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 68 #include <asm/dec/interrupts.h> 69 #include <asm/dec/ioasic.h> 70 #include <asm/dec/ioasic_addrs.h> 71 #include <asm/dec/kn01.h> 72 #include <asm/dec/machtype.h> 73 #include <asm/dec/system.h> 74 75 static char version[] __devinitdata = 76 "declance.c: v0.011 by Linux MIPS DECstation task force\n"; 77 78 MODULE_AUTHOR("Linux MIPS DECstation task force"); 79 MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver"); 80 MODULE_LICENSE("GPL"); 81 82 #define __unused __attribute__ ((unused)) 83 84 /* 85 * card types 86 */ 87 #define ASIC_LANCE 1 88 #define PMAD_LANCE 2 89 #define PMAX_LANCE 3 90 91 92 #define LE_CSR0 0 93 #define LE_CSR1 1 94 #define LE_CSR2 2 95 #define LE_CSR3 3 96 97 #define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ 98 99 #define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ 100 #define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ 101 #define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ 102 #define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ 103 #define LE_C0_MERR 0x0800 /* ME: Memory error */ 104 #define LE_C0_RINT 0x0400 /* Received interrupt */ 105 #define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ 106 #define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ 107 #define LE_C0_INTR 0x0080 /* Interrupt or error */ 108 #define LE_C0_INEA 0x0040 /* Interrupt enable */ 109 #define LE_C0_RXON 0x0020 /* Receiver on */ 110 #define LE_C0_TXON 0x0010 /* Transmitter on */ 111 #define LE_C0_TDMD 0x0008 /* Transmitter demand */ 112 #define LE_C0_STOP 0x0004 /* Stop the card */ 113 #define LE_C0_STRT 0x0002 /* Start the card */ 114 #define LE_C0_INIT 0x0001 /* Init the card */ 115 116 #define LE_C3_BSWP 0x4 /* SWAP */ 117 #define LE_C3_ACON 0x2 /* ALE Control */ 118 #define LE_C3_BCON 0x1 /* Byte control */ 119 120 /* Receive message descriptor 1 */ 121 #define LE_R1_OWN 0x8000 /* Who owns the entry */ 122 #define LE_R1_ERR 0x4000 /* Error: if FRA, OFL, CRC or BUF is set */ 123 #define LE_R1_FRA 0x2000 /* FRA: Frame error */ 124 #define LE_R1_OFL 0x1000 /* OFL: Frame overflow */ 125 #define LE_R1_CRC 0x0800 /* CRC error */ 126 #define LE_R1_BUF 0x0400 /* BUF: Buffer error */ 127 #define LE_R1_SOP 0x0200 /* Start of packet */ 128 #define LE_R1_EOP 0x0100 /* End of packet */ 129 #define LE_R1_POK 0x0300 /* Packet is complete: SOP + EOP */ 130 131 /* Transmit message descriptor 1 */ 132 #define LE_T1_OWN 0x8000 /* Lance owns the packet */ 133 #define LE_T1_ERR 0x4000 /* Error summary */ 134 #define LE_T1_EMORE 0x1000 /* Error: more than one retry needed */ 135 #define LE_T1_EONE 0x0800 /* Error: one retry needed */ 136 #define LE_T1_EDEF 0x0400 /* Error: deferred */ 137 #define LE_T1_SOP 0x0200 /* Start of packet */ 138 #define LE_T1_EOP 0x0100 /* End of packet */ 139 #define LE_T1_POK 0x0300 /* Packet is complete: SOP + EOP */ 140 141 #define LE_T3_BUF 0x8000 /* Buffer error */ 142 #define LE_T3_UFL 0x4000 /* Error underflow */ 143 #define LE_T3_LCOL 0x1000 /* Error late collision */ 144 #define LE_T3_CLOS 0x0800 /* Error carrier loss */ 145 #define LE_T3_RTY 0x0400 /* Error retry */ 146 #define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ 147 148 /* Define: 2^4 Tx buffers and 2^4 Rx buffers */ 149 150 #ifndef LANCE_LOG_TX_BUFFERS 151 #define LANCE_LOG_TX_BUFFERS 4 152 #define LANCE_LOG_RX_BUFFERS 4 153 #endif 154 155 #define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) 156 #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) 157 158 #define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) 159 #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) 160 161 #define PKT_BUF_SZ 1536 162 #define RX_BUFF_SIZE PKT_BUF_SZ 163 #define TX_BUFF_SIZE PKT_BUF_SZ 164 165 #undef TEST_HITS 166 #define ZERO 0 167 168 /* 169 * The DS2100/3100 have a linear 64 kB buffer which supports halfword 170 * accesses only. Each halfword of the buffer is word-aligned in the 171 * CPU address space. 172 * 173 * The PMAD-AA has a 128 kB buffer on-board. 174 * 175 * The IOASIC LANCE devices use a shared memory region. This region 176 * as seen from the CPU is (max) 128 kB long and has to be on an 128 kB 177 * boundary. The LANCE sees this as a 64 kB long continuous memory 178 * region. 179 * 180 * The LANCE's DMA address is used as an index in this buffer and DMA 181 * takes place in bursts of eight 16-bit words which are packed into 182 * four 32-bit words by the IOASIC. This leads to a strange padding: 183 * 16 bytes of valid data followed by a 16 byte gap :-(. 