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