1/* ne2.c: A NE/2 Ethernet Driver for Linux. */ 2/* 3 Based on the NE2000 driver written by Donald Becker (1992-94). 4 modified by Wim Dumon (Apr 1996) 5 6 This software may be used and distributed according to the terms 7 of the GNU General Public License, incorporated herein by reference. 8 9 The author may be reached as wimpie@linux.cc.kuleuven.ac.be 10 11 Currently supported: NE/2 12 This patch was never tested on other MCA-ethernet adapters, but it 13 might work. Just give it a try and let me know if you have problems. 14 Also mail me if it really works, please! 15 16 Changelog: 17 Mon Feb 3 16:26:02 MET 1997 18 - adapted the driver to work with the 2.1.25 kernel 19 - multiple ne2 support (untested) 20 - module support (untested) 21 22 Fri Aug 28 00:18:36 CET 1998 (David Weinehall) 23 - fixed a few minor typos 24 - made the MODULE_PARM conditional (it only works with the v2.1.x kernels) 25 - fixed the module support (Now it's working...) 26 27 Mon Sep 7 19:01:44 CET 1998 (David Weinehall) 28 - added support for Arco Electronics AE/2-card (experimental) 29 30 Mon Sep 14 09:53:42 CET 1998 (David Weinehall) 31 - added support for Compex ENET-16MC/P (experimental) 32 33 Tue Sep 15 16:21:12 CET 1998 (David Weinehall, Magnus Jonsson, Tomas Ogren) 34 - Miscellaneous bugfixes 35 36 Tue Sep 19 16:21:12 CET 1998 (Magnus Jonsson) 37 - Cleanup 38 39 Wed Sep 23 14:33:34 CET 1998 (David Weinehall) 40 - Restructuring and rewriting for v2.1.x compliance 41 42 Wed Oct 14 17:19:21 CET 1998 (David Weinehall) 43 - Added code that unregisters irq and proc-info 44 - Version# bump 45 46 Mon Nov 16 15:28:23 CET 1998 (Wim Dumon) 47 - pass 'dev' as last parameter of request_irq in stead of 'NULL' 48 49 Wed Feb 7 21:24:00 CET 2001 (Alfred Arnold) 50 - added support for the D-Link DE-320CT 51 52 * WARNING 53 ------- 54 This is alpha-test software. It is not guaranteed to work. As a 55 matter of fact, I'm quite sure there are *LOTS* of bugs in here. I 56 would like to hear from you if you use this driver, even if it works. 57 If it doesn't work, be sure to send me a mail with the problems ! 58*/ 59 60static const char *version = "ne2.c:v0.91 Nov 16 1998 Wim Dumon <wimpie@kotnet.org>\n"; 61 62#include <linux/module.h> 63#include <linux/kernel.h> 64#include <linux/types.h> 65#include <linux/fcntl.h> 66#include <linux/interrupt.h> 67#include <linux/ioport.h> 68#include <linux/in.h> 69#include <linux/string.h> 70#include <linux/errno.h> 71#include <linux/init.h> 72#include <linux/mca-legacy.h> 73#include <linux/netdevice.h> 74#include <linux/etherdevice.h> 75#include <linux/skbuff.h> 76#include <linux/bitops.h> 77#include <linux/jiffies.h> 78 79#include <asm/system.h> 80#include <asm/io.h> 81#include <asm/dma.h> 82 83#include "8390.h" 84 85#define DRV_NAME "ne2" 86 87/* Some defines that people can play with if so inclined. */ 88 89/* Do we perform extra sanity checks on stuff ? */ 90/* #define NE_SANITY_CHECK */ 91 92/* Do we implement the read before write bugfix ? */ 93/* #define NE_RW_BUGFIX */ 94 95/* Do we have a non std. amount of memory? (in units of 256 byte pages) */ 96/* #define PACKETBUF_MEMSIZE 0x40 */ 97 98 99/* ---- No user-serviceable parts below ---- */ 100 101#define NE_BASE (dev->base_addr) 102#define NE_CMD 0x00 103#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ 104#define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */ 105#define NE_IO_EXTENT 0x30 106 107#define NE1SM_START_PG 0x20 /* First page of TX buffer */ 108#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 109#define NESM_START_PG 0x40 /* First page of TX buffer */ 110#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 111 112/* From the .ADF file: */ 113static unsigned int addresses[7] __initdata = 114 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0}; 115static int irqs[4] __initdata = {3, 4, 5, 9}; 116 117/* From the D-Link ADF file: */ 118static unsigned int dlink_addresses[4] __initdata = 119 {0x300, 0x320, 0x340, 0x360}; 120static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15}; 121 122struct ne2_adapters_t { 123 unsigned int id; 124 char *name; 125}; 126 127static struct ne2_adapters_t ne2_adapters[] __initdata = { 128 { 0x6354, "Arco Ethernet Adapter AE/2" }, 129 { 0x70DE, "Compex ENET-16 MC/P" }, 130 { 0x7154, "Novell Ethernet Adapter NE/2" }, 131 { 0x56ea, "D-Link DE-320CT" }, 132 { 0x0000, NULL } 133}; 134 135extern int netcard_probe(struct net_device *dev); 136 137static int ne2_probe1(struct net_device *dev, int slot); 138 139static void ne_reset_8390(struct net_device *dev); 140static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 141 int ring_page); 142static void ne_block_input(struct net_device *dev, int count, 143 struct sk_buff *skb, int ring_offset); 144static void ne_block_output(struct net_device *dev, const int count, 145 const unsigned char *buf, const int start_page); 146 147 148/* 149 * special code to read the DE-320's MAC address EEPROM. In contrast to a 150 * standard NE design, this is a serial EEPROM (93C46) that has to be read 151 * bit by bit. The EEPROM cotrol port at base + 0x1e has the following 152 * layout: 153 * 154 * Bit 0 = Data out (read from EEPROM) 155 * Bit 1 = Data in (write to EEPROM) 156 * Bit 2 = Clock 157 * Bit 3 = Chip Select 158 * Bit 7 = ~50 kHz clock for defined delays 159 * 160 */ 161 162static void __init dlink_put_eeprom(unsigned char value, unsigned int addr) 163{ 164 int z; 165 unsigned char v1, v2; 166 167 /* write the value to the NIC EEPROM register */ 168 169 outb(value, addr + 0x1e); 170 171 /* now wait the clock line to toggle twice. Effectively, we are 172 waiting (at least) for one clock cycle */ 173 174 for (z = 0; z < 2; z++) { 175 do { 176 v1 = inb(addr + 0x1e); 177 v2 = inb(addr + 0x1e); 178 } 179 while (!((v1 ^ v2) & 0x80)); 180 } 181} 182 183static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr) 184{ 185 /* shift data bit into correct position */ 186 187 bit = bit << 1; 188 189 /* write value, keep clock line high for two cycles */ 190 191 dlink_put_eeprom(0x09 | bit, addr); 192 dlink_put_eeprom(0x0d | bit, addr); 193 dlink_put_eeprom(0x0d | bit, addr); 194 dlink_put_eeprom(0x09 | bit, addr); 195} 196 197static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr) 198{ 199 int z; 200 201 /* adjust bits so that they are left-aligned in a 16-bit-word */ 202 203 value = value << (16 - len); 204 205 /* shift bits out to the EEPROM */ 206 207 for (z = 0; z < len; z++) { 208 dlink_send_eeprom_bit((value & 0x8000) >> 15, addr); 209 value = value << 1; 210 } 211} 212 213static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr) 214{ 215 int z; 216 unsigned int value = 0; 217 218 /* pull the CS line low for a moment. This resets the EEPROM- 219 internal logic, and makes it ready for a new command. */ 220 221 dlink_put_eeprom(0x01, addr); 222 dlink_put_eeprom(0x09, addr); 223 224 /* send one start bit, read command (1 - 0), plus the address to 225 the EEPROM */ 226 227 dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr); 228 229 /* get the data word. We clock by sending 0s to the EEPROM, which 230 get ignored during the read process */ 231 232 for (z = 0; z < 16; z++) { 233 dlink_send_eeprom_bit(0, addr); 234 value = (value << 1) | (inb(addr + 0x1e) & 0x01); 235 } 236 237 return value; 238} 239 240/* 241 * Note that at boot, this probe only picks up one card at a time. 242 */ 243 244static int __init do_ne2_probe(struct net_device *dev) 245{ 246 static int current_mca_slot = -1; 247 int i; 248 int adapter_found = 0; 249 250 /* Do not check any supplied i/o locations. 251 POS registers usually don't fail :) */ 252 253 /* MCA cards have POS registers. 254 Autodetecting MCA cards is extremely simple. 