184 */ 185 186 struct lance_rx_desc { 187 unsigned short rmd0; /* low address of packet */ 188 unsigned short rmd1; /* high address of packet 189 and descriptor bits */ 190 short length; /* 2s complement (negative!) 191 of buffer length */ 192 unsigned short mblength; /* actual number of bytes received */ 193 }; 194 195 struct lance_tx_desc { 196 unsigned short tmd0; /* low address of packet */ 197 unsigned short tmd1; /* high address of packet 198 and descriptor bits */ 199 short length; /* 2s complement (negative!) 200 of buffer length */ 201 unsigned short misc; 202 }; 203 204 205 /* First part of the LANCE initialization block, described in databook. */ 206 struct lance_init_block { 207 unsigned short mode; /* pre-set mode (reg. 15) */ 208 209 unsigned short phys_addr[3]; /* physical ethernet address */ 210 unsigned short filter[4]; /* multicast filter */ 211 212 /* Receive and transmit ring base, along with extra bits. */ 213 unsigned short rx_ptr; /* receive descriptor addr */ 214 unsigned short rx_len; /* receive len and high addr */ 215 unsigned short tx_ptr; /* transmit descriptor addr */ 216 unsigned short tx_len; /* transmit len and high addr */ 217 218 short gap[4]; 219 220 /* The buffer descriptors */ 221 struct lance_rx_desc brx_ring[RX_RING_SIZE]; 222 struct lance_tx_desc btx_ring[TX_RING_SIZE]; 223 }; 224 225 #define BUF_OFFSET_CPU sizeof(struct lance_init_block) 226 #define BUF_OFFSET_LNC sizeof(struct lance_init_block) 227 228 #define shift_off(off, type) \ 229 (type == ASIC_LANCE || type == PMAX_LANCE ? off << 1 : off) 230 231 #define lib_off(rt, type) \ 232 shift_off(offsetof(struct lance_init_block, rt), type) 233 234 #define lib_ptr(ib, rt, type) \ 235 ((volatile u16 *)((u8 *)(ib) + lib_off(rt, type))) 236 237 #define rds_off(rt, type) \ 238 shift_off(offsetof(struct lance_rx_desc, rt), type) 239 240 #define rds_ptr(rd, rt, type) \ 241 ((volatile u16 *)((u8 *)(rd) + rds_off(rt, type))) 242 243 #define tds_off(rt, type) \ 244 shift_off(offsetof(struct lance_tx_desc, rt), type) 245 246 #define tds_ptr(td, rt, type) \ 247 ((volatile u16 *)((u8 *)(td) + tds_off(rt, type))) 248 249 struct lance_private { 250 struct net_device *next; 251 int type; 252 int dma_irq; 253 volatile struct lance_regs *ll; 254 255 spinlock_t lock; 256 257 int rx_new, tx_new; 258 int rx_old, tx_old; 259 260 unsigned short busmaster_regval; 261 262 struct timer_list multicast_timer; 263 264 /* Pointers to the ring buffers as seen from the CPU */ 265 char *rx_buf_ptr_cpu[RX_RING_SIZE]; 266 char *tx_buf_ptr_cpu[TX_RING_SIZE]; 267 268 /* Pointers to the ring buffers as seen from the LANCE */ 269 uint rx_buf_ptr_lnc[RX_RING_SIZE]; 270 uint tx_buf_ptr_lnc[TX_RING_SIZE]; 271 }; 272 273 #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ 274 lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ 275 lp->tx_old - lp->tx_new-1) 276 277 /* The lance control ports are at an absolute address, machine and tc-slot 278 * dependent. 279 * DECstations do only 32-bit access and the LANCE uses 16 bit addresses, 280 * so we have to give the structure an extra member making rap pointing 281 * at the right address 282 */ 283 struct lance_regs { 284 volatile unsigned short rdp; /* register data port */ 285 unsigned short pad; 286 volatile unsigned short rap; /* register address port */ 287 }; 288 289 int dec_lance_debug = 2; 290 291 static struct tc_driver dec_lance_tc_driver; 292 static struct net_device *root_lance_dev; 293 294 static inline void writereg(volatile unsigned short *regptr, short value) 295 { 296 *regptr = value; 297 iob(); 298 } 299 300 /* Load the CSR registers */ 301 static void load_csrs(struct lance_private *lp) 302 { 303 volatile struct lance_regs *ll = lp->ll; 304 uint leptr; 305 306 /* The address space as seen from the LANCE 307 * begins at address 0. HK 308 */ 309 leptr = 0; 310 311 writereg(&ll->rap, LE_CSR1); 312 writereg(&ll->rdp, (leptr & 0xFFFF)); 313 writereg(&ll->rap, LE_CSR2); 314 writereg(&ll->rdp, leptr >> 16); 315 writereg(&ll->rap, LE_CSR3); 316 writereg(&ll->rdp, lp->busmaster_regval); 317 318 /* Point back to csr0 */ 319 writereg(&ll->rap, LE_CSR0); 320 } 321 322 /* 323 * Our specialized copy routines 324 * 325 */ 326 static void cp_to_buf(const int type, void *to, const void *from, int len) 327 { 328 unsigned short *tp; 329 const unsigned short *fp; 330 unsigned short clen; 331 unsigned char *rtp; 332 const unsigned char *rfp; 333 334 if (type == PMAD_LANCE) { 335 memcpy(to, from, len); 336 } else if (type == PMAX_LANCE) { 337 clen = len >> 1; 338 