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];
74 static u32 ne_msg_enable;
77 module_param_hw_array(io, int, ioport, NULL, 0);
78 module_param_hw_array(irq, int, irq, NULL, 0);
79 module_param_array(bad, int, NULL, 0);
80 module_param_named(msg_enable, ne_msg_enable, uint, 0444);
81 MODULE_PARM_DESC(io, "I/O base address(es),required");
82 MODULE_PARM_DESC(irq, "IRQ number(s)");
83 MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
84 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
85 MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
86 MODULE_LICENSE("GPL");
89 /* Do we perform extra sanity checks on stuff ? */
90 /* #define NE_SANITY_CHECK */
92 /* Do we implement the read before write bugfix ? */
93 /* #define NE_RW_BUGFIX */
95 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
96 /* #define PACKETBUF_MEMSIZE 0x40 */
98 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
99 that the ne2k probe is the last 8390 based probe to take place (as it
100 is at boot) and so the probe will get confused by any other 8390 cards.
101 ISA device autoprobes on a running machine are not recommended anyway. */
102 #if !defined(MODULE) && defined(CONFIG_ISA)
103 /* Do we need a portlist for the ISA auto-probe ? */
104 #define NEEDS_PORTLIST
107 /* A zero-terminated list of I/O addresses to be probed at boot. */
108 #ifdef NEEDS_PORTLIST
109 static unsigned int netcard_portlist[] __initdata = {
110 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
114 static struct isapnp_device_id isapnp_clone_list[] __initdata = {
115 { ISAPNP_CARD_ID('A','X','E',0x2011),
116 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
117 (long) "NetGear EA201" },
118 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
119 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
120 (long) "NN NE2000" },
121 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
122 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
123 (long) "Generic PNP" },
124 { } /* terminate list */
127 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
129 #ifdef SUPPORT_NE_BAD_CLONES
130 /* A list of bad clones that we none-the-less recognize. */
131 static struct { const char *name8, *name16; unsigned char SAprefix[4];}
132 bad_clone_list[] __initdata = {
133 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
134 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
135 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
136 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
137 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
138 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
139 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
140 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
141 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
142 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
143 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
144 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
145 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
146 #ifdef CONFIG_MACH_TX49XX
147 {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
149 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
154 /* ---- No user-serviceable parts below ---- */
156 #define NE_BASE (dev->base_addr)
158 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
159 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
160 #define NE_IO_EXTENT 0x20
162 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
163 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
164 #define NESM_START_PG 0x40 /* First page of TX buffer */
165 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
167 #if defined(CONFIG_MACH_TX49XX)
168 # define DCR_VAL 0x48 /* 8-bit mode */
169 #elif defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */
170 # define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49)
172 # define DCR_VAL 0x49
175 static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
176 static int ne_probe_isapnp(struct net_device *dev);
178 static void ne_reset_8390(struct net_device *dev);
179 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
181 static void ne_block_input(struct net_device *dev, int count,
182 struct sk_buff *skb, int ring_offset);
183 static void ne_block_output(struct net_device *dev, const int count,
184 const unsigned char *buf, const int start_page);
187 /* Probe for various non-shared-memory ethercards.
189 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
190 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
191 the SAPROM, while other supposed NE2000 clones must be detected by their
194 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
195 mode results in doubled values, which can be detected and compensated for.
197 The probe is also responsible for initializing the card and filling
198 in the 'dev' and 'ei_status' structures.
