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
67 /* 0xbad = bad sig or no reset ack */
70 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
71 static struct platform_device *pdev_ne[MAX_NE_CARDS];
72 static int io[MAX_NE_CARDS];
73 static int irq[MAX_NE_CARDS];
74 static int bad[MAX_NE_CARDS];
77 module_param_array(io, int, NULL, 0);
78 module_param_array(irq, int, NULL, 0);
79 module_param_array(bad, int, NULL, 0);
80 MODULE_PARM_DESC(io, "I/O base address(es),required");
81 MODULE_PARM_DESC(irq, "IRQ number(s)");
82 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
83 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
84 MODULE_LICENSE("GPL");
87 /* Do we perform extra sanity checks on stuff ? */
88 /* #define NE_SANITY_CHECK */
90 /* Do we implement the read before write bugfix ? */
91 /* #define NE_RW_BUGFIX */
93 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
94 /* #define PACKETBUF_MEMSIZE 0x40 */
96 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
97 that the ne2k probe is the last 8390 based probe to take place (as it
98 is at boot) and so the probe will get confused by any other 8390 cards.
99 ISA device autoprobes on a running machine are not recommended anyway. */
100 #if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
101 /* Do we need a portlist for the ISA auto-probe ? */
102 #define NEEDS_PORTLIST
105 /* A zero-terminated list of I/O addresses to be probed at boot. */
106 #ifdef NEEDS_PORTLIST
107 static unsigned int netcard_portlist[] __initdata = {
108 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
112 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
113 { ISAPNP_CARD_ID('A','X','E',0x2011),
114 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
115 (long) "NetGear EA201" },
116 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
117 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
118 (long) "NN NE2000" },
119 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
120 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
121 (long) "Generic PNP" },
122 { } /* terminate list */
125 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
127 #ifdef SUPPORT_NE_BAD_CLONES
128 /* A list of bad clones that we none-the-less recognize. */
129 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
130 bad_clone_list[] __initdata = {
131 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
132 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
133 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
134 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
135 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
136 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
137 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
138 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
139 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
140 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
141 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
142 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
143 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
144 #ifdef CONFIG_MACH_TX49XX
145 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
147 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
152 /* ---- No user-serviceable parts below ---- */
154 #define NE_BASE (dev->base_addr)
156 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
157 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
158 #define NE_IO_EXTENT 0x20
160 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
161 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
162 #define NESM_START_PG 0x40 /* First page of TX buffer */
163 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
165 #if defined(CONFIG_PLAT_MAPPI)
166 # define DCR_VAL 0x4b
167 #elif defined(CONFIG_PLAT_OAKS32R) || \
168 defined(CONFIG_MACH_TX49XX)
169 # define DCR_VAL 0x48 /* 8-bit mode */
171 # define DCR_VAL 0x49
174 static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
175 static int ne_probe_isapnp(struct net_device *dev);
177 static void ne_reset_8390(struct net_device *dev);
178 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
180 static void ne_block_input(struct net_device *dev, int count,
181 struct sk_buff *skb, int ring_offset);
182 static void ne_block_output(struct net_device *dev, const int count,
183 const unsigned char *buf, const int start_page);
186 /* Probe for various non-shared-memory ethercards.
188 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
189 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
190 the SAPROM, while other supposed NE2000 clones must be detected by their
193 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
194 mode results in doubled values, which can be detected and compensated for.
196 The probe is also responsible for initializing the card and filling
197 in the 'dev' and 'ei_status' structures.
