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/slab.h> 70#include <linux/string.h> 71#include <linux/errno.h> 72#include <linux/init.h> 73#include <linux/mca-legacy.h> 74#include <linux/netdevice.h> 75#include <linux/etherdevice.h> 76#include <linux/skbuff.h> 77#include <linux/bitops.h> 78#include <linux/jiffies.h> 79 80#include <asm/system.h> 81#include <asm/io.h> 82#include <asm/dma.h> 83 84#include "8390.h" 85 86#define DRV_NAME "ne2" 87 88/* Some defines that people can play with if so inclined. */ 89 90/* Do we perform extra sanity checks on stuff ? */ 91/* #define NE_SANITY_CHECK */ 92 93/* Do we implement the read before write bugfix ? */ 94/* #define NE_RW_BUGFIX */ 95 96/* Do we have a non std. amount of memory? (in units of 256 byte pages) */ 97/* #define PACKETBUF_MEMSIZE 0x40 */ 98 99 100/* ---- No user-serviceable parts below ---- */ 101 102#define NE_BASE (dev->base_addr) 103#define NE_CMD 0x00 104#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ 105#define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */ 106#define NE_IO_EXTENT 0x30 107 108#define NE1SM_START_PG 0x20 /* First page of TX buffer */ 109#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 110#define NESM_START_PG 0x40 /* First page of TX buffer */ 111#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 112 113/* From the .ADF file: */ 114static unsigned int addresses[7] __initdata = 115 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0}; 116static int irqs[4] __initdata = {3, 4, 5, 9}; 117 118/* From the D-Link ADF file: */ 119static unsigned int dlink_addresses[4] __initdata = 120 {0x300, 0x320, 0x340, 0x360}; 121static int dlink_irqs[8] __initdata = {3, 4, 5, 9, 10, 11, 14, 15}; 122 123struct ne2_adapters_t { 124 unsigned int id; 125 char *name; 126}; 127 128static struct ne2_adapters_t ne2_adapters[] __initdata = { 129 { 0x6354, "Arco Ethernet Adapter AE/2" }, 130 { 0x70DE, "Compex ENET-16 MC/P" }, 131 { 0x7154, "Novell Ethernet Adapter NE/2" }, 132 { 0x56ea, "D-Link DE-320CT" }, 133 { 0x0000, NULL } 134}; 135 136extern int netcard_probe(struct net_device *dev); 137 138static int ne2_probe1(struct net_device *dev, int slot); 139 140static int ne_open(struct net_device *dev); 141static int ne_close(struct net_device *dev); 142 143static void ne_reset_8390(struct net_device *dev); 144static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 145 int ring_page); 146static void ne_block_input(struct net_device *dev, int count, 147 struct sk_buff *skb, int ring_offset); 148static void ne_block_output(struct net_device *dev, const int count, 149 const unsigned char *buf, const int start_page); 150 151 152/* 153 * special code to read the DE-320's MAC address EEPROM. In contrast to a 154 * standard NE design, this is a serial EEPROM (93C46) that has to be read 155 * bit by bit. The EEPROM cotrol port at base + 0x1e has the following 156 * layout: 157 * 158 * Bit 0 = Data out (read from EEPROM) 159 * Bit 1 = Data in (write to EEPROM) 160 * Bit 2 = Clock 161 * Bit 3 = Chip Select 162 * Bit 7 = ~50 kHz clock for defined delays 163 * 164 */ 165 166static void __init dlink_put_eeprom(unsigned char value, unsigned int addr) 167{ 168 int z; 169 unsigned char v1, v2; 170 171 /* write the value to the NIC EEPROM register */ 172 173 outb(value, addr + 0x1e); 174 175 /* now wait the clock line to toggle twice. Effectively, we are 176 waiting (at least) for one clock cycle */ 177 178 for (z = 0; z < 2; z++) { 179 do { 180 v1 = inb(addr + 0x1e); 181 v2 = inb(addr + 0x1e); 182 } 183 while (!