1 /******************************************************************************* 2 * 3 * Linux ThunderLAN Driver 4 * 5 * tlan.c 6 * by James Banks 7 * 8 * (C) 1997-1998 Caldera, Inc. 9 * (C) 1998 James Banks 10 * (C) 1999-2001 Torben Mathiasen 11 * (C) 2002 Samuel Chessman 12 * 13 * This software may be used and distributed according to the terms 14 * of the GNU General Public License, incorporated herein by reference. 15 * 16 ** Useful (if not required) reading: 17 * 18 * Texas Instruments, ThunderLAN Programmer's Guide, 19 * TI Literature Number SPWU013A 20 * available in PDF format from www.ti.com 21 * Level One, LXT901 and LXT970 Data Sheets 22 * available in PDF format from www.level1.com 23 * National Semiconductor, DP83840A Data Sheet 24 * available in PDF format from www.national.com 25 * Microchip Technology, 24C01A/02A/04A Data Sheet 26 * available in PDF format from www.microchip.com 27 * 28 ******************************************************************************/ 29 30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 31 32 #include <linux/hardirq.h> 33 #include <linux/module.h> 34 #include <linux/init.h> 35 #include <linux/interrupt.h> 36 #include <linux/ioport.h> 37 #include <linux/eisa.h> 38 #include <linux/pci.h> 39 #include <linux/dma-mapping.h> 40 #include <linux/netdevice.h> 41 #include <linux/etherdevice.h> 42 #include <linux/delay.h> 43 #include <linux/spinlock.h> 44 #include <linux/workqueue.h> 45 #include <linux/mii.h> 46 47 #include "tlan.h" 48 49 50 /* For removing EISA devices */ 51 static struct net_device *tlan_eisa_devices; 52 53 static int tlan_devices_installed; 54 55 /* Set speed, duplex and aui settings */ 56 static int aui[MAX_TLAN_BOARDS]; 57 static int duplex[MAX_TLAN_BOARDS]; 58 static int speed[MAX_TLAN_BOARDS]; 59 static int boards_found; 60 module_param_array(aui, int, NULL, 0); 61 module_param_array(duplex, int, NULL, 0); 62 module_param_array(speed, int, NULL, 0); 63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)"); 64 MODULE_PARM_DESC(duplex, 65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)"); 66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)"); 67 68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>"); 69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters"); 70 MODULE_LICENSE("GPL"); 71 72 73 /* Define this to enable Link beat monitoring */ 74 #undef MONITOR 75 76 /* Turn on debugging. See Documentation/networking/tlan.txt for details */ 77 static int debug; 78 module_param(debug, int, 0); 79 MODULE_PARM_DESC(debug, "ThunderLAN debug mask"); 80 81 static const char tlan_signature[] = "TLAN"; 82 static const char tlan_banner[] = "ThunderLAN driver v1.17\n"; 83 static int tlan_have_pci; 84 static int tlan_have_eisa; 85 86 static const char * const media[] = { 87 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD", 88 "100BaseTx-FD", "100BaseT4", NULL 89 }; 90 91 static struct board { 92 const char *device_label; 93 u32 flags; 94 u16 addr_ofs; 95 } board_info[] = { 96 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 97 { "Compaq Netelligent 10/100 TX PCI UTP", 98 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 99 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, 100 { "Compaq NetFlex-3/P", 101 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, 102 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 }, 103 { "Compaq Netelligent Integrated 10/100 TX UTP", 104 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 105 { "Compaq Netelligent Dual 10/100 TX PCI UTP", 106 TLAN_ADAPTER_NONE, 0x83 }, 107 { "Compaq Netelligent 10/100 TX Embedded UTP", 108 TLAN_ADAPTER_NONE, 0x83 }, 109 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 }, 110 { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 }, 111 { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xf8 }, 112 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, 113 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 }, 114 { "Compaq NetFlex-3/E", 115 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */ 116 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 }, 117 { "Compaq NetFlex-3/E", 118 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */ 119 }; 120 121 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = { 122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10, 123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100, 125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, 126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I, 127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, 128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER, 129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 }, 130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B, 131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, 132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI, 133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, 134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D, 135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 }, 136 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I, 137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 }, 138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183, 139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 }, 140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325, 141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 }, 142 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326, 143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 }, 144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100, 145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 }, 146 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2, 147 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 }, 148 { 0,} 149 }; 150 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl); 151 152 static void tlan_eisa_probe(void); 153 static void tlan_eisa_cleanup(void); 154 static int tlan_init(struct net_device *); 155 static int tlan_open(struct net_device *dev); 156 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *); 157 static irqreturn_t tlan_handle_interrupt(int, void *); 158 static int tlan_close(struct net_device *); 159 static struct net_device_stats *tlan_get_stats(struct net_device *); 160 static void tlan_set_multicast_list(struct net_device *); 161 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 162 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, 163 int irq, int rev, const struct pci_device_id *ent); 164 static void tlan_tx_timeout(struct net_device *dev); 165 static void tlan_tx_timeout_work(struct work_struct *work); 166 static int tlan_init_one(struct pci_dev *pdev, 167 const struct pci_device_id *ent); 168 169 static u32 tlan_handle_tx_eof(struct net_device *, u16); 170 static u32 tlan_handle_stat_overflow(struct net_device *, u16); 171 static u32 tlan_handle_rx_eof(struct net_device *, u16); 172 static u32 tlan_handle_dummy(struct net_device *, u16); 173 static u32 tlan_handle_tx_eoc(struct net_device *, u16); 174 static u32 tlan_handle_status_check(struct net_device *, u16); 175 static u32 tlan_handle_rx_eoc(struct net_device *, u16); 176 177 static void tlan_timer(unsigned long); 178 179 static void tlan_reset_lists(struct net_device *); 180 static void tlan_free_lists(struct net_device *); 181 static void tlan_print_dio(u16); 182 static void tlan_print_list(struct tlan_list *, char *, int); 183 static void tlan_read_and_clear_stats(struct net_device *, int); 184 static void tlan_reset_adapter(struct net_device *); 185 static void tlan_finish_reset(struct net_device *); 186 static void tlan_set_mac(struct net_device *, int areg, char *mac); 187 188 static void tlan_phy_print(struct net_device *); 189 static void tlan_phy_detect(struct net_device *); 190 static void tlan_phy_power_down(struct net_device *); 191 static void tlan_phy_power_up(struct net_device *); 192 static void tlan_phy_reset(struct net_device *); 193 static void tlan_phy_start_link(struct net_device *); 194 static void tlan_phy_finish_auto_neg(struct net_device *); 195 #ifdef MONITOR 196 static void tlan_phy_monitor(struct net_device *); 197 #endif 198 199 /* 200 static int tlan_phy_nop(struct net_device *); 201 static int tlan_phy_internal_check(struct net_device *); 202 static int tlan_phy_internal_service(struct net_device *); 203 static int tlan_phy_dp83840a_check(struct net_device *); 204 */ 205 206 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *); 207 static void tlan_mii_send_data(u16, u32, unsigned); 208 static void tlan_mii_sync(u16); 209 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16); 210 211 static void tlan_ee_send_start(u16); 212 static int tlan_ee_send_byte(u16, u8, int); 213 static void tlan_ee_receive_byte(u16, u8 *, int); 214 static int tlan_ee_read_byte(struct net_device *, u8, u8 *); 215 216 217 static inline void 218 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb) 219 { 220 unsigned long addr = (unsigned long)skb; 221 tag->buffer[9].address = addr; 222 tag->buffer[8].address = upper_32_bits(addr); 223 } 224 225 static inline struct sk_buff * 226 tlan_get_skb(const struct tlan_list *tag) 227 { 228 unsigned long addr; 229 230 addr = tag->buffer[9].address; 231 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16; 232 return (struct sk_buff *) addr; 233 } 234 235 static u32 236 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = { 237 NULL, 238 tlan_handle_tx_eof, 239 tlan_handle_stat_overflow, 240 tlan_handle_rx_eof, 241 tlan_handle_dummy, 242 tlan_handle_tx_eoc, 243 tlan_handle_status_check, 244 tlan_handle_rx_eoc 245 }; 246 247 static inline void 248 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type) 249 { 250 struct tlan_priv *priv = netdev_priv(dev); 251 unsigned long flags = 0; 252 253 if (!in_irq()) 254 spin_lock_irqsave(&priv->lock, flags); 255 if (priv->timer.function != NULL && 256 priv->timer_type != TLAN_TIMER_ACTIVITY) { 257 if (!in_irq()) 258 spin_unlock_irqrestore(&priv->lock, flags); 259 return; 260 } 261 priv->timer.function = tlan_timer; 262 if (!in_irq()) 263 spin_unlock_irqrestore(&priv->lock, flags); 264 265 priv->timer.data = (unsigned long) dev; 266 priv->timer_set_at = jiffies; 267 priv->timer_type = type; 268 mod_timer(&priv->timer, jiffies + ticks); 269 270 } 271 272 273 /***************************************************************************** 274 ****************************************************************************** 275 276 ThunderLAN driver primary functions 277 278 these functions are more or less common to all linux network drivers. 279 280 ****************************************************************************** 281 *****************************************************************************/ 282 283 284 285 286 287 /*************************************************************** 288 * tlan_remove_one 289 * 290 * Returns: 291 * Nothing 292 * Parms: 293 * None 294 * 295 * Goes through the TLanDevices list and frees the device 296 * structs and memory associated with each device (lists 297 * and buffers). It also ureserves the IO port regions 298 * associated with this device. 