1/* 2 * Lance ethernet driver for the MIPS processor based 3 * DECstation family 4 * 5 * 6 * adopted from sunlance.c by Richard van den Berg 7 * 8 * Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki 9 * 10 * additional sources: 11 * - PMAD-AA TURBOchannel Ethernet Module Functional Specification, 12 * Revision 1.2 13 * 14 * History: 15 * 16 * v0.001: The kernel accepts the code and it shows the hardware address. 17 * 18 * v0.002: Removed most sparc stuff, left only some module and dma stuff. 19 * 20 * v0.003: Enhanced base address calculation from proposals by 21 * Harald Koerfgen and Thomas Riemer. 22 * 23 * v0.004: lance-regs is pointing at the right addresses, added prom 24 * check. First start of address mapping and DMA. 25 * 26 * v0.005: started to play around with LANCE-DMA. This driver will not 27 * work for non IOASIC lances. HK 28 * 29 * v0.006: added pointer arrays to lance_private and setup routine for 30 * them in dec_lance_init. HK 31 * 32 * v0.007: Big shit. The LANCE seems to use a different DMA mechanism to 33 * access the init block. This looks like one (short) word at a 34 * time, but the smallest amount the IOASIC can transfer is a 35 * (long) word. So we have a 2-2 padding here. Changed 36 * lance_init_block accordingly. The 16-16 padding for the buffers 37 * seems to be correct. HK 38 * 39 * v0.008: mods to make PMAX_LANCE work. 01/09/1999 triemer 40 * 41 * v0.009: Module support fixes, multiple interfaces support, various 42 * bits. macro 43 * 44 * v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the 45 * PMAX requirement to only use halfword accesses to the 46 * buffer. macro 47 * 48 * v0.011: Converted the PMAD to the driver model. macro 49 */ 50 51#include <linux/crc32.h> 52#include <linux/delay.h> 53#include <linux/errno.h> 54#include <linux/if_ether.h> 55#include <linux/init.h> 56#include <linux/kernel.h> 57#include <linux/module.h> 58#include <linux/netdevice.h> 59#include <linux/etherdevice.h> 60#include <linux/spinlock.h> 61#include <linux/stddef.h> 62#include <linux/string.h> 63#include <linux/tc.h> 64#include <linux/types.h> 65 66#include <asm/addrspace.h> 67#include <asm/system.h> 68 69#include <asm/dec/interrupts.h> 70#include <asm/dec/ioasic.h> 71#include <asm/dec/ioasic_addrs.h> 72#include <asm/dec/kn01.h> 73#include <asm/dec/machtype.h> 74#include <asm/dec/system.h> 75 76static char version[] __devinitdata = 77"declance.c: v0.011 by Linux MIPS DECstation task force\n"; 78 79MODULE_AUTHOR("Linux MIPS DECstation task force"); 80MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver"); 81MODULE_LICENSE("GPL"); 82 83#define __unused __attribute__ ((unused)) 84 85/* 86 * card types 87 */ 88#define ASIC_LANCE 1 89#define PMAD_LANCE 2 90#define PMAX_LANCE 3 91 92 93#define LE_CSR0 0 94#define LE_CSR1 1 95#define LE_CSR2 2 96#define LE_CSR3 3 97 98#define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ 99 100#define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ 101#define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ 102#define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ 103#define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ 104#define LE_C0_MERR 0x0800 /* ME: Memory error */ 105#define LE_C0_RINT 0x0400 /* Received interrupt */ 106#define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ 107#define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ 108#define LE_C0_INTR 0x0080 /* Interrupt or error */ 109#define LE_C0_INEA 0x0040 /* Interrupt enable */ 110#define LE_C0_RXON 0x0020 /* Receiver on */ 111#define LE_C0_TXON 0x0010 /* Transmitter on */ 112#define LE_C0_TDMD 0x0008 /* Transmitter demand */ 113#define LE_C0_STOP 0x0004 /* Stop the card */ 114#define LE_C0_STRT 0x0002 /* Start the card */ 115#define LE_C0_INIT 0x0001 /* Init the card */ 116 117#define LE_C3_BSWP 0x4 /* SWAP */ 118#define LE_C3_ACON 0x2 /* ALE Control */ 119#define LE_C3_BCON 0x1 /* Byte control */ 120 121/* Receive message descriptor 1 */ 122#define LE_R1_OWN 0x8000 /* Who owns the entry */ 123#define LE_R1_ERR 0x4000 /* Error: if FRA, OFL, CRC or BUF is set */ 124#define LE_R1_FRA 0x2000 /* FRA: Frame error */ 125#define LE_R1_OFL 0x1000 /* OFL: Frame overflow */ 126#define LE_R1_CRC 0x0800 /* CRC error */ 127#define LE_R1_BUF 0x0400 /* BUF: Buffer error */ 128#define LE_R1_SOP 0x0200 /* Start of packet */ 129#define LE_R1_EOP 0x0100 /* End of packet */ 130#define LE_R1_POK 0x0300 /* Packet is complete: SOP + EOP */ 131 132/* Transmit message descriptor 1 */ 133#define LE_T1_OWN 0x8000 /* Lance owns the packet */ 134#define LE_T1_ERR 0x4000 /* Error summary */ 135#define LE_T1_EMORE 0x1000 /* Error: more than one retry needed */ 136#define LE_T1_EONE 0x0800 /* Error: one retry needed */ 137#define LE_T1_EDEF 0x0400 /* Error: deferred */ 138#define LE_T1_SOP 0x0200 /* Start of packet */ 139#define LE_T1_EOP 0x0100 /* End