1 /******************************************************************************* 2 * 3 * Linux ThunderLAN Driver 4 * 5 * tlan.c 6 * by James Banks 7 * 8 * (C) 1997-1998 Caldera, Inc. 9 * (C) 1998 James Banks 10 * (C) 1999-2001 Torben Mathiasen 11 * (C) 2002 Samuel Chessman 12 * 13 * This software may be used and distributed according to the terms 14 * of the GNU General Public License, incorporated herein by reference. 15 * 16 ** Useful (if not required) reading: 17 * 18 * Texas Instruments, ThunderLAN Programmer's Guide, 19 * TI Literature Number SPWU013A 20 * available in PDF format from www.ti.com 21 * Level One, LXT901 and LXT970 Data Sheets 22 * available in PDF format from www.level1.com 23 * National Semiconductor, DP83840A Data Sheet 24 * available in PDF format from www.national.com 25 * Microchip Technology, 24C01A/02A/04A Data Sheet 26 * available in PDF format from www.microchip.com 27 * 28 ******************************************************************************/ 29 30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 31 32 #include <linux/hardirq.h> 33 #include <linux/module.h> 34 #include <linux/init.h> 35 #include <linux/interrupt.h> 36 #include <linux/ioport.h> 37 #include <linux/eisa.h> 38 #include <linux/pci.h> 39 #include <linux/dma-mapping.h> 40 #include <linux/netdevice.h> 41 #include <linux/etherdevice.h> 42 #include <linux/delay.h> 43 #include <linux/spinlock.h> 44 #include <linux/workqueue.h> 45 #include <linux/mii.h> 46 47 #include "tlan.h" 48 49 50 /* For removing EISA devices */ 51 static struct net_device *tlan_eisa_devices; 52 53 static int tlan_devices_installed; 54 55 /* Set speed, duplex and aui settings */ 56 static int aui[MAX_TLAN_BOARDS]; 57 static int duplex[MAX_TLAN_BOARDS]; 58 static int speed[MAX_TLAN_BOARDS]; 59 static int boards_found; 60 module_param_array(aui, int, NULL, 0); 61 module_param_array(duplex, int, NULL, 0); 62 module_param_array(speed, int, NULL, 0); 63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)"); 64 MODULE_PARM_DESC(duplex, 65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)"); 66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)"); 67 68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>"); 69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters"); 70 MODULE_LICENSE("GPL"); 71 72 /* Turn on debugging. See Documentation/networking/tlan.txt for details */ 73 static int debug; 74 module_param(debug, int, 0); 75 MODULE_PARM_DESC(debug, "ThunderLAN debug mask"); 76 77 static const char tlan_signature[] = "TLAN"; 78 static const char tlan_banner[] = "ThunderLAN driver v1.17\n"; 79 static int tlan_have_pci; 80 static int tlan_have_eisa; 81 82 static const char * const media[] = { 83 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD", 84 "100BaseTx-FD", "100BaseT4", NULL 85 }; 86 87 static struct board { 88 const char *device_label; 89 u32 flags; 90 u16 addr_ofs; 91 } board_info[] = { 92 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 93 { "Compaq Netelligent 10/100 TX PCI UTP", 94 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 95 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, 96 { "Compaq NetFlex-3/P", 97 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, 98 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, 99 { "Compaq Netelligent Integrated 10/100 TX UTP", 100 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 101 { "Compaq Netelligent Dual 10/100 TX PCI UTP", 102 TLAN_ADAPTER_NONE, 0x83 }, 103 { "Compaq Netelligent 10/100 TX Embedded UTP", 104 TLAN_ADAPTER_NONE, 0x83 }, 105 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 }, 106 { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED | 107 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 }, 108 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED | 109 TLAN_ADAPTER_USE_INTERN_10, 0xf8 }, 110 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 111 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 }, 112 { "Compaq NetFlex-3/E", 113 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */ 114 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, 115 { "Compaq NetFlex-3/E", 116 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */ 117 }; 118 119 static const struct pci_device_id tlan_pci_tbl[] = { 120 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10, 121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100, 123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, 124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I, 125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, 126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER, 127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 }, 128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B, 129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, 130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI, 131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, 132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D, 133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 }, 134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I, 135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 }, 136 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183, 137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 }, 138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325, 139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 }, 140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326, 141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 }, 142 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100, 143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 }, 144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2, 145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 }, 146 { 0,} 147 }; 148 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl); 149 150 static void tlan_eisa_probe(void); 151 static void tlan_eisa_cleanup(void); 152 static int tlan_init(struct net_device *); 153 static int tlan_open(struct net_device *dev); 154 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *); 155 static irqreturn_t tlan_handle_interrupt(int, void *); 156 static int tlan_close(struct net_device *); 157 static struct net_device_stats *tlan_get_stats(struct net_device *); 158 static void tlan_set_multicast_list(struct net_device *); 159 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 160 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, 161 int irq, int rev, const struct pci_device_id *ent); 162 static void tlan_tx_timeout(struct net_device *dev); 163 static void tlan_tx_timeout_work(struct work_struct *work); 164 static int tlan_init_one(struct pci_dev *pdev, 165 const struct pci_device_id *ent); 166 167 static u32 tlan_handle_tx_eof(struct net_device *, u16); 168 static u32 tlan_handle_stat_overflow(struct net_device *, u16); 169 static u32 tlan_handle_rx_eof(struct net_device *, u16); 170 static u32 tlan_handle_dummy(struct net_device *, u16); 171 static u32 tlan_handle_tx_eoc(struct net_device *, u16); 172 static u32 tlan_handle_status_check(struct net_device *, u16); 173 static u32 tlan_handle_rx_eoc(struct net_device *, u16); 174 175 static void tlan_timer(unsigned long); 176 177 static void tlan_reset_lists(struct net_device *); 178 static void tlan_free_lists(struct net_device *); 179 static void tlan_print_dio(u16); 180 static void tlan_print_list(struct tlan_list *, char *, int); 181 static void tlan_read_and_clear_stats(struct net_device *, int); 182 static void tlan_reset_adapter(struct net_device *); 183 static void tlan_finish_reset(struct net_device *); 184 static void tlan_set_mac(struct net_device *, int areg, char *mac); 185 186 static void tlan_phy_print(struct net_device *); 187 static void tlan_phy_detect(struct net_device *); 188 static void tlan_phy_power_down(struct net_device *); 189 static void tlan_phy_power_up(struct net_device *); 190 static void tlan_phy_reset(struct net_device *); 191 static void tlan_phy_start_link(struct net_device *); 192 static void tlan_phy_finish_auto_neg(struct net_device *); 193 static void tlan_phy_monitor(unsigned long); 194 195 /* 196 static int tlan_phy_nop(struct net_device *); 197 static int tlan_phy_internal_check(struct net_device *); 198 static int tlan_phy_internal_service(struct net_device *); 199 static int tlan_phy_dp83840a_check(struct net_device *); 200 */ 201 202 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *); 203 static void tlan_mii_send_data(u16, u32, unsigned); 204 static void tlan_mii_sync(u16); 205 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16); 206 207 static void tlan_ee_send_start(u16); 208 static int tlan_ee_send_byte(u16, u8, int); 209 static void tlan_ee_receive_byte(u16, u8 *, int); 210 static int tlan_ee_read_byte(struct net_device *, u8, u8 *); 211 212 213 static inline void 214 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb) 215 { 216 unsigned long addr = (unsigned long)skb; 217 tag->buffer[9].address = addr; 218 tag->buffer[8].address = upper_32_bits(addr); 219 } 220 221 static inline struct sk_buff * 222 tlan_get_skb(const struct tlan_list *tag) 223 { 224 unsigned long addr; 225 226 addr = tag->buffer[9].address; 227 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16; 228 return (struct sk_buff *) addr; 229 } 230 231 static u32 232 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = { 233 NULL, 234 tlan_handle_tx_eof, 235 tlan_handle_stat_overflow, 236 tlan_handle_rx_eof, 237 tlan_handle_dummy, 238 tlan_handle_tx_eoc, 239 tlan_handle_status_check, 240 tlan_handle_rx_eoc 241 }; 242 243 static inline void 244 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type) 245 { 246 struct tlan_priv *priv = netdev_priv(dev); 247 unsigned long flags = 0; 248 249 if (!in_irq()) 250 spin_lock_irqsave(&priv->lock, flags); 251 if (priv->timer.function != NULL && 252 priv->timer_type != TLAN_TIMER_ACTIVITY) { 253 if (!in_irq()) 254 spin_unlock_irqrestore(&priv->lock, flags); 255 return; 256 } 257 priv->timer.function = tlan_timer; 258 if (!in_irq()) 259 spin_unlock_irqrestore(&priv->lock, flags); 260 261 priv->timer.data = (unsigned long) dev; 262 priv->timer_set_at = jiffies; 263 priv->timer_type = type; 264 mod_timer(&priv->timer, jiffies + ticks); 265 266 } 267 268 269 /***************************************************************************** 270 ****************************************************************************** 271 272 ThunderLAN driver primary functions 273 274 these functions are more or less common to all linux network drivers. 275 276 ****************************************************************************** 277 *****************************************************************************/ 278 279 280 281 282 283 /*************************************************************** 284 * tlan_remove_one 285 * 286 * Returns: 287 * Nothing 288 * Parms: 289 * None 290 * 291 * Goes through the TLanDevices list and frees the device 292 * structs and memory associated with each device (lists 293 * and buffers). It also ureserves the IO port regions 294 * associated with this device. 