1 /* 2 * Copyright (c) 1997-2000 LAN Media Corporation (LMC) 3 * All rights reserved. www.lanmedia.com 4 * 5 * This code is written by: 6 * Andrew Stanley-Jones (asj@cban.com) 7 * Rob Braun (bbraun@vix.com), 8 * Michael Graff (explorer@vix.com) and 9 * Matt Thomas (matt@3am-software.com). 10 * 11 * With Help By: 12 * David Boggs 13 * Ron Crane 14 * Alan Cox 15 * 16 * This software may be used and distributed according to the terms 17 * of the GNU General Public License version 2, incorporated herein by reference. 18 * 19 * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards. 20 * 21 * To control link specific options lmcctl is required. 22 * It can be obtained from ftp.lanmedia.com. 23 * 24 * Linux driver notes: 25 * Linux uses the device struct lmc_private to pass private information 26 * arround. 27 * 28 * The initialization portion of this driver (the lmc_reset() and the 29 * lmc_dec_reset() functions, as well as the led controls and the 30 * lmc_initcsrs() functions. 31 * 32 * The watchdog function runs every second and checks to see if 33 * we still have link, and that the timing source is what we expected 34 * it to be. If link is lost, the interface is marked down, and 35 * we no longer can transmit. 36 * 37 */ 38 39/* $Id: lmc_main.c,v 1.1.1.1 2007/08/03 18:52:49 Exp $ */ 40 41#include <linux/kernel.h> 42#include <linux/module.h> 43#include <linux/string.h> 44#include <linux/timer.h> 45#include <linux/ptrace.h> 46#include <linux/errno.h> 47#include <linux/ioport.h> 48#include <linux/slab.h> 49#include <linux/interrupt.h> 50#include <linux/pci.h> 51#include <linux/delay.h> 52#include <linux/init.h> 53#include <linux/in.h> 54#include <linux/if_arp.h> 55#include <linux/netdevice.h> 56#include <linux/etherdevice.h> 57#include <linux/skbuff.h> 58#include <linux/inet.h> 59#include <linux/bitops.h> 60 61#include <net/syncppp.h> 62 63#include <asm/processor.h> /* Processor type for cache alignment. */ 64#include <asm/io.h> 65#include <asm/dma.h> 66#include <asm/uaccess.h> 67//#include <asm/spinlock.h> 68 69#define DRIVER_MAJOR_VERSION 1 70#define DRIVER_MINOR_VERSION 34 71#define DRIVER_SUB_VERSION 0 72 73#define DRIVER_VERSION ((DRIVER_MAJOR_VERSION << 8) + DRIVER_MINOR_VERSION) 74 75#include "lmc.h" 76#include "lmc_var.h" 77#include "lmc_ioctl.h" 78#include "lmc_debug.h" 79#include "lmc_proto.h" 80 81static int lmc_first_load = 0; 82 83static int LMC_PKT_BUF_SZ = 1542; 84 85static struct pci_device_id lmc_pci_tbl[] = { 86 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST, 87 PCI_VENDOR_ID_LMC, PCI_ANY_ID }, 88 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST, 89 PCI_ANY_ID, PCI_VENDOR_ID_LMC }, 90 { 0 } 91}; 92 93MODULE_DEVICE_TABLE(pci, lmc_pci_tbl); 94MODULE_LICENSE("GPL"); 95 96 97static int lmc_start_xmit(struct sk_buff *skb, struct net_device *dev); 98static int lmc_start_xmit(struct sk_buff *skb, struct net_device *dev); 99static int lmc_rx (struct net_device *dev); 100static int lmc_open(struct net_device *dev); 101static int lmc_close(struct net_device *dev); 102static struct net_device_stats *lmc_get_stats(struct net_device *dev); 103static irqreturn_t lmc_interrupt(int irq, void *dev_instance); 104static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, size_t csr_size); 105static void lmc_softreset(lmc_softc_t * const); 106static void lmc_running_reset(struct net_device *dev); 107static int lmc_ifdown(struct net_device * const); 108static void lmc_watchdog(unsigned long data); 109static void lmc_reset(lmc_softc_t * const sc); 110static void lmc_dec_reset(lmc_softc_t * const sc); 111static void lmc_driver_timeout(struct net_device *dev); 112 113/* 114 * linux reserves 16 device specific IOCTLs. We call them 115 * LMCIOC* to control various bits of our world. 116 */ 117int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/ 118{ 119 lmc_softc_t *sc; 120 lmc_ctl_t ctl; 121 int ret; 122 u_int16_t regVal; 123 unsigned long flags; 124 125 struct sppp *sp; 126 127 ret = -EOPNOTSUPP; 128 129 sc = dev->priv; 130 131 lmc_trace(dev, "lmc_ioctl in"); 132 133 /* 134 * Most functions mess with the structure 135 * Disable interrupts while we do the polling 136 */ 137 spin_lock_irqsave(&sc->lmc_lock, flags); 138 139 switch (cmd) { 140 /* 141 * Return current driver state. Since we keep this up 142 * To date internally, just copy this out to the user. 143 */ 144 case LMCIOCGINFO: /*fold01*/ 145 if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof (lmc_ctl_t))) 146 return -EFAULT; 147 ret = 0; 148 break; 149 150 case LMCIOCSINFO: /*fold01*/ 151 sp = &((struct ppp_device *) dev)->sppp; 152 if (!capable(CAP_NET_ADMIN)) { 153 ret = -EPERM; 154 break; 155 } 156 157 if(dev->flags & IFF_UP){ 158 ret = -EBUSY; 159 break; 160 } 161 162 if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t))) 163 return -EFAULT; 164 165 sc->lmc_media->set_status (sc, &ctl); 166 167 if(ctl.crc_length != sc->ictl.crc_length) { 168 sc->lmc_media->set_crc_length(sc, ctl.crc_length); 169 if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) 170 sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE; 171 else 172 sc->TxDescriptControlInit &= ~LMC_TDES_ADD_CRC_DISABLE; 173 } 174 175 if (ctl.keepalive_onoff == LMC_CTL_OFF) 176 sp->pp_flags &= ~PP_KEEPALIVE; /* Turn off */ 177 else 178 sp->pp_flags |= PP_KEEPALIVE; /* Turn on */ 179 180 ret = 0; 181 break; 182 183 case LMCIOCIFTYPE: /*fold01*/ 184 { 185 u_int16_t old_type = sc->if_type; 186 u_int16_t new_type; 187 188 if (!capable(CAP_NET_ADMIN)) { 189 ret = -EPERM; 190 break; 191 } 192 193 if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t))) 194 return -EFAULT; 195 196 197 if (new_type == old_type) 198 { 199 ret = 0 ; 200 break; /* no change */ 201 } 202 203 lmc_proto_close(sc); 204 lmc_proto_detach(sc); 205 206 sc->if_type = new_type; 207// lmc_proto_init(sc); 208 lmc_proto_attach(sc); 209 lmc_proto_open(sc); 210 211 ret = 0 ; 212 break ; 213 } 214 215 case LMCIOCGETXINFO: /*fold01*/ 216 sc->lmc_xinfo.Magic0 = 0xBEEFCAFE; 217 218 sc->lmc_xinfo.PciCardType = sc->lmc_cardtype; 219 sc->lmc_xinfo.PciSlotNumber = 0; 220 sc->lmc_xinfo.DriverMajorVersion = DRIVER_MAJOR_VERSION; 221 sc->lmc_xinfo.DriverMinorVersion = DRIVER_MINOR_VERSION; 222 sc->lmc_xinfo.DriverSubVersion = DRIVER_SUB_VERSION; 223 sc->lmc_xinfo.XilinxRevisionNumber = 224 lmc_mii_readreg (sc, 0, 3) & 0xf; 225 sc->lmc_xinfo.MaxFrameSize = LMC_PKT_BUF_SZ; 226 sc->lmc_xinfo.link_status = sc->lmc_media->get_link_status (sc); 227 sc->lmc_xinfo.mii_reg16 = lmc_mii_readreg (sc, 0, 16); 228 229 sc->lmc_xinfo.Magic1 = 0xDEADBEEF; 230 231 if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo, 232 sizeof (struct lmc_xinfo))) 233 return -EFAULT; 234 ret = 0; 235 236 break; 237 238 case LMCIOCGETLMCSTATS: /*fold01*/ 239 if (sc->lmc_cardtype == LMC_CARDTYPE_T1){ 240 lmc_mii_writereg (sc, 0, 17, T1FRAMER_FERR_LSB); 241 sc->stats.framingBitErrorCount += 242 lmc_mii_readreg (sc, 0, 18) & 0xff; 243 lmc_mii_writereg (sc, 0, 17, T1FRAMER_FERR_MSB); 244 sc->stats.framingBitErrorCount += 245 (lmc_mii_readreg (sc, 0, 18) & 0xff) << 8; 246 lmc_mii_writereg (sc, 0, 17, T1FRAMER_LCV_LSB); 247 sc->stats.lineCodeViolationCount += 248 lmc_mii_readreg (sc, 0, 18) & 0xff; 249 lmc_mii_writereg (sc, 0, 17, T1FRAMER_LCV_MSB); 250 sc->stats.lineCodeViolationCount += 251 (lmc_mii_readreg (sc, 0, 18) & 0xff) << 8; 252 lmc_mii_writereg (sc, 0, 17, T1FRAMER_AERR); 253 