((v1 ^ v2) & 0x80)); 184 } 185} 186 187static void __init dlink_send_eeprom_bit(unsigned int bit, unsigned int addr) 188{ 189 /* shift data bit into correct position */ 190 191 bit = bit << 1; 192 193 /* write value, keep clock line high for two cycles */ 194 195 dlink_put_eeprom(0x09 | bit, addr); 196 dlink_put_eeprom(0x0d | bit, addr); 197 dlink_put_eeprom(0x0d | bit, addr); 198 dlink_put_eeprom(0x09 | bit, addr); 199} 200 201static void __init dlink_send_eeprom_word(unsigned int value, unsigned int len, unsigned int addr) 202{ 203 int z; 204 205 /* adjust bits so that they are left-aligned in a 16-bit-word */ 206 207 value = value << (16 - len); 208 209 /* shift bits out to the EEPROM */ 210 211 for (z = 0; z < len; z++) { 212 dlink_send_eeprom_bit((value & 0x8000) >> 15, addr); 213 value = value << 1; 214 } 215} 216 217static unsigned int __init dlink_get_eeprom(unsigned int eeaddr, unsigned int addr) 218{ 219 int z; 220 unsigned int value = 0; 221 222 /* pull the CS line low for a moment. This resets the EEPROM- 223 internal logic, and makes it ready for a new command. */ 224 225 dlink_put_eeprom(0x01, addr); 226 dlink_put_eeprom(0x09, addr); 227 228 /* send one start bit, read command (1 - 0), plus the address to 229 the EEPROM */ 230 231 dlink_send_eeprom_word(0x0180 | (eeaddr & 0x3f), 9, addr); 232 233 /* get the data word. We clock by sending 0s to the EEPROM, which 234 get ignored during the read process */ 235 236 for (z = 0; z < 16; z++) { 237 dlink_send_eeprom_bit(0, addr); 238 value = (value << 1) | (inb(addr + 0x1e) & 0x01); 239 } 240 241 return value; 242} 243 244/* 245 * Note that at boot, this probe only picks up one card at a time. 246 */ 247 248static int __init do_ne2_probe(struct net_device *dev) 249{ 250 static int current_mca_slot = -1; 251 int i; 252 int adapter_found = 0; 253 254 SET_MODULE_OWNER(dev); 255 256 /* Do not check any supplied i/o locations. 257 POS registers usually don't fail :) */ 258 259 /* MCA cards have POS registers. 260 Autodetecting MCA cards is extremely simple. 261 Just search for the card. */ 262 263 for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) { 264 current_mca_slot = 265 mca_find_unused_adapter(ne2_adapters[i].id, 0); 266 267 if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) { 268 int res; 269 mca_set_adapter_name(current_mca_slot, 270 ne2_adapters[i].name); 271 mca_mark_as_used(current_mca_slot); 272 273 res = ne2_probe1(dev, current_mca_slot); 274 if (res) 275 mca_mark_as_unused(current_mca_slot); 276 return res; 277 } 278 } 279 return -ENODEV; 280} 281 282#ifndef MODULE 283struct net_device * __init ne2_probe(int unit) 284{ 285 struct net_device *dev = alloc_ei_netdev(); 286 int err; 287 288 if (!dev) 289 return ERR_PTR(-ENOMEM); 290 291 sprintf(dev->name, "eth%d", unit); 292 netdev_boot_setup_check(dev); 293 294 err = do_ne2_probe(dev); 295 if (err) 296 goto out; 297 return dev; 298out: 299 free_netdev(dev); 300 return ERR_PTR(err); 301} 302#endif 303 304static int ne2_procinfo(char *buf, int slot, struct net_device *dev) 305{ 306 int len=0; 307 308 len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" ); 309 len += sprintf(buf+len, "Driver written by Wim Dumon "); 310 len += sprintf(buf+len, "<wimpie@kotnet.org>\n"); 311 len += sprintf(buf+len, "Modified by "); 312 len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n"); 313 len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n"); 314 len += sprintf(buf+len, "Based on the original NE2000 drivers\n" ); 315 len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr); 316 len += sprintf(buf+len, "IRQ : %d\n", dev->irq); 317 318#define HW_ADDR(i) dev->dev_addr[i] 319 len += sprintf(buf+len, "HW addr : %x:%x:%x:%x:%x:%x\n", 320 HW_ADDR(0), HW_ADDR(1), HW_ADDR(2), 321 HW_ADDR(3), HW_ADDR(4), HW_ADDR(5) ); 322#undef HW_ADDR 323 324 return len; 325} 326 327static int __init ne2_probe1(struct net_device *dev, int slot) 328{ 329 int i, base_addr, irq, retval; 330 unsigned char POS; 331 unsigned char SA_prom[32]; 332 const char *name = "NE/2"; 333 int start_page, stop_page; 334 static unsigned version_printed; 335 336 if (ei_debug && version_printed++ == 0) 337 printk(version); 338 339 printk("NE/2 ethercard found in slot %d:", slot); 340 341 /* Read base IO and IRQ from the POS-registers */ 342 POS = mca_read_stored_pos(slot, 2); 343 if(!