295 * 296 **************************************************************/ 297 298 299 static void tlan_remove_one(struct pci_dev *pdev) 300 { 301 struct net_device *dev = pci_get_drvdata(pdev); 302 struct tlan_priv *priv = netdev_priv(dev); 303 304 unregister_netdev(dev); 305 306 if (priv->dma_storage) { 307 pci_free_consistent(priv->pci_dev, 308 priv->dma_size, priv->dma_storage, 309 priv->dma_storage_dma); 310 } 311 312 #ifdef CONFIG_PCI 313 pci_release_regions(pdev); 314 #endif 315 316 free_netdev(dev); 317 318 cancel_work_sync(&priv->tlan_tqueue); 319 } 320 321 static void tlan_start(struct net_device *dev) 322 { 323 tlan_reset_lists(dev); 324 /* NOTE: It might not be necessary to read the stats before a 325 reset if you don't care what the values are. 326 */ 327 tlan_read_and_clear_stats(dev, TLAN_IGNORE); 328 tlan_reset_adapter(dev); 329 netif_wake_queue(dev); 330 } 331 332 static void tlan_stop(struct net_device *dev) 333 { 334 struct tlan_priv *priv = netdev_priv(dev); 335 336 del_timer_sync(&priv->media_timer); 337 tlan_read_and_clear_stats(dev, TLAN_RECORD); 338 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD); 339 /* Reset and power down phy */ 340 tlan_reset_adapter(dev); 341 if (priv->timer.function != NULL) { 342 del_timer_sync(&priv->timer); 343 priv->timer.function = NULL; 344 } 345 } 346 347 #ifdef CONFIG_PM 348 349 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state) 350 { 351 struct net_device *dev = pci_get_drvdata(pdev); 352 353 if (netif_running(dev)) 354 tlan_stop(dev); 355 356 netif_device_detach(dev); 357 pci_save_state(pdev); 358 pci_disable_device(pdev); 359 pci_wake_from_d3(pdev, false); 360 pci_set_power_state(pdev, PCI_D3hot); 361 362 return 0; 363 } 364 365 static int tlan_resume(struct pci_dev *pdev) 366 { 367 struct net_device *dev = pci_get_drvdata(pdev); 368 int rc = pci_enable_device(pdev); 369 370 if (rc) 371 return rc; 372 pci_restore_state(pdev); 373 pci_enable_wake(pdev, PCI_D0, 0); 374 netif_device_attach(dev); 375 376 if (netif_running(dev)) 377 tlan_start(dev); 378 379 return 0; 380 } 381 382 #else /* CONFIG_PM */ 383 384 #define tlan_suspend NULL 385 #define tlan_resume NULL 386 387 #endif /* CONFIG_PM */ 388 389 390 static struct pci_driver tlan_driver = { 391 .name = "tlan", 392 .id_table = tlan_pci_tbl, 393 .probe = tlan_init_one, 394 .remove = tlan_remove_one, 395 .suspend = tlan_suspend, 396 .resume = tlan_resume, 397 }; 398 399 static int __init tlan_probe(void) 400 { 401 int rc = -ENODEV; 402 403 pr_info("%s", tlan_banner); 404 405 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n"); 406 407 /* Use new style PCI probing. Now the kernel will 408 do most of this for us */ 409 rc = pci_register_driver(&tlan_driver); 410 411 if (rc != 0) { 412 pr_err("Could not register pci driver\n"); 413 goto err_out_pci_free; 414 } 415 416 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n"); 417 tlan_eisa_probe(); 418 419 pr_info("%d device%s installed, PCI: %d EISA: %d\n", 420 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s", 421 tlan_have_pci, tlan_have_eisa); 422 423 if (tlan_devices_installed == 0) { 424 rc = -ENODEV; 425 goto err_out_pci_unreg; 426 } 427 return 0; 428 429 err_out_pci_unreg: 430 pci_unregister_driver(&tlan_driver); 431 err_out_pci_free: 432 return rc; 433 } 434 435 436 static int tlan_init_one(struct pci_dev *pdev, 437 const struct pci_device_id *ent) 438 { 439 return tlan_probe1(pdev, -1, -1, 0, ent); 440 } 441 442 443 /* 444 *************************************************************** 445 * tlan_probe1 446 * 447 * Returns: 448 * 0 on success, error code on error 449 * Parms: 450 * none 451 * 452 * The name is lower case to fit in with all the rest of 453 * the netcard_probe names. This function looks for 454 * another TLan based adapter, setting it up with the 455 * allocated device struct if one is found. 456 * tlan_probe has been ported to the new net API and 457 * now allocates its own device structure. This function 458 * is also used by modules. 459 * 460 **************************************************************/ 461 462 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev, 463 const struct pci_device_id *ent) 464 { 465 466 struct net_device *dev; 467 struct tlan_priv *priv; 468 u16 device_id; 469 int reg, rc = -ENODEV; 470 471 #ifdef CONFIG_PCI 472 if (pdev) { 473 rc = pci_enable_device(pdev); 474 if (rc) 475 return rc; 476 477 rc = pci_request_regions(pdev, tlan_signature); 478 if (rc) { 479 pr_err("Could not reserve IO regions\n"); 480 goto err_out; 481 } 482 } 483 #endif /* CONFIG_PCI */ 484 485 dev = alloc_etherdev(sizeof(struct tlan_priv)); 486 if (dev == NULL) { 487 rc = -ENOMEM; 488 goto err_out_regions; 489 } 490 SET_NETDEV_DEV(dev, &pdev->dev); 491 492 priv = netdev_priv(dev); 493 494 priv->pci_dev = pdev; 495 priv->dev = dev; 496 497 /* Is this a PCI device? */ 498 if (pdev) { 499 u32 pci_io_base = 0; 500 501 priv->adapter = &board_info[ent->driver_data]; 502 503 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 504 if (rc) { 505 pr_err("No suitable PCI mapping available\n"); 506 goto err_out_free_dev; 507 } 508 509 for (reg = 0; reg <= 5; reg++) { 510 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) { 511 pci_io_base = pci_resource_start(pdev, reg); 512 TLAN_DBG(TLAN_DEBUG_GNRL, 513 "IO mapping is available at %x.\n", 514 pci_io_base); 515 break; 516 } 517 } 518 if (!pci_io_base) { 519 pr_err("No IO mappings available\n"); 520 rc = -EIO; 521 goto err_out_free_dev; 522 } 523 524 dev->base_addr = pci_io_base; 525 dev->irq = pdev->irq; 526 priv->adapter_rev = pdev->revision; 527 pci_set_master(pdev); 528 pci_set_drvdata(pdev, dev); 529 530 } else { /* EISA card */ 531 /* This is a hack. We need to know which board structure 532 * is suited for this adapter */ 533 device_id = inw(ioaddr + EISA_ID2); 534 if (device_id == 0x20F1) { 535 priv->adapter = &board_info[13]; /* NetFlex-3/E */ 536 priv->adapter_rev = 23; /* TLAN 2.3 */ 537 } else { 538 priv->adapter = &board_info[14]; 539 priv->adapter_rev = 10; /* TLAN 1.0 */ 540 } 541 dev->base_addr = ioaddr; 542 dev->irq = irq; 543 } 544 545 /* Kernel parameters */ 546 if (dev->mem_start) { 547 priv->aui = dev->mem_start & 0x01; 548 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0 549 : (dev->mem_start & 0x06) >> 1; 550 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0 551 : (dev->mem_start & 0x18) >> 3; 552 553 if (priv->speed == 0x1) 554 priv->speed = TLAN_SPEED_10; 555 else if (priv->speed == 0x2) 556 priv->speed = TLAN_SPEED_100; 557 558 debug = priv->debug = dev->mem_end; 559 } else { 560 priv->aui = aui[boards_found]; 561 priv->speed = speed[boards_found]; 562 priv->duplex = duplex[boards_found]; 563 priv->debug = debug; 564 } 565 566 /* This will be used when we get an adapter error from 567 * within our irq handler */ 568 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work); 569 570 spin_lock_init(&priv->lock); 571 572 rc = tlan_init(dev); 573 if (rc) { 574 pr_err("Could not set up device\n"); 575 goto err_out_free_dev; 576 } 577 578 rc = register_netdev(dev); 579 if (rc) { 580 pr_err("Could not register device\n"); 581 goto err_out_uninit; 582 } 583 584 585 tlan_devices_installed++; 586 boards_found++; 587 588 /* pdev is NULL if this is an EISA device */ 589 if (pdev) 590 tlan_have_pci++; 591 else { 592 priv->next_device = tlan_eisa_devices; 593 tlan_eisa_devices = dev; 594 tlan_have_eisa++; 595 } 596 597 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n", 598 (int)dev->irq, 599 (int)dev->base_addr, 600 priv->adapter->device_label, 601 priv->adapter_rev); 602 return 0; 603 604 err_out_uninit: 605 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage, 606 priv->dma_storage_dma); 607 err_out_free_dev: 608 free_netdev(dev); 609 err_out_regions: 610 #ifdef CONFIG_PCI 611 if (pdev) 612 pci_release_regions(pdev); 613 err_out: 614 #endif 615 if (pdev) 616 pci_disable_device(pdev); 617 return rc; 618 } 619 620 621 static void tlan_eisa_cleanup(void) 622 { 623 struct net_device *dev; 624 struct tlan_priv *priv; 625 626 while (tlan_have_eisa) { 627 dev = tlan_eisa_devices; 628 priv = netdev_priv(dev); 629 if (priv->dma_storage) { 630 pci_free_consistent(priv->pci_dev, priv->dma_size, 631 priv->dma_storage, 632 priv->dma_storage_dma); 633 } 634 release_region(dev->base_addr, 0x10); 635 unregister_netdev(dev); 636 tlan_eisa_devices = priv->next_device; 637 free_netdev(dev); 638 tlan_have_eisa--; 639 } 640 } 641 642 643 static void __exit tlan_exit(void) 644 { 645 pci_unregister_driver(&tlan_driver); 646 647 if (tlan_have_eisa) 648 tlan_eisa_cleanup(); 649 650 } 651 652 653 /* Module loading/unloading */ 654 module_init(tlan_probe); 655 module_exit(tlan_exit); 656 657 658 659 /************************************************************** 660 * tlan_eisa_probe 661 * 662 * Returns: 0 on success, 1 otherwise 663 * 664 * Parms: None 665 * 666 * 667 * This functions probes for EISA devices and calls 668 * TLan_probe1 when one is found. 669 * 670 *************************************************************/ 671 672 static void __init tlan_eisa_probe(void) 673 { 674 long ioaddr; 675 int rc = -ENODEV; 676 int irq; 677 u16 device_id; 678 679 if (!EISA_bus) { 680 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n"); 681 return; 682 } 683 684 /* Loop through all slots of the EISA bus */ 685 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) { 686 687 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n", 688 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID)); 689 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n", 690 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2)); 691 692 693 TLAN_DBG(TLAN_DEBUG_PROBE, 694 "Probing for EISA adapter at IO: 0x%4x : ", 695 (int) ioaddr); 696 if (request_region(ioaddr, 0x10, tlan_signature) == NULL) 697 goto out; 698 699 if (inw(ioaddr + EISA_ID) != 0x110E) { 700 release_region(ioaddr, 0x10); 701 goto out; 702 } 703 704 device_id = inw(ioaddr + EISA_ID2); 705 if (device_id != 0x20F1 && device_id != 0x40F1) { 706 release_region(ioaddr, 0x10); 707 goto out; 708 } 709 710 /* check if adapter is enabled */ 711 if (inb(ioaddr + EISA_CR) != 0x1) { 712 release_region(ioaddr, 0x10); 713 goto out2; 714 } 715 716 if (debug == 0x10) 717 pr_info("Found one\n"); 718 719 720 /* Get irq from board */ 721 switch (inb(ioaddr + 0xcc0)) { 722 case(0x10): 723 irq = 5; 724 break; 725 case(0x20): 726 irq = 9; 727 break; 728 case(0x40): 729 irq = 10; 730 break; 731 case(0x80): 732 irq = 11; 733 break; 734 default: 735 goto out; 736 } 737 738 739 /* Setup the newly found eisa adapter */ 740 rc = tlan_probe1(NULL, ioaddr, irq, 741 12, NULL); 742 continue; 743 744 out: 745 if (debug == 0x10) 746 pr_info("None found\n"); 747 continue; 748 749 out2: 750 if (debug == 0x10) 751 pr_info("Card found but it is not enabled, skipping\n"); 752 continue; 753 754 } 755 756 } 757 758 #ifdef CONFIG_NET_POLL_CONTROLLER 759 static void tlan_poll(struct net_device *dev) 760 { 761 disable_irq(dev->irq); 762 tlan_handle_interrupt(dev->irq, dev); 763 enable_irq(dev->irq); 764 } 765 #endif 766 767 static const struct net_device_ops tlan_netdev_ops = { 768 .ndo_open = tlan_open, 769 .ndo_stop = tlan_close, 770 .ndo_start_xmit = tlan_start_tx, 771 .ndo_tx_timeout = tlan_tx_timeout, 772 .ndo_get_stats = tlan_get_stats, 773 .ndo_set_rx_mode = tlan_set_multicast_list, 774 .ndo_do_ioctl = tlan_ioctl, 775 .ndo_change_mtu = eth_change_mtu, 776 .ndo_set_mac_address = eth_mac_addr, 777 .ndo_validate_addr = eth_validate_addr, 778 #ifdef CONFIG_NET_POLL_CONTROLLER 779 .ndo_poll_controller = tlan_poll, 780 #endif 781 }; 782 783 static void tlan_get_drvinfo(struct net_device *dev, 784 struct ethtool_drvinfo *info) 785 { 786 struct tlan_priv *priv = netdev_priv(dev); 787 788 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 789 if (priv->pci_dev) 790 strlcpy(info->bus_info, pci_name(priv->pci_dev), 791 sizeof(info->bus_info)); 792 else 793 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info)); 794 } 795 796 static int tlan_get_eeprom_len(struct net_device *dev) 797 { 798 return TLAN_EEPROM_SIZE; 799 } 800 801 static int tlan_get_eeprom(struct net_device *dev, 802 struct ethtool_eeprom *eeprom, u8 *data) 803 { 804 int i; 805 806 for (i = 0; i < TLAN_EEPROM_SIZE; i++) 807 if (tlan_ee_read_byte(dev, i, &data[i])) 808 return -EIO; 809 810 return 0; 811 } 812 813 static const struct ethtool_ops tlan_ethtool_ops = { 814 .get_drvinfo = tlan_get_drvinfo, 815 .get_link = ethtool_op_get_link, 816 .get_eeprom_len = tlan_get_eeprom_len, 817 .get_eeprom = tlan_get_eeprom, 818 }; 819 820 /*************************************************************** 821 * tlan_init 822 * 823 * Returns: 824 * 0 on success, error code otherwise. 825 * Parms: 826 * dev The structure of the device to be 827 * init'ed. 828 * 829 * This function completes the initialization of the 830 * device structure and driver. It reserves the IO 831 * addresses, allocates memory for the lists and bounce 832 * buffers, retrieves the MAC address from the eeprom 833 * and assignes the device's methods. 