tp = to; 339 fp = from; 340 341 while (clen--) { 342 *tp++ = *fp++; 343 tp++; 344 } 345 346 clen = len & 1; 347 rtp = tp; 348 rfp = fp; 349 while (clen--) { 350 *rtp++ = *rfp++; 351 } 352 } else { 353 /* 354 * copy 16 Byte chunks 355 */ 356 clen = len >> 4; 357 tp = to; 358 fp = 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 } 384 385 static void cp_from_buf(const int type, void *to, const void *from, int len) 386 { 387 unsigned short *tp; 388 const unsigned short *fp; 389 unsigned short clen; 390 unsigned char *rtp; 391 const unsigned char *rfp; 392 393 if (type == PMAD_LANCE) { 394 memcpy(to, from, len); 395 } else if (type == PMAX_LANCE) { 396 clen = len >> 1; 397 tp = to; 398 fp = from; 399 while (clen--) { 400 *tp++ = *fp++; 401 fp++; 402 } 403 404 clen = len & 1; 405 406 rtp = tp; 407 rfp = fp; 408 409 while (clen--) { 410 *rtp++ = *rfp++; 411 } 412 } else { 413 414 /* 415 * copy 16 Byte chunks 416 */ 417 clen = len >> 4; 418 tp = to; 419 fp = from; 420 while (clen--) { 421 *tp++ = *fp++; 422 *tp++ = *fp++; 423 *tp++ = *fp++; 424 *tp++ = *fp++; 425 *tp++ = *fp++; 426 *tp++ = *fp++; 427 *tp++ = *fp++; 428 *tp++ = *fp++; 429 fp += 8; 430 } 431 432 /* 433 * do the rest, if any. 434 */ 435 clen = len & 15; 436 rtp = (unsigned char *) tp; 437 rfp = (unsigned char *) fp; 438 while (clen--) { 439 *rtp++ = *rfp++; 440 } 441 442 443 } 444 445 } 446 447 /* Setup the Lance Rx and Tx rings */ 448 static void lance_init_ring(struct net_device *dev) 449 { 450 struct lance_private *lp = netdev_priv(dev); 451 volatile u16 *ib = (volatile u16 *)dev->mem_start; 452 uint leptr; 453 int i; 454 455 /* Lock out other processes while setting up hardware */ 456 netif_stop_queue(dev); 457 lp->rx_new = lp->tx_new = 0; 458 lp->rx_old = lp->tx_old = 0; 459 460 /* Copy the ethernet address to the lance init block. 461 * XXX bit 0 of the physical address registers has to be zero 462 */ 463 *lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) | 464 dev->dev_addr[0]; 465 *lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) | 466 dev->dev_addr[2]; 467 *lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) | 468 dev->dev_addr[4]; 469 /* Setup the initialization block */ 470 471 /* Setup rx descriptor pointer */ 472 leptr = offsetof(struct lance_init_block, brx_ring); 473 *lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) | 474 (leptr >> 16); 475 *lib_ptr(ib, rx_ptr, lp->type) = leptr; 476 if (ZERO) 477 printk("RX ptr: %8.8x(%8.8x)\n", 478 leptr, lib_off(brx_ring, lp->type)); 479 480 /* Setup tx descriptor pointer */ 481 leptr = offsetof(struct lance_init_block, btx_ring); 482 *lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) | 483 (leptr >> 16); 484 *lib_ptr(ib, tx_ptr, lp->type) = leptr; 485 if (ZERO) 486 printk("TX ptr: %8.8x(%8.8x)\n", 487 leptr, lib_off(btx_ring, lp->type)); 488 489 if (ZERO) 490 printk("TX rings:\n"); 491 492 /* Setup the Tx ring entries */ 493 for (i = 0; i < TX_RING_SIZE; i++) { 494 leptr = lp->tx_buf_ptr_lnc[i]; 495 *lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr; 496 *lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) & 497 0xff; 498 *lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000; 499 /* The ones required by tmd2 */ 500 *lib_ptr(ib, btx_ring[i].misc, lp->type) = 0; 501 if (i < 3 && ZERO) 502 printk("%d: 0x%8.8x(0x%8.8x)\n", 503 i, leptr, (uint)lp->tx_buf_ptr_cpu[i]); 504 } 505 506 /* Setup the Rx ring entries */ 507 if (ZERO) 508 printk("RX rings:\n"); 509 for (i = 0; i < RX_RING_SIZE; i++) { 510 leptr = lp->rx_buf_ptr_lnc[i]; 511 *lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr; 512 *lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) & 513 0xff) | 514 LE_R1_OWN; 515 *lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE | 516 0xf000; 517 *lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0; 518 if (i < 3 && ZERO) 519 printk("%d: 0x%8.8x(0x%8.8x)\n", 520 i, leptr, (uint)lp->rx_buf_ptr_cpu[i]); 521 } 522 iob(); 523 } 524 525 static int init_restart_lance(struct lance_private *lp) 526 { 527 volatile struct lance_regs *ll = lp->ll; 528 int i; 529 530 writereg(&ll->rap, LE_CSR0); 531 writereg(&ll->rdp, LE_C0_INIT); 532 533 /* Wait for the lance to complete initialization */ 534 for (i = 0; (i < 100) && !