1 /* ne2.c: A NE/2 Ethernet Driver for Linux. */
3 Based on the NE2000 driver written by Donald Becker (1992-94).
4 modified by Wim Dumon (Apr 1996)
6 This software may be used and distributed according to the terms
7 of the GNU General Public License, incorporated herein by reference.
9 The author may be reached as wimpie@linux.cc.kuleuven.ac.be
11 Currently supported: NE/2
12 This patch was never tested on other MCA-ethernet adapters, but it
13 might work. Just give it a try and let me know if you have problems.
14 Also mail me if it really works, please!
17 Mon Feb 3 16:26:02 MET 1997
18 - adapted the driver to work with the 2.1.25 kernel
19 - multiple ne2 support (untested)
20 - module support (untested)
22 Fri Aug 28 00:18:36 CET 1998 (David Weinehall)
23 - fixed a few minor typos
24 - made the MODULE_PARM conditional (it only works with the v2.1.x kernels)
25 - fixed the module support (Now it's working...)
27 Mon Sep 7 19:01:44 CET 1998 (David Weinehall)
28 - added support for Arco Electronics AE/2-card (experimental)
30 Mon Sep 14 09:53:42 CET 1998 (David Weinehall)
31 - added support for Compex ENET-16MC/P (experimental)
33 Tue Sep 15 16:21:12 CET 1998 (David Weinehall, Magnus Jonsson, Tomas Ogren)
34 - Miscellaneous bugfixes
36 Tue Sep 19 16:21:12 CET 1998 (Magnus Jonsson)
39 Wed Sep 23 14:33:34 CET 1998 (David Weinehall)
40 - Restructuring and rewriting for v2.1.x compliance
42 Wed Oct 14 17:19:21 CET 1998 (David Weinehall)
43 - Added code that unregisters irq and proc-info
46 Mon Nov 16 15:28:23 CET 1998 (Wim Dumon)
47 - pass 'dev' as last parameter of request_irq in stead of 'NULL'
49 Wed Feb 7 21:24:00 CET 2001 (Alfred Arnold)
50 - added support for the D-Link DE-320CT
54 This is alpha-test software. It is not guaranteed to work. As a
55 matter of fact, I'm quite sure there are *LOTS* of bugs in here. I
56 would like to hear from you if you use this driver, even if it works.
57 If it doesn't work, be sure to send me a mail with the problems !
60 static const char *version = "ne2.c:v0.91 Nov 16 1998 Wim Dumon <wimpie@kotnet.org>\n";
62 #include <linux/module.h>
63 #include <linux/kernel.h>
64 #include <linux/types.h>
65 #include <linux/fcntl.h>
66 #include <linux/interrupt.h>
67 #include <linux/ioport.h>
69 #include <linux/slab.h>
70 #include <linux/string.h>
71 #include <linux/errno.h>
72 #include <linux/init.h>
73 #include <linux/mca-legacy.h>
74 #include <linux/netdevice.h>
75 #include <linux/etherdevice.h>
76 #include <linux/skbuff.h>
77 #include <linux/bitops.h>
79 #include <asm/system.h>
85 #define DRV_NAME "ne2"
87 /* Some defines that people can play with if so inclined. */
89 /* Do we perform extra sanity checks on stuff ? */
90 /* #define NE_SANITY_CHECK */
92 /* Do we implement the read before write bugfix ? */
93 /* #define NE_RW_BUGFIX */
95 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
96 /* #define PACKETBUF_MEMSIZE 0x40 */
99 /* ---- No user-serviceable parts below ---- */
101 #define NE_BASE (dev->base_addr)
103 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
104 #define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */
105 #define NE_IO_EXTENT 0x30
107 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
108 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
109 #define NESM_START_PG 0x40 /* First page of TX buffer */
110 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
112 /* From the .ADF file: */
113 static unsigned int addresses[7] __initdata =
114 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0};