834 * 835 **************************************************************/ 836 837 static int tlan_init(struct net_device *dev) 838 { 839 int dma_size; 840 int err; 841 int i; 842 struct tlan_priv *priv; 843 844 priv = netdev_priv(dev); 845 846 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS) 847 * (sizeof(struct tlan_list)); 848 priv->dma_storage = pci_alloc_consistent(priv->pci_dev, 849 dma_size, 850 &priv->dma_storage_dma); 851 priv->dma_size = dma_size; 852 853 if (priv->dma_storage == NULL) { 854 pr_err("Could not allocate lists and buffers for %s\n", 855 dev->name); 856 return -ENOMEM; 857 } 858 memset(priv->dma_storage, 0, dma_size); 859 priv->rx_list = (struct tlan_list *) 860 ALIGN((unsigned long)priv->dma_storage, 8); 861 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8); 862 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS; 863 priv->tx_list_dma = 864 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS; 865 866 err = 0; 867 for (i = 0; i < ETH_ALEN; i++) 868 err |= tlan_ee_read_byte(dev, 869 (u8) priv->adapter->addr_ofs + i, 870 (u8 *) &dev->dev_addr[i]); 871 if (err) { 872 pr_err("%s: Error reading MAC from eeprom: %d\n", 873 dev->name, err); 874 } 875 /* Olicom OC-2325/OC-2326 have the address byte-swapped */ 876 if (priv->adapter->addr_ofs == 0xf8) { 877 for (i = 0; i < ETH_ALEN; i += 2) { 878 char tmp = dev->dev_addr[i]; 879 dev->dev_addr[i] = dev->dev_addr[i + 1]; 880 dev->dev_addr[i + 1] = tmp; 881 } 882 } 883 884 netif_carrier_off(dev); 885 886 /* Device methods */ 887 dev->netdev_ops = &tlan_netdev_ops; 888 dev->ethtool_ops = &tlan_ethtool_ops; 889 dev->watchdog_timeo = TX_TIMEOUT; 890 891 return 0; 892 893 } 894 895 896 897 898 /*************************************************************** 899 * tlan_open 900 * 901 * Returns: 902 * 0 on success, error code otherwise. 903 * Parms: 904 * dev Structure of device to be opened. 905 * 906 * This routine puts the driver and TLAN adapter in a 907 * state where it is ready to send and receive packets. 908 * It allocates the IRQ, resets and brings the adapter 909 * out of reset, and allows interrupts. It also delays 910 * the startup for autonegotiation or sends a Rx GO 911 * command to the adapter, as appropriate. 912 * 913 **************************************************************/ 914 915 static int tlan_open(struct net_device *dev) 916 { 917 struct tlan_priv *priv = netdev_priv(dev); 918 int err; 919 920 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION); 921 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED, 922 dev->name, dev); 923 924 if (err) { 925 netdev_err(dev, "Cannot open because IRQ %d is already in use\n", 926 dev->irq); 927 return err; 928 } 929 930 init_timer(&priv->timer); 931 init_timer(&priv->media_timer); 932 933 tlan_start(dev); 934 935 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n", 936 dev->name, priv->tlan_rev); 937 938 return 0; 939 940 } 941 942 943 944 /************************************************************** 945 * tlan_ioctl 946 * 947 * Returns: 948 * 0 on success, error code otherwise 949 * Params: 950 * dev structure of device to receive ioctl. 951 * 952 * rq ifreq structure to hold userspace data. 953 * 954 * cmd ioctl command. 955 * 956 * 957 *************************************************************/ 958 959 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 960 { 961 struct tlan_priv *priv = netdev_priv(dev); 962 struct mii_ioctl_data *data = if_mii(rq); 963 u32 phy = priv->phy[priv->phy_num]; 964 965 if (!priv->phy_online) 966 return -EAGAIN; 967 968 switch (cmd) { 969 case SIOCGMIIPHY: /* get address of MII PHY in use. */ 970 data->phy_id = phy; 971 972 973 case SIOCGMIIREG: /* read MII PHY register. */ 974 tlan_mii_read_reg(dev, data->phy_id & 0x1f, 975 data->reg_num & 0x1f, &data->val_out); 976 return 0; 977 978 979 case SIOCSMIIREG: /* write MII PHY register. */ 980 tlan_mii_write_reg(dev, data->phy_id & 0x1f, 981 data->reg_num & 0x1f, data->val_in); 982 return 0; 983 default: 984 return -EOPNOTSUPP; 985 } 986 } 987 988 989 /*************************************************************** 990 * tlan_tx_timeout 991 * 992 * Returns: nothing 993 * 994 * Params: 995 * dev structure of device which timed out 996 * during transmit. 997 * 998 **************************************************************/ 999 1000 static void tlan_tx_timeout(struct net_device *dev) 1001 { 1002 1003 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name); 1004 1005 /* Ok so we timed out, lets see what we can do about it...*/ 1006 tlan_free_lists(dev); 1007 tlan_reset_lists(dev); 1008 tlan_read_and_clear_stats(dev, TLAN_IGNORE); 1009 tlan_reset_adapter(dev); 1010 netif_trans_update(dev); /* prevent tx timeout */ 1011 netif_wake_queue(dev); 1012 1013 } 1014 1015 1016 /*************************************************************** 1017 * tlan_tx_timeout_work 1018 * 1019 * Returns: nothing 1020 * 1021 * Params: 1022 * work work item of device which timed out 1023 * 1024 **************************************************************/ 1025 1026 static void tlan_tx_timeout_work(struct work_struct *work) 1027 { 1028 struct tlan_priv *priv = 1029 container_of(work, struct tlan_priv, tlan_tqueue); 1030 1031 tlan_tx_timeout(priv->dev); 1032 } 1033 1034 1035 1036 /*************************************************************** 1037 * tlan_start_tx 1038 * 1039 * Returns: 1040 * 0 on success, non-zero on failure. 1041 * Parms: 1042 * skb A pointer to the sk_buff containing the 1043 * frame to be sent. 1044 * dev The device to send the data on. 1045 * 1046 * This function adds a frame to the Tx list to be sent 1047 * ASAP. First it verifies that the adapter is ready and 1048 * there is room in the queue. Then it sets up the next 1049 * available list, copies the frame to the corresponding 1050 * buffer. If the adapter Tx channel is idle, it gives 1051 * the adapter a Tx Go command on the list, otherwise it 1052 * sets the forward address of the previous list to point 1053 * to this one. Then it frees the sk_buff. 1054 * 1055 **************************************************************/ 1056 1057 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev) 1058 { 1059 struct tlan_priv *priv = netdev_priv(dev); 1060 dma_addr_t tail_list_phys; 1061 struct tlan_list *tail_list; 1062 unsigned long flags; 1063 unsigned int txlen; 1064 1065 if (!priv->phy_online) { 1066 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n", 1067 dev->name); 1068 dev_kfree_skb_any(skb); 1069 return NETDEV_TX_OK; 1070 } 1071 1072 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE)) 1073 return NETDEV_TX_OK; 1074 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE); 1075 1076 tail_list = priv->tx_list + priv->tx_tail; 1077 tail_list_phys = 1078 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail; 1079 1080 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) { 1081 TLAN_DBG(TLAN_DEBUG_TX, 1082 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n", 1083 dev->name, priv->tx_head, priv->tx_tail); 1084 netif_stop_queue(dev); 1085 priv->tx_busy_count++; 1086 return NETDEV_TX_BUSY; 1087 } 1088 1089 tail_list->forward = 0; 1090 1091 tail_list->buffer[0].address = pci_map_single(priv->pci_dev, 1092 skb->data, txlen, 1093 PCI_DMA_TODEVICE); 1094 tlan_store_skb(tail_list, skb); 1095 1096 tail_list->frame_size = (u16) txlen; 1097 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen; 1098 tail_list->buffer[1].count = 0; 1099 tail_list->buffer[1].address = 0; 1100 1101 spin_lock_irqsave(&priv->lock, flags); 1102 tail_list->c_stat = TLAN_CSTAT_READY; 1103 if (!priv->tx_in_progress) { 1104 priv->tx_in_progress = 1; 1105 TLAN_DBG(TLAN_DEBUG_TX, 1106 "TRANSMIT: Starting TX on buffer %d\n", 1107 priv->tx_tail); 1108 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM); 1109 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD); 1110 } else { 1111 TLAN_DBG(TLAN_DEBUG_TX, 1112 "TRANSMIT: Adding buffer %d to TX channel\n", 1113 priv->tx_tail); 1114 if (priv->tx_tail == 0) { 1115 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward 1116 = tail_list_phys; 1117 } else { 1118 (priv->tx_list + (priv->tx_tail - 1))->forward 1119 = tail_list_phys; 1120 } 1121 } 1122 spin_unlock_irqrestore(&priv->lock, flags); 1123 1124 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS); 1125 1126 return NETDEV_TX_OK; 1127 1128 } 1129 1130 1131 1132 1133 /*************************************************************** 1134 * tlan_handle_interrupt 1135 * 1136 * Returns: 1137 * Nothing 1138 * Parms: 1139 * irq The line on which the interrupt 1140 * occurred. 1141 * dev_id A pointer to the device assigned to 1142 * this irq line. 1143 * 1144 * This function handles an interrupt generated by its 1145 * assigned TLAN adapter. The function deactivates 1146 * interrupts on its adapter, records the type of 1147 * interrupt, executes the appropriate subhandler, and 1148 * acknowdges the interrupt to the adapter (thus 1149 * re-enabling adapter interrupts. 1150 * 1151 **************************************************************/ 1152 1153 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id) 1154 { 1155 struct net_device *dev = dev_id; 1156 struct tlan_priv *priv = netdev_priv(dev); 1157 u16 host_int; 1158 u16 type; 1159 1160 spin_lock(&priv->lock); 1161 1162 host_int = inw(dev->base_addr + TLAN_HOST_INT); 1163 type = (host_int & TLAN_HI_IT_MASK) >> 2; 1164 if (type) { 1165 u32 ack; 1166 u32 host_cmd; 1167 1168 outw(host_int, dev->base_addr + TLAN_HOST_INT); 1169 ack = tlan_int_vector[type](dev, host_int); 1170 1171 if (ack) { 1172 host_cmd = TLAN_HC_ACK | ack | (type << 18); 1173 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD); 1174 } 1175 } 1176 1177 spin_unlock(&priv->lock); 1178 1179 return IRQ_RETVAL(type); 1180 } 1181 1182 1183 1184 1185 /*************************************************************** 1186 * tlan_close 1187 * 1188 * Returns: 1189 * An error code. 1190 * Parms: 1191 * dev The device structure of the device to 1192 * close. 1193 * 1194 * This function shuts down the adapter. It records any 1195 * stats, puts the adapter into reset state, deactivates 1196 * its time as needed, and frees the irq it is using. 1197 * 1198 **************************************************************/ 1199 1200 static int tlan_close(struct net_device *dev) 1201 { 1202 tlan_stop(dev); 1203 1204 free_irq(dev->irq, dev); 1205 tlan_free_lists(dev); 1206 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name); 1207 1208 return 0; 1209 1210 } 1211 1212 1213 1214 1215 /*************************************************************** 1216 * tlan_get_stats 1217 * 1218 * Returns: 1219 * A pointer to the device's statistics structure. 1220 * Parms: 1221 * dev The device structure to return the 1222 * stats for. 1223 * 1224 * This function updates the devices statistics by reading 1225 * the TLAN chip's onboard registers. Then it returns the 1226 * address of the statistics structure. 1227 * 1228 **************************************************************/ 1229 1230 static struct net_device_stats *tlan_get_stats(struct net_device *dev) 1231 { 1232 struct tlan_priv *priv = netdev_priv(dev); 1233 int i; 1234 1235 /* Should only read stats if open ? */ 1236 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1237 1238 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name, 1239 priv->rx_eoc_count); 1240 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name, 1241 priv->tx_busy_count); 1242 if (debug & TLAN_DEBUG_GNRL) { 1243 tlan_print_dio(dev->base_addr); 1244 tlan_phy_print(dev); 1245 } 1246 if (debug & TLAN_DEBUG_LIST) { 1247 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) 1248 tlan_print_list(priv->rx_list + i, "RX", i); 1249 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) 1250 tlan_print_list(priv->tx_list + i, "TX", i); 1251 } 1252 1253 return &dev->stats; 1254 1255 } 1256 1257 1258 1259 1260 /*************************************************************** 1261 * tlan_set_multicast_list 1262 * 1263 * Returns: 1264 * Nothing 1265 * Parms: 1266 * dev The device structure to set the 1267 * multicast list for. 1268 * 1269 * This function sets the TLAN adaptor to various receive 1270 * modes. If the IFF_PROMISC flag is set, promiscuous 1271 * mode is acitviated. Otherwise, promiscuous mode is 1272 * turned off. If the IFF_ALLMULTI flag is set, then 1273 * the hash table is set to receive all group addresses. 1274 * Otherwise, the first three multicast addresses are 1275 * stored in AREG_1-3, and the rest are selected via the 1276 * hash table, as necessary. 