1 /* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike) 2 Ethernet cards on Linux */ 3 /* Based on the former daynaport.c driver, by Alan Cox. Some code 4 taken from or inspired by skeleton.c by Donald Becker, acenic.c by 5 Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker. 6 7 This software may be used and distributed according to the terms of 8 the GNU Public License, incorporated herein by reference. */ 9 10 /* 2000-02-28: support added for Dayna and Kinetics cards by 11 A.G.deWijn@phys.uu.nl */ 12 /* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */ 13 /* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */ 14 /* 2001-05-15: support for Cabletron ported from old daynaport driver 15 * and fixed access to Sonic Sys card which masquerades as a Farallon 16 * by rayk@knightsmanor.org */ 17 /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */ 18 /* 2003-12-26: Make sure Asante cards always work. */ 19 20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 21 22 #include <linux/module.h> 23 #include <linux/kernel.h> 24 #include <linux/types.h> 25 #include <linux/fcntl.h> 26 #include <linux/interrupt.h> 27 #include <linux/ptrace.h> 28 #include <linux/ioport.h> 29 #include <linux/nubus.h> 30 #include <linux/in.h> 31 #include <linux/string.h> 32 #include <linux/errno.h> 33 #include <linux/init.h> 34 #include <linux/netdevice.h> 35 #include <linux/etherdevice.h> 36 #include <linux/skbuff.h> 37 #include <linux/bitops.h> 38 #include <linux/io.h> 39 40 #include <asm/dma.h> 41 #include <asm/hwtest.h> 42 #include <asm/macints.h> 43 44 static char version[] = 45 "v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n"; 46 47 #define EI_SHIFT(x) (ei_local->reg_offset[x]) 48 #define ei_inb(port) in_8(port) 49 #define ei_outb(val, port) out_8(port, val) 50 #define ei_inb_p(port) in_8(port) 51 #define ei_outb_p(val, port) out_8(port, val) 52 53 #include "lib8390.c" 54 55 #define WD_START_PG 0x00 /* First page of TX buffer */ 56 #define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */ 57 #define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */ 58 #define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG 59 /* First page of TX buffer */ 60 61 /* 62 * Unfortunately it seems we have to hardcode these for the moment 63 * Shouldn't the card know about this? 64 * Does anyone know where to read it off the card? 65 * Do we trust the data provided by the card? 66 */ 67 68 #define DAYNA_8390_BASE 0x80000 69 #define DAYNA_8390_MEM 0x00000 70 71 #define CABLETRON_8390_BASE 0x90000 72 #define CABLETRON_8390_MEM 0x00000 73 74 #define INTERLAN_8390_BASE 0xE0000 75 #define INTERLAN_8390_MEM 0xD0000 76 77 enum mac8390_type { 78 MAC8390_NONE = -1, 79 MAC8390_APPLE, 80 MAC8390_ASANTE, 81 MAC8390_FARALLON, 82 MAC8390_CABLETRON, 83 MAC8390_DAYNA, 84 MAC8390_INTERLAN, 85 MAC8390_KINETICS, 86 }; 87 88 static const char *cardname[] = { 89 "apple", 90 "asante", 91 "farallon", 92 "cabletron", 93 "dayna", 94 "interlan", 95 "kinetics", 96 }; 97 98 static const int word16[] = { 99 1, /* apple */ 100 1, /* asante */ 101 1, /* farallon */ 102 1, /* cabletron */ 103 0, /* dayna */ 104 1, /* interlan */ 105 0, /* kinetics */ 106 }; 107 108 /* on which cards do we use NuBus resources? */ 109 static const int useresources[] = { 110 1, /* apple */ 111 1, /* asante */ 112 1, /* farallon */ 113 0, /* cabletron */ 114 0, /* dayna */ 115 0, /* interlan */ 116 0, /* kinetics */ 117 }; 118 119 enum mac8390_access { 120 ACCESS_UNKNOWN = 0, 121 ACCESS_32, 122 ACCESS_16, 123 }; 124 125 extern int mac8390_memtest(struct net_device *dev); 126 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, 127 enum mac8390_type type); 128 129 static int mac8390_open(struct net_device *dev); 130 static int mac8390_close(struct net_device *dev); 131 static void mac8390_no_reset(struct net_device *dev); 132 static void interlan_reset(struct net_device *dev); 133 134 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ 135 static void sane_get_8390_hdr(struct net_device *dev, 136 