115 static int irqs[4] __initdata = {3, 4, 5, 9};
117 /* From the D-Link ADF file: */
118 static unsigned int dlink_addresses[4] __initdata =
119 {0x300, 0x320, 0x340, 0x360};
120 static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15};
122 struct ne2_adapters_t {
127 static struct ne2_adapters_t ne2_adapters[] __initdata = {
128 { 0x6354, "Arco Ethernet Adapter AE/2" },
129 { 0x70DE, "Compex ENET-16 MC/P" },
130 { 0x7154, "Novell Ethernet Adapter NE/2" },
131 { 0x56ea, "D-Link DE-320CT" },
135 extern int netcard_probe(struct net_device *dev);
137 static int ne2_probe1(struct net_device *dev, int slot);
139 static int ne_open(struct net_device *dev);
140 static int ne_close(struct net_device *dev);
142 static void ne_reset_8390(struct net_device *dev);
143 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
145 static void ne_block_input(struct net_device *dev, int count,
146 struct sk_buff *skb, int ring_offset);
147 static void ne_block_output(struct net_device *dev, const int count,
148 const unsigned char *buf, const int start_page);
152 * special code to read the DE-320's MAC address EEPROM. In contrast to a
153 * standard NE design, this is a serial EEPROM (93C46) that has to be read
154 * bit by bit. The EEPROM cotrol port at base + 0x1e has the following
157 * Bit 0 = Data out (read from EEPROM)
158 * Bit 1 = Data in (write to EEPROM)
160 * Bit 3 = Chip Select
161 * Bit 7 = ~50 kHz clock for defined delays
165 static void __init dlink_put_eeprom(unsigned char value, unsigned int addr)
168 unsigned char v1, v2;
170 /* write the value to the NIC EEPROM register */
172 outb(value, addr + 0x1e);
174 /* now wait the clock line to toggle twice. Effectively, we are
175 waiting (at least) for one clock cycle */
177 for (z = 0; z < 2; z++) {
179 v1 = inb(addr + 0x1e);
180 v2 = inb(addr + 0x1e);
182 while (!((v1 ^ v2) & 0x80));
186 static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr)
188 /* shift data bit into correct position */
192 /* write value, keep clock line high for two cycles */
194 dlink_put_eeprom(0x09 | bit, addr);
195 dlink_put_eeprom(0x0d | bit, addr);
196 dlink_put_eeprom(0x0d | bit, addr);
197 dlink_put_eeprom(0x09 | bit, addr);
200 static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr)
204 /* adjust bits so that they are left-aligned in a 16-bit-word */
206 value = value << (16 - len);
208 /* shift bits out to the EEPROM */
210 for (z = 0; z < len; z++) {
211 dlink_send_eeprom_bit((value & 0x8000) >> 15, addr);
216 static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr)
219 unsigned int value = 0;
221 /* pull the CS line low for a moment. This resets the EEPROM-
222 internal logic, and makes it ready for a new command. */
224 dlink_put_eeprom(0x01, addr);
225 dlink_put_eeprom(0x09, addr);
227 /* send one start bit, read command (1 - 0), plus the address to
230 dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr);
232 /* get the data word. We clock by sending 0s to the EEPROM, which
233 get ignored during the read process */
235 for (z = 0; z < 16; z++) {
236 dlink_send_eeprom_bit(0, addr);
237 value = (value << 1) | (inb(addr + 0x1e) & 0x01);
244 * Note that at boot, this probe only picks up one card at a time.
247 static int __init do_ne2_probe(struct net_device *dev)
249 static int current_mca_slot = -1;
251 int adapter_found = 0;
253 SET_MODULE_OWNER(dev);
255 /* Do not check any supplied i/o locations.
256 POS registers usually don't fail :) */
258 /* MCA cards have POS registers.
