/*
|
* Amiga Linux/68k 8390 based PCMCIA Ethernet Driver for the Amiga 1200
|
*
|
* (C) Copyright 1997 Alain Malek
|
* (Alain.Malek@cryogen.com)
|
*
|
* ----------------------------------------------------------------------------
|
*
|
* This program is based on
|
*
|
* ne.c: A general non-shared-memory NS8390 ethernet driver for linux
|
* Written 1992-94 by Donald Becker.
|
*
|
* 8390.c: A general NS8390 ethernet driver core for linux.
|
* Written 1992-94 by Donald Becker.
|
*
|
* cnetdevice: A Sana-II ethernet driver for AmigaOS
|
* Written by Bruce Abbott (bhabbott@inhb.co.nz)
|
*
|
* ----------------------------------------------------------------------------
|
*
|
* This file is subject to the terms and conditions of the GNU General Public
|
* License. See the file COPYING in the main directory of the Linux
|
* distribution for more details.
|
*
|
* ----------------------------------------------------------------------------
|
*
|
*/
|
|
|
#include <linux/module.h>
|
#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/interrupt.h>
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#include <linux/jiffies.h>
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|
#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/amigaints.h>
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#include <asm/amigahw.h>
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#include <asm/amigayle.h>
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#include <asm/amipcmcia.h>
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|
#include "8390.h"
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|
/* ---- No user-serviceable parts below ---- */
|
|
#define DRV_NAME "apne"
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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. */
|
#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
|
#define NE_IO_EXTENT 0x20
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|
#define NE_EN0_ISR 0x07
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#define NE_EN0_DCFG 0x0e
|
|
#define NE_EN0_RSARLO 0x08
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#define NE_EN0_RSARHI 0x09
|
#define NE_EN0_RCNTLO 0x0a
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#define NE_EN0_RXCR 0x0c
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#define NE_EN0_TXCR 0x0d
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#define NE_EN0_RCNTHI 0x0b
|
#define NE_EN0_IMR 0x0f
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|
#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 */
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#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
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|
|
struct net_device * __init apne_probe(int unit);
|
static int apne_probe1(struct net_device *dev, int ioaddr);
|
|
static void apne_reset_8390(struct net_device *dev);
|
static void apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
|
int ring_page);
|
static void apne_block_input(struct net_device *dev, int count,
|
struct sk_buff *skb, int ring_offset);
|
static void apne_block_output(struct net_device *dev, const int count,
|
const unsigned char *buf, const int start_page);
|
static irqreturn_t apne_interrupt(int irq, void *dev_id);
|
|
static int init_pcmcia(void);
|
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/* IO base address used for nic */
|
|
#define IOBASE 0x300
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|
/*
|
use MANUAL_CONFIG and MANUAL_OFFSET for enabling IO by hand
|
you can find the values to use by looking at the cnet.device
|
config file example (the default values are for the CNET40BC card)
|
*/
|
|
/*
|
#define MANUAL_CONFIG 0x20
|
#define MANUAL_OFFSET 0x3f8
|
|
#define MANUAL_HWADDR0 0x00
|
#define MANUAL_HWADDR1 0x12
|
#define MANUAL_HWADDR2 0x34
|
#define MANUAL_HWADDR3 0x56
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#define MANUAL_HWADDR4 0x78
|
#define MANUAL_HWADDR5 0x9a
|
*/
|
|
static const char version[] =
|
"apne.c:v1.1 7/10/98 Alain Malek (Alain.Malek@cryogen.ch)\n";
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|
static int apne_owned; /* signal if card already owned */
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|
static u32 apne_msg_enable;
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module_param_named(msg_enable, apne_msg_enable, uint, 0444);
|
MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
|
|
struct net_device * __init apne_probe(int unit)
|
{
|
