1 // SPDX-License-Identifier: GPL-1.0+ 2 /* A Linux device driver for PCI NE2000 clones. 3 * 4 * Authors and other copyright holders: 5 * 1992-2000 by Donald Becker, NE2000 core and various modifications. 6 * 1995-1998 by Paul Gortmaker, core modifications and PCI support. 7 * Copyright 1993 assigned to the United States Government as represented 8 * by the Director, National Security Agency. 9 * 10 * This software may be used and distributed according to the terms of 11 * the GNU General Public License (GPL), incorporated herein by reference. 12 * Drivers based on or derived from this code fall under the GPL and must 13 * retain the authorship, copyright and license notice. This file is not 14 * a complete program and may only be used when the entire operating 15 * system is licensed under the GPL. 16 * 17 * The author may be reached as becker@scyld.com, or C/O 18 * Scyld Computing Corporation 19 * 410 Severn Ave., Suite 210 20 * Annapolis MD 21403 21 * 22 * Issues remaining: 23 * People are making PCI NE2000 clones! Oh the horror, the horror... 24 * Limited full-duplex support. 25 */ 26 27 #define DRV_NAME "ne2k-pci" 28 #define DRV_DESCRIPTION "PCI NE2000 clone driver" 29 #define DRV_AUTHOR "Donald Becker / Paul Gortmaker" 30 #define DRV_VERSION "1.03" 31 #define DRV_RELDATE "9/22/2003" 32 33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 34 35 /* The user-configurable values. 36 * These may be modified when a driver module is loaded. 37 */ 38 39 /* More are supported, limit only on options */ 40 #define MAX_UNITS 8 41 42 /* Used to pass the full-duplex flag, etc. */ 43 static int full_duplex[MAX_UNITS]; 44 static int options[MAX_UNITS]; 45 46 /* Force a non std. amount of memory. Units are 256 byte pages. */ 47 /* #define PACKETBUF_MEMSIZE 0x40 */ 48 49 50 #include <linux/module.h> 51 #include <linux/kernel.h> 52 #include <linux/errno.h> 53 #include <linux/pci.h> 54 #include <linux/init.h> 55 #include <linux/interrupt.h> 56 #include <linux/ethtool.h> 57 #include <linux/netdevice.h> 58 #include <linux/etherdevice.h> 59 60 #include <linux/io.h> 61 #include <asm/irq.h> 62 #include <linux/uaccess.h> 63 64 #include "8390.h" 65 66 static int ne2k_msg_enable; 67 68 static const int default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE | 69 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR); 70 71 #if defined(__powerpc__) 72 #define inl_le(addr) le32_to_cpu(inl(addr)) 73 #define inw_le(addr) le16_to_cpu(inw(addr)) 74 #endif 75 76 MODULE_AUTHOR(DRV_AUTHOR); 77 MODULE_DESCRIPTION(DRV_DESCRIPTION); 78 MODULE_VERSION(DRV_VERSION); 79 MODULE_LICENSE("GPL"); 80 81 module_param_named(msg_enable, ne2k_msg_enable, int, 0444); 82 module_param_array(options, int, NULL, 0); 83 module_param_array(full_duplex, int, NULL, 0); 84 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)"); 85 MODULE_PARM_DESC(options, "Bit 5: full duplex"); 86 MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)"); 87 88 /* Some defines that people can play with if so inclined. 89 */ 90 91 /* Use 32 bit data-movement operations instead of 16 bit. */ 92 #define USE_LONGIO 93 94 /* Do we implement the read before write bugfix ? */ 95 /* #define NE_RW_BUGFIX */ 96 97 /* Flags. We rename an existing ei_status field to store flags! 98 * Thus only the low 8 bits are usable for non-init-time flags. 