of packet */ 140#define LE_T1_POK 0x0300 /* Packet is complete: SOP + EOP */ 141 142#define LE_T3_BUF 0x8000 /* Buffer error */ 143#define LE_T3_UFL 0x4000 /* Error underflow */ 144#define LE_T3_LCOL 0x1000 /* Error late collision */ 145#define LE_T3_CLOS 0x0800 /* Error carrier loss */ 146#define LE_T3_RTY 0x0400 /* Error retry */ 147#define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ 148 149/* Define: 2^4 Tx buffers and 2^4 Rx buffers */ 150 151#ifndef LANCE_LOG_TX_BUFFERS 152#define LANCE_LOG_TX_BUFFERS 4 153#define LANCE_LOG_RX_BUFFERS 4 154#endif 155 156#define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) 157#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) 158 159#define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) 160#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) 161 162#define PKT_BUF_SZ 1536 163#define RX_BUFF_SIZE PKT_BUF_SZ 164#define TX_BUFF_SIZE PKT_BUF_SZ 165 166#undef TEST_HITS 167#define ZERO 0 168 169/* 170 * The DS2100/3100 have a linear 64 kB buffer which supports halfword 171 * accesses only. Each halfword of the buffer is word-aligned in the 172 * CPU address space. 173 * 174 * The PMAD-AA has a 128 kB buffer on-board. 175 * 176 * The IOASIC LANCE devices use a shared memory region. This region 177 * as seen from the CPU is (max) 128 kB long and has to be on an 128 kB 178 * boundary. The LANCE sees this as a 64 kB long continuous memory 179 * region. 180 * 181 * The LANCE's DMA address is used as an index in this buffer and DMA 182 * takes place in bursts of eight 16-bit words which are packed into 183 * four 32-bit words by the IOASIC. This leads to a strange padding: 184 * 16 bytes of valid data followed by a 16 byte gap :-(. 185 */ 186 187struct lance_rx_desc { 188 unsigned short rmd0; /* low address of packet */ 189 unsigned short rmd1; /* high address of packet 190 and descriptor bits */ 191 short length; /* 2s complement (negative!) 192 of buffer length */ 193 unsigned short mblength; /* actual number of bytes received */ 194}; 195 196struct lance_tx_desc { 197 unsigned short tmd0; /* low address of packet */ 198 unsigned short tmd1; /* high address of packet 199 and descriptor bits */ 200 short length; /* 2s complement (negative!) 201 of buffer length */ 202 unsigned short misc; 203}; 204 205 206/* First part of the LANCE initialization block, described in databook. */ 207struct lance_init_block { 208 unsigned short mode; /* pre-set mode (reg. 15) */ 209 210 unsigned short phys_addr[3]; /* physical ethernet address */ 211 unsigned short filter[4]; /* multicast filter */ 212 213 /* Receive and transmit ring base, along with extra bits. */ 214 unsigned short rx_ptr; /* receive descriptor addr */ 215 unsigned short rx_len; /* receive len and high addr */ 216 unsigned short tx_ptr; /* transmit descriptor addr */ 217 unsigned short tx_len; /* transmit len and high addr */ 218 219 short gap[4]; 220 221 /* The buffer descriptors */ 222 struct lance_rx_desc brx_ring[RX_RING_SIZE]; 223 struct lance_tx_desc btx_ring[TX_RING_SIZE]; 224}; 225 226#define BUF_OFFSET_CPU sizeof(struct lance_init_block) 227#define BUF_OFFSET_LNC sizeof(struct lance_init_block) 228 229#define shift_off(off, type) \ 230 (type == ASIC_LANCE || type == PMAX_LANCE ? off << 1 : off) 231 232#define lib_off(rt, type) \ 233 shift_off(offsetof(struct lance_init_block, rt), type) 234 235#define lib_ptr(ib, rt, type) \ 236 ((volatile u16 *)((u8 *)(ib) + lib_off(rt, type))) 237 238#define rds_off(rt, type) \ 239 shift_off(offsetof(struct lance_rx_desc, rt), type) 240 241#define rds_ptr(rd, rt, type) \ 242 ((volatile u16 *)((u8 *)(rd) + rds_off(rt, type))) 243 244#define tds_off(rt, type) \ 245 shift_off(offsetof(struct lance_tx_desc, rt), type) 246 247#define tds_ptr(td, rt, type) \ 248 ((volatile u16 *)((u8 *)(td) + tds_off(rt, type))) 249 250struct lance_private { 251 struct net_device *next; 252 int type; 253 int dma_irq; 254 volatile struct lance_regs *ll; 255 256 spinlock_t lock; 257 258 int rx_new, tx_new; 259 int rx_old, tx_old; 260 261 struct net_device_stats stats; 262 263 unsigned short busmaster_regval; 264 265 struct timer_list multicast_timer; 266 267 /* Pointers to the ring buffers as seen from the CPU */ 268 char *rx_buf_ptr_cpu[RX_RING_SIZE]; 269 char *tx_buf_ptr_cpu[TX_RING_SIZE]; 270 271 /* Pointers to the ring buffers as seen from the LANCE */ 272 uint rx_buf_ptr_lnc[RX_RING_SIZE]; 273 uint tx_buf_ptr_lnc[TX_RING_SIZE]; 274}; 275 276#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ 277 lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ 278 lp->tx_old - lp->tx_new-1) 279 280/* The lance control ports are at an absolute address, machine and tc-slot 281 * dependent. 