255 Just search for the card. */ 256 257 for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) { 258 current_mca_slot = 259 mca_find_unused_adapter(ne2_adapters[i].id, 0); 260 261 if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) { 262 int res; 263 mca_set_adapter_name(current_mca_slot, 264 ne2_adapters[i].name); 265 mca_mark_as_used(current_mca_slot); 266 267 res = ne2_probe1(dev, current_mca_slot); 268 if (res) 269 mca_mark_as_unused(current_mca_slot); 270 return res; 271 } 272 } 273 return -ENODEV; 274} 275 276#ifndef MODULE 277struct net_device * __init ne2_probe(int unit) 278{ 279 struct net_device *dev = alloc_eip_netdev(); 280 int err; 281 282 if (!dev) 283 return ERR_PTR(-ENOMEM); 284 285 sprintf(dev->name, "eth%d", unit); 286 netdev_boot_setup_check(dev); 287 288 err = do_ne2_probe(dev); 289 if (err) 290 goto out; 291 return dev; 292out: 293 free_netdev(dev); 294 return ERR_PTR(err); 295} 296#endif 297 298static int ne2_procinfo(char *buf, int slot, struct net_device *dev) 299{ 300 int len=0; 301 302 len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" ); 303 len += sprintf(buf+len, "Driver written by Wim Dumon "); 304 len += sprintf(buf+len, "<wimpie@kotnet.org>\n"); 305 len += sprintf(buf+len, "Modified by "); 306 len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n"); 307 len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n"); 308 len += sprintf(buf+len, "Based on the original NE2000 drivers\n" ); 309 len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr); 310 len += sprintf(buf+len, "IRQ : %d\n", dev->irq); 311 len += sprintf(buf+len, "HW addr : %pM\n", dev->dev_addr); 312 313 return len; 314} 315 316static int __init ne2_probe1(struct net_device *dev, int slot) 317{ 318 int i, base_addr, irq, retval; 319 unsigned char POS; 320 unsigned char SA_prom[32]; 321 const char *name = "NE/2"; 322 int start_page, stop_page; 323 static unsigned version_printed; 324 325 if (ei_debug && version_printed++ == 0) 326 printk(version); 327 328 printk("NE/2 ethercard found in slot %d:", slot); 329 330 /* Read base IO and IRQ from the POS-registers */ 331 POS = mca_read_stored_pos(slot, 2); 332 if(!(POS % 2)) { 333 printk(" disabled.\n"); 334 return -ENODEV; 335 } 336 337 /* handle different POS register structure for D-Link card */ 338 339 if (mca_read_stored_pos(slot, 0) == 0xea) { 340 base_addr = dlink_addresses[(POS >> 5) & 0x03]; 341 irq = dlink_irqs[(POS >> 2) & 0x07]; 342 } 343 else { 344 i = (POS & 0xE)>>1; 345 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0" 346 " en zou het moeten werken -> %d\n", i); 347 The above line was for remote testing, thanx to sdog ... */ 348 base_addr = addresses[i - 1]; 349 irq = irqs[(POS & 0x60)>>5]; 350 } 351 352 if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME)) 353 return -EBUSY; 354 355#ifdef DEBUG 356 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS, 357 base_addr, irq); 358#endif 359 360#ifndef CRYNWR_WAY 361 /* Reset the card the way they do it in the Crynwr packet driver */ 362 for (i=0; i<8; i++) 363 outb(0x0, base_addr + NE_RESET); 364 inb(base_addr + NE_RESET); 365 outb(0x21, base_addr + NE_CMD); 366 if (inb(base_addr + NE_CMD) != 0x21) { 367 printk("NE/2 adapter not responding\n"); 368 retval = -ENODEV; 369 goto out; 370 } 371 372 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose 373 my RAM is okay. Suppose your memory is broken. Then this test 374 should fail and you won't be able to use your card. But if I do not 375 test, you won't be able to use your card, neither. So this test 376 won't help you. */ 377 378#else /* _I_ never tested it this way .. Go ahead and try ...*/ 379 /* Reset card. Who knows what dain-bramaged state it was left in. */ 380 { 381 unsigned long reset_start_time = jiffies; 382 383 /* DON'T change these to inb_p/outb_p or reset will fail on 384 clones.. */ 385 outb(inb(base_addr + NE_RESET), base_addr + NE_RESET); 386 387 while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0) 388 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 389 printk(" not found (no reset ack).\n"); 390 retval = -ENODEV; 391 goto out; 392 } 393 394 outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */ 395 } 396#endif 397 398 399 /* Read the 16 bytes of station address PROM. 400 We must first initialize registers, similar to 401 NS8390p_init(eifdev, 0). 