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894 lines
23 KiB
894 lines
23 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/drivers/acorn/net/ether3.c |
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* |
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* Copyright (C) 1995-2000 Russell King |
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* |
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* SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card |
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* for Acorn machines |
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* |
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* By Russell King, with some suggestions from [email protected] |
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* |
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* Changelog: |
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* 1.04 RMK 29/02/1996 Won't pass packets that are from our ethernet |
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* address up to the higher levels - they're |
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* silently ignored. I/F can now be put into |
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* multicast mode. Receiver routine optimised. |
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* 1.05 RMK 30/02/1996 Now claims interrupt at open when part of |
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* the kernel rather than when a module. |
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* 1.06 RMK 02/03/1996 Various code cleanups |
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* 1.07 RMK 13/10/1996 Optimised interrupt routine and transmit |
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* routines. |
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* 1.08 RMK 14/10/1996 Fixed problem with too many packets, |
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* prevented the kernel message about dropped |
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* packets appearing too many times a second. |
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* Now does not disable all IRQs, only the IRQ |
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* used by this card. |
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* 1.09 RMK 10/11/1996 Only enables TX irq when buffer space is low, |
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* but we still service the TX queue if we get a |
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* RX interrupt. |
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* 1.10 RMK 15/07/1997 Fixed autoprobing of NQ8004. |
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* 1.11 RMK 16/11/1997 Fixed autoprobing of NQ8005A. |
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* 1.12 RMK 31/12/1997 Removed reference to dev_tint for Linux 2.1. |
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* RMK 27/06/1998 Changed asm/delay.h to linux/delay.h. |
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* 1.13 RMK 29/06/1998 Fixed problem with transmission of packets. |
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* Chip seems to have a bug in, whereby if the |
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* packet starts two bytes from the end of the |
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* buffer, it corrupts the receiver chain, and |
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* never updates the transmit status correctly. |
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* 1.14 RMK 07/01/1998 Added initial code for ETHERB addressing. |
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* 1.15 RMK 30/04/1999 More fixes to the transmit routine for buggy |
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* hardware. |
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* 1.16 RMK 10/02/2000 Updated for 2.3.43 |
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* 1.17 RMK 13/05/2000 Updated for 2.3.99-pre8 |
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*/ |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/fcntl.h> |
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#include <linux/interrupt.h> |
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#include <linux/ioport.h> |
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#include <linux/in.h> |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <linux/errno.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/skbuff.h> |
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#include <linux/device.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/bitops.h> |
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|
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#include <asm/ecard.h> |
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#include <asm/io.h> |
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static char version[] = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n"; |
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#include "ether3.h" |
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static unsigned int net_debug = NET_DEBUG; |
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static void ether3_setmulticastlist(struct net_device *dev); |
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static int ether3_rx(struct net_device *dev, unsigned int maxcnt); |
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static void ether3_tx(struct net_device *dev); |
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static int ether3_open (struct net_device *dev); |
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static netdev_tx_t ether3_sendpacket(struct sk_buff *skb, |
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struct net_device *dev); |
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static irqreturn_t ether3_interrupt (int irq, void *dev_id); |
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static int ether3_close (struct net_device *dev); |
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static void ether3_setmulticastlist (struct net_device *dev); |
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static void ether3_timeout(struct net_device *dev, unsigned int txqueue); |
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#define BUS_16 2 |
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#define BUS_8 1 |
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#define BUS_UNKNOWN 0 |
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/* --------------------------------------------------------------------------- */ |
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typedef enum { |
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buffer_write, |
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buffer_read |
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} buffer_rw_t; |
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/* |
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* ether3 read/write. Slow things down a bit... |
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* The SEEQ8005 doesn't like us writing to its registers |
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* too quickly. |
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*/ |
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static inline void ether3_outb(int v, void __iomem *r) |
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{ |
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writeb(v, r); |
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udelay(1); |
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} |
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static inline void ether3_outw(int v, void __iomem *r) |
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{ |
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writew(v, r); |
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udelay(1); |
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} |
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#define ether3_inb(r) ({ unsigned int __v = readb((r)); udelay(1); __v; }) |
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#define ether3_inw(r) ({ unsigned int __v = readw((r)); udelay(1); __v; }) |
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static int |
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ether3_setbuffer(struct net_device *dev, buffer_rw_t read, int start) |
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{ |
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int timeout = 1000; |
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ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); |
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ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND); |
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while ((ether3_inw(REG_STATUS) & STAT_FIFOEMPTY) == 0) { |
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if (!timeout--) { |
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printk("%s: setbuffer broken\n", dev->name); |
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priv(dev)->broken = 1; |
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return 1; |
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} |
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udelay(1); |
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} |
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if (read == buffer_read) { |
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ether3_outw(start, REG_DMAADDR); |
