[IWLWIFI]: add iwlwifi wireless drivers
[linux-2.6/verdex.git] / drivers / net / ne.c
blob27d87985bb63f3912ca333c61360253ac74a8994
1 /* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
2 /*
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.
18 Changelog:
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>
54 #include <linux/platform_device.h>
56 #include <asm/system.h>
57 #include <asm/io.h>
59 #include "8390.h"
61 #define DRV_NAME "ne"
63 /* Some defines that people can play with if so inclined. */
65 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
66 #define SUPPORT_NE_BAD_CLONES
68 /* Do we perform extra sanity checks on stuff ? */
69 /* #define NE_SANITY_CHECK */
71 /* Do we implement the read before write bugfix ? */
72 /* #define NE_RW_BUGFIX */
74 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
75 /* #define PACKETBUF_MEMSIZE 0x40 */
77 #if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
78 /* Do we need a portlist for the ISA auto-probe ? */
79 #define NEEDS_PORTLIST
80 #endif
82 /* A zero-terminated list of I/O addresses to be probed at boot. */
83 #ifdef NEEDS_PORTLIST
84 static unsigned int netcard_portlist[] __initdata = {
85 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
87 #endif
89 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
90 { ISAPNP_CARD_ID('A','X','E',0x2011),
91 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
92 (long) "NetGear EA201" },
93 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
94 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
95 (long) "NN NE2000" },
96 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
97 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
98 (long) "Generic PNP" },
99 { } /* terminate list */
102 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
104 #ifdef SUPPORT_NE_BAD_CLONES
105 /* A list of bad clones that we none-the-less recognize. */
106 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
107 bad_clone_list[] __initdata = {
108 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
109 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
110 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
111 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
112 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
113 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
114 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
115 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
116 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
117 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
118 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
119 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
120 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
121 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
122 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
123 #endif
124 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
125 {NULL,}
127 #endif
129 /* ---- No user-serviceable parts below ---- */
131 #define NE_BASE (dev->base_addr)
132 #define NE_CMD 0x00
133 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
134 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
135 #define NE_IO_EXTENT 0x20
137 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
138 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
139 #define NESM_START_PG 0x40 /* First page of TX buffer */
140 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
142 #if defined(CONFIG_PLAT_MAPPI)
143 # define DCR_VAL 0x4b
144 #elif defined(CONFIG_PLAT_OAKS32R) || \
145 defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
146 # define DCR_VAL 0x48 /* 8-bit mode */
147 #else
148 # define DCR_VAL 0x49
149 #endif
151 static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
152 static int ne_probe_isapnp(struct net_device *dev);
154 static int ne_open(struct net_device *dev);
155 static int ne_close(struct net_device *dev);
157 static void ne_reset_8390(struct net_device *dev);
158 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
159 int ring_page);
160 static void ne_block_input(struct net_device *dev, int count,
161 struct sk_buff *skb, int ring_offset);
162 static void ne_block_output(struct net_device *dev, const int count,
163 const unsigned char *buf, const int start_page);
166 /* Probe for various non-shared-memory ethercards.
168 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
169 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
170 the SAPROM, while other supposed NE2000 clones must be detected by their
171 SA prefix.
173 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
174 mode results in doubled values, which can be detected and compensated for.
176 The probe is also responsible for initializing the card and filling
177 in the 'dev' and 'ei_status' structures.
