/* A zero-terminated list of I/O addresses to be probed. */ staticunsignedint wd_portlist[] __initdata =
{0x300, 0x280, 0x380, 0x240, 0};
staticint wd_probe1(struct net_device *dev, int ioaddr);
staticint wd_open(struct net_device *dev); staticvoid wd_reset_8390(struct net_device *dev); staticvoid wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page); staticvoid wd_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset); staticvoid wd_block_output(struct net_device *dev, int count, constunsignedchar *buf, int start_page); staticint wd_close(struct net_device *dev);
static u32 wd_msg_enable;
#define WD_START_PG 0x00 /* First page of TX buffer */ #define WD03_STOP_PG 0x20 /* Last page +1 of RX ring */ #define WD13_STOP_PG 0x40 /* Last page +1 of RX ring */
#define WD_CMDREG 0 /* Offset to ASIC command register. */ #define WD_RESET 0x80 /* Board reset, in WD_CMDREG. */ #define WD_MEMENB 0x40 /* Enable the shared memory. */ #define WD_CMDREG5 5 /* Offset to 16-bit-only ASIC register 5. */ #define ISA16 0x80 /* Enable 16 bit access from the ISA bus. */ #define NIC16 0x40 /* Enable 16 bit access from the 8390. */ #define WD_NIC_OFFSET 16 /* Offset to the 8390 from the base_addr. */ #define WD_IO_EXTENT 32
/* Probe for the WD8003 and WD8013. These cards have the station address PROM at I/O ports <base>+8 to <base>+13, with a checksum following. A Soundblaster can have the same checksum as an WDethercard, so we have an extra exclusionary check for it.
The wd_probe1() routine initializes the card and fills the
station address field. */
staticint __init do_wd_probe(struct net_device *dev)
{ int i; struct resource *r; int base_addr = dev->base_addr; int irq = dev->irq; int mem_start = dev->mem_start; int mem_end = dev->mem_end;
if (base_addr > 0x1ff) { /* Check a user specified location. */
r = request_region(base_addr, WD_IO_EXTENT, "wd-probe"); if ( r == NULL) return -EBUSY;
i = wd_probe1(dev, base_addr); if (i != 0)
release_region(base_addr, WD_IO_EXTENT); else
r->name = dev->name; return i;
} elseif (base_addr != 0) /* Don't probe at all. */ return -ENXIO;
for (i = 0; wd_portlist[i]; i++) { int ioaddr = wd_portlist[i];
r = request_region(ioaddr, WD_IO_EXTENT, "wd-probe"); if (r == NULL) continue; if (wd_probe1(dev, ioaddr) == 0) {
r->name = dev->name; return 0;
}
release_region(ioaddr, WD_IO_EXTENT);
dev->irq = irq;
dev->mem_start = mem_start;
dev->mem_end = mem_end;
}
staticint __init wd_probe1(struct net_device *dev, int ioaddr)
{ int i; int err; int checksum = 0; int ancient = 0; /* An old card without config registers. */ int word16 = 0; /* 0 = 8 bit, 1 = 16 bit */
u8 addr[ETH_ALEN]; constchar *model_name; staticunsigned version_printed; struct ei_device *ei_local = netdev_priv(dev);
for (i = 0; i < 8; i++)
checksum += inb(ioaddr + 8 + i); if (inb(ioaddr + 8) == 0xff /* Extra check to avoid soundcard. */
|| inb(ioaddr + 9) == 0xff
|| (checksum & 0xff) != 0xFF) return -ENODEV;
/* Check for semi-valid mem_start/end values if supplied. */ if ((dev->mem_start % 0x2000) || (dev->mem_end % 0x2000)) {
netdev_warn(dev, "wd.c: user supplied mem_start or mem_end not on 8kB boundary - ignored.\n");
dev->mem_start = 0;
dev->mem_end = 0;
}
if ((wd_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
netdev_info(dev, version);
for (i = 0; i < 6; i++)
addr[i] = inb(ioaddr + 8 + i);
eth_hw_addr_set(dev, addr);
netdev_info(dev, "WD80x3 at %#3x, %pM", ioaddr, dev->dev_addr);
/* The following PureData probe code was contributed by Mike Jagdis <jaggy@purplet.demon.co.uk>. Puredata does software configuration differently from others so we have to check for them. This detects an 8 bit, 16 bit or dumb (Toshiba, jumpered) card.
