884 lines
26 KiB
C
884 lines
26 KiB
C
/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
|
||
/*
|
||
Written 1992-94 by Donald Becker.
|
||
|
||
Copyright 1993 United States Government as represented by the
|
||
Director, National Security Agency.
|
||
|
||
This software may be used and distributed according to the terms
|
||
of the GNU General Public License, incorporated herein by reference.
|
||
|
||
The author may be reached as becker@scyld.com, or C/O
|
||
Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
|
||
|
||
This driver should work with many programmed-I/O 8390-based ethernet
|
||
boards. Currently it supports the NE1000, NE2000, many clones,
|
||
and some Cabletron products.
|
||
|
||
Changelog:
|
||
|
||
Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
|
||
sanity checks and bad clone support optional.
|
||
Paul Gortmaker : new reset code, reset card after probe at boot.
|
||
Paul Gortmaker : multiple card support for module users.
|
||
Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
|
||
Paul Gortmaker : Allow users with bad cards to avoid full probe.
|
||
Paul Gortmaker : PCI probe changes, more PCI cards supported.
|
||
rjohnson@analogic.com : Changed init order so an interrupt will only
|
||
occur after memory is allocated for dev->priv. Deallocated memory
|
||
last in cleanup_modue()
|
||
Richard Guenther : Added support for ISAPnP cards
|
||
Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
|
||
Hayato Fujiwara : Add m32r support.
|
||
|
||
*/
|
||
|
||
/* Routines for the NatSemi-based designs (NE[12]000). */
|
||
|
||
static const char version1[] =
|
||
"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
|
||
static const char version2[] =
|
||
"Last modified Nov 1, 2000 by Paul Gortmaker\n";
|
||
|
||
|
||
#include <linux/module.h>
|
||
#include <linux/kernel.h>
|
||
#include <linux/errno.h>
|
||
#include <linux/isapnp.h>
|
||
#include <linux/init.h>
|
||
#include <linux/interrupt.h>
|
||
#include <linux/delay.h>
|
||
#include <linux/netdevice.h>
|
||
#include <linux/etherdevice.h>
|
||
#include <linux/jiffies.h>
|
||
|
||
#include <asm/system.h>
|
||
#include <asm/io.h>
|
||
|
||
#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
|
||
#include <asm/tx4938/rbtx4938.h>
|
||
#endif
|
||
|
||
#include "8390.h"
|
||
|
||
#define DRV_NAME "ne"
|
||
|
||
/* Some defines that people can play with if so inclined. */
|
||
|
||
/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
|
||
#define SUPPORT_NE_BAD_CLONES
|
||
|
||
/* Do we perform extra sanity checks on stuff ? */
|
||
/* #define NE_SANITY_CHECK */
|
||
|
||
/* Do we implement the read before write bugfix ? */
|
||
/* #define NE_RW_BUGFIX */
|
||
|
||
/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
|
||
/* #define PACKETBUF_MEMSIZE 0x40 */
|
||
|
||
/* A zero-terminated list of I/O addresses to be probed at boot. */
|
||
#ifndef MODULE
|
||
static unsigned int netcard_portlist[] __initdata = {
|
||
0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
|
||
};
|
||
#endif
|
||
|
||
static struct isapnp_device_id isapnp_clone_list[] __initdata = {
|
||
{ ISAPNP_CARD_ID('A','X','E',0x2011),
|
||
ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
|
||
(long) "NetGear EA201" },
|
||
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
|
||
ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
|
||
(long) "NN NE2000" },
|
||
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
|
||
ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
|
||
(long) "Generic PNP" },
|
||
{ } /* terminate list */
|
||
};
|
||
|
||
MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
|
||
|
||
#ifdef SUPPORT_NE_BAD_CLONES
|
||
/* A list of bad clones that we none-the-less recognize. */
|
||
static struct { const char *name8, *name16; unsigned char SAprefix[4];}
|
||
bad_clone_list[] __initdata = {
|
||
{"DE100", "DE200", {0x00, 0xDE, 0x01,}},
|
||
{"DE120", "DE220", {0x00, 0x80, 0xc8,}},
|
||
{"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
|
||
{"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
|
||
{"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
|
||