199 We use the minimum memory size for some ethercard product lines, iff we can't
200 distinguish models. You can increase the packet buffer size by setting
201 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
202 E1010 starts at 0x100 and ends at 0x2000.
203 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
204 E2010 starts at 0x100 and ends at 0x4000.
205 E2010-x starts at 0x100 and ends at 0xffff. */
207 static int __init do_ne_probe(struct net_device *dev)
209 unsigned long base_addr = dev->base_addr;
210 #ifdef NEEDS_PORTLIST
211 int orig_irq = dev->irq;
214 /* First check any supplied i/o locations. User knows best. <cough> */
215 if (base_addr > 0x1ff) { /* Check a single specified location. */
216 int ret = ne_probe1(dev, base_addr);
218 printk(KERN_WARNING "ne.c: No NE*000 card found at "
219 "i/o = %#lx\n", base_addr);
222 else if (base_addr != 0) /* Don't probe at all. */
225 /* Then look for any installed ISAPnP clones */
226 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
229 #ifdef NEEDS_PORTLIST
230 /* Last resort. The semi-risky ISA auto-probe. */
231 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
232 int ioaddr = netcard_portlist[base_addr];
234 if (ne_probe1(dev, ioaddr) == 0)
242 static int __init ne_probe_isapnp(struct net_device *dev)
246 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
247 struct pnp_dev *idev = NULL;
249 while ((idev = pnp_find_dev(NULL,
250 isapnp_clone_list[i].vendor,
251 isapnp_clone_list[i].function,
253 /* Avoid already found cards from previous calls */
254 if (pnp_device_attach(idev) < 0)
256 if (pnp_activate_dev(idev) < 0) {
257 pnp_device_detach(idev);
260 /* if no io and irq, search for next */
261 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
262 pnp_device_detach(idev);
266 dev->base_addr = pnp_port_start(idev, 0);
267 dev->irq = pnp_irq(idev, 0);
268 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
269 (char *) isapnp_clone_list[i].driver_data,
270 dev->base_addr, dev->irq);
271 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
272 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
273 pnp_device_detach(idev);
276 ei_status.priv = (unsigned long)idev;
287 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
290 unsigned char SA_prom[32];
292 const char *name = NULL;
293 int start_page, stop_page;
294 int neX000, ctron, copam, bad_card;
296 static unsigned version_printed;
298 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
301 reg0 = inb_p(ioaddr);
307 /* Do a preliminary verification that we have a 8390. */
310 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
311 regd = inb_p(ioaddr + 0x0d);
312 outb_p(0xff, ioaddr + 0x0d);
313 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
314 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
315 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
316 outb_p(reg0, ioaddr);
317 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
323 if (ei_debug && version_printed++ == 0)
324 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
326 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
328 /* A user with a poor card that fails to ack the reset, or that
329 does not have a valid 0x57,0x57 signature can still use this
330 without having to recompile. Specifying an i/o address along
331 with an otherwise unused dev->mem_end value of "0xBAD" will
332 cause the driver to skip these parts of the probe. */
334 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
336 /* Reset card. Who knows what dain-bramaged state it was left in. */
339 unsigned long reset_start_time = jiffies;
341 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
342 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
344 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
345 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
347 printk(" (warning: no reset ack)");
350 printk(" not found (no reset ack).\n");
356 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
359 /* Read the 16 bytes of station address PROM.
360 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
361 We can't reliably read the SAPROM address without this.
362 (I learned the hard way!). */
364 struct {unsigned char value, offset; } program_seq[] =
366 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
367 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
368 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
370 {0x00, EN0_IMR}, /* Mask completion irq. */
372 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
373 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
376 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
378 {E8390_RREAD+E8390_START, E8390_CMD},
381 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
382 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
385 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
386 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
387 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
388 if (SA_prom[i] != SA_prom[i+1])
394 for (i = 0; i < 16; i++)
395 SA_prom[i] = SA_prom[i+i];
396 /* We must set the 8390 for word mode. */
397 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
398 start_page = NESM_START_PG;
401 * Realtek RTL8019AS datasheet says that the PSTOP register
402 * shouldn't exceed 0x60 in 8-bit mode.
403 * This chip can be identified by reading the signature from
404 * the remote byte count registers (otherwise write-only)...
406 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
407 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
408 inb(ioaddr + EN0_RCNTHI) == 0x70)
411 stop_page = NESM_STOP_PG;
413 start_page = NE1SM_START_PG;
414 stop_page = NE1SM_STOP_PG;
417 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
418 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
419 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
421 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
423 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
424 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
426 /* Set up the rest of the parameters. */
427 if (neX000 || bad_card || copam) {
428 name = (wordlength == 2) ? "NE2000" : "NE1000";
432 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
434 stop_page = (wordlength == 2) ? 0x40 : 0x20;
438 #ifdef SUPPORT_NE_BAD_CLONES
439 /* Ack! Well, there might be a *bad* NE*000 clone there.