99 */ 100 #define ne2k_flags reg0 101 102 enum { 103 /* Chip can do only 16/32-bit xfers. */ 104 ONLY_16BIT_IO = 8, ONLY_32BIT_IO = 4, 105 /* User override. */ 106 FORCE_FDX = 0x20, 107 REALTEK_FDX = 0x40, HOLTEK_FDX = 0x80, 108 STOP_PG_0x60 = 0x100, 109 }; 110 111 enum ne2k_pci_chipsets { 112 CH_RealTek_RTL_8029 = 0, 113 CH_Winbond_89C940, 114 CH_Compex_RL2000, 115 CH_KTI_ET32P2, 116 CH_NetVin_NV5000SC, 117 CH_Via_86C926, 118 CH_SureCom_NE34, 119 CH_Winbond_W89C940F, 120 CH_Holtek_HT80232, 121 CH_Holtek_HT80229, 122 CH_Winbond_89C940_8c4a, 123 }; 124 125 126 static struct { 127 char *name; 128 int flags; 129 } pci_clone_list[] = { 130 {"RealTek RTL-8029(AS)", REALTEK_FDX}, 131 {"Winbond 89C940", 0}, 132 {"Compex RL2000", 0}, 133 {"KTI ET32P2", 0}, 134 {"NetVin NV5000SC", 0}, 135 {"Via 86C926", ONLY_16BIT_IO}, 136 {"SureCom NE34", 0}, 137 {"Winbond W89C940F", 0}, 138 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX}, 139 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 }, 140 {"Winbond W89C940(misprogrammed)", 0}, 141 {NULL,} 142 }; 143 144 145 static const struct pci_device_id ne2k_pci_tbl[] = { 146 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 }, 147 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 }, 148 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 }, 149 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 }, 150 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC }, 151 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 }, 152 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 }, 153 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F }, 154 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 }, 155 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 }, 156 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a }, 157 { 0, } 158 }; 159 160 MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl); 161 162 163 /* ---- No user-serviceable parts below ---- */ 164 165 #define NE_BASE (dev->base_addr) 166 #define NE_CMD 0x00 167 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ 168 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ 169 #define NE_IO_EXTENT 0x20 170 171 #define NESM_START_PG 0x40 /* First page of TX buffer */ 172 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 173 174 175 static int ne2k_pci_open(struct net_device *dev); 176 static int ne2k_pci_close(struct net_device *dev); 177 178 static void ne2k_pci_reset_8390(struct net_device *dev); 179 static void ne2k_pci_get_8390_hdr(struct net_device *dev, 180 struct e8390_pkt_hdr *hdr, int ring_page); 181 static void ne2k_pci_block_input(struct net_device *dev, int count, 182 struct sk_buff *skb, int ring_offset); 183 static void ne2k_pci_block_output(struct net_device *dev, const int count, 184 const unsigned char *buf, 185 const int start_page); 186 static const struct ethtool_ops ne2k_pci_ethtool_ops; 187 188 189 /* NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet 190 * buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes 191 * 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be 192 * detected by their 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 */ 200 201 static const struct net_device_ops ne2k_netdev_ops = { 202 .ndo_open = ne2k_pci_open, 203 .ndo_stop = ne2k_pci_close, 204 .ndo_start_xmit = ei_start_xmit, 205 .ndo_tx_timeout = ei_tx_timeout, 206 .ndo_get_stats = ei_get_stats, 207 .ndo_set_rx_mode = ei_set_multicast_list, 208 .ndo_validate_addr = eth_validate_addr, 209 .ndo_set_mac_address = eth_mac_addr, 210 #ifdef CONFIG_NET_POLL_CONTROLLER 211 .ndo_poll_controller = ei_poll, 212 #endif 213 }; 214 215 static int ne2k_pci_init_one(struct pci_dev *pdev, 216 const struct pci_device_id *ent) 217 { 218 struct net_device *dev; 219 int i; 220 unsigned char SA_prom[32]; 221 int start_page, stop_page; 222 int irq, reg0, chip_idx = ent->driver_data; 223 static unsigned int fnd_cnt; 224 long ioaddr; 225 int flags = pci_clone_list[chip_idx].flags; 226 struct ei_device *ei_local; 227 228 fnd_cnt++; 229 230 i = pci_enable_device(pdev); 231 if (i) 232 