299 * 300 **************************************************************/ 301 302 303 static void __devexit tlan_remove_one(struct pci_dev *pdev) 304 { 305 struct net_device *dev = pci_get_drvdata(pdev); 306 struct tlan_priv *priv = netdev_priv(dev); 307 308 unregister_netdev(dev); 309 310 if (priv->dma_storage) { 311 pci_free_consistent(priv->pci_dev, 312 priv->dma_size, priv->dma_storage, 313 priv->dma_storage_dma); 314 } 315 316 #ifdef CONFIG_PCI 317 pci_release_regions(pdev); 318 #endif 319 320 free_netdev(dev); 321 322 pci_set_drvdata(pdev, NULL); 323 } 324 325 static void tlan_start(struct net_device *dev) 326 { 327 tlan_reset_lists(dev); 328 /* NOTE: It might not be necessary to read the stats before a 329 reset if you don't care what the values are. 330 */ 331 tlan_read_and_clear_stats(dev, TLAN_IGNORE); 332 tlan_reset_adapter(dev); 333 netif_wake_queue(dev); 334 } 335 336 static void tlan_stop(struct net_device *dev) 337 { 338 struct tlan_priv *priv = netdev_priv(dev); 339 340 tlan_read_and_clear_stats(dev, TLAN_RECORD); 341 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD); 342 /* Reset and power down phy */ 343 tlan_reset_adapter(dev); 344 if (priv->timer.function != NULL) { 345 del_timer_sync(&priv->timer); 346 priv->timer.function = NULL; 347 } 348 } 349 350 #ifdef CONFIG_PM 351 352 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state) 353 { 354 struct net_device *dev = pci_get_drvdata(pdev); 355 356 if (netif_running(dev)) 357 tlan_stop(dev); 358 359 netif_device_detach(dev); 360 pci_save_state(pdev); 361 pci_disable_device(pdev); 362 pci_wake_from_d3(pdev, false); 363 pci_set_power_state(pdev, PCI_D3hot); 364 365 return 0; 366 } 367 368 static int tlan_resume(struct pci_dev *pdev) 369 { 370 struct net_device *dev = pci_get_drvdata(pdev); 371 372 pci_set_power_state(pdev, PCI_D0); 373 pci_restore_state(pdev); 374 pci_enable_wake(pdev, 0, 0); 375 netif_device_attach(dev); 376 377 if (netif_running(dev)) 378 tlan_start(dev); 379 380 return 0; 381 } 382 383 #else /* CONFIG_PM */ 384 385 #define tlan_suspend NULL 386 #define tlan_resume NULL 387 388 #endif /* CONFIG_PM */ 389 390 391 static struct pci_driver tlan_driver = { 392 .name = "tlan", 393 .id_table = tlan_pci_tbl, 394 .probe = tlan_init_one, 395 .remove = __devexit_p(tlan_remove_one), 396 .suspend = tlan_suspend, 397 .resume = tlan_resume, 398 }; 399 400 static int __init tlan_probe(void) 401 { 402 int rc = -ENODEV; 403 404 pr_info("%s", tlan_banner); 405 406 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n"); 407 408 /* Use new style PCI probing. Now the kernel will 409 do most of this for us */ 410 rc = pci_register_driver(&tlan_driver); 411 412 if (rc != 0) { 413 pr_err("Could not register pci driver\n"); 414 goto err_out_pci_free; 415 } 416 417 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n"); 418 tlan_eisa_probe(); 419 420 pr_info("%d device%s installed, PCI: %d EISA: %d\n", 421 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s", 422 tlan_have_pci, tlan_have_eisa); 423 424 if (tlan_devices_installed == 0) { 425 rc = -ENODEV; 426 goto err_out_pci_unreg; 427 } 428 return 0; 429 430 err_out_pci_unreg: 431 pci_unregister_driver(&tlan_driver); 432 err_out_pci_free: 433 return rc; 434 } 435 436 437 static int __devinit tlan_init_one(struct pci_dev *pdev, 438 const struct pci_device_id *ent) 439 { 440 return tlan_probe1(pdev, -1, -1, 0, ent); 441 } 442 443 444 /* 445 *************************************************************** 446 * tlan_probe1 447 * 448 * Returns: 449 * 0 on success, error code on error 450 * Parms: 451 * none 452 * 453 * The name is lower case to fit in with all the rest of 454 * the netcard_probe names. This function looks for 455 * another TLan based adapter, setting it up with the 456 * allocated device struct if one is found. 457 * tlan_probe has been ported to the new net API and 458 * now allocates its own device structure. This function 459 * is also used by modules. 460 * 461 **************************************************************/ 462 463 static int __devinit tlan_probe1(struct pci_dev *pdev, 464 long ioaddr, int irq, int rev, 465 const struct pci_device_id *ent) 466 { 467 468 struct net_device *dev; 469 struct tlan_priv *priv; 470 u16 device_id; 471 int reg, rc = -ENODEV; 472 473 #ifdef CONFIG_PCI 474 if (pdev) { 475 rc = pci_enable_device(pdev); 476 if (rc) 477 return rc; 478 479 rc = pci_request_regions(pdev, tlan_signature); 480 if (rc) { 481 pr_err("Could not reserve IO regions\n"); 482 goto err_out; 483 } 484 } 485 #endif /* CONFIG_PCI */ 486 487 dev = alloc_etherdev(sizeof(struct tlan_priv)); 488 if (dev == NULL) { 489 rc = -ENOMEM; 490 goto err_out_regions; 491 } 492 SET_NETDEV_DEV(dev, &pdev->dev); 493 494 priv = netdev_priv(dev); 495 496 priv->pci_dev = pdev; 497 priv->dev = dev; 498 499 /* Is this a PCI device? */ 500 if (pdev) { 501 u32 pci_io_base = 0; 502 503 priv->adapter = &board_info[ent->driver_data]; 504 505 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 506 if (rc) { 507 pr_err("No suitable PCI mapping available\n"); 508 goto err_out_free_dev; 509 } 510 511 for (reg = 0; reg <= 5; reg++) { 512 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) { 513 pci_io_base = pci_resource_start(pdev, reg); 514 TLAN_DBG(TLAN_DEBUG_GNRL, 515 "IO mapping is available at %x.\n", 516 pci_io_base); 517 break; 518 } 519 } 520 if (!pci_io_base) { 521 pr_err("No IO mappings available\n"); 522 rc = -EIO; 523 goto err_out_free_dev; 524 } 525 526 dev->base_addr = pci_io_base; 527 dev->irq = pdev->irq; 528 priv->adapter_rev = pdev->revision; 529 pci_set_master(pdev); 530 pci_set_drvdata(pdev, dev); 531 532 } else { /* EISA card */ 533 /* This is a hack. We need to know which board structure 534 * is suited for this adapter */ 535 device_id = inw(ioaddr + EISA_ID2); 536 priv->is_eisa = 1; 537 if (device_id == 0x20F1) { 538 priv->adapter = &board_info[13]; /* NetFlex-3/E */ 539 priv->adapter_rev = 23; /* TLAN 2.3 */ 540 } else { 541 priv->adapter = &board_info[14]; 542 priv->adapter_rev = 10; /* TLAN 1.0 */ 543 } 544 dev->base_addr = ioaddr; 545 dev->irq = irq; 546 } 547 548 /* Kernel parameters */ 549 if (dev->mem_start) { 550 priv->aui = dev->mem_start & 0x01; 551 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0 552 : (dev->mem_start & 0x06) >> 1; 553 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0 554 : (dev->mem_start & 0x18) >> 3; 555 556 if (priv->speed == 0x1) 557 priv->speed = TLAN_SPEED_10; 558 else if (priv->speed == 0x2) 559 priv->speed = TLAN_SPEED_100; 560 561 debug = priv->debug = dev->mem_end; 562 } else { 563 priv->aui = aui[boards_found]; 564 priv->speed = speed[boards_found]; 565 priv->duplex = duplex[boards_found]; 566 priv->debug = debug; 567 } 568 569 /* This will be used when we get an adapter error from 570 * within our irq handler */ 571 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work); 572 573 spin_lock_init(&priv->lock); 574 575 rc = tlan_init(dev); 576 if (rc) { 577 pr_err("Could not set up device\n"); 578 goto err_out_free_dev; 579 } 580 581 rc = register_netdev(dev); 582 if (rc) { 583 pr_err("Could not register device\n"); 584 goto err_out_uninit; 585 } 586 587 588 tlan_devices_installed++; 589 boards_found++; 590 591 /* pdev is NULL if this is an EISA device */ 592 if (pdev) 593 tlan_have_pci++; 594 else { 595 priv->next_device = tlan_eisa_devices; 596 tlan_eisa_devices = dev; 597 tlan_have_eisa++; 598 } 599 600 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n", 601 (int)dev->irq, 602 (int)dev->base_addr, 603 priv->adapter->device_label, 604 priv->adapter_rev); 605 return 0; 606 607 err_out_uninit: 608 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage, 609 priv->dma_storage_dma); 610 err_out_free_dev: 611 free_netdev(dev); 612 err_out_regions: 613 #ifdef CONFIG_PCI 614 if (pdev) 615 pci_release_regions(pdev); 616 #endif 617 err_out: 618 if (pdev) 619 pci_disable_device(pdev); 620 return rc; 621 } 622 623 624 static void tlan_eisa_cleanup(void) 625 { 626 struct net_device *dev; 627 struct tlan_priv *priv; 628 629 while (tlan_have_eisa) { 630 dev = tlan_eisa_devices; 631 priv = netdev_priv(dev); 632 if (priv->dma_storage) { 633 pci_free_consistent(priv->pci_dev, priv->dma_size, 634 priv->dma_storage, 635 priv->dma_storage_dma); 636 } 637 release_region(dev->base_addr, 0x10); 638 unregister_netdev(dev); 639 tlan_eisa_devices = priv->next_device; 640 free_netdev(dev); 641 tlan_have_eisa--; 642 } 643 } 644 645 646 static void __exit tlan_exit(void) 647 { 648 pci_unregister_driver(&tlan_driver); 649 650 if (tlan_have_eisa) 651 tlan_eisa_cleanup(); 652 653 } 654 655 656 /* Module loading/unloading */ 657 module_init(tlan_probe); 658 module_exit(tlan_exit); 659 660 661 662 /************************************************************** 663 * tlan_eisa_probe 664 * 665 * Returns: 0 on success, 1 otherwise 666 * 667 * Parms: None 668 * 669 * 670 * This functions probes for EISA devices and calls 671 * TLan_probe1 when one is found. 672 * 673 *************************************************************/ 674 675 static void __init tlan_eisa_probe(void) 676 { 677 long ioaddr; 678 int rc = -ENODEV; 679 int irq; 680 u16 device_id; 681 682 if (!EISA_bus) { 683 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n"); 684 return; 685 } 686 687 /* Loop through all slots of the EISA bus */ 688 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) { 689 690 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n", 691 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID)); 692 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n", 693 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2)); 694 695 696 TLAN_DBG(TLAN_DEBUG_PROBE, 697 "Probing for EISA adapter at IO: 0x%4x : ", 698 (int) ioaddr); 699 if (request_region(ioaddr, 0x10, tlan_signature) == NULL) 700 goto out; 701 702 if (inw(ioaddr + EISA_ID) != 0x110E) { 703 release_region(ioaddr, 0x10); 704 goto out; 705 } 706 707 device_id = inw(ioaddr + EISA_ID2); 708 if (device_id != 0x20F1 && device_id != 0x40F1) { 709 release_region(ioaddr, 0x10); 710 goto out; 711 } 712 713 /* check if adapter is enabled */ 714 if (inb(ioaddr + EISA_CR) != 0x1) { 715 release_region(ioaddr, 0x10); 716 goto out2; 717 } 718 719 if (debug == 0x10) 720 pr_info("Found one\n"); 721 722 723 /* Get irq from board */ 724 switch (inb(ioaddr + 0xcc0)) { 725 case(0x10): 726 irq = 5; 727 break; 728 case(0x20): 729 irq = 9; 730 break; 731 case(0x40): 732 irq = 10; 733 break; 734 case(0x80): 735 irq = 11; 736 break; 737 default: 738 goto out; 739 } 740 741 742 /* Setup the newly found eisa adapter */ 743 rc = tlan_probe1(NULL, ioaddr, irq, 744 12, NULL); 745 continue; 746 747 out: 748 if (debug == 0x10) 749 pr_info("None found\n"); 750 continue; 751 752 out2: 753 if (debug == 0x10) 754 pr_info("Card found but it is not enabled, skipping\n"); 755 continue; 756 757 } 758 759 } 760 761 #ifdef CONFIG_NET_POLL_CONTROLLER 762 static void tlan_poll(struct net_device *dev) 763 { 764 disable_irq(dev->irq); 765 tlan_handle_interrupt(dev->irq, dev); 766 enable_irq(dev->irq); 767 } 768 #endif 769 770 static const struct net_device_ops tlan_netdev_ops = { 771 .ndo_open = tlan_open, 772 .ndo_stop = tlan_close, 773 .ndo_start_xmit = tlan_start_tx, 774 .ndo_tx_timeout = tlan_tx_timeout, 775 .ndo_get_stats = tlan_get_stats, 776 .ndo_set_rx_mode = tlan_set_multicast_list, 777 .ndo_do_ioctl = tlan_ioctl, 778 .ndo_change_mtu = eth_change_mtu, 779 .ndo_set_mac_address = eth_mac_addr, 780 .ndo_validate_addr = eth_validate_addr, 781 #ifdef CONFIG_NET_POLL_CONTROLLER 782 .ndo_poll_controller = tlan_poll, 783 #endif 784 }; 785 786 787 788 /*************************************************************** 789 * tlan_init 790 * 791 * Returns: 792 * 0 on success, error code otherwise. 793 * Parms: 794 * dev The structure of the device to be 795 * init'ed. 796 * 797 * This function completes the initialization of the 798 * device structure and driver. It reserves the IO 799 * addresses, allocates memory for the lists and bounce 800 * buffers, retrieves the MAC address from the eeprom 801 * and assignes the device's methods. 802 * 803 **************************************************************/ 804 805 static int tlan_init(struct net_device *dev) 806 { 807 int dma_size; 808 int err; 809 int i; 810 struct tlan_priv *priv; 811 812 priv = netdev_priv(dev); 813 814 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS) 815 * (sizeof(struct tlan_list)); 816 priv->dma_storage = pci_alloc_consistent(priv->pci_dev, 817 dma_size, 818 &priv->dma_storage_dma); 819 priv->dma_size = dma_size; 820 821 if (priv->dma_storage == NULL) { 822 pr_err("Could not allocate lists and buffers for %s\n", 823 dev->name); 824 return -ENOMEM; 825 } 826 memset(priv->dma_storage, 0, dma_size); 827 priv->rx_list = (struct tlan_list *) 828 ALIGN((unsigned long)priv->dma_storage, 8); 829 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8); 830 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS; 831 priv->tx_list_dma = 832 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS; 833 834 err = 0; 835 for (i = 0; i < 6 ; i++) 836 err |= tlan_ee_read_byte(dev, 837 (u8) priv->adapter->addr_ofs + i, 838 (u8 *) &dev->dev_addr[i]); 839 if (err) { 840 pr_err("%s: Error reading MAC from eeprom: %d\n", 841 dev->name, err); 842 } 843 dev->addr_len = 6; 844 845 netif_carrier_off(dev); 846 847 /* Device methods */ 848 dev->netdev_ops = &tlan_netdev_ops; 849 dev->watchdog_timeo = TX_TIMEOUT; 850 851 return 0; 852 853 } 854 855 856 857 858 /*************************************************************** 859 * tlan_open 860 * 861 * Returns: 862 * 0 on success, error code otherwise. 