1 /* A Linux device driver for PCI NE2000 clones. 2 * 3 * Authors and other copyright holders: 4 * 1992-2000 by Donald Becker, NE2000 core and various modifications. 5 * 1995-1998 by Paul Gortmaker, core modifications and PCI support. 6 * Copyright 1993 assigned to the United States Government as represented 7 * by the Director, National Security Agency. 8 * 9 * This software may be used and distributed according to the terms of 10 * the GNU General Public License (GPL), incorporated herein by reference. 11 * Drivers based on or derived from this code fall under the GPL and must 12 * retain the authorship, copyright and license notice. This file is not 13 * a complete program and may only be used when the entire operating 14 * system is licensed under the GPL. 15 * 16 * The author may be reached as becker@scyld.com, or C/O 17 * Scyld Computing Corporation 18 * 410 Severn Ave., Suite 210 19 * Annapolis MD 21403 20 * 21 * Issues remaining: 22 * People are making PCI NE2000 clones! Oh the horror, the horror... 23 * Limited full-duplex support. 24 */ 25 26 #define DRV_NAME "ne2k-pci" 27 #define DRV_DESCRIPTION "PCI NE2000 clone driver" 28 #define DRV_AUTHOR "Donald Becker / Paul Gortmaker" 29 #define DRV_VERSION "1.03" 30 #define DRV_RELDATE "9/22/2003" 31 32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 33 34 /* The user-configurable values. 35 * These may be modified when a driver module is loaded. 36 */ 37 38 /* More are supported, limit only on options */ 39 #define MAX_UNITS 8 40 41 /* Used to pass the full-duplex flag, etc. */ 42 static int full_duplex[MAX_UNITS]; 43 static int options[MAX_UNITS]; 44 45 /* Force a non std. amount of memory. Units are 256 byte pages. */ 46 /* #define PACKETBUF_MEMSIZE 0x40 */ 47 48 49 #include <linux/module.h> 50 #include <linux/kernel.h> 51 #include <linux/errno.h> 52 #include <linux/pci.h> 53 #include <linux/init.h> 54 #include <linux/interrupt.h> 55 #include <linux/ethtool.h> 56 #include <linux/netdevice.h> 57 #include <linux/etherdevice.h> 58 59 #include <linux/io.h> 60 #include <asm/irq.h> 61 #include <linux/uaccess.h> 62 63 #include "8390.h" 64 65 static int ne2k_msg_enable; 66 67 static const int default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE | 68 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR); 69 70 #if defined(__powerpc__) 71 #define inl_le(addr) le32_to_cpu(inl(addr)) 72 #define inw_le(addr) le16_to_cpu(inw(addr)) 73 #endif 74 75 MODULE_AUTHOR(DRV_AUTHOR); 76 MODULE_DESCRIPTION(DRV_DESCRIPTION); 77 MODULE_VERSION(DRV_VERSION); 78 MODULE_LICENSE("GPL"); 79 80 module_param_named(msg_enable, ne2k_msg_enable, int, 0444); 81 module_param_array(options, int, NULL, 0); 82 module_param_array(full_duplex, int, NULL, 0); 83 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)"); 84 MODULE_PARM_DESC(options, "Bit 5: full duplex"); 85 MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)"); 86 87 /* Some defines that people can play with if so inclined. 88 */ 89 90 /* Use 32 bit data-movement operations instead of 16 bit. */ 91 #define USE_LONGIO 92 93 /* Do we implement the read before write bugfix ? */ 94 /* #define NE_RW_BUGFIX */ 95 96 /* Flags. We rename an existing ei_status field to store flags! 97 * Thus only the low 8 bits are usable for non-init-time flags. 