{"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
|
||
{"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
|
||
{"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
|
||
{"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
|
||
{"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
|
||
{"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
|
||
{"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
|
||
{"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
|
||
#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
|
||
{"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
|
||
#endif
|
||
{"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
|
||
{NULL,}
|
||
};
|
||
#endif
|
||
|
||
/* ---- No user-serviceable parts below ---- */
|
||
|
||
#define NE_BASE (dev->base_addr)
|
||
#define NE_CMD 0x00
|
||
#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
|
||
#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
|
||
#define NE_IO_EXTENT 0x20
|
||
|
||
#define NE1SM_START_PG 0x20 /* First page of TX buffer */
|
||
#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
|
||
#define NESM_START_PG 0x40 /* First page of TX buffer */
|
||
#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
|
||
|
||
#if defined(CONFIG_PLAT_MAPPI)
|
||
# define DCR_VAL 0x4b
|
||
#elif defined(CONFIG_PLAT_OAKS32R) || \
|
||
defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
|
||
# define DCR_VAL 0x48 /* 8-bit mode */
|
||
#else
|
||
# define DCR_VAL 0x49
|
||
#endif
|
||
|
||
static int ne_probe1(struct net_device *dev, int ioaddr);
|
||
static int ne_probe_isapnp(struct net_device *dev);
|
||
|
||
static int ne_open(struct net_device *dev);
|
||
static int ne_close(struct net_device *dev);
|
||
|
||
static void ne_reset_8390(struct net_device *dev);
|
||
static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
|
||
int ring_page);
|
||
static void ne_block_input(struct net_device *dev, int count,
|
||
struct sk_buff *skb, int ring_offset);
|
||
static void ne_block_output(struct net_device *dev, const int count,
|
||
const unsigned char *buf, const int start_page);
|
||
|
||
|
||
/* Probe for various non-shared-memory ethercards.
|
||
|
||
NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
|
||
buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
|
||
the SAPROM, while other supposed NE2000 clones must be detected by their
|
||
SA prefix.
|
||
|
||
Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
|
||
mode results in doubled values, which can be detected and compensated for.
|
||
|
||
The probe is also responsible for initializing the card and filling
|
||
in the 'dev' and 'ei_status' structures.
|
||
|
||
We use the minimum memory size for some ethercard product lines, iff we can't
|
||
distinguish models. You can increase the packet buffer size by setting
|
||
PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
|
||
E1010 starts at 0x100 and ends at 0x2000.
|
||
E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
|
||
E2010 starts at 0x100 and ends at 0x4000.
|
||
E2010-x starts at 0x100 and ends at 0xffff. */
|
||
|
||
static int __init do_ne_probe(struct net_device *dev)
|
||
{
|
||
unsigned int base_addr = dev->base_addr;
|
||
#ifndef MODULE
|
||
int orig_irq = dev->irq;
|
||
#endif
|
||
|
||
SET_MODULE_OWNER(dev);
|
||
|
||
/* First check any supplied i/o locations. User knows best. <cough> */
|
||
if (base_addr > 0x1ff) /* Check a single specified location. */
|
||
return ne_probe1(dev, base_addr);
|
||
else if (base_addr != 0) /* Don't probe at all. */
|
||
return -ENXIO;
|
||
|
||
/* Then look for any installed ISAPnP clones */
|
||
if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
|
||
return 0;
|
||
|
||
#ifndef MODULE
|
||
/* Last resort. The semi-risky ISA auto-probe. */
|
||
for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
|
||
int ioaddr = netcard_portlist[base_addr];
|
||
dev->irq = orig_irq;
|
||
if (ne_probe1(dev, ioaddr) == 0)
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
return -ENODEV;
|
||
}
|
||
|
||
#ifndef MODULE
|
||
struct net_device * __init ne_probe(int unit)
|
||
{
|
||
struct net_device *dev = alloc_ei_netdev();
