diff options
Diffstat (limited to 'drivers/net/ne2.c')
| -rw-r--r-- | drivers/net/ne2.c | 829 |
1 files changed, 829 insertions, 0 deletions
diff --git a/drivers/net/ne2.c b/drivers/net/ne2.c new file mode 100644 index 00000000000..6ebef27dbfa --- /dev/null +++ b/drivers/net/ne2.c @@ -0,0 +1,829 @@ +/* ne2.c: A NE/2 Ethernet Driver for Linux. */ +/* + Based on the NE2000 driver written by Donald Becker (1992-94). + modified by Wim Dumon (Apr 1996) + + This software may be used and distributed according to the terms + of the GNU General Public License, incorporated herein by reference. + + The author may be reached as wimpie@linux.cc.kuleuven.ac.be + + Currently supported: NE/2 + This patch was never tested on other MCA-ethernet adapters, but it + might work. Just give it a try and let me know if you have problems. + Also mail me if it really works, please! + + Changelog: + Mon Feb 3 16:26:02 MET 1997 + - adapted the driver to work with the 2.1.25 kernel + - multiple ne2 support (untested) + - module support (untested) + + Fri Aug 28 00:18:36 CET 1998 (David Weinehall) + - fixed a few minor typos + - made the MODULE_PARM conditional (it only works with the v2.1.x kernels) + - fixed the module support (Now it's working...) + + Mon Sep 7 19:01:44 CET 1998 (David Weinehall) + - added support for Arco Electronics AE/2-card (experimental) + + Mon Sep 14 09:53:42 CET 1998 (David Weinehall) + - added support for Compex ENET-16MC/P (experimental) + + Tue Sep 15 16:21:12 CET 1998 (David Weinehall, Magnus Jonsson, Tomas Ogren) + - Miscellaneous bugfixes + + Tue Sep 19 16:21:12 CET 1998 (Magnus Jonsson) + - Cleanup + + Wed Sep 23 14:33:34 CET 1998 (David Weinehall) + - Restructuring and rewriting for v2.1.x compliance + + Wed Oct 14 17:19:21 CET 1998 (David Weinehall) + - Added code that unregisters irq and proc-info + - Version# bump + + Mon Nov 16 15:28:23 CET 1998 (Wim Dumon) + - pass 'dev' as last parameter of request_irq in stead of 'NULL' + + Wed Feb 7 21:24:00 CET 2001 (Alfred Arnold) + - added support for the D-Link DE-320CT + + * WARNING + ------- + This is alpha-test software. It is not guaranteed to work. As a + matter of fact, I'm quite sure there are *LOTS* of bugs in here. I + would like to hear from you if you use this driver, even if it works. + If it doesn't work, be sure to send me a mail with the problems ! +*/ + +static const char *version = "ne2.c:v0.91 Nov 16 1998 Wim Dumon <wimpie@kotnet.org>\n"; + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/fcntl.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/in.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/mca-legacy.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/bitops.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/dma.h> + +#include "8390.h" + +#define DRV_NAME "ne2" + +/* Some defines that people can play with if so inclined. */ + +/* Do we perform extra sanity checks on stuff ? */ +/* #define NE_SANITY_CHECK */ + +/* Do we implement the read before write bugfix ? */ +/* #define NE_RW_BUGFIX */ + +/* Do we have a non std. amount of memory? (in units of 256 byte pages) */ +/* #define PACKETBUF_MEMSIZE 0x40 */ + + +/* ---- No user-serviceable parts below ---- */ + +#define NE_BASE (dev->base_addr) +#define NE_CMD 0x00 +#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ +#define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */ +#define NE_IO_EXTENT 0x30 + +#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 */ +#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ + +/* From the .ADF file: */ +static unsigned int addresses[7] __initdata = + {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0}; +static int irqs[4] __initdata = {3, 4, 5, 9}; + +/* From the D-Link ADF file: */ +static unsigned int dlink_addresses[4] __initdata = + {0x300, 0x320, 0x340, 0x360}; +static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15}; + +struct ne2_adapters_t { + unsigned int id; + char *name; +}; + +static struct ne2_adapters_t ne2_adapters[] __initdata = { + { 0x6354, "Arco Ethernet Adapter AE/2" }, + { 0x70DE, "Compex ENET-16 MC/P" }, + { 0x7154, "Novell Ethernet Adapter NE/2" }, + { 0x56ea, "D-Link DE-320CT" }, + { 0x0000, NULL } +}; + +extern int netcard_probe(struct net_device *dev); + +static int ne2_probe1(struct net_device *dev, int slot); + +static int ne_open(struct net_device *dev); +static int