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 SET_MODULE_OWNER(dev);
196 /* First check any supplied i/o locations. User knows best. <cough> */
197 if (base_addr > 0x1ff) /* Check a single specified location. */
198 return ne_probe1(dev, base_addr);
199 else if (base_addr != 0) /* Don't probe at all. */
202 /* Then look for any installed ISAPnP clones */
203 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
206 #ifdef NEEDS_PORTLIST
207 /* Last resort. The semi-risky ISA auto-probe. */
208 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
209 int ioaddr = netcard_portlist[base_addr];
211 if (ne_probe1(dev, ioaddr) == 0)
220 struct net_device * __init ne_probe(int unit)
222 struct net_device *dev = alloc_ei_netdev();
226 return ERR_PTR(-ENOMEM);
228 sprintf(dev->name, "eth%d", unit);
229 netdev_boot_setup_check(dev);
231 err = do_ne_probe(dev);
241 static int __init ne_probe_isapnp(struct net_device *dev)
245 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
246 struct pnp_dev *idev = NULL;
248 while ((idev = pnp_find_dev(NULL,
249 isapnp_clone_list[i].vendor,
250 isapnp_clone_list[i].function,
252 /* Avoid already found cards from previous calls */
253 if (pnp_device_attach(idev) < 0)
255 if (pnp_activate_dev(idev) < 0) {
256 pnp_device_detach(idev);
259 /* if no io and irq, search for next */
260 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
261 pnp_device_detach(idev);
265 dev->base_addr = pnp_port_start(idev, 0);
266 dev->irq = pnp_irq(idev, 0);
267 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
268 (char *) isapnp_clone_list[i].driver_data,
269 dev->base_addr, dev->irq);
270 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
271 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
272 pnp_device_detach(idev);
275 ei_status.priv = (unsigned long)idev;
286 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
289 unsigned char SA_prom[32];
291 const char *name = NULL;
292 int start_page, stop_page;
293 int neX000, ctron, copam, bad_card;
295 static unsigned version_printed;
297 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
300 reg0 = inb_p(ioaddr);
306 /* Do a preliminary verification that we have a 8390. */
309 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
310 regd = inb_p(ioaddr + 0x0d);
311 outb_p(0xff, ioaddr + 0x0d);
312 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
313 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
314 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
315 outb_p(reg0, ioaddr);
316 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
322 if (ei_debug && version_printed++ == 0)
323 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
325 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
327 /* A user with a poor card that fails to ack the reset, or that
328 does not have a valid 0x57,0x57 signature can still use this
329 without having to recompile. Specifying an i/o address along
330 with an otherwise unused dev->mem_end value of "0xBAD" will
331 cause the driver to skip these parts of the probe. */
333 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
335 /* Reset card. Who knows what dain-bramaged state it was left in. */
338 unsigned long reset_start_time = jiffies;
340 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
341 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
343 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
344 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
346 printk(" (warning: no reset ack)");
349 printk(" not found (no reset ack).\n");
355 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
358 /* Read the 16 bytes of station address PROM.
359 We must first initialize registers, similar to NS8390_init(eifdev, 0).
360 We can't reliably read the SAPROM address without this.
361 (I learned the hard way!). */
363 struct {unsigned char value, offset; } program_seq[] =
365 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
366 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
367 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
369 {0x00, EN0_IMR}, /* Mask completion irq. */
371 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
372 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
375 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
377 {E8390_RREAD+E8390_START, E8390_CMD},
380 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
381 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
384 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
385 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
386 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
387 if (SA_prom[i] != SA_prom[i+1])
393 for (i = 0; i < 16; i++)
394 SA_prom[i] = SA_prom[i+i];
395 /* We must set the 8390 for word mode. */
396 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
397 start_page = NESM_START_PG;
400 * Realtek RTL8019AS datasheet says that the PSTOP register
401 * shouldn't exceed 0x60 in 8-bit mode.
402 * This chip can be identified by reading the signature from
403 * the remote byte count registers (otherwise write-only)...
