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![Stephen Hemminger](/assets/img/avatar_default.png)
Almost there. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
804 lines
22 KiB
C
804 lines
22 KiB
C
/* ne2.c: A NE/2 Ethernet Driver for Linux. */
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/*
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Based on the NE2000 driver written by Donald Becker (1992-94).
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modified by Wim Dumon (Apr 1996)
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This software may be used and distributed according to the terms
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of the GNU General Public License, incorporated herein by reference.
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The author may be reached as wimpie@linux.cc.kuleuven.ac.be
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Currently supported: NE/2
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This patch was never tested on other MCA-ethernet adapters, but it
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might work. Just give it a try and let me know if you have problems.
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Also mail me if it really works, please!
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Changelog:
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Mon Feb 3 16:26:02 MET 1997
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- adapted the driver to work with the 2.1.25 kernel
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- multiple ne2 support (untested)
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- module support (untested)
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Fri Aug 28 00:18:36 CET 1998 (David Weinehall)
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- fixed a few minor typos
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- made the MODULE_PARM conditional (it only works with the v2.1.x kernels)
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- fixed the module support (Now it's working...)
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Mon Sep 7 19:01:44 CET 1998 (David Weinehall)
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- added support for Arco Electronics AE/2-card (experimental)
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Mon Sep 14 09:53:42 CET 1998 (David Weinehall)
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- added support for Compex ENET-16MC/P (experimental)
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Tue Sep 15 16:21:12 CET 1998 (David Weinehall, Magnus Jonsson, Tomas Ogren)
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- Miscellaneous bugfixes
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Tue Sep 19 16:21:12 CET 1998 (Magnus Jonsson)
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- Cleanup
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Wed Sep 23 14:33:34 CET 1998 (David Weinehall)
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- Restructuring and rewriting for v2.1.x compliance
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Wed Oct 14 17:19:21 CET 1998 (David Weinehall)
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- Added code that unregisters irq and proc-info
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- Version# bump
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Mon Nov 16 15:28:23 CET 1998 (Wim Dumon)
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- pass 'dev' as last parameter of request_irq in stead of 'NULL'
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Wed Feb 7 21:24:00 CET 2001 (Alfred Arnold)
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- added support for the D-Link DE-320CT
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* WARNING
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-------
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This is alpha-test software. It is not guaranteed to work. As a
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matter of fact, I'm quite sure there are *LOTS* of bugs in here. I
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would like to hear from you if you use this driver, even if it works.
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If it doesn't work, be sure to send me a mail with the problems !
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*/
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static const char *version = "ne2.c:v0.91 Nov 16 1998 Wim Dumon <wimpie@kotnet.org>\n";
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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/init.h>
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#include <linux/mca-legacy.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/bitops.h>
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#include <linux/jiffies.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include "8390.h"
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#define DRV_NAME "ne2"
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/* Some defines that people can play with if so inclined. */
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/* Do we perform extra sanity checks on stuff ? */
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/* #define NE_SANITY_CHECK */
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/* Do we implement the read before write bugfix ? */
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/* #define NE_RW_BUGFIX */
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/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
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/* #define PACKETBUF_MEMSIZE 0x40 */
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/* ---- No user-serviceable parts below ---- */
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#define NE_BASE (dev->base_addr)
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#define NE_CMD 0x00
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#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
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#define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */
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#define NE_IO_EXTENT 0x30
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#define NE1SM_START_PG 0x20 /* First page of TX buffer */
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#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
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#define NESM_START_PG 0x40 /* First page of TX buffer */
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#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
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/* From the .ADF file: */
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static unsigned int addresses[7] __initdata =
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{0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0};
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static int irqs[4] __initdata = {3, 4, 5, 9};
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/* From the D-Link ADF file: */
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static unsigned int dlink_addresses[4] __initdata =
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{0x300, 0x320, 0x340, 0x360};
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static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15};
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struct ne2_adapters_t {
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unsigned int id;
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char *name;
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};
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static struct ne2_adapters_t ne2_adapters[] __initdata = {
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{ 0x6354, "Arco Ethernet Adapter AE/2" },
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{ 0x70DE, "Compex ENET-16 MC/P" },
