diff options
Diffstat (limited to 'drivers/net/arm/ether3.c')
| -rw-r--r-- | drivers/net/arm/ether3.c | 918 |
1 files changed, 0 insertions, 918 deletions
diff --git a/drivers/net/arm/ether3.c b/drivers/net/arm/ether3.c deleted file mode 100644 index 44a8746..0000000 --- a/drivers/net/arm/ether3.c +++ /dev/null @@ -1,918 +0,0 @@ -/* - * 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"); |
