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.
32 Hayato Fujiwara : Add m32r support.
36 /* Routines for the NatSemi-based designs (NE[12]000). */
38 static const char version1[] =
39 "ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
40 static const char version2[] =
41 "Last modified Nov 1, 2000 by Paul Gortmaker\n";
44 #include <linux/module.h>
45 #include <linux/kernel.h>
46 #include <linux/errno.h>
47 #include <linux/isapnp.h>
48 #include <linux/init.h>
49 #include <linux/interrupt.h>
50 #include <linux/delay.h>
51 #include <linux/netdevice.h>
52 #include <linux/etherdevice.h>
54 #include <asm/system.h>
57 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
58 #include <asm/tx4938/rbtx4938.h>
65 /* Some defines that people can play with if so inclined. */
67 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
68 #define SUPPORT_NE_BAD_CLONES
70 /* Do we perform extra sanity checks on stuff ? */
71 /* #define NE_SANITY_CHECK */
73 /* Do we implement the read before write bugfix ? */
74 /* #define NE_RW_BUGFIX */
76 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
77 /* #define PACKETBUF_MEMSIZE 0x40 */
79 /* A zero-terminated list of I/O addresses to be probed at boot. */
81 static unsigned int netcard_portlist[] __initdata = {
82 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
86 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
87 { ISAPNP_CARD_ID('A','X','E',0x2011),
88 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
89 (long) "NetGear EA201" },
90 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
91 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
93 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
94 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
95 (long) "Generic PNP" },
96 { } /* terminate list */
99 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
101 #ifdef SUPPORT_NE_BAD_CLONES
102 /* A list of bad clones that we none-the-less recognize. */
103 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
104 bad_clone_list[] __initdata = {
105 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
106 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
107 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
108 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
109 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
110 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
111 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
112 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
113 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
114 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
115 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
116 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
117 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
118 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
119 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
121 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
126 /* ---- No user-serviceable parts below ---- */
128 #define NE_BASE (dev->base_addr)
130 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
131 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
132 #define NE_IO_EXTENT 0x20
134 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
135 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
136 #define NESM_START_PG 0x40 /* First page of TX buffer */
137 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
139 #if defined(CONFIG_PLAT_MAPPI)
140 # define DCR_VAL 0x4b
141 #elif defined(CONFIG_PLAT_OAKS32R)
142 # define DCR_VAL 0x48
144 # define DCR_VAL 0x49
147 static int ne_probe1(struct net_device *dev, int ioaddr);
148 static int ne_probe_isapnp(struct net_device *dev);
150 static int ne_open(struct net_device *dev);
151 static int ne_close(struct net_device *dev);
153 static void ne_reset_8390(struct net_device *dev);
154 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
156 static void ne_block_input(struct net_device *dev, int count,
157 struct sk_buff *skb, int ring_offset);
158 static void ne_block_output(struct net_device *dev, const int count,
159 const unsigned char *buf, const int start_page);
162 /* Probe for various non-shared-memory ethercards.
164 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
165 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
166 the SAPROM, while other supposed NE2000 clones must be detected by their
169 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
170 mode results in doubled values, which can be detected and compensated for.
172 The probe is also responsible for initializing the card and filling
173 in the 'dev' and 'ei_status' structures.
