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