(POS % 2)) { 344 printk(" disabled.\n"); 345 return -ENODEV; 346 } 347 348 /* handle different POS register structure for D-Link card */ 349 350 if (mca_read_stored_pos(slot, 0) == 0xea) { 351 base_addr = dlink_addresses[(POS >> 5) & 0x03]; 352 irq = dlink_irqs[(POS >> 2) & 0x07]; 353 } 354 else { 355 i = (POS & 0xE)>>1; 356 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0" 357 " en zou het moeten werken -> %d\n", i); 358 The above line was for remote testing, thanx to sdog ... */ 359 base_addr = addresses[i - 1]; 360 irq = irqs[(POS & 0x60)>>5]; 361 } 362 363 if (!request_region(base_addr, NE_IO_EXTENT, DRV_NAME)) 364 return -EBUSY; 365 366#ifdef DEBUG 367 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS, 368 base_addr, irq); 369#endif 370 371#ifndef CRYNWR_WAY 372 /* Reset the card the way they do it in the Crynwr packet driver */ 373 for (i=0; i<8; i++) 374 outb(0x0, base_addr + NE_RESET); 375 inb(base_addr + NE_RESET); 376 outb(0x21, base_addr + NE_CMD); 377 if (inb(base_addr + NE_CMD) != 0x21) { 378 printk("NE/2 adapter not responding\n"); 379 retval = -ENODEV; 380 goto out; 381 } 382 383 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose 384 my RAM is okay. Suppose your memory is broken. Then this test 385 should fail and you won't be able to use your card. But if I do not 386 test, you won't be able to use your card, neither. So this test 387 won't help you. */ 388 389#else /* _I_ never tested it this way .. Go ahead and try ...*/ 390 /* Reset card. Who knows what dain-bramaged state it was left in. */ 391 { 392 unsigned long reset_start_time = jiffies; 393 394 /* DON'T change these to inb_p/outb_p or reset will fail on 395 clones.. */ 396 outb(inb(base_addr + NE_RESET), base_addr + NE_RESET); 397 398 while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0) 399 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 400 printk(" not found (no reset ack).\n"); 401 retval = -ENODEV; 402 goto out; 403 } 404 405 outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */ 406 } 407#endif 408 409 410 /* Read the 16 bytes of station address PROM. 411 We must first initialize registers, similar to 412 NS8390_init(eifdev, 0). 413 We can't reliably read the SAPROM address without this. 414 (I learned the hard way!). */ 415 { 416 struct { 417 unsigned char value, offset; 418 } program_seq[] = { 419 /* Select page 0 */ 420 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, 421 {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */ 422 {0x00, EN0_RCNTLO}, /* Clear the count regs. */ 423 {0x00, EN0_RCNTHI}, 424 {0x00, EN0_IMR}, /* Mask completion irq. */ 425 {0xFF, EN0_ISR}, 426 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ 427 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ 428 {32, EN0_RCNTLO}, 429 {0x00, EN0_RCNTHI}, 430 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ 431 {0x00, EN0_RSARHI}, 432 {E8390_RREAD+E8390_START, E8390_CMD}, 433 }; 434 435 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) 436 outb_p(program_seq[i].value, base_addr + 437 program_seq[i].offset); 438 439 } 440 for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) { 441 SA_prom[i] = inb(base_addr + NE_DATAPORT); 442 } 443 444 /* I don't know whether the previous sequence includes the general 445 board reset procedure, so better don't omit it and just overwrite 446 the garbage read from a DE-320 with correct stuff. */ 447 448 if (mca_read_stored_pos(slot, 0) == 0xea) { 449 unsigned int v; 450 451 for (i = 0; i < 3; i++) { 452 v = dlink_get_eeprom(i, base_addr); 453 SA_prom[(i << 1) ] = v & 0xff; 454 SA_prom[(i << 1) + 1] = (v >> 8) & 0xff; 455 } 456 } 457 458 start_page = NESM_START_PG; 459 stop_page = NESM_STOP_PG; 460 461 dev->irq=irq; 462 463 /* Snarf the interrupt now. There's no point in waiting since we cannot 464 share and the board will usually be enabled. */ 465 retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev); 466 if (retval) { 467 printk (" unable to get IRQ %d (irqval=%d).