROM.
+ */
+ if (byte1 != 0x55 || byte2 != 0xAA)
+ break;
+ }
+
+ /*
+ * If we have a VPD offset, then mark the board
+ * as having a valid VPD, and copy VPDSIZE (512) bytes of
+ * that VPD to the buffer we have in our board structure.
+ */
+ if (vpd_offset) {
+ brd->bd_flags |= BD_HAS_VPD;
+ for (i = 0; i < VPDSIZE; i++)
+ brd->vpd[i] = readb(brd->re_map_membase + vpd_offset + i);
+ }
+ }
+
+ /*
+ * We MUST poke the magic number at the PCI Rom Address location again.
+ * This makes the card report the regular board memory back to us,
+ * rather than the OTPROM memory.
+ */
+ magic = FEP5_ROM_MAGIC;
+ pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
+}
+
+
+/*
+ * Our board poller function.
+ */
+static void dgap_poll_tasklet(unsigned long data)
+{
+ struct board_t *bd = (struct board_t *) data;
+ ulong lock_flags;
+ ulong lock_flags2;
+ char *vaddr;
+ u16 head, tail;
+ u16 *chk_addr;
+ u16 check = 0;
+
+ if (!bd || (bd->magic != DGAP_BOARD_MAGIC)) {
+ APR(("dgap_poll_tasklet() - NULL or bad bd.\n"));
+ return;
+ }
+
+ if (bd->inhibit_poller)
+ return;
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+
+ vaddr = bd->re_map_membase;
+
+ /*
+ * If board is ready, parse deeper to see if there is anything to do.
+ */
+ if (bd->state == BOARD_READY) {
+
+ struct ev_t *eaddr = NULL;
+
+ if (!bd->re_map_membase) {
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return;
+ }
+ if (!bd->re_map_port) {
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return;
+ }
+
+ if (!bd->nasync) {
+ goto out;
+ }
+
+ /*
+ * If this is a CX or EPCX, we need to see if the firmware
+ * is requesting a concentrator image from us.
+ */
+ if ((bd->type == PCX) || (bd->type == PEPC)) {
+ chk_addr = (u16 *) (vaddr + DOWNREQ);
+ check = readw(chk_addr);
+ /* Nonzero if FEP is requesting concentrator image. */
+ if (check) {
+ if (bd->conc_dl_status == NO_PENDING_CONCENTRATOR_REQUESTS)
+ bd->conc_dl_status = NEED_CONCENTRATOR;
+ /*
+ * Signal downloader, its got some work to do.
+ */
+ DGAP_LOCK(dgap_dl_lock, lock_flags2);
+ if (dgap_dl_action != 1) {
+ dgap_dl_action = 1;
+ wake_up_interruptible(&dgap_dl_wait);
+ }
+ DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+
+ }
+ }
+
+ eaddr = (struct ev_t *) (vaddr + EVBUF);
+
+ /* Get our head and tail */
+ head = readw(&(eaddr->ev_head));
+ tail = readw(&(eaddr->ev_tail));
+
+ /*
+ * If there is an event pending. Go service it.
+ */
+ if (head != tail) {
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ dgap_event(bd);
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ }
+
+out:
+ /*
+ * If board is doing interrupts, ACK the interrupt.
+ */
+ if (bd && bd->intr_running) {
+ readb(bd->re_map_port + 2);
+ }
+
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return;
+ }
+
+ /* Our state machine to get the board up and running */
+
+ /* Reset board */
+ if (bd->state == NEED_RESET) {
+
+ /* Get VPD info */
+ dgap_get_vpd(bd);
+
+ dgap_do_reset_board(bd);
+ }
+
+ /* Move to next state */
+ if (bd->state == FINISHED_RESET) {
+ bd->state = NEED_CONFIG;
+ }
+
+ if (bd->state == NEED_CONFIG) {
+ /*
+ * Match this board to a config the user created for us.
+ */
+ bd->bd_config = dgap_find_config(bd->type, bd->pci_bus, bd->pci_slot);
+
+ /*
+ * Because the 4 port Xr products share the same PCI ID
+ * as the 8 port Xr products, if we receive a NULL config
+ * back, and this is a PAPORT8 board, retry with a
+ * PAPORT4 attempt as well.
+ */
+ if (bd->type == PAPORT8 && !bd->bd_config) {
+ bd->bd_config = dgap_find_config(PAPORT4, bd->pci_bus, bd->pci_slot);
+ }
+
+ /*
+ * Register the ttys (if any) into the kernel.
+ */
+ if (bd->bd_config) {
+ bd->state = FINISHED_CONFIG;
+ }
+ else {
+ bd->state = CONFIG_NOT_FOUND;
+ }
+ }
+
+ /* Move to next state */
+ if (bd->state == FINISHED_CONFIG) {
+ bd->state = NEED_DEVICE_CREATION;
+ }
+
+ /* Move to next state */
+ if (bd->state == NEED_DEVICE_CREATION) {
+ /*
+ * Signal downloader, its got some work to do.
+ */
+ DGAP_LOCK(dgap_dl_lock, lock_flags2);
+ if (dgap_dl_action != 1) {
+ dgap_dl_action = 1;
+ wake_up_interruptible(&dgap_dl_wait);
+ }
+ DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+ }
+
+ /* Move to next state */
+ if (bd->state == FINISHED_DEVICE_CREATION) {
+ bd->state = NEED_BIOS_LOAD;
+ }
+
+ /* Move to next state */
+ if (bd->state == NEED_BIOS_LOAD) {
+ /*
+ * Signal downloader, its got some work to do.
+ */
+ DGAP_LOCK(dgap_dl_lock, lock_flags2);
+ if (dgap_dl_action != 1) {
+ dgap_dl_action = 1;
+ wake_up_interruptible(&dgap_dl_wait);
+ }
+ DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+ }
+
+ /* Wait for BIOS to test board... */
+ if (bd->state == WAIT_BIOS_LOAD) {
+ dgap_do_wait_for_bios(bd);
+ }
+
+ /* Move to next state */
+ if (bd->state == FINISHED_BIOS_LOAD) {
+ bd->state = NEED_FEP_LOAD;
+
+ /*
+ * Signal downloader, its got some work to do.
+ */
+ DGAP_LOCK(dgap_dl_lock, lock_flags2);
+ if (dgap_dl_action != 1) {
+ dgap_dl_action = 1;
+ wake_up_interruptible(&dgap_dl_wait);
+ }
+ DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+ }
+
+ /* Wait for FEP to load on board... */
+ if (bd->state == WAIT_FEP_LOAD) {
+ dgap_do_wait_for_fep(bd);
+ }
+
+
+ /* Move to next state */
+ if (bd->state == FINISHED_FEP_LOAD) {
+
+ /*
+ * Do tty device initialization.
+ */
+ int rc = dgap_tty_init(bd);
+
+ if (rc < 0) {
+ dgap_tty_uninit(bd);
+ APR(("Can't init tty devices (%d)\n", rc));
+ bd->state = BOARD_FAILED;
+ bd->dpastatus = BD_NOFEP;
+ }
+ else {
+ bd->state = NEED_PROC_CREATION;
+
+ /*
+ * Signal downloader, its got some work to do.
+ */
+ DGAP_LOCK(dgap_dl_lock, lock_flags2);
+ if (dgap_dl_action != 1) {
+ dgap_dl_action = 1;
+ wake_up_interruptible(&dgap_dl_wait);
+ }
+ DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+ }
+ }
+
+ /* Move to next state */
+ if (bd->state == FINISHED_PROC_CREATION) {
+
+ bd->state = BOARD_READY;
+ bd->dpastatus = BD_RUNNING;
+
+ /*
+ * If user requested the board to run in interrupt mode,
+ * go and set it up on the board.
+ */
+ if (bd->intr_used) {
+ writew(1, (bd->re_map_membase + ENABLE_INTR));
+ /*
+ * Tell the board to poll the UARTS as fast as possible.
+ */
+ writew(FEPPOLL_MIN, (bd->re_map_membase + FEPPOLL));
+ bd->intr_running = 1;
+ }
+
+ /* Wake up anyone waiting for board state to change to ready */
+ wake_up_interruptible(&bd->state_wait);
+ }
+
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+}
+
+
+/*=======================================================================
+ *
+ * dgap_cmdb - Sends a 2 byte command to the FEP.
+ *
+ * ch - Pointer to channel structure.
+ * cmd - Command to be sent.
+ * byte1 - Integer containing first byte to be sent.
+ * byte2 - Integer containing second byte to be sent.
+ * ncmds - Wait until ncmds or fewer cmds are left
+ * in the cmd buffer before returning.
+ *
+ *=======================================================================*/
+static void dgap_cmdb(struct channel_t *ch, uchar cmd, uchar byte1, uchar byte2, uint ncmds)
+{
+ char *vaddr = NULL;
+ struct cm_t *cm_addr = NULL;
+ uint count;
+ uint n;
+ u16 head;
+ u16 tail;
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ /*
+ * Check if board is still alive.
+ */
+ if (ch->ch_bd->state == BOARD_FAILED) {
+ DPR_CORE(("%s:%d board is in failed state.\n", __FILE__, __LINE__));
+ return;
+ }
+
+ /*
+ * Make sure the pointers are in range before
+ * writing to the FEP memory.
+ */
+ vaddr = ch->ch_bd->re_map_membase;
+
+ if (!vaddr)
+ return;
+
+ cm_addr = (struct cm_t *) (vaddr + CMDBUF);
+ head = readw(&(cm_addr->cm_head));
+
+ /*
+ * Forget it if pointers out of range.
+ */
+ if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
+ DPR_CORE(("%s:%d pointers out of range, failing board!\n", __FILE__, __LINE__));
+ ch->ch_bd->state = BOARD_FAILED;
+ return;
+ }
+
+ /*
+ * Put the data in the circular command buffer.
+ */
+ writeb(cmd, (char *) (vaddr + head + CMDSTART + 0));
+ writeb((uchar) ch->ch_portnum, (char *) (vaddr + head + CMDSTART + 1));
+ writeb(byte1, (char *) (vaddr + head + CMDSTART + 2));
+ writeb(byte2, (char *) (vaddr + head + CMDSTART + 3));
+
+ head = (head + 4) & (CMDMAX - CMDSTART - 4);
+
+ writew(head, &(cm_addr->cm_head));
+
+ /*
+ * Wait if necessary before updating the head
+ * pointer to limit the number of outstanding
+ * commands to the FEP. If the time spent waiting
+ * is outlandish, declare the FEP dead.
+ */
+ for (count = dgap_count ;;) {
+
+ head = readw(&(cm_addr->cm_head));
+ tail = readw(&(cm_addr->cm_tail));
+
+ n = (head - tail) & (CMDMAX - CMDSTART - 4);
+
+ if (n <= ncmds * sizeof(struct cm_t))
+ break;
+
+ if (--count == 0) {
+ DPR_CORE(("%s:%d failing board.\n",__FILE__, __LINE__));
+ ch->ch_bd->state = BOARD_FAILED;
+ return;
+ }
+ udelay(10);
+ }
+}
+
+
+/*=======================================================================
+ *
+ * dgap_cmdw - Sends a 1 word command to the FEP.
+ *
+ * ch - Pointer to channel structure.
+ * cmd - Command to be sent.
+ * word - Integer containing word to be sent.
+ * ncmds - Wait until ncmds or fewer cmds are left
+ * in the cmd buffer before returning.
+ *
+ *=======================================================================*/
+static void dgap_cmdw(struct channel_t *ch, uchar cmd, u16 word, uint ncmds)
+{
+ char *vaddr = NULL;
+ struct cm_t *cm_addr = NULL;
+ uint count;
+ uint n;
+ u16 head;
+ u16 tail;
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ /*
+ * Check if board is still alive.
+ */
+ if (ch->ch_bd->state == BOARD_FAILED) {
+ DPR_CORE(("%s:%d board is failed!\n", __FILE__, __LINE__));
+ return;
+ }
+
+ /*
+ * Make sure the pointers are in range before
+ * writing to the FEP memory.
+ */
+ vaddr = ch->ch_bd->re_map_membase;
+ if (!vaddr)
+ return;
+
+ cm_addr = (struct cm_t *) (vaddr + CMDBUF);
+ head = readw(&(cm_addr->cm_head));
+
+ /*
+ * Forget it if pointers out of range.
+ */
+ if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
+ DPR_CORE(("%s:%d Pointers out of range. Failing board.\n",__FILE__, __LINE__));
+ ch->ch_bd->state = BOARD_FAILED;
+ return;
+ }
+
+ /*
+ * Put the data in the circular command buffer.
+ */
+ writeb(cmd, (char *) (vaddr + head + CMDSTART + 0));
+ writeb((uchar) ch->ch_portnum, (char *) (vaddr + head + CMDSTART + 1));
+ writew((u16) word, (char *) (vaddr + head + CMDSTART + 2));
+
+ head = (head + 4) & (CMDMAX - CMDSTART - 4);
+
+ writew(head, &(cm_addr->cm_head));
+
+ /*
+ * Wait if necessary before updating the head
+ * pointer to limit the number of outstanding
+ * commands to the FEP. If the time spent waiting
+ * is outlandish, declare the FEP dead.
+ */
+ for (count = dgap_count ;;) {
+
+ head = readw(&(cm_addr->cm_head));
+ tail = readw(&(cm_addr->cm_tail));
+
+ n = (head - tail) & (CMDMAX - CMDSTART - 4);
+
+ if (n <= ncmds * sizeof(struct cm_t))
+ break;
+
+ if (--count == 0) {
+ DPR_CORE(("%s:%d Failing board.\n",__FILE__, __LINE__));
+ ch->ch_bd->state = BOARD_FAILED;
+ return;
+ }
+ udelay(10);
+ }
+}
+
+
+
+/*=======================================================================
+ *
+ * dgap_cmdw_ext - Sends a extended word command to the FEP.
+ *
+ * ch - Pointer to channel structure.
+ * cmd - Command to be sent.
+ * word - Integer containing word to be sent.
+ * ncmds - Wait until ncmds or fewer cmds are left
+ * in the cmd buffer before returning.
+ *
+ *=======================================================================*/
+static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds)
+{
+ char *vaddr = NULL;
+ struct cm_t *cm_addr = NULL;
+ uint count;
+ uint n;
+ u16 head;
+ u16 tail;
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ /*
+ * Check if board is still alive.
+ */
+ if (ch->ch_bd->state == BOARD_FAILED) {
+ DPR_CORE(("%s:%d board is failed!\n", __FILE__, __LINE__));
+ return;
+ }
+
+ /*
+ * Make sure the pointers are in range before
+ * writing to the FEP memory.
+ */
+ vaddr = ch->ch_bd->re_map_membase;
+ if (!vaddr)
+ return;
+
+ cm_addr = (struct cm_t *) (vaddr + CMDBUF);
+ head = readw(&(cm_addr->cm_head));
+
+ /*
+ * Forget it if pointers out of range.
+ */
+ if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
+ DPR_CORE(("%s:%d Pointers out of range. Failing board.\n",__FILE__, __LINE__));
+ ch->ch_bd->state = BOARD_FAILED;
+ return;
+ }
+
+ /*
+ * Put the data in the circular command buffer.
+ */
+
+ /* Write an FF to tell the FEP that we want an extended command */
+ writeb((uchar) 0xff, (char *) (vaddr + head + CMDSTART + 0));
+
+ writeb((uchar) ch->ch_portnum, (uchar *) (vaddr + head + CMDSTART + 1));
+ writew((u16) cmd, (char *) (vaddr + head + CMDSTART + 2));
+
+ /*
+ * If the second part of the command won't fit,
+ * put it at the beginning of the circular buffer.
+ */
+ if (((head + 4) >= ((CMDMAX - CMDSTART)) || (head & 03))) {
+ writew((u16) word, (char *) (vaddr + CMDSTART));
+ } else {
+ writew((u16) word, (char *) (vaddr + head + CMDSTART + 4));
+ }
+
+ head = (head + 8) & (CMDMAX - CMDSTART - 4);
+
+ writew(head, &(cm_addr->cm_head));
+
+ /*
+ * Wait if necessary before updating the head
+ * pointer to limit the number of outstanding
+ * commands to the FEP. If the time spent waiting
+ * is outlandish, declare the FEP dead.
+ */
+ for (count = dgap_count ;;) {
+
+ head = readw(&(cm_addr->cm_head));
+ tail = readw(&(cm_addr->cm_tail));
+
+ n = (head - tail) & (CMDMAX - CMDSTART - 4);
+
+ if (n <= ncmds * sizeof(struct cm_t))
+ break;
+
+ if (--count == 0) {
+ DPR_CORE(("%s:%d Failing board.\n",__FILE__, __LINE__));
+ ch->ch_bd->state = BOARD_FAILED;
+ return;
+ }
+ udelay(10);
+ }
+}
+
+
+/*=======================================================================
+ *
+ * dgap_wmove - Write data to FEP buffer.
+ *
+ * ch - Pointer to channel structure.
+ * buf - Poiter to characters to be moved.
+ * cnt - Number of characters to move.
+ *
+ *=======================================================================*/
+static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt)
+{
+ int n;
+ char *taddr;
+ struct bs_t *bs;
+ u16 head;
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ /*
+ * Check parameters.
+ */
+ bs = ch->ch_bs;
+ head = readw(&(bs->tx_head));
+
+ /*
+ * If pointers are out of range, just return.
+ */
+ if ((cnt > ch->ch_tsize) || (unsigned)(head - ch->ch_tstart) >= ch->ch_tsize) {
+ DPR_CORE(("%s:%d pointer out of range", __FILE__, __LINE__));
+ return;
+ }
+
+ /*
+ * If the write wraps over the top of the circular buffer,
+ * move the portion up to the wrap point, and reset the
+ * pointers to the bottom.
+ */
+ n = ch->ch_tstart + ch->ch_tsize - head;
+
+ if (cnt >= n) {
+ cnt -= n;
+ taddr = ch->ch_taddr + head;
+ memcpy_toio(taddr, buf, n);
+ head = ch->ch_tstart;
+ buf += n;
+ }
+
+ /*
+ * Move rest of data.
+ */
+ taddr = ch->ch_taddr + head;
+ n = cnt;
+ memcpy_toio(taddr, buf, n);
+ head += cnt;
+
+ writew(head, &(bs->tx_head));
+}
+
+/*
+ * Retrives the current custom baud rate from FEP memory,
+ * and returns it back to the user.
+ * Returns 0 on error.
+ */
+static uint dgap_get_custom_baud(struct channel_t *ch)
+{
+ uchar *vaddr;
+ ulong offset = 0;
+ uint value = 0;
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) {
+ return 0;
+ }
+
+ if (!ch->ch_bd || ch->ch_bd->magic != DGAP_BOARD_MAGIC) {
+ return 0;
+ }
+
+ if (!(ch->ch_bd->bd_flags & BD_FEP5PLUS))
+ return 0;
+
+ vaddr = ch->ch_bd->re_map_membase;
+
+ if (!vaddr)
+ return 0;
+
+ /*
+ * Go get from fep mem, what the fep
+ * believes the custom baud rate is.
+ */
+ offset = ((((*(unsigned short *)(vaddr + ECS_SEG)) << 4) +
+ (ch->ch_portnum * 0x28) + LINE_SPEED));
+
+ value = readw(vaddr + offset);
+ return value;
+}
+
+
+/*
+ * Calls the firmware to reset this channel.
+ */
+static void dgap_firmware_reset_port(struct channel_t *ch)
+{
+ dgap_cmdb(ch, CHRESET, 0, 0, 0);
+
+ /*
+ * Now that the channel is reset, we need to make sure
+ * all the current settings get reapplied to the port
+ * in the firmware.
+ *
+ * So we will set the driver's cache of firmware
+ * settings all to 0, and then call param.
+ */
+ ch->ch_fepiflag = 0;
+ ch->ch_fepcflag = 0;
+ ch->ch_fepoflag = 0;
+ ch->ch_fepstartc = 0;
+ ch->ch_fepstopc = 0;
+ ch->ch_fepastartc = 0;
+ ch->ch_fepastopc = 0;
+ ch->ch_mostat = 0;
+ ch->ch_hflow = 0;
+}
+
+
+/*=======================================================================
+ *
+ * dgap_param - Set Digi parameters.
+ *
+ * struct tty_struct * - TTY for port.
+ *
+ *=======================================================================*/
+static int dgap_param(struct tty_struct *tty)
+{
+ struct ktermios *ts;
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct bs_t *bs;
+ struct un_t *un;
+ u16 head;
+ u16 cflag;
+ u16 iflag;
+ uchar mval;
+ uchar hflow;
+
+ if (!tty || tty->magic != TTY_MAGIC)
+ return -ENXIO;
+
+ un = (struct un_t *) tty->driver_data;
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return -ENXIO;
+
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return -ENXIO;
+
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return -ENXIO;
+
+ bs = ch->ch_bs;
+ if (!bs)
+ return -ENXIO;
+
+ DPR_PARAM(("param start: tdev: %x cflags: %x oflags: %x iflags: %x\n",
+ ch->ch_tun.un_dev, ch->ch_c_cflag, ch->ch_c_oflag, ch->ch_c_iflag));
+
+ ts = &tty->termios;
+
+ /*
+ * If baud rate is zero, flush queues, and set mval to drop DTR.
+ */
+ if ((ch->ch_c_cflag & (CBAUD)) == 0) {
+
+ /* flush rx */
+ head = readw(&(ch->ch_bs->rx_head));
+ writew(head, &(ch->ch_bs->rx_tail));
+
+ /* flush tx */
+ head = readw(&(ch->ch_bs->tx_head));
+ writew(head, &(ch->ch_bs->tx_tail));
+
+ ch->ch_flags |= (CH_BAUD0);
+
+ /* Drop RTS and DTR */
+ ch->ch_mval &= ~(D_RTS(ch)|D_DTR(ch));
+ mval = D_DTR(ch) | D_RTS(ch);
+ ch->ch_baud_info = 0;
+
+ } else if (ch->ch_custom_speed && (bd->bd_flags & BD_FEP5PLUS)) {
+ /*
+ * Tell the fep to do the command
+ */
+
+ DPR_PARAM(("param: Want %d speed\n", ch->ch_custom_speed));
+
+ dgap_cmdw_ext(ch, 0xff01, ch->ch_custom_speed, 0);
+
+ /*
+ * Now go get from fep mem, what the fep
+ * believes the custom baud rate is.
+ */
+ ch->ch_baud_info = ch->ch_custom_speed = dgap_get_custom_baud(ch);
+
+ DPR_PARAM(("param: Got %d speed\n", ch->ch_custom_speed));
+
+ /* Handle transition from B0 */
+ if (ch->ch_flags & CH_BAUD0) {
+ ch->ch_flags &= ~(CH_BAUD0);
+ ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
+ }
+ mval = D_DTR(ch) | D_RTS(ch);
+
+ } else {
+ /*
+ * Set baud rate, character size, and parity.
+ */
+
+
+ int iindex = 0;
+ int jindex = 0;
+ int baud = 0;
+
+ ulong bauds[4][16] = {
+ { /* slowbaud */
+ 0, 50, 75, 110,
+ 134, 150, 200, 300,
+ 600, 1200, 1800, 2400,
+ 4800, 9600, 19200, 38400 },
+ { /* slowbaud & CBAUDEX */
+ 0, 57600, 115200, 230400,
+ 460800, 150, 200, 921600,
+ 600, 1200, 1800, 2400,
+ 4800, 9600, 19200, 38400 },
+ { /* fastbaud */
+ 0, 57600, 76800, 115200,
+ 14400, 57600, 230400, 76800,
+ 115200, 230400, 28800, 460800,
+ 921600, 9600, 19200, 38400 },
+ { /* fastbaud & CBAUDEX */
+ 0, 57600, 115200, 230400,
+ 460800, 150, 200, 921600,
+ 600, 1200, 1800, 2400,
+ 4800, 9600, 19200, 38400 }
+ };
+
+ /* Only use the TXPrint baud rate if the terminal unit is NOT open */
+ if (!(ch->ch_tun.un_flags & UN_ISOPEN) && (un->un_type == DGAP_PRINT))
+ baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
+ else
+ baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
+
+ if (ch->ch_c_cflag & CBAUDEX)
+ iindex = 1;
+
+ if (ch->ch_digi.digi_flags & DIGI_FAST)
+ iindex += 2;
+
+ jindex = baud;
+
+ if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16)) {
+ baud = bauds[iindex][jindex];
+ } else {
+ DPR_IOCTL(("baud indices were out of range (%d)(%d)",
+ iindex, jindex));
+ baud = 0;
+ }
+
+ if (baud == 0)
+ baud = 9600;
+
+ ch->ch_baud_info = baud;
+
+
+ /*
+ * CBAUD has bit position 0x1000 set these days to indicate Linux
+ * baud rate remap.
+ * We use a different bit assignment for high speed. Clear this
+ * bit out while grabbing the parts of "cflag" we want.
+ */
+ cflag = ch->ch_c_cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE);
+
+ /*
+ * HUPCL bit is used by FEP to indicate fast baud
+ * table is to be used.
+ */
+ if ((ch->ch_digi.digi_flags & DIGI_FAST) || (ch->ch_c_cflag & CBAUDEX))
+ cflag |= HUPCL;
+
+
+ if ((ch->ch_c_cflag & CBAUDEX) && !(ch->ch_digi.digi_flags & DIGI_FAST)) {
+ /*
+ * The below code is trying to guarantee that only baud rates
+ * 115200, 230400, 460800, 921600 are remapped. We use exclusive or
+ * because the various baud rates share common bit positions
+ * and therefore can't be tested for easily.
+ */
+ tcflag_t tcflag = (ch->ch_c_cflag & CBAUD) | CBAUDEX;
+ int baudpart = 0;
+
+ /* Map high speed requests to index into FEP's baud table */
+ switch (tcflag) {
+ case B57600 :
+ baudpart = 1;
+ break;
+#ifdef B76800
+ case B76800 :
+ baudpart = 2;
+ break;
+#endif
+ case B115200 :
+ baudpart = 3;
+ break;
+ case B230400 :
+ baudpart = 9;
+ break;
+ case B460800 :
+ baudpart = 11;
+ break;
+#ifdef B921600
+ case B921600 :
+ baudpart = 12;
+ break;
+#endif
+ default:
+ baudpart = 0;
+ }
+
+ if (baudpart)
+ cflag = (cflag & ~(CBAUD | CBAUDEX)) | baudpart;
+ }
+
+ cflag &= 0xffff;
+
+ if (cflag != ch->ch_fepcflag) {
+ ch->ch_fepcflag = (u16) (cflag & 0xffff);
+
+ /* Okay to have channel and board locks held calling this */
+ dgap_cmdw(ch, SCFLAG, (u16) cflag, 0);
+ }
+
+ /* Handle transition from B0 */
+ if (ch->ch_flags & CH_BAUD0) {
+ ch->ch_flags &= ~(CH_BAUD0);
+ ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
+ }
+ mval = D_DTR(ch) | D_RTS(ch);
+ }
+
+ /*
+ * Get input flags.
+ */
+ iflag = ch->ch_c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP | IXON | IXANY | IXOFF);
+
+ if ((ch->ch_startc == _POSIX_VDISABLE) || (ch->ch_stopc == _POSIX_VDISABLE)) {
+ iflag &= ~(IXON | IXOFF);
+ ch->ch_c_iflag &= ~(IXON | IXOFF);
+ }
+
+ /*
+ * Only the IBM Xr card can switch between
+ * 232 and 422 modes on the fly
+ */
+ if (bd->device == PCI_DEVICE_XR_IBM_DID) {
+ if (ch->ch_digi.digi_flags & DIGI_422)
+ dgap_cmdb(ch, SCOMMODE, MODE_422, 0, 0);
+ else
+ dgap_cmdb(ch, SCOMMODE, MODE_232, 0, 0);
+ }
+
+ if (ch->ch_digi.digi_flags & DIGI_ALTPIN)
+ iflag |= IALTPIN ;
+
+ if (iflag != ch->ch_fepiflag) {
+ ch->ch_fepiflag = iflag;
+
+ /* Okay to have channel and board locks held calling this */
+ dgap_cmdw(ch, SIFLAG, (u16) ch->ch_fepiflag, 0);
+ }
+
+ /*
+ * Select hardware handshaking.
+ */
+ hflow = 0;
+
+ if (ch->ch_c_cflag & CRTSCTS) {
+ hflow |= (D_RTS(ch) | D_CTS(ch));
+ }
+ if (ch->ch_digi.digi_flags & RTSPACE)
+ hflow |= D_RTS(ch);
+ if (ch->ch_digi.digi_flags & DTRPACE)
+ hflow |= D_DTR(ch);
+ if (ch->ch_digi.digi_flags & CTSPACE)
+ hflow |= D_CTS(ch);
+ if (ch->ch_digi.digi_flags & DSRPACE)
+ hflow |= D_DSR(ch);
+ if (ch->ch_digi.digi_flags & DCDPACE)
+ hflow |= D_CD(ch);
+
+ if (hflow != ch->ch_hflow) {
+ ch->ch_hflow = hflow;
+
+ /* Okay to have channel and board locks held calling this */
+ dgap_cmdb(ch, SHFLOW, (uchar) hflow, 0xff, 0);
+ }
+
+
+ /*
+ * Set RTS and/or DTR Toggle if needed, but only if product is FEP5+ based.
+ */
+ if (bd->bd_flags & BD_FEP5PLUS) {
+ u16 hflow2 = 0;
+ if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) {
+ hflow2 |= (D_RTS(ch));
+ }
+ if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) {
+ hflow2 |= (D_DTR(ch));
+ }
+
+ dgap_cmdw_ext(ch, 0xff03, hflow2, 0);
+ }
+
+ /*
+ * Set modem control lines.
+ */
+
+ mval ^= ch->ch_mforce & (mval ^ ch->ch_mval);
+
+ DPR_PARAM(("dgap_param: mval: %x ch_mforce: %x ch_mval: %x ch_mostat: %x\n",
+ mval, ch->ch_mforce, ch->ch_mval, ch->ch_mostat));
+
+ if (ch->ch_mostat ^ mval) {
+ ch->ch_mostat = mval;
+
+ /* Okay to have channel and board locks held calling this */
+ DPR_PARAM(("dgap_param: Sending SMODEM mval: %x\n", mval));
+ dgap_cmdb(ch, SMODEM, (uchar) mval, D_RTS(ch)|D_DTR(ch), 0);
+ }
+
+ /*
+ * Read modem signals, and then call carrier function.
+ */
+ ch->ch_mistat = readb(&(bs->m_stat));
+ dgap_carrier(ch);
+
+ /*
+ * Set the start and stop characters.
+ */
+ if (ch->ch_startc != ch->ch_fepstartc || ch->ch_stopc != ch->ch_fepstopc) {
+ ch->ch_fepstartc = ch->ch_startc;
+ ch->ch_fepstopc = ch->ch_stopc;
+
+ /* Okay to have channel and board locks held calling this */
+ dgap_cmdb(ch, SFLOWC, ch->ch_fepstartc, ch->ch_fepstopc, 0);
+ }
+
+ /*
+ * Set the Auxiliary start and stop characters.
+ */
+ if (ch->ch_astartc != ch->ch_fepastartc || ch->ch_astopc != ch->ch_fepastopc) {
+ ch->ch_fepastartc = ch->ch_astartc;
+ ch->ch_fepastopc = ch->ch_astopc;
+
+ /* Okay to have channel and board locks held calling this */
+ dgap_cmdb(ch, SAFLOWC, ch->ch_fepastartc, ch->ch_fepastopc, 0);
+ }
+
+ DPR_PARAM(("param finish\n"));
+
+ return 0;
+}
+
+
+/*
+ * dgap_parity_scan()
+ *
+ * Convert the FEP5 way of reporting parity errors and breaks into
+ * the Linux line discipline way.
+ */
+static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf, unsigned char *fbuf, int *len)
+{
+ int l = *len;
+ int count = 0;
+ unsigned char *in, *cout, *fout;
+ unsigned char c;
+
+ in = cbuf;
+ cout = cbuf;
+ fout = fbuf;
+
+ DPR_PSCAN(("dgap_parity_scan start\n"));
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return;
+
+ while (l--) {
+ c = *in++;
+ switch (ch->pscan_state) {
+ default:
+ /* reset to sanity and fall through */
+ ch->pscan_state = 0;
+
+ case 0:
+ /* No FF seen yet */
+ if (c == (unsigned char) '\377') {
+ /* delete this character from stream */
+ ch->pscan_state = 1;
+ } else {
+ *cout++ = c;
+ *fout++ = TTY_NORMAL;
+ count += 1;
+ }
+ break;
+
+ case 1:
+ /* first FF seen */
+ if (c == (unsigned char) '\377') {
+ /* doubled ff, transform to single ff */
+ *cout++ = c;
+ *fout++ = TTY_NORMAL;
+ count += 1;
+ ch->pscan_state = 0;
+ } else {
+ /* save value examination in next state */
+ ch->pscan_savechar = c;
+ ch->pscan_state = 2;
+ }
+ break;
+
+ case 2:
+ /* third character of ff sequence */
+
+ *cout++ = c;
+
+ if (ch->pscan_savechar == 0x0) {
+
+ if (c == 0x0) {
+ DPR_PSCAN(("dgap_parity_scan in 3rd char of ff seq. c: %x setting break.\n", c));
+ ch->ch_err_break++;
+ *fout++ = TTY_BREAK;
+ }
+ else {
+ DPR_PSCAN(("dgap_parity_scan in 3rd char of ff seq. c: %x setting parity.\n", c));
+ ch->ch_err_parity++;
+ *fout++ = TTY_PARITY;
+ }
+ }
+ else {
+ DPR_PSCAN(("%s:%d Logic Error.\n", __FILE__, __LINE__));
+ }
+
+ count += 1;
+ ch->pscan_state = 0;
+ }
+ }
+ *len = count;
+ DPR_PSCAN(("dgap_parity_scan finish\n"));
+}
+
+
+
+
+/*=======================================================================
+ *
+ * dgap_event - FEP to host event processing routine.
+ *
+ * bd - Board of current event.
+ *
+ *=======================================================================*/
+static int dgap_event(struct board_t *bd)
+{
+ struct channel_t *ch;
+ ulong lock_flags;
+ ulong lock_flags2;
+ struct bs_t *bs;
+ uchar *event;
+ uchar *vaddr = NULL;
+ struct ev_t *eaddr = NULL;
+ uint head;
+ uint tail;
+ int port;
+ int reason;
+ int modem;
+ int b1;
+
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return -ENXIO;
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+
+ vaddr = bd->re_map_membase;
+
+ if (!vaddr) {
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return -ENXIO;
+ }
+
+ eaddr = (struct ev_t *) (vaddr + EVBUF);
+
+ /* Get our head and tail */
+ head = readw(&(eaddr->ev_head));
+ tail = readw(&(eaddr->ev_tail));
+
+ /*
+ * Forget it if pointers out of range.
+ */
+
+ if (head >= EVMAX - EVSTART || tail >= EVMAX - EVSTART ||
+ (head | tail) & 03) {
+ DPR_EVENT(("should be calling xxfail %d\n", __LINE__));
+ /* Let go of board lock */
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ return -ENXIO;
+ }
+
+ /*
+ * Loop to process all the events in the buffer.
+ */
+ while (tail != head) {
+
+ /*
+ * Get interrupt information.
+ */
+
+ event = bd->re_map_membase + tail + EVSTART;
+
+ port = event[0];
+ reason = event[1];
+ modem = event[2];
+ b1 = event[3];
+
+ DPR_EVENT(("event: jiffies: %ld port: %d reason: %x modem: %x\n",
+ jiffies, port, reason, modem));
+
+ /*
+ * Make sure the interrupt is valid.
+ */
+ if (port >= bd->nasync)
+ goto next;
+
+ if (!(reason & (IFMODEM | IFBREAK | IFTLW | IFTEM | IFDATA))) {
+ goto next;
+ }
+
+ ch = bd->channels[port];
+
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) {
+ goto next;
+ }
+
+ /*
+ * If we have made it here, the event was valid.
+ * Lock down the channel.
+ */
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ bs = ch->ch_bs;
+
+ if (!bs) {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ goto next;
+ }
+
+ /*
+ * Process received data.
+ */
+ if (reason & IFDATA) {
+
+ /*
+ * ALL LOCKS *MUST* BE DROPPED BEFORE CALLING INPUT!
+ * input could send some data to ld, which in turn
+ * could do a callback to one of our other functions.
+ */
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ dgap_input(ch);
+
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+ if (ch->ch_flags & CH_RACTIVE)
+ ch->ch_flags |= CH_RENABLE;
+ else
+ writeb(1, &(bs->idata));
+
+ if (ch->ch_flags & CH_RWAIT) {
+ ch->ch_flags &= ~CH_RWAIT;
+
+ wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+ }
+ }
+
+ /*
+ * Process Modem change signals.
+ */
+ if (reason & IFMODEM) {
+ ch->ch_mistat = modem;
+ dgap_carrier(ch);
+ }
+
+ /*
+ * Process break.
+ */
+ if (reason & IFBREAK) {
+
+ DPR_EVENT(("got IFBREAK\n"));
+
+ if (ch->ch_tun.un_tty) {
+ /* A break has been indicated */
+ ch->ch_err_break++;
+ tty_buffer_request_room(ch->ch_tun.un_tty->port, 1);
+ tty_insert_flip_char(ch->ch_tun.un_tty->port, 0, TTY_BREAK);
+ tty_flip_buffer_push(ch->ch_tun.un_tty->port);
+ }
+ }
+
+ /*
+ * Process Transmit low.
+ */
+ if (reason & IFTLW) {
+
+ DPR_EVENT(("event: got low event\n"));
+
+ if (ch->ch_tun.un_flags & UN_LOW) {
+ ch->ch_tun.un_flags &= ~UN_LOW;
+
+ if (ch->ch_tun.un_flags & UN_ISOPEN) {
+ if ((ch->ch_tun.un_tty->flags &
+ (1 << TTY_DO_WRITE_WAKEUP)) &&
+ ch->ch_tun.un_tty->ldisc->ops->write_wakeup)
+ {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ (ch->ch_tun.un_tty->ldisc->ops->write_wakeup)(ch->ch_tun.un_tty);
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+ }
+ wake_up_interruptible(&ch->ch_tun.un_tty->write_wait);
+ wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+
+ DPR_EVENT(("event: Got low event. jiffies: %lu\n", jiffies));
+ }
+ }
+
+ if (ch->ch_pun.un_flags & UN_LOW) {
+ ch->ch_pun.un_flags &= ~UN_LOW;
+ if (ch->ch_pun.un_flags & UN_ISOPEN) {
+ if ((ch->ch_pun.un_tty->flags &
+ (1 << TTY_DO_WRITE_WAKEUP)) &&
+ ch->ch_pun.un_tty->ldisc->ops->write_wakeup)
+ {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ (ch->ch_pun.un_tty->ldisc->ops->write_wakeup)(ch->ch_pun.un_tty);
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+ }
+ wake_up_interruptible(&ch->ch_pun.un_tty->write_wait);
+ wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+ }
+ }
+
+ if (ch->ch_flags & CH_WLOW) {
+ ch->ch_flags &= ~CH_WLOW;
+ wake_up_interruptible(&ch->ch_flags_wait);
+ }
+ }
+
+ /*
+ * Process Transmit empty.
+ */
+ if (reason & IFTEM) {
+ DPR_EVENT(("event: got empty event\n"));
+
+ if (ch->ch_tun.un_flags & UN_EMPTY) {
+ ch->ch_tun.un_flags &= ~UN_EMPTY;
+ if (ch->ch_tun.un_flags & UN_ISOPEN) {
+ if ((ch->ch_tun.un_tty->flags &
+ (1 << TTY_DO_WRITE_WAKEUP)) &&
+ ch->ch_tun.un_tty->ldisc->ops->write_wakeup)
+ {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ (ch->ch_tun.un_tty->ldisc->ops->write_wakeup)(ch->ch_tun.un_tty);
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+ }
+ wake_up_interruptible(&ch->ch_tun.un_tty->write_wait);
+ wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+ }
+ }
+
+ if (ch->ch_pun.un_flags & UN_EMPTY) {
+ ch->ch_pun.un_flags &= ~UN_EMPTY;
+ if (ch->ch_pun.un_flags & UN_ISOPEN) {
+ if ((ch->ch_pun.un_tty->flags &
+ (1 << TTY_DO_WRITE_WAKEUP)) &&
+ ch->ch_pun.un_tty->ldisc->ops->write_wakeup)
+ {
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+ (ch->ch_pun.un_tty->ldisc->ops->write_wakeup)(ch->ch_pun.un_tty);
+ DGAP_LOCK(bd->bd_lock, lock_flags);
+ DGAP_LOCK(ch->ch_lock, lock_flags2);
+ }
+ wake_up_interruptible(&ch->ch_pun.un_tty->write_wait);
+ wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+ }
+ }
+
+
+ if (ch->ch_flags & CH_WEMPTY) {
+ ch->ch_flags &= ~CH_WEMPTY;
+ wake_up_interruptible(&ch->ch_flags_wait);
+ }
+ }
+
+ DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+
+next:
+ tail = (tail + 4) & (EVMAX - EVSTART - 4);
+ }
+
+ writew(tail, &(eaddr->ev_tail));
+ DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+ return 0;
+}
+
+static ssize_t dgap_driver_version_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
+}
+static DRIVER_ATTR(version, S_IRUSR, dgap_driver_version_show, NULL);
+
+
+static ssize_t dgap_driver_boards_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", dgap_NumBoards);
+}
+static DRIVER_ATTR(boards, S_IRUSR, dgap_driver_boards_show, NULL);
+
+
+static ssize_t dgap_driver_maxboards_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
+}
+static DRIVER_ATTR(maxboards, S_IRUSR, dgap_driver_maxboards_show, NULL);
+
+
+static ssize_t dgap_driver_pollcounter_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%ld\n", dgap_poll_counter);
+}
+static DRIVER_ATTR(pollcounter, S_IRUSR, dgap_driver_pollcounter_show, NULL);
+
+
+static ssize_t dgap_driver_state_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%s\n", dgap_driver_state_text[dgap_driver_state]);
+}
+static DRIVER_ATTR(state, S_IRUSR, dgap_driver_state_show, NULL);
+
+
+static ssize_t dgap_driver_debug_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%x\n", dgap_debug);
+}
+
+static ssize_t dgap_driver_debug_store(struct device_driver *ddp, const char *buf, size_t count)
+{
+ sscanf(buf, "0x%x\n", &dgap_debug);
+ return count;
+}
+static DRIVER_ATTR(debug, (S_IRUSR | S_IWUSR), dgap_driver_debug_show, dgap_driver_debug_store);
+
+
+static ssize_t dgap_driver_rawreadok_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%x\n", dgap_rawreadok);
+}
+
+static ssize_t dgap_driver_rawreadok_store(struct device_driver *ddp, const char *buf, size_t count)
+{
+ sscanf(buf, "0x%x\n", &dgap_rawreadok);
+ return count;
+}
+static DRIVER_ATTR(rawreadok, (S_IRUSR | S_IWUSR), dgap_driver_rawreadok_show, dgap_driver_rawreadok_store);
+
+
+static ssize_t dgap_driver_pollrate_show(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%dms\n", dgap_poll_tick);
+}
+
+static ssize_t dgap_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count)
+{
+ sscanf(buf, "%d\n", &dgap_poll_tick);
+ return count;
+}
+static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgap_driver_pollrate_show, dgap_driver_pollrate_store);
+
+
+static void dgap_create_driver_sysfiles(struct pci_driver *dgap_driver)
+{
+ int rc = 0;
+ struct device_driver *driverfs = &dgap_driver->driver;
+
+ rc |= driver_create_file(driverfs, &driver_attr_version);
+ rc |= driver_create_file(driverfs, &driver_attr_boards);
+ rc |= driver_create_file(driverfs, &driver_attr_maxboards);
+ rc |= driver_create_file(driverfs, &driver_attr_debug);
+ rc |= driver_create_file(driverfs, &driver_attr_rawreadok);
+ rc |= driver_create_file(driverfs, &driver_attr_pollrate);
+ rc |= driver_create_file(driverfs, &driver_attr_pollcounter);
+ rc |= driver_create_file(driverfs, &driver_attr_state);
+ if (rc) {
+ printk(KERN_ERR "DGAP: sysfs driver_create_file failed!\n");
+ }
+}
+
+
+static void dgap_remove_driver_sysfiles(struct pci_driver *dgap_driver)
+{
+ struct device_driver *driverfs = &dgap_driver->driver;
+ driver_remove_file(driverfs, &driver_attr_version);
+ driver_remove_file(driverfs, &driver_attr_boards);
+ driver_remove_file(driverfs, &driver_attr_maxboards);
+ driver_remove_file(driverfs, &driver_attr_debug);
+ driver_remove_file(driverfs, &driver_attr_rawreadok);
+ driver_remove_file(driverfs, &driver_attr_pollrate);
+ driver_remove_file(driverfs, &driver_attr_pollcounter);
+ driver_remove_file(driverfs, &driver_attr_state);
+}
+
+
+#define DGAP_VERIFY_BOARD(p, bd) \
+ if (!p) \
+ return (0); \
+ \
+ bd = dev_get_drvdata(p); \
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC) \
+ return (0); \
+ if (bd->state != BOARD_READY) \
+ return (0); \
+
+
+static ssize_t dgap_ports_state_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d %s\n", bd->channels[i]->ch_portnum,
+ bd->channels[i]->ch_open_count ? "Open" : "Closed");
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_state, S_IRUSR, dgap_ports_state_show, NULL);
+
+
+static ssize_t dgap_ports_baud_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d %d\n", bd->channels[i]->ch_portnum, bd->channels[i]->ch_baud_info);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_baud, S_IRUSR, dgap_ports_baud_show, NULL);
+
+
+static ssize_t dgap_ports_msignals_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ if (bd->channels[i]->ch_open_count) {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d %s %s %s %s %s %s\n", bd->channels[i]->ch_portnum,
+ (bd->channels[i]->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
+ (bd->channels[i]->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
+ (bd->channels[i]->ch_mistat & UART_MSR_RI) ? "RI" : "");
+ } else {
+ count += snprintf(buf + count, PAGE_SIZE - count,
+ "%d\n", bd->channels[i]->ch_portnum);
+ }
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_msignals, S_IRUSR, dgap_ports_msignals_show, NULL);
+
+
+static ssize_t dgap_ports_iflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_iflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_iflag, S_IRUSR, dgap_ports_iflag_show, NULL);
+
+
+static ssize_t dgap_ports_cflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_cflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_cflag, S_IRUSR, dgap_ports_cflag_show, NULL);
+
+
+static ssize_t dgap_ports_oflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_oflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_oflag, S_IRUSR, dgap_ports_oflag_show, NULL);
+
+
+static ssize_t dgap_ports_lflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_lflag);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_lflag, S_IRUSR, dgap_ports_lflag_show, NULL);
+
+
+static ssize_t dgap_ports_digi_flag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_digi.digi_flags);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgap_ports_digi_flag_show, NULL);
+
+
+static ssize_t dgap_ports_rxcount_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_rxcount);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgap_ports_rxcount_show, NULL);
+
+
+static ssize_t dgap_ports_txcount_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ int count = 0;
+ int i = 0;
+
+ DGAP_VERIFY_BOARD(p, bd);
+
+ for (i = 0; i < bd->nasync; i++) {
+ count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
+ bd->channels[i]->ch_portnum, bd->channels[i]->ch_txcount);
+ }
+ return count;
+}
+static DEVICE_ATTR(ports_txcount, S_IRUSR, dgap_ports_txcount_show, NULL);
+
+
+/* this function creates the sys files that will export each signal status
+ * to sysfs each value will be put in a separate filename
+ */
+static void dgap_create_ports_sysfiles(struct board_t *bd)
+{
+ int rc = 0;
+
+ dev_set_drvdata(&bd->pdev->dev, bd);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
+ rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
+ if (rc) {
+ printk(KERN_ERR "DGAP: sysfs device_create_file failed!\n");
+ }
+}
+
+
+/* removes all the sys files created for that port */
+static void dgap_remove_ports_sysfiles(struct board_t *bd)
+{
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
+ device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
+}
+
+
+static ssize_t dgap_tty_state_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? "Open" : "Closed");
+}
+static DEVICE_ATTR(state, S_IRUSR, dgap_tty_state_show, NULL);
+
+
+static ssize_t dgap_tty_baud_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_baud_info);
+}
+static DEVICE_ATTR(baud, S_IRUSR, dgap_tty_baud_show, NULL);
+
+
+static ssize_t dgap_tty_msignals_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ if (ch->ch_open_count) {
+ return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
+ (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
+ (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
+ (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
+ (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
+ (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
+ (ch->ch_mistat & UART_MSR_RI) ? "RI" : "");
+ }
+ return 0;
+}
+static DEVICE_ATTR(msignals, S_IRUSR, dgap_tty_msignals_show, NULL);
+
+
+static ssize_t dgap_tty_iflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
+}
+static DEVICE_ATTR(iflag, S_IRUSR, dgap_tty_iflag_show, NULL);
+
+
+static ssize_t dgap_tty_cflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
+}
+static DEVICE_ATTR(cflag, S_IRUSR, dgap_tty_cflag_show, NULL);
+
+
+static ssize_t dgap_tty_oflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
+}
+static DEVICE_ATTR(oflag, S_IRUSR, dgap_tty_oflag_show, NULL);
+
+
+static ssize_t dgap_tty_lflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
+}
+static DEVICE_ATTR(lflag, S_IRUSR, dgap_tty_lflag_show, NULL);
+
+
+static ssize_t dgap_tty_digi_flag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
+}
+static DEVICE_ATTR(digi_flag, S_IRUSR, dgap_tty_digi_flag_show, NULL);
+
+
+static ssize_t dgap_tty_rxcount_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
+}
+static DEVICE_ATTR(rxcount, S_IRUSR, dgap_tty_rxcount_show, NULL);
+
+
+static ssize_t dgap_tty_txcount_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
+}
+static DEVICE_ATTR(txcount, S_IRUSR, dgap_tty_txcount_show, NULL);
+
+
+static ssize_t dgap_tty_name_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+ struct board_t *bd;
+ struct channel_t *ch;
+ struct un_t *un;
+ int cn;
+ int bn;
+ struct cnode *cptr = NULL;
+ int found = FALSE;
+ int ncount = 0;
+ int starto = 0;
+ int i = 0;
+
+ if (!d)
+ return (0);
+ un = dev_get_drvdata(d);
+ if (!un || un->magic != DGAP_UNIT_MAGIC)
+ return (0);
+ ch = un->un_ch;
+ if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+ return (0);
+ bd = ch->ch_bd;
+ if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+ return (0);
+ if (bd->state != BOARD_READY)
+ return (0);
+
+ bn = bd->boardnum;
+ cn = ch->ch_portnum;
+
+ for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
+
+ if ((cptr->type == BNODE) &&
+ ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
+ (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
+ (cptr->u.board.type == PAPORT8))) {
+
+ found = TRUE;
+ if (cptr->u.board.v_start)
+ starto = cptr->u.board.start;
+ else
+ starto = 1;
+ }
+
+ if (cptr->type == TNODE && found == TRUE) {
+ char *ptr1;
+ if (strstr(cptr->u.ttyname, "tty")) {
+ ptr1 = cptr->u.ttyname;
+ ptr1 += 3;
+ }
+ else {
+ ptr1 = cptr->u.ttyname;
+ }
+
+ for (i = 0; i < dgap_config_get_number_of_ports(bd); i++) {
+ if (cn == i) {
+ return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
+ (un->un_type == DGAP_PRINT) ? "pr" : "tty",
+ ptr1, i + starto);
+ }
+ }
+ }
+
+ if (cptr->type == CNODE) {
+
+ for (i = 0; i < cptr->u.conc.nport; i++) {
+ if (cn == (i + ncount)) {
+
+ return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
+ (un->un_type == DGAP_PRINT) ? "pr" : "tty",
+ cptr->u.conc.id,
+ i + (cptr->u.conc.v_start ? cptr->u.conc.start : 1));
+ }
+ }
+
+ ncount += cptr->u.conc.nport;
+ }
+
+ if (cptr->type == MNODE) {
+
+ for (i = 0; i < cptr->u.module.nport; i++) {
+ if (cn == (i + ncount)) {
+ return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
+ (un->un_type == DGAP_PRINT) ? "pr" : "tty",
+ cptr->u.module.id,
+ i + (cptr->u.module.v_start ? cptr->u.module.start : 1));
+ }
+ }
+
+ ncount += cptr->u.module.nport;
+
+ }
+ }
+
+ return snprintf(buf, PAGE_SIZE, "%s_dgap_%d_%d\n",
+ (un->un_type == DGAP_PRINT) ? "pr" : "tty", bn, cn);
+
+}
+static DEVICE_ATTR(custom_name, S_IRUSR, dgap_tty_name_show, NULL);
+
+
+static struct attribute *dgap_sysfs_tty_entries[] = {
+ &dev_attr_state.attr,
+ &dev_attr_baud.attr,
+ &dev_attr_msignals.attr,
+ &dev_attr_iflag.attr,
+ &dev_attr_cflag.attr,
+ &dev_attr_oflag.attr,
+ &dev_attr_lflag.attr,
+ &dev_attr_digi_flag.attr,
+ &dev_attr_rxcount.attr,
+ &dev_attr_txcount.attr,
+ &dev_attr_custom_name.attr,
+ NULL
+};
+
+
+static struct attribute_group dgap_tty_attribute_group = {
+ .name = NULL,
+ .attrs = dgap_sysfs_tty_entries,
+};
+
+
+
+
+static void dgap_create_tty_sysfs(struct un_t *un, struct device *c)
+{
+ int ret;
+
+ ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group);
+ if (ret) {
+ printk(KERN_ERR "dgap: failed to create sysfs tty device attributes.\n");
+ sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
+ return;
+ }
+
+ dev_set_drvdata(c, un);
+
+}
+
+
+static void dgap_remove_tty_sysfs(struct device *c)
+{
+ sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
+}
+
+/*
+ * Parse a configuration file read into memory as a string.
