1 /* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */ 2 /* 3 Written 1992-94 by Donald Becker. 4 5 Copyright 1993 United States Government as represented by the 6 Director, National Security Agency. 7 8 This software may be used and distributed according to the terms 9 of the GNU General Public License, incorporated herein by reference. 10 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 13 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. 17 18 Changelog: 19 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. 33 34 */ 35 36 /* Routines for the NatSemi-based designs (NE[12]000). */ 37 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"; 42 43 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> 55 56 #include <asm/io.h> 57 58 #include "8390.h" 59 60 #define DRV_NAME "ne" 61 62 /* Some defines that people can play with if so inclined. */ 63 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 */ 67 #define BAD 0xbad 68 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; 75 76 #ifdef MODULE 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"); 87 #endif /* MODULE */ 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 /* 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 105 #endif 106 107 /* 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, 0 111 }; 112 #endif 113 114 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 */ 125 }; 126 127 MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list); 128 129 #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 */ 148 #endif 149 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */ 150 {NULL,} 151 }; 152 #endif 153 154 /* ---- No user-serviceable parts below ---- */ 155 156 #define NE_BASE (dev->base_addr) 157 #define NE_CMD 0x00 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 161 162 #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 */ 166 167 #if defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */ 168 # define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49) 169 #else 170 # define DCR_VAL 0x49 171 #endif 172 173 static int ne_probe1(struct net_device *dev, unsigned long ioaddr); 174 static int ne_probe_isapnp(struct net_device *dev); 175 176 static void ne_reset_8390(struct net_device *dev); 177 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 178 int ring_page); 179 static void ne_block_input(struct net_device *dev, int count, 180 struct sk_buff *skb, int ring_offset); 181 static void ne_block_output(struct net_device *dev, const int count, 182 const unsigned char *buf, const int start_page); 183 184 185 /* Probe for various non-shared-memory ethercards. 186 187 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet 188 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of 189 the SAPROM, while other supposed NE2000 clones must be detected by their 190 SA prefix. 191 192 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide 193 mode results in doubled values, which can be detected and compensated for. 194 195 The probe is also responsible for initializing the card and filling 196 in the 'dev' and 'ei_status' structures. 197 198 We use the minimum memory size for some ethercard product lines, iff we can't 199 distinguish models. You can increase the packet buffer size by setting 200 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are: 201 E1010 starts at 0x100 and ends at 0x2000. 202 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory") 203 E2010 starts at 0x100 and ends at 0x4000. 204 E2010-x starts at 0x100 and ends at 0xffff. */ 205 206 static int __init do_ne_probe(struct net_device *dev) 207 { 208 unsigned long base_addr = dev->base_addr; 209 #ifdef NEEDS_PORTLIST 210 int orig_irq = dev->irq; 211 #endif 212 213 /* First check any supplied i/o locations. User knows best. <cough> */ 214 if (base_addr > 0x1ff) { /* Check a single specified location. */ 215 int ret = ne_probe1(dev, base_addr); 216 if (ret) 217 netdev_warn(dev, "ne.c: No NE*000 card found at " 218 "i/o = %#lx\n", base_addr); 219 return ret; 220 } 221 else if (base_addr != 0) /* Don't probe at all. */ 222 return -ENXIO; 223 224 /* Then look for any installed ISAPnP clones */ 225 if (isapnp_present() && (ne_probe_isapnp(dev) == 0)) 226 return 