98 */ 99 #define ne2k_flags reg0 100 101 enum { 102 /* Chip can do only 16/32-bit xfers. */ 103 ONLY_16BIT_IO = 8, ONLY_32BIT_IO = 4, 104 /* User override. */ 105 FORCE_FDX = 0x20, 106 REALTEK_FDX = 0x40, HOLTEK_FDX = 0x80, 107 STOP_PG_0x60 = 0x100, 108 }; 109 110 enum ne2k_pci_chipsets { 111 CH_RealTek_RTL_8029 = 0, 112 CH_Winbond_89C940, 113 CH_Compex_RL2000, 114 CH_KTI_ET32P2, 115 CH_NetVin_NV5000SC, 116 CH_Via_86C926, 117 CH_SureCom_NE34, 118 CH_Winbond_W89C940F, 119 CH_Holtek_HT80232, 120 CH_Holtek_HT80229, 121 CH_Winbond_89C940_8c4a, 122 }; 123 124 125 static struct { 126 char *name; 127 int flags; 128 } pci_clone_list[] = { 129 {"RealTek RTL-8029(AS)", REALTEK_FDX}, 130 {"Winbond 89C940", 0}, 131 {"Compex RL2000", 0}, 132 {"KTI ET32P2", 0}, 133 {"NetVin NV5000SC", 0}, 134 {"Via 86C926", ONLY_16BIT_IO}, 135 {"SureCom NE34", 0}, 136 {"Winbond W89C940F", 0}, 137 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX}, 138 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 }, 139 {"Winbond W89C940(misprogrammed)", 0}, 140 {NULL,} 141 }; 142 143 144 static const struct pci_device_id ne2k_pci_tbl[] = { 145 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 }, 146 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 }, 147 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 }, 148 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 }, 149 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC }, 150 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 }, 151 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 }, 152 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F }, 153 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 }, 154 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 }, 155 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a }, 156 { 0, } 157 }; 158 159 MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl); 160 161 162 /* ---- No user-serviceable parts below ---- */ 163 164 #define NE_BASE (dev->base_addr) 165 #define NE_CMD 0x00 166 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ 167 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ 168 #define NE_IO_EXTENT 0x20 169 170 #define NESM_START_PG 0x40 /* First page of TX buffer */ 171 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 172 173 174 static int ne2k_pci_open(struct net_device *dev); 175 static int ne2k_pci_close(struct net_device *dev); 176 177 static void ne2k_pci_reset_8390(struct net_device *dev); 178 static void ne2k_pci_get_8390_hdr(struct net_device *dev, 179 struct e8390_pkt_hdr *hdr, int ring_page); 180 static void ne2k_pci_block_input(struct net_device *dev, int count, 181 struct sk_buff *skb, int ring_offset); 182 static void ne2k_pci_block_output(struct net_device *dev, const int count, 183 const unsigned char *buf, 184 const int start_page); 185 static const struct ethtool_ops ne2k_pci_ethtool_ops; 186 187 188 189 /* There is no room in the standard 8390 structure for extra info we need, 190 * so we build a meta/outer-wrapper structure.. 191 */ 192 struct ne2k_pci_card { 193 struct net_device *dev; 194 struct pci_dev *pci_dev; 195 }; 196 197 198 199 /* NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet 200 * buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes 201 * 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be 202 * detected by their SA prefix. 203 * 204 * Reading the SAPROM from a word-wide card with the 8390 set in byte-wide 205 * mode results in doubled values, which can be detected and compensated for. 206 * 207 * The probe is also responsible for initializing the card and filling 208 * in the 'dev' and 'ei_status' structures. 209 */ 210 211 static const struct net_device_ops ne2k_netdev_ops = { 212 .ndo_open = ne2k_pci_open, 213 .ndo_stop = ne2k_pci_close, 214 .ndo_start_xmit = ei_start_xmit, 215 .ndo_tx_timeout = ei_tx_timeout, 216 .ndo_get_stats = ei_get_stats, 217 .ndo_set_rx_mode = ei_set_multicast_list, 218 .ndo_validate_addr = eth_validate_addr, 219 .ndo_set_mac_address = eth_mac_addr, 220 #ifdef CONFIG_NET_POLL_CONTROLLER 221 .ndo_poll_controller = ei_poll, 222 #endif 223 }; 224 225 static int ne2k_pci_init_one(struct pci_dev *pdev, 226 const struct pci_device_id *ent) 227 { 228 struct net_device *dev; 229 int i; 230 unsigned char SA_prom[32]; 231 int start_page, stop_page; 232 int irq, reg0, chip_idx = ent->driver_data; 233 static unsigned int fnd_cnt; 234 long ioaddr; 235 int flags = pci_clone_list[chip_idx].flags; 236 struct ei_device *ei_local; 237 238 fnd_cnt++; 239 240 i = pci_enable_device(pdev); 241 if (i) 242 return i; 243 244 ioaddr = pci_resource_start(pdev, 0); 245 irq = pdev->irq; 246 247 if (!ioaddr || ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) == 0)) { 248 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n"); 249 goto err_out; 250 } 251 252 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) { 253 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n", 254 NE_IO_EXTENT, ioaddr); 255 goto err_out; 256 } 257 258 reg0 = inb(ioaddr); 259 if (reg0 == 0xFF) 260 goto err_out_free_res; 261 262 /* Do a preliminary verification that we have a 8390. */ 263 { 264 int regd; 265 266 outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); 267 regd = inb(ioaddr + 0x0d); 268 outb(0xff, ioaddr + 0x0d); 269 outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); 270 /* Clear the counter by reading. */ 271 inb(ioaddr + EN0_COUNTER0); 272 if (inb(ioaddr + EN0_COUNTER0) != 0) { 273 outb(reg0, ioaddr); 274 /* Restore the old values. */ 275 outb(regd, ioaddr + 0x0d); 276 goto err_out_free_res; 277 } 278 } 279 280 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */ 281 dev = alloc_ei_netdev(); 282 if (!dev) { 283 dev_err(&pdev->dev, "cannot allocate ethernet device\n"); 284 goto err_out_free_res; 285 } 286 dev->netdev_ops = &ne2k_netdev_ops; 287 ei_local = netdev_priv(dev); 288 ei_local->msg_enable = netif_msg_init(ne2k_msg_enable, default_msg_level); 289 290 SET_NETDEV_DEV(dev, &pdev->dev); 291 292 /* Reset card. Who knows what dain-bramaged state it was left in. */ 293 { 294 unsigned long reset_start_time = jiffies; 295 296 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); 297 298 /* This looks like a horrible timing loop, but it should never 299 * take more than a few cycles. 300 */ 301 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0) 302 /* Limit wait: '2' avoids jiffy roll-over. */ 303 if (jiffies - reset_start_time > 2) { 304 dev_err(&pdev->dev, 305 "Card failure (no reset ack).\n"); 306 goto err_out_free_netdev; 307 } 308 /* Ack all intr. */ 309 outb(0xff, ioaddr + EN0_ISR); 310 } 311 312 /* Read the 16 bytes of station address PROM. 313 * We must first initialize registers, similar 314 * to NS8390_init(eifdev, 0). 315 * We can't reliably read the SAPROM address without this. 316 * (I learned the hard way!). 317 */ 318 { 319 struct {unsigned char value, offset; } program_seq[] = { 320 /* Select page 0 */ 321 {E8390_NODMA + E8390_PAGE0 + E8390_STOP, E8390_CMD}, 322 /* Set word-wide access */ 323 {0x49, EN0_DCFG}, 324 /* Clear the count regs. */ 325 {0x00, EN0_RCNTLO}, 326 /* Mask completion IRQ */ 327 {0x00, EN0_RCNTHI}, 328 {0x00, EN0_IMR}, 329 {0xFF, EN0_ISR}, 330 /* 0x20 Set to monitor */ 331 {E8390_RXOFF, EN0_RXCR}, 332 /* 0x02 and loopback mode */ 333 {E8390_TXOFF, EN0_TXCR}, 334 {32, EN0_RCNTLO}, 335 {0x00, EN0_RCNTHI}, 336 /* DMA starting at 0x0000 */ 337 {0x00, EN0_RSARLO}, 338 {0x00, EN0_RSARHI}, 339 {E8390_RREAD+E8390_START, E8390_CMD}, 340 }; 341 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 342 outb(program_seq[i].value, 343 ioaddr + program_seq[i].offset); 344 345 } 346 347 /* Note: all PCI cards have at least 16 bit access, so we don't have 348 * to check for 8 bit cards. Most cards permit 32 bit access. 