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.rst 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, unsigned int txqueue); 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 priv->rx_list = (struct tlan_list *) 859 ALIGN((unsigned long)priv->dma_storage, 8); 860 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8); 861 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS; 862 priv->tx_list_dma = 863 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS; 864 865 err = 0; 866 for (i = 0; i < ETH_ALEN; i++) 867 err |= tlan_ee_read_byte(dev, 868 (u8) priv->adapter->addr_ofs + i, 869 (u8 *) &dev->dev_addr[i]); 870 if (err) { 871 pr_err("%s: Error reading MAC from eeprom: %d\n", 872 dev->name, err); 873 } 874 /* Olicom OC-2325/OC-2326 have the address byte-swapped */ 875 if (priv->adapter->addr_ofs == 0xf8) { 876 for (i = 0; i < ETH_ALEN; i += 2) { 877 char tmp = dev->dev_addr[i]; 878 dev->dev_addr[i] = dev->dev_addr[i + 1]; 879 dev->dev_addr[i + 1] = tmp; 880 } 881 } 882 883 netif_carrier_off(dev); 884 885 /* Device methods */ 886 dev->netdev_ops = &tlan_netdev_ops; 887 dev->ethtool_ops = &tlan_ethtool_ops; 888 dev->watchdog_timeo = TX_TIMEOUT; 889 890 return 0; 891 892 } 893 894 895 896 897 /*************************************************************** 898 * tlan_open 899 * 900 * Returns: 901 * 0 on success, error code otherwise. 902 * Parms: 903 * dev Structure of device to be opened. 904 * 905 * This routine puts the driver and TLAN adapter in a 906 * state where it is ready to send and receive packets. 907 * It allocates the IRQ, resets and brings the adapter 908 * out of reset, and allows interrupts. It also delays 909 * the startup for autonegotiation or sends a Rx GO 910 * command to the adapter, as appropriate. 911 * 912 **************************************************************/ 913 914 static int tlan_open(struct net_device *dev) 915 { 916 struct tlan_priv *priv = netdev_priv(dev); 917 int err; 918 919 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION); 920 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED, 921 dev->name, dev); 922 923 if (err) { 924 netdev_err(dev, "Cannot open because IRQ %d is already in use\n", 925 dev->irq); 926 return err; 927 } 928 929 timer_setup(&priv->timer, NULL, 0); 930 timer_setup(&priv->media_timer, tlan_phy_monitor, 0); 931 932 tlan_start(dev); 933 934 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n", 935 dev->name, priv->tlan_rev); 936 937 return 0; 938 939 } 940 941 942 943 /************************************************************** 944 * tlan_ioctl 945 * 946 * Returns: 947 * 0 on success, error code otherwise 948 * Params: 949 * dev structure of device to receive ioctl. 950 * 951 * rq ifreq structure to hold userspace data. 952 * 953 * cmd ioctl command. 954 * 955 * 956 *************************************************************/ 957 958 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 959 { 960 struct tlan_priv *priv = netdev_priv(dev); 961 struct mii_ioctl_data *data = if_mii(rq); 962 u32 phy = priv->phy[priv->phy_num]; 963 964 if (!priv->phy_online) 965 return -EAGAIN; 966 967 switch (cmd) { 968 case SIOCGMIIPHY: /* get address of MII PHY in use. */ 969 data->phy_id = phy; 970 /* fall through */ 971 972 973 case SIOCGMIIREG: /* read MII PHY register. */ 974 tlan_mii_read_reg(dev, data->phy_id & 0x1f, 975 data->reg_num & 0x1f, &data->val_out); 976 return 0; 977 978 979 case SIOCSMIIREG: /* write MII PHY register. */ 980 tlan_mii_write_reg(dev, data->phy_id & 0x1f, 981 data->reg_num & 0x1f, data->val_in); 982 return 0; 983 default: 984 return -EOPNOTSUPP; 985 } 986 } 987 988 989 /*************************************************************** 990 * tlan_tx_timeout 991 * 992 * Returns: nothing 993 * 994 * Params: 995 * dev structure of device which timed out 996 * during transmit. 997 * 998 **************************************************************/ 999 1000 static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue) 1001 { 1002 1003 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name); 1004 1005 /* Ok so we timed out, lets see what we can do about it...*/ 1006 tlan_free_lists(dev); 1007 tlan_reset_lists(dev); 1008 tlan_read_and_clear_stats(dev, TLAN_IGNORE); 1009 tlan_reset_adapter(dev); 1010 netif_trans_update(dev); /* prevent tx timeout */ 1011 netif_wake_queue(dev); 1012 1013 } 1014 1015 1016 /*************************************************************** 1017 * tlan_tx_timeout_work 1018 * 1019 * Returns: nothing 1020 * 1021 * Params: 1022 * work work item of device which timed out 1023 * 1024 **************************************************************/ 1025 1026 static void tlan_tx_timeout_work(struct work_struct *work) 1027 { 1028 struct tlan_priv *priv = 1029 container_of(work, struct tlan_priv, tlan_tqueue); 1030 1031 tlan_tx_timeout(priv->dev, UINT_MAX); 1032 } 1033 1034 1035 1036 /*************************************************************** 1037 * tlan_start_tx 1038 * 1039 * Returns: 1040 * 0 on success, non-zero on failure. 1041 * Parms: 1042 * skb A pointer to the sk_buff containing the 1043 * frame to be sent. 1044 * dev The device to send the data on. 1045 * 1046 * This function adds a frame to the Tx list to be sent 1047 * ASAP. First it verifies that the adapter is ready and 1048 * there is room in the queue. Then it sets up the next 1049 * available list, copies the frame to the corresponding 1050 * buffer. If the adapter Tx channel is idle, it gives 1051 * the adapter a Tx Go command on the list, otherwise it 1052 * sets the forward address of the previous list to point 1053 * to this one. Then it frees the sk_buff. 1054 * 1055 **************************************************************/ 1056 1057 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev) 1058 { 1059 struct tlan_priv *priv = netdev_priv(dev); 1060 dma_addr_t tail_list_phys; 1061 struct tlan_list *tail_list; 1062 unsigned long flags; 1063 unsigned int txlen; 1064 1065 if (!priv->phy_online) { 1066 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n", 1067 dev->name); 1068 dev_kfree_skb_any(skb); 1069 return NETDEV_TX_OK; 1070 } 1071 1072 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE)) 1073 return NETDEV_TX_OK; 1074 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE); 1075 1076 tail_list = priv->tx_list + priv->tx_tail; 1077 tail_list_phys = 1078 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail; 1079 1080 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) { 1081 TLAN_DBG(TLAN_DEBUG_TX, 1082 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n", 1083 dev->name, priv->tx_head, priv->tx_tail); 1084 netif_stop_queue(dev); 1085 priv->tx_busy_count++; 1086 return NETDEV_TX_BUSY; 1087 } 1088 1089 tail_list->forward = 0; 1090 1091 tail_list->buffer[0].address = pci_map_single(priv->pci_dev, 1092 skb->data, txlen, 1093 PCI_DMA_TODEVICE); 1094 tlan_store_skb(tail_list, skb); 1095 1096 tail_list->frame_size = (u16) txlen; 1097 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen; 1098 tail_list->buffer[1].count = 0; 1099 tail_list->buffer[1].address = 0; 1100 1101 spin_lock_irqsave(&priv->lock, flags); 1102 tail_list->c_stat = TLAN_CSTAT_READY; 1103 if (!priv->tx_in_progress) { 1104 priv->tx_in_progress = 1; 1105 TLAN_DBG(TLAN_DEBUG_TX, 1106 "TRANSMIT: Starting TX on buffer %d\n", 1107 priv->tx_tail); 1108 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM); 1109 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD); 1110 } else { 1111 TLAN_DBG(TLAN_DEBUG_TX, 1112 "TRANSMIT: Adding buffer %d to TX channel\n", 1113 priv->tx_tail); 1114 if (priv->tx_tail == 0) { 1115 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward 1116 = tail_list_phys; 1117 } else { 1118 (priv->tx_list + (priv->tx_tail - 1))->forward 1119 = tail_list_phys; 1120 } 1121 } 1122 spin_unlock_irqrestore(&priv->lock, flags); 1123 1124 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS); 1125 1126 return NETDEV_TX_OK; 1127 1128 } 1129 1130 1131 1132 1133 /*************************************************************** 1134 * tlan_handle_interrupt 1135 * 1136 * Returns: 1137 * Nothing 1138 * Parms: 1139 * irq The line on which the interrupt 1140 * occurred. 1141 * dev_id A pointer to the device assigned to 1142 * this irq line. 1143 * 1144 * This function handles an interrupt generated by its 1145 * assigned TLAN adapter. The function deactivates 1146 * interrupts on its adapter, records the type of 1147 * interrupt, executes the appropriate subhandler, and 1148 * acknowdges the interrupt to the adapter (thus 1149 * re-enabling adapter interrupts. 1150 * 1151 **************************************************************/ 1152 1153 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id) 1154 { 1155 struct net_device *dev = dev_id; 1156 struct tlan_priv *priv = netdev_priv(dev); 1157 u16 host_int; 1158 u16 type; 1159 1160 spin_lock(&priv->lock); 1161 1162 host_int = inw(dev->base_addr + TLAN_HOST_INT); 1163 type = (host_int & TLAN_HI_IT_MASK) >> 2; 1164 if (type) { 1165 u32 ack; 1166 u32 host_cmd; 1167 1168 outw(host_int, dev->base_addr + TLAN_HOST_INT); 1169 ack = tlan_int_vector[type](dev, host_int); 1170 1171 if (ack) { 1172 host_cmd = TLAN_HC_ACK | ack | (type << 18); 1173 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD); 1174 } 1175 } 1176 1177 spin_unlock(&priv->lock); 1178 1179 return IRQ_RETVAL(type); 1180 } 1181 1182 1183 1184 1185 /*************************************************************** 1186 * tlan_close 1187 * 1188 * Returns: 1189 * An error code. 1190 * Parms: 1191 * dev The device structure of the device to 1192 * close. 