1277 * 1278 **************************************************************/ 1279 1280 static void tlan_set_multicast_list(struct net_device *dev) 1281 { 1282 struct netdev_hw_addr *ha; 1283 u32 hash1 = 0; 1284 u32 hash2 = 0; 1285 int i; 1286 u32 offset; 1287 u8 tmp; 1288 1289 if (dev->flags & IFF_PROMISC) { 1290 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1291 tlan_dio_write8(dev->base_addr, 1292 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF); 1293 } else { 1294 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1295 tlan_dio_write8(dev->base_addr, 1296 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF); 1297 if (dev->flags & IFF_ALLMULTI) { 1298 for (i = 0; i < 3; i++) 1299 tlan_set_mac(dev, i + 1, NULL); 1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, 1301 0xffffffff); 1302 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, 1303 0xffffffff); 1304 } else { 1305 i = 0; 1306 netdev_for_each_mc_addr(ha, dev) { 1307 if (i < 3) { 1308 tlan_set_mac(dev, i + 1, 1309 (char *) &ha->addr); 1310 } else { 1311 offset = 1312 tlan_hash_func((u8 *)&ha->addr); 1313 if (offset < 32) 1314 hash1 |= (1 << offset); 1315 else 1316 hash2 |= (1 << (offset - 32)); 1317 } 1318 i++; 1319 } 1320 for ( ; i < 3; i++) 1321 tlan_set_mac(dev, i + 1, NULL); 1322 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1); 1323 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2); 1324 } 1325 } 1326 1327 } 1328 1329 1330 1331 /***************************************************************************** 1332 ****************************************************************************** 1333 1334 ThunderLAN driver interrupt vectors and table 1335 1336 please see chap. 4, "Interrupt Handling" of the "ThunderLAN 1337 Programmer's Guide" for more informations on handling interrupts 1338 generated by TLAN based adapters. 1339 1340 ****************************************************************************** 1341 *****************************************************************************/ 1342 1343 1344 1345 1346 /*************************************************************** 1347 * tlan_handle_tx_eof 1348 * 1349 * Returns: 1350 * 1 1351 * Parms: 1352 * dev Device assigned the IRQ that was 1353 * raised. 1354 * host_int The contents of the HOST_INT 1355 * port. 1356 * 1357 * This function handles Tx EOF interrupts which are raised 1358 * by the adapter when it has completed sending the 1359 * contents of a buffer. If detemines which list/buffer 1360 * was completed and resets it. If the buffer was the last 1361 * in the channel (EOC), then the function checks to see if 1362 * another buffer is ready to send, and if so, sends a Tx 1363 * Go command. Finally, the driver activates/continues the 1364 * activity LED. 1365 * 1366 **************************************************************/ 1367 1368 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int) 1369 { 1370 struct tlan_priv *priv = netdev_priv(dev); 1371 int eoc = 0; 1372 struct tlan_list *head_list; 1373 dma_addr_t head_list_phys; 1374 u32 ack = 0; 1375 u16 tmp_c_stat; 1376 1377 TLAN_DBG(TLAN_DEBUG_TX, 1378 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n", 1379 priv->tx_head, priv->tx_tail); 1380 head_list = priv->tx_list + priv->tx_head; 1381 1382 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1383 && (ack < 255)) { 1384 struct sk_buff *skb = tlan_get_skb(head_list); 1385 1386 ack++; 1387 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address, 1388 max(skb->len, 1389 (unsigned int)TLAN_MIN_FRAME_SIZE), 1390 PCI_DMA_TODEVICE); 1391 dev_kfree_skb_any(skb); 1392 head_list->buffer[8].address = 0; 1393 head_list->buffer[9].address = 0; 1394 1395 if (tmp_c_stat & TLAN_CSTAT_EOC) 1396 eoc = 1; 1397 1398 dev->stats.tx_bytes += head_list->frame_size; 1399 1400 head_list->c_stat = TLAN_CSTAT_UNUSED; 1401 netif_start_queue(dev); 1402 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS); 1403 head_list = priv->tx_list + priv->tx_head; 1404 } 1405 1406 if (!ack) 1407 netdev_info(dev, 1408 "Received interrupt for uncompleted TX frame\n"); 1409 1410 if (eoc) { 1411 TLAN_DBG(TLAN_DEBUG_TX, 1412 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n", 1413 priv->tx_head, priv->tx_tail); 1414 head_list = priv->tx_list + priv->tx_head; 1415 head_list_phys = priv->tx_list_dma 1416 + sizeof(struct tlan_list)*priv->tx_head; 1417 if ((head_list->c_stat & TLAN_CSTAT_READY) 1418 == TLAN_CSTAT_READY) { 1419 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1420 ack |= TLAN_HC_GO; 1421 } else { 1422 priv->tx_in_progress = 0; 1423 } 1424 } 1425 1426 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1427 tlan_dio_write8(dev->base_addr, 1428 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1429 if (priv->timer.function == NULL) { 1430 priv->timer.function = tlan_timer; 1431 priv->timer.data = (unsigned long) dev; 1432 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1433 priv->timer_set_at = jiffies; 1434 priv->timer_type = TLAN_TIMER_ACTIVITY; 1435 add_timer(&priv->timer); 1436 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1437 priv->timer_set_at = jiffies; 1438 } 1439 } 1440 1441 return ack; 1442 1443 } 1444 1445 1446 1447 1448 /*************************************************************** 1449 * TLan_HandleStatOverflow 1450 * 1451 * Returns: 1452 * 1 1453 * Parms: 1454 * dev Device assigned the IRQ that was 1455 * raised. 1456 * host_int The contents of the HOST_INT 1457 * port. 1458 * 1459 * This function handles the Statistics Overflow interrupt 1460 * which means that one or more of the TLAN statistics 1461 * registers has reached 1/2 capacity and needs to be read. 1462 * 1463 **************************************************************/ 1464 1465 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int) 1466 { 1467 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1468 1469 return 1; 1470 1471 } 1472 1473 1474 1475 1476 /*************************************************************** 1477 * TLan_HandleRxEOF 1478 * 1479 * Returns: 1480 * 1 1481 * Parms: 1482 * dev Device assigned the IRQ that was 1483 * raised. 1484 * host_int The contents of the HOST_INT 1485 * port. 1486 * 1487 * This function handles the Rx EOF interrupt which 1488 * indicates a frame has been received by the adapter from 1489 * the net and the frame has been transferred to memory. 1490 * The function determines the bounce buffer the frame has 1491 * been loaded into, creates a new sk_buff big enough to 1492 * hold the frame, and sends it to protocol stack. It 1493 * then resets the used buffer and appends it to the end 1494 * of the list. If the frame was the last in the Rx 1495 * channel (EOC), the function restarts the receive channel 1496 * by sending an Rx Go command to the adapter. Then it 1497 * activates/continues the activity LED. 1498 * 1499 **************************************************************/ 1500 1501 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int) 1502 { 1503 struct tlan_priv *priv = netdev_priv(dev); 1504 u32 ack = 0; 1505 int eoc = 0; 1506 struct tlan_list *head_list; 1507 struct sk_buff *skb; 1508 struct tlan_list *tail_list; 1509 u16 tmp_c_stat; 1510 dma_addr_t head_list_phys; 1511 1512 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n", 1513 priv->rx_head, priv->rx_tail); 1514 head_list = priv->rx_list + priv->rx_head; 1515 head_list_phys = 1516 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head; 1517 1518 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1519 && (ack < 255)) { 1520 dma_addr_t frame_dma = head_list->buffer[0].address; 1521 u32 frame_size = head_list->frame_size; 1522 struct sk_buff *new_skb; 1523 1524 ack++; 1525 if (tmp_c_stat & TLAN_CSTAT_EOC) 1526 eoc = 1; 1527 1528 new_skb = netdev_alloc_skb_ip_align(dev, 1529 TLAN_MAX_FRAME_SIZE + 5); 1530 if (!new_skb) 1531 goto drop_and_reuse; 1532 1533 skb = tlan_get_skb(head_list); 1534 pci_unmap_single(priv->pci_dev, frame_dma, 1535 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1536 skb_put(skb, frame_size); 1537 1538 dev->stats.rx_bytes += frame_size; 1539 1540 skb->protocol = eth_type_trans(skb, dev); 1541 netif_rx(skb); 1542 1543 head_list->buffer[0].address = 1544 pci_map_single(priv->pci_dev, new_skb->data, 1545 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1546 1547 tlan_store_skb(head_list, new_skb); 1548 drop_and_reuse: 1549 head_list->forward = 0; 1550 head_list->c_stat = 0; 1551 tail_list = priv->rx_list + priv->rx_tail; 1552 tail_list->forward = head_list_phys; 1553 1554 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS); 1555 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS); 1556 head_list = priv->rx_list + priv->rx_head; 1557 head_list_phys = priv->rx_list_dma 1558 + sizeof(struct tlan_list)*priv->rx_head; 1559 } 1560 1561 if (!ack) 1562 netdev_info(dev, 1563 "Received interrupt for uncompleted RX frame\n"); 1564 1565 1566 if (eoc) { 1567 TLAN_DBG(TLAN_DEBUG_RX, 1568 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n", 1569 priv->rx_head, priv->rx_tail); 1570 head_list = priv->rx_list + priv->rx_head; 1571 head_list_phys = priv->rx_list_dma 1572 + sizeof(struct tlan_list)*priv->rx_head; 1573 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1574 ack |= TLAN_HC_GO | TLAN_HC_RT; 1575 priv->rx_eoc_count++; 1576 } 1577 1578 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1579 tlan_dio_write8(dev->base_addr, 1580 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1581 if (priv->timer.function == NULL) { 1582 priv->timer.function = tlan_timer; 1583 priv->timer.data = (unsigned long) dev; 1584 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1585 priv->timer_set_at = jiffies; 1586 priv->timer_type = TLAN_TIMER_ACTIVITY; 1587 add_timer(&priv->timer); 1588 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1589 priv->timer_set_at = jiffies; 1590 } 1591 } 1592 1593 return ack; 1594 1595 } 1596 1597 1598 1599 1600 /*************************************************************** 1601 * tlan_handle_dummy 1602 * 1603 * Returns: 1604 * 1 1605 * Parms: 1606 * dev Device assigned the IRQ that was 1607 * raised. 1608 * host_int The contents of the HOST_INT 1609 * port. 1610 * 1611 * This function handles the Dummy interrupt, which is 1612 * raised whenever a test interrupt is generated by setting 1613 * the Req_Int bit of HOST_CMD to 1. 1614 * 1615 **************************************************************/ 1616 1617 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int) 1618 { 1619 netdev_info(dev, "Test interrupt\n"); 1620 return 1; 1621 1622 } 1623 1624 1625 1626 1627 /*************************************************************** 1628 * tlan_handle_tx_eoc 1629 * 1630 * Returns: 1631 * 1 1632 * Parms: 1633 * dev Device assigned the IRQ that was 1634 * raised. 1635 * host_int The contents of the HOST_INT 1636 * port. 1637 * 1638 * This driver is structured to determine EOC occurrences by 1639 * reading the CSTAT member of the list structure. Tx EOC 1640 * interrupts are disabled via the DIO INTDIS register. 1641 * However, TLAN chips before revision 3.0 didn't have this 1642 * functionality, so process EOC events if this is the 1643 * case. 1644 * 1645 **************************************************************/ 1646 1647 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int) 1648 { 1649 struct tlan_priv *priv = netdev_priv(dev); 1650 struct tlan_list *head_list; 1651 dma_addr_t head_list_phys; 1652 u32 ack = 1; 1653 1654 if (priv->tlan_rev < 0x30) { 1655 TLAN_DBG(TLAN_DEBUG_TX, 1656 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n", 1657 priv->tx_head, priv->tx_tail); 1658 head_list = priv->tx_list + priv->tx_head; 1659 head_list_phys = priv->tx_list_dma 1660 + sizeof(struct tlan_list)*priv->tx_head; 1661 if ((head_list->c_stat & TLAN_CSTAT_READY) 1662 == TLAN_CSTAT_READY) { 1663 netif_stop_queue(dev); 1664 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1665 ack |= TLAN_HC_GO; 1666 } else { 1667 priv->tx_in_progress = 0; 1668 } 1669 } 1670 1671 return ack; 1672 1673 } 1674 1675 1676 1677 1678 /*************************************************************** 1679 * tlan_handle_status_check 1680 * 1681 * Returns: 1682 * 0 if Adapter check, 1 if Network Status check. 1683 * Parms: 1684 * dev Device assigned the IRQ that was 1685 * raised. 