779 lines
18 KiB
C
779 lines
18 KiB
C
/*
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* linux/drivers/net/am79c961.c
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*
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* by Russell King <rmk@arm.linux.org.uk> 1995-2001.
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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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* Derived from various things including skeleton.c
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*
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* This is a special driver for the am79c961A Lance chip used in the
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* Intel (formally Digital Equipment Corp) EBSA110 platform. Please
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* note that this can not be built as a module (it doesn't make sense).
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.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/delay.h>
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#include <linux/init.h>
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#include <linux/crc32.h>
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#include <linux/bitops.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <asm/system.h>
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#define TX_BUFFERS 15
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#define RX_BUFFERS 25
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#include "am79c961a.h"
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static irqreturn_t
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am79c961_interrupt (int irq, void *dev_id);
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static unsigned int net_debug = NET_DEBUG;
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static const char version[] =
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"am79c961 ethernet driver (C) 1995-2001 Russell King v0.04\n";
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/* --------------------------------------------------------------------------- */
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#ifdef __arm__
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static void write_rreg(u_long base, u_int reg, u_int val)
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{
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__asm__(
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"str%?h %1, [%2] @ NET_RAP\n\t"
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"str%?h %0, [%2, #-4] @ NET_RDP"
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:
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: "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464));
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}
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static inline unsigned short read_rreg(u_long base_addr, u_int reg)
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{
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unsigned short v;
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__asm__(
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"str%?h %1, [%2] @ NET_RAP\n\t"
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"ldr%?h %0, [%2, #-4] @ NET_RDP"
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: "=r" (v)
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: "r" (reg), "r" (ISAIO_BASE + 0x0464));
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return v;
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}
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static inline void write_ireg(u_long base, u_int reg, u_int val)
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{
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__asm__(
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"str%?h %1, [%2] @ NET_RAP\n\t"
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"str%?h %0, [%2, #8] @ NET_IDP"
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:
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: "r" (val), "r" (reg), "r" (ISAIO_BASE + 0x0464));
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}
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static inline unsigned short read_ireg(u_long base_addr, u_int reg)
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{
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u_short v;
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__asm__(
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"str%?h %1, [%2] @ NAT_RAP\n\t"
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"ldr%?h %0, [%2, #8] @ NET_IDP\n\t"
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: "=r" (v)
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: "r" (reg), "r" (ISAIO_BASE + 0x0464));
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return v;
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}
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#define am_writeword(dev,off,val) __raw_writew(val, ISAMEM_BASE + ((off) << 1))
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#define am_readword(dev,off) __raw_readw(ISAMEM_BASE + ((off) << 1))
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static inline void
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am_writebuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length)
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{
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offset = ISAMEM_BASE + (offset << 1);
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length = (length + 1) & ~1;
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if ((int)buf & 2) {
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__asm__ __volatile__("str%?h %2, [%0], #4"
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: "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8)));
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buf += 2;
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length -= 2;
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}
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while (length > 8) {
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unsigned int tmp, tmp2;
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__asm__ __volatile__(
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"ldm%?ia %1!, {%2, %3}\n\t"
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"str%?h %2, [%0], #4\n\t"
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"mov%? %2, %2, lsr #16\n\t"
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"str%?h %2, [%0], #4\n\t"
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"str%?h %3, [%0], #4\n\t"
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"mov%? %3, %3, lsr #16\n\t"
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"str%?h %3, [%0], #4"
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: "=&r" (offset), "=&r" (buf), "=r" (tmp), "=r" (tmp2)
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: "0" (offset), "1" (buf));
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length -= 8;
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}
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while (length > 0) {
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__asm__ __volatile__("str%?h %2, [%0], #4"
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: "=&r" (offset) : "0" (offset), "r" (buf[0] | (buf[1] << 8)));
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buf += 2;
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length -= 2;
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}
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}
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static inline void
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am_readbuffer(struct net_device *dev, u_int offset, unsigned char *buf, unsigned int length)
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{
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offset = ISAMEM_BASE + (offset << 1);
