static void ultramca_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = dev->mem_start + ((ring_page - START_PG) << 8);
#ifdef notdef
/* Officially this is what we are doing, but the readl() is faster */
isa_memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
#else
((unsigned int*)hdr)[0] = isa_readl(hdr_start);
#endif
}
/* Probe for the Etherlink II card at I/O port base IOADDR,
returning non-zero on success. If found, set the station
address and memory parameters in DEVICE. */
static int __init
el2_probe1(struct net_device *dev, int ioaddr)
{
int i, iobase_reg, membase_reg, saved_406, wordlength, retval;
static unsigned version_printed;
unsigned long vendor_id;
/* FIXME: code reads ioaddr + 0x400, we request ioaddr + 16 */
if (!request_region(ioaddr, EL2_IO_EXTENT, dev->name))
return -EBUSY;
/* Reset and/or avoid any lurking NE2000 */
if (inb(ioaddr + 0x408) == 0xff) {
mdelay(1);
retval = -ENODEV;
goto out;
}
/* We verify that it's a 3C503 board by checking the first three octets
of its ethernet address. */
iobase_reg = inb(ioaddr+0x403);
membase_reg = inb(ioaddr+0x404);
/* ASIC location registers should be 0 or have only a single bit set. */
if ( (iobase_reg & (iobase_reg - 1))
|| (membase_reg & (membase_reg - 1))) {
retval = -ENODEV;
goto out;
}
saved_406 = inb_p(ioaddr + 0x406);
outb_p(ECNTRL_RESET|ECNTRL_THIN, ioaddr + 0x406); /* Reset it... */
outb_p(ECNTRL_THIN, ioaddr + 0x406);
/* Map the station addr PROM into the lower I/O ports. We now check
for both the old and new 3Com prefix */
outb(ECNTRL_SAPROM|ECNTRL_THIN, ioaddr + 0x406);
vendor_id = inb(ioaddr)*0x10000 + inb(ioaddr + 1)*0x100 + inb(ioaddr + 2);
if ((vendor_id != OLD_3COM_ID) && (vendor_id != NEW_3COM_ID)) {
/* Restore the register we frobbed. */
outb(saved_406, ioaddr + 0x406);
retval = -ENODEV;
goto out;
}
if (ei_debug && version_printed++ == 0)
printk(version);
dev->base_addr = ioaddr;
/* Allocate dev->priv and fill in 8390 specific dev fields. */
if (ethdev_init(dev)) {
printk ("3c503: unable to allocate memory for dev->priv.\n");
retval = -ENOMEM;
goto out;
}
printk("%s: 3c503 at i/o base %#3x, node ", dev->name, ioaddr);
/* Retrieve and print the ethernet address. */
for (i = 0; i < 6; i++)
printk(" %2.2x", dev->dev_addr[i] = inb(ioaddr + i));
/* Map the 8390 back into the window. */
outb(ECNTRL_THIN, ioaddr + 0x406);
/* Check for EL2/16 as described in tech. man. */
outb_p(E8390_PAGE0, ioaddr + E8390_CMD);
outb_p(0, ioaddr + EN0_DCFG);
outb_p(E8390_PAGE2, ioaddr + E8390_CMD);
wordlength = inb_p(ioaddr + EN0_DCFG) & ENDCFG_WTS;
outb_p(E8390_PAGE0, ioaddr + E8390_CMD);
/* Probe for, turn on and clear the board's shared memory. */
if (ei_debug > 2) printk(" memory jumpers %2.2x ", membase_reg);
outb(EGACFR_NORM, ioaddr + 0x405); /* Enable RAM */
/* This should be probed for (or set via an ioctl()) at run-time.
