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>
59 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
60 #include <asm/tx4938/rbtx4938.h>
67 /* Some defines that people can play with if so inclined. */
69 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
70 #define SUPPORT_NE_BAD_CLONES
72 /* Do we perform extra sanity checks on stuff ? */
73 /* #define NE_SANITY_CHECK */
75 /* Do we implement the read before write bugfix ? */
76 /* #define NE_RW_BUGFIX */
78 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
79 /* #define PACKETBUF_MEMSIZE 0x40 */
81 /* A zero-terminated list of I/O addresses to be probed at boot. */
83 static unsigned int netcard_portlist[] __initdata = {
84 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
88 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
89 { ISAPNP_CARD_ID('A','X','E',0x2011),
90 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
91 (long) "NetGear EA201" },
92 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
93 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
95 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
96 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
97 (long) "Generic PNP" },
98 { } /* terminate list */
101 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
103 #ifdef SUPPORT_NE_BAD_CLONES
104 /* A list of bad clones that we none-the-less recognize. */
105 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
106 bad_clone_list[] __initdata = {
107 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
108 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
109 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
110 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
111 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
112 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
113 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
114 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
115 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
116 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
117 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
118 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
119 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
120 #if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
121 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
123 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
128 /* ---- No user-serviceable parts below ---- */
130 #define NE_BASE (dev->base_addr)
132 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
133 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
134 #define NE_IO_EXTENT 0x20
136 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
137 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
138 #define NESM_START_PG 0x40 /* First page of TX buffer */
139 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
141 #if defined(CONFIG_PLAT_MAPPI)
142 # define DCR_VAL 0x4b
143 #elif defined(CONFIG_PLAT_OAKS32R) || \
144 defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
145 # define DCR_VAL 0x48 /* 8-bit mode */
147 # define DCR_VAL 0x49
150 static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
151 static int ne_probe_isapnp(struct net_device *dev);
153 static int ne_open(struct net_device *dev);
154 static int ne_close(struct net_device *dev);
156 static void ne_reset_8390(struct net_device *dev);
157 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
159 static void ne_block_input(struct net_device *dev, int count,
160 struct sk_buff *skb, int ring_offset);
161 static void ne_block_output(struct net_device *dev, const int count,
162 const unsigned char *buf, const int start_page);
165 /* Probe for various non-shared-memory ethercards.
167 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
168 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
169 the SAPROM, while other supposed NE2000 clones must be detected by their
172 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
173 mode results in doubled values, which can be detected and compensated for.
175 The probe is also responsible for initializing the card and filling
176 in the 'dev' and 'ei_status' structures.
178 We use the minimum memory size for some ethercard product lines, iff we can't
179 distinguish models. You can increase the packet buffer size by setting
180 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
181 E1010 starts at 0x100 and ends at 0x2000.
182 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
183 E2010 starts at 0x100 and ends at 0x4000.
184 E2010-x starts at 0x100 and ends at 0xffff. */
186 static int __init do_ne_probe(struct net_device *dev)
188 unsigned long base_addr = dev->base_addr;
190 int orig_irq = dev->irq;
193 SET_MODULE_OWNER(dev);
195 /* First check any supplied i/o locations. User knows best. <cough> */
196 if (base_addr > 0x1ff) /* Check a single specified location. */
197 return ne_probe1(dev, base_addr);
198 else if (base_addr != 0) /* Don't probe at all. */
201 /* Then look for any installed ISAPnP clones */
202 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
206 /* Last resort. The semi-risky ISA auto-probe. */
207 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
208 int ioaddr = netcard_portlist[base_addr];
210 if (ne_probe1(dev, ioaddr) == 0)
219 struct net_device * __init ne_probe(int unit)
221 struct net_device *dev = alloc_ei_netdev();
225 return ERR_PTR(-ENOMEM);
227 sprintf(dev->name, "eth%d", unit);
228 netdev_boot_setup_check(dev);
230 #ifdef CONFIG_TOSHIBA_RBTX4938
231 dev->base_addr = RBTX4938_RTL_8019_BASE;
232 dev->irq = RBTX4938_RTL_8019_IRQ;
234 err = do_ne_probe(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, unsigned long 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 %#3lx:", 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 (time_after(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;
403 * Realtek RTL8019AS datasheet says that the PSTOP register
404 * shouldn't exceed 0x60 in 8-bit mode.
