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;
301 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
304 reg0 = inb_p(ioaddr);
310 /* Do a preliminary verification that we have a 8390. */
313 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
314 regd = inb_p(ioaddr + 0x0d);
315 outb_p(0xff, ioaddr + 0x0d);
316 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
317 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
318 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
319 outb_p(reg0, ioaddr);
320 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
326 if (ei_debug && version_printed++ == 0)
327 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
329 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
331 /* A user with a poor card that fails to ack the reset, or that
332 does not have a valid 0x57,0x57 signature can still use this
333 without having to recompile. Specifying an i/o address along
334 with an otherwise unused dev->mem_end value of "0xBAD" will
335 cause the driver to skip these parts of the probe. */
337 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
339 /* Reset card. Who knows what dain-bramaged state it was left in. */
342 unsigned long reset_start_time = jiffies;
344 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
345 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
347 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
348 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
350 printk(" (warning: no reset ack)");
353 printk(" not found (no reset ack).\n");
359 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
362 /* Read the 16 bytes of station address PROM.
363 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
364 We can't reliably read the SAPROM address without this.
365 (I learned the hard way!). */
367 struct {unsigned char value, offset; } program_seq[] =
369 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
370 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
371 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
373 {0x00, EN0_IMR}, /* Mask completion irq. */
375 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
376 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
379 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
381 {E8390_RREAD+E8390_START, E8390_CMD},
384 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
385 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
388 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
389 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
390 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
391 if (SA_prom[i] != SA_prom[i+1])
397 for (i = 0; i < 16; i++)
398 SA_prom[i] = SA_prom[i+i];
399 /* We must set the 8390 for word mode. */
400 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
401 start_page = NESM_START_PG;
404 * Realtek RTL8019AS datasheet says that the PSTOP register
405 * shouldn't exceed 0x60 in 8-bit mode.
406 * This chip can be identified by reading the signature from
407 * the remote byte count registers (otherwise write-only)...
409 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
410 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
411 inb(ioaddr + EN0_RCNTHI) == 0x70)
414 stop_page = NESM_STOP_PG;
416 start_page = NE1SM_START_PG;
417 stop_page = NE1SM_STOP_PG;
420 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
421 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
422 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
424 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
426 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
427 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
429 /* Set up the rest of the parameters. */
430 if (neX000 || bad_card || copam) {
431 name = (wordlength == 2) ? "NE2000" : "NE1000";
435 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
437 stop_page = (wordlength == 2) ? 0x40 : 0x20;
441 #ifdef SUPPORT_NE_BAD_CLONES
442 /* Ack! Well, there might be a *bad* NE*000 clone there.
443 Check for total bogus addresses. */
444 for (i = 0; bad_clone_list[i].name8; i++)
446 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
447 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
448 SA_prom[2] == bad_clone_list[i].SAprefix[2])
452 name = bad_clone_list[i].name16;
454 name = bad_clone_list[i].name8;
459 if (bad_clone_list[i].name8 == NULL)
461 printk(" not found (invalid signature %2.2x %2.2x).\n",
462 SA_prom[14], SA_prom[15]);
467 printk(" not found.\n");
475 unsigned long cookie = probe_irq_on();
476 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
477 outb_p(0x00, ioaddr + EN0_RCNTLO);
478 outb_p(0x00, ioaddr + EN0_RCNTHI);
479 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
480 mdelay(10); /* wait 10ms for interrupt to propagate */
481 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
482 dev->irq = probe_irq_off(cookie);
484 printk(" autoirq is %d\n", dev->irq);
485 } else if (dev->irq == 2)
486 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
487 or don't know which one to set. */
491 printk(" failed to detect IRQ line.\n");
496 /* Snarf the interrupt now. There's no point in waiting since we cannot
497 share and the board will usually be enabled. */
498 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
500 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
504 dev->base_addr = ioaddr;
506 #ifdef CONFIG_PLAT_MAPPI
507 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
508 ioaddr + E8390_CMD); /* 0x61 */
509 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
510 dev->dev_addr[i] = SA_prom[i]
511 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
514 for(i = 0; i < ETHER_ADDR_LEN; i++) {
515 dev->dev_addr[i] = SA_prom[i];
519 printk("%pM\n", dev->dev_addr);
521 ei_status.name = name;
