1 /* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
3 Written 1992-94 by Donald Becker.
5 Copyright 1993 United States Government as represented by the
6 Director, National Security Agency.
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
11 The author may be reached as becker@scyld.com, or C/O
12 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
14 This driver should work with many programmed-I/O 8390-based ethernet
15 boards. Currently it supports the NE1000, NE2000, many clones,
16 and some Cabletron products.
20 Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
21 sanity checks and bad clone support optional.
22 Paul Gortmaker : new reset code, reset card after probe at boot.
23 Paul Gortmaker : multiple card support for module users.
24 Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
25 Paul Gortmaker : Allow users with bad cards to avoid full probe.
26 Paul Gortmaker : PCI probe changes, more PCI cards supported.
27 rjohnson@analogic.com : Changed init order so an interrupt will only
28 occur after memory is allocated for dev->priv. Deallocated memory
29 last in cleanup_modue()
30 Richard Guenther : Added support for ISAPnP cards
31 Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
35 /* Routines for the NatSemi-based designs (NE[12]000). */
37 static const char version1[] =
38 "ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
39 static const char version2[] =
40 "Last modified Nov 1, 2000 by Paul Gortmaker\n";
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/sched.h>
46 #include <linux/errno.h>
47 #include <linux/isapnp.h>
48 #include <linux/init.h>
49 #include <linux/delay.h>
50 #include <asm/system.h>
53 #include <linux/netdevice.h>
54 #include <linux/etherdevice.h>
57 /* Some defines that people can play with if so inclined. */
59 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
60 #define SUPPORT_NE_BAD_CLONES
62 /* Do we perform extra sanity checks on stuff ? */
63 /* #define NE_SANITY_CHECK */
65 /* Do we implement the read before write bugfix ? */
66 /* #define NE_RW_BUGFIX */
68 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
69 /* #define PACKETBUF_MEMSIZE 0x40 */
71 /* A zero-terminated list of I/O addresses to be probed at boot. */
73 static unsigned int netcard_portlist[] __initdata = {
74 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
78 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
79 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
80 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
82 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
83 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
84 (long) "Generic PNP" },
85 { } /* terminate list */
88 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
90 #ifdef SUPPORT_NE_BAD_CLONES
91 /* A list of bad clones that we none-the-less recognize. */
92 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
93 bad_clone_list[] __initdata = {
94 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
95 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
96 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
97 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
98 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
99 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
100 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
101 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
102 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
103 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
104 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
105 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
106 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
107 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
112 /* ---- No user-serviceable parts below ---- */
114 #define NE_BASE (dev->base_addr)
116 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
117 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
118 #define NE_IO_EXTENT 0x20
120 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
121 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
122 #define NESM_START_PG 0x40 /* First page of TX buffer */
123 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
125 int ne_probe(struct net_device *dev);
126 static int ne_probe1(struct net_device *dev, int ioaddr);
127 static int ne_probe_isapnp(struct net_device *dev);
129 static int ne_open(struct net_device *dev);
130 static int ne_close(struct net_device *dev);
132 static void ne_reset_8390(struct net_device *dev);
133 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
135 static void ne_block_input(struct net_device *dev, int count,
136 struct sk_buff *skb, int ring_offset);
137 static void ne_block_output(struct net_device *dev, const int count,
138 const unsigned char *buf, const int start_page);
141 /* Probe for various non-shared-memory ethercards.
143 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
144 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
145 the SAPROM, while other supposed NE2000 clones must be detected by their
148 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
149 mode results in doubled values, which can be detected and compensated for.
151 The probe is also responsible for initializing the card and filling
152 in the 'dev' and 'ei_status' structures.
