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>
54 #include <linux/platform_device.h>
56 #include <asm/system.h>
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
82 /* A zero-terminated list of I/O addresses to be probed at boot. */
84 static unsigned int netcard_portlist[] __initdata = {
85 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
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),
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 */
124 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
129 /* ---- No user-serviceable parts below ---- */
131 #define NE_BASE (dev->base_addr)
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 */
148 # define DCR_VAL 0x49
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,
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
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;
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. */
200 /* Then look for any installed ISAPnP clones */
201 if (isapnp_present() && (ne_probe_isapnp(dev) == 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];
209 if (ne_probe1(dev, ioaddr) == 0)
218 struct net_device * __init ne_probe(int unit)
220 struct net_device *dev = alloc_eip_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);
239 static int __init ne_probe_isapnp(struct net_device *dev)
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,
250 /* Avoid already found cards from previous calls */
251 if (pnp_device_attach(idev) < 0)
253 if (pnp_activate_dev(idev) < 0) {
254 pnp_device_detach(idev);
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);
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);
273 ei_status.priv = (unsigned long)idev;
284 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
287 unsigned char SA_prom[32];
289 const char *name = NULL;
290 int start_page, stop_page;
291 int neX000, ctron, copam, bad_card;
293 static unsigned version_printed;
294 DECLARE_MAC_BUF(mac);
296 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
299 reg0 = inb_p(ioaddr);
305 /* Do a preliminary verification that we have a 8390. */
308 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
309 regd = inb_p(ioaddr + 0x0d);
310 outb_p(0xff, ioaddr + 0x0d);
311 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
312 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
313 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
314 outb_p(reg0, ioaddr);
315 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
321 if (ei_debug && version_printed++ == 0)
322 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
324 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
326 /* A user with a poor card that fails to ack the reset, or that
327 does not have a valid 0x57,0x57 signature can still use this
328 without having to recompile. Specifying an i/o address along
329 with an otherwise unused dev->mem_end value of "0xBAD" will
330 cause the driver to skip these parts of the probe. */
332 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
334 /* Reset card. Who knows what dain-bramaged state it was left in. */
337 unsigned long reset_start_time = jiffies;
339 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
340 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
342 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
343 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
345 printk(" (warning: no reset ack)");
348 printk(" not found (no reset ack).\n");
354 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
357 /* Read the 16 bytes of station address PROM.
358 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
359 We can't reliably read the SAPROM address without this.
360 (I learned the hard way!). */
362 struct {unsigned char value, offset; } program_seq[] =
364 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
365 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
366 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
368 {0x00, EN0_IMR}, /* Mask completion irq. */
370 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
371 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
374 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
376 {E8390_RREAD+E8390_START, E8390_CMD},
379 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
380 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
383 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
384 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
385 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
386 if (SA_prom[i] != SA_prom[i+1])
392 for (i = 0; i < 16; i++)
393 SA_prom[i] = SA_prom[i+i];
394 /* We must set the 8390 for word mode. */
395 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
396 start_page = NESM_START_PG;
399 * Realtek RTL8019AS datasheet says that the PSTOP register
400 * shouldn't exceed 0x60 in 8-bit mode.
401 * This chip can be identified by reading the signature from
402 * the remote byte count registers (otherwise write-only)...
404 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
405 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
406 inb(ioaddr + EN0_RCNTHI) == 0x70)
409 stop_page = NESM_STOP_PG;
411 start_page = NE1SM_START_PG;
412 stop_page = NE1SM_STOP_PG;
415 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
416 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
417 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
419 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
421 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
422 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
424 /* Set up the rest of the parameters. */
425 if (neX000 || bad_card || copam) {
426 name = (wordlength == 2) ? "NE2000" : "NE1000";
430 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
432 stop_page = (wordlength == 2) ? 0x40 : 0x20;
436 #ifdef SUPPORT_NE_BAD_CLONES
437 /* Ack! Well, there might be a *bad* NE*000 clone there.