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ether3_outw(priv(dev)->regs.command | CMD_FIFOREAD, REG_COMMAND); |
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} else { |
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ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND); |
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ether3_outw(start, REG_DMAADDR); |
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} |
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return 0; |
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} |
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/* |
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* write data to the buffer memory |
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*/ |
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#define ether3_writebuffer(dev,data,length) \ |
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writesw(REG_BUFWIN, (data), (length) >> 1) |
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#define ether3_writeword(dev,data) \ |
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writew((data), REG_BUFWIN) |
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#define ether3_writelong(dev,data) { \ |
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void __iomem *reg_bufwin = REG_BUFWIN; \ |
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writew((data), reg_bufwin); \ |
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writew((data) >> 16, reg_bufwin); \ |
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} |
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/* |
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* read data from the buffer memory |
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*/ |
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#define ether3_readbuffer(dev,data,length) \ |
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readsw(REG_BUFWIN, (data), (length) >> 1) |
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#define ether3_readword(dev) \ |
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readw(REG_BUFWIN) |
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#define ether3_readlong(dev) \ |
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readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16) |
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/* |
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* Switch LED off... |
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*/ |
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static void ether3_ledoff(struct timer_list *t) |
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{ |
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struct dev_priv *private = from_timer(private, t, timer); |
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struct net_device *dev = private->dev; |
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ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2); |
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} |
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/* |
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* switch LED on... |
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*/ |
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static inline void ether3_ledon(struct net_device *dev) |
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{ |
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del_timer(&priv(dev)->timer); |
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priv(dev)->timer.expires = jiffies + HZ / 50; /* leave on for 1/50th second */ |
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add_timer(&priv(dev)->timer); |
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if (priv(dev)->regs.config2 & CFG2_CTRLO) |
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ether3_outw(priv(dev)->regs.config2 &= ~CFG2_CTRLO, REG_CONFIG2); |
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} |
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/* |
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* Read the ethernet address string from the on board rom. |
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* This is an ascii string!!! |
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*/ |
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static int |
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ether3_addr(char *addr, struct expansion_card *ec) |
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{ |
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struct in_chunk_dir cd; |
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char *s; |
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if (ecard_readchunk(&cd, ec, 0xf5, 0) && (s = strchr(cd.d.string, '('))) { |
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int i; |
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for (i = 0; i<6; i++) { |
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addr[i] = simple_strtoul(s + 1, &s, 0x10); |
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if (*s != (i==5?')' : ':' )) |
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break; |
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} |
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if (i == 6) |
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return 0; |
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} |
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/* I wonder if we should even let the user continue in this case |
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* - no, it would be better to disable the device |
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*/ |
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printk(KERN_ERR "ether3: Couldn't read a valid MAC address from card.\n"); |
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return -ENODEV; |
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} |
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/* --------------------------------------------------------------------------- */ |
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static int |
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ether3_ramtest(struct net_device *dev, unsigned char byte) |
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{ |
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unsigned char *buffer = kmalloc(RX_END, GFP_KERNEL); |
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int i,ret = 0; |
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int max_errors = 4; |
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int bad = -1; |
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if (!buffer) |
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return 1; |
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memset(buffer, byte, RX_END); |
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ether3_setbuffer(dev, buffer_write, 0); |
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ether3_writebuffer(dev, buffer, TX_END); |
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ether3_setbuffer(dev, buffer_write, RX_START); |
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ether3_writebuffer(dev, buffer + RX_START, RX_LEN); |
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memset(buffer, byte ^ 0xff, RX_END); |
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ether3_setbuffer(dev, buffer_read, 0); |
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ether3_readbuffer(dev, buffer, TX_END); |
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ether3_setbuffer(dev, buffer_read, RX_START); |
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ether3_readbuffer(dev, buffer + RX_START, RX_LEN); |
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for (i = 0; i < RX_END; i++) { |
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if (buffer[i] != byte) { |
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if (max_errors > 0 && bad != buffer[i]) { |
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printk("%s: RAM failed with (%02X instead of %02X) at 0x%04X", |
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dev->name, buffer[i], byte, i); |
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ret = 2; |
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max_errors--; |
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bad = i; |
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} |
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} else { |
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if (bad != -1) { |
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if (bad != i - 1) |
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printk(" - 0x%04X\n", i - 1); |
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printk("\n"); |
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bad = -1; |
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} |
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} |
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} |
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if (bad != -1) |
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printk(" - 0xffff\n"); |
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kfree(buffer); |
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return ret; |
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} |
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/* ------------------------------------------------------------------------------- */ |
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static int ether3_init_2(struct net_device *dev) |
