F: arch/arm/include/asm/hardware/iomd.h
F: arch/arm/include/asm/hardware/memc.h
F: arch/arm/mach-rpc/
-F: drivers/net/arm/ether3*
+F: drivers/net/ethernet/i825xx/ether1*
+F: drivers/net/ethernet/seeq/ether3*
F: drivers/scsi/arm/
ARM/SHARK MACHINE SUPPORT
To compile this driver as a module, choose M here. The module
will be called eth16i.
-config SEEQ8005
- tristate "SEEQ8005 support (EXPERIMENTAL)"
- depends on NET_ISA && EXPERIMENTAL
- help
- This is a driver for the SEEQ 8005 network (Ethernet) card. If this
- is for you, read the Ethernet-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>.
-
- To compile this driver as a module, choose M here. The module
- will be called seeq8005.
-
config NET_PCI
bool "EISA, VLB, PCI and on board controllers"
depends on ISA || EISA || PCI
the questions about this class of network devices. If you say Y, you
will be asked for your specific device in the following questions.
-config SGISEEQ
- tristate "SGI Seeq ethernet controller support"
- depends on SGI_HAS_SEEQ
- help
- Say Y here if you have an Seeq based Ethernet network card. This is
- used in many Silicon Graphics machines.
-
config FEC
bool "FEC ethernet controller (of ColdFire and some i.MX CPUs)"
depends on M523x || M527x || M5272 || M528x || M520x || M532x || \
obj-$(CONFIG_HAMACHI) += hamachi.o
obj-$(CONFIG_NET) += Space.o loopback.o
-obj-$(CONFIG_SEEQ8005) += seeq8005.o
obj-$(CONFIG_NET_SB1000) += sb1000.o
obj-$(CONFIG_HP100) += hp100.o
obj-$(CONFIG_FEC) += fec.o
obj-$(CONFIG_MACVLAN) += macvlan.o
obj-$(CONFIG_MACVTAP) += macvtap.o
obj-$(CONFIG_DEFXX) += defxx.o
-obj-$(CONFIG_SGISEEQ) += sgiseeq.o
obj-$(CONFIG_AT1700) += at1700.o
obj-$(CONFIG_CPMAC) += cpmac.o
# These are for Acorn's Expansion card network interfaces
#
-config ARM_ETHER3
- tristate "Acorn/ANT Ether3 support"
- depends on ARM && ARCH_ACORN
- help
- If you have an Acorn system with one of these network cards, you
- should say Y to this option if you wish to use it with Linux.
-
config ARM_AT91_ETHER
tristate "AT91RM9200 Ethernet support"
depends on ARM && ARCH_AT91RM9200
# Makefile for the ARM network device drivers
#
-obj-$(CONFIG_ARM_ETHER3) += ether3.o
obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
obj-$(CONFIG_ARM_KS8695_ETHER) += ks8695net.o
obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o
+++ /dev/null
-/*
- * linux/drivers/acorn/net/ether3.c
- *
- * Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card
- * for Acorn machines
- *
- * By Russell King, with some suggestions from borris@ant.co.uk
- *
- * Changelog:
- * 1.04 RMK 29/02/1996 Won't pass packets that are from our ethernet
- * address up to the higher levels - they're
- * silently ignored. I/F can now be put into
- * multicast mode. Receiver routine optimised.
- * 1.05 RMK 30/02/1996 Now claims interrupt at open when part of
- * the kernel rather than when a module.
- * 1.06 RMK 02/03/1996 Various code cleanups
- * 1.07 RMK 13/10/1996 Optimised interrupt routine and transmit
- * routines.
- * 1.08 RMK 14/10/1996 Fixed problem with too many packets,
- * prevented the kernel message about dropped
- * packets appearing too many times a second.
- * Now does not disable all IRQs, only the IRQ
- * used by this card.
- * 1.09 RMK 10/11/1996 Only enables TX irq when buffer space is low,
- * but we still service the TX queue if we get a
- * RX interrupt.
- * 1.10 RMK 15/07/1997 Fixed autoprobing of NQ8004.
- * 1.11 RMK 16/11/1997 Fixed autoprobing of NQ8005A.
- * 1.12 RMK 31/12/1997 Removed reference to dev_tint for Linux 2.1.
- * RMK 27/06/1998 Changed asm/delay.h to linux/delay.h.
- * 1.13 RMK 29/06/1998 Fixed problem with transmission of packets.
- * Chip seems to have a bug in, whereby if the
- * packet starts two bytes from the end of the
- * buffer, it corrupts the receiver chain, and
- * never updates the transmit status correctly.
- * 1.14 RMK 07/01/1998 Added initial code for ETHERB addressing.
- * 1.15 RMK 30/04/1999 More fixes to the transmit routine for buggy
- * hardware.
- * 1.16 RMK 10/02/2000 Updated for 2.3.43
- * 1.17 RMK 13/05/2000 Updated for 2.3.99-pre8
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/device.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-
-#include <asm/system.h>
-#include <asm/ecard.h>
-#include <asm/io.h>
-
-static char version[] __devinitdata = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n";
-
-#include "ether3.h"
-
-static unsigned int net_debug = NET_DEBUG;
-
-static void ether3_setmulticastlist(struct net_device *dev);
-static int ether3_rx(struct net_device *dev, unsigned int maxcnt);
-static void ether3_tx(struct net_device *dev);
-static int ether3_open (struct net_device *dev);
-static int ether3_sendpacket (struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t ether3_interrupt (int irq, void *dev_id);
-static int ether3_close (struct net_device *dev);
-static void ether3_setmulticastlist (struct net_device *dev);
-static void ether3_timeout(struct net_device *dev);
-
-#define BUS_16 2
-#define BUS_8 1
-#define BUS_UNKNOWN 0
-
-/* --------------------------------------------------------------------------- */
-
-typedef enum {
- buffer_write,
- buffer_read
-} buffer_rw_t;
-
-/*
- * ether3 read/write. Slow things down a bit...
- * The SEEQ8005 doesn't like us writing to its registers
- * too quickly.
- */
-static inline void ether3_outb(int v, const void __iomem *r)
-{
- writeb(v, r);
- udelay(1);
-}
-
-static inline void ether3_outw(int v, const void __iomem *r)
-{
- writew(v, r);
- udelay(1);
-}
-#define ether3_inb(r) ({ unsigned int __v = readb((r)); udelay(1); __v; })
-#define ether3_inw(r) ({ unsigned int __v = readw((r)); udelay(1); __v; })
-
-static int
-ether3_setbuffer(struct net_device *dev, buffer_rw_t read, int start)
-{
- int timeout = 1000;
-
- ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
- ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
-
- while ((ether3_inw(REG_STATUS) & STAT_FIFOEMPTY) == 0) {
- if (!timeout--) {
- printk("%s: setbuffer broken\n", dev->name);
- priv(dev)->broken = 1;
- return 1;
- }
- udelay(1);
- }
-
- if (read == buffer_read) {
- ether3_outw(start, REG_DMAADDR);
- ether3_outw(priv(dev)->regs.command | CMD_FIFOREAD, REG_COMMAND);
- } else {
- ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
- ether3_outw(start, REG_DMAADDR);
- }
- return 0;
-}
-
-/*
- * write data to the buffer memory
- */
-#define ether3_writebuffer(dev,data,length) \
- writesw(REG_BUFWIN, (data), (length) >> 1)
-
-#define ether3_writeword(dev,data) \
- writew((data), REG_BUFWIN)
-
-#define ether3_writelong(dev,data) { \
- void __iomem *reg_bufwin = REG_BUFWIN; \
- writew((data), reg_bufwin); \
- writew((data) >> 16, reg_bufwin); \
-}
-
-/*
- * read data from the buffer memory
- */
-#define ether3_readbuffer(dev,data,length) \
- readsw(REG_BUFWIN, (data), (length) >> 1)
-
-#define ether3_readword(dev) \
- readw(REG_BUFWIN)
-
-#define ether3_readlong(dev) \
- readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16)
-
-/*
- * Switch LED off...
- */
-static void ether3_ledoff(unsigned long data)
-{
- struct net_device *dev = (struct net_device *)data;
- ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2);
-}
-
-/*
- * switch LED on...
- */
-static inline void ether3_ledon(struct net_device *dev)
-{
- del_timer(&priv(dev)->timer);
- priv(dev)->timer.expires = jiffies + HZ / 50; /* leave on for 1/50th second */
- priv(dev)->timer.data = (unsigned long)dev;
- priv(dev)->timer.function = ether3_ledoff;
- add_timer(&priv(dev)->timer);
- if (priv(dev)->regs.config2 & CFG2_CTRLO)
- ether3_outw(priv(dev)->regs.config2 &= ~CFG2_CTRLO, REG_CONFIG2);
-}
-
-/*
- * Read the ethernet address string from the on board rom.
- * This is an ascii string!!!
- */
-static int __devinit
-ether3_addr(char *addr, struct expansion_card *ec)
-{
- struct in_chunk_dir cd;
- char *s;
-
- if (ecard_readchunk(&cd, ec, 0xf5, 0) && (s = strchr(cd.d.string, '('))) {
- int i;
- for (i = 0; i<6; i++) {
- addr[i] = simple_strtoul(s + 1, &s, 0x10);
- if (*s != (i==5?')' : ':' ))
- break;
- }
- if (i == 6)
- return 0;
- }
- /* I wonder if we should even let the user continue in this case
- * - no, it would be better to disable the device
- */
- printk(KERN_ERR "ether3: Couldn't read a valid MAC address from card.\n");
- return -ENODEV;
-}
-
-/* --------------------------------------------------------------------------- */
-
-static int __devinit
-ether3_ramtest(struct net_device *dev, unsigned char byte)
-{
- unsigned char *buffer = kmalloc(RX_END, GFP_KERNEL);
- int i,ret = 0;
- int max_errors = 4;
- int bad = -1;
-
- if (!buffer)
- return 1;
-
- memset(buffer, byte, RX_END);
- ether3_setbuffer(dev, buffer_write, 0);
- ether3_writebuffer(dev, buffer, TX_END);
- ether3_setbuffer(dev, buffer_write, RX_START);
- ether3_writebuffer(dev, buffer + RX_START, RX_LEN);
- memset(buffer, byte ^ 0xff, RX_END);
- ether3_setbuffer(dev, buffer_read, 0);
- ether3_readbuffer(dev, buffer, TX_END);
- ether3_setbuffer(dev, buffer_read, RX_START);
- ether3_readbuffer(dev, buffer + RX_START, RX_LEN);
-
- for (i = 0; i < RX_END; i++) {
- if (buffer[i] != byte) {
- if (max_errors > 0 && bad != buffer[i]) {
- printk("%s: RAM failed with (%02X instead of %02X) at 0x%04X",
- dev->name, buffer[i], byte, i);
- ret = 2;
- max_errors--;
- bad = i;
- }
- } else {
- if (bad != -1) {
- if (bad != i - 1)
- printk(" - 0x%04X\n", i - 1);
- printk("\n");
- bad = -1;
- }
- }
- }
- if (bad != -1)
- printk(" - 0xffff\n");
- kfree(buffer);
-
- return ret;
-}
-
-/* ------------------------------------------------------------------------------- */
-
-static int __devinit ether3_init_2(struct net_device *dev)
-{
- int i;
-
- priv(dev)->regs.config1 = CFG1_RECVCOMPSTAT0|CFG1_DMABURST8;
- priv(dev)->regs.config2 = CFG2_CTRLO|CFG2_RECVCRC|CFG2_ERRENCRC;
- priv(dev)->regs.command = 0;
-
- /*
- * Set up our hardware address
- */
- ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1);
- for (i = 0; i < 6; i++)
- ether3_outb(dev->dev_addr[i], REG_BUFWIN);
-
- if (dev->flags & IFF_PROMISC)
- priv(dev)->regs.config1 |= CFG1_RECVPROMISC;
- else if (dev->flags & IFF_MULTICAST)
- priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI;
- else
- priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD;
-
- /*
- * There is a problem with the NQ8005 in that it occasionally loses the
- * last two bytes. To get round this problem, we receive the CRC as
- * well. That way, if we do lose the last two, then it doesn't matter.
- */
- ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1);
- ether3_outw((TX_END>>8) - 1, REG_BUFWIN);
- ether3_outw(priv(dev)->rx_head, REG_RECVPTR);
- ether3_outw(0, REG_TRANSMITPTR);
- ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND);
- ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
- ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
- ether3_outw(priv(dev)->regs.command, REG_COMMAND);
-
- i = ether3_ramtest(dev, 0x5A);
- if(i)
- return i;
- i = ether3_ramtest(dev, 0x1E);
- if(i)
- return i;
-
- ether3_setbuffer(dev, buffer_write, 0);
- ether3_writelong(dev, 0);
- return 0;
-}
-
-static void
-ether3_init_for_open(struct net_device *dev)
-{
- int i;
-
- /* Reset the chip */
- ether3_outw(CFG2_RESET, REG_CONFIG2);
- udelay(4);
-
- priv(dev)->regs.command = 0;
- ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND);
- while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON))
- barrier();
-
- ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1);
- for (i = 0; i < 6; i++)
- ether3_outb(dev->dev_addr[i], REG_BUFWIN);
-
- priv(dev)->tx_head = 0;
- priv(dev)->tx_tail = 0;
- priv(dev)->regs.config2 |= CFG2_CTRLO;
- priv(dev)->rx_head = RX_START;
-
- ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1);
- ether3_outw((TX_END>>8) - 1, REG_BUFWIN);
- ether3_outw(priv(dev)->rx_head, REG_RECVPTR);
- ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND);
- ether3_outw(0, REG_TRANSMITPTR);
- ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
- ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
-
- ether3_setbuffer(dev, buffer_write, 0);
- ether3_writelong(dev, 0);
-
- priv(dev)->regs.command = CMD_ENINTRX | CMD_ENINTTX;
- ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND);
-}
-
-static inline int
-ether3_probe_bus_8(struct net_device *dev, int val)
-{
- int write_low, write_high, read_low, read_high;
-
- write_low = val & 255;
- write_high = val >> 8;
-
- printk(KERN_DEBUG "ether3_probe: write8 [%02X:%02X]", write_high, write_low);
-
- ether3_outb(write_low, REG_RECVPTR);
- ether3_outb(write_high, REG_RECVPTR + 4);
-
- read_low = ether3_inb(REG_RECVPTR);
- read_high = ether3_inb(REG_RECVPTR + 4);
-
- printk(", read8 [%02X:%02X]\n", read_high, read_low);
-
- return read_low == write_low && read_high == write_high;
-}
-
-static inline int
-ether3_probe_bus_16(struct net_device *dev, int val)
-{
- int read_val;
-
- ether3_outw(val, REG_RECVPTR);
- read_val = ether3_inw(REG_RECVPTR);
-
- printk(KERN_DEBUG "ether3_probe: write16 [%04X], read16 [%04X]\n", val, read_val);
-
- return read_val == val;
-}
-
-/*
- * Open/initialize the board. This is called (in the current kernel)
- * sometime after booting when the 'ifconfig' program is run.
- *
- * This routine should set everything up anew at each open, even
- * registers that "should" only need to be set once at boot, so that
- * there is non-reboot way to recover if something goes wrong.
- */
-static int
-ether3_open(struct net_device *dev)
-{
- if (!is_valid_ether_addr(dev->dev_addr)) {
- printk(KERN_WARNING "%s: invalid ethernet MAC address\n",
- dev->name);
- return -EINVAL;
- }
-
- if (request_irq(dev->irq, ether3_interrupt, 0, "ether3", dev))
- return -EAGAIN;
-
- ether3_init_for_open(dev);
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-/*
- * The inverse routine to ether3_open().
- */
-static int
-ether3_close(struct net_device *dev)
-{
- netif_stop_queue(dev);
-
- disable_irq(dev->irq);
-
- ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND);
- priv(dev)->regs.command = 0;
- while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON))
- barrier();
- ether3_outb(0x80, REG_CONFIG2 + 4);
- ether3_outw(0, REG_COMMAND);
-
- free_irq(dev->irq, dev);
-
- return 0;
-}
-
-/*
- * Set or clear promiscuous/multicast mode filter for this adaptor.
- *
- * We don't attempt any packet filtering. The card may have a SEEQ 8004
- * in which does not have the other ethernet address registers present...
- */
-static void ether3_setmulticastlist(struct net_device *dev)
-{
- priv(dev)->regs.config1 &= ~CFG1_RECVPROMISC;
-
- if (dev->flags & IFF_PROMISC) {
- /* promiscuous mode */
- priv(dev)->regs.config1 |= CFG1_RECVPROMISC;
- } else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
- priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI;
- } else
- priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD;
-
- ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
-}
-
-static void ether3_timeout(struct net_device *dev)
-{
- unsigned long flags;
-
- del_timer(&priv(dev)->timer);
-
- local_irq_save(flags);
- printk(KERN_ERR "%s: transmit timed out, network cable problem?\n", dev->name);
- printk(KERN_ERR "%s: state: { status=%04X cfg1=%04X cfg2=%04X }\n", dev->name,
- ether3_inw(REG_STATUS), ether3_inw(REG_CONFIG1), ether3_inw(REG_CONFIG2));
- printk(KERN_ERR "%s: { rpr=%04X rea=%04X tpr=%04X }\n", dev->name,
- ether3_inw(REG_RECVPTR), ether3_inw(REG_RECVEND), ether3_inw(REG_TRANSMITPTR));
- printk(KERN_ERR "%s: tx head=%X tx tail=%X\n", dev->name,
- priv(dev)->tx_head, priv(dev)->tx_tail);
- ether3_setbuffer(dev, buffer_read, priv(dev)->tx_tail);
- printk(KERN_ERR "%s: packet status = %08X\n", dev->name, ether3_readlong(dev));
- local_irq_restore(flags);
-
- priv(dev)->regs.config2 |= CFG2_CTRLO;
- dev->stats.tx_errors += 1;
- ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
- priv(dev)->tx_head = priv(dev)->tx_tail = 0;
-
- netif_wake_queue(dev);
-}
-
-/*
- * Transmit a packet
- */
-static int
-ether3_sendpacket(struct sk_buff *skb, struct net_device *dev)
-{
- unsigned long flags;
- unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
- unsigned int ptr, next_ptr;
-
- if (priv(dev)->broken) {
- dev_kfree_skb(skb);
- dev->stats.tx_dropped++;
- netif_start_queue(dev);
- return NETDEV_TX_OK;
- }
-
- length = (length + 1) & ~1;
- if (length != skb->len) {
- if (skb_padto(skb, length))
- goto out;
- }
-
- next_ptr = (priv(dev)->tx_head + 1) & 15;
-
- local_irq_save(flags);
-
- if (priv(dev)->tx_tail == next_ptr) {
- local_irq_restore(flags);
- return NETDEV_TX_BUSY; /* unable to queue */
- }
-
- ptr = 0x600 * priv(dev)->tx_head;
- priv(dev)->tx_head = next_ptr;
- next_ptr *= 0x600;
-
-#define TXHDR_FLAGS (TXHDR_TRANSMIT|TXHDR_CHAINCONTINUE|TXHDR_DATAFOLLOWS|TXHDR_ENSUCCESS)
-
- ether3_setbuffer(dev, buffer_write, next_ptr);
- ether3_writelong(dev, 0);
- ether3_setbuffer(dev, buffer_write, ptr);
- ether3_writelong(dev, 0);
- ether3_writebuffer(dev, skb->data, length);
- ether3_writeword(dev, htons(next_ptr));
- ether3_writeword(dev, TXHDR_CHAINCONTINUE >> 16);
- ether3_setbuffer(dev, buffer_write, ptr);
- ether3_writeword(dev, htons((ptr + length + 4)));
- ether3_writeword(dev, TXHDR_FLAGS >> 16);
- ether3_ledon(dev);
-
- if (!(ether3_inw(REG_STATUS) & STAT_TXON)) {
- ether3_outw(ptr, REG_TRANSMITPTR);
- ether3_outw(priv(dev)->regs.command | CMD_TXON, REG_COMMAND);
- }
-
- next_ptr = (priv(dev)->tx_head + 1) & 15;
- local_irq_restore(flags);
-
- dev_kfree_skb(skb);
-
- if (priv(dev)->tx_tail == next_ptr)
- netif_stop_queue(dev);
-
- out:
- return NETDEV_TX_OK;
-}
-
-static irqreturn_t
-ether3_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *)dev_id;
- unsigned int status, handled = IRQ_NONE;
-
-#if NET_DEBUG > 1
- if(net_debug & DEBUG_INT)
- printk("eth3irq: %d ", irq);
-#endif
-
- status = ether3_inw(REG_STATUS);
-
- if (status & STAT_INTRX) {
- ether3_outw(CMD_ACKINTRX | priv(dev)->regs.command, REG_COMMAND);
- ether3_rx(dev, 12);
- handled = IRQ_HANDLED;
- }
-
- if (status & STAT_INTTX) {
- ether3_outw(CMD_ACKINTTX | priv(dev)->regs.command, REG_COMMAND);
- ether3_tx(dev);
- handled = IRQ_HANDLED;
- }
-
-#if NET_DEBUG > 1
- if(net_debug & DEBUG_INT)
- printk("done\n");
-#endif
- return handled;
-}
-
-/*
- * If we have a good packet(s), get it/them out of the buffers.
- */
-static int ether3_rx(struct net_device *dev, unsigned int maxcnt)
-{
- unsigned int next_ptr = priv(dev)->rx_head, received = 0;
-
- ether3_ledon(dev);
-
- do {
- unsigned int this_ptr, status;
- unsigned char addrs[16];
-
- /*
- * read the first 16 bytes from the buffer.
- * This contains the status bytes etc and ethernet addresses,
- * and we also check the source ethernet address to see if
- * it originated from us.
- */
- {
- unsigned int temp_ptr;
- ether3_setbuffer(dev, buffer_read, next_ptr);
- temp_ptr = ether3_readword(dev);
- status = ether3_readword(dev);
- if ((status & (RXSTAT_DONE | RXHDR_CHAINCONTINUE | RXHDR_RECEIVE)) !=
- (RXSTAT_DONE | RXHDR_CHAINCONTINUE) || !temp_ptr)
- break;
-
- this_ptr = next_ptr + 4;
- next_ptr = ntohs(temp_ptr);
- }
- ether3_setbuffer(dev, buffer_read, this_ptr);
- ether3_readbuffer(dev, addrs+2, 12);
-
-if (next_ptr < RX_START || next_ptr >= RX_END) {
- int i;
- printk("%s: bad next pointer @%04X: ", dev->name, priv(dev)->rx_head);
- printk("%02X %02X %02X %02X ", next_ptr >> 8, next_ptr & 255, status & 255, status >> 8);
- for (i = 2; i < 14; i++)
- printk("%02X ", addrs[i]);
- printk("\n");
- next_ptr = priv(dev)->rx_head;
- break;
-}
- /*
- * ignore our own packets...
- */
- if (!(*(unsigned long *)&dev->dev_addr[0] ^ *(unsigned long *)&addrs[2+6]) &&
- !(*(unsigned short *)&dev->dev_addr[4] ^ *(unsigned short *)&addrs[2+10])) {
- maxcnt ++; /* compensate for loopedback packet */
- ether3_outw(next_ptr >> 8, REG_RECVEND);
- } else
- if (!(status & (RXSTAT_OVERSIZE|RXSTAT_CRCERROR|RXSTAT_DRIBBLEERROR|RXSTAT_SHORTPACKET))) {
- unsigned int length = next_ptr - this_ptr;
- struct sk_buff *skb;
-
- if (next_ptr <= this_ptr)
- length += RX_END - RX_START;
-
- skb = dev_alloc_skb(length + 2);
- if (skb) {
- unsigned char *buf;
-
- skb_reserve(skb, 2);
- buf = skb_put(skb, length);
- ether3_readbuffer(dev, buf + 12, length - 12);
- ether3_outw(next_ptr >> 8, REG_RECVEND);
- *(unsigned short *)(buf + 0) = *(unsigned short *)(addrs + 2);
- *(unsigned long *)(buf + 2) = *(unsigned long *)(addrs + 4);
- *(unsigned long *)(buf + 6) = *(unsigned long *)(addrs + 8);
- *(unsigned short *)(buf + 10) = *(unsigned short *)(addrs + 12);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- received ++;
- } else
- goto dropping;
- } else {
- struct net_device_stats *stats = &dev->stats;
- ether3_outw(next_ptr >> 8, REG_RECVEND);
- if (status & RXSTAT_OVERSIZE) stats->rx_over_errors ++;
- if (status & RXSTAT_CRCERROR) stats->rx_crc_errors ++;
- if (status & RXSTAT_DRIBBLEERROR) stats->rx_fifo_errors ++;
- if (status & RXSTAT_SHORTPACKET) stats->rx_length_errors ++;
- stats->rx_errors++;
- }
- }
- while (-- maxcnt);
-
-done:
- dev->stats.rx_packets += received;
- priv(dev)->rx_head = next_ptr;
- /*
- * If rx went off line, then that means that the buffer may be full. We
- * have dropped at least one packet.
- */
- if (!(ether3_inw(REG_STATUS) & STAT_RXON)) {
- dev->stats.rx_dropped++;
- ether3_outw(next_ptr, REG_RECVPTR);
- ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND);
- }
-
- return maxcnt;
-
-dropping:{
- static unsigned long last_warned;
-
- ether3_outw(next_ptr >> 8, REG_RECVEND);
- /*
- * Don't print this message too many times...
- */
- if (time_after(jiffies, last_warned + 10 * HZ)) {
- last_warned = jiffies;
- printk("%s: memory squeeze, dropping packet.\n", dev->name);
- }
- dev->stats.rx_dropped++;
- goto done;
- }
-}
-
-/*
- * Update stats for the transmitted packet(s)
- */
-static void ether3_tx(struct net_device *dev)
-{
- unsigned int tx_tail = priv(dev)->tx_tail;
- int max_work = 14;
-
- do {
- unsigned long status;
-
- /*
- * Read the packet header
- */
- ether3_setbuffer(dev, buffer_read, tx_tail * 0x600);
- status = ether3_readlong(dev);
-
- /*
- * Check to see if this packet has been transmitted
- */
- if ((status & (TXSTAT_DONE | TXHDR_TRANSMIT)) !=
- (TXSTAT_DONE | TXHDR_TRANSMIT))
- break;
-
- /*
- * Update errors
- */
- if (!(status & (TXSTAT_BABBLED | TXSTAT_16COLLISIONS)))
- dev->stats.tx_packets++;
- else {
- dev->stats.tx_errors++;
- if (status & TXSTAT_16COLLISIONS)
- dev->stats.collisions += 16;
- if (status & TXSTAT_BABBLED)
- dev->stats.tx_fifo_errors++;
- }
-
- tx_tail = (tx_tail + 1) & 15;
- } while (--max_work);
-
- if (priv(dev)->tx_tail != tx_tail) {
- priv(dev)->tx_tail = tx_tail;
- netif_wake_queue(dev);
- }
-}
-
-static void __devinit ether3_banner(void)
-{
- static unsigned version_printed = 0;
-
- if (net_debug && version_printed++ == 0)
- printk(KERN_INFO "%s", version);
-}
-
-static const struct net_device_ops ether3_netdev_ops = {
- .ndo_open = ether3_open,
- .ndo_stop = ether3_close,
- .ndo_start_xmit = ether3_sendpacket,
- .ndo_set_multicast_list = ether3_setmulticastlist,
- .ndo_tx_timeout = ether3_timeout,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-static int __devinit
-ether3_probe(struct expansion_card *ec, const struct ecard_id *id)
-{
- const struct ether3_data *data = id->data;
- struct net_device *dev;
- int bus_type, ret;
-
- ether3_banner();
-
- ret = ecard_request_resources(ec);
- if (ret)
- goto out;
-
- dev = alloc_etherdev(sizeof(struct dev_priv));
- if (!dev) {
- ret = -ENOMEM;
- goto release;
- }
-
- SET_NETDEV_DEV(dev, &ec->dev);
-
- priv(dev)->base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
- if (!priv(dev)->base) {
- ret = -ENOMEM;
- goto free;
- }
-
- ec->irqaddr = priv(dev)->base + data->base_offset;
- ec->irqmask = 0xf0;
-
- priv(dev)->seeq = priv(dev)->base + data->base_offset;
- dev->irq = ec->irq;
-
- ether3_addr(dev->dev_addr, ec);
-
- init_timer(&priv(dev)->timer);
-
- /* Reset card...