+ */
+static int dgap_parsefile(char **in, int Remove)
+{
+ struct cnode *p, *brd, *line, *conc;
+ int rc;
+ char *s = NULL, *s2 = NULL;
+ int linecnt = 0;
+
+ p = &dgap_head;
+ brd = line = conc = NULL;
+
+ /* perhaps we are adding to an existing list? */
+ while (p->next != NULL) {
+ p = p->next;
+ }
+
+ /* file must start with a BEGIN */
+ while ( (rc = dgap_gettok(in,p)) != BEGIN ) {
+ if (rc == 0) {
+ dgap_err("unexpected EOF");
+ return(-1);
+ }
+ }
+
+ for (; ; ) {
+ rc = dgap_gettok(in,p);
+ if (rc == 0) {
+ dgap_err("unexpected EOF");
+ return(-1);
+ }
+
+ switch (rc) {
+ case 0:
+ dgap_err("unexpected end of file");
+ return(-1);
+
+ case BEGIN: /* should only be 1 begin */
+ dgap_err("unexpected config_begin\n");
+ return(-1);
+
+ case END:
+ return(0);
+
+ case BOARD: /* board info */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(BNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+
+ p->u.board.status = dgap_savestring("No");
+ line = conc = NULL;
+ brd = p;
+ linecnt = -1;
+ break;
+
+ case APORT2_920P: /* AccelePort_4 */
+ if (p->type != BNODE) {
+ dgap_err("unexpected Digi_2r_920 string");
+ return(-1);
+ }
+ p->u.board.type = APORT2_920P;
+ p->u.board.v_type = 1;
+ DPR_INIT(("Adding Digi_2r_920 PCI to config...\n"));
+ break;
+
+ case APORT4_920P: /* AccelePort_4 */
+ if (p->type != BNODE) {
+ dgap_err("unexpected Digi_4r_920 string");
+ return(-1);
+ }
+ p->u.board.type = APORT4_920P;
+ p->u.board.v_type = 1;
+ DPR_INIT(("Adding Digi_4r_920 PCI to config...\n"));
+ break;
+
+ case APORT8_920P: /* AccelePort_8 */
+ if (p->type != BNODE) {
+ dgap_err("unexpected Digi_8r_920 string");
+ return(-1);
+ }
+ p->u.board.type = APORT8_920P;
+ p->u.board.v_type = 1;
+ DPR_INIT(("Adding Digi_8r_920 PCI to config...\n"));
+ break;
+
+ case PAPORT4: /* AccelePort_4 PCI */
+ if (p->type != BNODE) {
+ dgap_err("unexpected Digi_4r(PCI) string");
+ return(-1);
+ }
+ p->u.board.type = PAPORT4;
+ p->u.board.v_type = 1;
+ DPR_INIT(("Adding Digi_4r PCI to config...\n"));
+ break;
+
+ case PAPORT8: /* AccelePort_8 PCI */
+ if (p->type != BNODE) {
+ dgap_err("unexpected Digi_8r string");
+ return(-1);
+ }
+ p->u.board.type = PAPORT8;
+ p->u.board.v_type = 1;
+ DPR_INIT(("Adding Digi_8r PCI to config...\n"));
+ break;
+
+ case PCX: /* PCI C/X */
+ if (p->type != BNODE) {
+ dgap_err("unexpected Digi_C/X_(PCI) string");
+ return(-1);
+ }
+ p->u.board.type = PCX;
+ p->u.board.v_type = 1;
+ p->u.board.conc1 = 0;
+ p->u.board.conc2 = 0;
+ p->u.board.module1 = 0;
+ p->u.board.module2 = 0;
+ DPR_INIT(("Adding PCI C/X to config...\n"));
+ break;
+
+ case PEPC: /* PCI EPC/X */
+ if (p->type != BNODE) {
+ dgap_err("unexpected \"Digi_EPC/X_(PCI)\" string");
+ return(-1);
+ }
+ p->u.board.type = PEPC;
+ p->u.board.v_type = 1;
+ p->u.board.conc1 = 0;
+ p->u.board.conc2 = 0;
+ p->u.board.module1 = 0;
+ p->u.board.module2 = 0;
+ DPR_INIT(("Adding PCI EPC/X to config...\n"));
+ break;
+
+ case PPCM: /* PCI/Xem */
+ if (p->type != BNODE) {
+ dgap_err("unexpected PCI/Xem string");
+ return(-1);
+ }
+ p->u.board.type = PPCM;
+ p->u.board.v_type = 1;
+ p->u.board.conc1 = 0;
+ p->u.board.conc2 = 0;
+ DPR_INIT(("Adding PCI XEM to config...\n"));
+ break;
+
+ case IO: /* i/o port */
+ if (p->type != BNODE) {
+ dgap_err("IO port only vaild for boards");
+ return(-1);
+ }
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.portstr = dgap_savestring(s);
+ p->u.board.port = (short)simple_strtol(s, &s2, 0);
+ if ((short)strlen(s) > (short)(s2 - s)) {
+ dgap_err("bad number for IO port");
+ return(-1);
+ }
+ p->u.board.v_port = 1;
+ DPR_INIT(("Adding IO (%s) to config...\n", s));
+ break;
+
+ case MEM: /* memory address */
+ if (p->type != BNODE) {
+ dgap_err("memory address only vaild for boards");
+ return(-1);
+ }
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.addrstr = dgap_savestring(s);
+ p->u.board.addr = simple_strtoul(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for memory address");
+ return(-1);
+ }
+ p->u.board.v_addr = 1;
+ DPR_INIT(("Adding MEM (%s) to config...\n", s));
+ break;
+
+ case PCIINFO: /* pci information */
+ if (p->type != BNODE) {
+ dgap_err("memory address only vaild for boards");
+ return(-1);
+ }
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.pcibusstr = dgap_savestring(s);
+ p->u.board.pcibus = simple_strtoul(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for pci bus");
+ return(-1);
+ }
+ p->u.board.v_pcibus = 1;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.pcislotstr = dgap_savestring(s);
+ p->u.board.pcislot = simple_strtoul(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for pci slot");
+ return(-1);
+ }
+ p->u.board.v_pcislot = 1;
+
+ DPR_INIT(("Adding PCIINFO (%s %s) to config...\n", p->u.board.pcibusstr,
+ p->u.board.pcislotstr));
+ break;
+
+ case METHOD:
+ if (p->type != BNODE) {
+ dgap_err("install method only vaild for boards");
+ return(-1);
+ }
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.method = dgap_savestring(s);
+ p->u.board.v_method = 1;
+ DPR_INIT(("Adding METHOD (%s) to config...\n", s));
+ break;
+
+ case STATUS:
+ if (p->type != BNODE) {
+ dgap_err("config status only vaild for boards");
+ return(-1);
+ }
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.status = dgap_savestring(s);
+ DPR_INIT(("Adding STATUS (%s) to config...\n", s));
+ break;
+
+ case NPORTS: /* number of ports */
+ if (p->type == BNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.nport = (char)simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for number of ports");
+ return(-1);
+ }
+ p->u.board.v_nport = 1;
+ } else if (p->type == CNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.conc.nport = (char)simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for number of ports");
+ return(-1);
+ }
+ p->u.conc.v_nport = 1;
+ } else if (p->type == MNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.module.nport = (char)simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for number of ports");
+ return(-1);
+ }
+ p->u.module.v_nport = 1;
+ } else {
+ dgap_err("nports only valid for concentrators or modules");
+ return(-1);
+ }
+ DPR_INIT(("Adding NPORTS (%s) to config...\n", s));
+ break;
+
+ case ID: /* letter ID used in tty name */
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+
+ p->u.board.status = dgap_savestring(s);
+
+ if (p->type == CNODE) {
+ p->u.conc.id = dgap_savestring(s);
+ p->u.conc.v_id = 1;
+ } else if (p->type == MNODE) {
+ p->u.module.id = dgap_savestring(s);
+ p->u.module.v_id = 1;
+ } else {
+ dgap_err("id only valid for concentrators or modules");
+ return(-1);
+ }
+ DPR_INIT(("Adding ID (%s) to config...\n", s));
+ break;
+
+ case STARTO: /* start offset of ID */
+ if (p->type == BNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.board.start = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for start of tty count");
+ return(-1);
+ }
+ p->u.board.v_start = 1;
+ } else if (p->type == CNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.conc.start = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for start of tty count");
+ return(-1);
+ }
+ p->u.conc.v_start = 1;
+ } else if (p->type == MNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.module.start = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for start of tty count");
+ return(-1);
+ }
+ p->u.module.v_start = 1;
+ } else {
+ dgap_err("start only valid for concentrators or modules");
+ return(-1);
+ }
+ DPR_INIT(("Adding START (%s) to config...\n", s));
+ break;
+
+ case TTYN: /* tty name prefix */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(TNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ if ( (s = dgap_getword(in)) == NULL ) {
+ dgap_err("unexpeced end of file");
+ return(-1);
+ }
+ if ( (p->u.ttyname = dgap_savestring(s)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ DPR_INIT(("Adding TTY (%s) to config...\n", s));
+ break;
+
+ case CU: /* cu name prefix */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(CUNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ if ( (s = dgap_getword(in)) == NULL ) {
+ dgap_err("unexpeced end of file");
+ return(-1);
+ }
+ if ( (p->u.cuname = dgap_savestring(s)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ DPR_INIT(("Adding CU (%s) to config...\n", s));
+ break;
+
+ case LINE: /* line information */
+ if (dgap_checknode(p))
+ return(-1);
+ if (brd == NULL) {
+ dgap_err("must specify board before line info");
+ return(-1);
+ }
+ switch (brd->u.board.type) {
+ case PPCM:
+ dgap_err("line not vaild for PC/em");
+ return(-1);
+ }
+ if ( (p->next = dgap_newnode(LNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ conc = NULL;
+ line = p;
+ linecnt++;
+ DPR_INIT(("Adding LINE to config...\n"));
+ break;
+
+ case CONC: /* concentrator information */
+ if (dgap_checknode(p))
+ return(-1);
+ if (line == NULL) {
+ dgap_err("must specify line info before concentrator");
+ return(-1);
+ }
+ if ( (p->next = dgap_newnode(CNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ conc = p;
+ if (linecnt)
+ brd->u.board.conc2++;
+ else
+ brd->u.board.conc1++;
+
+ DPR_INIT(("Adding CONC to config...\n"));
+ break;
+
+ case CX: /* c/x type concentrator */
+ if (p->type != CNODE) {
+ dgap_err("cx only valid for concentrators");
+ return(-1);
+ }
+ p->u.conc.type = CX;
+ p->u.conc.v_type = 1;
+ DPR_INIT(("Adding CX to config...\n"));
+ break;
+
+ case EPC: /* epc type concentrator */
+ if (p->type != CNODE) {
+ dgap_err("cx only valid for concentrators");
+ return(-1);
+ }
+ p->u.conc.type = EPC;
+ p->u.conc.v_type = 1;
+ DPR_INIT(("Adding EPC to config...\n"));
+ break;
+
+ case MOD: /* EBI module */
+ if (dgap_checknode(p))
+ return(-1);
+ if (brd == NULL) {
+ dgap_err("must specify board info before EBI modules");
+ return(-1);
+ }
+ switch (brd->u.board.type) {
+ case PPCM:
+ linecnt = 0;
+ break;
+ default:
+ if (conc == NULL) {
+ dgap_err("must specify concentrator info before EBI module");
+ return(-1);
+ }
+ }
+ if ( (p->next = dgap_newnode(MNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ if (linecnt)
+ brd->u.board.module2++;
+ else
+ brd->u.board.module1++;
+
+ DPR_INIT(("Adding MOD to config...\n"));
+ break;
+
+ case PORTS: /* ports type EBI module */
+ if (p->type != MNODE) {
+ dgap_err("ports only valid for EBI modules");
+ return(-1);
+ }
+ p->u.module.type = PORTS;
+ p->u.module.v_type = 1;
+ DPR_INIT(("Adding PORTS to config...\n"));
+ break;
+
+ case MODEM: /* ports type EBI module */
+ if (p->type != MNODE) {
+ dgap_err("modem only valid for modem modules");
+ return(-1);
+ }
+ p->u.module.type = MODEM;
+ p->u.module.v_type = 1;
+ DPR_INIT(("Adding MODEM to config...\n"));
+ break;
+
+ case CABLE:
+ if (p->type == LNODE) {
+ if ((s = dgap_getword(in)) == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.line.cable = dgap_savestring(s);
+ p->u.line.v_cable = 1;
+ }
+ DPR_INIT(("Adding CABLE (%s) to config...\n", s));
+ break;
+
+ case SPEED: /* sync line speed indication */
+ if (p->type == LNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.line.speed = (char)simple_strtol(s, &s2, 0);
+ if ((short)strlen(s) > (short)(s2 - s)) {
+ dgap_err("bad number for line speed");
+ return(-1);
+ }
+ p->u.line.v_speed = 1;
+ } else if (p->type == CNODE) {
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.conc.speed = (char)simple_strtol(s, &s2, 0);
+ if ((short)strlen(s) > (short)(s2 - s)) {
+ dgap_err("bad number for line speed");
+ return(-1);
+ }
+ p->u.conc.v_speed = 1;
+ } else {
+ dgap_err("speed valid only for lines or concentrators.");
+ return(-1);
+ }
+ DPR_INIT(("Adding SPEED (%s) to config...\n", s));
+ break;
+
+ case CONNECT:
+ if (p->type == CNODE) {
+ if ((s = dgap_getword(in)) == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.conc.connect = dgap_savestring(s);
+ p->u.conc.v_connect = 1;
+ }
+ DPR_INIT(("Adding CONNECT (%s) to config...\n", s));
+ break;
+ case PRINT: /* transparent print name prefix */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(PNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ if ( (s = dgap_getword(in)) == NULL ) {
+ dgap_err("unexpeced end of file");
+ return(-1);
+ }
+ if ( (p->u.printname = dgap_savestring(s)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ DPR_INIT(("Adding PRINT (%s) to config...\n", s));
+ break;
+
+ case CMAJOR: /* major number */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(JNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.majornumber = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for major number");
+ return(-1);
+ }
+ DPR_INIT(("Adding CMAJOR (%s) to config...\n", s));
+ break;
+
+ case ALTPIN: /* altpin setting */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(ANODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.altpin = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for altpin");
+ return(-1);
+ }
+ DPR_INIT(("Adding ALTPIN (%s) to config...\n", s));
+ break;
+
+ case USEINTR: /* enable interrupt setting */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(INTRNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.useintr = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for useintr");
+ return(-1);
+ }
+ DPR_INIT(("Adding USEINTR (%s) to config...\n", s));
+ break;
+
+ case TTSIZ: /* size of tty structure */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(TSNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.ttysize = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for ttysize");
+ return(-1);
+ }
+ DPR_INIT(("Adding TTSIZ (%s) to config...\n", s));
+ break;
+
+ case CHSIZ: /* channel structure size */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(CSNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.chsize = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for chsize");
+ return(-1);
+ }
+ DPR_INIT(("Adding CHSIZE (%s) to config...\n", s));
+ break;
+
+ case BSSIZ: /* board structure size */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(BSNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.bssize = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for bssize");
+ return(-1);
+ }
+ DPR_INIT(("Adding BSSIZ (%s) to config...\n", s));
+ break;
+
+ case UNTSIZ: /* sched structure size */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(USNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.unsize = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for schedsize");
+ return(-1);
+ }
+ DPR_INIT(("Adding UNTSIZ (%s) to config...\n", s));
+ break;
+
+ case F2SIZ: /* f2200 structure size */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(FSNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.f2size = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for f2200size");
+ return(-1);
+ }
+ DPR_INIT(("Adding F2SIZ (%s) to config...\n", s));
+ break;
+
+ case VPSIZ: /* vpix structure size */
+ if (dgap_checknode(p))
+ return(-1);
+ if ( (p->next = dgap_newnode(VSNODE)) == NULL ) {
+ dgap_err("out of memory");
+ return(-1);
+ }
+ p = p->next;
+ s = dgap_getword(in);
+ if (s == NULL) {
+ dgap_err("unexpected end of file");
+ return(-1);
+ }
+ p->u.vpixsize = simple_strtol(s, &s2, 0);
+ if ((int)strlen(s) > (int)(s2 - s)) {
+ dgap_err("bad number for vpixsize");
+ return(-1);
+ }
+ DPR_INIT(("Adding VPSIZ (%s) to config...\n", s));
+ break;
+ }
+ }
+}
+
+
+/*
+ * dgap_sindex: much like index(), but it looks for a match of any character in
+ * the group, and returns that position. If the first character is a ^, then
+ * this will match the first occurrence not in that group.
+ */
+static char *dgap_sindex (char *string, char *group)
+{
+ char *ptr;
+
+ if (!string || !group)
+ return (char *) NULL;
+
+ if (*group == '^') {
+ group++;
+ for (; *string; string++) {
+ for (ptr = group; *ptr; ptr++) {
+ if (*ptr == *string)
+ break;
+ }
+ if (*ptr == '\0')
+ return string;
+ }
+ }
+ else {
+ for (; *string; string++) {
+ for (ptr = group; *ptr; ptr++) {
+ if (*ptr == *string)
+ return string;
+ }
+ }
+ }
+
+ return (char *) NULL;
+}
+
+
+/*
+ * Get a token from the input file; return 0 if end of file is reached
+ */
+static int dgap_gettok(char **in, struct cnode *p)
+{
+ char *w;
+ struct toklist *t;
+
+ if (strstr(dgap_cword, "boar")) {
+ w = dgap_getword(in);
+ snprintf(dgap_cword, MAXCWORD, "%s", w);
+ for (t = dgap_tlist; t->token != 0; t++) {
+ if ( !strcmp(w, t->string)) {
+ return(t->token);
+ }
+ }
+ dgap_err("board !!type not specified");
+ return(1);
+ }
+ else {
+ while ( (w = dgap_getword(in)) != NULL ) {
+ snprintf(dgap_cword, MAXCWORD, "%s", w);
+ for (t = dgap_tlist; t->token != 0; t++) {
+ if ( !strcmp(w, t->string) )
+ return(t->token);
+ }
+ }
+ return(0);
+ }
+}
+
+
+/*
+ * get a word from the input stream, also keep track of current line number.
+ * words are separated by whitespace.
+ */
+static char *dgap_getword(char **in)
+{
+ char *ret_ptr = *in;
+
+ char *ptr = dgap_sindex(*in, " \t\n");
+
+ /* If no word found, return null */
+ if (!ptr)
+ return NULL;
+
+ /* Mark new location for our buffer */
+ *ptr = '\0';
+ *in = ptr + 1;
+
+ /* Eat any extra spaces/tabs/newlines that might be present */
+ while (*in && **in && ((**in == ' ') || (**in == '\t') || (**in == '\n'))) {
+ **in = '\0';
+ *in = *in + 1;
+ }
+
+ return ret_ptr;
+}
+
+
+/*
+ * print an error message, giving the line number in the file where
+ * the error occurred.
+ */
+static void dgap_err(char *s)
+{
+ printk("DGAP: parse: %s\n", s);
+}
+
+
+/*
+ * allocate a new configuration node of type t
+ */
+static struct cnode *dgap_newnode(int t)
+{
+ struct cnode *n;
+
+ n = kmalloc(sizeof(struct cnode), GFP_ATOMIC);
+ if (n != NULL) {
+ memset((char *)n, 0, sizeof(struct cnode));
+ n->type = t;
+ }
+ return(n);
+}
+
+
+/*
+ * dgap_checknode: see if all the necessary info has been supplied for a node
+ * before creating the next node.
+ */
+static int dgap_checknode(struct cnode *p)
+{
+ switch (p->type) {
+ case BNODE:
+ if (p->u.board.v_type == 0) {
+ dgap_err("board type !not specified");
+ return(1);
+ }
+
+ return(0);
+
+ case LNODE:
+ if (p->u.line.v_speed == 0) {
+ dgap_err("line speed not specified");
+ return(1);
+ }
+ return(0);
+
+ case CNODE:
+ if (p->u.conc.v_type == 0) {
+ dgap_err("concentrator type not specified");
+ return(1);
+ }
+ if (p->u.conc.v_speed == 0) {
+ dgap_err("concentrator line speed not specified");
+ return(1);
+ }
+ if (p->u.conc.v_nport == 0) {
+ dgap_err("number of ports on concentrator not specified");
+ return(1);
+ }
+ if (p->u.conc.v_id == 0) {
+ dgap_err("concentrator id letter not specified");
+ return(1);
+ }
+ return(0);
+
+ case MNODE:
+ if (p->u.module.v_type == 0) {
+ dgap_err("EBI module type not specified");
+ return(1);
+ }
+ if (p->u.module.v_nport == 0) {
+ dgap_err("number of ports on EBI module not specified");
+ return(1);
+ }
+ if (p->u.module.v_id == 0) {
+ dgap_err("EBI module id letter not specified");
+ return(1);
+ }
+ return(0);
+ }
+ return(0);
+}
+
+/*
+ * save a string somewhere
+ */
+static char *dgap_savestring(char *s)
+{
+ char *p;
+ if ( (p = kmalloc(strlen(s) + 1, GFP_ATOMIC) ) != NULL) {
+ strcpy(p, s);
+ }
+ return(p);
+}
+
+
+/*
+ * Given a board pointer, returns whether we should use interrupts or not.
+ */
+static uint dgap_config_get_useintr(struct board_t *bd)
+{
+ struct cnode *p = NULL;
+
+ if (!bd)
+ return(0);
+
+ for (p = bd->bd_config; p; p = p->next) {
+ switch (p->type) {
+ case INTRNODE:
+ /*
+ * check for pcxr types.
+ */
+ return p->u.useintr;
+ default:
+ break;
+ }
+ }
+
+ /* If not found, then don't turn on interrupts. */
+ return 0;
+}
+
+
+/*
+ * Given a board pointer, returns whether we turn on altpin or not.
+ */
+static uint dgap_config_get_altpin(struct board_t *bd)
+{
+ struct cnode *p = NULL;
+
+ if (!bd)
+ return(0);
+
+ for (p = bd->bd_config; p; p = p->next) {
+ switch (p->type) {
+ case ANODE:
+ /*
+ * check for pcxr types.
+ */
+ return p->u.altpin;
+ default:
+ break;
+ }
+ }
+
+ /* If not found, then don't turn on interrupts. */
+ return 0;
+}
+
+
+
+/*
+ * Given a specific type of board, if found, detached link and
+ * returns the first occurrence in the list.
+ */
+static struct cnode *dgap_find_config(int type, int bus, int slot)
+{
+ struct cnode *p, *prev = NULL, *prev2 = NULL, *found = NULL;
+
+ p = &dgap_head;
+
+ while (p->next != NULL) {
+ prev = p;
+ p = p->next;
+
+ if (p->type == BNODE) {
+
+ if (p->u.board.type == type) {
+
+ if (p->u.board.v_pcibus && p->u.board.pcibus != bus) {
+ DPR(("Found matching board, but wrong bus position. System says bus %d, we want bus %ld\n",
+ bus, p->u.board.pcibus));
+ continue;
+ }
+ if (p->u.board.v_pcislot && p->u.board.pcislot != slot) {
+ DPR_INIT(("Found matching board, but wrong slot position. System says slot %d, we want slot %ld\n",
+ slot, p->u.board.pcislot));
+ continue;
+ }
+
+ DPR_INIT(("Matched type in config file\n"));
+
+ found = p;
+ /*
+ * Keep walking thru the list till we find the next board.
+ */
+ while (p->next != NULL) {
+ prev2 = p;
+ p = p->next;
+ if (p->type == BNODE) {
+
+ /*
+ * Mark the end of our 1 board chain of configs.
+ */
+ prev2->next = NULL;
+
+ /*
+ * Link the "next" board to the previous board,
+ * effectively "unlinking" our board from the main config.
+ */
+ prev->next = p;
+
+ return found;
+ }
+ }
+ /*
+ * It must be the last board in the list.
+ */
+ prev->next = NULL;
+ return found;
+ }
+ }
+ }
+ return NULL;
+}
+
+/*
+ * Given a board pointer, walks the config link, counting up
+ * all ports user specified should be on the board.
+ * (This does NOT mean they are all actually present right now tho)
+ */
+static uint dgap_config_get_number_of_ports(struct board_t *bd)
+{
+ int count = 0;
+ struct cnode *p = NULL;
+
+ if (!bd)
+ return(0);
+
+ for (p = bd->bd_config; p; p = p->next) {
+
+ switch (p->type) {
+ case BNODE:
+ /*
+ * check for pcxr types.
+ */
+ if (p->u.board.type > EPCFE)
+ count += p->u.board.nport;
+ break;
+ case CNODE:
+ count += p->u.conc.nport;
+ break;
+ case MNODE:
+ count += p->u.module.nport;
+ break;
+ }
+ }
+ return (count);
+}
+
+static char *dgap_create_config_string(struct board_t *bd, char *string)
+{
+ char *ptr = string;
+ struct cnode *p = NULL;
+ struct cnode *q = NULL;
+ int speed;
+
+ if (!bd) {
+ *ptr = 0xff;
+ return string;
+ }
+
+ for (p = bd->bd_config; p; p = p->next) {
+
+ switch (p->type) {
+ case LNODE:
+ *ptr = '\0';
+ ptr++;
+ *ptr = p->u.line.speed;
+ ptr++;
+ break;
+ case CNODE:
+ /*
+ * Because the EPC/con concentrators can have EM modules
+ * hanging off of them, we have to walk ahead in the list
+ * and keep adding the number of ports on each EM to the config.
+ * UGH!
+ */
+ speed = p->u.conc.speed;
+ q = p->next;
+ if ((q != NULL) && (q->type == MNODE) ) {
+ *ptr = (p->u.conc.nport + 0x80);
+ ptr++;
+ p = q;
+ while ((q->next != NULL) && (q->next->type) == MNODE) {
+ *ptr = (q->u.module.nport + 0x80);
+ ptr++;
+ p = q;
+ q = q->next;
+ }
+ *ptr = q->u.module.nport;
+ ptr++;
+ } else {
+ *ptr = p->u.conc.nport;
+ ptr++;
+ }
+
+ *ptr = speed;
+ ptr++;
+ break;
+ }
+ }
+
+ *ptr = 0xff;
+ return string;
+}
+
+
+
+static char *dgap_get_config_letters(struct board_t *bd, char *string)
+{
+ int found = FALSE;
+ char *ptr = string;
+ struct cnode *cptr = NULL;
+ int len = 0;
+ int left = MAXTTYNAMELEN;
+
+ if (!bd) {
+ return "<NULL>";
+ }
+
+ for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
+
+ if ((cptr->type == BNODE) &&
+ ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
+ (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
+ (cptr->u.board.type == PAPORT8))) {
+
+ found = TRUE;
+ }
+
+ if (cptr->type == TNODE && found == TRUE) {
+ char *ptr1;
+ if (strstr(cptr->u.ttyname, "tty")) {
+ ptr1 = cptr->u.ttyname;
+ ptr1 += 3;
+ }
+ else {
+ ptr1 = cptr->u.ttyname;
+ }
+ if (ptr1) {
+ len = snprintf(ptr, left, "%s", ptr1);
+ left -= len;
+ ptr += len;
+ if (left <= 0)
+ break;
+ }
+ }
+
+ if (cptr->type == CNODE) {
+ if (cptr->u.conc.id) {
+ len = snprintf(ptr, left, "%s", cptr->u.conc.id);
+ left -= len;
+ ptr += len;
+ if (left <= 0)
+ break;
+ }
+ }
+
+ if (cptr->type == MNODE) {
+ if (cptr->u.module.id) {
+ len = snprintf(ptr, left, "%s", cptr->u.module.id);
+ left -= len;
+ ptr += len;
+ if (left <= 0)
+ break;
+ }
+ }
+ }
+
+ return string;
+}
--- /dev/null
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ * Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ *
+ *************************************************************************
+ *
+ * Driver includes
+ *
+ *************************************************************************/
+
+#ifndef __DGAP_DRIVER_H
+#define __DGAP_DRIVER_H
+
+#include <linux/types.h> /* To pick up the varions Linux types */
+#include <linux/tty.h> /* To pick up the various tty structs/defines */
+#include <linux/interrupt.h> /* For irqreturn_t type */
+
+#ifndef TRUE
+# define TRUE 1
+#endif
+
+#ifndef FALSE
+# define FALSE 0
+#endif
+
+/* Required for our shared headers! */
+typedef unsigned char uchar;
+
+#if !defined(TTY_FLIPBUF_SIZE)
+# define TTY_FLIPBUF_SIZE 512
+#endif
+
+/* Sparse stuff */
+# ifndef __user
+# define __user
+# define __kernel
+# define __safe
+# define __force
+# define __chk_user_ptr(x) (void)0
+# endif
+
+
+# define PARM_STR(VAR, INIT, PERM, DESC) \
+ static char *VAR = INIT; \
+ char *dgap_##VAR; \
+ module_param(VAR, charp, PERM); \
+ MODULE_PARM_DESC(VAR, DESC);
+
+# define PARM_INT(VAR, INIT, PERM, DESC) \
+ static int VAR = INIT; \
+ int dgap_##VAR; \
+ module_param(VAR, int, PERM); \
+ MODULE_PARM_DESC(VAR, DESC);
+
+# define PARM_ULONG(VAR, INIT, PERM, DESC) \
+ static ulong VAR = INIT; \
+ ulong dgap_##VAR; \
+ module_param(VAR, long, PERM); \
+ MODULE_PARM_DESC(VAR, DESC);
+
+/*************************************************************************
+ *
+ * Driver defines
+ *
+ *************************************************************************/
+
+/*
+ * Driver identification, error and debugging statments
+ *
+ * In theory, you can change all occurrences of "digi" in the next
+ * three lines, and the driver printk's will all automagically change.
+ *
+ * APR((fmt, args, ...)); Always prints message
+ * DPR((fmt, args, ...)); Only prints if DGAP_TRACER is defined at
+ * compile time and dgap_debug!=0
+ */
+#define DG_NAME "dgap-1.3-16"
+#define DG_PART "40002347_C"
+
+#define PROCSTR "dgap" /* /proc entries */
+#define DEVSTR "/dev/dg/dgap" /* /dev entries */
+#define DRVSTR "dgap" /* Driver name string
+ * displayed by APR */
+#define APR(args) do { PRINTF_TO_KMEM(args); printk(DRVSTR": "); printk args; \
+ } while (0)
+#define RAPR(args) do { PRINTF_TO_KMEM(args); printk args; } while (0)
+
+#define TRC_TO_CONSOLE 1
+
+/*
+ * defines from dgap_pci.h
+ */
+#define PCIMAX 32 /* maximum number of PCI boards */
+
+#define DIGI_VID 0x114F
+
+#define PCI_DEVICE_EPC_DID 0x0002
+#define PCI_DEVICE_XEM_DID 0x0004
+#define PCI_DEVICE_XR_DID 0x0005
+#define PCI_DEVICE_CX_DID 0x0006
+#define PCI_DEVICE_XRJ_DID 0x0009 /* PLX-based Xr adapter */
+#define PCI_DEVICE_XR_IBM_DID 0x0011 /* IBM 8-port Async Adapter */
+#define PCI_DEVICE_XR_BULL_DID 0x0013 /* BULL 8-port Async Adapter */
+#define PCI_DEVICE_XR_SAIP_DID 0x001c /* SAIP card - Xr adapter */
+#define PCI_DEVICE_XR_422_DID 0x0012 /* Xr-422 */
+#define PCI_DEVICE_920_2_DID 0x0034 /* XR-Plus 920 K, 2 port */
+#define PCI_DEVICE_920_4_DID 0x0026 /* XR-Plus 920 K, 4 port */
+#define PCI_DEVICE_920_8_DID 0x0027 /* XR-Plus 920 K, 8 port */
+#define PCI_DEVICE_EPCJ_DID 0x000a /* PLX 9060 chip for PCI */
+#define PCI_DEVICE_CX_IBM_DID 0x001b /* IBM 128-port Async Adapter */
+#define PCI_DEVICE_920_8_HP_DID 0x0058 /* HP XR-Plus 920 K, 8 port */
+#define PCI_DEVICE_XEM_HP_DID 0x0059 /* HP Xem PCI */
+
+#define PCI_DEVICE_XEM_NAME "AccelePort XEM"
+#define PCI_DEVICE_CX_NAME "AccelePort CX"
+#define PCI_DEVICE_XR_NAME "AccelePort Xr"
+#define PCI_DEVICE_XRJ_NAME "AccelePort Xr (PLX)"
+#define PCI_DEVICE_XR_SAIP_NAME "AccelePort Xr (SAIP)"
+#define PCI_DEVICE_920_2_NAME "AccelePort Xr920 2 port"
+#define PCI_DEVICE_920_4_NAME "AccelePort Xr920 4 port"
+#define PCI_DEVICE_920_8_NAME "AccelePort Xr920 8 port"
+#define PCI_DEVICE_XR_422_NAME "AccelePort Xr 422"
+#define PCI_DEVICE_EPCJ_NAME "AccelePort EPC (PLX)"
+#define PCI_DEVICE_XR_BULL_NAME "AccelePort Xr (BULL)"
+#define PCI_DEVICE_XR_IBM_NAME "AccelePort Xr (IBM)"
+#define PCI_DEVICE_CX_IBM_NAME "AccelePort CX (IBM)"
+#define PCI_DEVICE_920_8_HP_NAME "AccelePort Xr920 8 port (HP)"
+#define PCI_DEVICE_XEM_HP_NAME "AccelePort XEM (HP)"
+
+/*
+ * On the PCI boards, there is no IO space allocated
+ * The I/O registers will be in the first 3 bytes of the
+ * upper 2MB of the 4MB memory space. The board memory
+ * will be mapped into the low 2MB of the 4MB memory space
+ */
+
+/* Potential location of PCI Bios from E0000 to FFFFF*/
+#define PCI_BIOS_SIZE 0x00020000
+
+/* Size of Memory and I/O for PCI (4MB) */
+#define PCI_RAM_SIZE 0x00400000
+
+/* Size of Memory (2MB) */
+#define PCI_MEM_SIZE 0x00200000
+
+/* Max PCI Window Size (2MB) */
+#define PCI_WIN_SIZE 0x00200000
+
+#define PCI_WIN_SHIFT 21 /* 21 bits max */
+
+/* Offset of I/0 in Memory (2MB) */
+#define PCI_IO_OFFSET 0x00200000
+
+/* Size of IO (2MB) */
+#define PCI_IO_SIZE 0x00200000
+
+/*
+ * Debugging levels can be set using debug insmod variable
+ * They can also be compiled out completely.
+ */
+
+#define DBG_INIT (dgap_debug & 0x01)
+#define DBG_BASIC (dgap_debug & 0x02)
+#define DBG_CORE (dgap_debug & 0x04)
+
+#define DBG_OPEN (dgap_debug & 0x08)
+#define DBG_CLOSE (dgap_debug & 0x10)
+#define DBG_READ (dgap_debug & 0x20)
+#define DBG_WRITE (dgap_debug & 0x40)
+
+#define DBG_IOCTL (dgap_debug & 0x80)
+
+#define DBG_PROC (dgap_debug & 0x100)
+#define DBG_PARAM (dgap_debug & 0x200)
+#define DBG_PSCAN (dgap_debug & 0x400)
+#define DBG_EVENT (dgap_debug & 0x800)
+
+#define DBG_DRAIN (dgap_debug & 0x1000)
+#define DBG_CARR (dgap_debug & 0x2000)
+
+#define DBG_MGMT (dgap_debug & 0x4000)
+
+
+#if defined(DGAP_TRACER)
+
+# if defined(TRC_TO_KMEM)
+/* Choose one: */
+# define TRC_ON_OVERFLOW_WRAP_AROUND
+# undef TRC_ON_OVERFLOW_SHIFT_BUFFER
+# endif //TRC_TO_KMEM
+
+# define TRC_MAXMSG 1024
+# define TRC_OVERFLOW "(OVERFLOW)"
+# define TRC_DTRC "/usr/bin/dtrc"
+
+#if defined TRC_TO_CONSOLE
+#define PRINTF_TO_CONSOLE(args) { printk(DRVSTR": "); printk args; }
+#else //!defined TRACE_TO_CONSOLE
+#define PRINTF_TO_CONSOLE(args)
+#endif
+
+#if defined TRC_TO_KMEM
+#define PRINTF_TO_KMEM(args) dgap_tracef args
+#else //!defined TRC_TO_KMEM
+#define PRINTF_TO_KMEM(args)
+#endif
+
+#define TRC(args) { PRINTF_TO_KMEM(args); PRINTF_TO_CONSOLE(args) }
+
+# define DPR_INIT(ARGS) if (DBG_INIT) TRC(ARGS)
+# define DPR_BASIC(ARGS) if (DBG_BASIC) TRC(ARGS)
+# define DPR_CORE(ARGS) if (DBG_CORE) TRC(ARGS)
+# define DPR_OPEN(ARGS) if (DBG_OPEN) TRC(ARGS)
+# define DPR_CLOSE(ARGS) if (DBG_CLOSE) TRC(ARGS)
+# define DPR_READ(ARGS) if (DBG_READ) TRC(ARGS)
+# define DPR_WRITE(ARGS) if (DBG_WRITE) TRC(ARGS)
+# define DPR_IOCTL(ARGS) if (DBG_IOCTL) TRC(ARGS)
+# define DPR_PROC(ARGS) if (DBG_PROC) TRC(ARGS)
+# define DPR_PARAM(ARGS) if (DBG_PARAM) TRC(ARGS)
+# define DPR_PSCAN(ARGS) if (DBG_PSCAN) TRC(ARGS)
+# define DPR_EVENT(ARGS) if (DBG_EVENT) TRC(ARGS)
+# define DPR_DRAIN(ARGS) if (DBG_DRAIN) TRC(ARGS)
+# define DPR_CARR(ARGS) if (DBG_CARR) TRC(ARGS)
+# define DPR_MGMT(ARGS) if (DBG_MGMT) TRC(ARGS)
+
+# define DPR(ARGS) if (dgap_debug) TRC(ARGS)
+# define P(X) dgap_tracef(#X "=%p\n", X)
+# define X(X) dgap_tracef(#X "=%x\n", X)
+
+#else//!defined DGAP_TRACER
+
+#define PRINTF_TO_KMEM(args)
+# define TRC(ARGS)
+# define DPR_INIT(ARGS)
+# define DPR_BASIC(ARGS)
+# define DPR_CORE(ARGS)
+# define DPR_OPEN(ARGS)
+# define DPR_CLOSE(ARGS)
+# define DPR_READ(ARGS)
+# define DPR_WRITE(ARGS)
+# define DPR_IOCTL(ARGS)
+# define DPR_PROC(ARGS)
+# define DPR_PARAM(ARGS)
+# define DPR_PSCAN(ARGS)
+# define DPR_EVENT(ARGS)
+# define DPR_DRAIN(ARGS)
+# define DPR_CARR(ARGS)
+# define DPR_MGMT(ARGS)
+
+# define DPR(args)
+
+#endif//DGAP_TRACER
+
+/* Number of boards we support at once. */
+#define MAXBOARDS 32
+#define MAXPORTS 224
+#define MAXTTYNAMELEN 200
+
+/* Our 3 magic numbers for our board, channel and unit structs */
+#define DGAP_BOARD_MAGIC 0x5c6df104
+#define DGAP_CHANNEL_MAGIC 0x6c6df104
+#define DGAP_UNIT_MAGIC 0x7c6df104
+
+/* Serial port types */
+#define DGAP_SERIAL 0
+#define DGAP_PRINT 1
+
+#define SERIAL_TYPE_NORMAL 1
+
+/* 4 extra for alignment play space */
+#define WRITEBUFLEN ((4096) + 4)
+#define MYFLIPLEN N_TTY_BUF_SIZE
+
+#define SBREAK_TIME 0x25
+#define U2BSIZE 0x400
+
+#define dgap_jiffies_from_ms(a) (((a) * HZ) / 1000)
+
+/*
+ * Our major for the mgmt devices.
+ *
+ * We can use 22, because Digi was allocated 22 and 23 for the epca driver.
+ * 22 has now become obsolete now that the "cu" devices have
+ * been removed from 2.6.
+ * Also, this *IS* the epca driver, just PCI only now.
+ */
+#ifndef DIGI_DGAP_MAJOR
+# define DIGI_DGAP_MAJOR 22
+#endif
+
+/*
+ * The parameters we use to define the periods of the moving averages.
+ */
+#define MA_PERIOD (HZ / 10)
+#define SMA_DUR (1 * HZ)
+#define EMA_DUR (1 * HZ)
+#define SMA_NPERIODS (SMA_DUR / MA_PERIOD)
+#define EMA_NPERIODS (EMA_DUR / MA_PERIOD)
+
+/*
+ * Define a local default termios struct. All ports will be created
+ * with this termios initially. This is the same structure that is defined
+ * as the default in tty_io.c with the same settings overriden as in serial.c
+ *
+ * In short, this should match the internal serial ports' defaults.
+ */
+#define DEFAULT_IFLAGS (ICRNL | IXON)
+#define DEFAULT_OFLAGS (OPOST | ONLCR)
+#define DEFAULT_CFLAGS (B9600 | CS8 | CREAD | HUPCL | CLOCAL)
+#define DEFAULT_LFLAGS (ISIG | ICANON | ECHO | ECHOE | ECHOK | \
+ ECHOCTL | ECHOKE | IEXTEN)
+
+#ifndef _POSIX_VDISABLE
+#define _POSIX_VDISABLE '\0'
+#endif
+
+#define SNIFF_MAX 65536 /* Sniff buffer size (2^n) */
+#define SNIFF_MASK (SNIFF_MAX - 1) /* Sniff wrap mask */
+
+#define VPDSIZE (512)
+
+/*
+ * Lock function/defines.
+ * Makes spotting lock/unlock locations easier.
+ */
+# define DGAP_SPINLOCK_INIT(x) spin_lock_init(&(x))
+# define DGAP_LOCK(x,y) spin_lock_irqsave(&(x), y)
+# define DGAP_UNLOCK(x,y) spin_unlock_irqrestore(&(x), y)
+# define DGAP_TRYLOCK(x,y) spin_trylock(&(x))
+
+/************************************************************************
+ * FEP memory offsets
+ ************************************************************************/
+#define START 0x0004L /* Execution start address */
+
+#define CMDBUF 0x0d10L /* Command (cm_t) structure offset */
+#define CMDSTART 0x0400L /* Start of command buffer */
+#define CMDMAX 0x0800L /* End of command buffer */
+
+#define EVBUF 0x0d18L /* Event (ev_t) structure */
+#define EVSTART 0x0800L /* Start of event buffer */
+#define EVMAX 0x0c00L /* End of event buffer */
+#define FEP5_PLUS 0x0E40 /* ASCII '5' and ASCII 'A' is here */
+#define ECS_SEG 0x0E44 /* Segment of the extended channel structure */
+#define LINE_SPEED 0x10 /* Offset into ECS_SEG for line speed */
+ /* if the fep has extended capabilities */
+
+/* BIOS MAGIC SPOTS */
+#define ERROR 0x0C14L /* BIOS error code */
+#define SEQUENCE 0x0C12L /* BIOS sequence indicator */
+#define POSTAREA 0x0C00L /* POST complete message area */
+
+/* FEP MAGIC SPOTS */
+#define FEPSTAT POSTAREA /* OS here when FEP comes up */
+#define NCHAN 0x0C02L /* number of ports FEP sees */
+#define PANIC 0x0C10L /* PANIC area for FEP */
+#define KMEMEM 0x0C30L /* Memory for KME use */
+#define CONFIG 0x0CD0L /* Concentrator configuration info */
+#define CONFIGSIZE 0x0030 /* configuration info size */
+#define DOWNREQ 0x0D00 /* Download request buffer pointer */
+
+#define CHANBUF 0x1000L /* Async channel (bs_t) structs */
+#define FEPOSSIZE 0x1FFF /* 8K FEPOS */
+
+#define XEMPORTS 0xC02 /*
+ * Offset in board memory where FEP5 stores
+ * how many ports it has detected.
+ * NOTE: FEP5 reports 64 ports when the user
+ * has the cable in EBI OUT instead of EBI IN.
+ */
+
+#define FEPCLR 0x00
+#define FEPMEM 0x02
+#define FEPRST 0x04
+#define FEPINT 0x08
+#define FEPMASK 0x0e
+#define FEPWIN 0x80
+
+#define LOWMEM 0x0100
+#define HIGHMEM 0x7f00
+
+#define FEPTIMEOUT 200000
+
+#define ENABLE_INTR 0x0e04 /* Enable interrupts flag */
+#define FEPPOLL_MIN 1 /* minimum of 1 millisecond */
+#define FEPPOLL_MAX 20 /* maximum of 20 milliseconds */
+#define FEPPOLL 0x0c26 /* Fep event poll interval */
+
+#define IALTPIN 0x0080 /* Input flag to swap DSR <-> DCD */
+
+/************************************************************************
+ * FEP supported functions
+ ************************************************************************/
+#define SRLOW 0xe0 /* Set receive low water */
+#define SRHIGH 0xe1 /* Set receive high water */
+#define FLUSHTX 0xe2 /* Flush transmit buffer */
+#define PAUSETX 0xe3 /* Pause data transmission */
+#define RESUMETX 0xe4 /* Resume data transmission */
+#define SMINT 0xe5 /* Set Modem Interrupt */
+#define SAFLOWC 0xe6 /* Set Aux. flow control chars */
+#define SBREAK 0xe8 /* Send break */
+#define SMODEM 0xe9 /* Set 8530 modem control lines */
+#define SIFLAG 0xea /* Set UNIX iflags */
+#define SFLOWC 0xeb /* Set flow control characters */
+#define STLOW 0xec /* Set transmit low water mark */
+#define RPAUSE 0xee /* Pause receive */
+#define RRESUME 0xef /* Resume receive */
+#define CHRESET 0xf0 /* Reset Channel */
+#define BUFSETALL 0xf2 /* Set Tx & Rx buffer size avail*/
+#define SOFLAG 0xf3 /* Set UNIX oflags */
+#define SHFLOW 0xf4 /* Set hardware handshake */
+#define SCFLAG 0xf5 /* Set UNIX cflags */
+#define SVNEXT 0xf6 /* Set VNEXT character */
+#define SPINTFC 0xfc /* Reserved */
+#define SCOMMODE 0xfd /* Set RS232/422 mode */
+
+
+/************************************************************************
+ * Modes for SCOMMODE
+ ************************************************************************/
+#define MODE_232 0x00
+#define MODE_422 0x01
+
+
+/************************************************************************
+ * Event flags.