522 ei_status.tx_start_page = start_page;
523 ei_status.stop_page = stop_page;
525 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
526 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
528 ei_status.rx_start_page = start_page + TX_PAGES;
529 #ifdef PACKETBUF_MEMSIZE
530 /* Allow the packet buffer size to be overridden by know-it-alls. */
531 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
534 ei_status.reset_8390 = &ne_reset_8390;
535 ei_status.block_input = &ne_block_input;
536 ei_status.block_output = &ne_block_output;
537 ei_status.get_8390_hdr = &ne_get_8390_hdr;
539 dev->open = &ne_open;
540 dev->stop = &ne_close;
541 #ifdef CONFIG_NET_POLL_CONTROLLER
542 dev->poll_controller = eip_poll;
544 NS8390p_init(dev, 0);
546 ret = register_netdev(dev);
549 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
550 dev->name, name, ioaddr, dev->irq);
554 free_irq(dev->irq, dev);
556 release_region(ioaddr, NE_IO_EXTENT);
560 static int ne_open(struct net_device *dev)
566 static int ne_close(struct net_device *dev)
569 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
574 /* Hard reset the card. This used to pause for the same period that a
575 8390 reset command required, but that shouldn't be necessary. */
577 static void ne_reset_8390(struct net_device *dev)
579 unsigned long reset_start_time = jiffies;
582 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
584 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
585 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
588 ei_status.dmaing = 0;
590 /* This check _should_not_ be necessary, omit eventually. */
591 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
592 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
593 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
596 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
599 /* Grab the 8390 specific header. Similar to the block_input routine, but
600 we don't need to be concerned with ring wrap as the header will be at
601 the start of a page, so we optimize accordingly. */
603 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
605 int nic_base = dev->base_addr;
607 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
609 if (ei_status.dmaing)
611 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
612 "[DMAstat:%d][irqlock:%d].\n",
613 dev->name, ei_status.dmaing, ei_status.irqlock);
617 ei_status.dmaing |= 0x01;
618 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
619 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
620 outb_p(0, nic_base + EN0_RCNTHI);
621 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
622 outb_p(ring_page, nic_base + EN0_RSARHI);
623 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
625 if (ei_status.word16)
626 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
628 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
630 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
631 ei_status.dmaing &= ~0x01;
633 le16_to_cpus(&hdr->count);
636 /* Block input and output, similar to the Crynwr packet driver. If you
637 are porting to a new ethercard, look at the packet driver source for hints.
638 The NEx000 doesn't share the on-board packet memory -- you have to put
639 the packet out through the "remote DMA" dataport using outb. */
641 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
643 #ifdef NE_SANITY_CHECK
644 int xfer_count = count;
646 int nic_base = dev->base_addr;
647 char *buf = skb->data;
649 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
650 if (ei_status.dmaing)
652 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
653 "[DMAstat:%d][irqlock:%d].\n",
654 dev->name, ei_status.dmaing, ei_status.irqlock);
657 ei_status.dmaing |= 0x01;
658 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
659 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
660 outb_p(count >> 8, nic_base + EN0_RCNTHI);
661 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
662 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
663 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
664 if (ei_status.word16)
666 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
669 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
670 #ifdef NE_SANITY_CHECK
675 insb(NE_BASE + NE_DATAPORT, buf, count);
678 #ifdef NE_SANITY_CHECK
679 /* This was for the ALPHA version only, but enough people have
680 been encountering problems so it is still here. If you see
681 this message you either 1) have a slightly incompatible clone
682 or 2) have noise/speed problems with your bus. */
686 /* DMA termination address check... */
687 int addr, tries = 20;
689 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
690 -- it's broken for Rx on some cards! */
691 int high = inb_p(nic_base + EN0_RSARHI);
692 int low = inb_p(nic_base + EN0_RSARLO);
693 addr = (high << 8) + low;
694 if (((ring_offset + xfer_count) & 0xff) == low)
696 } while (--tries > 0);
698 printk(KERN_WARNING "%s: RX transfer address mismatch,"
699 "%#4.4x (expected) vs. %#4.4x (actual).\n",
700 dev->name, ring_offset + xfer_count, addr);
703 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
704 ei_status.dmaing &= ~0x01;
707 static void ne_block_output(struct net_device *dev, int count,
708 const unsigned char *buf, const int start_page)
710 int nic_base = NE_BASE;
711 unsigned long dma_start;
712 #ifdef NE_SANITY_CHECK
716 /* Round the count up for word writes. Do we need to do this?
717 What effect will an odd byte count have on the 8390?
718 I should check someday. */
720 if (ei_status.word16 && (count & 0x01))
723 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
724 if (ei_status.dmaing)
726 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
727 "[DMAstat:%d][irqlock:%d]\n",
728 dev->name, ei_status.dmaing, ei_status.irqlock);
731 ei_status.dmaing |= 0x01;