return i; 233 234 ioaddr = pci_resource_start(pdev, 0); 235 irq = pdev->irq; 236 237 if (!ioaddr || ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) == 0)) { 238 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n"); 239 goto err_out; 240 } 241 242 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) { 243 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n", 244 NE_IO_EXTENT, ioaddr); 245 goto err_out; 246 } 247 248 reg0 = inb(ioaddr); 249 if (reg0 == 0xFF) 250 goto err_out_free_res; 251 252 /* Do a preliminary verification that we have a 8390. */ 253 { 254 int regd; 255 256 outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD); 257 regd = inb(ioaddr + 0x0d); 258 outb(0xff, ioaddr + 0x0d); 259 outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD); 260 /* Clear the counter by reading. */ 261 inb(ioaddr + EN0_COUNTER0); 262 if (inb(ioaddr + EN0_COUNTER0) != 0) { 263 outb(reg0, ioaddr); 264 /* Restore the old values. */ 265 outb(regd, ioaddr + 0x0d); 266 goto err_out_free_res; 267 } 268 } 269 270 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */ 271 dev = alloc_ei_netdev(); 272 if (!dev) { 273 dev_err(&pdev->dev, "cannot allocate ethernet device\n"); 274 goto err_out_free_res; 275 } 276 dev->netdev_ops = &ne2k_netdev_ops; 277 ei_local = netdev_priv(dev); 278 ei_local->msg_enable = netif_msg_init(ne2k_msg_enable, default_msg_level); 279 280 SET_NETDEV_DEV(dev, &pdev->dev); 281 282 /* Reset card. Who knows what dain-bramaged state it was left in. */ 283 { 284 unsigned long reset_start_time = jiffies; 285 286 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); 287 288 /* This looks like a horrible timing loop, but it should never 289 * take more than a few cycles. 290 */ 291 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0) 292 /* Limit wait: '2' avoids jiffy roll-over. */ 293 if (jiffies - reset_start_time > 2) { 294 dev_err(&pdev->dev, 295 "Card failure (no reset ack).\n"); 296 goto err_out_free_netdev; 297 } 298 /* Ack all intr. */ 299 outb(0xff, ioaddr + EN0_ISR); 300 } 301 302 /* Read the 16 bytes of station address PROM. 303 * We must first initialize registers, similar 304 * to NS8390_init(eifdev, 0). 305 * We can't reliably read the SAPROM address without this. 306 * (I learned the hard way!). 307 */ 308 { 309 struct {unsigned char value, offset; } program_seq[] = { 310 /* Select page 0 */ 311 {E8390_NODMA + E8390_PAGE0 + E8390_STOP, E8390_CMD}, 312 /* Set word-wide access */ 313 {0x49, EN0_DCFG}, 314 /* Clear the count regs. */ 315 {0x00, EN0_RCNTLO}, 316 /* Mask completion IRQ */ 317 {0x00, EN0_RCNTHI}, 318 {0x00, EN0_IMR}, 319 {0xFF, EN0_ISR}, 320 /* 0x20 Set to monitor */ 321 {E8390_RXOFF, EN0_RXCR}, 322 /* 0x02 and loopback mode */ 323 {E8390_TXOFF, EN0_TXCR}, 324 {32, EN0_RCNTLO}, 325 {0x00, EN0_RCNTHI}, 326 /* DMA starting at 0x0000 */ 327 {0x00, EN0_RSARLO}, 328 {0x00, EN0_RSARHI}, 329 {E8390_RREAD+E8390_START, E8390_CMD}, 330 }; 331 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 332 outb(program_seq[i].value, 333 ioaddr + program_seq[i].offset); 334 335 } 336 337 /* Note: all PCI cards have at least 16 bit access, so we don't have 338 * to check for 8 bit cards. Most cards permit 32 bit access. 