ne_close(struct net_device *dev); + +static void ne_reset_8390(struct net_device *dev); +static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, + int ring_page); +static void ne_block_input(struct net_device *dev, int count, + struct sk_buff *skb, int ring_offset); +static void ne_block_output(struct net_device *dev, const int count, + const unsigned char *buf, const int start_page); + + +/* + * special code to read the DE-320's MAC address EEPROM. In contrast to a + * standard NE design, this is a serial EEPROM (93C46) that has to be read + * bit by bit. The EEPROM cotrol port at base + 0x1e has the following + * layout: + * + * Bit 0 = Data out (read from EEPROM) + * Bit 1 = Data in (write to EEPROM) + * Bit 2 = Clock + * Bit 3 = Chip Select + * Bit 7 = ~50 kHz clock for defined delays + * + */ + +static void __init dlink_put_eeprom(unsigned char value, unsigned int addr) +{ + int z; + unsigned char v1, v2; + + /* write the value to the NIC EEPROM register */ + + outb(value, addr + 0x1e); + + /* now wait the clock line to toggle twice. Effectively, we are + waiting (at least) for one clock cycle */ + + for (z = 0; z < 2; z++) { + do { + v1 = inb(addr + 0x1e); + v2 = inb(addr + 0x1e); + } + while (!((v1 ^ v2) & 0x80)); + } +} + +static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr) +{ + /* shift data bit into correct position */ + + bit = bit << 1; + + /* write value, keep clock line high for two cycles */ + + dlink_put_eeprom(0x09 | bit, addr); + dlink_put_eeprom(0x0d | bit, addr); + dlink_put_eeprom(0x0d | bit, addr); + dlink_put_eeprom(0x09 | bit, addr); +} + +static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr) +{ + int z; + + /* adjust bits so that they are left-aligned in a 16-bit-word */ + + value = value << (16 - len); + + /* shift bits out to the EEPROM */ + + for (z = 0; z < len; z++) { + dlink_send_eeprom_bit((value & 0x8000) >> 15, addr); + value = value << 1; + } +} + +static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr) +{ + int z; + unsigned int value = 0; + + /* pull the CS line low for a moment. This resets the EEPROM- + internal logic, and makes it ready for a new command. */ + + dlink_put_eeprom(0x01, addr); + dlink_put_eeprom(0x09, addr); + + /* send one start bit, read command (1 - 0), plus the address to + the EEPROM */ + + dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr); + + /* get the data word. We clock by sending 0s to the EEPROM, which + get ignored during the read process */ + + for (z = 0; z < 16; z++) { + dlink_send_eeprom_bit(0, addr); + value = (value << 1) | (inb(addr + 0x1e) & 0x01); + } + + return value; +} + +/* + * Note that at boot, this probe only picks up one card at a time. + */ + +static int __init do_ne2_probe(struct net_device *dev) +{ + static int current_mca_slot = -1; + int i; + int adapter_found = 0; + + SET_MODULE_OWNER(dev); + + /* Do not check any supplied i/o locations. + POS registers usually don't fail :) */ + + /* MCA cards have POS registers. + Autodetecting MCA cards is extremely simple. + Just search for the card. */ + + for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) { + current_mca_slot = + mca_find_unused_adapter(ne2_adapters[i].id, 0); + + if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) { + int res; + mca_set_adapter_name(current_mca_slot, + ne2_adapters[i].name); + mca_mark_as_used(current_mca_slot); + + res = ne2_probe1(dev, current_mca_slot); + if (res) + mca_mark_as_unused(current_mca_slot); + return res; + } + } + return -ENODEV; +} + +static void cleanup_card(struct net_device *dev) +{ + mca_mark_as_unused(ei_status.priv); + mca_set_adapter_procfn( ei_status.priv, NULL, NULL); + free_irq(dev->irq, dev); + release_region(dev->base_addr, NE_IO_EXTENT); +} + +#ifndef MODULE +struct net_device * __init ne2_probe(int unit) +{ + struct net_device *dev = alloc_ei_netdev(); + int err; + + if (!dev) + return ERR_PTR(-ENOMEM); + + sprintf(dev->name, "eth%d", unit); + netdev_boot_setup_check(dev); + + err = do_ne2_probe(dev); + if (err) + goto out; + err = register_netdev(dev); + if (err) + goto out1; + return dev; +out1: + cleanup_card(dev); +out: + free_netdev(dev); + return ERR_PTR(err); +} +#endif + +static int ne2_procinfo(char *buf, int slot, struct net_device *dev) +{ + int len=0; + + len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" ); + len += sprintf(buf+len, "Driver