405 * This chip can be identified by reading the signature from
406 * the remote byte count registers (otherwise write-only)...
408 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
409 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
410 inb(ioaddr + EN0_RCNTHI) == 0x70)
413 stop_page = NESM_STOP_PG;
415 start_page = NE1SM_START_PG;
416 stop_page = NE1SM_STOP_PG;
419 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
420 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
421 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
423 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
425 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
426 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
428 /* Set up the rest of the parameters. */
429 if (neX000 || bad_card || copam) {
430 name = (wordlength == 2) ? "NE2000" : "NE1000";
434 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
436 stop_page = (wordlength == 2) ? 0x40 : 0x20;
440 #ifdef SUPPORT_NE_BAD_CLONES
441 /* Ack! Well, there might be a *bad* NE*000 clone there.
442 Check for total bogus addresses. */
443 for (i = 0; bad_clone_list[i].name8; i++)
445 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
446 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
447 SA_prom[2] == bad_clone_list[i].SAprefix[2])
451 name = bad_clone_list[i].name16;
453 name = bad_clone_list[i].name8;
458 if (bad_clone_list[i].name8 == NULL)
460 printk(" not found (invalid signature %2.2x %2.2x).\n",
461 SA_prom[14], SA_prom[15]);
466 printk(" not found.\n");
474 unsigned long cookie = probe_irq_on();
475 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
476 outb_p(0x00, ioaddr + EN0_RCNTLO);
477 outb_p(0x00, ioaddr + EN0_RCNTHI);
478 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
479 mdelay(10); /* wait 10ms for interrupt to propagate */
480 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
481 dev->irq = probe_irq_off(cookie);
483 printk(" autoirq is %d\n", dev->irq);
484 } else if (dev->irq == 2)
485 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
486 or don't know which one to set. */
490 printk(" failed to detect IRQ line.\n");
495 /* Snarf the interrupt now. There's no point in waiting since we cannot
496 share and the board will usually be enabled. */
497 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
499 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
503 dev->base_addr = ioaddr;
505 #ifdef CONFIG_PLAT_MAPPI
506 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
507 ioaddr + E8390_CMD); /* 0x61 */
508 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
509 dev->dev_addr[i] = SA_prom[i]
510 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
511 printk(" %2.2x", SA_prom[i]);
514 for(i = 0; i < ETHER_ADDR_LEN; i++) {
515 printk(" %2.2x", SA_prom[i]);
516 dev->dev_addr[i] = SA_prom[i];
522 ei_status.name = name;
523 ei_status.tx_start_page = start_page;
524 ei_status.stop_page = stop_page;
526 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
527 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
529 ei_status.rx_start_page = start_page + TX_PAGES;
530 #ifdef PACKETBUF_MEMSIZE
531 /* Allow the packet buffer size to be overridden by know-it-alls. */
532 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
535 ei_status.reset_8390 = &ne_reset_8390;
536 ei_status.block_input = &ne_block_input;
537 ei_status.block_output = &ne_block_output;
538 ei_status.get_8390_hdr = &ne_get_8390_hdr;
540 dev->open = &ne_open;
541 dev->stop = &ne_close;
542 #ifdef CONFIG_NET_POLL_CONTROLLER
543 dev->poll_controller = ei_poll;
547 ret = register_netdev(dev);
550 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
551 dev->name, name, ioaddr, dev->irq);
555 free_irq(dev->irq, dev);
557 release_region(ioaddr, NE_IO_EXTENT);
561 static int ne_open(struct net_device *dev)
567 static int ne_close(struct net_device *dev)
570 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
575 /* Hard reset the card. This used to pause for the same period that a
576 8390 reset command required, but that shouldn't be necessary. */
578 static void ne_reset_8390(struct net_device *dev)
580 unsigned long reset_start_time = jiffies;
583 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
585 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
586 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
589 ei_status.dmaing = 0;
591 /* This check _should_not_ be necessary, omit eventually. */
592 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
593 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
594 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
597 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
600 /* Grab the 8390 specific header. Similar to the block_input routine, but
601 we don't need to be concerned with ring wrap as the header will be at
602 the start of a page, so we optimize accordingly. */
604 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
606 int nic_base = dev->base_addr;
608 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
610 if (ei_status.dmaing)
612 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
613 "[DMAstat:%d][irqlock:%d].\n",
614 dev->name, ei_status.dmaing, ei_status.irqlock);
618 ei_status.dmaing |= 0x01;
619 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
620 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
621 outb_p(0, nic_base + EN0_RCNTHI);
622 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
623 outb_p(ring_page, nic_base + EN0_RSARHI);
624 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
626 if (ei_status.word16)
627 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
629 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
631 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
632 ei_status.dmaing &= ~0x01;
634 le16_to_cpus(&hdr->count);
637 /* Block input and output, similar to the Crynwr packet driver. If you
638 are porting to a new ethercard, look at the packet driver source for hints.
