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