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)
216 struct net_device * __init ne_probe(int unit)
218 struct net_device *dev = alloc_ei_netdev();
222 return ERR_PTR(-ENOMEM);
224 sprintf(dev->name, "eth%d", unit);
225 netdev_boot_setup_check(dev);
227 #ifdef CONFIG_TOSHIBA_RBTX4938
228 dev->base_addr = 0x07f20280;
229 dev->irq = RBTX4938_RTL_8019_IRQ;
231 err = do_ne_probe(dev);
241 static int __init ne_probe_isapnp(struct net_device *dev)
245 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
246 struct pnp_dev *idev = NULL;
248 while ((idev = pnp_find_dev(NULL,
249 isapnp_clone_list[i].vendor,
250 isapnp_clone_list[i].function,
252 /* Avoid already found cards from previous calls */
253 if (pnp_device_attach(idev) < 0)
255 if (pnp_activate_dev(idev) < 0) {
256 pnp_device_detach(idev);
259 /* if no io and irq, search for next */
260 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
261 pnp_device_detach(idev);
265 dev->base_addr = pnp_port_start(idev, 0);
266 dev->irq = pnp_irq(idev, 0);
267 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
268 (char *) isapnp_clone_list[i].driver_data,
269 dev->base_addr, dev->irq);
270 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
271 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
272 pnp_device_detach(idev);
275 ei_status.priv = (unsigned long)idev;
286 static int __init ne_probe1(struct net_device *dev, int ioaddr)
289 unsigned char SA_prom[32];
291 const char *name = NULL;
292 int start_page, stop_page;
293 int neX000, ctron, copam, bad_card;
295 static unsigned version_printed;
297 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
300 reg0 = inb_p(ioaddr);
306 /* Do a preliminary verification that we have a 8390. */
309 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
310 regd = inb_p(ioaddr + 0x0d);
311 outb_p(0xff, ioaddr + 0x0d);
312 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
313 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
314 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
315 outb_p(reg0, ioaddr);
316 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
322 if (ei_debug && version_printed++ == 0)
323 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
325 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
327 /* A user with a poor card that fails to ack the reset, or that
328 does not have a valid 0x57,0x57 signature can still use this
329 without having to recompile. Specifying an i/o address along
330 with an otherwise unused dev->mem_end value of "0xBAD" will
331 cause the driver to skip these parts of the probe. */
333 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
335 /* Reset card. Who knows what dain-bramaged state it was left in. */
338 unsigned long reset_start_time = jiffies;
340 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
341 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
343 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
344 if (jiffies - reset_start_time > 2*HZ/100) {
346 printk(" (warning: no reset ack)");
349 printk(" not found (no reset ack).\n");
355 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
358 /* Read the 16 bytes of station address PROM.
359 We must first initialize registers, similar to NS8390_init(eifdev, 0).
360 We can't reliably read the SAPROM address without this.
361 (I learned the hard way!). */
363 struct {unsigned char value, offset; } program_seq[] =
365 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
366 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
367 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
369 {0x00, EN0_IMR}, /* Mask completion irq. */
371 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
372 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
375 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
377 {E8390_RREAD+E8390_START, E8390_CMD},
380 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
381 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
384 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
385 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
386 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
387 if (SA_prom[i] != SA_prom[i+1])
393 for (i = 0; i < 16; i++)
394 SA_prom[i] = SA_prom[i+i];
395 /* We must set the 8390 for word mode. */
396 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
397 start_page = NESM_START_PG;
398 stop_page = NESM_STOP_PG;
400 start_page = NE1SM_START_PG;
401 stop_page = NE1SM_STOP_PG;
404 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
405 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
406 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
408 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
410 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
411 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
413 /* Set up the rest of the parameters. */
414 if (neX000 || bad_card || copam) {
415 name = (wordlength == 2) ? "NE2000" : "NE1000";
419 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
421 stop_page = (wordlength == 2) ? 0x40 : 0x20;
425 #ifdef SUPPORT_NE_BAD_CLONES
426 /* Ack! Well, there might be a *bad* NE*000 clone there.