- */
- ether3_outb(0x80, REG_CONFIG2 + 4);
- bus_type = BUS_UNKNOWN;
- udelay(4);
-
- /* Test using Receive Pointer (16-bit register) to find out
- * how the ether3 is connected to the bus...
- */
- if (ether3_probe_bus_8(dev, 0x100) &&
- ether3_probe_bus_8(dev, 0x201))
- bus_type = BUS_8;
-
- if (bus_type == BUS_UNKNOWN &&
- ether3_probe_bus_16(dev, 0x101) &&
- ether3_probe_bus_16(dev, 0x201))
- bus_type = BUS_16;
-
- switch (bus_type) {
- case BUS_UNKNOWN:
- printk(KERN_ERR "%s: unable to identify bus width\n", dev->name);
- ret = -ENODEV;
- goto free;
-
- case BUS_8:
- printk(KERN_ERR "%s: %s found, but is an unsupported "
- "8-bit card\n", dev->name, data->name);
- ret = -ENODEV;
- goto free;
-
- default:
- break;
- }
-
- if (ether3_init_2(dev)) {
- ret = -ENODEV;
- goto free;
- }
-
- dev->netdev_ops = ðer3_netdev_ops;
- dev->watchdog_timeo = 5 * HZ / 100;
-
- ret = register_netdev(dev);
- if (ret)
- goto free;
-
- printk("%s: %s in slot %d, %pM\n",
- dev->name, data->name, ec->slot_no, dev->dev_addr);
-
- ecard_set_drvdata(ec, dev);
- return 0;
-
- free:
- free_netdev(dev);
- release:
- ecard_release_resources(ec);
- out:
- return ret;
-}
-
-static void __devexit ether3_remove(struct expansion_card *ec)
-{
- struct net_device *dev = ecard_get_drvdata(ec);
-
- ecard_set_drvdata(ec, NULL);
-
- unregister_netdev(dev);
- free_netdev(dev);
- ecard_release_resources(ec);
-}
-
-static struct ether3_data ether3 = {
- .name = "ether3",
- .base_offset = 0,
-};
-
-static struct ether3_data etherb = {
- .name = "etherb",
- .base_offset = 0x800,
-};
-
-static const struct ecard_id ether3_ids[] = {
- { MANU_ANT2, PROD_ANT_ETHER3, ðer3 },
- { MANU_ANT, PROD_ANT_ETHER3, ðer3 },
- { MANU_ANT, PROD_ANT_ETHERB, ðerb },
- { 0xffff, 0xffff }
-};
-
-static struct ecard_driver ether3_driver = {
- .probe = ether3_probe,
- .remove = __devexit_p(ether3_remove),
- .id_table = ether3_ids,
- .drv = {
- .name = "ether3",
- },
-};
-
-static int __init ether3_init(void)
-{
- return ecard_register_driver(ðer3_driver);
-}
-
-static void __exit ether3_exit(void)
-{
- ecard_remove_driver(ðer3_driver);
-}
-
-module_init(ether3_init);
-module_exit(ether3_exit);
-
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * linux/drivers/acorn/net/ether3.h
- *
- * Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * network driver for Acorn/ANT Ether3 cards
- */
-
-#ifndef _LINUX_ether3_H
-#define _LINUX_ether3_H
-
-/* use 0 for production, 1 for verification, >2 for debug. debug flags: */
-#define DEBUG_TX 2
-#define DEBUG_RX 4
-#define DEBUG_INT 8
-#define DEBUG_IC 16
-#ifndef NET_DEBUG
-#define NET_DEBUG 0
-#endif
-
-#define priv(dev) ((struct dev_priv *)netdev_priv(dev))
-
-/* Command register definitions & bits */
-#define REG_COMMAND (priv(dev)->seeq + 0x0000)
-#define CMD_ENINTDMA 0x0001
-#define CMD_ENINTRX 0x0002
-#define CMD_ENINTTX 0x0004
-#define CMD_ENINTBUFWIN 0x0008
-#define CMD_ACKINTDMA 0x0010
-#define CMD_ACKINTRX 0x0020
-#define CMD_ACKINTTX 0x0040
-#define CMD_ACKINTBUFWIN 0x0080
-#define CMD_DMAON 0x0100
-#define CMD_RXON 0x0200
-#define CMD_TXON 0x0400
-#define CMD_DMAOFF 0x0800
-#define CMD_RXOFF 0x1000
-#define CMD_TXOFF 0x2000
-#define CMD_FIFOREAD 0x4000
-#define CMD_FIFOWRITE 0x8000
-
-/* status register */
-#define REG_STATUS (priv(dev)->seeq + 0x0000)
-#define STAT_ENINTSTAT 0x0001
-#define STAT_ENINTRX 0x0002
-#define STAT_ENINTTX 0x0004
-#define STAT_ENINTBUFWIN 0x0008
-#define STAT_INTDMA 0x0010
-#define STAT_INTRX 0x0020
-#define STAT_INTTX 0x0040
-#define STAT_INTBUFWIN 0x0080
-#define STAT_DMAON 0x0100
-#define STAT_RXON 0x0200
-#define STAT_TXON 0x0400
-#define STAT_FIFOFULL 0x2000
-#define STAT_FIFOEMPTY 0x4000
-#define STAT_FIFODIR 0x8000
-
-/* configuration register 1 */
-#define REG_CONFIG1 (priv(dev)->seeq + 0x0040)
-#define CFG1_BUFSELSTAT0 0x0000
-#define CFG1_BUFSELSTAT1 0x0001
-#define CFG1_BUFSELSTAT2 0x0002
-#define CFG1_BUFSELSTAT3 0x0003
-#define CFG1_BUFSELSTAT4 0x0004
-#define CFG1_BUFSELSTAT5 0x0005
-#define CFG1_ADDRPROM 0x0006
-#define CFG1_TRANSEND 0x0007
-#define CFG1_LOCBUFMEM 0x0008
-#define CFG1_INTVECTOR 0x0009
-#define CFG1_RECVSPECONLY 0x0000
-#define CFG1_RECVSPECBROAD 0x4000
-#define CFG1_RECVSPECBRMULTI 0x8000
-#define CFG1_RECVPROMISC 0xC000
-
-/* The following aren't in 8004 */
-#define CFG1_DMABURSTCONT 0x0000
-#define CFG1_DMABURST800NS 0x0010
-#define CFG1_DMABURST1600NS 0x0020
-#define CFG1_DMABURST3200NS 0x0030
-#define CFG1_DMABURST1 0x0000
-#define CFG1_DMABURST4 0x0040
-#define CFG1_DMABURST8 0x0080
-#define CFG1_DMABURST16 0x00C0
-#define CFG1_RECVCOMPSTAT0 0x0100
-#define CFG1_RECVCOMPSTAT1 0x0200
-#define CFG1_RECVCOMPSTAT2 0x0400
-#define CFG1_RECVCOMPSTAT3 0x0800
-#define CFG1_RECVCOMPSTAT4 0x1000
-#define CFG1_RECVCOMPSTAT5 0x2000
-
-/* configuration register 2 */
-#define REG_CONFIG2 (priv(dev)->seeq + 0x0080)
-#define CFG2_BYTESWAP 0x0001
-#define CFG2_ERRENCRC 0x0008
-#define CFG2_ERRENDRIBBLE 0x0010
-#define CFG2_ERRSHORTFRAME 0x0020
-#define CFG2_SLOTSELECT 0x0040
-#define CFG2_PREAMSELECT 0x0080
-#define CFG2_ADDRLENGTH 0x0100
-#define CFG2_RECVCRC 0x0200
-#define CFG2_XMITNOCRC 0x0400
-#define CFG2_LOOPBACK 0x0800
-#define CFG2_CTRLO 0x1000
-#define CFG2_RESET 0x8000
-
-#define REG_RECVEND (priv(dev)->seeq + 0x00c0)
-
-#define REG_BUFWIN (priv(dev)->seeq + 0x0100)
-
-#define REG_RECVPTR (priv(dev)->seeq + 0x0140)
-
-#define REG_TRANSMITPTR (priv(dev)->seeq + 0x0180)
-
-#define REG_DMAADDR (priv(dev)->seeq + 0x01c0)
-
-/*
- * Cards transmit/receive headers
- */
-#define TX_NEXT (0xffff)
-#define TXHDR_ENBABBLEINT (1 << 16)
-#define TXHDR_ENCOLLISIONINT (1 << 17)
-#define TXHDR_EN16COLLISION (1 << 18)
-#define TXHDR_ENSUCCESS (1 << 19)
-#define TXHDR_DATAFOLLOWS (1 << 21)
-#define TXHDR_CHAINCONTINUE (1 << 22)
-#define TXHDR_TRANSMIT (1 << 23)
-#define TXSTAT_BABBLED (1 << 24)
-#define TXSTAT_COLLISION (1 << 25)
-#define TXSTAT_16COLLISIONS (1 << 26)
-#define TXSTAT_DONE (1 << 31)
-
-#define RX_NEXT (0xffff)
-#define RXHDR_CHAINCONTINUE (1 << 6)
-#define RXHDR_RECEIVE (1 << 7)
-#define RXSTAT_OVERSIZE (1 << 8)
-#define RXSTAT_CRCERROR (1 << 9)
-#define RXSTAT_DRIBBLEERROR (1 << 10)
-#define RXSTAT_SHORTPACKET (1 << 11)
-#define RXSTAT_DONE (1 << 15)
-
-
-#define TX_START 0x0000
-#define TX_END 0x6000
-#define RX_START 0x6000
-#define RX_LEN 0xA000
-#define RX_END 0x10000
-/* must be a power of 2 and greater than MAX_TX_BUFFERED */
-#define MAX_TXED 16
-#define MAX_TX_BUFFERED 10
-
-struct dev_priv {
- void __iomem *base;
- void __iomem *seeq;
- struct {
- unsigned int command;
- unsigned int config1;
- unsigned int config2;
- } regs;
- unsigned char tx_head; /* buffer nr to insert next packet */
- unsigned char tx_tail; /* buffer nr of transmitting packet */
- unsigned int rx_head; /* address to fetch next packet from */
- struct timer_list timer;
- int broken; /* 0 = ok, 1 = something went wrong */
-};
-
-struct ether3_data {
- const char name[8];
- unsigned long base_offset;
-};
-
-#endif
source "drivers/net/ethernet/qlogic/Kconfig"
source "drivers/net/ethernet/racal/Kconfig"
source "drivers/net/ethernet/realtek/Kconfig"
+source "drivers/net/ethernet/seeq/Kconfig"
source "drivers/net/ethernet/sfc/Kconfig"
source "drivers/net/ethernet/sgi/Kconfig"
source "drivers/net/ethernet/smsc/Kconfig"
obj-$(CONFIG_NET_VENDOR_QLOGIC) += qlogic/
obj-$(CONFIG_NET_VENDOR_RACAL) += racal/
obj-$(CONFIG_NET_VENDOR_REALTEK) += realtek/
+obj-$(CONFIG_NET_VENDOR_SEEQ) += seeq/
obj-$(CONFIG_SFC) += sfc/
obj-$(CONFIG_NET_VENDOR_SGI) += sgi/
obj-$(CONFIG_NET_VENDOR_SMSC) += smsc/
--- /dev/null
+#
+# SEEQ device configuration
+#
+
+config NET_VENDOR_SEEQ
+ bool "SEEQ devices"
+ depends on (ARM && ARCH_ACORN) || SGI_HAS_SEEQ || EXPERIMENTAL
+ ---help---
+ If you have a network (Ethernet) card belonging to this class, say Y
+ and read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about SEEQ devices. If you say Y, you will be asked for
+ your specific card in the following questions.
+
+if NET_VENDOR_SEEQ
+
+config ARM_ETHER3
+ tristate "Acorn/ANT Ether3 support"
+ depends on ARM && ARCH_ACORN
+ ---help---
+ If you have an Acorn system with one of these network cards, you
+ should say Y to this option if you wish to use it with Linux.
+
+config SEEQ8005
+ tristate "SEEQ8005 support (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ ---help---
+ This is a driver for the SEEQ 8005 network (Ethernet) card. If this
+ is for you, read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ To compile this driver as a module, choose M here. The module
+ will be called seeq8005.
+
+config SGISEEQ
+ tristate "SGI Seeq ethernet controller support"
+ depends on SGI_HAS_SEEQ
+ ---help---
+ Say Y here if you have an Seeq based Ethernet network card. This is
+ used in many Silicon Graphics machines.
+
+endif # NET_VENDOR_SEEQ
--- /dev/null
+#
+# Makefile for the SEEQ network device drivers
+#
+
+obj-$(CONFIG_ARM_ETHER3) += ether3.o
+obj-$(CONFIG_SEEQ8005) += seeq8005.o
+obj-$(CONFIG_SGISEEQ) += sgiseeq.o
--- /dev/null
+/*
+ * linux/drivers/acorn/net/ether3.c
+ *
+ * Copyright (C) 1995-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card
+ * for Acorn machines
+ *
+ * By Russell King, with some suggestions from borris@ant.co.uk
+ *
+ * Changelog:
+ * 1.04 RMK 29/02/1996 Won't pass packets that are from our ethernet
+ * address up to the higher levels - they're
+ * silently ignored. I/F can now be put into
+ * multicast mode. Receiver routine optimised.
+ * 1.05 RMK 30/02/1996 Now claims interrupt at open when part of
+ * the kernel rather than when a module.
+ * 1.06 RMK 02/03/1996 Various code cleanups
+ * 1.07 RMK 13/10/1996 Optimised interrupt routine and transmit
+ * routines.
+ * 1.08 RMK 14/10/1996 Fixed problem with too many packets,
+ * prevented the kernel message about dropped
+ * packets appearing too many times a second.
+ * Now does not disable all IRQs, only the IRQ
+ * used by this card.
+ * 1.09 RMK 10/11/1996 Only enables TX irq when buffer space is low,
+ * but we still service the TX queue if we get a
+ * RX interrupt.
+ * 1.10 RMK 15/07/1997 Fixed autoprobing of NQ8004.
+ * 1.11 RMK 16/11/1997 Fixed autoprobing of NQ8005A.
+ * 1.12 RMK 31/12/1997 Removed reference to dev_tint for Linux 2.1.
+ * RMK 27/06/1998 Changed asm/delay.h to linux/delay.h.
+ * 1.13 RMK 29/06/1998 Fixed problem with transmission of packets.
+ * Chip seems to have a bug in, whereby if the
+ * packet starts two bytes from the end of the
+ * buffer, it corrupts the receiver chain, and
+ * never updates the transmit status correctly.
+ * 1.14 RMK 07/01/1998 Added initial code for ETHERB addressing.
+ * 1.15 RMK 30/04/1999 More fixes to the transmit routine for buggy
+ * hardware.
+ * 1.16 RMK 10/02/2000 Updated for 2.3.43
+ * 1.17 RMK 13/05/2000 Updated for 2.3.99-pre8
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/ecard.h>
+#include <asm/io.h>
+
+static char version[] __devinitdata = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n";
+
+#include "ether3.h"
+
+static unsigned int net_debug = NET_DEBUG;
+
+static void ether3_setmulticastlist(struct net_device *dev);
+static int ether3_rx(struct net_device *dev, unsigned int maxcnt);
+static void ether3_tx(struct net_device *dev);
+static int ether3_open (struct net_device *dev);
+static int ether3_sendpacket (struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t ether3_interrupt (int irq, void *dev_id);
+static int ether3_close (struct net_device *dev);
+static void ether3_setmulticastlist (struct net_device *dev);
+static void ether3_timeout(struct net_device *dev);
+
+#define BUS_16 2
+#define BUS_8 1
+#define BUS_UNKNOWN 0
+
+/* --------------------------------------------------------------------------- */
+
+typedef enum {
+ buffer_write,
+ buffer_read
+} buffer_rw_t;
+
+/*
+ * ether3 read/write. Slow things down a bit...
+ * The SEEQ8005 doesn't like us writing to its registers
+ * too quickly.
+ */
+static inline void ether3_outb(int v, const void __iomem *r)
+{
+ writeb(v, r);
+ udelay(1);
+}
+
+static inline void ether3_outw(int v, const void __iomem *r)
+{
+ writew(v, r);
+ udelay(1);
+}
+#define ether3_inb(r) ({ unsigned int __v = readb((r)); udelay(1); __v; })
+#define ether3_inw(r) ({ unsigned int __v = readw((r)); udelay(1); __v; })
+
+static int
+ether3_setbuffer(struct net_device *dev, buffer_rw_t read, int start)
+{
+ int timeout = 1000;
+
+ ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
+ ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
+
+ while ((ether3_inw(REG_STATUS) & STAT_FIFOEMPTY) == 0) {
+ if (!timeout--) {
+ printk("%s: setbuffer broken\n", dev->name);
+ priv(dev)->broken = 1;
+ return 1;
+ }
+ udelay(1);
+ }
+
+ if (read == buffer_read) {
+ ether3_outw(start, REG_DMAADDR);
+ ether3_outw(priv(dev)->regs.command | CMD_FIFOREAD, REG_COMMAND);
+ } else {
+ ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
+ ether3_outw(start, REG_DMAADDR);
+ }
+ return 0;
+}
+
+/*
+ * write data to the buffer memory
+ */
+#define ether3_writebuffer(dev,data,length) \
+ writesw(REG_BUFWIN, (data), (length) >> 1)
+
+#define ether3_writeword(dev,data) \
+ writew((data), REG_BUFWIN)
+
+#define ether3_writelong(dev,data) { \
+ void __iomem *reg_bufwin = REG_BUFWIN; \
+ writew((data), reg_bufwin); \
+ writew((data) >> 16, reg_bufwin); \
+}
+
+/*
+ * read data from the buffer memory
+ */
+#define ether3_readbuffer(dev,data,length) \
+ readsw(REG_BUFWIN, (data), (length) >> 1)
+
+#define ether3_readword(dev) \
+ readw(REG_BUFWIN)
+
+#define ether3_readlong(dev) \
+ readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16)
+
+/*
+ * Switch LED off...
+ */
+static void ether3_ledoff(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *)data;
+ ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2);
+}
+
+/*
+ * switch LED on...
+ */
+static inline void ether3_ledon(struct net_device *dev)
+{
+ del_timer(&priv(dev)->timer);
+ priv(dev)->timer.expires = jiffies + HZ / 50; /* leave on for 1/50th second */
+ priv(dev)->timer.data = (unsigned long)dev;
+ priv(dev)->timer.function = ether3_ledoff;
+ add_timer(&priv(dev)->timer);
+ if (priv(dev)->regs.config2 & CFG2_CTRLO)
+ ether3_outw(priv(dev)->regs.config2 &= ~CFG2_CTRLO, REG_CONFIG2);
+}
+
+/*
+ * Read the ethernet address string from the on board rom.
+ * This is an ascii string!!!
+ */
+static int __devinit
+ether3_addr(char *addr, struct expansion_card *ec)
+{
+ struct in_chunk_dir cd;
+ char *s;
+
+ if (ecard_readchunk(&cd, ec, 0xf5, 0) && (s = strchr(cd.d.string, '('))) {
+ int i;
+ for (i = 0; i<6; i++) {
+ addr[i] = simple_strtoul(s + 1, &s, 0x10);
+ if (*s != (i==5?')' : ':' ))
+ break;
+ }
+ if (i == 6)
+ return 0;
+ }
+ /* I wonder if we should even let the user continue in this case
+ * - no, it would be better to disable the device
+ */
+ printk(KERN_ERR "ether3: Couldn't read a valid MAC address from card.\n");
+ return -ENODEV;
+}
+
+/* --------------------------------------------------------------------------- */
+
+static int __devinit
+ether3_ramtest(struct net_device *dev, unsigned char byte)
+{
+ unsigned char *buffer = kmalloc(RX_END, GFP_KERNEL);
+ int i,ret = 0;
+ int max_errors = 4;
+ int bad = -1;
+
+ if (!buffer)
+ return 1;
+
+ memset(buffer, byte, RX_END);
+ ether3_setbuffer(dev, buffer_write, 0);
+ ether3_writebuffer(dev, buffer, TX_END);
+ ether3_setbuffer(dev, buffer_write, RX_START);
+ ether3_writebuffer(dev, buffer + RX_START, RX_LEN);
+ memset(buffer, byte ^ 0xff, RX_END);
+ ether3_setbuffer(dev, buffer_read, 0);
+ ether3_readbuffer(dev, buffer, TX_END);
+ ether3_setbuffer(dev, buffer_read, RX_START);
+ ether3_readbuffer(dev, buffer + RX_START, RX_LEN);
+
+ for (i = 0; i < RX_END; i++) {
+ if (buffer[i] != byte) {
+ if (max_errors > 0 && bad != buffer[i]) {
+ printk("%s: RAM failed with (%02X instead of %02X) at 0x%04X",
+ dev->name, buffer[i], byte, i);
+ ret = 2;
+ max_errors--;
+ bad = i;
+ }
+ } else {
+ if (bad != -1) {
+ if (bad != i - 1)
+ printk(" - 0x%04X\n", i - 1);
+ printk("\n");
+ bad = -1;
+ }
+ }
+ }
+ if (bad != -1)
+ printk(" - 0xffff\n");
+ kfree(buffer);
+
+ return ret;
+}
+
+/* ------------------------------------------------------------------------------- */
+
+static int __devinit ether3_init_2(struct net_device *dev)
+{
+ int i;
+
+ priv(dev)->regs.config1 = CFG1_RECVCOMPSTAT0|CFG1_DMABURST8;
+ priv(dev)->regs.config2 = CFG2_CTRLO|CFG2_RECVCRC|CFG2_ERRENCRC;
+ priv(dev)->regs.command = 0;
+
+ /*
+ * Set up our hardware address
+ */
+ ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1);
+ for (i = 0; i < 6; i++)
+ ether3_outb(dev->dev_addr[i], REG_BUFWIN);
+
+ if (dev->flags & IFF_PROMISC)
+ priv(dev)->regs.config1 |= CFG1_RECVPROMISC;
+ else if (dev->flags & IFF_MULTICAST)
+ priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI;
+ else
+ priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD;
+
+ /*
+ * There is a problem with the NQ8005 in that it occasionally loses the
+ * last two bytes. To get round this problem, we receive the CRC as
+ * well. That way, if we do lose the last two, then it doesn't matter.
+ */
+ ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1);
+ ether3_outw((TX_END>>8) - 1, REG_BUFWIN);
+ ether3_outw(priv(dev)->rx_head, REG_RECVPTR);
+ ether3_outw(0, REG_TRANSMITPTR);
+ ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND);
+ ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
+ ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
+ ether3_outw(priv(dev)->regs.command, REG_COMMAND);
+
+ i = ether3_ramtest(dev, 0x5A);
+ if(i)
+ return i;
+ i = ether3_ramtest(dev, 0x1E);
+ if(i)
+ return i;
+
+ ether3_setbuffer(dev, buffer_write, 0);
+ ether3_writelong(dev, 0);
+ return 0;
+}
+
+static void
+ether3_init_for_open(struct net_device *dev)
+{
+ int i;
+
+ /* Reset the chip */
+ ether3_outw(CFG2_RESET, REG_CONFIG2);
+ udelay(4);
+
+ priv(dev)->regs.command = 0;
+ ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND);
+ while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON))
+ barrier();
+
+ ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1);
+ for (i = 0; i < 6; i++)
+ ether3_outb(dev->dev_addr[i], REG_BUFWIN);
+
+ priv(dev)->tx_head = 0;
+ priv(dev)->tx_tail = 0;
+ priv(dev)->regs.config2 |= CFG2_CTRLO;
+ priv(dev)->rx_head = RX_START;
+
+ ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1);
+ ether3_outw((TX_END>>8) - 1, REG_BUFWIN);
+ ether3_outw(priv(dev)->rx_head, REG_RECVPTR);
+ ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND);
+ ether3_outw(0, REG_TRANSMITPTR);
+ ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
+ ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
+
+ ether3_setbuffer(dev, buffer_write, 0);
+ ether3_writelong(dev, 0);
+
+ priv(dev)->regs.command = CMD_ENINTRX | CMD_ENINTTX;
+ ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND);
+}
+
+static inline int
+ether3_probe_bus_8(struct net_device *dev, int val)
+{
+ int write_low, write_high, read_low, read_high;
+
+ write_low = val & 255;
+ write_high = val >> 8;
+
+ printk(KERN_DEBUG "ether3_probe: write8 [%02X:%02X]", write_high, write_low);
+
+ ether3_outb(write_low, REG_RECVPTR);
+ ether3_outb(write_high, REG_RECVPTR + 4);
+
+ read_low = ether3_inb(REG_RECVPTR);
+ read_high = ether3_inb(REG_RECVPTR + 4);
+
+ printk(", read8 [%02X:%02X]\n", read_high, read_low);
+
+ return read_low == write_low && read_high == write_high;
+}
+
+static inline int
+ether3_probe_bus_16(struct net_device *dev, int val)
+{
+ int read_val;
+
+ ether3_outw(val, REG_RECVPTR);
+ read_val = ether3_inw(REG_RECVPTR);
+
+ printk(KERN_DEBUG "ether3_probe: write16 [%04X], read16 [%04X]\n", val, read_val);
+
+ return read_val == val;
+}
+
+/*
+ * Open/initialize the board. This is called (in the current kernel)
+ * sometime after booting when the 'ifconfig' program is run.
+ *
+ * This routine should set everything up anew at each open, even
+ * registers that "should" only need to be set once at boot, so that
+ * there is non-reboot way to recover if something goes wrong.
+ */
+static int
+ether3_open(struct net_device *dev)
+{
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ printk(KERN_WARNING "%s: invalid ethernet MAC address\n",
+ dev->name);
+ return -EINVAL;
+ }
+
+ if (request_irq(dev->irq, ether3_interrupt, 0, "ether3", dev))
+ return -EAGAIN;
+
+ ether3_init_for_open(dev);
+
+ netif_start_queue(dev);
+
+ return 0;
+}
+
+/*
+ * The inverse routine to ether3_open().
+ */
+static int
+ether3_close(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+
+ disable_irq(dev->irq);
+
+ ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND);
+ priv(dev)->regs.command = 0;
+ while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON))
+ barrier();
+ ether3_outb(0x80, REG_CONFIG2 + 4);
+ ether3_outw(0, REG_COMMAND);
+
+ free_irq(dev->irq, dev);
+
+ return 0;
+}
+
+/*
+ * Set or clear promiscuous/multicast mode filter for this adaptor.
+ *
+ * We don't attempt any packet filtering. The card may have a SEEQ 8004
+ * in which does not have the other ethernet address registers present...