*/ if (inb(ioaddr+0) == 'P' && inb(ioaddr+1) == 'D') { unsignedchar reg5 = inb(ioaddr+5);
switch (inb(ioaddr+2)) { case 0x03: word16 = 0; model_name = "PDI8023-8"; break; case 0x05: word16 = 0; model_name = "PDUC8023"; break; case 0x0a: word16 = 1; model_name = "PDI8023-16"; break; /* Either 0x01 (dumb) or they've released a new version. */ default: word16 = 0; model_name = "PDI8023"; break;
}
dev->mem_start = ((reg5 & 0x1c) + 0xc0) << 12;
dev->irq = (reg5 & 0xe0) == 0xe0 ? 10 : (reg5 >> 5) + 1;
} else { /* End of PureData probe */ /* This method of checking for a 16-bit board is borrowed from the we.c driver. A simpler method is just to look in ASIC reg. 0x03. I'm comparing the two method in alpha test to make certain they
return the same result. */ /* Check for the old 8 bit board - it has register 0/8 aliasing.
Do NOT check i>=6 here -- it hangs the old 8003 boards! */ for (i = 0; i < 6; i++) if (inb(ioaddr+i) != inb(ioaddr+8+i)) break; if (i >= 6) {
ancient = 1;
model_name = "WD8003-old";
word16 = 0;
} else { int tmp = inb(ioaddr+1); /* fiddle with 16bit bit */
outb( tmp ^ 0x01, ioaddr+1 ); /* attempt to clear 16bit bit */ if (((inb( ioaddr+1) & 0x01) == 0x01) /* A 16 bit card */
&& (tmp & 0x01) == 0x01 ) { /* In a 16 slot. */ int asic_reg5 = inb(ioaddr+WD_CMDREG5); /* Magic to set ASIC to word-wide mode. */
outb( NIC16 | (asic_reg5&0x1f), ioaddr+WD_CMDREG5);
outb(tmp, ioaddr+1);
model_name = "WD8013";
word16 = 1; /* We have a 16bit board here! */
} else {
model_name = "WD8003";
word16 = 0;
}
outb(tmp, ioaddr+1); /* Restore original reg1 value. */
} #ifndef final_version if ( !ancient && (inb(ioaddr+1) & 0x01) != (word16 & 0x01))
pr_cont("\nWD80?3: Bus width conflict, %d (probe) != %d (reg report).",
word16 ? 16 : 8,
(inb(ioaddr+1) & 0x01) ? 16 : 8); #endif
}
#ifdefined(WD_SHMEM) && WD_SHMEM > 0x80000 /* Allow a compile-time override. */
dev->mem_start = WD_SHMEM; #else if (dev->mem_start == 0) { /* Sanity and old 8003 check */ int reg0 = inb(ioaddr); if (reg0 == 0xff || reg0 == 0) { /* Future plan: this could check a few likely locations first. */
dev->mem_start = 0xd0000;
pr_cont(" assigning address %#lx", dev->mem_start);
} else { int high_addr_bits = inb(ioaddr+WD_CMDREG5) & 0x1f; /* Some boards don't have the register 5 -- it returns 0xff. */ if (high_addr_bits == 0x1f || word16 == 0)
high_addr_bits = 0x01;
dev->mem_start = ((reg0&0x3f) << 13) + (high_addr_bits << 19);
}
} #endif
/* The 8390 isn't at the base address -- the ASIC regs are there! */
dev->base_addr = ioaddr+WD_NIC_OFFSET;
if (dev->irq < 2) { staticconstint irqmap[] = {9, 3, 5, 7, 10, 11, 15, 4}; int reg1 = inb(ioaddr+1); int reg4 = inb(ioaddr+4); if (ancient || reg1 == 0xff) { /* Ack!! No way to read the IRQ! */ short nic_addr = ioaddr+WD_NIC_OFFSET; unsignedlong irq_mask;
/* We have an old-style ethercard that doesn't report its IRQ line. Do autoirq to find the IRQ line. Note that this IS NOT
a reliable way to trigger an interrupt. */
outb_p(E8390_NODMA + E8390_STOP, nic_addr);
outb(0x00, nic_addr+EN0_IMR); /* Disable all intrs. */
/* Snarf the interrupt now. There's no point in waiting since we cannot
share and the board will usually be enabled. */
i = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev); if (i) {
pr_cont(" unable to get IRQ %d.\n", dev->irq); return i;
}
/* OK, were are certain this is going to work. Setup the device. */
ei_status.name = model_name;
ei_status.word16 = word16;
ei_status.tx_start_page = WD_START_PG;
ei_status.rx_start_page = WD_START_PG + TX_PAGES;
/* Don't map in the shared memory until the board is actually opened. */
/* Some cards (eg WD8003EBT) can be jumpered for more (32k!) memory. */ if (dev->mem_end != 0) {
ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
ei_status.priv = dev->mem_end - dev->mem_start;
} else {
ei_status.stop_page = word16 ? WD13_STOP_PG : WD03_STOP_PG;
dev->mem_end = dev->mem_start + (ei_status.stop_page - WD_START_PG)*256;
ei_status.priv = (ei_status.stop_page - WD_START_PG)*256;
}
/* Map in the shared memory. Always set register 0 last to remain
compatible with very old boards. */
ei_status.reg0 = ((dev->mem_start>>13) & 0x3f) | WD_MEMENB;
ei_status.reg5 = ((dev->mem_start>>19) & 0x1f) | NIC16;
if (ei_status.word16)
outb(ei_status.reg5, ioaddr+WD_CMDREG5);
outb(ei_status.reg0, ioaddr); /* WD_CMDREG */
