/* smc-ultra.c: A SMC Ultra ethernet driver for linux. */
/*
This is a driver for the SMC Ultra and SMC EtherEZ ISA ethercards.
Written 1993-1996 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 Public License, incorporated herein by reference.
The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O
Center of Excellence in Space Data and Information Sciences
Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
This driver uses the cards in the 8390-compatible mode.
Most of the run-time complexity is handled by the generic code in
8390.c. The code in this file is responsible for
ultra_probe() Detecting and initializing the card.
ultra_probe1()
ultra_open() The card-specific details of starting, stopping
ultra_reset_8390() and resetting the 8390 NIC core.
ultra_close()
ultra_block_input() Routines for reading and writing blocks of
ultra_block_output() packet buffer memory.
ultra_pio_input()
ultra_pio_output()
This driver enables the shared memory only when doing the actual data
transfers to avoid a bug in early version of the card that corrupted
data transferred by a AHA1542.
This driver now supports the programmed-I/O (PIO) data transfer mode of
the EtherEZ. It does not use the non-8390-compatible "Altego" mode.
That support (if available) is in smc-ez.c.
*/
static const char *version =
"smc-ultra.c:v2.01-1.2.13 11/10/97 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
#include <linux/config.h>
#ifdef MODULE
#include <linux/module.h>
#else
#define MOD_INC_USE_COUNT
#define MOD_DEC_USE_COUNT
#endif
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <asm/io.h>
#include <asm/system.h>
#include <linux/netdevice.h>
#if LINUX_VERSION_CODE >= 0x10300
#include <linux/etherdevice.h>
#else
extern struct device *init_etherdev(struct device *dev, int sizeof_private,
unsigned long *mem_startp);
#endif
#include "8390.h"
/* A zero-terminated list of I/O addresses to be probed. */
static unsigned int ultra_portlist[] =
{0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0};
int ultra_probe(struct device *dev);
int ultra_probe1(struct device *dev, int ioaddr);
static int ultra_open(struct device *dev);
static void ultra_reset_8390(struct device *dev);
#if LINUX_VERSION_CODE >= 0x10300
static void ultra_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr,
int ring_page);
static void ultra_block_input(struct device *dev, int count,
struct sk_buff *skb, int ring_offset);
static void ultra_pio_get_hdr(struct device *dev, struct e8390_pkt_hdr *hdr,
int ring_page);
static void ultra_pio_input(struct device *dev, int count,
struct sk_buff *skb, int ring_offset);
#else
static void ultra_block_input(struct device *dev, int count,
char *buf, int ring_offset);
static void ultra_pio_input(struct device *dev, int count,
char *buf, int ring_offset);
#endif
static void ultra_block_output(struct device *dev, int count,
const unsigned char *buf, const start_page);
static void ultra_pio_output(struct device *dev, int count,
const unsigned char *buf, const start_page);
static int ultra_close_card(struct device *dev);
#define START_PG 0x00 /* First page of TX buffer */
#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
#define IOPD 0x02 /* I/O Pipe Data (16 bits), PIO operation. */
#define IOPA 0x07 /* I/O Pipe Address for PIO operation. */
#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
#define ULTRA_IO_EXTENT 32
#define EN0_ERWCNT 0x08 /* Early receive warning count. */
/* Probe for the Ultra. This looks like a 8013 with the station
address PROM at I/O ports <base>+8 to <base>+13, with a checksum
following.