+ */
+static void ether3_setmulticastlist(struct net_device *dev)
+{
+ priv(dev)->regs.config1 &= ~CFG1_RECVPROMISC;
+
+ if (dev->flags & IFF_PROMISC) {
+ /* promiscuous mode */
+ priv(dev)->regs.config1 |= CFG1_RECVPROMISC;
+ } else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
+ priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI;
+ } else
+ priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD;
+
+ ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
+}
+
+static void ether3_timeout(struct net_device *dev)
+{
+ unsigned long flags;
+
+ del_timer(&priv(dev)->timer);
+
+ local_irq_save(flags);
+ printk(KERN_ERR "%s: transmit timed out, network cable problem?\n", dev->name);
+ printk(KERN_ERR "%s: state: { status=%04X cfg1=%04X cfg2=%04X }\n", dev->name,
+ ether3_inw(REG_STATUS), ether3_inw(REG_CONFIG1), ether3_inw(REG_CONFIG2));
+ printk(KERN_ERR "%s: { rpr=%04X rea=%04X tpr=%04X }\n", dev->name,
+ ether3_inw(REG_RECVPTR), ether3_inw(REG_RECVEND), ether3_inw(REG_TRANSMITPTR));
+ printk(KERN_ERR "%s: tx head=%X tx tail=%X\n", dev->name,
+ priv(dev)->tx_head, priv(dev)->tx_tail);
+ ether3_setbuffer(dev, buffer_read, priv(dev)->tx_tail);
+ printk(KERN_ERR "%s: packet status = %08X\n", dev->name, ether3_readlong(dev));
+ local_irq_restore(flags);
+
+ priv(dev)->regs.config2 |= CFG2_CTRLO;
+ dev->stats.tx_errors += 1;
+ ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
+ priv(dev)->tx_head = priv(dev)->tx_tail = 0;
+
+ netif_wake_queue(dev);
+}
+
+/*
+ * Transmit a packet
+ */
+static int
+ether3_sendpacket(struct sk_buff *skb, struct net_device *dev)
+{
+ unsigned long flags;
+ unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+ unsigned int ptr, next_ptr;
+
+ if (priv(dev)->broken) {
+ dev_kfree_skb(skb);
+ dev->stats.tx_dropped++;
+ netif_start_queue(dev);
+ return NETDEV_TX_OK;
+ }
+
+ length = (length + 1) & ~1;
+ if (length != skb->len) {
+ if (skb_padto(skb, length))
+ goto out;
+ }
+
+ next_ptr = (priv(dev)->tx_head + 1) & 15;
+
+ local_irq_save(flags);
+
+ if (priv(dev)->tx_tail == next_ptr) {
+ local_irq_restore(flags);
+ return NETDEV_TX_BUSY; /* unable to queue */
+ }
+
+ ptr = 0x600 * priv(dev)->tx_head;
+ priv(dev)->tx_head = next_ptr;
+ next_ptr *= 0x600;
+
+#define TXHDR_FLAGS (TXHDR_TRANSMIT|TXHDR_CHAINCONTINUE|TXHDR_DATAFOLLOWS|TXHDR_ENSUCCESS)
+
+ ether3_setbuffer(dev, buffer_write, next_ptr);
+ ether3_writelong(dev, 0);
+ ether3_setbuffer(dev, buffer_write, ptr);
+ ether3_writelong(dev, 0);
+ ether3_writebuffer(dev, skb->data, length);
+ ether3_writeword(dev, htons(next_ptr));
+ ether3_writeword(dev, TXHDR_CHAINCONTINUE >> 16);
+ ether3_setbuffer(dev, buffer_write, ptr);
+ ether3_writeword(dev, htons((ptr + length + 4)));
+ ether3_writeword(dev, TXHDR_FLAGS >> 16);
+ ether3_ledon(dev);
+
+ if (!(ether3_inw(REG_STATUS) & STAT_TXON)) {
+ ether3_outw(ptr, REG_TRANSMITPTR);
+ ether3_outw(priv(dev)->regs.command | CMD_TXON, REG_COMMAND);
+ }
+
+ next_ptr = (priv(dev)->tx_head + 1) & 15;
+ local_irq_restore(flags);
+
+ dev_kfree_skb(skb);
+
+ if (priv(dev)->tx_tail == next_ptr)
+ netif_stop_queue(dev);
+
+ out:
+ return NETDEV_TX_OK;
+}
+
+static irqreturn_t
+ether3_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ unsigned int status, handled = IRQ_NONE;
+
+#if NET_DEBUG > 1
+ if(net_debug & DEBUG_INT)
+ printk("eth3irq: %d ", irq);
+#endif
+
+ status = ether3_inw(REG_STATUS);
+
+ if (status & STAT_INTRX) {
+ ether3_outw(CMD_ACKINTRX | priv(dev)->regs.command, REG_COMMAND);
+ ether3_rx(dev, 12);
+ handled = IRQ_HANDLED;
+ }
+
+ if (status & STAT_INTTX) {
+ ether3_outw(CMD_ACKINTTX | priv(dev)->regs.command, REG_COMMAND);
+ ether3_tx(dev);
+ handled = IRQ_HANDLED;
+ }
+
+#if NET_DEBUG > 1
+ if(net_debug & DEBUG_INT)
+ printk("done\n");
+#endif
+ return handled;
+}
+
+/*
+ * If we have a good packet(s), get it/them out of the buffers.
+ */
+static int ether3_rx(struct net_device *dev, unsigned int maxcnt)
+{
+ unsigned int next_ptr = priv(dev)->rx_head, received = 0;
+
+ ether3_ledon(dev);
+
+ do {
+ unsigned int this_ptr, status;
+ unsigned char addrs[16];
+
+ /*
+ * read the first 16 bytes from the buffer.
+ * This contains the status bytes etc and ethernet addresses,
+ * and we also check the source ethernet address to see if
+ * it originated from us.
+ */
+ {
+ unsigned int temp_ptr;
+ ether3_setbuffer(dev, buffer_read, next_ptr);
+ temp_ptr = ether3_readword(dev);
+ status = ether3_readword(dev);
+ if ((status & (RXSTAT_DONE | RXHDR_CHAINCONTINUE | RXHDR_RECEIVE)) !=
+ (RXSTAT_DONE | RXHDR_CHAINCONTINUE) || !temp_ptr)
+ break;
+
+ this_ptr = next_ptr + 4;
+ next_ptr = ntohs(temp_ptr);
+ }
+ ether3_setbuffer(dev, buffer_read, this_ptr);
+ ether3_readbuffer(dev, addrs+2, 12);
+
+if (next_ptr < RX_START || next_ptr >= RX_END) {
+ int i;
+ printk("%s: bad next pointer @%04X: ", dev->name, priv(dev)->rx_head);
+ printk("%02X %02X %02X %02X ", next_ptr >> 8, next_ptr & 255, status & 255, status >> 8);
+ for (i = 2; i < 14; i++)
+ printk("%02X ", addrs[i]);
+ printk("\n");
+ next_ptr = priv(dev)->rx_head;
+ break;
+}
+ /*
+ * ignore our own packets...
+ */
+ if (!(*(unsigned long *)&dev->dev_addr[0] ^ *(unsigned long *)&addrs[2+6]) &&
+ !(*(unsigned short *)&dev->dev_addr[4] ^ *(unsigned short *)&addrs[2+10])) {
+ maxcnt ++; /* compensate for loopedback packet */
+ ether3_outw(next_ptr >> 8, REG_RECVEND);
+ } else
+ if (!(status & (RXSTAT_OVERSIZE|RXSTAT_CRCERROR|RXSTAT_DRIBBLEERROR|RXSTAT_SHORTPACKET))) {
+ unsigned int length = next_ptr - this_ptr;
+ struct sk_buff *skb;
+
+ if (next_ptr <= this_ptr)
+ length += RX_END - RX_START;
+
+ skb = dev_alloc_skb(length + 2);
+ if (skb) {
+ unsigned char *buf;
+
+ skb_reserve(skb, 2);
+ buf = skb_put(skb, length);
+ ether3_readbuffer(dev, buf + 12, length - 12);
+ ether3_outw(next_ptr >> 8, REG_RECVEND);
+ *(unsigned short *)(buf + 0) = *(unsigned short *)(addrs + 2);
+ *(unsigned long *)(buf + 2) = *(unsigned long *)(addrs + 4);
+ *(unsigned long *)(buf + 6) = *(unsigned long *)(addrs + 8);
+ *(unsigned short *)(buf + 10) = *(unsigned short *)(addrs + 12);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ received ++;
+ } else
+ goto dropping;
+ } else {
+ struct net_device_stats *stats = &dev->stats;
+ ether3_outw(next_ptr >> 8, REG_RECVEND);
+ if (status & RXSTAT_OVERSIZE) stats->rx_over_errors ++;
+ if (status & RXSTAT_CRCERROR) stats->rx_crc_errors ++;
+ if (status & RXSTAT_DRIBBLEERROR) stats->rx_fifo_errors ++;
+ if (status & RXSTAT_SHORTPACKET) stats->rx_length_errors ++;
+ stats->rx_errors++;
+ }
+ }
+ while (-- maxcnt);
+
+done:
+ dev->stats.rx_packets += received;
+ priv(dev)->rx_head = next_ptr;
+ /*
+ * If rx went off line, then that means that the buffer may be full. We
+ * have dropped at least one packet.
+ */
+ if (!(ether3_inw(REG_STATUS) & STAT_RXON)) {
+ dev->stats.rx_dropped++;
+ ether3_outw(next_ptr, REG_RECVPTR);
+ ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND);
+ }
+
+ return maxcnt;
+
+dropping:{
+ static unsigned long last_warned;
+
+ ether3_outw(next_ptr >> 8, REG_RECVEND);
+ /*
+ * Don't print this message too many times...
+ */
+ if (time_after(jiffies, last_warned + 10 * HZ)) {
+ last_warned = jiffies;
+ printk("%s: memory squeeze, dropping packet.\n", dev->name);
+ }
+ dev->stats.rx_dropped++;
+ goto done;
+ }
+}
+
+/*
+ * Update stats for the transmitted packet(s)
+ */
+static void ether3_tx(struct net_device *dev)
+{
+ unsigned int tx_tail = priv(dev)->tx_tail;
+ int max_work = 14;
+
+ do {
+ unsigned long status;
+
+ /*
+ * Read the packet header
+ */
+ ether3_setbuffer(dev, buffer_read, tx_tail * 0x600);
+ status = ether3_readlong(dev);
+
+ /*
+ * Check to see if this packet has been transmitted
+ */
+ if ((status & (TXSTAT_DONE | TXHDR_TRANSMIT)) !=
+ (TXSTAT_DONE | TXHDR_TRANSMIT))
+ break;
+
+ /*
+ * Update errors
+ */
+ if (!(status & (TXSTAT_BABBLED | TXSTAT_16COLLISIONS)))
+ dev->stats.tx_packets++;
+ else {
+ dev->stats.tx_errors++;
+ if (status & TXSTAT_16COLLISIONS)
+ dev->stats.collisions += 16;
+ if (status & TXSTAT_BABBLED)
+ dev->stats.tx_fifo_errors++;
+ }
+
+ tx_tail = (tx_tail + 1) & 15;
+ } while (--max_work);
+
+ if (priv(dev)->tx_tail != tx_tail) {
+ priv(dev)->tx_tail = tx_tail;
+ netif_wake_queue(dev);
+ }
+}
+
+static void __devinit ether3_banner(void)
+{
+ static unsigned version_printed = 0;
+
+ if (net_debug && version_printed++ == 0)
+ printk(KERN_INFO "%s", version);
+}
+
+static const struct net_device_ops ether3_netdev_ops = {
+ .ndo_open = ether3_open,
+ .ndo_stop = ether3_close,
+ .ndo_start_xmit = ether3_sendpacket,
+ .ndo_set_multicast_list = ether3_setmulticastlist,
+ .ndo_tx_timeout = ether3_timeout,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+static int __devinit
+ether3_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+ const struct ether3_data *data = id->data;
+ struct net_device *dev;
+ int bus_type, ret;
+
+ ether3_banner();
+
+ ret = ecard_request_resources(ec);
+ if (ret)
+ goto out;
+
+ dev = alloc_etherdev(sizeof(struct dev_priv));
+ if (!dev) {
+ ret = -ENOMEM;
+ goto release;
+ }
+
+ SET_NETDEV_DEV(dev, &ec->dev);
+
+ priv(dev)->base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
+ if (!priv(dev)->base) {
+ ret = -ENOMEM;
+ goto free;
+ }
+
+ ec->irqaddr = priv(dev)->base + data->base_offset;
+ ec->irqmask = 0xf0;
+
+ priv(dev)->seeq = priv(dev)->base + data->base_offset;
+ dev->irq = ec->irq;
+
+ ether3_addr(dev->dev_addr, ec);
+
+ init_timer(&priv(dev)->timer);
+
+ /* Reset card...
+ */
+ ether3_outb(0x80, REG_CONFIG2 + 4);
+ bus_type = BUS_UNKNOWN;
+ udelay(4);
+
+ /* Test using Receive Pointer (16-bit register) to find out
+ * how the ether3 is connected to the bus...
+ */
+ if (ether3_probe_bus_8(dev, 0x100) &&
+ ether3_probe_bus_8(dev, 0x201))
+ bus_type = BUS_8;
+
+ if (bus_type == BUS_UNKNOWN &&
+ ether3_probe_bus_16(dev, 0x101) &&
+ ether3_probe_bus_16(dev, 0x201))
+ bus_type = BUS_16;
+
+ switch (bus_type) {
+ case BUS_UNKNOWN:
+ printk(KERN_ERR "%s: unable to identify bus width\n", dev->name);
+ ret = -ENODEV;
+ goto free;
+
+ case BUS_8:
+ printk(KERN_ERR "%s: %s found, but is an unsupported "
+ "8-bit card\n", dev->name, data->name);
+ ret = -ENODEV;
+ goto free;
+
+ default:
+ break;
+ }
+
+ if (ether3_init_2(dev)) {
+ ret = -ENODEV;
+ goto free;
+ }
+
+ dev->netdev_ops = ðer3_netdev_ops;
+ dev->watchdog_timeo = 5 * HZ / 100;
+
+ ret = register_netdev(dev);
+ if (ret)
+ goto free;
+
+ printk("%s: %s in slot %d, %pM\n",
+ dev->name, data->name, ec->slot_no, dev->dev_addr);
+
+ ecard_set_drvdata(ec, dev);
+ return 0;
+
+ free:
+ free_netdev(dev);
+ release:
+ ecard_release_resources(ec);
+ out:
+ return ret;
+}
+
+static void __devexit ether3_remove(struct expansion_card *ec)
+{
+ struct net_device *dev = ecard_get_drvdata(ec);
+
+ ecard_set_drvdata(ec, NULL);
+
+ unregister_netdev(dev);
+ free_netdev(dev);
+ ecard_release_resources(ec);
+}
+
+static struct ether3_data ether3 = {
+ .name = "ether3",
+ .base_offset = 0,
+};
+
+static struct ether3_data etherb = {
+ .name = "etherb",
+ .base_offset = 0x800,
+};
+
+static const struct ecard_id ether3_ids[] = {
+ { MANU_ANT2, PROD_ANT_ETHER3, ðer3 },
+ { MANU_ANT, PROD_ANT_ETHER3, ðer3 },
+ { MANU_ANT, PROD_ANT_ETHERB, ðerb },
+ { 0xffff, 0xffff }
+};
+
+static struct ecard_driver ether3_driver = {
+ .probe = ether3_probe,
+ .remove = __devexit_p(ether3_remove),
+ .id_table = ether3_ids,
+ .drv = {
+ .name = "ether3",
+ },
+};
+
+static int __init ether3_init(void)
+{
+ return ecard_register_driver(ðer3_driver);
+}
+
+static void __exit ether3_exit(void)
+{
+ ecard_remove_driver(ðer3_driver);
+}
+
+module_init(ether3_init);
+module_exit(ether3_exit);
+
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * linux/drivers/acorn/net/ether3.h
+ *
+ * Copyright (C) 1995-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * network driver for Acorn/ANT Ether3 cards
+ */
+
+#ifndef _LINUX_ether3_H
+#define _LINUX_ether3_H
+
+/* use 0 for production, 1 for verification, >2 for debug. debug flags: */
+#define DEBUG_TX 2
+#define DEBUG_RX 4
+#define DEBUG_INT 8
+#define DEBUG_IC 16
+#ifndef NET_DEBUG
+#define NET_DEBUG 0
+#endif
+
+#define priv(dev) ((struct dev_priv *)netdev_priv(dev))
+
+/* Command register definitions & bits */
+#define REG_COMMAND (priv(dev)->seeq + 0x0000)
+#define CMD_ENINTDMA 0x0001
+#define CMD_ENINTRX 0x0002
+#define CMD_ENINTTX 0x0004
+#define CMD_ENINTBUFWIN 0x0008
+#define CMD_ACKINTDMA 0x0010
+#define CMD_ACKINTRX 0x0020
+#define CMD_ACKINTTX 0x0040
+#define CMD_ACKINTBUFWIN 0x0080
+#define CMD_DMAON 0x0100
+#define CMD_RXON 0x0200
+#define CMD_TXON 0x0400
+#define CMD_DMAOFF 0x0800
+#define CMD_RXOFF 0x1000
+#define CMD_TXOFF 0x2000
+#define CMD_FIFOREAD 0x4000
+#define CMD_FIFOWRITE 0x8000
+
+/* status register */
+#define REG_STATUS (priv(dev)->seeq + 0x0000)
+#define STAT_ENINTSTAT 0x0001
+#define STAT_ENINTRX 0x0002
+#define STAT_ENINTTX 0x0004
+#define STAT_ENINTBUFWIN 0x0008
+#define STAT_INTDMA 0x0010
+#define STAT_INTRX 0x0020
+#define STAT_INTTX 0x0040
+#define STAT_INTBUFWIN 0x0080
+#define STAT_DMAON 0x0100
+#define STAT_RXON 0x0200
+#define STAT_TXON 0x0400
+#define STAT_FIFOFULL 0x2000
+#define STAT_FIFOEMPTY 0x4000
+#define STAT_FIFODIR 0x8000
+
+/* configuration register 1 */
+#define REG_CONFIG1 (priv(dev)->seeq + 0x0040)
+#define CFG1_BUFSELSTAT0 0x0000
+#define CFG1_BUFSELSTAT1 0x0001
+#define CFG1_BUFSELSTAT2 0x0002
+#define CFG1_BUFSELSTAT3 0x0003
+#define CFG1_BUFSELSTAT4 0x0004
+#define CFG1_BUFSELSTAT5 0x0005
+#define CFG1_ADDRPROM 0x0006
+#define CFG1_TRANSEND 0x0007
+#define CFG1_LOCBUFMEM 0x0008
+#define CFG1_INTVECTOR 0x0009
+#define CFG1_RECVSPECONLY 0x0000
+#define CFG1_RECVSPECBROAD 0x4000
+#define CFG1_RECVSPECBRMULTI 0x8000
+#define CFG1_RECVPROMISC 0xC000
+
+/* The following aren't in 8004 */
+#define CFG1_DMABURSTCONT 0x0000
+#define CFG1_DMABURST800NS 0x0010
+#define CFG1_DMABURST1600NS 0x0020
+#define CFG1_DMABURST3200NS 0x0030
+#define CFG1_DMABURST1 0x0000
+#define CFG1_DMABURST4 0x0040
+#define CFG1_DMABURST8 0x0080
+#define CFG1_DMABURST16 0x00C0
+#define CFG1_RECVCOMPSTAT0 0x0100
+#define CFG1_RECVCOMPSTAT1 0x0200
+#define CFG1_RECVCOMPSTAT2 0x0400
+#define CFG1_RECVCOMPSTAT3 0x0800
+#define CFG1_RECVCOMPSTAT4 0x1000
+#define CFG1_RECVCOMPSTAT5 0x2000
+
+/* configuration register 2 */
+#define REG_CONFIG2 (priv(dev)->seeq + 0x0080)
+#define CFG2_BYTESWAP 0x0001
+#define CFG2_ERRENCRC 0x0008
+#define CFG2_ERRENDRIBBLE 0x0010
+#define CFG2_ERRSHORTFRAME 0x0020
+#define CFG2_SLOTSELECT 0x0040
+#define CFG2_PREAMSELECT 0x0080
+#define CFG2_ADDRLENGTH 0x0100
+#define CFG2_RECVCRC 0x0200
+#define CFG2_XMITNOCRC 0x0400
+#define CFG2_LOOPBACK 0x0800
+#define CFG2_CTRLO 0x1000
+#define CFG2_RESET 0x8000
+
+#define REG_RECVEND (priv(dev)->seeq + 0x00c0)
+
+#define REG_BUFWIN (priv(dev)->seeq + 0x0100)
+
+#define REG_RECVPTR (priv(dev)->seeq + 0x0140)
+
+#define REG_TRANSMITPTR (priv(dev)->seeq + 0x0180)
+
+#define REG_DMAADDR (priv(dev)->seeq + 0x01c0)
+
+/*
+ * Cards transmit/receive headers
+ */
+#define TX_NEXT (0xffff)
+#define TXHDR_ENBABBLEINT (1 << 16)
+#define TXHDR_ENCOLLISIONINT (1 << 17)
+#define TXHDR_EN16COLLISION (1 << 18)
+#define TXHDR_ENSUCCESS (1 << 19)
+#define TXHDR_DATAFOLLOWS (1 << 21)
+#define TXHDR_CHAINCONTINUE (1 << 22)
+#define TXHDR_TRANSMIT (1 << 23)
+#define TXSTAT_BABBLED (1 << 24)
+#define TXSTAT_COLLISION (1 << 25)
+#define TXSTAT_16COLLISIONS (1 << 26)
+#define TXSTAT_DONE (1 << 31)
+
+#define RX_NEXT (0xffff)
+#define RXHDR_CHAINCONTINUE (1 << 6)
+#define RXHDR_RECEIVE (1 << 7)
+#define RXSTAT_OVERSIZE (1 << 8)
+#define RXSTAT_CRCERROR (1 << 9)
+#define RXSTAT_DRIBBLEERROR (1 << 10)
+#define RXSTAT_SHORTPACKET (1 << 11)
+#define RXSTAT_DONE (1 << 15)
+
+
+#define TX_START 0x0000
+#define TX_END 0x6000
+#define RX_START 0x6000
+#define RX_LEN 0xA000
+#define RX_END 0x10000
+/* must be a power of 2 and greater than MAX_TX_BUFFERED */
+#define MAX_TXED 16
+#define MAX_TX_BUFFERED 10
+
+struct dev_priv {
+ void __iomem *base;
+ void __iomem *seeq;
+ struct {
+ unsigned int command;
+ unsigned int config1;
+ unsigned int config2;
+ } regs;
+ unsigned char tx_head; /* buffer nr to insert next packet */
+ unsigned char tx_tail; /* buffer nr of transmitting packet */
+ unsigned int rx_head; /* address to fetch next packet from */
+ struct timer_list timer;
+ int broken; /* 0 = ok, 1 = something went wrong */
+};
+
+struct ether3_data {
+ const char name[8];
+ unsigned long base_offset;
+};
+
+#endif
--- /dev/null
+/* seeq8005.c: A network driver for linux. */
+/*
+ Based on skeleton.c,
+ Written 1993-94 by Donald Becker.
+ See the skeleton.c file for further copyright information.
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+
+ The author may be reached as hamish@zot.apana.org.au
+
+ This file is a network device driver for the SEEQ 8005 chipset and
+ the Linux operating system.
+
+*/
+
+static const char version[] =
+ "seeq8005.c:v1.00 8/07/95 Hamish Coleman (hamish@zot.apana.org.au)\n";
+
+/*
+ Sources:
+ SEEQ 8005 databook
+
+ Version history:
+ 1.00 Public release. cosmetic changes (no warnings now)
+ 0.68 Turning per- packet,interrupt debug messages off - testing for release.
+ 0.67 timing problems/bad buffer reads seem to be fixed now
+ 0.63 *!@$ protocol=eth_type_trans -- now packets flow
+ 0.56 Send working
+ 0.48 Receive working
+*/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+#include <linux/jiffies.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include "seeq8005.h"
+
+/* First, a few definitions that the brave might change. */
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int seeq8005_portlist[] __initdata =
+ { 0x300, 0x320, 0x340, 0x360, 0};
+
+/* use 0 for production, 1 for verification, >2 for debug */
+#ifndef NET_DEBUG
+#define NET_DEBUG 1
+#endif
+static unsigned int net_debug = NET_DEBUG;
+
+/* Information that need to be kept for each board. */
+struct net_local {
+ unsigned short receive_ptr; /* What address in packet memory do we expect a recv_pkt_header? */
+ long open_time; /* Useless example local info. */
+};
+
+/* The station (ethernet) address prefix, used for IDing the board. */
+#define SA_ADDR0 0x00
+#define SA_ADDR1 0x80
+#define SA_ADDR2 0x4b
+
+/* Index to functions, as function prototypes. */
+
+static int seeq8005_probe1(struct net_device *dev, int ioaddr);
+static int seeq8005_open(struct net_device *dev);
+static void seeq8005_timeout(struct net_device *dev);
+static netdev_tx_t seeq8005_send_packet(struct sk_buff *skb,
+ struct net_device *dev);
+static irqreturn_t seeq8005_interrupt(int irq, void *dev_id);
+static void seeq8005_rx(struct net_device *dev);
+static int seeq8005_close(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+
+/* Example routines you must write ;->. */
+#define tx_done(dev) (inw(SEEQ_STATUS) & SEEQSTAT_TX_ON)
+static void hardware_send_packet(struct net_device *dev, char *buf, int length);
+extern void seeq8005_init(struct net_device *dev, int startp);
+static inline void wait_for_buffer(struct net_device *dev);
+
+
+/* Check for a network adaptor of this type, and return '0' iff one exists.
+ If dev->base_addr == 0, probe all likely locations.
+ If dev->base_addr == 1, always return failure.