427 Check for total bogus addresses. */
428 for (i = 0; bad_clone_list[i].name8; i++)
430 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
431 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
432 SA_prom[2] == bad_clone_list[i].SAprefix[2])
436 name = bad_clone_list[i].name16;
438 name = bad_clone_list[i].name8;
443 if (bad_clone_list[i].name8 == NULL)
445 printk(" not found (invalid signature %2.2x %2.2x).\n",
446 SA_prom[14], SA_prom[15]);
451 printk(" not found.\n");
459 unsigned long cookie = probe_irq_on();
460 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
461 outb_p(0x00, ioaddr + EN0_RCNTLO);
462 outb_p(0x00, ioaddr + EN0_RCNTHI);
463 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
464 mdelay(10); /* wait 10ms for interrupt to propagate */
465 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
466 dev->irq = probe_irq_off(cookie);
468 printk(" autoirq is %d\n", dev->irq);
469 } else if (dev->irq == 2)
470 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
471 or don't know which one to set. */
475 printk(" failed to detect IRQ line.\n");
480 /* Snarf the interrupt now. There's no point in waiting since we cannot
481 share and the board will usually be enabled. */
482 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
484 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
488 dev->base_addr = ioaddr;
490 #ifdef CONFIG_PLAT_MAPPI
491 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
492 ioaddr + E8390_CMD); /* 0x61 */
493 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
494 dev->dev_addr[i] = SA_prom[i]
495 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
496 printk(" %2.2x", SA_prom[i]);
499 for(i = 0; i < ETHER_ADDR_LEN; i++) {
500 printk(" %2.2x", SA_prom[i]);
501 dev->dev_addr[i] = SA_prom[i];
505 printk("\n%s: %s found at %#x, using IRQ %d.\n",
506 dev->name, name, ioaddr, dev->irq);
508 ei_status.name = name;
509 ei_status.tx_start_page = start_page;
510 ei_status.stop_page = stop_page;
511 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
515 #ifdef CONFIG_PLAT_OAKS32R
516 ei_status.word16 = 0;
518 ei_status.word16 = (wordlength == 2);
521 ei_status.rx_start_page = start_page + TX_PAGES;
522 #ifdef PACKETBUF_MEMSIZE
523 /* Allow the packet buffer size to be overridden by know-it-alls. */
524 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
527 ei_status.reset_8390 = &ne_reset_8390;
528 ei_status.block_input = &ne_block_input;
529 ei_status.block_output = &ne_block_output;
530 ei_status.get_8390_hdr = &ne_get_8390_hdr;
532 dev->open = &ne_open;
533 dev->stop = &ne_close;
534 #ifdef CONFIG_NET_POLL_CONTROLLER
535 dev->poll_controller = ei_poll;
539 ret = register_netdev(dev);
545 free_irq(dev->irq, dev);
547 release_region(ioaddr, NE_IO_EXTENT);
551 static int ne_open(struct net_device *dev)
557 static int ne_close(struct net_device *dev)
560 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
565 /* Hard reset the card. This used to pause for the same period that a
566 8390 reset command required, but that shouldn't be necessary. */
568 static void ne_reset_8390(struct net_device *dev)
570 unsigned long reset_start_time = jiffies;
573 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
575 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
576 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
579 ei_status.dmaing = 0;
581 /* This check _should_not_ be necessary, omit eventually. */
582 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
583 if (jiffies - reset_start_time > 2*HZ/100) {
584 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
587 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
590 /* Grab the 8390 specific header. Similar to the block_input routine, but
591 we don't need to be concerned with ring wrap as the header will be at
592 the start of a page, so we optimize accordingly. */
594 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
596 int nic_base = dev->base_addr;
598 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
600 if (ei_status.dmaing)
602 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
603 "[DMAstat:%d][irqlock:%d].\n",
604 dev->name, ei_status.dmaing, ei_status.irqlock);
608 ei_status.dmaing |= 0x01;
609 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
610 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
611 outb_p(0, nic_base + EN0_RCNTHI);
612 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
613 outb_p(ring_page, nic_base + EN0_RSARHI);
614 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
616 if (ei_status.word16)
617 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
619 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
621 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
622 ei_status.dmaing &= ~0x01;
624 le16_to_cpus(&hdr->count);
627 /* Block input and output, similar to the Crynwr packet driver. If you
628 are porting to a new ethercard, look at the packet driver source for hints.