+ ************************************************************************/
+#define IFBREAK 0x01 /* Break received */
+#define IFTLW 0x02 /* Transmit low water */
+#define IFTEM 0x04 /* Transmitter empty */
+#define IFDATA 0x08 /* Receive data present */
+#define IFMODEM 0x20 /* Modem status change */
+
+/************************************************************************
+ * Modem flags
+ ************************************************************************/
+# define DM_RTS 0x02 /* Request to send */
+# define DM_CD 0x80 /* Carrier detect */
+# define DM_DSR 0x20 /* Data set ready */
+# define DM_CTS 0x10 /* Clear to send */
+# define DM_RI 0x40 /* Ring indicator */
+# define DM_DTR 0x01 /* Data terminal ready */
+
+/*
+ * defines from dgap_conf.h
+ */
+#define NULLNODE 0 /* header node, not used */
+#define BNODE 1 /* Board node */
+#define LNODE 2 /* Line node */
+#define CNODE 3 /* Concentrator node */
+#define MNODE 4 /* EBI Module node */
+#define TNODE 5 /* tty name prefix node */
+#define CUNODE 6 /* cu name prefix (non-SCO) */
+#define PNODE 7 /* trans. print prefix node */
+#define JNODE 8 /* maJor number node */
+#define ANODE 9 /* altpin */
+#define TSNODE 10 /* tty structure size */
+#define CSNODE 11 /* channel structure size */
+#define BSNODE 12 /* board structure size */
+#define USNODE 13 /* unit schedule structure size */
+#define FSNODE 14 /* f2200 structure size */
+#define VSNODE 15 /* size of VPIX structures */
+#define INTRNODE 16 /* enable interrupt */
+
+/* Enumeration of tokens */
+#define BEGIN 1
+#define END 2
+#define BOARD 10
+
+#define EPCFS 11 /* start of EPC family definitions */
+#define ICX 11
+#define MCX 13
+#define PCX 14
+#define IEPC 15
+#define EEPC 16
+#define MEPC 17
+#define IPCM 18
+#define EPCM 19
+#define MPCM 20
+#define PEPC 21
+#define PPCM 22
+#ifdef CP
+#define ICP 23
+#define ECP 24
+#define MCP 25
+#endif
+#define EPCFE 25 /* end of EPC family definitions */
+#define PC2E 26
+#define PC4E 27
+#define PC4E8K 28
+#define PC8E 29
+#define PC8E8K 30
+#define PC16E 31
+#define MC2E8K 34
+#define MC4E8K 35
+#define MC8E8K 36
+
+#define AVANFS 42 /* start of Avanstar family definitions */
+#define A8P 42
+#define A16P 43
+#define AVANFE 43 /* end of Avanstar family definitions */
+
+#define DA2000FS 44 /* start of AccelePort 2000 family definitions */
+#define DA22 44 /* AccelePort 2002 */
+#define DA24 45 /* AccelePort 2004 */
+#define DA28 46 /* AccelePort 2008 */
+#define DA216 47 /* AccelePort 2016 */
+#define DAR4 48 /* AccelePort RAS 4 port */
+#define DAR8 49 /* AccelePort RAS 8 port */
+#define DDR24 50 /* DataFire RAS 24 port */
+#define DDR30 51 /* DataFire RAS 30 port */
+#define DDR48 52 /* DataFire RAS 48 port */
+#define DDR60 53 /* DataFire RAS 60 port */
+#define DA2000FE 53 /* end of AccelePort 2000/RAS family definitions */
+
+#define PCXRFS 106 /* start of PCXR family definitions */
+#define APORT4 106
+#define APORT8 107
+#define PAPORT4 108
+#define PAPORT8 109
+#define APORT4_920I 110
+#define APORT8_920I 111
+#define APORT4_920P 112
+#define APORT8_920P 113
+#define APORT2_920P 114
+#define PCXRFE 117 /* end of PCXR family definitions */
+
+#define LINE 82
+#ifdef T1
+#define T1M 83
+#define E1M 84
+#endif
+#define CONC 64
+#define CX 65
+#define EPC 66
+#define MOD 67
+#define PORTS 68
+#define METHOD 69
+#define CUSTOM 70
+#define BASIC 71
+#define STATUS 72
+#define MODEM 73
+/* The following tokens can appear in multiple places */
+#define SPEED 74
+#define NPORTS 75
+#define ID 76
+#define CABLE 77
+#define CONNECT 78
+#define IO 79
+#define MEM 80
+#define DPSZ 81
+
+#define TTYN 90
+#define CU 91
+#define PRINT 92
+#define XPRINT 93
+#define CMAJOR 94
+#define ALTPIN 95
+#define STARTO 96
+#define USEINTR 97
+#define PCIINFO 98
+
+#define TTSIZ 100
+#define CHSIZ 101
+#define BSSIZ 102
+#define UNTSIZ 103
+#define F2SIZ 104
+#define VPSIZ 105
+
+#define TOTAL_BOARD 2
+#define CURRENT_BRD 4
+#define BOARD_TYPE 6
+#define IO_ADDRESS 8
+#define MEM_ADDRESS 10
+
+#define FIELDS_PER_PAGE 18
+
+#define TB_FIELD 1
+#define CB_FIELD 3
+#define BT_FIELD 5
+#define IO_FIELD 7
+#define ID_FIELD 8
+#define ME_FIELD 9
+#define TTY_FIELD 11
+#define CU_FIELD 13
+#define PR_FIELD 15
+#define MPR_FIELD 17
+
+#define MAX_FIELD 512
+
+#define INIT 0
+#define NITEMS 128
+#define MAX_ITEM 512
+
+#define DSCRINST 1
+#define DSCRNUM 3
+#define ALTPINQ 5
+#define SSAVE 7
+
+#define DSCR "32"
+#define ONETONINE "123456789"
+#define ALL "1234567890"
+
+/*
+ * All the possible states the driver can be while being loaded.
+ */
+enum {
+ DRIVER_INITIALIZED = 0,
+ DRIVER_NEED_CONFIG_LOAD,
+ DRIVER_REQUESTED_CONFIG,
+ DRIVER_READY
+};
+
+/*
+ * All the possible states the board can be while booting up.
+ */
+enum {
+ BOARD_FAILED = 0,
+ CONFIG_NOT_FOUND,
+ BOARD_FOUND,
+ NEED_RESET,
+ FINISHED_RESET,
+ NEED_CONFIG,
+ FINISHED_CONFIG,
+ NEED_DEVICE_CREATION,
+ REQUESTED_DEVICE_CREATION,
+ FINISHED_DEVICE_CREATION,
+ NEED_BIOS_LOAD,
+ REQUESTED_BIOS,
+ WAIT_BIOS_LOAD,
+ FINISHED_BIOS_LOAD,
+ NEED_FEP_LOAD,
+ REQUESTED_FEP,
+ WAIT_FEP_LOAD,
+ FINISHED_FEP_LOAD,
+ NEED_PROC_CREATION,
+ FINISHED_PROC_CREATION,
+ BOARD_READY
+};
+
+/*
+ * All the possible states that a requested concentrator image can be in.
+ */
+enum {
+ NO_PENDING_CONCENTRATOR_REQUESTS = 0,
+ NEED_CONCENTRATOR,
+ REQUESTED_CONCENTRATOR
+};
+
+
+
+/*
+ * Modem line constants are defined as macros because DSR and
+ * DCD are swapable using the ditty altpin option.
+ */
+#define D_CD(ch) ch->ch_cd /* Carrier detect */
+#define D_DSR(ch) ch->ch_dsr /* Data set ready */
+#define D_RTS(ch) DM_RTS /* Request to send */
+#define D_CTS(ch) DM_CTS /* Clear to send */
+#define D_RI(ch) DM_RI /* Ring indicator */
+#define D_DTR(ch) DM_DTR /* Data terminal ready */
+
+
+/*************************************************************************
+ *
+ * Structures and closely related defines.
+ *
+ *************************************************************************/
+
+
+/*
+ * A structure to hold a statistics counter. We also
+ * compute moving averages for this counter.
+ */
+struct macounter
+{
+ u32 cnt; /* Total count */
+ ulong accum; /* Acuumulator per period */
+ ulong sma; /* Simple moving average */
+ ulong ema; /* Exponential moving average */
+};
+
+
+/************************************************************************
+ * Device flag definitions for bd_flags.
+ ************************************************************************/
+#define BD_FEP5PLUS 0x0001 /* Supports FEP5 Plus commands */
+#define BD_HAS_VPD 0x0002 /* Board has VPD info available */
+
+
+/*
+ * Per-board information
+ */
+struct board_t
+{
+ int magic; /* Board Magic number. */
+ int boardnum; /* Board number: 0-3 */
+ int firstminor; /* First minor, e.g. 0, 30, 60 */
+
+ int type; /* Type of board */
+ char *name; /* Product Name */
+ struct pci_dev *pdev; /* Pointer to the pci_dev struct */
+ u16 vendor; /* PCI vendor ID */
+ u16 device; /* PCI device ID */
+ u16 subvendor; /* PCI subsystem vendor ID */
+ u16 subdevice; /* PCI subsystem device ID */
+ uchar rev; /* PCI revision ID */
+ uint pci_bus; /* PCI bus value */
+ uint pci_slot; /* PCI slot value */
+ u16 maxports; /* MAX ports this board can handle */
+ uchar vpd[VPDSIZE]; /* VPD of board, if found */
+ u32 bd_flags; /* Board flags */
+
+ spinlock_t bd_lock; /* Used to protect board */
+
+ u32 state; /* State of card. */
+ wait_queue_head_t state_wait; /* Place to sleep on for state change */
+
+ struct tasklet_struct helper_tasklet; /* Poll helper tasklet */
+
+ u32 wait_for_bios;
+ u32 wait_for_fep;
+
+ struct cnode * bd_config; /* Config of board */
+
+ u16 nasync; /* Number of ports on card */
+
+ u32 use_interrupts; /* Should we be interrupt driven? */
+ ulong irq; /* Interrupt request number */
+ ulong intr_count; /* Count of interrupts */
+ u32 intr_used; /* Non-zero if using interrupts */
+ u32 intr_running; /* Non-zero if FEP knows its doing interrupts */
+
+ ulong port; /* Start of base io port of the card */
+ ulong port_end; /* End of base io port of the card */
+ ulong membase; /* Start of base memory of the card */
+ ulong membase_end; /* End of base memory of the card */
+
+ uchar *re_map_port; /* Remapped io port of the card */
+ uchar *re_map_membase;/* Remapped memory of the card */
+
+ uchar runwait; /* # Processes waiting for FEP */
+ uchar inhibit_poller; /* Tells the poller to leave us alone */
+
+ struct channel_t *channels[MAXPORTS]; /* array of pointers to our channels. */
+
+ struct tty_driver *SerialDriver;
+ char SerialName[200];
+ struct tty_driver *PrintDriver;
+ char PrintName[200];
+
+ u32 dgap_Major_Serial_Registered;
+ u32 dgap_Major_TransparentPrint_Registered;
+
+ u32 dgap_Serial_Major;
+ u32 dgap_TransparentPrint_Major;
+
+ struct bs_t *bd_bs; /* Base structure pointer */
+
+ char *flipbuf; /* Our flip buffer, alloced if board is found */
+ char *flipflagbuf; /* Our flip flag buffer, alloced if board is found */
+
+ u16 dpatype; /* The board "type", as defined by DPA */
+ u16 dpastatus; /* The board "status", as defined by DPA */
+ wait_queue_head_t kme_wait; /* Needed for DPA support */
+
+ u32 conc_dl_status; /* Status of any pending conc download */
+ /*
+ * Mgmt data.
+ */
+ char *msgbuf_head;
+ char *msgbuf;
+};
+
+
+
+/************************************************************************
+ * Unit flag definitions for un_flags.
+ ************************************************************************/
+#define UN_ISOPEN 0x0001 /* Device is open */
+#define UN_CLOSING 0x0002 /* Line is being closed */
+#define UN_IMM 0x0004 /* Service immediately */
+#define UN_BUSY 0x0008 /* Some work this channel */
+#define UN_BREAKI 0x0010 /* Input break received */
+#define UN_PWAIT 0x0020 /* Printer waiting for terminal */
+#define UN_TIME 0x0040 /* Waiting on time */
+#define UN_EMPTY 0x0080 /* Waiting output queue empty */
+#define UN_LOW 0x0100 /* Waiting output low water mark*/
+#define UN_EXCL_OPEN 0x0200 /* Open for exclusive use */
+#define UN_WOPEN 0x0400 /* Device waiting for open */
+#define UN_WIOCTL 0x0800 /* Device waiting for open */
+#define UN_HANGUP 0x8000 /* Carrier lost */
+
+struct device;
+
+/************************************************************************
+ * Structure for terminal or printer unit.
+ ************************************************************************/
+struct un_t {
+ int magic; /* Unit Magic Number. */
+ struct channel_t *un_ch;
+ u32 un_time;
+ u32 un_type;
+ u32 un_open_count; /* Counter of opens to port */
+ struct tty_struct *un_tty;/* Pointer to unit tty structure */
+ u32 un_flags; /* Unit flags */
+ wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
+ u32 un_dev; /* Minor device number */
+ tcflag_t un_oflag; /* oflags being done on board */
+ tcflag_t un_lflag; /* lflags being done on board */
+ struct device *un_sysfs;
+};
+
+
+/************************************************************************
+ * Device flag definitions for ch_flags.
+ ************************************************************************/
+#define CH_PRON 0x0001 /* Printer on string */
+#define CH_OUT 0x0002 /* Dial-out device open */
+#define CH_STOP 0x0004 /* Output is stopped */
+#define CH_STOPI 0x0008 /* Input is stopped */
+#define CH_CD 0x0010 /* Carrier is present */
+#define CH_FCAR 0x0020 /* Carrier forced on */
+
+#define CH_RXBLOCK 0x0080 /* Enable rx blocked flag */
+#define CH_WLOW 0x0100 /* Term waiting low event */
+#define CH_WEMPTY 0x0200 /* Term waiting empty event */
+#define CH_RENABLE 0x0400 /* Buffer just emptied */
+#define CH_RACTIVE 0x0800 /* Process active in xxread() */
+#define CH_RWAIT 0x1000 /* Process waiting in xxread() */
+#define CH_BAUD0 0x2000 /* Used for checking B0 transitions */
+#define CH_HANGUP 0x8000 /* Hangup received */
+
+/*
+ * Definitions for ch_sniff_flags
+ */
+#define SNIFF_OPEN 0x1
+#define SNIFF_WAIT_DATA 0x2
+#define SNIFF_WAIT_SPACE 0x4
+
+
+/************************************************************************
+ *** Definitions for Digi ditty(1) command.
+ ************************************************************************/
+
+
+/*
+ * Copyright (c) 1988-96 Digi International Inc., All Rights Reserved.
+ */
+
+/************************************************************************
+ * This module provides application access to special Digi
+ * serial line enhancements which are not standard UNIX(tm) features.
+ ************************************************************************/
+
+#if !defined(TIOCMODG)
+
+#define TIOCMODG ('d'<<8) | 250 /* get modem ctrl state */
+#define TIOCMODS ('d'<<8) | 251 /* set modem ctrl state */
+
+#ifndef TIOCM_LE
+#define TIOCM_LE 0x01 /* line enable */
+#define TIOCM_DTR 0x02 /* data terminal ready */
+#define TIOCM_RTS 0x04 /* request to send */
+#define TIOCM_ST 0x08 /* secondary transmit */
+#define TIOCM_SR 0x10 /* secondary receive */
+#define TIOCM_CTS 0x20 /* clear to send */
+#define TIOCM_CAR 0x40 /* carrier detect */
+#define TIOCM_RNG 0x80 /* ring indicator */
+#define TIOCM_DSR 0x100 /* data set ready */
+#define TIOCM_RI TIOCM_RNG /* ring (alternate) */
+#define TIOCM_CD TIOCM_CAR /* carrier detect (alt) */
+#endif
+
+#endif
+
+#if !defined(TIOCMSET)
+#define TIOCMSET ('d'<<8) | 252 /* set modem ctrl state */
+#define TIOCMGET ('d'<<8) | 253 /* set modem ctrl state */
+#endif
+
+#if !defined(TIOCMBIC)
+#define TIOCMBIC ('d'<<8) | 254 /* set modem ctrl state */
+#define TIOCMBIS ('d'<<8) | 255 /* set modem ctrl state */
+#endif
+
+
+#if !defined(TIOCSDTR)
+#define TIOCSDTR ('e'<<8) | 0 /* set DTR */
+#define TIOCCDTR ('e'<<8) | 1 /* clear DTR */
+#endif
+
+/************************************************************************
+ * Ioctl command arguments for DIGI parameters.
+ ************************************************************************/
+#define DIGI_GETA ('e'<<8) | 94 /* Read params */
+
+#define DIGI_SETA ('e'<<8) | 95 /* Set params */
+#define DIGI_SETAW ('e'<<8) | 96 /* Drain & set params */
+#define DIGI_SETAF ('e'<<8) | 97 /* Drain, flush & set params */
+
+#define DIGI_KME ('e'<<8) | 98 /* Read/Write Host */
+ /* Adapter Memory */
+
+#define DIGI_GETFLOW ('e'<<8) | 99 /* Get startc/stopc flow */
+ /* control characters */
+#define DIGI_SETFLOW ('e'<<8) | 100 /* Set startc/stopc flow */
+ /* control characters */
+#define DIGI_GETAFLOW ('e'<<8) | 101 /* Get Aux. startc/stopc */
+ /* flow control chars */
+#define DIGI_SETAFLOW ('e'<<8) | 102 /* Set Aux. startc/stopc */
+ /* flow control chars */
+
+#define DIGI_GEDELAY ('d'<<8) | 246 /* Get edelay */
+#define DIGI_SEDELAY ('d'<<8) | 247 /* Set edelay */
+
+struct digiflow_t {
+ unsigned char startc; /* flow cntl start char */
+ unsigned char stopc; /* flow cntl stop char */
+};
+
+
+#ifdef FLOW_2200
+#define F2200_GETA ('e'<<8) | 104 /* Get 2x36 flow cntl flags */
+#define F2200_SETAW ('e'<<8) | 105 /* Set 2x36 flow cntl flags */
+#define F2200_MASK 0x03 /* 2200 flow cntl bit mask */
+#define FCNTL_2200 0x01 /* 2x36 terminal flow cntl */
+#define PCNTL_2200 0x02 /* 2x36 printer flow cntl */
+#define F2200_XON 0xf8
+#define P2200_XON 0xf9
+#define F2200_XOFF 0xfa
+#define P2200_XOFF 0xfb
+
+#define FXOFF_MASK 0x03 /* 2200 flow status mask */
+#define RCVD_FXOFF 0x01 /* 2x36 Terminal XOFF rcvd */
+#define RCVD_PXOFF 0x02 /* 2x36 Printer XOFF rcvd */
+#endif
+
+/************************************************************************
+ * Values for digi_flags
+ ************************************************************************/
+#define DIGI_IXON 0x0001 /* Handle IXON in the FEP */
+#define DIGI_FAST 0x0002 /* Fast baud rates */
+#define RTSPACE 0x0004 /* RTS input flow control */
+#define CTSPACE 0x0008 /* CTS output flow control */
+#define DSRPACE 0x0010 /* DSR output flow control */
+#define DCDPACE 0x0020 /* DCD output flow control */
+#define DTRPACE 0x0040 /* DTR input flow control */
+#define DIGI_COOK 0x0080 /* Cooked processing done in FEP */
+#define DIGI_FORCEDCD 0x0100 /* Force carrier */
+#define DIGI_ALTPIN 0x0200 /* Alternate RJ-45 pin config */
+#define DIGI_AIXON 0x0400 /* Aux flow control in fep */
+#define DIGI_PRINTER 0x0800 /* Hold port open for flow cntrl*/
+#define DIGI_PP_INPUT 0x1000 /* Change parallel port to input*/
+#define DIGI_DTR_TOGGLE 0x2000 /* Support DTR Toggle */
+#define DIGI_422 0x4000 /* for 422/232 selectable panel */
+#define DIGI_RTS_TOGGLE 0x8000 /* Support RTS Toggle */
+
+/************************************************************************
+ * These options are not supported on the comxi.
+ ************************************************************************/
+#define DIGI_COMXI (DIGI_FAST|DIGI_COOK|DSRPACE|DCDPACE|DTRPACE)
+
+#define DIGI_PLEN 28 /* String length */
+#define DIGI_TSIZ 10 /* Terminal string len */
+
+/************************************************************************
+ * Structure used with ioctl commands for DIGI parameters.
+ ************************************************************************/
+struct digi_t {
+ unsigned short digi_flags; /* Flags (see above) */
+ unsigned short digi_maxcps; /* Max printer CPS */
+ unsigned short digi_maxchar; /* Max chars in print queue */
+ unsigned short digi_bufsize; /* Buffer size */
+ unsigned char digi_onlen; /* Length of ON string */
+ unsigned char digi_offlen; /* Length of OFF string */
+ char digi_onstr[DIGI_PLEN]; /* Printer on string */
+ char digi_offstr[DIGI_PLEN]; /* Printer off string */
+ char digi_term[DIGI_TSIZ]; /* terminal string */
+};
+
+/************************************************************************
+ * KME definitions and structures.
+ ************************************************************************/
+#define RW_IDLE 0 /* Operation complete */
+#define RW_READ 1 /* Read Concentrator Memory */
+#define RW_WRITE 2 /* Write Concentrator Memory */
+
+struct rw_t {
+ unsigned char rw_req; /* Request type */
+ unsigned char rw_board; /* Host Adapter board number */
+ unsigned char rw_conc; /* Concentrator number */
+ unsigned char rw_reserved; /* Reserved for expansion */
+ unsigned long rw_addr; /* Address in concentrator */
+ unsigned short rw_size; /* Read/write request length */
+ unsigned char rw_data[128]; /* Data to read/write */
+};
+
+/***********************************************************************
+ * Shrink Buffer and Board Information definitions and structures.
+
+ ************************************************************************/
+ /* Board type return codes */
+#define PCXI_TYPE 1 /* Board type at the designated port is a PC/Xi */
+#define PCXM_TYPE 2 /* Board type at the designated port is a PC/Xm */
+#define PCXE_TYPE 3 /* Board type at the designated port is a PC/Xe */
+#define MCXI_TYPE 4 /* Board type at the designated port is a MC/Xi */
+#define COMXI_TYPE 5 /* Board type at the designated port is a COM/Xi */
+
+ /* Non-Zero Result codes. */
+#define RESULT_NOBDFND 1 /* A Digi product at that port is not config installed */
+#define RESULT_NODESCT 2 /* A memory descriptor was not obtainable */
+#define RESULT_NOOSSIG 3 /* FEP/OS signature was not detected on the board */
+#define RESULT_TOOSML 4 /* Too small an area to shrink. */
+#define RESULT_NOCHAN 5 /* Channel structure for the board was not found */
+
+struct shrink_buf_struct {
+ unsigned long shrink_buf_vaddr; /* Virtual address of board */
+ unsigned long shrink_buf_phys; /* Physical address of board */
+ unsigned long shrink_buf_bseg; /* Amount of board memory */
+ unsigned long shrink_buf_hseg; /* '186 Beginning of Dual-Port */
+
+ unsigned long shrink_buf_lseg; /* '186 Beginning of freed memory */
+ unsigned long shrink_buf_mseg; /* Linear address from start of
+ dual-port were freed memory
+ begins, host viewpoint. */
+
+ unsigned long shrink_buf_bdparam; /* Parameter for xxmemon and
+ xxmemoff */
+
+ unsigned long shrink_buf_reserva; /* Reserved */
+ unsigned long shrink_buf_reservb; /* Reserved */
+ unsigned long shrink_buf_reservc; /* Reserved */
+ unsigned long shrink_buf_reservd; /* Reserved */
+
+ unsigned char shrink_buf_result; /* Reason for call failing
+ Zero is Good return */
+ unsigned char shrink_buf_init; /* Non-Zero if it caused an
+ xxinit call. */
+
+ unsigned char shrink_buf_anports; /* Number of async ports */
+ unsigned char shrink_buf_snports; /* Number of sync ports */
+ unsigned char shrink_buf_type; /* Board type 1 = PC/Xi,
+ 2 = PC/Xm,
+ 3 = PC/Xe
+ 4 = MC/Xi
+ 5 = COMX/i */
+ unsigned char shrink_buf_card; /* Card number */
+
+};
+
+/************************************************************************
+ * Structure to get driver status information
+ ************************************************************************/
+struct digi_dinfo {
+ unsigned long dinfo_nboards; /* # boards configured */
+ char dinfo_reserved[12]; /* for future expansion */
+ char dinfo_version[16]; /* driver version */
+};
+
+#define DIGI_GETDD ('d'<<8) | 248 /* get driver info */
+
+/************************************************************************
+ * Structure used with ioctl commands for per-board information
+ *
+ * physsize and memsize differ when board has "windowed" memory
+ ************************************************************************/
+struct digi_info {
+ unsigned long info_bdnum; /* Board number (0 based) */
+ unsigned long info_ioport; /* io port address */
+ unsigned long info_physaddr; /* memory address */
+ unsigned long info_physsize; /* Size of host mem window */
+ unsigned long info_memsize; /* Amount of dual-port mem */
+ /* on board */
+ unsigned short info_bdtype; /* Board type */
+ unsigned short info_nports; /* number of ports */
+ char info_bdstate; /* board state */
+ char info_reserved[7]; /* for future expansion */
+};
+
+#define DIGI_GETBD ('d'<<8) | 249 /* get board info */
+
+struct digi_stat {
+ unsigned int info_chan; /* Channel number (0 based) */
+ unsigned int info_brd; /* Board number (0 based) */
+ unsigned long info_cflag; /* cflag for channel */
+ unsigned long info_iflag; /* iflag for channel */
+ unsigned long info_oflag; /* oflag for channel */
+ unsigned long info_mstat; /* mstat for channel */
+ unsigned long info_tx_data; /* tx_data for channel */
+ unsigned long info_rx_data; /* rx_data for channel */
+ unsigned long info_hflow; /* hflow for channel */
+ unsigned long info_reserved[8]; /* for future expansion */
+};
+
+#define DIGI_GETSTAT ('d'<<8) | 244 /* get board info */
+/************************************************************************
+ *
+ * Structure used with ioctl commands for per-channel information
+ *
+ ************************************************************************/
+struct digi_ch {
+ unsigned long info_bdnum; /* Board number (0 based) */
+ unsigned long info_channel; /* Channel index number */
+ unsigned long info_ch_cflag; /* Channel cflag */
+ unsigned long info_ch_iflag; /* Channel iflag */
+ unsigned long info_ch_oflag; /* Channel oflag */
+ unsigned long info_chsize; /* Channel structure size */
+ unsigned long info_sleep_stat; /* sleep status */
+ dev_t info_dev; /* device number */
+ unsigned char info_initstate; /* Channel init state */
+ unsigned char info_running; /* Channel running state */
+ long reserved[8]; /* reserved for future use */
+};
+
+/*
+* This structure is used with the DIGI_FEPCMD ioctl to
+* tell the driver which port to send the command for.
+*/
+struct digi_cmd {
+ int cmd;
+ int word;
+ int ncmds;
+ int chan; /* channel index (zero based) */
+ int bdid; /* board index (zero based) */
+};
+
+/*
+* info_sleep_stat defines
+*/
+#define INFO_RUNWAIT 0x0001
+#define INFO_WOPEN 0x0002
+#define INFO_TTIOW 0x0004
+#define INFO_CH_RWAIT 0x0008
+#define INFO_CH_WEMPTY 0x0010
+#define INFO_CH_WLOW 0x0020
+#define INFO_XXBUF_BUSY 0x0040
+
+#define DIGI_GETCH ('d'<<8) | 245 /* get board info */
+
+/* Board type definitions */
+
+#define SUBTYPE 0007
+#define T_PCXI 0000
+#define T_PCXM 0001
+#define T_PCXE 0002
+#define T_PCXR 0003
+#define T_SP 0004
+#define T_SP_PLUS 0005
+# define T_HERC 0000
+# define T_HOU 0001
+# define T_LON 0002
+# define T_CHA 0003
+#define FAMILY 0070
+#define T_COMXI 0000
+#define T_PCXX 0010
+#define T_CX 0020
+#define T_EPC 0030
+#define T_PCLITE 0040
+#define T_SPXX 0050
+#define T_AVXX 0060
+#define T_DXB 0070
+#define T_A2K_4_8 0070
+#define BUSTYPE 0700
+#define T_ISABUS 0000
+#define T_MCBUS 0100
+#define T_EISABUS 0200
+#define T_PCIBUS 0400
+
+/* Board State Definitions */
+
+#define BD_RUNNING 0x0
+#define BD_REASON 0x7f
+#define BD_NOTFOUND 0x1
+#define BD_NOIOPORT 0x2
+#define BD_NOMEM 0x3
+#define BD_NOBIOS 0x4
+#define BD_NOFEP 0x5
+#define BD_FAILED 0x6
+#define BD_ALLOCATED 0x7
+#define BD_TRIBOOT 0x8
+#define BD_BADKME 0x80
+
+#define DIGI_LOOPBACK ('d'<<8) | 252 /* Enable/disable UART internal loopback */
+#define DIGI_SPOLL ('d'<<8) | 254 /* change poller rate */
+
+#define DIGI_SETCUSTOMBAUD _IOW('e', 106, int) /* Set integer baud rate */
+#define DIGI_GETCUSTOMBAUD _IOR('e', 107, int) /* Get integer baud rate */
+#define DIGI_RESET_PORT ('e'<<8) | 93 /* Reset port */
+
+/************************************************************************
+ * Channel information structure.
+ ************************************************************************/
+struct channel_t {
+ int magic; /* Channel Magic Number */
+ struct bs_t *ch_bs; /* Base structure pointer */
+ struct cm_t *ch_cm; /* Command queue pointer */
+ struct board_t *ch_bd; /* Board structure pointer */
+ unsigned char *ch_vaddr; /* FEP memory origin */
+ unsigned char *ch_taddr; /* Write buffer origin */
+ unsigned char *ch_raddr; /* Read buffer origin */
+ struct digi_t ch_digi; /* Transparent Print structure */
+ struct un_t ch_tun; /* Terminal unit info */
+ struct un_t ch_pun; /* Printer unit info */
+
+ spinlock_t ch_lock; /* provide for serialization */
+ wait_queue_head_t ch_flags_wait;
+
+ u32 pscan_state;
+ uchar pscan_savechar;
+
+ u32 ch_portnum; /* Port number, 0 offset. */
+ u32 ch_open_count; /* open count */
+ u32 ch_flags; /* Channel flags */
+
+
+ u32 ch_close_delay; /* How long we should drop RTS/DTR for */
+
+ u32 ch_cpstime; /* Time for CPS calculations */
+
+ tcflag_t ch_c_iflag; /* channel iflags */
+ tcflag_t ch_c_cflag; /* channel cflags */
+ tcflag_t ch_c_oflag; /* channel oflags */
+ tcflag_t ch_c_lflag; /* channel lflags */
+
+ u16 ch_fepiflag; /* FEP tty iflags */
+ u16 ch_fepcflag; /* FEP tty cflags */
+ u16 ch_fepoflag; /* FEP tty oflags */
+ u16 ch_wopen; /* Waiting for open process cnt */
+ u16 ch_tstart; /* Transmit buffer start */
+ u16 ch_tsize; /* Transmit buffer size */
+ u16 ch_rstart; /* Receive buffer start */
+ u16 ch_rsize; /* Receive buffer size */
+ u16 ch_rdelay; /* Receive delay time */
+
+ u16 ch_tlw; /* Our currently set low water mark */
+
+ u16 ch_cook; /* Output character mask */
+
+ uchar ch_card; /* Card channel is on */
+ uchar ch_stopc; /* Stop character */
+ uchar ch_startc; /* Start character */
+
+ uchar ch_mostat; /* FEP output modem status */
+ uchar ch_mistat; /* FEP input modem status */
+ uchar ch_mforce; /* Modem values to be forced */
+ uchar ch_mval; /* Force values */
+ uchar ch_fepstopc; /* FEP stop character */
+ uchar ch_fepstartc; /* FEP start character */
+
+ uchar ch_astopc; /* Auxiliary Stop character */
+ uchar ch_astartc; /* Auxiliary Start character */
+ uchar ch_fepastopc; /* Auxiliary FEP stop char */
+ uchar ch_fepastartc; /* Auxiliary FEP start char */
+
+ uchar ch_hflow; /* FEP hardware handshake */
+ uchar ch_dsr; /* stores real dsr value */
+ uchar ch_cd; /* stores real cd value */
+ uchar ch_tx_win; /* channel tx buffer window */
+ uchar ch_rx_win; /* channel rx buffer window */
+ uint ch_custom_speed; /* Custom baud, if set */
+ uint ch_baud_info; /* Current baud info for /proc output */
+ ulong ch_rxcount; /* total of data received so far */
+ ulong ch_txcount; /* total of data transmitted so far */
+ ulong ch_err_parity; /* Count of parity errors on channel */
+ ulong ch_err_frame; /* Count of framing errors on channel */
+ ulong ch_err_break; /* Count of breaks on channel */
+ ulong ch_err_overrun; /* Count of overruns on channel */
+
+ uint ch_sniff_in;
+ uint ch_sniff_out;
+ char *ch_sniff_buf; /* Sniff buffer for proc */
+ ulong ch_sniff_flags; /* Channel flags */
+ wait_queue_head_t ch_sniff_wait;
+};
+
+/************************************************************************
+ * Command structure definition.
+ ************************************************************************/
+struct cm_t {
+ volatile unsigned short cm_head; /* Command buffer head offset */
+ volatile unsigned short cm_tail; /* Command buffer tail offset */
+ volatile unsigned short cm_start; /* start offset of buffer */
+ volatile unsigned short cm_max; /* last offset of buffer */
+};
+
+/************************************************************************
+ * Event structure definition.
+ ************************************************************************/
+struct ev_t {
+ volatile unsigned short ev_head; /* Command buffer head offset */
+ volatile unsigned short ev_tail; /* Command buffer tail offset */
+ volatile unsigned short ev_start; /* start offset of buffer */
+ volatile unsigned short ev_max; /* last offset of buffer */
+};
+
+/************************************************************************
+ * Download buffer structure.
+ ************************************************************************/
+struct downld_t {
+ uchar dl_type; /* Header */
+ uchar dl_seq; /* Download sequence */
+ ushort dl_srev; /* Software revision number */
+ ushort dl_lrev; /* Low revision number */
+ ushort dl_hrev; /* High revision number */
+ ushort dl_seg; /* Start segment address */
+ ushort dl_size; /* Number of bytes to download */
+ uchar dl_data[1024]; /* Download data */
+};
+
+/************************************************************************
+ * Per channel buffer structure
+ ************************************************************************
+ * Base Structure Entries Usage Meanings to Host *
+ * *
+ * W = read write R = read only *
+ * C = changed by commands only *
+ * U = unknown (may be changed w/o notice) *
+ ************************************************************************/
+struct bs_t {
+ volatile unsigned short tp_jmp; /* Transmit poll jump */
+ volatile unsigned short tc_jmp; /* Cooked procedure jump */
+ volatile unsigned short ri_jmp; /* Not currently used */
+ volatile unsigned short rp_jmp; /* Receive poll jump */
+
+ volatile unsigned short tx_seg; /* W Tx segment */
+ volatile unsigned short tx_head; /* W Tx buffer head offset */
+ volatile unsigned short tx_tail; /* R Tx buffer tail offset */
+ volatile unsigned short tx_max; /* W Tx buffer size - 1 */
+
+ volatile unsigned short rx_seg; /* W Rx segment */
+ volatile unsigned short rx_head; /* W Rx buffer head offset */
+ volatile unsigned short rx_tail; /* R Rx buffer tail offset */
+ volatile unsigned short rx_max; /* W Rx buffer size - 1 */
+
+ volatile unsigned short tx_lw; /* W Tx buffer low water mark */
+ volatile unsigned short rx_lw; /* W Rx buffer low water mark */
+ volatile unsigned short rx_hw; /* W Rx buffer high water mark */
+ volatile unsigned short incr; /* W Increment to next channel */
+
+ volatile unsigned short fepdev; /* U SCC device base address */
+ volatile unsigned short edelay; /* W Exception delay */
+ volatile unsigned short blen; /* W Break length */
+ volatile unsigned short btime; /* U Break complete time */
+
+ volatile unsigned short iflag; /* C UNIX input flags */
+ volatile unsigned short oflag; /* C UNIX output flags */
+ volatile unsigned short cflag; /* C UNIX control flags */
+ volatile unsigned short wfill[13]; /* U Reserved for expansion */
+
+ volatile unsigned char num; /* U Channel number */
+ volatile unsigned char ract; /* U Receiver active counter */
+ volatile unsigned char bstat; /* U Break status bits */
+ volatile unsigned char tbusy; /* W Transmit busy */
+ volatile unsigned char iempty; /* W Transmit empty event enable */
+ volatile unsigned char ilow; /* W Transmit low-water event enable */
+ volatile unsigned char idata; /* W Receive data interrupt enable */
+ volatile unsigned char eflag; /* U Host event flags */
+
+ volatile unsigned char tflag; /* U Transmit flags */
+ volatile unsigned char rflag; /* U Receive flags */
+ volatile unsigned char xmask; /* U Transmit ready flags */
+ volatile unsigned char xval; /* U Transmit ready value */
+ volatile unsigned char m_stat; /* RC Modem status bits */
+ volatile unsigned char m_change; /* U Modem bits which changed */
+ volatile unsigned char m_int; /* W Modem interrupt enable bits */
+ volatile unsigned char m_last; /* U Last modem status */
+
+ volatile unsigned char mtran; /* C Unreported modem trans */
+ volatile unsigned char orun; /* C Buffer overrun occurred */
+ volatile unsigned char astartc; /* W Auxiliary Xon char */
+ volatile unsigned char astopc; /* W Auxiliary Xoff char */
+ volatile unsigned char startc; /* W Xon character */
+ volatile unsigned char stopc; /* W Xoff character */
+ volatile unsigned char vnextc; /* W Vnext character */
+ volatile unsigned char hflow; /* C Software flow control */
+
+ volatile unsigned char fillc; /* U Delay Fill character */
+ volatile unsigned char ochar; /* U Saved output character */
+ volatile unsigned char omask; /* U Output character mask */
+
+ volatile unsigned char bfill[13]; /* U Reserved for expansion */
+
+ volatile unsigned char scc[16]; /* U SCC registers */
+};
+
+struct cnode {
+ struct cnode *next;
+ int type;
+ int numbrd;
+
+ union {
+ struct {
+ char type; /* Board Type */
+ short port; /* I/O Address */
+ char *portstr; /* I/O Address in string */
+ long addr; /* Memory Address */
+ char *addrstr; /* Memory Address in string */
+ long pcibus; /* PCI BUS */
+ char *pcibusstr; /* PCI BUS in string */
+ long pcislot; /* PCI SLOT */
+ char *pcislotstr; /* PCI SLOT in string */
+ char nport; /* Number of Ports */
+ char *id; /* tty id */
+ int start; /* start of tty counting */
+ char *method; /* Install method */
+ char v_type;
+ char v_port;
+ char v_addr;
+ char v_pcibus;
+ char v_pcislot;
+ char v_nport;
+ char v_id;
+ char v_start;
+ char v_method;
+ char line1;
+ char line2;
+ char conc1; /* total concs in line1 */
+ char conc2; /* total concs in line2 */
+ char module1; /* total modules for line1 */
+ char module2; /* total modules for line2 */
+ char *status; /* config status */
+ char *dimstatus; /* Y/N */
+ int status_index; /* field pointer */
+ } board;
+
+ struct {
+ char *cable;
+ char v_cable;
+ char speed;
+ char v_speed;
+ } line;
+
+ struct {
+ char type;
+ char *connect;
+ char speed;
+ char nport;
+ char *id;
+ char *idstr;
+ int start;
+ char v_type;
+ char v_connect;
+ char v_speed;
+ char v_nport;
+ char v_id;
+ char v_start;
+ } conc;
+
+ struct {
+ char type;
+ char nport;
+ char *id;
+ char *idstr;
+ int start;
+ char v_type;
+ char v_nport;
+ char v_id;
+ char v_start;
+ } module;
+
+ char *ttyname;
+
+ char *cuname;
+
+ char *printname;
+
+ int majornumber;
+
+ int altpin;
+
+ int ttysize;
+
+ int chsize;
+
+ int bssize;
+
+ int unsize;
+
+ int f2size;
+
+ int vpixsize;
+
+ int useintr;
+ } u;
+};
+
+#endif
+++ /dev/null
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
- *
- * This is shared code between Digi's CVS archive and the
- * Linux Kernel sources.
- * Changing the source just for reformatting needlessly breaks
- * our CVS diff history.
- *
- * Send any bug fixes/changes to: Eng.Linux at digi dot com.
- * Thank you.
- *
- */
-
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/delay.h> /* For udelay */
-#include <linux/slab.h>
-#include <asm/uaccess.h> /* For copy_from_user/copy_to_user */
-#include <linux/sched.h>
-
-#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
-#include <linux/ctype.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_reg.h>
-#include <asm/io.h> /* For read[bwl]/write[bwl] */
-
-#include <linux/string.h>
-#include <linux/device.h>
-#include <linux/kdev_t.h>
-
-#include "dgap_driver.h"
-
-#define init_MUTEX(sem) sema_init(sem, 1)
-#define DECLARE_MUTEX(name) \
- struct semaphore name = __SEMAPHORE_INITIALIZER(name, 1)
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Digi International, http://www.digi.com");
-MODULE_DESCRIPTION("Driver for the Digi International EPCA PCI based product line");
-MODULE_SUPPORTED_DEVICE("dgap");
-
-/*
- * insmod command line overrideable parameters
- *
- * NOTE: we use a set of macros to create the variables, which allows
- * us to specify the variable type, name, initial value, and description.
- */
-PARM_INT(debug, 0x00, 0644, "Driver debugging level");
-PARM_INT(rawreadok, 1, 0644, "Bypass flip buffers on input");
-PARM_INT(trcbuf_size, 0x100000, 0644, "Debugging trace buffer size.");
-
-
-/**************************************************************************
- *
- * protos for this file
- *
- */
-
-static int dgap_start(void);
-static void dgap_init_globals(void);
-static int dgap_found_board(struct pci_dev *pdev, int id);
-static void dgap_cleanup_board(struct board_t *brd);
-static void dgap_poll_handler(ulong dummy);
-static int dgap_init_pci(void);
-static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
-static void dgap_remove_one(struct pci_dev *dev);
-static int dgap_probe1(struct pci_dev *pdev, int card_type);
-static void dgap_mbuf(struct board_t *brd, const char *fmt, ...);
-static int dgap_do_remap(struct board_t *brd);
-static irqreturn_t dgap_intr(int irq, void *voidbrd);
-
-/* Our function prototypes */
-static int dgap_tty_open(struct tty_struct *tty, struct file *file);
-static void dgap_tty_close(struct tty_struct *tty, struct file *file);
-static int dgap_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch);
-static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
-static int dgap_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo);
-static int dgap_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info);
-static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo);
-static int dgap_tty_digisetedelay(struct tty_struct *tty, int __user *new_info);
-static int dgap_tty_write_room(struct tty_struct* tty);
-static int dgap_tty_chars_in_buffer(struct tty_struct* tty);
-static void dgap_tty_start(struct tty_struct *tty);
-static void dgap_tty_stop(struct tty_struct *tty);
-static void dgap_tty_throttle(struct tty_struct *tty);
-static void dgap_tty_unthrottle(struct tty_struct *tty);
-static void dgap_tty_flush_chars(struct tty_struct *tty);
-static void dgap_tty_flush_buffer(struct tty_struct *tty);
-static void dgap_tty_hangup(struct tty_struct *tty);
-static int dgap_wait_for_drain(struct tty_struct *tty);
-static int dgap_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value);
-static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value);
-static int dgap_tty_digisetcustombaud(struct tty_struct *tty, int __user *new_info);
-static int dgap_tty_digigetcustombaud(struct tty_struct *tty, int __user *retinfo);
-static int dgap_tty_tiocmget(struct tty_struct *tty);
-static int dgap_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear);
-static int dgap_tty_send_break(struct tty_struct *tty, int msec);
-static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout);
-static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf, int count);
-static void dgap_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios);
-static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c);
-static void dgap_tty_send_xchar(struct tty_struct *tty, char ch);
-
-static int dgap_tty_register(struct board_t *brd);
-static int dgap_tty_preinit(void);
-static int dgap_tty_init(struct board_t *);
-static void dgap_tty_post_uninit(void);
-static void dgap_tty_uninit(struct board_t *);
-static void dgap_carrier(struct channel_t *ch);
-static void dgap_input(struct channel_t *ch);
-
-/*
- * Our function prototypes from dgap_fep5
- */
-static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds);
-static int dgap_event(struct board_t *bd);
-
-static void dgap_poll_tasklet(unsigned long data);
-static void dgap_cmdb(struct channel_t *ch, uchar cmd, uchar byte1, uchar byte2, uint ncmds);
-static void dgap_cmdw(struct channel_t *ch, uchar cmd, u16 word, uint ncmds);
-static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt);
-static int dgap_param(struct tty_struct *tty);
-static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf, unsigned char *fbuf, int *len);
-static uint dgap_get_custom_baud(struct channel_t *ch);
-static void dgap_firmware_reset_port(struct channel_t *ch);
-
-/*
- * Function prototypes from dgap_parse.c.
- */
-static int dgap_gettok(char **in, struct cnode *p);
-static char *dgap_getword(char **in);
-static char *dgap_savestring(char *s);
-static struct cnode *dgap_newnode(int t);
-static int dgap_checknode(struct cnode *p);
-static void dgap_err(char *s);
-
-/*
- * Function prototypes from dgap_sysfs.h
- */
-struct board_t;
-struct channel_t;
-struct un_t;
-struct pci_driver;
-struct class_device;
-
-static void dgap_create_ports_sysfiles(struct board_t *bd);
-static void dgap_remove_ports_sysfiles(struct board_t *bd);
-
-static void dgap_create_driver_sysfiles(struct pci_driver *);
-static void dgap_remove_driver_sysfiles(struct pci_driver *);
-
-static int dgap_tty_class_init(void);
-static int dgap_tty_class_destroy(void);
-
-static void dgap_create_tty_sysfs(struct un_t *un, struct device *c);
-static void dgap_remove_tty_sysfs(struct device *c);
-
-/*
- * Function prototypes from dgap_parse.h
- */
-static int dgap_parsefile(char **in, int Remove);
-static struct cnode *dgap_find_config(int type, int bus, int slot);
-static uint dgap_config_get_number_of_ports(struct board_t *bd);
-static char *dgap_create_config_string(struct board_t *bd, char *string);
-static char *dgap_get_config_letters(struct board_t *bd, char *string);
-static uint dgap_config_get_useintr(struct board_t *bd);
-static uint dgap_config_get_altpin(struct board_t *bd);
-
-static int dgap_ms_sleep(ulong ms);
-static char *dgap_ioctl_name(int cmd);
-static void dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len);
-static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len);
-static void dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len);
-static void dgap_do_config_load(uchar __user *uaddr, int len);
-static int dgap_after_config_loaded(void);
-static int dgap_finalize_board_init(struct board_t *brd);
-
-
-/* Driver load/unload functions */
-int dgap_init_module(void);
-void dgap_cleanup_module(void);
-
-module_init(dgap_init_module);
-module_exit(dgap_cleanup_module);
-
-
-/*
- * File operations permitted on Control/Management major.
- */
-static struct file_operations DgapBoardFops =
-{
- .owner = THIS_MODULE,
-};
-
-
-/*
- * Globals
- */
-static uint dgap_NumBoards;
-static struct board_t *dgap_Board[MAXBOARDS];
-DEFINE_SPINLOCK(dgap_global_lock);
-static ulong dgap_poll_counter;
-static char *dgap_config_buf;
-static int dgap_driver_state = DRIVER_INITIALIZED;
-DEFINE_SPINLOCK(dgap_dl_lock);
-static wait_queue_head_t dgap_dl_wait;
-static int dgap_dl_action;
-static int dgap_poll_tick = 20; /* Poll interval - 20 ms */
-
-/*
- * Static vars.
- */
-static int dgap_Major_Control_Registered = FALSE;
-static uint dgap_driver_start = FALSE;
-
-static struct class * dgap_class;
-
-static struct board_t *dgap_BoardsByMajor[256];
-static uchar *dgap_TmpWriteBuf = NULL;
-DECLARE_MUTEX(dgap_TmpWriteSem);
-static uint dgap_count = 500;
-
-/*
- * Poller stuff
- */
-DEFINE_SPINLOCK(dgap_poll_lock); /* Poll scheduling lock */
-static ulong dgap_poll_time; /* Time of next poll */
-static uint dgap_poll_stop; /* Used to tell poller to stop */
-static struct timer_list dgap_poll_timer;
-
-
-static struct pci_device_id dgap_pci_tbl[] = {
- { DIGI_VID, PCI_DEVICE_XEM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { DIGI_VID, PCI_DEVICE_CX_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
- { DIGI_VID, PCI_DEVICE_CX_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
- { DIGI_VID, PCI_DEVICE_EPCJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
- { DIGI_VID, PCI_DEVICE_920_2_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
- { DIGI_VID, PCI_DEVICE_920_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
- { DIGI_VID, PCI_DEVICE_920_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
- { DIGI_VID, PCI_DEVICE_XR_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
- { DIGI_VID, PCI_DEVICE_XRJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
- { DIGI_VID, PCI_DEVICE_XR_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
- { DIGI_VID, PCI_DEVICE_XR_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
- { DIGI_VID, PCI_DEVICE_XR_SAIP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
- { DIGI_VID, PCI_DEVICE_XR_BULL_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
- { DIGI_VID, PCI_DEVICE_920_8_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
- { DIGI_VID, PCI_DEVICE_XEM_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
- {0,} /* 0 terminated list. */
-};
-MODULE_DEVICE_TABLE(pci, dgap_pci_tbl);
-
-
-/*
- * A generic list of Product names, PCI Vendor ID, and PCI Device ID.