1686 * host_int The contents of the HOST_INT 1687 * port. 1688 * 1689 * This function handles Adapter Check/Network Status 1690 * interrupts generated by the adapter. It checks the 1691 * vector in the HOST_INT register to determine if it is 1692 * an Adapter Check interrupt. If so, it resets the 1693 * adapter. Otherwise it clears the status registers 1694 * and services the PHY. 1695 * 1696 **************************************************************/ 1697 1698 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int) 1699 { 1700 struct tlan_priv *priv = netdev_priv(dev); 1701 u32 ack; 1702 u32 error; 1703 u8 net_sts; 1704 u32 phy; 1705 u16 tlphy_ctl; 1706 u16 tlphy_sts; 1707 1708 ack = 1; 1709 if (host_int & TLAN_HI_IV_MASK) { 1710 netif_stop_queue(dev); 1711 error = inl(dev->base_addr + TLAN_CH_PARM); 1712 netdev_info(dev, "Adaptor Error = 0x%x\n", error); 1713 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1714 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD); 1715 1716 schedule_work(&priv->tlan_tqueue); 1717 1718 netif_wake_queue(dev); 1719 ack = 0; 1720 } else { 1721 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name); 1722 phy = priv->phy[priv->phy_num]; 1723 1724 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS); 1725 if (net_sts) { 1726 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts); 1727 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n", 1728 dev->name, (unsigned) net_sts); 1729 } 1730 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) { 1731 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts); 1732 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 1733 if (!(tlphy_sts & TLAN_TS_POLOK) && 1734 !(tlphy_ctl & TLAN_TC_SWAPOL)) { 1735 tlphy_ctl |= TLAN_TC_SWAPOL; 1736 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1737 tlphy_ctl); 1738 } else if ((tlphy_sts & TLAN_TS_POLOK) && 1739 (tlphy_ctl & TLAN_TC_SWAPOL)) { 1740 tlphy_ctl &= ~TLAN_TC_SWAPOL; 1741 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1742 tlphy_ctl); 1743 } 1744 1745 if (debug) 1746 tlan_phy_print(dev); 1747 } 1748 } 1749 1750 return ack; 1751 1752 } 1753 1754 1755 1756 1757 /*************************************************************** 1758 * tlan_handle_rx_eoc 1759 * 1760 * Returns: 1761 * 1 1762 * Parms: 1763 * dev Device assigned the IRQ that was 1764 * raised. 1765 * host_int The contents of the HOST_INT 1766 * port. 1767 * 1768 * This driver is structured to determine EOC occurrences by 1769 * reading the CSTAT member of the list structure. Rx EOC 1770 * interrupts are disabled via the DIO INTDIS register. 1771 * However, TLAN chips before revision 3.0 didn't have this 1772 * CSTAT member or a INTDIS register, so if this chip is 1773 * pre-3.0, process EOC interrupts normally. 1774 * 1775 **************************************************************/ 1776 1777 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int) 1778 { 1779 struct tlan_priv *priv = netdev_priv(dev); 1780 dma_addr_t head_list_phys; 1781 u32 ack = 1; 1782 1783 if (priv->tlan_rev < 0x30) { 1784 TLAN_DBG(TLAN_DEBUG_RX, 1785 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n", 1786 priv->rx_head, priv->rx_tail); 1787 head_list_phys = priv->rx_list_dma 1788 + sizeof(struct tlan_list)*priv->rx_head; 1789 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1790 ack |= TLAN_HC_GO | TLAN_HC_RT; 1791 priv->rx_eoc_count++; 1792 } 1793 1794 return ack; 1795 1796 } 1797 1798 1799 1800 1801 /***************************************************************************** 1802 ****************************************************************************** 1803 1804 ThunderLAN driver timer function 1805 1806 ****************************************************************************** 1807 *****************************************************************************/ 1808 1809 1810 /*************************************************************** 1811 * tlan_timer 1812 * 1813 * Returns: 1814 * Nothing 1815 * Parms: 1816 * data A value given to add timer when 1817 * add_timer was called. 1818 * 1819 * This function handles timed functionality for the 1820 * TLAN driver. The two current timer uses are for 1821 * delaying for autonegotionation and driving the ACT LED. 1822 * - Autonegotiation requires being allowed about 1823 * 2 1/2 seconds before attempting to transmit a 1824 * packet. It would be a very bad thing to hang 1825 * the kernel this long, so the driver doesn't 1826 * allow transmission 'til after this time, for 1827 * certain PHYs. It would be much nicer if all 1828 * PHYs were interrupt-capable like the internal 1829 * PHY. 1830 * - The ACT LED, which shows adapter activity, is 1831 * driven by the driver, and so must be left on 1832 * for a short period to power up the LED so it 1833 * can be seen. This delay can be changed by 1834 * changing the TLAN_TIMER_ACT_DELAY in tlan.h, 1835 * if desired. 100 ms produces a slightly 1836 * sluggish response. 1837 * 1838 **************************************************************/ 1839 1840 static void tlan_timer(unsigned long data) 1841 { 1842 struct net_device *dev = (struct net_device *) data; 1843 struct tlan_priv *priv = netdev_priv(dev); 1844 u32 elapsed; 1845 unsigned long flags = 0; 1846 1847 priv->timer.function = NULL; 1848 1849 switch (priv->timer_type) { 1850 case TLAN_TIMER_PHY_PDOWN: 1851 tlan_phy_power_down(dev); 1852 break; 1853 case TLAN_TIMER_PHY_PUP: 1854 tlan_phy_power_up(dev); 1855 break; 1856 case TLAN_TIMER_PHY_RESET: 1857 tlan_phy_reset(dev); 1858 break; 1859 case TLAN_TIMER_PHY_START_LINK: 1860 tlan_phy_start_link(dev); 1861 break; 1862 case TLAN_TIMER_PHY_FINISH_AN: 1863 tlan_phy_finish_auto_neg(dev); 1864 break; 1865 case TLAN_TIMER_FINISH_RESET: 1866 tlan_finish_reset(dev); 1867 break; 1868 case TLAN_TIMER_ACTIVITY: 1869 spin_lock_irqsave(&priv->lock, flags); 1870 if (priv->timer.function == NULL) { 1871 elapsed = jiffies - priv->timer_set_at; 1872 if (elapsed >= TLAN_TIMER_ACT_DELAY) { 1873 tlan_dio_write8(dev->base_addr, 1874 TLAN_LED_REG, TLAN_LED_LINK); 1875 } else { 1876 priv->timer.function = tlan_timer; 1877 priv->timer.expires = priv->timer_set_at 1878 + TLAN_TIMER_ACT_DELAY; 1879 spin_unlock_irqrestore(&priv->lock, flags); 1880 add_timer(&priv->timer); 1881 break; 1882 } 1883 } 1884 spin_unlock_irqrestore(&priv->lock, flags); 1885 break; 1886 default: 1887 break; 1888 } 1889 1890 } 1891 1892 1893 /***************************************************************************** 1894 ****************************************************************************** 1895 1896 ThunderLAN driver adapter related routines 1897 1898 ****************************************************************************** 1899 *****************************************************************************/ 1900 1901 1902 /*************************************************************** 1903 * tlan_reset_lists 1904 * 1905 * Returns: 1906 * Nothing 1907 * Parms: 1908 * dev The device structure with the list 1909 * stuctures to be reset. 1910 * 1911 * This routine sets the variables associated with managing 1912 * the TLAN lists to their initial values. 1913 * 1914 **************************************************************/ 1915 1916 static void tlan_reset_lists(struct net_device *dev) 1917 { 1918 struct tlan_priv *priv = netdev_priv(dev); 1919 int i; 1920 struct tlan_list *list; 1921 dma_addr_t list_phys; 1922 struct sk_buff *skb; 1923 1924 priv->tx_head = 0; 1925 priv->tx_tail = 0; 1926 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1927 list = priv->tx_list + i; 1928 list->c_stat = TLAN_CSTAT_UNUSED; 1929 list->buffer[0].address = 0; 1930 list->buffer[2].count = 0; 1931 list->buffer[2].address = 0; 1932 list->buffer[8].address = 0; 1933 list->buffer[9].address = 0; 1934 } 1935 1936 priv->rx_head = 0; 1937 priv->rx_tail = TLAN_NUM_RX_LISTS - 1; 1938 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1939 list = priv->rx_list + i; 1940 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i; 1941 list->c_stat = TLAN_CSTAT_READY; 1942 list->frame_size = TLAN_MAX_FRAME_SIZE; 1943 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; 1944 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5); 1945 if (!skb) 1946 break; 1947 1948 list->buffer[0].address = pci_map_single(priv->pci_dev, 1949 skb->data, 1950 TLAN_MAX_FRAME_SIZE, 1951 PCI_DMA_FROMDEVICE); 1952 tlan_store_skb(list, skb); 1953 list->buffer[1].count = 0; 1954 list->buffer[1].address = 0; 1955 list->forward = list_phys + sizeof(struct tlan_list); 1956 } 1957 1958 /* in case ran out of memory early, clear bits */ 1959 while (i < TLAN_NUM_RX_LISTS) { 1960 tlan_store_skb(priv->rx_list + i, NULL); 1961 ++i; 1962 } 1963 list->forward = 0; 1964 1965 } 1966 1967 1968 static void tlan_free_lists(struct net_device *dev) 1969 { 1970 struct tlan_priv *priv = netdev_priv(dev); 1971 int i; 1972 struct tlan_list *list; 1973 struct sk_buff *skb; 1974 1975 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1976 list = priv->tx_list + i; 1977 skb = tlan_get_skb(list); 1978 if (skb) { 1979 pci_unmap_single( 1980 priv->pci_dev, 1981 list->buffer[0].address, 1982 max(skb->len, 1983 (unsigned int)TLAN_MIN_FRAME_SIZE), 1984 PCI_DMA_TODEVICE); 1985 dev_kfree_skb_any(skb); 1986 list->buffer[8].address = 0; 1987 list->buffer[9].address = 0; 1988 } 1989 } 1990 1991 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1992 list = priv->rx_list + i; 1993 skb = tlan_get_skb(list); 1994 if (skb) { 1995 pci_unmap_single(priv->pci_dev, 1996 list->buffer[0].address, 1997 TLAN_MAX_FRAME_SIZE, 1998 PCI_DMA_FROMDEVICE); 1999 dev_kfree_skb_any(skb); 2000 list->buffer[8].address = 0; 2001 list->buffer[9].address = 0; 2002 } 2003 } 2004 } 2005 2006 2007 2008 2009 /*************************************************************** 2010 * tlan_print_dio 2011 * 2012 * Returns: 2013 * Nothing 2014 * Parms: 2015 * io_base Base IO port of the device of 2016 * which to print DIO registers. 2017 * 2018 * This function prints out all the internal (DIO) 2019 * registers of a TLAN chip. 2020 * 2021 **************************************************************/ 2022 2023 static void tlan_print_dio(u16 io_base) 2024 { 2025 u32 data0, data1; 2026 int i; 2027 2028 pr_info("Contents of internal registers for io base 0x%04hx\n", 2029 io_base); 2030 pr_info("Off. +0 +4\n"); 2031 for (i = 0; i < 0x4C; i += 8) { 2032 data0 = tlan_dio_read32(io_base, i); 2033 data1 = tlan_dio_read32(io_base, i + 0x4); 2034 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1); 2035 } 2036 2037 } 2038 2039 2040 2041 2042 /*************************************************************** 2043 * TLan_PrintList 2044 * 2045 * Returns: 2046 * Nothing 2047 * Parms: 2048 * list A pointer to the struct tlan_list structure to 2049 * be printed. 2050 * type A string to designate type of list, 2051 * "Rx" or "Tx". 2052 * num The index of the list. 2053 * 2054 * This function prints out the contents of the list 2055 * pointed to by the list parameter. 2056 * 2057 **************************************************************/ 2058 2059 static void tlan_print_list(struct tlan_list *list, char *type, int num) 2060 { 2061 int i; 2062 2063 pr_info("%s List %d at %p\n", type, num, list); 2064 pr_info(" Forward = 0x%08x\n", list->forward); 2065 pr_info(" CSTAT = 0x%04hx\n", list->c_stat); 2066 pr_info(" Frame Size = 0x%04hx\n", list->frame_size); 2067 /* for (i = 0; i < 10; i++) { */ 2068 for (i = 0; i < 2; i++) { 2069 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n", 2070 i, list->buffer[i].count, list->buffer[i].address); 2071 } 2072 2073 } 2074 2075 2076 2077 2078 /*************************************************************** 2079 * tlan_read_and_clear_stats 2080 * 2081 * Returns: 2082 * Nothing 2083 * Parms: 2084 * dev Pointer to device structure of adapter 2085 * to which to read stats. 2086 * record Flag indicating whether to add 2087 * 2088 * This functions reads all the internal status registers 2089 * of the TLAN chip, which clears them as a side effect. 2090 * It then either adds the values to the device's status 2091 * struct, or discards them, depending on whether record 2092 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0). 