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 int ne_open(struct net_device *dev);
178 static int ne_close(struct net_device *dev);
180 static void ne_reset_8390(struct net_device *dev);
181 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
183 static void ne_block_input(struct net_device *dev, int count,
184 struct sk_buff *skb, int ring_offset);
185 static void ne_block_output(struct net_device *dev, const int count,
186 const unsigned char *buf, const int start_page);
189 /* Probe for various non-shared-memory ethercards.
191 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
192 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
193 the SAPROM, while other supposed NE2000 clones must be detected by their
196 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
197 mode results in doubled values, which can be detected and compensated for.
199 The probe is also responsible for initializing the card and filling
200 in the 'dev' and 'ei_status' structures.
202 We use the minimum memory size for some ethercard product lines, iff we can't
203 distinguish models. You can increase the packet buffer size by setting
204 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
205 E1010 starts at 0x100 and ends at 0x2000.
206 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
207 E2010 starts at 0x100 and ends at 0x4000.
208 E2010-x starts at 0x100 and ends at 0xffff. */
210 static int __init do_ne_probe(struct net_device *dev)
212 unsigned long base_addr = dev->base_addr;
213 #ifdef NEEDS_PORTLIST
214 int orig_irq = dev->irq;
217 /* First check any supplied i/o locations. User knows best. <cough> */
218 if (base_addr > 0x1ff) { /* Check a single specified location. */
219 int ret = ne_probe1(dev, base_addr);
221 printk(KERN_WARNING "ne.c: No NE*000 card found at "
222 "i/o = %#lx\n", base_addr);
225 else if (base_addr != 0) /* Don't probe at all. */
228 /* Then look for any installed ISAPnP clones */
229 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
232 #ifdef NEEDS_PORTLIST
233 /* Last resort. The semi-risky ISA auto-probe. */
234 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
235 int ioaddr = netcard_portlist[base_addr];
237 if (ne_probe1(dev, ioaddr) == 0)
245 static int __init ne_probe_isapnp(struct net_device *dev)
249 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
250 struct pnp_dev *idev = NULL;
252 while ((idev = pnp_find_dev(NULL,
253 isapnp_clone_list[i].vendor,
254 isapnp_clone_list[i].function,
256 /* Avoid already found cards from previous calls */
257 if (pnp_device_attach(idev) < 0)
259 if (pnp_activate_dev(idev) < 0) {
260 pnp_device_detach(idev);
263 /* if no io and irq, search for next */
264 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
265 pnp_device_detach(idev);
269 dev->base_addr = pnp_port_start(idev, 0);
270 dev->irq = pnp_irq(idev, 0);
271 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
272 (char *) isapnp_clone_list[i].driver_data,
273 dev->base_addr, dev->irq);
274 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
275 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
276 pnp_device_detach(idev);
279 ei_status.priv = (unsigned long)idev;
290 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
293 unsigned char SA_prom[32];
295 const char *name = NULL;
296 int start_page, stop_page;
297 int neX000, ctron, copam, bad_card;
299 static unsigned version_printed;
300 DECLARE_MAC_BUF(mac);
302 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
305 reg0 = inb_p(ioaddr);
311 /* Do a preliminary verification that we have a 8390. */
314 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
315 regd = inb_p(ioaddr + 0x0d);
316 outb_p(0xff, ioaddr + 0x0d);
317 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
318 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
319 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
320 outb_p(reg0, ioaddr);
321 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
327 if (ei_debug && version_printed++ == 0)
328 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
330 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
332 /* A user with a poor card that fails to ack the reset, or that
333 does not have a valid 0x57,0x57 signature can still use this
334 without having to recompile. Specifying an i/o address along
335 with an otherwise unused dev->mem_end value of "0xBAD" will
336 cause the driver to skip these parts of the probe. */
338 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
340 /* Reset card. Who knows what dain-bramaged state it was left in. */
343 unsigned long reset_start_time = jiffies;
345 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
346 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
348 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
349 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
351 printk(" (warning: no reset ack)");
354 printk(" not found (no reset ack).\n");
360 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
363 /* Read the 16 bytes of station address PROM.