438 Check for total bogus addresses. */
439 for (i = 0; bad_clone_list[i].name8; i++)
441 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
442 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
443 SA_prom[2] == bad_clone_list[i].SAprefix[2])
447 name = bad_clone_list[i].name16;
449 name = bad_clone_list[i].name8;
454 if (bad_clone_list[i].name8 == NULL)
456 printk(" not found (invalid signature %2.2x %2.2x).\n",
457 SA_prom[14], SA_prom[15]);
462 printk(" not found.\n");
470 unsigned long cookie = probe_irq_on();
471 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
472 outb_p(0x00, ioaddr + EN0_RCNTLO);
473 outb_p(0x00, ioaddr + EN0_RCNTHI);
474 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
475 mdelay(10); /* wait 10ms for interrupt to propagate */
476 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
477 dev->irq = probe_irq_off(cookie);
479 printk(" autoirq is %d\n", dev->irq);
480 } else if (dev->irq == 2)
481 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
482 or don't know which one to set. */
486 printk(" failed to detect IRQ line.\n");
491 /* Snarf the interrupt now. There's no point in waiting since we cannot
492 share and the board will usually be enabled. */
493 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
495 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
499 dev->base_addr = ioaddr;
501 #ifdef CONFIG_PLAT_MAPPI
502 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
503 ioaddr + E8390_CMD); /* 0x61 */
504 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
505 dev->dev_addr[i] = SA_prom[i]
506 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
509 for(i = 0; i < ETHER_ADDR_LEN; i++) {
510 dev->dev_addr[i] = SA_prom[i];
514 printk("%s\n", print_mac(mac, dev->dev_addr));
516 ei_status.name = name;
517 ei_status.tx_start_page = start_page;
518 ei_status.stop_page = stop_page;
520 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
521 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
523 ei_status.rx_start_page = start_page + TX_PAGES;
524 #ifdef PACKETBUF_MEMSIZE
525 /* Allow the packet buffer size to be overridden by know-it-alls. */
526 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
529 ei_status.reset_8390 = &ne_reset_8390;
530 ei_status.block_input = &ne_block_input;
531 ei_status.block_output = &ne_block_output;
532 ei_status.get_8390_hdr = &ne_get_8390_hdr;
534 dev->open = &ne_open;
535 dev->stop = &ne_close;
536 #ifdef CONFIG_NET_POLL_CONTROLLER
537 dev->poll_controller = eip_poll;
541 ret = register_netdev(dev);
544 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
545 dev->name, name, ioaddr, dev->irq);
549 free_irq(dev->irq, dev);
551 release_region(ioaddr, NE_IO_EXTENT);
555 static int ne_open(struct net_device *dev)
561 static int ne_close(struct net_device *dev)
564 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
569 /* Hard reset the card. This used to pause for the same period that a
570 8390 reset command required, but that shouldn't be necessary. */
572 static void ne_reset_8390(struct net_device *dev)
574 unsigned long reset_start_time = jiffies;
577 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
579 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
580 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
583 ei_status.dmaing = 0;
585 /* This check _should_not_ be necessary, omit eventually. */
586 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
587 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
588 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
591 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
594 /* Grab the 8390 specific header. Similar to the block_input routine, but
595 we don't need to be concerned with ring wrap as the header will be at
596 the start of a page, so we optimize accordingly. */
598 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
600 int nic_base = dev->base_addr;
602 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
604 if (ei_status.dmaing)
606 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
607 "[DMAstat:%d][irqlock:%d].\n",
608 dev->name, ei_status.dmaing, ei_status.irqlock);
612 ei_status.dmaing |= 0x01;
613 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
614 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
615 outb_p(0, nic_base + EN0_RCNTHI);
616 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
617 outb_p(ring_page, nic_base + EN0_RSARHI);
618 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
620 if (ei_status.word16)
621 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
623 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
625 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
626 ei_status.dmaing &= ~0x01;
628 le16_to_cpus(&hdr->count);
631 /* Block input and output, similar to the Crynwr packet driver. If you
632 are porting to a new ethercard, look at the packet driver source for hints.