259 Autodetecting MCA cards is extremely simple.
260 Just search for the card. */
262 for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) {
264 mca_find_unused_adapter(ne2_adapters[i].id, 0);
266 if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) {
268 mca_set_adapter_name(current_mca_slot,
269 ne2_adapters[i].name);
270 mca_mark_as_used(current_mca_slot);
272 res = ne2_probe1(dev, current_mca_slot);
274 mca_mark_as_unused(current_mca_slot);
281 static void cleanup_card(struct net_device *dev)
283 mca_mark_as_unused(ei_status.priv);
284 mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
285 free_irq(dev->irq, dev);
286 release_region(dev->base_addr, NE_IO_EXTENT);
290 struct net_device * __init ne2_probe(int unit)
292 struct net_device *dev = alloc_ei_netdev();
296 return ERR_PTR(-ENOMEM);
298 sprintf(dev->name, "eth%d", unit);
299 netdev_boot_setup_check(dev);
301 err = do_ne2_probe(dev);
311 static int ne2_procinfo(char *buf, int slot, struct net_device *dev)
315 len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" );
316 len += sprintf(buf+len, "Driver written by Wim Dumon ");
317 len += sprintf(buf+len, "<wimpie@kotnet.org>\n");
318 len += sprintf(buf+len, "Modified by ");
319 len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n");
320 len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n");
321 len += sprintf(buf+len, "Based on the original NE2000 drivers\n" );
322 len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr);
323 len += sprintf(buf+len, "IRQ : %d\n", dev->irq);
325 #define HW_ADDR(i) dev->dev_addr[i]
326 len += sprintf(buf+len, "HW addr : %x:%x:%x:%x:%x:%x\n",
327 HW_ADDR(0), HW_ADDR(1), HW_ADDR(2),
328 HW_ADDR(3), HW_ADDR(4), HW_ADDR(5) );
334 static int __init ne2_probe1(struct net_device *dev, int slot)
336 int i, base_addr, irq, retval;
338 unsigned char SA_prom[32];
339 const char *name = "NE/2";
340 int start_page, stop_page;
341 static unsigned version_printed;
343 if (ei_debug && version_printed++ == 0)
346 printk("NE/2 ethercard found in slot %d:", slot);
348 /* Read base IO and IRQ from the POS-registers */
349 POS = mca_read_stored_pos(slot, 2);
351 printk(" disabled.\n");
355 /* handle different POS register structure for D-Link card */
357 if (mca_read_stored_pos(slot, 0) == 0xea) {
358 base_addr = dlink_addresses[(POS >> 5) & 0x03];
359 irq = dlink_irqs[(POS >> 2) & 0x07];
363 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0"
364 " en zou het moeten werken -> %d\n", i);
365 The above line was for remote testing, thanx to sdog ... */
366 base_addr = addresses[i - 1];
367 irq = irqs[(POS & 0x60)>>5];
370 if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME))
374 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS,
379 /* Reset the card the way they do it in the Crynwr packet driver */
381 outb(0x0, base_addr + NE_RESET);
382 inb(base_addr + NE_RESET);
383 outb(0x21, base_addr + NE_CMD);
384 if (inb(base_addr + NE_CMD) != 0x21) {
385 printk("NE/2 adapter not responding\n");
390 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose
391 my RAM is okay. Suppose your memory is broken. Then this test
392 should fail and you won't be able to use your card. But if I do not
393 test, you won't be able to use your card, neither. So this test
396 #else /* _I_ never tested it this way .. Go ahead and try ...*/
397 /* Reset card. Who knows what dain-bramaged state it was left in. */
399 unsigned long reset_start_time = jiffies;
401 /* DON'T change these to inb_p/outb_p or reset will fail on
403 outb(inb(base_addr + NE_RESET), base_addr + NE_RESET);
405 while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0)
406 if (jiffies - reset_start_time > 2*HZ/100) {
407 printk(" not found (no reset ack).\n");
412 outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */
417 /* Read the 16 bytes of station address PROM.
418 We must first initialize registers, similar to
419 NS8390_init(eifdev, 0).
420 We can't reliably read the SAPROM address without this.
421 (I learned the hard way!). */
424 unsigned char value, offset;
427 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD},
428 {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */
429 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
431 {0x00, EN0_IMR}, /* Mask completion irq. */
433 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
434 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
437 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
439 {E8390_RREAD+E8390_START, E8390_CMD},
442 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
443 outb_p(program_seq[i].value, base_addr +
444 program_seq[i].offset);
447 for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) {
448 SA_prom[i] = inb(base_addr + NE_DATAPORT);
451 /* I don't know whether the previous sequence includes the general
452 board reset procedure, so better don't omit it and just overwrite
453 the garbage read from a DE-320 with correct stuff. */
455 if (mca_read_stored_pos(slot, 0) == 0xea) {
458 for (i = 0; i < 3; i++) {
459 v = dlink_get_eeprom(i, base_addr);
460 SA_prom[(i << 1) ] = v & 0xff;
461 SA_prom[(i << 1) + 1] = (v >> 8) & 0xff;
465 start_page = NESM_START_PG;
466 stop_page = NESM_STOP_PG;
470 /* Snarf the interrupt now. There's no point in waiting since we cannot
471 share and the board will usually be enabled. */
472 retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
474 printk (" unable to get IRQ %d (irqval=%d).\n",
479 dev->base_addr = base_addr;
481 for(i = 0; i < ETHER_ADDR_LEN; i++) {
482 printk(" %2.2x", SA_prom[i]);