154 We use the minimum memory size for some ethercard product lines, iff we can't
155 distinguish models. You can increase the packet buffer size by setting
156 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
157 E1010 starts at 0x100 and ends at 0x2000.
158 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
159 E2010 starts at 0x100 and ends at 0x4000.
160 E2010-x starts at 0x100 and ends at 0xffff. */
162 int __init ne_probe(struct net_device *dev)
164 unsigned int base_addr = dev->base_addr;
166 SET_MODULE_OWNER(dev);
168 /* First check any supplied i/o locations. User knows best. <cough> */
169 if (base_addr > 0x1ff) /* Check a single specified location. */
170 return ne_probe1(dev, base_addr);
171 else if (base_addr != 0) /* Don't probe at all. */
174 /* Then look for any installed ISAPnP clones */
175 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
179 /* Last resort. The semi-risky ISA auto-probe. */
180 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
181 int ioaddr = netcard_portlist[base_addr];
182 if (ne_probe1(dev, ioaddr) == 0)
190 static int __init ne_probe_isapnp(struct net_device *dev)
194 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
195 struct pci_dev *idev = NULL;
197 while ((idev = isapnp_find_dev(NULL,
198 isapnp_clone_list[i].vendor,
199 isapnp_clone_list[i].function,
201 /* Avoid already found cards from previous calls */
202 if (idev->prepare(idev))
204 if (idev->activate(idev))
206 /* if no irq, search for next */
207 if (idev->irq_resource[0].start == 0)
210 dev->base_addr = idev->resource[0].start;
211 dev->irq = idev->irq_resource[0].start;
212 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
213 (char *) isapnp_clone_list[i].driver_data,
215 dev->base_addr, dev->irq);
216 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
217 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
220 ei_status.priv = (unsigned long)idev;
231 static int __init ne_probe1(struct net_device *dev, int ioaddr)
234 unsigned char SA_prom[32];
236 const char *name = NULL;
237 int start_page, stop_page;
238 int neX000, ctron, copam, bad_card;
240 static unsigned version_printed;
242 if (!request_region(ioaddr, NE_IO_EXTENT, dev->name))
245 reg0 = inb_p(ioaddr);
251 /* Do a preliminary verification that we have a 8390. */
254 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
255 regd = inb_p(ioaddr + 0x0d);
256 outb_p(0xff, ioaddr + 0x0d);
257 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
258 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
259 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
260 outb_p(reg0, ioaddr);
261 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
267 if (ei_debug && version_printed++ == 0)
268 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
270 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
272 /* A user with a poor card that fails to ack the reset, or that
273 does not have a valid 0x57,0x57 signature can still use this
274 without having to recompile. Specifying an i/o address along
275 with an otherwise unused dev->mem_end value of "0xBAD" will
276 cause the driver to skip these parts of the probe. */
278 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
280 /* Reset card. Who knows what dain-bramaged state it was left in. */
283 unsigned long reset_start_time = jiffies;
285 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
286 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
288 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
289 if (jiffies - reset_start_time > 2*HZ/100) {
291 printk(" (warning: no reset ack)");
294 printk(" not found (no reset ack).\n");
300 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
303 /* Read the 16 bytes of station address PROM.
304 We must first initialize registers, similar to NS8390_init(eifdev, 0).
305 We can't reliably read the SAPROM address without this.
306 (I learned the hard way!). */
308 struct {unsigned char value, offset; } program_seq[] =
310 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
311 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
312 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
314 {0x00, EN0_IMR}, /* Mask completion irq. */
316 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
317 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
320 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
322 {E8390_RREAD+E8390_START, E8390_CMD},
325 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
326 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
329 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
330 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
331 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
332 if (SA_prom[i] != SA_prom[i+1])
338 for (i = 0; i < 16; i++)
339 SA_prom[i] = SA_prom[i+i];
340 /* We must set the 8390 for word mode. */
341 outb_p(0x49, ioaddr + EN0_DCFG);
342 start_page = NESM_START_PG;
343 stop_page = NESM_STOP_PG;
345 start_page = NE1SM_START_PG;
346 stop_page = NE1SM_STOP_PG;
349 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
350 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
351 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
353 /* Set up the rest of the parameters. */
354 if (neX000 || bad_card || copam) {
355 name = (wordlength == 2) ? "NE2000" : "NE1000";
359 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
361 stop_page = (wordlength == 2) ? 0x40 : 0x20;
365 #ifdef SUPPORT_NE_BAD_CLONES
366 /* Ack! Well, there might be a *bad* NE*000 clone there.
