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-rw-r--r--drivers/net/ne2.c829
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diff --git a/drivers/net/ne2.c b/drivers/net/ne2.c
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+++ b/drivers/net/ne2.c
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+/* 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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 21:08:20 +0100