- */
-struct board_id {
- uint config_type;
- uchar *name;
- uint maxports;
- uint dpatype;
-};
-
-static struct board_id dgap_Ids[] =
-{
- { PPCM, PCI_DEVICE_XEM_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS) },
- { PCX, PCI_DEVICE_CX_NAME, 128, (T_CX | T_PCIBUS) },
- { PCX, PCI_DEVICE_CX_IBM_NAME, 128, (T_CX | T_PCIBUS) },
- { PEPC, PCI_DEVICE_EPCJ_NAME, 224, (T_EPC | T_PCIBUS) },
- { APORT2_920P, PCI_DEVICE_920_2_NAME, 2, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { APORT4_920P, PCI_DEVICE_920_4_NAME, 4, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { APORT8_920P, PCI_DEVICE_920_8_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { PAPORT8, PCI_DEVICE_XR_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { PAPORT8, PCI_DEVICE_XRJ_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { PAPORT8, PCI_DEVICE_XR_422_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { PAPORT8, PCI_DEVICE_XR_IBM_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { PAPORT8, PCI_DEVICE_XR_SAIP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { PAPORT8, PCI_DEVICE_XR_BULL_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { APORT8_920P, PCI_DEVICE_920_8_HP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS) },
- { PPCM, PCI_DEVICE_XEM_HP_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS) },
- {0,} /* 0 terminated list. */
-};
-
-static struct pci_driver dgap_driver = {
- .name = "dgap",
- .probe = dgap_init_one,
- .id_table = dgap_pci_tbl,
- .remove = dgap_remove_one,
-};
-
-
-static char *dgap_state_text[] = {
- "Board Failed",
- "Configuration for board not found.\n\t\t\tRun mpi to configure board.",
- "Board Found",
- "Need Reset",
- "Finished Reset",
- "Need Config",
- "Finished Config",
- "Need Device Creation",
- "Requested Device Creation",
- "Finished Device Creation",
- "Need BIOS Load",
- "Requested BIOS",
- "Doing BIOS Load",
- "Finished BIOS Load",
- "Need FEP Load",
- "Requested FEP",
- "Doing FEP Load",
- "Finished FEP Load",
- "Requested PROC creation",
- "Finished PROC creation",
- "Board READY",
-};
-
-static char *dgap_driver_state_text[] = {
- "Driver Initialized",
- "Driver needs configuration load.",
- "Driver requested configuration from download daemon.",
- "Driver Ready."
-};
-
-/*
- * Default transparent print information.
- */
-static struct digi_t dgap_digi_init = {
- .digi_flags = DIGI_COOK, /* Flags */
- .digi_maxcps = 100, /* Max CPS */
- .digi_maxchar = 50, /* Max chars in print queue */
- .digi_bufsize = 100, /* Printer buffer size */
- .digi_onlen = 4, /* size of printer on string */
- .digi_offlen = 4, /* size of printer off string */
- .digi_onstr = "\033[5i", /* ANSI printer on string ] */
- .digi_offstr = "\033[4i", /* ANSI printer off string ] */
- .digi_term = "ansi" /* default terminal type */
-};
-
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially.
- *
- * This defines a raw port at 9600 baud, 8 data bits, no parity,
- * 1 stop bit.
- */
-
-static struct ktermios DgapDefaultTermios =
-{
- .c_iflag = (DEFAULT_IFLAGS), /* iflags */
- .c_oflag = (DEFAULT_OFLAGS), /* oflags */
- .c_cflag = (DEFAULT_CFLAGS), /* cflags */
- .c_lflag = (DEFAULT_LFLAGS), /* lflags */
- .c_cc = INIT_C_CC,
- .c_line = 0,
-};
-
-static const struct tty_operations dgap_tty_ops = {
- .open = dgap_tty_open,
- .close = dgap_tty_close,
- .write = dgap_tty_write,
- .write_room = dgap_tty_write_room,
- .flush_buffer = dgap_tty_flush_buffer,
- .chars_in_buffer = dgap_tty_chars_in_buffer,
- .flush_chars = dgap_tty_flush_chars,
- .ioctl = dgap_tty_ioctl,
- .set_termios = dgap_tty_set_termios,
- .stop = dgap_tty_stop,
- .start = dgap_tty_start,
- .throttle = dgap_tty_throttle,
- .unthrottle = dgap_tty_unthrottle,
- .hangup = dgap_tty_hangup,
- .put_char = dgap_tty_put_char,
- .tiocmget = dgap_tty_tiocmget,
- .tiocmset = dgap_tty_tiocmset,
- .break_ctl = dgap_tty_send_break,
- .wait_until_sent = dgap_tty_wait_until_sent,
- .send_xchar = dgap_tty_send_xchar
-};
-
-/*
- * Our needed internal static variables from dgap_parse.c
- */
-static struct cnode dgap_head;
-#define MAXCWORD 200
-static char dgap_cword[MAXCWORD];
-
-struct toklist {
- int token;
- char *string;
-};
-
-static struct toklist dgap_tlist[] = {
- { BEGIN, "config_begin" },
- { END, "config_end" },
- { BOARD, "board" },
- { PCX, "Digi_AccelePort_C/X_PCI" }, /* C/X_PCI */
- { PEPC, "Digi_AccelePort_EPC/X_PCI" }, /* EPC/X_PCI */
- { PPCM, "Digi_AccelePort_Xem_PCI" }, /* PCI/Xem */
- { APORT2_920P, "Digi_AccelePort_2r_920_PCI" },
- { APORT4_920P, "Digi_AccelePort_4r_920_PCI" },
- { APORT8_920P, "Digi_AccelePort_8r_920_PCI" },
- { PAPORT4, "Digi_AccelePort_4r_PCI(EIA-232/RS-422)" },
- { PAPORT8, "Digi_AccelePort_8r_PCI(EIA-232/RS-422)" },
- { IO, "io" },
- { PCIINFO, "pciinfo" },
- { LINE, "line" },
- { CONC, "conc" },
- { CONC, "concentrator" },
- { CX, "cx" },
- { CX, "ccon" },
- { EPC, "epccon" },
- { EPC, "epc" },
- { MOD, "module" },
- { ID, "id" },
- { STARTO, "start" },
- { SPEED, "speed" },
- { CABLE, "cable" },
- { CONNECT, "connect" },
- { METHOD, "method" },
- { STATUS, "status" },
- { CUSTOM, "Custom" },
- { BASIC, "Basic" },
- { MEM, "mem" },
- { MEM, "memory" },
- { PORTS, "ports" },
- { MODEM, "modem" },
- { NPORTS, "nports" },
- { TTYN, "ttyname" },
- { CU, "cuname" },
- { PRINT, "prname" },
- { CMAJOR, "major" },
- { ALTPIN, "altpin" },
- { USEINTR, "useintr" },
- { TTSIZ, "ttysize" },
- { CHSIZ, "chsize" },
- { BSSIZ, "boardsize" },
- { UNTSIZ, "schedsize" },
- { F2SIZ, "f2200size" },
- { VPSIZ, "vpixsize" },
- { 0, NULL }
-};
-
-/************************************************************************
- *
- * Driver load/unload functions
- *
- ************************************************************************/
-
-/*
- * init_module()
- *
- * Module load. This is where it all starts.
- */
-int dgap_init_module(void)
-{
- int rc = 0;
-
- APR(("%s, Digi International Part Number %s\n", DG_NAME, DG_PART));
-
- /*
- * Initialize global stuff
- */
- rc = dgap_start();
-
- if (rc < 0) {
- return(rc);
- }
-
- /*
- * Find and configure all the cards
- */
- rc = dgap_init_pci();
-
- /*
- * If something went wrong in the scan, bail out of driver.
- */
- if (rc < 0) {
- /* Only unregister the pci driver if it was actually registered. */
- if (dgap_NumBoards)
- pci_unregister_driver(&dgap_driver);
- else
- printk("WARNING: dgap driver load failed. No DGAP boards found.\n");
-
- dgap_cleanup_module();
- }
- else {
- dgap_create_driver_sysfiles(&dgap_driver);
- }
-
- DPR_INIT(("Finished init_module. Returning %d\n", rc));
- return (rc);
-}
-
-
-/*
- * Start of driver.
- */
-static int dgap_start(void)
-{
- int rc = 0;
- unsigned long flags;
-
- if (dgap_driver_start == FALSE) {
-
- dgap_driver_start = TRUE;
-
- /* make sure that the globals are init'd before we do anything else */
- dgap_init_globals();
-
- dgap_NumBoards = 0;
-
- APR(("For the tools package or updated drivers please visit http://www.digi.com\n"));
-
- /*
- * Register our base character device into the kernel.
- * This allows the download daemon to connect to the downld device
- * before any of the boards are init'ed.
- */
- if (!dgap_Major_Control_Registered) {
- /*
- * Register management/dpa devices
- */
- rc = register_chrdev(DIGI_DGAP_MAJOR, "dgap", &DgapBoardFops);
- if (rc < 0) {
- APR(("Can't register dgap driver device (%d)\n", rc));
- return (rc);
- }
-
- dgap_class = class_create(THIS_MODULE, "dgap_mgmt");
- device_create(dgap_class, NULL,
- MKDEV(DIGI_DGAP_MAJOR, 0),
- NULL, "dgap_mgmt");
- device_create(dgap_class, NULL,
- MKDEV(DIGI_DGAP_MAJOR, 1),
- NULL, "dgap_downld");
- dgap_Major_Control_Registered = TRUE;
- }
-
- /*
- * Init any global tty stuff.
- */
- rc = dgap_tty_preinit();
-
- if (rc < 0) {
- APR(("tty preinit - not enough memory (%d)\n", rc));
- return(rc);
- }
-
- /* Start the poller */
- DGAP_LOCK(dgap_poll_lock, flags);
- init_timer(&dgap_poll_timer);
- dgap_poll_timer.function = dgap_poll_handler;
- dgap_poll_timer.data = 0;
- dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
- dgap_poll_timer.expires = dgap_poll_time;
- DGAP_UNLOCK(dgap_poll_lock, flags);
-
- add_timer(&dgap_poll_timer);
-
- dgap_driver_state = DRIVER_NEED_CONFIG_LOAD;
- }
-
- return (rc);
-}
-
-
-/*
- * Register pci driver, and return how many boards we have.
- */
-static int dgap_init_pci(void)
-{
- return pci_register_driver(&dgap_driver);
-}
-
-
-/* returns count (>= 0), or negative on error */
-static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- int rc;
-
- /* wake up and enable device */
- rc = pci_enable_device(pdev);
-
- if (rc < 0) {
- rc = -EIO;
- } else {
- rc = dgap_probe1(pdev, ent->driver_data);
- if (rc == 0) {
- dgap_NumBoards++;
- DPR_INIT(("Incrementing numboards to %d\n", dgap_NumBoards));
- }
- }
- return rc;
-}
-
-
-static int dgap_probe1(struct pci_dev *pdev, int card_type)
-{
- return dgap_found_board(pdev, card_type);
-}
-
-
-static void dgap_remove_one(struct pci_dev *dev)
-{
- /* Do Nothing */
-}
-
-
-/*
- * dgap_cleanup_module()
- *
- * Module unload. This is where it all ends.
- */
-void dgap_cleanup_module(void)
-{
- int i;
- ulong lock_flags;
-
- DGAP_LOCK(dgap_poll_lock, lock_flags);
- dgap_poll_stop = 1;
- DGAP_UNLOCK(dgap_poll_lock, lock_flags);
-
- /* Turn off poller right away. */
- del_timer_sync( &dgap_poll_timer);
-
- dgap_remove_driver_sysfiles(&dgap_driver);
-
-
- if (dgap_Major_Control_Registered) {
- device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
- device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 1));
- class_destroy(dgap_class);
- unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
- }
-
- kfree(dgap_config_buf);
-
- for (i = 0; i < dgap_NumBoards; ++i) {
- dgap_remove_ports_sysfiles(dgap_Board[i]);
- dgap_tty_uninit(dgap_Board[i]);
- dgap_cleanup_board(dgap_Board[i]);
- }
-
- dgap_tty_post_uninit();
-
-#if defined(DGAP_TRACER)
- /* last thing, make sure we release the tracebuffer */
- dgap_tracer_free();
-#endif
- if (dgap_NumBoards)
- pci_unregister_driver(&dgap_driver);
-}
-
-
-/*
- * dgap_cleanup_board()
- *
- * Free all the memory associated with a board
- */
-static void dgap_cleanup_board(struct board_t *brd)
-{
- int i = 0;
-
- if(!brd || brd->magic != DGAP_BOARD_MAGIC)
- return;
-
- if (brd->intr_used && brd->irq)
- free_irq(brd->irq, brd);
-
- tasklet_kill(&brd->helper_tasklet);
-
- if (brd->re_map_port) {
- release_mem_region(brd->membase + 0x200000, 0x200000);
- iounmap(brd->re_map_port);
- brd->re_map_port = NULL;
- }
-
- if (brd->re_map_membase) {
- release_mem_region(brd->membase, 0x200000);
- iounmap(brd->re_map_membase);
- brd->re_map_membase = NULL;
- }
-
- if (brd->msgbuf_head) {
- unsigned long flags;
-
- DGAP_LOCK(dgap_global_lock, flags);
- brd->msgbuf = NULL;
- printk("%s", brd->msgbuf_head);
- kfree(brd->msgbuf_head);
- brd->msgbuf_head = NULL;
- DGAP_UNLOCK(dgap_global_lock, flags);
- }
-
- /* Free all allocated channels structs */
- for (i = 0; i < MAXPORTS ; i++) {
- if (brd->channels[i]) {
- kfree(brd->channels[i]);
- brd->channels[i] = NULL;
- }
- }
-
- kfree(brd->flipbuf);
- kfree(brd->flipflagbuf);
-
- dgap_Board[brd->boardnum] = NULL;
-
- kfree(brd);
-}
-
-
-/*
- * dgap_found_board()
- *
- * A board has been found, init it.
- */
-static int dgap_found_board(struct pci_dev *pdev, int id)
-{
- struct board_t *brd;
- unsigned int pci_irq;
- int i = 0;
- unsigned long flags;
-
- /* get the board structure and prep it */
- brd = dgap_Board[dgap_NumBoards] =
- (struct board_t *) kzalloc(sizeof(struct board_t), GFP_KERNEL);
- if (!brd) {
- APR(("memory allocation for board structure failed\n"));
- return(-ENOMEM);
- }
-
- /* make a temporary message buffer for the boot messages */
- brd->msgbuf = brd->msgbuf_head =
- (char *) kzalloc(sizeof(char) * 8192, GFP_KERNEL);
- if(!brd->msgbuf) {
- kfree(brd);
- APR(("memory allocation for board msgbuf failed\n"));
- return(-ENOMEM);
- }
-
- /* store the info for the board we've found */
- brd->magic = DGAP_BOARD_MAGIC;
- brd->boardnum = dgap_NumBoards;
- brd->firstminor = 0;
- brd->vendor = dgap_pci_tbl[id].vendor;
- brd->device = dgap_pci_tbl[id].device;
- brd->pdev = pdev;
- brd->pci_bus = pdev->bus->number;
- brd->pci_slot = PCI_SLOT(pdev->devfn);
- brd->name = dgap_Ids[id].name;
- brd->maxports = dgap_Ids[id].maxports;
- brd->type = dgap_Ids[id].config_type;
- brd->dpatype = dgap_Ids[id].dpatype;
- brd->dpastatus = BD_NOFEP;
- init_waitqueue_head(&brd->state_wait);
-
- DGAP_SPINLOCK_INIT(brd->bd_lock);
-
- brd->state = BOARD_FOUND;
- brd->runwait = 0;
- brd->inhibit_poller = FALSE;
- brd->wait_for_bios = 0;
- brd->wait_for_fep = 0;
-
- for (i = 0; i < MAXPORTS; i++) {
- brd->channels[i] = NULL;
- }
-
- /* store which card & revision we have */
- pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
- pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
- pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
-
- pci_irq = pdev->irq;
- brd->irq = pci_irq;
-
- /* get the PCI Base Address Registers */
-
- /* Xr Jupiter and EPC use BAR 2 */
- if (brd->device == PCI_DEVICE_XRJ_DID || brd->device == PCI_DEVICE_EPCJ_DID) {
- brd->membase = pci_resource_start(pdev, 2);
- brd->membase_end = pci_resource_end(pdev, 2);
- }
- /* Everyone else uses BAR 0 */
- else {
- brd->membase = pci_resource_start(pdev, 0);
- brd->membase_end = pci_resource_end(pdev, 0);
- }
-
- if (!brd->membase) {
- APR(("card has no PCI IO resources, failing board.\n"));
- return -ENODEV;
- }
-
- if (brd->membase & 1)
- brd->membase &= ~3;
- else
- brd->membase &= ~15;
-
- /*
- * On the PCI boards, there is no IO space allocated
- * The I/O registers will be in the first 3 bytes of the
- * upper 2MB of the 4MB memory space. The board memory
- * will be mapped into the low 2MB of the 4MB memory space
- */
- brd->port = brd->membase + PCI_IO_OFFSET;
- brd->port_end = brd->port + PCI_IO_SIZE;
-
-
- /*
- * Special initialization for non-PLX boards
- */
- if (brd->device != PCI_DEVICE_XRJ_DID && brd->device != PCI_DEVICE_EPCJ_DID) {
- unsigned short cmd;
-
- pci_write_config_byte(pdev, 0x40, 0);
- pci_write_config_byte(pdev, 0x46, 0);
-
- /* Limit burst length to 2 doubleword transactions */
- pci_write_config_byte(pdev, 0x42, 1);
-
- /*
- * Enable IO and mem if not already done.
- * This was needed for support on Itanium.
- */
- pci_read_config_word(pdev, PCI_COMMAND, &cmd);
- cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
- pci_write_config_word(pdev, PCI_COMMAND, cmd);
- }
-
- /* init our poll helper tasklet */
- tasklet_init(&brd->helper_tasklet, dgap_poll_tasklet, (unsigned long) brd);
-
- /* Log the information about the board */
- dgap_mbuf(brd, DRVSTR": board %d: %s (rev %d), irq %d\n",
- dgap_NumBoards, brd->name, brd->rev, brd->irq);
-
- DPR_INIT(("dgap_scan(%d) - printing out the msgbuf\n", i));
- DGAP_LOCK(dgap_global_lock, flags);
- brd->msgbuf = NULL;
- printk("%s", brd->msgbuf_head);
- kfree(brd->msgbuf_head);
- brd->msgbuf_head = NULL;
- DGAP_UNLOCK(dgap_global_lock, flags);
-
- i = dgap_do_remap(brd);
- if (i)
- brd->state = BOARD_FAILED;
- else
- brd->state = NEED_RESET;
-
- return(0);
-}
-
-
-static int dgap_finalize_board_init(struct board_t *brd) {
-
- int rc;
-
- DPR_INIT(("dgap_finalize_board_init() - start\n"));
-
- if (!brd || brd->magic != DGAP_BOARD_MAGIC)
- return(-ENODEV);
-
- DPR_INIT(("dgap_finalize_board_init() - start #2\n"));
-
- brd->use_interrupts = dgap_config_get_useintr(brd);
-
- /*
- * Set up our interrupt handler if we are set to do interrupts.
- */
- if (brd->use_interrupts && brd->irq) {
-
- rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd);
-
- if (rc) {
- dgap_mbuf(brd, DRVSTR": Failed to hook IRQ %d. Board will work in poll mode.\n",
- brd->irq);
- brd->intr_used = 0;
- }
- else
- brd->intr_used = 1;
- } else {
- brd->intr_used = 0;
- }
-
- return(0);
-}
-
-
-/*
- * Remap PCI memory.
- */
-static int dgap_do_remap(struct board_t *brd)
-{
- if (!brd || brd->magic != DGAP_BOARD_MAGIC)
- return -ENXIO;
-
- if (!request_mem_region(brd->membase, 0x200000, "dgap")) {
- APR(("dgap: mem_region %lx already in use.\n", brd->membase));
- return -ENOMEM;
- }
-
- if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000, "dgap")) {
- APR(("dgap: mem_region IO %lx already in use.\n",
- brd->membase + PCI_IO_OFFSET));
- release_mem_region(brd->membase, 0x200000);
- return -ENOMEM;
- }
-
- brd->re_map_membase = ioremap(brd->membase, 0x200000);
- if (!brd->re_map_membase) {
- APR(("dgap: ioremap mem %lx cannot be mapped.\n", brd->membase));
- release_mem_region(brd->membase, 0x200000);
- release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
- return -ENOMEM;
- }
-
- brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
- if (!brd->re_map_port) {
- release_mem_region(brd->membase, 0x200000);
- release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
- iounmap(brd->re_map_membase);
- APR(("dgap: ioremap IO mem %lx cannot be mapped.\n",
- brd->membase + PCI_IO_OFFSET));
- return -ENOMEM;
- }
-
- DPR_INIT(("remapped io: 0x%p remapped mem: 0x%p\n",
- brd->re_map_port, brd->re_map_membase));
- return 0;
-}
-
-
-/*****************************************************************************
-*
-* Function:
-*
-* dgap_poll_handler
-*
-* Author:
-*
-* Scott H Kilau
-*
-* Parameters:
-*
-* dummy -- ignored
-*
-* Return Values:
-*
-* none
-*
-* Description:
-*
-* As each timer expires, it determines (a) whether the "transmit"
-* waiter needs to be woken up, and (b) whether the poller needs to
-* be rescheduled.
-*
-******************************************************************************/
-
-static void dgap_poll_handler(ulong dummy)
-{
- int i;
- struct board_t *brd;
- unsigned long lock_flags;
- unsigned long lock_flags2;
- ulong new_time;
-
- dgap_poll_counter++;
-
-
- /*
- * If driver needs the config file still,
- * keep trying to wake up the downloader to
- * send us the file.
- */
- if (dgap_driver_state == DRIVER_NEED_CONFIG_LOAD) {
- /*
- * Signal downloader, its got some work to do.
- */
- DGAP_LOCK(dgap_dl_lock, lock_flags2);
- if (dgap_dl_action != 1) {
- dgap_dl_action = 1;
- wake_up_interruptible(&dgap_dl_wait);
- }
- DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
- goto schedule_poller;
- }
- /*
- * Do not start the board state machine until
- * driver tells us its up and running, and has
- * everything it needs.
- */
- else if (dgap_driver_state != DRIVER_READY) {
- goto schedule_poller;
- }
-
- /*
- * If we have just 1 board, or the system is not SMP,
- * then use the typical old style poller.
- * Otherwise, use our new tasklet based poller, which should
- * speed things up for multiple boards.
- */
- if ( (dgap_NumBoards == 1) || (num_online_cpus() <= 1) ) {
- for (i = 0; i < dgap_NumBoards; i++) {
-
- brd = dgap_Board[i];
-
- if (brd->state == BOARD_FAILED) {
- continue;
- }
- if (!brd->intr_running) {
- /* Call the real board poller directly */
- dgap_poll_tasklet((unsigned long) brd);
- }
- }
- }
- else {
- /* Go thru each board, kicking off a tasklet for each if needed */
- for (i = 0; i < dgap_NumBoards; i++) {
- brd = dgap_Board[i];
-
- /*
- * Attempt to grab the board lock.
- *
- * If we can't get it, no big deal, the next poll will get it.
- * Basically, I just really don't want to spin in here, because I want
- * to kick off my tasklets as fast as I can, and then get out the poller.
- */
- if (!spin_trylock(&brd->bd_lock)) {
- continue;
- }
-
- /* If board is in a failed state, don't bother scheduling a tasklet */
- if (brd->state == BOARD_FAILED) {
- spin_unlock(&brd->bd_lock);
- continue;
- }
-
- /* Schedule a poll helper task */
- if (!brd->intr_running) {
- tasklet_schedule(&brd->helper_tasklet);
- }
-
- /*
- * Can't do DGAP_UNLOCK here, as we don't have
- * lock_flags because we did a trylock above.
- */
- spin_unlock(&brd->bd_lock);
- }
- }
-
-schedule_poller:
-
- /*
- * Schedule ourself back at the nominal wakeup interval.
- */
- DGAP_LOCK(dgap_poll_lock, lock_flags );
- dgap_poll_time += dgap_jiffies_from_ms(dgap_poll_tick);
-
- new_time = dgap_poll_time - jiffies;
-
- if ((ulong) new_time >= 2 * dgap_poll_tick) {
- dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
- }
-
- dgap_poll_timer.function = dgap_poll_handler;
- dgap_poll_timer.data = 0;
- dgap_poll_timer.expires = dgap_poll_time;
- DGAP_UNLOCK(dgap_poll_lock, lock_flags );
-
- if (!dgap_poll_stop)
- add_timer(&dgap_poll_timer);
-}
-
-
-
-
-/*
- * dgap_intr()
- *
- * Driver interrupt handler.
- */
-static irqreturn_t dgap_intr(int irq, void *voidbrd)
-{
- struct board_t *brd = (struct board_t *) voidbrd;
-
- if (!brd) {
- APR(("Received interrupt (%d) with null board associated\n", irq));
- return IRQ_NONE;
- }
-
- /*
- * Check to make sure its for us.
- */
- if (brd->magic != DGAP_BOARD_MAGIC) {
- APR(("Received interrupt (%d) with a board pointer that wasn't ours!\n", irq));
- return IRQ_NONE;
- }
-
- brd->intr_count++;
-
- /*
- * Schedule tasklet to run at a better time.
- */
- tasklet_schedule(&brd->helper_tasklet);
- return IRQ_HANDLED;
-}
-
-
-/*
- * dgap_init_globals()
- *
- * This is where we initialize the globals from the static insmod
- * configuration variables. These are declared near the head of
- * this file.
- */
-static void dgap_init_globals(void)
-{
- int i = 0;
-
- dgap_rawreadok = rawreadok;
- dgap_trcbuf_size = trcbuf_size;
- dgap_debug = debug;
-
- for (i = 0; i < MAXBOARDS; i++) {
- dgap_Board[i] = NULL;
- }
-
- init_timer( &dgap_poll_timer );
-
- init_waitqueue_head(&dgap_dl_wait);
- dgap_dl_action = 0;
-}
-
-
-/************************************************************************
- *
- * Utility functions
- *
- ************************************************************************/
-
-
-/*
- * dgap_mbuf()
- *
- * Used to print to the message buffer during board init.
- */
-static void dgap_mbuf(struct board_t *brd, const char *fmt, ...) {
- va_list ap;
- char buf[1024];
- int i;
- unsigned long flags;
- size_t length;
-
- DGAP_LOCK(dgap_global_lock, flags);
-
- /* Format buf using fmt and arguments contained in ap. */
- va_start(ap, fmt);
- i = vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
-
- DPR((buf));
-
- if (!brd || !brd->msgbuf) {
- printk("%s", buf);
- DGAP_UNLOCK(dgap_global_lock, flags);
- return;
- }
-
- length = strlen(buf) + 1;
- if (brd->msgbuf - brd->msgbuf_head < length)
- length = brd->msgbuf - brd->msgbuf_head;
- memcpy(brd->msgbuf, buf, length);
- brd->msgbuf += length;
-
- DGAP_UNLOCK(dgap_global_lock, flags);
-}
-
-
-/*
- * dgap_ms_sleep()
- *
- * Put the driver to sleep for x ms's
- *
- * Returns 0 if timed out, !0 (showing signal) if interrupted by a signal.
- */
-static int dgap_ms_sleep(ulong ms)
-{
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout((ms * HZ) / 1000);
- return (signal_pending(current));
-}
-
-
-
-/*
- * dgap_ioctl_name() : Returns a text version of each ioctl value.
- */
-static char *dgap_ioctl_name(int cmd)
-{
- switch(cmd) {
-
- case TCGETA: return("TCGETA");
- case TCGETS: return("TCGETS");
- case TCSETA: return("TCSETA");
- case TCSETS: return("TCSETS");
- case TCSETAW: return("TCSETAW");
- case TCSETSW: return("TCSETSW");
- case TCSETAF: return("TCSETAF");
- case TCSETSF: return("TCSETSF");
- case TCSBRK: return("TCSBRK");
- case TCXONC: return("TCXONC");
- case TCFLSH: return("TCFLSH");
- case TIOCGSID: return("TIOCGSID");
-
- case TIOCGETD: return("TIOCGETD");
- case TIOCSETD: return("TIOCSETD");
- case TIOCGWINSZ: return("TIOCGWINSZ");
- case TIOCSWINSZ: return("TIOCSWINSZ");
-
- case TIOCMGET: return("TIOCMGET");
- case TIOCMSET: return("TIOCMSET");
- case TIOCMBIS: return("TIOCMBIS");
- case TIOCMBIC: return("TIOCMBIC");
-
- /* from digi.h */
- case DIGI_SETA: return("DIGI_SETA");
- case DIGI_SETAW: return("DIGI_SETAW");
- case DIGI_SETAF: return("DIGI_SETAF");
- case DIGI_SETFLOW: return("DIGI_SETFLOW");
- case DIGI_SETAFLOW: return("DIGI_SETAFLOW");
- case DIGI_GETFLOW: return("DIGI_GETFLOW");
- case DIGI_GETAFLOW: return("DIGI_GETAFLOW");
- case DIGI_GETA: return("DIGI_GETA");
- case DIGI_GEDELAY: return("DIGI_GEDELAY");
- case DIGI_SEDELAY: return("DIGI_SEDELAY");
- case DIGI_GETCUSTOMBAUD: return("DIGI_GETCUSTOMBAUD");
- case DIGI_SETCUSTOMBAUD: return("DIGI_SETCUSTOMBAUD");
- case TIOCMODG: return("TIOCMODG");
- case TIOCMODS: return("TIOCMODS");
- case TIOCSDTR: return("TIOCSDTR");
- case TIOCCDTR: return("TIOCCDTR");
-
- default: return("unknown");
- }
-}
-
-/************************************************************************
- *
- * TTY Initialization/Cleanup Functions
- *
- ************************************************************************/
-
-/*
- * dgap_tty_preinit()
- *
- * Initialize any global tty related data before we download any boards.
- */
-static int dgap_tty_preinit(void)
-{
- unsigned long flags;
-
- DGAP_LOCK(dgap_global_lock, flags);
-
- /*
- * Allocate a buffer for doing the copy from user space to
- * kernel space in dgap_input(). We only use one buffer and
- * control access to it with a semaphore. If we are paging, we
- * are already in trouble so one buffer won't hurt much anyway.
- */
- dgap_TmpWriteBuf = kmalloc(WRITEBUFLEN, GFP_ATOMIC);
-
- if (!dgap_TmpWriteBuf) {
- DGAP_UNLOCK(dgap_global_lock, flags);
- DPR_INIT(("unable to allocate tmp write buf"));
- return (-ENOMEM);
- }
-
- DGAP_UNLOCK(dgap_global_lock, flags);
- return(0);
-}
-
-
-/*
- * dgap_tty_register()
- *
- * Init the tty subsystem for this board.
- */
-static int dgap_tty_register(struct board_t *brd)
-{
- int rc = 0;
-
- DPR_INIT(("tty_register start"));
-
- brd->SerialDriver = alloc_tty_driver(MAXPORTS);
-
- snprintf(brd->SerialName, MAXTTYNAMELEN, "tty_dgap_%d_", brd->boardnum);
- brd->SerialDriver->name = brd->SerialName;
- brd->SerialDriver->name_base = 0;
- brd->SerialDriver->major = 0;
- brd->SerialDriver->minor_start = 0;
- brd->SerialDriver->type = TTY_DRIVER_TYPE_SERIAL;
- brd->SerialDriver->subtype = SERIAL_TYPE_NORMAL;
- brd->SerialDriver->init_termios = DgapDefaultTermios;
- brd->SerialDriver->driver_name = DRVSTR;
- brd->SerialDriver->flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
-
- /* The kernel wants space to store pointers to tty_structs */
- brd->SerialDriver->ttys = kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
- if (!brd->SerialDriver->ttys)
- return(-ENOMEM);
-
- /*
- * Entry points for driver. Called by the kernel from
- * tty_io.c and n_tty.c.
- */
- tty_set_operations(brd->SerialDriver, &dgap_tty_ops);
-
- /*
- * If we're doing transparent print, we have to do all of the above
- * again, separately so we don't get the LD confused about what major
- * we are when we get into the dgap_tty_open() routine.
- */
- brd->PrintDriver = alloc_tty_driver(MAXPORTS);
-
- snprintf(brd->PrintName, MAXTTYNAMELEN, "pr_dgap_%d_", brd->boardnum);
- brd->PrintDriver->name = brd->PrintName;
- brd->PrintDriver->name_base = 0;
- brd->PrintDriver->major = 0;
- brd->PrintDriver->minor_start = 0;
- brd->PrintDriver->type = TTY_DRIVER_TYPE_SERIAL;
- brd->PrintDriver->subtype = SERIAL_TYPE_NORMAL;
- brd->PrintDriver->init_termios = DgapDefaultTermios;
- brd->PrintDriver->driver_name = DRVSTR;
- brd->PrintDriver->flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
-
- /* The kernel wants space to store pointers to tty_structs */
- brd->PrintDriver->ttys = kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
- if (!brd->PrintDriver->ttys)
- return(-ENOMEM);
-
- /*
- * Entry points for driver. Called by the kernel from
- * tty_io.c and n_tty.c.
- */
- tty_set_operations(brd->PrintDriver, &dgap_tty_ops);
-
- if (!brd->dgap_Major_Serial_Registered) {
- /* Register tty devices */
- rc = tty_register_driver(brd->SerialDriver);
- if (rc < 0) {
- APR(("Can't register tty device (%d)\n", rc));
- return(rc);
- }
- brd->dgap_Major_Serial_Registered = TRUE;
- dgap_BoardsByMajor[brd->SerialDriver->major] = brd;
- brd->dgap_Serial_Major = brd->SerialDriver->major;
- }
-
- if (!brd->dgap_Major_TransparentPrint_Registered) {
- /* Register Transparent Print devices */
- rc = tty_register_driver(brd->PrintDriver);
- if (rc < 0) {
- APR(("Can't register Transparent Print device (%d)\n", rc));
- return(rc);
- }
- brd->dgap_Major_TransparentPrint_Registered = TRUE;
- dgap_BoardsByMajor[brd->PrintDriver->major] = brd;
- brd->dgap_TransparentPrint_Major = brd->PrintDriver->major;
- }
-
- DPR_INIT(("DGAP REGISTER TTY: MAJORS: %d %d\n", brd->SerialDriver->major,
- brd->PrintDriver->major));
-
- return (rc);
-}
-
-
-/*
- * dgap_tty_init()
- *
- * Init the tty subsystem. Called once per board after board has been
- * downloaded and init'ed.
- */
-static int dgap_tty_init(struct board_t *brd)
-{
- int i;
- int tlw;
- uint true_count = 0;
- uchar *vaddr;
- uchar modem = 0;
- struct channel_t *ch;
- struct bs_t *bs;
- struct cm_t *cm;
-
- if (!brd)
- return (-ENXIO);
-
- DPR_INIT(("dgap_tty_init start\n"));
-
- /*
- * Initialize board structure elements.
- */
-
- vaddr = brd->re_map_membase;
- true_count = readw((vaddr + NCHAN));
-
- brd->nasync = dgap_config_get_number_of_ports(brd);
-
- if (!brd->nasync) {
- brd->nasync = brd->maxports;
- }
-
- if (brd->nasync > brd->maxports) {
- brd->nasync = brd->maxports;
- }
-
- if (true_count != brd->nasync) {
- if ((brd->type == PPCM) && (true_count == 64)) {
- APR(("***WARNING**** %s configured for %d ports, has %d ports.\nPlease make SURE the EBI cable running from the card\nto each EM module is plugged into EBI IN!\n",
- brd->name, brd->nasync, true_count));
- }
- else if ((brd->type == PPCM) && (true_count == 0)) {
- APR(("***WARNING**** %s configured for %d ports, has %d ports.\nPlease make SURE the EBI cable running from the card\nto each EM module is plugged into EBI IN!\n",
- brd->name, brd->nasync, true_count));
- }
- else {
- APR(("***WARNING**** %s configured for %d ports, has %d ports.\n",
- brd->name, brd->nasync, true_count));
- }
-
- brd->nasync = true_count;
-
- /* If no ports, don't bother going any further */
- if (!brd->nasync) {
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- return(-ENXIO);
- }
- }
-
- /*
- * Allocate channel memory that might not have been allocated
- * when the driver was first loaded.
- */
- for (i = 0; i < brd->nasync; i++) {
- if (!brd->channels[i]) {
- brd->channels[i] = kzalloc(sizeof(struct channel_t), GFP_ATOMIC);
- if (!brd->channels[i]) {
- DPR_CORE(("%s:%d Unable to allocate memory for channel struct\n",
- __FILE__, __LINE__));
- }
- }
- }
-
- ch = brd->channels[0];
- vaddr = brd->re_map_membase;
-
- bs = (struct bs_t *) ((ulong) vaddr + CHANBUF);
- cm = (struct cm_t *) ((ulong) vaddr + CMDBUF);
-
- brd->bd_bs = bs;
-
- /* Set up channel variables */
- for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) {
-
- if (!brd->channels[i])
- continue;
-
- DGAP_SPINLOCK_INIT(ch->ch_lock);
-
- /* Store all our magic numbers */
- ch->magic = DGAP_CHANNEL_MAGIC;
- ch->ch_tun.magic = DGAP_UNIT_MAGIC;
- ch->ch_tun.un_type = DGAP_SERIAL;
- ch->ch_tun.un_ch = ch;
- ch->ch_tun.un_dev = i;
-
- ch->ch_pun.magic = DGAP_UNIT_MAGIC;
- ch->ch_pun.un_type = DGAP_PRINT;
- ch->ch_pun.un_ch = ch;
- ch->ch_pun.un_dev = i;
-
- ch->ch_vaddr = vaddr;
- ch->ch_bs = bs;
- ch->ch_cm = cm;
- ch->ch_bd = brd;
- ch->ch_portnum = i;
- ch->ch_digi = dgap_digi_init;
-
- /*
- * Set up digi dsr and dcd bits based on altpin flag.
- */
- if (dgap_config_get_altpin(brd)) {
- ch->ch_dsr = DM_CD;
- ch->ch_cd = DM_DSR;
- ch->ch_digi.digi_flags |= DIGI_ALTPIN;
- }
- else {
- ch->ch_cd = DM_CD;
- ch->ch_dsr = DM_DSR;
- }
-
- ch->ch_taddr = vaddr + ((ch->ch_bs->tx_seg) << 4);
- ch->ch_raddr = vaddr + ((ch->ch_bs->rx_seg) << 4);
- ch->ch_tx_win = 0;
- ch->ch_rx_win = 0;
- ch->ch_tsize = readw(&(ch->ch_bs->tx_max)) + 1;
- ch->ch_rsize = readw(&(ch->ch_bs->rx_max)) + 1;
- ch->ch_tstart = 0;
- ch->ch_rstart = 0;
-
- /* .25 second delay */
- ch->ch_close_delay = 250;
-
- /*
- * Set queue water marks, interrupt mask,
- * and general tty parameters.
- */
- ch->ch_tlw = tlw = ch->ch_tsize >= 2000 ? ((ch->ch_tsize * 5) / 8) : ch->ch_tsize / 2;
-
- dgap_cmdw(ch, STLOW, tlw, 0);
-
- dgap_cmdw(ch, SRLOW, ch->ch_rsize / 2, 0);
-
- dgap_cmdw(ch, SRHIGH, 7 * ch->ch_rsize / 8, 0);
-
- ch->ch_mistat = readb(&(ch->ch_bs->m_stat));
-
- init_waitqueue_head(&ch->ch_flags_wait);
- init_waitqueue_head(&ch->ch_tun.un_flags_wait);
- init_waitqueue_head(&ch->ch_pun.un_flags_wait);
- init_waitqueue_head(&ch->ch_sniff_wait);
-
- /* Turn on all modem interrupts for now */
- modem = (DM_CD | DM_DSR | DM_CTS | DM_RI);
- writeb(modem, &(ch->ch_bs->m_int));
-
- /*
- * Set edelay to 0 if interrupts are turned on,
- * otherwise set edelay to the usual 100.
- */
- if (brd->intr_used)
- writew(0, &(ch->ch_bs->edelay));
- else
- writew(100, &(ch->ch_bs->edelay));
-
- writeb(1, &(ch->ch_bs->idata));
- }
-
-
- DPR_INIT(("dgap_tty_init finish\n"));
-
- return (0);
-}
-
-
-/*
- * dgap_tty_post_uninit()
- *
- * UnInitialize any global tty related data.
- */
-static void dgap_tty_post_uninit(void)
-{
- kfree(dgap_TmpWriteBuf);
- dgap_TmpWriteBuf = NULL;
-}
-
-
-/*
- * dgap_tty_uninit()
- *
- * Uninitialize the TTY portion of this driver. Free all memory and
- * resources.
- */
-static void dgap_tty_uninit(struct board_t *brd)
-{
- int i = 0;
-
- if (brd->dgap_Major_Serial_Registered) {
- dgap_BoardsByMajor[brd->SerialDriver->major] = NULL;
- brd->dgap_Serial_Major = 0;
- for (i = 0; i < brd->nasync; i++) {
- dgap_remove_tty_sysfs(brd->channels[i]->ch_tun.un_sysfs);
- tty_unregister_device(brd->SerialDriver, i);
- }
- tty_unregister_driver(brd->SerialDriver);
- kfree(brd->SerialDriver->ttys);
- brd->SerialDriver->ttys = NULL;
- put_tty_driver(brd->SerialDriver);
- brd->dgap_Major_Serial_Registered = FALSE;
- }
-
- if (brd->dgap_Major_TransparentPrint_Registered) {
- dgap_BoardsByMajor[brd->PrintDriver->major] = NULL;
- brd->dgap_TransparentPrint_Major = 0;
- for (i = 0; i < brd->nasync; i++) {
- dgap_remove_tty_sysfs(brd->channels[i]->ch_pun.un_sysfs);
- tty_unregister_device(brd->PrintDriver, i);
- }
- tty_unregister_driver(brd->PrintDriver);
- kfree(brd->PrintDriver->ttys);
- brd->PrintDriver->ttys = NULL;
- put_tty_driver(brd->PrintDriver);
- brd->dgap_Major_TransparentPrint_Registered = FALSE;
- }
-}
-
-
-#define TMPBUFLEN (1024)
-
-/*
- * dgap_sniff - Dump data out to the "sniff" buffer if the
- * proc sniff file is opened...
- */
-static void dgap_sniff_nowait_nolock(struct channel_t *ch, uchar *text, uchar *buf, int len)
-{
- struct timeval tv;
- int n;
- int r;
- int nbuf;
- int i;
- int tmpbuflen;
- char tmpbuf[TMPBUFLEN];
- char *p = tmpbuf;
- int too_much_data;
-
- /* Leave if sniff not open */
- if (!(ch->ch_sniff_flags & SNIFF_OPEN))
- return;
-
- do_gettimeofday(&tv);
-
- /* Create our header for data dump */
- p += sprintf(p, "<%ld %ld><%s><", tv.tv_sec, tv.tv_usec, text);
- tmpbuflen = p - tmpbuf;
-
- do {
- too_much_data = 0;
-
- for (i = 0; i < len && tmpbuflen < (TMPBUFLEN - 4); i++) {
- p += sprintf(p, "%02x ", *buf);
- buf++;
- tmpbuflen = p - tmpbuf;
- }
-
- if (tmpbuflen < (TMPBUFLEN - 4)) {
- if (i > 0)
- p += sprintf(p - 1, "%s\n", ">");
- else
- p += sprintf(p, "%s\n", ">");
- } else {
- too_much_data = 1;
- len -= i;
- }
-
- nbuf = strlen(tmpbuf);
- p = tmpbuf;
-
- /*
- * Loop while data remains.
- */
- while (nbuf > 0 && ch->ch_sniff_buf) {
- /*
- * Determine the amount of available space left in the
- * buffer. If there's none, wait until some appears.
- */
- n = (ch->ch_sniff_out - ch->ch_sniff_in - 1) & SNIFF_MASK;
-
- /*
- * If there is no space left to write to in our sniff buffer,
- * we have no choice but to drop the data.
- * We *cannot* sleep here waiting for space, because this
- * function was probably called by the interrupt/timer routines!
- */
- if (n == 0) {
- return;
- }
-
- /*
- * Copy as much data as will fit.
- */
-
- if (n > nbuf)
- n = nbuf;
-
- r = SNIFF_MAX - ch->ch_sniff_in;
-
- if (r <= n) {
- memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, r);
-
- n -= r;
- ch->ch_sniff_in = 0;
- p += r;
- nbuf -= r;
- }
-
- memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, n);
-
- ch->ch_sniff_in += n;
- p += n;
- nbuf -= n;
-
- /*
- * Wakeup any thread waiting for data
- */
- if (ch->ch_sniff_flags & SNIFF_WAIT_DATA) {
- ch->ch_sniff_flags &= ~SNIFF_WAIT_DATA;
- wake_up_interruptible(&ch->ch_sniff_wait);
- }
- }
-
- /*
- * If the user sent us too much data to push into our tmpbuf,
- * we need to keep looping around on all the data.
- */
- if (too_much_data) {
- p = tmpbuf;
- tmpbuflen = 0;
- }
-
- } while (too_much_data);
-}
-
-
-/*=======================================================================
- *
- * dgap_input - Process received data.
- *
- * ch - Pointer to channel structure.
- *
- *=======================================================================*/
-
-static void dgap_input(struct channel_t *ch)
-{
- struct board_t *bd;
- struct bs_t *bs;
- struct tty_struct *tp;
- struct tty_ldisc *ld;
- uint rmask;
- uint head;
- uint tail;
- int data_len;
- ulong lock_flags;
- ulong lock_flags2;
- int flip_len;
- int len = 0;
- int n = 0;
- uchar *buf;
- uchar tmpchar;
- int s = 0;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- tp = ch->ch_tun.un_tty;
-
- bs = ch->ch_bs;
- if (!bs) {
- return;
- }
-
- bd = ch->ch_bd;
- if(!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_READ(("dgap_input start\n"));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- /*
- * Figure the number of characters in the buffer.
- * Exit immediately if none.
- */
-
- rmask = ch->ch_rsize - 1;
-
- head = readw(&(bs->rx_head));
- head &= rmask;
- tail = readw(&(bs->rx_tail));
- tail &= rmask;
-
- data_len = (head - tail) & rmask;
-
- if (data_len == 0) {
- writeb(1, &(bs->idata));
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- DPR_READ(("No data on port %d\n", ch->ch_portnum));
- return;
- }
-
- /*
- * If the device is not open, or CREAD is off, flush
- * input data and return immediately.
- */
- if ((bd->state != BOARD_READY) || !tp || (tp->magic != TTY_MAGIC) ||
- !(ch->ch_tun.un_flags & UN_ISOPEN) || !(tp->termios.c_cflag & CREAD) ||
- (ch->ch_tun.un_flags & UN_CLOSING)) {
-
- DPR_READ(("input. dropping %d bytes on port %d...\n", data_len, ch->ch_portnum));
- DPR_READ(("input. tp: %p tp->magic: %x MAGIC:%x ch flags: %x\n",
- tp, tp ? tp->magic : 0, TTY_MAGIC, ch->ch_tun.un_flags));
- writew(head, &(bs->rx_tail));
- writeb(1, &(bs->idata));
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return;
- }
-
- /*
- * If we are throttled, simply don't read any data.
- */
- if (ch->ch_flags & CH_RXBLOCK) {
- writeb(1, &(bs->idata));
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- DPR_READ(("Port %d throttled, not reading any data. head: %x tail: %x\n",
- ch->ch_portnum, head, tail));
- return;
- }
-
- /*
- * Ignore oruns.
- */
- tmpchar = readb(&(bs->orun));
- if (tmpchar) {
- ch->ch_err_overrun++;
- writeb(0, &(bs->orun));
- }
-
- DPR_READ(("dgap_input start 2\n"));
-
- /* Decide how much data we can send into the tty layer */
- flip_len = TTY_FLIPBUF_SIZE;
-
- /* Chop down the length, if needed */
- len = min(data_len, flip_len);
- len = min(len, (N_TTY_BUF_SIZE - 1));
-
- ld = tty_ldisc_ref(tp);
-
-#ifdef TTY_DONT_FLIP
- /*
- * If the DONT_FLIP flag is on, don't flush our buffer, and act
- * like the ld doesn't have any space to put the data right now.
- */
- if (test_bit(TTY_DONT_FLIP, &tp->flags))
- len = 0;
-#endif
-
- /*
- * If we were unable to get a reference to the ld,
- * don't flush our buffer, and act like the ld doesn't
- * have any space to put the data right now.
- */
- if (!ld) {
- len = 0;
- } else {
- /*
- * If ld doesn't have a pointer to a receive_buf function,
- * flush the data, then act like the ld doesn't have any
- * space to put the data right now.
- */
- if (!ld->ops->receive_buf) {
- writew(head, &(bs->rx_tail));
- len = 0;
- }
- }
-
- if (len <= 0) {
- writeb(1, &(bs->idata));
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- DPR_READ(("dgap_input 1 - finish\n"));
- if (ld)
- tty_ldisc_deref(ld);
- return;
- }
-
- buf = ch->ch_bd->flipbuf;
- n = len;
-
- /*
- * n now contains the most amount of data we can copy,
- * bounded either by our buffer size or the amount
- * of data the card actually has pending...
- */
- while (n) {
-
- s = ((head >= tail) ? head : ch->ch_rsize) - tail;
- s = min(s, n);
-
- if (s <= 0)
- break;
-
- memcpy_fromio(buf, (char *) ch->ch_raddr + tail, s);
- dgap_sniff_nowait_nolock(ch, "USER READ", buf, s);
-
- tail += s;
- buf += s;
-
- n -= s;
- /* Flip queue if needed */
- tail &= rmask;
- }
-
- writew(tail, &(bs->rx_tail));
- writeb(1, &(bs->idata));
- ch->ch_rxcount += len;
-
- /*
- * If we are completely raw, we don't need to go through a lot
- * of the tty layers that exist.
