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>
53 #include <linux/jiffies.h>
55 #include <asm/system.h>
58 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
59 #include <asm/tx4938/rbtx4938.h>
66 /* Some defines that people can play with if so inclined. */
68 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
69 #define SUPPORT_NE_BAD_CLONES
71 /* Do we perform extra sanity checks on stuff ? */
72 /* #define NE_SANITY_CHECK */
74 /* Do we implement the read before write bugfix ? */
75 /* #define NE_RW_BUGFIX */
77 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
78 /* #define PACKETBUF_MEMSIZE 0x40 */
80 /* A zero-terminated list of I/O addresses to be probed at boot. */
82 static unsigned int netcard_portlist[] __initdata = {
83 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
87 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
88 { ISAPNP_CARD_ID('A','X','E',0x2011),
89 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
90 (long) "NetGear EA201" },
91 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
92 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
94 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
95 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
96 (long) "Generic PNP" },
97 { } /* terminate list */
100 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
102 #ifdef SUPPORT_NE_BAD_CLONES
103 /* A list of bad clones that we none-the-less recognize. */
104 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
105 bad_clone_list[] __initdata = {
106 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
107 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
108 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
109 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
110 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
111 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
112 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
113 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
114 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
115 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
116 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
117 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
118 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
119 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
120 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
122 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
127 /* ---- No user-serviceable parts below ---- */
129 #define NE_BASE (dev->base_addr)
131 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
132 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
133 #define NE_IO_EXTENT 0x20
135 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
136 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
137 #define NESM_START_PG 0x40 /* First page of TX buffer */
138 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
140 #if defined(CONFIG_PLAT_MAPPI)
141 # define DCR_VAL 0x4b
142 #elif defined(CONFIG_PLAT_OAKS32R)
143 # define DCR_VAL 0x48
145 # define DCR_VAL 0x49
148 static int ne_probe1(struct net_device *dev, int ioaddr);
149 static int ne_probe_isapnp(struct net_device *dev);
151 static int ne_open(struct net_device *dev);
152 static int ne_close(struct net_device *dev);
154 static void ne_reset_8390(struct net_device *dev);
155 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
157 static void ne_block_input(struct net_device *dev, int count,
158 struct sk_buff *skb, int ring_offset);
159 static void ne_block_output(struct net_device *dev, const int count,
160 const unsigned char *buf, const int start_page);
163 /* Probe for various non-shared-memory ethercards.
165 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
166 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
167 the SAPROM, while other supposed NE2000 clones must be detected by their
170 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
171 mode results in doubled values, which can be detected and compensated for.
173 The probe is also responsible for initializing the card and filling
174 in the 'dev' and 'ei_status' structures.
176 We use the minimum memory size for some ethercard product lines, iff we can't
177 distinguish models. You can increase the packet buffer size by setting
178 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
179 E1010 starts at 0x100 and ends at 0x2000.
180 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
181 E2010 starts at 0x100 and ends at 0x4000.
182 E2010-x starts at 0x100 and ends at 0xffff. */
184 static int __init do_ne_probe(struct net_device *dev)
186 unsigned int base_addr = dev->base_addr;
188 int orig_irq = dev->irq;
191 SET_MODULE_OWNER(dev);
193 /* First check any supplied i/o locations. User knows best. <cough> */
194 if (base_addr > 0x1ff) /* Check a single specified location. */
195 return ne_probe1(dev, base_addr);
196 else if (base_addr != 0) /* Don't probe at all. */
199 /* Then look for any installed ISAPnP clones */
200 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
204 /* Last resort. The semi-risky ISA auto-probe. */
205 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