1193 * 1194 * This function shuts down the adapter. It records any 1195 * stats, puts the adapter into reset state, deactivates 1196 * its time as needed, and frees the irq it is using. 1197 * 1198 **************************************************************/ 1199 1200 static int tlan_close(struct net_device *dev) 1201 { 1202 tlan_stop(dev); 1203 1204 free_irq(dev->irq, dev); 1205 tlan_free_lists(dev); 1206 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name); 1207 1208 return 0; 1209 1210 } 1211 1212 1213 1214 1215 /*************************************************************** 1216 * tlan_get_stats 1217 * 1218 * Returns: 1219 * A pointer to the device's statistics structure. 1220 * Parms: 1221 * dev The device structure to return the 1222 * stats for. 1223 * 1224 * This function updates the devices statistics by reading 1225 * the TLAN chip's onboard registers. Then it returns the 1226 * address of the statistics structure. 1227 * 1228 **************************************************************/ 1229 1230 static struct net_device_stats *tlan_get_stats(struct net_device *dev) 1231 { 1232 struct tlan_priv *priv = netdev_priv(dev); 1233 int i; 1234 1235 /* Should only read stats if open ? */ 1236 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1237 1238 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name, 1239 priv->rx_eoc_count); 1240 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name, 1241 priv->tx_busy_count); 1242 if (debug & TLAN_DEBUG_GNRL) { 1243 tlan_print_dio(dev->base_addr); 1244 tlan_phy_print(dev); 1245 } 1246 if (debug & TLAN_DEBUG_LIST) { 1247 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) 1248 tlan_print_list(priv->rx_list + i, "RX", i); 1249 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) 1250 tlan_print_list(priv->tx_list + i, "TX", i); 1251 } 1252 1253 return &dev->stats; 1254 1255 } 1256 1257 1258 1259 1260 /*************************************************************** 1261 * tlan_set_multicast_list 1262 * 1263 * Returns: 1264 * Nothing 1265 * Parms: 1266 * dev The device structure to set the 1267 * multicast list for. 1268 * 1269 * This function sets the TLAN adaptor to various receive 1270 * modes. If the IFF_PROMISC flag is set, promiscuous 1271 * mode is acitviated. Otherwise, promiscuous mode is 1272 * turned off. If the IFF_ALLMULTI flag is set, then 1273 * the hash table is set to receive all group addresses. 1274 * Otherwise, the first three multicast addresses are 1275 * stored in AREG_1-3, and the rest are selected via the 1276 * hash table, as necessary. 1277 * 1278 **************************************************************/ 1279 1280 static void tlan_set_multicast_list(struct net_device *dev) 1281 { 1282 struct netdev_hw_addr *ha; 1283 u32 hash1 = 0; 1284 u32 hash2 = 0; 1285 int i; 1286 u32 offset; 1287 u8 tmp; 1288 1289 if (dev->flags & IFF_PROMISC) { 1290 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1291 tlan_dio_write8(dev->base_addr, 1292 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF); 1293 } else { 1294 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1295 tlan_dio_write8(dev->base_addr, 1296 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF); 1297 if (dev->flags & IFF_ALLMULTI) { 1298 for (i = 0; i < 3; i++) 1299 tlan_set_mac(dev, i + 1, NULL); 1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, 1301 0xffffffff); 1302 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, 1303 0xffffffff); 1304 } else { 1305 i = 0; 1306 netdev_for_each_mc_addr(ha, dev) { 1307 if (i < 3) { 1308 tlan_set_mac(dev, i + 1, 1309 (char *) &ha->addr); 1310 } else { 1311 offset = 1312 tlan_hash_func((u8 *)&ha->addr); 1313 if (offset < 32) 1314 hash1 |= (1 << offset); 1315 else 1316 hash2 |= (1 << (offset - 32)); 1317 } 1318 i++; 1319 } 1320 for ( ; i < 3; i++) 1321 tlan_set_mac(dev, i + 1, NULL); 1322 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1); 1323 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2); 1324 } 1325 } 1326 1327 } 1328 1329 1330 1331 /***************************************************************************** 1332 ****************************************************************************** 1333 1334 ThunderLAN driver interrupt vectors and table 1335 1336 please see chap. 4, "Interrupt Handling" of the "ThunderLAN 1337 Programmer's Guide" for more informations on handling interrupts 1338 generated by TLAN based adapters. 1339 1340 ****************************************************************************** 1341 *****************************************************************************/ 1342 1343 1344 1345 1346 /*************************************************************** 1347 * tlan_handle_tx_eof 1348 * 1349 * Returns: 1350 * 1 1351 * Parms: 1352 * dev Device assigned the IRQ that was 1353 * raised. 1354 * host_int The contents of the HOST_INT 1355 * port. 1356 * 1357 * This function handles Tx EOF interrupts which are raised 1358 * by the adapter when it has completed sending the 1359 * contents of a buffer. If detemines which list/buffer 1360 * was completed and resets it. If the buffer was the last 1361 * in the channel (EOC), then the function checks to see if 1362 * another buffer is ready to send, and if so, sends a Tx 1363 * Go command. Finally, the driver activates/continues the 1364 * activity LED. 1365 * 1366 **************************************************************/ 1367 1368 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int) 1369 { 1370 struct tlan_priv *priv = netdev_priv(dev); 1371 int eoc = 0; 1372 struct tlan_list *head_list; 1373 dma_addr_t head_list_phys; 1374 u32 ack = 0; 1375 u16 tmp_c_stat; 1376 1377 TLAN_DBG(TLAN_DEBUG_TX, 1378 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n", 1379 priv->tx_head, priv->tx_tail); 1380 head_list = priv->tx_list + priv->tx_head; 1381 1382 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1383 && (ack < 255)) { 1384 struct sk_buff *skb = tlan_get_skb(head_list); 1385 1386 ack++; 1387 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address, 1388 max(skb->len, 1389 (unsigned int)TLAN_MIN_FRAME_SIZE), 1390 PCI_DMA_TODEVICE); 1391 dev_kfree_skb_any(skb); 1392 head_list->buffer[8].address = 0; 1393 head_list->buffer[9].address = 0; 1394 1395 if (tmp_c_stat & TLAN_CSTAT_EOC) 1396 eoc = 1; 1397 1398 dev->stats.tx_bytes += head_list->frame_size; 1399 1400 head_list->c_stat = TLAN_CSTAT_UNUSED; 1401 netif_start_queue(dev); 1402 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS); 1403 head_list = priv->tx_list + priv->tx_head; 1404 } 1405 1406 if (!ack) 1407 netdev_info(dev, 1408 "Received interrupt for uncompleted TX frame\n"); 1409 1410 if (eoc) { 1411 TLAN_DBG(TLAN_DEBUG_TX, 1412 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n", 1413 priv->tx_head, priv->tx_tail); 1414 head_list = priv->tx_list + priv->tx_head; 1415 head_list_phys = priv->tx_list_dma 1416 + sizeof(struct tlan_list)*priv->tx_head; 1417 if ((head_list->c_stat & TLAN_CSTAT_READY) 1418 == TLAN_CSTAT_READY) { 1419 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1420 ack |= TLAN_HC_GO; 1421 } else { 1422 priv->tx_in_progress = 0; 1423 } 1424 } 1425 1426 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1427 tlan_dio_write8(dev->base_addr, 1428 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1429 if (priv->timer.function == NULL) { 1430 priv->timer.function = tlan_timer; 1431 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1432 priv->timer_set_at = jiffies; 1433 priv->timer_type = TLAN_TIMER_ACTIVITY; 1434 add_timer(&priv->timer); 1435 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1436 priv->timer_set_at = jiffies; 1437 } 1438 } 1439 1440 return ack; 1441 1442 } 1443 1444 1445 1446 1447 /*************************************************************** 1448 * TLan_HandleStatOverflow 1449 * 1450 * Returns: 1451 * 1 1452 * Parms: 1453 * dev Device assigned the IRQ that was 1454 * raised. 1455 * host_int The contents of the HOST_INT 1456 * port. 1457 * 1458 * This function handles the Statistics Overflow interrupt 1459 * which means that one or more of the TLAN statistics 1460 * registers has reached 1/2 capacity and needs to be read. 1461 * 1462 **************************************************************/ 1463 1464 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int) 1465 { 1466 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1467 1468 return 1; 1469 1470 } 1471 1472 1473 1474 1475 /*************************************************************** 1476 * TLan_HandleRxEOF 1477 * 1478 * Returns: 1479 * 1 1480 * Parms: 1481 * dev Device assigned the IRQ that was 1482 * raised. 1483 * host_int The contents of the HOST_INT 1484 * port. 1485 * 1486 * This function handles the Rx EOF interrupt which 1487 * indicates a frame has been received by the adapter from 1488 * the net and the frame has been transferred to memory. 