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>
61 /* Some defines that people can play with if so inclined. */
63 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
64 #define SUPPORT_NE_BAD_CLONES
66 /* Do we perform extra sanity checks on stuff ? */
67 /* #define NE_SANITY_CHECK */
69 /* Do we implement the read before write bugfix ? */
70 /* #define NE_RW_BUGFIX */
72 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
73 /* #define PACKETBUF_MEMSIZE 0x40 */
75 /* A zero-terminated list of I/O addresses to be probed at boot. */
77 static unsigned int netcard_portlist[] __initdata = {
78 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
82 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
83 { ISAPNP_CARD_ID('A','X','E',0x2011),
84 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
85 (long) "NetGear EA201" },
86 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
87 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
89 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
90 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
91 (long) "Generic PNP" },
92 { } /* terminate list */
95 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
97 #ifdef SUPPORT_NE_BAD_CLONES
98 /* A list of bad clones that we none-the-less recognize. */
99 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
100 bad_clone_list[] __initdata = {
101 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
102 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
103 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
104 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
105 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
106 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
107 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
108 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
109 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
110 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
111 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
112 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
113 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
114 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
119 /* ---- No user-serviceable parts below ---- */
121 #define NE_BASE (dev->base_addr)
123 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
124 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
125 #define NE_IO_EXTENT 0x20
127 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
128 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
129 #define NESM_START_PG 0x40 /* First page of TX buffer */
130 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
132 #ifdef CONFIG_PLAT_MAPPI
133 # define DCR_VAL 0x4b
134 #elif CONFIG_PLAT_OAKS32R
135 # define DCR_VAL 0x48
137 # define DCR_VAL 0x49
140 static int ne_probe1(struct net_device *dev, int ioaddr);
141 static int ne_probe_isapnp(struct net_device *dev);
143 static int ne_open(struct net_device *dev);
144 static int ne_close(struct net_device *dev);
146 static void ne_reset_8390(struct net_device *dev);
147 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
149 static void ne_block_input(struct net_device *dev, int count,
150 struct sk_buff *skb, int ring_offset);
151 static void ne_block_output(struct net_device *dev, const int count,
152 const unsigned char *buf, const int start_page);
155 /* Probe for various non-shared-memory ethercards.
157 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
158 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
159 the SAPROM, while other supposed NE2000 clones must be detected by their
162 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
163 mode results in doubled values, which can be detected and compensated for.
165 The probe is also responsible for initializing the card and filling
166 in the 'dev' and 'ei_status' structures.
168 We use the minimum memory size for some ethercard product lines, iff we can't
169 distinguish models. You can increase the packet buffer size by setting
170 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
171 E1010 starts at 0x100 and ends at 0x2000.
172 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
173 E2010 starts at 0x100 and ends at 0x4000.
174 E2010-x starts at 0x100 and ends at 0xffff. */
176 static int __init do_ne_probe(struct net_device *dev)
178 unsigned int base_addr = dev->base_addr;
180 int orig_irq = dev->irq;
183 SET_MODULE_OWNER(dev);
185 /* First check any supplied i/o locations. User knows best. <cough> */
186 if (base_addr > 0x1ff) /* Check a single specified location. */
187 return ne_probe1(dev, base_addr);
188 else if (base_addr != 0) /* Don't probe at all. */
191 /* Then look for any installed ISAPnP clones */
192 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
196 /* Last resort. The semi-risky ISA auto-probe. */
197 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
198 int ioaddr = netcard_portlist[base_addr];
200 if (ne_probe1(dev, ioaddr) == 0)
208 static void cleanup_card(struct net_device *dev)
210 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
212 pnp_device_detach(idev);