282 * DECstations do only 32-bit access and the LANCE uses 16 bit addresses, 283 * so we have to give the structure an extra member making rap pointing 284 * at the right address 285 */ 286struct lance_regs { 287 volatile unsigned short rdp; /* register data port */ 288 unsigned short pad; 289 volatile unsigned short rap; /* register address port */ 290}; 291 292int dec_lance_debug = 2; 293 294static struct tc_driver dec_lance_tc_driver; 295static struct net_device *root_lance_dev; 296 297static inline void writereg(volatile unsigned short *regptr, short value) 298{ 299 *regptr = value; 300 iob(); 301} 302 303/* Load the CSR registers */ 304static void load_csrs(struct lance_private *lp) 305{ 306 volatile struct lance_regs *ll = lp->ll; 307 uint leptr; 308 309 /* The address space as seen from the LANCE 310 * begins at address 0. HK 311 */ 312 leptr = 0; 313 314 writereg(&ll->rap, LE_CSR1); 315 writereg(&ll->rdp, (leptr & 0xFFFF)); 316 writereg(&ll->rap, LE_CSR2); 317 writereg(&ll->rdp, leptr >> 16); 318 writereg(&ll->rap, LE_CSR3); 319 writereg(&ll->rdp, lp->busmaster_regval); 320 321 /* Point back to csr0 */ 322 writereg(&ll->rap, LE_CSR0); 323} 324 325/* 326 * Our specialized copy routines 327 * 328 */ 329static void cp_to_buf(const int type, void *to, const void *from, int len) 330{ 331 unsigned short *tp, *fp, clen; 332 unsigned char *rtp, *rfp; 333 334 if (type == PMAD_LANCE) { 335 memcpy(to, from, len); 336 } else if (type == PMAX_LANCE) { 337 clen = len >> 1; 338 tp = (unsigned short *) to; 339 fp = (unsigned short *) from; 340 341 while (clen--) { 342 *tp++ = *fp++; 343 tp++; 344 } 345 346 clen = len & 1; 347 rtp = (unsigned char *) tp; 348 rfp = (unsigned char *) fp; 349 while (clen--) { 350 *rtp++ = *rfp++; 351 } 352 } else { 353 /* 354 * copy 16 Byte chunks 355 */ 356 clen = len >> 4; 357 tp = (unsigned short *) to; 358 fp = (unsigned short *) from; 359 while (clen--) { 360 *tp++ = *fp++; 361 *tp++ = *fp++; 362 *tp++ = *fp++; 363 *tp++ = *fp++; 364 *tp++ = *fp++; 365 *tp++ = *fp++; 366 *tp++ = *fp++; 367 *tp++ = *fp++; 368 tp += 8; 369 } 370 371 /* 372 * do the rest, if any. 373 */ 374 clen = len & 15; 375 rtp = (unsigned char *) tp; 376 rfp = (unsigned char *) fp; 377 while (clen--) { 378 *rtp++ = *rfp++; 379 } 380 } 381 382 iob(); 383} 384 385static void cp_from_buf(const int type, void *to, const void *from, int len) 386{ 387 unsigned short *tp, *fp, clen; 388 unsigned char *rtp, *rfp; 389 390 if (type == PMAD_LANCE) { 391 memcpy(to, from, len); 392 } else if (type == PMAX_LANCE) { 393 clen = len >> 1; 394 tp = (unsigned short *) to; 395 fp = (unsigned short *) from; 396 while (clen--) { 397 *tp++ = *fp++; 398 fp++; 399 } 400 401 clen = len & 1; 402 403 rtp = (unsigned char *) tp; 404 rfp = (unsigned char *) fp; 405 406 while (clen--) { 407 *rtp++ = *rfp++; 408 } 409 } else { 410 411 /* 412 * copy 16 Byte chunks 413 */ 414 clen = len >> 4; 415 tp = (unsigned short *) to; 416 fp = (unsigned short *) from; 417 while (clen--) { 418 *tp++ = *fp++; 419 *tp++ = *fp++; 420 *tp++ = *fp++; 421 *tp++ = *fp++; 422 *tp++ = *fp++; 423 *tp++ = *fp++; 424 *tp++ = *fp++; 425 *tp++ = *fp++; 426 fp += 8; 427 } 428 429 /* 430 * do the rest, if any. 431 */ 432 clen = len & 15; 433 rtp = (unsigned char *) tp; 434 rfp = (unsigned char *) fp; 435 while (clen--) { 436 *rtp++ = *rfp++; 437 } 438 439 440 } 441 442} 443 444/* Setup the Lance Rx and Tx rings */ 445static void lance_init_ring(struct net_device *dev) 446{ 447 struct lance_private *lp = netdev_priv(dev); 448 volatile u16 *ib = (volatile u16 *)dev->mem_start; 449 uint leptr; 450 int i; 451 452 /* Lock out other processes while setting up hardware */ 453 netif_stop_queue(dev); 454 lp->rx_new = lp->tx_new = 0; 455 lp->rx_old = lp->tx_old = 0; 456 457 *lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) | 458 dev->dev_addr[0]; 459 *lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) | 460 dev->dev_addr[2]; 461 *lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) | 462 dev->dev_addr[4]; 463 /* Setup the initialization block */ 464 465 /* Setup rx descriptor pointer */ 466 leptr = offsetof(struct lance_init_block, brx_ring); 467 *lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) | 468 (leptr >> 16); 469 *lib_ptr(ib, rx_ptr, lp->type) = leptr; 470 if (ZERO) 471 printk("RX ptr: %8.8x(%8.8x)\n", 472 leptr, lib_off(brx_ring, lp->type)); 473 474 /* Setup tx descriptor pointer */ 475 leptr = offsetof(struct lance_init_block, btx_ring); 476 *lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) | 477 (leptr >> 16); 478 *lib_ptr(ib, tx_ptr, lp->type) = leptr; 479 if (ZERO) 480 printk("TX ptr: %8.8x(%8.8x)\n", 481 leptr, lib_off(btx_ring, lp->type)); 482 483 if (ZERO) 484 printk("TX rings:\n"); 485 486 /* Setup the Tx ring entries */ 487 for (i = 0; i < TX_RING_SIZE; i++) { 488 leptr = lp->tx_buf_ptr_lnc[i]; 489 *lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr; 490 *lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) & 491 0xff; 492 *lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000; 