629 The NEx000 doesn't share the on-board packet memory -- you have to put
630 the packet out through the "remote DMA" dataport using outb. */
632 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
634 #ifdef NE_SANITY_CHECK
635 int xfer_count = count;
637 int nic_base = dev->base_addr;
638 char *buf = skb->data;
640 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
641 if (ei_status.dmaing)
643 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
644 "[DMAstat:%d][irqlock:%d].\n",
645 dev->name, ei_status.dmaing, ei_status.irqlock);
648 ei_status.dmaing |= 0x01;
649 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
650 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
651 outb_p(count >> 8, nic_base + EN0_RCNTHI);
652 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
653 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
654 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
655 if (ei_status.word16)
657 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
660 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
661 #ifdef NE_SANITY_CHECK
666 insb(NE_BASE + NE_DATAPORT, buf, count);
669 #ifdef NE_SANITY_CHECK
670 /* This was for the ALPHA version only, but enough people have
671 been encountering problems so it is still here. If you see
672 this message you either 1) have a slightly incompatible clone
673 or 2) have noise/speed problems with your bus. */
677 /* DMA termination address check... */
678 int addr, tries = 20;
680 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
681 -- it's broken for Rx on some cards! */
682 int high = inb_p(nic_base + EN0_RSARHI);
683 int low = inb_p(nic_base + EN0_RSARLO);
684 addr = (high << 8) + low;
685 if (((ring_offset + xfer_count) & 0xff) == low)
687 } while (--tries > 0);
689 printk(KERN_WARNING "%s: RX transfer address mismatch,"
690 "%#4.4x (expected) vs. %#4.4x (actual).\n",
691 dev->name, ring_offset + xfer_count, addr);
694 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
695 ei_status.dmaing &= ~0x01;
698 static void ne_block_output(struct net_device *dev, int count,
699 const unsigned char *buf, const int start_page)
701 int nic_base = NE_BASE;
702 unsigned long dma_start;
703 #ifdef NE_SANITY_CHECK
707 /* Round the count up for word writes. Do we need to do this?
708 What effect will an odd byte count have on the 8390?
709 I should check someday. */
711 if (ei_status.word16 && (count & 0x01))
714 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
715 if (ei_status.dmaing)
717 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
718 "[DMAstat:%d][irqlock:%d]\n",
719 dev->name, ei_status.dmaing, ei_status.irqlock);
722 ei_status.dmaing |= 0x01;
723 /* We should already be in page 0, but to be safe... */
724 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
726 #ifdef NE_SANITY_CHECK
730 #ifdef NE8390_RW_BUGFIX
731 /* Handle the read-before-write bug the same way as the
732 Crynwr packet driver -- the NatSemi method doesn't work.
733 Actually this doesn't always work either, but if you have
734 problems with your NEx000 this is better than nothing! */
736 outb_p(0x42, nic_base + EN0_RCNTLO);
737 outb_p(0x00, nic_base + EN0_RCNTHI);
738 outb_p(0x42, nic_base + EN0_RSARLO);
739 outb_p(0x00, nic_base + EN0_RSARHI);
740 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
741 /* Make certain that the dummy read has occurred. */
745 outb_p(ENISR_RDC, nic_base + EN0_ISR);
747 /* Now the normal output. */
748 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
749 outb_p(count >> 8, nic_base + EN0_RCNTHI);
750 outb_p(0x00, nic_base + EN0_RSARLO);
751 outb_p(start_page, nic_base + EN0_RSARHI);
753 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
754 if (ei_status.word16) {
755 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
757 outsb(NE_BASE + NE_DATAPORT, buf, count);
762 #ifdef NE_SANITY_CHECK
763 /* This was for the ALPHA version only, but enough people have
764 been encountering problems so it is still here. */
768 /* DMA termination address check... */
769 int addr, tries = 20;
771 int high = inb_p(nic_base + EN0_RSARHI);
772 int low = inb_p(nic_base + EN0_RSARLO);
773 addr = (high << 8) + low;
774 if ((start_page << 8) + count == addr)
776 } while (--tries > 0);
780 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
781 "%#4.4x (expected) vs. %#4.4x (actual).\n",
782 dev->name, (start_page << 8) + count, addr);
789 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
790 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
791 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
797 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
798 ei_status.dmaing &= ~0x01;
804 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
805 static struct net_device *dev_ne[MAX_NE_CARDS];
806 static int io[MAX_NE_CARDS];
807 static int irq[MAX_NE_CARDS];
808 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
810 module_param_array(io, int, NULL, 0);
811 module_param_array(irq, int, NULL, 0);
812 module_param_array(bad, int, NULL, 0);
813 MODULE_PARM_DESC(io, "I/O base address(es),required");
814 MODULE_PARM_DESC(irq, "IRQ number(s)");
815 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
816 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
817 MODULE_LICENSE("GPL");
819 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
820 that the ne2k probe is the last 8390 based probe to take place (as it
821 is at boot) and so the probe will get confused by any other 8390 cards.
822 ISA device autoprobes on a running machine are not recommended anyway. */
824 int init_module(void)
826 int this_dev, found = 0;
828 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
829 struct net_device *dev = alloc_ei_netdev();
832 dev->irq = irq[this_dev];
833 dev->mem_end = bad[this_dev];
834 dev->base_addr = io[this_dev];
835 if (do_ne_probe(dev) == 0) {
836 dev_ne[found++] = dev;
842 if (io[this_dev] != 0)
843 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
845 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
853 static void cleanup_card(struct net_device *dev)
855 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
857 pnp_device_detach(idev);
858 free_irq(dev->irq, dev);
859 release_region(dev->base_addr, NE_IO_EXTENT);
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);