|
||
int err;
|
||
|
||
if (!dev)
|
||
return ERR_PTR(-ENOMEM);
|
||
|
||
sprintf(dev->name, "eth%d", unit);
|
||
netdev_boot_setup_check(dev);
|
||
|
||
#ifdef CONFIG_TOSHIBA_RBTX4938
|
||
dev->base_addr = RBTX4938_RTL_8019_BASE;
|
||
dev->irq = RBTX4938_RTL_8019_IRQ;
|
||
#endif
|
||
err = do_ne_probe(dev);
|
||
if (err)
|
||
goto out;
|
||
return dev;
|
||
out:
|
||
free_netdev(dev);
|
||
return ERR_PTR(err);
|
||
}
|
||
#endif
|
||
|
||
static int __init ne_probe_isapnp(struct net_device *dev)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
|
||
struct pnp_dev *idev = NULL;
|
||
|
||
while ((idev = pnp_find_dev(NULL,
|
||
isapnp_clone_list[i].vendor,
|
||
isapnp_clone_list[i].function,
|
||
idev))) {
|
||
/* Avoid already found cards from previous calls */
|
||
if (pnp_device_attach(idev) < 0)
|
||
continue;
|
||
if (pnp_activate_dev(idev) < 0) {
|
||
pnp_device_detach(idev);
|
||
continue;
|
||
}
|
||
/* if no io and irq, search for next */
|
||
if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
|
||
pnp_device_detach(idev);
|
||
continue;
|
||
}
|
||
/* found it */
|
||
dev->base_addr = pnp_port_start(idev, 0);
|
||
dev->irq = pnp_irq(idev, 0);
|
||
printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
|
||
(char *) isapnp_clone_list[i].driver_data,
|
||
dev->base_addr, dev->irq);
|
||
if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
|
||
printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
|
||
pnp_device_detach(idev);
|
||
return -ENXIO;
|
||
}
|
||
ei_status.priv = (unsigned long)idev;
|
||
break;
|
||
}
|
||
if (!idev)
|
||
continue;
|
||
return 0;
|
||
}
|
||
|
||
return -ENODEV;
|
||
}
|
||
|
||
static int __init ne_probe1(struct net_device *dev, int ioaddr)
|
||
{
|
||
int i;
|
||
unsigned char SA_prom[32];
|
||
int wordlength = 2;
|
||
const char *name = NULL;
|
||
int start_page, stop_page;
|
||
int neX000, ctron, copam, bad_card;
|
||
int reg0, ret;
|
||
static unsigned version_printed;
|
||
|
||
if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
|
||
return -EBUSY;
|
||
|
||
reg0 = inb_p(ioaddr);
|
||
if (reg0 == 0xFF) {
|
||
ret = -ENODEV;
|
||
goto err_out;
|
||
}
|
||
|
||
/* Do a preliminary verification that we have a 8390. */
|
||
{
|
||
int regd;
|
||
outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
|
||
regd = inb_p(ioaddr + 0x0d);
|
||
outb_p(0xff, ioaddr + 0x0d);
|
||
outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
|
||
inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
|
||
if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
|
||
outb_p(reg0, ioaddr);
|
||
outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
|
||
ret = -ENODEV;
|
||
goto err_out;
|
||
}
|
||
}
|
||
|
||
if (ei_debug && version_printed++ == 0)
|
||
printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
|
||
|
||
printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
|
||
|
||
/* A user with a poor card that fails to ack the reset, or that
|
||
does not have a valid 0x57,0x57 signature can still use this
|
||
without having to recompile. Specifying an i/o address along
|
||
with an otherwise unused dev->mem_end value of "0xBAD" will
|
||
cause the driver to skip these parts of the probe. */
|
||
|
||
bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
|
||
|
||
/* Reset card. Who knows what dain-bramaged state it was left in. */
|
||
|
||
{
|
||
unsigned long reset_start_time = jiffies;
|
||
|
||
/* DON'T change these to inb_p/outb_p or reset will fail on clones. */
|
||
outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
|
||
|
||
while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
|
||
if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
|
||
if (bad_card) {
|
||
printk(" (warning: no reset ack)");
|
||
break;
|
||
} else {
|
||
printk(" not found (no reset ack).\n");
|
||
ret = -ENODEV;
|
||
goto err_out;
|
||
}
|
||
}
|
||
|
||
outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
|
||
}
|
||
|
||
/* Read the 16 bytes of station address PROM.
|
||
We must first initialize registers, similar to NS8390_init(eifdev, 0).
|
||
We can't reliably read the SAPROM address without this.