367 Check for total bogus addresses. */
368 for (i = 0; bad_clone_list[i].name8; i++)
370 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
371 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
372 SA_prom[2] == bad_clone_list[i].SAprefix[2])
376 name = bad_clone_list[i].name16;
378 name = bad_clone_list[i].name8;
383 if (bad_clone_list[i].name8 == NULL)
385 printk(" not found (invalid signature %2.2x %2.2x).\n",
386 SA_prom[14], SA_prom[15]);
391 printk(" not found.\n");
399 unsigned long cookie = probe_irq_on();
400 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
401 outb_p(0x00, ioaddr + EN0_RCNTLO);
402 outb_p(0x00, ioaddr + EN0_RCNTHI);
403 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
404 mdelay(10); /* wait 10ms for interrupt to propagate */
405 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
406 dev->irq = probe_irq_off(cookie);
408 printk(" autoirq is %d\n", dev->irq);
409 } else if (dev->irq == 2)
410 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
411 or don't know which one to set. */
415 printk(" failed to detect IRQ line.\n");
420 /* Allocate dev->priv and fill in 8390 specific dev fields. */
421 if (ethdev_init(dev))
423 printk (" unable to get memory for dev->priv.\n");
428 /* Snarf the interrupt now. There's no point in waiting since we cannot
429 share and the board will usually be enabled. */
430 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
432 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
436 dev->base_addr = ioaddr;
438 for(i = 0; i < ETHER_ADDR_LEN; i++) {
439 printk(" %2.2x", SA_prom[i]);
440 dev->dev_addr[i] = SA_prom[i];
443 printk("\n%s: %s found at %#x, using IRQ %d.\n",
444 dev->name, name, ioaddr, dev->irq);
446 ei_status.name = name;
447 ei_status.tx_start_page = start_page;
448 ei_status.stop_page = stop_page;
449 ei_status.word16 = (wordlength == 2);
451 ei_status.rx_start_page = start_page + TX_PAGES;
452 #ifdef PACKETBUF_MEMSIZE
453 /* Allow the packet buffer size to be overridden by know-it-alls. */
454 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
457 ei_status.reset_8390 = &ne_reset_8390;
458 ei_status.block_input = &ne_block_input;
459 ei_status.block_output = &ne_block_output;
460 ei_status.get_8390_hdr = &ne_get_8390_hdr;
462 dev->open = &ne_open;
463 dev->stop = &ne_close;
471 release_region(ioaddr, NE_IO_EXTENT);
475 static int ne_open(struct net_device *dev)
481 static int ne_close(struct net_device *dev)
484 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
489 /* Hard reset the card. This used to pause for the same period that a
490 8390 reset command required, but that shouldn't be necessary. */
492 static void ne_reset_8390(struct net_device *dev)
494 unsigned long reset_start_time = jiffies;
497 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
499 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
500 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
503 ei_status.dmaing = 0;
505 /* This check _should_not_ be necessary, omit eventually. */
506 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
507 if (jiffies - reset_start_time > 2*HZ/100) {
508 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
511 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
514 /* Grab the 8390 specific header. Similar to the block_input routine, but
515 we don't need to be concerned with ring wrap as the header will be at
516 the start of a page, so we optimize accordingly. */
518 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
520 int nic_base = dev->base_addr;
522 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
524 if (ei_status.dmaing)
526 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
527 "[DMAstat:%d][irqlock:%d].\n",
528 dev->name, ei_status.dmaing, ei_status.irqlock);
532 ei_status.dmaing |= 0x01;
533 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
534 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
535 outb_p(0, nic_base + EN0_RCNTHI);
536 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
537 outb_p(ring_page, nic_base + EN0_RSARHI);
538 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
540 if (ei_status.word16)
541 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
543 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
545 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
546 ei_status.dmaing &= ~0x01;
548 le16_to_cpus(&hdr->count);
551 /* Block input and output, similar to the Crynwr packet driver. If you
552 are porting to a new ethercard, look at the packet driver source for hints.
553 The NEx000 doesn't share the on-board packet memory -- you have to put
554 the packet out through the "remote DMA" dataport using outb. */
556 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
558 #ifdef NE_SANITY_CHECK
559 int xfer_count = count;
561 int nic_base = dev->base_addr;
562 char *buf = skb->data;
564 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
565 if (ei_status.dmaing)
567 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
568 "[DMAstat:%d][irqlock:%d].\n",
569 dev->name, ei_status.dmaing, ei_status.irqlock);
572 ei_status.dmaing |= 0x01;
573 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
574 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
575 outb_p(count >> 8, nic_base + EN0_RCNTHI);
576 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
577 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
578 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
579 if (ei_status.word16)
581 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
584 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
585 #ifdef NE_SANITY_CHECK
590 insb(NE_BASE + NE_DATAPORT, buf, count);
593 #ifdef NE_SANITY_CHECK
594 /* This was for the ALPHA version only, but enough people have
595 been encountering problems so it is still here. If you see
596 this message you either 1) have a slightly incompatible clone
597 or 2) have noise/speed problems with your bus. */
601 /* DMA termination address check... */
602 int addr, tries = 20;
604 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
605 -- it's broken for Rx on some cards! */
606 int high = inb_p(nic_base + EN0_RSARHI);
607 int low = inb_p(nic_base + EN0_RSARLO);
608 addr = (high << 8) + low;
609 if (((ring_offset + xfer_count) & 0xff) == low)
611 } while (--tries > 0);
613 printk(KERN_WARNING "%s: RX transfer address mismatch,"
614 "%#4.4x (expected) vs. %#4.4x (actual).\n",
615 dev->name, ring_offset + xfer_count, addr);
618 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
619 ei_status.dmaing &= ~0x01;
622 static void ne_block_output(struct net_device *dev, int count,
623 const unsigned char *buf, const int start_page)
625 int nic_base = NE_BASE;
626 unsigned long dma_start;
627 #ifdef NE_SANITY_CHECK
631 /* Round the count up for word writes. Do we need to do this?