0; 227 228 #ifdef NEEDS_PORTLIST 229 /* Last resort. The semi-risky ISA auto-probe. */ 230 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) { 231 int ioaddr = netcard_portlist[base_addr]; 232 dev->irq = orig_irq; 233 if (ne_probe1(dev, ioaddr) == 0) 234 return 0; 235 } 236 #endif 237 238 return -ENODEV; 239 } 240 241 static int __init ne_probe_isapnp(struct net_device *dev) 242 { 243 int i; 244 245 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) { 246 struct pnp_dev *idev = NULL; 247 248 while ((idev = pnp_find_dev(NULL, 249 isapnp_clone_list[i].vendor, 250 isapnp_clone_list[i].function, 251 idev))) { 252 /* Avoid already found cards from previous calls */ 253 if (pnp_device_attach(idev) < 0) 254 continue; 255 if (pnp_activate_dev(idev) < 0) { 256 pnp_device_detach(idev); 257 continue; 258 } 259 /* if no io and irq, search for next */ 260 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) { 261 pnp_device_detach(idev); 262 continue; 263 } 264 /* found it */ 265 dev->base_addr = pnp_port_start(idev, 0); 266 dev->irq = pnp_irq(idev, 0); 267 netdev_info(dev, 268 "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n", 269 (char *) isapnp_clone_list[i].driver_data, 270 dev->base_addr, dev->irq); 271 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */ 272 netdev_err(dev, 273 "ne.c: Probe of ISAPnP card at %#lx failed.\n", 274 dev->base_addr); 275 pnp_device_detach(idev); 276 return -ENXIO; 277 } 278 ei_status.priv = (unsigned long)idev; 279 break; 280 } 281 if (!idev) 282 continue; 283 return 0; 284 } 285 286 return -ENODEV; 287 } 288 289 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr) 290 { 291 int i; 292 unsigned char SA_prom[32]; 293 int wordlength = 2; 294 const char *name = NULL; 295 int start_page, stop_page; 296 int neX000, ctron, copam, bad_card; 297 int reg0, ret; 298 static unsigned version_printed; 299 struct ei_device *ei_local = netdev_priv(dev); 300 301 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) 302 return -EBUSY; 303 304 reg0 = inb_p(ioaddr); 305 if (reg0 == 0xFF) { 306 ret = -ENODEV; 307 goto err_out; 308 } 309 310 /* Do a preliminary verification that we have a 8390. */ 311 { 312 int regd; 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. */ 321 ret = -ENODEV; 322 goto err_out; 323 } 324 } 325 326 if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0)) 327 netdev_info(dev, "%s%s", version1, version2); 328 329 netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr); 330 331 /* 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. */ 336 337 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD)); 338 339 /* Reset card. Who knows what dain-bramaged state it was left in. */ 340 341 { 342 unsigned long reset_start_time = jiffies; 343 344 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ 345 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); 346 347 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0) 348 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 349 if (bad_card) { 350 pr_cont(" (warning: no reset ack)"); 351 break; 352 } else { 353 pr_cont(" not found (no reset ack).\n"); 354 ret = -ENODEV; 355 goto err_out; 356 } 357 } 358 359 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ 360 } 361 362 /* 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!). */ 366 { 367 struct {unsigned char value, offset; } program_seq[] = 368 { 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. */ 372 {0x00, EN0_RCNTHI}, 373 {0x00, EN0_IMR}, /* Mask completion irq. */ 374 {0xFF, EN0_ISR}, 375 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ 376 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ 377 {32, EN0_RCNTLO}, 378 {0x00, EN0_RCNTHI}, 379 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ 380 {0x00, EN0_RSARHI}, 381 {E8390_RREAD+E8390_START, E8390_CMD}, 382 }; 383 384 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 385 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); 386 387 } 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]) 392 wordlength = 1; 393 } 394 395 if (wordlength == 2) 396 { 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; 402 403 /* 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)... 