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_array(io, int, NULL, 0); 78 module_param_array(irq, int, NULL, 0); 79 module_param_array(bad, int, NULL, 0); 80 module_param_named(msg_enable, ne_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH)); 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) || defined(CONFIG_M32R)) 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_PLAT_MAPPI) 168 # define DCR_VAL 0x4b 169 #elif defined(CONFIG_PLAT_OAKS32R) || \ 170 defined(CONFIG_MACH_TX49XX) 171 # define DCR_VAL 0x48 /* 8-bit mode */ 172 #elif defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */ 173 # define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49) 174 #else 175 # define DCR_VAL 0x49 176 #endif 177 178 static int ne_probe1(struct net_device *dev, unsigned long ioaddr); 179 static int ne_probe_isapnp(struct net_device *dev); 180 181 static void ne_reset_8390(struct net_device *dev); 182 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 183 int ring_page); 184 static void ne_block_input(struct net_device *dev, int count, 185 struct sk_buff *skb, int ring_offset); 186 static void ne_block_output(struct net_device *dev, const int count, 187 const unsigned char *buf, const int start_page); 188 189 190 /* Probe for various non-shared-memory ethercards. 191 192 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet 193 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of 194 the SAPROM, while other supposed NE2000 clones must be detected by their 195 SA prefix. 196 197 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide 198 mode results in doubled values, which can be detected and compensated for. 199 200 The probe is also responsible for initializing the card and filling 201 in the 'dev' and 'ei_status' structures. 202 203 We use the minimum memory size for some ethercard product lines, iff we can't 204 distinguish models. You can increase the packet buffer size by setting 205 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are: 206 E1010 starts at 0x100 and ends at 0x2000. 207 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory") 208 E2010 starts at 0x100 and ends at 0x4000. 209 E2010-x starts at 0x100 and ends at 0xffff. */ 210 211 static int __init do_ne_probe(struct net_device *dev) 212 { 213 unsigned long base_addr = dev->base_addr; 214 #ifdef NEEDS_PORTLIST 215 int orig_irq = dev->irq; 216 #endif 217 218 /* First check any supplied i/o locations. User knows best. <cough> */ 219 if (base_addr > 0x1ff) { /* Check a single specified location. */ 220 int ret = ne_probe1(dev, base_addr); 221 if (ret) 222 netdev_warn(dev, "ne.c: No NE*000 card found at " 223 "i/o = %#lx\n", base_addr); 224 return ret; 225 } 226 else if (base_addr != 0) /* Don't probe at all. */ 227 return -ENXIO; 228 229 /* Then look for any installed ISAPnP clones */ 230 if (isapnp_present() && (ne_probe_isapnp(dev) == 0)) 231 return 0; 232 233 #ifdef NEEDS_PORTLIST 234 /* Last resort. The semi-risky ISA auto-probe. */ 235 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) { 236 int ioaddr = netcard_portlist[base_addr]; 237 dev->irq = orig_irq; 238 if (ne_probe1(dev, ioaddr) == 0) 239 return 0; 240 } 241 #endif 242 243 return -ENODEV; 244 } 245 246 static int __init ne_probe_isapnp(struct net_device *dev) 247 { 248 int i; 249 250 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) { 251 struct pnp_dev *idev = NULL; 252 253 while ((idev = pnp_find_dev(NULL, 254 isapnp_clone_list[i].vendor, 255 isapnp_clone_list[i].function, 256 idev))) { 257 /* Avoid already found cards from previous calls */ 258 if (pnp_device_attach(idev) < 0) 259 continue; 260 if (pnp_activate_dev(idev) < 0) { 261 pnp_device_detach(idev); 