2093 * 2094 **************************************************************/ 2095 2096 static void tlan_read_and_clear_stats(struct net_device *dev, int record) 2097 { 2098 u32 tx_good, tx_under; 2099 u32 rx_good, rx_over; 2100 u32 def_tx, crc, code; 2101 u32 multi_col, single_col; 2102 u32 excess_col, late_col, loss; 2103 2104 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2105 tx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2106 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2107 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2108 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2109 2110 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2111 rx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2112 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2113 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2114 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2115 2116 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR); 2117 def_tx = inb(dev->base_addr + TLAN_DIO_DATA); 2118 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2119 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2120 code = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2121 2122 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2123 multi_col = inb(dev->base_addr + TLAN_DIO_DATA); 2124 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2125 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2126 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8; 2127 2128 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2129 excess_col = inb(dev->base_addr + TLAN_DIO_DATA); 2130 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1); 2131 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2132 2133 if (record) { 2134 dev->stats.rx_packets += rx_good; 2135 dev->stats.rx_errors += rx_over + crc + code; 2136 dev->stats.tx_packets += tx_good; 2137 dev->stats.tx_errors += tx_under + loss; 2138 dev->stats.collisions += multi_col 2139 + single_col + excess_col + late_col; 2140 2141 dev->stats.rx_over_errors += rx_over; 2142 dev->stats.rx_crc_errors += crc; 2143 dev->stats.rx_frame_errors += code; 2144 2145 dev->stats.tx_aborted_errors += tx_under; 2146 dev->stats.tx_carrier_errors += loss; 2147 } 2148 2149 } 2150 2151 2152 2153 2154 /*************************************************************** 2155 * TLan_Reset 2156 * 2157 * Returns: 2158 * 0 2159 * Parms: 2160 * dev Pointer to device structure of adapter 2161 * to be reset. 2162 * 2163 * This function resets the adapter and it's physical 2164 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN 2165 * Programmer's Guide" for details. The routine tries to 2166 * implement what is detailed there, though adjustments 2167 * have been made. 2168 * 2169 **************************************************************/ 2170 2171 static void 2172 tlan_reset_adapter(struct net_device *dev) 2173 { 2174 struct tlan_priv *priv = netdev_priv(dev); 2175 int i; 2176 u32 addr; 2177 u32 data; 2178 u8 data8; 2179 2180 priv->tlan_full_duplex = false; 2181 priv->phy_online = 0; 2182 netif_carrier_off(dev); 2183 2184 /* 1. Assert reset bit. */ 2185 2186 data = inl(dev->base_addr + TLAN_HOST_CMD); 2187 data |= TLAN_HC_AD_RST; 2188 outl(data, dev->base_addr + TLAN_HOST_CMD); 2189 2190 udelay(1000); 2191 2192 /* 2. Turn off interrupts. (Probably isn't necessary) */ 2193 2194 data = inl(dev->base_addr + TLAN_HOST_CMD); 2195 data |= TLAN_HC_INT_OFF; 2196 outl(data, dev->base_addr + TLAN_HOST_CMD); 2197 2198 /* 3. Clear AREGs and HASHs. */ 2199 2200 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4) 2201 tlan_dio_write32(dev->base_addr, (u16) i, 0); 2202 2203 /* 4. Setup NetConfig register. */ 2204 2205 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; 2206 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data); 2207 2208 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */ 2209 2210 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD); 2211 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD); 2212 2213 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */ 2214 2215 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2216 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2217 tlan_set_bit(TLAN_NET_SIO_NMRST, addr); 2218 2219 /* 7. Setup the remaining registers. */ 2220 2221 if (priv->tlan_rev >= 0x30) { 2222 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC; 2223 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8); 2224 } 2225 tlan_phy_detect(dev); 2226 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN; 2227 2228 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) { 2229 data |= TLAN_NET_CFG_BIT; 2230 if (priv->aui == 1) { 2231 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a); 2232 } else if (priv->duplex == TLAN_DUPLEX_FULL) { 2233 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00); 2234 priv->tlan_full_duplex = true; 2235 } else { 2236 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08); 2237 } 2238 } 2239 2240 /* don't power down internal PHY if we're going to use it */ 2241 if (priv->phy_num == 0 || 2242 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)) 2243 data |= TLAN_NET_CFG_PHY_EN; 2244 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data); 2245 2246 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) 2247 tlan_finish_reset(dev); 2248 else 2249 tlan_phy_power_down(dev); 2250 2251 } 2252 2253 2254 2255 2256 static void 2257 tlan_finish_reset(struct net_device *dev) 2258 { 2259 struct tlan_priv *priv = netdev_priv(dev); 2260 u8 data; 2261 u32 phy; 2262 u8 sio; 2263 u16 status; 2264 u16 partner; 2265 u16 tlphy_ctl; 2266 u16 tlphy_par; 2267 u16 tlphy_id1, tlphy_id2; 2268 int i; 2269 2270 phy = priv->phy[priv->phy_num]; 2271 2272 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP; 2273 if (priv->tlan_full_duplex) 2274 data |= TLAN_NET_CMD_DUPLEX; 2275 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data); 2276 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5; 2277 if (priv->phy_num == 0) 2278 data |= TLAN_NET_MASK_MASK7; 2279 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data); 2280 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7); 2281 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1); 2282 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2); 2283 2284 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) || 2285 (priv->aui)) { 2286 status = MII_GS_LINK; 2287 netdev_info(dev, "Link forced\n"); 2288 } else { 2289 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2290 udelay(1000); 2291 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2292 if (status & MII_GS_LINK) { 2293 /* We only support link info on Nat.Sem. PHY's */ 2294 if ((tlphy_id1 == NAT_SEM_ID1) && 2295 (tlphy_id2 == NAT_SEM_ID2)) { 2296 tlan_mii_read_reg(dev, phy, MII_AN_LPA, 2297 &partner); 2298 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, 2299 &tlphy_par); 2300 2301 netdev_info(dev, 2302 "Link active, %s %uMbps %s-Duplex\n", 2303 !(tlphy_par & TLAN_PHY_AN_EN_STAT) 2304 ? "forced" : "Autonegotiation enabled,", 2305 tlphy_par & TLAN_PHY_SPEED_100 2306 ? 100 : 10, 2307 tlphy_par & TLAN_PHY_DUPLEX_FULL 2308 ? "Full" : "Half"); 2309 2310 if (tlphy_par & TLAN_PHY_AN_EN_STAT) { 2311 netdev_info(dev, "Partner capability:"); 2312 for (i = 5; i < 10; i++) 2313 if (partner & (1 << i)) 2314 pr_cont(" %s", 2315 media[i-5]); 2316 pr_cont("\n"); 2317 } 2318 } else 2319 netdev_info(dev, "Link active\n"); 2320 /* Enabling link beat monitoring */ 2321 priv->media_timer.function = tlan_phy_monitor; 2322 priv->media_timer.data = (unsigned long) dev; 2323 priv->media_timer.expires = jiffies + HZ; 2324 add_timer(&priv->media_timer); 2325 } 2326 } 2327 2328 if (priv->phy_num == 0) { 2329 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 2330 tlphy_ctl |= TLAN_TC_INTEN; 2331 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl); 2332 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO); 2333 sio |= TLAN_NET_SIO_MINTEN; 2334 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio); 2335 } 2336 2337 if (status & MII_GS_LINK) { 2338 tlan_set_mac(dev, 0, dev->dev_addr); 2339 priv->phy_online = 1; 2340 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1); 2341 if (debug >= 1 && debug != TLAN_DEBUG_PROBE) 2342 outb((TLAN_HC_REQ_INT >> 8), 2343 dev->base_addr + TLAN_HOST_CMD + 1); 2344 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM); 2345 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD); 2346 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); 2347 netif_carrier_on(dev); 2348 } else { 2349 netdev_info(dev, "Link inactive, will retry in 10 secs...\n"); 2350 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET); 2351 return; 2352 } 2353 tlan_set_multicast_list(dev); 2354 2355 } 2356 2357 2358 2359 2360 /*************************************************************** 2361 * tlan_set_mac 2362 * 2363 * Returns: 2364 * Nothing 2365 * Parms: 2366 * dev Pointer to device structure of adapter 2367 * on which to change the AREG. 2368 * areg The AREG to set the address in (0 - 3). 2369 * mac A pointer to an array of chars. Each 2370 * element stores one byte of the address. 2371 * IE, it isn't in ascii. 2372 * 2373 * This function transfers a MAC address to one of the 2374 * TLAN AREGs (address registers). The TLAN chip locks 2375 * the register on writing to offset 0 and unlocks the 2376 * register after writing to offset 5. If NULL is passed 2377 * in mac, then the AREG is filled with 0's. 2378 * 2379 **************************************************************/ 2380 2381 static void tlan_set_mac(struct net_device *dev, int areg, char *mac) 2382 { 2383 int i; 2384 2385 areg *= 6; 2386 2387 if (mac != NULL) { 2388 for (i = 0; i < 6; i++) 2389 tlan_dio_write8(dev->base_addr, 2390 TLAN_AREG_0 + areg + i, mac[i]); 2391 } else { 2392 for (i = 0; i < 6; i++) 2393 tlan_dio_write8(dev->base_addr, 2394 TLAN_AREG_0 + areg + i, 0); 2395 } 2396 2397 } 2398 2399 2400 2401 2402 /***************************************************************************** 2403 ****************************************************************************** 2404 2405 ThunderLAN driver PHY layer routines 2406 2407 ****************************************************************************** 2408 *****************************************************************************/ 2409 2410 2411 2412 /********************************************************************* 2413 * tlan_phy_print 2414 * 2415 * Returns: 2416 * Nothing 2417 * Parms: 2418 * dev A pointer to the device structure of the 2419 * TLAN device having the PHYs to be detailed. 2420 * 2421 * This function prints the registers a PHY (aka transceiver). 2422 * 2423 ********************************************************************/ 2424 2425 static void tlan_phy_print(struct net_device *dev) 2426 { 2427 struct tlan_priv *priv = netdev_priv(dev); 2428 u16 i, data0, data1, data2, data3, phy; 2429 2430 phy = priv->phy[priv->phy_num]; 2431 2432 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2433 netdev_info(dev, "Unmanaged PHY\n"); 2434 } else if (phy <= TLAN_PHY_MAX_ADDR) { 2435 netdev_info(dev, "PHY 0x%02x\n", phy); 2436 pr_info(" Off. +0 +1 +2 +3\n"); 2437 for (i = 0; i < 0x20; i += 4) { 2438 tlan_mii_read_reg(dev, phy, i, &data0); 2439 tlan_mii_read_reg(dev, phy, i + 1, &data1); 2440 tlan_mii_read_reg(dev, phy, i + 2, &data2); 2441 tlan_mii_read_reg(dev, phy, i + 3, &data3); 2442 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n", 2443 i, data0, data1, data2, data3); 2444 } 2445 } else { 2446 netdev_info(dev, "Invalid PHY\n"); 2447 } 2448 2449 } 2450 2451 2452 2453 2454 /********************************************************************* 2455 * tlan_phy_detect 2456 * 2457 * Returns: 2458 * Nothing 2459 * Parms: 2460 * dev A pointer to the device structure of the adapter 2461 * for which the PHY needs determined. 2462 * 2463 * So far I've found that adapters which have external PHYs 2464 * may also use the internal PHY for part of the functionality. 2465 * (eg, AUI/Thinnet). This function finds out if this TLAN 2466 * chip has an internal PHY, and then finds the first external 2467 * PHY (starting from address 0) if it exists). 