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{ |
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int i; |
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priv(dev)->regs.config1 = CFG1_RECVCOMPSTAT0|CFG1_DMABURST8; |
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priv(dev)->regs.config2 = CFG2_CTRLO|CFG2_RECVCRC|CFG2_ERRENCRC; |
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priv(dev)->regs.command = 0; |
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/* |
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* Set up our hardware address |
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*/ |
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ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1); |
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for (i = 0; i < 6; i++) |
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ether3_outb(dev->dev_addr[i], REG_BUFWIN); |
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if (dev->flags & IFF_PROMISC) |
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priv(dev)->regs.config1 |= CFG1_RECVPROMISC; |
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else if (dev->flags & IFF_MULTICAST) |
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priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI; |
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else |
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priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD; |
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/* |
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* There is a problem with the NQ8005 in that it occasionally loses the |
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* last two bytes. To get round this problem, we receive the CRC as |
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* well. That way, if we do lose the last two, then it doesn't matter. |
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*/ |
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ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1); |
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ether3_outw((TX_END>>8) - 1, REG_BUFWIN); |
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ether3_outw(priv(dev)->rx_head, REG_RECVPTR); |
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ether3_outw(0, REG_TRANSMITPTR); |
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ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND); |
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ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); |
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ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); |
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ether3_outw(priv(dev)->regs.command, REG_COMMAND); |
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i = ether3_ramtest(dev, 0x5A); |
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if(i) |
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return i; |
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i = ether3_ramtest(dev, 0x1E); |
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if(i) |
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return i; |
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ether3_setbuffer(dev, buffer_write, 0); |
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ether3_writelong(dev, 0); |
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return 0; |
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} |
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static void |
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ether3_init_for_open(struct net_device *dev) |
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{ |
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int i; |
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/* Reset the chip */ |
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ether3_outw(CFG2_RESET, REG_CONFIG2); |
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udelay(4); |
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priv(dev)->regs.command = 0; |
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ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND); |
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while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON)) |
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barrier(); |
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ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1); |
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for (i = 0; i < 6; i++) |
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ether3_outb(dev->dev_addr[i], REG_BUFWIN); |
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priv(dev)->tx_head = 0; |
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priv(dev)->tx_tail = 0; |
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priv(dev)->regs.config2 |= CFG2_CTRLO; |
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priv(dev)->rx_head = RX_START; |
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ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1); |
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ether3_outw((TX_END>>8) - 1, REG_BUFWIN); |
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ether3_outw(priv(dev)->rx_head, REG_RECVPTR); |
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ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND); |
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ether3_outw(0, REG_TRANSMITPTR); |
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ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); |
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ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); |
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ether3_setbuffer(dev, buffer_write, 0); |
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ether3_writelong(dev, 0); |
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priv(dev)->regs.command = CMD_ENINTRX | CMD_ENINTTX; |
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ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND); |
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} |
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static inline int |
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ether3_probe_bus_8(struct net_device *dev, int val) |
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{ |
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int write_low, write_high, read_low, read_high; |
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write_low = val & 255; |
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write_high = val >> 8; |
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printk(KERN_DEBUG "ether3_probe: write8 [%02X:%02X]", write_high, write_low); |
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ether3_outb(write_low, REG_RECVPTR); |
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ether3_outb(write_high, REG_RECVPTR + 4); |
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read_low = ether3_inb(REG_RECVPTR); |
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read_high = ether3_inb(REG_RECVPTR + 4); |
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printk(", read8 [%02X:%02X]\n", read_high, read_low); |
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return read_low == write_low && read_high == write_high; |
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} |
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static inline int |
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ether3_probe_bus_16(struct net_device *dev, int val) |
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{ |
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int read_val; |
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ether3_outw(val, REG_RECVPTR); |
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read_val = ether3_inw(REG_RECVPTR); |
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printk(KERN_DEBUG "ether3_probe: write16 [%04X], read16 [%04X]\n", val, read_val); |
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return read_val == val; |
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} |
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/* |
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* Open/initialize the board. This is called (in the current kernel) |
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* sometime after booting when the 'ifconfig' program is run. |
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* |
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* This routine should set everything up anew at each open, even |
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* registers that "should" only need to be set once at boot, so that |
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* there is non-reboot way to recover if something goes wrong. |
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*/ |
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static int |
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ether3_open(struct net_device *dev) |
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{ |
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if (request_irq(dev->irq, ether3_interrupt, 0, "ether3", dev)) |
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return -EAGAIN; |
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ether3_init_for_open(dev); |
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netif_start_queue(dev); |
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return 0; |