339 */ 340 if (flags & ONLY_32BIT_IO) { 341 for (i = 0; i < 4 ; i++) 342 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT)); 343 } else 344 for (i = 0; i < 32 /* sizeof(SA_prom )*/; i++) 345 SA_prom[i] = inb(ioaddr + NE_DATAPORT); 346 347 /* We always set the 8390 registers for word mode. */ 348 outb(0x49, ioaddr + EN0_DCFG); 349 start_page = NESM_START_PG; 350 351 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG; 352 353 /* Set up the rest of the parameters. */ 354 dev->irq = irq; 355 dev->base_addr = ioaddr; 356 pci_set_drvdata(pdev, dev); 357 358 ei_status.name = pci_clone_list[chip_idx].name; 359 ei_status.tx_start_page = start_page; 360 ei_status.stop_page = stop_page; 361 ei_status.word16 = 1; 362 ei_status.ne2k_flags = flags; 363 if (fnd_cnt < MAX_UNITS) { 364 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX)) 365 ei_status.ne2k_flags |= FORCE_FDX; 366 } 367 368 ei_status.rx_start_page = start_page + TX_PAGES; 369 #ifdef PACKETBUF_MEMSIZE 370 /* Allow the packet buffer size to be overridden by know-it-alls. */ 371 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; 372 #endif 373 374 ei_status.reset_8390 = &ne2k_pci_reset_8390; 375 ei_status.block_input = &ne2k_pci_block_input; 376 ei_status.block_output = &ne2k_pci_block_output; 377 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr; 378 ei_status.priv = (unsigned long) pdev; 379 380 dev->ethtool_ops = &ne2k_pci_ethtool_ops; 381 NS8390_init(dev, 0); 382 383 eth_hw_addr_set(dev, SA_prom); 384 385 i = register_netdev(dev); 386 if (i) 387 goto err_out_free_netdev; 388 389 netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n", 390 pci_clone_list[chip_idx].name, ioaddr, dev->irq, 391 dev->dev_addr); 392 393 return 0; 394 395 err_out_free_netdev: 396 free_netdev(dev); 397 err_out_free_res: 398 release_region(ioaddr, NE_IO_EXTENT); 399 err_out: 400 pci_disable_device(pdev); 401 return -ENODEV; 402 } 403 404 /* Magic incantation sequence for full duplex on the supported cards. 405 */ 406 static inline int set_realtek_fdx(struct net_device *dev) 407 { 408 long ioaddr = dev->base_addr; 409 410 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */ 411 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */ 412 outb(0x40, ioaddr + 0x06); /* Enable full duplex */ 413 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */ 414 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */ 415 return 0; 416 } 417 418 static inline int set_holtek_fdx(struct net_device *dev) 419 { 420 long ioaddr = dev->base_addr; 421 422 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20); 423 return 0; 424 } 425 426 static int ne2k_pci_set_fdx(struct net_device *dev) 427 { 428 if (ei_status.ne2k_flags & REALTEK_FDX) 429 return set_realtek_fdx(dev); 430 else if (ei_status.ne2k_flags & HOLTEK_FDX) 431 return set_holtek_fdx(dev); 432 433 return -EOPNOTSUPP; 434 } 435 436 static int ne2k_pci_open(struct net_device *dev) 437 { 438 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, 439 dev->name, dev); 440 441 if (ret) 442 return ret; 443 444 if (ei_status.ne2k_flags & FORCE_FDX) 445 ne2k_pci_set_fdx(dev); 446 447 ei_open(dev); 448 return 0; 449 } 450 451 static int ne2k_pci_close(struct net_device *dev) 452 { 453 ei_close(dev); 454 free_irq(dev->irq, dev); 455 return 0; 456 } 457 458 /* Hard reset the card. This used to pause for the same period that a 459 * 8390 reset command required, but that shouldn't be necessary. 460 */ 461 static void ne2k_pci_reset_8390(struct net_device *dev) 462 { 463 unsigned long reset_start_time = jiffies; 464 struct ei_device *ei_local = netdev_priv(dev); 465 466 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", 467 jiffies); 468 469 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 470 471 ei_status.txing = 0; 472 ei_status.dmaing = 0; 473 474 /* This check _should_not_ be necessary, omit eventually. */ 475 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) 476 if (jiffies - reset_start_time > 2) { 477 netdev_err(dev, "%s did not complete.\n", __func__); 478 break; 479 } 480 /* Ack intr. */ 481 outb(ENISR_RESET, NE_BASE + EN0_ISR); 482 } 483 484 /* Grab the 8390 specific header. Similar to the block_input routine, but 485 * we don't need to be concerned with ring wrap as the header will be at 486 * the start of a page, so we optimize accordingly. 