200 We use the minimum memory size for some ethercard product lines, iff we can't
201 distinguish models. You can increase the packet buffer size by setting
202 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
203 E1010 starts at 0x100 and ends at 0x2000.
204 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
205 E2010 starts at 0x100 and ends at 0x4000.
206 E2010-x starts at 0x100 and ends at 0xffff. */
208 static int __init do_ne_probe(struct net_device *dev)
210 unsigned long base_addr = dev->base_addr;
211 #ifdef NEEDS_PORTLIST
212 int orig_irq = dev->irq;
215 /* First check any supplied i/o locations. User knows best. <cough> */
216 if (base_addr > 0x1ff) { /* Check a single specified location. */
217 int ret = ne_probe1(dev, base_addr);
219 netdev_warn(dev, "ne.c: No NE*000 card found at "
220 "i/o = %#lx\n", base_addr);
223 else if (base_addr != 0) /* Don't probe at all. */
226 /* Then look for any installed ISAPnP clones */
227 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
230 #ifdef NEEDS_PORTLIST
231 /* Last resort. The semi-risky ISA auto-probe. */
232 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
233 int ioaddr = netcard_portlist[base_addr];
235 if (ne_probe1(dev, ioaddr) == 0)
243 static int __init ne_probe_isapnp(struct net_device *dev)
247 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
248 struct pnp_dev *idev = NULL;
250 while ((idev = pnp_find_dev(NULL,
251 isapnp_clone_list[i].vendor,
252 isapnp_clone_list[i].function,
254 /* Avoid already found cards from previous calls */
255 if (pnp_device_attach(idev) < 0)
257 if (pnp_activate_dev(idev) < 0) {
258 pnp_device_detach(idev);
261 /* if no io and irq, search for next */
262 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
263 pnp_device_detach(idev);
267 dev->base_addr = pnp_port_start(idev, 0);
268 dev->irq = pnp_irq(idev, 0);
270 "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
271 (char *) isapnp_clone_list[i].driver_data,
272 dev->base_addr, dev->irq);
273 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
275 "ne.c: Probe of ISAPnP card at %#lx failed.\n",
277 pnp_device_detach(idev);
280 ei_status.priv = (unsigned long)idev;
291 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
294 unsigned char SA_prom[32];
296 const char *name = NULL;
297 int start_page, stop_page;
298 int neX000, ctron, copam, bad_card;
300 static unsigned version_printed;
301 struct ei_device *ei_local = netdev_priv(dev);
303 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
306 reg0 = inb_p(ioaddr);
312 /* Do a preliminary verification that we have a 8390. */
315 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
316 regd = inb_p(ioaddr + 0x0d);
317 outb_p(0xff, ioaddr + 0x0d);
318 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
319 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
320 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
321 outb_p(reg0, ioaddr);
322 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
328 if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
329 netdev_info(dev, "%s%s", version1, version2);
331 netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr);
333 /* A user with a poor card that fails to ack the reset, or that
334 does not have a valid 0x57,0x57 signature can still use this
335 without having to recompile. Specifying an i/o address along
336 with an otherwise unused dev->mem_end value of "0xBAD" will
337 cause the driver to skip these parts of the probe. */
339 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
341 /* Reset card. Who knows what dain-bramaged state it was left in. */
344 unsigned long reset_start_time = jiffies;
346 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
347 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
349 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
350 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
352 pr_cont(" (warning: no reset ack)");
355 pr_cont(" not found (no reset ack).\n");
361 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
364 /* Read the 16 bytes of station address PROM.
365 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
366 We can't reliably read the SAPROM address without this.
367 (I learned the hard way!). */
369 struct {unsigned char value, offset; } program_seq[] =
371 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
372 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
373 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
375 {0x00, EN0_IMR}, /* Mask completion irq. */
377 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
378 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
381 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
383 {E8390_RREAD+E8390_START, E8390_CMD},
386 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
387 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
390 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
391 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
392 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
393 if (SA_prom[i] != SA_prom[i+1])
399 for (i = 0; i < 16; i++)
400 SA_prom[i] = SA_prom[i+i];
401 /* We must set the 8390 for word mode. */
402 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
403 start_page = NESM_START_PG;
406 * Realtek RTL8019AS datasheet says that the PSTOP register
407 * shouldn't exceed 0x60 in 8-bit mode.
408 * This chip can be identified by reading the signature from
409 * the remote byte count registers (otherwise write-only)...