2468 * 2469 ********************************************************************/ 2470 2471 static void tlan_phy_detect(struct net_device *dev) 2472 { 2473 struct tlan_priv *priv = netdev_priv(dev); 2474 u16 control; 2475 u16 hi; 2476 u16 lo; 2477 u32 phy; 2478 2479 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2480 priv->phy_num = 0xffff; 2481 return; 2482 } 2483 2484 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi); 2485 2486 if (hi != 0xffff) 2487 priv->phy[0] = TLAN_PHY_MAX_ADDR; 2488 else 2489 priv->phy[0] = TLAN_PHY_NONE; 2490 2491 priv->phy[1] = TLAN_PHY_NONE; 2492 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) { 2493 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control); 2494 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi); 2495 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo); 2496 if ((control != 0xffff) || 2497 (hi != 0xffff) || (lo != 0xffff)) { 2498 TLAN_DBG(TLAN_DEBUG_GNRL, 2499 "PHY found at %02x %04x %04x %04x\n", 2500 phy, control, hi, lo); 2501 if ((priv->phy[1] == TLAN_PHY_NONE) && 2502 (phy != TLAN_PHY_MAX_ADDR)) { 2503 priv->phy[1] = phy; 2504 } 2505 } 2506 } 2507 2508 if (priv->phy[1] != TLAN_PHY_NONE) 2509 priv->phy_num = 1; 2510 else if (priv->phy[0] != TLAN_PHY_NONE) 2511 priv->phy_num = 0; 2512 else 2513 netdev_info(dev, "Cannot initialize device, no PHY was found!\n"); 2514 2515 } 2516 2517 2518 2519 2520 static void tlan_phy_power_down(struct net_device *dev) 2521 { 2522 struct tlan_priv *priv = netdev_priv(dev); 2523 u16 value; 2524 2525 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name); 2526 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE; 2527 tlan_mii_sync(dev->base_addr); 2528 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2529 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) { 2530 /* if using internal PHY, the external PHY must be powered on */ 2531 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) 2532 value = MII_GC_ISOLATE; /* just isolate it from MII */ 2533 tlan_mii_sync(dev->base_addr); 2534 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value); 2535 } 2536 2537 /* Wait for 50 ms and powerup 2538 * This is abitrary. It is intended to make sure the 2539 * transceiver settles. 2540 */ 2541 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP); 2542 2543 } 2544 2545 2546 2547 2548 static void tlan_phy_power_up(struct net_device *dev) 2549 { 2550 struct tlan_priv *priv = netdev_priv(dev); 2551 u16 value; 2552 2553 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name); 2554 tlan_mii_sync(dev->base_addr); 2555 value = MII_GC_LOOPBK; 2556 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2557 tlan_mii_sync(dev->base_addr); 2558 /* Wait for 500 ms and reset the 2559 * transceiver. The TLAN docs say both 50 ms and 2560 * 500 ms, so do the longer, just in case. 2561 */ 2562 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET); 2563 2564 } 2565 2566 2567 2568 2569 static void tlan_phy_reset(struct net_device *dev) 2570 { 2571 struct tlan_priv *priv = netdev_priv(dev); 2572 u16 phy; 2573 u16 value; 2574 unsigned long timeout = jiffies + HZ; 2575 2576 phy = priv->phy[priv->phy_num]; 2577 2578 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name); 2579 tlan_mii_sync(dev->base_addr); 2580 value = MII_GC_LOOPBK | MII_GC_RESET; 2581 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value); 2582 do { 2583 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value); 2584 if (time_after(jiffies, timeout)) { 2585 netdev_err(dev, "PHY reset timeout\n"); 2586 return; 2587 } 2588 } while (value & MII_GC_RESET); 2589 2590 /* Wait for 500 ms and initialize. 2591 * I don't remember why I wait this long. 2592 * I've changed this to 50ms, as it seems long enough. 2593 */ 2594 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK); 2595 2596 } 2597 2598 2599 2600 2601 static void tlan_phy_start_link(struct net_device *dev) 2602 { 2603 struct tlan_priv *priv = netdev_priv(dev); 2604 u16 ability; 2605 u16 control; 2606 u16 data; 2607 u16 phy; 2608 u16 status; 2609 u16 tctl; 2610 2611 phy = priv->phy[priv->phy_num]; 2612 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name); 2613 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2614 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability); 2615 2616 if ((status & MII_GS_AUTONEG) && 2617 (!priv->aui)) { 2618 ability = status >> 11; 2619 if (priv->speed == TLAN_SPEED_10 && 2620 priv->duplex == TLAN_DUPLEX_HALF) { 2621 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000); 2622 } else if (priv->speed == TLAN_SPEED_10 && 2623 priv->duplex == TLAN_DUPLEX_FULL) { 2624 priv->tlan_full_duplex = true; 2625 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100); 2626 } else if (priv->speed == TLAN_SPEED_100 && 2627 priv->duplex == TLAN_DUPLEX_HALF) { 2628 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000); 2629 } else if (priv->speed == TLAN_SPEED_100 && 2630 priv->duplex == TLAN_DUPLEX_FULL) { 2631 priv->tlan_full_duplex = true; 2632 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100); 2633 } else { 2634 2635 /* Set Auto-Neg advertisement */ 2636 tlan_mii_write_reg(dev, phy, MII_AN_ADV, 2637 (ability << 5) | 1); 2638 /* Enablee Auto-Neg */ 2639 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000); 2640 /* Restart Auto-Neg */ 2641 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200); 2642 /* Wait for 4 sec for autonegotiation 2643 * to complete. The max spec time is less than this 2644 * but the card need additional time to start AN. 2645 * .5 sec should be plenty extra. 2646 */ 2647 netdev_info(dev, "Starting autonegotiation\n"); 2648 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN); 2649 return; 2650 } 2651 2652 } 2653 2654 if ((priv->aui) && (priv->phy_num != 0)) { 2655 priv->phy_num = 0; 2656 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN 2657 | TLAN_NET_CFG_PHY_EN; 2658 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data); 2659 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN); 2660 return; 2661 } else if (priv->phy_num == 0) { 2662 control = 0; 2663 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl); 2664 if (priv->aui) { 2665 tctl |= TLAN_TC_AUISEL; 2666 } else { 2667 tctl &= ~TLAN_TC_AUISEL; 2668 if (priv->duplex == TLAN_DUPLEX_FULL) { 2669 control |= MII_GC_DUPLEX; 2670 priv->tlan_full_duplex = true; 2671 } 2672 if (priv->speed == TLAN_SPEED_100) 2673 control |= MII_GC_SPEEDSEL; 2674 } 2675 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control); 2676 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl); 2677 } 2678 2679 /* Wait for 2 sec to give the transceiver time 2680 * to establish link. 2681 */ 2682 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET); 2683 2684 } 2685 2686 2687 2688 2689 static void tlan_phy_finish_auto_neg(struct net_device *dev) 2690 { 2691 struct tlan_priv *priv = netdev_priv(dev); 2692 u16 an_adv; 2693 u16 an_lpa; 2694 u16 mode; 2695 u16 phy; 2696 u16 status; 2697 2698 phy = priv->phy[priv->phy_num]; 2699 2700 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2701 udelay(1000); 2702 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2703 2704 if (!(status & MII_GS_AUTOCMPLT)) { 2705 /* Wait for 8 sec to give the process 2706 * more time. Perhaps we should fail after a while. 2707 */ 2708 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN); 2709 return; 2710 } 2711 2712 netdev_info(dev, "Autonegotiation complete\n"); 2713 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv); 2714 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa); 2715 mode = an_adv & an_lpa & 0x03E0; 2716 if (mode & 0x0100) 2717 priv->tlan_full_duplex = true; 2718 else if (!(mode & 0x0080) && (mode & 0x0040)) 2719 priv->tlan_full_duplex = true; 2720 2721 /* switch to internal PHY for 10 Mbps */ 2722 if ((!(mode & 0x0180)) && 2723 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) && 2724 (priv->phy_num != 0)) { 2725 priv->phy_num = 0; 2726 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN); 2727 return; 2728 } 2729 2730 if (priv->phy_num == 0) { 2731 if ((priv->duplex == TLAN_DUPLEX_FULL) || 2732 (an_adv & an_lpa & 0x0040)) { 2733 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2734 MII_GC_AUTOENB | MII_GC_DUPLEX); 2735 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n"); 2736 } else { 2737 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2738 MII_GC_AUTOENB); 2739 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n"); 2740 } 2741 } 2742 2743 /* Wait for 100 ms. No reason in partiticular. 2744 */ 2745 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET); 2746 2747 } 2748 2749 2750 /********************************************************************* 2751 * 2752 * tlan_phy_monitor 2753 * 2754 * Returns: 2755 * None 2756 * 2757 * Params: 2758 * data The device structure of this device. 2759 * 2760 * 2761 * This function monitors PHY condition by reading the status 2762 * register via the MII bus, controls LINK LED and notifies the 2763 * kernel about link state. 2764 * 2765 *******************************************************************/ 2766 2767 static void tlan_phy_monitor(unsigned long data) 2768 { 2769 struct net_device *dev = (struct net_device *) data; 2770 struct tlan_priv *priv = netdev_priv(dev); 2771 u16 phy; 2772 u16 phy_status; 2773 2774 phy = priv->phy[priv->phy_num]; 2775 2776 /* Get PHY status register */ 2777 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status); 2778 2779 /* Check if link has been lost */ 2780 if (!(phy_status & MII_GS_LINK)) { 2781 if (netif_carrier_ok(dev)) { 2782 printk(KERN_DEBUG "TLAN: %s has lost link\n", 2783 dev->name); 2784 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0); 2785 netif_carrier_off(dev); 2786 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) { 2787 /* power down internal PHY */ 2788 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK | 2789 MII_GC_ISOLATE; 2790 2791 tlan_mii_sync(dev->base_addr); 2792 tlan_mii_write_reg(dev, priv->phy[0], 2793 MII_GEN_CTL, data); 2794 /* set to external PHY */ 2795 priv->phy_num = 1; 2796 /* restart autonegotiation */ 2797 tlan_set_timer(dev, msecs_to_jiffies(400), 2798 TLAN_TIMER_PHY_PDOWN); 2799 return; 2800 } 2801 } 2802 } 2803 2804 /* Link restablished? */ 2805 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) { 2806 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); 2807 printk(KERN_DEBUG "TLAN: %s has reestablished link\n", 2808 dev->name); 2809 netif_carrier_on(dev); 2810 } 2811 priv->media_timer.expires = jiffies + HZ; 2812 add_timer(&priv->media_timer); 2813 } 2814 2815 2816 /***************************************************************************** 2817 ****************************************************************************** 2818 2819 ThunderLAN driver MII routines 2820 2821 these routines are based on the information in chap. 2 of the 2822 "ThunderLAN Programmer's Guide", pp. 15-24. 2823 2824 ****************************************************************************** 2825 *****************************************************************************/ 2826 2827 2828 /*************************************************************** 2829 * tlan_mii_read_reg 2830 * 2831 * Returns: 2832 * false if ack received ok 2833 * true if no ack received or other error 2834 * 2835 * Parms: 2836 * dev The device structure containing 2837 * The io address and interrupt count 2838 * for this device. 2839 * phy The address of the PHY to be queried. 2840 * reg The register whose contents are to be 2841 * retrieved. 2842 * val A pointer to a variable to store the 2843 * retrieved value. 2844 * 2845 * This function uses the TLAN's MII bus to retrieve the contents 2846 * of a given register on a PHY. It sends the appropriate info 2847 * and then reads the 16-bit register value from the MII bus via 2848 * the TLAN SIO register. 