206 int ioaddr = netcard_portlist[base_addr];
208 if (ne_probe1(dev, ioaddr) == 0)
217 struct net_device * __init ne_probe(int unit)
219 struct net_device *dev = alloc_ei_netdev();
223 return ERR_PTR(-ENOMEM);
225 sprintf(dev->name, "eth%d", unit);
226 netdev_boot_setup_check(dev);
228 #ifdef CONFIG_TOSHIBA_RBTX4938
229 dev->base_addr = RBTX4938_RTL_8019_BASE;
230 dev->irq = RBTX4938_RTL_8019_IRQ;
232 err = do_ne_probe(dev);
242 static int __init ne_probe_isapnp(struct net_device *dev)
246 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
247 struct pnp_dev *idev = NULL;
249 while ((idev = pnp_find_dev(NULL,
250 isapnp_clone_list[i].vendor,
251 isapnp_clone_list[i].function,
253 /* Avoid already found cards from previous calls */
254 if (pnp_device_attach(idev) < 0)
256 if (pnp_activate_dev(idev) < 0) {
257 pnp_device_detach(idev);
260 /* if no io and irq, search for next */
261 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
262 pnp_device_detach(idev);
266 dev->base_addr = pnp_port_start(idev, 0);
267 dev->irq = pnp_irq(idev, 0);
268 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
269 (char *) isapnp_clone_list[i].driver_data,
270 dev->base_addr, dev->irq);
271 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
272 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
273 pnp_device_detach(idev);
276 ei_status.priv = (unsigned long)idev;
287 static int __init ne_probe1(struct net_device *dev, int ioaddr)
290 unsigned char SA_prom[32];
292 const char *name = NULL;
293 int start_page, stop_page;
294 int neX000, ctron, copam, bad_card;
296 static unsigned version_printed;
298 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
301 reg0 = inb_p(ioaddr);
307 /* Do a preliminary verification that we have a 8390. */
310 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
311 regd = inb_p(ioaddr + 0x0d);
312 outb_p(0xff, ioaddr + 0x0d);
313 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
314 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
315 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
316 outb_p(reg0, ioaddr);
317 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
323 if (ei_debug && version_printed++ == 0)
324 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
326 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
328 /* A user with a poor card that fails to ack the reset, or that
329 does not have a valid 0x57,0x57 signature can still use this
330 without having to recompile. Specifying an i/o address along
331 with an otherwise unused dev->mem_end value of "0xBAD" will
332 cause the driver to skip these parts of the probe. */
334 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
336 /* Reset card. Who knows what dain-bramaged state it was left in. */
339 unsigned long reset_start_time = jiffies;
341 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
342 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
344 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
345 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
347 printk(" (warning: no reset ack)");
350 printk(" not found (no reset ack).\n");
356 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
359 /* Read the 16 bytes of station address PROM.
360 We must first initialize registers, similar to NS8390_init(eifdev, 0).
361 We can't reliably read the SAPROM address without this.
362 (I learned the hard way!). */
364 struct {unsigned char value, offset; } program_seq[] =
366 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
367 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
368 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
370 {0x00, EN0_IMR}, /* Mask completion irq. */
372 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
373 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
376 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
378 {E8390_RREAD+E8390_START, E8390_CMD},
381 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
382 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
385 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
386 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
387 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
388 if (SA_prom[i] != SA_prom[i+1])
394 for (i = 0; i < 16; i++)
395 SA_prom[i] = SA_prom[i+i];
396 /* We must set the 8390 for word mode. */
397 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
398 start_page = NESM_START_PG;
399 stop_page = NESM_STOP_PG;
401 start_page = NE1SM_START_PG;
402 stop_page = NE1SM_STOP_PG;
405 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
406 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
407 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
409 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
411 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
412 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
414 /* Set up the rest of the parameters. */
415 if (neX000 || bad_card || copam) {
416 name = (wordlength == 2) ? "NE2000" : "NE1000";
420 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
422 stop_page = (wordlength == 2) ? 0x40 : 0x20;
426 #ifdef SUPPORT_NE_BAD_CLONES
427 /* Ack! Well, there might be a *bad* NE*000 clone there.