411 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
412 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
413 inb(ioaddr + EN0_RCNTHI) == 0x70)
416 stop_page = NESM_STOP_PG;
418 start_page = NE1SM_START_PG;
419 stop_page = NE1SM_STOP_PG;
422 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 pr_cont(" not found (invalid signature %2.2x %2.2x).\n",
459 SA_prom[14], SA_prom[15]);
464 pr_cont(" 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);
480 if (ne_msg_enable & NETIF_MSG_PROBE)
481 pr_cont(" autoirq is %d", 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 pr_cont(" 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 pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
501 dev->base_addr = ioaddr;
503 for (i = 0; i < ETH_ALEN; i++) {
504 dev->dev_addr[i] = SA_prom[i];
507 pr_cont("%pM\n", dev->dev_addr);
509 ei_status.name = name;
510 ei_status.tx_start_page = start_page;
511 ei_status.stop_page = stop_page;
513 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
514 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
516 ei_status.rx_start_page = start_page + TX_PAGES;
517 #ifdef PACKETBUF_MEMSIZE
518 /* Allow the packet buffer size to be overridden by know-it-alls. */
519 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
522 ei_status.reset_8390 = &ne_reset_8390;
523 ei_status.block_input = &ne_block_input;
524 ei_status.block_output = &ne_block_output;
525 ei_status.get_8390_hdr = &ne_get_8390_hdr;
528 dev->netdev_ops = &eip_netdev_ops;
529 NS8390p_init(dev, 0);
531 ei_local->msg_enable = ne_msg_enable;
532 ret = register_netdev(dev);
535 netdev_info(dev, "%s found at %#lx, using IRQ %d.\n",
536 name, ioaddr, dev->irq);
540 free_irq(dev->irq, dev);
542 release_region(ioaddr, NE_IO_EXTENT);
546 /* Hard reset the card. This used to pause for the same period that a
547 8390 reset command required, but that shouldn't be necessary. */
549 static void ne_reset_8390(struct net_device *dev)
551 unsigned long reset_start_time = jiffies;
552 struct ei_device *ei_local = netdev_priv(dev);
554 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
556 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
557 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
560 ei_status.dmaing = 0;
562 /* This check _should_not_ be necessary, omit eventually. */
563 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
564 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
565 netdev_err(dev, "ne_reset_8390() did not complete.\n");
568 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
571 /* Grab the 8390 specific header. Similar to the block_input routine, but
572 we don't need to be concerned with ring wrap as the header will be at
573 the start of a page, so we optimize accordingly. */
575 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
577 int nic_base = dev->base_addr;
579 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
581 if (ei_status.dmaing)
583 netdev_err(dev, "DMAing conflict in ne_get_8390_hdr "
584 "[DMAstat:%d][irqlock:%d].\n",
585 ei_status.dmaing, ei_status.irqlock);
589 ei_status.dmaing |= 0x01;
590 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
591 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
592 outb_p(0, nic_base + EN0_RCNTHI);
593 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
594 outb_p(ring_page, nic_base + EN0_RSARHI);
595 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
597 if (ei_status.word16)
598 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
600 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
602 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
603 ei_status.dmaing &= ~0x01;
605 le16_to_cpus(&hdr->count);
608 /* Block input and output, similar to the Crynwr packet driver. If you
609 are porting to a new ethercard, look at the packet driver source for hints.