262 continue; 263 } 264 /* if no io and irq, search for next */ 265 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) { 266 pnp_device_detach(idev); 267 continue; 268 } 269 /* found it */ 270 dev->base_addr = pnp_port_start(idev, 0); 271 dev->irq = pnp_irq(idev, 0); 272 netdev_info(dev, 273 "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n", 274 (char *) isapnp_clone_list[i].driver_data, 275 dev->base_addr, dev->irq); 276 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */ 277 netdev_err(dev, 278 "ne.c: Probe of ISAPnP card at %#lx failed.\n", 279 dev->base_addr); 280 pnp_device_detach(idev); 281 return -ENXIO; 282 } 283 ei_status.priv = (unsigned long)idev; 284 break; 285 } 286 if (!idev) 287 continue; 288 return 0; 289 } 290 291 return -ENODEV; 292 } 293 294 static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr) 295 { 296 int i; 297 unsigned char SA_prom[32]; 298 int wordlength = 2; 299 const char *name = NULL; 300 int start_page, stop_page; 301 int neX000, ctron, copam, bad_card; 302 int reg0, ret; 303 static unsigned version_printed; 304 struct ei_device *ei_local = netdev_priv(dev); 305 306 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) 307 return -EBUSY; 308 309 reg0 = inb_p(ioaddr); 310 if (reg0 == 0xFF) { 311 ret = -ENODEV; 312 goto err_out; 313 } 314 315 /* Do a preliminary verification that we have a 8390. */ 316 { 317 int regd; 318 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); 319 regd = inb_p(ioaddr + 0x0d); 320 outb_p(0xff, ioaddr + 0x0d); 321 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); 322 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ 323 if (inb_p(ioaddr + EN0_COUNTER0) != 0) { 324 outb_p(reg0, ioaddr); 325 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */ 326 ret = -ENODEV; 327 goto err_out; 328 } 329 } 330 331 if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0)) 332 netdev_info(dev, "%s%s", version1, version2); 333 334 netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr); 335 336 /* A user with a poor card that fails to ack the reset, or that 337 does not have a valid 0x57,0x57 signature can still use this 338 without having to recompile. Specifying an i/o address along 339 with an otherwise unused dev->mem_end value of "0xBAD" will 340 cause the driver to skip these parts of the probe. */ 341 342 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD)); 343 344 /* Reset card. Who knows what dain-bramaged state it was left in. */ 345 346 { 347 unsigned long reset_start_time = jiffies; 348 349 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ 350 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); 351 352 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0) 353 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 354 if (bad_card) { 355 pr_cont(" (warning: no reset ack)"); 356 break; 357 } else { 358 pr_cont(" not found (no reset ack).\n"); 359 ret = -ENODEV; 360 goto err_out; 361 } 362 } 363 364 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ 365 } 366 367 /* Read the 16 bytes of station address PROM. 368 We must first initialize registers, similar to NS8390p_init(eifdev, 0). 