struct net_device *dev;
|
struct ei_device *ei_local;
|
|
#ifndef MANUAL_CONFIG
|
char tuple[8];
|
#endif
|
int err;
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|
if (!MACH_IS_AMIGA)
|
return ERR_PTR(-ENODEV);
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|
if (apne_owned)
|
return ERR_PTR(-ENODEV);
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|
if ( !(AMIGAHW_PRESENT(PCMCIA)) )
|
return ERR_PTR(-ENODEV);
|
|
pr_info("Looking for PCMCIA ethernet card : ");
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|
/* check if a card is inserted */
|
if (!(PCMCIA_INSERTED)) {
|
pr_cont("NO PCMCIA card inserted\n");
|
return ERR_PTR(-ENODEV);
|
}
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|
dev = alloc_ei_netdev();
|
if (!dev)
|
return ERR_PTR(-ENOMEM);
|
if (unit >= 0) {
|
sprintf(dev->name, "eth%d", unit);
|
netdev_boot_setup_check(dev);
|
}
|
ei_local = netdev_priv(dev);
|
ei_local->msg_enable = apne_msg_enable;
|
|
/* disable pcmcia irq for readtuple */
|
pcmcia_disable_irq();
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|
#ifndef MANUAL_CONFIG
|
if ((pcmcia_copy_tuple(CISTPL_FUNCID, tuple, 8) < 3) ||
|
(tuple[2] != CISTPL_FUNCID_NETWORK)) {
|
pr_cont("not an ethernet card\n");
|
/* XXX: shouldn't we re-enable irq here? */
|
free_netdev(dev);
|
return ERR_PTR(-ENODEV);
|
}
|
#endif
|
|
pr_cont("ethernet PCMCIA card inserted\n");
|
|
if (!init_pcmcia()) {
|
/* XXX: shouldn't we re-enable irq here? */
|
free_netdev(dev);
|
return ERR_PTR(-ENODEV);
|
}
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|
if (!request_region(IOBASE, 0x20, DRV_NAME)) {
|
free_netdev(dev);
|
return ERR_PTR(-EBUSY);
|
}
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|
err = apne_probe1(dev, IOBASE);
|
if (err) {
|
release_region(IOBASE, 0x20);
|
free_netdev(dev);
|
return ERR_PTR(err);
|
}
|
err = register_netdev(dev);
|
if (!err)
|
return dev;
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|
pcmcia_disable_irq();
|
free_irq(IRQ_AMIGA_PORTS, dev);
|
pcmcia_reset();
|
release_region(IOBASE, 0x20);
|
free_netdev(dev);
|
return ERR_PTR(err);
|
}
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|
static int __init apne_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;
|
#ifndef MANUAL_HWADDR0
|
int neX000, ctron;
|
#endif
|
static unsigned version_printed;
|
|
if ((apne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
|
netdev_info(dev, version);
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|
netdev_info(dev, "PCMCIA NE*000 ethercard probe");
|
|
/* Reset card. Who knows what dain-bramaged state it was left in. */
|
{ unsigned long reset_start_time = jiffies;
|
|
outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
|
|
while ((inb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
|
if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
|
pr_cont(" not found (no reset ack).\n");
|
return -ENODEV;
|
}
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|
outb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
|
}
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#ifndef MANUAL_HWADDR0
|
|
/* 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 long value, offset; } program_seq[] = {
|
{E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
|
{0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */
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{0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */
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{0x00, NE_EN0_RCNTHI},
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{0x00, NE_EN0_IMR}, /* Mask completion irq. */
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{0xFF, NE_EN0_ISR},
|
{E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */
|
{E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */
|
{32, NE_EN0_RCNTLO},
|
{0x00, NE_EN0_RCNTHI},
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{0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */
|
{0x00, NE_EN0_RSARHI},
|
{E8390_RREAD+E8390_START, NE_CMD},
|
};
|
for (i = 0; i < ARRAY_SIZE(program_seq); i++) {
|
outb(program_seq[i].value, ioaddr + program_seq[i].offset);
|
}
|
|
}
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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;
|
}
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|
/* At this point, wordlength *only* tells us if the SA_prom is doubled
|
up or not because some broken PCI cards don't respect the byte-wide
|
request in program_seq above, and hence don't have doubled up values.