179 We use the minimum memory size for some ethercard product lines, iff we can't
180 distinguish models. You can increase the packet buffer size by setting
181 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
182 E1010 starts at 0x100 and ends at 0x2000.
183 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
184 E2010 starts at 0x100 and ends at 0x4000.
185 E2010-x starts at 0x100 and ends at 0xffff. */
187 static int __init do_ne_probe(struct net_device *dev)
189 unsigned long base_addr = dev->base_addr;
190 #ifdef NEEDS_PORTLIST
191 int orig_irq = dev->irq;
192 #endif
194 /* First check any supplied i/o locations. User knows best. <cough> */
195 if (base_addr > 0x1ff) /* Check a single specified location. */
196 return ne_probe1(dev, base_addr);
197 else if (base_addr != 0) /* Don't probe at all. */
198 return -ENXIO;
200 /* Then look for any installed ISAPnP clones */
201 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
202 return 0;
204 #ifdef NEEDS_PORTLIST
205 /* Last resort. The semi-risky ISA auto-probe. */
206 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
207 int ioaddr = netcard_portlist[base_addr];
208 dev->irq = orig_irq;
209 if (ne_probe1(dev, ioaddr) == 0)
210 return 0;
212 #endif
214 return -ENODEV;
217 #ifndef MODULE
218 struct net_device * __init ne_probe(int unit)
220 struct net_device *dev = alloc_ei_netdev();
221 int err;
223 if (!dev)
224 return ERR_PTR(-ENOMEM);
226 sprintf(dev->name, "eth%d", unit);
227 netdev_boot_setup_check(dev);
229 err = do_ne_probe(dev);
230 if (err)
231 goto out;
232 return dev;
233 out:
234 free_netdev(dev);
235 return ERR_PTR(err);
237 #endif
239 static int __init ne_probe_isapnp(struct net_device *dev)
241 int i;
243 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
244 struct pnp_dev *idev = NULL;
246 while ((idev = pnp_find_dev(NULL,
247 isapnp_clone_list[i].vendor,
248 isapnp_clone_list[i].function,
249 idev))) {
250 /* Avoid already found cards from previous calls */
251 if (pnp_device_attach(idev) < 0)
252 continue;
253 if (pnp_activate_dev(idev) < 0) {
254 pnp_device_detach(idev);
255 continue;
257 /* if no io and irq, search for next */
258 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
259 pnp_device_detach(idev);
260 continue;
262 /* found it */
263 dev->base_addr = pnp_port_start(idev, 0);
264 dev->irq = pnp_irq(idev, 0);
265 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
266 (char *) isapnp_clone_list[i].driver_data,
267 dev->base_addr, dev->irq);
268 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
269 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
270 pnp_device_detach(idev);
271 return -ENXIO;
273 ei_status.priv = (unsigned long)idev;
274 break;
276 if (!idev)
277 continue;
278 return 0;
281 return -ENODEV;
284 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
286 int i;
287 unsigned char SA_prom[32];
288 int wordlength = 2;
289 const char *name = NULL;
290 int start_page, stop_page;
291 int neX000, ctron, copam, bad_card;
292 int reg0, ret;
293 static unsigned version_printed;
295 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
296 return -EBUSY;
298 reg0 = inb_p(ioaddr);
299 if (reg0 == 0xFF) {
300 ret = -ENODEV;
301 goto err_out;
304 /* Do a preliminary verification that we have a 8390. */
306 int regd;
307 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
308 regd = inb_p(ioaddr + 0x0d);
309 outb_p(0xff, ioaddr + 0x0d);
310 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
311 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
312 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
313 outb_p(reg0, ioaddr);
314 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
315 ret = -ENODEV;
316 goto err_out;
320 if (ei_debug && version_printed++ == 0)
321 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
323 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
325 /* A user with a poor card that fails to ack the reset, or that
326 does not have a valid 0x57,0x57 signature can still use this
327 without having to recompile. Specifying an i/o address along
328 with an otherwise unused dev->mem_end value of "0xBAD" will
329 cause the driver to skip these parts of the probe. */
331 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
333 /* Reset card. Who knows what dain-bramaged state it was left in. */
336 unsigned long reset_start_time = jiffies;
338 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
339 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
341 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
342 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
343 if (bad_card) {
344 printk(" (warning: no reset ack)");
345 break;
346 } else {
347 printk(" not found (no reset ack).\n");
348 ret = -ENODEV;
349 goto err_out;
353 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
356 /* Read the 16 bytes of station address PROM.
