1 /******************************************************************************* 2 * 3 * Linux ThunderLAN Driver 4 * 5 * tlan.c 6 * by James Banks 7 * 8 * (C) 1997-1998 Caldera, Inc. 9 * (C) 1998 James Banks 10 * (C) 1999-2001 Torben Mathiasen 11 * (C) 2002 Samuel Chessman 12 * 13 * This software may be used and distributed according to the terms 14 * of the GNU General Public License, incorporated herein by reference. 15 * 16 ** Useful (if not required) reading: 17 * 18 * Texas Instruments, ThunderLAN Programmer's Guide, 19 * TI Literature Number SPWU013A 20 * available in PDF format from www.ti.com 21 * Level One, LXT901 and LXT970 Data Sheets 22 * available in PDF format from www.level1.com 23 * National Semiconductor, DP83840A Data Sheet 24 * available in PDF format from www.national.com 25 * Microchip Technology, 24C01A/02A/04A Data Sheet 26 * available in PDF format from www.microchip.com 27 * 28 ******************************************************************************/ 29 30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 31 32 #include <linux/hardirq.h> 33 #include <linux/module.h> 34 #include <linux/init.h> 35 #include <linux/interrupt.h> 36 #include <linux/ioport.h> 37 #include <linux/eisa.h> 38 #include <linux/pci.h> 39 #include <linux/dma-mapping.h> 40 #include <linux/netdevice.h> 41 #include <linux/etherdevice.h> 42 #include <linux/delay.h> 43 #include <linux/spinlock.h> 44 #include <linux/workqueue.h> 45 #include <linux/mii.h> 46 47 #include "tlan.h" 48 49 50 /* For removing EISA devices */ 51 static struct net_device *tlan_eisa_devices; 52 53 static int tlan_devices_installed; 54 55 /* Set speed, duplex and aui settings */ 56 static int aui[MAX_TLAN_BOARDS]; 57 static int duplex[MAX_TLAN_BOARDS]; 58 static int speed[MAX_TLAN_BOARDS]; 59 static int boards_found; 60 module_param_array(aui, int, NULL, 0); 61 module_param_array(duplex, int, NULL, 0); 62 module_param_array(speed, int, NULL, 0); 63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)"); 64 MODULE_PARM_DESC(duplex, 65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)"); 66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)"); 67 68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>"); 69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters"); 70 MODULE_LICENSE("GPL"); 71 72 /* Turn on debugging. See Documentation/networking/tlan.txt for details */ 73 static int debug; 74 module_param(debug, int, 0); 75 MODULE_PARM_DESC(debug, "ThunderLAN debug mask"); 76 77 static const char tlan_signature[] = "TLAN"; 78 static const char tlan_banner[] = "ThunderLAN driver v1.17\n"; 79 static int tlan_have_pci; 80 static int tlan_have_eisa; 81 82 static const char * const media[] = { 83 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD", 84 "100BaseTx-FD", "100BaseT4", NULL 85 }; 86 87 static struct board { 88 const char *device_label; 89 u32 flags; 90 u16 addr_ofs; 91 } board_info[] = { 92 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 93 { "Compaq Netelligent 10/100 TX PCI UTP", 94 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 95 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, 96 { "Compaq NetFlex-3/P", 97 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, 98 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, 99 { "Compaq Netelligent Integrated 10/100 TX UTP", 100 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 101 { "Compaq Netelligent Dual 10/100 TX PCI UTP", 102 TLAN_ADAPTER_NONE, 0x83 }, 103 { "Compaq Netelligent 10/100 TX Embedded UTP", 104 TLAN_ADAPTER_NONE, 0x83 }, 105 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 }, 106 { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED | 107 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 }, 108 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED | 109 TLAN_ADAPTER_USE_INTERN_10, 0xf8 }, 110 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 111 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 }, 112 { "Compaq NetFlex-3/E", 113 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */ 114 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, 115 { "Compaq NetFlex-3/E", 116 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */ 117 }; 118 119 static const struct pci_device_id tlan_pci_tbl[] = { 120 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10, 121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100, 123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, 124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I, 125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, 126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER, 127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 }, 128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B, 129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, 130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI, 131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, 132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D, 133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 }, 134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I, 135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 }, 136 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183, 137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 }, 138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325, 139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 }, 140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326, 141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 }, 142 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100, 143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 }, 144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2, 145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 }, 146 { 0,} 147 }; 148 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl); 149 150 static void tlan_eisa_probe(void); 151 static void tlan_eisa_cleanup(void); 152 static int tlan_init(struct net_device *); 153 static int tlan_open(struct net_device *dev); 154 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *); 155 static irqreturn_t tlan_handle_interrupt(int, void *); 156 static int tlan_close(struct net_device *); 157 static struct net_device_stats *tlan_get_stats(struct net_device *); 158 static void tlan_set_multicast_list(struct net_device *); 159 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 160 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, 161 int irq, int rev, const struct pci_device_id *ent); 162 static void tlan_tx_timeout(struct net_device *dev); 163 static void tlan_tx_timeout_work(struct work_struct *work); 164 static int tlan_init_one(struct pci_dev *pdev, 165 const struct pci_device_id *ent); 166 167 static u32 tlan_handle_tx_eof(struct net_device *, u16); 168 static u32 tlan_handle_stat_overflow(struct net_device *, u16); 169 static u32 tlan_handle_rx_eof(struct net_device *, u16); 170 static u32 tlan_handle_dummy(struct net_device *, u16); 171 static u32 tlan_handle_tx_eoc(struct net_device *, u16); 172 static u32 tlan_handle_status_check(struct net_device *, u16); 173 static u32 tlan_handle_rx_eoc(struct net_device *, u16); 174 175 static void tlan_timer(unsigned long); 176 177 static void tlan_reset_lists(struct net_device *); 178 static void tlan_free_lists(struct net_device *); 179 static void tlan_print_dio(u16); 180 static void tlan_print_list(struct tlan_list *, char *, int); 181 static void tlan_read_and_clear_stats(struct net_device *, int); 182 static void tlan_reset_adapter(struct net_device *); 183 static void tlan_finish_reset(struct net_device *); 184 static void tlan_set_mac(struct net_device *, int areg, char *mac); 185 186 static void tlan_phy_print(struct net_device *); 187 static void tlan_phy_detect(struct net_device *); 188 static void tlan_phy_power_down(struct net_device *); 189 static void tlan_phy_power_up(struct net_device *); 190 static void tlan_phy_reset(struct net_device *); 191 static void tlan_phy_start_link(struct net_device *); 192 static void tlan_phy_finish_auto_neg(struct net_device *); 193 static void tlan_phy_monitor(unsigned long); 194 195 /* 196 static int tlan_phy_nop(struct net_device *); 197 static int tlan_phy_internal_check(struct net_device *); 198 static int tlan_phy_internal_service(struct net_device *); 199 static int tlan_phy_dp83840a_check(struct net_device *); 200 */ 201 202 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *); 203 static void tlan_mii_send_data(u16, u32, unsigned); 204 static void tlan_mii_sync(u16); 205 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16); 206 207 static void tlan_ee_send_start(u16); 208 static int tlan_ee_send_byte(u16, u8, int); 209 static void tlan_ee_receive_byte(u16, u8 *, int); 210 static int tlan_ee_read_byte(struct net_device *, u8, u8 *); 211 212 213 static inline void 214 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb) 215 { 216 unsigned long addr = (unsigned long)skb; 217 tag->buffer[9].address = addr; 218 tag->buffer[8].address = upper_32_bits(addr); 219 } 220 221 static inline struct sk_buff * 222 tlan_get_skb(const struct tlan_list *tag) 223 { 224 unsigned long addr; 225 226 addr = tag->buffer[9].address; 227 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16; 228 return (struct sk_buff *) addr; 229 } 230 231 static u32 232 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = { 233 NULL, 234 tlan_handle_tx_eof, 235 tlan_handle_stat_overflow, 236 tlan_handle_rx_eof, 237 tlan_handle_dummy, 238 tlan_handle_tx_eoc, 239 tlan_handle_status_check, 240 tlan_handle_rx_eoc 241 }; 242 243 static inline void 244 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type) 245 { 246 struct tlan_priv *priv = netdev_priv(dev); 247 unsigned long flags = 0; 248 249 if (!in_irq()) 250 spin_lock_irqsave(&priv->lock, flags); 251 if (priv->timer.function != NULL && 252 priv->timer_type != TLAN_TIMER_ACTIVITY) { 253 if (!in_irq()) 254 spin_unlock_irqrestore(&priv->lock, flags); 255 return; 256 } 257 priv->timer.function = tlan_timer; 258 if (!in_irq()) 259 spin_unlock_irqrestore(&priv->lock, flags); 260 261 priv->timer.data = (unsigned long) dev; 262 priv->timer_set_at = jiffies; 263 priv->timer_type = type; 264 mod_timer(&priv->timer, jiffies + ticks); 265 266 } 267 268 269 /***************************************************************************** 270 ****************************************************************************** 271 272 ThunderLAN driver primary functions 273 274 these functions are more or less common to all linux network drivers. 275 276 ****************************************************************************** 277 *****************************************************************************/ 278 279 280 281 282 283 /*************************************************************** 284 * tlan_remove_one 285 * 286 * Returns: 287 * Nothing 288 * Parms: 289 * None 290 * 291 * Goes through the TLanDevices list and frees the device 292 * structs and memory associated with each device (lists 293 * and buffers). It also ureserves the IO port regions 294 * associated with this device. 