1 /* ne2k-pci.c: A NE2000 clone on PCI bus driver for Linux. */ 2 /* 3 A Linux device driver for PCI NE2000 clones. 4 5 Authors and other copyright holders: 6 1992-2000 by Donald Becker, NE2000 core and various modifications. 7 1995-1998 by Paul Gortmaker, core modifications and PCI support. 8 Copyright 1993 assigned to the United States Government as represented 9 by the Director, National Security Agency. 10 11 This software may be used and distributed according to the terms of 12 the GNU General Public License (GPL), incorporated herein by reference. 13 Drivers based on or derived from this code fall under the GPL and must 14 retain the authorship, copyright and license notice. This file is not 15 a complete program and may only be used when the entire operating 16 system is licensed under the GPL. 17 18 The author may be reached as becker@scyld.com, or C/O 19 Scyld Computing Corporation 20 410 Severn Ave., Suite 210 21 Annapolis MD 21403 22 23 Issues remaining: 24 People are making PCI ne2000 clones! Oh the horror, the horror... 25 Limited full-duplex support. 26 */ 27 28 #define DRV_NAME "ne2k-pci" 29 #define DRV_VERSION "1.03" 30 #define DRV_RELDATE "9/22/2003" 31 32 33 /* The user-configurable values. 34 These may be modified when a driver module is loaded.*/ 35 36 static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ 37 38 #define MAX_UNITS 8 /* More are supported, limit only on options */ 39 /* Used to pass the full-duplex flag, etc. */ 40 static int full_duplex[MAX_UNITS]; 41 static int options[MAX_UNITS]; 42 43 /* Force a non std. amount of memory. Units are 256 byte pages. */ 44 /* #define PACKETBUF_MEMSIZE 0x40 */ 45 46 47 #include <linux/module.h> 48 #include <linux/kernel.h> 49 #include <linux/errno.h> 50 #include <linux/pci.h> 51 #include <linux/init.h> 52 #include <linux/interrupt.h> 53 #include <linux/ethtool.h> 54 #include <linux/netdevice.h> 55 #include <linux/etherdevice.h> 56 57 #include <asm/io.h> 58 #include <asm/irq.h> 59 #include <asm/uaccess.h> 60 61 #include "8390.h" 62 63 /* These identify the driver base version and may not be removed. */ 64 static const char version[] = 65 KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE 66 " D. Becker/P. Gortmaker\n"; 67 68 #if defined(__powerpc__) 69 #define inl_le(addr) le32_to_cpu(inl(addr)) 70 #define inw_le(addr) le16_to_cpu(inw(addr)) 71 #endif 72 73 #define PFX DRV_NAME ": " 74 75 MODULE_AUTHOR("Donald Becker / Paul Gortmaker"); 76 MODULE_DESCRIPTION("PCI NE2000 clone driver"); 77 MODULE_LICENSE("GPL"); 78 79 module_param(debug, int, 0); 80 module_param_array(options, int, NULL, 0); 81 module_param_array(full_duplex, int, NULL, 0); 82 MODULE_PARM_DESC(debug, "debug level (1-2)"); 83 MODULE_PARM_DESC(options, "Bit 5: full duplex"); 84 MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)"); 85 86 /* Some defines that people can play with if so inclined. */ 87 88 /* Use 32 bit data-movement operations instead of 16 bit. */ 89 #define USE_LONGIO 90 91 /* Do we implement the read before write bugfix ? */ 92 /* #define NE_RW_BUGFIX */ 93 94 /* Flags. We rename an existing ei_status field to store flags! */ 95 /* Thus only the low 8 bits are usable for non-init-time flags. */ 96 #define ne2k_flags reg0 97 enum { 98 ONLY_16BIT_IO=8, ONLY_32BIT_IO=4, /* Chip can do only 16/32-bit xfers. */ 99 FORCE_FDX=0x20, /* User override. */ 100 REALTEK_FDX=0x40, HOLTEK_FDX=0x80, 101 STOP_PG_0x60=0x100, 102 }; 103 104 enum ne2k_pci_chipsets { 105 CH_RealTek_RTL_8029 = 0, 106 CH_Winbond_89C940, 107 CH_Compex_RL2000, 108 CH_KTI_ET32P2, 109 CH_NetVin_NV5000SC, 110 CH_Via_86C926, 111 CH_SureCom_NE34, 112 CH_Winbond_W89C940F, 113 CH_Holtek_HT80232, 114 CH_Holtek_HT80229, 115 CH_Winbond_89C940_8c4a, 116 }; 117 118 119 static struct { 120 char *name; 121 int flags; 