/* Set up the ASIC registers, just in case something changed them. */
outb((((dev->mem_start>>13) & 0x3f)|WD_MEMENB), wd_cmd_port); if (ei_status.word16)
outb(NIC16 | ((dev->mem_start>>19) & 0x1f), wd_cmd_port+WD_CMDREG5);
netif_dbg(ei_local, hw, dev, "reset done\n");
}
/* 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. */
staticvoid
wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
/* We'll always get a 4 byte header read followed by a packet read, so
we enable 16 bit mode before the header, and disable after the body. */ if (ei_status.word16)
outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
#ifdef __BIG_ENDIAN /* Officially this is what we are doing, but the readl() is faster */ /* unfortunately it isn't endian aware of the struct */
memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
hdr->count = le16_to_cpu(hdr->count); #else
((unsignedint*)hdr)[0] = readl(hdr_start); #endif
}
/* Block input and output are easy on shared memory ethercards, and trivial on the Western digital card where there is no choice of how to do it. The only complications are that the ring buffer wraps, and need to map
switch between 8- and 16-bit modes. */
if (offset + count > ei_status.priv) { /* We must wrap the input move. */ int semi_count = ei_status.priv - offset;
memcpy_fromio(skb->data, xfer_start, semi_count);
count -= semi_count;
memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
} else { /* Packet is in one chunk -- we can copy + cksum. */
memcpy_fromio(skb->data, xfer_start, count);
}
/* Turn off 16 bit access so that reboot works. ISA brain-damage */ if (ei_status.word16)
outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
}
staticvoid
wd_block_output(struct net_device *dev, int count, constunsignedchar *buf, int start_page)
{ int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */ void __iomem *shmem = ei_status.mem + ((start_page - WD_START_PG)<<8);
if (ei_status.word16) { /* Turn on and off 16 bit access so that reboot works. */
outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
memcpy_toio(shmem, buf, count);
outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
} else
memcpy_toio(shmem, buf, count);
}
netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
ei_close(dev);
/* Change from 16-bit to 8-bit shared memory so reboot works. */ if (ei_status.word16)
outb(ei_status.reg5, wd_cmdreg + WD_CMDREG5 );
/* And disable the shared memory. */
outb(ei_status.reg0 & ~WD_MEMENB, wd_cmdreg);
return 0;
}
#ifdef MODULE #define MAX_WD_CARDS 4 /* Max number of wd cards per module */ staticstruct net_device *dev_wd[MAX_WD_CARDS]; staticint io[MAX_WD_CARDS]; staticint irq[MAX_WD_CARDS]; staticint mem[MAX_WD_CARDS]; staticint mem_end[MAX_WD_CARDS]; /* for non std. mem size */
module_param_hw_array(io, int, ioport, NULL, 0);
module_param_hw_array(irq, int, irq, NULL, 0);
module_param_hw_array(mem, int, iomem, NULL, 0);
module_param_hw_array(mem_end, int, iomem, NULL, 0);
module_param_named(msg_enable, wd_msg_enable, uint, 0444);
MODULE_PARM_DESC(io, "I/O base address(es)");
MODULE_PARM_DESC(irq, "IRQ number(s) (ignored for PureData boards)");
MODULE_PARM_DESC(mem, "memory base address(es)(ignored for PureData boards)");
MODULE_PARM_DESC(mem_end, "memory end address(es)");
MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
MODULE_DESCRIPTION("ISA Western Digital wd8003/wd8013 ; SMC Elite, Elite16 ethernet driver");
MODULE_LICENSE("GPL");
/* This is set up so that only a single autoprobe takes place per call.
ISA device autoprobes on a running machine are not recommended. */
staticint __init wd_init_module(void)
{ struct net_device *dev; int this_dev, found = 0;
for (this_dev = 0; this_dev < MAX_WD_CARDS; this_dev++) { if (io[this_dev] == 0) { if (this_dev != 0) break; /* only autoprobe 1st one */
printk(KERN_NOTICE "wd.c: Presently autoprobing (not recommended) for a single card.\n");
}
dev = alloc_ei_netdev(); if (!dev) break;
dev->irq = irq[this_dev];
dev->base_addr = io[this_dev];
dev->mem_start = mem[this_dev];
dev->mem_end = mem_end[this_dev]; if (do_wd_probe(dev) == 0) {
dev_wd[found++] = dev; continue;
}
free_netdev(dev);
printk(KERN_WARNING "wd.c: No wd80x3 card found (i/o = 0x%x).\n", io[this_dev]); break;
} if (found) return 0; return -ENXIO;
}
module_init(wd_init_module);
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