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{ 0x7154, "Novell Ethernet Adapter NE/2" },
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{ 0x56ea, "D-Link DE-320CT" },
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{ 0x0000, NULL }
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};
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extern int netcard_probe(struct net_device *dev);
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static int ne2_probe1(struct net_device *dev, int slot);
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static int ne_open(struct net_device *dev);
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static int ne_close(struct net_device *dev);
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static void ne_reset_8390(struct net_device *dev);
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static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
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int ring_page);
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static void ne_block_input(struct net_device *dev, int count,
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struct sk_buff *skb, int ring_offset);
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static void ne_block_output(struct net_device *dev, const int count,
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const unsigned char *buf, const int start_page);
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/*
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* special code to read the DE-320's MAC address EEPROM. In contrast to a
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* standard NE design, this is a serial EEPROM (93C46) that has to be read
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* bit by bit. The EEPROM cotrol port at base + 0x1e has the following
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* layout:
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*
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* Bit 0 = Data out (read from EEPROM)
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* Bit 1 = Data in (write to EEPROM)
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* Bit 2 = Clock
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* Bit 3 = Chip Select
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* Bit 7 = ~50 kHz clock for defined delays
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*
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*/
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static void __init dlink_put_eeprom(unsigned char value, unsigned int addr)
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{
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int z;
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unsigned char v1, v2;
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/* write the value to the NIC EEPROM register */
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outb(value, addr + 0x1e);
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/* now wait the clock line to toggle twice. Effectively, we are
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waiting (at least) for one clock cycle */
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for (z = 0; z < 2; z++) {
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do {
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v1 = inb(addr + 0x1e);
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v2 = inb(addr + 0x1e);
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}
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while (!((v1 ^ v2) & 0x80));
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}
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}
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static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr)
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{
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/* shift data bit into correct position */
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bit = bit << 1;
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/* write value, keep clock line high for two cycles */
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dlink_put_eeprom(0x09 | bit, addr);
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dlink_put_eeprom(0x0d | bit, addr);
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dlink_put_eeprom(0x0d | bit, addr);
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dlink_put_eeprom(0x09 | bit, addr);
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}
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static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr)
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{
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int z;
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/* adjust bits so that they are left-aligned in a 16-bit-word */
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value = value << (16 - len);
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/* shift bits out to the EEPROM */
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for (z = 0; z < len; z++) {
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dlink_send_eeprom_bit((value & 0x8000) >> 15, addr);
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value = value << 1;
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}
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}
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static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr)
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{
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int z;
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unsigned int value = 0;
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/* pull the CS line low for a moment. This resets the EEPROM-
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internal logic, and makes it ready for a new command. */
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dlink_put_eeprom(0x01, addr);
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dlink_put_eeprom(0x09, addr);
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/* send one start bit, read command (1 - 0), plus the address to
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the EEPROM */
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dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr);
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/* get the data word. We clock by sending 0s to the EEPROM, which
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get ignored during the read process */
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for (z = 0; z < 16; z++) {
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dlink_send_eeprom_bit(0, addr);
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value = (value << 1) | (inb(addr + 0x1e) & 0x01);
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}
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return value;
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}
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/*
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* Note that at boot, this probe only picks up one card at a time.
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*/
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static int __init do_ne2_probe(struct net_device *dev)
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{
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static int current_mca_slot = -1;
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int i;
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int adapter_found = 0;
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/* Do not check any supplied i/o locations.
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POS registers usually don't fail :) */
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/* MCA cards have POS registers.
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Autodetecting MCA cards is extremely simple.