349 */ 350 if (flags & ONLY_32BIT_IO) { 351 for (i = 0; i < 4 ; i++) 352 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT)); 353 } else 354 for (i = 0; i < 32 /* sizeof(SA_prom )*/; i++) 355 SA_prom[i] = inb(ioaddr + NE_DATAPORT); 356 357 /* We always set the 8390 registers for word mode. */ 358 outb(0x49, ioaddr + EN0_DCFG); 359 start_page = NESM_START_PG; 360 361 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG; 362 363 /* Set up the rest of the parameters. */ 364 dev->irq = irq; 365 dev->base_addr = ioaddr; 366 pci_set_drvdata(pdev, dev); 367 368 ei_status.name = pci_clone_list[chip_idx].name; 369 ei_status.tx_start_page = start_page; 370 ei_status.stop_page = stop_page; 371 ei_status.word16 = 1; 372 ei_status.ne2k_flags = flags; 373 if (fnd_cnt < MAX_UNITS) { 374 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX)) 375 ei_status.ne2k_flags |= FORCE_FDX; 376 } 377 378 ei_status.rx_start_page = start_page + TX_PAGES; 379 #ifdef PACKETBUF_MEMSIZE 380 /* Allow the packet buffer size to be overridden by know-it-alls. */ 381 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; 382 #endif 383 384 ei_status.reset_8390 = &ne2k_pci_reset_8390; 385 ei_status.block_input = &ne2k_pci_block_input; 386 ei_status.block_output = &ne2k_pci_block_output; 387 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr; 388 ei_status.priv = (unsigned long) pdev; 389 390 dev->ethtool_ops = &ne2k_pci_ethtool_ops; 391 NS8390_init(dev, 0); 392 393 eth_hw_addr_set(dev, SA_prom); 394 395 i = register_netdev(dev); 396 if (i) 397 goto err_out_free_netdev; 398 399 netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n", 400 pci_clone_list[chip_idx].name, ioaddr, dev->irq, 401 dev->dev_addr); 402 403 return 0; 404 405 err_out_free_netdev: 406 free_netdev(dev); 407 err_out_free_res: 408 release_region(ioaddr, NE_IO_EXTENT); 409 err_out: 410 pci_disable_device(pdev); 411 return -ENODEV; 412 } 413 414 /* Magic incantation sequence for full duplex on the supported cards. 415 */ 416 static inline int set_realtek_fdx(struct net_device *dev) 417 { 418 long ioaddr = dev->base_addr; 419 420 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */ 421 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */ 422 outb(0x40, ioaddr + 0x06); /* Enable full duplex */ 423 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */ 424 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */ 425 return 0; 426 } 427 428 static inline int set_holtek_fdx(struct net_device *dev) 429 { 430 long ioaddr = dev->base_addr; 431 432 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20); 433 return 0; 434 } 435 436 static int ne2k_pci_set_fdx(struct net_device *dev) 437 { 438 if (ei_status.ne2k_flags & REALTEK_FDX) 439 return set_realtek_fdx(dev); 440 else if (ei_status.ne2k_flags & HOLTEK_FDX) 441 return set_holtek_fdx(dev); 442 443 return -EOPNOTSUPP; 444 } 445 446 static int ne2k_pci_open(struct net_device *dev) 447 { 448 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, 449 dev->name, dev); 450 451 if (ret) 452 return ret; 453 454 if (ei_status.ne2k_flags & FORCE_FDX) 455 ne2k_pci_set_fdx(dev); 456 457 ei_open(dev); 458 return 0; 459 } 460 461 static int ne2k_pci_close(struct net_device *dev) 462 { 463 ei_close(dev); 464 free_irq(dev->irq, dev); 465 return 0; 466 } 467 468 /* Hard reset the card. This used to pause for the same period that a 469 * 8390 reset command required, but that shouldn't be necessary. 470 */ 471 static void ne2k_pci_reset_8390(struct net_device *dev) 472 { 473 unsigned long reset_start_time = jiffies; 474 struct ei_device *ei_local = netdev_priv(dev); 475 476 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", 477 jiffies); 478 479 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 480 481 ei_status.txing = 0; 482 ei_status.dmaing = 0; 483 484 /* This check _should_not_ be necessary, omit eventually. */ 485 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) 486 if (jiffies - reset_start_time > 2) { 487 netdev_err(dev, "%s did not complete.\n", __func__); 488 break; 489 } 490 /* Ack intr. */ 491 outb(ENISR_RESET, NE_BASE + EN0_ISR); 492 } 493 494 /* Grab the 8390 specific header. Similar to the block_input routine, but 495 * we don't need to be concerned with ring wrap as the header will be at 496 * the start of a page, so we optimize accordingly. 