1489 * The function determines the bounce buffer the frame has 1490 * been loaded into, creates a new sk_buff big enough to 1491 * hold the frame, and sends it to protocol stack. It 1492 * then resets the used buffer and appends it to the end 1493 * of the list. If the frame was the last in the Rx 1494 * channel (EOC), the function restarts the receive channel 1495 * by sending an Rx Go command to the adapter. Then it 1496 * activates/continues the activity LED. 1497 * 1498 **************************************************************/ 1499 1500 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int) 1501 { 1502 struct tlan_priv *priv = netdev_priv(dev); 1503 u32 ack = 0; 1504 int eoc = 0; 1505 struct tlan_list *head_list; 1506 struct sk_buff *skb; 1507 struct tlan_list *tail_list; 1508 u16 tmp_c_stat; 1509 dma_addr_t head_list_phys; 1510 1511 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n", 1512 priv->rx_head, priv->rx_tail); 1513 head_list = priv->rx_list + priv->rx_head; 1514 head_list_phys = 1515 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head; 1516 1517 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1518 && (ack < 255)) { 1519 dma_addr_t frame_dma = head_list->buffer[0].address; 1520 u32 frame_size = head_list->frame_size; 1521 struct sk_buff *new_skb; 1522 1523 ack++; 1524 if (tmp_c_stat & TLAN_CSTAT_EOC) 1525 eoc = 1; 1526 1527 new_skb = netdev_alloc_skb_ip_align(dev, 1528 TLAN_MAX_FRAME_SIZE + 5); 1529 if (!new_skb) 1530 goto drop_and_reuse; 1531 1532 skb = tlan_get_skb(head_list); 1533 pci_unmap_single(priv->pci_dev, frame_dma, 1534 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1535 skb_put(skb, frame_size); 1536 1537 dev->stats.rx_bytes += frame_size; 1538 1539 skb->protocol = eth_type_trans(skb, dev); 1540 netif_rx(skb); 1541 1542 head_list->buffer[0].address = 1543 pci_map_single(priv->pci_dev, new_skb->data, 1544 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1545 1546 tlan_store_skb(head_list, new_skb); 1547 drop_and_reuse: 1548 head_list->forward = 0; 1549 head_list->c_stat = 0; 1550 tail_list = priv->rx_list + priv->rx_tail; 1551 tail_list->forward = head_list_phys; 1552 1553 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS); 1554 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS); 1555 head_list = priv->rx_list + priv->rx_head; 1556 head_list_phys = priv->rx_list_dma 1557 + sizeof(struct tlan_list)*priv->rx_head; 1558 } 1559 1560 if (!ack) 1561 netdev_info(dev, 1562 "Received interrupt for uncompleted RX frame\n"); 1563 1564 1565 if (eoc) { 1566 TLAN_DBG(TLAN_DEBUG_RX, 1567 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n", 1568 priv->rx_head, priv->rx_tail); 1569 head_list = priv->rx_list + priv->rx_head; 1570 head_list_phys = priv->rx_list_dma 1571 + sizeof(struct tlan_list)*priv->rx_head; 1572 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1573 ack |= TLAN_HC_GO | TLAN_HC_RT; 1574 priv->rx_eoc_count++; 1575 } 1576 1577 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1578 tlan_dio_write8(dev->base_addr, 1579 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1580 if (priv->timer.function == NULL) { 1581 priv->timer.function = tlan_timer; 1582 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1583 priv->timer_set_at = jiffies; 1584 priv->timer_type = TLAN_TIMER_ACTIVITY; 1585 add_timer(&priv->timer); 1586 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1587 priv->timer_set_at = jiffies; 1588 } 1589 } 1590 1591 return ack; 1592 1593 } 1594 1595 1596 1597 1598 /*************************************************************** 1599 * tlan_handle_dummy 1600 * 1601 * Returns: 1602 * 1 1603 * Parms: 1604 * dev Device assigned the IRQ that was 1605 * raised. 1606 * host_int The contents of the HOST_INT 1607 * port. 1608 * 1609 * This function handles the Dummy interrupt, which is 1610 * raised whenever a test interrupt is generated by setting 1611 * the Req_Int bit of HOST_CMD to 1. 1612 * 1613 **************************************************************/ 1614 1615 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int) 1616 { 1617 netdev_info(dev, "Test interrupt\n"); 1618 return 1; 1619 1620 } 1621 1622 1623 1624 1625 /*************************************************************** 1626 * tlan_handle_tx_eoc 1627 * 1628 * Returns: 1629 * 1 1630 * Parms: 1631 * dev Device assigned the IRQ that was 1632 * raised. 1633 * host_int The contents of the HOST_INT 1634 * port. 1635 * 1636 * This driver is structured to determine EOC occurrences by 1637 * reading the CSTAT member of the list structure. Tx EOC 1638 * interrupts are disabled via the DIO INTDIS register. 1639 * However, TLAN chips before revision 3.0 didn't have this 1640 * functionality, so process EOC events if this is the 1641 * case. 1642 * 1643 **************************************************************/ 1644 1645 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int) 1646 { 1647 struct tlan_priv *priv = netdev_priv(dev); 1648 struct tlan_list *head_list; 1649 dma_addr_t head_list_phys; 1650 u32 ack = 1; 1651 1652 if (priv->tlan_rev < 0x30) { 1653 TLAN_DBG(TLAN_DEBUG_TX, 1654 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n", 1655 priv->tx_head, priv->tx_tail); 1656 head_list = priv->tx_list + priv->tx_head; 1657 head_list_phys = priv->tx_list_dma 1658 + sizeof(struct tlan_list)*priv->tx_head; 1659 if ((head_list->c_stat & TLAN_CSTAT_READY) 1660 == TLAN_CSTAT_READY) { 1661 netif_stop_queue(dev); 1662 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1663 ack |= TLAN_HC_GO; 1664 } else { 1665 priv->tx_in_progress = 0; 1666 } 1667 } 1668 1669 return ack; 1670 1671 } 1672 1673 1674 1675 1676 /*************************************************************** 1677 * tlan_handle_status_check 1678 * 1679 * Returns: 1680 * 0 if Adapter check, 1 if Network Status check. 1681 * Parms: 1682 * dev Device assigned the IRQ that was 1683 * raised. 1684 * host_int The contents of the HOST_INT 1685 * port. 1686 * 1687 * This function handles Adapter Check/Network Status 1688 * interrupts generated by the adapter. It checks the 1689 * vector in the HOST_INT register to determine if it is 1690 * an Adapter Check interrupt. If so, it resets the 1691 * adapter. Otherwise it clears the status registers 1692 * and services the PHY. 1693 * 1694 **************************************************************/ 1695 1696 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int) 1697 { 1698 struct tlan_priv *priv = netdev_priv(dev); 1699 u32 ack; 1700 u32 error; 1701 u8 net_sts; 1702 u32 phy; 1703 u16 tlphy_ctl; 1704 u16 tlphy_sts; 1705 1706 ack = 1; 1707 if (host_int & TLAN_HI_IV_MASK) { 1708 netif_stop_queue(dev); 1709 error = inl(dev->base_addr + TLAN_CH_PARM); 1710 netdev_info(dev, "Adaptor Error = 0x%x\n", error); 1711 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1712 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD); 1713 1714 schedule_work(&priv->tlan_tqueue); 1715 1716 netif_wake_queue(dev); 1717 ack = 0; 1718 } else { 1719 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name); 1720 phy = priv->phy[priv->phy_num]; 1721 1722 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS); 1723 if (net_sts) { 1724 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts); 1725 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n", 1726 dev->name, (unsigned) net_sts); 1727 } 1728 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) { 1729 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts); 1730 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 1731 if (!(tlphy_sts & TLAN_TS_POLOK) && 1732 !(tlphy_ctl & TLAN_TC_SWAPOL)) { 1733 tlphy_ctl |= TLAN_TC_SWAPOL; 1734 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1735 tlphy_ctl); 1736 } else if ((tlphy_sts & TLAN_TS_POLOK) && 1737 (tlphy_ctl & TLAN_TC_SWAPOL)) { 1738 tlphy_ctl &= ~TLAN_TC_SWAPOL; 1739 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1740 tlphy_ctl); 1741 } 1742 1743 if (debug) 1744 tlan_phy_print(dev); 1745 } 1746 } 1747 1748 return ack; 1749 1750 } 1751 1752 1753 1754 1755 /*************************************************************** 1756 * tlan_handle_rx_eoc 1757 * 1758 * Returns: 1759 * 1 1760 * Parms: 1761 * dev Device assigned the IRQ that was 1762 * raised. 1763 * host_int The contents of the HOST_INT 1764 * port. 1765 * 1766 * This driver is structured to determine EOC occurrences by 1767 * reading the CSTAT member of the list structure. Rx EOC 1768 * interrupts are disabled via the DIO INTDIS register. 1769 * However, TLAN chips before revision 3.0 didn't have this 1770 * CSTAT member or a INTDIS register, so if this chip is 1771 * pre-3.0, process EOC interrupts normally. 