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} |
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/* |
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* The inverse routine to ether3_open(). |
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*/ |
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static int |
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ether3_close(struct net_device *dev) |
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{ |
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netif_stop_queue(dev); |
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disable_irq(dev->irq); |
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ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND); |
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priv(dev)->regs.command = 0; |
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while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON)) |
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barrier(); |
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ether3_outb(0x80, REG_CONFIG2 + 4); |
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ether3_outw(0, REG_COMMAND); |
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free_irq(dev->irq, dev); |
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return 0; |
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} |
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/* |
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* Set or clear promiscuous/multicast mode filter for this adaptor. |
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* |
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* We don't attempt any packet filtering. The card may have a SEEQ 8004 |
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* in which does not have the other ethernet address registers present... |
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*/ |
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static void ether3_setmulticastlist(struct net_device *dev) |
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{ |
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priv(dev)->regs.config1 &= ~CFG1_RECVPROMISC; |
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if (dev->flags & IFF_PROMISC) { |
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/* promiscuous mode */ |
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priv(dev)->regs.config1 |= CFG1_RECVPROMISC; |
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} else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) { |
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priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI; |
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} else |
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priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD; |
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ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); |
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} |
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static void ether3_timeout(struct net_device *dev, unsigned int txqueue) |
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{ |
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unsigned long flags; |
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del_timer(&priv(dev)->timer); |
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local_irq_save(flags); |
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printk(KERN_ERR "%s: transmit timed out, network cable problem?\n", dev->name); |
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printk(KERN_ERR "%s: state: { status=%04X cfg1=%04X cfg2=%04X }\n", dev->name, |
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ether3_inw(REG_STATUS), ether3_inw(REG_CONFIG1), ether3_inw(REG_CONFIG2)); |
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printk(KERN_ERR "%s: { rpr=%04X rea=%04X tpr=%04X }\n", dev->name, |
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ether3_inw(REG_RECVPTR), ether3_inw(REG_RECVEND), ether3_inw(REG_TRANSMITPTR)); |
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printk(KERN_ERR "%s: tx head=%X tx tail=%X\n", dev->name, |
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priv(dev)->tx_head, priv(dev)->tx_tail); |
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ether3_setbuffer(dev, buffer_read, priv(dev)->tx_tail); |
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printk(KERN_ERR "%s: packet status = %08X\n", dev->name, ether3_readlong(dev)); |
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local_irq_restore(flags); |
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priv(dev)->regs.config2 |= CFG2_CTRLO; |
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dev->stats.tx_errors += 1; |
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ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); |
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priv(dev)->tx_head = priv(dev)->tx_tail = 0; |
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netif_wake_queue(dev); |
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} |
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/* |
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* Transmit a packet |
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*/ |
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static netdev_tx_t |
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ether3_sendpacket(struct sk_buff *skb, struct net_device *dev) |
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{ |
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unsigned long flags; |
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unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; |
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unsigned int ptr, next_ptr; |
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|
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if (priv(dev)->broken) { |
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dev_kfree_skb(skb); |
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dev->stats.tx_dropped++; |
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netif_start_queue(dev); |
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return NETDEV_TX_OK; |
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} |
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length = (length + 1) & ~1; |
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if (length != skb->len) { |
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if (skb_padto(skb, length)) |
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goto out; |
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} |
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next_ptr = (priv(dev)->tx_head + 1) & 15; |
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local_irq_save(flags); |
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if (priv(dev)->tx_tail == next_ptr) { |
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local_irq_restore(flags); |
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return NETDEV_TX_BUSY; /* unable to queue */ |
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} |
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ptr = 0x600 * priv(dev)->tx_head; |
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priv(dev)->tx_head = next_ptr; |
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next_ptr *= 0x600; |
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|
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#define TXHDR_FLAGS (TXHDR_TRANSMIT|TXHDR_CHAINCONTINUE|TXHDR_DATAFOLLOWS|TXHDR_ENSUCCESS) |
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ether3_setbuffer(dev, buffer_write, next_ptr); |
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ether3_writelong(dev, 0); |
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ether3_setbuffer(dev, buffer_write, ptr); |
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ether3_writelong(dev, 0); |
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ether3_writebuffer(dev, skb->data, length); |
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ether3_writeword(dev, htons(next_ptr)); |
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ether3_writeword(dev, TXHDR_CHAINCONTINUE >> 16); |
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ether3_setbuffer(dev, buffer_write, ptr); |
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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) { |
|
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); |
|
printk("%pM %pM\n", addrs + 2, addrs + 8); |
|
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 = netdev_alloc_skb(dev, 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 { |
|
ether3_outw(next_ptr >> 8, REG_RECVEND); |
|
dev->stats.rx_dropped++; |
|
goto done; |
|
} |
|
} 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; |
|
} |
|
|
|
/* |
|
* 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 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_rx_mode = ether3_setmulticastlist, |
|
.ndo_tx_timeout = ether3_timeout, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_mac_address = eth_mac_addr, |
|
}; |
|
|
|
static int |
|
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); |
|
|
|
priv(dev)->dev = dev; |
|
timer_setup(&priv(dev)->timer, ether3_ledoff, 0); |
|
|
|
/* 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 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 = 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");
|
|
|