497 */ 498 499 static void ne2k_pci_get_8390_hdr(struct net_device *dev, 500 struct e8390_pkt_hdr *hdr, int ring_page) 501 { 502 503 long nic_base = dev->base_addr; 504 505 /* This *shouldn't* happen. If it does, it's the last thing you'll see 506 */ 507 if (ei_status.dmaing) { 508 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n", 509 __func__, ei_status.dmaing, ei_status.irqlock); 510 return; 511 } 512 513 ei_status.dmaing |= 0x01; 514 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 515 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 516 outb(0, nic_base + EN0_RCNTHI); 517 outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 518 outb(ring_page, nic_base + EN0_RSARHI); 519 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 520 521 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 522 insw(NE_BASE + NE_DATAPORT, hdr, 523 sizeof(struct e8390_pkt_hdr) >> 1); 524 } else { 525 *(u32 *)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT)); 526 le16_to_cpus(&hdr->count); 527 } 528 /* Ack intr. */ 529 outb(ENISR_RDC, nic_base + EN0_ISR); 530 ei_status.dmaing &= ~0x01; 531 } 532 533 /* Block input and output, similar to the Crynwr packet driver. If you 534 *are porting to a new ethercard, look at the packet driver source for hints. 535 *The NEx000 doesn't share the on-board packet memory -- you have to put 536 *the packet out through the "remote DMA" dataport using outb. 537 */ 538 539 static void ne2k_pci_block_input(struct net_device *dev, int count, 540 struct sk_buff *skb, int ring_offset) 541 { 542 long nic_base = dev->base_addr; 543 char *buf = skb->data; 544 545 /* This *shouldn't* happen. 546 * If it does, it's the last thing you'll see. 547 */ 548 if (ei_status.dmaing) { 549 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n", 550 __func__, ei_status.dmaing, ei_status.irqlock); 551 return; 552 } 553 ei_status.dmaing |= 0x01; 554 if (ei_status.ne2k_flags & ONLY_32BIT_IO) 555 count = (count + 3) & 0xFFFC; 556 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 557 outb(count & 0xff, nic_base + EN0_RCNTLO); 558 outb(count >> 8, nic_base + EN0_RCNTHI); 559 outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 560 outb(ring_offset >> 8, nic_base + EN0_RSARHI); 561 outb(E8390_RREAD + E8390_START, nic_base + NE_CMD); 562 563 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 564 insw(NE_BASE + NE_DATAPORT, buf, count >> 1); 565 if (count & 0x01) 566 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 567 } else { 568 insl(NE_BASE + NE_DATAPORT, buf, count >> 2); 569 if (count & 3) { 570 buf += count & ~3; 571 if (count & 2) { 572 __le16 *b = (__le16 *)buf; 573 574 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT)); 575 buf = (char *)b; 576 } 577 if (count & 1) 578 *buf = inb(NE_BASE + NE_DATAPORT); 579 } 580 } 581 /* Ack intr. */ 582 outb(ENISR_RDC, nic_base + EN0_ISR); 583 ei_status.dmaing &= ~0x01; 584 } 585 586 static void ne2k_pci_block_output(struct net_device *dev, int count, 587 const unsigned char *buf, const int start_page) 588 { 589 long nic_base = NE_BASE; 590 unsigned long dma_start; 591 592 /* On little-endian it's always safe to round the count up for 593 * word writes. 594 */ 595 if (ei_status.ne2k_flags & ONLY_32BIT_IO) 596 count = (count + 3) & 0xFFFC; 597 else 598 if (count & 0x01) 599 count++; 600 601 /* This *shouldn't* happen. 602 * If it does, it's the last thing you'll see. 603 */ 604 if (ei_status.dmaing) { 605 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n", 606 __func__, ei_status.dmaing, ei_status.irqlock); 607 return; 608 } 609 ei_status.dmaing |= 0x01; 610 /* We should already be in page 0, but to be safe... */ 611 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 612 613 #ifdef NE_RW_BUGFIX 614 /* Handle the read-before-write bug the same way as the 615 * Crynwr packet driver -- the NatSemi method doesn't work. 616 * Actually this doesn't always work either, but if you have 617 * problems with your NEx000 this is better than nothing! 