295 * 296 **************************************************************/ 297 298 299 static void tlan_remove_one(struct pci_dev *pdev) 300 { 301 struct net_device *dev = pci_get_drvdata(pdev); 302 struct tlan_priv *priv = netdev_priv(dev); 303 304 unregister_netdev(dev); 305 306 if (priv->dma_storage) { 307 pci_free_consistent(priv->pci_dev, 308 priv->dma_size, priv->dma_storage, 309 priv->dma_storage_dma); 310 } 311 312 #ifdef CONFIG_PCI 313 pci_release_regions(pdev); 314 #endif 315 316 free_netdev(dev); 317 318 cancel_work_sync(&priv->tlan_tqueue); 319 } 320 321 static void tlan_start(struct net_device *dev) 322 { 323 tlan_reset_lists(dev); 324 /* NOTE: It might not be necessary to read the stats before a 325 reset if you don't care what the values are. 326 */ 327 tlan_read_and_clear_stats(dev, TLAN_IGNORE); 328 tlan_reset_adapter(dev); 329 netif_wake_queue(dev); 330 } 331 332 static void tlan_stop(struct net_device *dev) 333 { 334 struct tlan_priv *priv = netdev_priv(dev); 335 336 del_timer_sync(&priv->media_timer); 337 tlan_read_and_clear_stats(dev, TLAN_RECORD); 338 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD); 339 /* Reset and power down phy */ 340 tlan_reset_adapter(dev); 341 if (priv->timer.function != NULL) { 342 del_timer_sync(&priv->timer); 343 priv->timer.function = NULL; 344 } 345 } 346 347 #ifdef CONFIG_PM 348 349 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state) 350 { 351 struct net_device *dev = pci_get_drvdata(pdev); 352 353 if (netif_running(dev)) 354 tlan_stop(dev); 355 356 netif_device_detach(dev); 357 pci_save_state(pdev); 358 pci_disable_device(pdev); 359 pci_wake_from_d3(pdev, false); 360 pci_set_power_state(pdev, PCI_D3hot); 361 362 return 0; 363 } 364 365 static int tlan_resume(struct pci_dev *pdev) 366 { 367 struct net_device *dev = pci_get_drvdata(pdev); 368 int rc = pci_enable_device(pdev); 369 370 if (rc) 371 return rc; 372 pci_restore_state(pdev); 373 pci_enable_wake(pdev, PCI_D0, 0); 374 netif_device_attach(dev); 375 376 if (netif_running(dev)) 377 tlan_start(dev); 378 379 return 0; 380 } 381 382 #else /* CONFIG_PM */ 383 384 #define tlan_suspend NULL 385 #define tlan_resume NULL 386 387 #endif /* CONFIG_PM */ 388 389 390 static struct pci_driver tlan_driver = { 391 .name = "tlan", 392 .id_table = tlan_pci_tbl, 393 .probe = tlan_init_one, 394 .remove = tlan_remove_one, 395 .suspend = tlan_suspend, 396 .resume = tlan_resume, 397 }; 398 399 static int __init tlan_probe(void) 400 { 401 int rc = -ENODEV; 402 403 pr_info("%s", tlan_banner); 404 405 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n"); 406 407 /* Use new style PCI probing. Now the kernel will 408 do most of this for us */ 409 rc = pci_register_driver(&tlan_driver); 410 411 if (rc != 0) { 412 pr_err("Could not register pci driver\n"); 413 goto err_out_pci_free; 414 } 415 416 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n"); 417 tlan_eisa_probe(); 418 419 pr_info("%d device%s installed, PCI: %d EISA: %d\n", 420 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s", 421 tlan_have_pci, tlan_have_eisa); 422 423 if (tlan_devices_installed == 0) { 424 rc = -ENODEV; 425 goto err_out_pci_unreg; 426 } 427 return 0; 428 429 err_out_pci_unreg: 430 pci_unregister_driver(&tlan_driver); 431 err_out_pci_free: 432 return rc; 433 } 434 435 436 static int tlan_init_one(struct pci_dev *pdev, 437 const struct pci_device_id *ent) 438 { 439 return tlan_probe1(pdev, -1, -1, 0, ent); 440 } 441 442 443 /* 444 *************************************************************** 445 * tlan_probe1 446 * 447 * Returns: 448 * 0 on success, error code on error 449 * Parms: 450 * none 451 * 452 * The name is lower case to fit in with all the rest of 453 * the netcard_probe names. This function looks for 454 * another TLan based adapter, setting it up with the 455 * allocated device struct if one is found. 456 * tlan_probe has been ported to the new net API and 457 * now allocates its own device structure. This function 458 * is also used by modules. 459 * 460 **************************************************************/ 461 462 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev, 463 const struct pci_device_id *ent) 464 { 465 466 struct net_device *dev; 467 struct tlan_priv *priv; 468 u16 device_id; 469 int reg, rc = -ENODEV; 470 471 #ifdef CONFIG_PCI 472 if (pdev) { 473 rc = pci_enable_device(pdev); 474 if (rc) 475 return rc; 476 477 rc = pci_request_regions(pdev, tlan_signature); 478 if (rc) { 479 pr_err("Could not reserve IO regions\n"); 480 goto err_out; 481 } 482 } 483 #endif /* CONFIG_PCI */ 484 485 dev = alloc_etherdev(sizeof(struct tlan_priv)); 486 if (dev == NULL) { 487 rc = -ENOMEM; 488 goto err_out_regions; 489 } 490 SET_NETDEV_DEV(dev, &pdev->dev); 491 492 priv = netdev_priv(dev); 493 494 priv->pci_dev = pdev; 495 priv->dev = dev; 496 497 /* Is this a PCI device? */ 498 if (pdev) { 499 u32 pci_io_base = 0; 500 501 priv->adapter = &board_info[ent->driver_data]; 502 503 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 504 if (rc) { 505 pr_err("No suitable PCI mapping available\n"); 506 goto err_out_free_dev; 507 } 508 509 for (reg = 0; reg <= 5; reg++) { 510 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) { 511 pci_io_base = pci_resource_start(pdev, reg); 512 TLAN_DBG(TLAN_DEBUG_GNRL, 513 "IO mapping is available at %x.\n", 514 pci_io_base); 515 break; 516 } 517 } 518 if (!pci_io_base) { 519 pr_err("No IO mappings available\n"); 520 rc = -EIO; 521 goto err_out_free_dev; 522 } 523 524 dev->base_addr = pci_io_base; 525 dev->irq = pdev->irq; 526 priv->adapter_rev = pdev->revision; 527 pci_set_master(pdev); 528 pci_set_drvdata(pdev, dev); 529 530 } else { /* EISA card */ 531 /* This is a hack. We need to know which board structure 532 * is suited for this adapter */ 533 device_id = inw(ioaddr + EISA_ID2); 534 if (device_id == 0x20F1) { 535 priv->adapter = &board_info[13]; /* NetFlex-3/E */ 536 priv->adapter_rev = 23; /* TLAN 2.3 */ 537 } else { 538 priv->adapter = &board_info[14]; 539 priv->adapter_rev = 10; /* TLAN 1.0 */ 540 } 541 dev->base_addr = ioaddr; 542 dev->irq = irq; 543 } 544 545 /* Kernel parameters */ 546 if (dev->mem_start) { 547 priv->aui = dev->mem_start & 0x01; 548 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0 549 : (dev->mem_start & 0x06) >> 1; 550 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0 551 : (dev->mem_start & 0x18) >> 3; 552 553 if (priv->speed == 0x1) 554 priv->speed = TLAN_SPEED_10; 555 else if (priv->speed == 0x2) 556 priv->speed = TLAN_SPEED_100; 557 558 debug = priv->debug = dev->mem_end; 559 } else { 560 priv->aui = aui[boards_found]; 561 priv->speed = speed[boards_found]; 562 priv->duplex = duplex[boards_found]; 563 priv->debug = debug; 564 } 565 566 /* This will be used when we get an adapter error from 567 * within our irq handler */ 568 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work); 569 570 spin_lock_init(&priv->lock); 571 572 rc = tlan_init(dev); 573 if (rc) { 574 pr_err("Could not set up device\n"); 575 goto err_out_free_dev; 576 } 577 578 rc = register_netdev(dev); 579 if (rc) { 580 pr_err("Could not register device\n"); 581 goto err_out_uninit; 582 } 583 584 585 tlan_devices_installed++; 586 boards_found++; 587 588 /* pdev is NULL if this is an EISA device */ 589 if (pdev) 590 tlan_have_pci++; 591 else { 592 priv->next_device = tlan_eisa_devices; 593 tlan_eisa_devices = dev; 594 tlan_have_eisa++; 595 } 596 597 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n", 598 (int)dev->irq, 599 (int)dev->base_addr, 600 priv->adapter->device_label, 601 priv->adapter_rev); 602 return 0; 603 604 err_out_uninit: 605 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage, 606 priv->dma_storage_dma); 607 err_out_free_dev: 608 free_netdev(dev); 609 err_out_regions: 610 #ifdef CONFIG_PCI 611 if (pdev) 612 pci_release_regions(pdev); 613 #endif 614 err_out: 615 if (pdev) 616 pci_disable_device(pdev); 617 return rc; 618 } 619 620 621 static void tlan_eisa_cleanup(void) 622 { 623 struct net_device *dev; 624 struct tlan_priv *priv; 625 626 while (tlan_have_eisa) { 627 dev = tlan_eisa_devices; 628 priv = netdev_priv(dev); 629 if (priv->dma_storage) { 630 pci_free_consistent(priv->pci_dev, priv->dma_size, 631 priv->dma_storage, 632 priv->dma_storage_dma); 633 } 634 release_region(dev->base_addr, 0x10); 635 unregister_netdev(dev); 636 tlan_eisa_devices = priv->next_device; 637 free_netdev(dev); 638 tlan_have_eisa--; 639 } 640 } 641 642 643 static void __exit tlan_exit(void) 644 { 645 pci_unregister_driver(&tlan_driver); 646 647 if (tlan_have_eisa) 648 tlan_eisa_cleanup(); 649 650 } 651 652 653 /* Module loading/unloading */ 654 module_init(tlan_probe); 655 module_exit(tlan_exit); 656 657 658 659 /************************************************************** 660 * tlan_eisa_probe 661 * 662 * Returns: 0 on success, 1 otherwise 663 * 664 * Parms: None 665 * 666 * 667 * This functions probes for EISA devices and calls 668 * TLan_probe1 when one is found. 669 * 670 *************************************************************/ 671 672 static void __init tlan_eisa_probe(void) 673 { 674 long ioaddr; 675 int rc = -ENODEV; 676 int irq; 677 u16 device_id; 678 679 if (!EISA_bus) { 680 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n"); 681 return; 682 } 683 684 /* Loop through all slots of the EISA bus */ 685 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) { 686 687 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n", 688 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID)); 689 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n", 690 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2)); 691 692 693 TLAN_DBG(TLAN_DEBUG_PROBE, 694 "Probing for EISA adapter at IO: 0x%4x : ", 695 (int) ioaddr); 696 if (request_region(ioaddr, 0x10, tlan_signature) == NULL) 697 goto out; 698 699 if (inw(ioaddr + EISA_ID) != 0x110E) { 700 release_region(ioaddr, 0x10); 701 goto out; 702 } 703 704 device_id = inw(ioaddr + EISA_ID2); 705 if (device_id != 0x20F1 && device_id != 0x40F1) { 706 release_region(ioaddr, 0x10); 707 goto out; 708 } 709 710 /* check if adapter is enabled */ 711 if (inb(ioaddr + EISA_CR) != 0x1) { 712 release_region(ioaddr, 0x10); 713 goto out2; 714 } 715 716 if (debug == 0x10) 717 pr_info("Found one\n"); 718 719 720 /* Get irq from board */ 721 switch (inb(ioaddr + 0xcc0)) { 722 case(0x10): 723 irq = 5; 724 break; 725 case(0x20): 726 irq = 9; 727 break; 728 case(0x40): 729 irq = 10; 730 break; 731 case(0x80): 732 irq = 11; 733 break; 734 default: 735 goto out; 736 } 737 738 739 /* Setup the newly found eisa adapter */ 740 rc = tlan_probe1(NULL, ioaddr, irq, 741 12, NULL); 742 continue; 743 744 out: 745 if (debug == 0x10) 746 pr_info("None found\n"); 747 continue; 748 749 out2: 750 if (debug == 0x10) 751 pr_info("Card found but it is not enabled, skipping\n"); 752 continue; 753 754 } 755 756 } 757 758 #ifdef CONFIG_NET_POLL_CONTROLLER 759 static void tlan_poll(struct net_device *dev) 760 { 761 disable_irq(dev->irq); 762 tlan_handle_interrupt(dev->irq, dev); 763 enable_irq(dev->irq); 764 } 765 #endif 766 767 static const struct net_device_ops tlan_netdev_ops = { 768 .ndo_open = tlan_open, 769 .ndo_stop = tlan_close, 770 .ndo_start_xmit = tlan_start_tx, 771 .ndo_tx_timeout = tlan_tx_timeout, 772 .ndo_get_stats = tlan_get_stats, 773 .ndo_set_rx_mode = tlan_set_multicast_list, 774 .ndo_do_ioctl = tlan_ioctl, 775 .ndo_change_mtu = eth_change_mtu, 776 .ndo_set_mac_address = eth_mac_addr, 777 .ndo_validate_addr = eth_validate_addr, 778 #ifdef CONFIG_NET_POLL_CONTROLLER 779 .ndo_poll_controller = tlan_poll, 780 #endif 781 }; 782 783 static void tlan_get_drvinfo(struct net_device *dev, 784 struct ethtool_drvinfo *info) 785 { 786 struct tlan_priv *priv = netdev_priv(dev); 787 788 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 789 if (priv->pci_dev) 790 strlcpy(info->bus_info, pci_name(priv->pci_dev), 791 sizeof(info->bus_info)); 792 else 793 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info)); 794 info->eedump_len = TLAN_EEPROM_SIZE; 795 } 796 797 static int tlan_get_eeprom_len(struct net_device *dev) 798 { 799 return TLAN_EEPROM_SIZE; 800 } 801 802 static int tlan_get_eeprom(struct net_device *dev, 803 struct ethtool_eeprom *eeprom, u8 *data) 804 { 805 int i; 806 807 for (i = 0; i < TLAN_EEPROM_SIZE; i++) 808 if (tlan_ee_read_byte(dev, i, &data[i])) 809 return -EIO; 810 811 return 0; 812 } 813 814 static const struct ethtool_ops tlan_ethtool_ops = { 815 .get_drvinfo = tlan_get_drvinfo, 816 .get_link = ethtool_op_get_link, 817 .get_eeprom_len = tlan_get_eeprom_len, 818 .get_eeprom = tlan_get_eeprom, 819 }; 820 821 /*************************************************************** 822 * tlan_init 823 * 824 * Returns: 825 * 0 on success, error code otherwise. 826 * Parms: 827 * dev The structure of the device to be 828 * init'ed. 829 * 830 * This function completes the initialization of the 831 * device structure and driver. It reserves the IO 832 * addresses, allocates memory for the lists and bounce 833 * buffers, retrieves the MAC address from the eeprom 834 * and assignes the device's methods. 