1772 * 1773 **************************************************************/ 1774 1775 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int) 1776 { 1777 struct tlan_priv *priv = netdev_priv(dev); 1778 dma_addr_t head_list_phys; 1779 u32 ack = 1; 1780 1781 if (priv->tlan_rev < 0x30) { 1782 TLAN_DBG(TLAN_DEBUG_RX, 1783 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n", 1784 priv->rx_head, priv->rx_tail); 1785 head_list_phys = priv->rx_list_dma 1786 + sizeof(struct tlan_list)*priv->rx_head; 1787 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1788 ack |= TLAN_HC_GO | TLAN_HC_RT; 1789 priv->rx_eoc_count++; 1790 } 1791 1792 return ack; 1793 1794 } 1795 1796 1797 1798 1799 /***************************************************************************** 1800 ****************************************************************************** 1801 1802 ThunderLAN driver timer function 1803 1804 ****************************************************************************** 1805 *****************************************************************************/ 1806 1807 1808 /*************************************************************** 1809 * tlan_timer 1810 * 1811 * Returns: 1812 * Nothing 1813 * Parms: 1814 * data A value given to add timer when 1815 * add_timer was called. 1816 * 1817 * This function handles timed functionality for the 1818 * TLAN driver. The two current timer uses are for 1819 * delaying for autonegotionation and driving the ACT LED. 1820 * - Autonegotiation requires being allowed about 1821 * 2 1/2 seconds before attempting to transmit a 1822 * packet. It would be a very bad thing to hang 1823 * the kernel this long, so the driver doesn't 1824 * allow transmission 'til after this time, for 1825 * certain PHYs. It would be much nicer if all 1826 * PHYs were interrupt-capable like the internal 1827 * PHY. 1828 * - The ACT LED, which shows adapter activity, is 1829 * driven by the driver, and so must be left on 1830 * for a short period to power up the LED so it 1831 * can be seen. This delay can be changed by 1832 * changing the TLAN_TIMER_ACT_DELAY in tlan.h, 1833 * if desired. 100 ms produces a slightly 1834 * sluggish response. 1835 * 1836 **************************************************************/ 1837 1838 static void tlan_timer(struct timer_list *t) 1839 { 1840 struct tlan_priv *priv = from_timer(priv, t, timer); 1841 struct net_device *dev = priv->dev; 1842 u32 elapsed; 1843 unsigned long flags = 0; 1844 1845 priv->timer.function = NULL; 1846 1847 switch (priv->timer_type) { 1848 case TLAN_TIMER_PHY_PDOWN: 1849 tlan_phy_power_down(dev); 1850 break; 1851 case TLAN_TIMER_PHY_PUP: 1852 tlan_phy_power_up(dev); 1853 break; 1854 case TLAN_TIMER_PHY_RESET: 1855 tlan_phy_reset(dev); 1856 break; 1857 case TLAN_TIMER_PHY_START_LINK: 1858 tlan_phy_start_link(dev); 1859 break; 1860 case TLAN_TIMER_PHY_FINISH_AN: 1861 tlan_phy_finish_auto_neg(dev); 1862 break; 1863 case TLAN_TIMER_FINISH_RESET: 1864 tlan_finish_reset(dev); 1865 break; 1866 case TLAN_TIMER_ACTIVITY: 1867 spin_lock_irqsave(&priv->lock, flags); 1868 if (priv->timer.function == NULL) { 1869 elapsed = jiffies - priv->timer_set_at; 1870 if (elapsed >= TLAN_TIMER_ACT_DELAY) { 1871 tlan_dio_write8(dev->base_addr, 1872 TLAN_LED_REG, TLAN_LED_LINK); 1873 } else { 1874 priv->timer.expires = priv->timer_set_at 1875 + TLAN_TIMER_ACT_DELAY; 1876 spin_unlock_irqrestore(&priv->lock, flags); 1877 add_timer(&priv->timer); 1878 break; 1879 } 1880 } 1881 spin_unlock_irqrestore(&priv->lock, flags); 1882 break; 1883 default: 1884 break; 1885 } 1886 1887 } 1888 1889 1890 /***************************************************************************** 1891 ****************************************************************************** 1892 1893 ThunderLAN driver adapter related routines 1894 1895 ****************************************************************************** 1896 *****************************************************************************/ 1897 1898 1899 /*************************************************************** 1900 * tlan_reset_lists 1901 * 1902 * Returns: 1903 * Nothing 1904 * Parms: 1905 * dev The device structure with the list 1906 * structures to be reset. 1907 * 1908 * This routine sets the variables associated with managing 1909 * the TLAN lists to their initial values. 1910 * 1911 **************************************************************/ 1912 1913 static void tlan_reset_lists(struct net_device *dev) 1914 { 1915 struct tlan_priv *priv = netdev_priv(dev); 1916 int i; 1917 struct tlan_list *list; 1918 dma_addr_t list_phys; 1919 struct sk_buff *skb; 1920 1921 priv->tx_head = 0; 1922 priv->tx_tail = 0; 1923 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1924 list = priv->tx_list + i; 1925 list->c_stat = TLAN_CSTAT_UNUSED; 1926 list->buffer[0].address = 0; 1927 list->buffer[2].count = 0; 1928 list->buffer[2].address = 0; 1929 list->buffer[8].address = 0; 1930 list->buffer[9].address = 0; 1931 } 1932 1933 priv->rx_head = 0; 1934 priv->rx_tail = TLAN_NUM_RX_LISTS - 1; 1935 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1936 list = priv->rx_list + i; 1937 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i; 1938 list->c_stat = TLAN_CSTAT_READY; 1939 list->frame_size = TLAN_MAX_FRAME_SIZE; 1940 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; 1941 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5); 1942 if (!skb) 1943 break; 1944 1945 list->buffer[0].address = pci_map_single(priv->pci_dev, 1946 skb->data, 1947 TLAN_MAX_FRAME_SIZE, 1948 PCI_DMA_FROMDEVICE); 1949 tlan_store_skb(list, skb); 1950 list->buffer[1].count = 0; 1951 list->buffer[1].address = 0; 1952 list->forward = list_phys + sizeof(struct tlan_list); 1953 } 1954 1955 /* in case ran out of memory early, clear bits */ 1956 while (i < TLAN_NUM_RX_LISTS) { 1957 tlan_store_skb(priv->rx_list + i, NULL); 1958 ++i; 1959 } 1960 list->forward = 0; 1961 1962 } 1963 1964 1965 static void tlan_free_lists(struct net_device *dev) 1966 { 1967 struct tlan_priv *priv = netdev_priv(dev); 1968 int i; 1969 struct tlan_list *list; 1970 struct sk_buff *skb; 1971 1972 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1973 list = priv->tx_list + i; 1974 skb = tlan_get_skb(list); 1975 if (skb) { 1976 pci_unmap_single( 1977 priv->pci_dev, 1978 list->buffer[0].address, 1979 max(skb->len, 1980 (unsigned int)TLAN_MIN_FRAME_SIZE), 1981 PCI_DMA_TODEVICE); 1982 dev_kfree_skb_any(skb); 1983 list->buffer[8].address = 0; 1984 list->buffer[9].address = 0; 1985 } 1986 } 1987 1988 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1989 list = priv->rx_list + i; 1990 skb = tlan_get_skb(list); 1991 if (skb) { 1992 pci_unmap_single(priv->pci_dev, 1993 list->buffer[0].address, 1994 TLAN_MAX_FRAME_SIZE, 1995 PCI_DMA_FROMDEVICE); 1996 dev_kfree_skb_any(skb); 1997 list->buffer[8].address = 0; 1998 list->buffer[9].address = 0; 1999 } 2000 } 2001 } 2002 2003 2004 2005 2006 /*************************************************************** 2007 * tlan_print_dio 2008 * 2009 * Returns: 2010 * Nothing 2011 * Parms: 2012 * io_base Base IO port of the device of 2013 * which to print DIO registers. 2014 * 2015 * This function prints out all the internal (DIO) 2016 * registers of a TLAN chip. 2017 * 2018 **************************************************************/ 2019 2020 static void tlan_print_dio(u16 io_base) 2021 { 2022 u32 data0, data1; 2023 int i; 2024 2025 pr_info("Contents of internal registers for io base 0x%04hx\n", 2026 io_base); 2027 pr_info("Off. +0 +4\n"); 2028 for (i = 0; i < 0x4C; i += 8) { 2029 data0 = tlan_dio_read32(io_base, i); 2030 data1 = tlan_dio_read32(io_base, i + 0x4); 2031 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1); 2032 } 2033 2034 } 2035 2036 2037 2038 2039 /*************************************************************** 2040 * TLan_PrintList 2041 * 2042 * Returns: 2043 * Nothing 2044 * Parms: 2045 * list A pointer to the struct tlan_list structure to 2046 * be printed. 2047 * type A string to designate type of list, 2048 * "Rx" or "Tx". 2049 * num The index of the list. 2050 * 2051 * This function prints out the contents of the list 2052 * pointed to by the list parameter. 2053 * 2054 **************************************************************/ 2055 2056 static void tlan_print_list(struct tlan_list *list, char *type, int num) 2057 { 2058 int i; 2059 2060 pr_info("%s List %d at %p\n", type, num, list); 2061 pr_info(" Forward = 0x%08x\n", list->forward); 2062 pr_info(" CSTAT = 0x%04hx\n", list->c_stat); 2063 pr_info(" Frame Size = 0x%04hx\n", list->frame_size); 2064 /* for (i = 0; i < 10; i++) { */ 2065 for (i = 0; i < 2; i++) { 2066 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n", 2067 i, list->buffer[i].count, list->buffer[i].address); 2068 } 2069 2070 } 2071 2072 2073 2074 2075 /*************************************************************** 2076 * tlan_read_and_clear_stats 2077 * 2078 * Returns: 2079 * Nothing 2080 * Parms: 2081 * dev Pointer to device structure of adapter 2082 * to which to read stats. 2083 * record Flag indicating whether to add 2084 * 2085 * This functions reads all the internal status registers 2086 * of the TLAN chip, which clears them as a side effect. 2087 * It then either adds the values to the device's status 2088 * struct, or discards them, depending on whether record 2089 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0). 