440 Check for total bogus addresses. */
441 for (i = 0; bad_clone_list[i].name8; i++)
443 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
444 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
445 SA_prom[2] == bad_clone_list[i].SAprefix[2])
449 name = bad_clone_list[i].name16;
451 name = bad_clone_list[i].name8;
456 if (bad_clone_list[i].name8 == NULL)
458 printk(" not found (invalid signature %2.2x %2.2x).\n",
459 SA_prom[14], SA_prom[15]);
464 printk(" not found.\n");
472 unsigned long cookie = probe_irq_on();
473 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
474 outb_p(0x00, ioaddr + EN0_RCNTLO);
475 outb_p(0x00, ioaddr + EN0_RCNTHI);
476 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
477 mdelay(10); /* wait 10ms for interrupt to propagate */
478 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
479 dev->irq = probe_irq_off(cookie);
481 printk(" autoirq is %d\n", dev->irq);
482 } else if (dev->irq == 2)
483 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
484 or don't know which one to set. */
488 printk(" failed to detect IRQ line.\n");
493 /* Snarf the interrupt now. There's no point in waiting since we cannot
494 share and the board will usually be enabled. */
495 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
497 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
501 dev->base_addr = ioaddr;
503 #ifdef CONFIG_PLAT_MAPPI
504 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
505 ioaddr + E8390_CMD); /* 0x61 */
506 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
507 dev->dev_addr[i] = SA_prom[i]
508 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
511 for(i = 0; i < ETHER_ADDR_LEN; i++) {
512 dev->dev_addr[i] = SA_prom[i];
516 printk("%pM\n", dev->dev_addr);
518 ei_status.name = name;
519 ei_status.tx_start_page = start_page;
520 ei_status.stop_page = stop_page;
522 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
523 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
525 ei_status.rx_start_page = start_page + TX_PAGES;
526 #ifdef PACKETBUF_MEMSIZE
527 /* Allow the packet buffer size to be overridden by know-it-alls. */
528 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
531 ei_status.reset_8390 = &ne_reset_8390;
532 ei_status.block_input = &ne_block_input;
533 ei_status.block_output = &ne_block_output;
534 ei_status.get_8390_hdr = &ne_get_8390_hdr;
537 dev->netdev_ops = &eip_netdev_ops;
538 NS8390p_init(dev, 0);
540 ret = register_netdev(dev);
543 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
544 dev->name, name, ioaddr, dev->irq);
548 free_irq(dev->irq, dev);
550 release_region(ioaddr, NE_IO_EXTENT);
554 /* Hard reset the card. This used to pause for the same period that a
555 8390 reset command required, but that shouldn't be necessary. */
557 static void ne_reset_8390(struct net_device *dev)
559 unsigned long reset_start_time = jiffies;
562 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
564 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
565 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
568 ei_status.dmaing = 0;
570 /* This check _should_not_ be necessary, omit eventually. */
571 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
572 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
573 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
576 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
579 /* Grab the 8390 specific header. Similar to the block_input routine, but
580 we don't need to be concerned with ring wrap as the header will be at
581 the start of a page, so we optimize accordingly. */
583 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
585 int nic_base = dev->base_addr;
587 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
589 if (ei_status.dmaing)
591 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
592 "[DMAstat:%d][irqlock:%d].\n",
593 dev->name, ei_status.dmaing, ei_status.irqlock);
597 ei_status.dmaing |= 0x01;
598 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
599 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
600 outb_p(0, nic_base + EN0_RCNTHI);
601 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
602 outb_p(ring_page, nic_base + EN0_RSARHI);
603 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
605 if (ei_status.word16)
606 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
608 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
610 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
611 ei_status.dmaing &= ~0x01;
613 le16_to_cpus(&hdr->count);
616 /* Block input and output, similar to the Crynwr packet driver. If you
617 are porting to a new ethercard, look at the packet driver source for hints.