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Just search for the card. */
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for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) {
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current_mca_slot =
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mca_find_unused_adapter(ne2_adapters[i].id, 0);
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if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) {
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int res;
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mca_set_adapter_name(current_mca_slot,
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ne2_adapters[i].name);
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mca_mark_as_used(current_mca_slot);
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res = ne2_probe1(dev, current_mca_slot);
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if (res)
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mca_mark_as_unused(current_mca_slot);
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return res;
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}
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}
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return -ENODEV;
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}
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#ifndef MODULE
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struct net_device * __init ne2_probe(int unit)
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{
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struct net_device *dev = alloc_eip_netdev();
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int err;
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if (!dev)
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return ERR_PTR(-ENOMEM);
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sprintf(dev->name, "eth%d", unit);
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netdev_boot_setup_check(dev);
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err = do_ne2_probe(dev);
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if (err)
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goto out;
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return dev;
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out:
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free_netdev(dev);
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return ERR_PTR(err);
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}
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#endif
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static int ne2_procinfo(char *buf, int slot, struct net_device *dev)
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{
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int len=0;
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len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" );
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len += sprintf(buf+len, "Driver written by Wim Dumon ");
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len += sprintf(buf+len, "<wimpie@kotnet.org>\n");
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len += sprintf(buf+len, "Modified by ");
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len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n");
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len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n");
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len += sprintf(buf+len, "Based on the original NE2000 drivers\n" );
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len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr);
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len += sprintf(buf+len, "IRQ : %d\n", dev->irq);
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len += sprintf(buf+len, "HW addr : %pM\n", dev->dev_addr);
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return len;
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}
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static int __init ne2_probe1(struct net_device *dev, int slot)
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{
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int i, base_addr, irq, retval;
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unsigned char POS;
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unsigned char SA_prom[32];
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const char *name = "NE/2";
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int start_page, stop_page;
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static unsigned version_printed;
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if (ei_debug && version_printed++ == 0)
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printk(version);
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printk("NE/2 ethercard found in slot %d:", slot);
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/* Read base IO and IRQ from the POS-registers */
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POS = mca_read_stored_pos(slot, 2);
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if(!(POS % 2)) {
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printk(" disabled.\n");
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return -ENODEV;
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}
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/* handle different POS register structure for D-Link card */
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if (mca_read_stored_pos(slot, 0) == 0xea) {
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base_addr = dlink_addresses[(POS >> 5) & 0x03];
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irq = dlink_irqs[(POS >> 2) & 0x07];
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}
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else {
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i = (POS & 0xE)>>1;
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/* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0"
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" en zou het moeten werken -> %d\n", i);
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The above line was for remote testing, thanx to sdog ... */
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base_addr = addresses[i - 1];
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irq = irqs[(POS & 0x60)>>5];
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}
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if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME))
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return -EBUSY;
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#ifdef DEBUG
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printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS,
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base_addr, irq);
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#endif
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#ifndef CRYNWR_WAY
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/* Reset the card the way they do it in the Crynwr packet driver */
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for (i=0; i<8; i++)
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outb(0x0, base_addr + NE_RESET);
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inb(base_addr + NE_RESET);
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outb(0x21, base_addr + NE_CMD);
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if (inb(base_addr + NE_CMD) != 0x21) {
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printk("NE/2 adapter not responding\n");
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retval = -ENODEV;
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goto out;
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}
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/* In the crynwr sources they do a RAM-test here. I skip it. I suppose
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my RAM is okay. Suppose your memory is broken. Then this test
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should fail and you won't be able to use your card. But if I do not
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test, you won't be able to use your card, neither. So this test
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won't help you. */
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#else /* _I_ never tested it this way .. Go ahead and try ...*/
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/* Reset card. Who knows what dain-bramaged state it was left in. */
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{
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unsigned long reset_start_time = jiffies;
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/* DON'T change these to inb_p/outb_p or reset will fail on
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clones.. */
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outb(inb(base_addr + NE_RESET), base_addr + NE_RESET);
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while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0)
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if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
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printk(" not found (no reset ack).\n");
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retval = -ENODEV;
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goto out;
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}
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outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */
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}
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#endif
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/* Read the 16 bytes of station address PROM.
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We must first initialize registers, similar to
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NS8390p_init(eifdev, 0).
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We can't reliably read the SAPROM address without this.
