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