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>
62 /* Some defines that people can play with if so inclined. */
64 /* Do we support clones that don't adhere to 14,15 of the SAprom ? */
65 #define SUPPORT_NE_BAD_CLONES
66 /* 0xbad = bad sig or no reset ack */
69 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
70 static struct platform_device *pdev_ne[MAX_NE_CARDS];
71 static int io[MAX_NE_CARDS];
72 static int irq[MAX_NE_CARDS];
73 static int bad[MAX_NE_CARDS];
76 module_param_array(io, int, NULL, 0);
77 module_param_array(irq, int, NULL, 0);
78 module_param_array(bad, int, NULL, 0);
79 MODULE_PARM_DESC(io, "I/O base address(es),required");
80 MODULE_PARM_DESC(irq, "IRQ number(s)");
81 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
82 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
83 MODULE_LICENSE("GPL");
86 /* Do we perform extra sanity checks on stuff ? */
87 /* #define NE_SANITY_CHECK */
89 /* Do we implement the read before write bugfix ? */
90 /* #define NE_RW_BUGFIX */
92 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
93 /* #define PACKETBUF_MEMSIZE 0x40 */
95 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
96 that the ne2k probe is the last 8390 based probe to take place (as it
97 is at boot) and so the probe will get confused by any other 8390 cards.
98 ISA device autoprobes on a running machine are not recommended anyway. */
99 #if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
100 /* Do we need a portlist for the ISA auto-probe ? */
101 #define NEEDS_PORTLIST
104 /* A zero-terminated list of I/O addresses to be probed at boot. */
105 #ifdef NEEDS_PORTLIST
106 static unsigned int netcard_portlist[] __initdata = {
107 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
111 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
112 { ISAPNP_CARD_ID('A','X','E',0x2011),
113 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
114 (long) "NetGear EA201" },
115 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
116 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
117 (long) "NN NE2000" },
118 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
119 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
120 (long) "Generic PNP" },
121 { } /* terminate list */
124 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
126 #ifdef SUPPORT_NE_BAD_CLONES
127 /* A list of bad clones that we none-the-less recognize. */
128 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
129 bad_clone_list[] __initdata = {
130 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
131 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
132 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
133 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
134 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
135 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
136 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
137 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
138 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
139 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
140 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
141 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
142 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
143 #ifdef CONFIG_MACH_TX49XX
144 {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
146 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
151 /* ---- No user-serviceable parts below ---- */
153 #define NE_BASE (dev->base_addr)
155 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
156 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
157 #define NE_IO_EXTENT 0x20
159 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
160 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
161 #define NESM_START_PG 0x40 /* First page of TX buffer */
162 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
164 #if defined(CONFIG_PLAT_MAPPI)
165 # define DCR_VAL 0x4b
166 #elif defined(CONFIG_PLAT_OAKS32R) || \
167 defined(CONFIG_MACH_TX49XX)
168 # define DCR_VAL 0x48 /* 8-bit mode */
170 # define DCR_VAL 0x49
173 static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
174 static int ne_probe_isapnp(struct net_device *dev);
176 static void ne_reset_8390(struct net_device *dev);
177 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
179 static void ne_block_input(struct net_device *dev, int count,
180 struct sk_buff *skb, int ring_offset);
181 static void ne_block_output(struct net_device *dev, const int count,
182 const unsigned char *buf, const int start_page);
185 /* Probe for various non-shared-memory ethercards.
187 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
188 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
189 the SAPROM, while other supposed NE2000 clones must be detected by their
192 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
193 mode results in doubled values, which can be detected and compensated for.
195 The probe is also responsible for initializing the card and filling
196 in the 'dev' and 'ei_status' structures.