369 We can't reliably read the SAPROM address without this. 370 (I learned the hard way!). */ 371 { 372 struct {unsigned char value, offset; } program_seq[] = 373 { 374 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ 375 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */ 376 {0x00, EN0_RCNTLO}, /* Clear the count regs. */ 377 {0x00, EN0_RCNTHI}, 378 {0x00, EN0_IMR}, /* Mask completion irq. */ 379 {0xFF, EN0_ISR}, 380 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ 381 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ 382 {32, EN0_RCNTLO}, 383 {0x00, EN0_RCNTHI}, 384 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ 385 {0x00, EN0_RSARHI}, 386 {E8390_RREAD+E8390_START, E8390_CMD}, 387 }; 388 389 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 390 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); 391 392 } 393 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) { 394 SA_prom[i] = inb(ioaddr + NE_DATAPORT); 395 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT); 396 if (SA_prom[i] != SA_prom[i+1]) 397 wordlength = 1; 398 } 399 400 if (wordlength == 2) 401 { 402 for (i = 0; i < 16; i++) 403 SA_prom[i] = SA_prom[i+i]; 404 /* We must set the 8390 for word mode. */ 405 outb_p(DCR_VAL, ioaddr + EN0_DCFG); 406 start_page = NESM_START_PG; 407 408 /* 409 * Realtek RTL8019AS datasheet says that the PSTOP register 410 * shouldn't exceed 0x60 in 8-bit mode. 411 * This chip can be identified by reading the signature from 412 * the remote byte count registers (otherwise write-only)... 413 */ 414 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */ 415 inb(ioaddr + EN0_RCNTLO) == 0x50 && 416 inb(ioaddr + EN0_RCNTHI) == 0x70) 417 stop_page = 0x60; 418 else 419 stop_page = NESM_STOP_PG; 420 } else { 421 start_page = NE1SM_START_PG; 422 stop_page = NE1SM_STOP_PG; 423 } 424 425 #if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R) 426 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57) 427 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42)); 428 #else 429 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57); 430 #endif 431 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d); 432 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00); 433 434 /* Set up the rest of the parameters. */ 435 if (neX000 || bad_card || copam) { 436 name = (wordlength == 2) ? "NE2000" : "NE1000"; 437 } 438 else if (ctron) 439 { 440 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16"; 441 start_page = 0x01; 442 stop_page = (wordlength == 2) ? 0x40 : 0x20; 443 } 444 else 445 { 446 #ifdef SUPPORT_NE_BAD_CLONES 447 /* Ack! Well, there might be a *bad* NE*000 clone there. 448 Check for total bogus addresses. */ 449 for (i = 0; bad_clone_list[i].name8; i++) 450 { 451 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] && 452 SA_prom[1] == bad_clone_list[i].SAprefix[1] && 453 SA_prom[2] == bad_clone_list[i].SAprefix[2]) 454 { 455 if (wordlength == 2) 456 { 457 name = bad_clone_list[i].name16; 458 } else { 459 name = bad_clone_list[i].name8; 460 } 461 break; 462 } 463 } 464 if (bad_clone_list[i].name8 == NULL) 465 { 466 pr_cont(" not found (invalid signature %2.2x %2.2x).\n", 467 SA_prom[14], SA_prom[15]); 468 ret = -ENXIO; 469 goto err_out; 470 } 471 #else 472 pr_cont(" not found.\n"); 473 ret = -ENXIO; 474 goto err_out; 475 #endif 476 } 477 478 if (dev->irq < 2) 479 { 480 unsigned long cookie = probe_irq_on(); 481 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */ 482 outb_p(0x00, ioaddr + EN0_RCNTLO); 483 outb_p(0x00, ioaddr + EN0_RCNTHI); 484 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */ 485 mdelay(10); /* wait 10ms for interrupt to propagate */ 486 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */ 487 dev->irq = probe_irq_off(cookie); 488 if (netif_msg_probe(ei_local)) 489 pr_cont(" autoirq is %d", dev->irq); 490 } else if (dev->irq == 2) 491 /* Fixup for users that don't know that IRQ 2 is really IRQ 9, 492 or don't know which one to set. */ 493 dev->irq = 9; 494 495 if (! dev->irq) { 496 pr_cont(" failed to detect IRQ line.