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_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) 171 #else 172 # define DCR_VAL 0x49 173 #endif 174 175 static int ne_probe1(struct net_device *dev, unsigned long ioaddr); 176 static int ne_probe_isapnp(struct net_device *dev); 177 178 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, 180 int ring_page); 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); 185 186 187 /* Probe for various non-shared-memory ethercards. 188 189 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 192 SA prefix. 193 194 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. 196 197 The probe is also responsible for initializing the card and filling 198 in the 'dev' and 'ei_status' structures. 199 200 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. */ 207 208 static int __init do_ne_probe(struct net_device *dev) 209 { 210 unsigned long base_addr = dev->base_addr; 211 #ifdef NEEDS_PORTLIST 212 int orig_irq = dev->irq; 213 #endif 214 215 /* 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); 218 if (ret) 219 netdev_warn(dev, "ne.c: No NE*000 card found at " 220 "i/o = %#lx\n", base_addr); 221 return ret; 222 } 223 else if (base_addr != 0) /* Don't probe at all. */ 224 return -ENXIO; 225 226 /* Then look for any installed ISAPnP clones */ 227 if (isapnp_present() && (ne_probe_isapnp(dev) == 0)) 228 return 0; 229 230 #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]; 234 dev->irq = orig_irq; 235 if (ne_probe1(dev, ioaddr) == 0) 236 return 0; 237 } 238 #endif 239 240 return -ENODEV; 241 } 242 243 static int __init ne_probe_isapnp(struct net_device *dev) 244 { 245 int i; 246 247 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) { 248 struct pnp_dev *idev = NULL; 249 250 while ((idev = pnp_find_dev(NULL, 251 isapnp_clone_list[i].vendor, 252 isapnp_clone_list[i].function, 253 idev))) { 254 /* Avoid already found cards from previous calls */ 255 if (pnp_device_attach(idev) < 0) 256 continue; 257 if (pnp_activate_dev(idev) < 0) { 258 pnp_device_detach(idev); 259 continue; 260 } 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); 264 continue; 265 } 266 /* found it */ 267 dev->base_addr = pnp_port_start(idev, 0); 268 dev->irq = pnp_irq(idev, 0); 269 netdev_info(dev, 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. */ 274 netdev_err(dev, 275 "ne.c: Probe of ISAPnP card at %#lx failed.\n", 276 dev->base_addr); 277 pnp_device_detach(idev); 278 return -ENXIO; 279 } 280 ei_status.priv = (unsigned long)idev; 281 break; 282 } 283 if (!idev) 284 continue; 285 return 0; 286 } 287 288 return -ENODEV; 289 } 290 291 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr) 292 { 293 int i; 294 unsigned char SA_prom[32]; 295 int wordlength = 2; 296 const char *name = NULL; 297 int start_page, stop_page; 298 int neX000, ctron, copam, bad_card; 299 int reg0, ret; 300 static unsigned version_printed; 301 struct ei_device *ei_local = netdev_priv(dev); 302 303 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) 304 return -EBUSY; 305 306 reg0 = inb_p(ioaddr); 307 if (reg0 == 0xFF) { 308 ret = -ENODEV; 309 goto err_out; 310 } 311 312 /* Do a preliminary verification that we have a 8390. */ 313 { 314 int regd; 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. */ 323 ret = -ENODEV; 324 goto err_out; 325 } 326 } 327 328 if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0)) 329 netdev_info(dev, "%s%s", version1, version2); 330 331 netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr); 332 333 /* 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. */ 338 339 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD)); 340 341 /* Reset card. Who knows what dain-bramaged state it was left in. */ 342 343 { 344 unsigned long reset_start_time = jiffies; 345 346 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ 347 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); 348 349 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0) 350 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 351 if (bad_card) { 352 pr_cont(" (warning: no reset ack)"); 353 break; 354 } else { 355 pr_cont(" not found (no reset ack).