408 */ 409 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */ 410 inb(ioaddr + EN0_RCNTLO) == 0x50 && 411 inb(ioaddr + EN0_RCNTHI) == 0x70) 412 stop_page = 0x60; 413 else 414 stop_page = NESM_STOP_PG; 415 } else { 416 start_page = NE1SM_START_PG; 417 stop_page = NE1SM_STOP_PG; 418 } 419 420 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57); 421 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d); 422 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00); 423 424 /* Set up the rest of the parameters. */ 425 if (neX000 || bad_card || copam) { 426 name = (wordlength == 2) ? "NE2000" : "NE1000"; 427 } 428 else if (ctron) 429 { 430 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16"; 431 start_page = 0x01; 432 stop_page = (wordlength == 2) ? 0x40 : 0x20; 433 } 434 else 435 { 436 #ifdef SUPPORT_NE_BAD_CLONES 437 /* Ack! Well, there might be a *bad* NE*000 clone there. 438 Check for total bogus addresses. */ 439 for (i = 0; bad_clone_list[i].name8; i++) 440 { 441 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] && 442 SA_prom[1] == bad_clone_list[i].SAprefix[1] && 443 SA_prom[2] == bad_clone_list[i].SAprefix[2]) 444 { 445 if (wordlength == 2) 446 { 447 name = bad_clone_list[i].name16; 448 } else { 449 name = bad_clone_list[i].name8; 450 } 451 break; 452 } 453 } 454 if (bad_clone_list[i].name8 == NULL) 455 { 456 pr_cont(" not found (invalid signature %2.2x %2.2x).\n", 457 SA_prom[14], SA_prom[15]); 458 ret = -ENXIO; 459 goto err_out; 460 } 461 #else 462 pr_cont(" not found.\n"); 463 ret = -ENXIO; 464 goto err_out; 465 #endif 466 } 467 468 if (dev->irq < 2) 469 { 470 unsigned long cookie = probe_irq_on(); 471 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */ 472 outb_p(0x00, ioaddr + EN0_RCNTLO); 473 outb_p(0x00, ioaddr + EN0_RCNTHI); 474 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */ 475 mdelay(10); /* wait 10ms for interrupt to propagate */ 476 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */ 477 dev->irq = probe_irq_off(cookie); 478 if (ne_msg_enable & NETIF_MSG_PROBE) 479 pr_cont(" autoirq is %d", dev->irq); 480 } else if (dev->irq == 2) 481 /* Fixup for users that don't know that IRQ 2 is really IRQ 9, 482 or don't know which one to set. */ 483 dev->irq = 9; 484 485 if (! dev->irq) { 486 pr_cont(" failed to detect IRQ line.\n"); 487 ret = -EAGAIN; 488 goto err_out; 489 } 490 491 /* Snarf the interrupt now. There's no point in waiting since we cannot 492 share and the board will usually be enabled. */ 493 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev); 494 if (ret) { 495 pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret); 496 goto err_out; 497 } 498 499 dev->base_addr = ioaddr; 500 501 for (i = 0; i < ETH_ALEN; i++) { 502 dev->dev_addr[i] = SA_prom[i]; 503 } 504 505 pr_cont("%pM\n", dev->dev_addr); 506 507 ei_status.name = name; 508 ei_status.tx_start_page = start_page; 509 ei_status.stop_page = stop_page; 510 511 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */ 512 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01)); 513 514 ei_status.rx_start_page = start_page + TX_PAGES; 515 #ifdef PACKETBUF_MEMSIZE 516 /* Allow the packet buffer size to be overridden by know-it-alls. */ 517 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; 518 #endif 519 520 ei_status.reset_8390 = &ne_reset_8390; 521 ei_status.block_input = &ne_block_input; 522 ei_status.block_output = &ne_block_output; 523 ei_status.get_8390_hdr = &ne_get_8390_hdr; 524 ei_status.priv = 0; 525 526 dev->netdev_ops = &eip_netdev_ops; 527 NS8390p_init(dev, 0); 528 529 ei_local->msg_enable = ne_msg_enable; 530 ret = register_netdev(dev); 531 if (ret) 532 goto out_irq; 533 netdev_info(dev, "%s found at %#lx, using IRQ %d.\n", 534 name, ioaddr, dev->irq); 535 return 0; 536 537 out_irq: 538 free_irq(dev->irq, dev); 539 err_out: 540 release_region(ioaddr, NE_IO_EXTENT); 541 return ret; 542 } 543 544 /* Hard reset the card. This used to pause for the same period that a 545 8390 reset command required, but that shouldn't be necessary. */ 546 547 static void ne_reset_8390(struct net_device *dev) 548 { 549 unsigned long reset_start_time = jiffies; 550 struct ei_device *ei_local = netdev_priv(dev); 551 552 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies); 553 554 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ 555 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 556 557 ei_status.txing = 0; 558 ei_status.dmaing = 0; 559 560 /* This check _should_not_ be necessary, omit eventually. */ 561 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) 562 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 563 netdev_err(dev, "ne_reset_8390() did not complete.