835 * 836 **************************************************************/ 837 838 static int tlan_init(struct net_device *dev) 839 { 840 int dma_size; 841 int err; 842 int i; 843 struct tlan_priv *priv; 844 845 priv = netdev_priv(dev); 846 847 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS) 848 * (sizeof(struct tlan_list)); 849 priv->dma_storage = pci_alloc_consistent(priv->pci_dev, 850 dma_size, 851 &priv->dma_storage_dma); 852 priv->dma_size = dma_size; 853 854 if (priv->dma_storage == NULL) { 855 pr_err("Could not allocate lists and buffers for %s\n", 856 dev->name); 857 return -ENOMEM; 858 } 859 memset(priv->dma_storage, 0, dma_size); 860 priv->rx_list = (struct tlan_list *) 861 ALIGN((unsigned long)priv->dma_storage, 8); 862 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8); 863 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS; 864 priv->tx_list_dma = 865 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS; 866 867 err = 0; 868 for (i = 0; i < ETH_ALEN; i++) 869 err |= tlan_ee_read_byte(dev, 870 (u8) priv->adapter->addr_ofs + i, 871 (u8 *) &dev->dev_addr[i]); 872 if (err) { 873 pr_err("%s: Error reading MAC from eeprom: %d\n", 874 dev->name, err); 875 } 876 /* Olicom OC-2325/OC-2326 have the address byte-swapped */ 877 if (priv->adapter->addr_ofs == 0xf8) { 878 for (i = 0; i < ETH_ALEN; i += 2) { 879 char tmp = dev->dev_addr[i]; 880 dev->dev_addr[i] = dev->dev_addr[i + 1]; 881 dev->dev_addr[i + 1] = tmp; 882 } 883 } 884 885 netif_carrier_off(dev); 886 887 /* Device methods */ 888 dev->netdev_ops = &tlan_netdev_ops; 889 dev->ethtool_ops = &tlan_ethtool_ops; 890 dev->watchdog_timeo = TX_TIMEOUT; 891 892 return 0; 893 894 } 895 896 897 898 899 /*************************************************************** 900 * tlan_open 901 * 902 * Returns: 903 * 0 on success, error code otherwise. 904 * Parms: 905 * dev Structure of device to be opened. 906 * 907 * This routine puts the driver and TLAN adapter in a 908 * state where it is ready to send and receive packets. 909 * It allocates the IRQ, resets and brings the adapter 910 * out of reset, and allows interrupts. It also delays 911 * the startup for autonegotiation or sends a Rx GO 912 * command to the adapter, as appropriate. 913 * 914 **************************************************************/ 915 916 static int tlan_open(struct net_device *dev) 917 { 918 struct tlan_priv *priv = netdev_priv(dev); 919 int err; 920 921 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION); 922 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED, 923 dev->name, dev); 924 925 if (err) { 926 netdev_err(dev, "Cannot open because IRQ %d is already in use\n", 927 dev->irq); 928 return err; 929 } 930 931 init_timer(&priv->timer); 932 init_timer(&priv->media_timer); 933 934 tlan_start(dev); 935 936 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n", 937 dev->name, priv->tlan_rev); 938 939 return 0; 940 941 } 942 943 944 945 /************************************************************** 946 * tlan_ioctl 947 * 948 * Returns: 949 * 0 on success, error code otherwise 950 * Params: 951 * dev structure of device to receive ioctl. 952 * 953 * rq ifreq structure to hold userspace data. 954 * 955 * cmd ioctl command. 956 * 957 * 958 *************************************************************/ 959 960 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 961 { 962 struct tlan_priv *priv = netdev_priv(dev); 963 struct mii_ioctl_data *data = if_mii(rq); 964 u32 phy = priv->phy[priv->phy_num]; 965 966 if (!priv->phy_online) 967 return -EAGAIN; 968 969 switch (cmd) { 970 case SIOCGMIIPHY: /* get address of MII PHY in use. */ 971 data->phy_id = phy; 972 973 974 case SIOCGMIIREG: /* read MII PHY register. */ 975 tlan_mii_read_reg(dev, data->phy_id & 0x1f, 976 data->reg_num & 0x1f, &data->val_out); 977 return 0; 978 979 980 case SIOCSMIIREG: /* write MII PHY register. */ 981 tlan_mii_write_reg(dev, data->phy_id & 0x1f, 982 data->reg_num & 0x1f, data->val_in); 983 return 0; 984 default: 985 return -EOPNOTSUPP; 986 } 987 } 988 989 990 /*************************************************************** 991 * tlan_tx_timeout 992 * 993 * Returns: nothing 994 * 995 * Params: 996 * dev structure of device which timed out 997 * during transmit. 998 * 999 **************************************************************/ 1000 1001 static void tlan_tx_timeout(struct net_device *dev) 1002 { 1003 1004 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name); 1005 1006 /* Ok so we timed out, lets see what we can do about it...*/ 1007 tlan_free_lists(dev); 1008 tlan_reset_lists(dev); 1009 tlan_read_and_clear_stats(dev, TLAN_IGNORE); 1010 tlan_reset_adapter(dev); 1011 dev->trans_start = jiffies; /* prevent tx timeout */ 1012 netif_wake_queue(dev); 1013 1014 } 1015 1016 1017 /*************************************************************** 1018 * tlan_tx_timeout_work 1019 * 1020 * Returns: nothing 1021 * 1022 * Params: 1023 * work work item of device which timed out 1024 * 1025 **************************************************************/ 1026 1027 static void tlan_tx_timeout_work(struct work_struct *work) 1028 { 1029 struct tlan_priv *priv = 1030 container_of(work, struct tlan_priv, tlan_tqueue); 1031 1032 tlan_tx_timeout(priv->dev); 1033 } 1034 1035 1036 1037 /*************************************************************** 1038 * tlan_start_tx 1039 * 1040 * Returns: 1041 * 0 on success, non-zero on failure. 1042 * Parms: 1043 * skb A pointer to the sk_buff containing the 1044 * frame to be sent. 1045 * dev The device to send the data on. 1046 * 1047 * This function adds a frame to the Tx list to be sent 1048 * ASAP. First it verifies that the adapter is ready and 1049 * there is room in the queue. Then it sets up the next 1050 * available list, copies the frame to the corresponding 1051 * buffer. If the adapter Tx channel is idle, it gives 1052 * the adapter a Tx Go command on the list, otherwise it 1053 * sets the forward address of the previous list to point 1054 * to this one. Then it frees the sk_buff. 1055 * 1056 **************************************************************/ 1057 1058 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev) 1059 { 1060 struct tlan_priv *priv = netdev_priv(dev); 1061 dma_addr_t tail_list_phys; 1062 struct tlan_list *tail_list; 1063 unsigned long flags; 1064 unsigned int txlen; 1065 1066 if (!priv->phy_online) { 1067 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n", 1068 dev->name); 1069 dev_kfree_skb_any(skb); 1070 return NETDEV_TX_OK; 1071 } 1072 1073 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE)) 1074 return NETDEV_TX_OK; 1075 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE); 1076 1077 tail_list = priv->tx_list + priv->tx_tail; 1078 tail_list_phys = 1079 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail; 1080 1081 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) { 1082 TLAN_DBG(TLAN_DEBUG_TX, 1083 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n", 1084 dev->name, priv->tx_head, priv->tx_tail); 1085 netif_stop_queue(dev); 1086 priv->tx_busy_count++; 1087 return NETDEV_TX_BUSY; 1088 } 1089 1090 tail_list->forward = 0; 1091 1092 tail_list->buffer[0].address = pci_map_single(priv->pci_dev, 1093 skb->data, txlen, 1094 PCI_DMA_TODEVICE); 1095 tlan_store_skb(tail_list, skb); 1096 1097 tail_list->frame_size = (u16) txlen; 1098 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen; 1099 tail_list->buffer[1].count = 0; 1100 tail_list->buffer[1].address = 0; 1101 1102 spin_lock_irqsave(&priv->lock, flags); 1103 tail_list->c_stat = TLAN_CSTAT_READY; 1104 if (!priv->tx_in_progress) { 1105 priv->tx_in_progress = 1; 1106 TLAN_DBG(TLAN_DEBUG_TX, 1107 "TRANSMIT: Starting TX on buffer %d\n", 1108 priv->tx_tail); 1109 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM); 1110 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD); 1111 } else { 1112 TLAN_DBG(TLAN_DEBUG_TX, 1113 "TRANSMIT: Adding buffer %d to TX channel\n", 1114 priv->tx_tail); 1115 if (priv->tx_tail == 0) { 1116 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward 1117 = tail_list_phys; 1118 } else { 1119 (priv->tx_list + (priv->tx_tail - 1))->forward 1120 = tail_list_phys; 1121 } 1122 } 1123 spin_unlock_irqrestore(&priv->lock, flags); 1124 1125 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS); 1126 1127 return NETDEV_TX_OK; 1128 1129 } 1130 1131 1132 1133 1134 /*************************************************************** 1135 * tlan_handle_interrupt 1136 * 1137 * Returns: 1138 * Nothing 1139 * Parms: 1140 * irq The line on which the interrupt 1141 * occurred. 1142 * dev_id A pointer to the device assigned to 1143 * this irq line. 1144 * 1145 * This function handles an interrupt generated by its 1146 * assigned TLAN adapter. The function deactivates 1147 * interrupts on its adapter, records the type of 1148 * interrupt, executes the appropriate subhandler, and 1149 * acknowdges the interrupt to the adapter (thus 1150 * re-enabling adapter interrupts. 1151 * 1152 **************************************************************/ 1153 1154 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id) 1155 { 1156 struct net_device *dev = dev_id; 1157 struct tlan_priv *priv = netdev_priv(dev); 1158 u16 host_int; 1159 u16 type; 1160 1161 spin_lock(&priv->lock); 1162 1163 host_int = inw(dev->base_addr + TLAN_HOST_INT); 1164 type = (host_int & TLAN_HI_IT_MASK) >> 2; 1165 if (type) { 1166 u32 ack; 1167 u32 host_cmd; 1168 1169 outw(host_int, dev->base_addr + TLAN_HOST_INT); 1170 ack = tlan_int_vector[type](dev, host_int); 1171 1172 if (ack) { 1173 host_cmd = TLAN_HC_ACK | ack | (type << 18); 1174 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD); 1175 } 1176 } 1177 1178 spin_unlock(&priv->lock); 1179 1180 return IRQ_RETVAL(type); 1181 } 1182 1183 1184 1185 1186 /*************************************************************** 1187 * tlan_close 1188 * 1189 * Returns: 1190 * An error code. 1191 * Parms: 1192 * dev The device structure of the device to 1193 * close. 1194 * 1195 * This function shuts down the adapter. It records any 1196 * stats, puts the adapter into reset state, deactivates 1197 * its time as needed, and frees the irq it is using. 1198 * 1199 **************************************************************/ 1200 1201 static int tlan_close(struct net_device *dev) 1202 { 1203 tlan_stop(dev); 1204 1205 free_irq(dev->irq, dev); 1206 tlan_free_lists(dev); 1207 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name); 1208 1209 return 0; 1210 1211 } 1212 1213 1214 1215 1216 /*************************************************************** 1217 * tlan_get_stats 1218 * 1219 * Returns: 1220 * A pointer to the device's statistics structure. 1221 * Parms: 1222 * dev The device structure to return the 1223 * stats for. 1224 * 1225 * This function updates the devices statistics by reading 1226 * the TLAN chip's onboard registers. Then it returns the 1227 * address of the statistics structure. 1228 * 1229 **************************************************************/ 1230 1231 static struct net_device_stats *tlan_get_stats(struct net_device *dev) 1232 { 1233 struct tlan_priv *priv = netdev_priv(dev); 1234 int i; 1235 1236 /* Should only read stats if open ? */ 1237 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1238 1239 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name, 1240 priv->rx_eoc_count); 1241 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name, 1242 priv->tx_busy_count); 1243 if (debug & TLAN_DEBUG_GNRL) { 1244 tlan_print_dio(dev->base_addr); 1245 tlan_phy_print(dev); 1246 } 1247 if (debug & TLAN_DEBUG_LIST) { 1248 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) 1249 tlan_print_list(priv->rx_list + i, "RX", i); 1250 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) 1251 tlan_print_list(priv->tx_list + i, "TX", i); 1252 } 1253 1254 return &dev->stats; 1255 1256 } 1257 1258 1259 1260 1261 /*************************************************************** 1262 * tlan_set_multicast_list 1263 * 1264 * Returns: 1265 * Nothing 1266 * Parms: 1267 * dev The device structure to set the 1268 * multicast list for. 1269 * 1270 * This function sets the TLAN adaptor to various receive 1271 * modes. If the IFF_PROMISC flag is set, promiscuous 1272 * mode is acitviated. Otherwise, promiscuous mode is 1273 * turned off. If the IFF_ALLMULTI flag is set, then 1274 * the hash table is set to receive all group addresses. 1275 * Otherwise, the first three multicast addresses are 1276 * stored in AREG_1-3, and the rest are selected via the 1277 * hash table, as necessary. 