639 The NEx000 doesn't share the on-board packet memory -- you have to put
640 the packet out through the "remote DMA" dataport using outb. */
642 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
644 #ifdef NE_SANITY_CHECK
645 int xfer_count = count;
647 int nic_base = dev->base_addr;
648 char *buf = skb->data;
650 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
651 if (ei_status.dmaing)
653 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
654 "[DMAstat:%d][irqlock:%d].\n",
655 dev->name, ei_status.dmaing, ei_status.irqlock);
658 ei_status.dmaing |= 0x01;
659 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
660 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
661 outb_p(count >> 8, nic_base + EN0_RCNTHI);
662 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
663 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
664 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
665 if (ei_status.word16)
667 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
670 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
671 #ifdef NE_SANITY_CHECK
676 insb(NE_BASE + NE_DATAPORT, buf, count);
679 #ifdef NE_SANITY_CHECK
680 /* This was for the ALPHA version only, but enough people have
681 been encountering problems so it is still here. If you see
682 this message you either 1) have a slightly incompatible clone
683 or 2) have noise/speed problems with your bus. */
687 /* DMA termination address check... */
688 int addr, tries = 20;
690 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
691 -- it's broken for Rx on some cards! */
692 int high = inb_p(nic_base + EN0_RSARHI);
693 int low = inb_p(nic_base + EN0_RSARLO);
694 addr = (high << 8) + low;
695 if (((ring_offset + xfer_count) & 0xff) == low)
697 } while (--tries > 0);
699 printk(KERN_WARNING "%s: RX transfer address mismatch,"
700 "%#4.4x (expected) vs. %#4.4x (actual).\n",
701 dev->name, ring_offset + xfer_count, addr);
704 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
705 ei_status.dmaing &= ~0x01;
708 static void ne_block_output(struct net_device *dev, int count,
709 const unsigned char *buf, const int start_page)
711 int nic_base = NE_BASE;
712 unsigned long dma_start;
713 #ifdef NE_SANITY_CHECK
717 /* Round the count up for word writes. Do we need to do this?
718 What effect will an odd byte count have on the 8390?
719 I should check someday. */
721 if (ei_status.word16 && (count & 0x01))
724 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
725 if (ei_status.dmaing)
727 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
728 "[DMAstat:%d][irqlock:%d]\n",
729 dev->name, ei_status.dmaing, ei_status.irqlock);
732 ei_status.dmaing |= 0x01;