122 } pci_clone_list[] = { 123 {"RealTek RTL-8029", REALTEK_FDX}, 124 {"Winbond 89C940", 0}, 125 {"Compex RL2000", 0}, 126 {"KTI ET32P2", 0}, 127 {"NetVin NV5000SC", 0}, 128 {"Via 86C926", ONLY_16BIT_IO}, 129 {"SureCom NE34", 0}, 130 {"Winbond W89C940F", 0}, 131 {"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX}, 132 {"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 }, 133 {"Winbond W89C940(misprogrammed)", 0}, 134 {NULL,} 135 }; 136 137 138 static DEFINE_PCI_DEVICE_TABLE(ne2k_pci_tbl) = { 139 { 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 }, 140 { 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 }, 141 { 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 }, 142 { 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 }, 143 { 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC }, 144 { 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 }, 145 { 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 }, 146 { 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F }, 147 { 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 }, 148 { 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 }, 149 { 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a }, 150 { 0, } 151 }; 152 MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl); 153 154 155 /* ---- No user-serviceable parts below ---- */ 156 157 #define NE_BASE (dev->base_addr) 158 #define NE_CMD 0x00 159 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ 160 #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ 161 #define NE_IO_EXTENT 0x20 162 163 #define NESM_START_PG 0x40 /* First page of TX buffer */ 164 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 165 166 167 static int ne2k_pci_open(struct net_device *dev); 168 static int ne2k_pci_close(struct net_device *dev); 169 170 static void ne2k_pci_reset_8390(struct net_device *dev); 171 static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 172 int ring_page); 173 static void ne2k_pci_block_input(struct net_device *dev, int count, 174 struct sk_buff *skb, int ring_offset); 175 static void ne2k_pci_block_output(struct net_device *dev, const int count, 176 const unsigned char *buf, const int start_page); 177 static const struct ethtool_ops ne2k_pci_ethtool_ops; 178 179 180 181 /* There is no room in the standard 8390 structure for extra info we need, 182 so we build a meta/outer-wrapper structure.. */ 183 struct ne2k_pci_card { 184 struct net_device *dev; 185 struct pci_dev *pci_dev; 186 }; 187 188 189 190 /* 191 NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet 192 buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes 193 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be 194 detected by their SA prefix. 195 196 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide 197 mode results in doubled values, which can be detected and compensated for. 198 199 The probe is also responsible for initializing the card and filling 200 in the 'dev' and 'ei_status' structures. 201 */ 202 203 static const struct net_device_ops ne2k_netdev_ops = { 204 .ndo_open = ne2k_pci_open, 205 .ndo_stop = ne2k_pci_close, 206 .ndo_start_xmit = ei_start_xmit, 207 .ndo_tx_timeout = ei_tx_timeout, 208 .ndo_get_stats = ei_get_stats, 209 .ndo_set_rx_mode = ei_set_multicast_list, 210 .ndo_validate_addr = eth_validate_addr, 211 .ndo_set_mac_address = eth_mac_addr, 212 .ndo_change_mtu = eth_change_mtu, 213 #ifdef CONFIG_NET_POLL_CONTROLLER 214 .ndo_poll_controller = ei_poll, 215 #endif 216 }; 217 218 static int ne2k_pci_init_one(struct pci_dev *pdev, 219 const struct pci_device_id *ent) 220 { 221 struct net_device *dev; 222 int i; 223 unsigned char SA_prom[32]; 224 int start_page, stop_page; 225 int irq, reg0, chip_idx = ent->driver_data; 226 static unsigned int fnd_cnt; 227 long ioaddr; 