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length = (length + 1) & ~1;
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if ((int)buf & 2) {
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unsigned int tmp;
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__asm__ __volatile__(
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"ldr%?h %2, [%0], #4\n\t"
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"str%?b %2, [%1], #1\n\t"
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"mov%? %2, %2, lsr #8\n\t"
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"str%?b %2, [%1], #1"
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: "=&r" (offset), "=&r" (buf), "=r" (tmp): "0" (offset), "1" (buf));
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length -= 2;
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}
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while (length > 8) {
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unsigned int tmp, tmp2, tmp3;
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__asm__ __volatile__(
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"ldr%?h %2, [%0], #4\n\t"
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"ldr%?h %3, [%0], #4\n\t"
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"orr%? %2, %2, %3, lsl #16\n\t"
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"ldr%?h %3, [%0], #4\n\t"
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"ldr%?h %4, [%0], #4\n\t"
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"orr%? %3, %3, %4, lsl #16\n\t"
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"stm%?ia %1!, {%2, %3}"
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: "=&r" (offset), "=&r" (buf), "=r" (tmp), "=r" (tmp2), "=r" (tmp3)
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: "0" (offset), "1" (buf));
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length -= 8;
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}
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while (length > 0) {
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unsigned int tmp;
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__asm__ __volatile__(
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"ldr%?h %2, [%0], #4\n\t"
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"str%?b %2, [%1], #1\n\t"
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"mov%? %2, %2, lsr #8\n\t"
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"str%?b %2, [%1], #1"
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: "=&r" (offset), "=&r" (buf), "=r" (tmp) : "0" (offset), "1" (buf));
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length -= 2;
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}
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}
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#else
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#error Not compatible
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#endif
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static int
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am79c961_ramtest(struct net_device *dev, unsigned int val)
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{
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unsigned char *buffer = kmalloc (65536, GFP_KERNEL);
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int i, error = 0, errorcount = 0;
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if (!buffer)
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return 0;
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memset (buffer, val, 65536);
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am_writebuffer(dev, 0, buffer, 65536);
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memset (buffer, val ^ 255, 65536);
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am_readbuffer(dev, 0, buffer, 65536);
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for (i = 0; i < 65536; i++) {
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if (buffer[i] != val && !error) {
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printk ("%s: buffer error (%02X %02X) %05X - ", dev->name, val, buffer[i], i);
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error = 1;
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errorcount ++;
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} else if (error && buffer[i] == val) {
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printk ("%05X\n", i);
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error = 0;
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}
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}
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if (error)
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printk ("10000\n");
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kfree (buffer);
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return errorcount;
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}
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static void
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am79c961_init_for_open(struct net_device *dev)
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{
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struct dev_priv *priv = netdev_priv(dev);
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unsigned long flags;
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unsigned char *p;
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u_int hdr_addr, first_free_addr;
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int i;
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/*
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* Stop the chip.
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*/
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spin_lock_irqsave(&priv->chip_lock, flags);
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write_rreg (dev->base_addr, CSR0, CSR0_BABL|CSR0_CERR|CSR0_MISS|CSR0_MERR|CSR0_TINT|CSR0_RINT|CSR0_STOP);
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spin_unlock_irqrestore(&priv->chip_lock, flags);
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write_ireg (dev->base_addr, 5, 0x00a0); /* Receive address LED */
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write_ireg (dev->base_addr, 6, 0x0081); /* Collision LED */
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write_ireg (dev->base_addr, 7, 0x0090); /* XMIT LED */
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write_ireg (dev->base_addr, 2, 0x0000); /* MODE register selects media */
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for (i = LADRL; i <= LADRH; i++)
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write_rreg (dev->base_addr, i, 0);
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for (i = PADRL, p = dev->dev_addr; i <= PADRH; i++, p += 2)
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write_rreg (dev->base_addr, i, p[0] | (p[1] << 8));
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i = MODE_PORT_10BT;
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if (dev->flags & IFF_PROMISC)
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i |= MODE_PROMISC;
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write_rreg (dev->base_addr, MODE, i);
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write_rreg (dev->base_addr, POLLINT, 0);
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write_rreg (dev->base_addr, SIZERXR, -RX_BUFFERS);
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write_rreg (dev->base_addr, SIZETXR, -TX_BUFFERS);
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first_free_addr = RX_BUFFERS * 8 + TX_BUFFERS * 8 + 16;
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hdr_addr = 0;
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priv->rxhead = 0;
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priv->rxtail = 0;
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priv->rxhdr = hdr_addr;
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for (i = 0; i < RX_BUFFERS; i++) {
