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