\n"); 356 ret = -ENODEV; 357 goto err_out; 358 } 359 } 360 361 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ 362 } 363 364 /* 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!). */ 368 { 369 struct {unsigned char value, offset; } program_seq[] = 370 { 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. */ 374 {0x00, EN0_RCNTHI}, 375 {0x00, EN0_IMR}, /* Mask completion irq. */ 376 {0xFF, EN0_ISR}, 377 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ 378 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ 379 {32, EN0_RCNTLO}, 380 {0x00, EN0_RCNTHI}, 381 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ 382 {0x00, EN0_RSARHI}, 383 {E8390_RREAD+E8390_START, E8390_CMD}, 384 }; 385 386 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 387 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); 388 389 } 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]) 394 wordlength = 1; 395 } 396 397 if (wordlength == 2) 398 { 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; 404 405 /* 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)... 410 */ 411 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */ 412 inb(ioaddr + EN0_RCNTLO) == 0x50 && 413 inb(ioaddr + EN0_RCNTHI) == 0x70) 414 stop_page = 0x60; 415 else 416 stop_page = NESM_STOP_PG; 417 } else { 418 start_page = NE1SM_START_PG; 419 stop_page = NE1SM_STOP_PG; 420 } 421 422 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); 425 426 /* Set up the rest of the parameters. */ 427 if (neX000 || bad_card || copam) { 428 name = (wordlength == 2) ? "NE2000" : "NE1000"; 429 } 430 else if (ctron) 431 { 432 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16"; 433 start_page = 0x01; 434 stop_page = (wordlength == 2) ? 0x40 : 0x20; 435 } 436 else 437 { 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++) 442 { 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]) 446 { 447 if (wordlength == 2) 448 { 449 name = bad_clone_list[i].name16; 450 } else { 451 name = bad_clone_list[i].name8; 452 } 453 break; 454 } 455 } 456 if (bad_clone_list[i].name8 == NULL) 457 { 458 pr_cont(" not found (invalid signature %2.2x %2.2x).\n", 459 SA_prom[14], SA_prom[15]); 460 ret = -ENXIO; 461 goto err_out; 462 } 463 #else 464 pr_cont(" not found.\n"); 465 ret = -ENXIO; 466 goto err_out; 467 #endif 468 } 469 470 if (dev->irq < 2) 471 { 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. */ 485 dev->irq = 9; 486 487 if (! dev->irq) { 488 pr_cont(" failed to detect IRQ line.\n"); 489 ret = -EAGAIN; 490 goto err_out; 491 } 492 493 /* 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); 496 if (ret) { 497 pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret); 498 goto err_out; 499 } 500 501 dev->base_addr = ioaddr; 502 503 for (i = 0; i < ETH_ALEN; i++) { 504 dev->dev_addr[i] = SA_prom[i]; 505 } 506 507 pr_cont("%pM\n", dev->dev_addr); 508 509 ei_status.name = name; 510 ei_status.tx_start_page = start_page; 511 ei_status.stop_page = stop_page; 512 513 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */ 514 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01)); 515 516 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; 520 #endif 521 522 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; 526 ei_status.priv = 0; 527 528 dev->netdev_ops = &eip_netdev_ops; 529 NS8390p_init(dev, 0); 530 531 ei_local->msg_enable = ne_msg_enable; 532 ret = register_netdev(dev); 533 if (ret) 534 goto out_irq; 535 netdev_info(dev, "%s found at %#lx, using IRQ %d.\n", 536 name, ioaddr, dev->irq); 537 return 0; 538 539 out_irq: 540 free_irq(dev->irq, dev); 541 err_out: 542 release_region(ioaddr, NE_IO_EXTENT); 543 return ret; 544 } 545 546 /* 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. */ 548 549 static void ne_reset_8390(struct net_device *dev) 550 { 551 unsigned long reset_start_time = jiffies; 552 struct ei_device *ei_local = netdev_priv(dev); 553 554 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies); 555 556 /* 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); 558 559 ei_status.txing = 0; 560 ei_status.dmaing = 0; 561 562 /* 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"); 566 break; 567 } 568 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ 569 } 570 571 /* 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. */ 574 575 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) 576 { 577 int nic_base = dev->base_addr; 578 579 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 580 581 if (ei_status.dmaing) 582 { 583 netdev_err(dev, "DMAing conflict in ne_get_8390_hdr " 584 "[DMAstat:%d][irqlock:%d].