610 The NEx000 doesn't share the on-board packet memory -- you have to put
611 the packet out through the "remote DMA" dataport using outb. */
613 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
615 #ifdef NE_SANITY_CHECK
616 int xfer_count = count;
617 struct ei_device *ei_local = netdev_priv(dev);
619 int nic_base = dev->base_addr;
620 char *buf = skb->data;
622 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
623 if (ei_status.dmaing)
625 netdev_err(dev, "DMAing conflict in ne_block_input "
626 "[DMAstat:%d][irqlock:%d].\n",
627 ei_status.dmaing, ei_status.irqlock);
630 ei_status.dmaing |= 0x01;
631 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
632 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
633 outb_p(count >> 8, nic_base + EN0_RCNTHI);
634 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
635 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
636 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
637 if (ei_status.word16)
639 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
642 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
643 #ifdef NE_SANITY_CHECK
648 insb(NE_BASE + NE_DATAPORT, buf, count);
651 #ifdef NE_SANITY_CHECK
652 /* This was for the ALPHA version only, but enough people have
653 been encountering problems so it is still here. If you see
654 this message you either 1) have a slightly incompatible clone
655 or 2) have noise/speed problems with your bus. */
657 if (netif_msg_rx_status(ei_local))
659 /* DMA termination address check... */
660 int addr, tries = 20;
662 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
663 -- it's broken for Rx on some cards! */
664 int high = inb_p(nic_base + EN0_RSARHI);
665 int low = inb_p(nic_base + EN0_RSARLO);
666 addr = (high << 8) + low;
667 if (((ring_offset + xfer_count) & 0xff) == low)
669 } while (--tries > 0);
671 netdev_warn(dev, "RX transfer address mismatch,"
672 "%#4.4x (expected) vs. %#4.4x (actual).\n",
673 ring_offset + xfer_count, addr);
676 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
677 ei_status.dmaing &= ~0x01;
680 static void ne_block_output(struct net_device *dev, int count,
681 const unsigned char *buf, const int start_page)
683 int nic_base = NE_BASE;
684 unsigned long dma_start;
685 #ifdef NE_SANITY_CHECK
687 struct ei_device *ei_local = netdev_priv(dev);
690 /* Round the count up for word writes. Do we need to do this?
691 What effect will an odd byte count have on the 8390?
692 I should check someday. */
694 if (ei_status.word16 && (count & 0x01))
697 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
698 if (ei_status.dmaing)
700 netdev_err(dev, "DMAing conflict in ne_block_output."
701 "[DMAstat:%d][irqlock:%d]\n",
702 ei_status.dmaing, ei_status.irqlock);
705 ei_status.dmaing |= 0x01;
706 /* We should already be in page 0, but to be safe... */
707 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
709 #ifdef NE_SANITY_CHECK
714 /* Handle the read-before-write bug the same way as the
715 Crynwr packet driver -- the NatSemi method doesn't work.
716 Actually this doesn't always work either, but if you have
717 problems with your NEx000 this is better than nothing! */
719 outb_p(0x42, nic_base + EN0_RCNTLO);
720 outb_p(0x00, nic_base + EN0_RCNTHI);
721 outb_p(0x42, nic_base + EN0_RSARLO);
722 outb_p(0x00, nic_base + EN0_RSARHI);
723 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
724 /* Make certain that the dummy read has occurred. */
728 outb_p(ENISR_RDC, nic_base + EN0_ISR);
730 /* Now the normal output. */
731 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
732 outb_p(count >> 8, nic_base + EN0_RCNTHI);
733 outb_p(0x00, nic_base + EN0_RSARLO);
734 outb_p(start_page, nic_base + EN0_RSARHI);
736 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
737 if (ei_status.word16) {
738 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
740 outsb(NE_BASE + NE_DATAPORT, buf, count);
745 #ifdef NE_SANITY_CHECK
746 /* This was for the ALPHA version only, but enough people have
747 been encountering problems so it is still here. */
749 if (netif_msg_tx_queued(ei_local))
751 /* DMA termination address check... */
752 int addr, tries = 20;
754 int high = inb_p(nic_base + EN0_RSARHI);
755 int low = inb_p(nic_base + EN0_RSARLO);
756 addr = (high << 8) + low;
757 if ((start_page << 8) + count == addr)
759 } while (--tries > 0);
763 netdev_warn(dev, "Tx packet transfer address mismatch,"
764 "%#4.4x (expected) vs. %#4.4x (actual).\n",
765 (start_page << 8) + count, addr);
772 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
773 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
774 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
776 NS8390p_init(dev, 1);
780 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
781 ei_status.dmaing &= ~0x01;
784 static int __init ne_drv_probe(struct platform_device *pdev)
786 struct net_device *dev;
787 int err, this_dev = pdev->id;
788 struct resource *res;
790 dev = alloc_eip_netdev();
794 /* ne.c doesn't populate resources in platform_device, but
795 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
798 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
800 dev->base_addr = res->start;
801 dev->irq = platform_get_irq(pdev, 0);
803 if (this_dev < 0 || this_dev >= MAX_NE_CARDS) {
807 dev->base_addr = io[this_dev];
808 dev->irq = irq[this_dev];
809 dev->mem_end = bad[this_dev];
811 SET_NETDEV_DEV(dev, &pdev->dev);
812 err = do_ne_probe(dev);
817 platform_set_drvdata(pdev, dev);
819 /* Update with any values found by probing, don't update if
820 * resources were specified.