written by Wim Dumon "); + len += sprintf(buf+len, "<wimpie@kotnet.org>\n"); + len += sprintf(buf+len, "Modified by "); + len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n"); + len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n"); + len += sprintf(buf+len, "Based on the original NE2000 drivers\n" ); + len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr); + len += sprintf(buf+len, "IRQ : %d\n", dev->irq); + +#define HW_ADDR(i) dev->dev_addr[i] + len += sprintf(buf+len, "HW addr : %x:%x:%x:%x:%x:%x\n", + HW_ADDR(0), HW_ADDR(1), HW_ADDR(2), + HW_ADDR(3), HW_ADDR(4), HW_ADDR(5) ); +#undef HW_ADDR + + return len; +} + +static int __init ne2_probe1(struct net_device *dev, int slot) +{ + int i, base_addr, irq, retval; + unsigned char POS; + unsigned char SA_prom[32]; + const char *name = "NE/2"; + int start_page, stop_page; + static unsigned version_printed; + + if (ei_debug && version_printed++ == 0) + printk(version); + + printk("NE/2 ethercard found in slot %d:", slot); + + /* Read base IO and IRQ from the POS-registers */ + POS = mca_read_stored_pos(slot, 2); + if(!(POS % 2)) { + printk(" disabled.\n"); + return -ENODEV; + } + + /* handle different POS register structure for D-Link card */ + + if (mca_read_stored_pos(slot, 0) == 0xea) { + base_addr = dlink_addresses[(POS >> 5) & 0x03]; + irq = dlink_irqs[(POS >> 2) & 0x07]; + } + else { + i = (POS & 0xE)>>1; + /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0" + " en zou het moeten werken -> %d\n", i); + The above line was for remote testing, thanx to sdog ... */ + base_addr = addresses[i - 1]; + irq = irqs[(POS & 0x60)>>5]; + } + + if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME)) + return -EBUSY; + +#ifdef DEBUG + printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS, + base_addr, irq); +#endif + +#ifndef CRYNWR_WAY + /* Reset the card the way they do it in the Crynwr packet driver */ + for (i=0; i<8; i++) + outb(0x0, base_addr + NE_RESET); + inb(base_addr + NE_RESET); + outb(0x21, base_addr + NE_CMD); + if (inb(base_addr + NE_CMD) != 0x21) { + printk("NE/2 adapter not responding\n"); + retval = -ENODEV; + goto out; + } + + /* In the crynwr sources they do a RAM-test here. I skip it. I suppose + my RAM is okay. Suppose your memory is broken. Then this test + should fail and you won't be able to use your card. But if I do not + test, you won't be able to use your card, neither. So this test + won't help you. */ + +#else /* _I_ never tested it this way .. Go ahead and try ...*/ + /* Reset card. Who knows what dain-bramaged state it was left in. */ + { + unsigned long reset_start_time = jiffies; + + /* DON'T change these to inb_p/outb_p or reset will fail on + clones.. */ + outb(inb(base_addr + NE_RESET), base_addr + NE_RESET); + + while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0) + if (jiffies - reset_start_time > 2*HZ/100) { + printk(" not found (no reset ack).\n"); + retval = -ENODEV; + goto out; + } + + outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */ + } +#endif + + + /* 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 char value, offset; + } program_seq[] = { + /* Select page 0 */ + {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, + {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */ + {0x00, EN0_RCNTLO}, /* Clear the count regs. */ + {0x00, EN0_RCNTHI}, + {0x00, EN0_IMR}, /* Mask completion irq. */ + {0xFF, EN0_ISR}, + {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ + {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ + {32, EN0_RCNTLO}, + {0x00, EN0_RCNTHI}, + {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ + {0x00, EN0_RSARHI}, + {E8390_RREAD+E8390_START, E8390_CMD}, + }; + + for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) + outb_p(program_seq[i].value, base_addr + + program_seq[i].offset); + + } + for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) { + SA_prom[i] = inb(base_addr + NE_DATAPORT); + } + + /* I don't know whether the previous sequence includes the general + board reset procedure, so better don't omit it and just overwrite + the garbage read from a DE-320 with correct stuff. */ + + if (mca_read_stored_pos(slot, 0) == 0xea) { + unsigned int v; + + for (i = 0; i < 3; i++) { + v = dlink_get_eeprom(i, base_addr); + SA_prom[(i << 1) ] = v & 0xff; + SA_prom[(i << 1) + 1] = (v >> 8) & 0xff; + } + } + + start_page = NESM_START_PG; + stop_page = NESM_STOP_PG; + + dev->irq=irq; + + /* Snarf the interrupt now. There's no point in waiting since we cannot + share and the board will usually be enabled. */ + retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev); + if (retval) { + printk (" unable to get IRQ %d (irqval=%d).