(ll->rdp & LE_C0_IDON); i++) { 535 udelay(10); 536 } 537 if ((i == 100) || (ll->rdp & LE_C0_ERR)) { 538 printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", 539 i, ll->rdp); 540 return -1; 541 } 542 if ((ll->rdp & LE_C0_ERR)) { 543 printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", 544 i, ll->rdp); 545 return -1; 546 } 547 writereg(&ll->rdp, LE_C0_IDON); 548 writereg(&ll->rdp, LE_C0_STRT); 549 writereg(&ll->rdp, LE_C0_INEA); 550 551 return 0; 552 } 553 554 static int lance_rx(struct net_device *dev) 555 { 556 struct lance_private *lp = netdev_priv(dev); 557 volatile u16 *ib = (volatile u16 *)dev->mem_start; 558 volatile u16 *rd; 559 unsigned short bits; 560 int entry, len; 561 struct sk_buff *skb; 562 563 #ifdef TEST_HITS 564 { 565 int i; 566 567 printk("["); 568 for (i = 0; i < RX_RING_SIZE; i++) { 569 if (i == lp->rx_new) 570 printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, 571 lp->type) & 572 LE_R1_OWN ? "_" : "X"); 573 else 574 printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, 575 lp->type) & 576 LE_R1_OWN ? "." : "1"); 577 } 578 printk("]"); 579 } 580 #endif 581 582 for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type); 583 !((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN); 584 rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) { 585 entry = lp->rx_new; 586 587 /* We got an incomplete frame? */ 588 if ((bits & LE_R1_POK) != LE_R1_POK) { 589 dev->stats.rx_over_errors++; 590 dev->stats.rx_errors++; 591 } else if (bits & LE_R1_ERR) { 592 /* Count only the end frame as a rx error, 593 * not the beginning 594 */ 595 if (bits & LE_R1_BUF) 596 dev->stats.rx_fifo_errors++; 597 if (bits & LE_R1_CRC) 598 dev->stats.rx_crc_errors++; 599 if (bits & LE_R1_OFL) 600 dev->stats.rx_over_errors++; 601 if (bits & LE_R1_FRA) 602 dev->stats.rx_frame_errors++; 603 if (bits & LE_R1_EOP) 604 dev->stats.rx_errors++; 605 } else { 606 len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4; 607 skb = netdev_alloc_skb(dev, len + 2); 608 609 if (skb == 0) { 610 printk("%s: Memory squeeze, deferring packet.\n", 611 dev->name); 612 dev->stats.rx_dropped++; 613 *rds_ptr(rd, mblength, lp->type) = 0; 614 *rds_ptr(rd, rmd1, lp->type) = 615 ((lp->rx_buf_ptr_lnc[entry] >> 16) & 616 0xff) | LE_R1_OWN; 617 lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; 618 return 0; 619 } 620 dev->stats.rx_bytes += len; 621 622 skb_reserve(skb, 2); /* 16 byte align */ 623 skb_put(skb, len); /* make room */ 624 625 cp_from_buf(lp->type, skb->data, 626 (char *)lp->rx_buf_ptr_cpu[entry], len); 627 628 skb->protocol = eth_type_trans(skb, dev); 629 netif_rx(skb); 630 dev->stats.rx_packets++; 631 } 632 633 /* Return the packet to the pool */ 634 *rds_ptr(rd, mblength, lp->type) = 0; 635 *rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000; 636 *rds_ptr(rd, rmd1, lp->type) = 637 ((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN; 638 lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; 639 } 640 return 0; 641 } 642 643 static void lance_tx(struct net_device *dev) 644 { 645 struct lance_private *lp = netdev_priv(dev); 646 volatile u16 *ib = (volatile u16 *)dev->mem_start; 647 volatile struct lance_regs *ll = lp->ll; 648 volatile u16 *td; 649 int i, j; 650 int status; 651 652 j = lp->tx_old; 653 654 spin_lock(&lp->lock); 655 656 for (i = j; i != lp->tx_new; i = j) { 657 td = lib_ptr(ib, btx_ring[i], lp->type); 658 /* If we hit a packet not owned by us, stop */ 659 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN) 660 break; 661 662 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) { 663 status = *tds_ptr(td, misc, lp->type); 664 665 dev->stats.tx_errors++; 666 if (status & LE_T3_RTY) 667 dev->stats.tx_aborted_errors++; 668 if (status & LE_T3_LCOL) 669 dev->stats.tx_window_errors++; 670 671 if (status & LE_T3_CLOS) { 672 dev->stats.tx_carrier_errors++; 673 printk("%s: Carrier Lost\n", dev->name); 674 /* Stop the lance */ 675 writereg(&ll->rap, LE_CSR0); 676 writereg(&ll->rdp, LE_C0_STOP); 677 lance_init_ring(dev); 678 load_csrs(lp); 679 init_restart_lance(lp); 680 goto out; 681 } 682 /* Buffer errors and underflows turn off the 683 * transmitter, restart the adapter. 