1278 * 1279 **************************************************************/ 1280 1281 static void tlan_set_multicast_list(struct net_device *dev) 1282 { 1283 struct netdev_hw_addr *ha; 1284 u32 hash1 = 0; 1285 u32 hash2 = 0; 1286 int i; 1287 u32 offset; 1288 u8 tmp; 1289 1290 if (dev->flags & IFF_PROMISC) { 1291 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1292 tlan_dio_write8(dev->base_addr, 1293 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF); 1294 } else { 1295 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1296 tlan_dio_write8(dev->base_addr, 1297 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF); 1298 if (dev->flags & IFF_ALLMULTI) { 1299 for (i = 0; i < 3; i++) 1300 tlan_set_mac(dev, i + 1, NULL); 1301 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, 1302 0xffffffff); 1303 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, 1304 0xffffffff); 1305 } else { 1306 i = 0; 1307 netdev_for_each_mc_addr(ha, dev) { 1308 if (i < 3) { 1309 tlan_set_mac(dev, i + 1, 1310 (char *) &ha->addr); 1311 } else { 1312 offset = 1313 tlan_hash_func((u8 *)&ha->addr); 1314 if (offset < 32) 1315 hash1 |= (1 << offset); 1316 else 1317 hash2 |= (1 << (offset - 32)); 1318 } 1319 i++; 1320 } 1321 for ( ; i < 3; i++) 1322 tlan_set_mac(dev, i + 1, NULL); 1323 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1); 1324 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2); 1325 } 1326 } 1327 1328 } 1329 1330 1331 1332 /***************************************************************************** 1333 ****************************************************************************** 1334 1335 ThunderLAN driver interrupt vectors and table 1336 1337 please see chap. 4, "Interrupt Handling" of the "ThunderLAN 1338 Programmer's Guide" for more informations on handling interrupts 1339 generated by TLAN based adapters. 1340 1341 ****************************************************************************** 1342 *****************************************************************************/ 1343 1344 1345 1346 1347 /*************************************************************** 1348 * tlan_handle_tx_eof 1349 * 1350 * Returns: 1351 * 1 1352 * Parms: 1353 * dev Device assigned the IRQ that was 1354 * raised. 1355 * host_int The contents of the HOST_INT 1356 * port. 1357 * 1358 * This function handles Tx EOF interrupts which are raised 1359 * by the adapter when it has completed sending the 1360 * contents of a buffer. If detemines which list/buffer 1361 * was completed and resets it. If the buffer was the last 1362 * in the channel (EOC), then the function checks to see if 1363 * another buffer is ready to send, and if so, sends a Tx 1364 * Go command. Finally, the driver activates/continues the 1365 * activity LED. 1366 * 1367 **************************************************************/ 1368 1369 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int) 1370 { 1371 struct tlan_priv *priv = netdev_priv(dev); 1372 int eoc = 0; 1373 struct tlan_list *head_list; 1374 dma_addr_t head_list_phys; 1375 u32 ack = 0; 1376 u16 tmp_c_stat; 1377 1378 TLAN_DBG(TLAN_DEBUG_TX, 1379 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n", 1380 priv->tx_head, priv->tx_tail); 1381 head_list = priv->tx_list + priv->tx_head; 1382 1383 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1384 && (ack < 255)) { 1385 struct sk_buff *skb = tlan_get_skb(head_list); 1386 1387 ack++; 1388 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address, 1389 max(skb->len, 1390 (unsigned int)TLAN_MIN_FRAME_SIZE), 1391 PCI_DMA_TODEVICE); 1392 dev_kfree_skb_any(skb); 1393 head_list->buffer[8].address = 0; 1394 head_list->buffer[9].address = 0; 1395 1396 if (tmp_c_stat & TLAN_CSTAT_EOC) 1397 eoc = 1; 1398 1399 dev->stats.tx_bytes += head_list->frame_size; 1400 1401 head_list->c_stat = TLAN_CSTAT_UNUSED; 1402 netif_start_queue(dev); 1403 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS); 1404 head_list = priv->tx_list + priv->tx_head; 1405 } 1406 1407 if (!ack) 1408 netdev_info(dev, 1409 "Received interrupt for uncompleted TX frame\n"); 1410 1411 if (eoc) { 1412 TLAN_DBG(TLAN_DEBUG_TX, 1413 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n", 1414 priv->tx_head, priv->tx_tail); 1415 head_list = priv->tx_list + priv->tx_head; 1416 head_list_phys = priv->tx_list_dma 1417 + sizeof(struct tlan_list)*priv->tx_head; 1418 if ((head_list->c_stat & TLAN_CSTAT_READY) 1419 == TLAN_CSTAT_READY) { 1420 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1421 ack |= TLAN_HC_GO; 1422 } else { 1423 priv->tx_in_progress = 0; 1424 } 1425 } 1426 1427 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1428 tlan_dio_write8(dev->base_addr, 1429 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1430 if (priv->timer.function == NULL) { 1431 priv->timer.function = tlan_timer; 1432 priv->timer.data = (unsigned long) dev; 1433 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1434 priv->timer_set_at = jiffies; 1435 priv->timer_type = TLAN_TIMER_ACTIVITY; 1436 add_timer(&priv->timer); 1437 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1438 priv->timer_set_at = jiffies; 1439 } 1440 } 1441 1442 return ack; 1443 1444 } 1445 1446 1447 1448 1449 /*************************************************************** 1450 * TLan_HandleStatOverflow 1451 * 1452 * Returns: 1453 * 1 1454 * Parms: 1455 * dev Device assigned the IRQ that was 1456 * raised. 1457 * host_int The contents of the HOST_INT 1458 * port. 1459 * 1460 * This function handles the Statistics Overflow interrupt 1461 * which means that one or more of the TLAN statistics 1462 * registers has reached 1/2 capacity and needs to be read. 1463 * 1464 **************************************************************/ 1465 1466 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int) 1467 { 1468 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1469 1470 return 1; 1471 1472 } 1473 1474 1475 1476 1477 /*************************************************************** 1478 * TLan_HandleRxEOF 1479 * 1480 * Returns: 1481 * 1 1482 * Parms: 1483 * dev Device assigned the IRQ that was 1484 * raised. 1485 * host_int The contents of the HOST_INT 1486 * port. 1487 * 1488 * This function handles the Rx EOF interrupt which 1489 * indicates a frame has been received by the adapter from 1490 * the net and the frame has been transferred to memory. 1491 * The function determines the bounce buffer the frame has 1492 * been loaded into, creates a new sk_buff big enough to 1493 * hold the frame, and sends it to protocol stack. It 1494 * then resets the used buffer and appends it to the end 1495 * of the list. If the frame was the last in the Rx 1496 * channel (EOC), the function restarts the receive channel 1497 * by sending an Rx Go command to the adapter. Then it 1498 * activates/continues the activity LED. 1499 * 1500 **************************************************************/ 1501 1502 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int) 1503 { 1504 struct tlan_priv *priv = netdev_priv(dev); 1505 u32 ack = 0; 1506 int eoc = 0; 1507 struct tlan_list *head_list; 1508 struct sk_buff *skb; 1509 struct tlan_list *tail_list; 1510 u16 tmp_c_stat; 1511 dma_addr_t head_list_phys; 1512 1513 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n", 1514 priv->rx_head, priv->rx_tail); 1515 head_list = priv->rx_list + priv->rx_head; 1516 head_list_phys = 1517 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head; 1518 1519 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1520 && (ack < 255)) { 1521 dma_addr_t frame_dma = head_list->buffer[0].address; 1522 u32 frame_size = head_list->frame_size; 1523 struct sk_buff *new_skb; 1524 1525 ack++; 1526 if (tmp_c_stat & TLAN_CSTAT_EOC) 1527 eoc = 1; 1528 1529 new_skb = netdev_alloc_skb_ip_align(dev, 1530 TLAN_MAX_FRAME_SIZE + 5); 1531 if (!new_skb) 1532 goto drop_and_reuse; 1533 1534 skb = tlan_get_skb(head_list); 1535 pci_unmap_single(priv->pci_dev, frame_dma, 1536 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1537 skb_put(skb, frame_size); 1538 1539 dev->stats.rx_bytes += frame_size; 1540 1541 skb->protocol = eth_type_trans(skb, dev); 1542 netif_rx(skb); 1543 1544 head_list->buffer[0].address = 1545 pci_map_single(priv->pci_dev, new_skb->data, 1546 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1547 1548 tlan_store_skb(head_list, new_skb); 1549 drop_and_reuse: 1550 head_list->forward = 0; 1551 head_list->c_stat = 0; 1552 tail_list = priv->rx_list + priv->rx_tail; 1553 tail_list->forward = head_list_phys; 1554 1555 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS); 1556 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS); 1557 head_list = priv->rx_list + priv->rx_head; 1558 head_list_phys = priv->rx_list_dma 1559 + sizeof(struct tlan_list)*priv->rx_head; 1560 } 1561 1562 if (!ack) 1563 netdev_info(dev, 1564 "Received interrupt for uncompleted RX frame\n"); 1565 1566 1567 if (eoc) { 1568 TLAN_DBG(TLAN_DEBUG_RX, 1569 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n", 1570 priv->rx_head, priv->rx_tail); 1571 head_list = priv->rx_list + priv->rx_head; 1572 head_list_phys = priv->rx_list_dma 1573 + sizeof(struct tlan_list)*priv->rx_head; 1574 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1575 ack |= TLAN_HC_GO | TLAN_HC_RT; 1576 priv->rx_eoc_count++; 1577 } 1578 1579 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1580 tlan_dio_write8(dev->base_addr, 1581 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1582 if (priv->timer.function == NULL) { 1583 priv->timer.function = tlan_timer; 1584 priv->timer.data = (unsigned long) dev; 1585 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1586 priv->timer_set_at = jiffies; 1587 priv->timer_type = TLAN_TIMER_ACTIVITY; 1588 add_timer(&priv->timer); 1589 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1590 priv->timer_set_at = jiffies; 1591 } 1592 } 1593 1594 return ack; 1595 1596 } 1597 1598 1599 1600 1601 /*************************************************************** 1602 * tlan_handle_dummy 1603 * 1604 * Returns: 1605 * 1 1606 * Parms: 1607 * dev Device assigned the IRQ that was 1608 * raised. 1609 * host_int The contents of the HOST_INT 1610 * port. 1611 * 1612 * This function handles the Dummy interrupt, which is 1613 * raised whenever a test interrupt is generated by setting 1614 * the Req_Int bit of HOST_CMD to 1. 1615 * 1616 **************************************************************/ 1617 1618 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int) 1619 { 1620 netdev_info(dev, "Test interrupt\n"); 1621 return 1; 1622 1623 } 1624 1625 1626 1627 1628 /*************************************************************** 1629 * tlan_handle_tx_eoc 1630 * 1631 * Returns: 1632 * 1 1633 * Parms: 1634 * dev Device assigned the IRQ that was 1635 * raised. 1636 * host_int The contents of the HOST_INT 1637 * port. 1638 * 1639 * This driver is structured to determine EOC occurrences by 1640 * reading the CSTAT member of the list structure. Tx EOC 1641 * interrupts are disabled via the DIO INTDIS register. 1642 * However, TLAN chips before revision 3.0 didn't have this 1643 * functionality, so process EOC events if this is the 1644 * case. 1645 * 1646 **************************************************************/ 1647 1648 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int) 1649 { 1650 struct tlan_priv *priv = netdev_priv(dev); 1651 struct tlan_list *head_list; 1652 dma_addr_t head_list_phys; 1653 u32 ack = 1; 1654 1655 host_int = 0; 1656 if (priv->tlan_rev < 0x30) { 1657 TLAN_DBG(TLAN_DEBUG_TX, 1658 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n", 1659 priv->tx_head, priv->tx_tail); 1660 head_list = priv->tx_list + priv->tx_head; 1661 head_list_phys = priv->tx_list_dma 1662 + sizeof(struct tlan_list)*priv->tx_head; 1663 if ((head_list->c_stat & TLAN_CSTAT_READY) 1664 == TLAN_CSTAT_READY) { 1665 netif_stop_queue(dev); 1666 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1667 ack |= TLAN_HC_GO; 1668 } else { 1669 priv->tx_in_progress = 0; 1670 } 1671 } 1672 1673 return ack; 1674 1675 } 1676 1677 1678 1679 1680 /*************************************************************** 1681 * tlan_handle_status_check 1682 * 1683 * Returns: 1684 * 0 if Adapter check, 1 if Network Status check. 1685 * Parms: 1686 * dev Device assigned the IRQ that was 1687 * raised. 