2090 * 2091 **************************************************************/ 2092 2093 static void tlan_read_and_clear_stats(struct net_device *dev, int record) 2094 { 2095 u32 tx_good, tx_under; 2096 u32 rx_good, rx_over; 2097 u32 def_tx, crc, code; 2098 u32 multi_col, single_col; 2099 u32 excess_col, late_col, loss; 2100 2101 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2102 tx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2103 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2104 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2105 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2106 2107 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2108 rx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2109 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2110 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2111 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2112 2113 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR); 2114 def_tx = inb(dev->base_addr + TLAN_DIO_DATA); 2115 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2116 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2117 code = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2118 2119 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2120 multi_col = inb(dev->base_addr + TLAN_DIO_DATA); 2121 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2122 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2123 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8; 2124 2125 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2126 excess_col = inb(dev->base_addr + TLAN_DIO_DATA); 2127 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1); 2128 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2129 2130 if (record) { 2131 dev->stats.rx_packets += rx_good; 2132 dev->stats.rx_errors += rx_over + crc + code; 2133 dev->stats.tx_packets += tx_good; 2134 dev->stats.tx_errors += tx_under + loss; 2135 dev->stats.collisions += multi_col 2136 + single_col + excess_col + late_col; 2137 2138 dev->stats.rx_over_errors += rx_over; 2139 dev->stats.rx_crc_errors += crc; 2140 dev->stats.rx_frame_errors += code; 2141 2142 dev->stats.tx_aborted_errors += tx_under; 2143 dev->stats.tx_carrier_errors += loss; 2144 } 2145 2146 } 2147 2148 2149 2150 2151 /*************************************************************** 2152 * TLan_Reset 2153 * 2154 * Returns: 2155 * 0 2156 * Parms: 2157 * dev Pointer to device structure of adapter 2158 * to be reset. 2159 * 2160 * This function resets the adapter and it's physical 2161 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN 2162 * Programmer's Guide" for details. The routine tries to 2163 * implement what is detailed there, though adjustments 2164 * have been made. 2165 * 2166 **************************************************************/ 2167 2168 static void 2169 tlan_reset_adapter(struct net_device *dev) 2170 { 2171 struct tlan_priv *priv = netdev_priv(dev); 2172 int i; 2173 u32 addr; 2174 u32 data; 2175 u8 data8; 2176 2177 priv->tlan_full_duplex = false; 2178 priv->phy_online = 0; 2179 netif_carrier_off(dev); 2180 2181 /* 1. Assert reset bit. */ 2182 2183 data = inl(dev->base_addr + TLAN_HOST_CMD); 2184 data |= TLAN_HC_AD_RST; 2185 outl(data, dev->base_addr + TLAN_HOST_CMD); 2186 2187 udelay(1000); 2188 2189 /* 2. Turn off interrupts. (Probably isn't necessary) */ 2190 2191 data = inl(dev->base_addr + TLAN_HOST_CMD); 2192 data |= TLAN_HC_INT_OFF; 2193 outl(data, dev->base_addr + TLAN_HOST_CMD); 2194 2195 /* 3. Clear AREGs and HASHs. */ 2196 2197 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4) 2198 tlan_dio_write32(dev->base_addr, (u16) i, 0); 2199 2200 /* 4. Setup NetConfig register. */ 2201 2202 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; 2203 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data); 2204 2205 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */ 2206 2207 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD); 2208 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD); 2209 2210 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */ 2211 2212 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2213 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2214 tlan_set_bit(TLAN_NET_SIO_NMRST, addr); 2215 2216 /* 7. Setup the remaining registers. */ 2217 2218 if (priv->tlan_rev >= 0x30) { 2219 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC; 2220 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8); 2221 } 2222 tlan_phy_detect(dev); 2223 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN; 2224 2225 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) { 2226 data |= TLAN_NET_CFG_BIT; 2227 if (priv->aui == 1) { 2228 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a); 2229 } else if (priv->duplex == TLAN_DUPLEX_FULL) { 2230 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00); 2231 priv->tlan_full_duplex = true; 2232 } else { 2233 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08); 2234 } 2235 } 2236 2237 /* don't power down internal PHY if we're going to use it */ 2238 if (priv->phy_num == 0 || 2239 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)) 2240 data |= TLAN_NET_CFG_PHY_EN; 2241 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data); 2242 2243 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) 2244 tlan_finish_reset(dev); 2245 else 2246 tlan_phy_power_down(dev); 2247 2248 } 2249 2250 2251 2252 2253 static void 2254 tlan_finish_reset(struct net_device *dev) 2255 { 2256 struct tlan_priv *priv = netdev_priv(dev); 2257 u8 data; 2258 u32 phy; 2259 u8 sio; 2260 u16 status; 2261 u16 partner; 2262 u16 tlphy_ctl; 2263 u16 tlphy_par; 2264 u16 tlphy_id1, tlphy_id2; 2265 int i; 2266 2267 phy = priv->phy[priv->phy_num]; 2268 2269 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP; 2270 if (priv->tlan_full_duplex) 2271 data |= TLAN_NET_CMD_DUPLEX; 2272 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data); 2273 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5; 2274 if (priv->phy_num == 0) 2275 data |= TLAN_NET_MASK_MASK7; 2276 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data); 2277 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7); 2278 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1); 2279 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2); 2280 2281 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) || 2282 (priv->aui)) { 2283 status = MII_GS_LINK; 2284 netdev_info(dev, "Link forced\n"); 2285 } else { 2286 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2287 udelay(1000); 2288 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2289 if (status & MII_GS_LINK) { 2290 /* We only support link info on Nat.Sem. PHY's */ 2291 if ((tlphy_id1 == NAT_SEM_ID1) && 2292 (tlphy_id2 == NAT_SEM_ID2)) { 2293 tlan_mii_read_reg(dev, phy, MII_AN_LPA, 2294 &partner); 2295 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, 2296 &tlphy_par); 2297 2298 netdev_info(dev, 2299 "Link active, %s %uMbps %s-Duplex\n", 2300 !(tlphy_par & TLAN_PHY_AN_EN_STAT) 2301 ? "forced" : "Autonegotiation enabled,", 2302 tlphy_par & TLAN_PHY_SPEED_100 2303 ? 100 : 10, 2304 tlphy_par & TLAN_PHY_DUPLEX_FULL 2305 ? "Full" : "Half"); 2306 2307 if (tlphy_par & TLAN_PHY_AN_EN_STAT) { 2308 netdev_info(dev, "Partner capability:"); 2309 for (i = 5; i < 10; i++) 2310 if (partner & (1 << i)) 2311 pr_cont(" %s", 2312 media[i-5]); 2313 pr_cont("\n"); 2314 } 2315 } else 2316 netdev_info(dev, "Link active\n"); 2317 /* Enabling link beat monitoring */ 2318 priv->media_timer.expires = jiffies + HZ; 2319 add_timer(&priv->media_timer); 2320 } 2321 } 2322 2323 if (priv->phy_num == 0) { 2324 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 2325 tlphy_ctl |= TLAN_TC_INTEN; 2326 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl); 2327 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO); 2328 sio |= TLAN_NET_SIO_MINTEN; 2329 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio); 2330 } 2331 2332 if (status & MII_GS_LINK) { 2333 tlan_set_mac(dev, 0, dev->dev_addr); 2334 priv->phy_online = 1; 2335 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1); 2336 if (debug >= 1 && debug != TLAN_DEBUG_PROBE) 2337 outb((TLAN_HC_REQ_INT >> 8), 2338 dev->base_addr + TLAN_HOST_CMD + 1); 2339 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM); 2340 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD); 2341 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); 2342 netif_carrier_on(dev); 2343 } else { 2344 netdev_info(dev, "Link inactive, will retry in 10 secs...\n"); 2345 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET); 2346 return; 2347 } 2348 tlan_set_multicast_list(dev); 2349 2350 } 2351 2352 2353 2354 2355 /*************************************************************** 2356 * tlan_set_mac 2357 * 2358 * Returns: 2359 * Nothing 2360 * Parms: 2361 * dev Pointer to device structure of adapter 2362 * on which to change the AREG. 2363 * areg The AREG to set the address in (0 - 3). 2364 * mac A pointer to an array of chars. Each 2365 * element stores one byte of the address. 2366 * IE, it isn't in ascii. 