364 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
365 We can't reliably read the SAPROM address without this.
366 (I learned the hard way!). */
368 struct {unsigned char value, offset; } program_seq[] =
370 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
371 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
372 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
374 {0x00, EN0_IMR}, /* Mask completion irq. */
376 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
377 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
380 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
382 {E8390_RREAD+E8390_START, E8390_CMD},
385 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
386 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
389 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
390 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
391 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
392 if (SA_prom[i] != SA_prom[i+1])
398 for (i = 0; i < 16; i++)
399 SA_prom[i] = SA_prom[i+i];
400 /* We must set the 8390 for word mode. */
401 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
402 start_page = NESM_START_PG;
405 * Realtek RTL8019AS datasheet says that the PSTOP register
406 * shouldn't exceed 0x60 in 8-bit mode.
407 * This chip can be identified by reading the signature from
408 * the remote byte count registers (otherwise write-only)...
410 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
411 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
412 inb(ioaddr + EN0_RCNTHI) == 0x70)
415 stop_page = NESM_STOP_PG;
417 start_page = NE1SM_START_PG;
418 stop_page = NE1SM_STOP_PG;
421 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
422 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
423 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
425 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
427 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
428 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
430 /* Set up the rest of the parameters. */
431 if (neX000 || bad_card || copam) {
432 name = (wordlength == 2) ? "NE2000" : "NE1000";
436 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
438 stop_page = (wordlength == 2) ? 0x40 : 0x20;
442 #ifdef SUPPORT_NE_BAD_CLONES
443 /* Ack! Well, there might be a *bad* NE*000 clone there.
444 Check for total bogus addresses. */
445 for (i = 0; bad_clone_list[i].name8; i++)
447 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
448 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
449 SA_prom[2] == bad_clone_list[i].SAprefix[2])
453 name = bad_clone_list[i].name16;
455 name = bad_clone_list[i].name8;
460 if (bad_clone_list[i].name8 == NULL)
462 printk(" not found (invalid signature %2.2x %2.2x).\n",
463 SA_prom[14], SA_prom[15]);
468 printk(" not found.\n");
476 unsigned long cookie = probe_irq_on();
477 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
478 outb_p(0x00, ioaddr + EN0_RCNTLO);
479 outb_p(0x00, ioaddr + EN0_RCNTHI);
480 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
481 mdelay(10); /* wait 10ms for interrupt to propagate */
482 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
483 dev->irq = probe_irq_off(cookie);
485 printk(" autoirq is %d\n", dev->irq);
486 } else if (dev->irq == 2)
487 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
488 or don't know which one to set. */
492 printk(" failed to detect IRQ line.\n");
497 /* Snarf the interrupt now. There's no point in waiting since we cannot
498 share and the board will usually be enabled. */
499 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
501 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
505 dev->base_addr = ioaddr;
507 #ifdef CONFIG_PLAT_MAPPI
508 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
509 ioaddr + E8390_CMD); /* 0x61 */
510 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
511 dev->dev_addr[i] = SA_prom[i]
512 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
515 for(i = 0; i < ETHER_ADDR_LEN; i++) {
516 dev->dev_addr[i] = SA_prom[i];
520 printk("%s\n", print_mac(mac, dev->dev_addr));
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 = eip_poll;
545 NS8390p_init(dev, 0);
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);
803 NS8390p_init(dev, 1);
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 int err, this_dev = pdev->id;
816 struct resource *res;
818 dev = alloc_eip_netdev();
822 /* ne.c doesn't populate resources in platform_device, but
823 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
826 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
828 dev->base_addr = res->start;
829 dev->irq = platform_get_irq(pdev, 0);
831 if (this_dev < 0 || this_dev >= MAX_NE_CARDS)
833 dev->base_addr = io[this_dev];
834 dev->irq = irq[this_dev];
835 dev->mem_end = bad[this_dev];
837 err = do_ne_probe(dev);
842 platform_set_drvdata(pdev, dev);
844 /* Update with any values found by probing, don't update if
845 * resources were specified.