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(I learned the hard way!). */
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{
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struct {
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unsigned char value, offset;
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} program_seq[] = {
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/* Select page 0 */
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{E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD},
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{0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */
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{0x00, EN0_RCNTLO}, /* Clear the count regs. */
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{0x00, EN0_RCNTHI},
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{0x00, EN0_IMR}, /* Mask completion irq. */
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{0xFF, EN0_ISR},
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{E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
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{E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
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{32, EN0_RCNTLO},
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{0x00, EN0_RCNTHI},
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{0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
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{0x00, EN0_RSARHI},
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{E8390_RREAD+E8390_START, E8390_CMD},
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};
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for (i = 0; i < ARRAY_SIZE(program_seq); i++)
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outb_p(program_seq[i].value, base_addr +
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program_seq[i].offset);
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}
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for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) {
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SA_prom[i] = inb(base_addr + NE_DATAPORT);
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}
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/* I don't know whether the previous sequence includes the general
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board reset procedure, so better don't omit it and just overwrite
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the garbage read from a DE-320 with correct stuff. */
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if (mca_read_stored_pos(slot, 0) == 0xea) {
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unsigned int v;
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for (i = 0; i < 3; i++) {
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v = dlink_get_eeprom(i, base_addr);
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SA_prom[(i << 1) ] = v & 0xff;
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SA_prom[(i << 1) + 1] = (v >> 8) & 0xff;
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}
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}
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start_page = NESM_START_PG;
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stop_page = NESM_STOP_PG;
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dev->irq=irq;
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/* Snarf the interrupt now. There's no point in waiting since we cannot
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share and the board will usually be enabled. */
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retval = request_irq(dev->irq, eip_interrupt, 0, DRV_NAME, dev);
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if (retval) {
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printk (" unable to get IRQ %d (irqval=%d).\n",
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dev->irq, retval);
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goto out;
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}
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dev->base_addr = base_addr;
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for(i = 0; i < ETHER_ADDR_LEN; i++)
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dev->dev_addr[i] = SA_prom[i];
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printk(" %pM\n", dev->dev_addr);
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printk("%s: %s found at %#x, using IRQ %d.\n",
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dev->name, name, base_addr, dev->irq);
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mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev);
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ei_status.name = name;
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ei_status.tx_start_page = start_page;
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ei_status.stop_page = stop_page;
|
|
ei_status.word16 = (2 == 2);
|
|
|
|
ei_status.rx_start_page = start_page + TX_PAGES;
|
|
#ifdef PACKETBUF_MEMSIZE
|
|
/* Allow the packet buffer size to be overridden by know-it-alls. */
|
|
ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
|
|
#endif
|
|
|
|
ei_status.reset_8390 = &ne_reset_8390;
|
|
ei_status.block_input = &ne_block_input;
|
|
ei_status.block_output = &ne_block_output;
|
|
ei_status.get_8390_hdr = &ne_get_8390_hdr;
|
|
|
|
ei_status.priv = slot;
|
|
|
|
dev->netdev_ops = &eip_netdev_ops;
|
|
NS8390p_init(dev, 0);
|
|
|
|
retval = register_netdev(dev);
|
|
if (retval)
|
|
goto out1;
|
|
return 0;
|
|
out1:
|
|
mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
|
|
free_irq(dev->irq, dev);
|
|
out:
|
|
release_region(base_addr, NE_IO_EXTENT);
|
|
return retval;
|
|
}
|
|
|
|
/* Hard reset the card. This used to pause for the same period that a
|
|
8390 reset command required, but that shouldn't be necessary. */
|
|
static void ne_reset_8390(struct net_device *dev)
|
|
{
|
|
unsigned long reset_start_time = jiffies;
|
|
|
|
if (ei_debug > 1)
|
|
printk("resetting the 8390 t=%ld...", jiffies);
|
|
|
|
/* DON'T change these to inb_p/outb_p or reset will fail on clones. */
|
|
outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
|
|
|
|
ei_status.txing = 0;
|
|
ei_status.dmaing = 0;
|
|
|
|
/* This check _should_not_ be necessary, omit eventually. */
|
|
while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
|
|
if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
|
|
printk("%s: ne_reset_8390() did not complete.\n",
|
|
dev->name);
|
|
break;
|
|
}
|
|
outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
|
|
}
|
|
|
|
/* Grab the 8390 specific header. Similar to the block_input routine, but
|
|
we don't need to be concerned with ring wrap as the header will be at
|
|
the start of a page, so we optimize accordingly. */
|
|
|
|
static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
|
|
int ring_page)
|
|
{
|
|
|
|
int nic_base = dev->base_addr;
|
|
|
|
/* This *shouldn't* happen.
|
|
If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing) {
|
|
printk("%s: DMAing conflict in ne_get_8390_hdr "
|
|
"[DMAstat:%d][irqlock:%d].\n",
|
|
dev->name, ei_status.dmaing, ei_status.irqlock);
|
|
return;
|
|
}
|
|
|
|
ei_status.dmaing |= 0x01;
|
|
outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
|
outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
|
|
outb_p(0, nic_base + EN0_RCNTHI);
|
|
outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
|
|
outb_p(ring_page, nic_base + EN0_RSARHI);
|
|
outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
|
|
if (ei_status.word16)
|
|
insw(NE_BASE + NE_DATAPORT, hdr,
|
|
sizeof(struct e8390_pkt_hdr)>>1);
|
|
else
|
|
insb(NE_BASE + NE_DATAPORT, hdr,
|
|
sizeof(struct e8390_pkt_hdr));
|
|
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
}
|
|
|
|
/* Block input and output, similar to the Crynwr packet driver. If you
|
|
are porting to a new ethercard, look at the packet driver source for
|
|
hints. The NEx000 doesn't share the on-board packet memory -- you have
|
|
to put the packet out through the "remote DMA" dataport using outb. */
|
|
|
|
static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb,
|
|
int ring_offset)
|
|
{
|
|
#ifdef NE_SANITY_CHECK
|
|
int xfer_count = count;
|
|
#endif
|
|
int nic_base = dev->base_addr;
|
|
char *buf = skb->data;
|
|
|
|
/* This *shouldn't* happen.