*/
#ifdef HAVE_DEVLIST
struct netdev_entry ultra_drv =
{"ultra", ultra_probe1, NETCARD_IO_EXTENT, netcard_portlist};
#else
int ultra_probe(struct device *dev)
{
int i;
int base_addr = dev ? dev->base_addr : 0;
if (base_addr > 0x1ff) /* Check a single specified location. */
return ultra_probe1(dev, base_addr);
else if (base_addr != 0) /* Don't probe at all. */
return ENXIO;
for (i = 0; ultra_portlist[i]; i++) {
int ioaddr = ultra_portlist[i];
if (check_region(ioaddr, ULTRA_IO_EXTENT))
continue;
if (ultra_probe1(dev, ioaddr) == 0)
return 0;
}
return ENODEV;
}
#endif
int ultra_probe1(struct device *dev, int ioaddr)
{
int i;
int checksum = 0;
const char *model_name;
unsigned char eeprom_irq = 0;
static unsigned version_printed = 0;
/* Values from various config regs. */
unsigned char num_pages, irqreg, addr, piomode;
unsigned char idreg = inb(ioaddr + 7);
unsigned char reg4 = inb(ioaddr + 4) & 0x7f;
/* Check the ID nibble. */
if ((idreg & 0xF0) != 0x20 /* SMC Ultra */
&& (idreg & 0xF0) != 0x40) /* SMC EtherEZ */
return ENODEV;
/* Select the station address register set. */
outb(reg4, ioaddr + 4);
for (i = 0; i < 8; i++)
checksum += inb(ioaddr + 8 + i);
if ((checksum & 0xff) != 0xFF)
return ENODEV;
#if LINUX_VERSION_CODE >= 0x10300
if (dev == NULL)
dev = init_etherdev(0, 0);
#else
if (dev == NULL)
dev = init_etherdev(0, sizeof(struct ei_device), 0);
#endif
if (ei_debug && version_printed++ == 0)
printk(version);
model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ";
printk("%s: %s at %#3x,", dev->name, model_name, ioaddr);
for (i = 0; i < 6; i++)
printk(" %2.2X", dev->dev_addr[i] = inb(ioaddr + 8 + i));
/* Switch from the station address to the alternate register set and
read the useful registers there. */
outb(0x80 | reg4, ioaddr + 4);
/* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
piomode = inb(ioaddr + 0x8);
addr = inb(ioaddr + 0xb);
irqreg = inb(ioaddr + 0xd);
/* Switch back to the station address register set so that the MS-DOS driver
can find the card after a warm boot. */
outb(reg4, ioaddr + 4);
if (dev->irq < 2) {
unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
int irq;
/* The IRQ bits are split. */
irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)];
if (irq == 0) {
printk(", failed to detect IRQ line.\n");
return -EAGAIN;
}
dev->irq = irq;
eeprom_irq = 1;
}
/* Allocate dev->priv and fill in 8390 specific dev fields. */
if (ethdev_init(dev)) {
printk (", no memory for dev->priv.\n");
return -ENOMEM;
}
/* OK, we are certain this is going to work. Setup the device. */
request_region(ioaddr, ULTRA_IO_EXTENT, model_name);
/* The 8390 isn't at the base address, so fake the offset */
dev->base_addr = ioaddr+ULTRA_NIC_OFFSET;
{
int addr_tbl[4] = {0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000};
short num_pages_tbl[4] = {0x20, 0x40, 0x80, 0xff};
dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ;
num_pages = num_pages_tbl[(addr >> 4) & 3];
}
ei_status.name = model_name;
ei_status.word16 = 1;
ei_status.tx_start_page = START_PG;
ei_status.rx_start_page = START_PG + TX_PAGES;
ei_status.stop_page = num_pages;
dev->rmem_start = dev->mem_start + TX_PAGES*256;
dev->mem_end = dev->rmem_end
= dev->mem_start + (ei_status.stop_page - START_PG)*256;
if (piomode) {
printk(",%s IRQ %d programmed-I/O mode.\n",
eeprom_irq ? "EEPROM" : "assigned ", dev->irq);
ei_status.block_input = &ultra_pio_input;
ei_status.block_output = &ultra_pio_output;
#if LINUX_VERSION_CODE >= 0x10300
ei_status.get_8390_hdr = &ultra_pio_get_hdr;
#endif
} else {
printk(",%s IRQ %d memory %#lx-%#lx.\n", eeprom_irq ? "" : "assigned ",
dev->irq, dev->mem_start, dev->mem_end-1);
ei_status.block_input = &ultra_block_input;