- * In this case, we take the shortest and fastest route we
- * can to relay the data to the user.
- *
- * On the other hand, if we are not raw, we need to go through
- * the tty layer, which has its API more well defined.
- */
- if (I_PARMRK(tp) || I_BRKINT(tp) || I_INPCK(tp)) {
- dgap_parity_scan(ch, ch->ch_bd->flipbuf, ch->ch_bd->flipflagbuf, &len);
-
- len = tty_buffer_request_room(tp->port, len);
- tty_insert_flip_string_flags(tp->port, ch->ch_bd->flipbuf,
- ch->ch_bd->flipflagbuf, len);
- }
- else {
- len = tty_buffer_request_room(tp->port, len);
- tty_insert_flip_string(tp->port, ch->ch_bd->flipbuf, len);
- }
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- /* Tell the tty layer its okay to "eat" the data now */
- tty_flip_buffer_push(tp->port);
-
- if (ld)
- tty_ldisc_deref(ld);
-
- DPR_READ(("dgap_input - finish\n"));
-}
-
-
-/************************************************************************
- * Determines when CARRIER changes state and takes appropriate
- * action.
- ************************************************************************/
-static void dgap_carrier(struct channel_t *ch)
-{
- struct board_t *bd;
-
- int virt_carrier = 0;
- int phys_carrier = 0;
-
- DPR_CARR(("dgap_carrier called...\n"));
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
-
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- /* Make sure altpin is always set correctly */
- if (ch->ch_digi.digi_flags & DIGI_ALTPIN) {
- ch->ch_dsr = DM_CD;
- ch->ch_cd = DM_DSR;
- }
- else {
- ch->ch_dsr = DM_DSR;
- ch->ch_cd = DM_CD;
- }
-
- if (ch->ch_mistat & D_CD(ch)) {
- DPR_CARR(("mistat: %x D_CD: %x\n", ch->ch_mistat, D_CD(ch)));
- phys_carrier = 1;
- }
-
- if (ch->ch_digi.digi_flags & DIGI_FORCEDCD) {
- virt_carrier = 1;
- }
-
- if (ch->ch_c_cflag & CLOCAL) {
- virt_carrier = 1;
- }
-
-
- DPR_CARR(("DCD: physical: %d virt: %d\n", phys_carrier, virt_carrier));
-
- /*
- * Test for a VIRTUAL carrier transition to HIGH.
- */
- if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) {
-
- /*
- * When carrier rises, wake any threads waiting
- * for carrier in the open routine.
- */
-
- DPR_CARR(("carrier: virt DCD rose\n"));
-
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
- }
-
- /*
- * Test for a PHYSICAL carrier transition to HIGH.
- */
- if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) {
-
- /*
- * When carrier rises, wake any threads waiting
- * for carrier in the open routine.
- */
-
- DPR_CARR(("carrier: physical DCD rose\n"));
-
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
- }
-
- /*
- * Test for a PHYSICAL transition to low, so long as we aren't
- * currently ignoring physical transitions (which is what "virtual
- * carrier" indicates).
- *
- * The transition of the virtual carrier to low really doesn't
- * matter... it really only means "ignore carrier state", not
- * "make pretend that carrier is there".
- */
- if ((virt_carrier == 0) && ((ch->ch_flags & CH_CD) != 0) &&
- (phys_carrier == 0))
- {
-
- /*
- * When carrier drops:
- *
- * Drop carrier on all open units.
- *
- * Flush queues, waking up any task waiting in the
- * line discipline.
- *
- * Send a hangup to the control terminal.
- *
- * Enable all select calls.
- */
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
-
- if (ch->ch_tun.un_open_count > 0) {
- DPR_CARR(("Sending tty hangup\n"));
- tty_hangup(ch->ch_tun.un_tty);
- }
-
- if (ch->ch_pun.un_open_count > 0) {
- DPR_CARR(("Sending pr hangup\n"));
- tty_hangup(ch->ch_pun.un_tty);
- }
- }
-
- /*
- * Make sure that our cached values reflect the current reality.
- */
- if (virt_carrier == 1)
- ch->ch_flags |= CH_FCAR;
- else
- ch->ch_flags &= ~CH_FCAR;
-
- if (phys_carrier == 1)
- ch->ch_flags |= CH_CD;
- else
- ch->ch_flags &= ~CH_CD;
-}
-
-
-/************************************************************************
- *
- * TTY Entry points and helper functions
- *
- ************************************************************************/
-
-/*
- * dgap_tty_open()
- *
- */
-static int dgap_tty_open(struct tty_struct *tty, struct file *file)
-{
- struct board_t *brd;
- struct channel_t *ch;
- struct un_t *un;
- struct bs_t *bs;
- uint major = 0;
- uint minor = 0;
- int rc = 0;
- ulong lock_flags;
- ulong lock_flags2;
- u16 head;
-
- rc = 0;
-
- major = MAJOR(tty_devnum(tty));
- minor = MINOR(tty_devnum(tty));
-
- if (major > 255) {
- return -ENXIO;
- }
-
- /* Get board pointer from our array of majors we have allocated */
- brd = dgap_BoardsByMajor[major];
- if (!brd) {
- return -ENXIO;
- }
-
- /*
- * If board is not yet up to a state of READY, go to
- * sleep waiting for it to happen or they cancel the open.
- */
- rc = wait_event_interruptible(brd->state_wait,
- (brd->state & BOARD_READY));
-
- if (rc) {
- return rc;
- }
-
- DGAP_LOCK(brd->bd_lock, lock_flags);
-
- /* The wait above should guarantee this cannot happen */
- if (brd->state != BOARD_READY) {
- DGAP_UNLOCK(brd->bd_lock, lock_flags);
- return -ENXIO;
- }
-
- /* If opened device is greater than our number of ports, bail. */
- if (MINOR(tty_devnum(tty)) > brd->nasync) {
- DGAP_UNLOCK(brd->bd_lock, lock_flags);
- return -ENXIO;
- }
-
- ch = brd->channels[minor];
- if (!ch) {
- DGAP_UNLOCK(brd->bd_lock, lock_flags);
- return -ENXIO;
- }
-
- /* Grab channel lock */
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- /* Figure out our type */
- if (major == brd->dgap_Serial_Major) {
- un = &brd->channels[minor]->ch_tun;
- un->un_type = DGAP_SERIAL;
- }
- else if (major == brd->dgap_TransparentPrint_Major) {
- un = &brd->channels[minor]->ch_pun;
- un->un_type = DGAP_PRINT;
- }
- else {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(brd->bd_lock, lock_flags);
- DPR_OPEN(("%d Unknown TYPE!\n", __LINE__));
- return -ENXIO;
- }
-
- /* Store our unit into driver_data, so we always have it available. */
- tty->driver_data = un;
-
- DPR_OPEN(("Open called. MAJOR: %d MINOR:%d unit: %p NAME: %s\n",
- MAJOR(tty_devnum(tty)), MINOR(tty_devnum(tty)), un, brd->name));
-
- /*
- * Error if channel info pointer is NULL.
- */
- bs = ch->ch_bs;
- if (!bs) {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(brd->bd_lock, lock_flags);
- DPR_OPEN(("%d BS is 0!\n", __LINE__));
- return -ENXIO;
- }
-
- DPR_OPEN(("%d: tflag=%x pflag=%x\n", __LINE__, ch->ch_tun.un_flags, ch->ch_pun.un_flags));
-
- /*
- * Initialize tty's
- */
- if (!(un->un_flags & UN_ISOPEN)) {
- /* Store important variables. */
- un->un_tty = tty;
-
- /* Maybe do something here to the TTY struct as well? */
- }
-
- /*
- * Initialize if neither terminal or printer is open.
- */
- if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
-
- DPR_OPEN(("dgap_open: initializing channel in open...\n"));
-
- ch->ch_mforce = 0;
- ch->ch_mval = 0;
-
- /*
- * Flush input queue.
- */
- head = readw(&(bs->rx_head));
- writew(head, &(bs->rx_tail));
-
- ch->ch_flags = 0;
- ch->pscan_state = 0;
- ch->pscan_savechar = 0;
-
- ch->ch_c_cflag = tty->termios.c_cflag;
- ch->ch_c_iflag = tty->termios.c_iflag;
- ch->ch_c_oflag = tty->termios.c_oflag;
- ch->ch_c_lflag = tty->termios.c_lflag;
- ch->ch_startc = tty->termios.c_cc[VSTART];
- ch->ch_stopc = tty->termios.c_cc[VSTOP];
-
- /* TODO: flush our TTY struct here? */
- }
-
- dgap_carrier(ch);
- /*
- * Run param in case we changed anything
- */
- dgap_param(tty);
-
- /*
- * follow protocol for opening port
- */
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(brd->bd_lock, lock_flags);
-
- rc = dgap_block_til_ready(tty, file, ch);
-
- if (!un->un_tty) {
- return -ENODEV;
- }
-
- if (rc) {
- DPR_OPEN(("dgap_tty_open returning after dgap_block_til_ready "
- "with %d\n", rc));
- }
-
- /* No going back now, increment our unit and channel counters */
- DGAP_LOCK(ch->ch_lock, lock_flags);
- ch->ch_open_count++;
- un->un_open_count++;
- un->un_flags |= (UN_ISOPEN);
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- DPR_OPEN(("dgap_tty_open finished\n"));
- return (rc);
-}
-
-
-/*
- * dgap_block_til_ready()
- *
- * Wait for DCD, if needed.
- */
-static int dgap_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch)
-{
- int retval = 0;
- struct un_t *un = NULL;
- ulong lock_flags;
- uint old_flags = 0;
- int sleep_on_un_flags = 0;
-
- if (!tty || tty->magic != TTY_MAGIC || !file || !ch || ch->magic != DGAP_CHANNEL_MAGIC) {
- return (-ENXIO);
- }
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC) {
- return (-ENXIO);
- }
-
- DPR_OPEN(("dgap_block_til_ready - before block.\n"));
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- ch->ch_wopen++;
-
- /* Loop forever */
- while (1) {
-
- sleep_on_un_flags = 0;
-
- /*
- * If board has failed somehow during our sleep, bail with error.
- */
- if (ch->ch_bd->state == BOARD_FAILED) {
- retval = -ENXIO;
- break;
- }
-
- /* If tty was hung up, break out of loop and set error. */
- if (tty_hung_up_p(file)) {
- retval = -EAGAIN;
- break;
- }
-
- /*
- * If either unit is in the middle of the fragile part of close,
- * we just cannot touch the channel safely.
- * Go back to sleep, knowing that when the channel can be
- * touched safely, the close routine will signal the
- * ch_wait_flags to wake us back up.
- */
- if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_CLOSING)) {
-
- /*
- * Our conditions to leave cleanly and happily:
- * 1) NONBLOCKING on the tty is set.
- * 2) CLOCAL is set.
- * 3) DCD (fake or real) is active.
- */
-
- if (file->f_flags & O_NONBLOCK) {
- break;
- }
-
- if (tty->flags & (1 << TTY_IO_ERROR)) {
- break;
- }
-
- if (ch->ch_flags & CH_CD) {
- DPR_OPEN(("%d: ch_flags: %x\n", __LINE__, ch->ch_flags));
- break;
- }
-
- if (ch->ch_flags & CH_FCAR) {
- DPR_OPEN(("%d: ch_flags: %x\n", __LINE__, ch->ch_flags));
- break;
- }
- }
- else {
- sleep_on_un_flags = 1;
- }
-
- /*
- * If there is a signal pending, the user probably
- * interrupted (ctrl-c) us.
- * Leave loop with error set.
- */
- if (signal_pending(current)) {
- DPR_OPEN(("%d: signal pending...\n", __LINE__));
- retval = -ERESTARTSYS;
- break;
- }
-
- DPR_OPEN(("dgap_block_til_ready - blocking.\n"));
-
- /*
- * Store the flags before we let go of channel lock
- */
- if (sleep_on_un_flags)
- old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags;
- else
- old_flags = ch->ch_flags;
-
- /*
- * Let go of channel lock before calling schedule.
- * Our poller will get any FEP events and wake us up when DCD
- * eventually goes active.
- */
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- DPR_OPEN(("Going to sleep on %s flags...\n",
- (sleep_on_un_flags ? "un" : "ch")));
-
- /*
- * Wait for something in the flags to change from the current value.
- */
- if (sleep_on_un_flags) {
- retval = wait_event_interruptible(un->un_flags_wait,
- (old_flags != (ch->ch_tun.un_flags | ch->ch_pun.un_flags)));
- }
- else {
- retval = wait_event_interruptible(ch->ch_flags_wait,
- (old_flags != ch->ch_flags));
- }
-
- DPR_OPEN(("After sleep... retval: %x\n", retval));
-
- /*
- * We got woken up for some reason.
- * Before looping around, grab our channel lock.
- */
- DGAP_LOCK(ch->ch_lock, lock_flags);
- }
-
- ch->ch_wopen--;
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- DPR_OPEN(("dgap_block_til_ready - after blocking.\n"));
-
- if (retval) {
- DPR_OPEN(("dgap_block_til_ready - done. error. retval: %x\n", retval));
- return(retval);
- }
-
- DPR_OPEN(("dgap_block_til_ready - done no error. jiffies: %lu\n", jiffies));
-
- return(0);
-}
-
-
-/*
- * dgap_tty_hangup()
- *
- * Hangup the port. Like a close, but don't wait for output to drain.
- */
-static void dgap_tty_hangup(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_CLOSE(("dgap_hangup called. ch->ch_open_count: %d un->un_open_count: %d\n",
- ch->ch_open_count, un->un_open_count));
-
- /* flush the transmit queues */
- dgap_tty_flush_buffer(tty);
-
- DPR_CLOSE(("dgap_hangup finished. ch->ch_open_count: %d un->un_open_count: %d\n",
- ch->ch_open_count, un->un_open_count));
-}
-
-
-
-/*
- * dgap_tty_close()
- *
- */
-static void dgap_tty_close(struct tty_struct *tty, struct file *file)
-{
- struct ktermios *ts;
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- int rc = 0;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- ts = &tty->termios;
-
- DPR_CLOSE(("Close called\n"));
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- /*
- * Determine if this is the last close or not - and if we agree about
- * which type of close it is with the Line Discipline
- */
- if ((tty->count == 1) && (un->un_open_count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. un_open_count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- APR(("tty->count is 1, un open count is %d\n", un->un_open_count));
- un->un_open_count = 1;
- }
-
- if (--un->un_open_count < 0) {
- APR(("bad serial port open count of %d\n", un->un_open_count));
- un->un_open_count = 0;
- }
-
- ch->ch_open_count--;
-
- if (ch->ch_open_count && un->un_open_count) {
- DPR_CLOSE(("dgap_tty_close: not last close ch: %d un:%d\n",
- ch->ch_open_count, un->un_open_count));
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
- return;
- }
-
- /* OK, its the last close on the unit */
- DPR_CLOSE(("dgap_tty_close - last close on unit procedures\n"));
-
- un->un_flags |= UN_CLOSING;
-
- tty->closing = 1;
-
- /*
- * Only officially close channel if count is 0 and
- * DIGI_PRINTER bit is not set.
- */
- if ((ch->ch_open_count == 0) && !(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
-
- ch->ch_flags &= ~(CH_RXBLOCK);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- /* wait for output to drain */
- /* This will also return if we take an interrupt */
-
- DPR_CLOSE(("Calling wait_for_drain\n"));
- rc = dgap_wait_for_drain(tty);
- DPR_CLOSE(("After calling wait_for_drain\n"));
-
- if (rc) {
- DPR_BASIC(("dgap_tty_close - bad return: %d ", rc));
- }
-
- dgap_tty_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- tty->closing = 0;
-
- /*
- * If we have HUPCL set, lower DTR and RTS
- */
- if (ch->ch_c_cflag & HUPCL ) {
- DPR_CLOSE(("Close. HUPCL set, dropping DTR/RTS\n"));
- ch->ch_mostat &= ~(D_RTS(ch)|D_DTR(ch));
- dgap_cmdb( ch, SMODEM, 0, D_DTR(ch)|D_RTS(ch), 0 );
-
- /*
- * Go to sleep to ensure RTS/DTR
- * have been dropped for modems to see it.
- */
- if (ch->ch_close_delay) {
- DPR_CLOSE(("Close. Sleeping for RTS/DTR drop\n"));
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
- dgap_ms_sleep(ch->ch_close_delay);
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- DPR_CLOSE(("Close. After sleeping for RTS/DTR drop\n"));
- }
- }
-
- ch->pscan_state = 0;
- ch->pscan_savechar = 0;
- ch->ch_baud_info = 0;
-
- }
-
- /*
- * turn off print device when closing print device.
- */
- if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON) ) {
- dgap_wmove(ch, ch->ch_digi.digi_offstr,
- (int) ch->ch_digi.digi_offlen);
- ch->ch_flags &= ~CH_PRON;
- }
-
- un->un_tty = NULL;
- un->un_flags &= ~(UN_ISOPEN | UN_CLOSING);
- tty->driver_data = NULL;
-
- DPR_CLOSE(("Close. Doing wakeups\n"));
- wake_up_interruptible(&ch->ch_flags_wait);
- wake_up_interruptible(&un->un_flags_wait);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- DPR_BASIC(("dgap_tty_close - complete\n"));
-}
-
-
-/*
- * dgap_tty_chars_in_buffer()
- *
- * Return number of characters that have not been transmitted yet.
- *
- * This routine is used by the line discipline to determine if there
- * is data waiting to be transmitted/drained/flushed or not.
- */
-static int dgap_tty_chars_in_buffer(struct tty_struct *tty)
-{
- struct board_t *bd = NULL;
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
- struct bs_t *bs = NULL;
- uchar tbusy;
- uint chars = 0;
- u16 thead, ttail, tmask, chead, ctail;
- ulong lock_flags = 0;
- ulong lock_flags2 = 0;
-
- if (tty == NULL)
- return(0);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
-
- bs = ch->ch_bs;
- if (!bs)
- return (0);
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- tmask = (ch->ch_tsize - 1);
-
- /* Get Transmit queue pointers */
- thead = readw(&(bs->tx_head)) & tmask;
- ttail = readw(&(bs->tx_tail)) & tmask;
-
- /* Get tbusy flag */
- tbusy = readb(&(bs->tbusy));
-
- /* Get Command queue pointers */
- chead = readw(&(ch->ch_cm->cm_head));
- ctail = readw(&(ch->ch_cm->cm_tail));
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- /*
- * The only way we know for sure if there is no pending
- * data left to be transferred, is if:
- * 1) Transmit head and tail are equal (empty).
- * 2) Command queue head and tail are equal (empty).
- * 3) The "TBUSY" flag is 0. (Transmitter not busy).
- */
-
- if ((ttail == thead) && (tbusy == 0) && (chead == ctail)) {
- chars = 0;
- }
- else {
- if (thead >= ttail)
- chars = thead - ttail;
- else
- chars = thead - ttail + ch->ch_tsize;
- /*
- * Fudge factor here.
- * If chars is zero, we know that the command queue had
- * something in it or tbusy was set. Because we cannot
- * be sure if there is still some data to be transmitted,
- * lets lie, and tell ld we have 1 byte left.
- */
- if (chars == 0) {
- /*
- * If TBUSY is still set, and our tx buffers are empty,
- * force the firmware to send me another wakeup after
- * TBUSY has been cleared.
- */
- if (tbusy != 0) {
- DGAP_LOCK(ch->ch_lock, lock_flags);
- un->un_flags |= UN_EMPTY;
- writeb(1, &(bs->iempty));
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
- }
- chars = 1;
- }
- }
-
- DPR_WRITE(("dgap_tty_chars_in_buffer. Port: %x - %d (head: %d tail: %d tsize: %d)\n",
- ch->ch_portnum, chars, thead, ttail, ch->ch_tsize));
- return(chars);
-}
-
-
-static int dgap_wait_for_drain(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- struct bs_t *bs;
- int ret = -EIO;
- uint count = 1;
- ulong lock_flags = 0;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return ret;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return ret;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return ret;
-
- bs = ch->ch_bs;
- if (!bs)
- return ret;
-
- ret = 0;
-
- DPR_DRAIN(("dgap_wait_for_drain start\n"));
-
- /* Loop until data is drained */
- while (count != 0) {
-
- count = dgap_tty_chars_in_buffer(tty);
-
- if (count == 0)
- break;
-
- /* Set flag waiting for drain */
- DGAP_LOCK(ch->ch_lock, lock_flags);
- un->un_flags |= UN_EMPTY;
- writeb(1, &(bs->iempty));
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- /* Go to sleep till we get woken up */
- ret = wait_event_interruptible(un->un_flags_wait, ((un->un_flags & UN_EMPTY) == 0));
- /* If ret is non-zero, user ctrl-c'ed us */
- if (ret) {
- break;
- }
- }
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
- un->un_flags &= ~(UN_EMPTY);
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- DPR_DRAIN(("dgap_wait_for_drain finish\n"));
- return (ret);
-}
-
-
-/*
- * dgap_maxcps_room
- *
- * Reduces bytes_available to the max number of characters
- * that can be sent currently given the maxcps value, and
- * returns the new bytes_available. This only affects printer
- * output.
- */
-static int dgap_maxcps_room(struct tty_struct *tty, int bytes_available)
-{
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
-
- if (tty == NULL)
- return (bytes_available);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (bytes_available);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (bytes_available);
-
- /*
- * If its not the Transparent print device, return
- * the full data amount.
- */
- if (un->un_type != DGAP_PRINT)
- return (bytes_available);
-
- if (ch->ch_digi.digi_maxcps > 0 && ch->ch_digi.digi_bufsize > 0 ) {
- int cps_limit = 0;
- unsigned long current_time = jiffies;
- unsigned long buffer_time = current_time +
- (HZ * ch->ch_digi.digi_bufsize) / ch->ch_digi.digi_maxcps;
-
- if (ch->ch_cpstime < current_time) {
- /* buffer is empty */
- ch->ch_cpstime = current_time; /* reset ch_cpstime */
- cps_limit = ch->ch_digi.digi_bufsize;
- }
- else if (ch->ch_cpstime < buffer_time) {
- /* still room in the buffer */
- cps_limit = ((buffer_time - ch->ch_cpstime) * ch->ch_digi.digi_maxcps) / HZ;
- }
- else {
- /* no room in the buffer */
- cps_limit = 0;
- }
-
- bytes_available = min(cps_limit, bytes_available);
- }
-
- return (bytes_available);
-}
-
-
-static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event)
-{
- struct channel_t *ch = NULL;
- struct bs_t *bs = NULL;
-
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
- bs = ch->ch_bs;
- if (!bs)
- return;
-
- if ((event & UN_LOW) != 0) {
- if ((un->un_flags & UN_LOW) == 0) {
- un->un_flags |= UN_LOW;
- writeb(1, &(bs->ilow));
- }
- }
- if ((event & UN_LOW) != 0) {
- if ((un->un_flags & UN_EMPTY) == 0) {
- un->un_flags |= UN_EMPTY;
- writeb(1, &(bs->iempty));
- }
- }
-}
-
-
-/*
- * dgap_tty_write_room()
- *
- * Return space available in Tx buffer
- */
-static int dgap_tty_write_room(struct tty_struct *tty)
-{
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
- struct bs_t *bs = NULL;
- u16 head, tail, tmask;
- int ret = 0;
- ulong lock_flags = 0;
-
- if (tty == NULL || dgap_TmpWriteBuf == NULL)
- return(0);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
-
- bs = ch->ch_bs;
- if (!bs)
- return (0);
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- tmask = ch->ch_tsize - 1;
- head = readw(&(bs->tx_head)) & tmask;
- tail = readw(&(bs->tx_tail)) & tmask;
-
- if ((ret = tail - head - 1) < 0)
- ret += ch->ch_tsize;
-
- /* Limit printer to maxcps */
- ret = dgap_maxcps_room(tty, ret);
-
- /*
- * If we are printer device, leave space for
- * possibly both the on and off strings.
- */
- if (un->un_type == DGAP_PRINT) {
- if (!(ch->ch_flags & CH_PRON))
- ret -= ch->ch_digi.digi_onlen;
- ret -= ch->ch_digi.digi_offlen;
- }
- else {
- if (ch->ch_flags & CH_PRON)
- ret -= ch->ch_digi.digi_offlen;
- }
-
- if (ret < 0)
- ret = 0;
-
- /*
- * Schedule FEP to wake us up if needed.
- *
- * TODO: This might be overkill...
- * Do we really need to schedule callbacks from the FEP
- * in every case? Can we get smarter based on ret?
- */
- dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- DPR_WRITE(("dgap_tty_write_room - %d tail: %d head: %d\n", ret, tail, head));
-
- return(ret);
-}
-
-
-/*
- * dgap_tty_put_char()
- *
- * Put a character into ch->ch_buf
- *
- * - used by the line discipline for OPOST processing
- */
-static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c)
-{
- /*
- * Simply call tty_write.
- */
- DPR_WRITE(("dgap_tty_put_char called\n"));
- dgap_tty_write(tty, &c, 1);
- return 1;
-}
-
-
-/*
- * dgap_tty_write()
- *
- * Take data from the user or kernel and send it out to the FEP.
- * In here exists all the Transparent Print magic as well.
- */
-static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
-{
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
- struct bs_t *bs = NULL;
- char *vaddr = NULL;
- u16 head, tail, tmask, remain;
- int bufcount = 0, n = 0;
- int orig_count = 0;
- ulong lock_flags;
- int from_user = 0;
-
- if (tty == NULL || dgap_TmpWriteBuf == NULL)
- return(0);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return(0);
-
- bs = ch->ch_bs;
- if (!bs)
- return(0);
-
- if (!count)
- return(0);
-
- DPR_WRITE(("dgap_tty_write: Port: %x tty=%p user=%d len=%d\n",
- ch->ch_portnum, tty, from_user, count));
-
- /*
- * Store original amount of characters passed in.
- * This helps to figure out if we should ask the FEP
- * to send us an event when it has more space available.
- */
- orig_count = count;
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- /* Get our space available for the channel from the board */
- tmask = ch->ch_tsize - 1;
- head = readw(&(bs->tx_head)) & tmask;
- tail = readw(&(bs->tx_tail)) & tmask;
-
- if ((bufcount = tail - head - 1) < 0)
- bufcount += ch->ch_tsize;
-
- DPR_WRITE(("%d: bufcount: %x count: %x tail: %x head: %x tmask: %x\n",
- __LINE__, bufcount, count, tail, head, tmask));
-
- /*
- * Limit printer output to maxcps overall, with bursts allowed
- * up to bufsize characters.
- */
- bufcount = dgap_maxcps_room(tty, bufcount);
-
- /*
- * Take minimum of what the user wants to send, and the
- * space available in the FEP buffer.
- */
- count = min(count, bufcount);
-
- /*
- * Bail if no space left.
- */
- if (count <= 0) {
- dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
- return(0);
- }
-
- /*
- * Output the printer ON string, if we are in terminal mode, but
- * need to be in printer mode.
- */
- if ((un->un_type == DGAP_PRINT) && !(ch->ch_flags & CH_PRON)) {
- dgap_wmove(ch, ch->ch_digi.digi_onstr,
- (int) ch->ch_digi.digi_onlen);
- head = readw(&(bs->tx_head)) & tmask;
- ch->ch_flags |= CH_PRON;
- }
-
- /*
- * On the other hand, output the printer OFF string, if we are
- * currently in printer mode, but need to output to the terminal.
- */
- if ((un->un_type != DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
- dgap_wmove(ch, ch->ch_digi.digi_offstr,
- (int) ch->ch_digi.digi_offlen);
- head = readw(&(bs->tx_head)) & tmask;
- ch->ch_flags &= ~CH_PRON;
- }
-
- /*
- * If there is nothing left to copy, or I can't handle any more data, leave.
- */
- if (count <= 0) {
- dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
- return(0);
- }
-
- if (from_user) {
-
- count = min(count, WRITEBUFLEN);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- /*
- * If data is coming from user space, copy it into a temporary
- * buffer so we don't get swapped out while doing the copy to
- * the board.
- */
- /* we're allowed to block if it's from_user */
- if (down_interruptible(&dgap_TmpWriteSem)) {
- return (-EINTR);
- }
-
- if (copy_from_user(dgap_TmpWriteBuf, (const uchar __user *) buf, count)) {
- up(&dgap_TmpWriteSem);
- printk("Write: Copy from user failed!\n");
- return -EFAULT;
- }
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- buf = dgap_TmpWriteBuf;
- }
-
- n = count;
-
- /*
- * If the write wraps over the top of the circular buffer,
- * move the portion up to the wrap point, and reset the
- * pointers to the bottom.
- */
- remain = ch->ch_tstart + ch->ch_tsize - head;
-
- if (n >= remain) {
- n -= remain;
- vaddr = ch->ch_taddr + head;
-
- memcpy_toio(vaddr, (uchar *) buf, remain);
- dgap_sniff_nowait_nolock(ch, "USER WRITE", (uchar *) buf, remain);
-
- head = ch->ch_tstart;
- buf += remain;
- }
-
- if (n > 0) {
-
- /*
- * Move rest of data.
- */
- vaddr = ch->ch_taddr + head;
- remain = n;
-
- memcpy_toio(vaddr, (uchar *) buf, remain);
- dgap_sniff_nowait_nolock(ch, "USER WRITE", (uchar *) buf, remain);
-
- head += remain;
-
- }
-
- if (count) {
- ch->ch_txcount += count;
- head &= tmask;
- writew(head, &(bs->tx_head));
- }
-
-
- dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
-
- /*
- * If this is the print device, and the
- * printer is still on, we need to turn it
- * off before going idle. If the buffer is
- * non-empty, wait until it goes empty.
- * Otherwise turn it off right now.
- */
- if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
- tail = readw(&(bs->tx_tail)) & tmask;
-
- if (tail != head) {
- un->un_flags |= UN_EMPTY;
- writeb(1, &(bs->iempty));
- }
- else {
- dgap_wmove(ch, ch->ch_digi.digi_offstr,
- (int) ch->ch_digi.digi_offlen);
- head = readw(&(bs->tx_head)) & tmask;
- ch->ch_flags &= ~CH_PRON;
- }
- }
-
- /* Update printer buffer empty time. */
- if ((un->un_type == DGAP_PRINT) && (ch->ch_digi.digi_maxcps > 0)
- && (ch->ch_digi.digi_bufsize > 0)) {
- ch->ch_cpstime += (HZ * count) / ch->ch_digi.digi_maxcps;
- }
-
- if (from_user) {
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
- up(&dgap_TmpWriteSem);
- }
- else {
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
- }
-
- DPR_WRITE(("Write finished - Write %d bytes of %d.\n", count, orig_count));
-
- return (count);
-}
-
-
-
-/*
- * Return modem signals to ld.
- */
-static int dgap_tty_tiocmget(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- int result = -EIO;
- uchar mstat = 0;
- ulong lock_flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return result;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return result;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return result;
-
- DPR_IOCTL(("dgap_tty_tiocmget start\n"));
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- mstat = readb(&(ch->ch_bs->m_stat));
- /* Append any outbound signals that might be pending... */
- mstat |= ch->ch_mostat;
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- result = 0;
-
- if (mstat & D_DTR(ch))
- result |= TIOCM_DTR;
- if (mstat & D_RTS(ch))
- result |= TIOCM_RTS;
- if (mstat & D_CTS(ch))
- result |= TIOCM_CTS;
- if (mstat & D_DSR(ch))
- result |= TIOCM_DSR;
- if (mstat & D_RI(ch))
- result |= TIOCM_RI;
- if (mstat & D_CD(ch))
- result |= TIOCM_CD;
-
- DPR_IOCTL(("dgap_tty_tiocmget finish\n"));
-
- return result;
-}
-
-
-/*
- * dgap_tty_tiocmset()
- *
- * Set modem signals, called by ld.
- */
-
-static int dgap_tty_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int ret = -EIO;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return ret;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return ret;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return ret;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return ret;
-
- DPR_IOCTL(("dgap_tty_tiocmset start\n"));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- if (set & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval |= D_RTS(ch);
- }
-
- if (set & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval |= D_DTR(ch);
- }
-
- if (clear & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval &= ~(D_RTS(ch));
- }
-
- if (clear & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval &= ~(D_DTR(ch));
- }
-
- dgap_param(tty);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_tiocmset finish\n"));
-
- return (0);
-}
-
-
-
-/*
- * dgap_tty_send_break()
- *
- * Send a Break, called by ld.
- */
-static int dgap_tty_send_break(struct tty_struct *tty, int msec)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int ret = -EIO;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return ret;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return ret;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return ret;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return ret;
-
- switch (msec) {
- case -1:
- msec = 0xFFFF;
- break;
- case 0:
- msec = 1;
- break;
- default:
- msec /= 10;
- break;
- }
-
- DPR_IOCTL(("dgap_tty_send_break start 1. %lx\n", jiffies));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-#if 0
- dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
-#endif
- dgap_cmdw(ch, SBREAK, (u16) msec, 0);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_send_break finish\n"));
-
- return (0);
-}
-
-
-
-
-/*
- * dgap_tty_wait_until_sent()
- *
- * wait until data has been transmitted, called by ld.
- */
-static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- int rc;
- rc = dgap_wait_for_drain(tty);
- if (rc) {
- DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
- return;
- }
- return;
-}
-
-
-
-/*
- * dgap_send_xchar()
- *
- * send a high priority character, called by ld.
- */
-static void dgap_tty_send_xchar(struct tty_struct *tty, char c)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_IOCTL(("dgap_tty_send_xchar start 1. %lx\n", jiffies));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- /*
- * This is technically what we should do.
- * However, the NIST tests specifically want
- * to see each XON or XOFF character that it
- * sends, so lets just send each character
- * by hand...
- */
-#if 0
- if (c == STOP_CHAR(tty)) {
- dgap_cmdw(ch, RPAUSE, 0, 0);
- }
- else if (c == START_CHAR(tty)) {
- dgap_cmdw(ch, RRESUME, 0, 0);
- }
- else {
- dgap_wmove(ch, &c, 1);
- }
-#else
- dgap_wmove(ch, &c, 1);
-#endif
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_send_xchar finish\n"));
-
- return;
-}
-
-
-
-
-/*
- * Return modem signals to ld.
- */
-static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value)
-{
- int result = 0;
- uchar mstat = 0;
- ulong lock_flags;
- int rc = 0;
-
- DPR_IOCTL(("dgap_get_modem_info start\n"));
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return(-ENXIO);
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
-
- mstat = readb(&(ch->ch_bs->m_stat));
- /* Append any outbound signals that might be pending... */
- mstat |= ch->ch_mostat;
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- result = 0;
-
- if (mstat & D_DTR(ch))
- result |= TIOCM_DTR;
- if (mstat & D_RTS(ch))
- result |= TIOCM_RTS;
- if (mstat & D_CTS(ch))
- result |= TIOCM_CTS;
- if (mstat & D_DSR(ch))
- result |= TIOCM_DSR;
- if (mstat & D_RI(ch))
- result |= TIOCM_RI;
- if (mstat & D_CD(ch))
- result |= TIOCM_CD;
-
- rc = put_user(result, value);
-
- DPR_IOCTL(("dgap_get_modem_info finish\n"));
- return(rc);
-}
-
-
-/*
- * dgap_set_modem_info()
- *
- * Set modem signals, called by ld.
- */
-static int dgap_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int ret = -ENXIO;
- unsigned int arg = 0;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return ret;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return ret;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return ret;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return ret;
-
- DPR_IOCTL(("dgap_set_modem_info() start\n"));
-
- ret = get_user(arg, value);
- if (ret) {
- DPR_IOCTL(("dgap_set_modem_info %d ret: %x. finished.\n", __LINE__, ret));
- return(ret);
- }
-
- DPR_IOCTL(("dgap_set_modem_info: command: %x arg: %x\n", command, arg));
-
- switch (command) {
- case TIOCMBIS:
- if (arg & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval |= D_RTS(ch);
- }
-
- if (arg & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval |= D_DTR(ch);
- }
-
- break;
-
- case TIOCMBIC:
- if (arg & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval &= ~(D_RTS(ch));
- }
-
- if (arg & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval &= ~(D_DTR(ch));
- }
-
- break;
-
- case TIOCMSET:
- ch->ch_mforce = D_DTR(ch)|D_RTS(ch);
-
- if (arg & TIOCM_RTS) {
- ch->ch_mval |= D_RTS(ch);
- }
- else {
- ch->ch_mval &= ~(D_RTS(ch));
- }
-
- if (arg & TIOCM_DTR) {
- ch->ch_mval |= (D_DTR(ch));
- }
- else {
- ch->ch_mval &= ~(D_DTR(ch));
- }
-
- break;
-
- default:
- return(-EINVAL);
- }
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- dgap_param(tty);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_set_modem_info finish\n"));
-
- return (0);
-}
-
-
-/*
- * dgap_tty_digigeta()
- *
- * Ioctl to get the information for ditty.
- *
- *
- *
- */
-static int dgap_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo)
-{
- struct channel_t *ch;
- struct un_t *un;
- struct digi_t tmp;
- ulong lock_flags;
-
- if (!retinfo)
- return (-EFAULT);
-
- if (!tty || tty->magic != TTY_MAGIC)
- return (-EFAULT);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (-EFAULT);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (-EFAULT);
-
- memset(&tmp, 0, sizeof(tmp));
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
- memcpy(&tmp, &ch->ch_digi, sizeof(tmp));
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return (-EFAULT);
-
- return (0);
-}
-
-
-/*
- * dgap_tty_digiseta()
- *
- * Ioctl to set the information for ditty.
- *
- *
- *
- */
-static int dgap_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- struct digi_t new_digi;
- ulong lock_flags = 0;
- unsigned long lock_flags2;
-
- DPR_IOCTL(("DIGI_SETA start\n"));
-
- if (!tty || tty->magic != TTY_MAGIC)
- return (-EFAULT);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (-EFAULT);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (-EFAULT);
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (-EFAULT);
-
- if (copy_from_user(&new_digi, new_info, sizeof(struct digi_t))) {
- DPR_IOCTL(("DIGI_SETA failed copy_from_user\n"));
- return(-EFAULT);
- }
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- memcpy(&ch->ch_digi, &new_digi, sizeof(struct digi_t));
-
- if (ch->ch_digi.digi_maxcps < 1)
- ch->ch_digi.digi_maxcps = 1;
-
- if (ch->ch_digi.digi_maxcps > 10000)
- ch->ch_digi.digi_maxcps = 10000;
-
- if (ch->ch_digi.digi_bufsize < 10)
- ch->ch_digi.digi_bufsize = 10;
-
- if (ch->ch_digi.digi_maxchar < 1)
- ch->ch_digi.digi_maxchar = 1;
-
- if (ch->ch_digi.digi_maxchar > ch->ch_digi.digi_bufsize)
- ch->ch_digi.digi_maxchar = ch->ch_digi.digi_bufsize;
-
- if (ch->ch_digi.digi_onlen > DIGI_PLEN)
- ch->ch_digi.digi_onlen = DIGI_PLEN;
-
- if (ch->ch_digi.digi_offlen > DIGI_PLEN)
- ch->ch_digi.digi_offlen = DIGI_PLEN;
-
- dgap_param(tty);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("DIGI_SETA finish\n"));
-
- return(0);
-}
-
-
-/*
- * dgap_tty_digigetedelay()
- *
- * Ioctl to get the current edelay setting.
- *
- *
- *
- */
-static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo)
-{
- struct channel_t *ch;
- struct un_t *un;
- int tmp;
- ulong lock_flags;
-
- if (!retinfo)
- return (-EFAULT);
-
- if (!tty || tty->magic != TTY_MAGIC)
- return (-EFAULT);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (-EFAULT);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (-EFAULT);
-
- memset(&tmp, 0, sizeof(tmp));
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
- tmp = readw(&(ch->ch_bs->edelay));
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return (-EFAULT);
-
- return (0);
-}
-
-
-/*
- * dgap_tty_digisetedelay()
- *
- * Ioctl to set the EDELAY setting
- *
- */
-static int dgap_tty_digisetedelay(struct tty_struct *tty, int __user *new_info)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int new_digi;
- ulong lock_flags;
- ulong lock_flags2;
-
- DPR_IOCTL(("DIGI_SETA start\n"));
-
- if (!tty || tty->magic != TTY_MAGIC)
- return (-EFAULT);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (-EFAULT);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (-EFAULT);
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (-EFAULT);
-
- if (copy_from_user(&new_digi, new_info, sizeof(int))) {
- DPR_IOCTL(("DIGI_SETEDELAY failed copy_from_user\n"));
- return(-EFAULT);
- }
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- writew((u16) new_digi, &(ch->ch_bs->edelay));
-
- dgap_param(tty);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("DIGI_SETA finish\n"));
-
- return(0);
-}
-
-
-/*
- * dgap_tty_digigetcustombaud()
- *
- * Ioctl to get the current custom baud rate setting.
- */
-static int dgap_tty_digigetcustombaud(struct tty_struct *tty, int __user *retinfo)
-{
- struct channel_t *ch;
- struct un_t *un;
- int tmp;
- ulong lock_flags;
-
- if (!retinfo)
- return (-EFAULT);
-
- if (!tty || tty->magic != TTY_MAGIC)
- return (-EFAULT);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (-EFAULT);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (-EFAULT);
-
- memset(&tmp, 0, sizeof(tmp));
-
- DGAP_LOCK(ch->ch_lock, lock_flags);
- tmp = dgap_get_custom_baud(ch);
- DGAP_UNLOCK(ch->ch_lock, lock_flags);
-
- DPR_IOCTL(("DIGI_GETCUSTOMBAUD. Returning %d\n", tmp));
-
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return (-EFAULT);
-
- return (0);
-}
-
-
-/*
- * dgap_tty_digisetcustombaud()
- *
- * Ioctl to set the custom baud rate setting
- */
-static int dgap_tty_digisetcustombaud(struct tty_struct *tty, int __user *new_info)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- uint new_rate;
- ulong lock_flags;
- ulong lock_flags2;
-
- DPR_IOCTL(("DIGI_SETCUSTOMBAUD start\n"));
-
- if (!tty || tty->magic != TTY_MAGIC)
- return (-EFAULT);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (-EFAULT);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (-EFAULT);
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (-EFAULT);
-
-
- if (copy_from_user(&new_rate, new_info, sizeof(unsigned int))) {
- DPR_IOCTL(("DIGI_SETCUSTOMBAUD failed copy_from_user\n"));
- return(-EFAULT);
- }
-
- if (bd->bd_flags & BD_FEP5PLUS) {
-
- DPR_IOCTL(("DIGI_SETCUSTOMBAUD. Setting %d\n", new_rate));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- ch->ch_custom_speed = new_rate;
-
- dgap_param(tty);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- }
-
- DPR_IOCTL(("DIGI_SETCUSTOMBAUD finish\n"));
-
- return(0);
-}
-
-
-/*
- * dgap_set_termios()
- */
-static void dgap_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long lock_flags;
- unsigned long lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- ch->ch_c_cflag = tty->termios.c_cflag;
- ch->ch_c_iflag = tty->termios.c_iflag;
- ch->ch_c_oflag = tty->termios.c_oflag;
- ch->ch_c_lflag = tty->termios.c_lflag;
- ch->ch_startc = tty->termios.c_cc[VSTART];
- ch->ch_stopc = tty->termios.c_cc[VSTOP];
-
- dgap_carrier(ch);
- dgap_param(tty);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-}
-
-
-static void dgap_tty_throttle(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_IOCTL(("dgap_tty_throttle start\n"));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- ch->ch_flags |= (CH_RXBLOCK);
-#if 1
- dgap_cmdw(ch, RPAUSE, 0, 0);
-#endif
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_throttle finish\n"));
-}
-
-
-static void dgap_tty_unthrottle(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_IOCTL(("dgap_tty_unthrottle start\n"));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- ch->ch_flags &= ~(CH_RXBLOCK);
-
-#if 1
- dgap_cmdw(ch, RRESUME, 0, 0);
-#endif
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_unthrottle finish\n"));
-}
-
-
-static void dgap_tty_start(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_IOCTL(("dgap_tty_start start\n"));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- dgap_cmdw(ch, RESUMETX, 0, 0);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_start finish\n"));
-}
-
-
-static void dgap_tty_stop(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_IOCTL(("dgap_tty_stop start\n"));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- dgap_cmdw(ch, PAUSETX, 0, 0);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_stop finish\n"));
-}
-
-
-/*
- * dgap_tty_flush_chars()
- *
- * Flush the cook buffer
- *
- * Note to self, and any other poor souls who venture here:
- *
- * flush in this case DOES NOT mean dispose of the data.
- * instead, it means "stop buffering and send it if you
- * haven't already." Just guess how I figured that out... SRW 2-Jun-98
- *
- * It is also always called in interrupt context - JAR 8-Sept-99
- */
-static void dgap_tty_flush_chars(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_IOCTL(("dgap_tty_flush_chars start\n"));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- /* TODO: Do something here */
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_flush_chars finish\n"));
-}
-
-
-
-/*
- * dgap_tty_flush_buffer()
- *
- * Flush Tx buffer (make in == out)
- */
-static void dgap_tty_flush_buffer(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
- u16 head = 0;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- DPR_IOCTL(("dgap_tty_flush_buffer on port: %d start\n", ch->ch_portnum));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- ch->ch_flags &= ~CH_STOP;
- head = readw(&(ch->ch_bs->tx_head));
- dgap_cmdw(ch, FLUSHTX, (u16) head, 0);
- dgap_cmdw(ch, RESUMETX, 0, 0);
- if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
- }
- if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_pun.un_flags_wait);
- }
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- if (waitqueue_active(&tty->write_wait))
- wake_up_interruptible(&tty->write_wait);
- tty_wakeup(tty);
-
- DPR_IOCTL(("dgap_tty_flush_buffer finish\n"));
-}
-
-
-
-/*****************************************************************************
- *
- * The IOCTL function and all of its helpers
- *
- *****************************************************************************/
-
-/*
- * dgap_tty_ioctl()
- *
- * The usual assortment of ioctl's
- */
-static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
- unsigned long arg)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int rc;
- u16 head = 0;
- ulong lock_flags = 0;
- ulong lock_flags2 = 0;
- void __user *uarg = (void __user *) arg;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return (-ENODEV);
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (-ENODEV);
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (-ENODEV);
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (-ENODEV);
-
- DPR_IOCTL(("dgap_tty_ioctl start on port %d - cmd %s (%x), arg %lx\n",
- ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- if (un->un_open_count <= 0) {
- DPR_BASIC(("dgap_tty_ioctl - unit not open.\n"));
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(-EIO);
- }
-
- switch (cmd) {
-
- /* Here are all the standard ioctl's that we MUST implement */
-
- case TCSBRK:
- /*
- * TCSBRK is SVID version: non-zero arg --> no break
- * this behaviour is exploited by tcdrain().
- *
- * According to POSIX.1 spec (7.2.2.1.2) breaks should be
- * between 0.25 and 0.5 seconds so we'll ask for something
- * in the middle: 0.375 seconds.
- */
- rc = tty_check_change(tty);
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- if (rc) {
- return(rc);
- }
-
- rc = dgap_wait_for_drain(tty);
-
- if (rc) {
- DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
- return(-EINTR);
- }
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- if(((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP)) {
- dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
- }
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
- ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
-
- return(0);
-
-
- case TCSBRKP:
- /* support for POSIX tcsendbreak()
-
- * According to POSIX.1 spec (7.2.2.1.2) breaks should be
- * between 0.25 and 0.5 seconds so we'll ask for something
- * in the middle: 0.375 seconds.
- */
- rc = tty_check_change(tty);
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- if (rc) {
- return(rc);
- }
-
- rc = dgap_wait_for_drain(tty);
- if (rc) {
- DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
- return(-EINTR);
- }
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
- ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
-
- return(0);
-
- case TIOCSBRK:
- /*
- * FEP5 doesn't support turning on a break unconditionally.
- * The FEP5 device will stop sending a break automatically
- * after the specified time value that was sent when turning on
- * the break.
- */
- rc = tty_check_change(tty);
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- if (rc) {
- return(rc);
- }
-
- rc = dgap_wait_for_drain(tty);
- if (rc) {
- DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
- return(-EINTR);
- }
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
- ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
-
- return 0;
-
- case TIOCCBRK:
- /*
- * FEP5 doesn't support turning off a break unconditionally.
- * The FEP5 device will stop sending a break automatically
- * after the specified time value that was sent when turning on
- * the break.
- */
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return 0;
-
- case TIOCGSOFTCAR:
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) arg);
- return(rc);
-
- case TIOCSSOFTCAR:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- rc = get_user(arg, (unsigned long __user *) arg);
- if (rc)
- return(rc);
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
- tty->termios.c_cflag = ((tty->termios.c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
- dgap_param(tty);
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- return(0);
-
- case TIOCMGET:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_get_modem_info(ch, uarg));
-
- case TIOCMBIS:
- case TIOCMBIC:
- case TIOCMSET:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_set_modem_info(tty, cmd, uarg));
-
- /*
- * Here are any additional ioctl's that we want to implement
- */
-
- case TCFLSH:
- /*
- * The linux tty driver doesn't have a flush
- * input routine for the driver, assuming all backed
- * up data is in the line disc. buffers. However,
- * we all know that's not the case. Here, we
- * act on the ioctl, but then lie and say we didn't
- * so the line discipline will process the flush
- * also.