\n", + dev->irq, retval); + goto out; + } + + dev->base_addr = base_addr; + + for(i = 0; i < ETHER_ADDR_LEN; i++) { + printk(" %2.2x", SA_prom[i]); + dev->dev_addr[i] = SA_prom[i]; + } + + printk("\n%s: %s found at %#x, using IRQ %d.\n", + dev->name, name, base_addr, dev->irq); + + mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev); + + ei_status.name = name; + ei_status.tx_start_page = start_page; + ei_status.stop_page = stop_page; + ei_status.word16 = (2 == 2); + + ei_status.rx_start_page = start_page + TX_PAGES; +#ifdef PACKETBUF_MEMSIZE + /* Allow the packet buffer size to be overridden by know-it-alls. */ + ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; +#endif + + ei_status.reset_8390 = &ne_reset_8390; + ei_status.block_input = &ne_block_input; + ei_status.block_output = &ne_block_output; + ei_status.get_8390_hdr = &ne_get_8390_hdr; + + ei_status.priv = slot; + + dev->open = &ne_open; + dev->stop = &ne_close; +#ifdef CONFIG_NET_POLL_CONTROLLER + dev->poll_controller = ei_poll; +#endif + NS8390_init(dev, 0); + return 0; +out: + release_region(base_addr, NE_IO_EXTENT); + return retval; +} + +static int ne_open(struct net_device *dev) +{ + ei_open(dev); + return 0; +} + +static int ne_close(struct net_device *dev) +{ + if (ei_debug > 1) + printk("%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 ne_reset_8390(struct net_device *dev) +{ + unsigned long reset_start_time = jiffies; + + if (ei_debug > 1) + printk("resetting the 8390 t=%ld...", jiffies); + + /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ + 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_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) + if (jiffies - reset_start_time > 2*HZ/100) { + printk("%s: ne_reset_8390() did not complete.\n", + dev->name); + break; + } + outb_p(ENISR_RESET, NE_BASE + 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 ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, + int ring_page) +{ + + int nic_base = dev->base_addr; + + /* This *shouldn't* happen. + If it does, it's the last thing you'll see */ + if (ei_status.dmaing) { + printk("%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; + outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); + outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); + outb_p(0, nic_base + EN0_RCNTHI); + outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ + outb_p(ring_page, nic_base + EN0_RSARHI); + outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); + + if (ei_status.word16) + insw(NE_BASE + NE_DATAPORT, hdr, + sizeof(struct e8390_pkt_hdr)>>1); + else + insb(NE_BASE + NE_DATAPORT, hdr, + sizeof(struct e8390_pkt_hdr)); + + outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ + 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 outb. */ + +static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, + int ring_offset) +{ +#ifdef NE_SANITY_CHECK + int xfer_count = count; +#endif + int nic_base = dev->base_addr; + char *buf = skb->data; + + /* This *shouldn't* happen. + If it does, it's the last thing you'll see */ + if (ei_status.dmaing) { + printk("%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; + outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); + outb_p(count & 0xff, nic_base + EN0_RCNTLO); + outb_p(count >> 8, nic_base + EN0_RCNTHI); + outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); + outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); + outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); + if (ei_status.word16) { + insw(NE_BASE + NE_DATAPORT,buf,count>>1); + if (count & 0x01) { + buf[count-1] = inb(NE_BASE + NE_DATAPORT); +#ifdef NE_SANITY_CHECK + xfer_count++; +#endif + } + } else { + insb(NE_BASE + NE_DATAPORT, buf, count); + } + +#ifdef NE_SANITY_CHECK + /* This was for the ALPHA version only, but enough people have + been encountering problems so it is still here. If you see + this message you either 1) have a slightly incompatible clone + or 2) have noise/speed problems with your bus. */ + if (ei_debug > 1) { /* DMA termination address check... */ + int addr, tries = 20; + do { + /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here + -- it's broken for Rx on some cards! */ + int high = inb_p(nic_base + EN0_RSARHI); + int low = inb_p(nic_base + EN0_RSARLO); + addr = (high << 8) + low; + if (((ring_offset + xfer_count) & 0xff) == low) + break; + } while (--tries > 0); + if (tries <= 0) + printk("%s: RX transfer address mismatch," + "%#4.4x (expected) vs. %#4.4x (actual).