618 */ 619 outb(0x42, nic_base + EN0_RCNTLO); 620 outb(0x00, nic_base + EN0_RCNTHI); 621 outb(0x42, nic_base + EN0_RSARLO); 622 outb(0x00, nic_base + EN0_RSARHI); 623 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 624 #endif 625 outb(ENISR_RDC, nic_base + EN0_ISR); 626 627 /* Now the normal output. */ 628 outb(count & 0xff, nic_base + EN0_RCNTLO); 629 outb(count >> 8, nic_base + EN0_RCNTHI); 630 outb(0x00, nic_base + EN0_RSARLO); 631 outb(start_page, nic_base + EN0_RSARHI); 632 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 633 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 634 outsw(NE_BASE + NE_DATAPORT, buf, count >> 1); 635 } else { 636 outsl(NE_BASE + NE_DATAPORT, buf, count >> 2); 637 if (count & 3) { 638 buf += count & ~3; 639 if (count & 2) { 640 __le16 *b = (__le16 *)buf; 641 642 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT); 643 buf = (char *)b; 644 } 645 } 646 } 647 648 dma_start = jiffies; 649 650 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) 651 /* Avoid clock roll-over. */ 652 if (jiffies - dma_start > 2) { 653 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 654 ne2k_pci_reset_8390(dev); 655 NS8390_init(dev, 1); 656 break; 657 } 658 /* Ack intr. */ 659 outb(ENISR_RDC, nic_base + EN0_ISR); 660 ei_status.dmaing &= ~0x01; 661 } 662 663 static void ne2k_pci_get_drvinfo(struct net_device *dev, 664 struct ethtool_drvinfo *info) 665 { 666 struct ei_device *ei = netdev_priv(dev); 667 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv; 668 669 strscpy(info->driver, DRV_NAME, sizeof(info->driver)); 670 strscpy(info->version, DRV_VERSION, sizeof(info->version)); 671 strscpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info)); 672 } 673 674 static u32 ne2k_pci_get_msglevel(struct net_device *dev) 675 { 676 struct ei_device *ei_local = netdev_priv(dev); 677 678 return ei_local->msg_enable; 679 } 680 681 static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v) 682 { 683 struct ei_device *ei_local = netdev_priv(dev); 684 685 ei_local->msg_enable = v; 686 } 687 688 static const struct ethtool_ops ne2k_pci_ethtool_ops = { 689 .get_drvinfo = ne2k_pci_get_drvinfo, 690 .get_msglevel = ne2k_pci_get_msglevel, 691 .set_msglevel = ne2k_pci_set_msglevel, 692 }; 693 694 static void ne2k_pci_remove_one(struct pci_dev *pdev) 695 { 696 struct net_device *dev = pci_get_drvdata(pdev); 697 698 BUG_ON(!dev); 699 unregister_netdev(dev); 700 release_region(dev->base_addr, NE_IO_EXTENT); 701 free_netdev(dev); 702 pci_disable_device(pdev); 703 } 704 705 static int __maybe_unused ne2k_pci_suspend(struct device *dev_d) 706 { 707 struct net_device *dev = dev_get_drvdata(dev_d); 708 709 netif_device_detach(dev); 710 711 return 0; 712 } 713 714 static int __maybe_unused ne2k_pci_resume(struct device *dev_d) 715 { 716 struct net_device *dev = dev_get_drvdata(dev_d); 717 718 NS8390_init(dev, 1); 719 netif_device_attach(dev); 720 721 return 0; 722 } 723 724 static SIMPLE_DEV_PM_OPS(ne2k_pci_pm_ops, ne2k_pci_suspend, ne2k_pci_resume); 725 726 static struct pci_driver ne2k_driver = { 727 .name = DRV_NAME, 728 .probe = ne2k_pci_init_one, 729 .remove = ne2k_pci_remove_one, 730 .id_table = ne2k_pci_tbl, 731 .driver.pm = &ne2k_pci_pm_ops, 732 }; 733 734 735 static int __init ne2k_pci_init(void) 736 { 737 return pci_register_driver(&ne2k_driver); 738 } 739 740 741 static void __exit ne2k_pci_cleanup(void) 742 { 743 pci_unregister_driver(&ne2k_driver); 744 } 745 746 module_init(ne2k_pci_init); 747 module_exit(ne2k_pci_cleanup); 748