--- /dev/null
+/*
+ * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
+ *
+ * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
+ *
+ * (C) 2005 Harald Welte <laforge@gnumonks.org>
+ * - add support for poll()
+ * - driver cleanup
+ * - add waitqueues
+ * - adhere to linux kernel coding style and policies
+ * - support 2.6.13 "new style" pcmcia interface
+ *
+ * The device basically is a USB CCID compliant device that has been
+ * attached to an I/O-Mapped FIFO.
+ *
+ * All rights reserved, Dual BSD/GPL Licensed.
+ */
+
+/* #define PCMCIA_DEBUG 6 */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <linux/poll.h>
+#include <linux/wait.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+
+#include "cm4040_cs.h"
+
+
+#ifdef PCMCIA_DEBUG
+#define reader_to_dev(x) (&handle_to_dev(x->link.handle))
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0600);
+#define DEBUGP(n, rdr, x, args...) do { \
+ if (pc_debug >= (n)) \
+ dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \
+ __FUNCTION__ , ##args); \
+ } while (0)
+#else
+#define DEBUGP(n, rdr, x, args...)
+#endif
+
+static char *version =
+"OMNIKEY CardMan 4040 v1.1.0gm4 - All bugs added by Harald Welte";
+
+#define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
+#define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
+#define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
+#define READ_WRITE_BUFFER_SIZE 512
+#define POLL_LOOP_COUNT 1000
+
+/* how often to poll for fifo status change */
+#define POLL_PERIOD msecs_to_jiffies(10)
+
+static void reader_release(dev_link_t *link);
+static void reader_detach(dev_link_t *link);
+
+static int major;
+
+#define BS_READABLE 0x01
+#define BS_WRITABLE 0x02
+
+struct reader_dev {
+ dev_link_t link;
+ dev_node_t node;
+ wait_queue_head_t devq;
+ wait_queue_head_t poll_wait;
+ wait_queue_head_t read_wait;
+ wait_queue_head_t write_wait;
+ unsigned long buffer_status;
+ unsigned long timeout;
+ unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
+ unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
+ struct timer_list poll_timer;
+};
+
+static dev_info_t dev_info = MODULE_NAME;
+static dev_link_t *dev_table[CM_MAX_DEV];
+
+#ifndef PCMCIA_DEBUG
+#define xoutb outb
+#define xinb inb
+#else
+static inline void xoutb(unsigned char val, unsigned short port)
+{
+ if (pc_debug >= 7)
+ printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
+ outb(val, port);
+}
+
+static inline unsigned char xinb(unsigned short port)
+{
+ unsigned char val;
+
+ val = inb(port);
+ if (pc_debug >= 7)
+ printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
+ return val;
+}
+#endif
+
+/* poll the device fifo status register. not to be confused with
+ * the poll syscall. */
+static void cm4040_do_poll(unsigned long dummy)
+{
+ struct reader_dev *dev = (struct reader_dev *) dummy;
+ unsigned int obs = xinb(dev->link.io.BasePort1
+ + REG_OFFSET_BUFFER_STATUS);
+
+ if ((obs & BSR_BULK_IN_FULL)) {
+ set_bit(BS_READABLE, &dev->buffer_status);
+ DEBUGP(4, dev, "waking up read_wait\n");
+ wake_up_interruptible(&dev->read_wait);
+ } else
+ clear_bit(BS_READABLE, &dev->buffer_status);
+
+ if (!(obs & BSR_BULK_OUT_FULL)) {
+ set_bit(BS_WRITABLE, &dev->buffer_status);
+ DEBUGP(4, dev, "waking up write_wait\n");
+ wake_up_interruptible(&dev->write_wait);
+ } else
+ clear_bit(BS_WRITABLE, &dev->buffer_status);
+
+ if (dev->buffer_status)