632 What effect will an odd byte count have on the 8390?
633 I should check someday. */
635 if (ei_status.word16 && (count & 0x01))
638 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
639 if (ei_status.dmaing)
641 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
642 "[DMAstat:%d][irqlock:%d]\n",
643 dev->name, ei_status.dmaing, ei_status.irqlock);
646 ei_status.dmaing |= 0x01;
647 /* We should already be in page 0, but to be safe... */
648 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
650 #ifdef NE_SANITY_CHECK
654 #ifdef NE8390_RW_BUGFIX
655 /* Handle the read-before-write bug the same way as the
656 Crynwr packet driver -- the NatSemi method doesn't work.
657 Actually this doesn't always work either, but if you have
658 problems with your NEx000 this is better than nothing! */
660 outb_p(0x42, nic_base + EN0_RCNTLO);
661 outb_p(0x00, nic_base + EN0_RCNTHI);
662 outb_p(0x42, nic_base + EN0_RSARLO);
663 outb_p(0x00, nic_base + EN0_RSARHI);
664 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
665 /* Make certain that the dummy read has occurred. */
669 outb_p(ENISR_RDC, nic_base + EN0_ISR);
671 /* Now the normal output. */
672 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
673 outb_p(count >> 8, nic_base + EN0_RCNTHI);
674 outb_p(0x00, nic_base + EN0_RSARLO);
675 outb_p(start_page, nic_base + EN0_RSARHI);
677 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
678 if (ei_status.word16) {
679 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
681 outsb(NE_BASE + NE_DATAPORT, buf, count);
686 #ifdef NE_SANITY_CHECK
687 /* This was for the ALPHA version only, but enough people have
688 been encountering problems so it is still here. */
692 /* DMA termination address check... */
693 int addr, tries = 20;
695 int high = inb_p(nic_base + EN0_RSARHI);
696 int low = inb_p(nic_base + EN0_RSARLO);
697 addr = (high << 8) + low;
698 if ((start_page << 8) + count == addr)
700 } while (--tries > 0);
704 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
705 "%#4.4x (expected) vs. %#4.4x (actual).\n",
706 dev->name, (start_page << 8) + count, addr);
713 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
714 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
715 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
721 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
722 ei_status.dmaing &= ~0x01;
728 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
729 static struct net_device dev_ne[MAX_NE_CARDS];
730 static int io[MAX_NE_CARDS];
731 static int irq[MAX_NE_CARDS];
732 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
734 MODULE_PARM(io, "1-" __MODULE_STRING(MAX_NE_CARDS) "i");
735 MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_NE_CARDS) "i");
736 MODULE_PARM(bad, "1-" __MODULE_STRING(MAX_NE_CARDS) "i");
737 MODULE_PARM_DESC(io, "I/O base address(es),required");
738 MODULE_PARM_DESC(irq, "IRQ number(s)");
739 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
740 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
741 MODULE_LICENSE("GPL");
743 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
744 that the ne2k probe is the last 8390 based probe to take place (as it
745 is at boot) and so the probe will get confused by any other 8390 cards.
746 ISA device autoprobes on a running machine are not recommended anyway. */
748 int init_module(void)
750 int this_dev, found = 0;
752 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
753 struct net_device *dev = &dev_ne[this_dev];
754 dev->irq = irq[this_dev];
755 dev->mem_end = bad[this_dev];
756 dev->base_addr = io[this_dev];
757 dev->init = ne_probe;
758 if (register_netdev(dev) == 0) {
762 if (found != 0) { /* Got at least one. */
765 if (io[this_dev] != 0)
766 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
768 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
774 void cleanup_module(void)
778 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
779 struct net_device *dev = &dev_ne[this_dev];
780 if (dev->priv != NULL) {
781 void *priv = dev->priv;
782 struct pci_dev *idev = (struct pci_dev *)ei_status.priv;
784 idev->deactivate(idev);
785 free_irq(dev->irq, dev);
786 release_region(dev->base_addr, NE_IO_EXTENT);
787 unregister_netdev(dev);
797 * compile-command: "gcc -DKERNEL -Wall -O6 -fomit-frame-pointer -I/usr/src/linux/net/tcp -c ne.c"
799 * kept-new-versions: 5