/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Driver for SGI's IOC3 based Ethernet cards as found in the PCI card.
*
* Copyright (C) 1999, 2000, 2001, 2003 Ralf Baechle
* Copyright (C) 1995, 1999, 2000, 2001 by Silicon Graphics, Inc.
*
* References:
* o IOC3 ASIC specification 4.51, 1996-04-18
* o IEEE 802.3 specification, 2000 edition
* o DP38840A Specification, National Semiconductor, March 1997
*
* To do:
*
* o Handle allocation failures in ioc3_alloc_skb() more gracefully.
* o Handle allocation failures in ioc3_init_rings().
* o Use prefetching for large packets. What is a good lower limit for
* prefetching?
* o We're probably allocating a bit too much memory.
* o Use hardware checksums.
* o Convert to using a IOC3 meta driver.
* o Which PHYs might possibly be attached to the IOC3 in real live,
* which workarounds are required for them? Do we ever have Lucent's?
* o For the 2.5 branch kill the mii-tool ioctls.
*/
#define IOC3_NAME "ioc3-eth"
#define IOC3_VERSION "2.6.3-4"
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/crc32.h>
#include <linux/mii.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/dma-mapping.h>
#ifdef CONFIG_SERIAL_8250
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#endif
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>
#include <net/ip.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
#include <asm/sn/types.h>
#include <asm/sn/sn0/addrs.h>
#include <asm/sn/sn0/hubni.h>
#include <asm/sn/sn0/hubio.h>
#include <asm/sn/klconfig.h>
#include <asm/sn/ioc3.h>
#include <asm/sn/sn0/ip27.h>
#include <asm/pci/bridge.h>
/*
* 64 RX buffers. This is tunable in the range of 16 <= x < 512. The
* value must be a power of two.
*/
#define RX_BUFFS 64
#define ETCSR_FD ((17<<ETCSR_IPGR2_SHIFT) | (11<<ETCSR_IPGR1_SHIFT) | 21)
#define ETCSR_HD ((21<<ETCSR_IPGR2_SHIFT) | (21<<ETCSR_IPGR1_SHIFT) | 21)
/* Private per NIC data of the d
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