2367 * 2368 * This function transfers a MAC address to one of the 2369 * TLAN AREGs (address registers). The TLAN chip locks 2370 * the register on writing to offset 0 and unlocks the 2371 * register after writing to offset 5. If NULL is passed 2372 * in mac, then the AREG is filled with 0's. 2373 * 2374 **************************************************************/ 2375 2376 static void tlan_set_mac(struct net_device *dev, int areg, char *mac) 2377 { 2378 int i; 2379 2380 areg *= 6; 2381 2382 if (mac != NULL) { 2383 for (i = 0; i < 6; i++) 2384 tlan_dio_write8(dev->base_addr, 2385 TLAN_AREG_0 + areg + i, mac[i]); 2386 } else { 2387 for (i = 0; i < 6; i++) 2388 tlan_dio_write8(dev->base_addr, 2389 TLAN_AREG_0 + areg + i, 0); 2390 } 2391 2392 } 2393 2394 2395 2396 2397 /***************************************************************************** 2398 ****************************************************************************** 2399 2400 ThunderLAN driver PHY layer routines 2401 2402 ****************************************************************************** 2403 *****************************************************************************/ 2404 2405 2406 2407 /********************************************************************* 2408 * tlan_phy_print 2409 * 2410 * Returns: 2411 * Nothing 2412 * Parms: 2413 * dev A pointer to the device structure of the 2414 * TLAN device having the PHYs to be detailed. 2415 * 2416 * This function prints the registers a PHY (aka transceiver). 2417 * 2418 ********************************************************************/ 2419 2420 static void tlan_phy_print(struct net_device *dev) 2421 { 2422 struct tlan_priv *priv = netdev_priv(dev); 2423 u16 i, data0, data1, data2, data3, phy; 2424 2425 phy = priv->phy[priv->phy_num]; 2426 2427 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2428 netdev_info(dev, "Unmanaged PHY\n"); 2429 } else if (phy <= TLAN_PHY_MAX_ADDR) { 2430 netdev_info(dev, "PHY 0x%02x\n", phy); 2431 pr_info(" Off. +0 +1 +2 +3\n"); 2432 for (i = 0; i < 0x20; i += 4) { 2433 tlan_mii_read_reg(dev, phy, i, &data0); 2434 tlan_mii_read_reg(dev, phy, i + 1, &data1); 2435 tlan_mii_read_reg(dev, phy, i + 2, &data2); 2436 tlan_mii_read_reg(dev, phy, i + 3, &data3); 2437 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n", 2438 i, data0, data1, data2, data3); 2439 } 2440 } else { 2441 netdev_info(dev, "Invalid PHY\n"); 2442 } 2443 2444 } 2445 2446 2447 2448 2449 /********************************************************************* 2450 * tlan_phy_detect 2451 * 2452 * Returns: 2453 * Nothing 2454 * Parms: 2455 * dev A pointer to the device structure of the adapter 2456 * for which the PHY needs determined. 2457 * 2458 * So far I've found that adapters which have external PHYs 2459 * may also use the internal PHY for part of the functionality. 2460 * (eg, AUI/Thinnet). This function finds out if this TLAN 2461 * chip has an internal PHY, and then finds the first external 2462 * PHY (starting from address 0) if it exists). 2463 * 2464 ********************************************************************/ 2465 2466 static void tlan_phy_detect(struct net_device *dev) 2467 { 2468 struct tlan_priv *priv = netdev_priv(dev); 2469 u16 control; 2470 u16 hi; 2471 u16 lo; 2472 u32 phy; 2473 2474 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2475 priv->phy_num = 0xffff; 2476 return; 2477 } 2478 2479 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi); 2480 2481 if (hi != 0xffff) 2482 priv->phy[0] = TLAN_PHY_MAX_ADDR; 2483 else 2484 priv->phy[0] = TLAN_PHY_NONE; 2485 2486 priv->phy[1] = TLAN_PHY_NONE; 2487 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) { 2488 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control); 2489 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi); 2490 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo); 2491 if ((control != 0xffff) || 2492 (hi != 0xffff) || (lo != 0xffff)) { 2493 TLAN_DBG(TLAN_DEBUG_GNRL, 2494 "PHY found at %02x %04x %04x %04x\n", 2495 phy, control, hi, lo); 2496 if ((priv->phy[1] == TLAN_PHY_NONE) && 2497 (phy != TLAN_PHY_MAX_ADDR)) { 2498 priv->phy[1] = phy; 2499 } 2500 } 2501 } 2502 2503 if (priv->phy[1] != TLAN_PHY_NONE) 2504 priv->phy_num = 1; 2505 else if (priv->phy[0] != TLAN_PHY_NONE) 2506 priv->phy_num = 0; 2507 else 2508 netdev_info(dev, "Cannot initialize device, no PHY was found!\n"); 2509 2510 } 2511 2512 2513 2514 2515 static void tlan_phy_power_down(struct net_device *dev) 2516 { 2517 struct tlan_priv *priv = netdev_priv(dev); 2518 u16 value; 2519 2520 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name); 2521 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE; 2522 tlan_mii_sync(dev->base_addr); 2523 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2524 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) { 2525 /* if using internal PHY, the external PHY must be powered on */ 2526 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) 2527 value = MII_GC_ISOLATE; /* just isolate it from MII */ 2528 tlan_mii_sync(dev->base_addr); 2529 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value); 2530 } 2531 2532 /* Wait for 50 ms and powerup 2533 * This is abitrary. It is intended to make sure the 2534 * transceiver settles. 2535 */ 2536 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP); 2537 2538 } 2539 2540 2541 2542 2543 static void tlan_phy_power_up(struct net_device *dev) 2544 { 2545 struct tlan_priv *priv = netdev_priv(dev); 2546 u16 value; 2547 2548 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name); 2549 tlan_mii_sync(dev->base_addr); 2550 value = MII_GC_LOOPBK; 2551 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2552 tlan_mii_sync(dev->base_addr); 2553 /* Wait for 500 ms and reset the 2554 * transceiver. The TLAN docs say both 50 ms and 2555 * 500 ms, so do the longer, just in case. 2556 */ 2557 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET); 2558 2559 } 2560 2561 2562 2563 2564 static void tlan_phy_reset(struct net_device *dev) 2565 { 2566 struct tlan_priv *priv = netdev_priv(dev); 2567 u16 phy; 2568 u16 value; 2569 unsigned long timeout = jiffies + HZ; 2570 2571 phy = priv->phy[priv->phy_num]; 2572 2573 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name); 2574 tlan_mii_sync(dev->base_addr); 2575 value = MII_GC_LOOPBK | MII_GC_RESET; 2576 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value); 2577 do { 2578 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value); 2579 if (time_after(jiffies, timeout)) { 2580 netdev_err(dev, "PHY reset timeout\n"); 2581 return; 2582 } 2583 } while (value & MII_GC_RESET); 2584 2585 /* Wait for 500 ms and initialize. 2586 * I don't remember why I wait this long. 2587 * I've changed this to 50ms, as it seems long enough. 2588 */ 2589 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK); 2590 2591 } 2592 2593 2594 2595 2596 static void tlan_phy_start_link(struct net_device *dev) 2597 { 2598 struct tlan_priv *priv = netdev_priv(dev); 2599 u16 ability; 2600 u16 control; 2601 u16 data; 2602 u16 phy; 2603 u16 status; 2604 u16 tctl; 2605 2606 phy = priv->phy[priv->phy_num]; 2607 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name); 2608 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2609 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability); 2610 2611 if ((status & MII_GS_AUTONEG) && 2612 (!priv->aui)) { 2613 ability = status >> 11; 2614 if (priv->speed == TLAN_SPEED_10 && 2615 priv->duplex == TLAN_DUPLEX_HALF) { 2616 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000); 2617 } else if (priv->speed == TLAN_SPEED_10 && 2618 priv->duplex == TLAN_DUPLEX_FULL) { 2619 priv->tlan_full_duplex = true; 2620 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100); 2621 } else if (priv->speed == TLAN_SPEED_100 && 2622 priv->duplex == TLAN_DUPLEX_HALF) { 2623 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000); 2624 } else if (priv->speed == TLAN_SPEED_100 && 2625 priv->duplex == TLAN_DUPLEX_FULL) { 2626 priv->tlan_full_duplex = true; 2627 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100); 2628 } else { 2629 2630 /* Set Auto-Neg advertisement */ 2631 tlan_mii_write_reg(dev, phy, MII_AN_ADV, 2632 (ability << 5) | 1); 2633 /* Enablee Auto-Neg */ 2634 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000); 2635 /* Restart Auto-Neg */ 2636 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200); 2637 /* Wait for 4 sec for autonegotiation 2638 * to complete. The max spec time is less than this 2639 * but the card need additional time to start AN. 2640 * .5 sec should be plenty extra. 2641 */ 2642 netdev_info(dev, "Starting autonegotiation\n"); 2643 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN); 2644 return; 2645 } 2646 2647 } 2648 2649 if ((priv->aui) && (priv->phy_num != 0)) { 2650 priv->phy_num = 0; 2651 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN 2652 | TLAN_NET_CFG_PHY_EN; 2653 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data); 2654 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN); 2655 return; 2656 } else if (priv->phy_num == 0) { 2657 control = 0; 2658 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl); 2659 if (priv->aui) { 2660 tctl |= TLAN_TC_AUISEL; 2661 } else { 2662 tctl &= ~TLAN_TC_AUISEL; 2663 if (priv->duplex == TLAN_DUPLEX_FULL) { 2664 control |= MII_GC_DUPLEX; 2665 priv->tlan_full_duplex = true; 2666 } 2667 if (priv->speed == TLAN_SPEED_100) 2668 control |= MII_GC_SPEEDSEL; 2669 } 2670 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control); 2671 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl); 2672 } 2673 2674 /* Wait for 2 sec to give the transceiver time 2675 * to establish link. 2676 */ 2677 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET); 2678 2679 } 2680 2681 2682 2683 2684 static void tlan_phy_finish_auto_neg(struct net_device *dev) 2685 { 2686 struct tlan_priv *priv = netdev_priv(dev); 2687 u16 an_adv; 2688 u16 an_lpa; 2689 u16 mode; 2690 u16 phy; 2691 u16 status; 2692 2693 phy = priv->phy[priv->phy_num]; 2694 2695 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2696 udelay(1000); 2697 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2698 2699 if (!