402 We can't reliably read the SAPROM address without this. 403 (I learned the hard way!). */ 404 { 405 struct { 406 unsigned char value, offset; 407 } program_seq[] = { 408 /* Select page 0 */ 409 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, 410 {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */ 411 {0x00, EN0_RCNTLO}, /* Clear the count regs. */ 412 {0x00, EN0_RCNTHI}, 413 {0x00, EN0_IMR}, /* Mask completion irq. */ 414 {0xFF, EN0_ISR}, 415 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ 416 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ 417 {32, EN0_RCNTLO}, 418 {0x00, EN0_RCNTHI}, 419 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ 420 {0x00, EN0_RSARHI}, 421 {E8390_RREAD+E8390_START, E8390_CMD}, 422 }; 423 424 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 425 outb_p(program_seq[i].value, base_addr + 426 program_seq[i].offset); 427 428 } 429 for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) { 430 SA_prom[i] = inb(base_addr + NE_DATAPORT); 431 } 432 433 /* I don't know whether the previous sequence includes the general 434 board reset procedure, so better don't omit it and just overwrite 435 the garbage read from a DE-320 with correct stuff. */ 436 437 if (mca_read_stored_pos(slot, 0) == 0xea) { 438 unsigned int v; 439 440 for (i = 0; i < 3; i++) { 441 v = dlink_get_eeprom(i, base_addr); 442 SA_prom[(i << 1) ] = v & 0xff; 443 SA_prom[(i << 1) + 1] = (v >> 8) & 0xff; 444 } 445 } 446 447 start_page = NESM_START_PG; 448 stop_page = NESM_STOP_PG; 449 450 dev->irq=irq; 451 452 /* Snarf the interrupt now. There's no point in waiting since we cannot 453 share and the board will usually be enabled. */ 454 retval = request_irq(dev->irq, eip_interrupt, 0, DRV_NAME, dev); 455 if (retval) { 456 printk (" unable to get IRQ %d (irqval=%d).\n", 457 dev->irq, retval); 458 goto out; 459 } 460 461 dev->base_addr = base_addr; 462 463 for(i = 0; i < ETHER_ADDR_LEN; i++) 464 dev->dev_addr[i] = SA_prom[i]; 465 466 printk(" %pM\n", dev->dev_addr); 467 468 printk("%s: %s found at %#x, using IRQ %d.\n", 469 dev->name, name, base_addr, dev->irq); 470 471 mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev); 472 473 ei_status.name = name; 474 ei_status.tx_start_page = start_page; 475 ei_status.stop_page = stop_page; 476 ei_status.word16 = (2 == 2); 477 478 ei_status.rx_start_page = start_page + TX_PAGES; 479#ifdef PACKETBUF_MEMSIZE 480 /* Allow the packet buffer size to be overridden by know-it-alls. */ 481 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; 482#endif 483 484 ei_status.reset_8390 = &ne_reset_8390; 485 ei_status.block_input = &ne_block_input; 486 ei_status.block_output = &ne_block_output; 487 ei_status.get_8390_hdr = &ne_get_8390_hdr; 488 489 ei_status.priv = slot; 490 491 dev->netdev_ops = &eip_netdev_ops; 492 NS8390p_init(dev, 0); 493 494 retval = register_netdev(dev); 495 if (retval) 496 goto out1; 497 return 0; 498out1: 499 mca_set_adapter_procfn( ei_status.priv, NULL, NULL); 500 free_irq(dev->irq, dev); 501out: 502 release_region(base_addr, NE_IO_EXTENT); 503 return retval; 504} 505 506/* Hard reset the card. This used to pause for the same period that a 507 8390 reset command required, but that shouldn't be necessary. */ 508static void ne_reset_8390(struct net_device *dev) 509{ 510 unsigned long reset_start_time = jiffies; 511 512 if (ei_debug > 1) 513 printk("resetting the 8390 t=%ld...", jiffies); 514 515 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ 516 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 517 518 ei_status.txing = 0; 519 ei_status.dmaing = 0; 520 521 /* This check _should_not_ be necessary, omit eventually. */ 522 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) 523 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 524 printk("%s: ne_reset_8390() did not complete.\n", 525 dev->name); 526 break; 527 } 528 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ 529} 530 531/* Grab the 8390 specific header. Similar to the block_input routine, but 532 we don't need to be concerned with ring wrap as the header will be at 533 the start of a page, so we optimize accordingly. */ 534 535static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 536 int ring_page) 537{ 538 539 int nic_base = dev->base_addr; 540 541 /* This *shouldn't* happen. 