357 We must first initialize registers, similar to NS8390_init(eifdev, 0).
358 We can't reliably read the SAPROM address without this.
359 (I learned the hard way!). */
361 struct {unsigned char value, offset; } program_seq[] =
363 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
364 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
365 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
366 {0x00, EN0_RCNTHI},
367 {0x00, EN0_IMR}, /* Mask completion irq. */
368 {0xFF, EN0_ISR},
369 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
370 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
371 {32, EN0_RCNTLO},
372 {0x00, EN0_RCNTHI},
373 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
374 {0x00, EN0_RSARHI},
375 {E8390_RREAD+E8390_START, E8390_CMD},
378 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
379 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
382 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
383 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
384 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
385 if (SA_prom[i] != SA_prom[i+1])
386 wordlength = 1;
389 if (wordlength == 2)
391 for (i = 0; i < 16; i++)
392 SA_prom[i] = SA_prom[i+i];
393 /* We must set the 8390 for word mode. */
394 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
395 start_page = NESM_START_PG;
398 * Realtek RTL8019AS datasheet says that the PSTOP register
399 * shouldn't exceed 0x60 in 8-bit mode.
400 * This chip can be identified by reading the signature from
401 * the remote byte count registers (otherwise write-only)...
403 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
404 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
405 inb(ioaddr + EN0_RCNTHI) == 0x70)
406 stop_page = 0x60;
407 else
408 stop_page = NESM_STOP_PG;
409 } else {
410 start_page = NE1SM_START_PG;
411 stop_page = NE1SM_STOP_PG;
414 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
415 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
416 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
417 #else
418 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
419 #endif
420 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
421 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
423 /* Set up the rest of the parameters. */
424 if (neX000 || bad_card || copam) {
425 name = (wordlength == 2) ? "NE2000" : "NE1000";
427 else if (ctron)
429 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
430 start_page = 0x01;
431 stop_page = (wordlength == 2) ? 0x40 : 0x20;
433 else
435 #ifdef SUPPORT_NE_BAD_CLONES
436 /* Ack! Well, there might be a *bad* NE*000 clone there.
437 Check for total bogus addresses. */
438 for (i = 0; bad_clone_list[i].name8; i++)
440 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
441 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
442 SA_prom[2] == bad_clone_list[i].SAprefix[2])
444 if (wordlength == 2)
446 name = bad_clone_list[i].name16;
447 } else {
448 name = bad_clone_list[i].name8;
450 break;
453 if (bad_clone_list[i].name8 == NULL)
455 printk(" not found (invalid signature %2.2x %2.2x).\n",
456 SA_prom[14], SA_prom[15]);
457 ret = -ENXIO;
458 goto err_out;
460 #else
461 printk(" not found.\n");
462 ret = -ENXIO;
463 goto err_out;
464 #endif
467 if (dev->irq < 2)
469 unsigned long cookie = probe_irq_on();
470 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
471 outb_p(0x00, ioaddr + EN0_RCNTLO);
472 outb_p(0x00, ioaddr + EN0_RCNTHI);
473 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
474 mdelay(10); /* wait 10ms for interrupt to propagate */
475 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
476 dev->irq = probe_irq_off(cookie);
477 if (ei_debug > 2)
478 printk(" autoirq is %d\n", dev->irq);
479 } else if (dev->irq == 2)
480 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
481 or don't know which one to set. */
482 dev->irq = 9;
484 if (! dev->irq) {
485 printk(" failed to detect IRQ line.\n");
486 ret = -EAGAIN;
487 goto err_out;
490 /* Snarf the interrupt now. There's no point in waiting since we cannot
491 share and the board will usually be enabled. */