213 free_irq(dev->irq, dev);
214 release_region(dev->base_addr, NE_IO_EXTENT);
218 struct net_device * __init ne_probe(int unit)
220 struct net_device *dev = alloc_ei_netdev();
224 return ERR_PTR(-ENOMEM);
226 sprintf(dev->name, "eth%d", unit);
227 netdev_boot_setup_check(dev);
229 err = do_ne_probe(dev);
232 err = register_netdev(dev);
244 static int __init ne_probe_isapnp(struct net_device *dev)
248 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
249 struct pnp_dev *idev = NULL;
251 while ((idev = pnp_find_dev(NULL,
252 isapnp_clone_list[i].vendor,
253 isapnp_clone_list[i].function,
255 /* Avoid already found cards from previous calls */
256 if (pnp_device_attach(idev) < 0)
258 if (pnp_activate_dev(idev) < 0) {
259 pnp_device_detach(idev);
262 /* if no io and irq, search for next */
263 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
264 pnp_device_detach(idev);
268 dev->base_addr = pnp_port_start(idev, 0);
269 dev->irq = pnp_irq(idev, 0);
270 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
271 (char *) isapnp_clone_list[i].driver_data,
272 dev->base_addr, dev->irq);
273 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
274 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
275 pnp_device_detach(idev);
278 ei_status.priv = (unsigned long)idev;
289 static int __init ne_probe1(struct net_device *dev, int ioaddr)
292 unsigned char SA_prom[32];
294 const char *name = NULL;
295 int start_page, stop_page;
296 int neX000, ctron, copam, bad_card;
298 static unsigned version_printed;
300 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
303 reg0 = inb_p(ioaddr);
309 /* Do a preliminary verification that we have a 8390. */
312 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
313 regd = inb_p(ioaddr + 0x0d);
314 outb_p(0xff, ioaddr + 0x0d);
315 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
316 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
317 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
318 outb_p(reg0, ioaddr);
319 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
325 if (ei_debug && version_printed++ == 0)
326 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
328 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
330 /* A user with a poor card that fails to ack the reset, or that
331 does not have a valid 0x57,0x57 signature can still use this
332 without having to recompile. Specifying an i/o address along
333 with an otherwise unused dev->mem_end value of "0xBAD" will
334 cause the driver to skip these parts of the probe. */
336 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
338 /* Reset card. Who knows what dain-bramaged state it was left in. */
341 unsigned long reset_start_time = jiffies;
343 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
344 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
346 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
347 if (jiffies - reset_start_time > 2*HZ/100) {
349 printk(" (warning: no reset ack)");
352 printk(" not found (no reset ack).\n");
358 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
361 /* Read the 16 bytes of station address PROM.
362 We must first initialize registers, similar to NS8390_init(eifdev, 0).
363 We can't reliably read the SAPROM address without this.
364 (I learned the hard way!). */
366 struct {unsigned char value, offset; } program_seq[] =
368 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
369 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
370 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
372 {0x00, EN0_IMR}, /* Mask completion irq. */
374 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
375 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
378 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
380 {E8390_RREAD+E8390_START, E8390_CMD},
383 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
384 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
387 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
388 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
389 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
390 if (SA_prom[i] != SA_prom[i+1])
396 for (i = 0; i < 16; i++)
397 SA_prom[i] = SA_prom[i+i];
398 /* We must set the 8390 for word mode. */
399 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
400 start_page = NESM_START_PG;
401 stop_page = NESM_STOP_PG;
403 start_page = NE1SM_START_PG;
404 stop_page = NE1SM_STOP_PG;
407 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
408 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
409 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
411 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
413 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
414 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
416 /* Set up the rest of the parameters. */
417 if (neX000 || bad_card || copam) {
418 name = (wordlength == 2) ? "NE2000" : "NE1000";
422 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
424 stop_page = (wordlength == 2) ? 0x40 : 0x20;
428 #ifdef SUPPORT_NE_BAD_CLONES
429 /* Ack! Well, there might be a *bad* NE*000 clone there.