Right now we use a sleazy hack to pass in the interface number
at boot-time via the low bits of the mem_end field. That value is
unused, and the low bits would be discarded even if it was used. */
#if defined(EI8390_THICK) || defined(EL2_AUI)
ei_status.interface_num = 1;
#else
ei_status.interface_num = dev->mem_end & 0xf;
#endif
printk(", using %sternal xcvr.\n", ei_status.interface_num == 0 ? "in" : "ex");
if ((membase_reg & 0xf0) == 0) {
dev->mem_start = 0;
ei_status.name = "3c503-PIO";
} else {
dev->mem_start = ((membase_reg & 0xc0) ? 0xD8000 : 0xC8000) +
((membase_reg & 0xA0) ? 0x4000 : 0);
#define EL2_MEMSIZE (EL2_MB1_STOP_PG - EL2_MB1_START_PG)*256
#ifdef EL2MEMTEST
/* This has never found an error, but someone might care.
Note that it only tests the 2nd 8kB on 16kB 3c503/16
cards between card addr. 0x2000 and 0x3fff. */
{ /* Check the card's memory. */
unsigned long mem_base = dev->mem_start;
unsigned int test_val = 0xbbadf00d;
isa_writel(0xba5eba5e, mem_base);
for (i = sizeof(test_val); i < EL2_MEMSIZE; i+=sizeof(test_val)) {
isa_writel(test_val, mem_base + i);
if (isa_readl(mem_base) != 0xba5eba5e
|| isa_readl(mem_base + i) != test_val) {
printk("3c503: memory failure or memory address conflict.\n");
dev->mem_start = 0;
ei_status.name = "3c503-PIO";
break;
}
test_val += 0x55555555;
isa_writel(0, mem_base + i);
}
}
#endif /* EL2MEMTEST */
if (dev->mem_start)
dev->mem_end = dev->rmem_end = dev->mem_start + EL2_MEMSIZE;
if (wordlength) { /* No Tx pages to skip over to get to Rx */
dev->rmem_start = dev->mem_start;
ei_status.name = "3c503/16";
} else {
dev->rmem_start = TX_PAGES*256 + dev->mem_start;
ei_status.name = "3c503";
}
}
/*
Divide up the memory on the card. This is the same regardless of
whether shared-mem or PIO is used. For 16 bit cards (16kB RAM),
we use the entire 8k of bank1 for an Rx ring. We only use 3k
of the bank0 for 2 full size Tx packet slots. For 8 bit cards,
(8kB RAM) we use 3kB of bank1 for two Tx slots, and the remaining
5kB for an Rx ring. */
if (wordlength) {
ei_status.tx_start_page = EL2_MB0_START_PG;
ei_status.rx_start_page = EL2_MB1_START_PG;
} else {
ei_status.tx_start_page = EL2_MB1_START_PG;
ei_status.rx_start_page = EL2_MB1_START_PG + TX_PAGES;
}
/* Finish setting the board's parameters. */
ei_status.stop_page = EL2_MB1_STOP_PG;
ei_status.word16 = wordlength;
ei_status.reset_8390 = &el2_reset_8390;
ei_status.get_8390_hdr = &el2_get_8390_hdr;
ei_status.block_input = &el2_block_input;
ei_status.block_output = &el2_block_output;
if (dev->irq == 2)
dev->irq = 9;
else if (dev->irq > 5 && dev->irq != 9) {
printk("3c503: configured interrupt %d invalid, will use autoIRQ.\n",
dev->irq);
dev->irq = 0;
}
ei_status.saved_irq = dev->irq;
dev->open = &el2_open;
dev->stop = &el2_close;
if (dev->mem_start)
printk("%s: %s - %dkB RAM, 8kB shared mem window at %#6lx-%#6lx.\n",
dev->name, ei_status.name, (wordlength+1)<<3,
dev->mem_start, dev->mem_end-1);
else
{
ei_status.tx_start_page = EL2_MB1_START_PG;
ei_status.rx_start_page = EL2_MB1_START_PG + TX_PAGES;
printk("\n%s: %s, %dkB RAM, using programmed I/O (REJUMPER for SHARED MEMORY).\n",
dev->name, ei_status.name, (wordlength+1)<<3);
}
return 0;
out:
release_region(ioaddr, EL2_IO_EXTENT);
return retval;
}