|
||
(I learned the hard way!). */
|
||
{
|
||
struct {unsigned char value, offset; } program_seq[] =
|
||
{
|
||
{E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
|
||
{0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
|
||
{0x00, EN0_RCNTLO}, /* Clear the count regs. */
|
||
{0x00, EN0_RCNTHI},
|
||
{0x00, EN0_IMR}, /* Mask completion irq. */
|
||
{0xFF, EN0_ISR},
|
||
{E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
|
||
{E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
|
||
{32, EN0_RCNTLO},
|
||
{0x00, EN0_RCNTHI},
|
||
{0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
|
||
{0x00, EN0_RSARHI},
|
||
{E8390_RREAD+E8390_START, E8390_CMD},
|
||
};
|
||
|
||
for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
|
||
outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
|
||
|
||
}
|
||
for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
|
||
SA_prom[i] = inb(ioaddr + NE_DATAPORT);
|
||
SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
|
||
if (SA_prom[i] != SA_prom[i+1])
|
||
wordlength = 1;
|
||
}
|
||
|
||
if (wordlength == 2)
|
||
{
|
||
for (i = 0; i < 16; i++)
|
||
SA_prom[i] = SA_prom[i+i];
|
||
/* We must set the 8390 for word mode. */
|
||
outb_p(DCR_VAL, ioaddr + EN0_DCFG);
|
||
start_page = NESM_START_PG;
|
||
|
||
/*
|
||
* Realtek RTL8019AS datasheet says that the PSTOP register
|
||
* shouldn't exceed 0x60 in 8-bit mode.
|
||
* This chip can be identified by reading the signature from
|
||
* the remote byte count registers (otherwise write-only)...
|
||
*/
|
||
if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
|
||
inb(ioaddr + EN0_RCNTLO) == 0x50 &&
|
||
inb(ioaddr + EN0_RCNTHI) == 0x70)
|
||
stop_page = 0x60;
|
||
else
|
||
stop_page = NESM_STOP_PG;
|
||
} else {
|
||
start_page = NE1SM_START_PG;
|
||
stop_page = NE1SM_STOP_PG;
|
||
}
|
||
|
||
#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
|
||
neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
|
||
|| (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
|
||
#else
|
||
neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
|
||
#endif
|
||
ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
|
||
copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
|
||
|
||
/* Set up the rest of the parameters. */
|
||
if (neX000 || bad_card || copam) {
|
||
name = (wordlength == 2) ? "NE2000" : "NE1000";
|
||
}
|
||
else if (ctron)
|
||
{
|
||
name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
|
||
start_page = 0x01;
|
||
stop_page = (wordlength == 2) ? 0x40 : 0x20;
|
||
}
|
||
else
|
||
{
|
||
#ifdef SUPPORT_NE_BAD_CLONES
|
||
/* Ack! Well, there might be a *bad* NE*000 clone there.
|
||
Check for total bogus addresses. */
|
||
for (i = 0; bad_clone_list[i].name8; i++)
|
||
{
|
||
if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
|
||
SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
|
||
SA_prom[2] == bad_clone_list[i].SAprefix[2])
|
||
{
|
||
if (wordlength == 2)
|
||
{
|
||
name = bad_clone_list[i].name16;
|
||
} else {
|
||
name = bad_clone_list[i].name8;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
if (bad_clone_list[i].name8 == NULL)
|
||
{
|
||
printk(" not found (invalid signature %2.2x %2.2x).\n",
|
||
SA_prom[14], SA_prom[15]);
|
||
ret = -ENXIO;
|
||
goto err_out;
|
||
}
|
||
#else
|
||
printk(" not found.\n");
|
||
ret = -ENXIO;
|
||
goto err_out;
|
||
#endif
|
||
}
|
||
|
||
if (dev->irq < 2)
|
||
{
|
||
unsigned long cookie = probe_irq_on();
|
||
outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
|
||
outb_p(0x00, ioaddr + EN0_RCNTLO);
|
||
outb_p(0x00, ioaddr + EN0_RCNTHI);
|
||
outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
|
||
mdelay(10); /* wait 10ms for interrupt to propagate */
|
||
outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
|
||
dev->irq = probe_irq_off(cookie);
|
||
if (ei_debug > 2)
|
||
printk(" autoirq is %d\n", dev->irq);
|
||
} else if (dev->irq == 2)
|
||
/* Fixup for users that don't know that IRQ 2 is really IRQ 9,
|
||
or don't know which one to set. */
|
||
dev->irq = 9;
|
||
|
||
if (! dev->irq) {
|
||
printk(" failed to detect IRQ line.\n");
|
||
ret = -EAGAIN;
|
||
goto err_out;
|
||
}
|
||
|
||
/* Snarf the interrupt now. There's no point in waiting since we cannot
|
||
share and the board will usually be enabled. */
|
||
ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
|
||
if (ret) {
|
||
printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
|
||
goto err_out;
|
||
}
|
||
|
||
dev->base_addr = ioaddr;
|
||
|
||
#ifdef CONFIG_PLAT_MAPPI
|
||
outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
|
||
ioaddr + E8390_CMD); /* 0x61 */
|
||
for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
|
||
dev->dev_addr[i] = SA_prom[i]
|
||
= inb_p(ioaddr + EN1_PHYS_SHIFT(i));
|
||
printk(" %2.2x", SA_prom[i]);
|
||
}
|
||
#else
|
||
for(i = 0; i < ETHER_ADDR_LEN; i++) {
|
||
printk(" %2.2x", SA_prom[i]);
|
||
dev->dev_addr[i] = SA_prom[i];
|
||
}
|
||
#endif
|
||
|
||
printk("\n%s: %s found at %#x, using IRQ %d.\n",
|
||
dev->name, name, ioaddr, dev->irq);
|
||
|
||
ei_status.name = name;
|
||
ei_status.tx_start_page = start_page;
|
||
ei_status.stop_page = stop_page;
|
||
|
||
/* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
|
||
ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
|
||
|
||
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 = 0;
|
||
dev->open = &ne_open;
|
||
dev->stop = &ne_close;
|
||
#ifdef CONFIG_NET_POLL_CONTROLLER
|
||
dev->poll_controller = ei_poll;
|
||
#endif
|
||
NS8390_init(dev, 0);
|
||
|
||
ret = register_netdev(dev);
|
||
if (ret)
|
||
goto out_irq;
|
||
return 0;
|
||
|
||
out_irq:
|
||
free_irq(dev->irq, dev);
|
||
err_out:
|
||
release_region(ioaddr, NE_IO_EXTENT);
|
||
return ret;
|
||
}
|
||
|
||
static int ne_open(struct net_device *dev)
|
||
{
|
||
ei_open(dev);
|
||
return 0;
|
||
}
|
||
|
||
static int ne_close(struct net_device *dev)
|
||
{
|
||
if (ei_debug > 1)
|
||
printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
|
||
ei_close(dev);
|
||
return 0;
|
||
}
|
||
|
||
/* 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(KERN_DEBUG "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(KERN_WARNING "%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(KERN_EMERG "%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;
|
||
|
||
le16_to_cpus(&hdr->count);
|
||
}
|
||
|
||
/* 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(KERN_EMERG "%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(KERN_WARNING "%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(KERN_EMERG "%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. */
|
||
udelay(6);
|
||
#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(KERN_WARNING "%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(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
|
||
ne_reset_8390(dev);
|
||
NS8390_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_param_array(io, int, NULL, 0);
|
||
module_param_array(irq, int, NULL, 0);
|
||
module_param_array(bad, int, NULL, 0);
|
||
MODULE_PARM_DESC(io, "I/O base address(es),required");
|
||
MODULE_PARM_DESC(irq, "IRQ number(s)");
|
||
MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
|
||
MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
|
||
MODULE_LICENSE("GPL");
|
||
|
||
/* This is set up so that no ISA autoprobe takes place. We can't guarantee
|
||
that the ne2k probe is the last 8390 based probe to take place (as it
|
||
is at boot) and so the probe will get confused by any other 8390 cards.
|
||
ISA device autoprobes on a running machine are not recommended anyway. */
|
||
|
||
int __init init_module(void)
|
||
{
|
||
int this_dev, found = 0;
|
||
|
||
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
|
||
struct net_device *dev = alloc_ei_netdev();
|
||
if (!dev)
|
||
break;
|
||
dev->irq = irq[this_dev];
|
||
dev->mem_end = bad[this_dev];
|
||
dev->base_addr = io[this_dev];
|
||
if (do_ne_probe(dev) == 0) {
|
||
dev_ne[found++] = dev;
|
||
continue;
|
||
}
|
||
free_netdev(dev);
|
||
if (found)
|
||
break;
|
||
if (io[this_dev] != 0)
|
||
printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
|
||
else
|
||
printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
|
||
return -ENXIO;
|
||
}
|
||
if (found)
|
||
return 0;
|
||
return -ENODEV;
|
||
}
|
||
|
||
static void cleanup_card(struct net_device *dev)
|
||
{
|
||
struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
|
||
if (idev)
|
||
pnp_device_detach(idev);
|
||
free_irq(dev->irq, dev);
|
||
release_region(dev->base_addr, NE_IO_EXTENT);
|
||
}
|
||
|
||
void 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 */
|