430 Check for total bogus addresses. */
431 for (i = 0; bad_clone_list[i].name8; i++)
433 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
434 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
435 SA_prom[2] == bad_clone_list[i].SAprefix[2])
439 name = bad_clone_list[i].name16;
441 name = bad_clone_list[i].name8;
446 if (bad_clone_list[i].name8 == NULL)
448 printk(" not found (invalid signature %2.2x %2.2x).\n",
449 SA_prom[14], SA_prom[15]);
454 printk(" not found.\n");
462 unsigned long cookie = probe_irq_on();
463 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
464 outb_p(0x00, ioaddr + EN0_RCNTLO);
465 outb_p(0x00, ioaddr + EN0_RCNTHI);
466 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
467 mdelay(10); /* wait 10ms for interrupt to propagate */
468 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
469 dev->irq = probe_irq_off(cookie);
471 printk(" autoirq is %d\n", dev->irq);
472 } else if (dev->irq == 2)
473 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
474 or don't know which one to set. */
478 printk(" failed to detect IRQ line.\n");
483 /* Snarf the interrupt now. There's no point in waiting since we cannot
484 share and the board will usually be enabled. */
485 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
487 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
491 dev->base_addr = ioaddr;
493 #ifdef CONFIG_PLAT_MAPPI
494 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
495 ioaddr + E8390_CMD); /* 0x61 */
496 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
497 dev->dev_addr[i] = SA_prom[i]
498 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
499 printk(" %2.2x", SA_prom[i]);
502 for(i = 0; i < ETHER_ADDR_LEN; i++) {
503 printk(" %2.2x", SA_prom[i]);
504 dev->dev_addr[i] = SA_prom[i];
508 printk("\n%s: %s found at %#x, using IRQ %d.\n",
509 dev->name, name, ioaddr, dev->irq);
511 ei_status.name = name;
512 ei_status.tx_start_page = start_page;
513 ei_status.stop_page = stop_page;
514 #ifdef CONFIG_PLAT_OAKS32R
515 ei_status.word16 = 0;
517 ei_status.word16 = (wordlength == 2);
520 ei_status.rx_start_page = start_page + TX_PAGES;
521 #ifdef PACKETBUF_MEMSIZE
522 /* Allow the packet buffer size to be overridden by know-it-alls. */
523 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
526 ei_status.reset_8390 = &ne_reset_8390;
527 ei_status.block_input = &ne_block_input;
528 ei_status.block_output = &ne_block_output;
529 ei_status.get_8390_hdr = &ne_get_8390_hdr;
531 dev->open = &ne_open;
532 dev->stop = &ne_close;
533 #ifdef CONFIG_NET_POLL_CONTROLLER
534 dev->poll_controller = ei_poll;
540 release_region(ioaddr, NE_IO_EXTENT);
544 static int ne_open(struct net_device *dev)
550 static int ne_close(struct net_device *dev)
553 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
558 /* Hard reset the card. This used to pause for the same period that a
559 8390 reset command required, but that shouldn't be necessary. */
561 static void ne_reset_8390(struct net_device *dev)
563 unsigned long reset_start_time = jiffies;
566 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
568 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
569 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
572 ei_status.dmaing = 0;
574 /* This check _should_not_ be necessary, omit eventually. */
575 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
576 if (jiffies - reset_start_time > 2*HZ/100) {
577 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
580 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
583 /* Grab the 8390 specific header. Similar to the block_input routine, but
584 we don't need to be concerned with ring wrap as the header will be at
585 the start of a page, so we optimize accordingly. */
587 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
589 int nic_base = dev->base_addr;
591 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
593 if (ei_status.dmaing)
595 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
596 "[DMAstat:%d][irqlock:%d].\n",
597 dev->name, ei_status.dmaing, ei_status.irqlock);
601 ei_status.dmaing |= 0x01;
602 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
603 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
604 outb_p(0, nic_base + EN0_RCNTHI);
605 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
606 outb_p(ring_page, nic_base + EN0_RSARHI);
607 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
609 if (ei_status.word16)
610 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
612 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
614 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
615 ei_status.dmaing &= ~0x01;
617 le16_to_cpus(&hdr->count);
620 /* Block input and output, similar to the Crynwr packet driver. If you
621 are porting to a new ethercard, look at the packet driver source for hints.
622 The NEx000 doesn't share the on-board packet memory -- you have to put
623 the packet out through the "remote DMA" dataport using outb. */
625 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
627 #ifdef NE_SANITY_CHECK
628 int xfer_count = count;
630 int nic_base = dev->base_addr;
631 char *buf = skb->data;
633 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
634 if (ei_status.dmaing)
636 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
637 "[DMAstat:%d][irqlock:%d].\n",
638 dev->name, ei_status.dmaing, ei_status.irqlock);
641 ei_status.dmaing |= 0x01;
642 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
643 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
644 outb_p(count >> 8, nic_base + EN0_RCNTHI);
645 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
646 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
647 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
648 if (ei_status.word16)
650 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
653 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
654 #ifdef NE_SANITY_CHECK
659 insb(NE_BASE + NE_DATAPORT, buf, count);
662 #ifdef NE_SANITY_CHECK
663 /* This was for the ALPHA version only, but enough people have
664 been encountering problems so it is still here. If you see
665 this message you either 1) have a slightly incompatible clone
666 or 2) have noise/speed problems with your bus. */
670 /* DMA termination address check... */
671 int addr, tries = 20;
673 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
674 -- it's broken for Rx on some cards! */
675 int high = inb_p(nic_base + EN0_RSARHI);
676 int low = inb_p(nic_base + EN0_RSARLO);
677 addr = (high << 8) + low;
678 if (((ring_offset + xfer_count) & 0xff) == low)
680 } while (--tries > 0);
682 printk(KERN_WARNING "%s: RX transfer address mismatch,"
683 "%#4.4x (expected) vs. %#4.4x (actual).\n",
684 dev->name, ring_offset + xfer_count, addr);
687 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
688 ei_status.dmaing &= ~0x01;
691 static void ne_block_output(struct net_device *dev, int count,
692 const unsigned char *buf, const int start_page)
694 int nic_base = NE_BASE;
695 unsigned long dma_start;
696 #ifdef NE_SANITY_CHECK
700 /* Round the count up for word writes. Do we need to do this?
