441 lines
13 KiB
C
441 lines
13 KiB
C
/*
|
|
* Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver
|
|
*
|
|
* (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM)
|
|
*
|
|
* ---------------------------------------------------------------------------
|
|
*
|
|
* This program is based on all the other NE2000 drivers for Linux
|
|
*
|
|
* ---------------------------------------------------------------------------
|
|
*
|
|
* 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.
|
|
*
|
|
* ---------------------------------------------------------------------------
|
|
*
|
|
* The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS
|
|
* Ethernet Controllers.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/zorro.h>
|
|
#include <linux/jiffies.h>
|
|
|
|
#include <asm/system.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/amigaints.h>
|
|
#include <asm/amigahw.h>
|
|
|
|
#include "8390.h"
|
|
|
|
|
|
#define DRV_NAME "zorro8390"
|
|
|
|
#define NE_BASE (dev->base_addr)
|
|
#define NE_CMD (0x00*2)
|
|
#define NE_DATAPORT (0x10*2) /* NatSemi-defined port window offset. */
|
|
#define NE_RESET (0x1f*2) /* Issue a read to reset, a write to clear. */
|
|
#define NE_IO_EXTENT (0x20*2)
|
|
|
|
#define NE_EN0_ISR (0x07*2)
|
|
#define NE_EN0_DCFG (0x0e*2)
|
|
|
|
#define NE_EN0_RSARLO (0x08*2)
|
|
#define NE_EN0_RSARHI (0x09*2)
|
|
#define NE_EN0_RCNTLO (0x0a*2)
|
|
#define NE_EN0_RXCR (0x0c*2)
|
|
#define NE_EN0_TXCR (0x0d*2)
|
|
#define NE_EN0_RCNTHI (0x0b*2)
|
|
#define NE_EN0_IMR (0x0f*2)
|
|
|
|
#define NESM_START_PG 0x40 /* First page of TX buffer */
|
|
#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
|
|
|
|
|
|
#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8))
|
|
|
|
|
|
static struct card_info {
|
|
zorro_id id;
|
|
const char *name;
|
|
unsigned int offset;
|
|
} cards[] __devinitdata = {
|
|
{ ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
|
|
{ ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
|
|
};
|
|
|
|
static int __devinit zorro8390_init_one(struct zorro_dev *z,
|
|
const struct zorro_device_id *ent);
|
|
static int __devinit zorro8390_init(struct net_device *dev,
|
|
unsigned long board, const char *name,
|
|
unsigned long ioaddr);
|
|
static int zorro8390_open(struct net_device *dev);
|
|
static int zorro8390_close(struct net_device *dev);
|
|
static void zorro8390_reset_8390(struct net_device *dev);
|
|
static void zorro8390_get_8390_hdr(struct net_device *dev,
|
|
struct e8390_pkt_hdr *hdr, int ring_page);
|
|
static void zorro8390_block_input(struct net_device *dev, int count,
|
|
struct sk_buff *skb, int ring_offset);
|
|
static void zorro8390_block_output(struct net_device *dev, const int count,
|
|
const unsigned char *buf,
|
|
const int start_page);
|
|
static void __devexit zorro8390_remove_one(struct zorro_dev *z);
|
|
|
|
static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = {
|
|
{ ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, },
|
|
{ ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, },
|
|
{ 0 }
|
|
};
|
|
|
|
static struct zorro_driver zorro8390_driver = {
|
|
.name = "zorro8390",
|
|
.id_table = zorro8390_zorro_tbl,
|
|
.probe = zorro8390_init_one,
|
|
.remove = __devexit_p(zorro8390_remove_one),
|
|
};
|
|
|
|
static int __devinit zorro8390_init_one(struct zorro_dev *z,
|
|
const struct zorro_device_id *ent)
|
|
{
|
|
struct net_device *dev;
|
|
unsigned long board, ioaddr;
|
|
int err, i;
|
|
|
|
for (i = ARRAY_SIZE(cards)-1; i >= 0; i--)
|
|
if (z->id == cards[i].id)
|
|
break;
|
|
board = z->resource.start;
|
|
ioaddr = board+cards[i].offset;
|
|
dev = alloc_ei_netdev();
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
SET_MODULE_OWNER(dev);
|
|
if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) {
|
|
free_netdev(dev);
|
|
return -EBUSY;
|
|
}
|
|
if ((err = zorro8390_init(dev, board, cards[i].name,
|
|
ZTWO_VADDR(ioaddr)))) {