1688 * host_int The contents of the HOST_INT 1689 * port. 1690 * 1691 * This function handles Adapter Check/Network Status 1692 * interrupts generated by the adapter. It checks the 1693 * vector in the HOST_INT register to determine if it is 1694 * an Adapter Check interrupt. If so, it resets the 1695 * adapter. Otherwise it clears the status registers 1696 * and services the PHY. 1697 * 1698 **************************************************************/ 1699 1700 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int) 1701 { 1702 struct tlan_priv *priv = netdev_priv(dev); 1703 u32 ack; 1704 u32 error; 1705 u8 net_sts; 1706 u32 phy; 1707 u16 tlphy_ctl; 1708 u16 tlphy_sts; 1709 1710 ack = 1; 1711 if (host_int & TLAN_HI_IV_MASK) { 1712 netif_stop_queue(dev); 1713 error = inl(dev->base_addr + TLAN_CH_PARM); 1714 netdev_info(dev, "Adaptor Error = 0x%x\n", error); 1715 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1716 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD); 1717 1718 schedule_work(&priv->tlan_tqueue); 1719 1720 netif_wake_queue(dev); 1721 ack = 0; 1722 } else { 1723 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name); 1724 phy = priv->phy[priv->phy_num]; 1725 1726 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS); 1727 if (net_sts) { 1728 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts); 1729 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n", 1730 dev->name, (unsigned) net_sts); 1731 } 1732 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) { 1733 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts); 1734 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 1735 if (!(tlphy_sts & TLAN_TS_POLOK) && 1736 !(tlphy_ctl & TLAN_TC_SWAPOL)) { 1737 tlphy_ctl |= TLAN_TC_SWAPOL; 1738 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1739 tlphy_ctl); 1740 } else if ((tlphy_sts & TLAN_TS_POLOK) && 1741 (tlphy_ctl & TLAN_TC_SWAPOL)) { 1742 tlphy_ctl &= ~TLAN_TC_SWAPOL; 1743 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1744 tlphy_ctl); 1745 } 1746 1747 if (debug) 1748 tlan_phy_print(dev); 1749 } 1750 } 1751 1752 return ack; 1753 1754 } 1755 1756 1757 1758 1759 /*************************************************************** 1760 * tlan_handle_rx_eoc 1761 * 1762 * Returns: 1763 * 1 1764 * Parms: 1765 * dev Device assigned the IRQ that was 1766 * raised. 1767 * host_int The contents of the HOST_INT 1768 * port. 1769 * 1770 * This driver is structured to determine EOC occurrences by 1771 * reading the CSTAT member of the list structure. Rx EOC 1772 * interrupts are disabled via the DIO INTDIS register. 1773 * However, TLAN chips before revision 3.0 didn't have this 1774 * CSTAT member or a INTDIS register, so if this chip is 1775 * pre-3.0, process EOC interrupts normally. 1776 * 1777 **************************************************************/ 1778 1779 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int) 1780 { 1781 struct tlan_priv *priv = netdev_priv(dev); 1782 dma_addr_t head_list_phys; 1783 u32 ack = 1; 1784 1785 if (priv->tlan_rev < 0x30) { 1786 TLAN_DBG(TLAN_DEBUG_RX, 1787 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n", 1788 priv->rx_head, priv->rx_tail); 1789 head_list_phys = priv->rx_list_dma 1790 + sizeof(struct tlan_list)*priv->rx_head; 1791 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1792 ack |= TLAN_HC_GO | TLAN_HC_RT; 1793 priv->rx_eoc_count++; 1794 } 1795 1796 return ack; 1797 1798 } 1799 1800 1801 1802 1803 /***************************************************************************** 1804 ****************************************************************************** 1805 1806 ThunderLAN driver timer function 1807 1808 ****************************************************************************** 1809 *****************************************************************************/ 1810 1811 1812 /*************************************************************** 1813 * tlan_timer 1814 * 1815 * Returns: 1816 * Nothing 1817 * Parms: 1818 * data A value given to add timer when 1819 * add_timer was called. 1820 * 1821 * This function handles timed functionality for the 1822 * TLAN driver. The two current timer uses are for 1823 * delaying for autonegotionation and driving the ACT LED. 1824 * - Autonegotiation requires being allowed about 1825 * 2 1/2 seconds before attempting to transmit a 1826 * packet. It would be a very bad thing to hang 1827 * the kernel this long, so the driver doesn't 1828 * allow transmission 'til after this time, for 1829 * certain PHYs. It would be much nicer if all 1830 * PHYs were interrupt-capable like the internal 1831 * PHY. 1832 * - The ACT LED, which shows adapter activity, is 1833 * driven by the driver, and so must be left on 1834 * for a short period to power up the LED so it 1835 * can be seen. This delay can be changed by 1836 * changing the TLAN_TIMER_ACT_DELAY in tlan.h, 1837 * if desired. 100 ms produces a slightly 1838 * sluggish response. 1839 * 1840 **************************************************************/ 1841 1842 static void tlan_timer(unsigned long data) 1843 { 1844 struct net_device *dev = (struct net_device *) data; 1845 struct tlan_priv *priv = netdev_priv(dev); 1846 u32 elapsed; 1847 unsigned long flags = 0; 1848 1849 priv->timer.function = NULL; 1850 1851 switch (priv->timer_type) { 1852 case TLAN_TIMER_PHY_PDOWN: 1853 tlan_phy_power_down(dev); 1854 break; 1855 case TLAN_TIMER_PHY_PUP: 1856 tlan_phy_power_up(dev); 1857 break; 1858 case TLAN_TIMER_PHY_RESET: 1859 tlan_phy_reset(dev); 1860 break; 1861 case TLAN_TIMER_PHY_START_LINK: 1862 tlan_phy_start_link(dev); 1863 break; 1864 case TLAN_TIMER_PHY_FINISH_AN: 1865 tlan_phy_finish_auto_neg(dev); 1866 break; 1867 case TLAN_TIMER_FINISH_RESET: 1868 tlan_finish_reset(dev); 1869 break; 1870 case TLAN_TIMER_ACTIVITY: 1871 spin_lock_irqsave(&priv->lock, flags); 1872 if (priv->timer.function == NULL) { 1873 elapsed = jiffies - priv->timer_set_at; 1874 if (elapsed >= TLAN_TIMER_ACT_DELAY) { 1875 tlan_dio_write8(dev->base_addr, 1876 TLAN_LED_REG, TLAN_LED_LINK); 1877 } else { 1878 priv->timer.function = tlan_timer; 1879 priv->timer.expires = priv->timer_set_at 1880 + TLAN_TIMER_ACT_DELAY; 1881 spin_unlock_irqrestore(&priv->lock, flags); 1882 add_timer(&priv->timer); 1883 break; 1884 } 1885 } 1886 spin_unlock_irqrestore(&priv->lock, flags); 1887 break; 1888 default: 1889 break; 1890 } 1891 1892 } 1893 1894 1895 /***************************************************************************** 1896 ****************************************************************************** 1897 1898 ThunderLAN driver adapter related routines 1899 1900 ****************************************************************************** 1901 *****************************************************************************/ 1902 1903 1904 /*************************************************************** 1905 * tlan_reset_lists 1906 * 1907 * Returns: 1908 * Nothing 1909 * Parms: 1910 * dev The device structure with the list 1911 * stuctures to be reset. 1912 * 1913 * This routine sets the variables associated with managing 1914 * the TLAN lists to their initial values. 1915 * 1916 **************************************************************/ 1917 1918 static void tlan_reset_lists(struct net_device *dev) 1919 { 1920 struct tlan_priv *priv = netdev_priv(dev); 1921 int i; 1922 struct tlan_list *list; 1923 dma_addr_t list_phys; 1924 struct sk_buff *skb; 1925 1926 priv->tx_head = 0; 1927 priv->tx_tail = 0; 1928 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1929 list = priv->tx_list + i; 1930 list->c_stat = TLAN_CSTAT_UNUSED; 1931 list->buffer[0].address = 0; 1932 list->buffer[2].count = 0; 1933 list->buffer[2].address = 0; 1934 list->buffer[8].address = 0; 1935 list->buffer[9].address = 0; 1936 } 1937 1938 priv->rx_head = 0; 1939 priv->rx_tail = TLAN_NUM_RX_LISTS - 1; 1940 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1941 list = priv->rx_list + i; 1942 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i; 1943 list->c_stat = TLAN_CSTAT_READY; 1944 list->frame_size = TLAN_MAX_FRAME_SIZE; 1945 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; 1946 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5); 1947 if (!skb) 1948 break; 1949 1950 list->buffer[0].address = pci_map_single(priv->pci_dev, 1951 skb->data, 1952 TLAN_MAX_FRAME_SIZE, 1953 PCI_DMA_FROMDEVICE); 1954 tlan_store_skb(list, skb); 1955 list->buffer[1].count = 0; 1956 list->buffer[1].address = 0; 1957 list->forward = list_phys + sizeof(struct tlan_list); 1958 } 1959 1960 /* in case ran out of memory early, clear bits */ 1961 while (i < TLAN_NUM_RX_LISTS) { 1962 tlan_store_skb(priv->rx_list + i, NULL); 1963 ++i; 1964 } 1965 list->forward = 0; 1966 1967 } 1968 1969 1970 static void tlan_free_lists(struct net_device *dev) 1971 { 1972 struct tlan_priv *priv = netdev_priv(dev); 1973 int i; 1974 struct tlan_list *list; 1975 struct sk_buff *skb; 1976 1977 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1978 list = priv->tx_list + i; 1979 skb = tlan_get_skb(list); 1980 if (skb) { 1981 pci_unmap_single( 1982 priv->pci_dev, 1983 list->buffer[0].address, 1984 max(skb->len, 1985 (unsigned int)TLAN_MIN_FRAME_SIZE), 1986 PCI_DMA_TODEVICE); 1987 dev_kfree_skb_any(skb); 1988 list->buffer[8].address = 0; 1989 list->buffer[9].address = 0; 1990 } 1991 } 1992 1993 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1994 list = priv->rx_list + i; 1995 skb = tlan_get_skb(list); 1996 if (skb) { 1997 pci_unmap_single(priv->pci_dev, 1998 list->buffer[0].address, 1999 TLAN_MAX_FRAME_SIZE, 2000 PCI_DMA_FROMDEVICE); 2001 dev_kfree_skb_any(skb); 2002 list->buffer[8].address = 0; 2003 list->buffer[9].address = 0; 2004 } 2005 } 2006 } 2007 2008 2009 2010 2011 /*************************************************************** 2012 * tlan_print_dio 2013 * 2014 * Returns: 2015 * Nothing 2016 * Parms: 2017 * io_base Base IO port of the device of 2018 * which to print DIO registers. 2019 * 2020 * This function prints out all the internal (DIO) 2021 * registers of a TLAN chip. 2022 * 2023 **************************************************************/ 2024 2025 static void tlan_print_dio(u16 io_base) 2026 { 2027 u32 data0, data1; 2028 int i; 2029 2030 pr_info("Contents of internal registers for io base 0x%04hx\n", 2031 io_base); 2032 pr_info("Off. +0 +4\n"); 2033 for (i = 0; i < 0x4C; i += 8) { 2034 data0 = tlan_dio_read32(io_base, i); 2035 data1 = tlan_dio_read32(io_base, i + 0x4); 2036 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1); 2037 } 2038 2039 } 2040 2041 2042 2043 2044 /*************************************************************** 2045 * TLan_PrintList 2046 * 2047 * Returns: 2048 * Nothing 2049 * Parms: 2050 * list A pointer to the struct tlan_list structure to 2051 * be printed. 2052 * type A string to designate type of list, 2053 * "Rx" or "Tx". 2054 * num The index of the list. 2055 * 2056 * This function prints out the contents of the list 2057 * pointed to by the list parameter. 2058 * 2059 **************************************************************/ 2060 2061 static void tlan_print_list(struct tlan_list *list, char *type, int num) 2062 { 2063 int i; 2064 2065 pr_info("%s List %d at %p\n", type, num, list); 2066 pr_info(" Forward = 0x%08x\n", list->forward); 2067 pr_info(" CSTAT = 0x%04hx\n", list->c_stat); 2068 pr_info(" Frame Size = 0x%04hx\n", list->frame_size); 2069 /* for (i = 0; i < 10; i++) { */ 2070 for (i = 0; i < 2; i++) { 2071 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n", 2072 i, list->buffer[i].count, list->buffer[i].address); 2073 } 2074 2075 } 2076 2077 2078 2079 2080 /*************************************************************** 2081 * tlan_read_and_clear_stats 2082 * 2083 * Returns: 2084 * Nothing 2085 * Parms: 2086 * dev Pointer to device structure of adapter 2087 * to which to read stats. 2088 * record Flag indicating whether to add 2089 * 2090 * This functions reads all the internal status registers 2091 * of the TLAN chip, which clears them as a side effect. 2092 * It then either adds the values to the device's status 2093 * struct, or discards them, depending on whether record 2094 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0). 