+ */
+
+static int io = 0x320;
+static int irq = 10;
+
+struct net_device * __init seeq8005_probe(int unit)
+{
+ struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
+ unsigned *port;
+ int err = 0;
+
+ if (!dev)
+ return ERR_PTR(-ENODEV);
+
+ if (unit >= 0) {
+ sprintf(dev->name, "eth%d", unit);
+ netdev_boot_setup_check(dev);
+ io = dev->base_addr;
+ irq = dev->irq;
+ }
+
+ if (io > 0x1ff) { /* Check a single specified location. */
+ err = seeq8005_probe1(dev, io);
+ } else if (io != 0) { /* Don't probe at all. */
+ err = -ENXIO;
+ } else {
+ for (port = seeq8005_portlist; *port; port++) {
+ if (seeq8005_probe1(dev, *port) == 0)
+ break;
+ }
+ if (!*port)
+ err = -ENODEV;
+ }
+ if (err)
+ goto out;
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+ return dev;
+out1:
+ release_region(dev->base_addr, SEEQ8005_IO_EXTENT);
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+static const struct net_device_ops seeq8005_netdev_ops = {
+ .ndo_open = seeq8005_open,
+ .ndo_stop = seeq8005_close,
+ .ndo_start_xmit = seeq8005_send_packet,
+ .ndo_tx_timeout = seeq8005_timeout,
+ .ndo_set_multicast_list = set_multicast_list,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+/* This is the real probe routine. Linux has a history of friendly device
+ probes on the ISA bus. A good device probes avoids doing writes, and
+ verifies that the correct device exists and functions. */
+
+static int __init seeq8005_probe1(struct net_device *dev, int ioaddr)
+{
+ static unsigned version_printed;
+ int i,j;
+ unsigned char SA_prom[32];
+ int old_cfg1;
+ int old_cfg2;
+ int old_stat;
+ int old_dmaar;
+ int old_rear;
+ int retval;
+
+ if (!request_region(ioaddr, SEEQ8005_IO_EXTENT, "seeq8005"))
+ return -ENODEV;
+
+ if (net_debug>1)
+ printk("seeq8005: probing at 0x%x\n",ioaddr);
+
+ old_stat = inw(SEEQ_STATUS); /* read status register */
+ if (old_stat == 0xffff) {
+ retval = -ENODEV;
+ goto out; /* assume that 0xffff == no device */
+ }
+ if ( (old_stat & 0x1800) != 0x1800 ) { /* assume that unused bits are 1, as my manual says */
+ if (net_debug>1) {
+ printk("seeq8005: reserved stat bits != 0x1800\n");
+ printk(" == 0x%04x\n",old_stat);
+ }
+ retval = -ENODEV;
+ goto out;
+ }
+
+ old_rear = inw(SEEQ_REA);
+ if (old_rear == 0xffff) {
+ outw(0,SEEQ_REA);
+ if (inw(SEEQ_REA) == 0xffff) { /* assume that 0xffff == no device */
+ retval = -ENODEV;
+ goto out;
+ }
+ } else if ((old_rear & 0xff00) != 0xff00) { /* assume that unused bits are 1 */
+ if (net_debug>1) {
+ printk("seeq8005: unused rear bits != 0xff00\n");
+ printk(" == 0x%04x\n",old_rear);
+ }
+ retval = -ENODEV;
+ goto out;
+ }
+
+ old_cfg2 = inw(SEEQ_CFG2); /* read CFG2 register */
+ old_cfg1 = inw(SEEQ_CFG1);
+ old_dmaar = inw(SEEQ_DMAAR);
+
+ if (net_debug>4) {
+ printk("seeq8005: stat = 0x%04x\n",old_stat);
+ printk("seeq8005: cfg1 = 0x%04x\n",old_cfg1);
+ printk("seeq8005: cfg2 = 0x%04x\n",old_cfg2);
+ printk("seeq8005: raer = 0x%04x\n",old_rear);
+ printk("seeq8005: dmaar= 0x%04x\n",old_dmaar);
+ }
+
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); /* setup for reading PROM */
+ outw( 0, SEEQ_DMAAR); /* set starting PROM address */
+ outw( SEEQCFG1_BUFFER_PROM, SEEQ_CFG1); /* set buffer to look at PROM */
+
+
+ j=0;
+ for(i=0; i <32; i++) {
+ j+= SA_prom[i] = inw(SEEQ_BUFFER) & 0xff;
+ }
+
+#if 0
+ /* untested because I only have the one card */
+ if ( (j&0xff) != 0 ) { /* checksum appears to be 8bit = 0 */
+ if (net_debug>1) { /* check this before deciding that we have a card */
+ printk("seeq8005: prom sum error\n");
+ }
+ outw( old_stat, SEEQ_STATUS);
+ outw( old_dmaar, SEEQ_DMAAR);
+ outw( old_cfg1, SEEQ_CFG1);
+ retval = -ENODEV;
+ goto out;
+ }
+#endif
+
+ outw( SEEQCFG2_RESET, SEEQ_CFG2); /* reset the card */
+ udelay(5);
+ outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+
+ if (net_debug) {
+ printk("seeq8005: prom sum = 0x%08x\n",j);
+ for(j=0; j<32; j+=16) {
+ printk("seeq8005: prom %02x: ",j);
+ for(i=0;i<16;i++) {
+ printk("%02x ",SA_prom[j|i]);
+ }
+ printk(" ");
+ for(i=0;i<16;i++) {
+ if ((SA_prom[j|i]>31)&&(SA_prom[j|i]<127)) {
+ printk("%c", SA_prom[j|i]);
+ } else {
+ printk(" ");
+ }
+ }
+ printk("\n");
+ }
+ }
+
+#if 0
+ /*
+ * testing the packet buffer memory doesn't work yet
+ * but all other buffer accesses do
+ * - fixing is not a priority
+ */
+ if (net_debug>1) { /* test packet buffer memory */
+ printk("seeq8005: testing packet buffer ... ");
+ outw( SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1);
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ outw( 0 , SEEQ_DMAAR);
+ for(i=0;i<32768;i++) {
+ outw(0x5a5a, SEEQ_BUFFER);
+ }
+ j=jiffies+HZ;
+ while ( ((inw(SEEQ_STATUS) & SEEQSTAT_FIFO_EMPTY) != SEEQSTAT_FIFO_EMPTY) && time_before(jiffies, j) )
+ mb();
+ outw( 0 , SEEQ_DMAAR);
+ while ( ((inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, j+HZ))
+ mb();
+ if ( (inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT)
+ outw( SEEQCMD_WINDOW_INT_ACK | (inw(SEEQ_STATUS)& SEEQCMD_INT_MASK), SEEQ_CMD);
+ outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ j=0;
+ for(i=0;i<32768;i++) {
+ if (inw(SEEQ_BUFFER) != 0x5a5a)
+ j++;
+ }
+ if (j) {
+ printk("%i\n",j);
+ } else {
+ printk("ok.\n");
+ }
+ }
+#endif
+
+ if (net_debug && version_printed++ == 0)
+ printk(version);
+
+ printk("%s: %s found at %#3x, ", dev->name, "seeq8005", ioaddr);
+
+ /* Fill in the 'dev' fields. */
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+
+ /* Retrieve and print the ethernet address. */
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = SA_prom[i+6];
+ printk("%pM", dev->dev_addr);
+
+ if (dev->irq == 0xff)
+ ; /* Do nothing: a user-level program will set it. */
+ else if (dev->irq < 2) { /* "Auto-IRQ" */
+ unsigned long cookie = probe_irq_on();
+
+ outw( SEEQCMD_RX_INT_EN | SEEQCMD_SET_RX_ON | SEEQCMD_SET_RX_OFF, SEEQ_CMD );
+
+ dev->irq = probe_irq_off(cookie);
+
+ if (net_debug >= 2)
+ printk(" autoirq is %d\n", dev->irq);
+ } else if (dev->irq == 2)
+ /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
+ * or don't know which one to set.
+ */
+ dev->irq = 9;
+
+#if 0
+ {
+ int irqval = request_irq(dev->irq, seeq8005_interrupt, 0, "seeq8005", dev);
+ if (irqval) {
+ printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,
+ dev->irq, irqval);
+ retval = -EAGAIN;
+ goto out;
+ }
+ }
+#endif
+ dev->netdev_ops = &seeq8005_netdev_ops;
+ dev->watchdog_timeo = HZ/20;
+ dev->flags &= ~IFF_MULTICAST;
+
+ return 0;
+out:
+ release_region(ioaddr, SEEQ8005_IO_EXTENT);
+ return retval;
+}
+
+
+/* Open/initialize the board. This is called (in the current kernel)
+ sometime after booting when the 'ifconfig' program is run.
+
+ This routine should set everything up anew at each open, even
+ registers that "should" only need to be set once at boot, so that
+ there is non-reboot way to recover if something goes wrong.
+ */
+static int seeq8005_open(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+
+ {
+ int irqval = request_irq(dev->irq, seeq8005_interrupt, 0, "seeq8005", dev);
+ if (irqval) {
+ printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,
+ dev->irq, irqval);
+ return -EAGAIN;
+ }
+ }
+
+ /* Reset the hardware here. Don't forget to set the station address. */
+ seeq8005_init(dev, 1);
+
+ lp->open_time = jiffies;
+
+ netif_start_queue(dev);
+ return 0;
+}
+
+static void seeq8005_timeout(struct net_device *dev)
+{
+ int ioaddr = dev->base_addr;
+ printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
+ tx_done(dev) ? "IRQ conflict" : "network cable problem");
+ /* Try to restart the adaptor. */
+ seeq8005_init(dev, 1);
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+}
+
+static netdev_tx_t seeq8005_send_packet(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ short length = skb->len;
+ unsigned char *buf;
+
+ if (length < ETH_ZLEN) {
+ if (skb_padto(skb, ETH_ZLEN))
+ return NETDEV_TX_OK;
+ length = ETH_ZLEN;
+ }
+ buf = skb->data;
+
+ /* Block a timer-based transmit from overlapping */
+ netif_stop_queue(dev);
+
+ hardware_send_packet(dev, buf, length);
+ dev->stats.tx_bytes += length;
+ dev_kfree_skb (skb);
+ /* You might need to clean up and record Tx statistics here. */
+
+ return NETDEV_TX_OK;
+}
+
+/*
+ * wait_for_buffer
+ *
+ * This routine waits for the SEEQ chip to assert that the FIFO is ready
+ * by checking for a window interrupt, and then clearing it. This has to
+ * occur in the interrupt handler!
+ */
+inline void wait_for_buffer(struct net_device * dev)
+{
+ int ioaddr = dev->base_addr;
+ unsigned long tmp;
+ int status;
+
+ tmp = jiffies + HZ;
+ while ( ( ((status=inw(SEEQ_STATUS)) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, tmp))
+ cpu_relax();
+
+ if ( (status & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT)
+ outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+}
+
+/* The typical workload of the driver:
+ Handle the network interface interrupts. */
+static irqreturn_t seeq8005_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct net_local *lp;
+ int ioaddr, status, boguscount = 0;
+ int handled = 0;
+
+ ioaddr = dev->base_addr;
+ lp = netdev_priv(dev);
+
+ status = inw(SEEQ_STATUS);
+ do {
+ if (net_debug >2) {
+ printk("%s: int, status=0x%04x\n",dev->name,status);
+ }
+
+ if (status & SEEQSTAT_WINDOW_INT) {
+ handled = 1;
+ outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ if (net_debug) {
+ printk("%s: window int!\n",dev->name);
+ }
+ }
+ if (status & SEEQSTAT_TX_INT) {
+ handled = 1;
+ outw( SEEQCMD_TX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ dev->stats.tx_packets++;
+ netif_wake_queue(dev); /* Inform upper layers. */
+ }
+ if (status & SEEQSTAT_RX_INT) {
+ handled = 1;
+ /* Got a packet(s). */
+ seeq8005_rx(dev);
+ }
+ status = inw(SEEQ_STATUS);
+ } while ( (++boguscount < 10) && (status & SEEQSTAT_ANY_INT)) ;
+
+ if(net_debug>2) {
+ printk("%s: eoi\n",dev->name);
+ }
+ return IRQ_RETVAL(handled);
+}
+
+/* We have a good packet(s), get it/them out of the buffers. */
+static void seeq8005_rx(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int boguscount = 10;
+ int pkt_hdr;
+ int ioaddr = dev->base_addr;
+
+ do {
+ int next_packet;
+ int pkt_len;
+ int i;
+ int status;
+
+ status = inw(SEEQ_STATUS);
+ outw( lp->receive_ptr, SEEQ_DMAAR);
+ outw(SEEQCMD_FIFO_READ | SEEQCMD_RX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ wait_for_buffer(dev);
+ next_packet = ntohs(inw(SEEQ_BUFFER));
+ pkt_hdr = inw(SEEQ_BUFFER);
+
+ if (net_debug>2) {
+ printk("%s: 0x%04x recv next=0x%04x, hdr=0x%04x\n",dev->name,lp->receive_ptr,next_packet,pkt_hdr);
+ }
+
+ if ((next_packet == 0) || ((pkt_hdr & SEEQPKTH_CHAIN)==0)) { /* Read all the frames? */
+ return; /* Done for now */
+ }
+
+ if ((pkt_hdr & SEEQPKTS_DONE)==0)
+ break;
+
+ if (next_packet < lp->receive_ptr) {
+ pkt_len = (next_packet + 0x10000 - ((DEFAULT_TEA+1)<<8)) - lp->receive_ptr - 4;
+ } else {
+ pkt_len = next_packet - lp->receive_ptr - 4;
+ }
+
+ if (next_packet < ((DEFAULT_TEA+1)<<8)) { /* is the next_packet address sane? */
+ printk("%s: recv packet ring corrupt, resetting board\n",dev->name);
+ seeq8005_init(dev,1);
+ return;
+ }
+
+ lp->receive_ptr = next_packet;
+
+ if (net_debug>2) {
+ printk("%s: recv len=0x%04x\n",dev->name,pkt_len);
+ }
+
+ if (pkt_hdr & SEEQPKTS_ANY_ERROR) { /* There was an error. */
+ dev->stats.rx_errors++;
+ if (pkt_hdr & SEEQPKTS_SHORT) dev->stats.rx_frame_errors++;
+ if (pkt_hdr & SEEQPKTS_DRIB) dev->stats.rx_frame_errors++;
+ if (pkt_hdr & SEEQPKTS_OVERSIZE) dev->stats.rx_over_errors++;
+ if (pkt_hdr & SEEQPKTS_CRC_ERR) dev->stats.rx_crc_errors++;
+ /* skip over this packet */
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_DMA_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ outw( (lp->receive_ptr & 0xff00)>>8, SEEQ_REA);
+ } else {
+ /* Malloc up new buffer. */
+ struct sk_buff *skb;
+ unsigned char *buf;
+
+ skb = dev_alloc_skb(pkt_len);
+ if (skb == NULL) {
+ printk("%s: Memory squeeze, dropping packet.\n", dev->name);
+ dev->stats.rx_dropped++;
+ break;
+ }
+ skb_reserve(skb, 2); /* align data on 16 byte */
+ buf = skb_put(skb,pkt_len);
+
+ insw(SEEQ_BUFFER, buf, (pkt_len + 1) >> 1);
+
+ if (net_debug>2) {
+ char * p = buf;
+ printk("%s: recv ",dev->name);
+ for(i=0;i<14;i++) {
+ printk("%02x ",*(p++)&0xff);
+ }
+ printk("\n");
+ }
+
+ skb->protocol=eth_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += pkt_len;
+ }
+ } while ((--boguscount) && (pkt_hdr & SEEQPKTH_CHAIN));
+
+ /* If any worth-while packets have been received, netif_rx()
+ has done a mark_bh(NET_BH) for us and will work on them
+ when we get to the bottom-half routine. */
+}
+
+/* The inverse routine to net_open(). */
+static int seeq8005_close(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int ioaddr = dev->base_addr;
+
+ lp->open_time = 0;
+
+ netif_stop_queue(dev);
+
+ /* Flush the Tx and disable Rx here. */
+ outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+
+ free_irq(dev->irq, dev);
+
+ /* Update the statistics here. */
+
+ return 0;
+
+}
+
+/* Set or clear the multicast filter for this adaptor.
+ num_addrs == -1 Promiscuous mode, receive all packets
+ num_addrs == 0 Normal mode, clear multicast list
+ num_addrs > 0 Multicast mode, receive normal and MC packets, and do
+ best-effort filtering.
+ */
+static void set_multicast_list(struct net_device *dev)
+{
+/*
+ * I _could_ do up to 6 addresses here, but won't (yet?)
+ */
+
+#if 0
+ int ioaddr = dev->base_addr;
+/*
+ * hmm, not even sure if my matching works _anyway_ - seem to be receiving
+ * _everything_ . . .
+ */
+
+ if (num_addrs) { /* Enable promiscuous mode */
+ outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_ALL, SEEQ_CFG1);
+ dev->flags|=IFF_PROMISC;
+ } else { /* Disable promiscuous mode, use normal mode */
+ outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_BROAD, SEEQ_CFG1);
+ }
+#endif
+}
+
+void seeq8005_init(struct net_device *dev, int startp)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int ioaddr = dev->base_addr;
+ int i;
+
+ outw(SEEQCFG2_RESET, SEEQ_CFG2); /* reset device */
+ udelay(5);
+
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ outw( 0, SEEQ_DMAAR); /* load start address into both low and high byte */
+/* wait_for_buffer(dev); */ /* I think that you only need a wait for memory buffer */
+ outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1);
+
+ for(i=0;i<6;i++) { /* set Station address */
+ outb(dev->dev_addr[i], SEEQ_BUFFER);
+ udelay(2);
+ }
+
+ outw( SEEQCFG1_BUFFER_TEA, SEEQ_CFG1); /* set xmit end area pointer to 16K */
+ outb( DEFAULT_TEA, SEEQ_BUFFER); /* this gives us 16K of send buffer and 48K of recv buffer */
+
+ lp->receive_ptr = (DEFAULT_TEA+1)<<8; /* so we can find our packet_header */
+ outw( lp->receive_ptr, SEEQ_RPR); /* Receive Pointer Register is set to recv buffer memory */
+
+ outw( 0x00ff, SEEQ_REA); /* Receive Area End */
+
+ if (net_debug>4) {
+ printk("%s: SA0 = ",dev->name);
+
+ outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ outw( 0, SEEQ_DMAAR);
+ outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1);
+
+ for(i=0;i<6;i++) {
+ printk("%02x ",inb(SEEQ_BUFFER));
+ }
+ printk("\n");
+ }
+
+ outw( SEEQCFG1_MAC0_EN | SEEQCFG1_MATCH_BROAD | SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1);
+ outw( SEEQCFG2_AUTO_REA | SEEQCFG2_CTRLO, SEEQ_CFG2);
+ outw( SEEQCMD_SET_RX_ON | SEEQCMD_TX_INT_EN | SEEQCMD_RX_INT_EN, SEEQ_CMD);
+
+ if (net_debug>4) {
+ int old_cfg1;
+ old_cfg1 = inw(SEEQ_CFG1);
+ printk("%s: stat = 0x%04x\n",dev->name,inw(SEEQ_STATUS));
+ printk("%s: cfg1 = 0x%04x\n",dev->name,old_cfg1);
+ printk("%s: cfg2 = 0x%04x\n",dev->name,inw(SEEQ_CFG2));
+ printk("%s: raer = 0x%04x\n",dev->name,inw(SEEQ_REA));
+ printk("%s: dmaar= 0x%04x\n",dev->name,inw(SEEQ_DMAAR));
+
+ }
+}
+
+
+static void hardware_send_packet(struct net_device * dev, char *buf, int length)
+{
+ int ioaddr = dev->base_addr;
+ int status = inw(SEEQ_STATUS);
+ int transmit_ptr = 0;
+ unsigned long tmp;
+
+ if (net_debug>4) {
+ printk("%s: send 0x%04x\n",dev->name,length);
+ }
+
+ /* Set FIFO to writemode and set packet-buffer address */
+ outw( SEEQCMD_FIFO_WRITE | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ outw( transmit_ptr, SEEQ_DMAAR);
+
+ /* output SEEQ Packet header barfage */
+ outw( htons(length + 4), SEEQ_BUFFER);
+ outw( SEEQPKTH_XMIT | SEEQPKTH_DATA_FOLLOWS | SEEQPKTH_XMIT_INT_EN, SEEQ_BUFFER );
+
+ /* blat the buffer */
+ outsw( SEEQ_BUFFER, buf, (length +1) >> 1);
+ /* paranoia !! */
+ outw( 0, SEEQ_BUFFER);
+ outw( 0, SEEQ_BUFFER);
+
+ /* set address of start of transmit chain */
+ outw( transmit_ptr, SEEQ_TPR);
+
+ /* drain FIFO */
+ tmp = jiffies;
+ while ( (((status=inw(SEEQ_STATUS)) & SEEQSTAT_FIFO_EMPTY) == 0) && time_before(jiffies, tmp + HZ))
+ mb();
+
+ /* doit ! */
+ outw( SEEQCMD_WINDOW_INT_ACK | SEEQCMD_SET_TX_ON | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+
+}
+
+
+#ifdef MODULE
+
+static struct net_device *dev_seeq;
+MODULE_LICENSE("GPL");
+module_param(io, int, 0);
+module_param(irq, int, 0);
+MODULE_PARM_DESC(io, "SEEQ 8005 I/O base address");
+MODULE_PARM_DESC(irq, "SEEQ 8005 IRQ number");
+
+int __init init_module(void)
+{
+ dev_seeq = seeq8005_probe(-1);
+ if (IS_ERR(dev_seeq))
+ return PTR_ERR(dev_seeq);
+ return 0;
+}
+
+void __exit cleanup_module(void)
+{
+ unregister_netdev(dev_seeq);
+ release_region(dev_seeq->base_addr, SEEQ8005_IO_EXTENT);
+ free_netdev(dev_seeq);
+}
+
+#endif /* MODULE */
--- /dev/null
+/*
+ * defines, etc for the seeq8005
+ */
+
+/*
+ * This file is distributed under GPL.
+ *
+ * This style and layout of this file is also copied
+ * from many of the other linux network device drivers.
+ */
+
+/* The number of low I/O ports used by the ethercard. */
+#define SEEQ8005_IO_EXTENT 16
+
+#define SEEQ_B (ioaddr)
+
+#define SEEQ_CMD (SEEQ_B) /* Write only */
+#define SEEQ_STATUS (SEEQ_B) /* Read only */
+#define SEEQ_CFG1 (SEEQ_B + 2)
+#define SEEQ_CFG2 (SEEQ_B + 4)
+#define SEEQ_REA (SEEQ_B + 6) /* Receive End Area Register */
+#define SEEQ_RPR (SEEQ_B + 10) /* Receive Pointer Register */
+#define SEEQ_TPR (SEEQ_B + 12) /* Transmit Pointer Register */
+#define SEEQ_DMAAR (SEEQ_B + 14) /* DMA Address Register */
+#define SEEQ_BUFFER (SEEQ_B + 8) /* Buffer Window Register */
+
+#define DEFAULT_TEA (0x3f)
+
+#define SEEQCMD_DMA_INT_EN (0x0001) /* DMA Interrupt Enable */
+#define SEEQCMD_RX_INT_EN (0x0002) /* Receive Interrupt Enable */
+#define SEEQCMD_TX_INT_EN (0x0004) /* Transmit Interrupt Enable */
+#define SEEQCMD_WINDOW_INT_EN (0x0008) /* What the hell is this for?? */
+#define SEEQCMD_INT_MASK (0x000f)
+
+#define SEEQCMD_DMA_INT_ACK (0x0010) /* DMA ack */
+#define SEEQCMD_RX_INT_ACK (0x0020)
+#define SEEQCMD_TX_INT_ACK (0x0040)
+#define SEEQCMD_WINDOW_INT_ACK (0x0080)
+#define SEEQCMD_ACK_ALL (0x00f0)
+
+#define SEEQCMD_SET_DMA_ON (0x0100) /* Enables DMA Request logic */
+#define SEEQCMD_SET_RX_ON (0x0200) /* Enables Packet RX */
+#define SEEQCMD_SET_TX_ON (0x0400) /* Starts TX run */
+#define SEEQCMD_SET_DMA_OFF (0x0800)
+#define SEEQCMD_SET_RX_OFF (0x1000)
+#define SEEQCMD_SET_TX_OFF (0x2000)
+#define SEEQCMD_SET_ALL_OFF (0x3800) /* set all logic off */
+
+#define SEEQCMD_FIFO_READ (0x4000) /* Set FIFO to read mode (read from Buffer) */
+#define SEEQCMD_FIFO_WRITE (0x8000) /* Set FIFO to write mode */
+
+#define SEEQSTAT_DMA_INT_EN (0x0001) /* Status of interrupt enable */
+#define SEEQSTAT_RX_INT_EN (0x0002)
+#define SEEQSTAT_TX_INT_EN (0x0004)
+#define SEEQSTAT_WINDOW_INT_EN (0x0008)
+
+#define SEEQSTAT_DMA_INT (0x0010) /* Interrupt flagged */
+#define SEEQSTAT_RX_INT (0x0020)
+#define SEEQSTAT_TX_INT (0x0040)
+#define SEEQSTAT_WINDOW_INT (0x0080)
+#define SEEQSTAT_ANY_INT (0x00f0)
+
+#define SEEQSTAT_DMA_ON (0x0100) /* DMA logic on */
+#define SEEQSTAT_RX_ON (0x0200) /* Packet RX on */
+#define SEEQSTAT_TX_ON (0x0400) /* TX running */
+
+#define SEEQSTAT_FIFO_FULL (0x2000)
+#define SEEQSTAT_FIFO_EMPTY (0x4000)
+#define SEEQSTAT_FIFO_DIR (0x8000) /* 1=read, 0=write */
+
+#define SEEQCFG1_BUFFER_MASK (0x000f) /* define what maps into the BUFFER register */
+#define SEEQCFG1_BUFFER_MAC0 (0x0000) /* MAC station addresses 0-5 */
+#define SEEQCFG1_BUFFER_MAC1 (0x0001)
+#define SEEQCFG1_BUFFER_MAC2 (0x0002)
+#define SEEQCFG1_BUFFER_MAC3 (0x0003)
+#define SEEQCFG1_BUFFER_MAC4 (0x0004)
+#define SEEQCFG1_BUFFER_MAC5 (0x0005)
+#define SEEQCFG1_BUFFER_PROM (0x0006) /* The Address/CFG PROM */
+#define SEEQCFG1_BUFFER_TEA (0x0007) /* Transmit end area */
+#define SEEQCFG1_BUFFER_BUFFER (0x0008) /* Packet buffer memory */
+#define SEEQCFG1_BUFFER_INT_VEC (0x0009) /* Interrupt Vector */
+
+#define SEEQCFG1_DMA_INTVL_MASK (0x0030)
+#define SEEQCFG1_DMA_CONT (0x0000)
+#define SEEQCFG1_DMA_800ns (0x0010)
+#define SEEQCFG1_DMA_1600ns (0x0020)
+#define SEEQCFG1_DMA_3200ns (0x0030)
+
+#define SEEQCFG1_DMA_LEN_MASK (0x00c0)
+#define SEEQCFG1_DMA_LEN1 (0x0000)
+#define SEEQCFG1_DMA_LEN2 (0x0040)
+#define SEEQCFG1_DMA_LEN4 (0x0080)
+#define SEEQCFG1_DMA_LEN8 (0x00c0)
+
+#define SEEQCFG1_MAC_MASK (0x3f00) /* Dis/enable bits for MAC addresses */
+#define SEEQCFG1_MAC0_EN (0x0100)
+#define SEEQCFG1_MAC1_EN (0x0200)
+#define SEEQCFG1_MAC2_EN (0x0400)
+#define SEEQCFG1_MAC3_EN (0x0800)
+#define SEEQCFG1_MAC4_EN (0x1000)
+#define SEEQCFG1_MAC5_EN (0x2000)
+
+#define SEEQCFG1_MATCH_MASK (0xc000) /* Packet matching logic cfg bits */
+#define SEEQCFG1_MATCH_SPECIFIC (0x0000) /* only matching MAC addresses */
+#define SEEQCFG1_MATCH_BROAD (0x4000) /* matching and broadcast addresses */
+#define SEEQCFG1_MATCH_MULTI (0x8000) /* matching, broadcast and multicast */
+#define SEEQCFG1_MATCH_ALL (0xc000) /* Promiscuous mode */
+
+#define SEEQCFG1_DEFAULT (SEEQCFG1_BUFFER_BUFFER | SEEQCFG1_MAC0_EN | SEEQCFG1_MATCH_BROAD)
+
+#define SEEQCFG2_BYTE_SWAP (0x0001) /* 0=Intel byte-order */
+#define SEEQCFG2_AUTO_REA (0x0002) /* if set, Receive End Area will be updated when reading from Buffer */
+
+#define SEEQCFG2_CRC_ERR_EN (0x0008) /* enables receiving of packets with CRC errors */
+#define SEEQCFG2_DRIBBLE_EN (0x0010) /* enables receiving of non-aligned packets */
+#define SEEQCFG2_SHORT_EN (0x0020) /* enables receiving of short packets */
+
+#define SEEQCFG2_SLOTSEL (0x0040) /* 0= standard IEEE802.3, 1= smaller,faster, non-standard */
+#define SEEQCFG2_NO_PREAM (0x0080) /* 1= user supplies Xmit preamble bytes */
+#define SEEQCFG2_ADDR_LEN (0x0100) /* 1= 2byte addresses */
+#define SEEQCFG2_REC_CRC (0x0200) /* 0= received packets will have CRC stripped from them */
+#define SEEQCFG2_XMIT_NO_CRC (0x0400) /* don't xmit CRC with each packet (user supplies it) */
+#define SEEQCFG2_LOOPBACK (0x0800)
+#define SEEQCFG2_CTRLO (0x1000)
+#define SEEQCFG2_RESET (0x8000) /* software Hard-reset bit */
+
+struct seeq_pkt_hdr {
+ unsigned short next; /* address of next packet header */
+ unsigned char babble_int:1, /* enable int on >1514 byte packet */
+ coll_int:1, /* enable int on collision */
+ coll_16_int:1, /* enable int on >15 collision */
+ xmit_int:1, /* enable int on success (or xmit with <15 collision) */
+ unused:1,
+ data_follows:1, /* if not set, process this as a header and pointer only */
+ chain_cont:1, /* if set, more headers in chain only cmd bit valid in recv header */
+ xmit_recv:1; /* if set, a xmit packet, else a receive packet.*/
+ unsigned char status;
+};
+
+#define SEEQPKTH_BAB_INT_EN (0x01) /* xmit only */
+#define SEEQPKTH_COL_INT_EN (0x02) /* xmit only */
+#define SEEQPKTH_COL16_INT_EN (0x04) /* xmit only */
+#define SEEQPKTH_XMIT_INT_EN (0x08) /* xmit only */
+#define SEEQPKTH_DATA_FOLLOWS (0x20) /* supposedly in xmit only */
+#define SEEQPKTH_CHAIN (0x40) /* more headers follow */
+#define SEEQPKTH_XMIT (0x80)
+
+#define SEEQPKTS_BABBLE (0x0100) /* xmit only */
+#define SEEQPKTS_OVERSIZE (0x0100) /* recv only */
+#define SEEQPKTS_COLLISION (0x0200) /* xmit only */
+#define SEEQPKTS_CRC_ERR (0x0200) /* recv only */
+#define SEEQPKTS_COLL16 (0x0400) /* xmit only */
+#define SEEQPKTS_DRIB (0x0400) /* recv only */
+#define SEEQPKTS_SHORT (0x0800) /* recv only */
+#define SEEQPKTS_DONE (0x8000)
+#define SEEQPKTS_ANY_ERROR (0x0f00)
--- /dev/null
+/*
+ * sgiseeq.c: Seeq8003 ethernet driver for SGI machines.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ */
+
+#undef DEBUG
+
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include <asm/sgi/hpc3.h>
+#include <asm/sgi/ip22.h>
+#include <asm/sgi/seeq.h>
+
+#include "sgiseeq.h"
+
+static char *sgiseeqstr = "SGI Seeq8003";
+
+/*
+ * If you want speed, you do something silly, it always has worked for me. So,
+ * with that in mind, I've decided to make this driver look completely like a
+ * stupid Lance from a driver architecture perspective. Only difference is that
+ * here our "ring buffer" looks and acts like a real Lance one does but is
+ * laid out like how the HPC DMA and the Seeq want it to. You'd be surprised
+ * how a stupid idea like this can pay off in performance, not to mention
+ * making this driver 2,000 times easier to write. ;-)
+ */
+
+/* Tune these if we tend to run out often etc. */
+#define SEEQ_RX_BUFFERS 16
+#define SEEQ_TX_BUFFERS 16
+
+#define PKT_BUF_SZ 1584
+
+#define NEXT_RX(i) (((i) + 1) & (SEEQ_RX_BUFFERS - 1))
+#define NEXT_TX(i) (((i) + 1) & (SEEQ_TX_BUFFERS - 1))
+#define PREV_RX(i) (((i) - 1) & (SEEQ_RX_BUFFERS - 1))
+#define PREV_TX(i) (((i) - 1) & (SEEQ_TX_BUFFERS - 1))
+
+#define TX_BUFFS_AVAIL(sp) ((sp->tx_old <= sp->tx_new) ? \
+ sp->tx_old + (SEEQ_TX_BUFFERS - 1) - sp->tx_new : \
+ sp->tx_old - sp->tx_new - 1)
+
+#define VIRT_TO_DMA(sp, v) ((sp)->srings_dma + \
+ (dma_addr_t)((unsigned long)(v) - \
+ (unsigned long)((sp)->rx_desc)))
+
+/* Copy frames shorter than rx_copybreak, otherwise pass on up in
+ * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
+ */
+static int rx_copybreak = 100;
+
+#define PAD_SIZE (128 - sizeof(struct hpc_dma_desc) - sizeof(void *))
+
+struct sgiseeq_rx_desc {
+ volatile struct hpc_dma_desc rdma;
+ u8 padding[PAD_SIZE];
+ struct sk_buff *skb;
+};
+
+struct sgiseeq_tx_desc {
+ volatile struct hpc_dma_desc tdma;
+ u8 padding[PAD_SIZE];
+ struct sk_buff *skb;
+};
+
+/*
+ * Warning: This structure is laid out in a certain way because HPC dma
+ * descriptors must be 8-byte aligned. So don't touch this without
+ * some care.