228 int flags = pci_clone_list[chip_idx].flags; 229 230 /* when built into the kernel, we only print version if device is found */ 231 #ifndef MODULE 232 static int printed_version; 233 if (!printed_version++) 234 printk(version); 235 #endif 236 237 fnd_cnt++; 238 239 i = pci_enable_device (pdev); 240 if (i) 241 return i; 242 243 ioaddr = pci_resource_start (pdev, 0); 244 irq = pdev->irq; 245 246 if (!ioaddr || ((pci_resource_flags (pdev, 0) & IORESOURCE_IO) == 0)) { 247 dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n"); 248 return -ENODEV; 249 } 250 251 if (request_region (ioaddr, NE_IO_EXTENT, DRV_NAME) == NULL) { 252 dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n", 253 NE_IO_EXTENT, ioaddr); 254 return -EBUSY; 255 } 256 257 reg0 = inb(ioaddr); 258 if (reg0 == 0xFF) 259 goto err_out_free_res; 260 261 /* Do a preliminary verification that we have a 8390. */ 262 { 263 int regd; 264 outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); 265 regd = inb(ioaddr + 0x0d); 266 outb(0xff, ioaddr + 0x0d); 267 outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); 268 inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ 269 if (inb(ioaddr + EN0_COUNTER0) != 0) { 270 outb(reg0, ioaddr); 271 outb(regd, ioaddr + 0x0d); /* Restore the old values. */ 272 goto err_out_free_res; 273 } 274 } 275 276 /* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */ 277 dev = alloc_ei_netdev(); 278 if (!dev) { 279 dev_err(&pdev->dev, "cannot allocate ethernet device\n"); 280 goto err_out_free_res; 281 } 282 dev->netdev_ops = &ne2k_netdev_ops; 283 284 SET_NETDEV_DEV(dev, &pdev->dev); 285 286 /* Reset card. Who knows what dain-bramaged state it was left in. */ 287 { 288 unsigned long reset_start_time = jiffies; 289 290 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); 291 292 /* This looks like a horrible timing loop, but it should never take 293 more than a few cycles. 294 */ 295 while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0) 296 /* Limit wait: '2' avoids jiffy roll-over. */ 297 if (jiffies - reset_start_time > 2) { 298 dev_err(&pdev->dev, 299 "Card failure (no reset ack).\n"); 300 goto err_out_free_netdev; 301 } 302 303 outb(0xff, ioaddr + EN0_ISR); /* Ack all intr. */ 304 } 305 306 /* Read the 16 bytes of station address PROM. 307 We must first initialize registers, similar to NS8390_init(eifdev, 0). 308 We can't reliably read the SAPROM address without this. 309 (I learned the hard way!). */ 310 { 311 struct {unsigned char value, offset; } program_seq[] = { 312 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ 313 {0x49, EN0_DCFG}, /* Set word-wide access. */ 314 {0x00, EN0_RCNTLO}, /* Clear the count regs. */ 315 {0x00, EN0_RCNTHI}, 316 {0x00, EN0_IMR}, /* Mask completion irq. */ 317 {0xFF, EN0_ISR}, 318 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ 319 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ 320 {32, EN0_RCNTLO}, 321 {0x00, EN0_RCNTHI}, 322 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ 323 {0x00, EN0_RSARHI}, 324 {E8390_RREAD+E8390_START, E8390_CMD}, 325 }; 326 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 327 outb(program_seq[i].value, ioaddr + program_seq[i].offset); 328 329 } 330 331 /* Note: all PCI cards have at least 16 bit access, so we don't have 332 to check for 8 bit cards. Most cards permit 32 bit access. */ 333 if (flags & ONLY_32BIT_IO) { 334 for (i = 0; i < 4 ; i++) 335 ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT)); 336 } else 337 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++) 338 SA_prom[i] = inb(ioaddr + NE_DATAPORT); 339 340 /* We always set the 8390 registers for word mode. */ 341 outb(0x49, ioaddr + EN0_DCFG); 342 start_page = NESM_START_PG; 343 344 stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG; 345 346 /* Set up the rest of the parameters. */ 347 dev->irq = irq; 348 dev->base_addr = ioaddr; 349 pci_set_drvdata(pdev, dev); 350 351 ei_status.name = pci_clone_list[chip_idx].name; 352 ei_status.tx_start_page = start_page; 353 ei_status.stop_page = stop_page; 354 ei_status.word16 = 1; 355 ei_status.ne2k_flags = flags; 356 if (fnd_cnt < MAX_UNITS) { 357 if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX)) 358 ei_status.ne2k_flags |= FORCE_FDX; 359 } 360 361 ei_status.rx_start_page = start_page + TX_PAGES; 362 #ifdef PACKETBUF_MEMSIZE 363 /* Allow the packet buffer size to be overridden by know-it-alls. */ 364 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; 365 #endif 366 367 ei_status.reset_8390 = &ne2k_pci_reset_8390; 368 ei_status.block_input = &ne2k_pci_block_input; 369 ei_status.block_output = &ne2k_pci_block_output; 370 ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr; 371 ei_status.priv = (unsigned long) pdev; 372 373 dev->ethtool_ops = &ne2k_pci_ethtool_ops; 374 NS8390_init(dev, 0); 375 376 memcpy(dev->dev_addr, SA_prom, dev->addr_len); 377 378 i = register_netdev(dev); 379 if (i) 380 goto err_out_free_netdev; 381 382 printk("%s: %s found at %#lx, IRQ %d, %pM.\n", 383 dev->name, pci_clone_list[chip_idx].name, ioaddr, dev->irq, 384 dev->dev_addr); 385 386 return 0; 387 388 err_out_free_netdev: 389 free_netdev (dev); 390 err_out_free_res: 391 release_region (ioaddr, NE_IO_EXTENT); 392 pci_set_drvdata (pdev, NULL); 393 return -ENODEV; 394 395 } 396 397 /* 398 * Magic incantation sequence for full duplex on the supported cards. 399 */ 400 static inline int set_realtek_fdx(struct net_device *dev) 401 { 402 long ioaddr = dev->base_addr; 403 404 outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */ 405 outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */ 406 outb(0x40, ioaddr + 0x06); /* Enable full duplex */ 407 outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */ 408 outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */ 409 return 0; 410 } 411 412 static inline int set_holtek_fdx(struct net_device *dev) 413 { 414 long ioaddr = dev->base_addr; 415 416 outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20); 417 return 0; 418 } 419 420 static int ne2k_pci_set_fdx(struct net_device *dev) 421 { 422 if (ei_status.ne2k_flags & REALTEK_FDX) 423 return set_realtek_fdx(dev); 424 else if (ei_status.ne2k_flags & HOLTEK_FDX) 425 return set_holtek_fdx(dev); 426 427 return -EOPNOTSUPP; 428 } 429 430 static int ne2k_pci_open(struct net_device *dev) 431 { 432 int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED, dev->name, dev); 433 if (ret) 434 return ret; 435 436 if (ei_status.ne2k_flags & FORCE_FDX) 437 ne2k_pci_set_fdx(dev); 438 439 ei_open(dev); 440 return 0; 441 } 442 443 static int ne2k_pci_close(struct net_device *dev) 444 { 445 ei_close(dev); 446 free_irq(dev->irq, dev); 447 return 0; 448 } 449 450 /* Hard reset the card. This used to pause for the same period that a 451 8390 reset command required, but that shouldn't be necessary. */ 452 static void ne2k_pci_reset_8390(struct net_device *dev) 453 { 454 unsigned long reset_start_time = jiffies; 455 456 if (debug > 1) printk("%s: Resetting the 8390 t=%ld...", 457 dev->name, jiffies); 458 459 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 460 461 ei_status.txing = 0; 462 ei_status.dmaing = 0; 463 464 /* This check _should_not_ be necessary, omit eventually. */ 465 while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) 466 if (jiffies - reset_start_time > 2) { 467 printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name); 468 break; 469 } 470 outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ 471 } 472 473 /* Grab the 8390 specific header. Similar to the block_input routine, but 474 we don't need to be concerned with ring wrap as the header will be at 475 the start of a page, so we optimize accordingly. */ 476 477 static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) 478 { 479 480 long nic_base = dev->base_addr; 481 482 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 483 if (ei_status.dmaing) { 484 printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr " 485 "[DMAstat:%d][irqlock:%d].