405 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
406 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
407 inb(ioaddr + EN0_RCNTHI) == 0x70)
410 stop_page = NESM_STOP_PG;
412 start_page = NE1SM_START_PG;
413 stop_page = NE1SM_STOP_PG;
416 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
417 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
418 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
420 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
422 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
423 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
425 /* Set up the rest of the parameters. */
426 if (neX000 || bad_card || copam) {
427 name = (wordlength == 2) ? "NE2000" : "NE1000";
431 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
433 stop_page = (wordlength == 2) ? 0x40 : 0x20;
437 #ifdef SUPPORT_NE_BAD_CLONES
438 /* Ack! Well, there might be a *bad* NE*000 clone there.
439 Check for total bogus addresses. */
440 for (i = 0; bad_clone_list[i].name8; i++)
442 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
443 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
444 SA_prom[2] == bad_clone_list[i].SAprefix[2])
448 name = bad_clone_list[i].name16;
450 name = bad_clone_list[i].name8;
455 if (bad_clone_list[i].name8 == NULL)
457 printk(" not found (invalid signature %2.2x %2.2x).\n",
458 SA_prom[14], SA_prom[15]);
463 printk(" not found.\n");
471 unsigned long cookie = probe_irq_on();
472 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
473 outb_p(0x00, ioaddr + EN0_RCNTLO);
474 outb_p(0x00, ioaddr + EN0_RCNTHI);
475 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
476 mdelay(10); /* wait 10ms for interrupt to propagate */
477 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
478 dev->irq = probe_irq_off(cookie);
480 printk(" autoirq is %d\n", dev->irq);
481 } else if (dev->irq == 2)
482 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
483 or don't know which one to set. */
487 printk(" failed to detect IRQ line.\n");
492 /* Snarf the interrupt now. There's no point in waiting since we cannot
493 share and the board will usually be enabled. */
494 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
496 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
500 dev->base_addr = ioaddr;
502 #ifdef CONFIG_PLAT_MAPPI
503 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
504 ioaddr + E8390_CMD); /* 0x61 */
505 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
506 dev->dev_addr[i] = SA_prom[i]
507 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
508 printk(" %2.2x", SA_prom[i]);
511 for(i = 0; i < ETHER_ADDR_LEN; i++) {
512 printk(" %2.2x", SA_prom[i]);
513 dev->dev_addr[i] = SA_prom[i];
519 ei_status.name = name;
520 ei_status.tx_start_page = start_page;
521 ei_status.stop_page = stop_page;
523 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
524 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
526 ei_status.rx_start_page = start_page + TX_PAGES;
527 #ifdef PACKETBUF_MEMSIZE
528 /* Allow the packet buffer size to be overridden by know-it-alls. */
529 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
532 ei_status.reset_8390 = &ne_reset_8390;
533 ei_status.block_input = &ne_block_input;
534 ei_status.block_output = &ne_block_output;
535 ei_status.get_8390_hdr = &ne_get_8390_hdr;
537 dev->open = &ne_open;
538 dev->stop = &ne_close;
539 #ifdef CONFIG_NET_POLL_CONTROLLER
540 dev->poll_controller = ei_poll;
544 ret = register_netdev(dev);
547 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
548 dev->name, name, ioaddr, dev->irq);
552 free_irq(dev->irq, dev);
554 release_region(ioaddr, NE_IO_EXTENT);
558 static int ne_open(struct net_device *dev)
564 static int ne_close(struct net_device *dev)
567 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
572 /* Hard reset the card. This used to pause for the same period that a
573 8390 reset command required, but that shouldn't be necessary. */
575 static void ne_reset_8390(struct net_device *dev)
577 unsigned long reset_start_time = jiffies;
580 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
582 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
583 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
586 ei_status.dmaing = 0;
588 /* This check _should_not_ be necessary, omit eventually. */
589 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
590 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
591 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
594 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
597 /* Grab the 8390 specific header. Similar to the block_input routine, but
598 we don't need to be concerned with ring wrap as the header will be at
599 the start of a page, so we optimize accordingly. */
601 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
603 int nic_base = dev->base_addr;
605 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
607 if (ei_status.dmaing)
609 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
610 "[DMAstat:%d][irqlock:%d].\n",
611 dev->name, ei_status.dmaing, ei_status.irqlock);
615 ei_status.dmaing |= 0x01;
616 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
617 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
618 outb_p(0, nic_base + EN0_RCNTHI);
619 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
620 outb_p(ring_page, nic_base + EN0_RSARHI);
621 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
623 if (ei_status.word16)
624 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
626 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
628 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
629 ei_status.dmaing &= ~0x01;
631 le16_to_cpus(&hdr->count);
634 /* Block input and output, similar to the Crynwr packet driver. If you
635 are porting to a new ethercard, look at the packet driver source for hints.