2095 * 2096 **************************************************************/ 2097 2098 static void tlan_read_and_clear_stats(struct net_device *dev, int record) 2099 { 2100 u32 tx_good, tx_under; 2101 u32 rx_good, rx_over; 2102 u32 def_tx, crc, code; 2103 u32 multi_col, single_col; 2104 u32 excess_col, late_col, loss; 2105 2106 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2107 tx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2108 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2109 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2110 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2111 2112 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2113 rx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2114 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2115 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2116 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2117 2118 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR); 2119 def_tx = inb(dev->base_addr + TLAN_DIO_DATA); 2120 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2121 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2122 code = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2123 2124 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2125 multi_col = inb(dev->base_addr + TLAN_DIO_DATA); 2126 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2127 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2128 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8; 2129 2130 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2131 excess_col = inb(dev->base_addr + TLAN_DIO_DATA); 2132 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1); 2133 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2134 2135 if (record) { 2136 dev->stats.rx_packets += rx_good; 2137 dev->stats.rx_errors += rx_over + crc + code; 2138 dev->stats.tx_packets += tx_good; 2139 dev->stats.tx_errors += tx_under + loss; 2140 dev->stats.collisions += multi_col 2141 + single_col + excess_col + late_col; 2142 2143 dev->stats.rx_over_errors += rx_over; 2144 dev->stats.rx_crc_errors += crc; 2145 dev->stats.rx_frame_errors += code; 2146 2147 dev->stats.tx_aborted_errors += tx_under; 2148 dev->stats.tx_carrier_errors += loss; 2149 } 2150 2151 } 2152 2153 2154 2155 2156 /*************************************************************** 2157 * TLan_Reset 2158 * 2159 * Returns: 2160 * 0 2161 * Parms: 2162 * dev Pointer to device structure of adapter 2163 * to be reset. 2164 * 2165 * This function resets the adapter and it's physical 2166 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN 2167 * Programmer's Guide" for details. The routine tries to 2168 * implement what is detailed there, though adjustments 2169 * have been made. 2170 * 2171 **************************************************************/ 2172 2173 static void 2174 tlan_reset_adapter(struct net_device *dev) 2175 { 2176 struct tlan_priv *priv = netdev_priv(dev); 2177 int i; 2178 u32 addr; 2179 u32 data; 2180 u8 data8; 2181 2182 priv->tlan_full_duplex = false; 2183 priv->phy_online = 0; 2184 netif_carrier_off(dev); 2185 2186 /* 1. Assert reset bit. */ 2187 2188 data = inl(dev->base_addr + TLAN_HOST_CMD); 2189 data |= TLAN_HC_AD_RST; 2190 outl(data, dev->base_addr + TLAN_HOST_CMD); 2191 2192 udelay(1000); 2193 2194 /* 2. Turn off interrupts. (Probably isn't necessary) */ 2195 2196 data = inl(dev->base_addr + TLAN_HOST_CMD); 2197 data |= TLAN_HC_INT_OFF; 2198 outl(data, dev->base_addr + TLAN_HOST_CMD); 2199 2200 /* 3. Clear AREGs and HASHs. */ 2201 2202 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4) 2203 tlan_dio_write32(dev->base_addr, (u16) i, 0); 2204 2205 /* 4. Setup NetConfig register. */ 2206 2207 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; 2208 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data); 2209 2210 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */ 2211 2212 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD); 2213 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD); 2214 2215 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */ 2216 2217 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2218 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2219 tlan_set_bit(TLAN_NET_SIO_NMRST, addr); 2220 2221 /* 7. Setup the remaining registers. */ 2222 2223 if (priv->tlan_rev >= 0x30) { 2224 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC; 2225 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8); 2226 } 2227 tlan_phy_detect(dev); 2228 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN; 2229 2230 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) { 2231 data |= TLAN_NET_CFG_BIT; 2232 if (priv->aui == 1) { 2233 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a); 2234 } else if (priv->duplex == TLAN_DUPLEX_FULL) { 2235 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00); 2236 priv->tlan_full_duplex = true; 2237 } else { 2238 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08); 2239 } 2240 } 2241 2242 /* don't power down internal PHY if we're going to use it */ 2243 if (priv->phy_num == 0 || 2244 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)) 2245 data |= TLAN_NET_CFG_PHY_EN; 2246 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data); 2247 2248 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) 2249 tlan_finish_reset(dev); 2250 else 2251 tlan_phy_power_down(dev); 2252 2253 } 2254 2255 2256 2257 2258 static void 2259 tlan_finish_reset(struct net_device *dev) 2260 { 2261 struct tlan_priv *priv = netdev_priv(dev); 2262 u8 data; 2263 u32 phy; 2264 u8 sio; 2265 u16 status; 2266 u16 partner; 2267 u16 tlphy_ctl; 2268 u16 tlphy_par; 2269 u16 tlphy_id1, tlphy_id2; 2270 int i; 2271 2272 phy = priv->phy[priv->phy_num]; 2273 2274 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP; 2275 if (priv->tlan_full_duplex) 2276 data |= TLAN_NET_CMD_DUPLEX; 2277 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data); 2278 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5; 2279 if (priv->phy_num == 0) 2280 data |= TLAN_NET_MASK_MASK7; 2281 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data); 2282 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7); 2283 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1); 2284 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2); 2285 2286 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) || 2287 (priv->aui)) { 2288 status = MII_GS_LINK; 2289 netdev_info(dev, "Link forced\n"); 2290 } else { 2291 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2292 udelay(1000); 2293 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2294 if (status & MII_GS_LINK) { 2295 /* We only support link info on Nat.Sem. PHY's */ 2296 if ((tlphy_id1 == NAT_SEM_ID1) && 2297 (tlphy_id2 == NAT_SEM_ID2)) { 2298 tlan_mii_read_reg(dev, phy, MII_AN_LPA, 2299 &partner); 2300 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, 2301 &tlphy_par); 2302 2303 netdev_info(dev, 2304 "Link active, %s %uMbps %s-Duplex\n", 2305 !(tlphy_par & TLAN_PHY_AN_EN_STAT) 2306 ? "forced" : "Autonegotiation enabled,", 2307 tlphy_par & TLAN_PHY_SPEED_100 2308 ? 100 : 10, 2309 tlphy_par & TLAN_PHY_DUPLEX_FULL 2310 ? "Full" : "Half"); 2311 2312 if (tlphy_par & TLAN_PHY_AN_EN_STAT) { 2313 netdev_info(dev, "Partner capability:"); 2314 for (i = 5; i < 10; i++) 2315 if (partner & (1 << i)) 2316 pr_cont(" %s", 2317 media[i-5]); 2318 pr_cont("\n"); 2319 } 2320 } else 2321 netdev_info(dev, "Link active\n"); 2322 /* Enabling link beat monitoring */ 2323 priv->media_timer.function = tlan_phy_monitor; 2324 priv->media_timer.data = (unsigned long) dev; 2325 priv->media_timer.expires = jiffies + HZ; 2326 add_timer(&priv->media_timer); 2327 } 2328 } 2329 2330 if (priv->phy_num == 0) { 2331 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 2332 tlphy_ctl |= TLAN_TC_INTEN; 2333 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl); 2334 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO); 2335 sio |= TLAN_NET_SIO_MINTEN; 2336 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio); 2337 } 2338 2339 if (status & MII_GS_LINK) { 2340 tlan_set_mac(dev, 0, dev->dev_addr); 2341 priv->phy_online = 1; 2342 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1); 2343 if (debug >= 1 && debug != TLAN_DEBUG_PROBE) 2344 outb((TLAN_HC_REQ_INT >> 8), 2345 dev->base_addr + TLAN_HOST_CMD + 1); 2346 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM); 2347 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD); 2348 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); 2349 netif_carrier_on(dev); 2350 } else { 2351 netdev_info(dev, "Link inactive, will retry in 10 secs...\n"); 2352 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET); 2353 return; 2354 } 2355 tlan_set_multicast_list(dev); 2356 2357 } 2358 2359 2360 2361 2362 /*************************************************************** 2363 * tlan_set_mac 2364 * 2365 * Returns: 2366 * Nothing 2367 * Parms: 2368 * dev Pointer to device structure of adapter 2369 * on which to change the AREG. 2370 * areg The AREG to set the address in (0 - 3). 2371 * mac A pointer to an array of chars. Each 2372 * element stores one byte of the address. 2373 * IE, it isn't in ascii. 2374 * 2375 * This function transfers a MAC address to one of the 2376 * TLAN AREGs (address registers). The TLAN chip locks 2377 * the register on writing to offset 0 and unlocks the 2378 * register after writing to offset 5. If NULL is passed 2379 * in mac, then the AREG is filled with 0's. 2380 * 2381 **************************************************************/ 2382 2383 static void tlan_set_mac(struct net_device *dev, int areg, char *mac) 2384 { 2385 int i; 2386 2387 areg *= 6; 2388 2389 if (mac != NULL) { 2390 for (i = 0; i < 6; i++) 2391 tlan_dio_write8(dev->base_addr, 2392 TLAN_AREG_0 + areg + i, mac[i]); 2393 } else { 2394 for (i = 0; i < 6; i++) 2395 tlan_dio_write8(dev->base_addr, 2396 TLAN_AREG_0 + areg + i, 0); 2397 } 2398 2399 } 2400 2401 2402 2403 2404 /***************************************************************************** 2405 ****************************************************************************** 2406 2407 ThunderLAN driver PHY layer routines 2408 2409 ****************************************************************************** 2410 *****************************************************************************/ 2411 2412 2413 2414 /********************************************************************* 2415 * tlan_phy_print 2416 * 2417 * Returns: 2418 * Nothing 2419 * Parms: 2420 * dev A pointer to the device structure of the 2421 * TLAN device having the PHYs to be detailed. 2422 * 2423 * This function prints the registers a PHY (aka transceiver). 2424 * 2425 ********************************************************************/ 2426 2427 static void tlan_phy_print(struct net_device *dev) 2428 { 2429 struct tlan_priv *priv = netdev_priv(dev); 2430 u16 i, data0, data1, data2, data3, phy; 2431 2432 phy = priv->phy[priv->phy_num]; 2433 2434 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2435 netdev_info(dev, "Unmanaged PHY\n"); 2436 } else if (phy <= TLAN_PHY_MAX_ADDR) { 2437 netdev_info(dev, "PHY 0x%02x\n", phy); 2438 pr_info(" Off. +0 +1 +2 +3\n"); 2439 for (i = 0; i < 0x20; i += 4) { 2440 tlan_mii_read_reg(dev, phy, i, &data0); 2441 tlan_mii_read_reg(dev, phy, i + 1, &data1); 2442 tlan_mii_read_reg(dev, phy, i + 2, &data2); 2443 tlan_mii_read_reg(dev, phy, i + 3, &data3); 2444 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n", 2445 i, data0, data1, data2, data3); 2446 } 2447 } else { 2448 netdev_info(dev, "Invalid PHY\n"); 2449 } 2450 2451 } 2452 2453 2454 2455 2456 /********************************************************************* 2457 * tlan_phy_detect 2458 * 2459 * Returns: 2460 * Nothing 2461 * Parms: 2462 * dev A pointer to the device structure of the adapter 2463 * for which the PHY needs determined. 2464 * 2465 * So far I've found that adapters which have external PHYs 2466 * may also use the internal PHY for part of the functionality. 2467 * (eg, AUI/Thinnet). This function finds out if this TLAN 2468 * chip has an internal PHY, and then finds the first external 2469 * PHY (starting from address 0) if it exists). 