|
|
If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing) {
|
|
printk("%s: DMAing conflict in ne_block_input "
|
|
"[DMAstat:%d][irqlock:%d].\n",
|
|
dev->name, ei_status.dmaing, ei_status.irqlock);
|
|
return;
|
|
}
|
|
ei_status.dmaing |= 0x01;
|
|
outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
|
outb_p(count & 0xff, nic_base + EN0_RCNTLO);
|
|
outb_p(count >> 8, nic_base + EN0_RCNTHI);
|
|
outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
|
|
outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
|
|
outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
if (ei_status.word16) {
|
|
insw(NE_BASE + NE_DATAPORT,buf,count>>1);
|
|
if (count & 0x01) {
|
|
buf[count-1] = inb(NE_BASE + NE_DATAPORT);
|
|
#ifdef NE_SANITY_CHECK
|
|
xfer_count++;
|
|
#endif
|
|
}
|
|
} else {
|
|
insb(NE_BASE + NE_DATAPORT, buf, count);
|
|
}
|
|
|
|
#ifdef NE_SANITY_CHECK
|
|
/* This was for the ALPHA version only, but enough people have
|
|
been encountering problems so it is still here. If you see
|
|
this message you either 1) have a slightly incompatible clone
|
|
or 2) have noise/speed problems with your bus. */
|
|
if (ei_debug > 1) { /* DMA termination address check... */
|
|
int addr, tries = 20;
|
|
do {
|
|
/* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
|
|
-- it's broken for Rx on some cards! */
|
|
int high = inb_p(nic_base + EN0_RSARHI);
|
|
int low = inb_p(nic_base + EN0_RSARLO);
|
|
addr = (high << 8) + low;
|
|
if (((ring_offset + xfer_count) & 0xff) == low)
|
|
break;
|
|
} while (--tries > 0);
|
|
if (tries <= 0)
|
|
printk("%s: RX transfer address mismatch,"
|
|
"%#4.4x (expected) vs. %#4.4x (actual).\n",
|
|
dev->name, ring_offset + xfer_count, addr);
|
|
}
|
|
#endif
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
}
|
|
|
|
static void ne_block_output(struct net_device *dev, int count,
|
|
const unsigned char *buf, const int start_page)
|
|
{
|
|
int nic_base = NE_BASE;
|
|
unsigned long dma_start;
|
|
#ifdef NE_SANITY_CHECK
|
|
int retries = 0;
|
|
#endif
|
|
|
|
/* Round the count up for word writes. Do we need to do this?
|
|
What effect will an odd byte count have on the 8390?
|
|
I should check someday. */
|
|
if (ei_status.word16 && (count & 0x01))
|
|
count++;
|
|
|
|
/* This *shouldn't* happen.
|
|
If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing) {
|
|
printk("%s: DMAing conflict in ne_block_output."
|
|
"[DMAstat:%d][irqlock:%d]\n",
|
|
dev->name, ei_status.dmaing, ei_status.irqlock);
|
|
return;
|
|
}
|
|
ei_status.dmaing |= 0x01;
|
|
/* We should already be in page 0, but to be safe... */
|
|
outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
|
|
|
|
#ifdef NE_SANITY_CHECK
|
|
retry:
|
|
#endif
|
|
|
|
#ifdef NE8390_RW_BUGFIX
|
|
/* Handle the read-before-write bug the same way as the
|
|
Crynwr packet driver -- the NatSemi method doesn't work.