684 */ 685 if (status & (LE_T3_BUF | LE_T3_UFL)) { 686 dev->stats.tx_fifo_errors++; 687 688 printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 689 dev->name); 690 /* Stop the lance */ 691 writereg(&ll->rap, LE_CSR0); 692 writereg(&ll->rdp, LE_C0_STOP); 693 lance_init_ring(dev); 694 load_csrs(lp); 695 init_restart_lance(lp); 696 goto out; 697 } 698 } else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) == 699 LE_T1_POK) { 700 /* 701 * So we don't count the packet more than once. 702 */ 703 *tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK); 704 705 /* One collision before packet was sent. */ 706 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE) 707 dev->stats.collisions++; 708 709 /* More than one collision, be optimistic. */ 710 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE) 711 dev->stats.collisions += 2; 712 713 dev->stats.tx_packets++; 714 } 715 j = (j + 1) & TX_RING_MOD_MASK; 716 } 717 lp->tx_old = j; 718 out: 719 if (netif_queue_stopped(dev) && 720 TX_BUFFS_AVAIL > 0) 721 netif_wake_queue(dev); 722 723 spin_unlock(&lp->lock); 724 } 725 726 static irqreturn_t lance_dma_merr_int(int irq, void *dev_id) 727 { 728 struct net_device *dev = dev_id; 729 730 printk(KERN_ERR "%s: DMA error\n", dev->name); 731 return IRQ_HANDLED; 732 } 733 734 static irqreturn_t lance_interrupt(int irq, void *dev_id) 735 { 736 struct net_device *dev = dev_id; 737 struct lance_private *lp = netdev_priv(dev); 738 volatile struct lance_regs *ll = lp->ll; 739 int csr0; 740 741 writereg(&ll->rap, LE_CSR0); 742 csr0 = ll->rdp; 743 744 /* Acknowledge all the interrupt sources ASAP */ 745 writereg(&ll->rdp, csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT)); 746 747 if ((csr0 & LE_C0_ERR)) { 748 /* Clear the error condition */ 749 writereg(&ll->rdp, LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | 750 LE_C0_CERR | LE_C0_MERR); 751 } 752 if (csr0 & LE_C0_RINT) 753 lance_rx(dev); 754 755 if (csr0 & LE_C0_TINT) 756 lance_tx(dev); 757 758 if (csr0 & LE_C0_BABL) 759 dev->stats.tx_errors++; 760 761 if (csr0 & LE_C0_MISS) 762 dev->stats.rx_errors++; 763 764 if (csr0 & LE_C0_MERR) { 765 printk("%s: Memory error, status %04x\n", dev->name, csr0); 766 767 writereg(&ll->rdp, LE_C0_STOP); 768 769 lance_init_ring(dev); 770 load_csrs(lp); 771 init_restart_lance(lp); 772 netif_wake_queue(dev); 773 } 774 775 writereg(&ll->rdp, LE_C0_INEA); 776 writereg(&ll->rdp, LE_C0_INEA); 777 return IRQ_HANDLED; 778 } 779 780 static int lance_open(struct net_device *dev) 781 { 782 volatile u16 *ib = (volatile u16 *)dev->mem_start; 783 struct lance_private *lp = netdev_priv(dev); 784 volatile struct lance_regs *ll = lp->ll; 785 int status = 0; 786 787 /* Stop the Lance */ 788 writereg(&ll->rap, LE_CSR0); 789 writereg(&ll->rdp, LE_C0_STOP); 790 791 /* Set mode and clear multicast filter only at device open, 792 * so that lance_init_ring() called at any error will not 793 * forget multicast filters. 794 * 795 * BTW it is common bug in all lance drivers! --ANK 796 */ 797 *lib_ptr(ib, mode, lp->type) = 0; 798 *lib_ptr(ib, filter[0], lp->type) = 0; 799 *lib_ptr(ib, filter[1], lp->type) = 0; 800 *lib_ptr(ib, filter[2], lp->type) = 0; 801 *lib_ptr(ib, filter[3], lp->type) = 0; 802 803 lance_init_ring(dev); 804 load_csrs(lp); 805 806 netif_start_queue(dev); 807 808 /* Associate IRQ with lance_interrupt */ 809 if (request_irq(dev->irq, lance_interrupt, 0, "lance", dev)) { 810 printk("%s: Can't get IRQ %d\n", dev->name, dev->irq); 811 return -EAGAIN; 812 } 813 if (lp->dma_irq >= 0) { 814 unsigned long flags; 815 816 if (request_irq(lp->dma_irq, lance_dma_merr_int, 0, 817 "lance error", dev)) { 818 free_irq(dev->irq, dev); 819 printk("%s: Can't get DMA IRQ %d\n", dev->name, 820 lp->dma_irq); 821 return -EAGAIN; 822 } 823 824 spin_lock_irqsave(&ioasic_ssr_lock, flags); 825 826 fast_mb(); 827 /* Enable I/O ASIC LANCE DMA. */ 828 ioasic_write(IO_REG_SSR, 829 ioasic_read(IO_REG_SSR) | IO_SSR_LANCE_DMA_EN); 830 831 fast_mb(); 832 spin_unlock_irqrestore(&ioasic_ssr_lock, flags); 833 } 834 835 status = init_restart_lance(lp); 836 return status; 837 } 838 839 static int lance_close(struct net_device *dev) 840 { 841 struct lance_private *lp = netdev_priv(dev); 842 volatile struct lance_regs *ll = lp->ll; 843 844 netif_stop_queue(dev); 845 del_timer_sync(&lp->multicast_timer); 846 847 /* Stop the card */ 848 writereg(&ll->rap, LE_CSR0); 849 writereg(&ll->rdp, LE_C0_STOP); 850 851 if (lp->dma_irq >= 0) { 852 unsigned long flags; 853 854 spin_lock_irqsave(&ioasic_ssr_lock, flags); 855 856 fast_mb(); 857 /* Disable I/O ASIC LANCE DMA. */ 858 ioasic_write(IO_REG_SSR, 859 ioasic_read(IO_REG_SSR) & ~IO_SSR_LANCE_DMA_EN); 860 861 fast_iob(); 862 spin_unlock_irqrestore(&ioasic_ssr_lock, flags); 863 864 free_irq(lp->dma_irq, dev); 865 } 866 free_irq(dev->irq, dev); 867 return 0; 868 } 869 870 static inline int lance_reset(struct net_device *dev) 871 { 872 struct lance_private *lp = netdev_priv(dev); 873 volatile struct lance_regs *ll = lp->ll; 874 int status; 875 876 /* Stop the lance */ 877 writereg(&ll->rap, LE_CSR0); 878 writereg(&ll->rdp, LE_C0_STOP); 879 880 lance_init_ring(dev); 881 load_csrs(lp); 882 dev->trans_start = jiffies; /* prevent tx timeout */ 883 status = init_restart_lance(lp); 884 return status; 885 } 886 887 static void lance_tx_timeout(struct net_device *dev) 888 { 889 struct lance_private *lp = netdev_priv(dev); 890 volatile struct lance_regs *ll = lp->ll; 891 892 printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", 893 dev->name, ll->rdp); 894 lance_reset(dev); 895 netif_wake_queue(dev); 896 } 897 898 static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) 899 { 900 struct lance_private *lp = netdev_priv(dev); 901 volatile struct lance_regs *ll = lp->ll; 902 volatile u16 *ib = (volatile u16 *)dev->mem_start; 903 unsigned long flags; 904 int entry, len; 905 906 len = skb->len; 907 908 if (len < ETH_ZLEN) { 909 if (skb_padto(skb, ETH_ZLEN)) 910 return NETDEV_TX_OK; 911 len = ETH_ZLEN; 912 } 913 914 dev->stats.tx_bytes += len; 915 916 spin_lock_irqsave(&lp->lock, flags); 917 918 entry = lp->tx_new; 919 *lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len); 920 *lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0; 921 922 cp_to_buf(lp->type, (char *)lp->tx_buf_ptr_cpu[entry], skb->data, len); 923 924 /* Now, give the packet to the lance */ 925 *lib_ptr(ib, btx_ring[entry].tmd1, lp->type) = 926 ((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) | 927 (LE_T1_POK | LE_T1_OWN); 928 lp->tx_new = (entry + 1) & TX_RING_MOD_MASK; 929 930 if (TX_BUFFS_AVAIL <= 0) 931 netif_stop_queue(dev); 932 933 /* Kick the lance: transmit now */ 934 writereg(&ll->rdp, LE_C0_INEA | LE_C0_TDMD); 935 936 spin_unlock_irqrestore(&lp->lock, flags); 937 938 dev_kfree_skb(skb); 939 940 return NETDEV_TX_OK; 941 } 942 943 static void lance_load_multicast(struct net_device *dev) 944 { 945 struct lance_private *lp = netdev_priv(dev); 946 volatile u16 *ib = (volatile u16 *)dev->mem_start; 947 struct netdev_hw_addr *ha; 948 u32 crc; 949 950 /* set all multicast bits */ 951 if (dev->flags & IFF_ALLMULTI) { 952 *lib_ptr(ib, filter[0], lp->type) = 0xffff; 953 *lib_ptr(ib, filter[1], lp->type) = 0xffff; 954 *lib_ptr(ib, filter[2], lp->type) = 0xffff; 955 *lib_ptr(ib, filter[3], lp->type) = 0xffff; 956 return; 957 } 958 /* clear the multicast filter */ 959 *lib_ptr(ib, filter[0], lp->type) = 0; 960 *lib_ptr(ib, filter[1], lp->type) = 0; 961 *lib_ptr(ib, filter[2], lp->type) = 0; 962 *lib_ptr(ib, filter[3], lp->type) = 0; 963 964 /* Add addresses */ 965 netdev_for_each_mc_addr(ha, dev) { 966 crc = ether_crc_le(ETH_ALEN, ha->addr); 967 crc = crc >> 26; 968 *lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf); 969 } 970 } 971 972 static void lance_set_multicast(struct net_device *dev) 973 { 974 struct lance_private *lp = netdev_priv(dev); 975 volatile u16 *ib = (volatile u16 *)dev->mem_start; 976 volatile struct lance_regs *ll = lp->ll; 977 978 if (!netif_running(dev)) 979 return; 980 981 if (lp->tx_old != lp->tx_new) { 982 mod_timer(&lp->multicast_timer, jiffies + 4 * HZ/100); 983 netif_wake_queue(dev); 984 return; 985 } 986 987 netif_stop_queue(dev); 988 989 writereg(&ll->rap, LE_CSR0); 990 writereg(&ll->rdp, LE_C0_STOP); 991 992 lance_init_ring(dev); 993 994 if (dev->flags & IFF_PROMISC) { 995 *lib_ptr(ib, mode, lp->type) |= LE_MO_PROM; 996 } else { 997 *lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM; 998 lance_load_multicast(dev); 999 } 1000 load_csrs(lp); 1001 init_restart_lance(lp); 1002 netif_wake_queue(dev); 1003 } 1004 1005 static void lance_set_multicast_retry(unsigned long _opaque) 1006 { 1007 struct net_device *dev = (struct net_device *) _opaque; 1008 1009 lance_set_multicast(dev); 1010 } 1011 1012 static const struct net_device_ops lance_netdev_ops = { 1013 .ndo_open = lance_open, 1014 .ndo_stop = lance_close, 1015 .ndo_start_xmit = lance_start_xmit, 1016 .ndo_tx_timeout = lance_tx_timeout, 1017 .ndo_set_rx_mode = lance_set_multicast, 1018 .ndo_change_mtu = eth_change_mtu, 1019 .ndo_validate_addr = eth_validate_addr, 1020 .ndo_set_mac_address = eth_mac_addr, 1021 }; 1022 1023 static int __devinit dec_lance_probe(struct device *bdev, const int type) 1024 { 1025 static unsigned version_printed; 1026 static const char fmt[] = "declance%d"; 1027 char name[10]; 1028 struct net_device *dev; 1029 struct lance_private *lp; 1030 volatile struct lance_regs *ll; 1031 resource_size_t start = 0, len = 0; 1032 int i, ret; 1033 unsigned long esar_base; 1034 unsigned char *esar; 1035 1036 if (dec_lance_debug && version_printed++ == 0) 1037 printk(version); 1038 1039 if (bdev) 1040 snprintf(name, sizeof(name), "%s", dev_name(bdev)); 1041 else { 1042 i = 0; 1043 dev = root_lance_dev; 1044 while (dev) { 1045 i++; 1046 lp = netdev_priv(dev); 1047 dev = lp->next; 1048 } 1049 snprintf(name, sizeof(name), fmt, i); 1050 } 1051 1052 dev = alloc_etherdev(sizeof(struct lance_private)); 1053 if (!dev) { 1054 ret = -ENOMEM; 1055 goto err_out; 1056 } 1057 1058 /* 1059 * alloc_etherdev ensures the data structures used by the LANCE 1060 * are aligned. 