+ */
+struct sgiseeq_init_block { /* Note the name ;-) */
+ struct sgiseeq_rx_desc rxvector[SEEQ_RX_BUFFERS];
+ struct sgiseeq_tx_desc txvector[SEEQ_TX_BUFFERS];
+};
+
+struct sgiseeq_private {
+ struct sgiseeq_init_block *srings;
+ dma_addr_t srings_dma;
+
+ /* Ptrs to the descriptors in uncached space. */
+ struct sgiseeq_rx_desc *rx_desc;
+ struct sgiseeq_tx_desc *tx_desc;
+
+ char *name;
+ struct hpc3_ethregs *hregs;
+ struct sgiseeq_regs *sregs;
+
+ /* Ring entry counters. */
+ unsigned int rx_new, tx_new;
+ unsigned int rx_old, tx_old;
+
+ int is_edlc;
+ unsigned char control;
+ unsigned char mode;
+
+ spinlock_t tx_lock;
+};
+
+static inline void dma_sync_desc_cpu(struct net_device *dev, void *addr)
+{
+ dma_cache_sync(dev->dev.parent, addr, sizeof(struct sgiseeq_rx_desc),
+ DMA_FROM_DEVICE);
+}
+
+static inline void dma_sync_desc_dev(struct net_device *dev, void *addr)
+{
+ dma_cache_sync(dev->dev.parent, addr, sizeof(struct sgiseeq_rx_desc),
+ DMA_TO_DEVICE);
+}
+
+static inline void hpc3_eth_reset(struct hpc3_ethregs *hregs)
+{
+ hregs->reset = HPC3_ERST_CRESET | HPC3_ERST_CLRIRQ;
+ udelay(20);
+ hregs->reset = 0;
+}
+
+static inline void reset_hpc3_and_seeq(struct hpc3_ethregs *hregs,
+ struct sgiseeq_regs *sregs)
+{
+ hregs->rx_ctrl = hregs->tx_ctrl = 0;
+ hpc3_eth_reset(hregs);
+}
+
+#define RSTAT_GO_BITS (SEEQ_RCMD_IGOOD | SEEQ_RCMD_IEOF | SEEQ_RCMD_ISHORT | \
+ SEEQ_RCMD_IDRIB | SEEQ_RCMD_ICRC)
+
+static inline void seeq_go(struct sgiseeq_private *sp,
+ struct hpc3_ethregs *hregs,
+ struct sgiseeq_regs *sregs)
+{
+ sregs->rstat = sp->mode | RSTAT_GO_BITS;
+ hregs->rx_ctrl = HPC3_ERXCTRL_ACTIVE;
+}
+
+static inline void __sgiseeq_set_mac_address(struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ struct sgiseeq_regs *sregs = sp->sregs;
+ int i;
+
+ sregs->tstat = SEEQ_TCMD_RB0;
+ for (i = 0; i < 6; i++)
+ sregs->rw.eth_addr[i] = dev->dev_addr[i];
+}
+
+static int sgiseeq_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ struct sockaddr *sa = addr;
+
+ memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
+
+ spin_lock_irq(&sp->tx_lock);
+ __sgiseeq_set_mac_address(dev);
+ spin_unlock_irq(&sp->tx_lock);
+
+ return 0;
+}
+
+#define TCNTINFO_INIT (HPCDMA_EOX | HPCDMA_ETXD)
+#define RCNTCFG_INIT (HPCDMA_OWN | HPCDMA_EORP | HPCDMA_XIE)
+#define RCNTINFO_INIT (RCNTCFG_INIT | (PKT_BUF_SZ & HPCDMA_BCNT))
+
+static int seeq_init_ring(struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ int i;
+
+ netif_stop_queue(dev);
+ sp->rx_new = sp->tx_new = 0;
+ sp->rx_old = sp->tx_old = 0;
+
+ __sgiseeq_set_mac_address(dev);
+
+ /* Setup tx ring. */
+ for(i = 0; i < SEEQ_TX_BUFFERS; i++) {
+ sp->tx_desc[i].tdma.cntinfo = TCNTINFO_INIT;
+ dma_sync_desc_dev(dev, &sp->tx_desc[i]);
+ }
+
+ /* And now the rx ring. */
+ for (i = 0; i < SEEQ_RX_BUFFERS; i++) {
+ if (!sp->rx_desc[i].skb) {
+ dma_addr_t dma_addr;
+ struct sk_buff *skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
+
+ if (skb == NULL)
+ return -ENOMEM;
+ skb_reserve(skb, 2);
+ dma_addr = dma_map_single(dev->dev.parent,
+ skb->data - 2,
+ PKT_BUF_SZ, DMA_FROM_DEVICE);
+ sp->rx_desc[i].skb = skb;
+ sp->rx_desc[i].rdma.pbuf = dma_addr;
+ }
+ sp->rx_desc[i].rdma.cntinfo = RCNTINFO_INIT;
+ dma_sync_desc_dev(dev, &sp->rx_desc[i]);
+ }
+ sp->rx_desc[i - 1].rdma.cntinfo |= HPCDMA_EOR;
+ dma_sync_desc_dev(dev, &sp->rx_desc[i - 1]);
+ return 0;
+}
+
+static void seeq_purge_ring(struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ int i;
+
+ /* clear tx ring. */
+ for (i = 0; i < SEEQ_TX_BUFFERS; i++) {
+ if (sp->tx_desc[i].skb) {
+ dev_kfree_skb(sp->tx_desc[i].skb);
+ sp->tx_desc[i].skb = NULL;
+ }
+ }
+
+ /* And now the rx ring. */
+ for (i = 0; i < SEEQ_RX_BUFFERS; i++) {
+ if (sp->rx_desc[i].skb) {
+ dev_kfree_skb(sp->rx_desc[i].skb);
+ sp->rx_desc[i].skb = NULL;
+ }
+ }
+}
+
+#ifdef DEBUG
+static struct sgiseeq_private *gpriv;
+static struct net_device *gdev;
+
+static void sgiseeq_dump_rings(void)
+{
+ static int once;
+ struct sgiseeq_rx_desc *r = gpriv->rx_desc;
+ struct sgiseeq_tx_desc *t = gpriv->tx_desc;
+ struct hpc3_ethregs *hregs = gpriv->hregs;
+ int i;
+
+ if (once)
+ return;
+ once++;
+ printk("RING DUMP:\n");
+ for (i = 0; i < SEEQ_RX_BUFFERS; i++) {
+ printk("RX [%d]: @(%p) [%08x,%08x,%08x] ",
+ i, (&r[i]), r[i].rdma.pbuf, r[i].rdma.cntinfo,
+ r[i].rdma.pnext);
+ i += 1;
+ printk("-- [%d]: @(%p) [%08x,%08x,%08x]\n",
+ i, (&r[i]), r[i].rdma.pbuf, r[i].rdma.cntinfo,
+ r[i].rdma.pnext);
+ }
+ for (i = 0; i < SEEQ_TX_BUFFERS; i++) {
+ printk("TX [%d]: @(%p) [%08x,%08x,%08x] ",
+ i, (&t[i]), t[i].tdma.pbuf, t[i].tdma.cntinfo,
+ t[i].tdma.pnext);
+ i += 1;
+ printk("-- [%d]: @(%p) [%08x,%08x,%08x]\n",
+ i, (&t[i]), t[i].tdma.pbuf, t[i].tdma.cntinfo,
+ t[i].tdma.pnext);
+ }
+ printk("INFO: [rx_new = %d rx_old=%d] [tx_new = %d tx_old = %d]\n",
+ gpriv->rx_new, gpriv->rx_old, gpriv->tx_new, gpriv->tx_old);
+ printk("RREGS: rx_cbptr[%08x] rx_ndptr[%08x] rx_ctrl[%08x]\n",
+ hregs->rx_cbptr, hregs->rx_ndptr, hregs->rx_ctrl);
+ printk("TREGS: tx_cbptr[%08x] tx_ndptr[%08x] tx_ctrl[%08x]\n",
+ hregs->tx_cbptr, hregs->tx_ndptr, hregs->tx_ctrl);
+}
+#endif
+
+#define TSTAT_INIT_SEEQ (SEEQ_TCMD_IPT|SEEQ_TCMD_I16|SEEQ_TCMD_IC|SEEQ_TCMD_IUF)
+#define TSTAT_INIT_EDLC ((TSTAT_INIT_SEEQ) | SEEQ_TCMD_RB2)
+
+static int init_seeq(struct net_device *dev, struct sgiseeq_private *sp,
+ struct sgiseeq_regs *sregs)
+{
+ struct hpc3_ethregs *hregs = sp->hregs;
+ int err;
+
+ reset_hpc3_and_seeq(hregs, sregs);
+ err = seeq_init_ring(dev);
+ if (err)
+ return err;
+
+ /* Setup to field the proper interrupt types. */
+ if (sp->is_edlc) {
+ sregs->tstat = TSTAT_INIT_EDLC;
+ sregs->rw.wregs.control = sp->control;
+ sregs->rw.wregs.frame_gap = 0;
+ } else {
+ sregs->tstat = TSTAT_INIT_SEEQ;
+ }
+
+ hregs->rx_ndptr = VIRT_TO_DMA(sp, sp->rx_desc);
+ hregs->tx_ndptr = VIRT_TO_DMA(sp, sp->tx_desc);
+
+ seeq_go(sp, hregs, sregs);
+ return 0;
+}
+
+static void record_rx_errors(struct net_device *dev, unsigned char status)
+{
+ if (status & SEEQ_RSTAT_OVERF ||
+ status & SEEQ_RSTAT_SFRAME)
+ dev->stats.rx_over_errors++;
+ if (status & SEEQ_RSTAT_CERROR)
+ dev->stats.rx_crc_errors++;
+ if (status & SEEQ_RSTAT_DERROR)
+ dev->stats.rx_frame_errors++;
+ if (status & SEEQ_RSTAT_REOF)
+ dev->stats.rx_errors++;
+}
+
+static inline void rx_maybe_restart(struct sgiseeq_private *sp,
+ struct hpc3_ethregs *hregs,
+ struct sgiseeq_regs *sregs)
+{
+ if (!(hregs->rx_ctrl & HPC3_ERXCTRL_ACTIVE)) {
+ hregs->rx_ndptr = VIRT_TO_DMA(sp, sp->rx_desc + sp->rx_new);
+ seeq_go(sp, hregs, sregs);
+ }
+}
+
+static inline void sgiseeq_rx(struct net_device *dev, struct sgiseeq_private *sp,
+ struct hpc3_ethregs *hregs,
+ struct sgiseeq_regs *sregs)
+{
+ struct sgiseeq_rx_desc *rd;
+ struct sk_buff *skb = NULL;
+ struct sk_buff *newskb;
+ unsigned char pkt_status;
+ int len = 0;
+ unsigned int orig_end = PREV_RX(sp->rx_new);
+
+ /* Service every received packet. */
+ rd = &sp->rx_desc[sp->rx_new];
+ dma_sync_desc_cpu(dev, rd);
+ while (!(rd->rdma.cntinfo & HPCDMA_OWN)) {
+ len = PKT_BUF_SZ - (rd->rdma.cntinfo & HPCDMA_BCNT) - 3;
+ dma_unmap_single(dev->dev.parent, rd->rdma.pbuf,
+ PKT_BUF_SZ, DMA_FROM_DEVICE);
+ pkt_status = rd->skb->data[len];
+ if (pkt_status & SEEQ_RSTAT_FIG) {
+ /* Packet is OK. */
+ /* We don't want to receive our own packets */
+ if (memcmp(rd->skb->data + 6, dev->dev_addr, ETH_ALEN)) {
+ if (len > rx_copybreak) {
+ skb = rd->skb;
+ newskb = netdev_alloc_skb(dev, PKT_BUF_SZ);
+ if (!newskb) {
+ newskb = skb;
+ skb = NULL;
+ goto memory_squeeze;
+ }
+ skb_reserve(newskb, 2);
+ } else {
+ skb = netdev_alloc_skb_ip_align(dev, len);
+ if (skb)
+ skb_copy_to_linear_data(skb, rd->skb->data, len);
+
+ newskb = rd->skb;
+ }
+memory_squeeze:
+ if (skb) {
+ skb_put(skb, len);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += len;
+ } else {
+ printk(KERN_NOTICE "%s: Memory squeeze, deferring packet.\n",
+ dev->name);
+ dev->stats.rx_dropped++;
+ }
+ } else {
+ /* Silently drop my own packets */
+ newskb = rd->skb;
+ }
+ } else {
+ record_rx_errors(dev, pkt_status);
+ newskb = rd->skb;
+ }
+ rd->skb = newskb;
+ rd->rdma.pbuf = dma_map_single(dev->dev.parent,
+ newskb->data - 2,
+ PKT_BUF_SZ, DMA_FROM_DEVICE);
+
+ /* Return the entry to the ring pool. */
+ rd->rdma.cntinfo = RCNTINFO_INIT;
+ sp->rx_new = NEXT_RX(sp->rx_new);
+ dma_sync_desc_dev(dev, rd);
+ rd = &sp->rx_desc[sp->rx_new];
+ dma_sync_desc_cpu(dev, rd);
+ }
+ dma_sync_desc_cpu(dev, &sp->rx_desc[orig_end]);
+ sp->rx_desc[orig_end].rdma.cntinfo &= ~(HPCDMA_EOR);
+ dma_sync_desc_dev(dev, &sp->rx_desc[orig_end]);
+ dma_sync_desc_cpu(dev, &sp->rx_desc[PREV_RX(sp->rx_new)]);
+ sp->rx_desc[PREV_RX(sp->rx_new)].rdma.cntinfo |= HPCDMA_EOR;
+ dma_sync_desc_dev(dev, &sp->rx_desc[PREV_RX(sp->rx_new)]);
+ rx_maybe_restart(sp, hregs, sregs);
+}
+
+static inline void tx_maybe_reset_collisions(struct sgiseeq_private *sp,
+ struct sgiseeq_regs *sregs)
+{
+ if (sp->is_edlc) {
+ sregs->rw.wregs.control = sp->control & ~(SEEQ_CTRL_XCNT);
+ sregs->rw.wregs.control = sp->control;
+ }
+}
+
+static inline void kick_tx(struct net_device *dev,
+ struct sgiseeq_private *sp,
+ struct hpc3_ethregs *hregs)
+{
+ struct sgiseeq_tx_desc *td;
+ int i = sp->tx_old;
+
+ /* If the HPC aint doin nothin, and there are more packets
+ * with ETXD cleared and XIU set we must make very certain
+ * that we restart the HPC else we risk locking up the
+ * adapter. The following code is only safe iff the HPCDMA
+ * is not active!
+ */
+ td = &sp->tx_desc[i];
+ dma_sync_desc_cpu(dev, td);
+ while ((td->tdma.cntinfo & (HPCDMA_XIU | HPCDMA_ETXD)) ==
+ (HPCDMA_XIU | HPCDMA_ETXD)) {
+ i = NEXT_TX(i);
+ td = &sp->tx_desc[i];
+ dma_sync_desc_cpu(dev, td);
+ }
+ if (td->tdma.cntinfo & HPCDMA_XIU) {
+ hregs->tx_ndptr = VIRT_TO_DMA(sp, td);
+ hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE;
+ }
+}
+
+static inline void sgiseeq_tx(struct net_device *dev, struct sgiseeq_private *sp,
+ struct hpc3_ethregs *hregs,
+ struct sgiseeq_regs *sregs)
+{
+ struct sgiseeq_tx_desc *td;
+ unsigned long status = hregs->tx_ctrl;
+ int j;
+
+ tx_maybe_reset_collisions(sp, sregs);
+
+ if (!(status & (HPC3_ETXCTRL_ACTIVE | SEEQ_TSTAT_PTRANS))) {
+ /* Oops, HPC detected some sort of error. */
+ if (status & SEEQ_TSTAT_R16)
+ dev->stats.tx_aborted_errors++;
+ if (status & SEEQ_TSTAT_UFLOW)
+ dev->stats.tx_fifo_errors++;
+ if (status & SEEQ_TSTAT_LCLS)
+ dev->stats.collisions++;
+ }
+
+ /* Ack 'em... */
+ for (j = sp->tx_old; j != sp->tx_new; j = NEXT_TX(j)) {
+ td = &sp->tx_desc[j];
+
+ dma_sync_desc_cpu(dev, td);
+ if (!(td->tdma.cntinfo & (HPCDMA_XIU)))
+ break;
+ if (!(td->tdma.cntinfo & (HPCDMA_ETXD))) {
+ if (!(status & HPC3_ETXCTRL_ACTIVE)) {
+ hregs->tx_ndptr = VIRT_TO_DMA(sp, td);
+ hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE;
+ }
+ break;
+ }
+ dev->stats.tx_packets++;
+ sp->tx_old = NEXT_TX(sp->tx_old);
+ td->tdma.cntinfo &= ~(HPCDMA_XIU | HPCDMA_XIE);
+ td->tdma.cntinfo |= HPCDMA_EOX;
+ if (td->skb) {
+ dev_kfree_skb_any(td->skb);
+ td->skb = NULL;
+ }
+ dma_sync_desc_dev(dev, td);
+ }
+}
+
+static irqreturn_t sgiseeq_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ struct hpc3_ethregs *hregs = sp->hregs;
+ struct sgiseeq_regs *sregs = sp->sregs;
+
+ spin_lock(&sp->tx_lock);
+
+ /* Ack the IRQ and set software state. */
+ hregs->reset = HPC3_ERST_CLRIRQ;
+
+ /* Always check for received packets. */
+ sgiseeq_rx(dev, sp, hregs, sregs);
+
+ /* Only check for tx acks if we have something queued. */
+ if (sp->tx_old != sp->tx_new)
+ sgiseeq_tx(dev, sp, hregs, sregs);
+
+ if ((TX_BUFFS_AVAIL(sp) > 0) && netif_queue_stopped(dev)) {
+ netif_wake_queue(dev);
+ }
+ spin_unlock(&sp->tx_lock);
+
+ return IRQ_HANDLED;
+}
+
+static int sgiseeq_open(struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ struct sgiseeq_regs *sregs = sp->sregs;
+ unsigned int irq = dev->irq;
+ int err;
+
+ if (request_irq(irq, sgiseeq_interrupt, 0, sgiseeqstr, dev)) {
+ printk(KERN_ERR "Seeq8003: Can't get irq %d\n", dev->irq);
+ return -EAGAIN;
+ }
+
+ err = init_seeq(dev, sp, sregs);
+ if (err)
+ goto out_free_irq;
+
+ netif_start_queue(dev);
+
+ return 0;
+
+out_free_irq:
+ free_irq(irq, dev);
+
+ return err;
+}
+
+static int sgiseeq_close(struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ struct sgiseeq_regs *sregs = sp->sregs;
+ unsigned int irq = dev->irq;
+
+ netif_stop_queue(dev);
+
+ /* Shutdown the Seeq. */
+ reset_hpc3_and_seeq(sp->hregs, sregs);
+ free_irq(irq, dev);
+ seeq_purge_ring(dev);
+
+ return 0;
+}
+
+static inline int sgiseeq_reset(struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ struct sgiseeq_regs *sregs = sp->sregs;
+ int err;
+
+ err = init_seeq(dev, sp, sregs);
+ if (err)
+ return err;
+
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+
+ return 0;
+}
+
+static int sgiseeq_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ struct hpc3_ethregs *hregs = sp->hregs;
+ unsigned long flags;
+ struct sgiseeq_tx_desc *td;
+ int len, entry;
+
+ spin_lock_irqsave(&sp->tx_lock, flags);
+
+ /* Setup... */
+ len = skb->len;
+ if (len < ETH_ZLEN) {
+ if (skb_padto(skb, ETH_ZLEN)) {
+ spin_unlock_irqrestore(&sp->tx_lock, flags);
+ return NETDEV_TX_OK;
+ }
+ len = ETH_ZLEN;
+ }
+
+ dev->stats.tx_bytes += len;
+ entry = sp->tx_new;
+ td = &sp->tx_desc[entry];
+ dma_sync_desc_cpu(dev, td);
+
+ /* Create entry. There are so many races with adding a new
+ * descriptor to the chain:
+ * 1) Assume that the HPC is off processing a DMA chain while
+ * we are changing all of the following.
+ * 2) Do no allow the HPC to look at a new descriptor until
+ * we have completely set up it's state. This means, do
+ * not clear HPCDMA_EOX in the current last descritptor
+ * until the one we are adding looks consistent and could
+ * be processes right now.
+ * 3) The tx interrupt code must notice when we've added a new
+ * entry and the HPC got to the end of the chain before we
+ * added this new entry and restarted it.
+ */
+ td->skb = skb;
+ td->tdma.pbuf = dma_map_single(dev->dev.parent, skb->data,
+ len, DMA_TO_DEVICE);
+ td->tdma.cntinfo = (len & HPCDMA_BCNT) |
+ HPCDMA_XIU | HPCDMA_EOXP | HPCDMA_XIE | HPCDMA_EOX;
+ dma_sync_desc_dev(dev, td);
+ if (sp->tx_old != sp->tx_new) {
+ struct sgiseeq_tx_desc *backend;
+
+ backend = &sp->tx_desc[PREV_TX(sp->tx_new)];
+ dma_sync_desc_cpu(dev, backend);
+ backend->tdma.cntinfo &= ~HPCDMA_EOX;
+ dma_sync_desc_dev(dev, backend);
+ }
+ sp->tx_new = NEXT_TX(sp->tx_new); /* Advance. */
+
+ /* Maybe kick the HPC back into motion. */
+ if (!(hregs->tx_ctrl & HPC3_ETXCTRL_ACTIVE))
+ kick_tx(dev, sp, hregs);
+
+ if (!TX_BUFFS_AVAIL(sp))
+ netif_stop_queue(dev);
+ spin_unlock_irqrestore(&sp->tx_lock, flags);
+
+ return NETDEV_TX_OK;
+}
+
+static void timeout(struct net_device *dev)
+{
+ printk(KERN_NOTICE "%s: transmit timed out, resetting\n", dev->name);
+ sgiseeq_reset(dev);
+
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+}
+
+static void sgiseeq_set_multicast(struct net_device *dev)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ unsigned char oldmode = sp->mode;
+
+ if(dev->flags & IFF_PROMISC)
+ sp->mode = SEEQ_RCMD_RANY;
+ else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
+ sp->mode = SEEQ_RCMD_RBMCAST;
+ else
+ sp->mode = SEEQ_RCMD_RBCAST;
+
+ /* XXX I know this sucks, but is there a better way to reprogram
+ * XXX the receiver? At least, this shouldn't happen too often.