- */
- rc = tty_check_change(tty);
- if (rc) {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(rc);
- }
-
- if ((arg == TCIFLUSH) || (arg == TCIOFLUSH)) {
- if (!(un->un_type == DGAP_PRINT)) {
- head = readw(&(ch->ch_bs->rx_head));
- writew(head, &(ch->ch_bs->rx_tail));
- writeb(0, &(ch->ch_bs->orun));
- }
- }
-
- if ((arg == TCOFLUSH) || (arg == TCIOFLUSH)) {
- ch->ch_flags &= ~CH_STOP;
- head = readw(&(ch->ch_bs->tx_head));
- dgap_cmdw(ch, FLUSHTX, (u16) head, 0 );
- dgap_cmdw(ch, RESUMETX, 0, 0);
- if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
- }
- if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_pun.un_flags_wait);
- }
- if (waitqueue_active(&tty->write_wait))
- wake_up_interruptible(&tty->write_wait);
-
- /* Can't hold any locks when calling tty_wakeup! */
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- tty_wakeup(tty);
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
- }
-
- /* pretend we didn't recognize this IOCTL */
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_ioctl (LINE:%d) finish on port %d - cmd %s (%x), arg %lx\n",
- __LINE__, ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
-
- return(-ENOIOCTLCMD);
-
- case TCSETSF:
- case TCSETSW:
- /*
- * The linux tty driver doesn't have a flush
- * input routine for the driver, assuming all backed
- * up data is in the line disc. buffers. However,
- * we all know that's not the case. Here, we
- * act on the ioctl, but then lie and say we didn't
- * so the line discipline will process the flush
- * also.
- */
- if (cmd == TCSETSF) {
- /* flush rx */
- ch->ch_flags &= ~CH_STOP;
- head = readw(&(ch->ch_bs->rx_head));
- writew(head, &(ch->ch_bs->rx_tail));
- }
-
- /* now wait for all the output to drain */
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- rc = dgap_wait_for_drain(tty);
- if (rc) {
- DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
- return(-EINTR);
- }
-
- DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n",
- ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
-
- /* pretend we didn't recognize this */
- return(-ENOIOCTLCMD);
-
- case TCSETAW:
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- rc = dgap_wait_for_drain(tty);
- if (rc) {
- DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
- return(-EINTR);
- }
-
- /* pretend we didn't recognize this */
- return(-ENOIOCTLCMD);
-
- case TCXONC:
- /*
- * The Linux Line Discipline (LD) would do this for us if we
- * let it, but we have the special firmware options to do this
- * the "right way" regardless of hardware or software flow
- * control so we'll do it outselves instead of letting the LD
- * do it.
- */
- rc = tty_check_change(tty);
- if (rc) {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(rc);
- }
-
- DPR_IOCTL(("dgap_ioctl - in TCXONC - %d\n", cmd));
- switch (arg) {
-
- case TCOON:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- dgap_tty_start(tty);
- return(0);
- case TCOOFF:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- dgap_tty_stop(tty);
- return(0);
- case TCION:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- /* Make the ld do it */
- return(-ENOIOCTLCMD);
- case TCIOFF:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- /* Make the ld do it */
- return(-ENOIOCTLCMD);
- default:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(-EINVAL);
- }
-
- case DIGI_GETA:
- /* get information for ditty */
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_tty_digigeta(tty, uarg));
-
- case DIGI_SETAW:
- case DIGI_SETAF:
-
- /* set information for ditty */
- if (cmd == (DIGI_SETAW)) {
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- rc = dgap_wait_for_drain(tty);
- if (rc) {
- DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
- return(-EINTR);
- }
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
- }
- else {
- tty_ldisc_flush(tty);
- }
- /* fall thru */
-
- case DIGI_SETA:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_tty_digiseta(tty, uarg));
-
- case DIGI_GEDELAY:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_tty_digigetedelay(tty, uarg));
-
- case DIGI_SEDELAY:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_tty_digisetedelay(tty, uarg));
-
- case DIGI_GETCUSTOMBAUD:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_tty_digigetcustombaud(tty, uarg));
-
- case DIGI_SETCUSTOMBAUD:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return(dgap_tty_digisetcustombaud(tty, uarg));
-
- case DIGI_RESET_PORT:
- dgap_firmware_reset_port(ch);
- dgap_param(tty);
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return 0;
-
- default:
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- DPR_IOCTL(("dgap_tty_ioctl - in default\n"));
- DPR_IOCTL(("dgap_tty_ioctl end - cmd %s (%x), arg %lx\n",
- dgap_ioctl_name(cmd), cmd, arg));
-
- return(-ENOIOCTLCMD);
- }
-}
-/*
- * Loads the dgap.conf config file from the user.
- */
-static void dgap_do_config_load(uchar __user *uaddr, int len)
-{
- int orig_len = len;
- char *to_addr;
- uchar __user *from_addr = uaddr;
- char buf[U2BSIZE];
- int n;
-
- to_addr = dgap_config_buf = kzalloc(len + 1, GFP_ATOMIC);
- if (!dgap_config_buf) {
- DPR_INIT(("dgap_do_config_load - unable to allocate memory for file\n"));
- dgap_driver_state = DRIVER_NEED_CONFIG_LOAD;
- return;
- }
-
- n = U2BSIZE;
- while (len) {
-
- if (n > len)
- n = len;
-
- if (copy_from_user((char *) &buf, from_addr, n) == -1 )
- return;
-
- /* Copy data from buffer to kernel memory */
- memcpy(to_addr, buf, n);
-
- /* increment counts */
- len -= n;
- to_addr += n;
- from_addr += n;
- n = U2BSIZE;
- }
-
- dgap_config_buf[orig_len] = '\0';
-
- to_addr = dgap_config_buf;
- dgap_parsefile(&to_addr, TRUE);
-
- DPR_INIT(("dgap_config_load() finish\n"));
-
- return;
-}
-
-
-static int dgap_after_config_loaded(void)
-{
- int i = 0;
- int rc = 0;
-
- /*
- * Register our ttys, now that we have the config loaded.
- */
- for (i = 0; i < dgap_NumBoards; ++i) {
-
- /*
- * Initialize KME waitqueues...
- */
- init_waitqueue_head(&(dgap_Board[i]->kme_wait));
-
- /*
- * allocate flip buffer for board.
- */
- dgap_Board[i]->flipbuf = kzalloc(MYFLIPLEN, GFP_ATOMIC);
- dgap_Board[i]->flipflagbuf = kzalloc(MYFLIPLEN, GFP_ATOMIC);
- }
-
- return rc;
-}
-
-
-
-/*=======================================================================
- *
- * usertoboard - copy from user space to board space.
- *
- *=======================================================================*/
-static int dgap_usertoboard(struct board_t *brd, char *to_addr, char __user *from_addr, int len)
-{
- char buf[U2BSIZE];
- int n = U2BSIZE;
-
- if (!brd || brd->magic != DGAP_BOARD_MAGIC)
- return -EFAULT;
-
- while (len) {
- if (n > len)
- n = len;
-
- if (copy_from_user((char *) &buf, from_addr, n) == -1 ) {
- return -EFAULT;
- }
-
- /* Copy data from buffer to card memory */
- memcpy_toio(to_addr, buf, n);
-
- /* increment counts */
- len -= n;
- to_addr += n;
- from_addr += n;
- n = U2BSIZE;
- }
- return 0;
-}
-
-
-/*
- * Copies the BIOS code from the user to the board,
- * and starts the BIOS running.
- */
-static void dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len)
-{
- uchar *addr;
- uint offset;
- int i;
-
- if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
- return;
-
- DPR_INIT(("dgap_do_bios_load() start\n"));
-
- addr = brd->re_map_membase;
-
- /*
- * clear POST area
- */
- for (i = 0; i < 16; i++)
- writeb(0, addr + POSTAREA + i);
-
- /*
- * Download bios
- */
- offset = 0x1000;
- if (dgap_usertoboard(brd, addr + offset, ubios, len) == -1 ) {
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- return;
- }
-
- writel(0x0bf00401, addr);
- writel(0, (addr + 4));
-
- /* Clear the reset, and change states. */
- writeb(FEPCLR, brd->re_map_port);
- brd->state = WAIT_BIOS_LOAD;
-}
-
-
-/*
- * Checks to see if the BIOS completed running on the card.
- */
-static void dgap_do_wait_for_bios(struct board_t *brd)
-{
- uchar *addr;
- u16 word;
-
- if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
- return;
-
- addr = brd->re_map_membase;
- word = readw(addr + POSTAREA);
-
- /* Check to see if BIOS thinks board is good. (GD). */
- if (word == *(u16 *) "GD") {
- DPR_INIT(("GOT GD in memory, moving states.\n"));
- brd->state = FINISHED_BIOS_LOAD;
- return;
- }
-
- /* Give up on board after too long of time taken */
- if (brd->wait_for_bios++ > 5000) {
- u16 err1 = readw(addr + SEQUENCE);
- u16 err2 = readw(addr + ERROR);
- APR(("***WARNING*** %s failed diagnostics. Error #(%x,%x).\n",
- brd->name, err1, err2));
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- }
-}
-
-
-/*
- * Copies the FEP code from the user to the board,
- * and starts the FEP running.
- */
-static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len)
-{
- uchar *addr;
- uint offset;
-
- if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
- return;
-
- addr = brd->re_map_membase;
-
- DPR_INIT(("dgap_do_fep_load() for board %s : start\n", brd->name));
-
- /*
- * Download FEP
- */
- offset = 0x1000;
- if (dgap_usertoboard(brd, addr + offset, ufep, len) == -1 ) {
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- return;
- }
-
- /*
- * If board is a concentrator product, we need to give
- * it its config string describing how the concentrators look.
- */
- if ((brd->type == PCX) || (brd->type == PEPC)) {
- uchar string[100];
- uchar *config, *xconfig;
- int i = 0;
-
- xconfig = dgap_create_config_string(brd, string);
-
- /* Write string to board memory */
- config = addr + CONFIG;
- for (; i < CONFIGSIZE; i++, config++, xconfig++) {
- writeb(*xconfig, config);
- if ((*xconfig & 0xff) == 0xff)
- break;
- }
- }
-
- writel(0xbfc01004, (addr + 0xc34));
- writel(0x3, (addr + 0xc30));
-
- /* change states. */
- brd->state = WAIT_FEP_LOAD;
-
- DPR_INIT(("dgap_do_fep_load() for board %s : finish\n", brd->name));
-
-}
-
-
-/*
- * Waits for the FEP to report thats its ready for us to use.
- */
-static void dgap_do_wait_for_fep(struct board_t *brd)
-{
- uchar *addr;
- u16 word;
-
- if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
- return;
-
- addr = brd->re_map_membase;
-
- DPR_INIT(("dgap_do_wait_for_fep() for board %s : start. addr: %p\n", brd->name, addr));
-
- word = readw(addr + FEPSTAT);
-
- /* Check to see if FEP is up and running now. */
- if (word == *(u16 *) "OS") {
- DPR_INIT(("GOT OS in memory for board %s, moving states.\n", brd->name));
- brd->state = FINISHED_FEP_LOAD;
-
- /*
- * Check to see if the board can support FEP5+ commands.
- */
- word = readw(addr + FEP5_PLUS);
- if (word == *(u16 *) "5A") {
- DPR_INIT(("GOT 5A in memory for board %s, board supports extended FEP5 commands.\n", brd->name));
- brd->bd_flags |= BD_FEP5PLUS;
- }
-
- return;
- }
-
- /* Give up on board after too long of time taken */
- if (brd->wait_for_fep++ > 5000) {
- u16 err1 = readw(addr + SEQUENCE);
- u16 err2 = readw(addr + ERROR);
- APR(("***WARNING*** FEPOS for %s not functioning. Error #(%x,%x).\n",
- brd->name, err1, err2));
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- }
-
- DPR_INIT(("dgap_do_wait_for_fep() for board %s : finish\n", brd->name));
-}
-
-
-/*
- * Physically forces the FEP5 card to reset itself.
- */
-static void dgap_do_reset_board(struct board_t *brd)
-{
- uchar check;
- u32 check1;
- u32 check2;
- int i = 0;
-
- if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase || !brd->re_map_port) {
- DPR_INIT(("dgap_do_reset_board() start. bad values. brd: %p mem: %p io: %p\n",
- brd, brd ? brd->re_map_membase : 0, brd ? brd->re_map_port : 0));
- return;
- }
-
- DPR_INIT(("dgap_do_reset_board() start. io: %p\n", brd->re_map_port));
-
- /* FEPRST does not vary among supported boards */
- writeb(FEPRST, brd->re_map_port);
-
- for (i = 0; i <= 1000; i++) {
- check = readb(brd->re_map_port) & 0xe;
- if (check == FEPRST)
- break;
- udelay(10);
-
- }
- if (i > 1000) {
- APR(("*** WARNING *** Board not resetting... Failing board.\n"));
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- goto failed;
- }
-
- /*
- * Make sure there really is memory out there.
- */
- writel(0xa55a3cc3, (brd->re_map_membase + LOWMEM));
- writel(0x5aa5c33c, (brd->re_map_membase + HIGHMEM));
- check1 = readl(brd->re_map_membase + LOWMEM);
- check2 = readl(brd->re_map_membase + HIGHMEM);
-
- if ((check1 != 0xa55a3cc3) || (check2 != 0x5aa5c33c)) {
- APR(("*** Warning *** No memory at %p for board.\n", brd->re_map_membase));
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- goto failed;
- }
-
- if (brd->state != BOARD_FAILED)
- brd->state = FINISHED_RESET;
-
-failed:
- DPR_INIT(("dgap_do_reset_board() finish\n"));
-}
-
-
-/*
- * Sends a concentrator image into the FEP5 board.
- */
-static void dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len)
-{
- char *vaddr;
- u16 offset = 0;
- struct downld_t *to_dp;
-
- if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
- return;
-
- vaddr = brd->re_map_membase;
-
- offset = readw((u16 *) (vaddr + DOWNREQ));
- to_dp = (struct downld_t *) (vaddr + (int) offset);
-
- /*
- * The image was already read into kernel space,
- * we do NOT need a user space read here
- */
- memcpy_toio((char *) to_dp, uaddr, sizeof(struct downld_t));
-
- /* Tell card we have data for it */
- writew(0, vaddr + (DOWNREQ));
-
- brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
-}
-
-
-#define EXPANSION_ROM_SIZE (64 * 1024)
-#define FEP5_ROM_MAGIC (0xFEFFFFFF)
-
-static void dgap_get_vpd(struct board_t *brd)
-{
- u32 magic;
- u32 base_offset;
- u16 rom_offset;
- u16 vpd_offset;
- u16 image_length;
- u16 i;
- uchar byte1;
- uchar byte2;
-
- /*
- * Poke the magic number at the PCI Rom Address location.
- * If VPD is supported, the value read from that address
- * will be non-zero.
- */
- magic = FEP5_ROM_MAGIC;
- pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
- pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
-
- /* VPD not supported, bail */
- if (!magic)
- return;
-
- /*
- * To get to the OTPROM memory, we have to send the boards base
- * address or'ed with 1 into the PCI Rom Address location.
- */
- magic = brd->membase | 0x01;
- pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
- pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
-
- byte1 = readb(brd->re_map_membase);
- byte2 = readb(brd->re_map_membase + 1);
-
- /*
- * If the board correctly swapped to the OTPROM memory,
- * the first 2 bytes (header) should be 0x55, 0xAA
- */
- if (byte1 == 0x55 && byte2 == 0xAA) {
-
- base_offset = 0;
-
- /*
- * We have to run through all the OTPROM memory looking
- * for the VPD offset.
- */
- while (base_offset <= EXPANSION_ROM_SIZE) {
-
- /*
- * Lots of magic numbers here.
- *
- * The VPD offset is located inside the ROM Data Structure.
- * We also have to remember the length of each
- * ROM Data Structure, so we can "hop" to the next
- * entry if the VPD isn't in the current
- * ROM Data Structure.
- */
- rom_offset = readw(brd->re_map_membase + base_offset + 0x18);
- image_length = readw(brd->re_map_membase + rom_offset + 0x10) * 512;
- vpd_offset = readw(brd->re_map_membase + rom_offset + 0x08);
-
- /* Found the VPD entry */
- if (vpd_offset)
- break;
-
- /* We didn't find a VPD entry, go to next ROM entry. */
- base_offset += image_length;
-
- byte1 = readb(brd->re_map_membase + base_offset);
- byte2 = readb(brd->re_map_membase + base_offset + 1);
-
- /*
- * If the new ROM offset doesn't have 0x55, 0xAA
- * as its header, we have run out of ROM.
- */
- if (byte1 != 0x55 || byte2 != 0xAA)
- break;
- }
-
- /*
- * If we have a VPD offset, then mark the board
- * as having a valid VPD, and copy VPDSIZE (512) bytes of
- * that VPD to the buffer we have in our board structure.
- */
- if (vpd_offset) {
- brd->bd_flags |= BD_HAS_VPD;
- for (i = 0; i < VPDSIZE; i++)
- brd->vpd[i] = readb(brd->re_map_membase + vpd_offset + i);
- }
- }
-
- /*
- * We MUST poke the magic number at the PCI Rom Address location again.
- * This makes the card report the regular board memory back to us,
- * rather than the OTPROM memory.
- */
- magic = FEP5_ROM_MAGIC;
- pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
-}
-
-
-/*
- * Our board poller function.
- */
-static void dgap_poll_tasklet(unsigned long data)
-{
- struct board_t *bd = (struct board_t *) data;
- ulong lock_flags;
- ulong lock_flags2;
- char *vaddr;
- u16 head, tail;
- u16 *chk_addr;
- u16 check = 0;
-
- if (!bd || (bd->magic != DGAP_BOARD_MAGIC)) {
- APR(("dgap_poll_tasklet() - NULL or bad bd.\n"));
- return;
- }
-
- if (bd->inhibit_poller)
- return;
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
-
- vaddr = bd->re_map_membase;
-
- /*
- * If board is ready, parse deeper to see if there is anything to do.
- */
- if (bd->state == BOARD_READY) {
-
- struct ev_t *eaddr = NULL;
-
- if (!bd->re_map_membase) {
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return;
- }
- if (!bd->re_map_port) {
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return;
- }
-
- if (!bd->nasync) {
- goto out;
- }
-
- /*
- * If this is a CX or EPCX, we need to see if the firmware
- * is requesting a concentrator image from us.
- */
- if ((bd->type == PCX) || (bd->type == PEPC)) {
- chk_addr = (u16 *) (vaddr + DOWNREQ);
- check = readw(chk_addr);
- /* Nonzero if FEP is requesting concentrator image. */
- if (check) {
- if (bd->conc_dl_status == NO_PENDING_CONCENTRATOR_REQUESTS)
- bd->conc_dl_status = NEED_CONCENTRATOR;
- /*
- * Signal downloader, its got some work to do.
- */
- DGAP_LOCK(dgap_dl_lock, lock_flags2);
- if (dgap_dl_action != 1) {
- dgap_dl_action = 1;
- wake_up_interruptible(&dgap_dl_wait);
- }
- DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
-
- }
- }
-
- eaddr = (struct ev_t *) (vaddr + EVBUF);
-
- /* Get our head and tail */
- head = readw(&(eaddr->ev_head));
- tail = readw(&(eaddr->ev_tail));
-
- /*
- * If there is an event pending. Go service it.
- */
- if (head != tail) {
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- dgap_event(bd);
- DGAP_LOCK(bd->bd_lock, lock_flags);
- }
-
-out:
- /*
- * If board is doing interrupts, ACK the interrupt.
- */
- if (bd && bd->intr_running) {
- readb(bd->re_map_port + 2);
- }
-
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return;
- }
-
- /* Our state machine to get the board up and running */
-
- /* Reset board */
- if (bd->state == NEED_RESET) {
-
- /* Get VPD info */
- dgap_get_vpd(bd);
-
- dgap_do_reset_board(bd);
- }
-
- /* Move to next state */
- if (bd->state == FINISHED_RESET) {
- bd->state = NEED_CONFIG;
- }
-
- if (bd->state == NEED_CONFIG) {
- /*
- * Match this board to a config the user created for us.
- */
- bd->bd_config = dgap_find_config(bd->type, bd->pci_bus, bd->pci_slot);
-
- /*
- * Because the 4 port Xr products share the same PCI ID
- * as the 8 port Xr products, if we receive a NULL config
- * back, and this is a PAPORT8 board, retry with a
- * PAPORT4 attempt as well.
- */
- if (bd->type == PAPORT8 && !bd->bd_config) {
- bd->bd_config = dgap_find_config(PAPORT4, bd->pci_bus, bd->pci_slot);
- }
-
- /*
- * Register the ttys (if any) into the kernel.
- */
- if (bd->bd_config) {
- bd->state = FINISHED_CONFIG;
- }
- else {
- bd->state = CONFIG_NOT_FOUND;
- }
- }
-
- /* Move to next state */
- if (bd->state == FINISHED_CONFIG) {
- bd->state = NEED_DEVICE_CREATION;
- }
-
- /* Move to next state */
- if (bd->state == NEED_DEVICE_CREATION) {
- /*
- * Signal downloader, its got some work to do.
- */
- DGAP_LOCK(dgap_dl_lock, lock_flags2);
- if (dgap_dl_action != 1) {
- dgap_dl_action = 1;
- wake_up_interruptible(&dgap_dl_wait);
- }
- DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
- }
-
- /* Move to next state */
- if (bd->state == FINISHED_DEVICE_CREATION) {
- bd->state = NEED_BIOS_LOAD;
- }
-
- /* Move to next state */
- if (bd->state == NEED_BIOS_LOAD) {
- /*
- * Signal downloader, its got some work to do.
- */
- DGAP_LOCK(dgap_dl_lock, lock_flags2);
- if (dgap_dl_action != 1) {
- dgap_dl_action = 1;
- wake_up_interruptible(&dgap_dl_wait);
- }
- DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
- }
-
- /* Wait for BIOS to test board... */
- if (bd->state == WAIT_BIOS_LOAD) {
- dgap_do_wait_for_bios(bd);
- }
-
- /* Move to next state */
- if (bd->state == FINISHED_BIOS_LOAD) {
- bd->state = NEED_FEP_LOAD;
-
- /*
- * Signal downloader, its got some work to do.
- */
- DGAP_LOCK(dgap_dl_lock, lock_flags2);
- if (dgap_dl_action != 1) {
- dgap_dl_action = 1;
- wake_up_interruptible(&dgap_dl_wait);
- }
- DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
- }
-
- /* Wait for FEP to load on board... */
- if (bd->state == WAIT_FEP_LOAD) {
- dgap_do_wait_for_fep(bd);
- }
-
-
- /* Move to next state */
- if (bd->state == FINISHED_FEP_LOAD) {
-
- /*
- * Do tty device initialization.
- */
- int rc = dgap_tty_init(bd);
-
- if (rc < 0) {
- dgap_tty_uninit(bd);
- APR(("Can't init tty devices (%d)\n", rc));
- bd->state = BOARD_FAILED;
- bd->dpastatus = BD_NOFEP;
- }
- else {
- bd->state = NEED_PROC_CREATION;
-
- /*
- * Signal downloader, its got some work to do.
- */
- DGAP_LOCK(dgap_dl_lock, lock_flags2);
- if (dgap_dl_action != 1) {
- dgap_dl_action = 1;
- wake_up_interruptible(&dgap_dl_wait);
- }
- DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
- }
- }
-
- /* Move to next state */
- if (bd->state == FINISHED_PROC_CREATION) {
-
- bd->state = BOARD_READY;
- bd->dpastatus = BD_RUNNING;
-
- /*
- * If user requested the board to run in interrupt mode,
- * go and set it up on the board.
- */
- if (bd->intr_used) {
- writew(1, (bd->re_map_membase + ENABLE_INTR));
- /*
- * Tell the board to poll the UARTS as fast as possible.
- */
- writew(FEPPOLL_MIN, (bd->re_map_membase + FEPPOLL));
- bd->intr_running = 1;
- }
-
- /* Wake up anyone waiting for board state to change to ready */
- wake_up_interruptible(&bd->state_wait);
- }
-
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-}
-
-
-/*=======================================================================
- *
- * dgap_cmdb - Sends a 2 byte command to the FEP.
- *
- * ch - Pointer to channel structure.
- * cmd - Command to be sent.
- * byte1 - Integer containing first byte to be sent.
- * byte2 - Integer containing second byte to be sent.
- * ncmds - Wait until ncmds or fewer cmds are left
- * in the cmd buffer before returning.
- *
- *=======================================================================*/
-static void dgap_cmdb(struct channel_t *ch, uchar cmd, uchar byte1, uchar byte2, uint ncmds)
-{
- char *vaddr = NULL;
- struct cm_t *cm_addr = NULL;
- uint count;
- uint n;
- u16 head;
- u16 tail;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- /*
- * Check if board is still alive.
- */
- if (ch->ch_bd->state == BOARD_FAILED) {
- DPR_CORE(("%s:%d board is in failed state.\n", __FILE__, __LINE__));
- return;
- }
-
- /*
- * Make sure the pointers are in range before
- * writing to the FEP memory.
- */
- vaddr = ch->ch_bd->re_map_membase;
-
- if (!vaddr)
- return;
-
- cm_addr = (struct cm_t *) (vaddr + CMDBUF);
- head = readw(&(cm_addr->cm_head));
-
- /*
- * Forget it if pointers out of range.
- */
- if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
- DPR_CORE(("%s:%d pointers out of range, failing board!\n", __FILE__, __LINE__));
- ch->ch_bd->state = BOARD_FAILED;
- return;
- }
-
- /*
- * Put the data in the circular command buffer.
- */
- writeb(cmd, (char *) (vaddr + head + CMDSTART + 0));
- writeb((uchar) ch->ch_portnum, (char *) (vaddr + head + CMDSTART + 1));
- writeb(byte1, (char *) (vaddr + head + CMDSTART + 2));
- writeb(byte2, (char *) (vaddr + head + CMDSTART + 3));
-
- head = (head + 4) & (CMDMAX - CMDSTART - 4);
-
- writew(head, &(cm_addr->cm_head));
-
- /*
- * Wait if necessary before updating the head
- * pointer to limit the number of outstanding
- * commands to the FEP. If the time spent waiting
- * is outlandish, declare the FEP dead.
- */
- for (count = dgap_count ;;) {
-
- head = readw(&(cm_addr->cm_head));
- tail = readw(&(cm_addr->cm_tail));
-
- n = (head - tail) & (CMDMAX - CMDSTART - 4);
-
- if (n <= ncmds * sizeof(struct cm_t))
- break;
-
- if (--count == 0) {
- DPR_CORE(("%s:%d failing board.\n",__FILE__, __LINE__));
- ch->ch_bd->state = BOARD_FAILED;
- return;
- }
- udelay(10);
- }
-}
-
-
-/*=======================================================================
- *
- * dgap_cmdw - Sends a 1 word command to the FEP.
- *
- * ch - Pointer to channel structure.
- * cmd - Command to be sent.
- * word - Integer containing word to be sent.
- * ncmds - Wait until ncmds or fewer cmds are left
- * in the cmd buffer before returning.
- *
- *=======================================================================*/
-static void dgap_cmdw(struct channel_t *ch, uchar cmd, u16 word, uint ncmds)
-{
- char *vaddr = NULL;
- struct cm_t *cm_addr = NULL;
- uint count;
- uint n;
- u16 head;
- u16 tail;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- /*
- * Check if board is still alive.
- */
- if (ch->ch_bd->state == BOARD_FAILED) {
- DPR_CORE(("%s:%d board is failed!\n", __FILE__, __LINE__));
- return;
- }
-
- /*
- * Make sure the pointers are in range before
- * writing to the FEP memory.
- */
- vaddr = ch->ch_bd->re_map_membase;
- if (!vaddr)
- return;
-
- cm_addr = (struct cm_t *) (vaddr + CMDBUF);
- head = readw(&(cm_addr->cm_head));
-
- /*
- * Forget it if pointers out of range.
- */
- if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
- DPR_CORE(("%s:%d Pointers out of range. Failing board.\n",__FILE__, __LINE__));
- ch->ch_bd->state = BOARD_FAILED;
- return;
- }
-
- /*
- * Put the data in the circular command buffer.
- */
- writeb(cmd, (char *) (vaddr + head + CMDSTART + 0));
- writeb((uchar) ch->ch_portnum, (char *) (vaddr + head + CMDSTART + 1));
- writew((u16) word, (char *) (vaddr + head + CMDSTART + 2));
-
- head = (head + 4) & (CMDMAX - CMDSTART - 4);
-
- writew(head, &(cm_addr->cm_head));
-
- /*
- * Wait if necessary before updating the head
- * pointer to limit the number of outstanding
- * commands to the FEP. If the time spent waiting
- * is outlandish, declare the FEP dead.
- */
- for (count = dgap_count ;;) {
-
- head = readw(&(cm_addr->cm_head));
- tail = readw(&(cm_addr->cm_tail));
-
- n = (head - tail) & (CMDMAX - CMDSTART - 4);
-
- if (n <= ncmds * sizeof(struct cm_t))
- break;
-
- if (--count == 0) {
- DPR_CORE(("%s:%d Failing board.\n",__FILE__, __LINE__));
- ch->ch_bd->state = BOARD_FAILED;
- return;
- }
- udelay(10);
- }
-}
-
-
-
-/*=======================================================================
- *
- * dgap_cmdw_ext - Sends a extended word command to the FEP.
- *
- * ch - Pointer to channel structure.
- * cmd - Command to be sent.
- * word - Integer containing word to be sent.
- * ncmds - Wait until ncmds or fewer cmds are left
- * in the cmd buffer before returning.
- *
- *=======================================================================*/
-static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds)
-{
- char *vaddr = NULL;
- struct cm_t *cm_addr = NULL;
- uint count;
- uint n;
- u16 head;
- u16 tail;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- /*
- * Check if board is still alive.
- */
- if (ch->ch_bd->state == BOARD_FAILED) {
- DPR_CORE(("%s:%d board is failed!\n", __FILE__, __LINE__));
- return;
- }
-
- /*
- * Make sure the pointers are in range before
- * writing to the FEP memory.
- */
- vaddr = ch->ch_bd->re_map_membase;
- if (!vaddr)
- return;
-
- cm_addr = (struct cm_t *) (vaddr + CMDBUF);
- head = readw(&(cm_addr->cm_head));
-
- /*
- * Forget it if pointers out of range.
- */
- if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
- DPR_CORE(("%s:%d Pointers out of range. Failing board.\n",__FILE__, __LINE__));
- ch->ch_bd->state = BOARD_FAILED;
- return;
- }
-
- /*
- * Put the data in the circular command buffer.
- */
-
- /* Write an FF to tell the FEP that we want an extended command */
- writeb((uchar) 0xff, (char *) (vaddr + head + CMDSTART + 0));
-
- writeb((uchar) ch->ch_portnum, (uchar *) (vaddr + head + CMDSTART + 1));
- writew((u16) cmd, (char *) (vaddr + head + CMDSTART + 2));
-
- /*
- * If the second part of the command won't fit,
- * put it at the beginning of the circular buffer.
- */
- if (((head + 4) >= ((CMDMAX - CMDSTART)) || (head & 03))) {
- writew((u16) word, (char *) (vaddr + CMDSTART));
- } else {
- writew((u16) word, (char *) (vaddr + head + CMDSTART + 4));
- }
-
- head = (head + 8) & (CMDMAX - CMDSTART - 4);
-
- writew(head, &(cm_addr->cm_head));
-
- /*
- * Wait if necessary before updating the head
- * pointer to limit the number of outstanding
- * commands to the FEP. If the time spent waiting
- * is outlandish, declare the FEP dead.
- */
- for (count = dgap_count ;;) {
-
- head = readw(&(cm_addr->cm_head));
- tail = readw(&(cm_addr->cm_tail));
-
- n = (head - tail) & (CMDMAX - CMDSTART - 4);
-
- if (n <= ncmds * sizeof(struct cm_t))
- break;
-
- if (--count == 0) {
- DPR_CORE(("%s:%d Failing board.\n",__FILE__, __LINE__));
- ch->ch_bd->state = BOARD_FAILED;
- return;
- }
- udelay(10);
- }
-}
-
-
-/*=======================================================================
- *
- * dgap_wmove - Write data to FEP buffer.
- *
- * ch - Pointer to channel structure.
- * buf - Poiter to characters to be moved.
- * cnt - Number of characters to move.
- *
- *=======================================================================*/
-static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt)
-{
- int n;
- char *taddr;
- struct bs_t *bs;
- u16 head;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- /*
- * Check parameters.
- */
- bs = ch->ch_bs;
- head = readw(&(bs->tx_head));
-
- /*
- * If pointers are out of range, just return.
- */
- if ((cnt > ch->ch_tsize) || (unsigned)(head - ch->ch_tstart) >= ch->ch_tsize) {
- DPR_CORE(("%s:%d pointer out of range", __FILE__, __LINE__));
- return;
- }
-
- /*
- * If the write wraps over the top of the circular buffer,
- * move the portion up to the wrap point, and reset the
- * pointers to the bottom.
- */
- n = ch->ch_tstart + ch->ch_tsize - head;
-
- if (cnt >= n) {
- cnt -= n;
- taddr = ch->ch_taddr + head;
- memcpy_toio(taddr, buf, n);
- head = ch->ch_tstart;
- buf += n;
- }
-
- /*
- * Move rest of data.
- */
- taddr = ch->ch_taddr + head;
- n = cnt;
- memcpy_toio(taddr, buf, n);
- head += cnt;
-
- writew(head, &(bs->tx_head));
-}
-
-/*
- * Retrives the current custom baud rate from FEP memory,
- * and returns it back to the user.
- * Returns 0 on error.
- */
-static uint dgap_get_custom_baud(struct channel_t *ch)
-{
- uchar *vaddr;
- ulong offset = 0;
- uint value = 0;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) {
- return 0;
- }
-
- if (!ch->ch_bd || ch->ch_bd->magic != DGAP_BOARD_MAGIC) {
- return 0;
- }
-
- if (!(ch->ch_bd->bd_flags & BD_FEP5PLUS))
- return 0;
-
- vaddr = ch->ch_bd->re_map_membase;
-
- if (!vaddr)
- return 0;
-
- /*
- * Go get from fep mem, what the fep
- * believes the custom baud rate is.
- */
- offset = ((((*(unsigned short *)(vaddr + ECS_SEG)) << 4) +
- (ch->ch_portnum * 0x28) + LINE_SPEED));
-
- value = readw(vaddr + offset);
- return value;
-}
-
-
-/*
- * Calls the firmware to reset this channel.
- */
-static void dgap_firmware_reset_port(struct channel_t *ch)
-{
- dgap_cmdb(ch, CHRESET, 0, 0, 0);
-
- /*
- * Now that the channel is reset, we need to make sure
- * all the current settings get reapplied to the port
- * in the firmware.
- *
- * So we will set the driver's cache of firmware
- * settings all to 0, and then call param.
- */
- ch->ch_fepiflag = 0;
- ch->ch_fepcflag = 0;
- ch->ch_fepoflag = 0;
- ch->ch_fepstartc = 0;
- ch->ch_fepstopc = 0;
- ch->ch_fepastartc = 0;
- ch->ch_fepastopc = 0;
- ch->ch_mostat = 0;
- ch->ch_hflow = 0;
-}
-
-
-/*=======================================================================
- *
- * dgap_param - Set Digi parameters.
- *
- * struct tty_struct * - TTY for port.
- *
- *=======================================================================*/
-static int dgap_param(struct tty_struct *tty)
-{
- struct ktermios *ts;
- struct board_t *bd;
- struct channel_t *ch;
- struct bs_t *bs;
- struct un_t *un;
- u16 head;
- u16 cflag;
- u16 iflag;
- uchar mval;
- uchar hflow;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -ENXIO;
-
- un = (struct un_t *) tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -ENXIO;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return -ENXIO;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return -ENXIO;
-
- bs = ch->ch_bs;
- if (!bs)
- return -ENXIO;
-
- DPR_PARAM(("param start: tdev: %x cflags: %x oflags: %x iflags: %x\n",
- ch->ch_tun.un_dev, ch->ch_c_cflag, ch->ch_c_oflag, ch->ch_c_iflag));
-
- ts = &tty->termios;
-
- /*
- * If baud rate is zero, flush queues, and set mval to drop DTR.
- */
- if ((ch->ch_c_cflag & (CBAUD)) == 0) {
-
- /* flush rx */
- head = readw(&(ch->ch_bs->rx_head));
- writew(head, &(ch->ch_bs->rx_tail));
-
- /* flush tx */
- head = readw(&(ch->ch_bs->tx_head));
- writew(head, &(ch->ch_bs->tx_tail));
-
- ch->ch_flags |= (CH_BAUD0);
-
- /* Drop RTS and DTR */
- ch->ch_mval &= ~(D_RTS(ch)|D_DTR(ch));
- mval = D_DTR(ch) | D_RTS(ch);
- ch->ch_baud_info = 0;
-
- } else if (ch->ch_custom_speed && (bd->bd_flags & BD_FEP5PLUS)) {
- /*
- * Tell the fep to do the command
- */
-
- DPR_PARAM(("param: Want %d speed\n", ch->ch_custom_speed));
-
- dgap_cmdw_ext(ch, 0xff01, ch->ch_custom_speed, 0);
-
- /*
- * Now go get from fep mem, what the fep
- * believes the custom baud rate is.
- */
- ch->ch_baud_info = ch->ch_custom_speed = dgap_get_custom_baud(ch);
-
- DPR_PARAM(("param: Got %d speed\n", ch->ch_custom_speed));
-
- /* Handle transition from B0 */
- if (ch->ch_flags & CH_BAUD0) {
- ch->ch_flags &= ~(CH_BAUD0);
- ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
- }
- mval = D_DTR(ch) | D_RTS(ch);
-
- } else {
- /*
- * Set baud rate, character size, and parity.
- */
-
-
- int iindex = 0;
- int jindex = 0;
- int baud = 0;
-
- ulong bauds[4][16] = {
- { /* slowbaud */
- 0, 50, 75, 110,
- 134, 150, 200, 300,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* slowbaud & CBAUDEX */
- 0, 57600, 115200, 230400,
- 460800, 150, 200, 921600,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* fastbaud */
- 0, 57600, 76800, 115200,
- 14400, 57600, 230400, 76800,
- 115200, 230400, 28800, 460800,
- 921600, 9600, 19200, 38400 },
- { /* fastbaud & CBAUDEX */
- 0, 57600, 115200, 230400,
- 460800, 150, 200, 921600,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 }
- };
-
- /* Only use the TXPrint baud rate if the terminal unit is NOT open */
- if (!(ch->ch_tun.un_flags & UN_ISOPEN) && (un->un_type == DGAP_PRINT))
- baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
- else
- baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
-
- if (ch->ch_c_cflag & CBAUDEX)
- iindex = 1;
-
- if (ch->ch_digi.digi_flags & DIGI_FAST)
- iindex += 2;
-
- jindex = baud;
-
- if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16)) {
- baud = bauds[iindex][jindex];
- } else {
- DPR_IOCTL(("baud indices were out of range (%d)(%d)",
- iindex, jindex));
- baud = 0;
- }
-
- if (baud == 0)
- baud = 9600;
-
- ch->ch_baud_info = baud;
-
-
- /*
- * CBAUD has bit position 0x1000 set these days to indicate Linux
- * baud rate remap.
- * We use a different bit assignment for high speed. Clear this
- * bit out while grabbing the parts of "cflag" we want.
- */
- cflag = ch->ch_c_cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE);
-
- /*
- * HUPCL bit is used by FEP to indicate fast baud
- * table is to be used.
- */
- if ((ch->ch_digi.digi_flags & DIGI_FAST) || (ch->ch_c_cflag & CBAUDEX))
- cflag |= HUPCL;
-
-
- if ((ch->ch_c_cflag & CBAUDEX) && !(ch->ch_digi.digi_flags & DIGI_FAST)) {
- /*
- * The below code is trying to guarantee that only baud rates
- * 115200, 230400, 460800, 921600 are remapped. We use exclusive or
- * because the various baud rates share common bit positions
- * and therefore can't be tested for easily.
- */
- tcflag_t tcflag = (ch->ch_c_cflag & CBAUD) | CBAUDEX;
- int baudpart = 0;
-
- /* Map high speed requests to index into FEP's baud table */
- switch (tcflag) {
- case B57600 :
- baudpart = 1;
- break;
-#ifdef B76800
- case B76800 :
- baudpart = 2;
- break;
-#endif
- case B115200 :
- baudpart = 3;
- break;
- case B230400 :
- baudpart = 9;
- break;
- case B460800 :
- baudpart = 11;
- break;
-#ifdef B921600
- case B921600 :
- baudpart = 12;
- break;
-#endif
- default:
- baudpart = 0;
- }
-
- if (baudpart)
- cflag = (cflag & ~(CBAUD | CBAUDEX)) | baudpart;
- }
-
- cflag &= 0xffff;
-
- if (cflag != ch->ch_fepcflag) {
- ch->ch_fepcflag = (u16) (cflag & 0xffff);
-
- /* Okay to have channel and board locks held calling this */
- dgap_cmdw(ch, SCFLAG, (u16) cflag, 0);
- }
-
- /* Handle transition from B0 */
- if (ch->ch_flags & CH_BAUD0) {
- ch->ch_flags &= ~(CH_BAUD0);
- ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
- }
- mval = D_DTR(ch) | D_RTS(ch);
- }
-
- /*
- * Get input flags.
- */
- iflag = ch->ch_c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP | IXON | IXANY | IXOFF);
-
- if ((ch->ch_startc == _POSIX_VDISABLE) || (ch->ch_stopc == _POSIX_VDISABLE)) {
- iflag &= ~(IXON | IXOFF);
- ch->ch_c_iflag &= ~(IXON | IXOFF);
- }
-
- /*
- * Only the IBM Xr card can switch between
- * 232 and 422 modes on the fly
- */
- if (bd->device == PCI_DEVICE_XR_IBM_DID) {
- if (ch->ch_digi.digi_flags & DIGI_422)
- dgap_cmdb(ch, SCOMMODE, MODE_422, 0, 0);
- else
- dgap_cmdb(ch, SCOMMODE, MODE_232, 0, 0);
- }
-
- if (ch->ch_digi.digi_flags & DIGI_ALTPIN)
- iflag |= IALTPIN ;
-
- if (iflag != ch->ch_fepiflag) {
- ch->ch_fepiflag = iflag;
-
- /* Okay to have channel and board locks held calling this */
- dgap_cmdw(ch, SIFLAG, (u16) ch->ch_fepiflag, 0);
- }
-
- /*
- * Select hardware handshaking.
- */
- hflow = 0;
-
- if (ch->ch_c_cflag & CRTSCTS) {
- hflow |= (D_RTS(ch) | D_CTS(ch));
- }
- if (ch->ch_digi.digi_flags & RTSPACE)
- hflow |= D_RTS(ch);
- if (ch->ch_digi.digi_flags & DTRPACE)
- hflow |= D_DTR(ch);
- if (ch->ch_digi.digi_flags & CTSPACE)
- hflow |= D_CTS(ch);
- if (ch->ch_digi.digi_flags & DSRPACE)
- hflow |= D_DSR(ch);
- if (ch->ch_digi.digi_flags & DCDPACE)
- hflow |= D_CD(ch);
-
- if (hflow != ch->ch_hflow) {
- ch->ch_hflow = hflow;
-
- /* Okay to have channel and board locks held calling this */
- dgap_cmdb(ch, SHFLOW, (uchar) hflow, 0xff, 0);
- }
-
-
- /*
- * Set RTS and/or DTR Toggle if needed, but only if product is FEP5+ based.
- */
- if (bd->bd_flags & BD_FEP5PLUS) {
- u16 hflow2 = 0;
- if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) {
- hflow2 |= (D_RTS(ch));
- }
- if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) {
- hflow2 |= (D_DTR(ch));
- }
-
- dgap_cmdw_ext(ch, 0xff03, hflow2, 0);
- }
-
- /*
- * Set modem control lines.
- */
-
- mval ^= ch->ch_mforce & (mval ^ ch->ch_mval);
-
- DPR_PARAM(("dgap_param: mval: %x ch_mforce: %x ch_mval: %x ch_mostat: %x\n",
- mval, ch->ch_mforce, ch->ch_mval, ch->ch_mostat));
-
- if (ch->ch_mostat ^ mval) {
- ch->ch_mostat = mval;
-
- /* Okay to have channel and board locks held calling this */
- DPR_PARAM(("dgap_param: Sending SMODEM mval: %x\n", mval));
- dgap_cmdb(ch, SMODEM, (uchar) mval, D_RTS(ch)|D_DTR(ch), 0);
- }
-
- /*
- * Read modem signals, and then call carrier function.
- */
- ch->ch_mistat = readb(&(bs->m_stat));
- dgap_carrier(ch);
-
- /*
- * Set the start and stop characters.
- */
- if (ch->ch_startc != ch->ch_fepstartc || ch->ch_stopc != ch->ch_fepstopc) {
- ch->ch_fepstartc = ch->ch_startc;
- ch->ch_fepstopc = ch->ch_stopc;
-
- /* Okay to have channel and board locks held calling this */
- dgap_cmdb(ch, SFLOWC, ch->ch_fepstartc, ch->ch_fepstopc, 0);
- }
-
- /*
- * Set the Auxiliary start and stop characters.
- */
- if (ch->ch_astartc != ch->ch_fepastartc || ch->ch_astopc != ch->ch_fepastopc) {
- ch->ch_fepastartc = ch->ch_astartc;
- ch->ch_fepastopc = ch->ch_astopc;
-
- /* Okay to have channel and board locks held calling this */
- dgap_cmdb(ch, SAFLOWC, ch->ch_fepastartc, ch->ch_fepastopc, 0);
- }
-
- DPR_PARAM(("param finish\n"));
-
- return 0;
-}
-
-
-/*
- * dgap_parity_scan()
- *
- * Convert the FEP5 way of reporting parity errors and breaks into
- * the Linux line discipline way.
- */
-static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf, unsigned char *fbuf, int *len)
-{
- int l = *len;
- int count = 0;
- unsigned char *in, *cout, *fout;
- unsigned char c;
-
- in = cbuf;
- cout = cbuf;
- fout = fbuf;
-
- DPR_PSCAN(("dgap_parity_scan start\n"));
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- while (l--) {
- c = *in++;
- switch (ch->pscan_state) {
- default:
- /* reset to sanity and fall through */
- ch->pscan_state = 0;
-
- case 0:
- /* No FF seen yet */
- if (c == (unsigned char) '\377') {
- /* delete this character from stream */
- ch->pscan_state = 1;
- } else {
- *cout++ = c;
- *fout++ = TTY_NORMAL;
- count += 1;
- }
- break;
-
- case 1:
- /* first FF seen */
- if (c == (unsigned char) '\377') {
- /* doubled ff, transform to single ff */
- *cout++ = c;
- *fout++ = TTY_NORMAL;
- count += 1;
- ch->pscan_state = 0;
- } else {
- /* save value examination in next state */
- ch->pscan_savechar = c;
- ch->pscan_state = 2;
- }
- break;
-
- case 2:
- /* third character of ff sequence */
-
- *cout++ = c;
-
- if (ch->pscan_savechar == 0x0) {
-
- if (c == 0x0) {
- DPR_PSCAN(("dgap_parity_scan in 3rd char of ff seq. c: %x setting break.\n", c));
- ch->ch_err_break++;
- *fout++ = TTY_BREAK;
- }
- else {
- DPR_PSCAN(("dgap_parity_scan in 3rd char of ff seq. c: %x setting parity.\n", c));
- ch->ch_err_parity++;
- *fout++ = TTY_PARITY;
- }
- }
- else {
- DPR_PSCAN(("%s:%d Logic Error.\n", __FILE__, __LINE__));
- }
-
- count += 1;
- ch->pscan_state = 0;
- }
- }
- *len = count;
- DPR_PSCAN(("dgap_parity_scan finish\n"));
-}
-
-
-
-
-/*=======================================================================
- *
- * dgap_event - FEP to host event processing routine.
- *
- * bd - Board of current event.
- *
- *=======================================================================*/
-static int dgap_event(struct board_t *bd)
-{
- struct channel_t *ch;
- ulong lock_flags;
- ulong lock_flags2;
- struct bs_t *bs;
- uchar *event;
- uchar *vaddr = NULL;
- struct ev_t *eaddr = NULL;
- uint head;
- uint tail;
- int port;
- int reason;
- int modem;
- int b1;
-
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return -ENXIO;
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
-
- vaddr = bd->re_map_membase;
-
- if (!vaddr) {
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return -ENXIO;
- }
-
- eaddr = (struct ev_t *) (vaddr + EVBUF);
-
- /* Get our head and tail */
- head = readw(&(eaddr->ev_head));
- tail = readw(&(eaddr->ev_tail));
-
- /*
- * Forget it if pointers out of range.
- */
-
- if (head >= EVMAX - EVSTART || tail >= EVMAX - EVSTART ||
- (head | tail) & 03) {
- DPR_EVENT(("should be calling xxfail %d\n", __LINE__));
- /* Let go of board lock */
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- return -ENXIO;
- }
-
- /*
- * Loop to process all the events in the buffer.
- */
- while (tail != head) {
-
- /*
- * Get interrupt information.
- */
-
- event = bd->re_map_membase + tail + EVSTART;
-
- port = event[0];
- reason = event[1];
- modem = event[2];
- b1 = event[3];
-
- DPR_EVENT(("event: jiffies: %ld port: %d reason: %x modem: %x\n",
- jiffies, port, reason, modem));
-
- /*
- * Make sure the interrupt is valid.
- */
- if (port >= bd->nasync)
- goto next;
-
- if (!(reason & (IFMODEM | IFBREAK | IFTLW | IFTEM | IFDATA))) {
- goto next;
- }
-
- ch = bd->channels[port];
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) {
- goto next;
- }
-
- /*
- * If we have made it here, the event was valid.
- * Lock down the channel.
- */
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- bs = ch->ch_bs;
-
- if (!bs) {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- goto next;
- }
-
- /*
- * Process received data.
- */
- if (reason & IFDATA) {
-
- /*
- * ALL LOCKS *MUST* BE DROPPED BEFORE CALLING INPUT!
- * input could send some data to ld, which in turn
- * could do a callback to one of our other functions.
- */
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- dgap_input(ch);
-
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
-
- if (ch->ch_flags & CH_RACTIVE)
- ch->ch_flags |= CH_RENABLE;
- else
- writeb(1, &(bs->idata));
-
- if (ch->ch_flags & CH_RWAIT) {
- ch->ch_flags &= ~CH_RWAIT;
-
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
- }
- }
-
- /*
- * Process Modem change signals.
- */
- if (reason & IFMODEM) {
- ch->ch_mistat = modem;
- dgap_carrier(ch);
- }
-
- /*
- * Process break.