493 /* The ones required by tmd2 */ 494 *lib_ptr(ib, btx_ring[i].misc, lp->type) = 0; 495 if (i < 3 && ZERO) 496 printk("%d: 0x%8.8x(0x%8.8x)\n", 497 i, leptr, (uint)lp->tx_buf_ptr_cpu[i]); 498 } 499 500 /* Setup the Rx ring entries */ 501 if (ZERO) 502 printk("RX rings:\n"); 503 for (i = 0; i < RX_RING_SIZE; i++) { 504 leptr = lp->rx_buf_ptr_lnc[i]; 505 *lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr; 506 *lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) & 507 0xff) | 508 LE_R1_OWN; 509 *lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE | 510 0xf000; 511 *lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0; 512 if (i < 3 && ZERO) 513 printk("%d: 0x%8.8x(0x%8.8x)\n", 514 i, leptr, (uint)lp->rx_buf_ptr_cpu[i]); 515 } 516 iob(); 517} 518 519static int init_restart_lance(struct lance_private *lp) 520{ 521 volatile struct lance_regs *ll = lp->ll; 522 int i; 523 524 writereg(&ll->rap, LE_CSR0); 525 writereg(&ll->rdp, LE_C0_INIT); 526 527 /* Wait for the lance to complete initialization */ 528 for (i = 0; (i < 100) && !(ll->rdp & LE_C0_IDON); i++) { 529 udelay(10); 530 } 531 if ((i == 100) || (ll->rdp & LE_C0_ERR)) { 532 printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", 533 i, ll->rdp); 534 return -1; 535 } 536 if ((ll->rdp & LE_C0_ERR)) { 537 printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", 538 i, ll->rdp); 539 return -1; 540 } 541 writereg(&ll->rdp, LE_C0_IDON); 542 writereg(&ll->rdp, LE_C0_STRT); 543 writereg(&ll->rdp, LE_C0_INEA); 544 545 return 0; 546} 547 548static int lance_rx(struct net_device *dev) 549{ 550 struct lance_private *lp = netdev_priv(dev); 551 volatile u16 *ib = (volatile u16 *)dev->mem_start; 552 volatile u16 *rd; 553 unsigned short bits; 554 int entry, len; 555 struct sk_buff *skb; 556 557#ifdef TEST_HITS 558 { 559 int i; 560 561 printk("["); 562 for (i = 0; i < RX_RING_SIZE; i++) { 563 if (i == lp->rx_new) 564 printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, 565 lp->type) & 566 LE_R1_OWN ? "_" : "X"); 567 else 568 printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, 569 lp->type) & 570 LE_R1_OWN ? "." : "1"); 571 } 572 printk("]"); 573 } 574#endif 575 576 for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type); 577 !((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN); 578 rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) { 579 entry = lp->rx_new; 580 581 /* We got an incomplete frame? */ 582 if ((bits & LE_R1_POK) != LE_R1_POK) { 583 lp->stats.rx_over_errors++; 584 lp->stats.rx_errors++; 585 } else if (bits & LE_R1_ERR) { 586 /* Count only the end frame as a rx error, 587 * not the beginning 588 */ 589 if (bits & LE_R1_BUF) 590 lp->stats.rx_fifo_errors++; 591 if (bits & LE_R1_CRC) 592 lp->stats.rx_crc_errors++; 593 if (bits & LE_R1_OFL) 594 lp->stats.rx_over_errors++; 595 if (bits & LE_R1_FRA) 596 lp->stats.rx_frame_errors++; 597 if (bits & LE_R1_EOP) 598 lp->stats.rx_errors++; 599 } else { 600 len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4; 601 skb = dev_alloc_skb(len + 2); 602 603 if (skb == 0) { 604 printk("%s: Memory squeeze, deferring packet.\n", 605 dev->name); 606 lp->stats.rx_dropped++; 607 *rds_ptr(rd, mblength, lp->type) = 0; 608 *rds_ptr(rd, rmd1, lp->type) = 609 ((lp->rx_buf_ptr_lnc[entry] >> 16) & 610 0xff) | LE_R1_OWN; 611 lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; 612 return 0; 613 } 614 lp->stats.rx_bytes += len; 615 616 skb_reserve(skb, 2); /* 16 byte align */ 617 skb_put(skb, len); /* make room */ 618 619 cp_from_buf(lp->type, skb->data, 620 (char *)lp->rx_buf_ptr_cpu[entry], len); 621 622 skb->protocol = eth_type_trans(skb, dev); 623 netif_rx(skb); 624 dev->last_rx = jiffies; 625 lp->stats.rx_packets++; 626 } 627 628 /* Return the packet to the pool */ 629 *rds_ptr(rd, mblength, lp->type) = 0; 630 *rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000; 631 *rds_ptr(rd, rmd1, lp->type) = 632 ((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN; 633 lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; 634 } 635 return 0; 636} 637 638static void lance_tx(struct net_device *dev) 639{ 640 struct lance_private *lp = netdev_priv(dev); 641 volatile u16 *ib = (volatile u16 *)dev->mem_start; 642 volatile struct lance_regs *ll = lp->ll; 643 volatile u16 *td; 644 int i, j; 645 int status; 646 647 j = lp->tx_old; 648 649 spin_lock(&lp->lock); 650 651 for (i = j; i != lp->tx_new; i = j) { 652 td = lib_ptr(ib, btx_ring[i], lp->type); 653 /* If we hit a packet not owned by us, stop */ 654 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN) 655 break; 656 657 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) { 658 status = *tds_ptr(td, misc, lp->type); 659 660 lp->stats.tx_errors++; 661 if (status & LE_T3_RTY) 662 lp->stats.tx_aborted_errors++; 663 if (status & LE_T3_LCOL) 664 lp->stats.tx_window_errors++; 665 666 if (status & LE_T3_CLOS) { 667 lp->stats.tx_carrier_errors++; 668 printk("%s: Carrier Lost\n", dev->name); 669 /* Stop the lance */ 670 writereg(&ll->rap, LE_CSR0); 671 writereg(&ll->rdp, LE_C0_STOP); 672 lance_init_ring(dev); 673 load_csrs(lp); 674 init_restart_lance(lp); 675 goto out; 676 } 677 /* Buffer errors and underflows turn off the 678 * transmitter, restart the adapter. 