823 io[this_dev] = dev->base_addr;
824 irq[this_dev] = dev->irq;
829 static int ne_drv_remove(struct platform_device *pdev)
831 struct net_device *dev = platform_get_drvdata(pdev);
834 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
835 netif_device_detach(dev);
836 unregister_netdev(dev);
838 pnp_device_detach(idev);
839 /* Careful ne_drv_remove can be called twice, once from
840 * the platform_driver.remove and again when the
841 * platform_device is being removed.
844 free_irq(dev->irq, dev);
845 release_region(dev->base_addr, NE_IO_EXTENT);
851 /* Remove unused devices or all if true. */
852 static void ne_loop_rm_unreg(int all)
855 struct platform_device *pdev;
856 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
857 pdev = pdev_ne[this_dev];
858 /* No network device == unused */
859 if (pdev && (!platform_get_drvdata(pdev) || all)) {
861 platform_device_unregister(pdev);
862 pdev_ne[this_dev] = NULL;
868 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
870 struct net_device *dev = platform_get_drvdata(pdev);
872 if (netif_running(dev)) {
873 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
874 netif_device_detach(dev);
881 static int ne_drv_resume(struct platform_device *pdev)
883 struct net_device *dev = platform_get_drvdata(pdev);
885 if (netif_running(dev)) {
886 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
890 NS8390p_init(dev, 1);
891 netif_device_attach(dev);
896 #define ne_drv_suspend NULL
897 #define ne_drv_resume NULL
900 static struct platform_driver ne_driver = {
901 .remove = ne_drv_remove,
902 .suspend = ne_drv_suspend,
903 .resume = ne_drv_resume,
909 static void __init ne_add_devices(void)
912 struct platform_device *pdev;
914 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
915 if (pdev_ne[this_dev])
917 pdev = platform_device_register_simple(
918 DRV_NAME, this_dev, NULL, 0);
921 pdev_ne[this_dev] = pdev;
925 static int __init ne_init(void)
929 if (IS_MODULE(CONFIG_NE2000))
932 retval = platform_driver_probe(&ne_driver, ne_drv_probe);
934 if (IS_MODULE(CONFIG_NE2000) && retval) {
936 pr_notice("ne.c: You must supply \"io=0xNNN\""
937 " value(s) for ISA cards.\n");
942 /* Unregister unused platform_devices. */
946 module_init(ne_init);
948 #if !defined(MODULE) && defined(CONFIG_NETDEV_LEGACY_INIT)
949 struct net_device * __init ne_probe(int unit)
952 struct net_device *dev;
954 /* Find an empty slot, that is no net_device and zero io port. */
956 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
958 if (++this_dev == MAX_NE_CARDS)
959 return ERR_PTR(-ENOMEM);
962 /* Get irq, io from kernel command line */
963 dev = alloc_eip_netdev();
965 return ERR_PTR(-ENOMEM);
967 sprintf(dev->name, "eth%d", unit);
968 netdev_boot_setup_check(dev);
970 io[this_dev] = dev->base_addr;
971 irq[this_dev] = dev->irq;
972 bad[this_dev] = dev->mem_end;
978 /* return the first device found */
979 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
980 if (pdev_ne[this_dev]) {
981 dev = platform_get_drvdata(pdev_ne[this_dev]);
987 return ERR_PTR(-ENODEV);
991 static void __exit ne_exit(void)
993 platform_driver_unregister(&ne_driver);
996 module_exit(ne_exit);