633 The NEx000 doesn't share the on-board packet memory -- you have to put
634 the packet out through the "remote DMA" dataport using outb. */
636 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
638 #ifdef NE_SANITY_CHECK
639 int xfer_count = count;
641 int nic_base = dev->base_addr;
642 char *buf = skb->data;
644 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
645 if (ei_status.dmaing)
647 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
648 "[DMAstat:%d][irqlock:%d].\n",
649 dev->name, ei_status.dmaing, ei_status.irqlock);
652 ei_status.dmaing |= 0x01;
653 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
654 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
655 outb_p(count >> 8, nic_base + EN0_RCNTHI);
656 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
657 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
658 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
659 if (ei_status.word16)
661 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
664 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
665 #ifdef NE_SANITY_CHECK
670 insb(NE_BASE + NE_DATAPORT, buf, count);
673 #ifdef NE_SANITY_CHECK
674 /* This was for the ALPHA version only, but enough people have
675 been encountering problems so it is still here. If you see
676 this message you either 1) have a slightly incompatible clone
677 or 2) have noise/speed problems with your bus. */
681 /* DMA termination address check... */
682 int addr, tries = 20;
684 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
685 -- it's broken for Rx on some cards! */
686 int high = inb_p(nic_base + EN0_RSARHI);
687 int low = inb_p(nic_base + EN0_RSARLO);
688 addr = (high << 8) + low;
689 if (((ring_offset + xfer_count) & 0xff) == low)
691 } while (--tries > 0);
693 printk(KERN_WARNING "%s: RX transfer address mismatch,"
694 "%#4.4x (expected) vs. %#4.4x (actual).\n",
695 dev->name, ring_offset + xfer_count, addr);
698 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
699 ei_status.dmaing &= ~0x01;
702 static void ne_block_output(struct net_device *dev, int count,
703 const unsigned char *buf, const int start_page)
705 int nic_base = NE_BASE;
706 unsigned long dma_start;
707 #ifdef NE_SANITY_CHECK
711 /* Round the count up for word writes. Do we need to do this?
712 What effect will an odd byte count have on the 8390?
713 I should check someday. */
715 if (ei_status.word16 && (count & 0x01))
718 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
719 if (ei_status.dmaing)
721 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
722 "[DMAstat:%d][irqlock:%d]\n",
723 dev->name, ei_status.dmaing, ei_status.irqlock);
726 ei_status.dmaing |= 0x01;