\n"); 497 ret = -EAGAIN; 498 goto err_out; 499 } 500 501 /* Snarf the interrupt now. There's no point in waiting since we cannot 502 share and the board will usually be enabled. */ 503 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev); 504 if (ret) { 505 pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret); 506 goto err_out; 507 } 508 509 dev->base_addr = ioaddr; 510 511 #ifdef CONFIG_PLAT_MAPPI 512 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, 513 ioaddr + E8390_CMD); /* 0x61 */ 514 for (i = 0; i < ETH_ALEN; i++) { 515 dev->dev_addr[i] = SA_prom[i] 516 = inb_p(ioaddr + EN1_PHYS_SHIFT(i)); 517 } 518 #else 519 for (i = 0; i < ETH_ALEN; i++) { 520 dev->dev_addr[i] = SA_prom[i]; 521 } 522 #endif 523 524 pr_cont("%pM\n", dev->dev_addr); 525 526 ei_status.name = name; 527 ei_status.tx_start_page = start_page; 528 ei_status.stop_page = stop_page; 529 530 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */ 531 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01)); 532 533 ei_status.rx_start_page = start_page + TX_PAGES; 534 #ifdef PACKETBUF_MEMSIZE 535 /* Allow the packet buffer size to be overridden by know-it-alls. */ 536 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; 537 #endif 538 539 ei_status.reset_8390 = &ne_reset_8390; 540 ei_status.block_input = &ne_block_input; 541 ei_status.block_output = &ne_block_output; 542 ei_status.get_8390_hdr = &ne_get_8390_hdr; 543 ei_status.priv = 0; 544 545 dev->netdev_ops = &eip_netdev_ops; 546 NS8390p_init(dev, 0); 547 548 ei_local->msg_enable = ne_msg_enable; 549 ret = register_netdev(dev); 550 if (ret) 551 goto out_irq; 552 netdev_info(dev, "%s found at %#lx, using IRQ %d.\n", 553 name, ioaddr, dev->irq); 554 return 0; 555 556 out_irq: 557 free_irq(dev->irq, dev); 558 err_out: 559 release_region(ioaddr, NE_IO_EXTENT); 560 return ret; 561 } 562 563 /* Hard reset the card. This used to pause for the same period that a 564 8390 reset command required, but that shouldn't be necessary. */ 565 566 static void ne_reset_8390(struct net_device *dev) 567 { 568 unsigned long reset_start_time = jiffies; 569 struct ei_device *ei_local = netdev_priv(dev); 570 571 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies); 572 573 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */ 574 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 575 576 ei_status.txing = 0; 577 ei_status.dmaing = 0; 578 579 /* This check _should_not_ be necessary, omit eventually. */ 580 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) 581 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 582 netdev_err(dev, "ne_reset_8390() did not complete.\n"); 583 break; 584 } 585 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ 586 } 587 588 /* Grab the 8390 specific header. Similar to the block_input routine, but 589 we don't need to be concerned with ring wrap as the header will be at 590 the start of a page, so we optimize accordingly. */ 591 592 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) 593 { 594 int nic_base = dev->base_addr; 595 596 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 597 598 if (ei_status.dmaing) 599 { 600 netdev_err(dev, "DMAing conflict in ne_get_8390_hdr " 601 "[DMAstat:%d][irqlock:%d].\n", 602 ei_status.dmaing, ei_status.irqlock); 603 return; 604 } 605 606 ei_status.dmaing |= 0x01; 607 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 608 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 609 outb_p(0, nic_base + EN0_RCNTHI); 610 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ 611 outb_p(ring_page, nic_base + EN0_RSARHI); 612 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 613 614 if (ei_status.word16) 615 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); 616 else 617 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); 618 619 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 620 ei_status.dmaing &= ~0x01; 621 622 le16_to_cpus(&hdr->count); 623 } 624 625 /* Block input and output, similar to the Crynwr packet driver. If you 626 are porting to a new ethercard, look at the packet driver source for hints. 