regVal = lmc_mii_readreg (sc, 0, 18) & 0xff; 254 255 sc->stats.lossOfFrameCount += 256 (regVal & T1FRAMER_LOF_MASK) >> 4; 257 sc->stats.changeOfFrameAlignmentCount += 258 (regVal & T1FRAMER_COFA_MASK) >> 2; 259 sc->stats.severelyErroredFrameCount += 260 regVal & T1FRAMER_SEF_MASK; 261 } 262 263 if (copy_to_user(ifr->ifr_data, &sc->stats, 264 sizeof (struct lmc_statistics))) 265 return -EFAULT; 266 267 ret = 0; 268 break; 269 270 case LMCIOCCLEARLMCSTATS: /*fold01*/ 271 if (!capable(CAP_NET_ADMIN)){ 272 ret = -EPERM; 273 break; 274 } 275 276 memset (&sc->stats, 0, sizeof (struct lmc_statistics)); 277 sc->stats.check = STATCHECK; 278 sc->stats.version_size = (DRIVER_VERSION << 16) + 279 sizeof (struct lmc_statistics); 280 sc->stats.lmc_cardtype = sc->lmc_cardtype; 281 ret = 0; 282 break; 283 284 case LMCIOCSETCIRCUIT: /*fold01*/ 285 if (!capable(CAP_NET_ADMIN)){ 286 ret = -EPERM; 287 break; 288 } 289 290 if(dev->flags & IFF_UP){ 291 ret = -EBUSY; 292 break; 293 } 294 295 if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t))) 296 return -EFAULT; 297 sc->lmc_media->set_circuit_type(sc, ctl.circuit_type); 298 sc->ictl.circuit_type = ctl.circuit_type; 299 ret = 0; 300 301 break; 302 303 case LMCIOCRESET: /*fold01*/ 304 if (!capable(CAP_NET_ADMIN)){ 305 ret = -EPERM; 306 break; 307 } 308 309 /* Reset driver and bring back to current state */ 310 printk (" REG16 before reset +%04x\n", lmc_mii_readreg (sc, 0, 16)); 311 lmc_running_reset (dev); 312 printk (" REG16 after reset +%04x\n", lmc_mii_readreg (sc, 0, 16)); 313 314 LMC_EVENT_LOG(LMC_EVENT_FORCEDRESET, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16)); 315 316 ret = 0; 317 break; 318 319#ifdef DEBUG 320 case LMCIOCDUMPEVENTLOG: 321 if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof (u32))) 322 return -EFAULT; 323 if (copy_to_user(ifr->ifr_data + sizeof (u32), lmcEventLogBuf, sizeof (lmcEventLogBuf))) 324 return -EFAULT; 325 326 ret = 0; 327 break; 328#endif /* end ifdef _DBG_EVENTLOG */ 329 case LMCIOCT1CONTROL: /*fold01*/ 330 if (sc->lmc_cardtype != LMC_CARDTYPE_T1){ 331 ret = -EOPNOTSUPP; 332 break; 333 } 334 break; 335 case LMCIOCXILINX: /*fold01*/ 336 { 337 struct lmc_xilinx_control xc; /*fold02*/ 338 339 if (!capable(CAP_NET_ADMIN)){ 340 ret = -EPERM; 341 break; 342 } 343 344 /* 345 * Stop the xwitter whlie we restart the hardware 346 */ 347 netif_stop_queue(dev); 348 349 if (copy_from_user(&xc, ifr->ifr_data, sizeof (struct lmc_xilinx_control))) 350 return -EFAULT; 351 switch(xc.command){ 352 case lmc_xilinx_reset: /*fold02*/ 353 { 354 u16 mii; 355 mii = lmc_mii_readreg (sc, 0, 16); 356 357 /* 358 * Make all of them 0 and make input 359 */ 360 lmc_gpio_mkinput(sc, 0xff); 361 362 /* 363 * make the reset output 364 */ 365 lmc_gpio_mkoutput(sc, LMC_GEP_RESET); 366 367 /* 368 * RESET low to force configuration. This also forces 369 * the transmitter clock to be internal, but we expect to reset 370 * that later anyway. 371 */ 372 373 sc->lmc_gpio &= ~LMC_GEP_RESET; 374 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 375 376 377 /* 378 * hold for more than 10 microseconds 379 */ 380 udelay(50); 381 382 sc->lmc_gpio |= LMC_GEP_RESET; 383 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 384 385 386 /* 387 * stop driving Xilinx-related signals 388 */ 389 lmc_gpio_mkinput(sc, 0xff); 390 391 /* Reset the frammer hardware */ 392 sc->lmc_media->set_link_status (sc, 1); 393 sc->lmc_media->set_status (sc, NULL); 394// lmc_softreset(sc); 395 396 { 397 int i; 398 for(i = 0; i < 5; i++){ 399 lmc_led_on(sc, LMC_DS3_LED0); 400 mdelay(100); 401 lmc_led_off(sc, LMC_DS3_LED0); 402 lmc_led_on(sc, LMC_DS3_LED1); 403 mdelay(100); 404 lmc_led_off(sc, LMC_DS3_LED1); 405 lmc_led_on(sc, LMC_DS3_LED3); 406 mdelay(100); 407 lmc_led_off(sc, LMC_DS3_LED3); 408 lmc_led_on(sc, LMC_DS3_LED2); 409 mdelay(100); 410 lmc_led_off(sc, LMC_DS3_LED2); 411 } 412 } 413 414 415 416 ret = 0x0; 417 418 } 419 420 break; 421 case lmc_xilinx_load_prom: /*fold02*/ 422 { 423 u16 mii; 424 int timeout = 500000; 425 mii = lmc_mii_readreg (sc, 0, 16); 426 427 /* 428 * Make all of them 0 and make input 429 */ 430 lmc_gpio_mkinput(sc, 0xff); 431 432 /* 433 * make the reset output 434 */ 435 lmc_gpio_mkoutput(sc, LMC_GEP_DP | LMC_GEP_RESET); 436 437 /* 438 * RESET low to force configuration. This also forces 439 * the transmitter clock to be internal, but we expect to reset 440 * that later anyway. 441 */ 442 443 sc->lmc_gpio &= ~(LMC_GEP_RESET | LMC_GEP_DP); 444 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 445 446 447 /* 448 * hold for more than 10 microseconds 449 */ 450 udelay(50); 451 452 sc->lmc_gpio |= LMC_GEP_DP | LMC_GEP_RESET; 453 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 454 455 /* 456 * busy wait for the chip to reset 457 */ 458 while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 && 459 (timeout-- > 0)) 460 ; 461 462 463 /* 464 * stop driving Xilinx-related signals 465 */ 466 lmc_gpio_mkinput(sc, 0xff); 467 468 ret = 0x0; 469 470 471 break; 472 473 } 474 475 case lmc_xilinx_load: /*fold02*/ 476 { 477 char *data; 478 int pos; 479 int timeout = 500000; 480 481 if(xc.data == 0x0){ 482 ret = -EINVAL; 483 break; 484 } 485 486 data = kmalloc(xc.len, GFP_KERNEL); 487 if(data == 0x0){ 488 printk(KERN_WARNING "%s: Failed to allocate memory for copy\n", dev->name); 489 ret = -ENOMEM; 490 break; 491 } 492 493 if(copy_from_user(data, xc.data, xc.len)) 494 { 495 kfree(data); 496 ret = -ENOMEM; 497 break; 498 } 499 500 printk("%s: Starting load of data Len: %d at 0x%p == 0x%p\n", dev->name, xc.len, xc.data, data); 501 502 lmc_gpio_mkinput(sc, 0xff); 503 504 /* 505 * Clear the Xilinx and start prgramming from the DEC 506 */ 507 508 /* 509 * Set ouput as: 510 * Reset: 0 (active) 511 * DP: 0 (active) 512 * Mode: 1 513 * 514 */ 515 sc->lmc_gpio = 0x00; 516 sc->lmc_gpio &= ~LMC_GEP_DP; 517 sc->lmc_gpio &= ~LMC_GEP_RESET; 518 sc->lmc_gpio |= LMC_GEP_MODE; 519 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 520 521 lmc_gpio_mkoutput(sc, LMC_GEP_MODE | LMC_GEP_DP | LMC_GEP_RESET); 522 523 /* 524 * Wait at least 10 us 20 to be safe 525 */ 526 udelay(50); 527 528 /* 529 * Clear reset and activate programming lines 530 * Reset: Input 531 * DP: Input 532 * Clock: Output 533 * Data: Output 534 * Mode: Output 535 */ 536 lmc_gpio_mkinput(sc, LMC_GEP_DP | LMC_GEP_RESET); 537 538 /* 539 * Set LOAD, DATA, Clock to 1 540 */ 541 sc->lmc_gpio = 0x00; 542 sc->lmc_gpio |= LMC_GEP_MODE; 543 sc->lmc_gpio |= LMC_GEP_DATA; 544 sc->lmc_gpio |= LMC_GEP_CLK; 545 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 546 547 lmc_gpio_mkoutput(sc, LMC_GEP_DATA | LMC_GEP_CLK | LMC_GEP_MODE ); 548 549 /* 550 * busy wait for the chip to reset 551 */ 552 while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 && 553 (timeout-- > 0)) 554 ; 555 556 printk(KERN_DEBUG "%s: Waited %d for the Xilinx to clear it's memory\n", dev->name, 500000-timeout); 557 558 for(pos = 0; pos < xc.len; pos++){ 559 switch(data[pos]){ 560 case 0: 561 sc->lmc_gpio &= ~LMC_GEP_DATA; /* Data is 0 */ 562 break; 563 case 1: 564 sc->lmc_gpio |= LMC_GEP_DATA; /* Data is 1 */ 565 break; 566 default: 567 printk(KERN_WARNING "%s Bad data in xilinx programming data at %d, got %d wanted 0 or 1\n", dev->name, pos, data[pos]); 568 sc->lmc_gpio |= LMC_GEP_DATA; /* Assume it's 1 */ 569 } 570 sc->lmc_gpio &= ~LMC_GEP_CLK; /* Clock to zero */ 571 sc->lmc_gpio |= LMC_GEP_MODE; 572 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 573 udelay(1); 574 575 sc->lmc_gpio |= LMC_GEP_CLK; /* Put the clack back to one */ 576 sc->lmc_gpio |= LMC_GEP_MODE; 577 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 578 udelay(1); 579 } 580 if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0){ 581 printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (corrupted data)\n", dev->name); 582 } 583 else if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0){ 584 printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (done)\n", dev->name); 585 } 586 else { 587 printk(KERN_DEBUG "%s: Done reprogramming Xilinx, %d bits, good luck!