Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
936
drivers/net/arm/ether3.c
Normal file
936
drivers/net/arm/ether3.c
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@@ -0,0 +1,936 @@
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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 borris@ant.co.uk
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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/sched.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/ptrace.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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#include <asm/system.h>
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#include <asm/ecard.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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static char version[] __initdata = "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 int ether3_sendpacket (struct sk_buff *skb, struct net_device *dev);
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static irqreturn_t ether3_interrupt (int irq, void *dev_id, struct pt_regs *regs);
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static int ether3_close (struct net_device *dev);
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static struct net_device_stats *ether3_getstats (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);
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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, const 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, const 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(unsigned long data)
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{
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struct net_device *dev = (struct net_device *)data;
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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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priv(dev)->timer.data = (unsigned long)dev;
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priv(dev)->timer.function = ether3_ledoff;
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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 __init
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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 __init
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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 __init 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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memset(&priv(dev)->stats, 0, sizeof(struct net_device_stats));
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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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|
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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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{
|
||||
int write_low, write_high, read_low, read_high;
|
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|
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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);
|
||||
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;
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
/*
|
||||
* Get the current statistics. This may be called with the card open or
|
||||
* closed.
|
||||
*/
|
||||
static struct net_device_stats *ether3_getstats(struct net_device *dev)
|
||||
{
|
||||
return &priv(dev)->stats;
|
||||
}
|
||||
|
||||
/*
|
||||
* 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) {
|
||||
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;
|
||||
priv(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);
|
||||
priv(dev)->stats.tx_dropped ++;
|
||||
netif_start_queue(dev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
length = (length + 1) & ~1;
|
||||
if (length != skb->len) {
|
||||
skb = skb_padto(skb, length);
|
||||
if (skb == NULL)
|
||||
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 1; /* unable to queue */
|
||||
}
|
||||
|
||||
dev->trans_start = jiffies;
|
||||
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 0;
|
||||
}
|
||||
|
||||
static irqreturn_t
|
||||
ether3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
||||
{
|
||||
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->dev = dev;
|
||||
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 = &priv(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:
|
||||
priv(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)) {
|
||||
priv(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);
|
||||
}
|
||||
priv(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)))
|
||||
priv(dev)->stats.tx_packets++;
|
||||
else {
|
||||
priv(dev)->stats.tx_errors ++;
|
||||
if (status & TXSTAT_16COLLISIONS)
|
||||
priv(dev)->stats.collisions += 16;
|
||||
if (status & TXSTAT_BABBLED)
|
||||
priv(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 __init ether3_banner(void)
|
||||
{
|
||||
static unsigned version_printed = 0;
|
||||
|
||||
if (net_debug && version_printed++ == 0)
|
||||
printk(KERN_INFO "%s", version);
|
||||
}
|
||||
|
||||
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 i, 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_MODULE_OWNER(dev);
|
||||
SET_NETDEV_DEV(dev, &ec->dev);
|
||||
|
||||
priv(dev)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
|
||||
ecard_resource_len(ec, ECARD_RES_MEMC));
|
||||
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->open = ether3_open;
|
||||
dev->stop = ether3_close;
|
||||
dev->hard_start_xmit = ether3_sendpacket;
|
||||
dev->get_stats = ether3_getstats;
|
||||
dev->set_multicast_list = ether3_setmulticastlist;
|
||||
dev->tx_timeout = ether3_timeout;
|
||||
dev->watchdog_timeo = 5 * HZ / 100;
|
||||
|
||||
ret = register_netdev(dev);
|
||||
if (ret)
|
||||
goto free;
|
||||
|
||||
printk("%s: %s in slot %d, ", dev->name, data->name, ec->slot_no);
|
||||
for (i = 0; i < 6; i++)
|
||||
printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':');
|
||||
|
||||
ecard_set_drvdata(ec, dev);
|
||||
return 0;
|
||||
|
||||
free:
|
||||
if (priv(dev)->base)
|
||||
iounmap(priv(dev)->base);
|
||||
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);
|
||||
iounmap(priv(dev)->base);
|
||||
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");
|
||||
Reference in New Issue
Block a user