679 */ 680 if (status & (LE_T3_BUF | LE_T3_UFL)) { 681 lp->stats.tx_fifo_errors++; 682 683 printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 684 dev->name); 685 /* Stop the lance */ 686 writereg(&ll->rap, LE_CSR0); 687 writereg(&ll->rdp, LE_C0_STOP); 688 lance_init_ring(dev); 689 load_csrs(lp); 690 init_restart_lance(lp); 691 goto out; 692 } 693 } else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) == 694 LE_T1_POK) { 695 /* 696 * So we don't count the packet more than once. 697 */ 698 *tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK); 699 700 /* One collision before packet was sent. */ 701 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE) 702 lp->stats.collisions++; 703 704 /* More than one collision, be optimistic. */ 705 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE) 706 lp->stats.collisions += 2; 707 708 lp->stats.tx_packets++; 709 } 710 j = (j + 1) & TX_RING_MOD_MASK; 711 } 712 lp->tx_old = j; 713out: 714 if (netif_queue_stopped(dev) && 715 TX_BUFFS_AVAIL > 0) 716 netif_wake_queue(dev); 717 718 spin_unlock(&lp->lock); 719} 720 721static irqreturn_t lance_dma_merr_int(const int irq, void *dev_id) 722{ 723 struct net_device *dev = dev_id; 724 725 printk("%s: DMA error\n", dev->name); 726 return IRQ_HANDLED; 727} 728 729static irqreturn_t lance_interrupt(const int irq, void *dev_id) 730{ 731 struct net_device *dev = dev_id; 732 struct lance_private *lp = netdev_priv(dev); 733 volatile struct lance_regs *ll = lp->ll; 734 int csr0; 735 736 writereg(&ll->rap, LE_CSR0); 737 csr0 = ll->rdp; 738 739 /* Acknowledge all the interrupt sources ASAP */ 740 writereg(&ll->rdp, csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT)); 741 742 if ((csr0 & LE_C0_ERR)) { 743 /* Clear the error condition */ 744 writereg(&ll->rdp, LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | 745 LE_C0_CERR | LE_C0_MERR); 746 } 747 if (csr0 & LE_C0_RINT) 748 lance_rx(dev); 749 750 if (csr0 & LE_C0_TINT) 751 lance_tx(dev); 752 753 if (csr0 & LE_C0_BABL) 754 lp->stats.tx_errors++; 755 756 if (csr0 & LE_C0_MISS) 757 lp->stats.rx_errors++; 758 759 if (csr0 & LE_C0_MERR) { 760 printk("%s: Memory error, status %04x\n", dev->name, csr0); 761 762 writereg(&ll->rdp, LE_C0_STOP); 763 764 lance_init_ring(dev); 765 load_csrs(lp); 766 init_restart_lance(lp); 767 netif_wake_queue(dev); 768 } 769 770 writereg(&ll->rdp, LE_C0_INEA); 771 writereg(&ll->rdp, LE_C0_INEA); 772 return IRQ_HANDLED; 773} 774 775struct net_device *last_dev = 0; 776 777static int lance_open(struct net_device *dev) 778{ 779 volatile u16 *ib = (volatile u16 *)dev->mem_start; 780 struct lance_private *lp = netdev_priv(dev); 781 volatile struct lance_regs *ll = lp->ll; 782 int status = 0; 783 784 last_dev = dev; 785 786 /* Stop the Lance */ 787 writereg(&ll->rap, LE_CSR0); 788 writereg(&ll->rdp, LE_C0_STOP); 789 790 /* Set mode and clear multicast filter only at device open, 791 * so that lance_init_ring() called at any error will not 792 * forget multicast filters. 793 * 794 * BTW it is common bug in all lance drivers! --ANK 795 */ 796 *lib_ptr(ib, mode, lp->type) = 0; 797 *lib_ptr(ib, filter[0], lp->type) = 0; 798 *lib_ptr(ib, filter[1], lp->type) = 0; 799 *lib_ptr(ib, filter[2], lp->type) = 0; 800 *lib_ptr(ib, filter[3], lp->type) = 0; 801 802 lance_init_ring(dev); 803 load_csrs(lp); 804 805 netif_start_queue(dev); 806 807 /* Associate IRQ with lance_interrupt */ 808 if (request_irq(dev->irq, &lance_interrupt, 0, "lance", dev)) { 809 printk("%s: Can't get IRQ %d\n", dev->name, dev->irq); 810 return -EAGAIN; 811 } 812 if (lp->dma_irq >= 0) { 813 unsigned long flags; 814 815 if (request_irq(lp->dma_irq, &lance_dma_merr_int, 0, 816 "lance error", dev)) { 817 free_irq(dev->irq, dev); 818 printk("%s: Can't get DMA IRQ %d\n", dev->name, 819 lp->dma_irq); 820 return -EAGAIN; 821 } 822 823 spin_lock_irqsave(&ioasic_ssr_lock, flags); 824 825 fast_mb(); 826 /* Enable I/O ASIC LANCE DMA. */ 827 ioasic_write(IO_REG_SSR, 828 ioasic_read(IO_REG_SSR) | IO_SSR_LANCE_DMA_EN); 829 830 fast_mb(); 831 spin_unlock_irqrestore(&ioasic_ssr_lock, flags); 832 } 833 834 status = init_restart_lance(lp); 835 return status; 836} 837 838static int lance_close(struct net_device *dev) 839{ 840 struct lance_private *lp = netdev_priv(dev); 841 volatile struct lance_regs *ll = lp->ll; 842 843 netif_stop_queue(dev); 844 del_timer_sync(&lp->multicast_timer); 845 846 /* Stop the card */ 847 writereg(&ll->rap, LE_CSR0); 848 writereg(&ll->rdp, LE_C0_STOP); 849 850 if (lp->dma_irq >= 0) { 851 unsigned long flags; 852 853 spin_lock_irqsave(&ioasic_ssr_lock, flags); 854 855 fast_mb(); 856 /* Disable I/O ASIC LANCE DMA. */ 857 ioasic_write(IO_REG_SSR, 858 ioasic_read(IO_REG_SSR) & ~IO_SSR_LANCE_DMA_EN); 859 860 fast_iob(); 861 spin_unlock_irqrestore(&ioasic_ssr_lock, flags); 862 863 free_irq(lp->dma_irq, dev); 864 } 865 free_irq(dev->irq, dev); 866 return 0; 867} 868 869static inline int lance_reset(struct net_device *dev) 870{ 871 struct lance_private *lp = netdev_priv(dev); 872 volatile struct lance_regs *ll = lp->ll; 873 int status; 874 875 /* Stop the lance */ 876 writereg(&ll->rap, LE_CSR0); 877 writereg(&ll->rdp, LE_C0_STOP); 878 879 lance_init_ring(dev); 880 load_csrs(lp); 881 dev->trans_start = jiffies; 882 status = init_restart_lance(lp); 883 return status; 884} 885 886static void lance_tx_timeout(struct net_device *dev) 887{ 888 struct lance_private *lp = netdev_priv(dev); 889 volatile struct lance_regs *ll = lp->ll; 890 891 printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", 892 dev->name, ll->rdp); 893 lance_reset(dev); 894 netif_wake_queue(dev); 895} 896 897static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) 898{ 899 struct lance_private *lp = netdev_priv(dev); 900 volatile struct lance_regs *ll = lp->ll; 901 volatile u16 *ib = (volatile u16 *)dev->mem_start; 902 int entry, len; 903 904 len = skb->len; 905 906 if (len < ETH_ZLEN) { 907 if (skb_padto(skb, ETH_ZLEN)) 908 return 0; 909 len = ETH_ZLEN; 910 } 911 912 lp->stats.tx_bytes += len; 913 914 entry = lp->tx_new; 915 *lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len); 916 *lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0; 917 918 cp_to_buf(lp->type, (char *)lp->tx_buf_ptr_cpu[entry], skb->data, len); 919 920 /* Now, give the packet to the lance */ 921 *lib_ptr(ib, btx_ring[entry].tmd1, lp->type) = 922 ((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) | 923 (LE_T1_POK | LE_T1_OWN); 924 lp->tx_new = (entry + 1) & TX_RING_MOD_MASK; 925 926 if (TX_BUFFS_AVAIL <= 0) 927 netif_stop_queue(dev); 928 929 /* Kick the lance: transmit now */ 930 writereg(&ll->rdp, LE_C0_INEA | LE_C0_TDMD); 931 932 dev->trans_start = jiffies; 933 dev_kfree_skb(skb); 934 935 return 0; 936} 937 938static struct net_device_stats *lance_get_stats(struct net_device *dev) 939{ 940 struct lance_private *lp = netdev_priv(dev); 941 942 return &lp->stats; 943} 944 945static void lance_load_multicast(struct net_device *dev) 946{ 947 struct lance_private *lp = netdev_priv(dev); 948 volatile u16 *ib = (volatile u16 *)dev->mem_start; 949 struct dev_mc_list *dmi = dev->mc_list; 950 char *addrs; 951 int i; 952 u32 crc; 953 954 /* set all multicast bits */ 955 if (dev->flags & IFF_ALLMULTI) { 956 *lib_ptr(ib, filter[0], lp->type) = 0xffff; 957 *lib_ptr(ib, filter[1], lp->type) = 0xffff; 958 *lib_ptr(ib, filter[2], lp->type) = 0xffff; 959 *lib_ptr(ib, filter[3], lp->type) = 0xffff; 960 return; 961 } 962 /* clear the multicast filter */ 963 *lib_ptr(ib, filter[0], lp->type) = 0; 964 *lib_ptr(ib, filter[1], lp->type) = 0; 965 *lib_ptr(ib, filter[2], lp->type) = 0; 966 *lib_ptr(ib, filter[3], lp->type) = 0; 967 968 /* Add addresses */ 969 for (i = 0; i < dev->mc_count; i++) { 970 addrs = dmi->dmi_addr; 971 dmi = dmi->next; 972 973 /* multicast address? */ 974 if (!(*addrs & 1)) 975 continue; 976 977 crc = ether_crc_le(ETH_ALEN, addrs); 978 crc = crc >> 26; 979 *lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf); 980 } 981 return; 982} 983 984static void lance_set_multicast(struct net_device *dev) 985{ 986 struct lance_private *lp = netdev_priv(dev); 987 volatile u16 *ib = (volatile u16 *)dev->mem_start; 988 volatile struct lance_regs *ll = lp->ll; 989 990 if (!netif_running(dev)) 991 return; 992 993 if (lp->tx_old != lp->tx_new) { 994 mod_timer(&lp->multicast_timer, jiffies + 4 * HZ/100); 995 netif_wake_queue(dev); 996 return; 997 } 998 999 netif_stop_queue(dev); 1000 1001 writereg(&ll->rap, LE_CSR0); 1002 writereg(&ll->rdp, LE_C0_STOP); 1003 1004 lance_init_ring(dev); 1005 1006 if (dev->flags & IFF_PROMISC) { 1007 *lib_ptr(ib, mode, lp->type) |= LE_MO_PROM; 1008 } else { 1009 *lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM; 1010 lance_load_multicast(dev); 1011 } 1012 load_csrs(lp); 1013 init_restart_lance(lp); 1014 netif_wake_queue(dev); 1015} 1016 1017static void lance_set_multicast_retry(unsigned long _opaque) 1018{ 1019 struct net_device *dev = (struct net_device *) _opaque; 1020 1021 lance_set_multicast(dev); 1022} 1023 1024static int __init dec_lance_probe(struct device *bdev, const int type) 1025{ 1026 static unsigned version_printed; 1027 static const char fmt[] = "declance%d"; 1028 char name[10]; 1029 struct net_device *dev; 1030 struct lance_private *lp; 1031 volatile struct lance_regs *ll; 1032 resource_size_t start = 0, len = 0; 1033 int i, ret; 1034 unsigned long esar_base; 1035 unsigned char *esar; 1036 1037 if (dec_lance_debug && version_printed++ == 0) 1038 printk(version); 1039 1040 if (bdev) 1041 snprintf(name, sizeof(name), "%s", bdev->bus_id); 1042 else { 1043 i = 0; 1044 dev = root_lance_dev; 1045 while (dev) { 1046 i++; 1047 lp = (struct lance_private *)dev->priv; 1048 dev = lp->next; 1049 } 1050 snprintf(name, sizeof(name), fmt, i); 1051 } 1052 1053 dev = alloc_etherdev(sizeof(struct lance_private)); 1054 if (!dev) { 1055 printk(KERN_ERR "%s: Unable to allocate etherdev, aborting.