struct e8390_pkt_hdr *hdr, int ring_page); 137 static void sane_block_input(struct net_device *dev, int count, 138 struct sk_buff *skb, int ring_offset); 139 static void sane_block_output(struct net_device *dev, int count, 140 const unsigned char *buf, const int start_page); 141 142 /* dayna_memcpy to and from card */ 143 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, 144 int from, int count); 145 static void dayna_memcpy_tocard(struct net_device *dev, int to, 146 const void *from, int count); 147 148 /* Dayna - Dayna/Kinetics use this */ 149 static void dayna_get_8390_hdr(struct net_device *dev, 150 struct e8390_pkt_hdr *hdr, int ring_page); 151 static void dayna_block_input(struct net_device *dev, int count, 152 struct sk_buff *skb, int ring_offset); 153 static void dayna_block_output(struct net_device *dev, int count, 154 const unsigned char *buf, int start_page); 155 156 #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c)) 157 #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c)) 158 159 #define memcmp_withio(a, b, c) memcmp((a), (void *)(b), (c)) 160 161 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ 162 static void slow_sane_get_8390_hdr(struct net_device *dev, 163 struct e8390_pkt_hdr *hdr, int ring_page); 164 static void slow_sane_block_input(struct net_device *dev, int count, 165 struct sk_buff *skb, int ring_offset); 166 static void slow_sane_block_output(struct net_device *dev, int count, 167 const unsigned char *buf, int start_page); 168 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); 169 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); 170 171 static enum mac8390_type mac8390_ident(struct nubus_rsrc *fres) 172 { 173 switch (fres->dr_sw) { 174 case NUBUS_DRSW_3COM: 175 switch (fres->dr_hw) { 176 case NUBUS_DRHW_APPLE_SONIC_NB: 177 case NUBUS_DRHW_APPLE_SONIC_LC: 178 case NUBUS_DRHW_SONNET: 179 return MAC8390_NONE; 180 default: 181 return MAC8390_APPLE; 182 } 183 break; 184 185 case NUBUS_DRSW_APPLE: 186 switch (fres->dr_hw) { 187 case NUBUS_DRHW_ASANTE_LC: 188 return MAC8390_NONE; 189 case NUBUS_DRHW_CABLETRON: 190 return MAC8390_CABLETRON; 191 default: 192 return MAC8390_APPLE; 193 } 194 break; 195 196 case NUBUS_DRSW_ASANTE: 197 return MAC8390_ASANTE; 198 break; 199 200 case NUBUS_DRSW_TECHWORKS: 201 case NUBUS_DRSW_DAYNA2: 202 case NUBUS_DRSW_DAYNA_LC: 203 if (fres->dr_hw == NUBUS_DRHW_CABLETRON) 204 return MAC8390_CABLETRON; 205 else 206 return MAC8390_APPLE; 207 break; 208 209 case NUBUS_DRSW_FARALLON: 210 return MAC8390_FARALLON; 211 break; 212 213 case NUBUS_DRSW_KINETICS: 214 switch (fres->dr_hw) { 215 case NUBUS_DRHW_INTERLAN: 216 return MAC8390_INTERLAN; 217 default: 218 return MAC8390_KINETICS; 219 } 220 break; 221 222 case NUBUS_DRSW_DAYNA: 223 /* 224 * These correspond to Dayna Sonic cards 225 * which use the macsonic driver 226 */ 227 if (fres->dr_hw == NUBUS_DRHW_SMC9194 || 228 fres->dr_hw == NUBUS_DRHW_INTERLAN) 229 return MAC8390_NONE; 230 else 231 return MAC8390_DAYNA; 232 break; 233 } 234 return MAC8390_NONE; 235 } 236 237 static enum mac8390_access mac8390_testio(unsigned long membase) 238 { 239 unsigned long outdata = 0xA5A0B5B0; 240 unsigned long indata = 0x00000000; 241 /* Try writing 32 bits */ 242 memcpy_toio(membase, &outdata, 4); 243 /* Now compare them */ 244 if (memcmp_withio(&outdata, membase, 4) == 0) 245 return ACCESS_32; 246 /* Write 16 bit output */ 247 word_memcpy_tocard(membase, &outdata, 4); 248 /* Now read it back */ 249 word_memcpy_fromcard(&indata, membase, 4); 250 if (outdata == indata) 251 return ACCESS_16; 252 return ACCESS_UNKNOWN; 253 } 254 255 static int mac8390_memsize(unsigned long membase) 256 { 257 unsigned long flags; 258 int i, j; 259 260 local_irq_save(flags); 261 /* Check up to 32K in 4K increments */ 262 for (i = 0; i < 8; i++) { 263 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); 264 265 /* Unwriteable - we have a fully decoded card and the 266 RAM end located */ 267 if (hwreg_present(m) == 0) 268 break; 269 270 /* write a distinctive byte */ 271 *m = 0xA5A0 | i; 272 /* check that we read back what we wrote */ 273 if (*m != (0xA5A0 | i)) 274 break; 275 276 /* check for partial decode and wrap */ 277 for (j = 0; j < i; j++) { 278 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); 279 if (*p != (0xA5A0 | j)) 280 break; 281 } 282 } 283 local_irq_restore(flags); 284 /* 285 * in any case, we stopped once we tried one block too many, 286 * or once we reached 32K 287 */ 288 return i * 0x1000; 289 } 290 291 static bool mac8390_rsrc_init(struct net_device *dev, 292 struct nubus_rsrc *fres, 293 enum mac8390_type cardtype) 294 { 295 struct nubus_board *board = fres->board; 296 struct nubus_dir dir; 297 struct nubus_dirent ent; 298 int offset; 299 volatile unsigned short *i; 300 301 dev->irq = SLOT2IRQ(board->slot); 302 /* This is getting to be a habit */ 303 dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20); 304 305 /* 306 * Get some Nubus info - we will trust the card's idea 307 * of where its memory and registers are. 308 */ 309 310 if (nubus_get_func_dir(fres, &dir) == -1) { 311 dev_err(&board->dev, 312 "Unable to get Nubus functional directory\n"); 313 return false; 314 } 315 316 /* Get the MAC address */ 317 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 318 dev_info(&board->dev, "MAC address resource not found\n"); 319 return false; 320 } 321 322 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); 323 324 if (useresources[cardtype] == 1) { 325 nubus_rewinddir(&dir); 326 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, 327 &ent) == -1) { 328 dev_err(&board->dev, 329 "Memory offset resource not found\n"); 330 return false; 331 } 332 nubus_get_rsrc_mem(&offset, &ent, 4); 333 dev->mem_start = dev->base_addr + offset; 334 /* yes, this is how the Apple driver does it */ 335 dev->base_addr = dev->mem_start + 0x10000; 336 nubus_rewinddir(&dir); 337 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, 338 &ent) == -1) { 339 dev_info(&board->dev, 340 "Memory length resource not found, probing\n"); 341 offset = mac8390_memsize(dev->mem_start); 342 } else { 343 nubus_get_rsrc_mem(&offset, &ent, 4); 344 } 345 dev->mem_end = dev->mem_start + offset; 346 } else { 347 switch (cardtype) { 348 case MAC8390_KINETICS: 349 case MAC8390_DAYNA: /* it's the same */ 350 dev->base_addr = (int)(board->slot_addr + 351 DAYNA_8390_BASE); 352 dev->mem_start = (int)(board->slot_addr + 353 DAYNA_8390_MEM); 354 dev->mem_end = dev->mem_start + 355 mac8390_memsize(dev->mem_start); 356 break; 357 case MAC8390_INTERLAN: 358 dev->base_addr = (int)(board->slot_addr + 359 INTERLAN_8390_BASE); 360 dev->mem_start = (int)(board->slot_addr + 361 INTERLAN_8390_MEM); 362 dev->mem_end = dev->mem_start + 363 mac8390_memsize(dev->mem_start); 364 break; 365 case MAC8390_CABLETRON: 366 dev->base_addr = (int)(board->slot_addr + 367 CABLETRON_8390_BASE); 368 dev->mem_start = (int)(board->slot_addr + 369 CABLETRON_8390_MEM); 370 /* The base address is unreadable if 0x00 371 * has been written to the command register 372 * Reset the chip by writing E8390_NODMA + 373 * E8390_PAGE0 + E8390_STOP just to be 374 * sure 375 */ 376 i = (void *)dev->base_addr; 377 *i = 0x21; 378 dev->mem_end = dev->mem_start + 379 mac8390_memsize(dev->mem_start); 380 break; 381 382 default: 383 dev_err(&board->dev, 384 "No known base address for card type\n"); 385 return false; 386 } 387 } 388 389 return true; 390 } 391 392 static int mac8390_device_probe(struct nubus_board *board) 393 { 394 struct net_device *dev; 395 int err = -ENODEV; 396 struct nubus_rsrc *fres; 397 enum mac8390_type cardtype = MAC8390_NONE; 398 399 dev = ____alloc_ei_netdev(0); 400 if (!dev) 401 return -ENOMEM; 402 403 SET_NETDEV_DEV(dev, &board->dev); 404 405 for_each_board_func_rsrc(board, fres) { 406 if (fres->category != NUBUS_CAT_NETWORK || 407 fres->type != NUBUS_TYPE_ETHERNET) 408 continue; 409 410 cardtype = mac8390_ident(fres); 411 if (cardtype == MAC8390_NONE) 412 continue; 413 414 if (mac8390_rsrc_init(dev, fres, cardtype)) 415 break; 416 } 417 if (!fres) 418 goto out; 419 420 err = mac8390_initdev(dev, board, cardtype); 421 if (err) 422 goto out; 423 424 err = register_netdev(dev); 425 if (err) 426 goto out; 427 428 nubus_set_drvdata(board, dev); 429 return 0; 430 431 out: 432 free_netdev(dev); 433 return err; 434 } 435 436 static int mac8390_device_remove(struct nubus_board *board) 437 { 438 struct net_device *dev = nubus_get_drvdata(board); 439 440 unregister_netdev(dev); 441 free_netdev(dev); 442 return 0; 443 } 444 445 static struct nubus_driver mac8390_driver = { 446 .probe = mac8390_device_probe, 447 .remove = mac8390_device_remove, 448 .driver = { 449 .name = KBUILD_MODNAME, 450 .owner = THIS_MODULE, 451 } 452 }; 453 454 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 455 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 456 MODULE_LICENSE("GPL"); 457 458 static int __init mac8390_init(void) 459 { 460 return nubus_driver_register(&mac8390_driver); 461 } 462 module_init(mac8390_init); 463 464 static void __exit mac8390_exit(void) 465 { 466 nubus_driver_unregister(&mac8390_driver); 467 } 468 module_exit(mac8390_exit); 469 470 static const struct net_device_ops mac8390_netdev_ops = { 471 .ndo_open = mac8390_open, 472 .ndo_stop = mac8390_close, 473 .ndo_start_xmit = __ei_start_xmit, 474 .ndo_tx_timeout = __ei_tx_timeout, 475 .ndo_get_stats = __ei_get_stats, 476 .ndo_set_rx_mode = __ei_set_multicast_list, 477 .ndo_validate_addr = eth_validate_addr, 478 .ndo_set_mac_address = eth_mac_addr, 479 #ifdef CONFIG_NET_POLL_CONTROLLER 480 .ndo_poll_controller = __ei_poll, 481 #endif 482 }; 483 484 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, 485 enum mac8390_type type) 486 { 487 static u32 fwrd4_offsets[16] = { 488 0, 4, 8, 12, 489 16, 20, 24, 28, 490 32, 36, 40, 44, 491 48, 52, 56, 60 492 }; 493 static u32 back4_offsets[16] = { 494 60, 56, 52, 48, 495 44, 40, 36, 32, 496 28, 24, 20, 16, 497 12, 8, 4, 0 498 }; 499 static u32 fwrd2_offsets[16] = { 500 0, 2, 4, 6, 501 8, 10, 12, 14, 502 16, 18, 20, 22, 503 24, 26, 28, 30 504 }; 505 506 int access_bitmode = 0; 507 508 /* Now fill in our stuff */ 509 dev->netdev_ops = &mac8390_netdev_ops; 510 511 /* GAR, ei_status is actually a macro even though it looks global */ 512 ei_status.name = cardname[type]; 513 ei_status.word16 = word16[type]; 514 515 /* Cabletron's TX/RX buffers are backwards */ 516 if (type == MAC8390_CABLETRON) { 517 ei_status.tx_start_page = CABLETRON_TX_START_PG; 518 ei_status.rx_start_page = CABLETRON_RX_START_PG; 519 ei_status.stop_page = CABLETRON_RX_STOP_PG; 520 ei_status.rmem_start = dev->mem_start; 521 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 522 } else { 523 ei_status.tx_start_page = WD_START_PG; 524 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 525 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 526 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 527 ei_status.rmem_end = dev->mem_end; 528 } 529 530 /* Fill in model-specific information and functions */ 531 switch (type) { 532 case MAC8390_FARALLON: 533 case MAC8390_APPLE: 534 switch (mac8390_testio(dev->mem_start)) { 535 case ACCESS_UNKNOWN: 536 dev_err(&board->dev, 537 "Don't know how to access card memory\n"); 538 return -ENODEV; 539 540 case ACCESS_16: 541 /* 16 bit card, register map is reversed */ 542 ei_status.reset_8390 = mac8390_no_reset; 543 ei_status.block_input = slow_sane_block_input; 544 ei_status.block_output = slow_sane_block_output; 545 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 546 ei_status.reg_offset = back4_offsets; 547 break; 548 549 case ACCESS_32: 550 /* 32 bit card, register map is reversed */ 551 ei_status.reset_8390 = mac8390_no_reset; 552 ei_status.block_input = sane_block_input; 553 ei_status.block_output = sane_block_output; 554 ei_status.get_8390_hdr = sane_get_8390_hdr; 555 ei_status.reg_offset = back4_offsets; 556 access_bitmode = 1; 557 break; 558 } 559 break; 560 561 case MAC8390_ASANTE: 562 /* Some Asante cards pass the 32 bit test 563 * but overwrite system memory when run at 32 bit. 