848 io[this_dev] = dev->base_addr;
849 irq[this_dev] = dev->irq;
854 static int ne_drv_remove(struct platform_device *pdev)
856 struct net_device *dev = platform_get_drvdata(pdev);
859 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
860 netif_device_detach(dev);
861 unregister_netdev(dev);
863 pnp_device_detach(idev);
864 /* Careful ne_drv_remove can be called twice, once from
865 * the platform_driver.remove and again when the
866 * platform_device is being removed.
869 free_irq(dev->irq, dev);
870 release_region(dev->base_addr, NE_IO_EXTENT);
872 platform_set_drvdata(pdev, NULL);
877 /* Remove unused devices or all if true. */
878 static void ne_loop_rm_unreg(int all)
881 struct platform_device *pdev;
882 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
883 pdev = pdev_ne[this_dev];
884 /* No network device == unused */
885 if (pdev && (!platform_get_drvdata(pdev) || all)) {
887 platform_device_unregister(pdev);
888 pdev_ne[this_dev] = NULL;
894 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
896 struct net_device *dev = platform_get_drvdata(pdev);
898 if (netif_running(dev)) {
899 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
900 netif_device_detach(dev);
907 static int ne_drv_resume(struct platform_device *pdev)
909 struct net_device *dev = platform_get_drvdata(pdev);
911 if (netif_running(dev)) {
912 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
916 NS8390p_init(dev, 1);
917 netif_device_attach(dev);
922 #define ne_drv_suspend NULL
923 #define ne_drv_resume NULL
926 static struct platform_driver ne_driver = {
927 .remove = ne_drv_remove,
928 .suspend = ne_drv_suspend,
929 .resume = ne_drv_resume,
932 .owner = THIS_MODULE,
936 static void __init ne_add_devices(void)
939 struct platform_device *pdev;
941 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
942 if (pdev_ne[this_dev])
944 pdev = platform_device_register_simple(
945 DRV_NAME, this_dev, NULL, 0);
948 pdev_ne[this_dev] = pdev;
953 int __init init_module()
957 retval = platform_driver_probe(&ne_driver, ne_drv_probe);
960 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\""
961 " value(s) for ISA cards.\n");
966 /* Unregister unused platform_devices. */
971 static int __init ne_init(void)
973 int retval = platform_driver_probe(&ne_driver, ne_drv_probe);
975 /* Unregister unused platform_devices. */
979 module_init(ne_init);
981 struct net_device * __init ne_probe(int unit)
984 struct net_device *dev;
986 /* Find an empty slot, that is no net_device and zero io port. */
988 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
990 if (++this_dev == MAX_NE_CARDS)
991 return ERR_PTR(-ENOMEM);
994 /* Get irq, io from kernel command line */
995 dev = alloc_eip_netdev();
997 return ERR_PTR(-ENOMEM);
999 sprintf(dev->name, "eth%d", unit);
1000 netdev_boot_setup_check(dev);
1002 io[this_dev] = dev->base_addr;
1003 irq[this_dev] = dev->irq;
1004 bad[this_dev] = dev->mem_end;
1010 /* return the first device found */
1011 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
1012 if (pdev_ne[this_dev]) {
1013 dev = platform_get_drvdata(pdev_ne[this_dev]);
1019 return ERR_PTR(-ENODEV);
1023 static void __exit ne_exit(void)
1025 platform_driver_unregister(&ne_driver);
1026 ne_loop_rm_unreg(1);
1028 module_exit(ne_exit);