- */
- if (reason & IFBREAK) {
-
- DPR_EVENT(("got IFBREAK\n"));
-
- if (ch->ch_tun.un_tty) {
- /* A break has been indicated */
- ch->ch_err_break++;
- tty_buffer_request_room(ch->ch_tun.un_tty->port, 1);
- tty_insert_flip_char(ch->ch_tun.un_tty->port, 0, TTY_BREAK);
- tty_flip_buffer_push(ch->ch_tun.un_tty->port);
- }
- }
-
- /*
- * Process Transmit low.
- */
- if (reason & IFTLW) {
-
- DPR_EVENT(("event: got low event\n"));
-
- if (ch->ch_tun.un_flags & UN_LOW) {
- ch->ch_tun.un_flags &= ~UN_LOW;
-
- if (ch->ch_tun.un_flags & UN_ISOPEN) {
- if ((ch->ch_tun.un_tty->flags &
- (1 << TTY_DO_WRITE_WAKEUP)) &&
- ch->ch_tun.un_tty->ldisc->ops->write_wakeup)
- {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- (ch->ch_tun.un_tty->ldisc->ops->write_wakeup)(ch->ch_tun.un_tty);
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
- }
- wake_up_interruptible(&ch->ch_tun.un_tty->write_wait);
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
-
- DPR_EVENT(("event: Got low event. jiffies: %lu\n", jiffies));
- }
- }
-
- if (ch->ch_pun.un_flags & UN_LOW) {
- ch->ch_pun.un_flags &= ~UN_LOW;
- if (ch->ch_pun.un_flags & UN_ISOPEN) {
- if ((ch->ch_pun.un_tty->flags &
- (1 << TTY_DO_WRITE_WAKEUP)) &&
- ch->ch_pun.un_tty->ldisc->ops->write_wakeup)
- {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- (ch->ch_pun.un_tty->ldisc->ops->write_wakeup)(ch->ch_pun.un_tty);
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
- }
- wake_up_interruptible(&ch->ch_pun.un_tty->write_wait);
- wake_up_interruptible(&ch->ch_pun.un_flags_wait);
- }
- }
-
- if (ch->ch_flags & CH_WLOW) {
- ch->ch_flags &= ~CH_WLOW;
- wake_up_interruptible(&ch->ch_flags_wait);
- }
- }
-
- /*
- * Process Transmit empty.
- */
- if (reason & IFTEM) {
- DPR_EVENT(("event: got empty event\n"));
-
- if (ch->ch_tun.un_flags & UN_EMPTY) {
- ch->ch_tun.un_flags &= ~UN_EMPTY;
- if (ch->ch_tun.un_flags & UN_ISOPEN) {
- if ((ch->ch_tun.un_tty->flags &
- (1 << TTY_DO_WRITE_WAKEUP)) &&
- ch->ch_tun.un_tty->ldisc->ops->write_wakeup)
- {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- (ch->ch_tun.un_tty->ldisc->ops->write_wakeup)(ch->ch_tun.un_tty);
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
- }
- wake_up_interruptible(&ch->ch_tun.un_tty->write_wait);
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
- }
- }
-
- if (ch->ch_pun.un_flags & UN_EMPTY) {
- ch->ch_pun.un_flags &= ~UN_EMPTY;
- if (ch->ch_pun.un_flags & UN_ISOPEN) {
- if ((ch->ch_pun.un_tty->flags &
- (1 << TTY_DO_WRITE_WAKEUP)) &&
- ch->ch_pun.un_tty->ldisc->ops->write_wakeup)
- {
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
- (ch->ch_pun.un_tty->ldisc->ops->write_wakeup)(ch->ch_pun.un_tty);
- DGAP_LOCK(bd->bd_lock, lock_flags);
- DGAP_LOCK(ch->ch_lock, lock_flags2);
- }
- wake_up_interruptible(&ch->ch_pun.un_tty->write_wait);
- wake_up_interruptible(&ch->ch_pun.un_flags_wait);
- }
- }
-
-
- if (ch->ch_flags & CH_WEMPTY) {
- ch->ch_flags &= ~CH_WEMPTY;
- wake_up_interruptible(&ch->ch_flags_wait);
- }
- }
-
- DGAP_UNLOCK(ch->ch_lock, lock_flags2);
-
-next:
- tail = (tail + 4) & (EVMAX - EVSTART - 4);
- }
-
- writew(tail, &(eaddr->ev_tail));
- DGAP_UNLOCK(bd->bd_lock, lock_flags);
-
- return 0;
-}
-
-static ssize_t dgap_driver_version_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
-}
-static DRIVER_ATTR(version, S_IRUSR, dgap_driver_version_show, NULL);
-
-
-static ssize_t dgap_driver_boards_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%d\n", dgap_NumBoards);
-}
-static DRIVER_ATTR(boards, S_IRUSR, dgap_driver_boards_show, NULL);
-
-
-static ssize_t dgap_driver_maxboards_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
-}
-static DRIVER_ATTR(maxboards, S_IRUSR, dgap_driver_maxboards_show, NULL);
-
-
-static ssize_t dgap_driver_pollcounter_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%ld\n", dgap_poll_counter);
-}
-static DRIVER_ATTR(pollcounter, S_IRUSR, dgap_driver_pollcounter_show, NULL);
-
-
-static ssize_t dgap_driver_state_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%s\n", dgap_driver_state_text[dgap_driver_state]);
-}
-static DRIVER_ATTR(state, S_IRUSR, dgap_driver_state_show, NULL);
-
-
-static ssize_t dgap_driver_debug_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "0x%x\n", dgap_debug);
-}
-
-static ssize_t dgap_driver_debug_store(struct device_driver *ddp, const char *buf, size_t count)
-{
- sscanf(buf, "0x%x\n", &dgap_debug);
- return count;
-}
-static DRIVER_ATTR(debug, (S_IRUSR | S_IWUSR), dgap_driver_debug_show, dgap_driver_debug_store);
-
-
-static ssize_t dgap_driver_rawreadok_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "0x%x\n", dgap_rawreadok);
-}
-
-static ssize_t dgap_driver_rawreadok_store(struct device_driver *ddp, const char *buf, size_t count)
-{
- sscanf(buf, "0x%x\n", &dgap_rawreadok);
- return count;
-}
-static DRIVER_ATTR(rawreadok, (S_IRUSR | S_IWUSR), dgap_driver_rawreadok_show, dgap_driver_rawreadok_store);
-
-
-static ssize_t dgap_driver_pollrate_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%dms\n", dgap_poll_tick);
-}
-
-static ssize_t dgap_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count)
-{
- sscanf(buf, "%d\n", &dgap_poll_tick);
- return count;
-}
-static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgap_driver_pollrate_show, dgap_driver_pollrate_store);
-
-
-static void dgap_create_driver_sysfiles(struct pci_driver *dgap_driver)
-{
- int rc = 0;
- struct device_driver *driverfs = &dgap_driver->driver;
-
- rc |= driver_create_file(driverfs, &driver_attr_version);
- rc |= driver_create_file(driverfs, &driver_attr_boards);
- rc |= driver_create_file(driverfs, &driver_attr_maxboards);
- rc |= driver_create_file(driverfs, &driver_attr_debug);
- rc |= driver_create_file(driverfs, &driver_attr_rawreadok);
- rc |= driver_create_file(driverfs, &driver_attr_pollrate);
- rc |= driver_create_file(driverfs, &driver_attr_pollcounter);
- rc |= driver_create_file(driverfs, &driver_attr_state);
- if (rc) {
- printk(KERN_ERR "DGAP: sysfs driver_create_file failed!\n");
- }
-}
-
-
-static void dgap_remove_driver_sysfiles(struct pci_driver *dgap_driver)
-{
- struct device_driver *driverfs = &dgap_driver->driver;
- driver_remove_file(driverfs, &driver_attr_version);
- driver_remove_file(driverfs, &driver_attr_boards);
- driver_remove_file(driverfs, &driver_attr_maxboards);
- driver_remove_file(driverfs, &driver_attr_debug);
- driver_remove_file(driverfs, &driver_attr_rawreadok);
- driver_remove_file(driverfs, &driver_attr_pollrate);
- driver_remove_file(driverfs, &driver_attr_pollcounter);
- driver_remove_file(driverfs, &driver_attr_state);
-}
-
-
-#define DGAP_VERIFY_BOARD(p, bd) \
- if (!p) \
- return (0); \
- \
- bd = dev_get_drvdata(p); \
- if (!bd || bd->magic != DGAP_BOARD_MAGIC) \
- return (0); \
- if (bd->state != BOARD_READY) \
- return (0); \
-
-
-static ssize_t dgap_ports_state_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %s\n", bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_open_count ? "Open" : "Closed");
- }
- return count;
-}
-static DEVICE_ATTR(ports_state, S_IRUSR, dgap_ports_state_show, NULL);
-
-
-static ssize_t dgap_ports_baud_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %d\n", bd->channels[i]->ch_portnum, bd->channels[i]->ch_baud_info);
- }
- return count;
-}
-static DEVICE_ATTR(ports_baud, S_IRUSR, dgap_ports_baud_show, NULL);
-
-
-static ssize_t dgap_ports_msignals_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- if (bd->channels[i]->ch_open_count) {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %s %s %s %s %s %s\n", bd->channels[i]->ch_portnum,
- (bd->channels[i]->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
- (bd->channels[i]->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_RI) ? "RI" : "");
- } else {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d\n", bd->channels[i]->ch_portnum);
- }
- }
- return count;
-}
-static DEVICE_ATTR(ports_msignals, S_IRUSR, dgap_ports_msignals_show, NULL);
-
-
-static ssize_t dgap_ports_iflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_iflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_iflag, S_IRUSR, dgap_ports_iflag_show, NULL);
-
-
-static ssize_t dgap_ports_cflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_cflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_cflag, S_IRUSR, dgap_ports_cflag_show, NULL);
-
-
-static ssize_t dgap_ports_oflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_oflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_oflag, S_IRUSR, dgap_ports_oflag_show, NULL);
-
-
-static ssize_t dgap_ports_lflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_lflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_lflag, S_IRUSR, dgap_ports_lflag_show, NULL);
-
-
-static ssize_t dgap_ports_digi_flag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_digi.digi_flags);
- }
- return count;
-}
-static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgap_ports_digi_flag_show, NULL);
-
-
-static ssize_t dgap_ports_rxcount_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_rxcount);
- }
- return count;
-}
-static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgap_ports_rxcount_show, NULL);
-
-
-static ssize_t dgap_ports_txcount_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- int count = 0;
- int i = 0;
-
- DGAP_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_txcount);
- }
- return count;
-}
-static DEVICE_ATTR(ports_txcount, S_IRUSR, dgap_ports_txcount_show, NULL);
-
-
-/* this function creates the sys files that will export each signal status
- * to sysfs each value will be put in a separate filename
- */
-static void dgap_create_ports_sysfiles(struct board_t *bd)
-{
- int rc = 0;
-
- dev_set_drvdata(&bd->pdev->dev, bd);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
- if (rc) {
- printk(KERN_ERR "DGAP: sysfs device_create_file failed!\n");
- }
-}
-
-
-/* removes all the sys files created for that port */
-static void dgap_remove_ports_sysfiles(struct board_t *bd)
-{
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
-}
-
-
-static ssize_t dgap_tty_state_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? "Open" : "Closed");
-}
-static DEVICE_ATTR(state, S_IRUSR, dgap_tty_state_show, NULL);
-
-
-static ssize_t dgap_tty_baud_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_baud_info);
-}
-static DEVICE_ATTR(baud, S_IRUSR, dgap_tty_baud_show, NULL);
-
-
-static ssize_t dgap_tty_msignals_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- if (ch->ch_open_count) {
- return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
- (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
- (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
- (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
- (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
- (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
- (ch->ch_mistat & UART_MSR_RI) ? "RI" : "");
- }
- return 0;
-}
-static DEVICE_ATTR(msignals, S_IRUSR, dgap_tty_msignals_show, NULL);
-
-
-static ssize_t dgap_tty_iflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
-}
-static DEVICE_ATTR(iflag, S_IRUSR, dgap_tty_iflag_show, NULL);
-
-
-static ssize_t dgap_tty_cflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
-}
-static DEVICE_ATTR(cflag, S_IRUSR, dgap_tty_cflag_show, NULL);
-
-
-static ssize_t dgap_tty_oflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
-}
-static DEVICE_ATTR(oflag, S_IRUSR, dgap_tty_oflag_show, NULL);
-
-
-static ssize_t dgap_tty_lflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
-}
-static DEVICE_ATTR(lflag, S_IRUSR, dgap_tty_lflag_show, NULL);
-
-
-static ssize_t dgap_tty_digi_flag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
-}
-static DEVICE_ATTR(digi_flag, S_IRUSR, dgap_tty_digi_flag_show, NULL);
-
-
-static ssize_t dgap_tty_rxcount_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
-}
-static DEVICE_ATTR(rxcount, S_IRUSR, dgap_tty_rxcount_show, NULL);
-
-
-static ssize_t dgap_tty_txcount_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
-}
-static DEVICE_ATTR(txcount, S_IRUSR, dgap_tty_txcount_show, NULL);
-
-
-static ssize_t dgap_tty_name_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int cn;
- int bn;
- struct cnode *cptr = NULL;
- int found = FALSE;
- int ncount = 0;
- int starto = 0;
- int i = 0;
-
- if (!d)
- return (0);
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return (0);
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return (0);
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return (0);
- if (bd->state != BOARD_READY)
- return (0);
-
- bn = bd->boardnum;
- cn = ch->ch_portnum;
-
- for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
-
- if ((cptr->type == BNODE) &&
- ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
- (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
- (cptr->u.board.type == PAPORT8))) {
-
- found = TRUE;
- if (cptr->u.board.v_start)
- starto = cptr->u.board.start;
- else
- starto = 1;
- }
-
- if (cptr->type == TNODE && found == TRUE) {
- char *ptr1;
- if (strstr(cptr->u.ttyname, "tty")) {
- ptr1 = cptr->u.ttyname;
- ptr1 += 3;
- }
- else {
- ptr1 = cptr->u.ttyname;
- }
-
- for (i = 0; i < dgap_config_get_number_of_ports(bd); i++) {
- if (cn == i) {
- return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
- (un->un_type == DGAP_PRINT) ? "pr" : "tty",
- ptr1, i + starto);
- }
- }
- }
-
- if (cptr->type == CNODE) {
-
- for (i = 0; i < cptr->u.conc.nport; i++) {
- if (cn == (i + ncount)) {
-
- return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
- (un->un_type == DGAP_PRINT) ? "pr" : "tty",
- cptr->u.conc.id,
- i + (cptr->u.conc.v_start ? cptr->u.conc.start : 1));
- }
- }
-
- ncount += cptr->u.conc.nport;
- }
-
- if (cptr->type == MNODE) {
-
- for (i = 0; i < cptr->u.module.nport; i++) {
- if (cn == (i + ncount)) {
- return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
- (un->un_type == DGAP_PRINT) ? "pr" : "tty",
- cptr->u.module.id,
- i + (cptr->u.module.v_start ? cptr->u.module.start : 1));
- }
- }
-
- ncount += cptr->u.module.nport;
-
- }
- }
-
- return snprintf(buf, PAGE_SIZE, "%s_dgap_%d_%d\n",
- (un->un_type == DGAP_PRINT) ? "pr" : "tty", bn, cn);
-
-}
-static DEVICE_ATTR(custom_name, S_IRUSR, dgap_tty_name_show, NULL);
-
-
-static struct attribute *dgap_sysfs_tty_entries[] = {
- &dev_attr_state.attr,
- &dev_attr_baud.attr,
- &dev_attr_msignals.attr,
- &dev_attr_iflag.attr,
- &dev_attr_cflag.attr,
- &dev_attr_oflag.attr,
- &dev_attr_lflag.attr,
- &dev_attr_digi_flag.attr,
- &dev_attr_rxcount.attr,
- &dev_attr_txcount.attr,
- &dev_attr_custom_name.attr,
- NULL
-};
-
-
-static struct attribute_group dgap_tty_attribute_group = {
- .name = NULL,
- .attrs = dgap_sysfs_tty_entries,
-};
-
-
-
-
-static void dgap_create_tty_sysfs(struct un_t *un, struct device *c)
-{
- int ret;
-
- ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group);
- if (ret) {
- printk(KERN_ERR "dgap: failed to create sysfs tty device attributes.\n");
- sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
- return;
- }
-
- dev_set_drvdata(c, un);
-
-}
-
-
-static void dgap_remove_tty_sysfs(struct device *c)
-{
- sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
-}
-
-/*
- * Parse a configuration file read into memory as a string.
- */
-static int dgap_parsefile(char **in, int Remove)
-{
- struct cnode *p, *brd, *line, *conc;
- int rc;
- char *s = NULL, *s2 = NULL;
- int linecnt = 0;
-
- p = &dgap_head;
- brd = line = conc = NULL;
-
- /* perhaps we are adding to an existing list? */
- while (p->next != NULL) {
- p = p->next;
- }
-
- /* file must start with a BEGIN */
- while ( (rc = dgap_gettok(in,p)) != BEGIN ) {
- if (rc == 0) {
- dgap_err("unexpected EOF");
- return(-1);
- }
- }
-
- for (; ; ) {
- rc = dgap_gettok(in,p);
- if (rc == 0) {
- dgap_err("unexpected EOF");
- return(-1);
- }
-
- switch (rc) {
- case 0:
- dgap_err("unexpected end of file");
- return(-1);
-
- case BEGIN: /* should only be 1 begin */
- dgap_err("unexpected config_begin\n");
- return(-1);
-
- case END:
- return(0);
-
- case BOARD: /* board info */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(BNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
-
- p->u.board.status = dgap_savestring("No");
- line = conc = NULL;
- brd = p;
- linecnt = -1;
- break;
-
- case APORT2_920P: /* AccelePort_4 */
- if (p->type != BNODE) {
- dgap_err("unexpected Digi_2r_920 string");
- return(-1);
- }
- p->u.board.type = APORT2_920P;
- p->u.board.v_type = 1;
- DPR_INIT(("Adding Digi_2r_920 PCI to config...\n"));
- break;
-
- case APORT4_920P: /* AccelePort_4 */
- if (p->type != BNODE) {
- dgap_err("unexpected Digi_4r_920 string");
- return(-1);
- }
- p->u.board.type = APORT4_920P;
- p->u.board.v_type = 1;
- DPR_INIT(("Adding Digi_4r_920 PCI to config...\n"));
- break;
-
- case APORT8_920P: /* AccelePort_8 */
- if (p->type != BNODE) {
- dgap_err("unexpected Digi_8r_920 string");
- return(-1);
- }
- p->u.board.type = APORT8_920P;
- p->u.board.v_type = 1;
- DPR_INIT(("Adding Digi_8r_920 PCI to config...\n"));
- break;
-
- case PAPORT4: /* AccelePort_4 PCI */
- if (p->type != BNODE) {
- dgap_err("unexpected Digi_4r(PCI) string");
- return(-1);
- }
- p->u.board.type = PAPORT4;
- p->u.board.v_type = 1;
- DPR_INIT(("Adding Digi_4r PCI to config...\n"));
- break;
-
- case PAPORT8: /* AccelePort_8 PCI */
- if (p->type != BNODE) {
- dgap_err("unexpected Digi_8r string");
- return(-1);
- }
- p->u.board.type = PAPORT8;
- p->u.board.v_type = 1;
- DPR_INIT(("Adding Digi_8r PCI to config...\n"));
- break;
-
- case PCX: /* PCI C/X */
- if (p->type != BNODE) {
- dgap_err("unexpected Digi_C/X_(PCI) string");
- return(-1);
- }
- p->u.board.type = PCX;
- p->u.board.v_type = 1;
- p->u.board.conc1 = 0;
- p->u.board.conc2 = 0;
- p->u.board.module1 = 0;
- p->u.board.module2 = 0;
- DPR_INIT(("Adding PCI C/X to config...\n"));
- break;
-
- case PEPC: /* PCI EPC/X */
- if (p->type != BNODE) {
- dgap_err("unexpected \"Digi_EPC/X_(PCI)\" string");
- return(-1);
- }
- p->u.board.type = PEPC;
- p->u.board.v_type = 1;
- p->u.board.conc1 = 0;
- p->u.board.conc2 = 0;
- p->u.board.module1 = 0;
- p->u.board.module2 = 0;
- DPR_INIT(("Adding PCI EPC/X to config...\n"));
- break;
-
- case PPCM: /* PCI/Xem */
- if (p->type != BNODE) {
- dgap_err("unexpected PCI/Xem string");
- return(-1);
- }
- p->u.board.type = PPCM;
- p->u.board.v_type = 1;
- p->u.board.conc1 = 0;
- p->u.board.conc2 = 0;
- DPR_INIT(("Adding PCI XEM to config...\n"));
- break;
-
- case IO: /* i/o port */
- if (p->type != BNODE) {
- dgap_err("IO port only vaild for boards");
- return(-1);
- }
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.portstr = dgap_savestring(s);
- p->u.board.port = (short)simple_strtol(s, &s2, 0);
- if ((short)strlen(s) > (short)(s2 - s)) {
- dgap_err("bad number for IO port");
- return(-1);
- }
- p->u.board.v_port = 1;
- DPR_INIT(("Adding IO (%s) to config...\n", s));
- break;
-
- case MEM: /* memory address */
- if (p->type != BNODE) {
- dgap_err("memory address only vaild for boards");
- return(-1);
- }
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.addrstr = dgap_savestring(s);
- p->u.board.addr = simple_strtoul(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for memory address");
- return(-1);
- }
- p->u.board.v_addr = 1;
- DPR_INIT(("Adding MEM (%s) to config...\n", s));
- break;
-
- case PCIINFO: /* pci information */
- if (p->type != BNODE) {
- dgap_err("memory address only vaild for boards");
- return(-1);
- }
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.pcibusstr = dgap_savestring(s);
- p->u.board.pcibus = simple_strtoul(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for pci bus");
- return(-1);
- }
- p->u.board.v_pcibus = 1;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.pcislotstr = dgap_savestring(s);
- p->u.board.pcislot = simple_strtoul(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for pci slot");
- return(-1);
- }
- p->u.board.v_pcislot = 1;
-
- DPR_INIT(("Adding PCIINFO (%s %s) to config...\n", p->u.board.pcibusstr,
- p->u.board.pcislotstr));
- break;
-
- case METHOD:
- if (p->type != BNODE) {
- dgap_err("install method only vaild for boards");
- return(-1);
- }
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.method = dgap_savestring(s);
- p->u.board.v_method = 1;
- DPR_INIT(("Adding METHOD (%s) to config...\n", s));
- break;
-
- case STATUS:
- if (p->type != BNODE) {
- dgap_err("config status only vaild for boards");
- return(-1);
- }
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.status = dgap_savestring(s);
- DPR_INIT(("Adding STATUS (%s) to config...\n", s));
- break;
-
- case NPORTS: /* number of ports */
- if (p->type == BNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.nport = (char)simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for number of ports");
- return(-1);
- }
- p->u.board.v_nport = 1;
- } else if (p->type == CNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.conc.nport = (char)simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for number of ports");
- return(-1);
- }
- p->u.conc.v_nport = 1;
- } else if (p->type == MNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.module.nport = (char)simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for number of ports");
- return(-1);
- }
- p->u.module.v_nport = 1;
- } else {
- dgap_err("nports only valid for concentrators or modules");
- return(-1);
- }
- DPR_INIT(("Adding NPORTS (%s) to config...\n", s));
- break;
-
- case ID: /* letter ID used in tty name */
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
-
- p->u.board.status = dgap_savestring(s);
-
- if (p->type == CNODE) {
- p->u.conc.id = dgap_savestring(s);
- p->u.conc.v_id = 1;
- } else if (p->type == MNODE) {
- p->u.module.id = dgap_savestring(s);
- p->u.module.v_id = 1;
- } else {
- dgap_err("id only valid for concentrators or modules");
- return(-1);
- }
- DPR_INIT(("Adding ID (%s) to config...\n", s));
- break;
-
- case STARTO: /* start offset of ID */
- if (p->type == BNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.board.start = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for start of tty count");
- return(-1);
- }
- p->u.board.v_start = 1;
- } else if (p->type == CNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.conc.start = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for start of tty count");
- return(-1);
- }
- p->u.conc.v_start = 1;
- } else if (p->type == MNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.module.start = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for start of tty count");
- return(-1);
- }
- p->u.module.v_start = 1;
- } else {
- dgap_err("start only valid for concentrators or modules");
- return(-1);
- }
- DPR_INIT(("Adding START (%s) to config...\n", s));
- break;
-
- case TTYN: /* tty name prefix */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(TNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- if ( (s = dgap_getword(in)) == NULL ) {
- dgap_err("unexpeced end of file");
- return(-1);
- }
- if ( (p->u.ttyname = dgap_savestring(s)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- DPR_INIT(("Adding TTY (%s) to config...\n", s));
- break;
-
- case CU: /* cu name prefix */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(CUNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- if ( (s = dgap_getword(in)) == NULL ) {
- dgap_err("unexpeced end of file");
- return(-1);
- }
- if ( (p->u.cuname = dgap_savestring(s)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- DPR_INIT(("Adding CU (%s) to config...\n", s));
- break;
-
- case LINE: /* line information */
- if (dgap_checknode(p))
- return(-1);
- if (brd == NULL) {
- dgap_err("must specify board before line info");
- return(-1);
- }
- switch (brd->u.board.type) {
- case PPCM:
- dgap_err("line not vaild for PC/em");
- return(-1);
- }
- if ( (p->next = dgap_newnode(LNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- conc = NULL;
- line = p;
- linecnt++;
- DPR_INIT(("Adding LINE to config...\n"));
- break;
-
- case CONC: /* concentrator information */
- if (dgap_checknode(p))
- return(-1);
- if (line == NULL) {
- dgap_err("must specify line info before concentrator");
- return(-1);
- }
- if ( (p->next = dgap_newnode(CNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- conc = p;
- if (linecnt)
- brd->u.board.conc2++;
- else
- brd->u.board.conc1++;
-
- DPR_INIT(("Adding CONC to config...\n"));
- break;
-
- case CX: /* c/x type concentrator */
- if (p->type != CNODE) {
- dgap_err("cx only valid for concentrators");
- return(-1);
- }
- p->u.conc.type = CX;
- p->u.conc.v_type = 1;
- DPR_INIT(("Adding CX to config...\n"));
- break;
-
- case EPC: /* epc type concentrator */
- if (p->type != CNODE) {
- dgap_err("cx only valid for concentrators");
- return(-1);
- }
- p->u.conc.type = EPC;
- p->u.conc.v_type = 1;
- DPR_INIT(("Adding EPC to config...\n"));
- break;
-
- case MOD: /* EBI module */
- if (dgap_checknode(p))
- return(-1);
- if (brd == NULL) {
- dgap_err("must specify board info before EBI modules");
- return(-1);
- }
- switch (brd->u.board.type) {
- case PPCM:
- linecnt = 0;
- break;
- default:
- if (conc == NULL) {
- dgap_err("must specify concentrator info before EBI module");
- return(-1);
- }
- }
- if ( (p->next = dgap_newnode(MNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- if (linecnt)
- brd->u.board.module2++;
- else
- brd->u.board.module1++;
-
- DPR_INIT(("Adding MOD to config...\n"));
- break;
-
- case PORTS: /* ports type EBI module */
- if (p->type != MNODE) {
- dgap_err("ports only valid for EBI modules");
- return(-1);
- }
- p->u.module.type = PORTS;
- p->u.module.v_type = 1;
- DPR_INIT(("Adding PORTS to config...\n"));
- break;
-
- case MODEM: /* ports type EBI module */
- if (p->type != MNODE) {
- dgap_err("modem only valid for modem modules");
- return(-1);
- }
- p->u.module.type = MODEM;
- p->u.module.v_type = 1;
- DPR_INIT(("Adding MODEM to config...\n"));
- break;
-
- case CABLE:
- if (p->type == LNODE) {
- if ((s = dgap_getword(in)) == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.line.cable = dgap_savestring(s);
- p->u.line.v_cable = 1;
- }
- DPR_INIT(("Adding CABLE (%s) to config...\n", s));
- break;
-
- case SPEED: /* sync line speed indication */
- if (p->type == LNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.line.speed = (char)simple_strtol(s, &s2, 0);
- if ((short)strlen(s) > (short)(s2 - s)) {
- dgap_err("bad number for line speed");
- return(-1);
- }
- p->u.line.v_speed = 1;
- } else if (p->type == CNODE) {
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.conc.speed = (char)simple_strtol(s, &s2, 0);
- if ((short)strlen(s) > (short)(s2 - s)) {
- dgap_err("bad number for line speed");
- return(-1);
- }
- p->u.conc.v_speed = 1;
- } else {
- dgap_err("speed valid only for lines or concentrators.");
- return(-1);
- }
- DPR_INIT(("Adding SPEED (%s) to config...\n", s));
- break;
-
- case CONNECT:
- if (p->type == CNODE) {
- if ((s = dgap_getword(in)) == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.conc.connect = dgap_savestring(s);
- p->u.conc.v_connect = 1;
- }
- DPR_INIT(("Adding CONNECT (%s) to config...\n", s));
- break;
- case PRINT: /* transparent print name prefix */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(PNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- if ( (s = dgap_getword(in)) == NULL ) {
- dgap_err("unexpeced end of file");
- return(-1);
- }
- if ( (p->u.printname = dgap_savestring(s)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- DPR_INIT(("Adding PRINT (%s) to config...\n", s));
- break;
-
- case CMAJOR: /* major number */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(JNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.majornumber = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for major number");
- return(-1);
- }
- DPR_INIT(("Adding CMAJOR (%s) to config...\n", s));
- break;
-
- case ALTPIN: /* altpin setting */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(ANODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.altpin = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for altpin");
- return(-1);
- }
- DPR_INIT(("Adding ALTPIN (%s) to config...\n", s));
- break;
-
- case USEINTR: /* enable interrupt setting */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(INTRNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.useintr = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for useintr");
- return(-1);
- }
- DPR_INIT(("Adding USEINTR (%s) to config...\n", s));
- break;
-
- case TTSIZ: /* size of tty structure */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(TSNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.ttysize = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for ttysize");
- return(-1);
- }
- DPR_INIT(("Adding TTSIZ (%s) to config...\n", s));
- break;
-
- case CHSIZ: /* channel structure size */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(CSNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.chsize = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for chsize");
- return(-1);
- }
- DPR_INIT(("Adding CHSIZE (%s) to config...\n", s));
- break;
-
- case BSSIZ: /* board structure size */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(BSNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.bssize = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for bssize");
- return(-1);
- }
- DPR_INIT(("Adding BSSIZ (%s) to config...\n", s));
- break;
-
- case UNTSIZ: /* sched structure size */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(USNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.unsize = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for schedsize");
- return(-1);
- }
- DPR_INIT(("Adding UNTSIZ (%s) to config...\n", s));
- break;
-
- case F2SIZ: /* f2200 structure size */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(FSNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.f2size = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for f2200size");
- return(-1);
- }
- DPR_INIT(("Adding F2SIZ (%s) to config...\n", s));
- break;
-
- case VPSIZ: /* vpix structure size */
- if (dgap_checknode(p))
- return(-1);
- if ( (p->next = dgap_newnode(VSNODE)) == NULL ) {
- dgap_err("out of memory");
- return(-1);
- }
- p = p->next;
- s = dgap_getword(in);
- if (s == NULL) {
- dgap_err("unexpected end of file");
- return(-1);
- }
- p->u.vpixsize = simple_strtol(s, &s2, 0);
- if ((int)strlen(s) > (int)(s2 - s)) {
- dgap_err("bad number for vpixsize");
- return(-1);
- }
- DPR_INIT(("Adding VPSIZ (%s) to config...\n", s));
- break;
- }
- }
-}
-
-
-/*
- * dgap_sindex: much like index(), but it looks for a match of any character in
- * the group, and returns that position. If the first character is a ^, then
- * this will match the first occurrence not in that group.
- */
-static char *dgap_sindex (char *string, char *group)
-{
- char *ptr;
-
- if (!string || !group)
- return (char *) NULL;
-
- if (*group == '^') {
- group++;
- for (; *string; string++) {
- for (ptr = group; *ptr; ptr++) {
- if (*ptr == *string)
- break;
- }
- if (*ptr == '\0')
- return string;
- }
- }
- else {
- for (; *string; string++) {
- for (ptr = group; *ptr; ptr++) {
- if (*ptr == *string)
- return string;
- }
- }
- }
-
- return (char *) NULL;
-}
-
-
-/*
- * Get a token from the input file; return 0 if end of file is reached
- */
-static int dgap_gettok(char **in, struct cnode *p)
-{
- char *w;
- struct toklist *t;
-
- if (strstr(dgap_cword, "boar")) {
- w = dgap_getword(in);
- snprintf(dgap_cword, MAXCWORD, "%s", w);
- for (t = dgap_tlist; t->token != 0; t++) {
- if ( !strcmp(w, t->string)) {
- return(t->token);
- }
- }
- dgap_err("board !!type not specified");
- return(1);
- }
- else {
- while ( (w = dgap_getword(in)) != NULL ) {
- snprintf(dgap_cword, MAXCWORD, "%s", w);
- for (t = dgap_tlist; t->token != 0; t++) {
- if ( !strcmp(w, t->string) )
- return(t->token);
- }
- }
- return(0);
- }
-}
-
-
-/*
- * get a word from the input stream, also keep track of current line number.
- * words are separated by whitespace.
- */
-static char *dgap_getword(char **in)
-{
- char *ret_ptr = *in;
-
- char *ptr = dgap_sindex(*in, " \t\n");
-
- /* If no word found, return null */
- if (!ptr)
- return NULL;
-
- /* Mark new location for our buffer */
- *ptr = '\0';
- *in = ptr + 1;
-
- /* Eat any extra spaces/tabs/newlines that might be present */
- while (*in && **in && ((**in == ' ') || (**in == '\t') || (**in == '\n'))) {
- **in = '\0';
- *in = *in + 1;
- }
-
- return ret_ptr;
-}
-
-
-/*
- * print an error message, giving the line number in the file where
- * the error occurred.
- */
-static void dgap_err(char *s)
-{
- printk("DGAP: parse: %s\n", s);
-}
-
-
-/*
- * allocate a new configuration node of type t
- */
-static struct cnode *dgap_newnode(int t)
-{
- struct cnode *n;
-
- n = kmalloc(sizeof(struct cnode), GFP_ATOMIC);
- if (n != NULL) {
- memset((char *)n, 0, sizeof(struct cnode));
- n->type = t;
- }
- return(n);
-}
-
-
-/*
- * dgap_checknode: see if all the necessary info has been supplied for a node
- * before creating the next node.
- */
-static int dgap_checknode(struct cnode *p)
-{
- switch (p->type) {
- case BNODE:
- if (p->u.board.v_type == 0) {
- dgap_err("board type !not specified");
- return(1);
- }
-
- return(0);
-
- case LNODE:
- if (p->u.line.v_speed == 0) {
- dgap_err("line speed not specified");
- return(1);
- }
- return(0);
-
- case CNODE:
- if (p->u.conc.v_type == 0) {
- dgap_err("concentrator type not specified");
- return(1);
- }
- if (p->u.conc.v_speed == 0) {
- dgap_err("concentrator line speed not specified");
- return(1);
- }
- if (p->u.conc.v_nport == 0) {
- dgap_err("number of ports on concentrator not specified");
- return(1);
- }
- if (p->u.conc.v_id == 0) {
- dgap_err("concentrator id letter not specified");
- return(1);
- }
- return(0);
-
- case MNODE:
- if (p->u.module.v_type == 0) {
- dgap_err("EBI module type not specified");
- return(1);
- }
- if (p->u.module.v_nport == 0) {
- dgap_err("number of ports on EBI module not specified");
- return(1);
- }
- if (p->u.module.v_id == 0) {
- dgap_err("EBI module id letter not specified");
- return(1);
- }
- return(0);
- }
- return(0);
-}
-
-/*
- * save a string somewhere
- */
-static char *dgap_savestring(char *s)
-{
- char *p;
- if ( (p = kmalloc(strlen(s) + 1, GFP_ATOMIC) ) != NULL) {
- strcpy(p, s);
- }
- return(p);
-}
-
-
-/*
- * Given a board pointer, returns whether we should use interrupts or not.
- */
-static uint dgap_config_get_useintr(struct board_t *bd)
-{
- struct cnode *p = NULL;
-
- if (!bd)
- return(0);
-
- for (p = bd->bd_config; p; p = p->next) {
- switch (p->type) {
- case INTRNODE:
- /*
- * check for pcxr types.
- */
- return p->u.useintr;
- default:
- break;
- }
- }
-
- /* If not found, then don't turn on interrupts. */
- return 0;
-}
-
-
-/*
- * Given a board pointer, returns whether we turn on altpin or not.
- */
-static uint dgap_config_get_altpin(struct board_t *bd)
-{
- struct cnode *p = NULL;
-
- if (!bd)
- return(0);
-
- for (p = bd->bd_config; p; p = p->next) {
- switch (p->type) {
- case ANODE:
- /*
- * check for pcxr types.
- */
- return p->u.altpin;
- default:
- break;
- }
- }
-
- /* If not found, then don't turn on interrupts. */
- return 0;
-}
-
-
-
-/*
- * Given a specific type of board, if found, detached link and
- * returns the first occurrence in the list.
- */
-static struct cnode *dgap_find_config(int type, int bus, int slot)
-{
- struct cnode *p, *prev = NULL, *prev2 = NULL, *found = NULL;
-
- p = &dgap_head;
-
- while (p->next != NULL) {
- prev = p;
- p = p->next;
-
- if (p->type == BNODE) {
-
- if (p->u.board.type == type) {
-
- if (p->u.board.v_pcibus && p->u.board.pcibus != bus) {
- DPR(("Found matching board, but wrong bus position. System says bus %d, we want bus %ld\n",
- bus, p->u.board.pcibus));
- continue;
- }
- if (p->u.board.v_pcislot && p->u.board.pcislot != slot) {
- DPR_INIT(("Found matching board, but wrong slot position. System says slot %d, we want slot %ld\n",
- slot, p->u.board.pcislot));
- continue;
- }
-
- DPR_INIT(("Matched type in config file\n"));
-
- found = p;
- /*
- * Keep walking thru the list till we find the next board.
- */
- while (p->next != NULL) {
- prev2 = p;
- p = p->next;
- if (p->type == BNODE) {
-
- /*
- * Mark the end of our 1 board chain of configs.
- */
- prev2->next = NULL;
-
- /*
- * Link the "next" board to the previous board,
- * effectively "unlinking" our board from the main config.
- */
- prev->next = p;
-
- return found;
- }
- }
- /*
- * It must be the last board in the list.
- */
- prev->next = NULL;
- return found;
- }
- }
- }
- return NULL;
-}
-
-/*
- * Given a board pointer, walks the config link, counting up
- * all ports user specified should be on the board.
- * (This does NOT mean they are all actually present right now tho)
- */
-static uint dgap_config_get_number_of_ports(struct board_t *bd)
-{
- int count = 0;
- struct cnode *p = NULL;
-
- if (!bd)
- return(0);
-
- for (p = bd->bd_config; p; p = p->next) {
-
- switch (p->type) {
- case BNODE:
- /*
- * check for pcxr types.
- */
- if (p->u.board.type > EPCFE)
- count += p->u.board.nport;
- break;
- case CNODE:
- count += p->u.conc.nport;
- break;
- case MNODE:
- count += p->u.module.nport;
- break;
- }
- }
- return (count);
-}
-
-static char *dgap_create_config_string(struct board_t *bd, char *string)
-{
- char *ptr = string;
- struct cnode *p = NULL;
- struct cnode *q = NULL;
- int speed;
-
- if (!bd) {
- *ptr = 0xff;
- return string;
- }
-
- for (p = bd->bd_config; p; p = p->next) {
-
- switch (p->type) {
- case LNODE:
- *ptr = '\0';
- ptr++;
- *ptr = p->u.line.speed;
- ptr++;
- break;
- case CNODE:
- /*
- * Because the EPC/con concentrators can have EM modules
- * hanging off of them, we have to walk ahead in the list
- * and keep adding the number of ports on each EM to the config.
- * UGH!
- */
- speed = p->u.conc.speed;
- q = p->next;
- if ((q != NULL) && (q->type == MNODE) ) {
- *ptr = (p->u.conc.nport + 0x80);
- ptr++;
- p = q;
- while ((q->next != NULL) && (q->next->type) == MNODE) {
- *ptr = (q->u.module.nport + 0x80);
- ptr++;
- p = q;
- q = q->next;
- }
- *ptr = q->u.module.nport;
- ptr++;
- } else {
- *ptr = p->u.conc.nport;
- ptr++;
- }
-
- *ptr = speed;
- ptr++;
- break;
- }
- }
-
- *ptr = 0xff;
- return string;
-}
-
-
-
-static char *dgap_get_config_letters(struct board_t *bd, char *string)
-{
- int found = FALSE;
- char *ptr = string;
- struct cnode *cptr = NULL;
- int len = 0;
- int left = MAXTTYNAMELEN;
-
- if (!bd) {
- return "<NULL>";
- }
-
- for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
-
- if ((cptr->type == BNODE) &&
- ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
- (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
- (cptr->u.board.type == PAPORT8))) {
-
- found = TRUE;
- }
-
- if (cptr->type == TNODE && found == TRUE) {
- char *ptr1;
- if (strstr(cptr->u.ttyname, "tty")) {
- ptr1 = cptr->u.ttyname;
- ptr1 += 3;
- }
- else {
- ptr1 = cptr->u.ttyname;
- }
- if (ptr1) {
- len = snprintf(ptr, left, "%s", ptr1);
- left -= len;
- ptr += len;
- if (left <= 0)
- break;
- }
- }
-
- if (cptr->type == CNODE) {
- if (cptr->u.conc.id) {
- len = snprintf(ptr, left, "%s", cptr->u.conc.id);
- left -= len;
- ptr += len;
- if (left <= 0)
- break;
- }
- }
-
- if (cptr->type == MNODE) {
- if (cptr->u.module.id) {
- len = snprintf(ptr, left, "%s", cptr->u.module.id);
- left -= len;
- ptr += len;
- if (left <= 0)
- break;
- }
- }
- }
-
- return string;
-}
+++ /dev/null
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- *
- *************************************************************************
- *
- * Driver includes
- *
- *************************************************************************/
-
-#ifndef __DGAP_DRIVER_H
-#define __DGAP_DRIVER_H
-
-#include <linux/types.h> /* To pick up the varions Linux types */
-#include <linux/tty.h> /* To pick up the various tty structs/defines */
-#include <linux/interrupt.h> /* For irqreturn_t type */
-
-#ifndef TRUE
-# define TRUE 1
-#endif
-
-#ifndef FALSE
-# define FALSE 0
-#endif
-
-/* Required for our shared headers! */
-typedef unsigned char uchar;
-
-#if !defined(TTY_FLIPBUF_SIZE)
-# define TTY_FLIPBUF_SIZE 512
-#endif
-
-/* Sparse stuff */
-# ifndef __user
-# define __user
-# define __kernel
-# define __safe
-# define __force
-# define __chk_user_ptr(x) (void)0
-# endif
-
-
-# define PARM_STR(VAR, INIT, PERM, DESC) \
- static char *VAR = INIT; \
- char *dgap_##VAR; \
- module_param(VAR, charp, PERM); \
- MODULE_PARM_DESC(VAR, DESC);
-
-# define PARM_INT(VAR, INIT, PERM, DESC) \
- static int VAR = INIT; \
- int dgap_##VAR; \
- module_param(VAR, int, PERM); \
- MODULE_PARM_DESC(VAR, DESC);
-
-# define PARM_ULONG(VAR, INIT, PERM, DESC) \
- static ulong VAR = INIT; \
- ulong dgap_##VAR; \
- module_param(VAR, long, PERM); \
- MODULE_PARM_DESC(VAR, DESC);
-
-/*************************************************************************
- *
- * Driver defines
- *
- *************************************************************************/
-
-/*
- * Driver identification, error and debugging statments
- *
- * In theory, you can change all occurrences of "digi" in the next
- * three lines, and the driver printk's will all automagically change.
- *
- * APR((fmt, args, ...)); Always prints message
- * DPR((fmt, args, ...)); Only prints if DGAP_TRACER is defined at
- * compile time and dgap_debug!=0
- */
-#define DG_NAME "dgap-1.3-16"
-#define DG_PART "40002347_C"
-
-#define PROCSTR "dgap" /* /proc entries */
-#define DEVSTR "/dev/dg/dgap" /* /dev entries */
-#define DRVSTR "dgap" /* Driver name string
- * displayed by APR */
-#define APR(args) do { PRINTF_TO_KMEM(args); printk(DRVSTR": "); printk args; \
- } while (0)
-#define RAPR(args) do { PRINTF_TO_KMEM(args); printk args; } while (0)
-
-#define TRC_TO_CONSOLE 1
-
-/*
- * defines from dgap_pci.h
- */
-#define PCIMAX 32 /* maximum number of PCI boards */
-
-#define DIGI_VID 0x114F
-
-#define PCI_DEVICE_EPC_DID 0x0002
-#define PCI_DEVICE_XEM_DID 0x0004
-#define PCI_DEVICE_XR_DID 0x0005
-#define PCI_DEVICE_CX_DID 0x0006
-#define PCI_DEVICE_XRJ_DID 0x0009 /* PLX-based Xr adapter */
-#define PCI_DEVICE_XR_IBM_DID 0x0011 /* IBM 8-port Async Adapter */
-#define PCI_DEVICE_XR_BULL_DID 0x0013 /* BULL 8-port Async Adapter */
-#define PCI_DEVICE_XR_SAIP_DID 0x001c /* SAIP card - Xr adapter */
-#define PCI_DEVICE_XR_422_DID 0x0012 /* Xr-422 */
-#define PCI_DEVICE_920_2_DID 0x0034 /* XR-Plus 920 K, 2 port */
-#define PCI_DEVICE_920_4_DID 0x0026 /* XR-Plus 920 K, 4 port */
-#define PCI_DEVICE_920_8_DID 0x0027 /* XR-Plus 920 K, 8 port */
-#define PCI_DEVICE_EPCJ_DID 0x000a /* PLX 9060 chip for PCI */
-#define PCI_DEVICE_CX_IBM_DID 0x001b /* IBM 128-port Async Adapter */
-#define PCI_DEVICE_920_8_HP_DID 0x0058 /* HP XR-Plus 920 K, 8 port */
-#define PCI_DEVICE_XEM_HP_DID 0x0059 /* HP Xem PCI */
-
-#define PCI_DEVICE_XEM_NAME "AccelePort XEM"
-#define PCI_DEVICE_CX_NAME "AccelePort CX"
-#define PCI_DEVICE_XR_NAME "AccelePort Xr"
-#define PCI_DEVICE_XRJ_NAME "AccelePort Xr (PLX)"
-#define PCI_DEVICE_XR_SAIP_NAME "AccelePort Xr (SAIP)"
-#define PCI_DEVICE_920_2_NAME "AccelePort Xr920 2 port"
-#define PCI_DEVICE_920_4_NAME "AccelePort Xr920 4 port"
-#define PCI_DEVICE_920_8_NAME "AccelePort Xr920 8 port"
-#define PCI_DEVICE_XR_422_NAME "AccelePort Xr 422"
-#define PCI_DEVICE_EPCJ_NAME "AccelePort EPC (PLX)"
-#define PCI_DEVICE_XR_BULL_NAME "AccelePort Xr (BULL)"
-#define PCI_DEVICE_XR_IBM_NAME "AccelePort Xr (IBM)"
-#define PCI_DEVICE_CX_IBM_NAME "AccelePort CX (IBM)"
-#define PCI_DEVICE_920_8_HP_NAME "AccelePort Xr920 8 port (HP)"
-#define PCI_DEVICE_XEM_HP_NAME "AccelePort XEM (HP)"
-
-/*
- * On the PCI boards, there is no IO space allocated
- * The I/O registers will be in the first 3 bytes of the
- * upper 2MB of the 4MB memory space. The board memory
- * will be mapped into the low 2MB of the 4MB memory space
- */
-
-/* Potential location of PCI Bios from E0000 to FFFFF*/
-#define PCI_BIOS_SIZE 0x00020000
-
-/* Size of Memory and I/O for PCI (4MB) */
-#define PCI_RAM_SIZE 0x00400000
-
-/* Size of Memory (2MB) */
-#define PCI_MEM_SIZE 0x00200000
-
-/* Max PCI Window Size (2MB) */
-#define PCI_WIN_SIZE 0x00200000
-
-#define PCI_WIN_SHIFT 21 /* 21 bits max */
-
-/* Offset of I/0 in Memory (2MB) */
-#define PCI_IO_OFFSET 0x00200000
-
-/* Size of IO (2MB) */
-#define PCI_IO_SIZE 0x00200000
-
-/*
- * Debugging levels can be set using debug insmod variable
- * They can also be compiled out completely.