\n", 468 dev->irq, retval); 469 goto out; 470 } 471 472 dev->base_addr = base_addr; 473 474 for(i = 0; i < ETHER_ADDR_LEN; i++) { 475 printk(" %2.2x", SA_prom[i]); 476 dev->dev_addr[i] = SA_prom[i]; 477 } 478 479 printk("\n%s: %s found at %#x, using IRQ %d.\n", 480 dev->name, name, base_addr, dev->irq); 481 482 mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev); 483 484 ei_status.name = name; 485 ei_status.tx_start_page = start_page; 486 ei_status.stop_page = stop_page; 487 ei_status.word16 = (2 == 2); 488 489 ei_status.rx_start_page = start_page + TX_PAGES; 490#ifdef PACKETBUF_MEMSIZE 491 /* Allow the packet buffer size to be overridden by know-it-alls. */ 492 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; 493#endif 494 495 ei_status.reset_8390 = &ne_reset_8390; 496 ei_status.block_input = &ne_block_input; 497 ei_status.block_output = &ne_block_output; 498 ei_status.get_8390_hdr = &ne_get_8390_hdr; 499 500 ei_status.priv = slot; 501 502 dev->open = &ne_open; 503 dev->stop = &ne_close; 504#ifdef CONFIG_NET_POLL_CONTROLLER 505 dev->poll_controller = ei_poll; 506#endif 507 NS8390_init(dev, 0); 508 509 retval = register_netdev(dev); 510 if (retval) 511 goto out1; 512 return 0; 513out1: 514 mca_set_adapter_procfn( ei_status.priv, NULL, NULL); 515 free_irq(dev->irq, dev); 516out: 517 release_region(base_addr, NE_IO_EXTENT); 518 return retval; 519} 520 521static int ne_open(struct net_device *dev) 522{ 523 ei_open(dev); 524 return 0; 525} 526 527static int ne_close(struct net_device *dev) 528{ 529 if (ei_debug > 1) 530 printk("%s: Shutting down ethercard.\n", dev->name); 531 ei_close(dev); 532 return 0; 533} 534 535/* Hard reset the card. This used to pause for the same period that a 536 8390 reset command required, but that shouldn't be necessary. */ 537static void ne_reset_8390(struct net_device *dev) 538{ 539 unsigned long reset_start_time = jiffies; 540 541 if (ei_debug > 1) 542 printk("resetting the 8390 t=%ld...", jiffies); 543 544 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ 545 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 546 547 ei_status.txing = 0; 548 ei_status.dmaing = 0; 549 550 /* This check _should_not_ be necessary, omit eventually. */ 551 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) 552 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 553 printk("%s: ne_reset_8390() did not complete.\n", 554 dev->name); 555 break; 556 } 557 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ 558} 559 560/* Grab the 8390 specific header. Similar to the block_input routine, but 561 we don't need to be concerned with ring wrap as the header will be at 562 the start of a page, so we optimize accordingly. */ 563 564static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 565 int ring_page) 566{ 567 568 int nic_base = dev->base_addr; 569 570 /* This *shouldn't* happen. 571 If it does, it's the last thing you'll see */ 572 if (ei_status.dmaing) { 573 printk("%s: DMAing conflict in ne_get_8390_hdr " 574 "[DMAstat:%d][irqlock:%d].