618 The NEx000 doesn't share the on-board packet memory -- you have to put
619 the packet out through the "remote DMA" dataport using outb. */
621 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
623 #ifdef NE_SANITY_CHECK
624 int xfer_count = count;
626 int nic_base = dev->base_addr;
627 char *buf = skb->data;
629 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
630 if (ei_status.dmaing)
632 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
633 "[DMAstat:%d][irqlock:%d].\n",
634 dev->name, ei_status.dmaing, ei_status.irqlock);
637 ei_status.dmaing |= 0x01;
638 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
639 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
640 outb_p(count >> 8, nic_base + EN0_RCNTHI);
641 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
642 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
643 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
644 if (ei_status.word16)
646 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
649 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
650 #ifdef NE_SANITY_CHECK
655 insb(NE_BASE + NE_DATAPORT, buf, count);
658 #ifdef NE_SANITY_CHECK
659 /* This was for the ALPHA version only, but enough people have
660 been encountering problems so it is still here. If you see
661 this message you either 1) have a slightly incompatible clone
662 or 2) have noise/speed problems with your bus. */
666 /* DMA termination address check... */
667 int addr, tries = 20;
669 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
670 -- it's broken for Rx on some cards! */
671 int high = inb_p(nic_base + EN0_RSARHI);
672 int low = inb_p(nic_base + EN0_RSARLO);
673 addr = (high << 8) + low;
674 if (((ring_offset + xfer_count) & 0xff) == low)
676 } while (--tries > 0);
678 printk(KERN_WARNING "%s: RX transfer address mismatch,"
679 "%#4.4x (expected) vs. %#4.4x (actual).\n",
680 dev->name, ring_offset + xfer_count, addr);
683 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
684 ei_status.dmaing &= ~0x01;
687 static void ne_block_output(struct net_device *dev, int count,
688 const unsigned char *buf, const int start_page)
690 int nic_base = NE_BASE;
691 unsigned long dma_start;
692 #ifdef NE_SANITY_CHECK
696 /* Round the count up for word writes. Do we need to do this?
697 What effect will an odd byte count have on the 8390?
698 I should check someday. */
700 if (ei_status.word16 && (count & 0x01))
703 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
704 if (ei_status.dmaing)
706 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
707 "[DMAstat:%d][irqlock:%d]\n",
708 dev->name, ei_status.dmaing, ei_status.irqlock);
711 ei_status.dmaing |= 0x01;
712 /* We should already be in page 0, but to be safe... */
713 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
715 #ifdef NE_SANITY_CHECK
719 #ifdef NE8390_RW_BUGFIX
720 /* Handle the read-before-write bug the same way as the
721 Crynwr packet driver -- the NatSemi method doesn't work.
722 Actually this doesn't always work either, but if you have
723 problems with your NEx000 this is better than nothing! */
725 outb_p(0x42, nic_base + EN0_RCNTLO);
726 outb_p(0x00, nic_base + EN0_RCNTHI);
727 outb_p(0x42, nic_base + EN0_RSARLO);
728 outb_p(0x00, nic_base + EN0_RSARHI);
729 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
730 /* Make certain that the dummy read has occurred. */
734 outb_p(ENISR_RDC, nic_base + EN0_ISR);
736 /* Now the normal output. */
737 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
738 outb_p(count >> 8, nic_base + EN0_RCNTHI);
739 outb_p(0x00, nic_base + EN0_RSARLO);
740 outb_p(start_page, nic_base + EN0_RSARHI);
742 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
743 if (ei_status.word16) {
744 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
746 outsb(NE_BASE + NE_DATAPORT, buf, count);
751 #ifdef NE_SANITY_CHECK
752 /* This was for the ALPHA version only, but enough people have
753 been encountering problems so it is still here. */
757 /* DMA termination address check... */
758 int addr, tries = 20;
760 int high = inb_p(nic_base + EN0_RSARHI);
761 int low = inb_p(nic_base + EN0_RSARLO);
762 addr = (high << 8) + low;
763 if ((start_page << 8) + count == addr)
765 } while (--tries > 0);
769 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
770 "%#4.4x (expected) vs. %#4.4x (actual).\n",
771 dev->name, (start_page << 8) + count, addr);
778 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
779 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
780 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
782 NS8390p_init(dev, 1);
786 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
787 ei_status.dmaing &= ~0x01;
791 static int __init ne_drv_probe(struct platform_device *pdev)
793 struct net_device *dev;
794 int err, this_dev = pdev->id;
795 struct resource *res;
797 dev = alloc_eip_netdev();
801 /* ne.c doesn't populate resources in platform_device, but
802 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
805 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
807 dev->base_addr = res->start;
808 dev->irq = platform_get_irq(pdev, 0);
810 if (this_dev < 0 || this_dev >= MAX_NE_CARDS)
812 dev->base_addr = io[this_dev];
813 dev->irq = irq[this_dev];
814 dev->mem_end = bad[this_dev];
816 err = do_ne_probe(dev);
821 platform_set_drvdata(pdev, dev);
823 /* Update with any values found by probing, don't update if
824 * resources were specified.