198 We use the minimum memory size for some ethercard product lines, iff we can't
199 distinguish models. You can increase the packet buffer size by setting
200 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
201 E1010 starts at 0x100 and ends at 0x2000.
202 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
203 E2010 starts at 0x100 and ends at 0x4000.
204 E2010-x starts at 0x100 and ends at 0xffff. */
206 static int __init do_ne_probe(struct net_device *dev)
208 unsigned long base_addr = dev->base_addr;
209 #ifdef NEEDS_PORTLIST
210 int orig_irq = dev->irq;
213 /* First check any supplied i/o locations. User knows best. <cough> */
214 if (base_addr > 0x1ff) { /* Check a single specified location. */
215 int ret = ne_probe1(dev, base_addr);
217 printk(KERN_WARNING "ne.c: No NE*000 card found at "
218 "i/o = %#lx\n", base_addr);
221 else if (base_addr != 0) /* Don't probe at all. */
224 /* Then look for any installed ISAPnP clones */
225 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
228 #ifdef NEEDS_PORTLIST
229 /* Last resort. The semi-risky ISA auto-probe. */
230 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
231 int ioaddr = netcard_portlist[base_addr];
233 if (ne_probe1(dev, ioaddr) == 0)
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%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 == BAD));
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 NS8390p_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 < ARRAY_SIZE(program_seq); 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, eip_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 < ETH_ALEN; i++) {
506 dev->dev_addr[i] = SA_prom[i]
507 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
510 for (i = 0; i < ETH_ALEN; i++) {
511 dev->dev_addr[i] = SA_prom[i];
515 printk("%pM\n", dev->dev_addr);
517 ei_status.name = name;
518 ei_status.tx_start_page = start_page;
519 ei_status.stop_page = stop_page;
521 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
522 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
524 ei_status.rx_start_page = start_page + TX_PAGES;
525 #ifdef PACKETBUF_MEMSIZE
526 /* Allow the packet buffer size to be overridden by know-it-alls. */
527 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
530 ei_status.reset_8390 = &ne_reset_8390;
531 ei_status.block_input = &ne_block_input;
532 ei_status.block_output = &ne_block_output;
533 ei_status.get_8390_hdr = &ne_get_8390_hdr;
536 dev->netdev_ops = &eip_netdev_ops;
537 NS8390p_init(dev, 0);
539 ret = register_netdev(dev);
542 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
543 dev->name, name, ioaddr, dev->irq);
547 free_irq(dev->irq, dev);
549 release_region(ioaddr, NE_IO_EXTENT);
553 /* Hard reset the card. This used to pause for the same period that a
554 8390 reset command required, but that shouldn't be necessary. */
556 static void ne_reset_8390(struct net_device *dev)
558 unsigned long reset_start_time = jiffies;
561 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
563 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
564 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
567 ei_status.dmaing = 0;
569 /* This check _should_not_ be necessary, omit eventually. */
570 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
571 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
572 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
575 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
578 /* Grab the 8390 specific header. Similar to the block_input routine, but
579 we don't need to be concerned with ring wrap as the header will be at
580 the start of a page, so we optimize accordingly. */
582 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
584 int nic_base = dev->base_addr;
586 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
588 if (ei_status.dmaing)
590 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
591 "[DMAstat:%d][irqlock:%d].\n",
592 dev->name, ei_status.dmaing, ei_status.irqlock);
596 ei_status.dmaing |= 0x01;
597 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
598 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
599 outb_p(0, nic_base + EN0_RCNTHI);
600 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
601 outb_p(ring_page, nic_base + EN0_RSARHI);
602 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
604 if (ei_status.word16)
605 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
607 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
609 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
610 ei_status.dmaing &= ~0x01;
612 le16_to_cpus(&hdr->count);
615 /* Block input and output, similar to the Crynwr packet driver. If you
616 are porting to a new ethercard, look at the packet driver source for hints.