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priv->rxbuffer[i] = first_free_addr;
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am_writeword (dev, hdr_addr, first_free_addr);
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am_writeword (dev, hdr_addr + 2, RMD_OWN);
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am_writeword (dev, hdr_addr + 4, (-1600));
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am_writeword (dev, hdr_addr + 6, 0);
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first_free_addr += 1600;
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hdr_addr += 8;
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}
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priv->txhead = 0;
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priv->txtail = 0;
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priv->txhdr = hdr_addr;
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for (i = 0; i < TX_BUFFERS; i++) {
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priv->txbuffer[i] = first_free_addr;
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am_writeword (dev, hdr_addr, first_free_addr);
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am_writeword (dev, hdr_addr + 2, TMD_STP|TMD_ENP);
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am_writeword (dev, hdr_addr + 4, 0xf000);
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am_writeword (dev, hdr_addr + 6, 0);
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first_free_addr += 1600;
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hdr_addr += 8;
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}
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write_rreg (dev->base_addr, BASERXL, priv->rxhdr);
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write_rreg (dev->base_addr, BASERXH, 0);
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write_rreg (dev->base_addr, BASETXL, priv->txhdr);
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write_rreg (dev->base_addr, BASERXH, 0);
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write_rreg (dev->base_addr, CSR0, CSR0_STOP);
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write_rreg (dev->base_addr, CSR3, CSR3_IDONM|CSR3_BABLM|CSR3_DXSUFLO);
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write_rreg (dev->base_addr, CSR4, CSR4_APAD_XMIT|CSR4_MFCOM|CSR4_RCVCCOM|CSR4_TXSTRTM|CSR4_JABM);
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write_rreg (dev->base_addr, CSR0, CSR0_IENA|CSR0_STRT);
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}
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static void am79c961_timer(unsigned long data)
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{
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struct net_device *dev = (struct net_device *)data;
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struct dev_priv *priv = netdev_priv(dev);
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unsigned int lnkstat, carrier;
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lnkstat = read_ireg(dev->base_addr, ISALED0) & ISALED0_LNKST;
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carrier = netif_carrier_ok(dev);
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if (lnkstat && !carrier) {
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netif_carrier_on(dev);
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printk("%s: link up\n", dev->name);
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} else if (!lnkstat && carrier) {
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netif_carrier_off(dev);
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printk("%s: link down\n", dev->name);
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}
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mod_timer(&priv->timer, jiffies + msecs_to_jiffies(500));
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}
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/*
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* Open/initialize the board.
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*/
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static int
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am79c961_open(struct net_device *dev)
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{
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struct dev_priv *priv = netdev_priv(dev);
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int ret;
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memset (&priv->stats, 0, sizeof (priv->stats));
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ret = request_irq(dev->irq, am79c961_interrupt, 0, dev->name, dev);
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if (ret)
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return ret;
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am79c961_init_for_open(dev);
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netif_carrier_off(dev);
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priv->timer.expires = jiffies;
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add_timer(&priv->timer);
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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 am79c961_open().
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*/
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static int
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am79c961_close(struct net_device *dev)
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{
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struct dev_priv *priv = netdev_priv(dev);
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unsigned long flags;
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del_timer_sync(&priv->timer);
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netif_stop_queue(dev);
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netif_carrier_off(dev);
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spin_lock_irqsave(&priv->chip_lock, flags);
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write_rreg (dev->base_addr, CSR0, CSR0_STOP);
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write_rreg (dev->base_addr, CSR3, CSR3_MASKALL);
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spin_unlock_irqrestore(&priv->chip_lock, flags);
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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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* Get the current statistics.
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*/
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static struct net_device_stats *am79c961_getstats (struct net_device *dev)
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{
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struct dev_priv *priv = netdev_priv(dev);
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return &priv->stats;
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}
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static void am79c961_mc_hash(struct dev_mc_list *dmi, unsigned short *hash)
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{
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if (dmi->dmi_addrlen == ETH_ALEN && dmi->dmi_addr[0] & 0x01) {
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int idx, bit;
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u32 crc;
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crc = ether_crc_le(ETH_ALEN, dmi->dmi_addr);
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idx = crc >> 30;
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bit = (crc >> 26) & 15;
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hash[idx] |= 1 << bit;
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}
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}
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/*
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* Set or clear promiscuous/multicast mode filter for this adapter.