492 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
493 if (ret) {
494 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
495 goto err_out;
498 dev->base_addr = ioaddr;
500 #ifdef CONFIG_PLAT_MAPPI
501 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
502 ioaddr + E8390_CMD); /* 0x61 */
503 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
504 dev->dev_addr[i] = SA_prom[i]
505 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
506 printk(" %2.2x", SA_prom[i]);
508 #else
509 for(i = 0; i < ETHER_ADDR_LEN; i++) {
510 printk(" %2.2x", SA_prom[i]);
511 dev->dev_addr[i] = SA_prom[i];
513 #endif
515 printk("\n");
517 ei_status.name = name;
518 ei_status.tx_start_page = start_page;
519 ei_status.stop_page = stop_page;
521 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
522 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
524 ei_status.rx_start_page = start_page + TX_PAGES;
525 #ifdef PACKETBUF_MEMSIZE
526 /* Allow the packet buffer size to be overridden by know-it-alls. */
527 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
528 #endif
530 ei_status.reset_8390 = &ne_reset_8390;
531 ei_status.block_input = &ne_block_input;
532 ei_status.block_output = &ne_block_output;
533 ei_status.get_8390_hdr = &ne_get_8390_hdr;
534 ei_status.priv = 0;
535 dev->open = &ne_open;
536 dev->stop = &ne_close;
537 #ifdef CONFIG_NET_POLL_CONTROLLER
538 dev->poll_controller = ei_poll;
539 #endif
540 NS8390_init(dev, 0);
542 ret = register_netdev(dev);
543 if (ret)
544 goto out_irq;
545 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
546 dev->name, name, ioaddr, dev->irq);
547 return 0;
549 out_irq:
550 free_irq(dev->irq, dev);
551 err_out:
552 release_region(ioaddr, NE_IO_EXTENT);
553 return ret;
556 static int ne_open(struct net_device *dev)
558 ei_open(dev);
559 return 0;
562 static int ne_close(struct net_device *dev)
564 if (ei_debug > 1)
565 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
566 ei_close(dev);
567 return 0;
570 /* Hard reset the card. This used to pause for the same period that a
571 8390 reset command required, but that shouldn't be necessary. */
573 static void ne_reset_8390(struct net_device *dev)
575 unsigned long reset_start_time = jiffies;
577 if (ei_debug > 1)
578 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
580 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
581 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
583 ei_status.txing = 0;
584 ei_status.dmaing = 0;
586 /* This check _should_not_ be necessary, omit eventually. */
587 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
588 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
589 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
590 break;
592 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
595 /* Grab the 8390 specific header. Similar to the block_input routine, but
596 we don't need to be concerned with ring wrap as the header will be at
597 the start of a page, so we optimize accordingly. */
599 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
601 int nic_base = dev->base_addr;
603 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
605 if (ei_status.dmaing)
607 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
608 "[DMAstat:%d][irqlock:%d].\n",
609 dev->name, ei_status.dmaing, ei_status.irqlock);
610 return;
613 ei_status.dmaing |= 0x01;
614 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
615 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
616 outb_p(0, nic_base + EN0_RCNTHI);
617 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
618 outb_p(ring_page, nic_base + EN0_RSARHI);
619 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
621 if (ei_status.word16)
622 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
623 else
624 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
626 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
627 ei_status.dmaing &= ~0x01;
629 le16_to_cpus(&hdr->count);
632 /* Block input and output, similar to the Crynwr packet driver. If you
633 are porting to a new ethercard, look at the packet driver source for hints.