487 */ 488 489 static void ne2k_pci_get_8390_hdr(struct net_device *dev, 490 struct e8390_pkt_hdr *hdr, int ring_page) 491 { 492 493 long nic_base = dev->base_addr; 494 495 /* This *shouldn't* happen. If it does, it's the last thing you'll see 496 */ 497 if (ei_status.dmaing) { 498 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n", 499 __func__, ei_status.dmaing, ei_status.irqlock); 500 return; 501 } 502 503 ei_status.dmaing |= 0x01; 504 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 505 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 506 outb(0, nic_base + EN0_RCNTHI); 507 outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 508 outb(ring_page, nic_base + EN0_RSARHI); 509 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 510 511 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 512 insw(NE_BASE + NE_DATAPORT, hdr, 513 sizeof(struct e8390_pkt_hdr) >> 1); 514 } else { 515 *(u32 *)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT)); 516 le16_to_cpus(&hdr->count); 517 } 518 /* Ack intr. */ 519 outb(ENISR_RDC, nic_base + EN0_ISR); 520 ei_status.dmaing &= ~0x01; 521 } 522 523 /* Block input and output, similar to the Crynwr packet driver. If you 524 *are porting to a new ethercard, look at the packet driver source for hints. 525 *The NEx000 doesn't share the on-board packet memory -- you have to put 526 *the packet out through the "remote DMA" dataport using outb. 527 */ 528 529 static void ne2k_pci_block_input(struct net_device *dev, int count, 530 struct sk_buff *skb, int ring_offset) 531 { 532 long nic_base = dev->base_addr; 533 char *buf = skb->data; 534 535 /* This *shouldn't* happen. 536 * If it does, it's the last thing you'll see. 537 */ 538 if (ei_status.dmaing) { 539 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n", 540 __func__, ei_status.dmaing, ei_status.irqlock); 541 return; 542 } 543 ei_status.dmaing |= 0x01; 544 if (ei_status.ne2k_flags & ONLY_32BIT_IO) 545 count = (count + 3) & 0xFFFC; 546 outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD); 547 outb(count & 0xff, nic_base + EN0_RCNTLO); 548 outb(count >> 8, nic_base + EN0_RCNTHI); 549 outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 550 outb(ring_offset >> 8, nic_base + EN0_RSARHI); 551 outb(E8390_RREAD + E8390_START, nic_base + NE_CMD); 552 553 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 554 insw(NE_BASE + NE_DATAPORT, buf, count >> 1); 555 if (count & 0x01) 556 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 557 } else { 558 insl(NE_BASE + NE_DATAPORT, buf, count >> 2); 559 if (count & 3) { 560 buf += count & ~3; 561 if (count & 2) { 562 __le16 *b = (__le16 *)buf; 563 564 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT)); 565 buf = (char *)b; 566 } 567 if (count & 1) 568 *buf = inb(NE_BASE + NE_DATAPORT); 569 } 570 } 571 /* Ack intr. */ 572 outb(ENISR_RDC, nic_base + EN0_ISR); 573 ei_status.dmaing &= ~0x01; 574 } 575 576 static void ne2k_pci_block_output(struct net_device *dev, int count, 577 const unsigned char *buf, const int start_page) 578 { 579 long nic_base = NE_BASE; 580 unsigned long dma_start; 581 582 /* On little-endian it's always safe to round the count up for 583 * word writes. 584 */ 585 if (ei_status.ne2k_flags & ONLY_32BIT_IO) 586 count = (count + 3) & 0xFFFC; 587 else 588 if (count & 0x01) 589 count++; 590 591 /* This *shouldn't* happen. 