\n"); 564 break; 565 } 566 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ 567 } 568 569 /* Grab the 8390 specific header. Similar to the block_input routine, but 570 we don't need to be concerned with ring wrap as the header will be at 571 the start of a page, so we optimize accordingly. */ 572 573 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) 574 { 575 int nic_base = dev->base_addr; 576 577 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 578 579 if (ei_status.dmaing) 580 { 581 netdev_err(dev, "DMAing conflict in ne_get_8390_hdr " 582 "[DMAstat:%d][irqlock:%d].\n", 583 ei_status.dmaing, ei_status.irqlock); 584 return; 585 } 586 587 ei_status.dmaing |= 0x01; 588 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 589 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 590 outb_p(0, nic_base + EN0_RCNTHI); 591 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ 592 outb_p(ring_page, nic_base + EN0_RSARHI); 593 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 594 595 if (ei_status.word16) 596 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); 597 else 598 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); 599 600 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 601 ei_status.dmaing &= ~0x01; 602 603 le16_to_cpus(&hdr->count); 604 } 605 606 /* Block input and output, similar to the Crynwr packet driver. If you 607 are porting to a new ethercard, look at the packet driver source for hints. 608 The NEx000 doesn't share the on-board packet memory -- you have to put 609 the packet out through the "remote DMA" dataport using outb. */ 610 611 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) 612 { 613 #ifdef NE_SANITY_CHECK 614 int xfer_count = count; 615 struct ei_device *ei_local = netdev_priv(dev); 616 #endif 617 int nic_base = dev->base_addr; 618 char *buf = skb->data; 619 620 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 621 if (ei_status.dmaing) 622 { 623 netdev_err(dev, "DMAing conflict in ne_block_input " 624 "[DMAstat:%d][irqlock:%d].\n", 625 ei_status.dmaing, ei_status.irqlock); 626 return; 627 } 628 ei_status.dmaing |= 0x01; 629 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 630 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 631 outb_p(count >> 8, nic_base + EN0_RCNTHI); 632 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); 633 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); 634 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 635 if (ei_status.word16) 636 { 637 insw(NE_BASE + NE_DATAPORT,buf,count>>1); 638 if (count & 0x01) 639 { 640 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 641 #ifdef NE_SANITY_CHECK 642 xfer_count++; 643 #endif 644 } 645 } else { 646 insb(NE_BASE + NE_DATAPORT, buf, count); 647 } 648 649 #ifdef NE_SANITY_CHECK 650 /* This was for the ALPHA version only, but enough people have 651 been encountering problems so it is still here. If you see 652 this message you either 1) have a slightly incompatible clone 653 or 2) have noise/speed problems with your bus. */ 654 655 if (netif_msg_rx_status(ei_local)) 656 { 657 /* DMA termination address check... */ 658 int addr, tries = 20; 659 do { 660 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here 661 -- it's broken for Rx on some cards! */ 662 int high = inb_p(nic_base + EN0_RSARHI); 663 int low = inb_p(nic_base + EN0_RSARLO); 664 addr = (high << 8) + low; 665 if (((ring_offset + xfer_count) & 0xff) == low) 666 break; 667 } while (--tries > 0); 668 if (tries <= 0) 669 netdev_warn(dev, "RX transfer address mismatch," 670 "%#4.4x (expected) vs. %#4.4x (actual).