\n", 585 ei_status.dmaing, ei_status.irqlock); 586 return; 587 } 588 589 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); 596 597 if (ei_status.word16) 598 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); 599 else 600 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); 601 602 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 603 ei_status.dmaing &= ~0x01; 604 605 le16_to_cpus(&hdr->count); 606 } 607 608 /* 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. */ 612 613 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) 614 { 615 #ifdef NE_SANITY_CHECK 616 int xfer_count = count; 617 struct ei_device *ei_local = netdev_priv(dev); 618 #endif 619 int nic_base = dev->base_addr; 620 char *buf = skb->data; 621 622 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 623 if (ei_status.dmaing) 624 { 625 netdev_err(dev, "DMAing conflict in ne_block_input " 626 "[DMAstat:%d][irqlock:%d].\n", 627 ei_status.dmaing, ei_status.irqlock); 628 return; 629 } 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) 638 { 639 insw(NE_BASE + NE_DATAPORT,buf,count>>1); 640 if (count & 0x01) 641 { 642 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 643 #ifdef NE_SANITY_CHECK 644 xfer_count++; 645 #endif 646 } 647 } else { 648 insb(NE_BASE + NE_DATAPORT, buf, count); 649 } 650 651 #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. */ 656 657 if (netif_msg_rx_status(ei_local)) 658 { 659 /* DMA termination address check... */ 660 int addr, tries = 20; 661 do { 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) 668 break; 669 } while (--tries > 0); 670 if (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); 674 } 675 #endif 676 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 677 ei_status.dmaing &= ~0x01; 678 } 679 680 static void ne_block_output(struct net_device *dev, int count, 681 const unsigned char *buf, const int start_page) 682 { 683 int nic_base = NE_BASE; 684 unsigned long dma_start; 685 #ifdef NE_SANITY_CHECK 686 int retries = 0; 687 struct ei_device *ei_local = netdev_priv(dev); 688 #endif 689 690 /* 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. */ 693 694 if (ei_status.word16 && (count & 0x01)) 695 count++; 696 697 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 698 if (ei_status.dmaing) 699 { 700 netdev_err(dev, "DMAing conflict in ne_block_output." 701 "[DMAstat:%d][irqlock:%d]\n", 702 ei_status.dmaing, ei_status.irqlock); 703 return; 704 } 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); 708 709 #ifdef NE_SANITY_CHECK 710 retry: 711 #endif 712 713 #ifdef NE_RW_BUGFIX 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! */ 718 719 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. */ 725 udelay(6); 726 #endif 727 728 outb_p(ENISR_RDC, nic_base + EN0_ISR); 729 730 /* 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); 735 736 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 737 if (ei_status.word16) { 738 outsw(NE_BASE + NE_DATAPORT, buf, count>>1); 739 } else { 740 outsb(NE_BASE + NE_DATAPORT, buf, count); 741 } 742 743 dma_start = jiffies; 744 745 #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. */ 748 749 if (netif_msg_tx_queued(ei_local)) 750 { 751 /* DMA termination address check... */ 752 int addr, tries = 20; 753 do { 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) 758 break; 759 } while (--tries > 0); 760 761 if (tries <= 0) 762 { 763 netdev_warn(dev, "Tx packet transfer address mismatch," 764 "%#4.4x (expected) vs. %#4.4x (actual).\n", 765 (start_page << 8) + count, addr); 766 if (retries++ == 0) 767 goto retry; 768 } 769 } 770 #endif 771 772 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"); 775 ne_reset_8390(dev); 776 NS8390p_init(dev, 1); 777 break; 778 } 779 780 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 781 ei_status.dmaing &= ~0x01; 782 } 783 784 static int __init ne_drv_probe(struct platform_device *pdev) 785 { 786 struct net_device *dev; 787 int err, this_dev = pdev->id; 788 struct resource *res; 789 790 dev = alloc_eip_netdev(); 791 if (!dev) 792 return -ENOMEM; 793 794 /* ne.c doesn't populate resources in platform_device, but 795 * rbtx4927_ne_init and rbtx4938_ne_init do register devices 796 * with resources. 