+ */
+
+ if (oldmode != sp->mode)
+ sgiseeq_reset(dev);
+}
+
+static inline void setup_tx_ring(struct net_device *dev,
+ struct sgiseeq_tx_desc *buf,
+ int nbufs)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ int i = 0;
+
+ while (i < (nbufs - 1)) {
+ buf[i].tdma.pnext = VIRT_TO_DMA(sp, buf + i + 1);
+ buf[i].tdma.pbuf = 0;
+ dma_sync_desc_dev(dev, &buf[i]);
+ i++;
+ }
+ buf[i].tdma.pnext = VIRT_TO_DMA(sp, buf);
+ dma_sync_desc_dev(dev, &buf[i]);
+}
+
+static inline void setup_rx_ring(struct net_device *dev,
+ struct sgiseeq_rx_desc *buf,
+ int nbufs)
+{
+ struct sgiseeq_private *sp = netdev_priv(dev);
+ int i = 0;
+
+ while (i < (nbufs - 1)) {
+ buf[i].rdma.pnext = VIRT_TO_DMA(sp, buf + i + 1);
+ buf[i].rdma.pbuf = 0;
+ dma_sync_desc_dev(dev, &buf[i]);
+ i++;
+ }
+ buf[i].rdma.pbuf = 0;
+ buf[i].rdma.pnext = VIRT_TO_DMA(sp, buf);
+ dma_sync_desc_dev(dev, &buf[i]);
+}
+
+static const struct net_device_ops sgiseeq_netdev_ops = {
+ .ndo_open = sgiseeq_open,
+ .ndo_stop = sgiseeq_close,
+ .ndo_start_xmit = sgiseeq_start_xmit,
+ .ndo_tx_timeout = timeout,
+ .ndo_set_multicast_list = sgiseeq_set_multicast,
+ .ndo_set_mac_address = sgiseeq_set_mac_address,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static int __devinit sgiseeq_probe(struct platform_device *pdev)
+{
+ struct sgiseeq_platform_data *pd = pdev->dev.platform_data;
+ struct hpc3_regs *hpcregs = pd->hpc;
+ struct sgiseeq_init_block *sr;
+ unsigned int irq = pd->irq;
+ struct sgiseeq_private *sp;
+ struct net_device *dev;
+ int err;
+
+ dev = alloc_etherdev(sizeof (struct sgiseeq_private));
+ if (!dev) {
+ printk(KERN_ERR "Sgiseeq: Etherdev alloc failed, aborting.\n");
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ platform_set_drvdata(pdev, dev);
+ sp = netdev_priv(dev);
+
+ /* Make private data page aligned */
+ sr = dma_alloc_noncoherent(&pdev->dev, sizeof(*sp->srings),
+ &sp->srings_dma, GFP_KERNEL);
+ if (!sr) {
+ printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n");
+ err = -ENOMEM;
+ goto err_out_free_dev;
+ }
+ sp->srings = sr;
+ sp->rx_desc = sp->srings->rxvector;
+ sp->tx_desc = sp->srings->txvector;
+
+ /* A couple calculations now, saves many cycles later. */
+ setup_rx_ring(dev, sp->rx_desc, SEEQ_RX_BUFFERS);
+ setup_tx_ring(dev, sp->tx_desc, SEEQ_TX_BUFFERS);
+
+ memcpy(dev->dev_addr, pd->mac, ETH_ALEN);
+
+#ifdef DEBUG
+ gpriv = sp;
+ gdev = dev;
+#endif
+ sp->sregs = (struct sgiseeq_regs *) &hpcregs->eth_ext[0];
+ sp->hregs = &hpcregs->ethregs;
+ sp->name = sgiseeqstr;
+ sp->mode = SEEQ_RCMD_RBCAST;
+
+ /* Setup PIO and DMA transfer timing */
+ sp->hregs->pconfig = 0x161;
+ sp->hregs->dconfig = HPC3_EDCFG_FIRQ | HPC3_EDCFG_FEOP |
+ HPC3_EDCFG_FRXDC | HPC3_EDCFG_PTO | 0x026;
+
+ /* Setup PIO and DMA transfer timing */
+ sp->hregs->pconfig = 0x161;
+ sp->hregs->dconfig = HPC3_EDCFG_FIRQ | HPC3_EDCFG_FEOP |
+ HPC3_EDCFG_FRXDC | HPC3_EDCFG_PTO | 0x026;
+
+ /* Reset the chip. */
+ hpc3_eth_reset(sp->hregs);
+
+ sp->is_edlc = !(sp->sregs->rw.rregs.collision_tx[0] & 0xff);
+ if (sp->is_edlc)
+ sp->control = SEEQ_CTRL_XCNT | SEEQ_CTRL_ACCNT |
+ SEEQ_CTRL_SFLAG | SEEQ_CTRL_ESHORT |
+ SEEQ_CTRL_ENCARR;
+
+ dev->netdev_ops = &sgiseeq_netdev_ops;
+ dev->watchdog_timeo = (200 * HZ) / 1000;
+ dev->irq = irq;
+
+ if (register_netdev(dev)) {
+ printk(KERN_ERR "Sgiseeq: Cannot register net device, "
+ "aborting.\n");
+ err = -ENODEV;
+ goto err_out_free_page;
+ }
+
+ printk(KERN_INFO "%s: %s %pM\n", dev->name, sgiseeqstr, dev->dev_addr);
+
+ return 0;
+
+err_out_free_page:
+ free_page((unsigned long) sp->srings);
+err_out_free_dev:
+ free_netdev(dev);
+
+err_out:
+ return err;
+}
+
+static int __exit sgiseeq_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct sgiseeq_private *sp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ dma_free_noncoherent(&pdev->dev, sizeof(*sp->srings), sp->srings,
+ sp->srings_dma);
+ free_netdev(dev);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver sgiseeq_driver = {
+ .probe = sgiseeq_probe,
+ .remove = __exit_p(sgiseeq_remove),
+ .driver = {
+ .name = "sgiseeq",
+ .owner = THIS_MODULE,
+ }
+};
+
+static int __init sgiseeq_module_init(void)
+{
+ if (platform_driver_register(&sgiseeq_driver)) {
+ printk(KERN_ERR "Driver registration failed\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit sgiseeq_module_exit(void)
+{
+ platform_driver_unregister(&sgiseeq_driver);
+}
+
+module_init(sgiseeq_module_init);
+module_exit(sgiseeq_module_exit);
+
+MODULE_DESCRIPTION("SGI Seeq 8003 driver");
+MODULE_AUTHOR("Linux/MIPS Mailing List <linux-mips@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:sgiseeq");
--- /dev/null
+/*
+ * sgiseeq.h: Defines for the Seeq8003 ethernet controller.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
+ */
+#ifndef _SGISEEQ_H
+#define _SGISEEQ_H
+
+struct sgiseeq_wregs {
+ volatile unsigned int multicase_high[2];
+ volatile unsigned int frame_gap;
+ volatile unsigned int control;
+};
+
+struct sgiseeq_rregs {
+ volatile unsigned int collision_tx[2];
+ volatile unsigned int collision_all[2];
+ volatile unsigned int _unused0;
+ volatile unsigned int rflags;
+};
+
+struct sgiseeq_regs {
+ union {
+ volatile unsigned int eth_addr[6];
+ volatile unsigned int multicast_low[6];
+ struct sgiseeq_wregs wregs;
+ struct sgiseeq_rregs rregs;
+ } rw;
+ volatile unsigned int rstat;
+ volatile unsigned int tstat;
+};
+
+/* Seeq8003 receive status register */
+#define SEEQ_RSTAT_OVERF 0x001 /* Overflow */
+#define SEEQ_RSTAT_CERROR 0x002 /* CRC error */
+#define SEEQ_RSTAT_DERROR 0x004 /* Dribble error */
+#define SEEQ_RSTAT_SFRAME 0x008 /* Short frame */
+#define SEEQ_RSTAT_REOF 0x010 /* Received end of frame */
+#define SEEQ_RSTAT_FIG 0x020 /* Frame is good */
+#define SEEQ_RSTAT_TIMEO 0x040 /* Timeout, or late receive */
+#define SEEQ_RSTAT_WHICH 0x080 /* Which status, 1=old 0=new */
+#define SEEQ_RSTAT_LITTLE 0x100 /* DMA is done in little endian format */
+#define SEEQ_RSTAT_SDMA 0x200 /* DMA has started */
+#define SEEQ_RSTAT_ADMA 0x400 /* DMA is active */
+#define SEEQ_RSTAT_ROVERF 0x800 /* Receive buffer overflow */
+
+/* Seeq8003 receive command register */
+#define SEEQ_RCMD_RDISAB 0x000 /* Disable receiver on the Seeq8003 */
+#define SEEQ_RCMD_IOVERF 0x001 /* IRQ on buffer overflows */
+#define SEEQ_RCMD_ICRC 0x002 /* IRQ on CRC errors */
+#define SEEQ_RCMD_IDRIB 0x004 /* IRQ on dribble errors */
+#define SEEQ_RCMD_ISHORT 0x008 /* IRQ on short frames */
+#define SEEQ_RCMD_IEOF 0x010 /* IRQ on end of frame */
+#define SEEQ_RCMD_IGOOD 0x020 /* IRQ on good frames */
+#define SEEQ_RCMD_RANY 0x040 /* Receive any frame */
+#define SEEQ_RCMD_RBCAST 0x080 /* Receive broadcasts */
+#define SEEQ_RCMD_RBMCAST 0x0c0 /* Receive broadcasts/multicasts */
+
+/* Seeq8003 transmit status register */
+#define SEEQ_TSTAT_UFLOW 0x001 /* Transmit buffer underflow */
+#define SEEQ_TSTAT_CLS 0x002 /* Collision detected */
+#define SEEQ_TSTAT_R16 0x004 /* Did 16 retries to tx a frame */
+#define SEEQ_TSTAT_PTRANS 0x008 /* Packet was transmitted ok */
+#define SEEQ_TSTAT_LCLS 0x010 /* Late collision occurred */
+#define SEEQ_TSTAT_WHICH 0x080 /* Which status, 1=old 0=new */
+#define SEEQ_TSTAT_TLE 0x100 /* DMA is done in little endian format */
+#define SEEQ_TSTAT_SDMA 0x200 /* DMA has started */
+#define SEEQ_TSTAT_ADMA 0x400 /* DMA is active */
+
+/* Seeq8003 transmit command register */
+#define SEEQ_TCMD_RB0 0x00 /* Register bank zero w/station addr */
+#define SEEQ_TCMD_IUF 0x01 /* IRQ on tx underflow */
+#define SEEQ_TCMD_IC 0x02 /* IRQ on collisions */
+#define SEEQ_TCMD_I16 0x04 /* IRQ after 16 failed attempts to tx frame */
+#define SEEQ_TCMD_IPT 0x08 /* IRQ when packet successfully transmitted */
+#define SEEQ_TCMD_RB1 0x20 /* Register bank one w/multi-cast low byte */
+#define SEEQ_TCMD_RB2 0x40 /* Register bank two w/multi-cast high byte */
+
+/* Seeq8003 control register */
+#define SEEQ_CTRL_XCNT 0x01
+#define SEEQ_CTRL_ACCNT 0x02
+#define SEEQ_CTRL_SFLAG 0x04
+#define SEEQ_CTRL_EMULTI 0x08
+#define SEEQ_CTRL_ESHORT 0x10
+#define SEEQ_CTRL_ENCARR 0x20
+
+/* Seeq8003 control registers on the SGI Hollywood HPC. */
+#define SEEQ_HPIO_P1BITS 0x00000001 /* cycles to stay in P1 phase for PIO */
+#define SEEQ_HPIO_P2BITS 0x00000060 /* cycles to stay in P2 phase for PIO */
+#define SEEQ_HPIO_P3BITS 0x00000100 /* cycles to stay in P3 phase for PIO */
+#define SEEQ_HDMA_D1BITS 0x00000006 /* cycles to stay in D1 phase for DMA */
+#define SEEQ_HDMA_D2BITS 0x00000020 /* cycles to stay in D2 phase for DMA */
+#define SEEQ_HDMA_D3BITS 0x00000000 /* cycles to stay in D3 phase for DMA */
+#define SEEQ_HDMA_TIMEO 0x00030000 /* cycles for DMA timeout */
+#define SEEQ_HCTL_NORM 0x00000000 /* Normal operation mode */
+#define SEEQ_HCTL_RESET 0x00000001 /* Reset Seeq8003 and HPC interface */
+#define SEEQ_HCTL_IPEND 0x00000002 /* IRQ is pending for the chip */
+#define SEEQ_HCTL_IPG 0x00001000 /* Inter-packet gap */
+#define SEEQ_HCTL_RFIX 0x00002000 /* At rxdc, clear end-of-packet */
+#define SEEQ_HCTL_EFIX 0x00004000 /* fixes intr status bit settings */
+#define SEEQ_HCTL_IFIX 0x00008000 /* enable startup timeouts */
+
+#endif /* !(_SGISEEQ_H) */
+++ /dev/null
-/* seeq8005.c: A network driver for linux. */
-/*
- Based on skeleton.c,
- Written 1993-94 by Donald Becker.
- See the skeleton.c file for further copyright information.
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-
- The author may be reached as hamish@zot.apana.org.au
-
- This file is a network device driver for the SEEQ 8005 chipset and
- the Linux operating system.
-
-*/
-
-static const char version[] =
- "seeq8005.c:v1.00 8/07/95 Hamish Coleman (hamish@zot.apana.org.au)\n";
-
-/*
- Sources:
- SEEQ 8005 databook
-
- Version history:
- 1.00 Public release. cosmetic changes (no warnings now)
- 0.68 Turning per- packet,interrupt debug messages off - testing for release.
- 0.67 timing problems/bad buffer reads seem to be fixed now
- 0.63 *!@$ protocol=eth_type_trans -- now packets flow
- 0.56 Send working
- 0.48 Receive working
-*/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/bitops.h>
-#include <linux/jiffies.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-
-#include "seeq8005.h"
-
-/* First, a few definitions that the brave might change. */
-/* A zero-terminated list of I/O addresses to be probed. */
-static unsigned int seeq8005_portlist[] __initdata =
- { 0x300, 0x320, 0x340, 0x360, 0};
-
-/* use 0 for production, 1 for verification, >2 for debug */
-#ifndef NET_DEBUG
-#define NET_DEBUG 1
-#endif
-static unsigned int net_debug = NET_DEBUG;
-
-/* Information that need to be kept for each board. */
-struct net_local {
- unsigned short receive_ptr; /* What address in packet memory do we expect a recv_pkt_header? */
- long open_time; /* Useless example local info. */
-};
-
-/* The station (ethernet) address prefix, used for IDing the board. */
-#define SA_ADDR0 0x00
-#define SA_ADDR1 0x80
-#define SA_ADDR2 0x4b
-
-/* Index to functions, as function prototypes. */
-
-static int seeq8005_probe1(struct net_device *dev, int ioaddr);
-static int seeq8005_open(struct net_device *dev);
-static void seeq8005_timeout(struct net_device *dev);
-static netdev_tx_t seeq8005_send_packet(struct sk_buff *skb,
- struct net_device *dev);
-static irqreturn_t seeq8005_interrupt(int irq, void *dev_id);
-static void seeq8005_rx(struct net_device *dev);
-static int seeq8005_close(struct net_device *dev);
-static void set_multicast_list(struct net_device *dev);
-
-/* Example routines you must write ;->. */
-#define tx_done(dev) (inw(SEEQ_STATUS) & SEEQSTAT_TX_ON)
-static void hardware_send_packet(struct net_device *dev, char *buf, int length);
-extern void seeq8005_init(struct net_device *dev, int startp);
-static inline void wait_for_buffer(struct net_device *dev);
-
-
-/* Check for a network adaptor of this type, and return '0' iff one exists.
- If dev->base_addr == 0, probe all likely locations.
- If dev->base_addr == 1, always return failure.
- */
-
-static int io = 0x320;
-static int irq = 10;
-
-struct net_device * __init seeq8005_probe(int unit)
-{
- struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
- unsigned *port;
- int err = 0;
-
- if (!dev)
- return ERR_PTR(-ENODEV);
-
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- io = dev->base_addr;
- irq = dev->irq;
- }
-
- if (io > 0x1ff) { /* Check a single specified location. */
- err = seeq8005_probe1(dev, io);
- } else if (io != 0) { /* Don't probe at all. */
- err = -ENXIO;
- } else {
- for (port = seeq8005_portlist; *port; port++) {
- if (seeq8005_probe1(dev, *port) == 0)
- break;
- }
- if (!*port)
- err = -ENODEV;
- }
- if (err)
- goto out;
- err = register_netdev(dev);
- if (err)
- goto out1;
- return dev;
-out1:
- release_region(dev->base_addr, SEEQ8005_IO_EXTENT);
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-
-static const struct net_device_ops seeq8005_netdev_ops = {
- .ndo_open = seeq8005_open,
- .ndo_stop = seeq8005_close,
- .ndo_start_xmit = seeq8005_send_packet,
- .ndo_tx_timeout = seeq8005_timeout,
- .ndo_set_multicast_list = set_multicast_list,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-/* This is the real probe routine. Linux has a history of friendly device
- probes on the ISA bus. A good device probes avoids doing writes, and
- verifies that the correct device exists and functions. */
-
-static int __init seeq8005_probe1(struct net_device *dev, int ioaddr)
-{
- static unsigned version_printed;
- int i,j;
- unsigned char SA_prom[32];
- int old_cfg1;
- int old_cfg2;
- int old_stat;
- int old_dmaar;
- int old_rear;
- int retval;
-
- if (!request_region(ioaddr, SEEQ8005_IO_EXTENT, "seeq8005"))
- return -ENODEV;
-
- if (net_debug>1)
- printk("seeq8005: probing at 0x%x\n",ioaddr);
-
- old_stat = inw(SEEQ_STATUS); /* read status register */
- if (old_stat == 0xffff) {
- retval = -ENODEV;
- goto out; /* assume that 0xffff == no device */
- }
- if ( (old_stat & 0x1800) != 0x1800 ) { /* assume that unused bits are 1, as my manual says */
- if (net_debug>1) {
- printk("seeq8005: reserved stat bits != 0x1800\n");
- printk(" == 0x%04x\n",old_stat);
- }
- retval = -ENODEV;
- goto out;
- }
-
- old_rear = inw(SEEQ_REA);
- if (old_rear == 0xffff) {
- outw(0,SEEQ_REA);
- if (inw(SEEQ_REA) == 0xffff) { /* assume that 0xffff == no device */
- retval = -ENODEV;
- goto out;
- }
- } else if ((old_rear & 0xff00) != 0xff00) { /* assume that unused bits are 1 */
- if (net_debug>1) {
- printk("seeq8005: unused rear bits != 0xff00\n");
- printk(" == 0x%04x\n",old_rear);
- }
- retval = -ENODEV;
- goto out;
- }
-
- old_cfg2 = inw(SEEQ_CFG2); /* read CFG2 register */
- old_cfg1 = inw(SEEQ_CFG1);
- old_dmaar = inw(SEEQ_DMAAR);
-
- if (net_debug>4) {
- printk("seeq8005: stat = 0x%04x\n",old_stat);
- printk("seeq8005: cfg1 = 0x%04x\n",old_cfg1);
- printk("seeq8005: cfg2 = 0x%04x\n",old_cfg2);
- printk("seeq8005: raer = 0x%04x\n",old_rear);
- printk("seeq8005: dmaar= 0x%04x\n",old_dmaar);
- }
-
- outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); /* setup for reading PROM */
- outw( 0, SEEQ_DMAAR); /* set starting PROM address */
- outw( SEEQCFG1_BUFFER_PROM, SEEQ_CFG1); /* set buffer to look at PROM */
-
-
- j=0;
- for(i=0; i <32; i++) {
- j+= SA_prom[i] = inw(SEEQ_BUFFER) & 0xff;
- }
-
-#if 0
- /* untested because I only have the one card */
- if ( (j&0xff) != 0 ) { /* checksum appears to be 8bit = 0 */
- if (net_debug>1) { /* check this before deciding that we have a card */
- printk("seeq8005: prom sum error\n");
- }
- outw( old_stat, SEEQ_STATUS);
- outw( old_dmaar, SEEQ_DMAAR);
- outw( old_cfg1, SEEQ_CFG1);
- retval = -ENODEV;
- goto out;
- }
-#endif
-
- outw( SEEQCFG2_RESET, SEEQ_CFG2); /* reset the card */
- udelay(5);
- outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
-
- if (net_debug) {
- printk("seeq8005: prom sum = 0x%08x\n",j);
- for(j=0; j<32; j+=16) {
- printk("seeq8005: prom %02x: ",j);
- for(i=0;i<16;i++) {
- printk("%02x ",SA_prom[j|i]);
- }
- printk(" ");
- for(i=0;i<16;i++) {
- if ((SA_prom[j|i]>31)&&(SA_prom[j|i]<127)) {
- printk("%c", SA_prom[j|i]);
- } else {
- printk(" ");
- }
- }
- printk("\n");
- }
- }
-
-#if 0
- /*
- * testing the packet buffer memory doesn't work yet
- * but all other buffer accesses do
- * - fixing is not a priority
- */
- if (net_debug>1) { /* test packet buffer memory */
- printk("seeq8005: testing packet buffer ... ");
- outw( SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1);
- outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
- outw( 0 , SEEQ_DMAAR);
- for(i=0;i<32768;i++) {
- outw(0x5a5a, SEEQ_BUFFER);
- }
- j=jiffies+HZ;
- while ( ((inw(SEEQ_STATUS) & SEEQSTAT_FIFO_EMPTY) != SEEQSTAT_FIFO_EMPTY) && time_before(jiffies, j) )
- mb();
- outw( 0 , SEEQ_DMAAR);
- while ( ((inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, j+HZ))
- mb();
- if ( (inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT)
- outw( SEEQCMD_WINDOW_INT_ACK | (inw(SEEQ_STATUS)& SEEQCMD_INT_MASK), SEEQ_CMD);
- outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
- j=0;
- for(i=0;i<32768;i++) {
- if (inw(SEEQ_BUFFER) != 0x5a5a)
- j++;
- }
- if (j) {
- printk("%i\n",j);
- } else {
- printk("ok.\n");
- }
- }
-#endif
-
- if (net_debug && version_printed++ == 0)
- printk(version);
-
- printk("%s: %s found at %#3x, ", dev->name, "seeq8005", ioaddr);
-
- /* Fill in the 'dev' fields. */
- dev->base_addr = ioaddr;
- dev->irq = irq;
-
- /* Retrieve and print the ethernet address. */
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = SA_prom[i+6];
- printk("%pM", dev->dev_addr);
-
- if (dev->irq == 0xff)
- ; /* Do nothing: a user-level program will set it. */
- else if (dev->irq < 2) { /* "Auto-IRQ" */
- unsigned long cookie = probe_irq_on();
-
- outw( SEEQCMD_RX_INT_EN | SEEQCMD_SET_RX_ON | SEEQCMD_SET_RX_OFF, SEEQ_CMD );
-
- dev->irq = probe_irq_off(cookie);
-
- if (net_debug >= 2)
- printk(" autoirq is %d\n", dev->irq);
- } else if (dev->irq == 2)
- /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
- * or don't know which one to set.
- */
- dev->irq = 9;
-
-#if 0
- {
- int irqval = request_irq(dev->irq, seeq8005_interrupt, 0, "seeq8005", dev);
- if (irqval) {
- printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,
- dev->irq, irqval);
- retval = -EAGAIN;
- goto out;
- }
- }
-#endif
- dev->netdev_ops = &seeq8005_netdev_ops;
- dev->watchdog_timeo = HZ/20;
- dev->flags &= ~IFF_MULTICAST;
-
- return 0;
-out:
- release_region(ioaddr, SEEQ8005_IO_EXTENT);
- return retval;
-}
-
-
-/* Open/initialize the board. This is called (in the current kernel)
- sometime after booting when the 'ifconfig' program is run.
-
- This routine should set everything up anew at each open, even
- registers that "should" only need to be set once at boot, so that
- there is non-reboot way to recover if something goes wrong.
- */
-static int seeq8005_open(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
-
- {
- int irqval = request_irq(dev->irq, seeq8005_interrupt, 0, "seeq8005", dev);
- if (irqval) {
- printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,
- dev->irq, irqval);
- return -EAGAIN;
- }
- }
-
- /* Reset the hardware here. Don't forget to set the station address. */
- seeq8005_init(dev, 1);
-
- lp->open_time = jiffies;
-
- netif_start_queue(dev);
- return 0;
-}
-
-static void seeq8005_timeout(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
- printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
- tx_done(dev) ? "IRQ conflict" : "network cable problem");
- /* Try to restart the adaptor. */
- seeq8005_init(dev, 1);
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue(dev);
-}
-
-static netdev_tx_t seeq8005_send_packet(struct sk_buff *skb,
- struct net_device *dev)
-{
- short length = skb->len;
- unsigned char *buf;
-
- if (length < ETH_ZLEN) {
- if (skb_padto(skb, ETH_ZLEN))
- return NETDEV_TX_OK;
- length = ETH_ZLEN;
- }
- buf = skb->data;
-
- /* Block a timer-based transmit from overlapping */
- netif_stop_queue(dev);
-
- hardware_send_packet(dev, buf, length);
- dev->stats.tx_bytes += length;
- dev_kfree_skb (skb);
- /* You might need to clean up and record Tx statistics here. */
-
- return NETDEV_TX_OK;
-}
-
-/*
- * wait_for_buffer
- *
- * This routine waits for the SEEQ chip to assert that the FIFO is ready
- * by checking for a window interrupt, and then clearing it. This has to
- * occur in the interrupt handler!
- */
-inline void wait_for_buffer(struct net_device * dev)
-{
- int ioaddr = dev->base_addr;
- unsigned long tmp;
- int status;
-
- tmp = jiffies + HZ;
- while ( ( ((status=inw(SEEQ_STATUS)) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, tmp))
- cpu_relax();
-
- if ( (status & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT)
- outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
-}
-
-/* The typical workload of the driver:
- Handle the network interface interrupts. */
-static irqreturn_t seeq8005_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct net_local *lp;
- int ioaddr, status, boguscount = 0;
- int handled = 0;
-
- ioaddr = dev->base_addr;
- lp = netdev_priv(dev);
-
- status = inw(SEEQ_STATUS);
- do {
- if (net_debug >2) {
- printk("%s: int, status=0x%04x\n",dev->name,status);
- }
-
- if (status & SEEQSTAT_WINDOW_INT) {
- handled = 1;
- outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
- if (net_debug) {
- printk("%s: window int!\n",dev->name);
- }
- }
- if (status & SEEQSTAT_TX_INT) {
- handled = 1;
- outw( SEEQCMD_TX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
- dev->stats.tx_packets++;
- netif_wake_queue(dev); /* Inform upper layers. */
- }
- if (status & SEEQSTAT_RX_INT) {
- handled = 1;
- /* Got a packet(s). */
- seeq8005_rx(dev);
- }
- status = inw(SEEQ_STATUS);
- } while ( (++boguscount < 10) && (status & SEEQSTAT_ANY_INT)) ;
-
- if(net_debug>2) {
- printk("%s: eoi\n",dev->name);
- }
- return IRQ_RETVAL(handled);
-}
-
-/* We have a good packet(s), get it/them out of the buffers. */
-static void seeq8005_rx(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int boguscount = 10;
- int pkt_hdr;
- int ioaddr = dev->base_addr;
-
- do {
- int next_packet;
- int pkt_len;
- int i;
- int status;
-
- status = inw(SEEQ_STATUS);
- outw( lp->receive_ptr, SEEQ_DMAAR);
- outw(SEEQCMD_FIFO_READ | SEEQCMD_RX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
- wait_for_buffer(dev);
- next_packet = ntohs(inw(SEEQ_BUFFER));
- pkt_hdr = inw(SEEQ_BUFFER);
-
- if (net_debug>2) {
- printk("%s: 0x%04x recv next=0x%04x, hdr=0x%04x\n",dev->name,lp->receive_ptr,next_packet,pkt_hdr);
- }
-
- if ((next_packet == 0) || ((pkt_hdr & SEEQPKTH_CHAIN)==0)) { /* Read all the frames? */
- return; /* Done for now */
- }
-
- if ((pkt_hdr & SEEQPKTS_DONE)==0)
- break;
-
- if (next_packet < lp->receive_ptr) {
- pkt_len = (next_packet + 0x10000 - ((DEFAULT_TEA+1)<<8)) - lp->receive_ptr - 4;
- } else {
- pkt_len = next_packet - lp->receive_ptr - 4;
- }
-
- if (next_packet < ((DEFAULT_TEA+1)<<8)) { /* is the next_packet address sane? */
- printk("%s: recv packet ring corrupt, resetting board\n",dev->name);
- seeq8005_init(dev,1);
- return;
- }
-
- lp->receive_ptr = next_packet;
-
- if (net_debug>2) {
- printk("%s: recv len=0x%04x\n",dev->name,pkt_len);
- }
-
- if (pkt_hdr & SEEQPKTS_ANY_ERROR) { /* There was an error. */
- dev->stats.rx_errors++;
- if (pkt_hdr & SEEQPKTS_SHORT) dev->stats.rx_frame_errors++;
- if (pkt_hdr & SEEQPKTS_DRIB) dev->stats.rx_frame_errors++;
- if (pkt_hdr & SEEQPKTS_OVERSIZE) dev->stats.rx_over_errors++;
- if (pkt_hdr & SEEQPKTS_CRC_ERR) dev->stats.rx_crc_errors++;
- /* skip over this packet */
- outw( SEEQCMD_FIFO_WRITE | SEEQCMD_DMA_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
- outw( (lp->receive_ptr & 0xff00)>>8, SEEQ_REA);
- } else {
- /* Malloc up new buffer. */
- struct sk_buff *skb;
- unsigned char *buf;
-
- skb = dev_alloc_skb(pkt_len);
- if (skb == NULL) {
- printk("%s: Memory squeeze, dropping packet.\n", dev->name);
- dev->stats.rx_dropped++;
- break;
- }
- skb_reserve(skb, 2); /* align data on 16 byte */
- buf = skb_put(skb,pkt_len);
-
- insw(SEEQ_BUFFER, buf, (pkt_len + 1) >> 1);
-
- if (net_debug>2) {
- char * p = buf;
- printk("%s: recv ",dev->name);
- for(i=0;i<14;i++) {
- printk("%02x ",*(p++)&0xff);
- }
- printk("\n");
- }
-
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- }
- } while ((--boguscount) && (pkt_hdr & SEEQPKTH_CHAIN));
-
- /* If any worth-while packets have been received, netif_rx()
- has done a mark_bh(NET_BH) for us and will work on them
- when we get to the bottom-half routine. */
-}
-
-/* The inverse routine to net_open(). */
-static int seeq8005_close(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
-
- lp->open_time = 0;
-
- netif_stop_queue(dev);
-
- /* Flush the Tx and disable Rx here. */
- outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
-
- free_irq(dev->irq, dev);
-
- /* Update the statistics here. */
-
- return 0;
-
-}
-
-/* Set or clear the multicast filter for this adaptor.