863 * Parms: 864 * dev Structure of device to be opened. 865 * 866 * This routine puts the driver and TLAN adapter in a 867 * state where it is ready to send and receive packets. 868 * It allocates the IRQ, resets and brings the adapter 869 * out of reset, and allows interrupts. It also delays 870 * the startup for autonegotiation or sends a Rx GO 871 * command to the adapter, as appropriate. 872 * 873 **************************************************************/ 874 875 static int tlan_open(struct net_device *dev) 876 { 877 struct tlan_priv *priv = netdev_priv(dev); 878 int err; 879 880 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION); 881 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED, 882 dev->name, dev); 883 884 if (err) { 885 netdev_err(dev, "Cannot open because IRQ %d is already in use\n", 886 dev->irq); 887 return err; 888 } 889 890 init_timer(&priv->timer); 891 892 tlan_start(dev); 893 894 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n", 895 dev->name, priv->tlan_rev); 896 897 return 0; 898 899 } 900 901 902 903 /************************************************************** 904 * tlan_ioctl 905 * 906 * Returns: 907 * 0 on success, error code otherwise 908 * Params: 909 * dev structure of device to receive ioctl. 910 * 911 * rq ifreq structure to hold userspace data. 912 * 913 * cmd ioctl command. 914 * 915 * 916 *************************************************************/ 917 918 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 919 { 920 struct tlan_priv *priv = netdev_priv(dev); 921 struct mii_ioctl_data *data = if_mii(rq); 922 u32 phy = priv->phy[priv->phy_num]; 923 924 if (!priv->phy_online) 925 return -EAGAIN; 926 927 switch (cmd) { 928 case SIOCGMIIPHY: /* get address of MII PHY in use. */ 929 data->phy_id = phy; 930 931 932 case SIOCGMIIREG: /* read MII PHY register. */ 933 tlan_mii_read_reg(dev, data->phy_id & 0x1f, 934 data->reg_num & 0x1f, &data->val_out); 935 return 0; 936 937 938 case SIOCSMIIREG: /* write MII PHY register. */ 939 tlan_mii_write_reg(dev, data->phy_id & 0x1f, 940 data->reg_num & 0x1f, data->val_in); 941 return 0; 942 default: 943 return -EOPNOTSUPP; 944 } 945 } 946 947 948 /*************************************************************** 949 * tlan_tx_timeout 950 * 951 * Returns: nothing 952 * 953 * Params: 954 * dev structure of device which timed out 955 * during transmit. 956 * 957 **************************************************************/ 958 959 static void tlan_tx_timeout(struct net_device *dev) 960 { 961 962 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name); 963 964 /* Ok so we timed out, lets see what we can do about it...*/ 965 tlan_free_lists(dev); 966 tlan_reset_lists(dev); 967 tlan_read_and_clear_stats(dev, TLAN_IGNORE); 968 tlan_reset_adapter(dev); 969 dev->trans_start = jiffies; /* prevent tx timeout */ 970 netif_wake_queue(dev); 971 972 } 973 974 975 /*************************************************************** 976 * tlan_tx_timeout_work 977 * 978 * Returns: nothing 979 * 980 * Params: 981 * work work item of device which timed out 982 * 983 **************************************************************/ 984 985 static void tlan_tx_timeout_work(struct work_struct *work) 986 { 987 struct tlan_priv *priv = 988 container_of(work, struct tlan_priv, tlan_tqueue); 989 990 tlan_tx_timeout(priv->dev); 991 } 992 993 994 995 /*************************************************************** 996 * tlan_start_tx 997 * 998 * Returns: 999 * 0 on success, non-zero on failure. 1000 * Parms: 1001 * skb A pointer to the sk_buff containing the 1002 * frame to be sent. 1003 * dev The device to send the data on. 1004 * 1005 * This function adds a frame to the Tx list to be sent 1006 * ASAP. First it verifies that the adapter is ready and 1007 * there is room in the queue. Then it sets up the next 1008 * available list, copies the frame to the corresponding 1009 * buffer. If the adapter Tx channel is idle, it gives 1010 * the adapter a Tx Go command on the list, otherwise it 1011 * sets the forward address of the previous list to point 1012 * to this one. Then it frees the sk_buff. 1013 * 1014 **************************************************************/ 1015 1016 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev) 1017 { 1018 struct tlan_priv *priv = netdev_priv(dev); 1019 dma_addr_t tail_list_phys; 1020 struct tlan_list *tail_list; 1021 unsigned long flags; 1022 unsigned int txlen; 1023 1024 if (!priv->phy_online) { 1025 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n", 1026 dev->name); 1027 dev_kfree_skb_any(skb); 1028 return NETDEV_TX_OK; 1029 } 1030 1031 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE)) 1032 return NETDEV_TX_OK; 1033 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE); 1034 1035 tail_list = priv->tx_list + priv->tx_tail; 1036 tail_list_phys = 1037 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail; 1038 1039 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) { 1040 TLAN_DBG(TLAN_DEBUG_TX, 1041 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n", 1042 dev->name, priv->tx_head, priv->tx_tail); 1043 netif_stop_queue(dev); 1044 priv->tx_busy_count++; 1045 return NETDEV_TX_BUSY; 1046 } 1047 1048 tail_list->forward = 0; 1049 1050 tail_list->buffer[0].address = pci_map_single(priv->pci_dev, 1051 skb->data, txlen, 1052 PCI_DMA_TODEVICE); 1053 tlan_store_skb(tail_list, skb); 1054 1055 tail_list->frame_size = (u16) txlen; 1056 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen; 1057 tail_list->buffer[1].count = 0; 1058 tail_list->buffer[1].address = 0; 1059 1060 spin_lock_irqsave(&priv->lock, flags); 1061 tail_list->c_stat = TLAN_CSTAT_READY; 1062 if (!priv->tx_in_progress) { 1063 priv->tx_in_progress = 1; 1064 TLAN_DBG(TLAN_DEBUG_TX, 1065 "TRANSMIT: Starting TX on buffer %d\n", 1066 priv->tx_tail); 1067 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM); 1068 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD); 1069 } else { 1070 TLAN_DBG(TLAN_DEBUG_TX, 1071 "TRANSMIT: Adding buffer %d to TX channel\n", 1072 priv->tx_tail); 1073 if (priv->tx_tail == 0) { 1074 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward 1075 = tail_list_phys; 1076 } else { 1077 (priv->tx_list + (priv->tx_tail - 1))->forward 1078 = tail_list_phys; 1079 } 1080 } 1081 spin_unlock_irqrestore(&priv->lock, flags); 1082 1083 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS); 1084 1085 return NETDEV_TX_OK; 1086 1087 } 1088 1089 1090 1091 1092 /*************************************************************** 1093 * tlan_handle_interrupt 1094 * 1095 * Returns: 1096 * Nothing 1097 * Parms: 1098 * irq The line on which the interrupt 1099 * occurred. 1100 * dev_id A pointer to the device assigned to 1101 * this irq line. 1102 * 1103 * This function handles an interrupt generated by its 1104 * assigned TLAN adapter. The function deactivates 1105 * interrupts on its adapter, records the type of 1106 * interrupt, executes the appropriate subhandler, and 1107 * acknowdges the interrupt to the adapter (thus 1108 * re-enabling adapter interrupts. 1109 * 1110 **************************************************************/ 1111 1112 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id) 1113 { 1114 struct net_device *dev = dev_id; 1115 struct tlan_priv *priv = netdev_priv(dev); 1116 u16 host_int; 1117 u16 type; 1118 1119 spin_lock(&priv->lock); 1120 1121 host_int = inw(dev->base_addr + TLAN_HOST_INT); 1122 type = (host_int & TLAN_HI_IT_MASK) >> 2; 1123 if (type) { 1124 u32 ack; 1125 u32 host_cmd; 1126 1127 outw(host_int, dev->base_addr + TLAN_HOST_INT); 1128 ack = tlan_int_vector[type](dev, host_int); 1129 1130 if (ack) { 1131 host_cmd = TLAN_HC_ACK | ack | (type << 18); 1132 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD); 1133 } 1134 } 1135 1136 spin_unlock(&priv->lock); 1137 1138 return IRQ_RETVAL(type); 1139 } 1140 1141 1142 1143 1144 /*************************************************************** 1145 * tlan_close 1146 * 1147 * Returns: 1148 * An error code. 1149 * Parms: 1150 * dev The device structure of the device to 1151 * close. 1152 * 1153 * This function shuts down the adapter. It records any 1154 * stats, puts the adapter into reset state, deactivates 1155 * its time as needed, and frees the irq it is using. 1156 * 1157 **************************************************************/ 1158 1159 static int tlan_close(struct net_device *dev) 1160 { 1161 struct tlan_priv *priv = netdev_priv(dev); 1162 1163 priv->neg_be_verbose = 0; 1164 tlan_stop(dev); 1165 1166 free_irq(dev->irq, dev); 1167 tlan_free_lists(dev); 1168 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name); 1169 1170 return 0; 1171 1172 } 1173 1174 1175 1176 1177 /*************************************************************** 1178 * tlan_get_stats 1179 * 1180 * Returns: 1181 * A pointer to the device's statistics structure. 1182 * Parms: 1183 * dev The device structure to return the 1184 * stats for. 1185 * 1186 * This function updates the devices statistics by reading 1187 * the TLAN chip's onboard registers. Then it returns the 1188 * address of the statistics structure. 1189 * 1190 **************************************************************/ 1191 1192 static struct net_device_stats *tlan_get_stats(struct net_device *dev) 1193 { 1194 struct tlan_priv *priv = netdev_priv(dev); 1195 int i; 1196 1197 /* Should only read stats if open ? */ 1198 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1199 1200 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name, 1201 priv->rx_eoc_count); 1202 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name, 1203 priv->tx_busy_count); 1204 if (debug & TLAN_DEBUG_GNRL) { 1205 tlan_print_dio(dev->base_addr); 1206 tlan_phy_print(dev); 1207 } 1208 if (debug & TLAN_DEBUG_LIST) { 1209 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) 1210 tlan_print_list(priv->rx_list + i, "RX", i); 1211 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) 1212 tlan_print_list(priv->tx_list + i, "TX", i); 1213 } 1214 1215 return &dev->stats; 1216 1217 } 1218 1219 1220 1221 1222 /*************************************************************** 1223 * tlan_set_multicast_list 1224 * 1225 * Returns: 1226 * Nothing 1227 * Parms: 1228 * dev The device structure to set the 1229 * multicast list for. 1230 * 1231 * This function sets the TLAN adaptor to various receive 1232 * modes. If the IFF_PROMISC flag is set, promiscuous 1233 * mode is acitviated. Otherwise, promiscuous mode is 1234 * turned off. If the IFF_ALLMULTI flag is set, then 1235 * the hash table is set to receive all group addresses. 1236 * Otherwise, the first three multicast addresses are 1237 * stored in AREG_1-3, and the rest are selected via the 1238 * hash table, as necessary. 