797 */ 798 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 799 if (res) { 800 dev->base_addr = res->start; 801 dev->irq = platform_get_irq(pdev, 0); 802 } else { 803 if (this_dev < 0 || this_dev >= MAX_NE_CARDS) { 804 free_netdev(dev); 805 return -EINVAL; 806 } 807 dev->base_addr = io[this_dev]; 808 dev->irq = irq[this_dev]; 809 dev->mem_end = bad[this_dev]; 810 } 811 SET_NETDEV_DEV(dev, &pdev->dev); 812 err = do_ne_probe(dev); 813 if (err) { 814 free_netdev(dev); 815 return err; 816 } 817 platform_set_drvdata(pdev, dev); 818 819 /* Update with any values found by probing, don't update if 820 * resources were specified. 821 */ 822 if (!res) { 823 io[this_dev] = dev->base_addr; 824 irq[this_dev] = dev->irq; 825 } 826 return 0; 827 } 828 829 static int ne_drv_remove(struct platform_device *pdev) 830 { 831 struct net_device *dev = platform_get_drvdata(pdev); 832 833 if (dev) { 834 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 835 netif_device_detach(dev); 836 unregister_netdev(dev); 837 if (idev) 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. 842 */ 843 ei_status.priv = 0; 844 free_irq(dev->irq, dev); 845 release_region(dev->base_addr, NE_IO_EXTENT); 846 free_netdev(dev); 847 } 848 return 0; 849 } 850 851 /* Remove unused devices or all if true. */ 852 static void ne_loop_rm_unreg(int all) 853 { 854 int this_dev; 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)) { 860 ne_drv_remove(pdev); 861 platform_device_unregister(pdev); 862 pdev_ne[this_dev] = NULL; 863 } 864 } 865 } 866 867 #ifdef CONFIG_PM 868 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state) 869 { 870 struct net_device *dev = platform_get_drvdata(pdev); 871 872 if (netif_running(dev)) { 873 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 874 netif_device_detach(dev); 875 if (idev) 876 pnp_stop_dev(idev); 877 } 878 return 0; 879 } 880 881 static int ne_drv_resume(struct platform_device *pdev) 882 { 883 struct net_device *dev = platform_get_drvdata(pdev); 884 885 if (netif_running(dev)) { 886 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 887 if (idev) 888 pnp_start_dev(idev); 889 ne_reset_8390(dev); 890 NS8390p_init(dev, 1); 891 netif_device_attach(dev); 892 } 893 return 0; 894 } 895 #else 896 #define ne_drv_suspend NULL 897 #define ne_drv_resume NULL 898 #endif 899 900 static struct platform_driver ne_driver = { 901 .remove = ne_drv_remove, 902 .suspend = ne_drv_suspend, 903 .resume = ne_drv_resume, 904 .driver = { 905 .name = DRV_NAME, 906 }, 907 }; 908 909 static void __init ne_add_devices(void) 910 { 911 int this_dev; 912 struct platform_device *pdev; 913 914 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 915 if (pdev_ne[this_dev]) 916 continue; 917 pdev = platform_device_register_simple( 918 DRV_NAME, this_dev, NULL, 0); 919 if (IS_ERR(pdev)) 920 continue; 921 pdev_ne[this_dev] = pdev; 922 } 923 } 924 925 static int __init ne_init(void) 926 { 927 int retval; 928 929 if (IS_MODULE(CONFIG_NE2000)) 930 ne_add_devices(); 931 932 retval = platform_driver_probe(&ne_driver, ne_drv_probe); 933 934 if (IS_MODULE(CONFIG_NE2000) && retval) { 935 if (io[0] == 0) 936 pr_notice("ne.c: You must supply \"io=0xNNN\"" 937 " value(s) for ISA cards.\n"); 938 ne_loop_rm_unreg(1); 939 return retval; 940 } 941 942 /* Unregister unused platform_devices. */ 943 ne_loop_rm_unreg(0); 944 return retval; 945 } 946 module_init(ne_init); 947 948 #if !defined(MODULE) && defined(CONFIG_NETDEV_LEGACY_INIT) 949 struct net_device * __init ne_probe(int unit) 950 { 951 int this_dev; 952 struct net_device *dev; 953 954 /* Find an empty slot, that is no net_device and zero io port. */ 955 this_dev = 0; 956 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) || 957 io[this_dev]) { 958 if (++this_dev == MAX_NE_CARDS) 959 return ERR_PTR(-ENOMEM); 960 } 961 962 /* Get irq, io from kernel command line */ 963 dev = alloc_eip_netdev(); 964 if (!dev) 965 return ERR_PTR(-ENOMEM); 966 967 sprintf(dev->name, "eth%d", unit); 968 netdev_boot_setup_check(dev); 969 970 io[this_dev] = dev->base_addr; 971 irq[this_dev] = dev->irq; 972 bad[this_dev] = dev->mem_end; 973 974 free_netdev(dev); 975 976 ne_add_devices(); 977 978 /* 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]); 982 if (dev) 983 return dev; 984 } 985 } 986 987 return ERR_PTR(-ENODEV); 988 } 989 #endif 990 991 static void __exit ne_exit(void) 992 { 993 platform_driver_unregister(&ne_driver); 994 ne_loop_rm_unreg(1); 995 } 996 module_exit(ne_exit); 997