428 Check for total bogus addresses. */
429 for (i = 0; bad_clone_list[i].name8; i++)
431 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
432 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
433 SA_prom[2] == bad_clone_list[i].SAprefix[2])
437 name = bad_clone_list[i].name16;
439 name = bad_clone_list[i].name8;
444 if (bad_clone_list[i].name8 == NULL)
446 printk(" not found (invalid signature %2.2x %2.2x).\n",
447 SA_prom[14], SA_prom[15]);
452 printk(" not found.\n");
460 unsigned long cookie = probe_irq_on();
461 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
462 outb_p(0x00, ioaddr + EN0_RCNTLO);
463 outb_p(0x00, ioaddr + EN0_RCNTHI);
464 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
465 mdelay(10); /* wait 10ms for interrupt to propagate */
466 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
467 dev->irq = probe_irq_off(cookie);
469 printk(" autoirq is %d\n", dev->irq);
470 } else if (dev->irq == 2)
471 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
472 or don't know which one to set. */
476 printk(" failed to detect IRQ line.\n");
481 /* Snarf the interrupt now. There's no point in waiting since we cannot
482 share and the board will usually be enabled. */
483 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
485 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
489 dev->base_addr = ioaddr;
491 #ifdef CONFIG_PLAT_MAPPI
492 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
493 ioaddr + E8390_CMD); /* 0x61 */
494 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
495 dev->dev_addr[i] = SA_prom[i]
496 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
497 printk(" %2.2x", SA_prom[i]);
500 for(i = 0; i < ETHER_ADDR_LEN; i++) {
501 printk(" %2.2x", SA_prom[i]);
502 dev->dev_addr[i] = SA_prom[i];
506 printk("\n%s: %s found at %#x, using IRQ %d.\n",
507 dev->name, name, ioaddr, dev->irq);
509 ei_status.name = name;
510 ei_status.tx_start_page = start_page;
511 ei_status.stop_page = stop_page;
512 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
516 #ifdef CONFIG_PLAT_OAKS32R
517 ei_status.word16 = 0;
519 ei_status.word16 = (wordlength == 2);
522 ei_status.rx_start_page = start_page + TX_PAGES;
523 #ifdef PACKETBUF_MEMSIZE
524 /* Allow the packet buffer size to be overridden by know-it-alls. */
525 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
528 ei_status.reset_8390 = &ne_reset_8390;
529 ei_status.block_input = &ne_block_input;
530 ei_status.block_output = &ne_block_output;
531 ei_status.get_8390_hdr = &ne_get_8390_hdr;
533 dev->open = &ne_open;
534 dev->stop = &ne_close;
535 #ifdef CONFIG_NET_POLL_CONTROLLER
536 dev->poll_controller = ei_poll;
540 ret = register_netdev(dev);
546 free_irq(dev->irq, dev);
548 release_region(ioaddr, NE_IO_EXTENT);
552 static int ne_open(struct net_device *dev)
558 static int ne_close(struct net_device *dev)
561 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
566 /* Hard reset the card. This used to pause for the same period that a
567 8390 reset command required, but that shouldn't be necessary. */
569 static void ne_reset_8390(struct net_device *dev)
571 unsigned long reset_start_time = jiffies;
574 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
576 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
577 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
580 ei_status.dmaing = 0;
582 /* This check _should_not_ be necessary, omit eventually. */
583 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
584 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
585 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
588 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
591 /* Grab the 8390 specific header. Similar to the block_input routine, but
592 we don't need to be concerned with ring wrap as the header will be at
593 the start of a page, so we optimize accordingly. */
595 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
597 int nic_base = dev->base_addr;
599 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
601 if (ei_status.dmaing)
603 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
604 "[DMAstat:%d][irqlock:%d].\n",
605 dev->name, ei_status.dmaing, ei_status.irqlock);
609 ei_status.dmaing |= 0x01;
610 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
611 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
612 outb_p(0, nic_base + EN0_RCNTHI);
613 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
614 outb_p(ring_page, nic_base + EN0_RSARHI);
615 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
617 if (ei_status.word16)
618 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
620 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
622 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
623 ei_status.dmaing &= ~0x01;
625 le16_to_cpus(&hdr->count);
628 /* Block input and output, similar to the Crynwr packet driver. If you
629 are porting to a new ethercard, look at the packet driver source for hints.
630 The NEx000 doesn't share the on-board packet memory -- you have to put
631 the packet out through the "remote DMA" dataport using outb. */
633 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
635 #ifdef NE_SANITY_CHECK
636 int xfer_count = count;
638 int nic_base = dev->base_addr;
639 char *buf = skb->data;
641 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
642 if (ei_status.dmaing)
644 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
645 "[DMAstat:%d][irqlock:%d].\n",
646 dev->name, ei_status.dmaing, ei_status.irqlock);
649 ei_status.dmaing |= 0x01;
650 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
651 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
652 outb_p(count >> 8, nic_base + EN0_RCNTHI);
653 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
654 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
655 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
656 if (ei_status.word16)
658 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
661 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
662 #ifdef NE_SANITY_CHECK
667 insb(NE_BASE + NE_DATAPORT, buf, count);
670 #ifdef NE_SANITY_CHECK
671 /* This was for the ALPHA version only, but enough people have
672 been encountering problems so it is still here. If you see
673 this message you either 1) have a slightly incompatible clone
674 or 2) have noise/speed problems with your bus. */
678 /* DMA termination address check... */
679 int addr, tries = 20;
681 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
682 -- it's broken for Rx on some cards! */
683 int high = inb_p(nic_base + EN0_RSARHI);
684 int low = inb_p(nic_base + EN0_RSARLO);
685 addr = (high << 8) + low;
686 if (((ring_offset + xfer_count) & 0xff) == low)
688 } while (--tries > 0);
690 printk(KERN_WARNING "%s: RX transfer address mismatch,"
691 "%#4.4x (expected) vs. %#4.4x (actual).\n",
692 dev->name, ring_offset + xfer_count, addr);
695 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
696 ei_status.dmaing &= ~0x01;
699 static void ne_block_output(struct net_device *dev, int count,
700 const unsigned char *buf, const int start_page)
702 int nic_base = NE_BASE;
703 unsigned long dma_start;
704 #ifdef NE_SANITY_CHECK
708 /* Round the count up for word writes. Do we need to do this?