+ wake_up_interruptible(&dev->poll_wait);
+
+ mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
+}
+
+static void cm4040_stop_poll(struct reader_dev *dev)
+{
+ del_timer_sync(&dev->poll_timer);
+}
+
+static int wait_for_bulk_out_ready(struct reader_dev *dev)
+{
+ int i, rc;
+ int iobase = dev->link.io.BasePort1;
+
+ for (i = 0; i < POLL_LOOP_COUNT; i++) {
+ if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
+ & BSR_BULK_OUT_FULL) == 0) {
+ DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
+ return 1;
+ }
+ }
+
+ DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
+ dev->timeout);
+ rc = wait_event_interruptible_timeout(dev->write_wait,
+ test_and_clear_bit(BS_WRITABLE,
+ &dev->buffer_status),
+ dev->timeout);
+
+ if (rc > 0)
+ DEBUGP(4, dev, "woke up: BulkOut empty\n");
+ else if (rc == 0)
+ DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
+ else if (rc < 0)
+ DEBUGP(4, dev, "woke up: signal arrived\n");
+
+ return rc;
+}
+
+/* Write to Sync Control Register */
+static int write_sync_reg(unsigned char val, struct reader_dev *dev)
+{
+ int iobase = dev->link.io.BasePort1;
+ int rc;
+
+ rc = wait_for_bulk_out_ready(dev);
+ if (rc <= 0)
+ return rc;
+
+ xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
+ rc = wait_for_bulk_out_ready(dev);
+ if (rc <= 0)
+ return rc;
+
+ return 1;
+}
+
+static int wait_for_bulk_in_ready(struct reader_dev *dev)
+{
+ int i, rc;
+ int iobase = dev->link.io.BasePort1;
+
+ for (i = 0; i < POLL_LOOP_COUNT; i++) {
+ if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
+ & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
+ DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
+ return 1;
+ }
+ }
+
+ DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
+ dev->timeout);
+ rc = wait_event_interruptible_timeout(dev->read_wait,
+ test_and_clear_bit(BS_READABLE,
+ &dev->buffer_status),
+ dev->timeout);
+ if (rc > 0)
+ DEBUGP(4, dev, "woke up: BulkIn full\n");
+ else if (rc == 0)
+ DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
+ else if (rc < 0)
+ DEBUGP(4, dev, "woke up: signal arrived\n");
+
+ return rc;
+}
+
+static ssize_t cm4040_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct reader_dev *dev = filp->private_data;
+ int iobase = dev->link.io.BasePort1;
+ size_t bytes_to_read;
+ unsigned long i;
+ size_t min_bytes_to_read;
+ int rc;
+ unsigned char uc;
+
+ DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
+
+ if (count == 0)
+ return 0;
+
+ if (count < 10)
+ return -EFAULT;
+
+ if (filp->f_flags & O_NONBLOCK) {
+ DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
+ DEBUGP(2, dev, "<- cm4040_read (failure)\n");
+ return -EAGAIN;
+ }
+
+ if ((dev->link.state & DEV_PRESENT)==0)
+ return -ENODEV;
+
+ for (i = 0; i < 5; i++) {
+ rc = wait_for_bulk_in_ready(dev);
+ if (rc <= 0) {
+ DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
+ DEBUGP(2, dev, "<- cm4040_read (failed)\n");
+ if (rc == -ERESTARTSYS)
+ return rc;
+ return -EIO;
+ }
+ dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
+#ifdef PCMCIA_DEBUG
+ if (pc_debug >= 6)
+ printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
+ }
+ printk("\n");
+#else
+ }
+#endif
+
+ bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
+
+ DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
+
+ min_bytes_to_read = min(count, bytes_to_read + 5);
+
+ DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
+