1239 * 1240 **************************************************************/ 1241 1242 static void tlan_set_multicast_list(struct net_device *dev) 1243 { 1244 struct netdev_hw_addr *ha; 1245 u32 hash1 = 0; 1246 u32 hash2 = 0; 1247 int i; 1248 u32 offset; 1249 u8 tmp; 1250 1251 if (dev->flags & IFF_PROMISC) { 1252 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1253 tlan_dio_write8(dev->base_addr, 1254 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF); 1255 } else { 1256 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD); 1257 tlan_dio_write8(dev->base_addr, 1258 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF); 1259 if (dev->flags & IFF_ALLMULTI) { 1260 for (i = 0; i < 3; i++) 1261 tlan_set_mac(dev, i + 1, NULL); 1262 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, 1263 0xffffffff); 1264 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, 1265 0xffffffff); 1266 } else { 1267 i = 0; 1268 netdev_for_each_mc_addr(ha, dev) { 1269 if (i < 3) { 1270 tlan_set_mac(dev, i + 1, 1271 (char *) &ha->addr); 1272 } else { 1273 offset = 1274 tlan_hash_func((u8 *)&ha->addr); 1275 if (offset < 32) 1276 hash1 |= (1 << offset); 1277 else 1278 hash2 |= (1 << (offset - 32)); 1279 } 1280 i++; 1281 } 1282 for ( ; i < 3; i++) 1283 tlan_set_mac(dev, i + 1, NULL); 1284 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1); 1285 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2); 1286 } 1287 } 1288 1289 } 1290 1291 1292 1293 /***************************************************************************** 1294 ****************************************************************************** 1295 1296 ThunderLAN driver interrupt vectors and table 1297 1298 please see chap. 4, "Interrupt Handling" of the "ThunderLAN 1299 Programmer's Guide" for more informations on handling interrupts 1300 generated by TLAN based adapters. 1301 1302 ****************************************************************************** 1303 *****************************************************************************/ 1304 1305 1306 1307 1308 /*************************************************************** 1309 * tlan_handle_tx_eof 1310 * 1311 * Returns: 1312 * 1 1313 * Parms: 1314 * dev Device assigned the IRQ that was 1315 * raised. 1316 * host_int The contents of the HOST_INT 1317 * port. 1318 * 1319 * This function handles Tx EOF interrupts which are raised 1320 * by the adapter when it has completed sending the 1321 * contents of a buffer. If detemines which list/buffer 1322 * was completed and resets it. If the buffer was the last 1323 * in the channel (EOC), then the function checks to see if 1324 * another buffer is ready to send, and if so, sends a Tx 1325 * Go command. Finally, the driver activates/continues the 1326 * activity LED. 1327 * 1328 **************************************************************/ 1329 1330 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int) 1331 { 1332 struct tlan_priv *priv = netdev_priv(dev); 1333 int eoc = 0; 1334 struct tlan_list *head_list; 1335 dma_addr_t head_list_phys; 1336 u32 ack = 0; 1337 u16 tmp_c_stat; 1338 1339 TLAN_DBG(TLAN_DEBUG_TX, 1340 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n", 1341 priv->tx_head, priv->tx_tail); 1342 head_list = priv->tx_list + priv->tx_head; 1343 1344 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1345 && (ack < 255)) { 1346 struct sk_buff *skb = tlan_get_skb(head_list); 1347 1348 ack++; 1349 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address, 1350 max(skb->len, 1351 (unsigned int)TLAN_MIN_FRAME_SIZE), 1352 PCI_DMA_TODEVICE); 1353 dev_kfree_skb_any(skb); 1354 head_list->buffer[8].address = 0; 1355 head_list->buffer[9].address = 0; 1356 1357 if (tmp_c_stat & TLAN_CSTAT_EOC) 1358 eoc = 1; 1359 1360 dev->stats.tx_bytes += head_list->frame_size; 1361 1362 head_list->c_stat = TLAN_CSTAT_UNUSED; 1363 netif_start_queue(dev); 1364 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS); 1365 head_list = priv->tx_list + priv->tx_head; 1366 } 1367 1368 if (!ack) 1369 netdev_info(dev, 1370 "Received interrupt for uncompleted TX frame\n"); 1371 1372 if (eoc) { 1373 TLAN_DBG(TLAN_DEBUG_TX, 1374 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n", 1375 priv->tx_head, priv->tx_tail); 1376 head_list = priv->tx_list + priv->tx_head; 1377 head_list_phys = priv->tx_list_dma 1378 + sizeof(struct tlan_list)*priv->tx_head; 1379 if ((head_list->c_stat & TLAN_CSTAT_READY) 1380 == TLAN_CSTAT_READY) { 1381 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1382 ack |= TLAN_HC_GO; 1383 } else { 1384 priv->tx_in_progress = 0; 1385 } 1386 } 1387 1388 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1389 tlan_dio_write8(dev->base_addr, 1390 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1391 if (priv->timer.function == NULL) { 1392 priv->timer.function = tlan_timer; 1393 priv->timer.data = (unsigned long) dev; 1394 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1395 priv->timer_set_at = jiffies; 1396 priv->timer_type = TLAN_TIMER_ACTIVITY; 1397 add_timer(&priv->timer); 1398 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1399 priv->timer_set_at = jiffies; 1400 } 1401 } 1402 1403 return ack; 1404 1405 } 1406 1407 1408 1409 1410 /*************************************************************** 1411 * TLan_HandleStatOverflow 1412 * 1413 * Returns: 1414 * 1 1415 * Parms: 1416 * dev Device assigned the IRQ that was 1417 * raised. 1418 * host_int The contents of the HOST_INT 1419 * port. 1420 * 1421 * This function handles the Statistics Overflow interrupt 1422 * which means that one or more of the TLAN statistics 1423 * registers has reached 1/2 capacity and needs to be read. 1424 * 1425 **************************************************************/ 1426 1427 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int) 1428 { 1429 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1430 1431 return 1; 1432 1433 } 1434 1435 1436 1437 1438 /*************************************************************** 1439 * TLan_HandleRxEOF 1440 * 1441 * Returns: 1442 * 1 1443 * Parms: 1444 * dev Device assigned the IRQ that was 1445 * raised. 1446 * host_int The contents of the HOST_INT 1447 * port. 1448 * 1449 * This function handles the Rx EOF interrupt which 1450 * indicates a frame has been received by the adapter from 1451 * the net and the frame has been transferred to memory. 1452 * The function determines the bounce buffer the frame has 1453 * been loaded into, creates a new sk_buff big enough to 1454 * hold the frame, and sends it to protocol stack. It 1455 * then resets the used buffer and appends it to the end 1456 * of the list. If the frame was the last in the Rx 1457 * channel (EOC), the function restarts the receive channel 1458 * by sending an Rx Go command to the adapter. Then it 1459 * activates/continues the activity LED. 1460 * 1461 **************************************************************/ 1462 1463 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int) 1464 { 1465 struct tlan_priv *priv = netdev_priv(dev); 1466 u32 ack = 0; 1467 int eoc = 0; 1468 struct tlan_list *head_list; 1469 struct sk_buff *skb; 1470 struct tlan_list *tail_list; 1471 u16 tmp_c_stat; 1472 dma_addr_t head_list_phys; 1473 1474 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n", 1475 priv->rx_head, priv->rx_tail); 1476 head_list = priv->rx_list + priv->rx_head; 1477 head_list_phys = 1478 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head; 1479 1480 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) 1481 && (ack < 255)) { 1482 dma_addr_t frame_dma = head_list->buffer[0].address; 1483 u32 frame_size = head_list->frame_size; 1484 struct sk_buff *new_skb; 1485 1486 ack++; 1487 if (tmp_c_stat & TLAN_CSTAT_EOC) 1488 eoc = 1; 1489 1490 new_skb = netdev_alloc_skb_ip_align(dev, 1491 TLAN_MAX_FRAME_SIZE + 5); 1492 if (!new_skb) 1493 goto drop_and_reuse; 1494 1495 skb = tlan_get_skb(head_list); 1496 pci_unmap_single(priv->pci_dev, frame_dma, 1497 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1498 skb_put(skb, frame_size); 1499 1500 dev->stats.rx_bytes += frame_size; 1501 1502 skb->protocol = eth_type_trans(skb, dev); 1503 netif_rx(skb); 1504 1505 head_list->buffer[0].address = 1506 pci_map_single(priv->pci_dev, new_skb->data, 1507 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); 1508 1509 tlan_store_skb(head_list, new_skb); 1510 drop_and_reuse: 1511 head_list->forward = 0; 1512 head_list->c_stat = 0; 1513 tail_list = priv->rx_list + priv->rx_tail; 1514 tail_list->forward = head_list_phys; 1515 1516 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS); 1517 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS); 1518 head_list = priv->rx_list + priv->rx_head; 1519 head_list_phys = priv->rx_list_dma 1520 + sizeof(struct tlan_list)*priv->rx_head; 1521 } 1522 1523 if (!ack) 1524 netdev_info(dev, 1525 "Received interrupt for uncompleted RX frame\n"); 1526 1527 1528 if (eoc) { 1529 TLAN_DBG(TLAN_DEBUG_RX, 1530 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n", 1531 priv->rx_head, priv->rx_tail); 1532 head_list = priv->rx_list + priv->rx_head; 1533 head_list_phys = priv->rx_list_dma 1534 + sizeof(struct tlan_list)*priv->rx_head; 1535 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1536 ack |= TLAN_HC_GO | TLAN_HC_RT; 1537 priv->rx_eoc_count++; 1538 } 1539 1540 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { 1541 tlan_dio_write8(dev->base_addr, 1542 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); 1543 if (priv->timer.function == NULL) { 1544 priv->timer.function = tlan_timer; 1545 priv->timer.data = (unsigned long) dev; 1546 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; 1547 priv->timer_set_at = jiffies; 1548 priv->timer_type = TLAN_TIMER_ACTIVITY; 1549 add_timer(&priv->timer); 1550 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { 1551 priv->timer_set_at = jiffies; 1552 } 1553 } 1554 1555 return ack; 1556 1557 } 1558 1559 1560 1561 1562 /*************************************************************** 1563 * tlan_handle_dummy 1564 * 1565 * Returns: 1566 * 1 1567 * Parms: 1568 * dev Device assigned the IRQ that was 1569 * raised. 1570 * host_int The contents of the HOST_INT 1571 * port. 1572 * 1573 * This function handles the Dummy interrupt, which is 1574 * raised whenever a test interrupt is generated by setting 1575 * the Req_Int bit of HOST_CMD to 1. 1576 * 1577 **************************************************************/ 1578 1579 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int) 1580 { 1581 netdev_info(dev, "Test interrupt\n"); 1582 return 1; 1583 1584 } 1585 1586 1587 1588 1589 /*************************************************************** 1590 * tlan_handle_tx_eoc 1591 * 1592 * Returns: 1593 * 1 1594 * Parms: 1595 * dev Device assigned the IRQ that was 1596 * raised. 1597 * host_int The contents of the HOST_INT 1598 * port. 1599 * 1600 * This driver is structured to determine EOC occurrences by 1601 * reading the CSTAT member of the list structure. Tx EOC 1602 * interrupts are disabled via the DIO INTDIS register. 1603 * However, TLAN chips before revision 3.0 didn't have this 1604 * functionality, so process EOC events if this is the 1605 * case. 1606 * 1607 **************************************************************/ 1608 1609 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int) 1610 { 1611 struct tlan_priv *priv = netdev_priv(dev); 1612 struct tlan_list *head_list; 1613 dma_addr_t head_list_phys; 1614 u32 ack = 1; 1615 1616 host_int = 0; 1617 if (priv->tlan_rev < 0x30) { 1618 TLAN_DBG(TLAN_DEBUG_TX, 1619 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n", 1620 priv->tx_head, priv->tx_tail); 1621 head_list = priv->tx_list + priv->tx_head; 1622 head_list_phys = priv->tx_list_dma 1623 + sizeof(struct tlan_list)*priv->tx_head; 1624 if ((head_list->c_stat & TLAN_CSTAT_READY) 1625 == TLAN_CSTAT_READY) { 1626 netif_stop_queue(dev); 1627 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1628 ack |= TLAN_HC_GO; 1629 } else { 1630 priv->tx_in_progress = 0; 1631 } 1632 } 1633 1634 return ack; 1635 1636 } 1637 1638 1639 1640 1641 /*************************************************************** 1642 * tlan_handle_status_check 1643 * 1644 * Returns: 1645 * 0 if Adapter check, 1 if Network Status check. 1646 * Parms: 1647 * dev Device assigned the IRQ that was 1648 * raised. 