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*/
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static void am79c961_setmulticastlist (struct net_device *dev)
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{
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struct dev_priv *priv = netdev_priv(dev);
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unsigned long flags;
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unsigned short multi_hash[4], mode;
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int i, stopped;
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mode = MODE_PORT_10BT;
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if (dev->flags & IFF_PROMISC) {
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mode |= MODE_PROMISC;
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} else if (dev->flags & IFF_ALLMULTI) {
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memset(multi_hash, 0xff, sizeof(multi_hash));
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} else {
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struct dev_mc_list *dmi;
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memset(multi_hash, 0x00, sizeof(multi_hash));
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for (dmi = dev->mc_list; dmi; dmi = dmi->next)
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am79c961_mc_hash(dmi, multi_hash);
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}
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spin_lock_irqsave(&priv->chip_lock, flags);
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stopped = read_rreg(dev->base_addr, CSR0) & CSR0_STOP;
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if (!stopped) {
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/*
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* Put the chip into suspend mode
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*/
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write_rreg(dev->base_addr, CTRL1, CTRL1_SPND);
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/*
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* Spin waiting for chip to report suspend mode
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*/
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while ((read_rreg(dev->base_addr, CTRL1) & CTRL1_SPND) == 0) {
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spin_unlock_irqrestore(&priv->chip_lock, flags);
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nop();
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spin_lock_irqsave(&priv->chip_lock, flags);
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}
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}
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/*
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* Update the multicast hash table
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*/
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for (i = 0; i < ARRAY_SIZE(multi_hash); i++)
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write_rreg(dev->base_addr, i + LADRL, multi_hash[i]);
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/*
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* Write the mode register
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*/
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write_rreg(dev->base_addr, MODE, mode);
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if (!stopped) {
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/*
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* Put the chip back into running mode
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*/
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write_rreg(dev->base_addr, CTRL1, 0);
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}
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spin_unlock_irqrestore(&priv->chip_lock, flags);
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}
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static void am79c961_timeout(struct net_device *dev)
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{
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printk(KERN_WARNING "%s: transmit timed out, network cable problem?\n",
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dev->name);
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/*
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* ought to do some setup of the tx side here
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*/
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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 int
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am79c961_sendpacket(struct sk_buff *skb, struct net_device *dev)
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{
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struct dev_priv *priv = netdev_priv(dev);
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unsigned int hdraddr, bufaddr;
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unsigned int head;
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unsigned long flags;
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head = priv->txhead;
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hdraddr = priv->txhdr + (head << 3);
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bufaddr = priv->txbuffer[head];
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head += 1;
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if (head >= TX_BUFFERS)
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head = 0;
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am_writebuffer (dev, bufaddr, skb->data, skb->len);
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am_writeword (dev, hdraddr + 4, -skb->len);
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am_writeword (dev, hdraddr + 2, TMD_OWN|TMD_STP|TMD_ENP);
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priv->txhead = head;
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spin_lock_irqsave(&priv->chip_lock, flags);
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write_rreg (dev->base_addr, CSR0, CSR0_TDMD|CSR0_IENA);
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dev->trans_start = jiffies;
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spin_unlock_irqrestore(&priv->chip_lock, flags);
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/*
|
|
* If the next packet is owned by the ethernet device,
|
|
* then the tx ring is full and we can't add another
|
|
* packet.
|
|
*/
|
|
if (am_readword(dev, priv->txhdr + (priv->txhead << 3) + 2) & TMD_OWN)
|
|
netif_stop_queue(dev);
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If we have a good packet(s), get it/them out of the buffers.