827 io[this_dev] = dev->base_addr;
828 irq[this_dev] = dev->irq;
833 static int ne_drv_remove(struct platform_device *pdev)
835 struct net_device *dev = platform_get_drvdata(pdev);
838 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
839 netif_device_detach(dev);
840 unregister_netdev(dev);
842 pnp_device_detach(idev);
843 /* Careful ne_drv_remove can be called twice, once from
844 * the platform_driver.remove and again when the
845 * platform_device is being removed.
848 free_irq(dev->irq, dev);
849 release_region(dev->base_addr, NE_IO_EXTENT);
851 platform_set_drvdata(pdev, NULL);
856 /* Remove unused devices or all if true. */
857 static void ne_loop_rm_unreg(int all)
860 struct platform_device *pdev;
861 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
862 pdev = pdev_ne[this_dev];
863 /* No network device == unused */
864 if (pdev && (!platform_get_drvdata(pdev) || all)) {
866 platform_device_unregister(pdev);
867 pdev_ne[this_dev] = NULL;
873 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
875 struct net_device *dev = platform_get_drvdata(pdev);
877 if (netif_running(dev)) {
878 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
879 netif_device_detach(dev);
886 static int ne_drv_resume(struct platform_device *pdev)
888 struct net_device *dev = platform_get_drvdata(pdev);
890 if (netif_running(dev)) {
891 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
895 NS8390p_init(dev, 1);
896 netif_device_attach(dev);
901 #define ne_drv_suspend NULL
902 #define ne_drv_resume NULL
905 static struct platform_driver ne_driver = {
906 .remove = ne_drv_remove,
907 .suspend = ne_drv_suspend,
908 .resume = ne_drv_resume,
911 .owner = THIS_MODULE,
915 static void __init ne_add_devices(void)
918 struct platform_device *pdev;
920 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
921 if (pdev_ne[this_dev])
923 pdev = platform_device_register_simple(
924 DRV_NAME, this_dev, NULL, 0);
927 pdev_ne[this_dev] = pdev;
932 int __init init_module()
936 retval = platform_driver_probe(&ne_driver, ne_drv_probe);
939 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\""
940 " value(s) for ISA cards.\n");
945 /* Unregister unused platform_devices. */
950 static int __init ne_init(void)
952 int retval = platform_driver_probe(&ne_driver, ne_drv_probe);
954 /* Unregister unused platform_devices. */
958 module_init(ne_init);
960 struct net_device * __init ne_probe(int unit)
963 struct net_device *dev;
965 /* Find an empty slot, that is no net_device and zero io port. */
967 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
969 if (++this_dev == MAX_NE_CARDS)
970 return ERR_PTR(-ENOMEM);
973 /* Get irq, io from kernel command line */
974 dev = alloc_eip_netdev();
976 return ERR_PTR(-ENOMEM);
978 sprintf(dev->name, "eth%d", unit);
979 netdev_boot_setup_check(dev);
981 io[this_dev] = dev->base_addr;
982 irq[this_dev] = dev->irq;
983 bad[this_dev] = dev->mem_end;
989 /* return the first device found */
990 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
991 if (pdev_ne[this_dev]) {
992 dev = platform_get_drvdata(pdev_ne[this_dev]);
998 return ERR_PTR(-ENODEV);
1002 static void __exit ne_exit(void)
1004 platform_driver_unregister(&ne_driver);
1005 ne_loop_rm_unreg(1);
1007 module_exit(ne_exit);