1649 * host_int The contents of the HOST_INT 1650 * port. 1651 * 1652 * This function handles Adapter Check/Network Status 1653 * interrupts generated by the adapter. It checks the 1654 * vector in the HOST_INT register to determine if it is 1655 * an Adapter Check interrupt. If so, it resets the 1656 * adapter. Otherwise it clears the status registers 1657 * and services the PHY. 1658 * 1659 **************************************************************/ 1660 1661 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int) 1662 { 1663 struct tlan_priv *priv = netdev_priv(dev); 1664 u32 ack; 1665 u32 error; 1666 u8 net_sts; 1667 u32 phy; 1668 u16 tlphy_ctl; 1669 u16 tlphy_sts; 1670 1671 ack = 1; 1672 if (host_int & TLAN_HI_IV_MASK) { 1673 netif_stop_queue(dev); 1674 error = inl(dev->base_addr + TLAN_CH_PARM); 1675 netdev_info(dev, "Adaptor Error = 0x%x\n", error); 1676 tlan_read_and_clear_stats(dev, TLAN_RECORD); 1677 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD); 1678 1679 schedule_work(&priv->tlan_tqueue); 1680 1681 netif_wake_queue(dev); 1682 ack = 0; 1683 } else { 1684 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name); 1685 phy = priv->phy[priv->phy_num]; 1686 1687 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS); 1688 if (net_sts) { 1689 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts); 1690 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n", 1691 dev->name, (unsigned) net_sts); 1692 } 1693 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) { 1694 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts); 1695 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 1696 if (!(tlphy_sts & TLAN_TS_POLOK) && 1697 !(tlphy_ctl & TLAN_TC_SWAPOL)) { 1698 tlphy_ctl |= TLAN_TC_SWAPOL; 1699 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1700 tlphy_ctl); 1701 } else if ((tlphy_sts & TLAN_TS_POLOK) && 1702 (tlphy_ctl & TLAN_TC_SWAPOL)) { 1703 tlphy_ctl &= ~TLAN_TC_SWAPOL; 1704 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, 1705 tlphy_ctl); 1706 } 1707 1708 if (debug) 1709 tlan_phy_print(dev); 1710 } 1711 } 1712 1713 return ack; 1714 1715 } 1716 1717 1718 1719 1720 /*************************************************************** 1721 * tlan_handle_rx_eoc 1722 * 1723 * Returns: 1724 * 1 1725 * Parms: 1726 * dev Device assigned the IRQ that was 1727 * raised. 1728 * host_int The contents of the HOST_INT 1729 * port. 1730 * 1731 * This driver is structured to determine EOC occurrences by 1732 * reading the CSTAT member of the list structure. Rx EOC 1733 * interrupts are disabled via the DIO INTDIS register. 1734 * However, TLAN chips before revision 3.0 didn't have this 1735 * CSTAT member or a INTDIS register, so if this chip is 1736 * pre-3.0, process EOC interrupts normally. 1737 * 1738 **************************************************************/ 1739 1740 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int) 1741 { 1742 struct tlan_priv *priv = netdev_priv(dev); 1743 dma_addr_t head_list_phys; 1744 u32 ack = 1; 1745 1746 if (priv->tlan_rev < 0x30) { 1747 TLAN_DBG(TLAN_DEBUG_RX, 1748 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n", 1749 priv->rx_head, priv->rx_tail); 1750 head_list_phys = priv->rx_list_dma 1751 + sizeof(struct tlan_list)*priv->rx_head; 1752 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM); 1753 ack |= TLAN_HC_GO | TLAN_HC_RT; 1754 priv->rx_eoc_count++; 1755 } 1756 1757 return ack; 1758 1759 } 1760 1761 1762 1763 1764 /***************************************************************************** 1765 ****************************************************************************** 1766 1767 ThunderLAN driver timer function 1768 1769 ****************************************************************************** 1770 *****************************************************************************/ 1771 1772 1773 /*************************************************************** 1774 * tlan_timer 1775 * 1776 * Returns: 1777 * Nothing 1778 * Parms: 1779 * data A value given to add timer when 1780 * add_timer was called. 1781 * 1782 * This function handles timed functionality for the 1783 * TLAN driver. The two current timer uses are for 1784 * delaying for autonegotionation and driving the ACT LED. 1785 * - Autonegotiation requires being allowed about 1786 * 2 1/2 seconds before attempting to transmit a 1787 * packet. It would be a very bad thing to hang 1788 * the kernel this long, so the driver doesn't 1789 * allow transmission 'til after this time, for 1790 * certain PHYs. It would be much nicer if all 1791 * PHYs were interrupt-capable like the internal 1792 * PHY. 1793 * - The ACT LED, which shows adapter activity, is 1794 * driven by the driver, and so must be left on 1795 * for a short period to power up the LED so it 1796 * can be seen. This delay can be changed by 1797 * changing the TLAN_TIMER_ACT_DELAY in tlan.h, 1798 * if desired. 100 ms produces a slightly 1799 * sluggish response. 1800 * 1801 **************************************************************/ 1802 1803 static void tlan_timer(unsigned long data) 1804 { 1805 struct net_device *dev = (struct net_device *) data; 1806 struct tlan_priv *priv = netdev_priv(dev); 1807 u32 elapsed; 1808 unsigned long flags = 0; 1809 1810 priv->timer.function = NULL; 1811 1812 switch (priv->timer_type) { 1813 #ifdef MONITOR 1814 case TLAN_TIMER_LINK_BEAT: 1815 tlan_phy_monitor(dev); 1816 break; 1817 #endif 1818 case TLAN_TIMER_PHY_PDOWN: 1819 tlan_phy_power_down(dev); 1820 break; 1821 case TLAN_TIMER_PHY_PUP: 1822 tlan_phy_power_up(dev); 1823 break; 1824 case TLAN_TIMER_PHY_RESET: 1825 tlan_phy_reset(dev); 1826 break; 1827 case TLAN_TIMER_PHY_START_LINK: 1828 tlan_phy_start_link(dev); 1829 break; 1830 case TLAN_TIMER_PHY_FINISH_AN: 1831 tlan_phy_finish_auto_neg(dev); 1832 break; 1833 case TLAN_TIMER_FINISH_RESET: 1834 tlan_finish_reset(dev); 1835 break; 1836 case TLAN_TIMER_ACTIVITY: 1837 spin_lock_irqsave(&priv->lock, flags); 1838 if (priv->timer.function == NULL) { 1839 elapsed = jiffies - priv->timer_set_at; 1840 if (elapsed >= TLAN_TIMER_ACT_DELAY) { 1841 tlan_dio_write8(dev->base_addr, 1842 TLAN_LED_REG, TLAN_LED_LINK); 1843 } else { 1844 priv->timer.function = tlan_timer; 1845 priv->timer.expires = priv->timer_set_at 1846 + TLAN_TIMER_ACT_DELAY; 1847 spin_unlock_irqrestore(&priv->lock, flags); 1848 add_timer(&priv->timer); 1849 break; 1850 } 1851 } 1852 spin_unlock_irqrestore(&priv->lock, flags); 1853 break; 1854 default: 1855 break; 1856 } 1857 1858 } 1859 1860 1861 1862 1863 /***************************************************************************** 1864 ****************************************************************************** 1865 1866 ThunderLAN driver adapter related routines 1867 1868 ****************************************************************************** 1869 *****************************************************************************/ 1870 1871 1872 /*************************************************************** 1873 * tlan_reset_lists 1874 * 1875 * Returns: 1876 * Nothing 1877 * Parms: 1878 * dev The device structure with the list 1879 * stuctures to be reset. 1880 * 1881 * This routine sets the variables associated with managing 1882 * the TLAN lists to their initial values. 1883 * 1884 **************************************************************/ 1885 1886 static void tlan_reset_lists(struct net_device *dev) 1887 { 1888 struct tlan_priv *priv = netdev_priv(dev); 1889 int i; 1890 struct tlan_list *list; 1891 dma_addr_t list_phys; 1892 struct sk_buff *skb; 1893 1894 priv->tx_head = 0; 1895 priv->tx_tail = 0; 1896 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1897 list = priv->tx_list + i; 1898 list->c_stat = TLAN_CSTAT_UNUSED; 1899 list->buffer[0].address = 0; 1900 list->buffer[2].count = 0; 1901 list->buffer[2].address = 0; 1902 list->buffer[8].address = 0; 1903 list->buffer[9].address = 0; 1904 } 1905 1906 priv->rx_head = 0; 1907 priv->rx_tail = TLAN_NUM_RX_LISTS - 1; 1908 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1909 list = priv->rx_list + i; 1910 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i; 1911 list->c_stat = TLAN_CSTAT_READY; 1912 list->frame_size = TLAN_MAX_FRAME_SIZE; 1913 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; 1914 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5); 1915 if (!skb) { 1916 netdev_err(dev, "Out of memory for received data\n"); 1917 break; 1918 } 1919 1920 list->buffer[0].address = pci_map_single(priv->pci_dev, 1921 skb->data, 1922 TLAN_MAX_FRAME_SIZE, 1923 PCI_DMA_FROMDEVICE); 1924 tlan_store_skb(list, skb); 1925 list->buffer[1].count = 0; 1926 list->buffer[1].address = 0; 1927 list->forward = list_phys + sizeof(struct tlan_list); 1928 } 1929 1930 /* in case ran out of memory early, clear bits */ 1931 while (i < TLAN_NUM_RX_LISTS) { 1932 tlan_store_skb(priv->rx_list + i, NULL); 1933 ++i; 1934 } 1935 list->forward = 0; 1936 1937 } 1938 1939 1940 static void tlan_free_lists(struct net_device *dev) 1941 { 1942 struct tlan_priv *priv = netdev_priv(dev); 1943 int i; 1944 struct tlan_list *list; 1945 struct sk_buff *skb; 1946 1947 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { 1948 list = priv->tx_list + i; 1949 skb = tlan_get_skb(list); 1950 if (skb) { 1951 pci_unmap_single( 1952 priv->pci_dev, 1953 list->buffer[0].address, 1954 max(skb->len, 1955 (unsigned int)TLAN_MIN_FRAME_SIZE), 1956 PCI_DMA_TODEVICE); 1957 dev_kfree_skb_any(skb); 1958 list->buffer[8].address = 0; 1959 list->buffer[9].address = 0; 1960 } 1961 } 1962 1963 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { 1964 list = priv->rx_list + i; 1965 skb = tlan_get_skb(list); 1966 if (skb) { 1967 pci_unmap_single(priv->pci_dev, 1968 list->buffer[0].address, 1969 TLAN_MAX_FRAME_SIZE, 1970 PCI_DMA_FROMDEVICE); 1971 dev_kfree_skb_any(skb); 1972 list->buffer[8].address = 0; 1973 list->buffer[9].address = 0; 1974 } 1975 } 1976 } 1977 1978 1979 1980 1981 /*************************************************************** 1982 * tlan_print_dio 1983 * 1984 * Returns: 1985 * Nothing 1986 * Parms: 1987 * io_base Base IO port of the device of 1988 * which to print DIO registers. 1989 * 1990 * This function prints out all the internal (DIO) 1991 * registers of a TLAN chip. 1992 * 1993 **************************************************************/ 1994 1995 static void tlan_print_dio(u16 io_base) 1996 { 1997 u32 data0, data1; 1998 int i; 1999 2000 pr_info("Contents of internal registers for io base 0x%04hx\n", 2001 io_base); 2002 pr_info("Off. +0 +4\n"); 2003 for (i = 0; i < 0x4C; i += 8) { 2004 data0 = tlan_dio_read32(io_base, i); 2005 data1 = tlan_dio_read32(io_base, i + 0x4); 2006 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1); 2007 } 2008 2009 } 2010 2011 2012 2013 2014 /*************************************************************** 2015 * TLan_PrintList 2016 * 2017 * Returns: 2018 * Nothing 2019 * Parms: 2020 * list A pointer to the struct tlan_list structure to 2021 * be printed. 2022 * type A string to designate type of list, 2023 * "Rx" or "Tx". 2024 * num The index of the list. 2025 * 2026 * This function prints out the contents of the list 2027 * pointed to by the list parameter. 2028 * 2029 **************************************************************/ 2030 2031 static void tlan_print_list(struct tlan_list *list, char *type, int num) 2032 { 2033 int i; 2034 2035 pr_info("%s List %d at %p\n", type, num, list); 2036 pr_info(" Forward = 0x%08x\n", list->forward); 2037 pr_info(" CSTAT = 0x%04hx\n", list->c_stat); 2038 pr_info(" Frame Size = 0x%04hx\n", list->frame_size); 2039 /* for (i = 0; i < 10; i++) { */ 2040 for (i = 0; i < 2; i++) { 2041 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n", 2042 i, list->buffer[i].count, list->buffer[i].address); 2043 } 2044 2045 } 2046 2047 2048 2049 2050 /*************************************************************** 2051 * tlan_read_and_clear_stats 2052 * 2053 * Returns: 2054 * Nothing 2055 * Parms: 2056 * dev Pointer to device structure of adapter 2057 * to which to read stats. 2058 * record Flag indicating whether to add 2059 * 2060 * This functions reads all the internal status registers 2061 * of the TLAN chip, which clears them as a side effect. 