627 The NEx000 doesn't share the on-board packet memory -- you have to put 628 the packet out through the "remote DMA" dataport using outb. */ 629 630 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) 631 { 632 #ifdef NE_SANITY_CHECK 633 int xfer_count = count; 634 struct ei_device *ei_local = netdev_priv(dev); 635 #endif 636 int nic_base = dev->base_addr; 637 char *buf = skb->data; 638 639 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 640 if (ei_status.dmaing) 641 { 642 netdev_err(dev, "DMAing conflict in ne_block_input " 643 "[DMAstat:%d][irqlock:%d].\n", 644 ei_status.dmaing, ei_status.irqlock); 645 return; 646 } 647 ei_status.dmaing |= 0x01; 648 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 649 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 650 outb_p(count >> 8, nic_base + EN0_RCNTHI); 651 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); 652 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); 653 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 654 if (ei_status.word16) 655 { 656 insw(NE_BASE + NE_DATAPORT,buf,count>>1); 657 if (count & 0x01) 658 { 659 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 660 #ifdef NE_SANITY_CHECK 661 xfer_count++; 662 #endif 663 } 664 } else { 665 insb(NE_BASE + NE_DATAPORT, buf, count); 666 } 667 668 #ifdef NE_SANITY_CHECK 669 /* This was for the ALPHA version only, but enough people have 670 been encountering problems so it is still here. If you see 671 this message you either 1) have a slightly incompatible clone 672 or 2) have noise/speed problems with your bus. */ 673 674 if (netif_msg_rx_status(ei_local)) 675 { 676 /* DMA termination address check... */ 677 int addr, tries = 20; 678 do { 679 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here 680 -- it's broken for Rx on some cards! */ 681 int high = inb_p(nic_base + EN0_RSARHI); 682 int low = inb_p(nic_base + EN0_RSARLO); 683 addr = (high << 8) + low; 684 if (((ring_offset + xfer_count) & 0xff) == low) 685 break; 686 } while (--tries > 0); 687 if (tries <= 0) 688 netdev_warn(dev, "RX transfer address mismatch," 689 "%#4.4x (expected) vs. %#4.4x (actual).\n", 690 ring_offset + xfer_count, addr); 691 } 692 #endif 693 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 694 ei_status.dmaing &= ~0x01; 695 } 696 697 static void ne_block_output(struct net_device *dev, int count, 698 const unsigned char *buf, const int start_page) 699 { 700 int nic_base = NE_BASE; 701 unsigned long dma_start; 702 #ifdef NE_SANITY_CHECK 703 int retries = 0; 704 struct ei_device *ei_local = netdev_priv(dev); 705 #endif 706 707 /* Round the count up for word writes. Do we need to do this? 708 What effect will an odd byte count have on the 8390? 709 I should check someday. */ 710 711 if (ei_status.word16 && (count & 0x01)) 712 count++; 713 714 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 715 if (ei_status.dmaing) 716 { 717 netdev_err(dev, "DMAing conflict in ne_block_output." 