2470 * 2471 ********************************************************************/ 2472 2473 static void tlan_phy_detect(struct net_device *dev) 2474 { 2475 struct tlan_priv *priv = netdev_priv(dev); 2476 u16 control; 2477 u16 hi; 2478 u16 lo; 2479 u32 phy; 2480 2481 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2482 priv->phy_num = 0xffff; 2483 return; 2484 } 2485 2486 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi); 2487 2488 if (hi != 0xffff) 2489 priv->phy[0] = TLAN_PHY_MAX_ADDR; 2490 else 2491 priv->phy[0] = TLAN_PHY_NONE; 2492 2493 priv->phy[1] = TLAN_PHY_NONE; 2494 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) { 2495 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control); 2496 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi); 2497 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo); 2498 if ((control != 0xffff) || 2499 (hi != 0xffff) || (lo != 0xffff)) { 2500 TLAN_DBG(TLAN_DEBUG_GNRL, 2501 "PHY found at %02x %04x %04x %04x\n", 2502 phy, control, hi, lo); 2503 if ((priv->phy[1] == TLAN_PHY_NONE) && 2504 (phy != TLAN_PHY_MAX_ADDR)) { 2505 priv->phy[1] = phy; 2506 } 2507 } 2508 } 2509 2510 if (priv->phy[1] != TLAN_PHY_NONE) 2511 priv->phy_num = 1; 2512 else if (priv->phy[0] != TLAN_PHY_NONE) 2513 priv->phy_num = 0; 2514 else 2515 netdev_info(dev, "Cannot initialize device, no PHY was found!\n"); 2516 2517 } 2518 2519 2520 2521 2522 static void tlan_phy_power_down(struct net_device *dev) 2523 { 2524 struct tlan_priv *priv = netdev_priv(dev); 2525 u16 value; 2526 2527 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name); 2528 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE; 2529 tlan_mii_sync(dev->base_addr); 2530 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2531 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) { 2532 /* if using internal PHY, the external PHY must be powered on */ 2533 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) 2534 value = MII_GC_ISOLATE; /* just isolate it from MII */ 2535 tlan_mii_sync(dev->base_addr); 2536 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value); 2537 } 2538 2539 /* Wait for 50 ms and powerup 2540 * This is abitrary. It is intended to make sure the 2541 * transceiver settles. 2542 */ 2543 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP); 2544 2545 } 2546 2547 2548 2549 2550 static void tlan_phy_power_up(struct net_device *dev) 2551 { 2552 struct tlan_priv *priv = netdev_priv(dev); 2553 u16 value; 2554 2555 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name); 2556 tlan_mii_sync(dev->base_addr); 2557 value = MII_GC_LOOPBK; 2558 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2559 tlan_mii_sync(dev->base_addr); 2560 /* Wait for 500 ms and reset the 2561 * transceiver. The TLAN docs say both 50 ms and 2562 * 500 ms, so do the longer, just in case. 2563 */ 2564 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET); 2565 2566 } 2567 2568 2569 2570 2571 static void tlan_phy_reset(struct net_device *dev) 2572 { 2573 struct tlan_priv *priv = netdev_priv(dev); 2574 u16 phy; 2575 u16 value; 2576 unsigned long timeout = jiffies + HZ; 2577 2578 phy = priv->phy[priv->phy_num]; 2579 2580 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name); 2581 tlan_mii_sync(dev->base_addr); 2582 value = MII_GC_LOOPBK | MII_GC_RESET; 2583 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value); 2584 do { 2585 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value); 2586 if (time_after(jiffies, timeout)) { 2587 netdev_err(dev, "PHY reset timeout\n"); 2588 return; 2589 } 2590 } while (value & MII_GC_RESET); 2591 2592 /* Wait for 500 ms and initialize. 2593 * I don't remember why I wait this long. 2594 * I've changed this to 50ms, as it seems long enough. 2595 */ 2596 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK); 2597 2598 } 2599 2600 2601 2602 2603 static void tlan_phy_start_link(struct net_device *dev) 2604 { 2605 struct tlan_priv *priv = netdev_priv(dev); 2606 u16 ability; 2607 u16 control; 2608 u16 data; 2609 u16 phy; 2610 u16 status; 2611 u16 tctl; 2612 2613 phy = priv->phy[priv->phy_num]; 2614 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name); 2615 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2616 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability); 2617 2618 if ((status & MII_GS_AUTONEG) && 2619 (!priv->aui)) { 2620 ability = status >> 11; 2621 if (priv->speed == TLAN_SPEED_10 && 2622 priv->duplex == TLAN_DUPLEX_HALF) { 2623 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000); 2624 } else if (priv->speed == TLAN_SPEED_10 && 2625 priv->duplex == TLAN_DUPLEX_FULL) { 2626 priv->tlan_full_duplex = true; 2627 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100); 2628 } else if (priv->speed == TLAN_SPEED_100 && 2629 priv->duplex == TLAN_DUPLEX_HALF) { 2630 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000); 2631 } else if (priv->speed == TLAN_SPEED_100 && 2632 priv->duplex == TLAN_DUPLEX_FULL) { 2633 priv->tlan_full_duplex = true; 2634 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100); 2635 } else { 2636 2637 /* Set Auto-Neg advertisement */ 2638 tlan_mii_write_reg(dev, phy, MII_AN_ADV, 2639 (ability << 5) | 1); 2640 /* Enablee Auto-Neg */ 2641 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000); 2642 /* Restart Auto-Neg */ 2643 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200); 2644 /* Wait for 4 sec for autonegotiation 2645 * to complete. The max spec time is less than this 2646 * but the card need additional time to start AN. 2647 * .5 sec should be plenty extra. 2648 */ 2649 netdev_info(dev, "Starting autonegotiation\n"); 2650 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN); 2651 return; 2652 } 2653 2654 } 2655 2656 if ((priv->aui) && (priv->phy_num != 0)) { 2657 priv->phy_num = 0; 2658 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN 2659 | TLAN_NET_CFG_PHY_EN; 2660 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data); 2661 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN); 2662 return; 2663 } else if (priv->phy_num == 0) { 2664 control = 0; 2665 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl); 2666 if (priv->aui) { 2667 tctl |= TLAN_TC_AUISEL; 2668 } else { 2669 tctl &= ~TLAN_TC_AUISEL; 2670 if (priv->duplex == TLAN_DUPLEX_FULL) { 2671 control |= MII_GC_DUPLEX; 2672 priv->tlan_full_duplex = true; 2673 } 2674 if (priv->speed == TLAN_SPEED_100) 2675 control |= MII_GC_SPEEDSEL; 2676 } 2677 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control); 2678 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl); 2679 } 2680 2681 /* Wait for 2 sec to give the transceiver time 2682 * to establish link. 2683 */ 2684 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET); 2685 2686 } 2687 2688 2689 2690 2691 static void tlan_phy_finish_auto_neg(struct net_device *dev) 2692 { 2693 struct tlan_priv *priv = netdev_priv(dev); 2694 u16 an_adv; 2695 u16 an_lpa; 2696 u16 mode; 2697 u16 phy; 2698 u16 status; 2699 2700 phy = priv->phy[priv->phy_num]; 2701 2702 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2703 udelay(1000); 2704 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2705 2706 if (!(status & MII_GS_AUTOCMPLT)) { 2707 /* Wait for 8 sec to give the process 2708 * more time. Perhaps we should fail after a while. 2709 */ 2710 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN); 2711 return; 2712 } 2713 2714 netdev_info(dev, "Autonegotiation complete\n"); 2715 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv); 2716 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa); 2717 mode = an_adv & an_lpa & 0x03E0; 2718 if (mode & 0x0100) 2719 priv->tlan_full_duplex = true; 2720 else if (!(mode & 0x0080) && (mode & 0x0040)) 2721 priv->tlan_full_duplex = true; 2722 2723 /* switch to internal PHY for 10 Mbps */ 2724 if ((!(mode & 0x0180)) && 2725 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) && 2726 (priv->phy_num != 0)) { 2727 priv->phy_num = 0; 2728 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN); 2729 return; 2730 } 2731 2732 if (priv->phy_num == 0) { 2733 if ((priv->duplex == TLAN_DUPLEX_FULL) || 2734 (an_adv & an_lpa & 0x0040)) { 2735 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2736 MII_GC_AUTOENB | MII_GC_DUPLEX); 2737 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n"); 2738 } else { 2739 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2740 MII_GC_AUTOENB); 2741 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n"); 2742 } 2743 } 2744 2745 /* Wait for 100 ms. No reason in partiticular. 2746 */ 2747 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET); 2748 2749 } 2750 2751 2752 /********************************************************************* 2753 * 2754 * tlan_phy_monitor 2755 * 2756 * Returns: 2757 * None 2758 * 2759 * Params: 2760 * data The device structure of this device. 2761 * 2762 * 2763 * This function monitors PHY condition by reading the status 2764 * register via the MII bus, controls LINK LED and notifies the 2765 * kernel about link state. 2766 * 2767 *******************************************************************/ 2768 2769 static void tlan_phy_monitor(unsigned long data) 2770 { 2771 struct net_device *dev = (struct net_device *) data; 2772 struct tlan_priv *priv = netdev_priv(dev); 2773 u16 phy; 2774 u16 phy_status; 2775 2776 phy = priv->phy[priv->phy_num]; 2777 2778 /* Get PHY status register */ 2779 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status); 2780 2781 /* Check if link has been lost */ 2782 if (!(phy_status & MII_GS_LINK)) { 2783 if (netif_carrier_ok(dev)) { 2784 printk(KERN_DEBUG "TLAN: %s has lost link\n", 2785 dev->name); 2786 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0); 2787 netif_carrier_off(dev); 2788 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) { 2789 /* power down internal PHY */ 2790 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK | 2791 MII_GC_ISOLATE; 2792 2793 tlan_mii_sync(dev->base_addr); 2794 tlan_mii_write_reg(dev, priv->phy[0], 2795 MII_GEN_CTL, data); 2796 /* set to external PHY */ 2797 priv->phy_num = 1; 2798 /* restart autonegotiation */ 2799 tlan_set_timer(dev, msecs_to_jiffies(400), 2800 TLAN_TIMER_PHY_PDOWN); 2801 return; 2802 } 2803 } 2804 } 2805 2806 /* Link restablished? */ 2807 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) { 2808 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); 2809 printk(KERN_DEBUG "TLAN: %s has reestablished link\n", 2810 dev->name); 2811 netif_carrier_on(dev); 2812 } 2813 priv->media_timer.expires = jiffies + HZ; 2814 add_timer(&priv->media_timer); 2815 } 2816 2817 2818 /***************************************************************************** 2819 ****************************************************************************** 2820 2821 ThunderLAN driver MII routines 2822 2823 these routines are based on the information in chap. 2 of the 2824 "ThunderLAN Programmer's Guide", pp. 15-24. 2825 2826 ****************************************************************************** 2827 *****************************************************************************/ 2828 2829 2830 /*************************************************************** 2831 * tlan_mii_read_reg 2832 * 2833 * Returns: 2834 * false if ack received ok 2835 * true if no ack received or other error 2836 * 2837 * Parms: 2838 * dev The device structure containing 2839 * The io address and interrupt count 2840 * for this device. 2841 * phy The address of the PHY to be queried. 2842 * reg The register whose contents are to be 2843 * retrieved. 2844 * val A pointer to a variable to store the 2845 * retrieved value. 2846 * 2847 * This function uses the TLAN's MII bus to retrieve the contents 2848 * of a given register on a PHY. It sends the appropriate info 2849 * and then reads the 16-bit register value from the MII bus via 2850 * the TLAN SIO register. 