483 dev->dev_addr[i] = SA_prom[i];
486 printk("\n%s: %s found at %#x, using IRQ %d.\n",
487 dev->name, name, base_addr, dev->irq);
489 mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev);
491 ei_status.name = name;
492 ei_status.tx_start_page = start_page;
493 ei_status.stop_page = stop_page;
494 ei_status.word16 = (2 == 2);
496 ei_status.rx_start_page = start_page + TX_PAGES;
497 #ifdef PACKETBUF_MEMSIZE
498 /* Allow the packet buffer size to be overridden by know-it-alls. */
499 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
502 ei_status.reset_8390 = &ne_reset_8390;
503 ei_status.block_input = &ne_block_input;
504 ei_status.block_output = &ne_block_output;
505 ei_status.get_8390_hdr = &ne_get_8390_hdr;
507 ei_status.priv = slot;
509 dev->open = &ne_open;
510 dev->stop = &ne_close;
511 #ifdef CONFIG_NET_POLL_CONTROLLER
512 dev->poll_controller = ei_poll;
516 retval = register_netdev(dev);
521 mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
522 free_irq(dev->irq, dev);
524 release_region(base_addr, NE_IO_EXTENT);
528 static int ne_open(struct net_device *dev)
534 static int ne_close(struct net_device *dev)
537 printk("%s: Shutting down ethercard.\n", dev->name);
542 /* Hard reset the card. This used to pause for the same period that a
543 8390 reset command required, but that shouldn't be necessary. */
544 static void ne_reset_8390(struct net_device *dev)
546 unsigned long reset_start_time = jiffies;
549 printk("resetting the 8390 t=%ld...", jiffies);
551 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
552 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
555 ei_status.dmaing = 0;
557 /* This check _should_not_ be necessary, omit eventually. */
558 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
559 if (jiffies - reset_start_time > 2*HZ/100) {
560 printk("%s: ne_reset_8390() did not complete.\n",
564 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
567 /* Grab the 8390 specific header. Similar to the block_input routine, but
568 we don't need to be concerned with ring wrap as the header will be at
569 the start of a page, so we optimize accordingly. */
571 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
575 int nic_base = dev->base_addr;
577 /* This *shouldn't* happen.
578 If it does, it's the last thing you'll see */
579 if (ei_status.dmaing) {
580 printk("%s: DMAing conflict in ne_get_8390_hdr "
581 "[DMAstat:%d][irqlock:%d].\n",
582 dev->name, ei_status.dmaing, ei_status.irqlock);
586 ei_status.dmaing |= 0x01;
587 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
588 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
589 outb_p(0, nic_base + EN0_RCNTHI);
590 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
591 outb_p(ring_page, nic_base + EN0_RSARHI);
592 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
594 if (ei_status.word16)
595 insw(NE_BASE + NE_DATAPORT, hdr,
596 sizeof(struct e8390_pkt_hdr)>>1);
598 insb(NE_BASE + NE_DATAPORT, hdr,
599 sizeof(struct e8390_pkt_hdr));
601 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
602 ei_status.dmaing &= ~0x01;
605 /* Block input and output, similar to the Crynwr packet driver. If you
606 are porting to a new ethercard, look at the packet driver source for
607 hints. The NEx000 doesn't share the on-board packet memory -- you have
608 to put the packet out through the "remote DMA" dataport using outb. */
610 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb,
613 #ifdef NE_SANITY_CHECK
614 int xfer_count = count;
616 int nic_base = dev->base_addr;
617 char *buf = skb->data;
619 /* This *shouldn't* happen.
620 If it does, it's the last thing you'll see */
621 if (ei_status.dmaing) {
622 printk("%s: DMAing conflict in ne_block_input "
623 "[DMAstat:%d][irqlock:%d].\n",
624 dev->name, ei_status.dmaing, ei_status.irqlock);
627 ei_status.dmaing |= 0x01;
628 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
629 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
630 outb_p(count >> 8, nic_base + EN0_RCNTHI);
631 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
632 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
633 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
634 if (ei_status.word16) {
635 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
637 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
638 #ifdef NE_SANITY_CHECK
643 insb(NE_BASE + NE_DATAPORT, buf, count);
646 #ifdef NE_SANITY_CHECK
647 /* This was for the ALPHA version only, but enough people have
648 been encountering problems so it is still here. If you see
649 this message you either 1) have a slightly incompatible clone
650 or 2) have noise/speed problems with your bus. */
651 if (ei_debug > 1) { /* DMA termination address check... */
652 int addr, tries = 20;
654 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
655 -- it's broken for Rx on some cards! */
656 int high = inb_p(nic_base + EN0_RSARHI);
657 int low = inb_p(nic_base + EN0_RSARLO);
658 addr = (high << 8) + low;
659 if (((ring_offset + xfer_count) & 0xff) == low)
661 } while (--tries > 0);
663 printk("%s: RX transfer address mismatch,"
664 "%#4.4x (expected) vs. %#4.4x (actual).\n",
665 dev->name, ring_offset + xfer_count, addr);
668 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
669 ei_status.dmaing &= ~0x01;
672 static void ne_block_output(struct net_device *dev, int count,
673 const unsigned char *buf, const int start_page)
675 int nic_base = NE_BASE;
676 unsigned long dma_start;
677 #ifdef NE_SANITY_CHECK
681 /* Round the count up for word writes. Do we need to do this?