\n", dev->name, pos); 588 } 589 590 lmc_gpio_mkinput(sc, 0xff); 591 592 sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET; 593 lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); 594 595 sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET; 596 lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); 597 598 kfree(data); 599 600 ret = 0; 601 602 break; 603 } 604 default: /*fold02*/ 605 ret = -EBADE; 606 break; 607 } 608 609 netif_wake_queue(dev); 610 sc->lmc_txfull = 0; 611 612 } 613 break; 614 default: /*fold01*/ 615 /* If we don't know what to do, give the protocol a shot. */ 616 ret = lmc_proto_ioctl (sc, ifr, cmd); 617 break; 618 } 619 620 spin_unlock_irqrestore(&sc->lmc_lock, flags); /*fold01*/ 621 622 lmc_trace(dev, "lmc_ioctl out"); 623 624 return ret; 625} 626 627 628/* the watchdog process that cruises around */ 629static void lmc_watchdog (unsigned long data) /*fold00*/ 630{ 631 struct net_device *dev = (struct net_device *) data; 632 lmc_softc_t *sc; 633 int link_status; 634 u_int32_t ticks; 635 unsigned long flags; 636 637 sc = dev->priv; 638 639 lmc_trace(dev, "lmc_watchdog in"); 640 641 spin_lock_irqsave(&sc->lmc_lock, flags); 642 643 if(sc->check != 0xBEAFCAFE){ 644 printk("LMC: Corrupt net_device struct, breaking out\n"); 645 spin_unlock_irqrestore(&sc->lmc_lock, flags); 646 return; 647 } 648 649 650 /* Make sure the tx jabber and rx watchdog are off, 651 * and the transmit and receive processes are running. 652 */ 653 654 LMC_CSR_WRITE (sc, csr_15, 0x00000011); 655 sc->lmc_cmdmode |= TULIP_CMD_TXRUN | TULIP_CMD_RXRUN; 656 LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); 657 658 if (sc->lmc_ok == 0) 659 goto kick_timer; 660 661 LMC_EVENT_LOG(LMC_EVENT_WATCHDOG, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16)); 662 663 /* --- begin time out check ----------------------------------- 664 * check for a transmit interrupt timeout 665 * Has the packet xmt vs xmt serviced threshold been exceeded */ 666 if (sc->lmc_taint_tx == sc->lastlmc_taint_tx && 667 sc->stats.tx_packets > sc->lasttx_packets && 668 sc->tx_TimeoutInd == 0) 669 { 670 671 /* wait for the watchdog to come around again */ 672 sc->tx_TimeoutInd = 1; 673 } 674 else if (sc->lmc_taint_tx == sc->lastlmc_taint_tx && 675 sc->stats.tx_packets > sc->lasttx_packets && 676 sc->tx_TimeoutInd) 677 { 678 679 LMC_EVENT_LOG(LMC_EVENT_XMTINTTMO, LMC_CSR_READ (sc, csr_status), 0); 680 681 sc->tx_TimeoutDisplay = 1; 682 sc->stats.tx_TimeoutCnt++; 683 684 /* DEC chip is stuck, hit it with a RESET!!!! */ 685 lmc_running_reset (dev); 686 687 688 /* look at receive & transmit process state to make sure they are running */ 689 LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); 690 691 /* look at: DSR - 02 for Reg 16 692 * CTS - 08 693 * DCD - 10 694 * RI - 20 695 * for Reg 17 696 */ 697 LMC_EVENT_LOG(LMC_EVENT_RESET2, lmc_mii_readreg (sc, 0, 16), lmc_mii_readreg (sc, 0, 17)); 698 699 /* reset the transmit timeout detection flag */ 700 sc->tx_TimeoutInd = 0; 701 sc->lastlmc_taint_tx = sc->lmc_taint_tx; 702 sc->lasttx_packets = sc->stats.tx_packets; 703 } 704 else 705 { 706 sc->tx_TimeoutInd = 0; 707 sc->lastlmc_taint_tx = sc->lmc_taint_tx; 708 sc->lasttx_packets = sc->stats.tx_packets; 709 } 710 711 /* --- end time out check ----------------------------------- */ 712 713 714 link_status = sc->lmc_media->get_link_status (sc); 715 716 /* 717 * hardware level link lost, but the interface is marked as up. 718 * Mark it as down. 719 */ 720 if ((link_status == 0) && (sc->last_link_status != 0)) { 721 printk(KERN_WARNING "%s: hardware/physical link down\n", dev->name); 722 sc->last_link_status = 0; 723 /* lmc_reset (sc); Why reset??? The link can go down ok */ 724 725 /* Inform the world that link has been lost */ 726 netif_carrier_off(dev); 727 } 728 729 /* 730 * hardware link is up, but the interface is marked as down. 731 * Bring it back up again. 732 */ 733 if (link_status != 0 && sc->last_link_status == 0) { 734 printk(KERN_WARNING "%s: hardware/physical link up\n", dev->name); 735 sc->last_link_status = 1; 736 /* lmc_reset (sc); Again why reset??? */ 737 738 /* Inform the world that link protocol is back up. */ 739 netif_carrier_on(dev); 740 741 /* Now we have to tell the syncppp that we had an outage 742 * and that it should deal. Calling sppp_reopen here 743 * should do the trick, but we may have to call sppp_close 744 * when the link goes down, and call sppp_open here. 745 * Subject to more testing. 746 * --bbraun 747 */ 748 749 lmc_proto_reopen(sc); 750 751 } 752 753 /* Call media specific watchdog functions */ 754 sc->lmc_media->watchdog(sc); 755 756 /* 757 * Poke the transmitter to make sure it 758 * never stops, even if we run out of mem 759 */ 760 LMC_CSR_WRITE(sc, csr_rxpoll, 0); 761 762 /* 763 * Check for code that failed 764 * and try and fix it as appropriate 765 */ 766 if(sc->failed_ring == 1){ 767 /* 768 * Failed to setup the recv/xmit rin 769 * Try again 770 */ 771 sc->failed_ring = 0; 772 lmc_softreset(sc); 773 } 774 if(sc->failed_recv_alloc == 1){ 775 /* 776 * We failed to alloc mem in the 777 * interrupt handler, go through the rings 778 * and rebuild them 779 */ 780 sc->failed_recv_alloc = 0; 781 lmc_softreset(sc); 782 } 783 784 785 /* 786 * remember the timer value 787 */ 788kick_timer: 789 790 ticks = LMC_CSR_READ (sc, csr_gp_timer); 791 LMC_CSR_WRITE (sc, csr_gp_timer, 0xffffffffUL); 792 sc->ictl.ticks = 0x0000ffff - (ticks & 0x0000ffff); 793 794 /* 795 * restart this timer. 796 */ 797 sc->timer.expires = jiffies + (HZ); 798 add_timer (&sc->timer); 799 800 spin_unlock_irqrestore(&sc->lmc_lock, flags); 801 802 lmc_trace(dev, "lmc_watchdog out"); 803 804} 805 806static void lmc_setup(struct net_device * const dev) /*fold00*/ 807{ 808 lmc_trace(dev, "lmc_setup in"); 809 810 dev->type = ARPHRD_HDLC; 811 dev->hard_start_xmit = lmc_start_xmit; 812 dev->open = lmc_open; 813 dev->stop = lmc_close; 814 dev->get_stats = lmc_get_stats; 815 dev->do_ioctl = lmc_ioctl; 816 dev->tx_timeout = lmc_driver_timeout; 817 dev->watchdog_timeo = (HZ); /* 1 second */ 818 819 lmc_trace(dev, "lmc_setup out"); 820} 821 822 823static int __devinit lmc_init_one(struct pci_dev *pdev, 824 const struct pci_device_id *ent) 825{ 826 struct net_device *dev; 827 lmc_softc_t *sc; 828 u16 subdevice; 829 u_int16_t AdapModelNum; 830 int err = -ENOMEM; 831 static int cards_found; 832#ifndef GCOM 833 /* We name by type not by vendor */ 834 static const char lmcname[] = "hdlc%d"; 835#else 836 /* 837 * GCOM uses LMC vendor name so that clients can know which card 838 * to attach to. 839 */ 840 static const char lmcname[] = "lmc%d"; 841#endif 842 843 844 /* 845 * Allocate our own device structure 846 */ 847 dev = alloc_netdev(sizeof(lmc_softc_t), lmcname, lmc_setup); 848 if (!dev) { 849 printk (KERN_ERR "lmc:alloc_netdev for device failed\n"); 850 goto out1; 851 } 852 853 lmc_trace(dev, "lmc_init_one in"); 854 855 err = pci_enable_device(pdev); 856 if (err) { 857 printk(KERN_ERR "lmc: pci enable failed:%d\n", err); 858 goto out2; 859 } 860 861 if (pci_request_regions(pdev, "lmc")) { 862 printk(KERN_ERR "lmc: pci_request_region failed\n"); 863 err = -EIO; 864 goto out3; 865 } 866 867 pci_set_drvdata(pdev, dev); 868 869 if(lmc_first_load == 0){ 870 printk(KERN_INFO "Lan Media Corporation WAN Driver Version %d.