709 What effect will an odd byte count have on the 8390?
710 I should check someday. */
712 if (ei_status.word16 && (count & 0x01))
715 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
716 if (ei_status.dmaing)
718 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
719 "[DMAstat:%d][irqlock:%d]\n",
720 dev->name, ei_status.dmaing, ei_status.irqlock);
723 ei_status.dmaing |= 0x01;
724 /* We should already be in page 0, but to be safe... */
725 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
727 #ifdef NE_SANITY_CHECK
731 #ifdef NE8390_RW_BUGFIX
732 /* Handle the read-before-write bug the same way as the
733 Crynwr packet driver -- the NatSemi method doesn't work.
734 Actually this doesn't always work either, but if you have
735 problems with your NEx000 this is better than nothing! */
737 outb_p(0x42, nic_base + EN0_RCNTLO);
738 outb_p(0x00, nic_base + EN0_RCNTHI);
739 outb_p(0x42, nic_base + EN0_RSARLO);
740 outb_p(0x00, nic_base + EN0_RSARHI);
741 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
742 /* Make certain that the dummy read has occurred. */
746 outb_p(ENISR_RDC, nic_base + EN0_ISR);
748 /* Now the normal output. */
749 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
750 outb_p(count >> 8, nic_base + EN0_RCNTHI);
751 outb_p(0x00, nic_base + EN0_RSARLO);
752 outb_p(start_page, nic_base + EN0_RSARHI);
754 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
755 if (ei_status.word16) {
756 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
758 outsb(NE_BASE + NE_DATAPORT, buf, count);
763 #ifdef NE_SANITY_CHECK
764 /* This was for the ALPHA version only, but enough people have
765 been encountering problems so it is still here. */
769 /* DMA termination address check... */
770 int addr, tries = 20;
772 int high = inb_p(nic_base + EN0_RSARHI);
773 int low = inb_p(nic_base + EN0_RSARLO);
774 addr = (high << 8) + low;
775 if ((start_page << 8) + count == addr)
777 } while (--tries > 0);
781 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
782 "%#4.4x (expected) vs. %#4.4x (actual).\n",
783 dev->name, (start_page << 8) + count, addr);
790 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
791 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
792 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
798 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
799 ei_status.dmaing &= ~0x01;
805 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
806 static struct net_device *dev_ne[MAX_NE_CARDS];
807 static int io[MAX_NE_CARDS];
808 static int irq[MAX_NE_CARDS];
809 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
811 module_param_array(io, int, NULL, 0);
812 module_param_array(irq, int, NULL, 0);
813 module_param_array(bad, int, NULL, 0);
814 MODULE_PARM_DESC(io, "I/O base address(es),required");
815 MODULE_PARM_DESC(irq, "IRQ number(s)");
816 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
817 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
818 MODULE_LICENSE("GPL");
820 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
821 that the ne2k probe is the last 8390 based probe to take place (as it
822 is at boot) and so the probe will get confused by any other 8390 cards.
823 ISA device autoprobes on a running machine are not recommended anyway. */
825 int init_module(void)
827 int this_dev, found = 0;
829 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
830 struct net_device *dev = alloc_ei_netdev();
833 dev->irq = irq[this_dev];
834 dev->mem_end = bad[this_dev];
835 dev->base_addr = io[this_dev];
836 if (do_ne_probe(dev) == 0) {
837 dev_ne[found++] = dev;
843 if (io[this_dev] != 0)
844 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
846 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
854 static void cleanup_card(struct net_device *dev)
856 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
858 pnp_device_detach(idev);
859 free_irq(dev->irq, dev);
860 release_region(dev->base_addr, NE_IO_EXTENT);
863 void cleanup_module(void)
867 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
868 struct net_device *dev = dev_ne[this_dev];
870 unregister_netdev(dev);