+ for (i = 0; i < (min_bytes_to_read-5); i++) {
+ rc = wait_for_bulk_in_ready(dev);
+ if (rc <= 0) {
+ DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
+ DEBUGP(2, dev, "<- cm4040_read (failed)\n");
+ if (rc == -ERESTARTSYS)
+ return rc;
+ return -EIO;
+ }
+ dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
+#ifdef PCMCIA_DEBUG
+ if (pc_debug >= 6)
+ printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
+ }
+ printk("\n");
+#else
+ }
+#endif
+
+ *ppos = min_bytes_to_read;
+ if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
+ return -EFAULT;
+
+ rc = wait_for_bulk_in_ready(dev);
+ if (rc <= 0) {
+ DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
+ DEBUGP(2, dev, "<- cm4040_read (failed)\n");
+ if (rc == -ERESTARTSYS)
+ return rc;
+ return -EIO;
+ }
+
+ rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
+ if (rc <= 0) {
+ DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
+ DEBUGP(2, dev, "<- cm4040_read (failed)\n");
+ if (rc == -ERESTARTSYS)
+ return rc;
+ else
+ return -EIO;
+ }
+
+ uc = xinb(iobase + REG_OFFSET_BULK_IN);
+
+ DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
+ return min_bytes_to_read;
+}
+
+static ssize_t cm4040_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct reader_dev *dev = filp->private_data;
+ int iobase = dev->link.io.BasePort1;
+ ssize_t rc;
+ int i;
+ unsigned int bytes_to_write;
+
+ DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
+
+ if (count == 0) {
+ DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
+ return 0;
+ }
+
+ if (count < 5) {
+ DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
+ return -EIO;
+ }
+
+ if (filp->f_flags & O_NONBLOCK) {
+ DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
+ DEBUGP(4, dev, "<- cm4040_write (failure)\n");
+ return -EAGAIN;
+ }
+
+ if ((dev->link.state & DEV_PRESENT) == 0)
+ return -ENODEV;
+
+ bytes_to_write = count;
+ if (copy_from_user(dev->s_buf, buf, bytes_to_write))
+ return -EFAULT;
+
+ switch (dev->s_buf[0]) {
+ case CMD_PC_TO_RDR_XFRBLOCK:
+ case CMD_PC_TO_RDR_SECURE:
+ case CMD_PC_TO_RDR_TEST_SECURE:
+ case CMD_PC_TO_RDR_OK_SECURE:
+ dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
+ break;
+
+ case CMD_PC_TO_RDR_ICCPOWERON:
+ dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
+ break;
+
+ case CMD_PC_TO_RDR_GETSLOTSTATUS:
+ case CMD_PC_TO_RDR_ICCPOWEROFF:
+ case CMD_PC_TO_RDR_GETPARAMETERS:
+ case CMD_PC_TO_RDR_RESETPARAMETERS:
+ case CMD_PC_TO_RDR_SETPARAMETERS:
+ case CMD_PC_TO_RDR_ESCAPE:
+ case CMD_PC_TO_RDR_ICCCLOCK:
+ default:
+ dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
+ break;
+ }
+
+ rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
+ if (rc <= 0) {
+ DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
+ DEBUGP(2, dev, "<- cm4040_write (failed)\n");
+ if (rc == -ERESTARTSYS)
+ return rc;
+ else
+ return -EIO;
+ }
+
+ DEBUGP(4, dev, "start \n");
+
+ for (i = 0; i < bytes_to_write; i++) {
+ rc = wait_for_bulk_out_ready(dev);
+ if (rc <= 0) {
+ DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
+ rc);
+ DEBUGP(2, dev, "<- cm4040_write (failed)\n");
+ if (rc == -ERESTARTSYS)
+ return rc;
+ else
+ return -EIO;
+ }
+
+ xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
+ }
+ DEBUGP(4, dev, "end\n");
+
+ rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
+
+ if (rc <= 0) {
+ DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
+ DEBUGP(2, dev, "<- cm4040_write (failed)\n");