1061 */ 1062 lp = netdev_priv(dev); 1063 spin_lock_init(&lp->lock); 1064 1065 lp->type = type; 1066 switch (type) { 1067 case ASIC_LANCE: 1068 dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE); 1069 1070 /* buffer space for the on-board LANCE shared memory */ 1071 /* 1072 * FIXME: ugly hack! 1073 */ 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 /* Workaround crash with booting KN04 2.1k from Disk */ 1080 memset((void *)dev->mem_start, 0, 1081 dev->mem_end - dev->mem_start); 1082 1083 /* 1084 * setup the pointer arrays, this sucks [tm] :-( 1085 */ 1086 for (i = 0; i < RX_RING_SIZE; i++) { 1087 lp->rx_buf_ptr_cpu[i] = 1088 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1089 2 * i * RX_BUFF_SIZE); 1090 lp->rx_buf_ptr_lnc[i] = 1091 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); 1092 } 1093 for (i = 0; i < TX_RING_SIZE; i++) { 1094 lp->tx_buf_ptr_cpu[i] = 1095 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1096 2 * RX_RING_SIZE * RX_BUFF_SIZE + 1097 2 * i * TX_BUFF_SIZE); 1098 lp->tx_buf_ptr_lnc[i] = 1099 (BUF_OFFSET_LNC + 1100 RX_RING_SIZE * RX_BUFF_SIZE + 1101 i * TX_BUFF_SIZE); 1102 } 1103 1104 /* Setup I/O ASIC LANCE DMA. */ 1105 lp->dma_irq = dec_interrupt[DEC_IRQ_LANCE_MERR]; 1106 ioasic_write(IO_REG_LANCE_DMA_P, 1107 CPHYSADDR(dev->mem_start) << 3); 1108 1109 break; 1110 #ifdef CONFIG_TC 1111 case PMAD_LANCE: 1112 dev_set_drvdata(bdev, dev); 1113 1114 start = to_tc_dev(bdev)->resource.start; 1115 len = to_tc_dev(bdev)->resource.end - start + 1; 1116 if (!request_mem_region(start, len, dev_name(bdev))) { 1117 printk(KERN_ERR 1118 "%s: Unable to reserve MMIO resource\n", 1119 dev_name(bdev)); 1120 ret = -EBUSY; 1121 goto err_out_dev; 1122 } 1123 1124 dev->mem_start = CKSEG1ADDR(start); 1125 dev->mem_end = dev->mem_start + 0x100000; 1126 dev->base_addr = dev->mem_start + 0x100000; 1127 dev->irq = to_tc_dev(bdev)->interrupt; 1128 esar_base = dev->mem_start + 0x1c0002; 1129 lp->dma_irq = -1; 1130 1131 for (i = 0; i < RX_RING_SIZE; i++) { 1132 lp->rx_buf_ptr_cpu[i] = 1133 (char *)(dev->mem_start + BUF_OFFSET_CPU + 1134 i * RX_BUFF_SIZE); 1135 lp->rx_buf_ptr_lnc[i] = 1136 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); 1137 } 1138 for (i = 0; i < TX_RING_SIZE; i++) { 1139 lp->tx_buf_ptr_cpu[i] = 1140 (char *)(dev->mem_start + BUF_OFFSET_CPU + 1141 RX_RING_SIZE * RX_BUFF_SIZE + 1142 i * TX_BUFF_SIZE); 1143 lp->tx_buf_ptr_lnc[i] = 1144 (BUF_OFFSET_LNC + 1145 RX_RING_SIZE * RX_BUFF_SIZE + 1146 i * TX_BUFF_SIZE); 1147 } 1148 1149 break; 1150 #endif 1151 case PMAX_LANCE: 1152 dev->irq = dec_interrupt[DEC_IRQ_LANCE]; 1153 dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE); 1154 dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM); 1155 dev->mem_end = dev->mem_start + KN01_SLOT_SIZE; 1156 esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1); 1157 lp->dma_irq = -1; 1158 1159 /* 1160 * setup the pointer arrays, this sucks [tm] :-( 1161 */ 1162 for (i = 0; i < RX_RING_SIZE; i++) { 1163 lp->rx_buf_ptr_cpu[i] = 1164 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1165 2 * i * RX_BUFF_SIZE); 1166 lp->rx_buf_ptr_lnc[i] = 1167 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE); 1168 } 1169 for (i = 0; i < TX_RING_SIZE; i++) { 1170 lp->tx_buf_ptr_cpu[i] = 1171 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + 1172 2 * RX_RING_SIZE * RX_BUFF_SIZE + 1173 2 * i * TX_BUFF_SIZE); 1174 lp->tx_buf_ptr_lnc[i] = 1175 (BUF_OFFSET_LNC + 1176 RX_RING_SIZE * RX_BUFF_SIZE + 1177 i * TX_BUFF_SIZE); 1178 } 1179 1180 break; 1181 1182 default: 1183 printk(KERN_ERR "%s: declance_init called with unknown type\n", 1184 name); 1185 ret = -ENODEV; 1186 goto err_out_dev; 1187 } 1188 1189 ll = (struct lance_regs *) dev->base_addr; 1190 esar = (unsigned char *) esar_base; 1191 1192 /* prom checks */ 1193 /* First, check for test pattern */ 1194 if (esar[0x60] != 0xff && esar[0x64] != 0x00 && 1195 esar[0x68] != 0x55 && esar[0x6c] != 0xaa) { 1196 printk(KERN_ERR 1197 "%s: Ethernet station address prom not found!\n", 1198 name); 1199 ret = -ENODEV; 1200 goto err_out_resource; 1201 } 1202 /* Check the prom contents */ 1203 for (i = 0; i < 8; i++) { 1204 if (esar[i * 4] != esar[0x3c - i * 4] && 1205 esar[i * 4] != esar[0x40 + i * 4] && 1206 esar[0x3c - i * 4] != esar[0x40 + i * 4]) { 1207 printk(KERN_ERR "%s: Something is wrong with the " 1208 "ethernet station address prom!