175 We use the minimum memory size for some ethercard product lines, iff we can't
176 distinguish models. You can increase the packet buffer size by setting
177 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
178 E1010 starts at 0x100 and ends at 0x2000.
179 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
180 E2010 starts at 0x100 and ends at 0x4000.
181 E2010-x starts at 0x100 and ends at 0xffff. */
183 static int __init do_ne_probe(struct net_device *dev)
185 unsigned int base_addr = dev->base_addr;
187 int orig_irq = dev->irq;
190 SET_MODULE_OWNER(dev);
192 /* First check any supplied i/o locations. User knows best. <cough> */
193 if (base_addr > 0x1ff) /* Check a single specified location. */
194 return ne_probe1(dev, base_addr);
195 else if (base_addr != 0) /* Don't probe at all. */
198 /* Then look for any installed ISAPnP clones */
199 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
203 /* Last resort. The semi-risky ISA auto-probe. */
204 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
205 int ioaddr = netcard_portlist[base_addr];
207 if (ne_probe1(dev, ioaddr) == 0)
215 static void cleanup_card(struct net_device *dev)
217 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
219 pnp_device_detach(idev);
220 free_irq(dev->irq, dev);
221 release_region(dev->base_addr, NE_IO_EXTENT);
225 struct net_device * __init ne_probe(int unit)
227 struct net_device *dev = alloc_ei_netdev();
231 return ERR_PTR(-ENOMEM);
233 sprintf(dev->name, "eth%d", unit);
234 netdev_boot_setup_check(dev);
236 #ifdef CONFIG_TOSHIBA_RBTX4938
237 dev->base_addr = 0x07f20280;
238 dev->irq = RBTX4938_RTL_8019_IRQ;
240 err = do_ne_probe(dev);
250 static int __init ne_probe_isapnp(struct net_device *dev)
254 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
255 struct pnp_dev *idev = NULL;
257 while ((idev = pnp_find_dev(NULL,
258 isapnp_clone_list[i].vendor,
259 isapnp_clone_list[i].function,
261 /* Avoid already found cards from previous calls */
262 if (pnp_device_attach(idev) < 0)
264 if (pnp_activate_dev(idev) < 0) {
265 pnp_device_detach(idev);
268 /* if no io and irq, search for next */
269 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
270 pnp_device_detach(idev);
274 dev->base_addr = pnp_port_start(idev, 0);
275 dev->irq = pnp_irq(idev, 0);
276 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
277 (char *) isapnp_clone_list[i].driver_data,
278 dev->base_addr, dev->irq);
279 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
280 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
281 pnp_device_detach(idev);
284 ei_status.priv = (unsigned long)idev;
295 static int __init ne_probe1(struct net_device *dev, int ioaddr)
298 unsigned char SA_prom[32];
300 const char *name = NULL;
301 int start_page, stop_page;
302 int neX000, ctron, copam, bad_card;
304 static unsigned version_printed;
306 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
309 reg0 = inb_p(ioaddr);
315 /* Do a preliminary verification that we have a 8390. */
318 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
319 regd = inb_p(ioaddr + 0x0d);
320 outb_p(0xff, ioaddr + 0x0d);
321 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
322 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
323 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
324 outb_p(reg0, ioaddr);
325 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
331 if (ei_debug && version_printed++ == 0)
332 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
334 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
336 /* A user with a poor card that fails to ack the reset, or that
337 does not have a valid 0x57,0x57 signature can still use this
338 without having to recompile. Specifying an i/o address along
339 with an otherwise unused dev->mem_end value of "0xBAD" will
340 cause the driver to skip these parts of the probe. */
342 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
344 /* Reset card. Who knows what dain-bramaged state it was left in. */
347 unsigned long reset_start_time = jiffies;
349 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
350 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
352 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
353 if (jiffies - reset_start_time > 2*HZ/100) {
355 printk(" (warning: no reset ack)");
358 printk(" not found (no reset ack).\n");
364 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
367 /* Read the 16 bytes of station address PROM.
368 We must first initialize registers, similar to NS8390_init(eifdev, 0).
369 We can't reliably read the SAPROM address without this.
370 (I learned the hard way!). */
372 struct {unsigned char value, offset; } program_seq[] =
374 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
375 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
376 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
378 {0x00, EN0_IMR}, /* Mask completion irq. */
380 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
381 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
384 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
386 {E8390_RREAD+E8390_START, E8390_CMD},
389 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
390 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
393 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
394 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
395 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
396 if (SA_prom[i] != SA_prom[i+1])
402 for (i = 0; i < 16; i++)
403 SA_prom[i] = SA_prom[i+i];
404 /* We must set the 8390 for word mode. */
405 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
406 start_page = NESM_START_PG;
407 stop_page = NESM_STOP_PG;
409 start_page = NE1SM_START_PG;
410 stop_page = NE1SM_STOP_PG;
413 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
414 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
415 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
417 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
419 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
420 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
422 /* Set up the rest of the parameters. */
423 if (neX000 || bad_card || copam) {
424 name = (wordlength == 2) ? "NE2000" : "NE1000";
428 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
430 stop_page = (wordlength == 2) ? 0x40 : 0x20;
434 #ifdef SUPPORT_NE_BAD_CLONES
435 /* Ack! Well, there might be a *bad* NE*000 clone there.
