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