592 * If it does, it's the last thing you'll see. 593 */ 594 if (ei_status.dmaing) { 595 netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n", 596 __func__, ei_status.dmaing, ei_status.irqlock); 597 return; 598 } 599 ei_status.dmaing |= 0x01; 600 /* We should already be in page 0, but to be safe... */ 601 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 602 603 #ifdef NE_RW_BUGFIX 604 /* Handle the read-before-write bug the same way as the 605 * Crynwr packet driver -- the NatSemi method doesn't work. 606 * Actually this doesn't always work either, but if you have 607 * problems with your NEx000 this is better than nothing! 608 */ 609 outb(0x42, nic_base + EN0_RCNTLO); 610 outb(0x00, nic_base + EN0_RCNTHI); 611 outb(0x42, nic_base + EN0_RSARLO); 612 outb(0x00, nic_base + EN0_RSARHI); 613 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 614 #endif 615 outb(ENISR_RDC, nic_base + EN0_ISR); 616 617 /* Now the normal output. */ 618 outb(count & 0xff, nic_base + EN0_RCNTLO); 619 outb(count >> 8, nic_base + EN0_RCNTHI); 620 outb(0x00, nic_base + EN0_RSARLO); 621 outb(start_page, nic_base + EN0_RSARHI); 622 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 623 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 624 outsw(NE_BASE + NE_DATAPORT, buf, count >> 1); 625 } else { 626 outsl(NE_BASE + NE_DATAPORT, buf, count >> 2); 627 if (count & 3) { 628 buf += count & ~3; 629 if (count & 2) { 630 __le16 *b = (__le16 *)buf; 631 632 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT); 633 buf = (char *)b; 634 } 635 } 636 } 637 638 dma_start = jiffies; 639 640 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) 641 /* Avoid clock roll-over. */ 642 if (jiffies - dma_start > 2) { 643 netdev_warn(dev, "timeout waiting for Tx RDC.\n"); 644 ne2k_pci_reset_8390(dev); 645 NS8390_init(dev, 1); 646 break; 647 } 648 /* Ack intr. */ 649 outb(ENISR_RDC, nic_base + EN0_ISR); 650 ei_status.dmaing &= ~0x01; 651 } 652 653 static void ne2k_pci_get_drvinfo(struct net_device *dev, 654 struct ethtool_drvinfo *info) 655 { 656 struct ei_device *ei = netdev_priv(dev); 657 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv; 658 659 strscpy(info->driver, DRV_NAME, sizeof(info->driver)); 660 strscpy(info->version, DRV_VERSION, sizeof(info->version)); 661 strscpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info)); 662 } 663 664 static u32 ne2k_pci_get_msglevel(struct net_device *dev) 665 { 666 struct ei_device *ei_local = netdev_priv(dev); 667 668 return ei_local->msg_enable; 669 } 670 671 static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v) 672 { 673 struct ei_device *ei_local = netdev_priv(dev); 674 675 ei_local->msg_enable = v; 676 } 677 678 static const struct ethtool_ops ne2k_pci_ethtool_ops = { 679 .get_drvinfo = ne2k_pci_get_drvinfo, 680 .get_msglevel = ne2k_pci_get_msglevel, 681 .set_msglevel = ne2k_pci_set_msglevel, 682 }; 683 684 static void ne2k_pci_remove_one(struct pci_dev *pdev) 685 { 686 struct net_device *dev = pci_get_drvdata(pdev); 687 688 BUG_ON(!dev); 689 unregister_netdev(dev); 690 release_region(dev->base_addr, NE_IO_EXTENT); 691 free_netdev(dev); 692 pci_disable_device(pdev); 693 } 694 695 static int __maybe_unused ne2k_pci_suspend(struct device *dev_d) 696 { 697 struct net_device *dev = dev_get_drvdata(dev_d); 698 699 netif_device_detach(dev); 700 701 return 0; 702 } 703 704 static int __maybe_unused ne2k_pci_resume(struct device *dev_d) 705 { 706 struct net_device *dev = dev_get_drvdata(dev_d); 707 708 NS8390_init(dev, 1); 709 netif_device_attach(dev); 710 711 return 0; 712 } 713 714 static SIMPLE_DEV_PM_OPS(ne2k_pci_pm_ops, ne2k_pci_suspend, ne2k_pci_resume); 715 716 static struct pci_driver ne2k_driver = { 717 .name = DRV_NAME, 718 .probe = ne2k_pci_init_one, 719 .remove = ne2k_pci_remove_one, 720 .id_table = ne2k_pci_tbl, 721 .driver.pm = &ne2k_pci_pm_ops, 722 }; 723 module_pci_driver(ne2k_driver); 724