636 The NEx000 doesn't share the on-board packet memory -- you have to put
637 the packet out through the "remote DMA" dataport using outb. */
639 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
641 #ifdef NE_SANITY_CHECK
642 int xfer_count = count;
644 int nic_base = dev->base_addr;
645 char *buf = skb->data;
647 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
648 if (ei_status.dmaing)
650 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
651 "[DMAstat:%d][irqlock:%d].\n",
652 dev->name, ei_status.dmaing, ei_status.irqlock);
655 ei_status.dmaing |= 0x01;
656 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
657 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
658 outb_p(count >> 8, nic_base + EN0_RCNTHI);
659 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
660 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
661 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
662 if (ei_status.word16)
664 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
667 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
668 #ifdef NE_SANITY_CHECK
673 insb(NE_BASE + NE_DATAPORT, buf, count);
676 #ifdef NE_SANITY_CHECK
677 /* This was for the ALPHA version only, but enough people have
678 been encountering problems so it is still here. If you see
679 this message you either 1) have a slightly incompatible clone
680 or 2) have noise/speed problems with your bus. */
684 /* DMA termination address check... */
685 int addr, tries = 20;
687 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
688 -- it's broken for Rx on some cards! */
689 int high = inb_p(nic_base + EN0_RSARHI);
690 int low = inb_p(nic_base + EN0_RSARLO);
691 addr = (high << 8) + low;
692 if (((ring_offset + xfer_count) & 0xff) == low)
694 } while (--tries > 0);
696 printk(KERN_WARNING "%s: RX transfer address mismatch,"
697 "%#4.4x (expected) vs. %#4.4x (actual).\n",
698 dev->name, ring_offset + xfer_count, addr);
701 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
702 ei_status.dmaing &= ~0x01;
705 static void ne_block_output(struct net_device *dev, int count,
706 const unsigned char *buf, const int start_page)
708 int nic_base = NE_BASE;
709 unsigned long dma_start;
710 #ifdef NE_SANITY_CHECK
714 /* Round the count up for word writes. Do we need to do this?
715 What effect will an odd byte count have on the 8390?
716 I should check someday. */
718 if (ei_status.word16 && (count & 0x01))
721 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
722 if (ei_status.dmaing)
724 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
725 "[DMAstat:%d][irqlock:%d]\n",
726 dev->name, ei_status.dmaing, ei_status.irqlock);
729 ei_status.dmaing |= 0x01;