727 /* We should already be in page 0, but to be safe... */
728 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
730 #ifdef NE_SANITY_CHECK
734 #ifdef NE8390_RW_BUGFIX
735 /* Handle the read-before-write bug the same way as the
736 Crynwr packet driver -- the NatSemi method doesn't work.
737 Actually this doesn't always work either, but if you have
738 problems with your NEx000 this is better than nothing! */
740 outb_p(0x42, nic_base + EN0_RCNTLO);
741 outb_p(0x00, nic_base + EN0_RCNTHI);
742 outb_p(0x42, nic_base + EN0_RSARLO);
743 outb_p(0x00, nic_base + EN0_RSARHI);
744 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
745 /* Make certain that the dummy read has occurred. */
749 outb_p(ENISR_RDC, nic_base + EN0_ISR);
751 /* Now the normal output. */
752 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
753 outb_p(count >> 8, nic_base + EN0_RCNTHI);
754 outb_p(0x00, nic_base + EN0_RSARLO);
755 outb_p(start_page, nic_base + EN0_RSARHI);
757 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
758 if (ei_status.word16) {
759 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
761 outsb(NE_BASE + NE_DATAPORT, buf, count);
766 #ifdef NE_SANITY_CHECK
767 /* This was for the ALPHA version only, but enough people have
768 been encountering problems so it is still here. */
772 /* DMA termination address check... */
773 int addr, tries = 20;
775 int high = inb_p(nic_base + EN0_RSARHI);
776 int low = inb_p(nic_base + EN0_RSARLO);
777 addr = (high << 8) + low;
778 if ((start_page << 8) + count == addr)
780 } while (--tries > 0);
784 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
785 "%#4.4x (expected) vs. %#4.4x (actual).\n",
786 dev->name, (start_page << 8) + count, addr);
793 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
794 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
795 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
801 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
802 ei_status.dmaing &= ~0x01;
806 static int __init ne_drv_probe(struct platform_device *pdev)
808 struct net_device *dev;
809 struct resource *res;
812 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
813 irq = platform_get_irq(pdev, 0);
817 dev = alloc_eip_netdev();
821 dev->base_addr = res->start;
822 err = do_ne_probe(dev);
827 platform_set_drvdata(pdev, dev);
831 static int __exit ne_drv_remove(struct platform_device *pdev)
833 struct net_device *dev = platform_get_drvdata(pdev);
835 unregister_netdev(dev);
836 free_irq(dev->irq, dev);
837 release_region(dev->base_addr, NE_IO_EXTENT);
843 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
845 struct net_device *dev = platform_get_drvdata(pdev);
847 if (netif_running(dev))
848 netif_device_detach(dev);
852 static int ne_drv_resume(struct platform_device *pdev)
854 struct net_device *dev = platform_get_drvdata(pdev);
856 if (netif_running(dev)) {
859 netif_device_attach(dev);
864 #define ne_drv_suspend NULL
865 #define ne_drv_resume NULL
868 static struct platform_driver ne_driver = {
869 .remove = __exit_p(ne_drv_remove),
870 .suspend = ne_drv_suspend,
871 .resume = ne_drv_resume,
874 .owner = THIS_MODULE,
878 static int __init ne_init(void)
880 return platform_driver_probe(&ne_driver, ne_drv_probe);
883 static void __exit ne_exit(void)
885 platform_driver_unregister(&ne_driver);
889 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
890 static struct net_device *dev_ne[MAX_NE_CARDS];
891 static int io[MAX_NE_CARDS];
892 static int irq[MAX_NE_CARDS];
893 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
895 module_param_array(io, int, NULL, 0);
896 module_param_array(irq, int, NULL, 0);
897 module_param_array(bad, int, NULL, 0);
898 MODULE_PARM_DESC(io, "I/O base address(es),required");
899 MODULE_PARM_DESC(irq, "IRQ number(s)");
900 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
901 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
902 MODULE_LICENSE("GPL");
904 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
905 that the ne2k probe is the last 8390 based probe to take place (as it
906 is at boot) and so the probe will get confused by any other 8390 cards.
907 ISA device autoprobes on a running machine are not recommended anyway. */
909 int __init init_module(void)
911 int this_dev, found = 0;
912 int plat_found = !ne_init();
914 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
915 struct net_device *dev = alloc_eip_netdev();
918 dev->irq = irq[this_dev];
919 dev->mem_end = bad[this_dev];
920 dev->base_addr = io[this_dev];
921 if (do_ne_probe(dev) == 0) {
922 dev_ne[found++] = dev;
926 if (found || plat_found)
928 if (io[this_dev] != 0)
929 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
931 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
934 if (found || plat_found)
939 static void cleanup_card(struct net_device *dev)
941 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
943 pnp_device_detach(idev);
944 free_irq(dev->irq, dev);
945 release_region(dev->base_addr, NE_IO_EXTENT);
948 void __exit cleanup_module(void)
953 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
954 struct net_device *dev = dev_ne[this_dev];
956 unregister_netdev(dev);
963 module_init(ne_init);
964 module_exit(ne_exit);