%d.%d\n", 871 DRIVER_MAJOR_VERSION, DRIVER_MINOR_VERSION,DRIVER_SUB_VERSION); 872 lmc_first_load = 1; 873 } 874 875 sc = dev->priv; 876 sc->lmc_device = dev; 877 sc->name = dev->name; 878 879 /* Initialize the sppp layer */ 880 /* An ioctl can cause a subsequent detach for raw frame interface */ 881 sc->if_type = LMC_PPP; 882 sc->check = 0xBEAFCAFE; 883 dev->base_addr = pci_resource_start(pdev, 0); 884 dev->irq = pdev->irq; 885 886 SET_MODULE_OWNER(dev); 887 SET_NETDEV_DEV(dev, &pdev->dev); 888 889 /* 890 * This will get the protocol layer ready and do any 1 time init's 891 * Must have a valid sc and dev structure 892 */ 893 lmc_proto_init(sc); 894 895 lmc_proto_attach(sc); 896 897 /* 898 * Why were we changing this??? 899 dev->tx_queue_len = 100; 900 */ 901 902 /* Init the spin lock so can call it latter */ 903 904 spin_lock_init(&sc->lmc_lock); 905 pci_set_master(pdev); 906 907 printk ("%s: detected at %lx, irq %d\n", dev->name, 908 dev->base_addr, dev->irq); 909 910 if (register_netdev (dev) != 0) { 911 printk (KERN_ERR "%s: register_netdev failed.\n", dev->name); 912 goto out4; 913 } 914 915 sc->lmc_cardtype = LMC_CARDTYPE_UNKNOWN; 916 sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT; 917 918 /* 919 * 920 * Check either the subvendor or the subdevice, some systems reverse 921 * the setting in the bois, seems to be version and arch dependent? 922 * Fix the error, exchange the two values 923 */ 924 if ((subdevice = pdev->subsystem_device) == PCI_VENDOR_ID_LMC) 925 subdevice = pdev->subsystem_vendor; 926 927 switch (subdevice) { 928 case PCI_DEVICE_ID_LMC_HSSI: 929 printk ("%s: LMC HSSI\n", dev->name); 930 sc->lmc_cardtype = LMC_CARDTYPE_HSSI; 931 sc->lmc_media = &lmc_hssi_media; 932 break; 933 case PCI_DEVICE_ID_LMC_DS3: 934 printk ("%s: LMC DS3\n", dev->name); 935 sc->lmc_cardtype = LMC_CARDTYPE_DS3; 936 sc->lmc_media = &lmc_ds3_media; 937 break; 938 case PCI_DEVICE_ID_LMC_SSI: 939 printk ("%s: LMC SSI\n", dev->name); 940 sc->lmc_cardtype = LMC_CARDTYPE_SSI; 941 sc->lmc_media = &lmc_ssi_media; 942 break; 943 case PCI_DEVICE_ID_LMC_T1: 944 printk ("%s: LMC T1\n", dev->name); 945 sc->lmc_cardtype = LMC_CARDTYPE_T1; 946 sc->lmc_media = &lmc_t1_media; 947 break; 948 default: 949 printk (KERN_WARNING "%s: LMC UNKOWN CARD!\n", dev->name); 950 break; 951 } 952 953 lmc_initcsrs (sc, dev->base_addr, 8); 954 955 lmc_gpio_mkinput (sc, 0xff); 956 sc->lmc_gpio = 0; /* drive no signals yet */ 957 958 sc->lmc_media->defaults (sc); 959 960 sc->lmc_media->set_link_status (sc, LMC_LINK_UP); 961 962 /* verify that the PCI Sub System ID matches the Adapter Model number 963 * from the MII register 964 */ 965 AdapModelNum = (lmc_mii_readreg (sc, 0, 3) & 0x3f0) >> 4; 966 967 if ((AdapModelNum == LMC_ADAP_T1 968 && subdevice == PCI_DEVICE_ID_LMC_T1) || /* detect LMC1200 */ 969 (AdapModelNum == LMC_ADAP_SSI 970 && subdevice == PCI_DEVICE_ID_LMC_SSI) || /* detect LMC1000 */ 971 (AdapModelNum == LMC_ADAP_DS3 972 && subdevice == PCI_DEVICE_ID_LMC_DS3) || /* detect LMC5245 */ 973 (AdapModelNum == LMC_ADAP_HSSI 974 && subdevice == PCI_DEVICE_ID_LMC_HSSI)) 975 { /* detect LMC5200 */ 976 977 } 978 else { 979 printk ("%s: Model number (%d) miscompare for PCI Subsystem ID = 0x%04x\n", 980 dev->name, AdapModelNum, subdevice); 981// return (NULL); 982 } 983 /* 984 * reset clock 985 */ 986 LMC_CSR_WRITE (sc, csr_gp_timer, 0xFFFFFFFFUL); 987 988 sc->board_idx = cards_found++; 989 sc->stats.check = STATCHECK; 990 sc->stats.version_size = (DRIVER_VERSION << 16) + 991 sizeof (struct lmc_statistics); 992 sc->stats.lmc_cardtype = sc->lmc_cardtype; 993 994 sc->lmc_ok = 0; 995 sc->last_link_status = 0; 996 997 lmc_trace(dev, "lmc_init_one out"); 998 return 0; 999 1000 out4: 1001 lmc_proto_detach(sc); 1002 out3: 1003 if (pdev) { 1004 pci_release_regions(pdev); 1005 pci_set_drvdata(pdev, NULL); 1006 } 1007 out2: 1008 free_netdev(dev); 1009 out1: 1010 return err; 1011} 1012 1013/* 1014 * Called from pci when removing module. 1015 */ 1016static void __devexit lmc_remove_one (struct pci_dev *pdev) 1017{ 1018 struct net_device *dev = pci_get_drvdata(pdev); 1019 1020 if (dev) { 1021 lmc_softc_t *sc = dev->priv; 1022 1023 printk("%s: removing...\n", dev->name); 1024 lmc_proto_detach(sc); 1025 unregister_netdev(dev); 1026 free_netdev(dev); 1027 pci_release_regions(pdev); 1028 pci_disable_device(pdev); 1029 pci_set_drvdata(pdev, NULL); 1030 } 1031} 1032 1033/* After this is called, packets can be sent. 1034 * Does not initialize the addresses 1035 */ 1036static int lmc_open (struct net_device *dev) /*fold00*/ 1037{ 1038 lmc_softc_t *sc = dev->priv; 1039 1040 lmc_trace(dev, "lmc_open in"); 1041 1042 lmc_led_on(sc, LMC_DS3_LED0); 1043 1044 lmc_dec_reset (sc); 1045 lmc_reset (sc); 1046 1047 LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); 1048 LMC_EVENT_LOG(LMC_EVENT_RESET2, 1049 lmc_mii_readreg (sc, 0, 16), 1050 lmc_mii_readreg (sc, 0, 17)); 1051 1052 1053 if (sc->lmc_ok){ 1054 lmc_trace(dev, "lmc_open lmc_ok out"); 1055 return (0); 1056 } 1057 1058 lmc_softreset (sc); 1059 1060 /* Since we have to use PCI bus, this should work on x86,alpha,ppc */ 1061 if (request_irq (dev->irq, &lmc_interrupt, IRQF_SHARED, dev->name, dev)){ 1062 printk(KERN_WARNING "%s: could not get irq: %d\n", dev->name, dev->irq); 1063 lmc_trace(dev, "lmc_open irq failed out"); 1064 return -EAGAIN; 1065 } 1066 sc->got_irq = 1; 1067 1068 /* Assert Terminal Active */ 1069 sc->lmc_miireg16 |= LMC_MII16_LED_ALL; 1070 sc->lmc_media->set_link_status (sc, LMC_LINK_UP); 1071 1072 /* 1073 * reset to last state. 1074 */ 1075 sc->lmc_media->set_status (sc, NULL); 1076 1077 /* setup default bits to be used in tulip_desc_t transmit descriptor 1078 * -baz */ 1079 sc->TxDescriptControlInit = ( 1080 LMC_TDES_INTERRUPT_ON_COMPLETION 1081 | LMC_TDES_FIRST_SEGMENT 1082 | LMC_TDES_LAST_SEGMENT 1083 | LMC_TDES_SECOND_ADDR_CHAINED 1084 | LMC_TDES_DISABLE_PADDING 1085 ); 1086 1087 if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) { 1088 /* disable 32 bit CRC generated by ASIC */ 1089 sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE; 1090 } 1091 sc->lmc_media->set_crc_length(sc, sc->ictl.crc_length); 1092 /* Acknoledge the Terminal Active and light LEDs */ 1093 1094 /* dev->flags |= IFF_UP; */ 1095 1096 lmc_proto_open(sc); 1097 1098 dev->do_ioctl = lmc_ioctl; 1099 1100 1101 netif_start_queue(dev); 1102 1103 sc->stats.tx_tbusy0++ ; 1104 1105 /* 1106 * select what interrupts we want to get 1107 */ 1108 sc->lmc_intrmask = 0; 1109 /* Should be using the default interrupt mask defined in the .h file. */ 1110 sc->lmc_intrmask |= (TULIP_STS_NORMALINTR 1111 | TULIP_STS_RXINTR 1112 | TULIP_STS_TXINTR 1113 | TULIP_STS_ABNRMLINTR 1114 | TULIP_STS_SYSERROR 1115 | TULIP_STS_TXSTOPPED 1116 | TULIP_STS_TXUNDERFLOW 1117 | TULIP_STS_RXSTOPPED 1118 | TULIP_STS_RXNOBUF 1119 ); 1120 LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask); 1121 1122 sc->lmc_cmdmode |= TULIP_CMD_TXRUN; 1123 sc->lmc_cmdmode |= TULIP_CMD_RXRUN; 1124 LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); 1125 1126 sc->lmc_ok = 1; /* Run watchdog */ 1127 1128 /* 1129 * Set the if up now - pfb 1130 */ 1131 1132 sc->last_link_status = 1; 1133 1134 /* 1135 * Setup a timer for the watchdog on probe, and start it running. 