|
|
Actually this doesn't always work either, but if you have
|
|
problems with your NEx000 this is better than nothing! */
|
|
outb_p(0x42, nic_base + EN0_RCNTLO);
|
|
outb_p(0x00, nic_base + EN0_RCNTHI);
|
|
outb_p(0x42, nic_base + EN0_RSARLO);
|
|
outb_p(0x00, nic_base + EN0_RSARHI);
|
|
outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
/* Make certain that the dummy read has occurred. */
|
|
SLOW_DOWN_IO;
|
|
SLOW_DOWN_IO;
|
|
SLOW_DOWN_IO;
|
|
#endif
|
|
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR);
|
|
|
|
/* Now the normal output. */
|
|
outb_p(count & 0xff, nic_base + EN0_RCNTLO);
|
|
outb_p(count >> 8, nic_base + EN0_RCNTHI);
|
|
outb_p(0x00, nic_base + EN0_RSARLO);
|
|
outb_p(start_page, nic_base + EN0_RSARHI);
|
|
|
|
outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
|
|
if (ei_status.word16) {
|
|
outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
|
|
} else {
|
|
outsb(NE_BASE + NE_DATAPORT, buf, count);
|
|
}
|
|
|
|
dma_start = jiffies;
|
|
|
|
#ifdef NE_SANITY_CHECK
|
|
/* This was for the ALPHA version only, but enough people have
|
|
been encountering problems so it is still here. */
|
|
|
|
if (ei_debug > 1) { /* DMA termination address check... */
|
|
int addr, tries = 20;
|
|
do {
|
|
int high = inb_p(nic_base + EN0_RSARHI);
|
|
int low = inb_p(nic_base + EN0_RSARLO);
|
|
addr = (high << 8) + low;
|
|
if ((start_page << 8) + count == addr)
|
|
break;
|
|
} while (--tries > 0);
|
|
if (tries <= 0) {
|
|
printk("%s: Tx packet transfer address mismatch,"
|
|
"%#4.4x (expected) vs. %#4.4x (actual).\n",
|
|
dev->name, (start_page << 8) + count, addr);
|
|
if (retries++ == 0)
|
|
goto retry;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
|
|
if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
|
|
printk("%s: timeout waiting for Tx RDC.\n", dev->name);
|
|
ne_reset_8390(dev);
|
|
NS8390p_init(dev, 1);
|
|
break;
|
|
}
|
|
|
|
outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
return;
|
|
}
|
|
|
|
|
|
#ifdef MODULE
|
|
#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
|
|
static struct net_device *dev_ne[MAX_NE_CARDS];
|
|
static int io[MAX_NE_CARDS];
|
|
static int irq[MAX_NE_CARDS];
|
|
static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param_array(io, int, NULL, 0);
|
|
module_param_array(irq, int, NULL, 0);
|
|
module_param_array(bad, int, NULL, 0);
|
|
MODULE_PARM_DESC(io, "(ignored)");
|
|
MODULE_PARM_DESC(irq, "(ignored)");
|
|
MODULE_PARM_DESC(bad, "(ignored)");
|
|
|
|
/* Module code fixed by David Weinehall */
|
|
|
|
int __init init_module(void)
|
|
{
|
|
struct net_device *dev;
|
|
int this_dev, found = 0;
|
|
|
|
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
|
|
dev = alloc_eip_netdev();
|
|
if (!dev)
|
|
break;
|
|
dev->irq = irq[this_dev];
|
|
dev->mem_end = bad[this_dev];
|
|
dev->base_addr = io[this_dev];
|
|
if (do_ne2_probe(dev) == 0) {
|
|
dev_ne[found++] = dev;
|
|
continue;
|
|
}
|
|
free_netdev(dev);
|
|
break;
|
|
}
|
|
if (found)
|
|
return 0;
|
|
printk(KERN_WARNING "ne2.c: No NE/2 card found\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
static void cleanup_card(struct net_device *dev)
|
|
{
|
|
mca_mark_as_unused(ei_status.priv);
|
|
mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
|
|
free_irq(dev->irq, dev);
|
|
release_region(dev->base_addr, NE_IO_EXTENT);
|
|
}
|
|
|
|
void __exit cleanup_module(void)
|
|
{
|
|
int this_dev;
|
|
|
|
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
|
|
struct net_device *dev = dev_ne[this_dev];
|
|
if (dev) {
|
|
unregister_netdev(dev);
|
|
cleanup_card(dev);
|
|
free_netdev(dev);
|
|
}
|
|
}
|
|
}
|
|
#endif /* MODULE */
|