ei_status.block_output = &ultra_block_output;
#if LINUX_VERSION_CODE >= 0x10300
ei_status.get_8390_hdr = &ultra_get_8390_hdr;
#endif
}
ei_status.reset_8390 = &ultra_reset_8390;
dev->open = &ultra_open;
dev->stop = &ultra_close_card;
NS8390_init(dev, 0);
return 0;
}
static int
ultra_open(struct device *dev)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
#ifdef SA_SHIRQ
if (request_irq(dev->irq, ei_interrupt, 0, ei_status.name, dev))
return -EAGAIN;
#else
if (request_irq(dev->irq, ei_interrupt, 0, ei_status.name))
return -EAGAIN;
#endif
outb(0x00, ioaddr); /* Disable shared memory for safety. */
outb(0x80, ioaddr + 5);
if (ei_status.block_input == &ultra_pio_input) {
outb(0x11, ioaddr + 6); /* Enable interrupts and PIO. */
outb(0x01, ioaddr + 0x19); /* Enable ring read auto-wrap. */
} else
outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
/* Set the early receive warning level in window 0 high enough not
to receive ERW interrupts. */
outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr);
outb(0xff, dev->base_addr + EN0_ERWCNT);
MOD_INC_USE_COUNT;
return ei_open(dev);
}
static void
ultra_reset_8390(struct device *dev)
{
int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */
outb(ULTRA_RESET, cmd_port);
if (ei_debug > 1) printk("resetting Ultra, t=%ld...", jiffies);
ei_status.txing = 0;
outb(0x00, cmd_port); /* Disable shared memory for safety. */
outb(0x80, cmd_port + 5);
if (ei_status.block_input == &ultra_pio_input)
outb(0x11, cmd_port + 6); /* Enable interrupts and PIO. */
else
outb(0x01, cmd_port + 6); /* Enable interrupts and memory. */
if (ei_debug > 1) printk("reset done\n");
return;
}
#if LINUX_VERSION_CODE >= 0x10300
/* 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
ultra_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = dev->mem_start + ((ring_page - START_PG)<<8);
outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem on */
#ifdef notdef
/* Officially this is what we are doing, but the readl() is faster */
memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
#else
((unsigned int*)hdr)[0] = readl(hdr_start);
#endif
outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */
}
#endif /* LINUX_VERSION_CODE >= 0x10300 */
/* Block input and output are easy on shared memory ethercards, the only
complication is when the ring buffer wraps. */
static void
ultra_block_input(struct device *dev, int count, char *buf, int ring_offset)
{
unsigned long xfer_start = dev->mem_start + ring_offset - (START_PG<<8);
/* Enable shared memory. */
outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
if (xfer_start + count > dev->rmem_end) {
/* We must wrap the input move. */
int semi_count = dev->rmem_end - xfer_start;
memcpy(buf, (void*)xfer_start, semi_count);
count -= semi_count;
memcpy(buf + semi_count, (void*)dev->rmem_start, count);
outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
return dev->rmem_start + count;
}
memcpy(buf, xfer_start, count);
outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
return;
}
static void
ultra_block_output(struct device *dev, int count, const unsigned char *buf,
int start_page)
{
unsigned long shmem = dev->mem_start + ((start_page - START_PG)<<8);
/* Enable shared memory. */
outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
#if LINUX_VERSION_CODE >= 0x10300
memcpy_toio(shmem, buf, count);
#else
memcpy((void*)shmem, buf, count);
#endif
outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
}
/* The identical operations for programmed I/O cards.
The PIO model is trivial to use: the 16 bit start address is written
byte-sequentially to IOPA, with no intervening I/O operations, and the
data is read or written to the IOPD data port.