436 Check for total bogus addresses. */
437 for (i = 0; bad_clone_list[i].name8; i++)
439 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
440 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
441 SA_prom[2] == bad_clone_list[i].SAprefix[2])
445 name = bad_clone_list[i].name16;
447 name = bad_clone_list[i].name8;
452 if (bad_clone_list[i].name8 == NULL)
454 printk(" not found (invalid signature %2.2x %2.2x).\n",
455 SA_prom[14], SA_prom[15]);
460 printk(" not found.\n");
468 unsigned long cookie = probe_irq_on();
469 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
470 outb_p(0x00, ioaddr + EN0_RCNTLO);
471 outb_p(0x00, ioaddr + EN0_RCNTHI);
472 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
473 mdelay(10); /* wait 10ms for interrupt to propagate */
474 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
475 dev->irq = probe_irq_off(cookie);
477 printk(" autoirq is %d\n", dev->irq);
478 } else if (dev->irq == 2)
479 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
480 or don't know which one to set. */
484 printk(" failed to detect IRQ line.\n");
489 /* Snarf the interrupt now. There's no point in waiting since we cannot
490 share and the board will usually be enabled. */
491 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
493 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
497 dev->base_addr = ioaddr;
499 #ifdef CONFIG_PLAT_MAPPI
500 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
501 ioaddr + E8390_CMD); /* 0x61 */
502 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
503 dev->dev_addr[i] = SA_prom[i]
504 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
505 printk(" %2.2x", SA_prom[i]);
508 for(i = 0; i < ETHER_ADDR_LEN; i++) {
509 printk(" %2.2x", SA_prom[i]);
510 dev->dev_addr[i] = SA_prom[i];
514 printk("\n%s: %s found at %#x, using IRQ %d.\n",
515 dev->name, name, ioaddr, dev->irq);
517 ei_status.name = name;
518 ei_status.tx_start_page = start_page;
519 ei_status.stop_page = stop_page;
520 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
524 #ifdef CONFIG_PLAT_OAKS32R
525 ei_status.word16 = 0;
527 ei_status.word16 = (wordlength == 2);
530 ei_status.rx_start_page = start_page + TX_PAGES;
531 #ifdef PACKETBUF_MEMSIZE
532 /* Allow the packet buffer size to be overridden by know-it-alls. */
533 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
536 ei_status.reset_8390 = &ne_reset_8390;
537 ei_status.block_input = &ne_block_input;
538 ei_status.block_output = &ne_block_output;
539 ei_status.get_8390_hdr = &ne_get_8390_hdr;
541 dev->open = &ne_open;
542 dev->stop = &ne_close;
543 #ifdef CONFIG_NET_POLL_CONTROLLER
544 dev->poll_controller = ei_poll;
548 ret = register_netdev(dev);
554 free_irq(dev->irq, dev);
556 release_region(ioaddr, NE_IO_EXTENT);
560 static int ne_open(struct net_device *dev)
566 static int ne_close(struct net_device *dev)
569 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
574 /* Hard reset the card. This used to pause for the same period that a
575 8390 reset command required, but that shouldn't be necessary. */
577 static void ne_reset_8390(struct net_device *dev)
579 unsigned long reset_start_time = jiffies;
582 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
584 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
585 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
588 ei_status.dmaing = 0;
590 /* This check _should_not_ be necessary, omit eventually. */
591 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
592 if (jiffies - reset_start_time > 2*HZ/100) {
593 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
596 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
599 /* Grab the 8390 specific header. Similar to the block_input routine, but
600 we don't need to be concerned with ring wrap as the header will be at
601 the start of a page, so we optimize accordingly. */
603 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
605 int nic_base = dev->base_addr;
607 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
609 if (ei_status.dmaing)
611 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
612 "[DMAstat:%d][irqlock:%d].\n",
613 dev->name, ei_status.dmaing, ei_status.irqlock);
617 ei_status.dmaing |= 0x01;
618 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
619 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
620 outb_p(0, nic_base + EN0_RCNTHI);
621 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
622 outb_p(ring_page, nic_base + EN0_RSARHI);
623 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
625 if (ei_status.word16)
626 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
628 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
630 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
631 ei_status.dmaing &= ~0x01;
633 le16_to_cpus(&hdr->count);
636 /* Block input and output, similar to the Crynwr packet driver. If you
637 are porting to a new ethercard, look at the packet driver source for hints.