- num_addrs == -1 Promiscuous mode, receive all packets
- num_addrs == 0 Normal mode, clear multicast list
- num_addrs > 0 Multicast mode, receive normal and MC packets, and do
- best-effort filtering.
- */
-static void set_multicast_list(struct net_device *dev)
-{
-/*
- * I _could_ do up to 6 addresses here, but won't (yet?)
- */
-
-#if 0
- int ioaddr = dev->base_addr;
-/*
- * hmm, not even sure if my matching works _anyway_ - seem to be receiving
- * _everything_ . . .
- */
-
- if (num_addrs) { /* Enable promiscuous mode */
- outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_ALL, SEEQ_CFG1);
- dev->flags|=IFF_PROMISC;
- } else { /* Disable promiscuous mode, use normal mode */
- outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_BROAD, SEEQ_CFG1);
- }
-#endif
-}
-
-void seeq8005_init(struct net_device *dev, int startp)
-{
- struct net_local *lp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
- int i;
-
- outw(SEEQCFG2_RESET, SEEQ_CFG2); /* reset device */
- udelay(5);
-
- outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
- outw( 0, SEEQ_DMAAR); /* load start address into both low and high byte */
-/* wait_for_buffer(dev); */ /* I think that you only need a wait for memory buffer */
- outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1);
-
- for(i=0;i<6;i++) { /* set Station address */
- outb(dev->dev_addr[i], SEEQ_BUFFER);
- udelay(2);
- }
-
- outw( SEEQCFG1_BUFFER_TEA, SEEQ_CFG1); /* set xmit end area pointer to 16K */
- outb( DEFAULT_TEA, SEEQ_BUFFER); /* this gives us 16K of send buffer and 48K of recv buffer */
-
- lp->receive_ptr = (DEFAULT_TEA+1)<<8; /* so we can find our packet_header */
- outw( lp->receive_ptr, SEEQ_RPR); /* Receive Pointer Register is set to recv buffer memory */
-
- outw( 0x00ff, SEEQ_REA); /* Receive Area End */
-
- if (net_debug>4) {
- printk("%s: SA0 = ",dev->name);
-
- outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
- outw( 0, SEEQ_DMAAR);
- outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1);
-
- for(i=0;i<6;i++) {
- printk("%02x ",inb(SEEQ_BUFFER));
- }
- printk("\n");
- }
-
- outw( SEEQCFG1_MAC0_EN | SEEQCFG1_MATCH_BROAD | SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1);
- outw( SEEQCFG2_AUTO_REA | SEEQCFG2_CTRLO, SEEQ_CFG2);
- outw( SEEQCMD_SET_RX_ON | SEEQCMD_TX_INT_EN | SEEQCMD_RX_INT_EN, SEEQ_CMD);
-
- if (net_debug>4) {
- int old_cfg1;
- old_cfg1 = inw(SEEQ_CFG1);
- printk("%s: stat = 0x%04x\n",dev->name,inw(SEEQ_STATUS));
- printk("%s: cfg1 = 0x%04x\n",dev->name,old_cfg1);
- printk("%s: cfg2 = 0x%04x\n",dev->name,inw(SEEQ_CFG2));
- printk("%s: raer = 0x%04x\n",dev->name,inw(SEEQ_REA));
- printk("%s: dmaar= 0x%04x\n",dev->name,inw(SEEQ_DMAAR));
-
- }
-}
-
-
-static void hardware_send_packet(struct net_device * dev, char *buf, int length)
-{
- int ioaddr = dev->base_addr;
- int status = inw(SEEQ_STATUS);
- int transmit_ptr = 0;
- unsigned long tmp;
-
- if (net_debug>4) {
- printk("%s: send 0x%04x\n",dev->name,length);
- }
-
- /* Set FIFO to writemode and set packet-buffer address */
- outw( SEEQCMD_FIFO_WRITE | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
- outw( transmit_ptr, SEEQ_DMAAR);
-
- /* output SEEQ Packet header barfage */
- outw( htons(length + 4), SEEQ_BUFFER);
- outw( SEEQPKTH_XMIT | SEEQPKTH_DATA_FOLLOWS | SEEQPKTH_XMIT_INT_EN, SEEQ_BUFFER );
-
- /* blat the buffer */
- outsw( SEEQ_BUFFER, buf, (length +1) >> 1);
- /* paranoia !! */
- outw( 0, SEEQ_BUFFER);
- outw( 0, SEEQ_BUFFER);
-
- /* set address of start of transmit chain */
- outw( transmit_ptr, SEEQ_TPR);
-
- /* drain FIFO */
- tmp = jiffies;
- while ( (((status=inw(SEEQ_STATUS)) & SEEQSTAT_FIFO_EMPTY) == 0) && time_before(jiffies, tmp + HZ))
- mb();
-
- /* doit ! */
- outw( SEEQCMD_WINDOW_INT_ACK | SEEQCMD_SET_TX_ON | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
-
-}
-
-
-#ifdef MODULE
-
-static struct net_device *dev_seeq;
-MODULE_LICENSE("GPL");
-module_param(io, int, 0);
-module_param(irq, int, 0);
-MODULE_PARM_DESC(io, "SEEQ 8005 I/O base address");
-MODULE_PARM_DESC(irq, "SEEQ 8005 IRQ number");
-
-int __init init_module(void)
-{
- dev_seeq = seeq8005_probe(-1);
- if (IS_ERR(dev_seeq))
- return PTR_ERR(dev_seeq);
- return 0;
-}
-
-void __exit cleanup_module(void)
-{
- unregister_netdev(dev_seeq);
- release_region(dev_seeq->base_addr, SEEQ8005_IO_EXTENT);
- free_netdev(dev_seeq);
-}
-
-#endif /* MODULE */
+++ /dev/null
-/*
- * defines, etc for the seeq8005
- */
-
-/*
- * This file is distributed under GPL.
- *
- * This style and layout of this file is also copied
- * from many of the other linux network device drivers.
- */
-
-/* The number of low I/O ports used by the ethercard. */
-#define SEEQ8005_IO_EXTENT 16
-
-#define SEEQ_B (ioaddr)
-
-#define SEEQ_CMD (SEEQ_B) /* Write only */
-#define SEEQ_STATUS (SEEQ_B) /* Read only */
-#define SEEQ_CFG1 (SEEQ_B + 2)
-#define SEEQ_CFG2 (SEEQ_B + 4)
-#define SEEQ_REA (SEEQ_B + 6) /* Receive End Area Register */
-#define SEEQ_RPR (SEEQ_B + 10) /* Receive Pointer Register */
-#define SEEQ_TPR (SEEQ_B + 12) /* Transmit Pointer Register */
-#define SEEQ_DMAAR (SEEQ_B + 14) /* DMA Address Register */
-#define SEEQ_BUFFER (SEEQ_B + 8) /* Buffer Window Register */
-
-#define DEFAULT_TEA (0x3f)
-
-#define SEEQCMD_DMA_INT_EN (0x0001) /* DMA Interrupt Enable */
-#define SEEQCMD_RX_INT_EN (0x0002) /* Receive Interrupt Enable */
-#define SEEQCMD_TX_INT_EN (0x0004) /* Transmit Interrupt Enable */
-#define SEEQCMD_WINDOW_INT_EN (0x0008) /* What the hell is this for?? */
-#define SEEQCMD_INT_MASK (0x000f)
-
-#define SEEQCMD_DMA_INT_ACK (0x0010) /* DMA ack */
-#define SEEQCMD_RX_INT_ACK (0x0020)
-#define SEEQCMD_TX_INT_ACK (0x0040)
-#define SEEQCMD_WINDOW_INT_ACK (0x0080)
-#define SEEQCMD_ACK_ALL (0x00f0)
-
-#define SEEQCMD_SET_DMA_ON (0x0100) /* Enables DMA Request logic */
-#define SEEQCMD_SET_RX_ON (0x0200) /* Enables Packet RX */
-#define SEEQCMD_SET_TX_ON (0x0400) /* Starts TX run */
-#define SEEQCMD_SET_DMA_OFF (0x0800)
-#define SEEQCMD_SET_RX_OFF (0x1000)
-#define SEEQCMD_SET_TX_OFF (0x2000)
-#define SEEQCMD_SET_ALL_OFF (0x3800) /* set all logic off */
-
-#define SEEQCMD_FIFO_READ (0x4000) /* Set FIFO to read mode (read from Buffer) */
-#define SEEQCMD_FIFO_WRITE (0x8000) /* Set FIFO to write mode */
-
-#define SEEQSTAT_DMA_INT_EN (0x0001) /* Status of interrupt enable */
-#define SEEQSTAT_RX_INT_EN (0x0002)
-#define SEEQSTAT_TX_INT_EN (0x0004)
-#define SEEQSTAT_WINDOW_INT_EN (0x0008)
-
-#define SEEQSTAT_DMA_INT (0x0010) /* Interrupt flagged */
-#define SEEQSTAT_RX_INT (0x0020)
-#define SEEQSTAT_TX_INT (0x0040)
-#define SEEQSTAT_WINDOW_INT (0x0080)
-#define SEEQSTAT_ANY_INT (0x00f0)
-
-#define SEEQSTAT_DMA_ON (0x0100) /* DMA logic on */
-#define SEEQSTAT_RX_ON (0x0200) /* Packet RX on */
-#define SEEQSTAT_TX_ON (0x0400) /* TX running */
-
-#define SEEQSTAT_FIFO_FULL (0x2000)
-#define SEEQSTAT_FIFO_EMPTY (0x4000)
-#define SEEQSTAT_FIFO_DIR (0x8000) /* 1=read, 0=write */
-
-#define SEEQCFG1_BUFFER_MASK (0x000f) /* define what maps into the BUFFER register */
-#define SEEQCFG1_BUFFER_MAC0 (0x0000) /* MAC station addresses 0-5 */
-#define SEEQCFG1_BUFFER_MAC1 (0x0001)
-#define SEEQCFG1_BUFFER_MAC2 (0x0002)
-#define SEEQCFG1_BUFFER_MAC3 (0x0003)
-#define SEEQCFG1_BUFFER_MAC4 (0x0004)
-#define SEEQCFG1_BUFFER_MAC5 (0x0005)
-#define SEEQCFG1_BUFFER_PROM (0x0006) /* The Address/CFG PROM */
-#define SEEQCFG1_BUFFER_TEA (0x0007) /* Transmit end area */
-#define SEEQCFG1_BUFFER_BUFFER (0x0008) /* Packet buffer memory */
-#define SEEQCFG1_BUFFER_INT_VEC (0x0009) /* Interrupt Vector */
-
-#define SEEQCFG1_DMA_INTVL_MASK (0x0030)
-#define SEEQCFG1_DMA_CONT (0x0000)
-#define SEEQCFG1_DMA_800ns (0x0010)
-#define SEEQCFG1_DMA_1600ns (0x0020)
-#define SEEQCFG1_DMA_3200ns (0x0030)
-
-#define SEEQCFG1_DMA_LEN_MASK (0x00c0)
-#define SEEQCFG1_DMA_LEN1 (0x0000)
-#define SEEQCFG1_DMA_LEN2 (0x0040)
-#define SEEQCFG1_DMA_LEN4 (0x0080)
-#define SEEQCFG1_DMA_LEN8 (0x00c0)
-
-#define SEEQCFG1_MAC_MASK (0x3f00) /* Dis/enable bits for MAC addresses */
-#define SEEQCFG1_MAC0_EN (0x0100)
-#define SEEQCFG1_MAC1_EN (0x0200)
-#define SEEQCFG1_MAC2_EN (0x0400)
-#define SEEQCFG1_MAC3_EN (0x0800)
-#define SEEQCFG1_MAC4_EN (0x1000)
-#define SEEQCFG1_MAC5_EN (0x2000)
-
-#define SEEQCFG1_MATCH_MASK (0xc000) /* Packet matching logic cfg bits */
-#define SEEQCFG1_MATCH_SPECIFIC (0x0000) /* only matching MAC addresses */
-#define SEEQCFG1_MATCH_BROAD (0x4000) /* matching and broadcast addresses */
-#define SEEQCFG1_MATCH_MULTI (0x8000) /* matching, broadcast and multicast */
-#define SEEQCFG1_MATCH_ALL (0xc000) /* Promiscuous mode */
-
-#define SEEQCFG1_DEFAULT (SEEQCFG1_BUFFER_BUFFER | SEEQCFG1_MAC0_EN | SEEQCFG1_MATCH_BROAD)
-
-#define SEEQCFG2_BYTE_SWAP (0x0001) /* 0=Intel byte-order */
-#define SEEQCFG2_AUTO_REA (0x0002) /* if set, Receive End Area will be updated when reading from Buffer */
-
-#define SEEQCFG2_CRC_ERR_EN (0x0008) /* enables receiving of packets with CRC errors */
-#define SEEQCFG2_DRIBBLE_EN (0x0010) /* enables receiving of non-aligned packets */
-#define SEEQCFG2_SHORT_EN (0x0020) /* enables receiving of short packets */
-
-#define SEEQCFG2_SLOTSEL (0x0040) /* 0= standard IEEE802.3, 1= smaller,faster, non-standard */
-#define SEEQCFG2_NO_PREAM (0x0080) /* 1= user supplies Xmit preamble bytes */
-#define SEEQCFG2_ADDR_LEN (0x0100) /* 1= 2byte addresses */
-#define SEEQCFG2_REC_CRC (0x0200) /* 0= received packets will have CRC stripped from them */
-#define SEEQCFG2_XMIT_NO_CRC (0x0400) /* don't xmit CRC with each packet (user supplies it) */
-#define SEEQCFG2_LOOPBACK (0x0800)
-#define SEEQCFG2_CTRLO (0x1000)
-#define SEEQCFG2_RESET (0x8000) /* software Hard-reset bit */
-
-struct seeq_pkt_hdr {
- unsigned short next; /* address of next packet header */
- unsigned char babble_int:1, /* enable int on >1514 byte packet */
- coll_int:1, /* enable int on collision */
- coll_16_int:1, /* enable int on >15 collision */
- xmit_int:1, /* enable int on success (or xmit with <15 collision) */
- unused:1,
- data_follows:1, /* if not set, process this as a header and pointer only */
- chain_cont:1, /* if set, more headers in chain only cmd bit valid in recv header */
- xmit_recv:1; /* if set, a xmit packet, else a receive packet.*/
- unsigned char status;
-};
-
-#define SEEQPKTH_BAB_INT_EN (0x01) /* xmit only */
-#define SEEQPKTH_COL_INT_EN (0x02) /* xmit only */
-#define SEEQPKTH_COL16_INT_EN (0x04) /* xmit only */
-#define SEEQPKTH_XMIT_INT_EN (0x08) /* xmit only */
-#define SEEQPKTH_DATA_FOLLOWS (0x20) /* supposedly in xmit only */
-#define SEEQPKTH_CHAIN (0x40) /* more headers follow */
-#define SEEQPKTH_XMIT (0x80)
-
-#define SEEQPKTS_BABBLE (0x0100) /* xmit only */
-#define SEEQPKTS_OVERSIZE (0x0100) /* recv only */
-#define SEEQPKTS_COLLISION (0x0200) /* xmit only */
-#define SEEQPKTS_CRC_ERR (0x0200) /* recv only */
-#define SEEQPKTS_COLL16 (0x0400) /* xmit only */
-#define SEEQPKTS_DRIB (0x0400) /* recv only */
-#define SEEQPKTS_SHORT (0x0800) /* recv only */
-#define SEEQPKTS_DONE (0x8000)
-#define SEEQPKTS_ANY_ERROR (0x0f00)
+++ /dev/null
-/*
- * sgiseeq.c: Seeq8003 ethernet driver for SGI machines.
- *
- * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
- */
-
-#undef DEBUG
-
-#include <linux/dma-mapping.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/platform_device.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-
-#include <asm/sgi/hpc3.h>
-#include <asm/sgi/ip22.h>
-#include <asm/sgi/seeq.h>
-
-#include "sgiseeq.h"
-
-static char *sgiseeqstr = "SGI Seeq8003";
-
-/*
- * If you want speed, you do something silly, it always has worked for me. So,
- * with that in mind, I've decided to make this driver look completely like a
- * stupid Lance from a driver architecture perspective. Only difference is that
- * here our "ring buffer" looks and acts like a real Lance one does but is
- * laid out like how the HPC DMA and the Seeq want it to. You'd be surprised
- * how a stupid idea like this can pay off in performance, not to mention
- * making this driver 2,000 times easier to write. ;-)
- */
-
-/* Tune these if we tend to run out often etc. */
-#define SEEQ_RX_BUFFERS 16
-#define SEEQ_TX_BUFFERS 16
-
-#define PKT_BUF_SZ 1584
-
-#define NEXT_RX(i) (((i) + 1) & (SEEQ_RX_BUFFERS - 1))
-#define NEXT_TX(i) (((i) + 1) & (SEEQ_TX_BUFFERS - 1))
-#define PREV_RX(i) (((i) - 1) & (SEEQ_RX_BUFFERS - 1))
-#define PREV_TX(i) (((i) - 1) & (SEEQ_TX_BUFFERS - 1))
-
-#define TX_BUFFS_AVAIL(sp) ((sp->tx_old <= sp->tx_new) ? \
- sp->tx_old + (SEEQ_TX_BUFFERS - 1) - sp->tx_new : \
- sp->tx_old - sp->tx_new - 1)
-
-#define VIRT_TO_DMA(sp, v) ((sp)->srings_dma + \
- (dma_addr_t)((unsigned long)(v) - \
- (unsigned long)((sp)->rx_desc)))
-
-/* Copy frames shorter than rx_copybreak, otherwise pass on up in
- * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
- */
-static int rx_copybreak = 100;
-
-#define PAD_SIZE (128 - sizeof(struct hpc_dma_desc) - sizeof(void *))
-
-struct sgiseeq_rx_desc {
- volatile struct hpc_dma_desc rdma;
- u8 padding[PAD_SIZE];
- struct sk_buff *skb;
-};
-
-struct sgiseeq_tx_desc {
- volatile struct hpc_dma_desc tdma;
- u8 padding[PAD_SIZE];
- struct sk_buff *skb;
-};
-
-/*
- * Warning: This structure is laid out in a certain way because HPC dma
- * descriptors must be 8-byte aligned. So don't touch this without
- * some care.