\n", 575 dev->name, ei_status.dmaing, ei_status.irqlock); 576 return; 577 } 578 579 ei_status.dmaing |= 0x01; 580 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 581 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 582 outb_p(0, nic_base + EN0_RCNTHI); 583 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ 584 outb_p(ring_page, nic_base + EN0_RSARHI); 585 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 586 587 if (ei_status.word16) 588 insw(NE_BASE + NE_DATAPORT, hdr, 589 sizeof(struct e8390_pkt_hdr)>>1); 590 else 591 insb(NE_BASE + NE_DATAPORT, hdr, 592 sizeof(struct e8390_pkt_hdr)); 593 594 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 595 ei_status.dmaing &= ~0x01; 596} 597 598/* Block input and output, similar to the Crynwr packet driver. If you 599 are porting to a new ethercard, look at the packet driver source for 600 hints. The NEx000 doesn't share the on-board packet memory -- you have 601 to put the packet out through the "remote DMA" dataport using outb. */ 602 603static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, 604 int ring_offset) 605{ 606#ifdef NE_SANITY_CHECK 607 int xfer_count = count; 608#endif 609 int nic_base = dev->base_addr; 610 char *buf = skb->data; 611 612 /* This *shouldn't* happen. 613 If it does, it's the last thing you'll see */ 614 if (ei_status.dmaing) { 615 printk("%s: DMAing conflict in ne_block_input " 616 "[DMAstat:%d][irqlock:%d].\n", 617 dev->name, ei_status.dmaing, ei_status.irqlock); 618 return; 619 } 620 ei_status.dmaing |= 0x01; 621 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 622 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 623 outb_p(count >> 8, nic_base + EN0_RCNTHI); 624 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); 625 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); 626 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 627 if (ei_status.word16) { 628 insw(NE_BASE + NE_DATAPORT,buf,count>>1); 629 if (count & 0x01) { 630 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 631#ifdef NE_SANITY_CHECK 632 xfer_count++; 633#endif 634 } 635 } else { 636 insb(NE_BASE + NE_DATAPORT, buf, count); 637 } 638 639#ifdef NE_SANITY_CHECK 640 /* This was for the ALPHA version only, but enough people have 641 been encountering problems so it is still here. If you see 642 this message you either 1) have a slightly incompatible clone 643 or 2) have noise/speed problems with your bus. */ 644 if (ei_debug > 1) { /* DMA termination address check... */ 645 int addr, tries = 20; 646 do { 647 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here 648 -- it's broken for Rx on some cards! */ 649 int high = inb_p(nic_base + EN0_RSARHI); 650 int low = inb_p(nic_base + EN0_RSARLO); 651 addr = (high << 8) + low; 652 if (((ring_offset + xfer_count) & 0xff) == low) 653 break; 654 } while (--tries > 0); 655 if (tries <= 0) 656 printk("%s: RX transfer address mismatch," 657 "%#4.4x (expected) vs. %#4.4x (actual).\n", 658 dev->name, ring_offset + xfer_count, addr); 659 } 660#endif 661 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 662 ei_status.dmaing &= ~0x01; 663} 664 665static void ne_block_output(struct net_device *dev, int count, 666 const unsigned char *buf, const int start_page) 667{ 668 int nic_base = NE_BASE; 669 unsigned long dma_start; 670#ifdef NE_SANITY_CHECK 671 int retries = 0; 672#endif 673 674 /* Round the count up for word writes. Do we need to do this? 675 What effect will an odd byte count have on the 8390? 676 I should check someday. */ 677 if (ei_status.word16 && (count & 0x01)) 678 count++; 679 680 /* This *shouldn't* happen. 681 If it does, it's the last thing you'll see */ 682 if (ei_status.dmaing) { 683 printk("%s: DMAing conflict in ne_block_output." 