2062 * It then either adds the values to the device's status 2063 * struct, or discards them, depending on whether record 2064 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0). 2065 * 2066 **************************************************************/ 2067 2068 static void tlan_read_and_clear_stats(struct net_device *dev, int record) 2069 { 2070 u32 tx_good, tx_under; 2071 u32 rx_good, rx_over; 2072 u32 def_tx, crc, code; 2073 u32 multi_col, single_col; 2074 u32 excess_col, late_col, loss; 2075 2076 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2077 tx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2078 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2079 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2080 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2081 2082 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR); 2083 rx_good = inb(dev->base_addr + TLAN_DIO_DATA); 2084 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2085 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16; 2086 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2087 2088 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR); 2089 def_tx = inb(dev->base_addr + TLAN_DIO_DATA); 2090 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2091 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2092 code = inb(dev->base_addr + TLAN_DIO_DATA + 3); 2093 2094 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2095 multi_col = inb(dev->base_addr + TLAN_DIO_DATA); 2096 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8; 2097 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2098 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8; 2099 2100 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR); 2101 excess_col = inb(dev->base_addr + TLAN_DIO_DATA); 2102 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1); 2103 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2); 2104 2105 if (record) { 2106 dev->stats.rx_packets += rx_good; 2107 dev->stats.rx_errors += rx_over + crc + code; 2108 dev->stats.tx_packets += tx_good; 2109 dev->stats.tx_errors += tx_under + loss; 2110 dev->stats.collisions += multi_col 2111 + single_col + excess_col + late_col; 2112 2113 dev->stats.rx_over_errors += rx_over; 2114 dev->stats.rx_crc_errors += crc; 2115 dev->stats.rx_frame_errors += code; 2116 2117 dev->stats.tx_aborted_errors += tx_under; 2118 dev->stats.tx_carrier_errors += loss; 2119 } 2120 2121 } 2122 2123 2124 2125 2126 /*************************************************************** 2127 * TLan_Reset 2128 * 2129 * Returns: 2130 * 0 2131 * Parms: 2132 * dev Pointer to device structure of adapter 2133 * to be reset. 2134 * 2135 * This function resets the adapter and it's physical 2136 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN 2137 * Programmer's Guide" for details. The routine tries to 2138 * implement what is detailed there, though adjustments 2139 * have been made. 2140 * 2141 **************************************************************/ 2142 2143 static void 2144 tlan_reset_adapter(struct net_device *dev) 2145 { 2146 struct tlan_priv *priv = netdev_priv(dev); 2147 int i; 2148 u32 addr; 2149 u32 data; 2150 u8 data8; 2151 2152 priv->tlan_full_duplex = false; 2153 priv->phy_online = 0; 2154 netif_carrier_off(dev); 2155 2156 /* 1. Assert reset bit. */ 2157 2158 data = inl(dev->base_addr + TLAN_HOST_CMD); 2159 data |= TLAN_HC_AD_RST; 2160 outl(data, dev->base_addr + TLAN_HOST_CMD); 2161 2162 udelay(1000); 2163 2164 /* 2. Turn off interrupts. (Probably isn't necessary) */ 2165 2166 data = inl(dev->base_addr + TLAN_HOST_CMD); 2167 data |= TLAN_HC_INT_OFF; 2168 outl(data, dev->base_addr + TLAN_HOST_CMD); 2169 2170 /* 3. Clear AREGs and HASHs. */ 2171 2172 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4) 2173 tlan_dio_write32(dev->base_addr, (u16) i, 0); 2174 2175 /* 4. Setup NetConfig register. */ 2176 2177 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; 2178 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data); 2179 2180 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */ 2181 2182 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD); 2183 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD); 2184 2185 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */ 2186 2187 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2188 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2189 tlan_set_bit(TLAN_NET_SIO_NMRST, addr); 2190 2191 /* 7. Setup the remaining registers. */ 2192 2193 if (priv->tlan_rev >= 0x30) { 2194 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC; 2195 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8); 2196 } 2197 tlan_phy_detect(dev); 2198 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN; 2199 2200 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) { 2201 data |= TLAN_NET_CFG_BIT; 2202 if (priv->aui == 1) { 2203 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a); 2204 } else if (priv->duplex == TLAN_DUPLEX_FULL) { 2205 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00); 2206 priv->tlan_full_duplex = true; 2207 } else { 2208 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08); 2209 } 2210 } 2211 2212 if (priv->phy_num == 0) 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 2226 static void 2227 tlan_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 (tlphy_id1 == NAT_SEM_ID1) && 2265 (tlphy_id2 == NAT_SEM_ID2)) { 2266 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner); 2267 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par); 2268 2269 netdev_info(dev, 2270 "Link active with %s %uMbps %s-Duplex\n", 2271 !(tlphy_par & TLAN_PHY_AN_EN_STAT) 2272 ? "forced" : "Autonegotiation enabled,", 2273 tlphy_par & TLAN_PHY_SPEED_100 2274 ? 100 : 10, 2275 tlphy_par & TLAN_PHY_DUPLEX_FULL 2276 ? "Full" : "Half"); 2277 2278 if (tlphy_par & TLAN_PHY_AN_EN_STAT) { 2279 netdev_info(dev, "Partner capability:"); 2280 for (i = 5; i < 10; i++) 2281 if (partner & (1 << i)) 2282 pr_cont(" %s", media[i-5]); 2283 pr_cont("\n"); 2284 } 2285 2286 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 2287 TLAN_LED_LINK); 2288 #ifdef MONITOR 2289 /* We have link beat..for now anyway */ 2290 priv->link = 1; 2291 /*Enabling link beat monitoring */ 2292 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT); 2293 #endif 2294 } else if (status & MII_GS_LINK) { 2295 netdev_info(dev, "Link active\n"); 2296 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 2297 TLAN_LED_LINK); 2298 } 2299 } 2300 2301 if (priv->phy_num == 0) { 2302 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); 2303 tlphy_ctl |= TLAN_TC_INTEN; 2304 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl); 2305 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO); 2306 sio |= TLAN_NET_SIO_MINTEN; 2307 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio); 2308 } 2309 2310 if (status & MII_GS_LINK) { 2311 tlan_set_mac(dev, 0, dev->dev_addr); 2312 priv->phy_online = 1; 2313 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1); 2314 if (debug >= 1 && debug != TLAN_DEBUG_PROBE) 2315 outb((TLAN_HC_REQ_INT >> 8), 2316 dev->base_addr + TLAN_HOST_CMD + 1); 2317 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM); 2318 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD); 2319 netif_carrier_on(dev); 2320 } else { 2321 netdev_info(dev, "Link inactive, will retry in 10 secs...\n"); 2322 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET); 2323 return; 2324 } 2325 tlan_set_multicast_list(dev); 2326 2327 } 2328 2329 2330 2331 2332 /*************************************************************** 2333 * tlan_set_mac 2334 * 2335 * Returns: 2336 * Nothing 2337 * Parms: 2338 * dev Pointer to device structure of adapter 2339 * on which to change the AREG. 2340 * areg The AREG to set the address in (0 - 3). 2341 * mac A pointer to an array of chars. Each 2342 * element stores one byte of the address. 2343 * IE, it isn't in ascii. 2344 * 2345 * This function transfers a MAC address to one of the 2346 * TLAN AREGs (address registers). The TLAN chip locks 2347 * the register on writing to offset 0 and unlocks the 2348 * register after writing to offset 5. If NULL is passed 2349 * in mac, then the AREG is filled with 0's. 2350 * 2351 **************************************************************/ 2352 2353 static void tlan_set_mac(struct net_device *dev, int areg, char *mac) 2354 { 2355 int i; 2356 2357 areg *= 6; 2358 2359 if (mac != NULL) { 2360 for (i = 0; i < 6; i++) 2361 tlan_dio_write8(dev->base_addr, 2362 TLAN_AREG_0 + areg + i, mac[i]); 2363 } else { 2364 for (i = 0; i < 6; i++) 2365 tlan_dio_write8(dev->base_addr, 2366 TLAN_AREG_0 + areg + i, 0); 2367 } 2368 2369 } 2370 2371 2372 2373 2374 /***************************************************************************** 2375 ****************************************************************************** 2376 2377 ThunderLAN driver PHY layer routines 2378 2379 ****************************************************************************** 2380 *****************************************************************************/ 2381 2382 2383 2384 /********************************************************************* 2385 * tlan_phy_print 2386 * 2387 * Returns: 2388 * Nothing 2389 * Parms: 2390 * dev A pointer to the device structure of the 2391 * TLAN device having the PHYs to be detailed. 2392 * 2393 * This function prints the registers a PHY (aka transceiver). 2394 * 2395 ********************************************************************/ 2396 2397 static void tlan_phy_print(struct net_device *dev) 2398 { 2399 struct tlan_priv *priv = netdev_priv(dev); 2400 u16 i, data0, data1, data2, data3, phy; 2401 2402 phy = priv->phy[priv->phy_num]; 2403 2404 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2405 netdev_info(dev, "Unmanaged PHY\n"); 2406 } else if (phy <= TLAN_PHY_MAX_ADDR) { 2407 netdev_info(dev, "PHY 0x%02x\n", phy); 2408 pr_info(" Off. +0 +1 +2 +3\n"); 2409 for (i = 0; i < 0x20; i += 4) { 2410 tlan_mii_read_reg(dev, phy, i, &data0); 2411 tlan_mii_read_reg(dev, phy, i + 1, &data1); 2412 tlan_mii_read_reg(dev, phy, i + 2, &data2); 2413 tlan_mii_read_reg(dev, phy, i + 3, &data3); 2414 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n", 2415 i, data0, data1, data2, data3); 2416 } 2417 } else { 2418 netdev_info(dev, "Invalid PHY\n"); 2419 } 2420 2421 } 2422 2423 2424 2425 2426 /********************************************************************* 2427 * tlan_phy_detect 2428 * 2429 * Returns: 2430 * Nothing 2431 * Parms: 2432 * dev A pointer to the device structure of the adapter 2433 * for which the PHY needs determined. 2434 * 2435 * So far I've found that adapters which have external PHYs 2436 * may also use the internal PHY for part of the functionality. 2437 * (eg, AUI/Thinnet). This function finds out if this TLAN 2438 * chip has an internal PHY, and then finds the first external 2439 * PHY (starting from address 0) if it exists). 2440 * 2441 ********************************************************************/ 2442 2443 static void tlan_phy_detect(struct net_device *dev) 2444 { 2445 struct tlan_priv *priv = netdev_priv(dev); 2446 u16 control; 2447 u16 hi; 2448 u16 lo; 2449 u32 phy; 2450 2451 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { 2452 priv->phy_num = 0xffff; 2453 return; 2454 } 2455 2456 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi); 2457 2458 if (hi != 0xffff) 2459 priv->phy[0] = TLAN_PHY_MAX_ADDR; 2460 else 2461 priv->phy[0] = TLAN_PHY_NONE; 2462 2463 priv->phy[1] = TLAN_PHY_NONE; 2464 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) { 2465 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control); 2466 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi); 2467 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo); 2468 if ((control != 0xffff) || 2469 (hi != 0xffff) || (lo != 0xffff)) { 2470 TLAN_DBG(TLAN_DEBUG_GNRL, 2471 "PHY found at %02x %04x %04x %04x\n", 2472 phy, control, hi, lo); 2473 if ((priv->phy[1] == TLAN_PHY_NONE) && 2474 (phy != TLAN_PHY_MAX_ADDR)) { 2475 priv->phy[1] = phy; 2476 } 2477 } 2478 } 2479 2480 if (priv->phy[1] != TLAN_PHY_NONE) 2481 priv->phy_num = 1; 2482 else if (priv->phy[0] != TLAN_PHY_NONE) 2483 priv->phy_num = 0; 2484 else 2485 netdev_info(dev, "Cannot initialize device, no PHY was found!