634 The NEx000 doesn't share the on-board packet memory -- you have to put
635 the packet out through the "remote DMA" dataport using outb. */
637 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
639 #ifdef NE_SANITY_CHECK
640 int xfer_count = count;
641 #endif
642 int nic_base = dev->base_addr;
643 char *buf = skb->data;
645 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
646 if (ei_status.dmaing)
648 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
649 "[DMAstat:%d][irqlock:%d].\n",
650 dev->name, ei_status.dmaing, ei_status.irqlock);
651 return;
653 ei_status.dmaing |= 0x01;
654 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
655 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
656 outb_p(count >> 8, nic_base + EN0_RCNTHI);
657 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
658 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
659 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
660 if (ei_status.word16)
662 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
663 if (count & 0x01)
665 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
666 #ifdef NE_SANITY_CHECK
667 xfer_count++;
668 #endif
670 } else {
671 insb(NE_BASE + NE_DATAPORT, buf, count);
674 #ifdef NE_SANITY_CHECK
675 /* This was for the ALPHA version only, but enough people have
676 been encountering problems so it is still here. If you see
677 this message you either 1) have a slightly incompatible clone
678 or 2) have noise/speed problems with your bus. */
680 if (ei_debug > 1)
682 /* DMA termination address check... */
683 int addr, tries = 20;
684 do {
685 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
686 -- it's broken for Rx on some cards! */
687 int high = inb_p(nic_base + EN0_RSARHI);
688 int low = inb_p(nic_base + EN0_RSARLO);
689 addr = (high << 8) + low;
690 if (((ring_offset + xfer_count) & 0xff) == low)
691 break;
692 } while (--tries > 0);
693 if (tries <= 0)
694 printk(KERN_WARNING "%s: RX transfer address mismatch,"
695 "%#4.4x (expected) vs. %#4.4x (actual).\n",
696 dev->name, ring_offset + xfer_count, addr);
698 #endif
699 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
700 ei_status.dmaing &= ~0x01;
703 static void ne_block_output(struct net_device *dev, int count,
704 const unsigned char *buf, const int start_page)
706 int nic_base = NE_BASE;
707 unsigned long dma_start;
708 #ifdef NE_SANITY_CHECK
709 int retries = 0;
710 #endif
712 /* Round the count up for word writes. Do we need to do this?
713 What effect will an odd byte count have on the 8390?
714 I should check someday. */
716 if (ei_status.word16 && (count & 0x01))
717 count++;
719 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
720 if (ei_status.dmaing)
722 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
723 "[DMAstat:%d][irqlock:%d]\n",
724 dev->name, ei_status.dmaing, ei_status.irqlock);
725 return;
727 ei_status.dmaing |= 0x01;
728 /* We should already be in page 0, but to be safe... */
729 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
731 #ifdef NE_SANITY_CHECK
732 retry:
733 #endif
735 #ifdef NE8390_RW_BUGFIX
736 /* Handle the read-before-write bug the same way as the
737 Crynwr packet driver -- the NatSemi method doesn't work.
738 Actually this doesn't always work either, but if you have
739 problems with your NEx000 this is better than nothing! */
741 outb_p(0x42, nic_base + EN0_RCNTLO);
742 outb_p(0x00, nic_base + EN0_RCNTHI);
743 outb_p(0x42, nic_base + EN0_RSARLO);
744 outb_p(0x00, nic_base + EN0_RSARHI);
745 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
746 /* Make certain that the dummy read has occurred. */
747 udelay(6);
748 #endif
750 outb_p(ENISR_RDC, nic_base + EN0_ISR);
752 /* Now the normal output. */
753 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
754 outb_p(count >> 8, nic_base + EN0_RCNTHI);
755 outb_p(0x00, nic_base + EN0_RSARLO);
756 outb_p(start_page, nic_base + EN0_RSARHI);
758 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
759 if (ei_status.word16) {
760 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
761 } else {
762 outsb(NE_BASE + NE_DATAPORT, buf, count);
765 dma_start = jiffies;
767 #ifdef NE_SANITY_CHECK
768 /* This was for the ALPHA version only, but enough people have
769 been encountering problems so it is still here. */
771 if (ei_debug > 1)
773 /* DMA termination address check... */
774 int addr, tries = 20;
775 do {
776 int high = inb_p(nic_base + EN0_RSARHI);
777 int low = inb_p(nic_base + EN0_RSARLO);
778 addr = (high << 8) + low;
779 if ((start_page << 8) + count == addr)