2851 * 2852 **************************************************************/ 2853 2854 static bool 2855 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val) 2856 { 2857 u8 nack; 2858 u16 sio, tmp; 2859 u32 i; 2860 bool err; 2861 int minten; 2862 struct tlan_priv *priv = netdev_priv(dev); 2863 unsigned long flags = 0; 2864 2865 err = false; 2866 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2867 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2868 2869 if (!in_irq()) 2870 spin_lock_irqsave(&priv->lock, flags); 2871 2872 tlan_mii_sync(dev->base_addr); 2873 2874 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 2875 if (minten) 2876 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 2877 2878 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 2879 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */ 2880 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 2881 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 2882 2883 2884 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */ 2885 2886 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */ 2887 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2888 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */ 2889 2890 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */ 2891 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */ 2892 if (nack) { /* no ACK, so fake it */ 2893 for (i = 0; i < 16; i++) { 2894 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2895 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2896 } 2897 tmp = 0xffff; 2898 err = true; 2899 } else { /* ACK, so read data */ 2900 for (tmp = 0, i = 0x8000; i; i >>= 1) { 2901 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2902 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio)) 2903 tmp |= i; 2904 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2905 } 2906 } 2907 2908 2909 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 2910 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2911 2912 if (minten) 2913 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 2914 2915 *val = tmp; 2916 2917 if (!in_irq()) 2918 spin_unlock_irqrestore(&priv->lock, flags); 2919 2920 return err; 2921 2922 } 2923 2924 2925 2926 2927 /*************************************************************** 2928 * tlan_mii_send_data 2929 * 2930 * Returns: 2931 * Nothing 2932 * Parms: 2933 * base_port The base IO port of the adapter in 2934 * question. 2935 * dev The address of the PHY to be queried. 2936 * data The value to be placed on the MII bus. 2937 * num_bits The number of bits in data that are to 2938 * be placed on the MII bus. 2939 * 2940 * This function sends on sequence of bits on the MII 2941 * configuration bus. 2942 * 2943 **************************************************************/ 2944 2945 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits) 2946 { 2947 u16 sio; 2948 u32 i; 2949 2950 if (num_bits == 0) 2951 return; 2952 2953 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2954 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2955 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio); 2956 2957 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) { 2958 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2959 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2960 if (data & i) 2961 tlan_set_bit(TLAN_NET_SIO_MDATA, sio); 2962 else 2963 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio); 2964 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2965 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2966 } 2967 2968 } 2969 2970 2971 2972 2973 /*************************************************************** 2974 * TLan_MiiSync 2975 * 2976 * Returns: 2977 * Nothing 2978 * Parms: 2979 * base_port The base IO port of the adapter in 2980 * question. 2981 * 2982 * This functions syncs all PHYs in terms of the MII configuration 2983 * bus. 2984 * 2985 **************************************************************/ 2986 2987 static void tlan_mii_sync(u16 base_port) 2988 { 2989 int i; 2990 u16 sio; 2991 2992 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2993 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2994 2995 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); 2996 for (i = 0; i < 32; i++) { 2997 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2998 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2999 } 3000 3001 } 3002 3003 3004 3005 3006 /*************************************************************** 3007 * tlan_mii_write_reg 3008 * 3009 * Returns: 3010 * Nothing 3011 * Parms: 3012 * dev The device structure for the device 3013 * to write to. 3014 * phy The address of the PHY to be written to. 3015 * reg The register whose contents are to be 3016 * written. 3017 * val The value to be written to the register. 3018 * 3019 * This function uses the TLAN's MII bus to write the contents of a 3020 * given register on a PHY. It sends the appropriate info and then 3021 * writes the 16-bit register value from the MII configuration bus 3022 * via the TLAN SIO register. 3023 * 3024 **************************************************************/ 3025 3026 static void 3027 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val) 3028 { 3029 u16 sio; 3030 int minten; 3031 unsigned long flags = 0; 3032 struct tlan_priv *priv = netdev_priv(dev); 3033 3034 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 3035 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 3036 3037 if (!in_irq()) 3038 spin_lock_irqsave(&priv->lock, flags); 3039 3040 tlan_mii_sync(dev->base_addr); 3041 3042 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 3043 if (minten) 3044 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 3045 3046 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 3047 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */ 3048 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 3049 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 3050 3051 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */ 3052 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */ 3053 3054 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 3055 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 3056 3057 if (minten) 3058 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 3059 3060 if (!in_irq()) 3061 spin_unlock_irqrestore(&priv->lock, flags); 3062 3063 } 3064 3065 3066 3067 3068 /***************************************************************************** 3069 ****************************************************************************** 3070 3071 ThunderLAN driver eeprom routines 3072 3073 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A 3074 EEPROM. these functions are based on information in microchip's 3075 data sheet. I don't know how well this functions will work with 3076 other Eeproms. 3077 3078 ****************************************************************************** 3079 *****************************************************************************/ 3080 3081 3082 /*************************************************************** 3083 * tlan_ee_send_start 3084 * 3085 * Returns: 3086 * Nothing 3087 * Parms: 3088 * io_base The IO port base address for the 3089 * TLAN device with the EEPROM to 3090 * use. 3091 * 3092 * This function sends a start cycle to an EEPROM attached 3093 * to a TLAN chip. 3094 * 3095 **************************************************************/ 3096 3097 static void tlan_ee_send_start(u16 io_base) 3098 { 3099 u16 sio; 3100 3101 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3102 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3103 3104 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3105 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3106 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3107 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3108 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3109 3110 } 3111 3112 3113 3114 3115 /*************************************************************** 3116 * tlan_ee_send_byte 3117 * 3118 * Returns: 3119 * If the correct ack was received, 0, otherwise 1 3120 * Parms: io_base The IO port base address for the 3121 * TLAN device with the EEPROM to 3122 * use. 3123 * data The 8 bits of information to 3124 * send to the EEPROM. 3125 * stop If TLAN_EEPROM_STOP is passed, a 3126 * stop cycle is sent after the 3127 * byte is sent after the ack is 3128 * read. 3129 * 3130 * This function sends a byte on the serial EEPROM line, 3131 * driving the clock to send each bit. The function then 3132 * reverses transmission direction and reads an acknowledge 3133 * bit. 3134 * 3135 **************************************************************/ 3136 3137 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop) 3138 { 3139 int err; 3140 u8 place; 3141 u16 sio; 3142 3143 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3144 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3145 3146 /* Assume clock is low, tx is enabled; */ 3147 for (place = 0x80; place != 0; place >>= 1) { 3148 if (place & data) 3149 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3150 else 3151 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3152 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3153 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3154 } 3155 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3156 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3157 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio); 3158 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3159 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3160 3161 if ((!err) && stop) { 3162 /* STOP, raise data while clock is high */ 3163 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3164 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3165 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3166 } 3167 3168 return err; 3169 3170 } 3171 3172 3173 3174 3175 /*************************************************************** 3176 * tlan_ee_receive_byte 3177 * 3178 * Returns: 3179 * Nothing 3180 * Parms: 3181 * io_base The IO port base address for the 3182 * TLAN device with the EEPROM to 3183 * use. 3184 * data An address to a char to hold the 3185 * data sent from the EEPROM. 3186 * stop If TLAN_EEPROM_STOP is passed, a 3187 * stop cycle is sent after the 3188 * byte is received, and no ack is 3189 * sent. 3190 * 3191 * This function receives 8 bits of data from the EEPROM 3192 * over the serial link. It then sends and ack bit, or no 3193 * ack and a stop bit. This function is used to retrieve 3194 * data after the address of a byte in the EEPROM has been 3195 * sent. 3196 * 3197 **************************************************************/ 3198 3199 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop) 3200 { 3201 u8 place; 3202 u16 sio; 3203 3204 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3205 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3206 *data = 0; 3207 3208 /* Assume clock is low, tx is enabled; */ 3209 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3210 for (place = 0x80; place; place >>= 1) { 3211 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3212 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio)) 3213 *data |= place; 3214 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3215 } 3216 3217 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3218 if (!stop) { 3219 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */ 3220 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3221 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3222 } else { 3223 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */ 3224 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3225 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3226 /* STOP, raise data while clock is high */ 3227 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3228 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3229 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3230 } 3231 3232 } 3233 3234 3235 3236 3237 /*************************************************************** 3238 * tlan_ee_read_byte 3239 * 3240 * Returns: 3241 * No error = 0, else, the stage at which the error 3242 * occurred. 3243 * Parms: 3244 * io_base The IO port base address for the 3245 * TLAN device with the EEPROM to 3246 * use. 3247 * ee_addr The address of the byte in the 3248 * EEPROM whose contents are to be 3249 * retrieved. 3250 * data An address to a char to hold the 3251 * data obtained from the EEPROM. 3252 * 3253 * This function reads a byte of information from an byte 3254 * cell in the EEPROM. 3255 * 3256 **************************************************************/ 3257 3258 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data) 3259 { 3260 int err; 3261 struct tlan_priv *priv = netdev_priv(dev); 3262 unsigned long flags = 0; 3263 int ret = 0; 3264 3265 spin_lock_irqsave(&priv->lock, flags); 3266 3267 tlan_ee_send_start(dev->base_addr); 3268 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK); 3269 if (err) { 3270 ret = 1; 3271 goto fail; 3272 } 3273 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK); 3274 if (err) { 3275 ret = 2; 3276 goto fail; 3277 } 3278 tlan_ee_send_start(dev->base_addr); 3279 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK); 3280 if (err) { 3281 ret = 3; 3282 goto fail; 3283 } 3284 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP); 3285 fail: 3286 spin_unlock_irqrestore(&priv->lock, flags); 3287 3288 return ret; 3289 3290 } 3291 3292 3293 3294