\n"); 2486 2487 } 2488 2489 2490 2491 2492 static void tlan_phy_power_down(struct net_device *dev) 2493 { 2494 struct tlan_priv *priv = netdev_priv(dev); 2495 u16 value; 2496 2497 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name); 2498 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE; 2499 tlan_mii_sync(dev->base_addr); 2500 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2501 if ((priv->phy_num == 0) && 2502 (priv->phy[1] != TLAN_PHY_NONE) && 2503 (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) { 2504 tlan_mii_sync(dev->base_addr); 2505 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value); 2506 } 2507 2508 /* Wait for 50 ms and powerup 2509 * This is abitrary. It is intended to make sure the 2510 * transceiver settles. 2511 */ 2512 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP); 2513 2514 } 2515 2516 2517 2518 2519 static void tlan_phy_power_up(struct net_device *dev) 2520 { 2521 struct tlan_priv *priv = netdev_priv(dev); 2522 u16 value; 2523 2524 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name); 2525 tlan_mii_sync(dev->base_addr); 2526 value = MII_GC_LOOPBK; 2527 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); 2528 tlan_mii_sync(dev->base_addr); 2529 /* Wait for 500 ms and reset the 2530 * transceiver. The TLAN docs say both 50 ms and 2531 * 500 ms, so do the longer, just in case. 2532 */ 2533 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET); 2534 2535 } 2536 2537 2538 2539 2540 static void tlan_phy_reset(struct net_device *dev) 2541 { 2542 struct tlan_priv *priv = netdev_priv(dev); 2543 u16 phy; 2544 u16 value; 2545 2546 phy = priv->phy[priv->phy_num]; 2547 2548 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name); 2549 tlan_mii_sync(dev->base_addr); 2550 value = MII_GC_LOOPBK | MII_GC_RESET; 2551 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value); 2552 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value); 2553 while (value & MII_GC_RESET) 2554 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value); 2555 2556 /* Wait for 500 ms and initialize. 2557 * I don't remember why I wait this long. 2558 * I've changed this to 50ms, as it seems long enough. 2559 */ 2560 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK); 2561 2562 } 2563 2564 2565 2566 2567 static void tlan_phy_start_link(struct net_device *dev) 2568 { 2569 struct tlan_priv *priv = netdev_priv(dev); 2570 u16 ability; 2571 u16 control; 2572 u16 data; 2573 u16 phy; 2574 u16 status; 2575 u16 tctl; 2576 2577 phy = priv->phy[priv->phy_num]; 2578 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name); 2579 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2580 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability); 2581 2582 if ((status & MII_GS_AUTONEG) && 2583 (!priv->aui)) { 2584 ability = status >> 11; 2585 if (priv->speed == TLAN_SPEED_10 && 2586 priv->duplex == TLAN_DUPLEX_HALF) { 2587 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000); 2588 } else if (priv->speed == TLAN_SPEED_10 && 2589 priv->duplex == TLAN_DUPLEX_FULL) { 2590 priv->tlan_full_duplex = true; 2591 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100); 2592 } else if (priv->speed == TLAN_SPEED_100 && 2593 priv->duplex == TLAN_DUPLEX_HALF) { 2594 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000); 2595 } else if (priv->speed == TLAN_SPEED_100 && 2596 priv->duplex == TLAN_DUPLEX_FULL) { 2597 priv->tlan_full_duplex = true; 2598 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100); 2599 } else { 2600 2601 /* Set Auto-Neg advertisement */ 2602 tlan_mii_write_reg(dev, phy, MII_AN_ADV, 2603 (ability << 5) | 1); 2604 /* Enablee Auto-Neg */ 2605 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000); 2606 /* Restart Auto-Neg */ 2607 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200); 2608 /* Wait for 4 sec for autonegotiation 2609 * to complete. The max spec time is less than this 2610 * but the card need additional time to start AN. 2611 * .5 sec should be plenty extra. 2612 */ 2613 netdev_info(dev, "Starting autonegotiation\n"); 2614 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN); 2615 return; 2616 } 2617 2618 } 2619 2620 if ((priv->aui) && (priv->phy_num != 0)) { 2621 priv->phy_num = 0; 2622 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN 2623 | TLAN_NET_CFG_PHY_EN; 2624 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data); 2625 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN); 2626 return; 2627 } else if (priv->phy_num == 0) { 2628 control = 0; 2629 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl); 2630 if (priv->aui) { 2631 tctl |= TLAN_TC_AUISEL; 2632 } else { 2633 tctl &= ~TLAN_TC_AUISEL; 2634 if (priv->duplex == TLAN_DUPLEX_FULL) { 2635 control |= MII_GC_DUPLEX; 2636 priv->tlan_full_duplex = true; 2637 } 2638 if (priv->speed == TLAN_SPEED_100) 2639 control |= MII_GC_SPEEDSEL; 2640 } 2641 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control); 2642 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl); 2643 } 2644 2645 /* Wait for 2 sec to give the transceiver time 2646 * to establish link. 2647 */ 2648 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET); 2649 2650 } 2651 2652 2653 2654 2655 static void tlan_phy_finish_auto_neg(struct net_device *dev) 2656 { 2657 struct tlan_priv *priv = netdev_priv(dev); 2658 u16 an_adv; 2659 u16 an_lpa; 2660 u16 data; 2661 u16 mode; 2662 u16 phy; 2663 u16 status; 2664 2665 phy = priv->phy[priv->phy_num]; 2666 2667 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2668 udelay(1000); 2669 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); 2670 2671 if (!(status & MII_GS_AUTOCMPLT)) { 2672 /* Wait for 8 sec to give the process 2673 * more time. Perhaps we should fail after a while. 2674 */ 2675 if (!priv->neg_be_verbose++) { 2676 pr_info("Giving autonegotiation more time.\n"); 2677 pr_info("Please check that your adapter has\n"); 2678 pr_info("been properly connected to a HUB or Switch.\n"); 2679 pr_info("Trying to establish link in the background...\n"); 2680 } 2681 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN); 2682 return; 2683 } 2684 2685 netdev_info(dev, "Autonegotiation complete\n"); 2686 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv); 2687 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa); 2688 mode = an_adv & an_lpa & 0x03E0; 2689 if (mode & 0x0100) 2690 priv->tlan_full_duplex = true; 2691 else if (!(mode & 0x0080) && (mode & 0x0040)) 2692 priv->tlan_full_duplex = true; 2693 2694 if ((!(mode & 0x0180)) && 2695 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) && 2696 (priv->phy_num != 0)) { 2697 priv->phy_num = 0; 2698 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN 2699 | TLAN_NET_CFG_PHY_EN; 2700 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data); 2701 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN); 2702 return; 2703 } 2704 2705 if (priv->phy_num == 0) { 2706 if ((priv->duplex == TLAN_DUPLEX_FULL) || 2707 (an_adv & an_lpa & 0x0040)) { 2708 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2709 MII_GC_AUTOENB | MII_GC_DUPLEX); 2710 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n"); 2711 } else { 2712 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 2713 MII_GC_AUTOENB); 2714 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n"); 2715 } 2716 } 2717 2718 /* Wait for 100 ms. No reason in partiticular. 2719 */ 2720 tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET); 2721 2722 } 2723 2724 #ifdef MONITOR 2725 2726 /********************************************************************* 2727 * 2728 * tlan_phy_monitor 2729 * 2730 * Returns: 2731 * None 2732 * 2733 * Params: 2734 * dev The device structure of this device. 2735 * 2736 * 2737 * This function monitors PHY condition by reading the status 2738 * register via the MII bus. This can be used to give info 2739 * about link changes (up/down), and possible switch to alternate 2740 * media. 2741 * 2742 *******************************************************************/ 2743 2744 void tlan_phy_monitor(struct net_device *dev) 2745 { 2746 struct tlan_priv *priv = netdev_priv(dev); 2747 u16 phy; 2748 u16 phy_status; 2749 2750 phy = priv->phy[priv->phy_num]; 2751 2752 /* Get PHY status register */ 2753 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status); 2754 2755 /* Check if link has been lost */ 2756 if (!(phy_status & MII_GS_LINK)) { 2757 if (priv->link) { 2758 priv->link = 0; 2759 printk(KERN_DEBUG "TLAN: %s has lost link\n", 2760 dev->name); 2761 netif_carrier_off(dev); 2762 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT); 2763 return; 2764 } 2765 } 2766 2767 /* Link restablished? */ 2768 if ((phy_status & MII_GS_LINK) && !priv->link) { 2769 priv->link = 1; 2770 printk(KERN_DEBUG "TLAN: %s has reestablished link\n", 2771 dev->name); 2772 netif_carrier_on(dev); 2773 } 2774 2775 /* Setup a new monitor */ 2776 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT); 2777 } 2778 2779 #endif /* MONITOR */ 2780 2781 2782 /***************************************************************************** 2783 ****************************************************************************** 2784 2785 ThunderLAN driver MII routines 2786 2787 these routines are based on the information in chap. 2 of the 2788 "ThunderLAN Programmer's Guide", pp. 15-24. 2789 2790 ****************************************************************************** 2791 *****************************************************************************/ 2792 2793 2794 /*************************************************************** 2795 * tlan_mii_read_reg 2796 * 2797 * Returns: 2798 * false if ack received ok 2799 * true if no ack received or other error 2800 * 2801 * Parms: 2802 * dev The device structure containing 2803 * The io address and interrupt count 2804 * for this device. 2805 * phy The address of the PHY to be queried. 2806 * reg The register whose contents are to be 2807 * retrieved. 2808 * val A pointer to a variable to store the 2809 * retrieved value. 2810 * 2811 * This function uses the TLAN's MII bus to retrieve the contents 2812 * of a given register on a PHY. It sends the appropriate info 2813 * and then reads the 16-bit register value from the MII bus via 2814 * the TLAN SIO register. 2815 * 2816 **************************************************************/ 2817 2818 static bool 2819 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val) 2820 { 2821 u8 nack; 2822 u16 sio, tmp; 2823 u32 i; 2824 bool err; 2825 int minten; 2826 struct tlan_priv *priv = netdev_priv(dev); 2827 unsigned long flags = 0; 2828 2829 err = false; 2830 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2831 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 2832 2833 if (!in_irq()) 2834 spin_lock_irqsave(&priv->lock, flags); 2835 2836 tlan_mii_sync(dev->base_addr); 2837 2838 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 2839 if (minten) 2840 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 2841 2842 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 2843 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */ 2844 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 2845 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 2846 2847 2848 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */ 2849 2850 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */ 2851 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2852 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */ 2853 2854 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */ 2855 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */ 2856 if (nack) { /* no ACK, so fake it */ 2857 for (i = 0; i < 16; i++) { 2858 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2859 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2860 } 2861 tmp = 0xffff; 2862 err = true; 2863 } else { /* ACK, so read data */ 2864 for (tmp = 0, i = 0x8000; i; i >>= 1) { 2865 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2866 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio)) 2867 tmp |= i; 2868 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2869 } 2870 } 2871 2872 2873 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 2874 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2875 2876 if (minten) 2877 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 2878 2879 *val = tmp; 2880 2881 if (!in_irq()) 2882 spin_unlock_irqrestore(&priv->lock, flags); 2883 2884 return err; 2885 2886 } 2887 2888 2889 2890 2891 /*************************************************************** 2892 * tlan_mii_send_data 2893 * 2894 * Returns: 2895 * Nothing 2896 * Parms: 2897 * base_port The base IO port of the adapter in 2898 * question. 