\n", 1056 name); 1057 ret = -ENOMEM; 1058 goto err_out; 1059 } 1060 1061 /* 1062 * alloc_etherdev ensures the data structures used by the LANCE 1063 * are aligned. 1064 */ 1065 lp = netdev_priv(dev); 1066 spin_lock_init(&lp->lock); 1067 1068 lp->type = type; 1069 switch (type) { 1070 case ASIC_LANCE: 1071 dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE); 1072 1073 /* buffer space for the on-board LANCE shared memory */ 1074 dev->mem_start = CKSEG1ADDR(0x00020000); 1075 dev->mem_end = dev->mem_start + 0x00020000; 1076 dev->irq = dec_interrupt[DEC_IRQ_LANCE]; 1077 esar_base = CKSEG1ADDR(dec_kn_slot_base + IOASIC_ESAR); 1078 1079 memset((void *)dev->mem_start, 0, 1080 dev->mem_end - dev->mem_start); 1081 1082 /* 1083 * setup the pointer arrays, this sucks [tm] :-( 1084 */ 1085 for (i = 0; i < RX_RING_SIZE; i++) { 1086 lp->rx_buf_ptr_cpu[i] = 1087 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1088 2 * i * RX_BUFF_SIZE); 1089 lp->rx_buf_ptr_lnc[i] = 1090 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); 1091 } 1092 for (i = 0; i < TX_RING_SIZE; i++) { 1093 lp->tx_buf_ptr_cpu[i] = 1094 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1095 2 * RX_RING_SIZE * RX_BUFF_SIZE + 1096 2 * i * TX_BUFF_SIZE); 1097 lp->tx_buf_ptr_lnc[i] = 1098 (BUF_OFFSET_LNC + 1099 RX_RING_SIZE * RX_BUFF_SIZE + 1100 i * TX_BUFF_SIZE); 1101 } 1102 1103 /* Setup I/O ASIC LANCE DMA. */ 1104 lp->dma_irq = dec_interrupt[DEC_IRQ_LANCE_MERR]; 1105 ioasic_write(IO_REG_LANCE_DMA_P, 1106 CPHYSADDR(dev->mem_start) << 3); 1107 1108 break; 1109#ifdef CONFIG_TC 1110 case PMAD_LANCE: 1111 dev_set_drvdata(bdev, dev); 1112 1113 start = to_tc_dev(bdev)->resource.start; 1114 len = to_tc_dev(bdev)->resource.end - start + 1; 1115 if (!request_mem_region(start, len, bdev->bus_id)) { 1116 printk(KERN_ERR 1117 "%s: Unable to reserve MMIO resource\n", 1118 bdev->bus_id); 1119 ret = -EBUSY; 1120 goto err_out_dev; 1121 } 1122 1123 dev->mem_start = CKSEG1ADDR(start); 1124 dev->mem_end = dev->mem_start + 0x100000; 1125 dev->base_addr = dev->mem_start + 0x100000; 1126 dev->irq = to_tc_dev(bdev)->interrupt; 1127 esar_base = dev->mem_start + 0x1c0002; 1128 lp->dma_irq = -1; 1129 1130 for (i = 0; i < RX_RING_SIZE; i++) { 1131 lp->rx_buf_ptr_cpu[i] = 1132 (char *)(dev->mem_start + BUF_OFFSET_CPU + 1133 i * RX_BUFF_SIZE); 1134 lp->rx_buf_ptr_lnc[i] = 1135 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); 1136 } 1137 for (i = 0; i < TX_RING_SIZE; i++) { 1138 lp->tx_buf_ptr_cpu[i] = 1139 (char *)(dev->mem_start + BUF_OFFSET_CPU + 1140 RX_RING_SIZE * RX_BUFF_SIZE + 1141 i * TX_BUFF_SIZE); 1142 lp->tx_buf_ptr_lnc[i] = 1143 (BUF_OFFSET_LNC + 1144 RX_RING_SIZE * RX_BUFF_SIZE + 1145 i * TX_BUFF_SIZE); 1146 } 1147 1148 break; 1149#endif 1150 case PMAX_LANCE: 1151 dev->irq = dec_interrupt[DEC_IRQ_LANCE]; 1152 dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE); 1153 dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM); 1154 dev->mem_end = dev->mem_start + KN01_SLOT_SIZE; 1155 esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1); 1156 lp->dma_irq = -1; 1157 1158 /* 1159 * setup the pointer arrays, this sucks [tm] :-( 1160 */ 1161 for (i = 0; i < RX_RING_SIZE; i++) { 1162 lp->rx_buf_ptr_cpu[i] = 1163 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1164 2 * i * RX_BUFF_SIZE); 1165 lp->rx_buf_ptr_lnc[i] = 1166 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); 1167 } 1168 for (i = 0; i < TX_RING_SIZE; i++) { 1169 lp->tx_buf_ptr_cpu[i] = 1170 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1171 2 * RX_RING_SIZE * RX_BUFF_SIZE + 1172 2 * i * TX_BUFF_SIZE); 1173 lp->tx_buf_ptr_lnc[i] = 1174 (BUF_OFFSET_LNC + 1175 RX_RING_SIZE * RX_BUFF_SIZE + 1176 i * TX_BUFF_SIZE); 1177 } 1178 1179 break; 1180 1181 default: 1182 printk(KERN_ERR "%s: declance_init called with unknown type\n", 1183 name); 1184 ret = -ENODEV; 1185 goto err_out_dev; 1186 } 1187 1188 ll = (struct lance_regs *) dev->base_addr; 1189 esar = (unsigned char *) esar_base; 1190 1191 /* prom checks */ 1192 /* First, check for test pattern */ 1193 if (esar[0x60] != 0xff && esar[0x64] != 0x00 && 1194 esar[0x68] != 0x55 && esar[0x6c] != 0xaa) { 1195 printk(KERN_ERR 1196 "%s: Ethernet station address prom not found!