- */
-struct sgiseeq_init_block { /* Note the name ;-) */
- struct sgiseeq_rx_desc rxvector[SEEQ_RX_BUFFERS];
- struct sgiseeq_tx_desc txvector[SEEQ_TX_BUFFERS];
-};
-
-struct sgiseeq_private {
- struct sgiseeq_init_block *srings;
- dma_addr_t srings_dma;
-
- /* Ptrs to the descriptors in uncached space. */
- struct sgiseeq_rx_desc *rx_desc;
- struct sgiseeq_tx_desc *tx_desc;
-
- char *name;
- struct hpc3_ethregs *hregs;
- struct sgiseeq_regs *sregs;
-
- /* Ring entry counters. */
- unsigned int rx_new, tx_new;
- unsigned int rx_old, tx_old;
-
- int is_edlc;
- unsigned char control;
- unsigned char mode;
-
- spinlock_t tx_lock;
-};
-
-static inline void dma_sync_desc_cpu(struct net_device *dev, void *addr)
-{
- dma_cache_sync(dev->dev.parent, addr, sizeof(struct sgiseeq_rx_desc),
- DMA_FROM_DEVICE);
-}
-
-static inline void dma_sync_desc_dev(struct net_device *dev, void *addr)
-{
- dma_cache_sync(dev->dev.parent, addr, sizeof(struct sgiseeq_rx_desc),
- DMA_TO_DEVICE);
-}
-
-static inline void hpc3_eth_reset(struct hpc3_ethregs *hregs)
-{
- hregs->reset = HPC3_ERST_CRESET | HPC3_ERST_CLRIRQ;
- udelay(20);
- hregs->reset = 0;
-}
-
-static inline void reset_hpc3_and_seeq(struct hpc3_ethregs *hregs,
- struct sgiseeq_regs *sregs)
-{
- hregs->rx_ctrl = hregs->tx_ctrl = 0;
- hpc3_eth_reset(hregs);
-}
-
-#define RSTAT_GO_BITS (SEEQ_RCMD_IGOOD | SEEQ_RCMD_IEOF | SEEQ_RCMD_ISHORT | \
- SEEQ_RCMD_IDRIB | SEEQ_RCMD_ICRC)
-
-static inline void seeq_go(struct sgiseeq_private *sp,
- struct hpc3_ethregs *hregs,
- struct sgiseeq_regs *sregs)
-{
- sregs->rstat = sp->mode | RSTAT_GO_BITS;
- hregs->rx_ctrl = HPC3_ERXCTRL_ACTIVE;
-}
-
-static inline void __sgiseeq_set_mac_address(struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- struct sgiseeq_regs *sregs = sp->sregs;
- int i;
-
- sregs->tstat = SEEQ_TCMD_RB0;
- for (i = 0; i < 6; i++)
- sregs->rw.eth_addr[i] = dev->dev_addr[i];
-}
-
-static int sgiseeq_set_mac_address(struct net_device *dev, void *addr)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- struct sockaddr *sa = addr;
-
- memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
-
- spin_lock_irq(&sp->tx_lock);
- __sgiseeq_set_mac_address(dev);
- spin_unlock_irq(&sp->tx_lock);
-
- return 0;
-}
-
-#define TCNTINFO_INIT (HPCDMA_EOX | HPCDMA_ETXD)
-#define RCNTCFG_INIT (HPCDMA_OWN | HPCDMA_EORP | HPCDMA_XIE)
-#define RCNTINFO_INIT (RCNTCFG_INIT | (PKT_BUF_SZ & HPCDMA_BCNT))
-
-static int seeq_init_ring(struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- int i;
-
- netif_stop_queue(dev);
- sp->rx_new = sp->tx_new = 0;
- sp->rx_old = sp->tx_old = 0;
-
- __sgiseeq_set_mac_address(dev);
-
- /* Setup tx ring. */
- for(i = 0; i < SEEQ_TX_BUFFERS; i++) {
- sp->tx_desc[i].tdma.cntinfo = TCNTINFO_INIT;
- dma_sync_desc_dev(dev, &sp->tx_desc[i]);
- }
-
- /* And now the rx ring. */
- for (i = 0; i < SEEQ_RX_BUFFERS; i++) {
- if (!sp->rx_desc[i].skb) {
- dma_addr_t dma_addr;
- struct sk_buff *skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
-
- if (skb == NULL)
- return -ENOMEM;
- skb_reserve(skb, 2);
- dma_addr = dma_map_single(dev->dev.parent,
- skb->data - 2,
- PKT_BUF_SZ, DMA_FROM_DEVICE);
- sp->rx_desc[i].skb = skb;
- sp->rx_desc[i].rdma.pbuf = dma_addr;
- }
- sp->rx_desc[i].rdma.cntinfo = RCNTINFO_INIT;
- dma_sync_desc_dev(dev, &sp->rx_desc[i]);
- }
- sp->rx_desc[i - 1].rdma.cntinfo |= HPCDMA_EOR;
- dma_sync_desc_dev(dev, &sp->rx_desc[i - 1]);
- return 0;
-}
-
-static void seeq_purge_ring(struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- int i;
-
- /* clear tx ring. */
- for (i = 0; i < SEEQ_TX_BUFFERS; i++) {
- if (sp->tx_desc[i].skb) {
- dev_kfree_skb(sp->tx_desc[i].skb);
- sp->tx_desc[i].skb = NULL;
- }
- }
-
- /* And now the rx ring. */
- for (i = 0; i < SEEQ_RX_BUFFERS; i++) {
- if (sp->rx_desc[i].skb) {
- dev_kfree_skb(sp->rx_desc[i].skb);
- sp->rx_desc[i].skb = NULL;
- }
- }
-}
-
-#ifdef DEBUG
-static struct sgiseeq_private *gpriv;
-static struct net_device *gdev;
-
-static void sgiseeq_dump_rings(void)
-{
- static int once;
- struct sgiseeq_rx_desc *r = gpriv->rx_desc;
- struct sgiseeq_tx_desc *t = gpriv->tx_desc;
- struct hpc3_ethregs *hregs = gpriv->hregs;
- int i;
-
- if (once)
- return;
- once++;
- printk("RING DUMP:\n");
- for (i = 0; i < SEEQ_RX_BUFFERS; i++) {
- printk("RX [%d]: @(%p) [%08x,%08x,%08x] ",
- i, (&r[i]), r[i].rdma.pbuf, r[i].rdma.cntinfo,
- r[i].rdma.pnext);
- i += 1;
- printk("-- [%d]: @(%p) [%08x,%08x,%08x]\n",
- i, (&r[i]), r[i].rdma.pbuf, r[i].rdma.cntinfo,
- r[i].rdma.pnext);
- }
- for (i = 0; i < SEEQ_TX_BUFFERS; i++) {
- printk("TX [%d]: @(%p) [%08x,%08x,%08x] ",
- i, (&t[i]), t[i].tdma.pbuf, t[i].tdma.cntinfo,
- t[i].tdma.pnext);
- i += 1;
- printk("-- [%d]: @(%p) [%08x,%08x,%08x]\n",
- i, (&t[i]), t[i].tdma.pbuf, t[i].tdma.cntinfo,
- t[i].tdma.pnext);
- }
- printk("INFO: [rx_new = %d rx_old=%d] [tx_new = %d tx_old = %d]\n",
- gpriv->rx_new, gpriv->rx_old, gpriv->tx_new, gpriv->tx_old);
- printk("RREGS: rx_cbptr[%08x] rx_ndptr[%08x] rx_ctrl[%08x]\n",
- hregs->rx_cbptr, hregs->rx_ndptr, hregs->rx_ctrl);
- printk("TREGS: tx_cbptr[%08x] tx_ndptr[%08x] tx_ctrl[%08x]\n",
- hregs->tx_cbptr, hregs->tx_ndptr, hregs->tx_ctrl);
-}
-#endif
-
-#define TSTAT_INIT_SEEQ (SEEQ_TCMD_IPT|SEEQ_TCMD_I16|SEEQ_TCMD_IC|SEEQ_TCMD_IUF)
-#define TSTAT_INIT_EDLC ((TSTAT_INIT_SEEQ) | SEEQ_TCMD_RB2)
-
-static int init_seeq(struct net_device *dev, struct sgiseeq_private *sp,
- struct sgiseeq_regs *sregs)
-{
- struct hpc3_ethregs *hregs = sp->hregs;
- int err;
-
- reset_hpc3_and_seeq(hregs, sregs);
- err = seeq_init_ring(dev);
- if (err)
- return err;
-
- /* Setup to field the proper interrupt types. */
- if (sp->is_edlc) {
- sregs->tstat = TSTAT_INIT_EDLC;
- sregs->rw.wregs.control = sp->control;
- sregs->rw.wregs.frame_gap = 0;
- } else {
- sregs->tstat = TSTAT_INIT_SEEQ;
- }
-
- hregs->rx_ndptr = VIRT_TO_DMA(sp, sp->rx_desc);
- hregs->tx_ndptr = VIRT_TO_DMA(sp, sp->tx_desc);
-
- seeq_go(sp, hregs, sregs);
- return 0;
-}
-
-static void record_rx_errors(struct net_device *dev, unsigned char status)
-{
- if (status & SEEQ_RSTAT_OVERF ||
- status & SEEQ_RSTAT_SFRAME)
- dev->stats.rx_over_errors++;
- if (status & SEEQ_RSTAT_CERROR)
- dev->stats.rx_crc_errors++;
- if (status & SEEQ_RSTAT_DERROR)
- dev->stats.rx_frame_errors++;
- if (status & SEEQ_RSTAT_REOF)
- dev->stats.rx_errors++;
-}
-
-static inline void rx_maybe_restart(struct sgiseeq_private *sp,
- struct hpc3_ethregs *hregs,
- struct sgiseeq_regs *sregs)
-{
- if (!(hregs->rx_ctrl & HPC3_ERXCTRL_ACTIVE)) {
- hregs->rx_ndptr = VIRT_TO_DMA(sp, sp->rx_desc + sp->rx_new);
- seeq_go(sp, hregs, sregs);
- }
-}
-
-static inline void sgiseeq_rx(struct net_device *dev, struct sgiseeq_private *sp,
- struct hpc3_ethregs *hregs,
- struct sgiseeq_regs *sregs)
-{
- struct sgiseeq_rx_desc *rd;
- struct sk_buff *skb = NULL;
- struct sk_buff *newskb;
- unsigned char pkt_status;
- int len = 0;
- unsigned int orig_end = PREV_RX(sp->rx_new);
-
- /* Service every received packet. */
- rd = &sp->rx_desc[sp->rx_new];
- dma_sync_desc_cpu(dev, rd);
- while (!(rd->rdma.cntinfo & HPCDMA_OWN)) {
- len = PKT_BUF_SZ - (rd->rdma.cntinfo & HPCDMA_BCNT) - 3;
- dma_unmap_single(dev->dev.parent, rd->rdma.pbuf,
- PKT_BUF_SZ, DMA_FROM_DEVICE);
- pkt_status = rd->skb->data[len];
- if (pkt_status & SEEQ_RSTAT_FIG) {
- /* Packet is OK. */
- /* We don't want to receive our own packets */
- if (memcmp(rd->skb->data + 6, dev->dev_addr, ETH_ALEN)) {
- if (len > rx_copybreak) {
- skb = rd->skb;
- newskb = netdev_alloc_skb(dev, PKT_BUF_SZ);
- if (!newskb) {
- newskb = skb;
- skb = NULL;
- goto memory_squeeze;
- }
- skb_reserve(newskb, 2);
- } else {
- skb = netdev_alloc_skb_ip_align(dev, len);
- if (skb)
- skb_copy_to_linear_data(skb, rd->skb->data, len);
-
- newskb = rd->skb;
- }
-memory_squeeze:
- if (skb) {
- skb_put(skb, len);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += len;
- } else {
- printk(KERN_NOTICE "%s: Memory squeeze, deferring packet.\n",
- dev->name);
- dev->stats.rx_dropped++;
- }
- } else {
- /* Silently drop my own packets */
- newskb = rd->skb;
- }
- } else {
- record_rx_errors(dev, pkt_status);
- newskb = rd->skb;
- }
- rd->skb = newskb;
- rd->rdma.pbuf = dma_map_single(dev->dev.parent,
- newskb->data - 2,
- PKT_BUF_SZ, DMA_FROM_DEVICE);
-
- /* Return the entry to the ring pool. */
- rd->rdma.cntinfo = RCNTINFO_INIT;
- sp->rx_new = NEXT_RX(sp->rx_new);
- dma_sync_desc_dev(dev, rd);
- rd = &sp->rx_desc[sp->rx_new];
- dma_sync_desc_cpu(dev, rd);
- }
- dma_sync_desc_cpu(dev, &sp->rx_desc[orig_end]);
- sp->rx_desc[orig_end].rdma.cntinfo &= ~(HPCDMA_EOR);
- dma_sync_desc_dev(dev, &sp->rx_desc[orig_end]);
- dma_sync_desc_cpu(dev, &sp->rx_desc[PREV_RX(sp->rx_new)]);
- sp->rx_desc[PREV_RX(sp->rx_new)].rdma.cntinfo |= HPCDMA_EOR;
- dma_sync_desc_dev(dev, &sp->rx_desc[PREV_RX(sp->rx_new)]);
- rx_maybe_restart(sp, hregs, sregs);
-}
-
-static inline void tx_maybe_reset_collisions(struct sgiseeq_private *sp,
- struct sgiseeq_regs *sregs)
-{
- if (sp->is_edlc) {
- sregs->rw.wregs.control = sp->control & ~(SEEQ_CTRL_XCNT);
- sregs->rw.wregs.control = sp->control;
- }
-}
-
-static inline void kick_tx(struct net_device *dev,
- struct sgiseeq_private *sp,
- struct hpc3_ethregs *hregs)
-{
- struct sgiseeq_tx_desc *td;
- int i = sp->tx_old;
-
- /* If the HPC aint doin nothin, and there are more packets
- * with ETXD cleared and XIU set we must make very certain
- * that we restart the HPC else we risk locking up the
- * adapter. The following code is only safe iff the HPCDMA
- * is not active!
- */
- td = &sp->tx_desc[i];
- dma_sync_desc_cpu(dev, td);
- while ((td->tdma.cntinfo & (HPCDMA_XIU | HPCDMA_ETXD)) ==
- (HPCDMA_XIU | HPCDMA_ETXD)) {
- i = NEXT_TX(i);
- td = &sp->tx_desc[i];
- dma_sync_desc_cpu(dev, td);
- }
- if (td->tdma.cntinfo & HPCDMA_XIU) {
- hregs->tx_ndptr = VIRT_TO_DMA(sp, td);
- hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE;
- }
-}
-
-static inline void sgiseeq_tx(struct net_device *dev, struct sgiseeq_private *sp,
- struct hpc3_ethregs *hregs,
- struct sgiseeq_regs *sregs)
-{
- struct sgiseeq_tx_desc *td;
- unsigned long status = hregs->tx_ctrl;
- int j;
-
- tx_maybe_reset_collisions(sp, sregs);
-
- if (!(status & (HPC3_ETXCTRL_ACTIVE | SEEQ_TSTAT_PTRANS))) {
- /* Oops, HPC detected some sort of error. */
- if (status & SEEQ_TSTAT_R16)
- dev->stats.tx_aborted_errors++;
- if (status & SEEQ_TSTAT_UFLOW)
- dev->stats.tx_fifo_errors++;
- if (status & SEEQ_TSTAT_LCLS)
- dev->stats.collisions++;
- }
-
- /* Ack 'em... */
- for (j = sp->tx_old; j != sp->tx_new; j = NEXT_TX(j)) {
- td = &sp->tx_desc[j];
-
- dma_sync_desc_cpu(dev, td);
- if (!(td->tdma.cntinfo & (HPCDMA_XIU)))
- break;
- if (!(td->tdma.cntinfo & (HPCDMA_ETXD))) {
- if (!(status & HPC3_ETXCTRL_ACTIVE)) {
- hregs->tx_ndptr = VIRT_TO_DMA(sp, td);
- hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE;
- }
- break;
- }
- dev->stats.tx_packets++;
- sp->tx_old = NEXT_TX(sp->tx_old);
- td->tdma.cntinfo &= ~(HPCDMA_XIU | HPCDMA_XIE);
- td->tdma.cntinfo |= HPCDMA_EOX;
- if (td->skb) {
- dev_kfree_skb_any(td->skb);
- td->skb = NULL;
- }
- dma_sync_desc_dev(dev, td);
- }
-}
-
-static irqreturn_t sgiseeq_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- struct sgiseeq_private *sp = netdev_priv(dev);
- struct hpc3_ethregs *hregs = sp->hregs;
- struct sgiseeq_regs *sregs = sp->sregs;
-
- spin_lock(&sp->tx_lock);
-
- /* Ack the IRQ and set software state. */
- hregs->reset = HPC3_ERST_CLRIRQ;
-
- /* Always check for received packets. */
- sgiseeq_rx(dev, sp, hregs, sregs);
-
- /* Only check for tx acks if we have something queued. */
- if (sp->tx_old != sp->tx_new)
- sgiseeq_tx(dev, sp, hregs, sregs);
-
- if ((TX_BUFFS_AVAIL(sp) > 0) && netif_queue_stopped(dev)) {
- netif_wake_queue(dev);
- }
- spin_unlock(&sp->tx_lock);
-
- return IRQ_HANDLED;
-}
-
-static int sgiseeq_open(struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- struct sgiseeq_regs *sregs = sp->sregs;
- unsigned int irq = dev->irq;
- int err;
-
- if (request_irq(irq, sgiseeq_interrupt, 0, sgiseeqstr, dev)) {
- printk(KERN_ERR "Seeq8003: Can't get irq %d\n", dev->irq);
- return -EAGAIN;
- }
-
- err = init_seeq(dev, sp, sregs);
- if (err)
- goto out_free_irq;
-
- netif_start_queue(dev);
-
- return 0;
-
-out_free_irq:
- free_irq(irq, dev);
-
- return err;
-}
-
-static int sgiseeq_close(struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- struct sgiseeq_regs *sregs = sp->sregs;
- unsigned int irq = dev->irq;
-
- netif_stop_queue(dev);
-
- /* Shutdown the Seeq. */
- reset_hpc3_and_seeq(sp->hregs, sregs);
- free_irq(irq, dev);
- seeq_purge_ring(dev);
-
- return 0;
-}
-
-static inline int sgiseeq_reset(struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- struct sgiseeq_regs *sregs = sp->sregs;
- int err;
-
- err = init_seeq(dev, sp, sregs);
- if (err)
- return err;
-
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue(dev);
-
- return 0;
-}
-
-static int sgiseeq_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- struct hpc3_ethregs *hregs = sp->hregs;
- unsigned long flags;
- struct sgiseeq_tx_desc *td;
- int len, entry;
-
- spin_lock_irqsave(&sp->tx_lock, flags);
-
- /* Setup... */
- len = skb->len;
- if (len < ETH_ZLEN) {
- if (skb_padto(skb, ETH_ZLEN)) {
- spin_unlock_irqrestore(&sp->tx_lock, flags);
- return NETDEV_TX_OK;
- }
- len = ETH_ZLEN;
- }
-
- dev->stats.tx_bytes += len;
- entry = sp->tx_new;
- td = &sp->tx_desc[entry];
- dma_sync_desc_cpu(dev, td);
-
- /* Create entry. There are so many races with adding a new
- * descriptor to the chain:
- * 1) Assume that the HPC is off processing a DMA chain while
- * we are changing all of the following.
- * 2) Do no allow the HPC to look at a new descriptor until
- * we have completely set up it's state. This means, do
- * not clear HPCDMA_EOX in the current last descritptor
- * until the one we are adding looks consistent and could
- * be processes right now.
- * 3) The tx interrupt code must notice when we've added a new
- * entry and the HPC got to the end of the chain before we
- * added this new entry and restarted it.
- */
- td->skb = skb;
- td->tdma.pbuf = dma_map_single(dev->dev.parent, skb->data,
- len, DMA_TO_DEVICE);
- td->tdma.cntinfo = (len & HPCDMA_BCNT) |
- HPCDMA_XIU | HPCDMA_EOXP | HPCDMA_XIE | HPCDMA_EOX;
- dma_sync_desc_dev(dev, td);
- if (sp->tx_old != sp->tx_new) {
- struct sgiseeq_tx_desc *backend;
-
- backend = &sp->tx_desc[PREV_TX(sp->tx_new)];
- dma_sync_desc_cpu(dev, backend);
- backend->tdma.cntinfo &= ~HPCDMA_EOX;
- dma_sync_desc_dev(dev, backend);
- }
- sp->tx_new = NEXT_TX(sp->tx_new); /* Advance. */
-
- /* Maybe kick the HPC back into motion. */
- if (!(hregs->tx_ctrl & HPC3_ETXCTRL_ACTIVE))
- kick_tx(dev, sp, hregs);
-
- if (!TX_BUFFS_AVAIL(sp))
- netif_stop_queue(dev);
- spin_unlock_irqrestore(&sp->tx_lock, flags);
-
- return NETDEV_TX_OK;
-}
-
-static void timeout(struct net_device *dev)
-{
- printk(KERN_NOTICE "%s: transmit timed out, resetting\n", dev->name);
- sgiseeq_reset(dev);
-
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue(dev);
-}
-
-static void sgiseeq_set_multicast(struct net_device *dev)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- unsigned char oldmode = sp->mode;
-
- if(dev->flags & IFF_PROMISC)
- sp->mode = SEEQ_RCMD_RANY;
- else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
- sp->mode = SEEQ_RCMD_RBMCAST;
- else
- sp->mode = SEEQ_RCMD_RBCAST;
-
- /* XXX I know this sucks, but is there a better way to reprogram
- * XXX the receiver? At least, this shouldn't happen too often.
- */
-
- if (oldmode != sp->mode)
- sgiseeq_reset(dev);
-}
-
-static inline void setup_tx_ring(struct net_device *dev,
- struct sgiseeq_tx_desc *buf,
- int nbufs)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- int i = 0;
-
- while (i < (nbufs - 1)) {
- buf[i].tdma.pnext = VIRT_TO_DMA(sp, buf + i + 1);
- buf[i].tdma.pbuf = 0;
- dma_sync_desc_dev(dev, &buf[i]);
- i++;
- }
- buf[i].tdma.pnext = VIRT_TO_DMA(sp, buf);
- dma_sync_desc_dev(dev, &buf[i]);
-}
-
-static inline void setup_rx_ring(struct net_device *dev,
- struct sgiseeq_rx_desc *buf,
- int nbufs)
-{
- struct sgiseeq_private *sp = netdev_priv(dev);
- int i = 0;
-
- while (i < (nbufs - 1)) {
- buf[i].rdma.pnext = VIRT_TO_DMA(sp, buf + i + 1);
- buf[i].rdma.pbuf = 0;
- dma_sync_desc_dev(dev, &buf[i]);
- i++;
- }
- buf[i].rdma.pbuf = 0;
- buf[i].rdma.pnext = VIRT_TO_DMA(sp, buf);
- dma_sync_desc_dev(dev, &buf[i]);
-}
-
-static const struct net_device_ops sgiseeq_netdev_ops = {
- .ndo_open = sgiseeq_open,
- .ndo_stop = sgiseeq_close,
- .ndo_start_xmit = sgiseeq_start_xmit,
- .ndo_tx_timeout = timeout,
- .ndo_set_multicast_list = sgiseeq_set_multicast,
- .ndo_set_mac_address = sgiseeq_set_mac_address,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int __devinit sgiseeq_probe(struct platform_device *pdev)
-{
- struct sgiseeq_platform_data *pd = pdev->dev.platform_data;
- struct hpc3_regs *hpcregs = pd->hpc;
- struct sgiseeq_init_block *sr;
- unsigned int irq = pd->irq;
- struct sgiseeq_private *sp;
- struct net_device *dev;
- int err;
-
- dev = alloc_etherdev(sizeof (struct sgiseeq_private));
- if (!dev) {
- printk(KERN_ERR "Sgiseeq: Etherdev alloc failed, aborting.\n");
- err = -ENOMEM;
- goto err_out;
- }
-
- platform_set_drvdata(pdev, dev);
- sp = netdev_priv(dev);
-
- /* Make private data page aligned */
- sr = dma_alloc_noncoherent(&pdev->dev, sizeof(*sp->srings),
- &sp->srings_dma, GFP_KERNEL);
- if (!sr) {
- printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n");
- err = -ENOMEM;
- goto err_out_free_dev;
- }
- sp->srings = sr;
- sp->rx_desc = sp->srings->rxvector;
- sp->tx_desc = sp->srings->txvector;
-
- /* A couple calculations now, saves many cycles later. */
- setup_rx_ring(dev, sp->rx_desc, SEEQ_RX_BUFFERS);
- setup_tx_ring(dev, sp->tx_desc, SEEQ_TX_BUFFERS);
-
- memcpy(dev->dev_addr, pd->mac, ETH_ALEN);
-
-#ifdef DEBUG
- gpriv = sp;
- gdev = dev;
-#endif
- sp->sregs = (struct sgiseeq_regs *) &hpcregs->eth_ext[0];
- sp->hregs = &hpcregs->ethregs;
- sp->name = sgiseeqstr;
- sp->mode = SEEQ_RCMD_RBCAST;
-
- /* Setup PIO and DMA transfer timing */
- sp->hregs->pconfig = 0x161;
- sp->hregs->dconfig = HPC3_EDCFG_FIRQ | HPC3_EDCFG_FEOP |
- HPC3_EDCFG_FRXDC | HPC3_EDCFG_PTO | 0x026;
-
- /* Setup PIO and DMA transfer timing */
- sp->hregs->pconfig = 0x161;
- sp->hregs->dconfig = HPC3_EDCFG_FIRQ | HPC3_EDCFG_FEOP |
- HPC3_EDCFG_FRXDC | HPC3_EDCFG_PTO | 0x026;
-
- /* Reset the chip. */
- hpc3_eth_reset(sp->hregs);
-
- sp->is_edlc = !(sp->sregs->rw.rregs.collision_tx[0] & 0xff);
- if (sp->is_edlc)
- sp->control = SEEQ_CTRL_XCNT | SEEQ_CTRL_ACCNT |
- SEEQ_CTRL_SFLAG | SEEQ_CTRL_ESHORT |
- SEEQ_CTRL_ENCARR;
-
- dev->netdev_ops = &sgiseeq_netdev_ops;
- dev->watchdog_timeo = (200 * HZ) / 1000;
- dev->irq = irq;
-
- if (register_netdev(dev)) {
- printk(KERN_ERR "Sgiseeq: Cannot register net device, "
- "aborting.\n");
- err = -ENODEV;
- goto err_out_free_page;
- }
-
- printk(KERN_INFO "%s: %s %pM\n", dev->name, sgiseeqstr, dev->dev_addr);
-
- return 0;
-
-err_out_free_page:
- free_page((unsigned long) sp->srings);
-err_out_free_dev:
- free_netdev(dev);
-
-err_out:
- return err;
-}
-
-static int __exit sgiseeq_remove(struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct sgiseeq_private *sp = netdev_priv(dev);
-
- unregister_netdev(dev);
- dma_free_noncoherent(&pdev->dev, sizeof(*sp->srings), sp->srings,
- sp->srings_dma);
- free_netdev(dev);
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-static struct platform_driver sgiseeq_driver = {
- .probe = sgiseeq_probe,
- .remove = __exit_p(sgiseeq_remove),
- .driver = {
- .name = "sgiseeq",
- .owner = THIS_MODULE,
- }
-};
-
-static int __init sgiseeq_module_init(void)
-{
- if (platform_driver_register(&sgiseeq_driver)) {
- printk(KERN_ERR "Driver registration failed\n");
- return -ENODEV;
- }
-
- return 0;
-}
-
-static void __exit sgiseeq_module_exit(void)
-{
- platform_driver_unregister(&sgiseeq_driver);
-}
-
-module_init(sgiseeq_module_init);
-module_exit(sgiseeq_module_exit);
-
-MODULE_DESCRIPTION("SGI Seeq 8003 driver");
-MODULE_AUTHOR("Linux/MIPS Mailing List <linux-mips@linux-mips.org>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:sgiseeq");
+++ /dev/null
-/*
- * sgiseeq.h: Defines for the Seeq8003 ethernet controller.
- *
- * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
- */
-#ifndef _SGISEEQ_H
-#define _SGISEEQ_H
-
-struct sgiseeq_wregs {
- volatile unsigned int multicase_high[2];
- volatile unsigned int frame_gap;
- volatile unsigned int control;
-};
-
-struct sgiseeq_rregs {
- volatile unsigned int collision_tx[2];
- volatile unsigned int collision_all[2];
- volatile unsigned int _unused0;
- volatile unsigned int rflags;
-};
-
-struct sgiseeq_regs {
- union {
- volatile unsigned int eth_addr[6];
- volatile unsigned int multicast_low[6];
- struct sgiseeq_wregs wregs;
- struct sgiseeq_rregs rregs;
- } rw;
- volatile unsigned int rstat;
- volatile unsigned int tstat;
-};
-
-/* Seeq8003 receive status register */
-#define SEEQ_RSTAT_OVERF 0x001 /* Overflow */
-#define SEEQ_RSTAT_CERROR 0x002 /* CRC error */
-#define SEEQ_RSTAT_DERROR 0x004 /* Dribble error */
-#define SEEQ_RSTAT_SFRAME 0x008 /* Short frame */
-#define SEEQ_RSTAT_REOF 0x010 /* Received end of frame */
-#define SEEQ_RSTAT_FIG 0x020 /* Frame is good */
-#define SEEQ_RSTAT_TIMEO 0x040 /* Timeout, or late receive */
-#define SEEQ_RSTAT_WHICH 0x080 /* Which status, 1=old 0=new */
-#define SEEQ_RSTAT_LITTLE 0x100 /* DMA is done in little endian format */
-#define SEEQ_RSTAT_SDMA 0x200 /* DMA has started */
-#define SEEQ_RSTAT_ADMA 0x400 /* DMA is active */
-#define SEEQ_RSTAT_ROVERF 0x800 /* Receive buffer overflow */
-
-/* Seeq8003 receive command register */
-#define SEEQ_RCMD_RDISAB 0x000 /* Disable receiver on the Seeq8003 */
-#define SEEQ_RCMD_IOVERF 0x001 /* IRQ on buffer overflows */
-#define SEEQ_RCMD_ICRC 0x002 /* IRQ on CRC errors */
-#define SEEQ_RCMD_IDRIB 0x004 /* IRQ on dribble errors */
-#define SEEQ_RCMD_ISHORT 0x008 /* IRQ on short frames */
-#define SEEQ_RCMD_IEOF 0x010 /* IRQ on end of frame */
-#define SEEQ_RCMD_IGOOD 0x020 /* IRQ on good frames */
-#define SEEQ_RCMD_RANY 0x040 /* Receive any frame */
-#define SEEQ_RCMD_RBCAST 0x080 /* Receive broadcasts */
-#define SEEQ_RCMD_RBMCAST 0x0c0 /* Receive broadcasts/multicasts */
-
-/* Seeq8003 transmit status register */
-#define SEEQ_TSTAT_UFLOW 0x001 /* Transmit buffer underflow */
-#define SEEQ_TSTAT_CLS 0x002 /* Collision detected */
-#define SEEQ_TSTAT_R16 0x004 /* Did 16 retries to tx a frame */
-#define SEEQ_TSTAT_PTRANS 0x008 /* Packet was transmitted ok */
-#define SEEQ_TSTAT_LCLS 0x010 /* Late collision occurred */
-#define SEEQ_TSTAT_WHICH 0x080 /* Which status, 1=old 0=new */
-#define SEEQ_TSTAT_TLE 0x100 /* DMA is done in little endian format */
-#define SEEQ_TSTAT_SDMA 0x200 /* DMA has started */
-#define SEEQ_TSTAT_ADMA 0x400 /* DMA is active */
-
-/* Seeq8003 transmit command register */
-#define SEEQ_TCMD_RB0 0x00 /* Register bank zero w/station addr */
-#define SEEQ_TCMD_IUF 0x01 /* IRQ on tx underflow */
-#define SEEQ_TCMD_IC 0x02 /* IRQ on collisions */
-#define SEEQ_TCMD_I16 0x04 /* IRQ after 16 failed attempts to tx frame */
-#define SEEQ_TCMD_IPT 0x08 /* IRQ when packet successfully transmitted */
-#define SEEQ_TCMD_RB1 0x20 /* Register bank one w/multi-cast low byte */
-#define SEEQ_TCMD_RB2 0x40 /* Register bank two w/multi-cast high byte */
-
-/* Seeq8003 control register */
-#define SEEQ_CTRL_XCNT 0x01
-#define SEEQ_CTRL_ACCNT 0x02
-#define SEEQ_CTRL_SFLAG 0x04
-#define SEEQ_CTRL_EMULTI 0x08
-#define SEEQ_CTRL_ESHORT 0x10
-#define SEEQ_CTRL_ENCARR 0x20
-
-/* Seeq8003 control registers on the SGI Hollywood HPC. */
-#define SEEQ_HPIO_P1BITS 0x00000001 /* cycles to stay in P1 phase for PIO */
-#define SEEQ_HPIO_P2BITS 0x00000060 /* cycles to stay in P2 phase for PIO */
-#define SEEQ_HPIO_P3BITS 0x00000100 /* cycles to stay in P3 phase for PIO */
-#define SEEQ_HDMA_D1BITS 0x00000006 /* cycles to stay in D1 phase for DMA */
-#define SEEQ_HDMA_D2BITS 0x00000020 /* cycles to stay in D2 phase for DMA */
-#define SEEQ_HDMA_D3BITS 0x00000000 /* cycles to stay in D3 phase for DMA */
-#define SEEQ_HDMA_TIMEO 0x00030000 /* cycles for DMA timeout */
-#define SEEQ_HCTL_NORM 0x00000000 /* Normal operation mode */
-#define SEEQ_HCTL_RESET 0x00000001 /* Reset Seeq8003 and HPC interface */
-#define SEEQ_HCTL_IPEND 0x00000002 /* IRQ is pending for the chip */
-#define SEEQ_HCTL_IPG 0x00001000 /* Inter-packet gap */
-#define SEEQ_HCTL_RFIX 0x00002000 /* At rxdc, clear end-of-packet */
-#define SEEQ_HCTL_EFIX 0x00004000 /* fixes intr status bit settings */
-#define SEEQ_HCTL_IFIX 0x00008000 /* enable startup timeouts */
-
-#endif /* !(_SGISEEQ_H) */
projects / openwrt / staging / blogic.git / commitdiff