2849 * 2850 **************************************************************/ 2851 2852 static bool 2853 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val) 2854 { 2855 u8 nack; 2856 u16 sio, tmp; 2857 u32 i; 2858 bool err; 2859 int minten; 2860 struct tlan_priv *priv = netdev_priv(dev); 2861 unsigned long flags = 0; 2862 2863 err = false; 2864 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2865 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2866 2867 if (!in_irq()) 2868 spin_lock_irqsave(&priv->lock, flags); 2869 2870 tlan_mii_sync(dev->base_addr); 2871 2872 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 2873 if (minten) 2874 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 2875 2876 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 2877 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */ 2878 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 2879 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 2880 2881 2882 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */ 2883 2884 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */ 2885 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2886 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */ 2887 2888 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */ 2889 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */ 2890 if (nack) { /* no ACK, so fake it */ 2891 for (i = 0; i < 16; i++) { 2892 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2893 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2894 } 2895 tmp = 0xffff; 2896 err = true; 2897 } else { /* ACK, so read data */ 2898 for (tmp = 0, i = 0x8000; i; i >>= 1) { 2899 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2900 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio)) 2901 tmp |= i; 2902 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2903 } 2904 } 2905 2906 2907 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 2908 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2909 2910 if (minten) 2911 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 2912 2913 *val = tmp; 2914 2915 if (!in_irq()) 2916 spin_unlock_irqrestore(&priv->lock, flags); 2917 2918 return err; 2919 2920 } 2921 2922 2923 2924 2925 /*************************************************************** 2926 * tlan_mii_send_data 2927 * 2928 * Returns: 2929 * Nothing 2930 * Parms: 2931 * base_port The base IO port of the adapter in 2932 * question. 2933 * dev The address of the PHY to be queried. 2934 * data The value to be placed on the MII bus. 2935 * num_bits The number of bits in data that are to 2936 * be placed on the MII bus. 2937 * 2938 * This function sends on sequence of bits on the MII 2939 * configuration bus. 2940 * 2941 **************************************************************/ 2942 2943 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits) 2944 { 2945 u16 sio; 2946 u32 i; 2947 2948 if (num_bits == 0) 2949 return; 2950 2951 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2952 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2953 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio); 2954 2955 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) { 2956 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2957 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2958 if (data & i) 2959 tlan_set_bit(TLAN_NET_SIO_MDATA, sio); 2960 else 2961 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio); 2962 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2963 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2964 } 2965 2966 } 2967 2968 2969 2970 2971 /*************************************************************** 2972 * TLan_MiiSync 2973 * 2974 * Returns: 2975 * Nothing 2976 * Parms: 2977 * base_port The base IO port of the adapter in 2978 * question. 2979 * 2980 * This functions syncs all PHYs in terms of the MII configuration 2981 * bus. 2982 * 2983 **************************************************************/ 2984 2985 static void tlan_mii_sync(u16 base_port) 2986 { 2987 int i; 2988 u16 sio; 2989 2990 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2991 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2992 2993 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); 2994 for (i = 0; i < 32; i++) { 2995 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2996 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2997 } 2998 2999 } 3000 3001 3002 3003 3004 /*************************************************************** 3005 * tlan_mii_write_reg 3006 * 3007 * Returns: 3008 * Nothing 3009 * Parms: 3010 * dev The device structure for the device 3011 * to write to. 3012 * phy The address of the PHY to be written to. 3013 * reg The register whose contents are to be 3014 * written. 3015 * val The value to be written to the register. 3016 * 3017 * This function uses the TLAN's MII bus to write the contents of a 3018 * given register on a PHY. It sends the appropriate info and then 3019 * writes the 16-bit register value from the MII configuration bus 3020 * via the TLAN SIO register. 3021 * 3022 **************************************************************/ 3023 3024 static void 3025 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val) 3026 { 3027 u16 sio; 3028 int minten; 3029 unsigned long flags = 0; 3030 struct tlan_priv *priv = netdev_priv(dev); 3031 3032 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 3033 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 3034 3035 if (!in_irq()) 3036 spin_lock_irqsave(&priv->lock, flags); 3037 3038 tlan_mii_sync(dev->base_addr); 3039 3040 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 3041 if (minten) 3042 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 3043 3044 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 3045 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */ 3046 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 3047 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 3048 3049 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */ 3050 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */ 3051 3052 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 3053 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 3054 3055 if (minten) 3056 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 3057 3058 if (!in_irq()) 3059 spin_unlock_irqrestore(&priv->lock, flags); 3060 3061 } 3062 3063 3064 3065 3066 /***************************************************************************** 3067 ****************************************************************************** 3068 3069 ThunderLAN driver eeprom routines 3070 3071 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A 3072 EEPROM. these functions are based on information in microchip's 3073 data sheet. I don't know how well this functions will work with 3074 other Eeproms. 3075 3076 ****************************************************************************** 3077 *****************************************************************************/ 3078 3079 3080 /*************************************************************** 3081 * tlan_ee_send_start 3082 * 3083 * Returns: 3084 * Nothing 3085 * Parms: 3086 * io_base The IO port base address for the 3087 * TLAN device with the EEPROM to 3088 * use. 3089 * 3090 * This function sends a start cycle to an EEPROM attached 3091 * to a TLAN chip. 3092 * 3093 **************************************************************/ 3094 3095 static void tlan_ee_send_start(u16 io_base) 3096 { 3097 u16 sio; 3098 3099 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3100 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3101 3102 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3103 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3104 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3105 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3106 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3107 3108 } 3109 3110 3111 3112 3113 /*************************************************************** 3114 * tlan_ee_send_byte 3115 * 3116 * Returns: 3117 * If the correct ack was received, 0, otherwise 1 3118 * Parms: io_base The IO port base address for the 3119 * TLAN device with the EEPROM to 3120 * use. 3121 * data The 8 bits of information to 3122 * send to the EEPROM. 3123 * stop If TLAN_EEPROM_STOP is passed, a 3124 * stop cycle is sent after the 3125 * byte is sent after the ack is 3126 * read. 3127 * 3128 * This function sends a byte on the serial EEPROM line, 3129 * driving the clock to send each bit. The function then 3130 * reverses transmission direction and reads an acknowledge 3131 * bit. 3132 * 3133 **************************************************************/ 3134 3135 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop) 3136 { 3137 int err; 3138 u8 place; 3139 u16 sio; 3140 3141 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3142 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3143 3144 /* Assume clock is low, tx is enabled; */ 3145 for (place = 0x80; place != 0; place >>= 1) { 3146 if (place & data) 3147 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3148 else 3149 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3150 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3151 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3152 } 3153 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3154 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3155 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio); 3156 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3157 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3158 3159 if ((!err) && stop) { 3160 /* STOP, raise data while clock is high */ 3161 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3162 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3163 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3164 } 3165 3166 return err; 3167 3168 } 3169 3170 3171 3172 3173 /*************************************************************** 3174 * tlan_ee_receive_byte 3175 * 3176 * Returns: 3177 * Nothing 3178 * Parms: 3179 * io_base The IO port base address for the 3180 * TLAN device with the EEPROM to 3181 * use. 3182 * data An address to a char to hold the 3183 * data sent from the EEPROM. 3184 * stop If TLAN_EEPROM_STOP is passed, a 3185 * stop cycle is sent after the 3186 * byte is received, and no ack is 3187 * sent. 3188 * 3189 * This function receives 8 bits of data from the EEPROM 3190 * over the serial link. It then sends and ack bit, or no 3191 * ack and a stop bit. This function is used to retrieve 3192 * data after the address of a byte in the EEPROM has been 3193 * sent. 3194 * 3195 **************************************************************/ 3196 3197 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop) 3198 { 3199 u8 place; 3200 u16 sio; 3201 3202 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3203 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3204 *data = 0; 3205 3206 /* Assume clock is low, tx is enabled; */ 3207 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3208 for (place = 0x80; place; place >>= 1) { 3209 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3210 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio)) 3211 *data |= place; 3212 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3213 } 3214 3215 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3216 if (!stop) { 3217 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */ 3218 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3219 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3220 } else { 3221 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */ 3222 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3223 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3224 /* STOP, raise data while clock is high */ 3225 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3226 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3227 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3228 } 3229 3230 } 3231 3232 3233 3234 3235 /*************************************************************** 3236 * tlan_ee_read_byte 3237 * 3238 * Returns: 3239 * No error = 0, else, the stage at which the error 3240 * occurred. 3241 * Parms: 3242 * io_base The IO port base address for the 3243 * TLAN device with the EEPROM to 3244 * use. 3245 * ee_addr The address of the byte in the 3246 * EEPROM whose contents are to be 3247 * retrieved. 3248 * data An address to a char to hold the 3249 * data obtained from the EEPROM. 3250 * 3251 * This function reads a byte of information from an byte 3252 * cell in the EEPROM. 3253 * 3254 **************************************************************/ 3255 3256 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data) 3257 { 3258 int err; 3259 struct tlan_priv *priv = netdev_priv(dev); 3260 unsigned long flags = 0; 3261 int ret = 0; 3262 3263 spin_lock_irqsave(&priv->lock, flags); 3264 3265 tlan_ee_send_start(dev->base_addr); 3266 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK); 3267 if (err) { 3268 ret = 1; 3269 goto fail; 3270 } 3271 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK); 3272 if (err) { 3273 ret = 2; 3274 goto fail; 3275 } 3276 tlan_ee_send_start(dev->base_addr); 3277 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK); 3278 if (err) { 3279 ret = 3; 3280 goto fail; 3281 } 3282 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP); 3283 fail: 3284 spin_unlock_irqrestore(&priv->lock, flags); 3285 3286 return ret; 3287 3288 } 3289 3290 3291 3292