+ if (rc == -ERESTARTSYS)
+ return rc;
+ else
+ return -EIO;
+ }
+
+ DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
+ return count;
+}
+
+static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
+{
+ struct reader_dev *dev = filp->private_data;
+ unsigned int mask = 0;
+
+ poll_wait(filp, &dev->poll_wait, wait);
+
+ if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
+ mask |= POLLIN | POLLRDNORM;
+ if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
+ mask |= POLLOUT | POLLWRNORM;
+
+ DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
+
+ return mask;
+}
+
+static int cm4040_open(struct inode *inode, struct file *filp)
+{
+ struct reader_dev *dev;
+ dev_link_t *link;
+ int minor = iminor(inode);
+
+ if (minor >= CM_MAX_DEV)
+ return -ENODEV;
+
+ link = dev_table[minor];
+ if (link == NULL || !(DEV_OK(link)))
+ return -ENODEV;
+
+ if (link->open)
+ return -EBUSY;
+
+ dev = link->priv;
+ filp->private_data = dev;
+
+ if (filp->f_flags & O_NONBLOCK) {
+ DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
+ return -EAGAIN;
+ }
+
+ link->open = 1;
+
+ dev->poll_timer.data = (unsigned long) dev;
+ mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
+
+ DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
+ return nonseekable_open(inode, filp);
+}
+
+static int cm4040_close(struct inode *inode, struct file *filp)
+{
+ struct reader_dev *dev = filp->private_data;
+ dev_link_t *link;
+ int minor = iminor(inode);
+
+ DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
+ iminor(inode));
+
+ if (minor >= CM_MAX_DEV)
+ return -ENODEV;
+
+ link = dev_table[minor];
+ if (link == NULL)
+ return -ENODEV;
+
+ cm4040_stop_poll(dev);
+
+ link->open = 0;
+ wake_up(&dev->devq);
+
+ DEBUGP(2, dev, "<- cm4040_close\n");
+ return 0;
+}
+
+static void cm4040_reader_release(dev_link_t *link)
+{
+ struct reader_dev *dev = link->priv;
+
+ DEBUGP(3, dev, "-> cm4040_reader_release\n");
+ while (link->open) {
+ DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release "
+ "until process has terminated\n");
+ wait_event(dev->devq, (link->open == 0));
+ }
+ DEBUGP(3, dev, "<- cm4040_reader_release\n");
+ return;
+}
+
+static void reader_config(dev_link_t *link, int devno)
+{
+ client_handle_t handle;
+ struct reader_dev *dev;
+ tuple_t tuple;
+ cisparse_t parse;
+ config_info_t conf;
+ u_char buf[64];
+ int fail_fn, fail_rc;
+ int rc;
+
+ handle = link->handle;
+
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ tuple.Attributes = 0;
+ tuple.TupleData = buf;
+ tuple.TupleDataMax = sizeof(buf);
+ tuple.TupleOffset = 0;
+
+ if ((fail_rc = pcmcia_get_first_tuple(handle, &tuple)) != CS_SUCCESS) {
+ fail_fn = GetFirstTuple;
+ goto cs_failed;
+ }
+ if ((fail_rc = pcmcia_get_tuple_data(handle, &tuple)) != CS_SUCCESS) {
+ fail_fn = GetTupleData;
+ goto cs_failed;
+ }
+ if ((fail_rc = pcmcia_parse_tuple(handle, &tuple, &parse))
+ != CS_SUCCESS) {
+ fail_fn = ParseTuple;
+ goto cs_failed;
+ }
+ if ((fail_rc = pcmcia_get_configuration_info(handle, &conf))
+ != CS_SUCCESS) {
+ fail_fn = GetConfigurationInfo;
+ goto cs_failed;
+ }
+
+ link->state |= DEV_CONFIG;
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+ link->conf.Vcc = conf.Vcc;
+
+ link->io.BasePort2 = 0;
+ link->io.NumPorts2 = 0;
+ link->io.Attributes2 = 0;
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ for (rc = pcmcia_get_first_tuple(handle, &tuple);