542 If it does, it's the last thing you'll see */ 543 if (ei_status.dmaing) { 544 printk("%s: DMAing conflict in ne_get_8390_hdr " 545 "[DMAstat:%d][irqlock:%d].\n", 546 dev->name, ei_status.dmaing, ei_status.irqlock); 547 return; 548 } 549 550 ei_status.dmaing |= 0x01; 551 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 552 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 553 outb_p(0, nic_base + EN0_RCNTHI); 554 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ 555 outb_p(ring_page, nic_base + EN0_RSARHI); 556 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 557 558 if (ei_status.word16) 559 insw(NE_BASE + NE_DATAPORT, hdr, 560 sizeof(struct e8390_pkt_hdr)>>1); 561 else 562 insb(NE_BASE + NE_DATAPORT, hdr, 563 sizeof(struct e8390_pkt_hdr)); 564 565 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 566 ei_status.dmaing &= ~0x01; 567} 568 569/* Block input and output, similar to the Crynwr packet driver. If you 570 are porting to a new ethercard, look at the packet driver source for 571 hints. The NEx000 doesn't share the on-board packet memory -- you have 572 to put the packet out through the "remote DMA" dataport using outb. */ 573 574static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, 575 int ring_offset) 576{ 577#ifdef NE_SANITY_CHECK 578 int xfer_count = count; 579#endif 580 int nic_base = dev->base_addr; 581 char *buf = skb->data; 582 583 /* This *shouldn't* happen. 584 If it does, it's the last thing you'll see */ 585 if (ei_status.dmaing) { 586 printk("%s: DMAing conflict in ne_block_input " 587 "[DMAstat:%d][irqlock:%d].\n", 588 dev->name, ei_status.dmaing, ei_status.irqlock); 589 return; 590 } 591 ei_status.dmaing |= 0x01; 592 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 593 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 594 outb_p(count >> 8, nic_base + EN0_RCNTHI); 595 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); 596 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); 597 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 598 if (ei_status.word16) { 599 insw(NE_BASE + NE_DATAPORT,buf,count>>1); 600 if (count & 0x01) { 601 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 602#ifdef NE_SANITY_CHECK 603 xfer_count++; 604#endif 605 } 606 } else { 607 insb(NE_BASE + NE_DATAPORT, buf, count); 608 } 609 610#ifdef NE_SANITY_CHECK 611 /* This was for the ALPHA version only, but enough people have 612 been encountering problems so it is still here. If you see 613 this message you either 1) have a slightly incompatible clone 614 or 2) have noise/speed problems with your bus. */ 615 if (ei_debug > 1) { /* DMA termination address check... */ 616 int addr, tries = 20; 617 do { 618 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here 619 -- it's broken for Rx on some cards! */ 620 int high = inb_p(nic_base + EN0_RSARHI); 621 int low = inb_p(nic_base + EN0_RSARLO); 622 addr = (high << 8) + low; 623 if (((ring_offset + xfer_count) & 0xff) == low) 624 break; 625 } while (--tries > 0); 626 if (tries <= 0) 627 printk("%s: RX transfer address mismatch," 628 "%#4.4x (expected) vs. %#4.4x (actual).\n", 629 dev->name, ring_offset + xfer_count, addr); 630 } 631#endif 632 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 633 ei_status.dmaing &= ~0x01; 634} 635 636static void ne_block_output(struct net_device *dev, int count, 637 const unsigned char *buf, const int start_page) 638{ 639 int nic_base = NE_BASE; 640 unsigned long dma_start; 641#ifdef NE_SANITY_CHECK 642 int retries = 0; 643#endif 644 645 /* Round the count up for word writes. Do we need to do this? 646 What effect will an odd byte count have on the 8390? 647 I should check someday. */ 648 if (ei_status.word16 && (count & 0x01)) 649 count++; 650 651 /* This *shouldn't* happen. 652 If it does, it's the last thing you'll see */ 653 if (ei_status.dmaing) { 654 printk("%s: DMAing conflict in ne_block_output." 