|
|
release_mem_region(ioaddr, NE_IO_EXTENT*2);
|
|
free_netdev(dev);
|
|
return err;
|
|
}
|
|
zorro_set_drvdata(z, dev);
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit zorro8390_init(struct net_device *dev,
|
|
unsigned long board, const char *name,
|
|
unsigned long ioaddr)
|
|
{
|
|
int i;
|
|
int err;
|
|
unsigned char SA_prom[32];
|
|
int start_page, stop_page;
|
|
static u32 zorro8390_offsets[16] = {
|
|
0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
|
|
0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
|
|
};
|
|
|
|
/* Reset card. Who knows what dain-bramaged state it was left in. */
|
|
{
|
|
unsigned long reset_start_time = jiffies;
|
|
|
|
z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);
|
|
|
|
while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
|
|
if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
|
|
printk(KERN_WARNING " not found (no reset ack).\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
z_writeb(0xff, ioaddr + NE_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 {
|
|
u32 value;
|
|
u32 offset;
|
|
} program_seq[] = {
|
|
{E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
|
|
{0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */
|
|
{0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */
|
|
{0x00, NE_EN0_RCNTHI},
|
|
{0x00, NE_EN0_IMR}, /* Mask completion irq. */
|
|
{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},
|
|
{0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */
|
|
{0x00, NE_EN0_RSARHI},
|
|
{E8390_RREAD+E8390_START, NE_CMD},
|
|
};
|
|
for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) {
|
|
z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
|
|
}
|
|
}
|
|
for (i = 0; i < 16; i++) {
|
|
SA_prom[i] = z_readb(ioaddr + NE_DATAPORT);
|
|
(void)z_readb(ioaddr + NE_DATAPORT);
|
|
}
|
|
|
|
/* We must set the 8390 for word mode. */
|
|
z_writeb(0x49, ioaddr + NE_EN0_DCFG);
|
|
start_page = NESM_START_PG;
|
|
stop_page = NESM_STOP_PG;
|
|
|
|
dev->base_addr = ioaddr;
|
|
dev->irq = IRQ_AMIGA_PORTS;
|
|
|
|
/* Install the Interrupt handler */
|
|
i = request_irq(IRQ_AMIGA_PORTS, ei_interrupt, SA_SHIRQ, DRV_NAME, dev);
|
|
if (i) return i;
|
|
|
|
for(i = 0; i < ETHER_ADDR_LEN; i++) {
|
|
#ifdef DEBUG
|
|
printk(" %2.2x", SA_prom[i]);
|
|
#endif
|
|
dev->dev_addr[i] = SA_prom[i];
|
|
}
|
|
|
|
ei_status.name = name;
|
|
ei_status.tx_start_page = start_page;
|
|
ei_status.stop_page = stop_page;
|
|
ei_status.word16 = 1;
|
|
|
|
ei_status.rx_start_page = start_page + TX_PAGES;
|
|
|
|
ei_status.reset_8390 = &zorro8390_reset_8390;
|
|
ei_status.block_input = &zorro8390_block_input;
|
|
ei_status.block_output = &zorro8390_block_output;
|
|
ei_status.get_8390_hdr = &zorro8390_get_8390_hdr;
|
|
ei_status.reg_offset = zorro8390_offsets;
|
|
dev->open = &zorro8390_open;
|
|
dev->stop = &zorro8390_close;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
dev->poll_controller = ei_poll;
|
|
#endif
|
|
|
|
NS8390_init(dev, 0);
|
|
err = register_netdev(dev);
|
|
if (err) {
|
|
free_irq(IRQ_AMIGA_PORTS, dev);
|
|
return err;
|
|
}
|
|
|
|
printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address "
|
|
"%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, name, board,
|
|
dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
|
|
dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zorro8390_open(struct net_device *dev)
|
|
{
|
|
ei_open(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int zorro8390_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 zorro8390_reset_8390(struct net_device *dev)
|
|
{
|
|
unsigned long reset_start_time = jiffies;
|
|
|
|
if (ei_debug > 1)
|
|
printk(KERN_DEBUG "resetting the 8390 t=%ld...\n", jiffies);
|
|
|
|
z_writeb(z_readb(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 ((z_readb(NE_BASE+NE_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;
|
|
}
|
|