+ rc == CS_SUCCESS;
+ rc = pcmcia_get_next_tuple(handle, &tuple)) {
+ rc = pcmcia_get_tuple_data(handle, &tuple);
+ if (rc != CS_SUCCESS)
+ continue;
+ rc = pcmcia_parse_tuple(handle, &tuple, &parse);
+ if (rc != CS_SUCCESS)
+ continue;
+
+ link->conf.ConfigIndex = parse.cftable_entry.index;
+
+ if (!parse.cftable_entry.io.nwin)
+ continue;
+
+ link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
+ link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+ if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+ if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ link->io.IOAddrLines = parse.cftable_entry.io.flags
+ & CISTPL_IO_LINES_MASK;
+ rc = pcmcia_request_io(handle, &link->io);
+
+ dev_printk(KERN_INFO, &handle_to_dev(handle), "foo");
+ if (rc == CS_SUCCESS)
+ break;
+ else
+ dev_printk(KERN_INFO, &handle_to_dev(handle),
+ "pcmcia_request_io failed 0x%x\n", rc);
+ }
+ if (rc != CS_SUCCESS)
+ goto cs_release;
+
+ link->conf.IntType = 00000002;
+
+ if ((fail_rc = pcmcia_request_configuration(handle,&link->conf))
+ !=CS_SUCCESS) {
+ fail_fn = RequestConfiguration;
+ dev_printk(KERN_INFO, &handle_to_dev(handle),
+ "pcmcia_request_configuration failed 0x%x\n",
+ fail_rc);
+ goto cs_release;
+ }
+
+ dev = link->priv;
+ sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
+ dev->node.major = major;
+ dev->node.minor = devno;
+ dev->node.next = NULL;
+ link->dev = &dev->node;
+ link->state &= ~DEV_CONFIG_PENDING;
+
+ DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
+ link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
+ DEBUGP(2, dev, "<- reader_config (succ)\n");
+
+ return;
+
+cs_failed:
+ cs_error(handle, fail_fn, fail_rc);
+cs_release:
+ reader_release(link);
+ link->state &= ~DEV_CONFIG_PENDING;
+}
+
+static int reader_event(event_t event, int priority,
+ event_callback_args_t *args)
+{
+ dev_link_t *link;
+ struct reader_dev *dev;
+ int devno;
+
+ link = args->client_data;
+ dev = link->priv;
+ DEBUGP(3, dev, "-> reader_event\n");
+ for (devno = 0; devno < CM_MAX_DEV; devno++) {
+ if (dev_table[devno] == link)
+ break;
+ }
+ if (devno == CM_MAX_DEV)
+ return CS_BAD_ADAPTER;
+
+ switch (event) {
+ case CS_EVENT_CARD_INSERTION:
+ DEBUGP(5, dev, "CS_EVENT_CARD_INSERTION\n");
+ link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+ reader_config(link, devno);
+ break;
+ case CS_EVENT_CARD_REMOVAL:
+ DEBUGP(5, dev, "CS_EVENT_CARD_REMOVAL\n");
+ link->state &= ~DEV_PRESENT;
+ break;
+ case CS_EVENT_PM_SUSPEND:
+ DEBUGP(5, dev, "CS_EVENT_PM_SUSPEND "
+ "(fall-through to CS_EVENT_RESET_PHYSICAL)\n");
+ link->state |= DEV_SUSPEND;
+
+ case CS_EVENT_RESET_PHYSICAL:
+ DEBUGP(5, dev, "CS_EVENT_RESET_PHYSICAL\n");
+ if (link->state & DEV_CONFIG) {
+ DEBUGP(5, dev, "ReleaseConfiguration\n");
+ pcmcia_release_configuration(link->handle);
+ }
+ break;
+ case CS_EVENT_PM_RESUME:
+ DEBUGP(5, dev, "CS_EVENT_PM_RESUME "
+ "(fall-through to CS_EVENT_CARD_RESET)\n");
+ link->state &= ~DEV_SUSPEND;
+
+ case CS_EVENT_CARD_RESET:
+ DEBUGP(5, dev, "CS_EVENT_CARD_RESET\n");
+ if ((link->state & DEV_CONFIG)) {
+ DEBUGP(5, dev, "RequestConfiguration\n");
+ pcmcia_request_configuration(link->handle,
+ &link->conf);
+ }
+ break;
+ default:
+ DEBUGP(5, dev, "reader_event: unknown event %.2x\n",
+ event);
+ break;
+ }
+ DEBUGP(3, dev, "<- reader_event\n");
+ return CS_SUCCESS;
+}
+
+static void reader_release(dev_link_t *link)
+{