\n", 671 ring_offset + xfer_count, addr); 672 } 673 #endif 674 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 675 ei_status.dmaing &= ~0x01; 676 } 677 678 static void ne_block_output(struct net_device *dev, int count, 679 const unsigned char *buf, const int start_page) 680 { 681 int nic_base = NE_BASE; 682 unsigned long dma_start; 683 #ifdef NE_SANITY_CHECK 684 int retries = 0; 685 struct ei_device *ei_local = netdev_priv(dev); 686 #endif 687 688 /* Round the count up for word writes. Do we need to do this? 689 What effect will an odd byte count have on the 8390? 690 I should check someday. */ 691 692 if (ei_status.word16 && (count & 0x01)) 693 count++; 694 695 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 696 if (ei_status.dmaing) 697 { 698 netdev_err(dev, "DMAing conflict in ne_block_output." 699 "[DMAstat:%d][irqlock:%d]\n", 700 ei_status.dmaing, ei_status.irqlock); 701 return; 702 } 703 ei_status.dmaing |= 0x01; 704 /* We should already be in page 0, but to be safe... */ 705 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 706 707 #ifdef NE_SANITY_CHECK 708 retry: 709 #endif 710 711 #ifdef NE8390_RW_BUGFIX 712 /* Handle the read-before-write bug the same way as the 713 Crynwr packet driver -- the NatSemi method doesn't work. 714 Actually this doesn't always work either, but if you have 715 problems with your NEx000 this is better than nothing! */ 716 717 outb_p(0x42, nic_base + EN0_RCNTLO); 718 outb_p(0x00, nic_base + EN0_RCNTHI); 719 outb_p(0x42, nic_base + EN0_RSARLO); 720 outb_p(0x00, nic_base + EN0_RSARHI); 721 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 722 /* Make certain that the dummy read has occurred. */ 723 udelay(6); 724 #endif 725 726 outb_p(ENISR_RDC, nic_base + EN0_ISR); 727 728 /* Now the normal output. */ 729 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 730 outb_p(count >> 8, nic_base + EN0_RCNTHI); 731 outb_p(0x00, nic_base + EN0_RSARLO); 732 outb_p(start_page, nic_base + EN0_RSARHI); 733 734 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 735 if (ei_status.word16) { 736 outsw(NE_BASE + NE_DATAPORT, buf, count>>1); 737 } else { 738 outsb(NE_BASE + NE_DATAPORT, buf, count); 739 } 740 741 dma_start = jiffies; 742 743 #ifdef NE_SANITY_CHECK 744 /* This was for the ALPHA version only, but enough people have 745 been encountering problems so it is still here. */ 746 747 if (netif_msg_tx_queued(ei_local)) 748 { 749 /* DMA termination address check... */ 750 int addr, tries = 20; 751 do { 752 int high = inb_p(nic_base + EN0_RSARHI); 753 int low = inb_p(nic_base + EN0_RSARLO); 754 addr = (high << 8) + low; 755 if ((start_page << 8) + count == addr) 756 break; 757 } while (--tries > 0); 758 759 if (tries <= 0) 760 { 761 netdev_warn(dev, "Tx packet transfer address mismatch," 762 "%#4.4x (expected) vs. %#4.4x (actual).\n", 763 (start_page << 8) + count, addr); 764 if (retries++ == 0) 765 goto retry; 766 } 767 } 768 #endif 769 770 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) 771 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ 772 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 773 ne_reset_8390(dev); 774 NS8390p_init(dev, 1); 775 break; 776 } 777 778 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 779 ei_status.dmaing &= ~0x01; 780 } 781 782 static int __init ne_drv_probe(struct platform_device *pdev) 783 { 784 struct net_device *dev; 785 int err, this_dev = pdev->id; 786 struct resource *res; 787 788 dev = alloc_eip_netdev(); 789 if (!dev) 790 return -ENOMEM; 791 792 /* ne.c doesn't populate resources in platform_device, but 793 * rbtx4927_ne_init and rbtx4938_ne_init do register devices 794 * with resources. 795 */ 796 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 797 if (res) { 798 dev->base_addr = res->start; 799 dev->irq = platform_get_irq(pdev, 0); 800 } else { 801 if (this_dev < 0 || this_dev >= MAX_NE_CARDS) { 802 free_netdev(dev); 803 return -EINVAL; 804 } 805 dev->base_addr = io[this_dev]; 806 dev->irq = irq[this_dev]; 807 dev->mem_end = bad[this_dev]; 808 } 809 SET_NETDEV_DEV(dev, &pdev->dev); 810 err = do_ne_probe(dev); 811 if (err) { 812 free_netdev(dev); 813 return err; 814 } 815 platform_set_drvdata(pdev, dev); 816 817 /* Update with any values found by probing, don't update if 818 * resources were specified. 