\n", + dev->name, ring_offset + xfer_count, addr); + } +#endif + outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ + ei_status.dmaing &= ~0x01; +} + +static void ne_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; +#ifdef NE_SANITY_CHECK + int retries = 0; +#endif + + /* 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) { + printk("%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... */ + outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); + +#ifdef NE_SANITY_CHECK +retry: +#endif + +#ifdef NE8390_RW_BUGFIX + /* Handle the read-before-write bug the same way as the + Crynwr packet driver -- the NatSemi method doesn't work. + Actually this doesn't always work either, but if you have + problems with your NEx000 this is better than nothing! */ + outb_p(0x42, nic_base + EN0_RCNTLO); + outb_p(0x00, nic_base + EN0_RCNTHI); + outb_p(0x42, nic_base + EN0_RSARLO); + outb_p(0x00, nic_base + EN0_RSARHI); + outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); + /* Make certain that the dummy read has occurred. */ + SLOW_DOWN_IO; + SLOW_DOWN_IO; + SLOW_DOWN_IO; +#endif + + outb_p(ENISR_RDC, nic_base + EN0_ISR); + + /* Now the normal output. */ + outb_p(count & 0xff, nic_base + EN0_RCNTLO); + outb_p(count >> 8, nic_base + EN0_RCNTHI); + outb_p(0x00, nic_base + EN0_RSARLO); + outb_p(start_page, nic_base + EN0_RSARHI); + + outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); + if (ei_status.word16) { + outsw(NE_BASE + NE_DATAPORT, buf, count>>1); + } else { + outsb(NE_BASE + NE_DATAPORT, buf, count); + } + + dma_start = jiffies; + +#ifdef NE_SANITY_CHECK + /* This was for the ALPHA version only, but enough people have + been encountering problems so it is still here. */ + + if (ei_debug > 1) { /* DMA termination address check... */ + int addr, tries = 20; + do { + int high = inb_p(nic_base + EN0_RSARHI); + int low = inb_p(nic_base + EN0_RSARLO); + addr = (high << 8) + low; + if ((start_page << 8) + count == addr) + break; + } while (--tries > 0); + if (tries <= 0) { + printk("%s: Tx packet transfer address mismatch," + "%#4.4x (expected) vs. %#4.4x (actual).\n", + dev->name, (start_page << 8) + count, addr); + if (retries++ == 0) + goto retry; + } + } +#endif + + while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) + if (jiffies - dma_start > 2*HZ/100) { /* 20ms */ + printk("%s: timeout waiting for Tx RDC.\n", dev->name); + ne_reset_8390(dev); + NS8390_init(dev,1); + break; + } + + outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ + ei_status.dmaing &= ~0x01; + return; +} + + +#ifdef MODULE +#define MAX_NE_CARDS 4 /* Max number of NE cards per module */ +static struct net_device *dev_ne[MAX_NE_CARDS]; +static int io[MAX_NE_CARDS]; +static int irq[MAX_NE_CARDS]; +static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */ +MODULE_LICENSE("GPL"); + +module_param_array(io, int, NULL, 0); +module_param_array(irq, int, NULL, 0); +module_param_array(bad, int, NULL, 0); +MODULE_PARM_DESC(io, "(ignored)"); +MODULE_PARM_DESC(irq, "(ignored)"); +MODULE_PARM_DESC(bad, "(ignored)"); + +/* Module code fixed by David Weinehall */ + +int init_module(void) +{ + struct net_device *dev; + int this_dev, found = 0; + + for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { + dev = alloc_ei_netdev(); + if (!dev) + break; + dev->irq = irq[this_dev]; + dev->mem_end = bad[this_dev]; + dev->base_addr = io[this_dev]; + if (do_ne2_probe(dev) == 0) { + if (register_netdev(dev) == 0) { + dev_ne[found++] = dev; + continue; + } + cleanup_card(dev); + } + free_netdev(dev); + break; + } + if (found) + return 0; + printk(KERN_WARNING "ne2.c: No NE/2 card found\n"); + return -ENXIO; +} + +void cleanup_module(void) +{ + int this_dev; + + for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { + struct net_device *dev = dev_ne[this_dev]; + if (dev) { + unregister_netdev(dev); + cleanup_card(dev); + free_netdev(dev); + } + } +} +#endif /* MODULE */ |