682 What effect will an odd byte count have on the 8390?
683 I should check someday. */
684 if (ei_status.word16 && (count & 0x01))
687 /* This *shouldn't* happen.
688 If it does, it's the last thing you'll see */
689 if (ei_status.dmaing) {
690 printk("%s: DMAing conflict in ne_block_output."
691 "[DMAstat:%d][irqlock:%d]\n",
692 dev->name, ei_status.dmaing, ei_status.irqlock);
695 ei_status.dmaing |= 0x01;
696 /* We should already be in page 0, but to be safe... */
697 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
699 #ifdef NE_SANITY_CHECK
703 #ifdef NE8390_RW_BUGFIX
704 /* Handle the read-before-write bug the same way as the
705 Crynwr packet driver -- the NatSemi method doesn't work.
706 Actually this doesn't always work either, but if you have
707 problems with your NEx000 this is better than nothing! */
708 outb_p(0x42, nic_base + EN0_RCNTLO);
709 outb_p(0x00, nic_base + EN0_RCNTHI);
710 outb_p(0x42, nic_base + EN0_RSARLO);
711 outb_p(0x00, nic_base + EN0_RSARHI);
712 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
713 /* Make certain that the dummy read has occurred. */
719 outb_p(ENISR_RDC, nic_base + EN0_ISR);
721 /* Now the normal output. */
722 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
723 outb_p(count >> 8, nic_base + EN0_RCNTHI);
724 outb_p(0x00, nic_base + EN0_RSARLO);
725 outb_p(start_page, nic_base + EN0_RSARHI);
727 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
728 if (ei_status.word16) {
729 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
731 outsb(NE_BASE + NE_DATAPORT, buf, count);
736 #ifdef NE_SANITY_CHECK
737 /* This was for the ALPHA version only, but enough people have
738 been encountering problems so it is still here. */
740 if (ei_debug > 1) { /* DMA termination address check... */
741 int addr, tries = 20;
743 int high = inb_p(nic_base + EN0_RSARHI);
744 int low = inb_p(nic_base + EN0_RSARLO);
745 addr = (high << 8) + low;
746 if ((start_page << 8) + count == addr)
748 } while (--tries > 0);
750 printk("%s: Tx packet transfer address mismatch,"
751 "%#4.4x (expected) vs. %#4.4x (actual).\n",
752 dev->name, (start_page << 8) + count, addr);
759 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
760 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
761 printk("%s: timeout waiting for Tx RDC.\n", dev->name);
767 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
768 ei_status.dmaing &= ~0x01;
774 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
775 static struct net_device *dev_ne[MAX_NE_CARDS];
776 static int io[MAX_NE_CARDS];
777 static int irq[MAX_NE_CARDS];
778 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
779 MODULE_LICENSE("GPL");
781 module_param_array(io, int, NULL, 0);
782 module_param_array(irq, int, NULL, 0);
783 module_param_array(bad, int, NULL, 0);
784 MODULE_PARM_DESC(io, "(ignored)");
785 MODULE_PARM_DESC(irq, "(ignored)");
786 MODULE_PARM_DESC(bad, "(ignored)");
788 /* Module code fixed by David Weinehall */
790 int init_module(void)
792 struct net_device *dev;
793 int this_dev, found = 0;
795 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
796 dev = alloc_ei_netdev();
799 dev->irq = irq[this_dev];
800 dev->mem_end = bad[this_dev];
801 dev->base_addr = io[this_dev];
802 if (do_ne2_probe(dev) == 0) {
803 dev_ne[found++] = dev;
811 printk(KERN_WARNING "ne2.c: No NE/2 card found\n");
815 void cleanup_module(void)
819 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
820 struct net_device *dev = dev_ne[this_dev];
822 unregister_netdev(dev);