- */
-
-#define DBG_INIT (dgap_debug & 0x01)
-#define DBG_BASIC (dgap_debug & 0x02)
-#define DBG_CORE (dgap_debug & 0x04)
-
-#define DBG_OPEN (dgap_debug & 0x08)
-#define DBG_CLOSE (dgap_debug & 0x10)
-#define DBG_READ (dgap_debug & 0x20)
-#define DBG_WRITE (dgap_debug & 0x40)
-
-#define DBG_IOCTL (dgap_debug & 0x80)
-
-#define DBG_PROC (dgap_debug & 0x100)
-#define DBG_PARAM (dgap_debug & 0x200)
-#define DBG_PSCAN (dgap_debug & 0x400)
-#define DBG_EVENT (dgap_debug & 0x800)
-
-#define DBG_DRAIN (dgap_debug & 0x1000)
-#define DBG_CARR (dgap_debug & 0x2000)
-
-#define DBG_MGMT (dgap_debug & 0x4000)
-
-
-#if defined(DGAP_TRACER)
-
-# if defined(TRC_TO_KMEM)
-/* Choose one: */
-# define TRC_ON_OVERFLOW_WRAP_AROUND
-# undef TRC_ON_OVERFLOW_SHIFT_BUFFER
-# endif //TRC_TO_KMEM
-
-# define TRC_MAXMSG 1024
-# define TRC_OVERFLOW "(OVERFLOW)"
-# define TRC_DTRC "/usr/bin/dtrc"
-
-#if defined TRC_TO_CONSOLE
-#define PRINTF_TO_CONSOLE(args) { printk(DRVSTR": "); printk args; }
-#else //!defined TRACE_TO_CONSOLE
-#define PRINTF_TO_CONSOLE(args)
-#endif
-
-#if defined TRC_TO_KMEM
-#define PRINTF_TO_KMEM(args) dgap_tracef args
-#else //!defined TRC_TO_KMEM
-#define PRINTF_TO_KMEM(args)
-#endif
-
-#define TRC(args) { PRINTF_TO_KMEM(args); PRINTF_TO_CONSOLE(args) }
-
-# define DPR_INIT(ARGS) if (DBG_INIT) TRC(ARGS)
-# define DPR_BASIC(ARGS) if (DBG_BASIC) TRC(ARGS)
-# define DPR_CORE(ARGS) if (DBG_CORE) TRC(ARGS)
-# define DPR_OPEN(ARGS) if (DBG_OPEN) TRC(ARGS)
-# define DPR_CLOSE(ARGS) if (DBG_CLOSE) TRC(ARGS)
-# define DPR_READ(ARGS) if (DBG_READ) TRC(ARGS)
-# define DPR_WRITE(ARGS) if (DBG_WRITE) TRC(ARGS)
-# define DPR_IOCTL(ARGS) if (DBG_IOCTL) TRC(ARGS)
-# define DPR_PROC(ARGS) if (DBG_PROC) TRC(ARGS)
-# define DPR_PARAM(ARGS) if (DBG_PARAM) TRC(ARGS)
-# define DPR_PSCAN(ARGS) if (DBG_PSCAN) TRC(ARGS)
-# define DPR_EVENT(ARGS) if (DBG_EVENT) TRC(ARGS)
-# define DPR_DRAIN(ARGS) if (DBG_DRAIN) TRC(ARGS)
-# define DPR_CARR(ARGS) if (DBG_CARR) TRC(ARGS)
-# define DPR_MGMT(ARGS) if (DBG_MGMT) TRC(ARGS)
-
-# define DPR(ARGS) if (dgap_debug) TRC(ARGS)
-# define P(X) dgap_tracef(#X "=%p\n", X)
-# define X(X) dgap_tracef(#X "=%x\n", X)
-
-#else//!defined DGAP_TRACER
-
-#define PRINTF_TO_KMEM(args)
-# define TRC(ARGS)
-# define DPR_INIT(ARGS)
-# define DPR_BASIC(ARGS)
-# define DPR_CORE(ARGS)
-# define DPR_OPEN(ARGS)
-# define DPR_CLOSE(ARGS)
-# define DPR_READ(ARGS)
-# define DPR_WRITE(ARGS)
-# define DPR_IOCTL(ARGS)
-# define DPR_PROC(ARGS)
-# define DPR_PARAM(ARGS)
-# define DPR_PSCAN(ARGS)
-# define DPR_EVENT(ARGS)
-# define DPR_DRAIN(ARGS)
-# define DPR_CARR(ARGS)
-# define DPR_MGMT(ARGS)
-
-# define DPR(args)
-
-#endif//DGAP_TRACER
-
-/* Number of boards we support at once. */
-#define MAXBOARDS 32
-#define MAXPORTS 224
-#define MAXTTYNAMELEN 200
-
-/* Our 3 magic numbers for our board, channel and unit structs */
-#define DGAP_BOARD_MAGIC 0x5c6df104
-#define DGAP_CHANNEL_MAGIC 0x6c6df104
-#define DGAP_UNIT_MAGIC 0x7c6df104
-
-/* Serial port types */
-#define DGAP_SERIAL 0
-#define DGAP_PRINT 1
-
-#define SERIAL_TYPE_NORMAL 1
-
-/* 4 extra for alignment play space */
-#define WRITEBUFLEN ((4096) + 4)
-#define MYFLIPLEN N_TTY_BUF_SIZE
-
-#define SBREAK_TIME 0x25
-#define U2BSIZE 0x400
-
-#define dgap_jiffies_from_ms(a) (((a) * HZ) / 1000)
-
-/*
- * Our major for the mgmt devices.
- *
- * We can use 22, because Digi was allocated 22 and 23 for the epca driver.
- * 22 has now become obsolete now that the "cu" devices have
- * been removed from 2.6.
- * Also, this *IS* the epca driver, just PCI only now.
- */
-#ifndef DIGI_DGAP_MAJOR
-# define DIGI_DGAP_MAJOR 22
-#endif
-
-/*
- * The parameters we use to define the periods of the moving averages.
- */
-#define MA_PERIOD (HZ / 10)
-#define SMA_DUR (1 * HZ)
-#define EMA_DUR (1 * HZ)
-#define SMA_NPERIODS (SMA_DUR / MA_PERIOD)
-#define EMA_NPERIODS (EMA_DUR / MA_PERIOD)
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially. This is the same structure that is defined
- * as the default in tty_io.c with the same settings overriden as in serial.c
- *
- * In short, this should match the internal serial ports' defaults.
- */
-#define DEFAULT_IFLAGS (ICRNL | IXON)
-#define DEFAULT_OFLAGS (OPOST | ONLCR)
-#define DEFAULT_CFLAGS (B9600 | CS8 | CREAD | HUPCL | CLOCAL)
-#define DEFAULT_LFLAGS (ISIG | ICANON | ECHO | ECHOE | ECHOK | \
- ECHOCTL | ECHOKE | IEXTEN)
-
-#ifndef _POSIX_VDISABLE
-#define _POSIX_VDISABLE '\0'
-#endif
-
-#define SNIFF_MAX 65536 /* Sniff buffer size (2^n) */
-#define SNIFF_MASK (SNIFF_MAX - 1) /* Sniff wrap mask */
-
-#define VPDSIZE (512)
-
-/*
- * Lock function/defines.
- * Makes spotting lock/unlock locations easier.
- */
-# define DGAP_SPINLOCK_INIT(x) spin_lock_init(&(x))
-# define DGAP_LOCK(x,y) spin_lock_irqsave(&(x), y)
-# define DGAP_UNLOCK(x,y) spin_unlock_irqrestore(&(x), y)
-# define DGAP_TRYLOCK(x,y) spin_trylock(&(x))
-
-/************************************************************************
- * FEP memory offsets
- ************************************************************************/
-#define START 0x0004L /* Execution start address */
-
-#define CMDBUF 0x0d10L /* Command (cm_t) structure offset */
-#define CMDSTART 0x0400L /* Start of command buffer */
-#define CMDMAX 0x0800L /* End of command buffer */
-
-#define EVBUF 0x0d18L /* Event (ev_t) structure */
-#define EVSTART 0x0800L /* Start of event buffer */
-#define EVMAX 0x0c00L /* End of event buffer */
-#define FEP5_PLUS 0x0E40 /* ASCII '5' and ASCII 'A' is here */
-#define ECS_SEG 0x0E44 /* Segment of the extended channel structure */
-#define LINE_SPEED 0x10 /* Offset into ECS_SEG for line speed */
- /* if the fep has extended capabilities */
-
-/* BIOS MAGIC SPOTS */
-#define ERROR 0x0C14L /* BIOS error code */
-#define SEQUENCE 0x0C12L /* BIOS sequence indicator */
-#define POSTAREA 0x0C00L /* POST complete message area */
-
-/* FEP MAGIC SPOTS */
-#define FEPSTAT POSTAREA /* OS here when FEP comes up */
-#define NCHAN 0x0C02L /* number of ports FEP sees */
-#define PANIC 0x0C10L /* PANIC area for FEP */
-#define KMEMEM 0x0C30L /* Memory for KME use */
-#define CONFIG 0x0CD0L /* Concentrator configuration info */
-#define CONFIGSIZE 0x0030 /* configuration info size */
-#define DOWNREQ 0x0D00 /* Download request buffer pointer */
-
-#define CHANBUF 0x1000L /* Async channel (bs_t) structs */
-#define FEPOSSIZE 0x1FFF /* 8K FEPOS */
-
-#define XEMPORTS 0xC02 /*
- * Offset in board memory where FEP5 stores
- * how many ports it has detected.
- * NOTE: FEP5 reports 64 ports when the user
- * has the cable in EBI OUT instead of EBI IN.
- */
-
-#define FEPCLR 0x00
-#define FEPMEM 0x02
-#define FEPRST 0x04
-#define FEPINT 0x08
-#define FEPMASK 0x0e
-#define FEPWIN 0x80
-
-#define LOWMEM 0x0100
-#define HIGHMEM 0x7f00
-
-#define FEPTIMEOUT 200000
-
-#define ENABLE_INTR 0x0e04 /* Enable interrupts flag */
-#define FEPPOLL_MIN 1 /* minimum of 1 millisecond */
-#define FEPPOLL_MAX 20 /* maximum of 20 milliseconds */
-#define FEPPOLL 0x0c26 /* Fep event poll interval */
-
-#define IALTPIN 0x0080 /* Input flag to swap DSR <-> DCD */
-
-/************************************************************************
- * FEP supported functions
- ************************************************************************/
-#define SRLOW 0xe0 /* Set receive low water */
-#define SRHIGH 0xe1 /* Set receive high water */
-#define FLUSHTX 0xe2 /* Flush transmit buffer */
-#define PAUSETX 0xe3 /* Pause data transmission */
-#define RESUMETX 0xe4 /* Resume data transmission */
-#define SMINT 0xe5 /* Set Modem Interrupt */
-#define SAFLOWC 0xe6 /* Set Aux. flow control chars */
-#define SBREAK 0xe8 /* Send break */
-#define SMODEM 0xe9 /* Set 8530 modem control lines */
-#define SIFLAG 0xea /* Set UNIX iflags */
-#define SFLOWC 0xeb /* Set flow control characters */
-#define STLOW 0xec /* Set transmit low water mark */
-#define RPAUSE 0xee /* Pause receive */
-#define RRESUME 0xef /* Resume receive */
-#define CHRESET 0xf0 /* Reset Channel */
-#define BUFSETALL 0xf2 /* Set Tx & Rx buffer size avail*/
-#define SOFLAG 0xf3 /* Set UNIX oflags */
-#define SHFLOW 0xf4 /* Set hardware handshake */
-#define SCFLAG 0xf5 /* Set UNIX cflags */
-#define SVNEXT 0xf6 /* Set VNEXT character */
-#define SPINTFC 0xfc /* Reserved */
-#define SCOMMODE 0xfd /* Set RS232/422 mode */
-
-
-/************************************************************************
- * Modes for SCOMMODE
- ************************************************************************/
-#define MODE_232 0x00
-#define MODE_422 0x01
-
-
-/************************************************************************
- * Event flags.
- ************************************************************************/
-#define IFBREAK 0x01 /* Break received */
-#define IFTLW 0x02 /* Transmit low water */
-#define IFTEM 0x04 /* Transmitter empty */
-#define IFDATA 0x08 /* Receive data present */
-#define IFMODEM 0x20 /* Modem status change */
-
-/************************************************************************
- * Modem flags
- ************************************************************************/
-# define DM_RTS 0x02 /* Request to send */
-# define DM_CD 0x80 /* Carrier detect */
-# define DM_DSR 0x20 /* Data set ready */
-# define DM_CTS 0x10 /* Clear to send */
-# define DM_RI 0x40 /* Ring indicator */
-# define DM_DTR 0x01 /* Data terminal ready */
-
-/*
- * defines from dgap_conf.h
- */
-#define NULLNODE 0 /* header node, not used */
-#define BNODE 1 /* Board node */
-#define LNODE 2 /* Line node */
-#define CNODE 3 /* Concentrator node */
-#define MNODE 4 /* EBI Module node */
-#define TNODE 5 /* tty name prefix node */
-#define CUNODE 6 /* cu name prefix (non-SCO) */
-#define PNODE 7 /* trans. print prefix node */
-#define JNODE 8 /* maJor number node */
-#define ANODE 9 /* altpin */
-#define TSNODE 10 /* tty structure size */
-#define CSNODE 11 /* channel structure size */
-#define BSNODE 12 /* board structure size */
-#define USNODE 13 /* unit schedule structure size */
-#define FSNODE 14 /* f2200 structure size */
-#define VSNODE 15 /* size of VPIX structures */
-#define INTRNODE 16 /* enable interrupt */
-
-/* Enumeration of tokens */
-#define BEGIN 1
-#define END 2
-#define BOARD 10
-
-#define EPCFS 11 /* start of EPC family definitions */
-#define ICX 11
-#define MCX 13
-#define PCX 14
-#define IEPC 15
-#define EEPC 16
-#define MEPC 17
-#define IPCM 18
-#define EPCM 19
-#define MPCM 20
-#define PEPC 21
-#define PPCM 22
-#ifdef CP
-#define ICP 23
-#define ECP 24
-#define MCP 25
-#endif
-#define EPCFE 25 /* end of EPC family definitions */
-#define PC2E 26
-#define PC4E 27
-#define PC4E8K 28
-#define PC8E 29
-#define PC8E8K 30
-#define PC16E 31
-#define MC2E8K 34
-#define MC4E8K 35
-#define MC8E8K 36
-
-#define AVANFS 42 /* start of Avanstar family definitions */
-#define A8P 42
-#define A16P 43
-#define AVANFE 43 /* end of Avanstar family definitions */
-
-#define DA2000FS 44 /* start of AccelePort 2000 family definitions */
-#define DA22 44 /* AccelePort 2002 */
-#define DA24 45 /* AccelePort 2004 */
-#define DA28 46 /* AccelePort 2008 */
-#define DA216 47 /* AccelePort 2016 */
-#define DAR4 48 /* AccelePort RAS 4 port */
-#define DAR8 49 /* AccelePort RAS 8 port */
-#define DDR24 50 /* DataFire RAS 24 port */
-#define DDR30 51 /* DataFire RAS 30 port */
-#define DDR48 52 /* DataFire RAS 48 port */
-#define DDR60 53 /* DataFire RAS 60 port */
-#define DA2000FE 53 /* end of AccelePort 2000/RAS family definitions */
-
-#define PCXRFS 106 /* start of PCXR family definitions */
-#define APORT4 106
-#define APORT8 107
-#define PAPORT4 108
-#define PAPORT8 109
-#define APORT4_920I 110
-#define APORT8_920I 111
-#define APORT4_920P 112
-#define APORT8_920P 113
-#define APORT2_920P 114
-#define PCXRFE 117 /* end of PCXR family definitions */
-
-#define LINE 82
-#ifdef T1
-#define T1M 83
-#define E1M 84
-#endif
-#define CONC 64
-#define CX 65
-#define EPC 66
-#define MOD 67
-#define PORTS 68
-#define METHOD 69
-#define CUSTOM 70
-#define BASIC 71
-#define STATUS 72
-#define MODEM 73
-/* The following tokens can appear in multiple places */
-#define SPEED 74
-#define NPORTS 75
-#define ID 76
-#define CABLE 77
-#define CONNECT 78
-#define IO 79
-#define MEM 80
-#define DPSZ 81
-
-#define TTYN 90
-#define CU 91
-#define PRINT 92
-#define XPRINT 93
-#define CMAJOR 94
-#define ALTPIN 95
-#define STARTO 96
-#define USEINTR 97
-#define PCIINFO 98
-
-#define TTSIZ 100
-#define CHSIZ 101
-#define BSSIZ 102
-#define UNTSIZ 103
-#define F2SIZ 104
-#define VPSIZ 105
-
-#define TOTAL_BOARD 2
-#define CURRENT_BRD 4
-#define BOARD_TYPE 6
-#define IO_ADDRESS 8
-#define MEM_ADDRESS 10
-
-#define FIELDS_PER_PAGE 18
-
-#define TB_FIELD 1
-#define CB_FIELD 3
-#define BT_FIELD 5
-#define IO_FIELD 7
-#define ID_FIELD 8
-#define ME_FIELD 9
-#define TTY_FIELD 11
-#define CU_FIELD 13
-#define PR_FIELD 15
-#define MPR_FIELD 17
-
-#define MAX_FIELD 512
-
-#define INIT 0
-#define NITEMS 128
-#define MAX_ITEM 512
-
-#define DSCRINST 1
-#define DSCRNUM 3
-#define ALTPINQ 5
-#define SSAVE 7
-
-#define DSCR "32"
-#define ONETONINE "123456789"
-#define ALL "1234567890"
-
-/*
- * All the possible states the driver can be while being loaded.
- */
-enum {
- DRIVER_INITIALIZED = 0,
- DRIVER_NEED_CONFIG_LOAD,
- DRIVER_REQUESTED_CONFIG,
- DRIVER_READY
-};
-
-/*
- * All the possible states the board can be while booting up.
- */
-enum {
- BOARD_FAILED = 0,
- CONFIG_NOT_FOUND,
- BOARD_FOUND,
- NEED_RESET,
- FINISHED_RESET,
- NEED_CONFIG,
- FINISHED_CONFIG,
- NEED_DEVICE_CREATION,
- REQUESTED_DEVICE_CREATION,
- FINISHED_DEVICE_CREATION,
- NEED_BIOS_LOAD,
- REQUESTED_BIOS,
- WAIT_BIOS_LOAD,
- FINISHED_BIOS_LOAD,
- NEED_FEP_LOAD,
- REQUESTED_FEP,
- WAIT_FEP_LOAD,
- FINISHED_FEP_LOAD,
- NEED_PROC_CREATION,
- FINISHED_PROC_CREATION,
- BOARD_READY
-};
-
-/*
- * All the possible states that a requested concentrator image can be in.
- */
-enum {
- NO_PENDING_CONCENTRATOR_REQUESTS = 0,
- NEED_CONCENTRATOR,
- REQUESTED_CONCENTRATOR
-};
-
-
-
-/*
- * Modem line constants are defined as macros because DSR and
- * DCD are swapable using the ditty altpin option.
- */
-#define D_CD(ch) ch->ch_cd /* Carrier detect */
-#define D_DSR(ch) ch->ch_dsr /* Data set ready */
-#define D_RTS(ch) DM_RTS /* Request to send */
-#define D_CTS(ch) DM_CTS /* Clear to send */
-#define D_RI(ch) DM_RI /* Ring indicator */
-#define D_DTR(ch) DM_DTR /* Data terminal ready */
-
-
-/*************************************************************************
- *
- * Structures and closely related defines.
- *
- *************************************************************************/
-
-
-/*
- * A structure to hold a statistics counter. We also
- * compute moving averages for this counter.
- */
-struct macounter
-{
- u32 cnt; /* Total count */
- ulong accum; /* Acuumulator per period */
- ulong sma; /* Simple moving average */
- ulong ema; /* Exponential moving average */
-};
-
-
-/************************************************************************
- * Device flag definitions for bd_flags.
- ************************************************************************/
-#define BD_FEP5PLUS 0x0001 /* Supports FEP5 Plus commands */
-#define BD_HAS_VPD 0x0002 /* Board has VPD info available */
-
-
-/*
- * Per-board information
- */
-struct board_t
-{
- int magic; /* Board Magic number. */
- int boardnum; /* Board number: 0-3 */
- int firstminor; /* First minor, e.g. 0, 30, 60 */
-
- int type; /* Type of board */
- char *name; /* Product Name */
- struct pci_dev *pdev; /* Pointer to the pci_dev struct */
- u16 vendor; /* PCI vendor ID */
- u16 device; /* PCI device ID */
- u16 subvendor; /* PCI subsystem vendor ID */
- u16 subdevice; /* PCI subsystem device ID */
- uchar rev; /* PCI revision ID */
- uint pci_bus; /* PCI bus value */
- uint pci_slot; /* PCI slot value */
- u16 maxports; /* MAX ports this board can handle */
- uchar vpd[VPDSIZE]; /* VPD of board, if found */
- u32 bd_flags; /* Board flags */
-
- spinlock_t bd_lock; /* Used to protect board */
-
- u32 state; /* State of card. */
- wait_queue_head_t state_wait; /* Place to sleep on for state change */
-
- struct tasklet_struct helper_tasklet; /* Poll helper tasklet */
-
- u32 wait_for_bios;
- u32 wait_for_fep;
-
- struct cnode * bd_config; /* Config of board */
-
- u16 nasync; /* Number of ports on card */
-
- u32 use_interrupts; /* Should we be interrupt driven? */
- ulong irq; /* Interrupt request number */
- ulong intr_count; /* Count of interrupts */
- u32 intr_used; /* Non-zero if using interrupts */
- u32 intr_running; /* Non-zero if FEP knows its doing interrupts */
-
- ulong port; /* Start of base io port of the card */
- ulong port_end; /* End of base io port of the card */
- ulong membase; /* Start of base memory of the card */
- ulong membase_end; /* End of base memory of the card */
-
- uchar *re_map_port; /* Remapped io port of the card */
- uchar *re_map_membase;/* Remapped memory of the card */
-
- uchar runwait; /* # Processes waiting for FEP */
- uchar inhibit_poller; /* Tells the poller to leave us alone */
-
- struct channel_t *channels[MAXPORTS]; /* array of pointers to our channels. */
-
- struct tty_driver *SerialDriver;
- char SerialName[200];
- struct tty_driver *PrintDriver;
- char PrintName[200];
-
- u32 dgap_Major_Serial_Registered;
- u32 dgap_Major_TransparentPrint_Registered;
-
- u32 dgap_Serial_Major;
- u32 dgap_TransparentPrint_Major;
-
- struct bs_t *bd_bs; /* Base structure pointer */
-
- char *flipbuf; /* Our flip buffer, alloced if board is found */
- char *flipflagbuf; /* Our flip flag buffer, alloced if board is found */
-
- u16 dpatype; /* The board "type", as defined by DPA */
- u16 dpastatus; /* The board "status", as defined by DPA */
- wait_queue_head_t kme_wait; /* Needed for DPA support */
-
- u32 conc_dl_status; /* Status of any pending conc download */
- /*
- * Mgmt data.
- */
- char *msgbuf_head;
- char *msgbuf;
-};
-
-
-
-/************************************************************************
- * Unit flag definitions for un_flags.
- ************************************************************************/
-#define UN_ISOPEN 0x0001 /* Device is open */
-#define UN_CLOSING 0x0002 /* Line is being closed */
-#define UN_IMM 0x0004 /* Service immediately */
-#define UN_BUSY 0x0008 /* Some work this channel */
-#define UN_BREAKI 0x0010 /* Input break received */
-#define UN_PWAIT 0x0020 /* Printer waiting for terminal */
-#define UN_TIME 0x0040 /* Waiting on time */
-#define UN_EMPTY 0x0080 /* Waiting output queue empty */
-#define UN_LOW 0x0100 /* Waiting output low water mark*/
-#define UN_EXCL_OPEN 0x0200 /* Open for exclusive use */
-#define UN_WOPEN 0x0400 /* Device waiting for open */
-#define UN_WIOCTL 0x0800 /* Device waiting for open */
-#define UN_HANGUP 0x8000 /* Carrier lost */
-
-struct device;
-
-/************************************************************************
- * Structure for terminal or printer unit.
- ************************************************************************/
-struct un_t {
- int magic; /* Unit Magic Number. */
- struct channel_t *un_ch;
- u32 un_time;
- u32 un_type;
- u32 un_open_count; /* Counter of opens to port */
- struct tty_struct *un_tty;/* Pointer to unit tty structure */
- u32 un_flags; /* Unit flags */
- wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
- u32 un_dev; /* Minor device number */
- tcflag_t un_oflag; /* oflags being done on board */
- tcflag_t un_lflag; /* lflags being done on board */
- struct device *un_sysfs;
-};
-
-
-/************************************************************************
- * Device flag definitions for ch_flags.
- ************************************************************************/
-#define CH_PRON 0x0001 /* Printer on string */
-#define CH_OUT 0x0002 /* Dial-out device open */
-#define CH_STOP 0x0004 /* Output is stopped */
-#define CH_STOPI 0x0008 /* Input is stopped */
-#define CH_CD 0x0010 /* Carrier is present */
-#define CH_FCAR 0x0020 /* Carrier forced on */
-
-#define CH_RXBLOCK 0x0080 /* Enable rx blocked flag */
-#define CH_WLOW 0x0100 /* Term waiting low event */
-#define CH_WEMPTY 0x0200 /* Term waiting empty event */
-#define CH_RENABLE 0x0400 /* Buffer just emptied */
-#define CH_RACTIVE 0x0800 /* Process active in xxread() */
-#define CH_RWAIT 0x1000 /* Process waiting in xxread() */
-#define CH_BAUD0 0x2000 /* Used for checking B0 transitions */
-#define CH_HANGUP 0x8000 /* Hangup received */
-
-/*
- * Definitions for ch_sniff_flags
- */
-#define SNIFF_OPEN 0x1
-#define SNIFF_WAIT_DATA 0x2
-#define SNIFF_WAIT_SPACE 0x4
-
-
-/************************************************************************
- *** Definitions for Digi ditty(1) command.
- ************************************************************************/
-
-
-/*
- * Copyright (c) 1988-96 Digi International Inc., All Rights Reserved.
- */
-
-/************************************************************************
- * This module provides application access to special Digi
- * serial line enhancements which are not standard UNIX(tm) features.
- ************************************************************************/
-
-#if !defined(TIOCMODG)
-
-#define TIOCMODG ('d'<<8) | 250 /* get modem ctrl state */
-#define TIOCMODS ('d'<<8) | 251 /* set modem ctrl state */
-
-#ifndef TIOCM_LE
-#define TIOCM_LE 0x01 /* line enable */
-#define TIOCM_DTR 0x02 /* data terminal ready */
-#define TIOCM_RTS 0x04 /* request to send */
-#define TIOCM_ST 0x08 /* secondary transmit */
-#define TIOCM_SR 0x10 /* secondary receive */
-#define TIOCM_CTS 0x20 /* clear to send */
-#define TIOCM_CAR 0x40 /* carrier detect */
-#define TIOCM_RNG 0x80 /* ring indicator */
-#define TIOCM_DSR 0x100 /* data set ready */
-#define TIOCM_RI TIOCM_RNG /* ring (alternate) */
-#define TIOCM_CD TIOCM_CAR /* carrier detect (alt) */
-#endif
-
-#endif
-
-#if !defined(TIOCMSET)
-#define TIOCMSET ('d'<<8) | 252 /* set modem ctrl state */
-#define TIOCMGET ('d'<<8) | 253 /* set modem ctrl state */
-#endif
-
-#if !defined(TIOCMBIC)
-#define TIOCMBIC ('d'<<8) | 254 /* set modem ctrl state */
-#define TIOCMBIS ('d'<<8) | 255 /* set modem ctrl state */
-#endif
-
-
-#if !defined(TIOCSDTR)
-#define TIOCSDTR ('e'<<8) | 0 /* set DTR */
-#define TIOCCDTR ('e'<<8) | 1 /* clear DTR */
-#endif
-
-/************************************************************************
- * Ioctl command arguments for DIGI parameters.
- ************************************************************************/
-#define DIGI_GETA ('e'<<8) | 94 /* Read params */
-
-#define DIGI_SETA ('e'<<8) | 95 /* Set params */
-#define DIGI_SETAW ('e'<<8) | 96 /* Drain & set params */
-#define DIGI_SETAF ('e'<<8) | 97 /* Drain, flush & set params */
-
-#define DIGI_KME ('e'<<8) | 98 /* Read/Write Host */
- /* Adapter Memory */
-
-#define DIGI_GETFLOW ('e'<<8) | 99 /* Get startc/stopc flow */
- /* control characters */
-#define DIGI_SETFLOW ('e'<<8) | 100 /* Set startc/stopc flow */
- /* control characters */
-#define DIGI_GETAFLOW ('e'<<8) | 101 /* Get Aux. startc/stopc */
- /* flow control chars */
-#define DIGI_SETAFLOW ('e'<<8) | 102 /* Set Aux. startc/stopc */
- /* flow control chars */
-
-#define DIGI_GEDELAY ('d'<<8) | 246 /* Get edelay */
-#define DIGI_SEDELAY ('d'<<8) | 247 /* Set edelay */
-
-struct digiflow_t {
- unsigned char startc; /* flow cntl start char */
- unsigned char stopc; /* flow cntl stop char */
-};
-
-
-#ifdef FLOW_2200
-#define F2200_GETA ('e'<<8) | 104 /* Get 2x36 flow cntl flags */
-#define F2200_SETAW ('e'<<8) | 105 /* Set 2x36 flow cntl flags */
-#define F2200_MASK 0x03 /* 2200 flow cntl bit mask */
-#define FCNTL_2200 0x01 /* 2x36 terminal flow cntl */
-#define PCNTL_2200 0x02 /* 2x36 printer flow cntl */
-#define F2200_XON 0xf8
-#define P2200_XON 0xf9
-#define F2200_XOFF 0xfa
-#define P2200_XOFF 0xfb
-
-#define FXOFF_MASK 0x03 /* 2200 flow status mask */
-#define RCVD_FXOFF 0x01 /* 2x36 Terminal XOFF rcvd */
-#define RCVD_PXOFF 0x02 /* 2x36 Printer XOFF rcvd */
-#endif
-
-/************************************************************************
- * Values for digi_flags
- ************************************************************************/
-#define DIGI_IXON 0x0001 /* Handle IXON in the FEP */
-#define DIGI_FAST 0x0002 /* Fast baud rates */
-#define RTSPACE 0x0004 /* RTS input flow control */
-#define CTSPACE 0x0008 /* CTS output flow control */
-#define DSRPACE 0x0010 /* DSR output flow control */
-#define DCDPACE 0x0020 /* DCD output flow control */
-#define DTRPACE 0x0040 /* DTR input flow control */
-#define DIGI_COOK 0x0080 /* Cooked processing done in FEP */
-#define DIGI_FORCEDCD 0x0100 /* Force carrier */
-#define DIGI_ALTPIN 0x0200 /* Alternate RJ-45 pin config */
-#define DIGI_AIXON 0x0400 /* Aux flow control in fep */
-#define DIGI_PRINTER 0x0800 /* Hold port open for flow cntrl*/
-#define DIGI_PP_INPUT 0x1000 /* Change parallel port to input*/
-#define DIGI_DTR_TOGGLE 0x2000 /* Support DTR Toggle */
-#define DIGI_422 0x4000 /* for 422/232 selectable panel */
-#define DIGI_RTS_TOGGLE 0x8000 /* Support RTS Toggle */
-
-/************************************************************************
- * These options are not supported on the comxi.
- ************************************************************************/
-#define DIGI_COMXI (DIGI_FAST|DIGI_COOK|DSRPACE|DCDPACE|DTRPACE)
-
-#define DIGI_PLEN 28 /* String length */
-#define DIGI_TSIZ 10 /* Terminal string len */
-
-/************************************************************************
- * Structure used with ioctl commands for DIGI parameters.
- ************************************************************************/
-struct digi_t {
- unsigned short digi_flags; /* Flags (see above) */
- unsigned short digi_maxcps; /* Max printer CPS */
- unsigned short digi_maxchar; /* Max chars in print queue */
- unsigned short digi_bufsize; /* Buffer size */
- unsigned char digi_onlen; /* Length of ON string */
- unsigned char digi_offlen; /* Length of OFF string */
- char digi_onstr[DIGI_PLEN]; /* Printer on string */
- char digi_offstr[DIGI_PLEN]; /* Printer off string */
- char digi_term[DIGI_TSIZ]; /* terminal string */
-};
-
-/************************************************************************
- * KME definitions and structures.
- ************************************************************************/
-#define RW_IDLE 0 /* Operation complete */
-#define RW_READ 1 /* Read Concentrator Memory */
-#define RW_WRITE 2 /* Write Concentrator Memory */
-
-struct rw_t {
- unsigned char rw_req; /* Request type */
- unsigned char rw_board; /* Host Adapter board number */
- unsigned char rw_conc; /* Concentrator number */
- unsigned char rw_reserved; /* Reserved for expansion */
- unsigned long rw_addr; /* Address in concentrator */
- unsigned short rw_size; /* Read/write request length */
- unsigned char rw_data[128]; /* Data to read/write */
-};
-
-/***********************************************************************
- * Shrink Buffer and Board Information definitions and structures.
-
- ************************************************************************/
- /* Board type return codes */
-#define PCXI_TYPE 1 /* Board type at the designated port is a PC/Xi */
-#define PCXM_TYPE 2 /* Board type at the designated port is a PC/Xm */
-#define PCXE_TYPE 3 /* Board type at the designated port is a PC/Xe */
-#define MCXI_TYPE 4 /* Board type at the designated port is a MC/Xi */
-#define COMXI_TYPE 5 /* Board type at the designated port is a COM/Xi */
-
- /* Non-Zero Result codes. */
-#define RESULT_NOBDFND 1 /* A Digi product at that port is not config installed */
-#define RESULT_NODESCT 2 /* A memory descriptor was not obtainable */
-#define RESULT_NOOSSIG 3 /* FEP/OS signature was not detected on the board */
-#define RESULT_TOOSML 4 /* Too small an area to shrink. */
-#define RESULT_NOCHAN 5 /* Channel structure for the board was not found */
-
-struct shrink_buf_struct {
- unsigned long shrink_buf_vaddr; /* Virtual address of board */
- unsigned long shrink_buf_phys; /* Physical address of board */
- unsigned long shrink_buf_bseg; /* Amount of board memory */
- unsigned long shrink_buf_hseg; /* '186 Beginning of Dual-Port */
-
- unsigned long shrink_buf_lseg; /* '186 Beginning of freed memory */
- unsigned long shrink_buf_mseg; /* Linear address from start of
- dual-port were freed memory
- begins, host viewpoint. */
-
- unsigned long shrink_buf_bdparam; /* Parameter for xxmemon and
- xxmemoff */
-
- unsigned long shrink_buf_reserva; /* Reserved */
- unsigned long shrink_buf_reservb; /* Reserved */
- unsigned long shrink_buf_reservc; /* Reserved */
- unsigned long shrink_buf_reservd; /* Reserved */
-
- unsigned char shrink_buf_result; /* Reason for call failing
- Zero is Good return */
- unsigned char shrink_buf_init; /* Non-Zero if it caused an
- xxinit call. */
-
- unsigned char shrink_buf_anports; /* Number of async ports */
- unsigned char shrink_buf_snports; /* Number of sync ports */
- unsigned char shrink_buf_type; /* Board type 1 = PC/Xi,
- 2 = PC/Xm,
- 3 = PC/Xe
- 4 = MC/Xi
- 5 = COMX/i */
- unsigned char shrink_buf_card; /* Card number */
-
-};
-
-/************************************************************************
- * Structure to get driver status information
- ************************************************************************/
-struct digi_dinfo {
- unsigned long dinfo_nboards; /* # boards configured */
- char dinfo_reserved[12]; /* for future expansion */
- char dinfo_version[16]; /* driver version */
-};
-
-#define DIGI_GETDD ('d'<<8) | 248 /* get driver info */
-
-/************************************************************************
- * Structure used with ioctl commands for per-board information
- *
- * physsize and memsize differ when board has "windowed" memory
- ************************************************************************/
-struct digi_info {
- unsigned long info_bdnum; /* Board number (0 based) */
- unsigned long info_ioport; /* io port address */
- unsigned long info_physaddr; /* memory address */
- unsigned long info_physsize; /* Size of host mem window */
- unsigned long info_memsize; /* Amount of dual-port mem */
- /* on board */
- unsigned short info_bdtype; /* Board type */
- unsigned short info_nports; /* number of ports */
- char info_bdstate; /* board state */
- char info_reserved[7]; /* for future expansion */
-};
-
-#define DIGI_GETBD ('d'<<8) | 249 /* get board info */
-
-struct digi_stat {
- unsigned int info_chan; /* Channel number (0 based) */
- unsigned int info_brd; /* Board number (0 based) */
- unsigned long info_cflag; /* cflag for channel */
- unsigned long info_iflag; /* iflag for channel */
- unsigned long info_oflag; /* oflag for channel */
- unsigned long info_mstat; /* mstat for channel */
- unsigned long info_tx_data; /* tx_data for channel */
- unsigned long info_rx_data; /* rx_data for channel */
- unsigned long info_hflow; /* hflow for channel */
- unsigned long info_reserved[8]; /* for future expansion */
-};
-
-#define DIGI_GETSTAT ('d'<<8) | 244 /* get board info */
-/************************************************************************
- *
- * Structure used with ioctl commands for per-channel information
- *
- ************************************************************************/
-struct digi_ch {
- unsigned long info_bdnum; /* Board number (0 based) */
- unsigned long info_channel; /* Channel index number */
- unsigned long info_ch_cflag; /* Channel cflag */
- unsigned long info_ch_iflag; /* Channel iflag */
- unsigned long info_ch_oflag; /* Channel oflag */
- unsigned long info_chsize; /* Channel structure size */
- unsigned long info_sleep_stat; /* sleep status */
- dev_t info_dev; /* device number */
- unsigned char info_initstate; /* Channel init state */
- unsigned char info_running; /* Channel running state */
- long reserved[8]; /* reserved for future use */
-};
-
-/*
-* This structure is used with the DIGI_FEPCMD ioctl to
-* tell the driver which port to send the command for.
-*/
-struct digi_cmd {
- int cmd;
- int word;
- int ncmds;
- int chan; /* channel index (zero based) */
- int bdid; /* board index (zero based) */
-};
-
-/*
-* info_sleep_stat defines
-*/
-#define INFO_RUNWAIT 0x0001
-#define INFO_WOPEN 0x0002
-#define INFO_TTIOW 0x0004
-#define INFO_CH_RWAIT 0x0008
-#define INFO_CH_WEMPTY 0x0010
-#define INFO_CH_WLOW 0x0020
-#define INFO_XXBUF_BUSY 0x0040
-
-#define DIGI_GETCH ('d'<<8) | 245 /* get board info */
-
-/* Board type definitions */
-
-#define SUBTYPE 0007
-#define T_PCXI 0000
-#define T_PCXM 0001
-#define T_PCXE 0002
-#define T_PCXR 0003
-#define T_SP 0004
-#define T_SP_PLUS 0005
-# define T_HERC 0000
-# define T_HOU 0001
-# define T_LON 0002
-# define T_CHA 0003
-#define FAMILY 0070
-#define T_COMXI 0000
-#define T_PCXX 0010
-#define T_CX 0020
-#define T_EPC 0030
-#define T_PCLITE 0040
-#define T_SPXX 0050
-#define T_AVXX 0060
-#define T_DXB 0070
-#define T_A2K_4_8 0070
-#define BUSTYPE 0700
-#define T_ISABUS 0000
-#define T_MCBUS 0100
-#define T_EISABUS 0200
-#define T_PCIBUS 0400
-
-/* Board State Definitions */
-
-#define BD_RUNNING 0x0
-#define BD_REASON 0x7f
-#define BD_NOTFOUND 0x1
-#define BD_NOIOPORT 0x2
-#define BD_NOMEM 0x3
-#define BD_NOBIOS 0x4
-#define BD_NOFEP 0x5
-#define BD_FAILED 0x6
-#define BD_ALLOCATED 0x7
-#define BD_TRIBOOT 0x8
-#define BD_BADKME 0x80
-
-#define DIGI_LOOPBACK ('d'<<8) | 252 /* Enable/disable UART internal loopback */
-#define DIGI_SPOLL ('d'<<8) | 254 /* change poller rate */
-
-#define DIGI_SETCUSTOMBAUD _IOW('e', 106, int) /* Set integer baud rate */
-#define DIGI_GETCUSTOMBAUD _IOR('e', 107, int) /* Get integer baud rate */
-#define DIGI_RESET_PORT ('e'<<8) | 93 /* Reset port */
-
-/************************************************************************
- * Channel information structure.
- ************************************************************************/
-struct channel_t {
- int magic; /* Channel Magic Number */
- struct bs_t *ch_bs; /* Base structure pointer */
- struct cm_t *ch_cm; /* Command queue pointer */
- struct board_t *ch_bd; /* Board structure pointer */
- unsigned char *ch_vaddr; /* FEP memory origin */
- unsigned char *ch_taddr; /* Write buffer origin */
- unsigned char *ch_raddr; /* Read buffer origin */
- struct digi_t ch_digi; /* Transparent Print structure */
- struct un_t ch_tun; /* Terminal unit info */
- struct un_t ch_pun; /* Printer unit info */
-
- spinlock_t ch_lock; /* provide for serialization */
- wait_queue_head_t ch_flags_wait;
-
- u32 pscan_state;
- uchar pscan_savechar;
-
- u32 ch_portnum; /* Port number, 0 offset. */
- u32 ch_open_count; /* open count */
- u32 ch_flags; /* Channel flags */
-
-
- u32 ch_close_delay; /* How long we should drop RTS/DTR for */
-
- u32 ch_cpstime; /* Time for CPS calculations */
-
- tcflag_t ch_c_iflag; /* channel iflags */
- tcflag_t ch_c_cflag; /* channel cflags */
- tcflag_t ch_c_oflag; /* channel oflags */
- tcflag_t ch_c_lflag; /* channel lflags */
-
- u16 ch_fepiflag; /* FEP tty iflags */
- u16 ch_fepcflag; /* FEP tty cflags */
- u16 ch_fepoflag; /* FEP tty oflags */
- u16 ch_wopen; /* Waiting for open process cnt */
- u16 ch_tstart; /* Transmit buffer start */
- u16 ch_tsize; /* Transmit buffer size */
- u16 ch_rstart; /* Receive buffer start */
- u16 ch_rsize; /* Receive buffer size */
- u16 ch_rdelay; /* Receive delay time */
-
- u16 ch_tlw; /* Our currently set low water mark */
-
- u16 ch_cook; /* Output character mask */
-
- uchar ch_card; /* Card channel is on */
- uchar ch_stopc; /* Stop character */
- uchar ch_startc; /* Start character */
-
- uchar ch_mostat; /* FEP output modem status */
- uchar ch_mistat; /* FEP input modem status */
- uchar ch_mforce; /* Modem values to be forced */
- uchar ch_mval; /* Force values */
- uchar ch_fepstopc; /* FEP stop character */
- uchar ch_fepstartc; /* FEP start character */
-
- uchar ch_astopc; /* Auxiliary Stop character */
- uchar ch_astartc; /* Auxiliary Start character */
- uchar ch_fepastopc; /* Auxiliary FEP stop char */
- uchar ch_fepastartc; /* Auxiliary FEP start char */
-
- uchar ch_hflow; /* FEP hardware handshake */
- uchar ch_dsr; /* stores real dsr value */
- uchar ch_cd; /* stores real cd value */
- uchar ch_tx_win; /* channel tx buffer window */
- uchar ch_rx_win; /* channel rx buffer window */
- uint ch_custom_speed; /* Custom baud, if set */
- uint ch_baud_info; /* Current baud info for /proc output */
- ulong ch_rxcount; /* total of data received so far */
- ulong ch_txcount; /* total of data transmitted so far */
- ulong ch_err_parity; /* Count of parity errors on channel */
- ulong ch_err_frame; /* Count of framing errors on channel */
- ulong ch_err_break; /* Count of breaks on channel */
- ulong ch_err_overrun; /* Count of overruns on channel */
-
- uint ch_sniff_in;
- uint ch_sniff_out;
- char *ch_sniff_buf; /* Sniff buffer for proc */
- ulong ch_sniff_flags; /* Channel flags */
- wait_queue_head_t ch_sniff_wait;
-};
-
-/************************************************************************
- * Command structure definition.
- ************************************************************************/
-struct cm_t {
- volatile unsigned short cm_head; /* Command buffer head offset */
- volatile unsigned short cm_tail; /* Command buffer tail offset */
- volatile unsigned short cm_start; /* start offset of buffer */
- volatile unsigned short cm_max; /* last offset of buffer */
-};
-
-/************************************************************************
- * Event structure definition.
- ************************************************************************/
-struct ev_t {
- volatile unsigned short ev_head; /* Command buffer head offset */
- volatile unsigned short ev_tail; /* Command buffer tail offset */
- volatile unsigned short ev_start; /* start offset of buffer */
- volatile unsigned short ev_max; /* last offset of buffer */
-};
-
-/************************************************************************
- * Download buffer structure.
- ************************************************************************/
-struct downld_t {
- uchar dl_type; /* Header */
- uchar dl_seq; /* Download sequence */
- ushort dl_srev; /* Software revision number */
- ushort dl_lrev; /* Low revision number */
- ushort dl_hrev; /* High revision number */
- ushort dl_seg; /* Start segment address */
- ushort dl_size; /* Number of bytes to download */
- uchar dl_data[1024]; /* Download data */
-};
-
-/************************************************************************
- * Per channel buffer structure
- ************************************************************************
- * Base Structure Entries Usage Meanings to Host *
- * *
- * W = read write R = read only *
- * C = changed by commands only *
- * U = unknown (may be changed w/o notice) *
- ************************************************************************/
-struct bs_t {
- volatile unsigned short tp_jmp; /* Transmit poll jump */
- volatile unsigned short tc_jmp; /* Cooked procedure jump */
- volatile unsigned short ri_jmp; /* Not currently used */
- volatile unsigned short rp_jmp; /* Receive poll jump */
-
- volatile unsigned short tx_seg; /* W Tx segment */
- volatile unsigned short tx_head; /* W Tx buffer head offset */
- volatile unsigned short tx_tail; /* R Tx buffer tail offset */
- volatile unsigned short tx_max; /* W Tx buffer size - 1 */
-
- volatile unsigned short rx_seg; /* W Rx segment */
- volatile unsigned short rx_head; /* W Rx buffer head offset */
- volatile unsigned short rx_tail; /* R Rx buffer tail offset */
- volatile unsigned short rx_max; /* W Rx buffer size - 1 */
-
- volatile unsigned short tx_lw; /* W Tx buffer low water mark */
- volatile unsigned short rx_lw; /* W Rx buffer low water mark */
- volatile unsigned short rx_hw; /* W Rx buffer high water mark */
- volatile unsigned short incr; /* W Increment to next channel */
-
- volatile unsigned short fepdev; /* U SCC device base address */
- volatile unsigned short edelay; /* W Exception delay */
- volatile unsigned short blen; /* W Break length */
- volatile unsigned short btime; /* U Break complete time */
-
- volatile unsigned short iflag; /* C UNIX input flags */
- volatile unsigned short oflag; /* C UNIX output flags */
- volatile unsigned short cflag; /* C UNIX control flags */
- volatile unsigned short wfill[13]; /* U Reserved for expansion */
-
- volatile unsigned char num; /* U Channel number */
- volatile unsigned char ract; /* U Receiver active counter */
- volatile unsigned char bstat; /* U Break status bits */
- volatile unsigned char tbusy; /* W Transmit busy */
- volatile unsigned char iempty; /* W Transmit empty event enable */
- volatile unsigned char ilow; /* W Transmit low-water event enable */
- volatile unsigned char idata; /* W Receive data interrupt enable */
- volatile unsigned char eflag; /* U Host event flags */
-
- volatile unsigned char tflag; /* U Transmit flags */
- volatile unsigned char rflag; /* U Receive flags */
- volatile unsigned char xmask; /* U Transmit ready flags */
- volatile unsigned char xval; /* U Transmit ready value */
- volatile unsigned char m_stat; /* RC Modem status bits */
- volatile unsigned char m_change; /* U Modem bits which changed */
- volatile unsigned char m_int; /* W Modem interrupt enable bits */
- volatile unsigned char m_last; /* U Last modem status */
-
- volatile unsigned char mtran; /* C Unreported modem trans */
- volatile unsigned char orun; /* C Buffer overrun occurred */
- volatile unsigned char astartc; /* W Auxiliary Xon char */
- volatile unsigned char astopc; /* W Auxiliary Xoff char */
- volatile unsigned char startc; /* W Xon character */
- volatile unsigned char stopc; /* W Xoff character */
- volatile unsigned char vnextc; /* W Vnext character */
- volatile unsigned char hflow; /* C Software flow control */
-
- volatile unsigned char fillc; /* U Delay Fill character */
- volatile unsigned char ochar; /* U Saved output character */
- volatile unsigned char omask; /* U Output character mask */
-
- volatile unsigned char bfill[13]; /* U Reserved for expansion */
-
- volatile unsigned char scc[16]; /* U SCC registers */
-};
-
-struct cnode {
- struct cnode *next;
- int type;
- int numbrd;
-
- union {
- struct {
- char type; /* Board Type */
- short port; /* I/O Address */
- char *portstr; /* I/O Address in string */
- long addr; /* Memory Address */
- char *addrstr; /* Memory Address in string */
- long pcibus; /* PCI BUS */
- char *pcibusstr; /* PCI BUS in string */
- long pcislot; /* PCI SLOT */
- char *pcislotstr; /* PCI SLOT in string */
- char nport; /* Number of Ports */
- char *id; /* tty id */
- int start; /* start of tty counting */
- char *method; /* Install method */
- char v_type;
- char v_port;
- char v_addr;
- char v_pcibus;
- char v_pcislot;
- char v_nport;
- char v_id;
- char v_start;
- char v_method;
- char line1;
- char line2;
- char conc1; /* total concs in line1 */
- char conc2; /* total concs in line2 */
- char module1; /* total modules for line1 */
- char module2; /* total modules for line2 */
- char *status; /* config status */
- char *dimstatus; /* Y/N */
- int status_index; /* field pointer */
- } board;
-
- struct {
- char *cable;
- char v_cable;
- char speed;
- char v_speed;
- } line;
-
- struct {
- char type;
- char *connect;
- char speed;
- char nport;
- char *id;
- char *idstr;
- int start;
- char v_type;
- char v_connect;
- char v_speed;
- char v_nport;
- char v_id;
- char v_start;
- } conc;
-
- struct {
- char type;
- char nport;
- char *id;
- char *idstr;
- int start;
- char v_type;
- char v_nport;
- char v_id;
- char v_start;
- } module;
-
- char *ttyname;
-
- char *cuname;
-
- char *printname;
-
- int majornumber;
-
- int altpin;
-
- int ttysize;
-
- int chsize;
-
- int bssize;
-
- int unsize;
-
- int f2size;
-
- int vpixsize;
-
- int useintr;
- } u;
-};
-
-#endif
projects / openwrt / staging / blogic.git / commitdiff