1136 * Since lmc_ok == 0, it will be a NOP for now. 1137 */ 1138 init_timer (&sc->timer); 1139 sc->timer.expires = jiffies + HZ; 1140 sc->timer.data = (unsigned long) dev; 1141 sc->timer.function = &lmc_watchdog; 1142 add_timer (&sc->timer); 1143 1144 lmc_trace(dev, "lmc_open out"); 1145 1146 return (0); 1147} 1148 1149/* Total reset to compensate for the AdTran DSU doing bad things 1150 * under heavy load 1151 */ 1152 1153static void lmc_running_reset (struct net_device *dev) /*fold00*/ 1154{ 1155 1156 lmc_softc_t *sc = (lmc_softc_t *) dev->priv; 1157 1158 lmc_trace(dev, "lmc_runnig_reset in"); 1159 1160 /* stop interrupts */ 1161 /* Clear the interrupt mask */ 1162 LMC_CSR_WRITE (sc, csr_intr, 0x00000000); 1163 1164 lmc_dec_reset (sc); 1165 lmc_reset (sc); 1166 lmc_softreset (sc); 1167 /* sc->lmc_miireg16 |= LMC_MII16_LED_ALL; */ 1168 sc->lmc_media->set_link_status (sc, 1); 1169 sc->lmc_media->set_status (sc, NULL); 1170 1171 netif_wake_queue(dev); 1172 1173 sc->lmc_txfull = 0; 1174 sc->stats.tx_tbusy0++ ; 1175 1176 sc->lmc_intrmask = TULIP_DEFAULT_INTR_MASK; 1177 LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask); 1178 1179 sc->lmc_cmdmode |= (TULIP_CMD_TXRUN | TULIP_CMD_RXRUN); 1180 LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode); 1181 1182 lmc_trace(dev, "lmc_runnin_reset_out"); 1183} 1184 1185 1186/* This is what is called when you ifconfig down a device. 1187 * This disables the timer for the watchdog and keepalives, 1188 * and disables the irq for dev. 1189 */ 1190static int lmc_close (struct net_device *dev) /*fold00*/ 1191{ 1192 /* not calling release_region() as we should */ 1193 lmc_softc_t *sc; 1194 1195 lmc_trace(dev, "lmc_close in"); 1196 1197 sc = dev->priv; 1198 sc->lmc_ok = 0; 1199 sc->lmc_media->set_link_status (sc, 0); 1200 del_timer (&sc->timer); 1201 lmc_proto_close(sc); 1202 lmc_ifdown (dev); 1203 1204 lmc_trace(dev, "lmc_close out"); 1205 1206 return 0; 1207} 1208 1209/* Ends the transfer of packets */ 1210/* When the interface goes down, this is called */ 1211static int lmc_ifdown (struct net_device *dev) /*fold00*/ 1212{ 1213 lmc_softc_t *sc = dev->priv; 1214 u32 csr6; 1215 int i; 1216 1217 lmc_trace(dev, "lmc_ifdown in"); 1218 1219 /* Don't let anything else go on right now */ 1220 // dev->start = 0; 1221 netif_stop_queue(dev); 1222 sc->stats.tx_tbusy1++ ; 1223 1224 /* stop interrupts */ 1225 /* Clear the interrupt mask */ 1226 LMC_CSR_WRITE (sc, csr_intr, 0x00000000); 1227 1228 /* Stop Tx and Rx on the chip */ 1229 csr6 = LMC_CSR_READ (sc, csr_command); 1230 csr6 &= ~LMC_DEC_ST; /* Turn off the Transmission bit */ 1231 csr6 &= ~LMC_DEC_SR; /* Turn off the Receive bit */ 1232 LMC_CSR_WRITE (sc, csr_command, csr6); 1233 1234 sc->stats.rx_missed_errors += 1235 LMC_CSR_READ (sc, csr_missed_frames) & 0xffff; 1236 1237 /* release the interrupt */ 1238 if(sc->got_irq == 1){ 1239 free_irq (dev->irq, dev); 1240 sc->got_irq = 0; 1241 } 1242 1243 /* free skbuffs in the Rx queue */ 1244 for (i = 0; i < LMC_RXDESCS; i++) 1245 { 1246 struct sk_buff *skb = sc->lmc_rxq[i]; 1247 sc->lmc_rxq[i] = NULL; 1248 sc->lmc_rxring[i].status = 0; 1249 sc->lmc_rxring[i].length = 0; 1250 sc->lmc_rxring[i].buffer1 = 0xDEADBEEF; 1251 if (skb != NULL) 1252 dev_kfree_skb(skb); 1253 sc->lmc_rxq[i] = NULL; 1254 } 1255 1256 for (i = 0; i < LMC_TXDESCS; i++) 1257 { 1258 if (sc->lmc_txq[i] != NULL) 1259 dev_kfree_skb(sc->lmc_txq[i]); 1260 sc->lmc_txq[i] = NULL; 1261 } 1262 1263 lmc_led_off (sc, LMC_MII16_LED_ALL); 1264 1265 netif_wake_queue(dev); 1266 sc->stats.tx_tbusy0++ ; 1267 1268 lmc_trace(dev, "lmc_ifdown out"); 1269 1270 return 0; 1271} 1272 1273/* Interrupt handling routine. This will take an incoming packet, or clean 1274 * up after a trasmit. 1275 */ 1276static irqreturn_t lmc_interrupt (int irq, void *dev_instance) /*fold00*/ 1277{ 1278 struct net_device *dev = (struct net_device *) dev_instance; 1279 lmc_softc_t *sc; 1280 u32 csr; 1281 int i; 1282 s32 stat; 1283 unsigned int badtx; 1284 u32 firstcsr; 1285 int max_work = LMC_RXDESCS; 1286 int handled = 0; 1287 1288 lmc_trace(dev, "lmc_interrupt in"); 1289 1290 sc = dev->priv; 1291 1292 spin_lock(&sc->lmc_lock); 1293 1294 /* 1295 * Read the csr to find what interrupts we have (if any) 1296 */ 1297 csr = LMC_CSR_READ (sc, csr_status); 1298 1299 /* 1300 * Make sure this is our interrupt 1301 */ 1302 if ( ! (csr & sc->lmc_intrmask)) { 1303 goto lmc_int_fail_out; 1304 } 1305 1306 firstcsr = csr; 1307 1308 /* always go through this loop at least once */ 1309 while (csr & sc->lmc_intrmask) { 1310 handled = 1; 1311 1312 /* 1313 * Clear interrupt bits, we handle all case below 1314 */ 1315 LMC_CSR_WRITE (sc, csr_status, csr); 1316 1317 /* 1318 * One of 1319 * - Transmit process timed out CSR5<1> 1320 * - Transmit jabber timeout CSR5<3> 1321 * - Transmit underflow CSR5<5> 1322 * - Transmit Receiver buffer unavailable CSR5<7> 1323 * - Receive process stopped CSR5<8> 1324 * - Receive watchdog timeout CSR5<9> 1325 * - Early transmit interrupt CSR5<10> 1326 * 1327 * Is this really right? Should we do a running reset for jabber? 1328 * (being a WAN card and all) 1329 */ 1330 if (csr & TULIP_STS_ABNRMLINTR){ 1331 lmc_running_reset (dev); 1332 break; 1333 } 1334 1335 if (csr & TULIP_STS_RXINTR){ 1336 lmc_trace(dev, "rx interrupt"); 1337 lmc_rx (dev); 1338 1339 } 1340 if (csr & (TULIP_STS_TXINTR | TULIP_STS_TXNOBUF | TULIP_STS_TXSTOPPED)) { 1341 1342 int n_compl = 0 ; 1343 /* reset the transmit timeout detection flag -baz */ 1344 sc->stats.tx_NoCompleteCnt = 0; 1345 1346 badtx = sc->lmc_taint_tx; 1347 i = badtx % LMC_TXDESCS; 1348 1349 while ((badtx < sc->lmc_next_tx)) { 1350 stat = sc->lmc_txring[i].status; 1351 1352 LMC_EVENT_LOG (LMC_EVENT_XMTINT, stat, 1353 sc->lmc_txring[i].length); 1354 /* 1355 * If bit 31 is 1 the tulip owns it break out of the loop 1356 */ 1357 if (stat & 0x80000000) 1358 break; 1359 1360 n_compl++ ; /* i.e., have an empty slot in ring */ 1361 /* 1362 * If we have no skbuff or have cleared it 1363 * Already continue to the next buffer 1364 */ 1365 if (sc->lmc_txq[i] == NULL) 1366 continue; 1367 1368 /* 1369 * Check the total error summary to look for any errors 1370 */ 1371 if (stat & 0x8000) { 1372 sc->stats.tx_errors++; 1373 if (stat & 0x4104) 1374 sc->stats.tx_aborted_errors++; 1375 if (stat & 0x0C00) 1376 sc->stats.tx_carrier_errors++; 1377 if (stat & 0x0200) 1378 sc->stats.tx_window_errors++; 1379 if (stat & 0x0002) 1380 sc->stats.tx_fifo_errors++; 1381 } 1382 else { 1383 1384 sc->stats.tx_bytes += sc->lmc_txring[i].length & 0x7ff; 1385 1386 sc->stats.tx_packets++; 1387 } 1388 1389 // dev_kfree_skb(sc->lmc_txq[i]); 1390 dev_kfree_skb_irq(sc->lmc_txq[i]); 1391 sc->lmc_txq[i] = NULL; 1392 1393 badtx++; 1394 i = badtx % LMC_TXDESCS; 1395 } 1396 1397 if (sc->lmc_next_tx - badtx > LMC_TXDESCS) 1398 { 1399 printk ("%s: out of sync pointer\n", dev->name); 1400 badtx += LMC_TXDESCS; 1401 } 1402 LMC_EVENT_LOG(LMC_EVENT_TBUSY0, n_compl, 0); 1403 sc->lmc_txfull = 0; 1404 netif_wake_queue(dev); 1405 sc->stats.tx_tbusy0++ ; 1406 1407 1408#ifdef DEBUG 1409 sc->stats.dirtyTx = badtx; 1410 sc->stats.lmc_next_tx = sc->lmc_next_tx; 1411 sc->stats.lmc_txfull = sc->lmc_txfull; 1412#endif 1413 sc->lmc_taint_tx = badtx; 1414 1415 /* 1416 * Why was there a break here??? 1417 */ 1418 } /* end handle transmit interrupt */ 1419 1420 if (csr & TULIP_STS_SYSERROR) { 1421 u32 error; 1422 printk (KERN_WARNING "%s: system bus error csr: %#8.8x\n", dev->name, csr); 1423 error = csr>>23 & 0x7; 1424 switch(error){ 1425 case 0x000: 1426 printk(KERN_WARNING "%s: Parity Fault (bad)\n", dev->name); 1427 break; 1428 case 0x001: 1429 printk(KERN_WARNING "%s: Master Abort (naughty)\n", dev->name); 1430 break; 1431 case 0x010: 1432 printk(KERN_WARNING "%s: Target Abort (not so naughty)\n", dev->name); 1433 break; 1434 default: 1435 printk(KERN_WARNING "%s: This bus error code was supposed to be reserved!