780 break;
781 } while (--tries > 0);
783 if (tries <= 0)
785 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
786 "%#4.4x (expected) vs. %#4.4x (actual).\n",
787 dev->name, (start_page << 8) + count, addr);
788 if (retries++ == 0)
789 goto retry;
792 #endif
794 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
795 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
796 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
797 ne_reset_8390(dev);
798 NS8390_init(dev,1);
799 break;
802 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
803 ei_status.dmaing &= ~0x01;
804 return;
807 static int __init ne_drv_probe(struct platform_device *pdev)
809 struct net_device *dev;
810 struct resource *res;
811 int err, irq;
813 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
814 irq = platform_get_irq(pdev, 0);
815 if (!res || irq < 0)
816 return -ENODEV;
818 dev = alloc_ei_netdev();
819 if (!dev)
820 return -ENOMEM;
821 dev->irq = irq;
822 dev->base_addr = res->start;
823 err = do_ne_probe(dev);
824 if (err) {
825 free_netdev(dev);
826 return err;
828 platform_set_drvdata(pdev, dev);
829 return 0;
832 static int __exit ne_drv_remove(struct platform_device *pdev)
834 struct net_device *dev = platform_get_drvdata(pdev);
836 unregister_netdev(dev);
837 free_irq(dev->irq, dev);
838 release_region(dev->base_addr, NE_IO_EXTENT);
839 free_netdev(dev);
840 return 0;
843 #ifdef CONFIG_PM
844 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
846 struct net_device *dev = platform_get_drvdata(pdev);
848 if (netif_running(dev))
849 netif_device_detach(dev);
850 return 0;
853 static int ne_drv_resume(struct platform_device *pdev)
855 struct net_device *dev = platform_get_drvdata(pdev);
857 if (netif_running(dev)) {
858 ne_reset_8390(dev);
859 NS8390_init(dev, 1);
860 netif_device_attach(dev);
862 return 0;
864 #else
865 #define ne_drv_suspend NULL
866 #define ne_drv_resume NULL
867 #endif
869 static struct platform_driver ne_driver = {
870 .remove = __exit_p(ne_drv_remove),
871 .suspend = ne_drv_suspend,
872 .resume = ne_drv_resume,
873 .driver = {
874 .name = DRV_NAME,
875 .owner = THIS_MODULE,
879 static int __init ne_init(void)
881 return platform_driver_probe(&ne_driver, ne_drv_probe);
884 static void __exit ne_exit(void)
886 platform_driver_unregister(&ne_driver);
889 #ifdef MODULE
890 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
891 static struct net_device *dev_ne[MAX_NE_CARDS];
892 static int io[MAX_NE_CARDS];
893 static int irq[MAX_NE_CARDS];
894 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
896 module_param_array(io, int, NULL, 0);
897 module_param_array(irq, int, NULL, 0);
898 module_param_array(bad, int, NULL, 0);
899 MODULE_PARM_DESC(io, "I/O base address(es),required");
900 MODULE_PARM_DESC(irq, "IRQ number(s)");
901 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
902 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
903 MODULE_LICENSE("GPL");
905 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
906 that the ne2k probe is the last 8390 based probe to take place (as it
907 is at boot) and so the probe will get confused by any other 8390 cards.
908 ISA device autoprobes on a running machine are not recommended anyway. */
910 int __init init_module(void)
912 int this_dev, found = 0;
913 int plat_found = !ne_init();
915 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
916 struct net_device *dev = alloc_ei_netdev();
917 if (!dev)
918 break;
919 dev->irq = irq[this_dev];
920 dev->mem_end = bad[this_dev];
921 dev->base_addr = io[this_dev];
922 if (do_ne_probe(dev) == 0) {
923 dev_ne[found++] = dev;
924 continue;
926 free_netdev(dev);
927 if (found || plat_found)
928 break;
929 if (io[this_dev] != 0)
930 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
931 else
932 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
933 return -ENXIO;
935 if (found || plat_found)
936 return 0;
937 return -ENODEV;
940 static void cleanup_card(struct net_device *dev)
942 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
943 if (idev)
944 pnp_device_detach(idev);
945 free_irq(dev->irq, dev);
946 release_region(dev->base_addr, NE_IO_EXTENT);
949 void __exit cleanup_module(void)
951 int this_dev;
953 ne_exit();
954 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
955 struct net_device *dev = dev_ne[this_dev];
956 if (dev) {
957 unregister_netdev(dev);
958 cleanup_card(dev);
959 free_netdev(dev);
963 #else /* MODULE */
964 module_init(ne_init);
965 module_exit(ne_exit);
966 #endif /* MODULE */