684 "[DMAstat:%d][irqlock:%d]\n", 685 dev->name, ei_status.dmaing, ei_status.irqlock); 686 return; 687 } 688 ei_status.dmaing |= 0x01; 689 /* We should already be in page 0, but to be safe... */ 690 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 691 692#ifdef NE_SANITY_CHECK 693retry: 694#endif 695 696#ifdef NE8390_RW_BUGFIX 697 /* Handle the read-before-write bug the same way as the 698 Crynwr packet driver -- the NatSemi method doesn't work. 699 Actually this doesn't always work either, but if you have 700 problems with your NEx000 this is better than nothing! */ 701 outb_p(0x42, nic_base + EN0_RCNTLO); 702 outb_p(0x00, nic_base + EN0_RCNTHI); 703 outb_p(0x42, nic_base + EN0_RSARLO); 704 outb_p(0x00, nic_base + EN0_RSARHI); 705 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 706 /* Make certain that the dummy read has occurred. */ 707 SLOW_DOWN_IO; 708 SLOW_DOWN_IO; 709 SLOW_DOWN_IO; 710#endif 711 712 outb_p(ENISR_RDC, nic_base + EN0_ISR); 713 714 /* Now the normal output. */ 715 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 716 outb_p(count >> 8, nic_base + EN0_RCNTHI); 717 outb_p(0x00, nic_base + EN0_RSARLO); 718 outb_p(start_page, nic_base + EN0_RSARHI); 719 720 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 721 if (ei_status.word16) { 722 outsw(NE_BASE + NE_DATAPORT, buf, count>>1); 723 } else { 724 outsb(NE_BASE + NE_DATAPORT, buf, count); 725 } 726 727 dma_start = jiffies; 728 729#ifdef NE_SANITY_CHECK 730 /* This was for the ALPHA version only, but enough people have 731 been encountering problems so it is still here. */ 732 733 if (ei_debug > 1) { /* DMA termination address check... */ 734 int addr, tries = 20; 735 do { 736 int high = inb_p(nic_base + EN0_RSARHI); 737 int low = inb_p(nic_base + EN0_RSARLO); 738 addr = (high << 8) + low; 739 if ((start_page << 8) + count == addr) 740 break; 741 } while (--tries > 0); 742 if (tries <= 0) { 743 printk("%s: Tx packet transfer address mismatch," 744 "%#4.4x (expected) vs. %#4.4x (actual).\n", 745 dev->name, (start_page << 8) + count, addr); 746 if (retries++ == 0) 747 goto retry; 748 } 749 } 750#endif 751 752 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) 753 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ 754 printk("%s: timeout waiting for Tx RDC.\n", dev->name); 755 ne_reset_8390(dev); 756 NS8390_init(dev,1); 757 break; 758 } 759 760 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 761 ei_status.dmaing &= ~0x01; 762 return; 763} 764 765 766#ifdef MODULE 767#define MAX_NE_CARDS 4 /* Max number of NE cards per module */ 768static struct net_device *dev_ne[MAX_NE_CARDS]; 769static int io[MAX_NE_CARDS]; 770static int irq[MAX_NE_CARDS]; 771static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */ 772MODULE_LICENSE("GPL"); 773 774module_param_array(io, int, NULL, 0); 775module_param_array(irq, int, NULL, 0); 776module_param_array(bad, int, NULL, 0); 777MODULE_PARM_DESC(io, "(ignored)"); 778MODULE_PARM_DESC(irq, "(ignored)"); 779MODULE_PARM_DESC(bad, "(ignored)"); 780 781/* Module code fixed by David Weinehall */ 782 783int __init init_module(void) 784{ 785 struct net_device *dev; 786 int this_dev, found = 0; 787 788 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 789 dev = alloc_ei_netdev(); 790 if (!dev) 791 break; 792 dev->irq = irq[this_dev]; 793 dev->mem_end = bad[this_dev]; 794 dev->base_addr = io[this_dev]; 795 if (do_ne2_probe(dev) == 0) { 796 dev_ne[found++] = dev; 797 continue; 798 } 799 free_netdev(dev); 800 break; 801 } 802 if (found) 803 return 0; 804 printk(KERN_WARNING "ne2.c: No NE/2 card found\n"); 805 return -ENXIO; 806} 807 808static void cleanup_card(struct net_device *dev) 809{ 810 mca_mark_as_unused(ei_status.priv); 811 mca_set_adapter_procfn( ei_status.priv, NULL, NULL); 812 free_irq(dev->irq, dev); 813 release_region(dev->base_addr, NE_IO_EXTENT); 814} 815 816void __exit cleanup_module(void) 817{ 818 int this_dev; 819 820 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 821 struct net_device *dev = dev_ne[this_dev]; 822 if (dev) { 823 unregister_netdev(dev); 824 cleanup_card(dev); 825 free_netdev(dev); 826 } 827 } 828} 829#endif /* MODULE */ 830