\n", dev->name); 1436 } 1437 lmc_dec_reset (sc); 1438 lmc_reset (sc); 1439 LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); 1440 LMC_EVENT_LOG(LMC_EVENT_RESET2, 1441 lmc_mii_readreg (sc, 0, 16), 1442 lmc_mii_readreg (sc, 0, 17)); 1443 1444 } 1445 1446 1447 if(max_work-- <= 0) 1448 break; 1449 1450 /* 1451 * Get current csr status to make sure 1452 * we've cleared all interrupts 1453 */ 1454 csr = LMC_CSR_READ (sc, csr_status); 1455 } /* end interrupt loop */ 1456 LMC_EVENT_LOG(LMC_EVENT_INT, firstcsr, csr); 1457 1458lmc_int_fail_out: 1459 1460 spin_unlock(&sc->lmc_lock); 1461 1462 lmc_trace(dev, "lmc_interrupt out"); 1463 return IRQ_RETVAL(handled); 1464} 1465 1466static int lmc_start_xmit (struct sk_buff *skb, struct net_device *dev) /*fold00*/ 1467{ 1468 lmc_softc_t *sc; 1469 u32 flag; 1470 int entry; 1471 int ret = 0; 1472 unsigned long flags; 1473 1474 lmc_trace(dev, "lmc_start_xmit in"); 1475 1476 sc = dev->priv; 1477 1478 spin_lock_irqsave(&sc->lmc_lock, flags); 1479 1480 /* normal path, tbusy known to be zero */ 1481 1482 entry = sc->lmc_next_tx % LMC_TXDESCS; 1483 1484 sc->lmc_txq[entry] = skb; 1485 sc->lmc_txring[entry].buffer1 = virt_to_bus (skb->data); 1486 1487 LMC_CONSOLE_LOG("xmit", skb->data, skb->len); 1488 1489#ifndef GCOM 1490 /* If the queue is less than half full, don't interrupt */ 1491 if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS / 2) 1492 { 1493 /* Do not interrupt on completion of this packet */ 1494 flag = 0x60000000; 1495 netif_wake_queue(dev); 1496 } 1497 else if (sc->lmc_next_tx - sc->lmc_taint_tx == LMC_TXDESCS / 2) 1498 { 1499 /* This generates an interrupt on completion of this packet */ 1500 flag = 0xe0000000; 1501 netif_wake_queue(dev); 1502 } 1503 else if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS - 1) 1504 { 1505 /* Do not interrupt on completion of this packet */ 1506 flag = 0x60000000; 1507 netif_wake_queue(dev); 1508 } 1509 else 1510 { 1511 /* This generates an interrupt on completion of this packet */ 1512 flag = 0xe0000000; 1513 sc->lmc_txfull = 1; 1514 netif_stop_queue(dev); 1515 } 1516#else 1517 flag = LMC_TDES_INTERRUPT_ON_COMPLETION; 1518 1519 if (sc->lmc_next_tx - sc->lmc_taint_tx >= LMC_TXDESCS - 1) 1520 { /* ring full, go busy */ 1521 sc->lmc_txfull = 1; 1522 netif_stop_queue(dev); 1523 sc->stats.tx_tbusy1++ ; 1524 LMC_EVENT_LOG(LMC_EVENT_TBUSY1, entry, 0); 1525 } 1526#endif 1527 1528 1529 if (entry == LMC_TXDESCS - 1) /* last descriptor in ring */ 1530 flag |= LMC_TDES_END_OF_RING; /* flag as such for Tulip */ 1531 1532 /* don't pad small packets either */ 1533 flag = sc->lmc_txring[entry].length = (skb->len) | flag | 1534 sc->TxDescriptControlInit; 1535 1536 /* set the transmit timeout flag to be checked in 1537 * the watchdog timer handler. -baz 1538 */ 1539 1540 sc->stats.tx_NoCompleteCnt++; 1541 sc->lmc_next_tx++; 1542 1543 /* give ownership to the chip */ 1544 LMC_EVENT_LOG(LMC_EVENT_XMT, flag, entry); 1545 sc->lmc_txring[entry].status = 0x80000000; 1546 1547 /* send now! */ 1548 LMC_CSR_WRITE (sc, csr_txpoll, 0); 1549 1550 dev->trans_start = jiffies; 1551 1552 spin_unlock_irqrestore(&sc->lmc_lock, flags); 1553 1554 lmc_trace(dev, "lmc_start_xmit_out"); 1555 return ret; 1556} 1557 1558 1559static int lmc_rx (struct net_device *dev) /*fold00*/ 1560{ 1561 lmc_softc_t *sc; 1562 int i; 1563 int rx_work_limit = LMC_RXDESCS; 1564 unsigned int next_rx; 1565 int rxIntLoopCnt; /* debug -baz */ 1566 int localLengthErrCnt = 0; 1567 long stat; 1568 struct sk_buff *skb, *nsb; 1569 u16 len; 1570 1571 lmc_trace(dev, "lmc_rx in"); 1572 1573 sc = dev->priv; 1574 1575 lmc_led_on(sc, LMC_DS3_LED3); 1576 1577 rxIntLoopCnt = 0; /* debug -baz */ 1578 1579 i = sc->lmc_next_rx % LMC_RXDESCS; 1580 next_rx = sc->lmc_next_rx; 1581 1582 while (((stat = sc->lmc_rxring[i].status) & LMC_RDES_OWN_BIT) != DESC_OWNED_BY_DC21X4) 1583 { 1584 rxIntLoopCnt++; /* debug -baz */ 1585 len = ((stat & LMC_RDES_FRAME_LENGTH) >> RDES_FRAME_LENGTH_BIT_NUMBER); 1586 if ((stat & 0x0300) != 0x0300) { /* Check first segment and last segment */ 1587 if ((stat & 0x0000ffff) != 0x7fff) { 1588 /* Oversized frame */ 1589 sc->stats.rx_length_errors++; 1590 goto skip_packet; 1591 } 1592 } 1593 1594 if(stat & 0x00000008){ /* Catch a dribbling bit error */ 1595 sc->stats.rx_errors++; 1596 sc->stats.rx_frame_errors++; 1597 goto skip_packet; 1598 } 1599 1600 1601 if(stat & 0x00000004){ /* Catch a CRC error by the Xilinx */ 1602 sc->stats.rx_errors++; 1603 sc->stats.rx_crc_errors++; 1604 goto skip_packet; 1605 } 1606 1607 1608 if (len > LMC_PKT_BUF_SZ){ 1609 sc->stats.rx_length_errors++; 1610 localLengthErrCnt++; 1611 goto skip_packet; 1612 } 1613 1614 if (len < sc->lmc_crcSize + 2) { 1615 sc->stats.rx_length_errors++; 1616 sc->stats.rx_SmallPktCnt++; 1617 localLengthErrCnt++; 1618 goto skip_packet; 1619 } 1620 1621 if(stat & 0x00004000){ 1622 printk(KERN_WARNING "%s: Receiver descriptor error, receiver out of sync?\n", dev->name); 1623 } 1624 1625 len -= sc->lmc_crcSize; 1626 1627 skb = sc->lmc_rxq[i]; 1628 1629 /* 1630 * We ran out of memory at some point 1631 * just allocate an skb buff and continue. 1632 */ 1633 1634 if(skb == 0x0){ 1635 nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); 1636 if (nsb) { 1637 sc->lmc_rxq[i] = nsb; 1638 nsb->dev = dev; 1639 sc->lmc_rxring[i].buffer1 = virt_to_bus(skb_tail_pointer(nsb)); 1640 } 1641 sc->failed_recv_alloc = 1; 1642 goto skip_packet; 1643 } 1644 1645 dev->last_rx = jiffies; 1646 sc->stats.rx_packets++; 1647 sc->stats.rx_bytes += len; 1648 1649 LMC_CONSOLE_LOG("recv", skb->data, len); 1650 1651 /* 1652 * I'm not sure of the sanity of this 1653 * Packets could be arriving at a constant 1654 * 44.210mbits/sec and we're going to copy 1655 * them into a new buffer?? 