\n", 1197 name); 1198 ret = -ENODEV; 1199 goto err_out_resource; 1200 } 1201 /* Check the prom contents */ 1202 for (i = 0; i < 8; i++) { 1203 if (esar[i * 4] != esar[0x3c - i * 4] && 1204 esar[i * 4] != esar[0x40 + i * 4] && 1205 esar[0x3c - i * 4] != esar[0x40 + i * 4]) { 1206 printk(KERN_ERR "%s: Something is wrong with the " 1207 "ethernet station address prom!\n", name); 1208 ret = -ENODEV; 1209 goto err_out_resource; 1210 } 1211 } 1212 1213 /* Copy the ethernet address to the device structure, later to the 1214 * lance initialization block so the lance gets it every time it's 1215 * (re)initialized. 1216 */ 1217 switch (type) { 1218 case ASIC_LANCE: 1219 printk("%s: IOASIC onboard LANCE, addr = ", name); 1220 break; 1221 case PMAD_LANCE: 1222 printk("%s: PMAD-AA, addr = ", name); 1223 break; 1224 case PMAX_LANCE: 1225 printk("%s: PMAX onboard LANCE, addr = ", name); 1226 break; 1227 } 1228 for (i = 0; i < 6; i++) { 1229 dev->dev_addr[i] = esar[i * 4]; 1230 printk("%2.2x%c", dev->dev_addr[i], i == 5 ? ',' : ':'); 1231 } 1232 1233 printk(" irq = %d\n", dev->irq); 1234 1235 dev->open = &lance_open; 1236 dev->stop = &lance_close; 1237 dev->hard_start_xmit = &lance_start_xmit; 1238 dev->tx_timeout = &lance_tx_timeout; 1239 dev->watchdog_timeo = 5*HZ; 1240 dev->get_stats = &lance_get_stats; 1241 dev->set_multicast_list = &lance_set_multicast; 1242 1243 /* lp->ll is the location of the registers for lance card */ 1244 lp->ll = ll; 1245 1246 /* busmaster_regval (CSR3) should be zero according to the PMAD-AA 1247 * specification. 1248 */ 1249 lp->busmaster_regval = 0; 1250 1251 dev->dma = 0; 1252 1253 /* We cannot sleep if the chip is busy during a 1254 * multicast list update event, because such events 1255 * can occur from interrupts (ex. IPv6). So we 1256 * use a timer to try again later when necessary. -DaveM 1257 */ 1258 init_timer(&lp->multicast_timer); 1259 lp->multicast_timer.data = (unsigned long) dev; 1260 lp->multicast_timer.function = &lance_set_multicast_retry; 1261 1262 ret = register_netdev(dev); 1263 if (ret) { 1264 printk(KERN_ERR 1265 "%s: Unable to register netdev, aborting.\n", name); 1266 goto err_out_resource; 1267 } 1268 1269 if (!bdev) { 1270 lp->next = root_lance_dev; 1271 root_lance_dev = dev; 1272 } 1273 1274 printk("%s: registered as %s.\n", name, dev->name); 1275 return 0; 1276 1277err_out_resource: 1278 if (bdev) 1279 release_mem_region(start, len); 1280 1281err_out_dev: 1282 free_netdev(dev); 1283 1284err_out: 1285 return ret; 1286} 1287 1288static void __exit dec_lance_remove(struct device *bdev) 1289{ 1290 struct net_device *dev = dev_get_drvdata(bdev); 1291 resource_size_t start, len; 1292 1293 unregister_netdev(dev); 1294 start = to_tc_dev(bdev)->resource.start; 1295 len = to_tc_dev(bdev)->resource.end - start + 1; 1296 release_mem_region(start, len); 1297 free_netdev(dev); 1298} 1299 1300/* Find all the lance cards on the system and initialize them */ 1301static int __init dec_lance_platform_probe(void) 1302{ 1303 int count = 0; 1304 1305 if (dec_interrupt[DEC_IRQ_LANCE] >= 0) { 1306 if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) { 1307 if (dec_lance_probe(NULL, ASIC_LANCE) >= 0) 1308 count++; 1309 } else if (!TURBOCHANNEL) { 1310 if (dec_lance_probe(NULL, PMAX_LANCE) >= 0) 1311 count++; 1312 } 1313 } 1314 1315 return (count > 0) ? 0 : -ENODEV; 1316} 1317 1318static void __exit dec_lance_platform_remove(void) 1319{ 1320 while (root_lance_dev) { 1321 struct net_device *dev = root_lance_dev; 1322 struct lance_private *lp = netdev_priv(dev); 1323 1324 unregister_netdev(dev); 1325 root_lance_dev = lp->next; 1326 free_netdev(dev); 1327 } 1328} 1329 1330#ifdef CONFIG_TC 1331static int __init dec_lance_tc_probe(struct device *dev); 1332static int __exit dec_lance_tc_remove(struct device *dev); 1333 1334static const struct tc_device_id dec_lance_tc_table[] = { 1335 { "DEC ", "PMAD-AA " }, 1336 { } 1337}; 1338MODULE_DEVICE_TABLE(tc, dec_lance_tc_table); 1339 1340static struct tc_driver dec_lance_tc_driver = { 1341 .id_table = dec_lance_tc_table, 1342 .driver = { 1343 .name = "declance", 1344 .bus = &tc_bus_type, 1345 .probe = dec_lance_tc_probe, 1346 .remove = __exit_p(dec_lance_tc_remove), 1347 }, 1348}; 1349 1350static int __init dec_lance_tc_probe(struct device *dev) 1351{ 1352 int status = dec_lance_probe(dev, PMAD_LANCE); 1353 if (!status) 1354 get_device(dev); 1355 return status; 1356} 1357 1358static int __exit dec_lance_tc_remove(struct device *dev) 1359{ 1360 put_device(dev); 1361 dec_lance_remove(dev); 1362 return 0; 1363} 1364#endif 1365 1366static int __init dec_lance_init(void) 1367{ 1368 int status; 1369 1370 status = tc_register_driver(&dec_lance_tc_driver); 1371 if (!status) 1372 dec_lance_platform_probe(); 1373 return status; 1374} 1375 1376static void __exit dec_lance_exit(void) 1377{ 1378 dec_lance_platform_remove(); 1379 tc_unregister_driver(&dec_lance_tc_driver); 1380} 1381 1382 1383module_init(dec_lance_init); 1384module_exit(dec_lance_exit); 1385