718 "[DMAstat:%d][irqlock:%d]\n", 719 ei_status.dmaing, ei_status.irqlock); 720 return; 721 } 722 ei_status.dmaing |= 0x01; 723 /* We should already be in page 0, but to be safe... */ 724 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 725 726 #ifdef NE_SANITY_CHECK 727 retry: 728 #endif 729 730 #ifdef NE8390_RW_BUGFIX 731 /* Handle the read-before-write bug the same way as the 732 Crynwr packet driver -- the NatSemi method doesn't work. 733 Actually this doesn't always work either, but if you have 734 problems with your NEx000 this is better than nothing! */ 735 736 outb_p(0x42, nic_base + EN0_RCNTLO); 737 outb_p(0x00, nic_base + EN0_RCNTHI); 738 outb_p(0x42, nic_base + EN0_RSARLO); 739 outb_p(0x00, nic_base + EN0_RSARHI); 740 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD); 741 /* Make certain that the dummy read has occurred. */ 742 udelay(6); 743 #endif 744 745 outb_p(ENISR_RDC, nic_base + EN0_ISR); 746 747 /* Now the normal output. */ 748 outb_p(count & 0xff, nic_base + EN0_RCNTLO); 749 outb_p(count >> 8, nic_base + EN0_RCNTHI); 750 outb_p(0x00, nic_base + EN0_RSARLO); 751 outb_p(start_page, nic_base + EN0_RSARHI); 752 753 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 754 if (ei_status.word16) { 755 outsw(NE_BASE + NE_DATAPORT, buf, count>>1); 756 } else { 757 outsb(NE_BASE + NE_DATAPORT, buf, count); 758 } 759 760 dma_start = jiffies; 761 762 #ifdef NE_SANITY_CHECK 763 /* This was for the ALPHA version only, but enough people have 764 been encountering problems so it is still here. */ 765 766 if (netif_msg_tx_queued(ei_local)) 767 { 768 /* DMA termination address check... */ 769 int addr, tries = 20; 770 do { 771 int high = inb_p(nic_base + EN0_RSARHI); 772 int low = inb_p(nic_base + EN0_RSARLO); 773 addr = (high << 8) + low; 774 if ((start_page << 8) + count == addr) 775 break; 776 } while (--tries > 0); 777 778 if (tries <= 0) 779 { 780 netdev_warn(dev, "Tx packet transfer address mismatch," 781 "%#4.4x (expected) vs. %#4.4x (actual).\n", 782 (start_page << 8) + count, addr); 783 if (retries++ == 0) 784 goto retry; 785 } 786 } 787 #endif 788 789 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) 790 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ 791 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 792 ne_reset_8390(dev); 793 NS8390p_init(dev, 1); 794 break; 795 } 796 797 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 798 ei_status.dmaing &= ~0x01; 799 } 800 801 static int __init ne_drv_probe(struct platform_device *pdev) 802 { 803 struct net_device *dev; 804 int err, this_dev = pdev->id; 805 struct resource *res; 806 807 dev = alloc_eip_netdev(); 808 if (!dev) 809 return -ENOMEM; 810 811 /* ne.c doesn't populate resources in platform_device, but 812 * rbtx4927_ne_init and rbtx4938_ne_init do register devices 813 * with resources. 814 */ 815 res = platform_get_resource(pdev, IORESOURCE_IO, 0); 816 if (res) { 817 dev->base_addr = res->start; 818 dev->irq = platform_get_irq(pdev, 0); 819 } else { 820 if (this_dev < 0 || this_dev >= MAX_NE_CARDS) { 821 free_netdev(dev); 822 return -EINVAL; 823 } 824 dev->base_addr = io[this_dev]; 825 dev->irq = irq[this_dev]; 826 dev->mem_end = bad[this_dev]; 827 } 828 SET_NETDEV_DEV(dev, &pdev->dev); 829 err = do_ne_probe(dev); 830 if (err) { 831 free_netdev(dev); 832 return err; 833 } 834 platform_set_drvdata(pdev, dev); 835 836 /* Update with any values found by probing, don't update if 837 * resources were specified. 838 */ 839 if (!res) { 840 io[this_dev] = dev->base_addr; 841 irq[this_dev] = dev->irq; 842 } 843 return 0; 844 } 845 846 static int ne_drv_remove(struct platform_device *pdev) 847 { 848 struct net_device *dev = platform_get_drvdata(pdev); 849 850 if (dev) { 851 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 852 netif_device_detach(dev); 853 unregister_netdev(dev); 854 if (idev) 855 pnp_device_detach(idev); 856 /* Careful ne_drv_remove can be called twice, once from 857 * the platform_driver.remove and again when the 858 * platform_device is being removed. 