1656 */ 1657 1658 if(len > (LMC_MTU - (LMC_MTU>>2))){ /* len > LMC_MTU * 0.75 */ 1659 /* 1660 * If it's a large packet don't copy it just hand it up 1661 */ 1662 give_it_anyways: 1663 1664 sc->lmc_rxq[i] = NULL; 1665 sc->lmc_rxring[i].buffer1 = 0x0; 1666 1667 skb_put (skb, len); 1668 skb->protocol = lmc_proto_type(sc, skb); 1669 skb->protocol = htons(ETH_P_WAN_PPP); 1670 skb_reset_mac_header(skb); 1671 /* skb_reset_network_header(skb); */ 1672 skb->dev = dev; 1673 lmc_proto_netif(sc, skb); 1674 1675 /* 1676 * This skb will be destroyed by the upper layers, make a new one 1677 */ 1678 nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); 1679 if (nsb) { 1680 sc->lmc_rxq[i] = nsb; 1681 nsb->dev = dev; 1682 sc->lmc_rxring[i].buffer1 = virt_to_bus(skb_tail_pointer(nsb)); 1683 /* Transferred to 21140 below */ 1684 } 1685 else { 1686 /* 1687 * We've run out of memory, stop trying to allocate 1688 * memory and exit the interrupt handler 1689 * 1690 * The chip may run out of receivers and stop 1691 * in which care we'll try to allocate the buffer 1692 * again. (once a second) 1693 */ 1694 sc->stats.rx_BuffAllocErr++; 1695 LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len); 1696 sc->failed_recv_alloc = 1; 1697 goto skip_out_of_mem; 1698 } 1699 } 1700 else { 1701 nsb = dev_alloc_skb(len); 1702 if(!nsb) { 1703 goto give_it_anyways; 1704 } 1705 skb_copy_from_linear_data(skb, skb_put(nsb, len), len); 1706 1707 nsb->protocol = lmc_proto_type(sc, skb); 1708 skb_reset_mac_header(nsb); 1709 /* skb_reset_network_header(nsb); */ 1710 nsb->dev = dev; 1711 lmc_proto_netif(sc, nsb); 1712 } 1713 1714 skip_packet: 1715 LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len); 1716 sc->lmc_rxring[i].status = DESC_OWNED_BY_DC21X4; 1717 1718 sc->lmc_next_rx++; 1719 i = sc->lmc_next_rx % LMC_RXDESCS; 1720 rx_work_limit--; 1721 if (rx_work_limit < 0) 1722 break; 1723 } 1724 1725 /* detect condition for LMC1000 where DSU cable attaches and fills 1726 * descriptors with bogus packets 1727 * 1728 if (localLengthErrCnt > LMC_RXDESCS - 3) { 1729 sc->stats.rx_BadPktSurgeCnt++; 1730 LMC_EVENT_LOG(LMC_EVENT_BADPKTSURGE, 1731 localLengthErrCnt, 1732 sc->stats.rx_BadPktSurgeCnt); 1733 } */ 1734 1735 /* save max count of receive descriptors serviced */ 1736 if (rxIntLoopCnt > sc->stats.rxIntLoopCnt) { 1737 sc->stats.rxIntLoopCnt = rxIntLoopCnt; /* debug -baz */ 1738 } 1739 1740#ifdef DEBUG 1741 if (rxIntLoopCnt == 0) 1742 { 1743 for (i = 0; i < LMC_RXDESCS; i++) 1744 { 1745 if ((sc->lmc_rxring[i].status & LMC_RDES_OWN_BIT) 1746 != DESC_OWNED_BY_DC21X4) 1747 { 1748 rxIntLoopCnt++; 1749 } 1750 } 1751 LMC_EVENT_LOG(LMC_EVENT_RCVEND, rxIntLoopCnt, 0); 1752 } 1753#endif 1754 1755 1756 lmc_led_off(sc, LMC_DS3_LED3); 1757 1758skip_out_of_mem: 1759 1760 lmc_trace(dev, "lmc_rx out"); 1761 1762 return 0; 1763} 1764 1765static struct net_device_stats *lmc_get_stats (struct net_device *dev) /*fold00*/ 1766{ 1767 lmc_softc_t *sc = dev->priv; 1768 unsigned long flags; 1769 1770 lmc_trace(dev, "lmc_get_stats in"); 1771 1772 1773 spin_lock_irqsave(&sc->lmc_lock, flags); 1774 1775 sc->stats.rx_missed_errors += LMC_CSR_READ (sc, csr_missed_frames) & 0xffff; 1776 1777 spin_unlock_irqrestore(&sc->lmc_lock, flags); 1778 1779 lmc_trace(dev, "lmc_get_stats out"); 1780 1781 return (struct net_device_stats *) &sc->stats; 1782} 1783 1784static struct pci_driver lmc_driver = { 1785 .name = "lmc", 1786 .id_table = lmc_pci_tbl, 1787 .probe = lmc_init_one, 1788 .remove = __devexit_p(lmc_remove_one), 1789}; 1790 1791static int __init init_lmc(void) 1792{ 1793 return pci_register_driver(&lmc_driver); 1794} 1795 1796static void __exit exit_lmc(void) 1797{ 1798 pci_unregister_driver(&lmc_driver); 1799} 1800 1801module_init(init_lmc); 1802module_exit(exit_lmc); 1803 1804unsigned lmc_mii_readreg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno) /*fold00*/ 1805{ 1806 int i; 1807 int command = (0xf6 << 10) | (devaddr << 5) | regno; 1808 int retval = 0; 1809 1810 lmc_trace(sc->lmc_device, "lmc_mii_readreg in"); 1811 1812 LMC_MII_SYNC (sc); 1813 1814 lmc_trace(sc->lmc_device, "lmc_mii_readreg: done sync"); 1815 1816 for (i = 15; i >= 0; i--) 1817 { 1818 int dataval = (command & (1 << i)) ? 0x20000 : 0; 1819 1820 LMC_CSR_WRITE (sc, csr_9, dataval); 1821 lmc_delay (); 1822 /* __SLOW_DOWN_IO; */ 1823 LMC_CSR_WRITE (sc, csr_9, dataval | 0x10000); 1824 lmc_delay (); 1825 /* __SLOW_DOWN_IO; */ 1826 } 1827 1828 lmc_trace(sc->lmc_device, "lmc_mii_readreg: done1"); 1829 1830 for (i = 19; i > 0; i--) 1831 { 1832 LMC_CSR_WRITE (sc, csr_9, 0x40000); 1833 lmc_delay (); 1834 /* __SLOW_DOWN_IO; */ 1835 retval = (retval << 1) | ((LMC_CSR_READ (sc, csr_9) & 0x80000) ? 1 : 0); 1836 LMC_CSR_WRITE (sc, csr_9, 0x40000 | 0x10000); 1837 lmc_delay (); 1838 /* __SLOW_DOWN_IO; */ 1839 } 1840 1841 lmc_trace(sc->lmc_device, "lmc_mii_readreg out"); 1842 1843 return (retval >> 1) & 0xffff; 1844} 1845 1846void lmc_mii_writereg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno, unsigned data) /*fold00*/ 1847{ 1848 int i = 32; 1849 int command = (0x5002 << 16) | (devaddr << 23) | (regno << 18) | data; 1850 1851 lmc_trace(sc->lmc_device, "lmc_mii_writereg in"); 1852 1853 LMC_MII_SYNC (sc); 1854 1855 i = 31; 1856 while (i >= 0) 1857 { 1858 int datav; 1859 1860 if (command & (1 << i)) 1861 datav = 0x20000; 1862 else 1863 datav = 0x00000; 1864 1865 LMC_CSR_WRITE (sc, csr_9, datav); 1866 lmc_delay (); 1867 /* __SLOW_DOWN_IO; */ 1868 LMC_CSR_WRITE (sc, csr_9, (datav | 0x10000)); 1869 lmc_delay (); 1870 /* __SLOW_DOWN_IO; */ 1871 i--; 1872 } 1873 1874 i = 2; 1875 while (i > 0) 1876 { 1877 LMC_CSR_WRITE (sc, csr_9, 0x40000); 1878 lmc_delay (); 1879 /* __SLOW_DOWN_IO; */ 1880 LMC_CSR_WRITE (sc, csr_9, 0x50000); 1881 lmc_delay (); 1882 /* __SLOW_DOWN_IO; */ 1883 i--; 1884 } 1885 1886 lmc_trace(sc->lmc_device, "lmc_mii_writereg out"); 1887} 1888 1889static void lmc_softreset (lmc_softc_t * const sc) /*fold00*/ 1890{ 1891 int i; 1892 1893 lmc_trace(sc->lmc_device, "lmc_softreset in"); 1894 1895 /* Initialize the receive rings and buffers. */ 1896 sc->lmc_txfull = 0; 1897 sc->lmc_next_rx = 0; 1898 sc->lmc_next_tx = 0; 1899 sc->lmc_taint_rx = 0; 1900 sc->lmc_taint_tx = 0; 1901 1902 /* 1903 * Setup each one of the receiver buffers 1904 * allocate an skbuff for each one, setup the descriptor table 1905 * and point each buffer at the next one 1906 */ 1907 1908 for (i = 0; i < LMC_RXDESCS; i++) 1909 { 1910 struct sk_buff *skb; 1911 1912 if (sc->lmc_rxq[i] == NULL) 1913 { 1914 skb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2); 1915 if(skb == NULL){ 1916 printk(KERN_WARNING "%s: Failed to allocate receiver ring, will try again\n", sc->name); 1917 sc->failed_ring = 1; 1918 break; 1919 } 1920 else{ 1921 sc->lmc_rxq[i] = skb; 1922 } 1923 } 1924 else 1925 { 1926 skb = sc->lmc_rxq[i]; 1927 } 1928 1929 skb->dev = sc->lmc_device; 1930 1931 /* owned by 21140 */ 1932 sc->lmc_rxring[i].status = 0x80000000; 1933 1934 /* used to be PKT_BUF_SZ now uses skb since we lose some to head room */ 1935 sc->lmc_rxring[i].length = skb_tailroom(skb); 1936 1937 /* use to be tail which is dumb since you're thinking why write 1938 * to the end of the packj,et but since there's nothing there tail == data 1939 */ 1940 sc->lmc_rxring[i].buffer1 = virt_to_bus (skb->data); 1941 1942 /* This is fair since the structure is static and we have the next address */ 1943 sc->lmc_rxring[i].buffer2 = virt_to_bus (&sc->lmc_rxring[i + 1]); 1944 1945 } 1946 1947 /* 1948 * Sets end of ring 1949 */ 1950 sc->lmc_rxring[i - 1].length |= 0x02000000; /* Set end of buffers flag */ 1951 sc->lmc_rxring[i - 1].buffer2 = virt_to_bus (&sc->lmc_rxring[0]); /* Point back to the start */ 1952 LMC_CSR_WRITE (sc, csr_rxlist, virt_to_bus (sc->lmc_rxring)); /* write base address */ 1953 1954 1955 /* Initialize the transmit rings and buffers */ 1956 for (i = 0; i < LMC_TXDESCS; i++) 1957 { 1958 if (sc->lmc_txq[i] != NULL){ /* have buffer */ 1959 dev_kfree_skb(sc->lmc_txq[i]); /* free it */ 1960 sc->stats.tx_dropped++; /* We just dropped a packet */ 1961 } 1962 sc->lmc_txq[i] = NULL; 