\n", 486 dev->name, ei_status.dmaing, ei_status.irqlock); 487 return; 488 } 489 490 ei_status.dmaing |= 0x01; 491 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 492 outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); 493 outb(0, nic_base + EN0_RCNTHI); 494 outb(0, nic_base + EN0_RSARLO); /* On page boundary */ 495 outb(ring_page, nic_base + EN0_RSARHI); 496 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 497 498 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 499 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); 500 } else { 501 *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT)); 502 le16_to_cpus(&hdr->count); 503 } 504 505 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 506 ei_status.dmaing &= ~0x01; 507 } 508 509 /* Block input and output, similar to the Crynwr packet driver. If you 510 are porting to a new ethercard, look at the packet driver source for hints. 511 The NEx000 doesn't share the on-board packet memory -- you have to put 512 the packet out through the "remote DMA" dataport using outb. */ 513 514 static void ne2k_pci_block_input(struct net_device *dev, int count, 515 struct sk_buff *skb, int ring_offset) 516 { 517 long nic_base = dev->base_addr; 518 char *buf = skb->data; 519 520 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 521 if (ei_status.dmaing) { 522 printk("%s: DMAing conflict in ne2k_pci_block_input " 523 "[DMAstat:%d][irqlock:%d].\n", 524 dev->name, ei_status.dmaing, ei_status.irqlock); 525 return; 526 } 527 ei_status.dmaing |= 0x01; 528 if (ei_status.ne2k_flags & ONLY_32BIT_IO) 529 count = (count + 3) & 0xFFFC; 530 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 531 outb(count & 0xff, nic_base + EN0_RCNTLO); 532 outb(count >> 8, nic_base + EN0_RCNTHI); 533 outb(ring_offset & 0xff, nic_base + EN0_RSARLO); 534 outb(ring_offset >> 8, nic_base + EN0_RSARHI); 535 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 536 537 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 538 insw(NE_BASE + NE_DATAPORT,buf,count>>1); 539 if (count & 0x01) { 540 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 541 } 542 } else { 543 insl(NE_BASE + NE_DATAPORT, buf, count>>2); 544 if (count & 3) { 545 buf += count & ~3; 546 if (count & 2) { 547 __le16 *b = (__le16 *)buf; 548 549 *b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT)); 550 buf = (char *)b; 551 } 552 if (count & 1) 553 *buf = inb(NE_BASE + NE_DATAPORT); 554 } 555 } 556 557 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 558 ei_status.dmaing &= ~0x01; 559 } 560 561 static void ne2k_pci_block_output(struct net_device *dev, int count, 562 const unsigned char *buf, const int start_page) 563 { 564 long nic_base = NE_BASE; 565 unsigned long dma_start; 566 567 /* On little-endian it's always safe to round the count up for 568 word writes. */ 569 if (ei_status.ne2k_flags & ONLY_32BIT_IO) 570 count = (count + 3) & 0xFFFC; 571 else 572 if (count & 0x01) 573 count++; 574 575 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 576 if (ei_status.dmaing) { 577 printk("%s: DMAing conflict in ne2k_pci_block_output." 