(status & MII_GS_AUTOCMPLT)) { 2700 /* Wait for 8 sec to give the process 2701 * more time. Perhaps we should fail after a while. 2702 */ 2703 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN); 2704 return; 2705 } 2706 2707 netdev_info(dev, "Autonegotiation complete\n"); 2708 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv); 2709 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa); 2710 mode = an_adv & an_lpa & 0x03E0; 2711 if (mode & 0x0100) 2712 priv->tlan_full_duplex = true; 2713 else if (!(mode & 0x0080) && (mode & 0x0040)) 2714 priv->tlan_full_duplex = true; 2715 2716 /* switch to internal PHY for 10 Mbps */ 2717 if ((!(mode & 0x0180)) && 2718 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) && 2719 (priv->phy_num != 0)) { 2720 priv->phy_num = 0; 2721 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN); 2722 return; 2723 } 2724 2725 if (priv->phy_num == 0) { 2726 if ((priv->duplex == TLAN_DUPLEX_FULL) || 2727 (an_adv & an_lpa & 0x0040)) { 2728 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2729 MII_GC_AUTOENB | MII_GC_DUPLEX); 2730 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n"); 2731 } else { 2732 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2733 MII_GC_AUTOENB); 2734 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n"); 2735 } 2736 } 2737 2738 /* Wait for 100 ms. No reason in partiticular. 2739 */ 2740 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET); 2741 2742 } 2743 2744 2745 /********************************************************************* 2746 * 2747 * tlan_phy_monitor 2748 * 2749 * Returns: 2750 * None 2751 * 2752 * Params: 2753 * data The device structure of this device. 2754 * 2755 * 2756 * This function monitors PHY condition by reading the status 2757 * register via the MII bus, controls LINK LED and notifies the 2758 * kernel about link state. 2759 * 2760 *******************************************************************/ 2761 2762 static void tlan_phy_monitor(struct timer_list *t) 2763 { 2764 struct tlan_priv *priv = from_timer(priv, t, media_timer); 2765 struct net_device *dev = priv->dev; 2766 u16 phy; 2767 u16 phy_status; 2768 2769 phy = priv->phy[priv->phy_num]; 2770 2771 /* Get PHY status register */ 2772 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status); 2773 2774 /* Check if link has been lost */ 2775 if (!(phy_status & MII_GS_LINK)) { 2776 if (netif_carrier_ok(dev)) { 2777 printk(KERN_DEBUG "TLAN: %s has lost link\n", 2778 dev->name); 2779 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0); 2780 netif_carrier_off(dev); 2781 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) { 2782 /* power down internal PHY */ 2783 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK | 2784 MII_GC_ISOLATE; 2785 2786 tlan_mii_sync(dev->base_addr); 2787 tlan_mii_write_reg(dev, priv->phy[0], 2788 MII_GEN_CTL, data); 2789 /* set to external PHY */ 2790 priv->phy_num = 1; 2791 /* restart autonegotiation */ 2792 tlan_set_timer(dev, msecs_to_jiffies(400), 2793 TLAN_TIMER_PHY_PDOWN); 2794 return; 2795 } 2796 } 2797 } 2798 2799 /* Link restablished? */ 2800 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) { 2801 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); 2802 printk(KERN_DEBUG "TLAN: %s has reestablished link\n", 2803 dev->name); 2804 netif_carrier_on(dev); 2805 } 2806 priv->media_timer.expires = jiffies + HZ; 2807 add_timer(&priv->media_timer); 2808 } 2809 2810 2811 /***************************************************************************** 2812 ****************************************************************************** 2813 2814 ThunderLAN driver MII routines 2815 2816 these routines are based on the information in chap. 2 of the 2817 "ThunderLAN Programmer's Guide", pp. 15-24. 2818 2819 ****************************************************************************** 2820 *****************************************************************************/ 2821 2822 2823 /*************************************************************** 2824 * tlan_mii_read_reg 2825 * 2826 * Returns: 2827 * false if ack received ok 2828 * true if no ack received or other error 2829 * 2830 * Parms: 2831 * dev The device structure containing 2832 * The io address and interrupt count 2833 * for this device. 2834 * phy The address of the PHY to be queried. 2835 * reg The register whose contents are to be 2836 * retrieved. 2837 * val A pointer to a variable to store the 2838 * retrieved value. 2839 * 2840 * This function uses the TLAN's MII bus to retrieve the contents 2841 * of a given register on a PHY. It sends the appropriate info 2842 * and then reads the 16-bit register value from the MII bus via 2843 * the TLAN SIO register. 2844 * 2845 **************************************************************/ 2846 2847 static bool 2848 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val) 2849 { 2850 u8 nack; 2851 u16 sio, tmp; 2852 u32 i; 2853 bool err; 2854 int minten; 2855 struct tlan_priv *priv = netdev_priv(dev); 2856 unsigned long flags = 0; 2857 2858 err = false; 2859 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2860 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2861 2862 if (!in_irq()) 2863 spin_lock_irqsave(&priv->lock, flags); 2864 2865 tlan_mii_sync(dev->base_addr); 2866 2867 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 2868 if (minten) 2869 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 2870 2871 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 2872 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */ 2873 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 2874 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 2875 2876 2877 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */ 2878 2879 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */ 2880 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2881 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */ 2882 2883 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */ 2884 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */ 2885 if (nack) { /* no ACK, so fake it */ 2886 for (i = 0; i < 16; i++) { 2887 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2888 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2889 } 2890 tmp = 0xffff; 2891 err = true; 2892 } else { /* ACK, so read data */ 2893 for (tmp = 0, i = 0x8000; i; i >>= 1) { 2894 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2895 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio)) 2896 tmp |= i; 2897 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2898 } 2899 } 2900 2901 2902 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 2903 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2904 2905 if (minten) 2906 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 2907 2908 *val = tmp; 2909 2910 if (!in_irq()) 2911 spin_unlock_irqrestore(&priv->lock, flags); 2912 2913 return err; 2914 2915 } 2916 2917 2918 2919 2920 /*************************************************************** 2921 * tlan_mii_send_data 2922 * 2923 * Returns: 2924 * Nothing 2925 * Parms: 2926 * base_port The base IO port of the adapter in 2927 * question. 2928 * dev The address of the PHY to be queried. 2929 * data The value to be placed on the MII bus. 2930 * num_bits The number of bits in data that are to 2931 * be placed on the MII bus. 2932 * 2933 * This function sends on sequence of bits on the MII 2934 * configuration bus. 2935 * 2936 **************************************************************/ 2937 2938 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits) 2939 { 2940 u16 sio; 2941 u32 i; 2942 2943 if (num_bits == 0) 2944 return; 2945 2946 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2947 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2948 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio); 2949 2950 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) { 2951 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2952 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2953 if (data & i) 2954 tlan_set_bit(TLAN_NET_SIO_MDATA, sio); 2955 else 2956 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio); 2957 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2958 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2959 } 2960 2961 } 2962 2963 2964 2965 2966 /*************************************************************** 2967 * TLan_MiiSync 2968 * 2969 * Returns: 2970 * Nothing 2971 * Parms: 2972 * base_port The base IO port of the adapter in 2973 * question. 2974 * 2975 * This functions syncs all PHYs in terms of the MII configuration 2976 * bus. 2977 * 2978 **************************************************************/ 2979 2980 static void tlan_mii_sync(u16 base_port) 2981 { 2982 int i; 2983 u16 sio; 2984 2985 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2986 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2987 2988 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); 2989 for (i = 0; i < 32; i++) { 2990 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2991 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2992 } 2993 2994 } 2995 2996 2997 2998 2999 /*************************************************************** 3000 * tlan_mii_write_reg 3001 * 3002 * Returns: 3003 * Nothing 3004 * Parms: 3005 * dev The device structure for the device 3006 * to write to. 3007 * phy The address of the PHY to be written to. 3008 * reg The register whose contents are to be 3009 * written. 