701 What effect will an odd byte count have on the 8390?
702 I should check someday. */
704 if (ei_status.word16 && (count & 0x01))
707 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
708 if (ei_status.dmaing)
710 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
711 "[DMAstat:%d][irqlock:%d]\n",
712 dev->name, ei_status.dmaing, ei_status.irqlock);
715 ei_status.dmaing |= 0x01;
716 /* We should already be in page 0, but to be safe... */
717 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
719 #ifdef NE_SANITY_CHECK
723 #ifdef NE8390_RW_BUGFIX
724 /* Handle the read-before-write bug the same way as the
725 Crynwr packet driver -- the NatSemi method doesn't work.
726 Actually this doesn't always work either, but if you have
727 problems with your NEx000 this is better than nothing! */
729 outb_p(0x42, nic_base + EN0_RCNTLO);
730 outb_p(0x00, nic_base + EN0_RCNTHI);
731 outb_p(0x42, nic_base + EN0_RSARLO);
732 outb_p(0x00, nic_base + EN0_RSARHI);
733 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
734 /* Make certain that the dummy read has occurred. */
738 outb_p(ENISR_RDC, nic_base + EN0_ISR);
740 /* Now the normal output. */
741 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
742 outb_p(count >> 8, nic_base + EN0_RCNTHI);
743 outb_p(0x00, nic_base + EN0_RSARLO);
744 outb_p(start_page, nic_base + EN0_RSARHI);
746 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
747 if (ei_status.word16) {
748 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
750 outsb(NE_BASE + NE_DATAPORT, buf, count);
755 #ifdef NE_SANITY_CHECK
756 /* This was for the ALPHA version only, but enough people have
757 been encountering problems so it is still here. */
761 /* DMA termination address check... */
762 int addr, tries = 20;
764 int high = inb_p(nic_base + EN0_RSARHI);
765 int low = inb_p(nic_base + EN0_RSARLO);
766 addr = (high << 8) + low;
767 if ((start_page << 8) + count == addr)
769 } while (--tries > 0);
773 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
774 "%#4.4x (expected) vs. %#4.4x (actual).\n",
775 dev->name, (start_page << 8) + count, addr);
782 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
783 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
784 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
790 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
791 ei_status.dmaing &= ~0x01;
797 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
798 static struct net_device *dev_ne[MAX_NE_CARDS];
799 static int io[MAX_NE_CARDS];
800 static int irq[MAX_NE_CARDS];
801 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
803 module_param_array(io, int, NULL, 0);
804 module_param_array(irq, int, NULL, 0);
805 module_param_array(bad, int, NULL, 0);
806 MODULE_PARM_DESC(io, "I/O base address(es),required");
807 MODULE_PARM_DESC(irq, "IRQ number(s)");
808 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
809 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
810 MODULE_LICENSE("GPL");
812 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
813 that the ne2k probe is the last 8390 based probe to take place (as it
814 is at boot) and so the probe will get confused by any other 8390 cards.
815 ISA device autoprobes on a running machine are not recommended anyway. */
817 int init_module(void)
819 int this_dev, found = 0;
821 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
822 struct net_device *dev = alloc_ei_netdev();
825 dev->irq = irq[this_dev];
826 dev->mem_end = bad[this_dev];
827 dev->base_addr = io[this_dev];
828 if (do_ne_probe(dev) == 0) {
829 if (register_netdev(dev) == 0) {
830 dev_ne[found++] = dev;
838 if (io[this_dev] != 0)
839 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
841 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
849 void cleanup_module(void)
853 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
854 struct net_device *dev = dev_ne[this_dev];
856 unregister_netdev(dev);