578 "[DMAstat:%d][irqlock:%d]\n", 579 dev->name, ei_status.dmaing, ei_status.irqlock); 580 return; 581 } 582 ei_status.dmaing |= 0x01; 583 /* We should already be in page 0, but to be safe... */ 584 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 585 586 #ifdef NE8390_RW_BUGFIX 587 /* Handle the read-before-write bug the same way as the 588 Crynwr packet driver -- the NatSemi method doesn't work. 589 Actually this doesn't always work either, but if you have 590 problems with your NEx000 this is better than nothing! */ 591 outb(0x42, nic_base + EN0_RCNTLO); 592 outb(0x00, nic_base + EN0_RCNTHI); 593 outb(0x42, nic_base + EN0_RSARLO); 594 outb(0x00, nic_base + EN0_RSARHI); 595 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 596 #endif 597 outb(ENISR_RDC, nic_base + EN0_ISR); 598 599 /* Now the normal output. */ 600 outb(count & 0xff, nic_base + EN0_RCNTLO); 601 outb(count >> 8, nic_base + EN0_RCNTHI); 602 outb(0x00, nic_base + EN0_RSARLO); 603 outb(start_page, nic_base + EN0_RSARHI); 604 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 605 if (ei_status.ne2k_flags & ONLY_16BIT_IO) { 606 outsw(NE_BASE + NE_DATAPORT, buf, count>>1); 607 } else { 608 outsl(NE_BASE + NE_DATAPORT, buf, count>>2); 609 if (count & 3) { 610 buf += count & ~3; 611 if (count & 2) { 612 __le16 *b = (__le16 *)buf; 613 614 outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT); 615 buf = (char *)b; 616 } 617 } 618 } 619 620 dma_start = jiffies; 621 622 while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) 623 if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */ 624 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name); 625 ne2k_pci_reset_8390(dev); 626 NS8390_init(dev,1); 627 break; 628 } 629 630 outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ 631 ei_status.dmaing &= ~0x01; 632 } 633 634 static void ne2k_pci_get_drvinfo(struct net_device *dev, 635 struct ethtool_drvinfo *info) 636 { 637 struct ei_device *ei = netdev_priv(dev); 638 struct pci_dev *pci_dev = (struct pci_dev *) ei->priv; 639 640 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 641 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 642 strlcpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info)); 643 } 644 645 static const struct ethtool_ops ne2k_pci_ethtool_ops = { 646 .get_drvinfo = ne2k_pci_get_drvinfo, 647 }; 648 649 static void ne2k_pci_remove_one(struct pci_dev *pdev) 650 { 651 struct net_device *dev = pci_get_drvdata(pdev); 652 653 BUG_ON(!dev); 654 unregister_netdev(dev); 655 release_region(dev->base_addr, NE_IO_EXTENT); 656 free_netdev(dev); 657 pci_disable_device(pdev); 658 pci_set_drvdata(pdev, NULL); 659 } 660 661 #ifdef CONFIG_PM 662 static int ne2k_pci_suspend (struct pci_dev *pdev, pm_message_t state) 663 { 664 struct net_device *dev = pci_get_drvdata (pdev); 665 666 netif_device_detach(dev); 667 pci_save_state(pdev); 668 pci_disable_device(pdev); 669 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 670 671 return 0; 672 } 673 674 static int ne2k_pci_resume (struct pci_dev *pdev) 675 { 676 struct net_device *dev = pci_get_drvdata (pdev); 677 int rc; 678 679 pci_set_power_state(pdev, PCI_D0); 680 pci_restore_state(pdev); 681 682 rc = pci_enable_device(pdev); 683 if (rc) 684 return rc; 685 686 NS8390_init(dev, 1); 687 netif_device_attach(dev); 688 689 return 0; 690 } 691 692 #endif /* CONFIG_PM */ 693 694 695 static struct pci_driver ne2k_driver = { 696 .name = DRV_NAME, 697 .probe = ne2k_pci_init_one, 698 .remove = ne2k_pci_remove_one, 699 .id_table = ne2k_pci_tbl, 700 #ifdef CONFIG_PM 701 .suspend = ne2k_pci_suspend, 702 .resume = ne2k_pci_resume, 703 #endif /* CONFIG_PM */ 704 705 }; 706 707 708 static int __init ne2k_pci_init(void) 709 { 710 /* when a module, this is printed whether or not devices are found in probe */ 711 #ifdef MODULE 712 printk(version); 713 #endif 714 return pci_register_driver(&ne2k_driver); 715 } 716 717 718 static void __exit ne2k_pci_cleanup(void) 719 { 720 pci_unregister_driver (&ne2k_driver); 721 } 722 723 module_init(ne2k_pci_init); 724 module_exit(ne2k_pci_cleanup); 725