3010 * val The value to be written to the register. 3011 * 3012 * This function uses the TLAN's MII bus to write the contents of a 3013 * given register on a PHY. It sends the appropriate info and then 3014 * writes the 16-bit register value from the MII configuration bus 3015 * via the TLAN SIO register. 3016 * 3017 **************************************************************/ 3018 3019 static void 3020 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val) 3021 { 3022 u16 sio; 3023 int minten; 3024 unsigned long flags = 0; 3025 struct tlan_priv *priv = netdev_priv(dev); 3026 3027 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 3028 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 3029 3030 if (!in_irq()) 3031 spin_lock_irqsave(&priv->lock, flags); 3032 3033 tlan_mii_sync(dev->base_addr); 3034 3035 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 3036 if (minten) 3037 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 3038 3039 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 3040 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */ 3041 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 3042 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 3043 3044 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */ 3045 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */ 3046 3047 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 3048 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 3049 3050 if (minten) 3051 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 3052 3053 if (!in_irq()) 3054 spin_unlock_irqrestore(&priv->lock, flags); 3055 3056 } 3057 3058 3059 3060 3061 /***************************************************************************** 3062 ****************************************************************************** 3063 3064 ThunderLAN driver eeprom routines 3065 3066 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A 3067 EEPROM. these functions are based on information in microchip's 3068 data sheet. I don't know how well this functions will work with 3069 other Eeproms. 3070 3071 ****************************************************************************** 3072 *****************************************************************************/ 3073 3074 3075 /*************************************************************** 3076 * tlan_ee_send_start 3077 * 3078 * Returns: 3079 * Nothing 3080 * Parms: 3081 * io_base The IO port base address for the 3082 * TLAN device with the EEPROM to 3083 * use. 3084 * 3085 * This function sends a start cycle to an EEPROM attached 3086 * to a TLAN chip. 3087 * 3088 **************************************************************/ 3089 3090 static void tlan_ee_send_start(u16 io_base) 3091 { 3092 u16 sio; 3093 3094 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3095 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3096 3097 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3098 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3099 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3100 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3101 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3102 3103 } 3104 3105 3106 3107 3108 /*************************************************************** 3109 * tlan_ee_send_byte 3110 * 3111 * Returns: 3112 * If the correct ack was received, 0, otherwise 1 3113 * Parms: io_base The IO port base address for the 3114 * TLAN device with the EEPROM to 3115 * use. 3116 * data The 8 bits of information to 3117 * send to the EEPROM. 3118 * stop If TLAN_EEPROM_STOP is passed, a 3119 * stop cycle is sent after the 3120 * byte is sent after the ack is 3121 * read. 3122 * 3123 * This function sends a byte on the serial EEPROM line, 3124 * driving the clock to send each bit. The function then 3125 * reverses transmission direction and reads an acknowledge 3126 * bit. 3127 * 3128 **************************************************************/ 3129 3130 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop) 3131 { 3132 int err; 3133 u8 place; 3134 u16 sio; 3135 3136 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3137 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3138 3139 /* Assume clock is low, tx is enabled; */ 3140 for (place = 0x80; place != 0; place >>= 1) { 3141 if (place & data) 3142 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3143 else 3144 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3145 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3146 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3147 } 3148 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3149 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3150 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio); 3151 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3152 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3153 3154 if ((!err) && stop) { 3155 /* STOP, raise data while clock is high */ 3156 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3157 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3158 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3159 } 3160 3161 return err; 3162 3163 } 3164 3165 3166 3167 3168 /*************************************************************** 3169 * tlan_ee_receive_byte 3170 * 3171 * Returns: 3172 * Nothing 3173 * Parms: 3174 * io_base The IO port base address for the 3175 * TLAN device with the EEPROM to 3176 * use. 3177 * data An address to a char to hold the 3178 * data sent from the EEPROM. 3179 * stop If TLAN_EEPROM_STOP is passed, a 3180 * stop cycle is sent after the 3181 * byte is received, and no ack is 3182 * sent. 3183 * 3184 * This function receives 8 bits of data from the EEPROM 3185 * over the serial link. It then sends and ack bit, or no 3186 * ack and a stop bit. This function is used to retrieve 3187 * data after the address of a byte in the EEPROM has been 3188 * sent. 3189 * 3190 **************************************************************/ 3191 3192 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop) 3193 { 3194 u8 place; 3195 u16 sio; 3196 3197 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3198 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3199 *data = 0; 3200 3201 /* Assume clock is low, tx is enabled; */ 3202 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3203 for (place = 0x80; place; place >>= 1) { 3204 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3205 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio)) 3206 *data |= place; 3207 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3208 } 3209 3210 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3211 if (!stop) { 3212 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */ 3213 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3214 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3215 } else { 3216 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */ 3217 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3218 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3219 /* STOP, raise data while clock is high */ 3220 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3221 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3222 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3223 } 3224 3225 } 3226 3227 3228 3229 3230 /*************************************************************** 3231 * tlan_ee_read_byte 3232 * 3233 * Returns: 3234 * No error = 0, else, the stage at which the error 3235 * occurred. 3236 * Parms: 3237 * io_base The IO port base address for the 3238 * TLAN device with the EEPROM to 3239 * use. 3240 * ee_addr The address of the byte in the 3241 * EEPROM whose contents are to be 3242 * retrieved. 3243 * data An address to a char to hold the 3244 * data obtained from the EEPROM. 3245 * 3246 * This function reads a byte of information from an byte 3247 * cell in the EEPROM. 3248 * 3249 **************************************************************/ 3250 3251 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data) 3252 { 3253 int err; 3254 struct tlan_priv *priv = netdev_priv(dev); 3255 unsigned long flags = 0; 3256 int ret = 0; 3257 3258 spin_lock_irqsave(&priv->lock, flags); 3259 3260 tlan_ee_send_start(dev->base_addr); 3261 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK); 3262 if (err) { 3263 ret = 1; 3264 goto fail; 3265 } 3266 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK); 3267 if (err) { 3268 ret = 2; 3269 goto fail; 3270 } 3271 tlan_ee_send_start(dev->base_addr); 3272 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK); 3273 if (err) { 3274 ret = 3; 3275 goto fail; 3276 } 3277 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP); 3278 fail: 3279 spin_unlock_irqrestore(&priv->lock, flags); 3280 3281 return ret; 3282 3283 } 3284 3285 3286 3287