655 "[DMAstat:%d][irqlock:%d]\n", 656 dev->name, ei_status.dmaing, ei_status.irqlock); 657 return; 658 } 659 ei_status.dmaing |= 0x01; 660 /* We should already be in page 0, but to be safe... */ 661 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 662 663#ifdef NE_SANITY_CHECK 664retry: 665#endif 666 667#ifdef NE8390_RW_BUGFIX 668 /* Handle the read-before-write bug the same way as the 669 Crynwr packet driver -- the NatSemi method doesn't work. 670 Actually this doesn't always work either, but if you have 671 problems with your NEx000 this is better than nothing! */ 672 outb_p(0x42, nic_base + EN0_RCNTLO); 673 outb_p(0x00, nic_base + EN0_RCNTHI); 674 outb_p(0x42, nic_base + EN0_RSARLO); 675 outb_p(0x00, nic_base + EN0_RSARHI); 676 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 677 /* Make certain that the dummy read has occurred. */ 678 SLOW_DOWN_IO; 679 SLOW_DOWN_IO; 680 SLOW_DOWN_IO; 681#endif 682 683 outb_p(ENISR_RDC, nic_base + EN0_ISR); 684 685 /* Now the normal output. */ 686 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 687 outb_p(count >> 8, nic_base + EN0_RCNTHI); 688 outb_p(0x00, nic_base + EN0_RSARLO); 689 outb_p(start_page, nic_base + EN0_RSARHI); 690 691 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 692 if (ei_status.word16) { 693 outsw(NE_BASE + NE_DATAPORT, buf, count>>1); 694 } else { 695 outsb(NE_BASE + NE_DATAPORT, buf, count); 696 } 697 698 dma_start = jiffies; 699 700#ifdef NE_SANITY_CHECK 701 /* This was for the ALPHA version only, but enough people have 702 been encountering problems so it is still here. */ 703 704 if (ei_debug > 1) { /* DMA termination address check... */ 705 int addr, tries = 20; 706 do { 707 int high = inb_p(nic_base + EN0_RSARHI); 708 int low = inb_p(nic_base + EN0_RSARLO); 709 addr = (high << 8) + low; 710 if ((start_page << 8) + count == addr) 711 break; 712 } while (--tries > 0); 713 if (tries <= 0) { 714 printk("%s: Tx packet transfer address mismatch," 715 "%#4.4x (expected) vs. %#4.4x (actual).\n", 716 dev->name, (start_page << 8) + count, addr); 717 if (retries++ == 0) 718 goto retry; 719 } 720 } 721#endif 722 723 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) 724 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ 725 printk("%s: timeout waiting for Tx RDC.\n", dev->name); 726 ne_reset_8390(dev); 727 NS8390p_init(dev, 1); 728 break; 729 } 730 731 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 732 ei_status.dmaing &= ~0x01; 733} 734 735 736#ifdef MODULE 737#define MAX_NE_CARDS 4 /* Max number of NE cards per module */ 738static struct net_device *dev_ne[MAX_NE_CARDS]; 739static int io[MAX_NE_CARDS]; 740static int irq[MAX_NE_CARDS]; 741static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */ 742MODULE_LICENSE("GPL"); 743 744module_param_array(io, int, NULL, 0); 745module_param_array(irq, int, NULL, 0); 746module_param_array(bad, int, NULL, 0); 747MODULE_PARM_DESC(io, "(ignored)"); 748MODULE_PARM_DESC(irq, "(ignored)"); 749MODULE_PARM_DESC(bad, "(ignored)"); 750 751/* Module code fixed by David Weinehall */ 752 753int __init init_module(void) 754{ 755 struct net_device *dev; 756 int this_dev, found = 0; 757 758 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 759 dev = alloc_eip_netdev(); 760 if (!dev) 761 break; 762 dev->irq = irq[this_dev]; 763 dev->mem_end = bad[this_dev]; 764 dev->base_addr = io[this_dev]; 765 if (do_ne2_probe(dev) == 0) { 766 dev_ne[found++] = dev; 767 continue; 768 } 769 free_netdev(dev); 770 break; 771 } 772 if (found) 773 return 0; 774 printk(KERN_WARNING "ne2.c: No NE/2 card found\n"); 775 return -ENXIO; 776} 777 778static void cleanup_card(struct net_device *dev) 779{ 780 mca_mark_as_unused(ei_status.priv); 781 mca_set_adapter_procfn( ei_status.priv, NULL, NULL); 782 free_irq(dev->irq, dev); 783 release_region(dev->base_addr, NE_IO_EXTENT); 784} 785 786void __exit cleanup_module(void) 787{ 788 int this_dev; 789 790 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 791 struct net_device *dev = dev_ne[this_dev]; 792 if (dev) { 793 unregister_netdev(dev); 794 cleanup_card(dev); 795 free_netdev(dev); 796 } 797 } 798} 799#endif /* MODULE */ 800