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