|
These broken cards would otherwise be detected as an ne1000. */
|
|
if (wordlength == 2)
|
for (i = 0; i < 16; i++)
|
SA_prom[i] = SA_prom[i+i];
|
|
if (wordlength == 2) {
|
/* We must set the 8390 for word mode. */
|
outb(0x49, ioaddr + NE_EN0_DCFG);
|
start_page = NESM_START_PG;
|
stop_page = NESM_STOP_PG;
|
} else {
|
start_page = NE1SM_START_PG;
|
stop_page = NE1SM_STOP_PG;
|
}
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|
neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
|
ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
|
|
/* Set up the rest of the parameters. */
|
if (neX000) {
|
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 {
|
pr_cont(" not found.\n");
|
return -ENXIO;
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|
}
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|
#else
|
wordlength = 2;
|
/* We must set the 8390 for word mode. */
|
outb(0x49, ioaddr + NE_EN0_DCFG);
|
start_page = NESM_START_PG;
|
stop_page = NESM_STOP_PG;
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|
SA_prom[0] = MANUAL_HWADDR0;
|
SA_prom[1] = MANUAL_HWADDR1;
|
SA_prom[2] = MANUAL_HWADDR2;
|
SA_prom[3] = MANUAL_HWADDR3;
|
SA_prom[4] = MANUAL_HWADDR4;
|
SA_prom[5] = MANUAL_HWADDR5;
|
name = "NE2000";
|
#endif
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|
dev->base_addr = ioaddr;
|
dev->irq = IRQ_AMIGA_PORTS;
|
dev->netdev_ops = &ei_netdev_ops;
|
|
/* Install the Interrupt handler */
|
i = request_irq(dev->irq, apne_interrupt, IRQF_SHARED, DRV_NAME, dev);
|
if (i) return i;
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|
for (i = 0; i < ETH_ALEN; i++)
|
dev->dev_addr[i] = SA_prom[i];
|
|
pr_cont(" %pM\n", dev->dev_addr);
|
|
netdev_info(dev, "%s found.\n", name);
|
|
ei_status.name = name;
|
ei_status.tx_start_page = start_page;
|
ei_status.stop_page = stop_page;
|
ei_status.word16 = (wordlength == 2);
|
|
ei_status.rx_start_page = start_page + TX_PAGES;
|
|
ei_status.reset_8390 = &apne_reset_8390;
|
ei_status.block_input = &apne_block_input;
|
ei_status.block_output = &apne_block_output;
|
ei_status.get_8390_hdr = &apne_get_8390_hdr;
|
|
NS8390_init(dev, 0);
|
|
pcmcia_ack_int(pcmcia_get_intreq()); /* ack PCMCIA int req */
|
pcmcia_enable_irq();
|
|
apne_owned = 1;
|
|
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
|
apne_reset_8390(struct net_device *dev)
|
{
|
unsigned long reset_start_time = jiffies;
|
struct ei_device *ei_local = netdev_priv(dev);
|
|
init_pcmcia();
|
|
netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
|
|
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(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
|
if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
|
netdev_err(dev, "ne_reset_8390() did not complete.\n");
|
break;
|
}
|
outb(ENISR_RESET, NE_BASE + NE_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
|
apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
|
{
|
|
int nic_base = dev->base_addr;
|
int cnt;
|
char *ptrc;
|
short *ptrs;
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
if (ei_status.dmaing) {
|
netdev_err(dev, "DMAing conflict in ne_get_8390_hdr "
|
"[DMAstat:%d][irqlock:%d][intr:%d].\n",
|
ei_status.dmaing, ei_status.irqlock, dev->irq);
|
return;
|
}
|
|
ei_status.dmaing |= 0x01;
|
outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR);
|
outb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
|
outb(0, nic_base + NE_EN0_RCNTHI);
|
outb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
|
outb(ring_page, nic_base + NE_EN0_RSARHI);
|
outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
if (ei_status.word16) {
|
ptrs = (short*)hdr;
|
for(cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
|
*ptrs++ = inw(NE_BASE + NE_DATAPORT);
|
} else {
|
ptrc = (char*)hdr;
|
for(cnt = 0; cnt < sizeof(struct e8390_pkt_hdr); cnt++)
|
*ptrc++ = inb(NE_BASE + NE_DATAPORT);
|
}
|
|
outb(ENISR_RDC, nic_base + NE_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
|
apne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
|
{
|
int nic_base = dev->base_addr;
|
char *buf = skb->data;
|
char *ptrc;
|
short *ptrs;
|
int cnt;
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
if (ei_status.dmaing) {
|
netdev_err(dev, "DMAing conflict in ne_block_input "
|
"[DMAstat:%d][irqlock:%d][intr:%d].\n",
|
ei_status.dmaing, ei_status.irqlock, dev->irq);
|
return;
|
}
|
ei_status.dmaing |= 0x01;
|
outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR);
|
outb(count & 0xff, nic_base + NE_EN0_RCNTLO);
|
outb(count >> 8, nic_base + NE_EN0_RCNTHI);
|
outb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
|
outb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
|
outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
if (ei_status.word16) {
|
ptrs = (short*)buf;
|
for (cnt = 0; cnt < (count>>1); cnt++)
|
*ptrs++ = inw(NE_BASE + NE_DATAPORT);
|
if (count & 0x01) {
|
buf[count-1] = inb(NE_BASE + NE_DATAPORT);
|
}
|
} else {
|
ptrc = buf;
|
for (cnt = 0; cnt < count; cnt++)
|
*ptrc++ = inb(NE_BASE + NE_DATAPORT);
|
}
|
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
|
ei_status.dmaing &= ~0x01;
|
}
|
|
static void
|
apne_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;
|
char *ptrc;
|
short *ptrs;
|
int cnt;
|
|
/* 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) {
|
netdev_err(dev, "DMAing conflict in ne_block_output."