|
|
*/
|
|
static void
|
|
am79c961_rx(struct net_device *dev, struct dev_priv *priv)
|
|
{
|
|
do {
|
|
struct sk_buff *skb;
|
|
u_int hdraddr;
|
|
u_int pktaddr;
|
|
u_int status;
|
|
int len;
|
|
|
|
hdraddr = priv->rxhdr + (priv->rxtail << 3);
|
|
pktaddr = priv->rxbuffer[priv->rxtail];
|
|
|
|
status = am_readword (dev, hdraddr + 2);
|
|
if (status & RMD_OWN) /* do we own it? */
|
|
break;
|
|
|
|
priv->rxtail ++;
|
|
if (priv->rxtail >= RX_BUFFERS)
|
|
priv->rxtail = 0;
|
|
|
|
if ((status & (RMD_ERR|RMD_STP|RMD_ENP)) != (RMD_STP|RMD_ENP)) {
|
|
am_writeword (dev, hdraddr + 2, RMD_OWN);
|
|
priv->stats.rx_errors ++;
|
|
if (status & RMD_ERR) {
|
|
if (status & RMD_FRAM)
|
|
priv->stats.rx_frame_errors ++;
|
|
if (status & RMD_CRC)
|
|
priv->stats.rx_crc_errors ++;
|
|
} else if (status & RMD_STP)
|
|
priv->stats.rx_length_errors ++;
|
|
continue;
|
|
}
|
|
|
|
len = am_readword(dev, hdraddr + 6);
|
|
skb = dev_alloc_skb(len + 2);
|
|
|
|
if (skb) {
|
|
skb_reserve(skb, 2);
|
|
|
|
am_readbuffer(dev, pktaddr, skb_put(skb, len), len);
|
|
am_writeword(dev, hdraddr + 2, RMD_OWN);
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
netif_rx(skb);
|
|
priv->stats.rx_bytes += len;
|
|
priv->stats.rx_packets ++;
|
|
} else {
|
|
am_writeword (dev, hdraddr + 2, RMD_OWN);
|
|
printk (KERN_WARNING "%s: memory squeeze, dropping packet.\n", dev->name);
|
|
priv->stats.rx_dropped ++;
|
|
break;
|
|
}
|
|
} while (1);
|
|
}
|
|
|
|
/*
|
|
* Update stats for the transmitted packet
|
|
*/
|
|
static void
|
|
am79c961_tx(struct net_device *dev, struct dev_priv *priv)
|
|
{
|
|
do {
|
|
short len;
|
|
u_int hdraddr;
|
|
u_int status;
|
|
|
|
hdraddr = priv->txhdr + (priv->txtail << 3);
|
|
status = am_readword (dev, hdraddr + 2);
|
|
if (status & TMD_OWN)
|
|
break;
|
|
|
|
priv->txtail ++;
|
|
if (priv->txtail >= TX_BUFFERS)
|
|
priv->txtail = 0;
|
|
|
|
if (status & TMD_ERR) {
|
|
u_int status2;
|
|
|
|
priv->stats.tx_errors ++;
|
|
|
|
status2 = am_readword (dev, hdraddr + 6);
|
|
|
|
/*
|
|
* Clear the error byte
|
|
*/
|
|
am_writeword (dev, hdraddr + 6, 0);
|
|
|
|
if (status2 & TST_RTRY)
|
|
priv->stats.collisions += 16;
|
|
if (status2 & TST_LCOL)
|
|
priv->stats.tx_window_errors ++;
|
|
if (status2 & TST_LCAR)
|
|
priv->stats.tx_carrier_errors ++;
|
|
if (status2 & TST_UFLO)
|
|
priv->stats.tx_fifo_errors ++;
|
|
continue;
|
|
}
|
|
priv->stats.tx_packets ++;
|
|
len = am_readword (dev, hdraddr + 4);
|
|
priv->stats.tx_bytes += -len;
|
|
} while (priv->txtail != priv->txhead);
|
|
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
static irqreturn_t
|
|
am79c961_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = (struct net_device *)dev_id;
|
|
struct dev_priv *priv = netdev_priv(dev);
|
|
u_int status, n = 100;
|
|
int handled = 0;
|
|
|
|
do {
|
|
status = read_rreg(dev->base_addr, CSR0);
|
|
write_rreg(dev->base_addr, CSR0, status &
|
|
(CSR0_IENA|CSR0_TINT|CSR0_RINT|
|
|
CSR0_MERR|CSR0_MISS|CSR0_CERR|CSR0_BABL));
|
|
|
|
if (status & CSR0_RINT) {
|
|
handled = 1;
|
|
am79c961_rx(dev, priv);
|
|
}
|
|
if (status & CSR0_TINT) {
|
|
handled = 1;
|
|
am79c961_tx(dev, priv);
|
|
}
|
|
if (status & CSR0_MISS) {
|
|
handled = 1;
|
|
priv->stats.rx_dropped ++;
|
|
}
|
|
if (status & CSR0_CERR) {
|
|
handled = 1;
|
|
mod_timer(&priv->timer, jiffies);
|
|
}
|
|
} while (--n && status & (CSR0_RINT | CSR0_TINT));
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void am79c961_poll_controller(struct net_device *dev)
|
|
{
|
|
unsigned long flags;
|
|
local_irq_save(flags);
|
|
am79c961_interrupt(dev->irq, dev);
|
|
local_irq_restore(flags);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Initialise the chip. Note that we always expect
|
|
* to be entered with interrupts enabled.