2899 * dev The address of the PHY to be queried. 2900 * data The value to be placed on the MII bus. 2901 * num_bits The number of bits in data that are to 2902 * be placed on the MII bus. 2903 * 2904 * This function sends on sequence of bits on the MII 2905 * configuration bus. 2906 * 2907 **************************************************************/ 2908 2909 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits) 2910 { 2911 u16 sio; 2912 u32 i; 2913 2914 if (num_bits == 0) 2915 return; 2916 2917 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2918 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2919 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio); 2920 2921 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) { 2922 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2923 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2924 if (data & i) 2925 tlan_set_bit(TLAN_NET_SIO_MDATA, sio); 2926 else 2927 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio); 2928 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2929 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); 2930 } 2931 2932 } 2933 2934 2935 2936 2937 /*************************************************************** 2938 * TLan_MiiSync 2939 * 2940 * Returns: 2941 * Nothing 2942 * Parms: 2943 * base_port The base IO port of the adapter in 2944 * question. 2945 * 2946 * This functions syncs all PHYs in terms of the MII configuration 2947 * bus. 2948 * 2949 **************************************************************/ 2950 2951 static void tlan_mii_sync(u16 base_port) 2952 { 2953 int i; 2954 u16 sio; 2955 2956 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR); 2957 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; 2958 2959 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); 2960 for (i = 0; i < 32; i++) { 2961 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); 2962 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 2963 } 2964 2965 } 2966 2967 2968 2969 2970 /*************************************************************** 2971 * tlan_mii_write_reg 2972 * 2973 * Returns: 2974 * Nothing 2975 * Parms: 2976 * dev The device structure for the device 2977 * to write to. 2978 * phy The address of the PHY to be written to. 2979 * reg The register whose contents are to be 2980 * written. 2981 * val The value to be written to the register. 2982 * 2983 * This function uses the TLAN's MII bus to write the contents of a 2984 * given register on a PHY. It sends the appropriate info and then 2985 * writes the 16-bit register value from the MII configuration bus 2986 * via the TLAN SIO register. 2987 * 2988 **************************************************************/ 2989 2990 static void 2991 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val) 2992 { 2993 u16 sio; 2994 int minten; 2995 unsigned long flags = 0; 2996 struct tlan_priv *priv = netdev_priv(dev); 2997 2998 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR); 2999 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; 3000 3001 if (!in_irq()) 3002 spin_lock_irqsave(&priv->lock, flags); 3003 3004 tlan_mii_sync(dev->base_addr); 3005 3006 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); 3007 if (minten) 3008 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); 3009 3010 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ 3011 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */ 3012 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ 3013 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ 3014 3015 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */ 3016 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */ 3017 3018 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ 3019 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); 3020 3021 if (minten) 3022 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); 3023 3024 if (!in_irq()) 3025 spin_unlock_irqrestore(&priv->lock, flags); 3026 3027 } 3028 3029 3030 3031 3032 /***************************************************************************** 3033 ****************************************************************************** 3034 3035 ThunderLAN driver eeprom routines 3036 3037 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A 3038 EEPROM. these functions are based on information in microchip's 3039 data sheet. I don't know how well this functions will work with 3040 other Eeproms. 3041 3042 ****************************************************************************** 3043 *****************************************************************************/ 3044 3045 3046 /*************************************************************** 3047 * tlan_ee_send_start 3048 * 3049 * Returns: 3050 * Nothing 3051 * Parms: 3052 * io_base The IO port base address for the 3053 * TLAN device with the EEPROM to 3054 * use. 3055 * 3056 * This function sends a start cycle to an EEPROM attached 3057 * to a TLAN chip. 3058 * 3059 **************************************************************/ 3060 3061 static void tlan_ee_send_start(u16 io_base) 3062 { 3063 u16 sio; 3064 3065 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3066 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3067 3068 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3069 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3070 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3071 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3072 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3073 3074 } 3075 3076 3077 3078 3079 /*************************************************************** 3080 * tlan_ee_send_byte 3081 * 3082 * Returns: 3083 * If the correct ack was received, 0, otherwise 1 3084 * Parms: io_base The IO port base address for the 3085 * TLAN device with the EEPROM to 3086 * use. 3087 * data The 8 bits of information to 3088 * send to the EEPROM. 3089 * stop If TLAN_EEPROM_STOP is passed, a 3090 * stop cycle is sent after the 3091 * byte is sent after the ack is 3092 * read. 3093 * 3094 * This function sends a byte on the serial EEPROM line, 3095 * driving the clock to send each bit. The function then 3096 * reverses transmission direction and reads an acknowledge 3097 * bit. 3098 * 3099 **************************************************************/ 3100 3101 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop) 3102 { 3103 int err; 3104 u8 place; 3105 u16 sio; 3106 3107 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3108 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3109 3110 /* Assume clock is low, tx is enabled; */ 3111 for (place = 0x80; place != 0; place >>= 1) { 3112 if (place & data) 3113 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3114 else 3115 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3116 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3117 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3118 } 3119 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3120 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3121 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio); 3122 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3123 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3124 3125 if ((!err) && stop) { 3126 /* STOP, raise data while clock is high */ 3127 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3128 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3129 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3130 } 3131 3132 return err; 3133 3134 } 3135 3136 3137 3138 3139 /*************************************************************** 3140 * tlan_ee_receive_byte 3141 * 3142 * Returns: 3143 * Nothing 3144 * Parms: 3145 * io_base The IO port base address for the 3146 * TLAN device with the EEPROM to 3147 * use. 3148 * data An address to a char to hold the 3149 * data sent from the EEPROM. 3150 * stop If TLAN_EEPROM_STOP is passed, a 3151 * stop cycle is sent after the 3152 * byte is received, and no ack is 3153 * sent. 3154 * 3155 * This function receives 8 bits of data from the EEPROM 3156 * over the serial link. It then sends and ack bit, or no 3157 * ack and a stop bit. This function is used to retrieve 3158 * data after the address of a byte in the EEPROM has been 3159 * sent. 3160 * 3161 **************************************************************/ 3162 3163 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop) 3164 { 3165 u8 place; 3166 u16 sio; 3167 3168 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR); 3169 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; 3170 *data = 0; 3171 3172 /* Assume clock is low, tx is enabled; */ 3173 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); 3174 for (place = 0x80; place; place >>= 1) { 3175 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3176 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio)) 3177 *data |= place; 3178 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3179 } 3180 3181 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); 3182 if (!stop) { 3183 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */ 3184 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3185 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3186 } else { 3187 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */ 3188 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3189 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); 3190 /* STOP, raise data while clock is high */ 3191 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); 3192 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); 3193 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); 3194 } 3195 3196 } 3197 3198 3199 3200 3201 /*************************************************************** 3202 * tlan_ee_read_byte 3203 * 3204 * Returns: 3205 * No error = 0, else, the stage at which the error 3206 * occurred. 3207 * Parms: 3208 * io_base The IO port base address for the 3209 * TLAN device with the EEPROM to 3210 * use. 3211 * ee_addr The address of the byte in the 3212 * EEPROM whose contents are to be 3213 * retrieved. 3214 * data An address to a char to hold the 3215 * data obtained from the EEPROM. 3216 * 3217 * This function reads a byte of information from an byte 3218 * cell in the EEPROM. 3219 * 3220 **************************************************************/ 3221 3222 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data) 3223 { 3224 int err; 3225 struct tlan_priv *priv = netdev_priv(dev); 3226 unsigned long flags = 0; 3227 int ret = 0; 3228 3229 spin_lock_irqsave(&priv->lock, flags); 3230 3231 tlan_ee_send_start(dev->base_addr); 3232 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK); 3233 if (err) { 3234 ret = 1; 3235 goto fail; 3236 } 3237 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK); 3238 if (err) { 3239 ret = 2; 3240 goto fail; 3241 } 3242 tlan_ee_send_start(dev->base_addr); 3243 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK); 3244 if (err) { 3245 ret = 3; 3246 goto fail; 3247 } 3248 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP); 3249 fail: 3250 spin_unlock_irqrestore(&priv->lock, flags); 3251 3252 return ret; 3253 3254 } 3255 3256 3257 3258