1963 sc->lmc_txring[i].status = 0x00000000; 1964 sc->lmc_txring[i].buffer2 = virt_to_bus (&sc->lmc_txring[i + 1]); 1965 } 1966 sc->lmc_txring[i - 1].buffer2 = virt_to_bus (&sc->lmc_txring[0]); 1967 LMC_CSR_WRITE (sc, csr_txlist, virt_to_bus (sc->lmc_txring)); 1968 1969 lmc_trace(sc->lmc_device, "lmc_softreset out"); 1970} 1971 1972void lmc_gpio_mkinput(lmc_softc_t * const sc, u_int32_t bits) /*fold00*/ 1973{ 1974 lmc_trace(sc->lmc_device, "lmc_gpio_mkinput in"); 1975 sc->lmc_gpio_io &= ~bits; 1976 LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io)); 1977 lmc_trace(sc->lmc_device, "lmc_gpio_mkinput out"); 1978} 1979 1980void lmc_gpio_mkoutput(lmc_softc_t * const sc, u_int32_t bits) /*fold00*/ 1981{ 1982 lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput in"); 1983 sc->lmc_gpio_io |= bits; 1984 LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io)); 1985 lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput out"); 1986} 1987 1988void lmc_led_on(lmc_softc_t * const sc, u_int32_t led) /*fold00*/ 1989{ 1990 lmc_trace(sc->lmc_device, "lmc_led_on in"); 1991 if((~sc->lmc_miireg16) & led){ /* Already on! */ 1992 lmc_trace(sc->lmc_device, "lmc_led_on aon out"); 1993 return; 1994 } 1995 1996 sc->lmc_miireg16 &= ~led; 1997 lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); 1998 lmc_trace(sc->lmc_device, "lmc_led_on out"); 1999} 2000 2001void lmc_led_off(lmc_softc_t * const sc, u_int32_t led) /*fold00*/ 2002{ 2003 lmc_trace(sc->lmc_device, "lmc_led_off in"); 2004 if(sc->lmc_miireg16 & led){ /* Already set don't do anything */ 2005 lmc_trace(sc->lmc_device, "lmc_led_off aoff out"); 2006 return; 2007 } 2008 2009 sc->lmc_miireg16 |= led; 2010 lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); 2011 lmc_trace(sc->lmc_device, "lmc_led_off out"); 2012} 2013 2014static void lmc_reset(lmc_softc_t * const sc) /*fold00*/ 2015{ 2016 lmc_trace(sc->lmc_device, "lmc_reset in"); 2017 sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET; 2018 lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); 2019 2020 sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET; 2021 lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16); 2022 2023 /* 2024 * make some of the GPIO pins be outputs 2025 */ 2026 lmc_gpio_mkoutput(sc, LMC_GEP_RESET); 2027 2028 /* 2029 * RESET low to force state reset. This also forces 2030 * the transmitter clock to be internal, but we expect to reset 2031 * that later anyway. 2032 */ 2033 sc->lmc_gpio &= ~(LMC_GEP_RESET); 2034 LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio); 2035 2036 /* 2037 * hold for more than 10 microseconds 2038 */ 2039 udelay(50); 2040 2041 /* 2042 * stop driving Xilinx-related signals 2043 */ 2044 lmc_gpio_mkinput(sc, LMC_GEP_RESET); 2045 2046 /* 2047 * Call media specific init routine 2048 */ 2049 sc->lmc_media->init(sc); 2050 2051 sc->stats.resetCount++; 2052 lmc_trace(sc->lmc_device, "lmc_reset out"); 2053} 2054 2055static void lmc_dec_reset(lmc_softc_t * const sc) /*fold00*/ 2056{ 2057 u_int32_t val; 2058 lmc_trace(sc->lmc_device, "lmc_dec_reset in"); 2059 2060 /* 2061 * disable all interrupts 2062 */ 2063 sc->lmc_intrmask = 0; 2064 LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask); 2065 2066 /* 2067 * Reset the chip with a software reset command. 2068 * Wait 10 microseconds (actually 50 PCI cycles but at 2069 * 33MHz that comes to two microseconds but wait a 2070 * bit longer anyways) 2071 */ 2072 LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET); 2073 udelay(25); 2074#ifdef __sparc__ 2075 sc->lmc_busmode = LMC_CSR_READ(sc, csr_busmode); 2076 sc->lmc_busmode = 0x00100000; 2077 sc->lmc_busmode &= ~TULIP_BUSMODE_SWRESET; 2078 LMC_CSR_WRITE(sc, csr_busmode, sc->lmc_busmode); 2079#endif 2080 sc->lmc_cmdmode = LMC_CSR_READ(sc, csr_command); 2081 2082 /* 2083 * We want: 2084 * no ethernet address in frames we write 2085 * disable padding (txdesc, padding disable) 2086 * ignore runt frames (rdes0 bit 15) 2087 * no receiver watchdog or transmitter jabber timer 2088 * (csr15 bit 0,14 == 1) 2089 * if using 16-bit CRC, turn off CRC (trans desc, crc disable) 2090 */ 2091 2092 sc->lmc_cmdmode |= ( TULIP_CMD_PROMISCUOUS 2093 | TULIP_CMD_FULLDUPLEX 2094 | TULIP_CMD_PASSBADPKT 2095 | TULIP_CMD_NOHEARTBEAT 2096 | TULIP_CMD_PORTSELECT 2097 | TULIP_CMD_RECEIVEALL 2098 | TULIP_CMD_MUSTBEONE 2099 ); 2100 sc->lmc_cmdmode &= ~( TULIP_CMD_OPERMODE 2101 | TULIP_CMD_THRESHOLDCTL 2102 | TULIP_CMD_STOREFWD 2103 | TULIP_CMD_TXTHRSHLDCTL 2104 ); 2105 2106 LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode); 2107 2108 /* 2109 * disable receiver watchdog and transmit jabber 2110 */ 2111 val = LMC_CSR_READ(sc, csr_sia_general); 2112 val |= (TULIP_WATCHDOG_TXDISABLE | TULIP_WATCHDOG_RXDISABLE); 2113 LMC_CSR_WRITE(sc, csr_sia_general, val); 2114 2115 lmc_trace(sc->lmc_device, "lmc_dec_reset out"); 2116} 2117 2118static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, /*fold00*/ 2119 size_t csr_size) 2120{ 2121 lmc_trace(sc->lmc_device, "lmc_initcsrs in"); 2122 sc->lmc_csrs.csr_busmode = csr_base + 0 * csr_size; 2123 sc->lmc_csrs.csr_txpoll = csr_base + 1 * csr_size; 2124 sc->lmc_csrs.csr_rxpoll = csr_base + 2 * csr_size; 2125 sc->lmc_csrs.csr_rxlist = csr_base + 3 * csr_size; 2126 sc->lmc_csrs.csr_txlist = csr_base + 4 * csr_size; 2127 sc->lmc_csrs.csr_status = csr_base + 5 * csr_size; 2128 sc->lmc_csrs.csr_command = csr_base + 6 * csr_size; 2129 sc->lmc_csrs.csr_intr = csr_base + 7 * csr_size; 2130 sc->lmc_csrs.csr_missed_frames = csr_base + 8 * csr_size; 2131 sc->lmc_csrs.csr_9 = csr_base + 9 * csr_size; 2132 sc->lmc_csrs.csr_10 = csr_base + 10 * csr_size; 2133 sc->lmc_csrs.csr_11 = csr_base + 11 * csr_size; 2134 sc->lmc_csrs.csr_12 = csr_base + 12 * csr_size; 2135 sc->lmc_csrs.csr_13 = csr_base + 13 * csr_size; 2136 sc->lmc_csrs.csr_14 = csr_base + 14 * csr_size; 2137 sc->lmc_csrs.csr_15 = csr_base + 15 * csr_size; 2138 lmc_trace(sc->lmc_device, "lmc_initcsrs out"); 2139} 2140 2141static void lmc_driver_timeout(struct net_device *dev) { /*fold00*/ 2142 lmc_softc_t *sc; 2143 u32 csr6; 2144 unsigned long flags; 2145 2146 lmc_trace(dev, "lmc_driver_timeout in"); 2147 2148 sc = dev->priv; 2149 2150 spin_lock_irqsave(&sc->lmc_lock, flags); 2151 2152 printk("%s: Xmitter busy|\n", dev->name); 2153 2154 sc->stats.tx_tbusy_calls++ ; 2155 if (jiffies - dev->trans_start < TX_TIMEOUT) { 2156 goto bug_out; 2157 } 2158 2159 /* 2160 * Chip seems to have locked up 2161 * Reset it 2162 * This whips out all our decriptor 2163 * table and starts from scartch 2164 */ 2165 2166 LMC_EVENT_LOG(LMC_EVENT_XMTPRCTMO, 2167 LMC_CSR_READ (sc, csr_status), 2168 sc->stats.tx_ProcTimeout); 2169 2170 lmc_running_reset (dev); 2171 2172 LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0); 2173 LMC_EVENT_LOG(LMC_EVENT_RESET2, 2174 lmc_mii_readreg (sc, 0, 16), 2175 lmc_mii_readreg (sc, 0, 17)); 2176 2177 /* restart the tx processes */ 2178 csr6 = LMC_CSR_READ (sc, csr_command); 2179 LMC_CSR_WRITE (sc, csr_command, csr6 | 0x0002); 2180 LMC_CSR_WRITE (sc, csr_command, csr6 | 0x2002); 2181 2182 /* immediate transmit */ 2183 LMC_CSR_WRITE (sc, csr_txpoll, 0); 2184 2185 sc->stats.tx_errors++; 2186 sc->stats.tx_ProcTimeout++; /* -baz */ 2187 2188 dev->trans_start = jiffies; 2189 2190bug_out: 2191 2192 spin_unlock_irqrestore(&sc->lmc_lock, flags); 2193 2194 lmc_trace(dev, "lmc_driver_timout out"); 2195 2196 2197} 2198