638 The NEx000 doesn't share the on-board packet memory -- you have to put
639 the packet out through the "remote DMA" dataport using outb. */
641 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
643 #ifdef NE_SANITY_CHECK
644 int xfer_count = count;
646 int nic_base = dev->base_addr;
647 char *buf = skb->data;
649 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
650 if (ei_status.dmaing)
652 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
653 "[DMAstat:%d][irqlock:%d].\n",
654 dev->name, ei_status.dmaing, ei_status.irqlock);
657 ei_status.dmaing |= 0x01;
658 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
659 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
660 outb_p(count >> 8, nic_base + EN0_RCNTHI);
661 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
662 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
663 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
664 if (ei_status.word16)
666 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
669 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
670 #ifdef NE_SANITY_CHECK
675 insb(NE_BASE + NE_DATAPORT, buf, count);
678 #ifdef NE_SANITY_CHECK
679 /* This was for the ALPHA version only, but enough people have
680 been encountering problems so it is still here. If you see
681 this message you either 1) have a slightly incompatible clone
682 or 2) have noise/speed problems with your bus. */
686 /* DMA termination address check... */
687 int addr, tries = 20;
689 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
690 -- it's broken for Rx on some cards! */
691 int high = inb_p(nic_base + EN0_RSARHI);
692 int low = inb_p(nic_base + EN0_RSARLO);
693 addr = (high << 8) + low;
694 if (((ring_offset + xfer_count) & 0xff) == low)
696 } while (--tries > 0);
698 printk(KERN_WARNING "%s: RX transfer address mismatch,"
699 "%#4.4x (expected) vs. %#4.4x (actual).\n",
700 dev->name, ring_offset + xfer_count, addr);
703 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
704 ei_status.dmaing &= ~0x01;
707 static void ne_block_output(struct net_device *dev, int count,
708 const unsigned char *buf, const int start_page)
710 int nic_base = NE_BASE;
711 unsigned long dma_start;
712 #ifdef NE_SANITY_CHECK
716 /* Round the count up for word writes. Do we need to do this?
717 What effect will an odd byte count have on the 8390?
718 I should check someday. */
720 if (ei_status.word16 && (count & 0x01))
723 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
724 if (ei_status.dmaing)
726 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
727 "[DMAstat:%d][irqlock:%d]\n",
728 dev->name, ei_status.dmaing, ei_status.irqlock);
731 ei_status.dmaing |= 0x01;
732 /* We should already be in page 0, but to be safe... */
733 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
735 #ifdef NE_SANITY_CHECK
739 #ifdef NE8390_RW_BUGFIX
740 /* Handle the read-before-write bug the same way as the
741 Crynwr packet driver -- the NatSemi method doesn't work.
742 Actually this doesn't always work either, but if you have
743 problems with your NEx000 this is better than nothing! */
745 outb_p(0x42, nic_base + EN0_RCNTLO);
746 outb_p(0x00, nic_base + EN0_RCNTHI);
747 outb_p(0x42, nic_base + EN0_RSARLO);
748 outb_p(0x00, nic_base + EN0_RSARHI);
749 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
750 /* Make certain that the dummy read has occurred. */
754 outb_p(ENISR_RDC, nic_base + EN0_ISR);
756 /* Now the normal output. */
757 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
758 outb_p(count >> 8, nic_base + EN0_RCNTHI);
759 outb_p(0x00, nic_base + EN0_RSARLO);
760 outb_p(start_page, nic_base + EN0_RSARHI);
762 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
763 if (ei_status.word16) {
764 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
766 outsb(NE_BASE + NE_DATAPORT, buf, count);
771 #ifdef NE_SANITY_CHECK
772 /* This was for the ALPHA version only, but enough people have
773 been encountering problems so it is still here. */
777 /* DMA termination address check... */
778 int addr, tries = 20;
780 int high = inb_p(nic_base + EN0_RSARHI);
781 int low = inb_p(nic_base + EN0_RSARLO);
782 addr = (high << 8) + low;
783 if ((start_page << 8) + count == addr)
785 } while (--tries > 0);
789 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
790 "%#4.4x (expected) vs. %#4.4x (actual).\n",
791 dev->name, (start_page << 8) + count, addr);
798 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
799 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
800 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
806 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
807 ei_status.dmaing &= ~0x01;
813 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
814 static struct net_device *dev_ne[MAX_NE_CARDS];
815 static int io[MAX_NE_CARDS];
816 static int irq[MAX_NE_CARDS];
817 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
819 module_param_array(io, int, NULL, 0);
820 module_param_array(irq, int, NULL, 0);
821 module_param_array(bad, int, NULL, 0);
822 MODULE_PARM_DESC(io, "I/O base address(es),required");
823 MODULE_PARM_DESC(irq, "IRQ number(s)");
824 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
825 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
826 MODULE_LICENSE("GPL");
828 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
829 that the ne2k probe is the last 8390 based probe to take place (as it
830 is at boot) and so the probe will get confused by any other 8390 cards.
831 ISA device autoprobes on a running machine are not recommended anyway. */
833 int init_module(void)
835 int this_dev, found = 0;
837 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
838 struct net_device *dev = alloc_ei_netdev();
841 dev->irq = irq[this_dev];
842 dev->mem_end = bad[this_dev];
843 dev->base_addr = io[this_dev];
844 if (do_ne_probe(dev) == 0) {
845 dev_ne[found++] = dev;
851 if (io[this_dev] != 0)
852 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
854 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
862 void cleanup_module(void)
866 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
867 struct net_device *dev = dev_ne[this_dev];
869 unregister_netdev(dev);