|
"[DMAstat:%d][irqlock:%d][intr:%d]\n",
|
ei_status.dmaing, ei_status.irqlock, dev->irq);
|
return;
|
}
|
ei_status.dmaing |= 0x01;
|
/* We should already be in page 0, but to be safe... */
|
outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
|
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR);
|
|
/* Now the normal output. */
|
outb(count & 0xff, nic_base + NE_EN0_RCNTLO);
|
outb(count >> 8, nic_base + NE_EN0_RCNTHI);
|
outb(0x00, nic_base + NE_EN0_RSARLO);
|
outb(start_page, nic_base + NE_EN0_RSARHI);
|
|
outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
|
if (ei_status.word16) {
|
ptrs = (short*)buf;
|
for (cnt = 0; cnt < count>>1; cnt++)
|
outw(*ptrs++, NE_BASE+NE_DATAPORT);
|
} else {
|
ptrc = (char*)buf;
|
for (cnt = 0; cnt < count; cnt++)
|
outb(*ptrc++, NE_BASE + NE_DATAPORT);
|
}
|
|
dma_start = jiffies;
|
|
while ((inb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
|
if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
|
netdev_warn(dev, "timeout waiting for Tx RDC.\n");
|
apne_reset_8390(dev);
|
NS8390_init(dev,1);
|
break;
|
}
|
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
|
ei_status.dmaing &= ~0x01;
|
}
|
|
static irqreturn_t apne_interrupt(int irq, void *dev_id)
|
{
|
unsigned char pcmcia_intreq;
|
|
if (!(gayle.inten & GAYLE_IRQ_IRQ))
|
return IRQ_NONE;
|
|
pcmcia_intreq = pcmcia_get_intreq();
|
|
if (!(pcmcia_intreq & GAYLE_IRQ_IRQ)) {
|
pcmcia_ack_int(pcmcia_intreq);
|
return IRQ_NONE;
|
}
|
if (apne_msg_enable & NETIF_MSG_INTR)
|
pr_debug("pcmcia intreq = %x\n", pcmcia_intreq);
|
pcmcia_disable_irq(); /* to get rid of the sti() within ei_interrupt */
|
ei_interrupt(irq, dev_id);
|
pcmcia_ack_int(pcmcia_get_intreq());
|
pcmcia_enable_irq();
|
return IRQ_HANDLED;
|
}
|
|
#ifdef MODULE
|
static struct net_device *apne_dev;
|
|
static int __init apne_module_init(void)
|
{
|
apne_dev = apne_probe(-1);
|
return PTR_ERR_OR_ZERO(apne_dev);
|
}
|
|
static void __exit apne_module_exit(void)
|
{
|
unregister_netdev(apne_dev);
|
|
pcmcia_disable_irq();
|
|
free_irq(IRQ_AMIGA_PORTS, apne_dev);
|
|
pcmcia_reset();
|
|
release_region(IOBASE, 0x20);
|
|
free_netdev(apne_dev);
|
}
|
module_init(apne_module_init);
|
module_exit(apne_module_exit);
|
#endif
|
|
static int init_pcmcia(void)
|
{
|
u_char config;
|
#ifndef MANUAL_CONFIG
|
u_char tuple[32];
|
int offset_len;
|
#endif
|
u_long offset;
|
|
pcmcia_reset();
|
pcmcia_program_voltage(PCMCIA_0V);
|
pcmcia_access_speed(PCMCIA_SPEED_250NS);
|
pcmcia_write_enable();
|
|
#ifdef MANUAL_CONFIG
|
config = MANUAL_CONFIG;
|
#else
|
/* get and write config byte to enable IO port */
|
|
if (pcmcia_copy_tuple(CISTPL_CFTABLE_ENTRY, tuple, 32) < 3)
|
return 0;
|
|
config = tuple[2] & 0x3f;
|
#endif
|
#ifdef MANUAL_OFFSET
|
offset = MANUAL_OFFSET;
|
#else
|
if (pcmcia_copy_tuple(CISTPL_CONFIG, tuple, 32) < 6)
|
return 0;
|
|
offset_len = (tuple[2] & 0x3) + 1;
|
offset = 0;
|
while(offset_len--) {
|
offset = (offset << 8) | tuple[4+offset_len];
|
}
|
#endif
|
|
out_8(GAYLE_ATTRIBUTE+offset, config);
|
|
return 1;
|
}
|
|
MODULE_LICENSE("GPL");
|