733 /* We should already be in page 0, but to be safe... */
734 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
736 #ifdef NE_SANITY_CHECK
740 #ifdef NE8390_RW_BUGFIX
741 /* Handle the read-before-write bug the same way as the
742 Crynwr packet driver -- the NatSemi method doesn't work.
743 Actually this doesn't always work either, but if you have
744 problems with your NEx000 this is better than nothing! */
746 outb_p(0x42, nic_base + EN0_RCNTLO);
747 outb_p(0x00, nic_base + EN0_RCNTHI);
748 outb_p(0x42, nic_base + EN0_RSARLO);
749 outb_p(0x00, nic_base + EN0_RSARHI);
750 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
751 /* Make certain that the dummy read has occurred. */
755 outb_p(ENISR_RDC, nic_base + EN0_ISR);
757 /* Now the normal output. */
758 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
759 outb_p(count >> 8, nic_base + EN0_RCNTHI);
760 outb_p(0x00, nic_base + EN0_RSARLO);
761 outb_p(start_page, nic_base + EN0_RSARHI);
763 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
764 if (ei_status.word16) {
765 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
767 outsb(NE_BASE + NE_DATAPORT, buf, count);
772 #ifdef NE_SANITY_CHECK
773 /* This was for the ALPHA version only, but enough people have
774 been encountering problems so it is still here. */
778 /* DMA termination address check... */
779 int addr, tries = 20;
781 int high = inb_p(nic_base + EN0_RSARHI);
782 int low = inb_p(nic_base + EN0_RSARLO);
783 addr = (high << 8) + low;
784 if ((start_page << 8) + count == addr)
786 } while (--tries > 0);
790 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
791 "%#4.4x (expected) vs. %#4.4x (actual).\n",
792 dev->name, (start_page << 8) + count, addr);
799 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
800 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
801 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
807 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
808 ei_status.dmaing &= ~0x01;
812 static int __init ne_drv_probe(struct platform_device *pdev)
814 struct net_device *dev;
815 struct resource *res;
818 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
819 irq = platform_get_irq(pdev, 0);
823 dev = alloc_ei_netdev();
827 dev->base_addr = res->start;
828 err = do_ne_probe(dev);
833 platform_set_drvdata(pdev, dev);
837 static int __exit ne_drv_remove(struct platform_device *pdev)
839 struct net_device *dev = platform_get_drvdata(pdev);
841 unregister_netdev(dev);
842 free_irq(dev->irq, dev);
843 release_region(dev->base_addr, NE_IO_EXTENT);
849 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
851 struct net_device *dev = platform_get_drvdata(pdev);
853 if (netif_running(dev))
854 netif_device_detach(dev);
858 static int ne_drv_resume(struct platform_device *pdev)
860 struct net_device *dev = platform_get_drvdata(pdev);
862 if (netif_running(dev)) {
865 netif_device_attach(dev);
870 #define ne_drv_suspend NULL
871 #define ne_drv_resume NULL
874 static struct platform_driver ne_driver = {
875 .remove = __exit_p(ne_drv_remove),
876 .suspend = ne_drv_suspend,
877 .resume = ne_drv_resume,
880 .owner = THIS_MODULE,
884 static int __init ne_init(void)
886 return platform_driver_probe(&ne_driver, ne_drv_probe);
889 static void __exit ne_exit(void)
891 platform_driver_unregister(&ne_driver);
895 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
896 static struct net_device *dev_ne[MAX_NE_CARDS];
897 static int io[MAX_NE_CARDS];
898 static int irq[MAX_NE_CARDS];
899 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
901 module_param_array(io, int, NULL, 0);
902 module_param_array(irq, int, NULL, 0);
903 module_param_array(bad, int, NULL, 0);
904 MODULE_PARM_DESC(io, "I/O base address(es),required");
905 MODULE_PARM_DESC(irq, "IRQ number(s)");
906 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
907 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
908 MODULE_LICENSE("GPL");
910 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
911 that the ne2k probe is the last 8390 based probe to take place (as it
912 is at boot) and so the probe will get confused by any other 8390 cards.
913 ISA device autoprobes on a running machine are not recommended anyway. */
915 int __init init_module(void)
917 int this_dev, found = 0;
918 int plat_found = !ne_init();
920 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
921 struct net_device *dev = alloc_ei_netdev();
924 dev->irq = irq[this_dev];
925 dev->mem_end = bad[this_dev];
926 dev->base_addr = io[this_dev];
927 if (do_ne_probe(dev) == 0) {
928 dev_ne[found++] = dev;
932 if (found || plat_found)
934 if (io[this_dev] != 0)
935 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
937 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
940 if (found || plat_found)
945 static void cleanup_card(struct net_device *dev)
947 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
949 pnp_device_detach(idev);
950 free_irq(dev->irq, dev);
951 release_region(dev->base_addr, NE_IO_EXTENT);
954 void __exit cleanup_module(void)
959 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
960 struct net_device *dev = dev_ne[this_dev];
962 unregister_netdev(dev);
969 module_init(ne_init);
970 module_exit(ne_exit);