730 /* We should already be in page 0, but to be safe... */
731 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
733 #ifdef NE_SANITY_CHECK
737 #ifdef NE8390_RW_BUGFIX
738 /* Handle the read-before-write bug the same way as the
739 Crynwr packet driver -- the NatSemi method doesn't work.
740 Actually this doesn't always work either, but if you have
741 problems with your NEx000 this is better than nothing! */
743 outb_p(0x42, nic_base + EN0_RCNTLO);
744 outb_p(0x00, nic_base + EN0_RCNTHI);
745 outb_p(0x42, nic_base + EN0_RSARLO);
746 outb_p(0x00, nic_base + EN0_RSARHI);
747 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
748 /* Make certain that the dummy read has occurred. */
752 outb_p(ENISR_RDC, nic_base + EN0_ISR);
754 /* Now the normal output. */
755 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
756 outb_p(count >> 8, nic_base + EN0_RCNTHI);
757 outb_p(0x00, nic_base + EN0_RSARLO);
758 outb_p(start_page, nic_base + EN0_RSARHI);
760 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
761 if (ei_status.word16) {
762 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
764 outsb(NE_BASE + NE_DATAPORT, buf, count);
769 #ifdef NE_SANITY_CHECK
770 /* This was for the ALPHA version only, but enough people have
771 been encountering problems so it is still here. */
775 /* DMA termination address check... */
776 int addr, tries = 20;
778 int high = inb_p(nic_base + EN0_RSARHI);
779 int low = inb_p(nic_base + EN0_RSARLO);
780 addr = (high << 8) + low;
781 if ((start_page << 8) + count == addr)
783 } while (--tries > 0);
787 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
788 "%#4.4x (expected) vs. %#4.4x (actual).\n",
789 dev->name, (start_page << 8) + count, addr);
796 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
797 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
798 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
804 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
805 ei_status.dmaing &= ~0x01;
809 static int __init ne_drv_probe(struct platform_device *pdev)
811 struct net_device *dev;
812 struct resource *res;
815 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
816 irq = platform_get_irq(pdev, 0);
820 dev = alloc_ei_netdev();
824 dev->base_addr = res->start;
825 err = do_ne_probe(dev);
830 platform_set_drvdata(pdev, dev);
834 static int __exit ne_drv_remove(struct platform_device *pdev)
836 struct net_device *dev = platform_get_drvdata(pdev);
838 unregister_netdev(dev);
839 free_irq(dev->irq, dev);
840 release_region(dev->base_addr, NE_IO_EXTENT);
846 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
848 struct net_device *dev = platform_get_drvdata(pdev);
850 if (netif_running(dev))
851 netif_device_detach(dev);
855 static int ne_drv_resume(struct platform_device *pdev)
857 struct net_device *dev = platform_get_drvdata(pdev);
859 if (netif_running(dev)) {
862 netif_device_attach(dev);
867 #define ne_drv_suspend NULL
868 #define ne_drv_resume NULL
871 static struct platform_driver ne_driver = {
872 .remove = __exit_p(ne_drv_remove),
873 .suspend = ne_drv_suspend,
874 .resume = ne_drv_resume,
877 .owner = THIS_MODULE,
881 static int __init ne_init(void)
883 return platform_driver_probe(&ne_driver, ne_drv_probe);
886 static void __exit ne_exit(void)
888 platform_driver_unregister(&ne_driver);
892 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
893 static struct net_device *dev_ne[MAX_NE_CARDS];
894 static int io[MAX_NE_CARDS];
895 static int irq[MAX_NE_CARDS];
896 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
898 module_param_array(io, int, NULL, 0);
899 module_param_array(irq, int, NULL, 0);
900 module_param_array(bad, int, NULL, 0);
901 MODULE_PARM_DESC(io, "I/O base address(es),required");
902 MODULE_PARM_DESC(irq, "IRQ number(s)");
903 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
904 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
905 MODULE_LICENSE("GPL");
907 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
908 that the ne2k probe is the last 8390 based probe to take place (as it
909 is at boot) and so the probe will get confused by any other 8390 cards.
910 ISA device autoprobes on a running machine are not recommended anyway. */
912 int __init init_module(void)
914 int this_dev, found = 0;
915 int plat_found = !ne_init();
917 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
918 struct net_device *dev = alloc_ei_netdev();
921 dev->irq = irq[this_dev];
922 dev->mem_end = bad[this_dev];
923 dev->base_addr = io[this_dev];
924 if (do_ne_probe(dev) == 0) {
925 dev_ne[found++] = dev;
929 if (found || plat_found)
931 if (io[this_dev] != 0)
932 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
934 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
937 if (found || plat_found)
942 static void cleanup_card(struct net_device *dev)
944 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
946 pnp_device_detach(idev);
947 free_irq(dev->irq, dev);
948 release_region(dev->base_addr, NE_IO_EXTENT);
951 void __exit cleanup_module(void)
956 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
957 struct net_device *dev = dev_ne[this_dev];
959 unregister_netdev(dev);
966 module_init(ne_init);
967 module_exit(ne_exit);