|
|
*/
|
|
static int
|
|
am79c961_hw_init(struct net_device *dev)
|
|
{
|
|
struct dev_priv *priv = netdev_priv(dev);
|
|
|
|
spin_lock_irq(&priv->chip_lock);
|
|
write_rreg (dev->base_addr, CSR0, CSR0_STOP);
|
|
write_rreg (dev->base_addr, CSR3, CSR3_MASKALL);
|
|
spin_unlock_irq(&priv->chip_lock);
|
|
|
|
am79c961_ramtest(dev, 0x66);
|
|
am79c961_ramtest(dev, 0x99);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __init am79c961_banner(void)
|
|
{
|
|
static unsigned version_printed;
|
|
|
|
if (net_debug && version_printed++ == 0)
|
|
printk(KERN_INFO "%s", version);
|
|
}
|
|
static const struct net_device_ops am79c961_netdev_ops = {
|
|
.ndo_open = am79c961_open,
|
|
.ndo_stop = am79c961_close,
|
|
.ndo_start_xmit = am79c961_sendpacket,
|
|
.ndo_get_stats = am79c961_getstats,
|
|
.ndo_set_multicast_list = am79c961_setmulticastlist,
|
|
.ndo_tx_timeout = am79c961_timeout,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_change_mtu = eth_change_mtu,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = am79c961_poll_controller,
|
|
#endif
|
|
};
|
|
|
|
static int __init am79c961_probe(struct platform_device *pdev)
|
|
{
|
|
struct resource *res;
|
|
struct net_device *dev;
|
|
struct dev_priv *priv;
|
|
int i, ret;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
|
if (!res)
|
|
return -ENODEV;
|
|
|
|
dev = alloc_etherdev(sizeof(struct dev_priv));
|
|
ret = -ENOMEM;
|
|
if (!dev)
|
|
goto out;
|
|
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
|
|
priv = netdev_priv(dev);
|
|
|
|
/*
|
|
* Fixed address and IRQ lines here.
|
|
* The PNP initialisation should have been
|
|
* done by the ether bootp loader.
|
|
*/
|
|
dev->base_addr = res->start;
|
|
ret = platform_get_irq(pdev, 0);
|
|
|
|
if (ret < 0) {
|
|
ret = -ENODEV;
|
|
goto nodev;
|
|
}
|
|
dev->irq = ret;
|
|
|
|
ret = -ENODEV;
|
|
if (!request_region(dev->base_addr, 0x18, dev->name))
|
|
goto nodev;
|
|
|
|
/*
|
|
* Reset the device.
|
|
*/
|
|
inb(dev->base_addr + NET_RESET);
|
|
udelay(5);
|
|
|
|
/*
|
|
* Check the manufacturer part of the
|
|
* ether address.
|
|
*/
|
|
if (inb(dev->base_addr) != 0x08 ||
|
|
inb(dev->base_addr + 2) != 0x00 ||
|
|
inb(dev->base_addr + 4) != 0x2b)
|
|
goto release;
|
|
|
|
for (i = 0; i < 6; i++)
|
|
dev->dev_addr[i] = inb(dev->base_addr + i * 2) & 0xff;
|
|
|
|
am79c961_banner();
|
|
|
|
spin_lock_init(&priv->chip_lock);
|
|
init_timer(&priv->timer);
|
|
priv->timer.data = (unsigned long)dev;
|
|
priv->timer.function = am79c961_timer;
|
|
|
|
if (am79c961_hw_init(dev))
|
|
goto release;
|
|
|
|
dev->netdev_ops = &am79c961_netdev_ops;
|
|
|
|
ret = register_netdev(dev);
|
|
if (ret == 0) {
|
|
printk(KERN_INFO "%s: ether address %pM\n",
|
|
dev->name, dev->dev_addr);
|
|
return 0;
|
|
}
|
|
|
|
release:
|
|
release_region(dev->base_addr, 0x18);
|
|
nodev:
|
|
free_netdev(dev);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static struct platform_driver am79c961_driver = {
|
|
.probe = am79c961_probe,
|
|
.driver = {
|
|
.name = "am79c961",
|
|
},
|
|
};
|
|
|
|
static int __init am79c961_init(void)
|
|
{
|
|
return platform_driver_register(&am79c961_driver);
|
|
}
|
|
|
|
__initcall(am79c961_init);
|