859 */ 860 ei_status.priv = 0; 861 free_irq(dev->irq, dev); 862 release_region(dev->base_addr, NE_IO_EXTENT); 863 free_netdev(dev); 864 } 865 return 0; 866 } 867 868 /* Remove unused devices or all if true. */ 869 static void ne_loop_rm_unreg(int all) 870 { 871 int this_dev; 872 struct platform_device *pdev; 873 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 874 pdev = pdev_ne[this_dev]; 875 /* No network device == unused */ 876 if (pdev && (!platform_get_drvdata(pdev) || all)) { 877 ne_drv_remove(pdev); 878 platform_device_unregister(pdev); 879 pdev_ne[this_dev] = NULL; 880 } 881 } 882 } 883 884 #ifdef CONFIG_PM 885 static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state) 886 { 887 struct net_device *dev = platform_get_drvdata(pdev); 888 889 if (netif_running(dev)) { 890 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 891 netif_device_detach(dev); 892 if (idev) 893 pnp_stop_dev(idev); 894 } 895 return 0; 896 } 897 898 static int ne_drv_resume(struct platform_device *pdev) 899 { 900 struct net_device *dev = platform_get_drvdata(pdev); 901 902 if (netif_running(dev)) { 903 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv; 904 if (idev) 905 pnp_start_dev(idev); 906 ne_reset_8390(dev); 907 NS8390p_init(dev, 1); 908 netif_device_attach(dev); 909 } 910 return 0; 911 } 912 #else 913 #define ne_drv_suspend NULL 914 #define ne_drv_resume NULL 915 #endif 916 917 static struct platform_driver ne_driver = { 918 .remove = ne_drv_remove, 919 .suspend = ne_drv_suspend, 920 .resume = ne_drv_resume, 921 .driver = { 922 .name = DRV_NAME, 923 }, 924 }; 925 926 static void __init ne_add_devices(void) 927 { 928 int this_dev; 929 struct platform_device *pdev; 930 931 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 932 if (pdev_ne[this_dev]) 933 continue; 934 pdev = platform_device_register_simple( 935 DRV_NAME, this_dev, NULL, 0); 936 if (IS_ERR(pdev)) 937 continue; 938 pdev_ne[this_dev] = pdev; 939 } 940 } 941 942 #ifdef MODULE 943 int __init init_module(void) 944 { 945 int retval; 946 ne_add_devices(); 947 retval = platform_driver_probe(&ne_driver, ne_drv_probe); 948 if (retval) { 949 if (io[0] == 0) 950 pr_notice("ne.c: You must supply \"io=0xNNN\"" 951 " value(s) for ISA cards.\n"); 952 ne_loop_rm_unreg(1); 953 return retval; 954 } 955 956 /* Unregister unused platform_devices. */ 957 ne_loop_rm_unreg(0); 958 return retval; 959 } 960 #else /* MODULE */ 961 static int __init ne_init(void) 962 { 963 int retval = platform_driver_probe(&ne_driver, ne_drv_probe); 964 965 /* Unregister unused platform_devices. */ 966 ne_loop_rm_unreg(0); 967 return retval; 968 } 969 module_init(ne_init); 970 971 struct net_device * __init ne_probe(int unit) 972 { 973 int this_dev; 974 struct net_device *dev; 975 976 /* Find an empty slot, that is no net_device and zero io port. */ 977 this_dev = 0; 978 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) || 979 io[this_dev]) { 980 if (++this_dev == MAX_NE_CARDS) 981 return ERR_PTR(-ENOMEM); 982 } 983 984 /* Get irq, io from kernel command line */ 985 dev = alloc_eip_netdev(); 986 if (!dev) 987 return ERR_PTR(-ENOMEM); 988 989 sprintf(dev->name, "eth%d", unit); 990 netdev_boot_setup_check(dev); 991 992 io[this_dev] = dev->base_addr; 993 irq[this_dev] = dev->irq; 994 bad[this_dev] = dev->mem_end; 995 996 free_netdev(dev); 997 998 ne_add_devices(); 999 1000 /* return the first device found */ 1001 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) { 1002 if (pdev_ne[this_dev]) { 1003 dev = platform_get_drvdata(pdev_ne[this_dev]); 1004 if (dev) 1005 return dev; 1006 } 1007 } 1008 1009 return ERR_PTR(-ENODEV); 1010 } 1011 #endif /* MODULE */ 1012 1013 static void __exit ne_exit(void) 1014 { 1015 platform_driver_unregister(&ne_driver); 1016 ne_loop_rm_unreg(1); 1017 } 1018 module_exit(ne_exit); 1019