819 */ 820 if (!res) { 821 io[this_dev] = dev->base_addr; 822 irq[this_dev] = dev->irq; 823 } 824 return 0; 825 } 826 827 static int ne_drv_remove(struct platform_device *pdev) 828 { 829 struct net_device *dev = platform_get_drvdata(pdev); 830 831 if (dev) { 832 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 833 netif_device_detach(dev); 834 unregister_netdev(dev); 835 if (idev) 836 pnp_device_detach(idev); 837 /* Careful ne_drv_remove can be called twice, once from 838 * the platform_driver.remove and again when the 839 * platform_device is being removed. 840 */ 841 ei_status.priv = 0; 842 free_irq(dev->irq, dev); 843 release_region(dev->base_addr, NE_IO_EXTENT); 844 free_netdev(dev); 845 } 846 return 0; 847 } 848 849 /* Remove unused devices or all if true. */ 850 static void ne_loop_rm_unreg(int all) 851 { 852 int this_dev; 853 struct platform_device *pdev; 854 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 855 pdev = pdev_ne[this_dev]; 856 /* No network device == unused */ 857 if (pdev && (!platform_get_drvdata(pdev) || all)) { 858 ne_drv_remove(pdev); 859 platform_device_unregister(pdev); 860 pdev_ne[this_dev] = NULL; 861 } 862 } 863 } 864 865 #ifdef CONFIG_PM 866 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state) 867 { 868 struct net_device *dev = platform_get_drvdata(pdev); 869 870 if (netif_running(dev)) { 871 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 872 netif_device_detach(dev); 873 if (idev) 874 pnp_stop_dev(idev); 875 } 876 return 0; 877 } 878 879 static int ne_drv_resume(struct platform_device *pdev) 880 { 881 struct net_device *dev = platform_get_drvdata(pdev); 882 883 if (netif_running(dev)) { 884 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 885 if (idev) 886 pnp_start_dev(idev); 887 ne_reset_8390(dev); 888 NS8390p_init(dev, 1); 889 netif_device_attach(dev); 890 } 891 return 0; 892 } 893 #else 894 #define ne_drv_suspend NULL 895 #define ne_drv_resume NULL 896 #endif 897 898 static struct platform_driver ne_driver = { 899 .remove = ne_drv_remove, 900 .suspend = ne_drv_suspend, 901 .resume = ne_drv_resume, 902 .driver = { 903 .name = DRV_NAME, 904 }, 905 }; 906 907 static void __init ne_add_devices(void) 908 { 909 int this_dev; 910 struct platform_device *pdev; 911 912 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 913 if (pdev_ne[this_dev]) 914 continue; 915 pdev = platform_device_register_simple( 916 DRV_NAME, this_dev, NULL, 0); 917 if (IS_ERR(pdev)) 918 continue; 919 pdev_ne[this_dev] = pdev; 920 } 921 } 922 923 #ifdef MODULE 924 int __init init_module(void) 925 { 926 int retval; 927 ne_add_devices(); 928 retval = platform_driver_probe(&ne_driver, ne_drv_probe); 929 if (retval) { 930 if (io[0] == 0) 931 pr_notice("ne.c: You must supply \"io=0xNNN\"" 932 " value(s) for ISA cards.\n"); 933 ne_loop_rm_unreg(1); 934 return retval; 935 } 936 937 /* Unregister unused platform_devices. */ 938 ne_loop_rm_unreg(0); 939 return retval; 940 } 941 #else /* MODULE */ 942 static int __init ne_init(void) 943 { 944 int retval = platform_driver_probe(&ne_driver, ne_drv_probe); 945 946 /* Unregister unused platform_devices. */ 947 ne_loop_rm_unreg(0); 948 return retval; 949 } 950 module_init(ne_init); 951 952 struct net_device * __init ne_probe(int unit) 953 { 954 int this_dev; 955 struct net_device *dev; 956 957 /* Find an empty slot, that is no net_device and zero io port. */ 958 this_dev = 0; 959 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) || 960 io[this_dev]) { 961 if (++this_dev == MAX_NE_CARDS) 962 return ERR_PTR(-ENOMEM); 963 } 964 965 /* Get irq, io from kernel command line */ 966 dev = alloc_eip_netdev(); 967 if (!dev) 968 return ERR_PTR(-ENOMEM); 969 970 sprintf(dev->name, "eth%d", unit); 971 netdev_boot_setup_check(dev); 972 973 io[this_dev] = dev->base_addr; 974 irq[this_dev] = dev->irq; 975 bad[this_dev] = dev->mem_end; 976 977 free_netdev(dev); 978 979 ne_add_devices(); 980 981 /* return the first device found */ 982 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 983 if (pdev_ne[this_dev]) { 984 dev = platform_get_drvdata(pdev_ne[this_dev]); 985 if (dev) 986 return dev; 987 } 988 } 989 990 return ERR_PTR(-ENODEV); 991 } 992 #endif /* MODULE */ 993 994 static void __exit ne_exit(void) 995 { 996 platform_driver_unregister(&ne_driver); 997 ne_loop_rm_unreg(1); 998 } 999 module_exit(ne_exit); 1000