+ cm4040_reader_release(link->priv);
+ pcmcia_release_configuration(link->handle);
+ pcmcia_release_io(link->handle, &link->io);
+}
+
+static dev_link_t *reader_attach(void)
+{
+ struct reader_dev *dev;
+ dev_link_t *link;
+ client_reg_t client_reg;
+ int i;
+
+ for (i = 0; i < CM_MAX_DEV; i++) {
+ if (dev_table[i] == NULL)
+ break;
+ }
+
+ if (i == CM_MAX_DEV)
+ return NULL;
+
+ dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
+ if (dev == NULL)
+ return NULL;
+
+ dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
+ dev->buffer_status = 0;
+
+ link = &dev->link;
+ link->priv = dev;
+
+ link->conf.IntType = INT_MEMORY_AND_IO;
+ dev_table[i] = link;
+
+ client_reg.dev_info = &dev_info;
+ client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+ client_reg.EventMask=
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.Version = 0x0210;
+ client_reg.event_callback_args.client_data = link;
+ i = pcmcia_register_client(&link->handle, &client_reg);
+ if (i) {
+ cs_error(link->handle, RegisterClient, i);
+ reader_detach(link);
+ return NULL;
+ }
+ init_waitqueue_head(&dev->devq);
+ init_waitqueue_head(&dev->poll_wait);
+ init_waitqueue_head(&dev->read_wait);
+ init_waitqueue_head(&dev->write_wait);
+ init_timer(&dev->poll_timer);
+ dev->poll_timer.function = &cm4040_do_poll;
+
+ return link;
+}
+
+static void reader_detach_by_devno(int devno, dev_link_t *link)
+{
+ struct reader_dev *dev = link->priv;
+
+ if (link->state & DEV_CONFIG) {
+ DEBUGP(5, dev, "device still configured (try to release it)\n");
+ reader_release(link);
+ }
+
+ pcmcia_deregister_client(link->handle);
+ dev_table[devno] = NULL;
+ DEBUGP(5, dev, "freeing dev=%p\n", dev);
+ cm4040_stop_poll(dev);
+ kfree(dev);
+ return;
+}
+
+static void reader_detach(dev_link_t *link)
+{
+ int i;
+
+ /* find device */
+ for (i = 0; i < CM_MAX_DEV; i++) {
+ if (dev_table[i] == link)
+ break;
+ }
+ if (i == CM_MAX_DEV)
+ return;
+
+ reader_detach_by_devno(i, link);
+ return;
+}
+
+static struct file_operations reader_fops = {
+ .owner = THIS_MODULE,
+ .read = cm4040_read,
+ .write = cm4040_write,
+ .open = cm4040_open,
+ .release = cm4040_close,
+ .poll = cm4040_poll,
+};
+
+static struct pcmcia_device_id cm4040_ids[] = {
+ PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
+ PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
+ 0xE32CDD8C, 0x8F23318B),
+ PCMCIA_DEVICE_NULL,
+};
+MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
+
+static struct pcmcia_driver reader_driver = {
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = "cm4040_cs",
+ },
+ .attach = reader_attach,
+ .detach = reader_detach,
+ .event = reader_event,
+ .id_table = cm4040_ids,
+};
+
+static int __init cm4040_init(void)
+{
+ printk(KERN_INFO "%s\n", version);
+ pcmcia_register_driver(&reader_driver);
+ major = register_chrdev(0, DEVICE_NAME, &reader_fops);
+ if (major < 0) {
+ printk(KERN_WARNING MODULE_NAME
+ ": could not get major number\n");
+ return -1;
+ }
+ return 0;
+}
+
+static void __exit cm4040_exit(void)
+{
+ int i;
+
+ printk(KERN_INFO MODULE_NAME ": unloading\n");
+ pcmcia_unregister_driver(&reader_driver);
+ for (i = 0; i < CM_MAX_DEV; i++) {
+ if (dev_table[i])
+ reader_detach_by_devno(i, dev_table[i]);
+ }
+ unregister_chrdev(major, DEVICE_NAME);
+}
+
+module_init(cm4040_init);
+module_exit(cm4040_exit);
+MODULE_LICENSE("Dual BSD/GPL");
projects / openwrt / staging / blogic.git / commitdiff