The only potential complication is that the address register is shared
and must be always be rewritten between each read/write direction change.
This is no problem for us, as the 8390 code ensures that we are single
threaded. */
#if LINUX_VERSION_CODE >= 0x10300
static void ultra_pio_get_hdr(struct device *dev, struct e8390_pkt_hdr *hdr,
int ring_page)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
outb(ring_page, ioaddr + IOPA);
insw(ioaddr + IOPD, hdr, sizeof(struct e8390_pkt_hdr)>>1);
}
#endif
static void ultra_pio_input(struct device *dev, int count,
char *buf, int ring_offset)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
/* The chip automatically does the ring wrap for us. */
outb(ring_offset, ioaddr + IOPA); /* Set the address, LSB first. */
outb(ring_offset >> 8, ioaddr + IOPA);
/* We know skbuffs are padded to at least word alignment. */
insw(ioaddr + IOPD, buf, (count+1)>>1);
}
static void ultra_pio_output(struct device *dev, int count,
const unsigned char *buf, const start_page)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
outb(start_page, ioaddr + IOPA);
/* An extra odd byte is OK here as well. */
outsw(ioaddr + IOPD, buf, (count+1)>>1);
}
static int
ultra_close_card(struct device *dev)
{
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */
dev->start = 0;
dev->tbusy = 1;
if (ei_debug > 1)
printk("%s: Shutting down ethercard.\n", dev->name);
outb(0x00, ioaddr + 6); /* Disable interrupts. */
#ifdef SA_SHIRQ
free_irq(dev->irq, dev);
#else
free_irq(dev->irq);
#endif
irq2dev_map[dev->irq] = 0;
NS8390_init(dev, 0);
/* We should someday disable shared memory and change to 8-bit mode
"just in case"... */
MOD_DEC_USE_COUNT;
return 0;
}
#ifdef MODULE
#define MAX_ULTRA_CARDS 4 /* Max number of Ultra cards per module */
#define NAMELEN 8 /* # of chars for storing dev->name */
static char namelist[NAMELEN * MAX_ULTRA_CARDS] = { 0, };
static struct device dev_ultra[MAX_ULTRA_CARDS] = {
{
NULL, /* assign a chunk of namelist[] below */
0, 0, 0, 0,
0, 0,
0, 0, 0, NULL, NULL
},
};
static int io[MAX_ULTRA_CARDS] = { 0, };
static int irq[MAX_ULTRA_CARDS] = { 0, };
/* This is set up so that only a single autoprobe takes place per call.
ISA device autoprobes on a running machine are not recommended. */
int
init_module(void)
{
int this_dev, found = 0;
for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
struct device *dev = &dev_ultra[this_dev];
dev->name = namelist+(NAMELEN*this_dev);
dev->irq = irq[this_dev];
dev->base_addr = io[this_dev];
dev->init = ultra_probe;
if (io[this_dev] == 0) {
if (this_dev != 0) break; /* only autoprobe 1st one */
printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n");
}
if (register_netdev(dev) != 0) {
printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);
if (found != 0) return 0; /* Got at least one. */
return -ENXIO;
}
found++;
}
return 0;
}
void
cleanup_module(void)
{
int this_dev;
for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
struct device *dev = &dev_ultra[this_dev];
if (dev->priv != NULL) {
/* NB: ultra_close_card() does free_irq + irq2dev */
int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
kfree(dev->priv);
dev->priv = NULL;
release_region(ioaddr, ULTRA_IO_EXTENT);
unregister_netdev(dev);
}
}
}
#endif /* MODULE */
/*
* Local variables:
* compile-command: "gcc -D__KERNEL__ -Wall -O6 -I/usr/src/linux/net/inet -c smc-ultra.c"
* version-control: t
* kept-new-versions: 5
* c-indent-level: 4
* tab-width: 4
* End:
*/
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.