732 /* We should already be in page 0, but to be safe... */
733 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
735 #ifdef NE_SANITY_CHECK
739 #ifdef NE8390_RW_BUGFIX
740 /* Handle the read-before-write bug the same way as the
741 Crynwr packet driver -- the NatSemi method doesn't work.
742 Actually this doesn't always work either, but if you have
743 problems with your NEx000 this is better than nothing! */
745 outb_p(0x42, nic_base + EN0_RCNTLO);
746 outb_p(0x00, nic_base + EN0_RCNTHI);
747 outb_p(0x42, nic_base + EN0_RSARLO);
748 outb_p(0x00, nic_base + EN0_RSARHI);
749 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
750 /* Make certain that the dummy read has occurred. */
754 outb_p(ENISR_RDC, nic_base + EN0_ISR);
756 /* Now the normal output. */
757 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
758 outb_p(count >> 8, nic_base + EN0_RCNTHI);
759 outb_p(0x00, nic_base + EN0_RSARLO);
760 outb_p(start_page, nic_base + EN0_RSARHI);
762 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
763 if (ei_status.word16) {
764 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
766 outsb(NE_BASE + NE_DATAPORT, buf, count);
771 #ifdef NE_SANITY_CHECK
772 /* This was for the ALPHA version only, but enough people have
773 been encountering problems so it is still here. */
777 /* DMA termination address check... */
778 int addr, tries = 20;
780 int high = inb_p(nic_base + EN0_RSARHI);
781 int low = inb_p(nic_base + EN0_RSARLO);
782 addr = (high << 8) + low;
783 if ((start_page << 8) + count == addr)
785 } while (--tries > 0);
789 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
790 "%#4.4x (expected) vs. %#4.4x (actual).\n",
791 dev->name, (start_page << 8) + count, addr);
798 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
799 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
800 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
802 NS8390p_init(dev, 1);
806 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
807 ei_status.dmaing &= ~0x01;
811 static int __init ne_drv_probe(struct platform_device *pdev)
813 struct net_device *dev;
814 int err, this_dev = pdev->id;
815 struct resource *res;
817 dev = alloc_eip_netdev();
821 /* ne.c doesn't populate resources in platform_device, but
822 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
825 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
827 dev->base_addr = res->start;
828 dev->irq = platform_get_irq(pdev, 0);
830 if (this_dev < 0 || this_dev >= MAX_NE_CARDS)
832 dev->base_addr = io[this_dev];
833 dev->irq = irq[this_dev];
834 dev->mem_end = bad[this_dev];
836 err = do_ne_probe(dev);
841 platform_set_drvdata(pdev, dev);
843 /* Update with any values found by probing, don't update if
844 * resources were specified.
847 io[this_dev] = dev->base_addr;
848 irq[this_dev] = dev->irq;
853 static int ne_drv_remove(struct platform_device *pdev)
855 struct net_device *dev = platform_get_drvdata(pdev);
858 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
859 netif_device_detach(dev);
860 unregister_netdev(dev);
862 pnp_device_detach(idev);
863 /* Careful ne_drv_remove can be called twice, once from
864 * the platform_driver.remove and again when the
865 * platform_device is being removed.
868 free_irq(dev->irq, dev);
869 release_region(dev->base_addr, NE_IO_EXTENT);
871 platform_set_drvdata(pdev, NULL);
876 /* Remove unused devices or all if true. */
877 static void ne_loop_rm_unreg(int all)
880 struct platform_device *pdev;
881 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
882 pdev = pdev_ne[this_dev];
883 /* No network device == unused */
884 if (pdev && (!platform_get_drvdata(pdev) || all)) {
886 platform_device_unregister(pdev);
887 pdev_ne[this_dev] = NULL;
893 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
895 struct net_device *dev = platform_get_drvdata(pdev);
897 if (netif_running(dev)) {
898 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
899 netif_device_detach(dev);
906 static int ne_drv_resume(struct platform_device *pdev)
908 struct net_device *dev = platform_get_drvdata(pdev);
910 if (netif_running(dev)) {
911 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
915 NS8390p_init(dev, 1);
916 netif_device_attach(dev);
921 #define ne_drv_suspend NULL
922 #define ne_drv_resume NULL
925 static struct platform_driver ne_driver = {
926 .remove = ne_drv_remove,
927 .suspend = ne_drv_suspend,
928 .resume = ne_drv_resume,
931 .owner = THIS_MODULE,
935 static void __init ne_add_devices(void)
938 struct platform_device *pdev;
940 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
941 if (pdev_ne[this_dev])
943 pdev = platform_device_register_simple(
944 DRV_NAME, this_dev, NULL, 0);
947 pdev_ne[this_dev] = pdev;
952 int __init init_module()
956 retval = platform_driver_probe(&ne_driver, ne_drv_probe);
959 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\""
960 " value(s) for ISA cards.\n");
965 /* Unregister unused platform_devices. */
970 static int __init ne_init(void)
972 int retval = platform_driver_probe(&ne_driver, ne_drv_probe);
974 /* Unregister unused platform_devices. */
978 module_init(ne_init);
980 struct net_device * __init ne_probe(int unit)
983 struct net_device *dev;
985 /* Find an empty slot, that is no net_device and zero io port. */
987 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
989 if (++this_dev == MAX_NE_CARDS)
990 return ERR_PTR(-ENOMEM);
993 /* Get irq, io from kernel command line */
994 dev = alloc_eip_netdev();
996 return ERR_PTR(-ENOMEM);
998 sprintf(dev->name, "eth%d", unit);
999 netdev_boot_setup_check(dev);
1001 io[this_dev] = dev->base_addr;
1002 irq[this_dev] = dev->irq;
1003 bad[this_dev] = dev->mem_end;
1009 /* return the first device found */
1010 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
1011 if (pdev_ne[this_dev]) {
1012 dev = platform_get_drvdata(pdev_ne[this_dev]);
1018 return ERR_PTR(-ENODEV);
1022 static void __exit ne_exit(void)
1024 platform_driver_unregister(&ne_driver);
1025 ne_loop_rm_unreg(1);
1027 module_exit(ne_exit);