617 The NEx000 doesn't share the on-board packet memory -- you have to put
618 the packet out through the "remote DMA" dataport using outb. */
620 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
622 #ifdef NE_SANITY_CHECK
623 int xfer_count = count;
625 int nic_base = dev->base_addr;
626 char *buf = skb->data;
628 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
629 if (ei_status.dmaing)
631 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
632 "[DMAstat:%d][irqlock:%d].\n",
633 dev->name, ei_status.dmaing, ei_status.irqlock);
636 ei_status.dmaing |= 0x01;
637 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
638 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
639 outb_p(count >> 8, nic_base + EN0_RCNTHI);
640 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
641 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
642 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
643 if (ei_status.word16)
645 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
648 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
649 #ifdef NE_SANITY_CHECK
654 insb(NE_BASE + NE_DATAPORT, buf, count);
657 #ifdef NE_SANITY_CHECK
658 /* This was for the ALPHA version only, but enough people have
659 been encountering problems so it is still here. If you see
660 this message you either 1) have a slightly incompatible clone
661 or 2) have noise/speed problems with your bus. */
665 /* DMA termination address check... */
666 int addr, tries = 20;
668 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
669 -- it's broken for Rx on some cards! */
670 int high = inb_p(nic_base + EN0_RSARHI);
671 int low = inb_p(nic_base + EN0_RSARLO);
672 addr = (high << 8) + low;
673 if (((ring_offset + xfer_count) & 0xff) == low)
675 } while (--tries > 0);
677 printk(KERN_WARNING "%s: RX transfer address mismatch,"
678 "%#4.4x (expected) vs. %#4.4x (actual).\n",
679 dev->name, ring_offset + xfer_count, addr);
682 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
683 ei_status.dmaing &= ~0x01;
686 static void ne_block_output(struct net_device *dev, int count,
687 const unsigned char *buf, const int start_page)
689 int nic_base = NE_BASE;
690 unsigned long dma_start;
691 #ifdef NE_SANITY_CHECK
695 /* Round the count up for word writes. Do we need to do this?
696 What effect will an odd byte count have on the 8390?
697 I should check someday. */
699 if (ei_status.word16 && (count & 0x01))
702 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
703 if (ei_status.dmaing)
705 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
706 "[DMAstat:%d][irqlock:%d]\n",
707 dev->name, ei_status.dmaing, ei_status.irqlock);
710 ei_status.dmaing |= 0x01;
711 /* We should already be in page 0, but to be safe... */
712 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
714 #ifdef NE_SANITY_CHECK
718 #ifdef NE8390_RW_BUGFIX
719 /* Handle the read-before-write bug the same way as the
720 Crynwr packet driver -- the NatSemi method doesn't work.
721 Actually this doesn't always work either, but if you have
722 problems with your NEx000 this is better than nothing! */
724 outb_p(0x42, nic_base + EN0_RCNTLO);
725 outb_p(0x00, nic_base + EN0_RCNTHI);
726 outb_p(0x42, nic_base + EN0_RSARLO);
727 outb_p(0x00, nic_base + EN0_RSARHI);
728 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
729 /* Make certain that the dummy read has occurred. */
733 outb_p(ENISR_RDC, nic_base + EN0_ISR);
735 /* Now the normal output. */
736 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
737 outb_p(count >> 8, nic_base + EN0_RCNTHI);
738 outb_p(0x00, nic_base + EN0_RSARLO);
739 outb_p(start_page, nic_base + EN0_RSARHI);
741 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
742 if (ei_status.word16) {
743 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
745 outsb(NE_BASE + NE_DATAPORT, buf, count);
750 #ifdef NE_SANITY_CHECK
751 /* This was for the ALPHA version only, but enough people have
752 been encountering problems so it is still here. */
756 /* DMA termination address check... */
757 int addr, tries = 20;
759 int high = inb_p(nic_base + EN0_RSARHI);
760 int low = inb_p(nic_base + EN0_RSARLO);
761 addr = (high << 8) + low;
762 if ((start_page << 8) + count == addr)
764 } while (--tries > 0);
768 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
769 "%#4.4x (expected) vs. %#4.4x (actual).\n",
770 dev->name, (start_page << 8) + count, addr);
777 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
778 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
779 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
781 NS8390p_init(dev, 1);
785 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
786 ei_status.dmaing &= ~0x01;
789 static int __init ne_drv_probe(struct platform_device *pdev)
791 struct net_device *dev;
792 int err, this_dev = pdev->id;
793 struct resource *res;
795 dev = alloc_eip_netdev();
799 /* ne.c doesn't populate resources in platform_device, but
800 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
803 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
805 dev->base_addr = res->start;
806 dev->irq = platform_get_irq(pdev, 0);
808 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(void)
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);