z_writeb(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 zorro8390_get_8390_hdr(struct net_device *dev,
|
|
struct e8390_pkt_hdr *hdr, int ring_page)
|
|
{
|
|
int nic_base = dev->base_addr;
|
|
int cnt;
|
|
short *ptrs;
|
|
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing) {
|
|
printk(KERN_ERR "%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;
|
|
z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
|
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
|
|
z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
|
|
z_writeb(0, nic_base + NE_EN0_RCNTHI);
|
|
z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
|
|
z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
|
|
z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
|
|
ptrs = (short*)hdr;
|
|
for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
|
|
*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
|
|
|
|
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
|
|
|
|
hdr->count = WORDSWAP(hdr->count);
|
|
|
|
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 z_writeb. */
|
|
|
|
static void zorro8390_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;
|
|
short *ptrs;
|
|
int cnt;
|
|
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing) {
|
|
printk(KERN_ERR "%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;
|
|
z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
|
|
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
|
|
z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
|
|
z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
|
|
z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
|
|
z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
|
|
z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
ptrs = (short*)buf;
|
|
for (cnt = 0; cnt < (count>>1); cnt++)
|
|
*ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
|
|
if (count & 0x01)
|
|
buf[count-1] = z_readb(NE_BASE + NE_DATAPORT);
|
|
|
|
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
}
|
|
|
|
static void zorro8390_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;
|
|
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 (count & 0x01)
|
|
count++;
|
|
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing) {
|
|
printk(KERN_ERR "%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... */
|
|
z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
|
|
|
|
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
|
|
|
|
/* Now the normal output. */
|
|
z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
|
|
z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
|
|
z_writeb(0x00, nic_base + NE_EN0_RSARLO);
|
|
z_writeb(start_page, nic_base + NE_EN0_RSARHI);
|
|
|
|
z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
|
|
ptrs = (short*)buf;
|
|
for (cnt = 0; cnt < count>>1; cnt++)
|
|
z_writew(*ptrs++, NE_BASE+NE_DATAPORT);
|
|
|
|
dma_start = jiffies;
|
|
|
|
while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
|
|
if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
|
|
printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n",
|
|
dev->name);
|
|
zorro8390_reset_8390(dev);
|
|
NS8390_init(dev,1);
|
|
break;
|
|
}
|
|
|
|
z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
return;
|
|
}
|
|
|
|
static void __devexit zorro8390_remove_one(struct zorro_dev *z)
|
|
{
|
|
struct net_device *dev = zorro_get_drvdata(z);
|
|
|
|
unregister_netdev(dev);
|
|
free_irq(IRQ_AMIGA_PORTS, dev);
|
|
release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2);
|
|
free_netdev(dev);
|
|
}
|
|
|
|
static int __init zorro8390_init_module(void)
|
|
{
|
|
return zorro_register_driver(&zorro8390_driver);
|
|
}
|
|
|
|
static void __exit zorro8390_cleanup_module(void)
|
|
{
|
|
zorro_unregister_driver(&zorro8390_driver);
|
|
}
|
|
|
|
module_init(zorro8390_init_module);
|
|
module_exit(zorro8390_cleanup_module);
|
|
|
|
MODULE_LICENSE("GPL");
|