\n", name); 1209 ret = -ENODEV; 1210 goto err_out_resource; 1211 } 1212 } 1213 1214 /* Copy the ethernet address to the device structure, later to the 1215 * lance initialization block so the lance gets it every time it's 1216 * (re)initialized. 1217 */ 1218 switch (type) { 1219 case ASIC_LANCE: 1220 printk("%s: IOASIC onboard LANCE", name); 1221 break; 1222 case PMAD_LANCE: 1223 printk("%s: PMAD-AA", name); 1224 break; 1225 case PMAX_LANCE: 1226 printk("%s: PMAX onboard LANCE", name); 1227 break; 1228 } 1229 for (i = 0; i < 6; i++) 1230 dev->dev_addr[i] = esar[i * 4]; 1231 1232 printk(", addr = %pM, irq = %d\n", dev->dev_addr, dev->irq); 1233 1234 dev->netdev_ops = &lance_netdev_ops; 1235 dev->watchdog_timeo = 5*HZ; 1236 1237 /* lp->ll is the location of the registers for lance card */ 1238 lp->ll = ll; 1239 1240 /* busmaster_regval (CSR3) should be zero according to the PMAD-AA 1241 * specification. 1242 */ 1243 lp->busmaster_regval = 0; 1244 1245 dev->dma = 0; 1246 1247 /* We cannot sleep if the chip is busy during a 1248 * multicast list update event, because such events 1249 * can occur from interrupts (ex. IPv6). So we 1250 * use a timer to try again later when necessary. -DaveM 1251 */ 1252 init_timer(&lp->multicast_timer); 1253 lp->multicast_timer.data = (unsigned long) dev; 1254 lp->multicast_timer.function = lance_set_multicast_retry; 1255 1256 ret = register_netdev(dev); 1257 if (ret) { 1258 printk(KERN_ERR 1259 "%s: Unable to register netdev, aborting.\n", name); 1260 goto err_out_resource; 1261 } 1262 1263 if (!bdev) { 1264 lp->next = root_lance_dev; 1265 root_lance_dev = dev; 1266 } 1267 1268 printk("%s: registered as %s.\n", name, dev->name); 1269 return 0; 1270 1271 err_out_resource: 1272 if (bdev) 1273 release_mem_region(start, len); 1274 1275 err_out_dev: 1276 free_netdev(dev); 1277 1278 err_out: 1279 return ret; 1280 } 1281 1282 static void __exit dec_lance_remove(struct device *bdev) 1283 { 1284 struct net_device *dev = dev_get_drvdata(bdev); 1285 resource_size_t start, len; 1286 1287 unregister_netdev(dev); 1288 start = to_tc_dev(bdev)->resource.start; 1289 len = to_tc_dev(bdev)->resource.end - start + 1; 1290 release_mem_region(start, len); 1291 free_netdev(dev); 1292 } 1293 1294 /* Find all the lance cards on the system and initialize them */ 1295 static int __init dec_lance_platform_probe(void) 1296 { 1297 int count = 0; 1298 1299 if (dec_interrupt[DEC_IRQ_LANCE] >= 0) { 1300 if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) { 1301 if (dec_lance_probe(NULL, ASIC_LANCE) >= 0) 1302 count++; 1303 } else if (!TURBOCHANNEL) { 1304 if (dec_lance_probe(NULL, PMAX_LANCE) >= 0) 1305 count++; 1306 } 1307 } 1308 1309 return (count > 0) ? 0 : -ENODEV; 1310 } 1311 1312 static void __exit dec_lance_platform_remove(void) 1313 { 1314 while (root_lance_dev) { 1315 struct net_device *dev = root_lance_dev; 1316 struct lance_private *lp = netdev_priv(dev); 1317 1318 unregister_netdev(dev); 1319 root_lance_dev = lp->next; 1320 free_netdev(dev); 1321 } 1322 } 1323 1324 #ifdef CONFIG_TC 1325 static int __devinit dec_lance_tc_probe(struct device *dev); 1326 static int __exit dec_lance_tc_remove(struct device *dev); 1327 1328 static const struct tc_device_id dec_lance_tc_table[] = { 1329 { "DEC ", "PMAD-AA " }, 1330 { } 1331 }; 1332 MODULE_DEVICE_TABLE(tc, dec_lance_tc_table); 1333 1334 static struct tc_driver dec_lance_tc_driver = { 1335 .id_table = dec_lance_tc_table, 1336 .driver = { 1337 .name = "declance", 1338 .bus = &tc_bus_type, 1339 .probe = dec_lance_tc_probe, 1340 .remove = __exit_p(dec_lance_tc_remove), 1341 }, 1342 }; 1343 1344 static int __devinit dec_lance_tc_probe(struct device *dev) 1345 { 1346 int status = dec_lance_probe(dev, PMAD_LANCE); 1347 if (!status) 1348 get_device(dev); 1349 return status; 1350 } 1351 1352 static int __exit dec_lance_tc_remove(struct device *dev) 1353 { 1354 put_device(dev); 1355 dec_lance_remove(dev); 1356 return 0; 1357 } 1358 #endif 1359 1360 static int __init dec_lance_init(void) 1361 { 1362 int status; 1363 1364 status = tc_register_driver(&dec_lance_tc_driver); 1365 if (!status) 1366 dec_lance_platform_probe(); 1367 return status; 1368 } 1369 1370 static void __exit dec_lance_exit(void) 1371 { 1372 dec_lance_platform_remove(); 1373 tc_unregister_driver(&dec_lance_tc_driver); 1374 } 1375 1376 1377 module_init(dec_lance_init); 1378 module_exit(dec_lance_exit); 1379