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