564 * so we run them all at 16 bit. 565 */ 566 ei_status.reset_8390 = mac8390_no_reset; 567 ei_status.block_input = slow_sane_block_input; 568 ei_status.block_output = slow_sane_block_output; 569 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 570 ei_status.reg_offset = back4_offsets; 571 break; 572 573 case MAC8390_CABLETRON: 574 /* 16 bit card, register map is short forward */ 575 ei_status.reset_8390 = mac8390_no_reset; 576 ei_status.block_input = slow_sane_block_input; 577 ei_status.block_output = slow_sane_block_output; 578 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 579 ei_status.reg_offset = fwrd2_offsets; 580 break; 581 582 case MAC8390_DAYNA: 583 case MAC8390_KINETICS: 584 /* 16 bit memory, register map is forward */ 585 /* dayna and similar */ 586 ei_status.reset_8390 = mac8390_no_reset; 587 ei_status.block_input = dayna_block_input; 588 ei_status.block_output = dayna_block_output; 589 ei_status.get_8390_hdr = dayna_get_8390_hdr; 590 ei_status.reg_offset = fwrd4_offsets; 591 break; 592 593 case MAC8390_INTERLAN: 594 /* 16 bit memory, register map is forward */ 595 ei_status.reset_8390 = interlan_reset; 596 ei_status.block_input = slow_sane_block_input; 597 ei_status.block_output = slow_sane_block_output; 598 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 599 ei_status.reg_offset = fwrd4_offsets; 600 break; 601 602 default: 603 dev_err(&board->dev, "Unsupported card type\n"); 604 return -ENODEV; 605 } 606 607 __NS8390_init(dev, 0); 608 609 /* Good, done, now spit out some messages */ 610 dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]); 611 dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 612 dev->dev_addr, dev->irq, 613 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 614 dev->mem_start, access_bitmode ? 32 : 16); 615 return 0; 616 } 617 618 static int mac8390_open(struct net_device *dev) 619 { 620 int err; 621 622 __ei_open(dev); 623 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 624 if (err) 625 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 626 return err; 627 } 628 629 static int mac8390_close(struct net_device *dev) 630 { 631 free_irq(dev->irq, dev); 632 __ei_close(dev); 633 return 0; 634 } 635 636 static void mac8390_no_reset(struct net_device *dev) 637 { 638 struct ei_device *ei_local = netdev_priv(dev); 639 640 ei_status.txing = 0; 641 netif_info(ei_local, hw, dev, "reset not supported\n"); 642 } 643 644 static void interlan_reset(struct net_device *dev) 645 { 646 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 647 struct ei_device *ei_local = netdev_priv(dev); 648 649 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 650 jiffies); 651 ei_status.txing = 0; 652 target[0xC0000] = 0; 653 if (netif_msg_hw(ei_local)) 654 pr_cont("reset complete\n"); 655 } 656 657 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 658 /* directly from daynaport.c by Alan Cox */ 659 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 660 int count) 661 { 662 volatile unsigned char *ptr; 663 unsigned char *target = to; 664 from <<= 1; /* word, skip overhead */ 665 ptr = (unsigned char *)(dev->mem_start+from); 666 /* Leading byte? */ 667 if (from & 2) { 668 *target++ = ptr[-1]; 669 ptr += 2; 670 count--; 671 } 672 while (count >= 2) { 673 *(unsigned short *)target = *(unsigned short volatile *)ptr; 674 ptr += 4; /* skip cruft */ 675 target += 2; 676 count -= 2; 677 } 678 /* Trailing byte? */ 679 if (count) 680 *target = *ptr; 681 } 682 683 static void dayna_memcpy_tocard(struct net_device *dev, int to, 684 const void *from, int count) 685 { 686 volatile unsigned short *ptr; 687 const unsigned char *src = from; 688 to <<= 1; /* word, skip overhead */ 689 ptr = (unsigned short *)(dev->mem_start+to); 690 /* Leading byte? */ 691 if (to & 2) { /* avoid a byte write (stomps on other data) */ 692 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 693 ptr++; 694 count--; 695 } 696 while (count >= 2) { 697 *ptr++ = *(unsigned short *)src; /* Copy and */ 698 ptr++; /* skip cruft */ 699 src += 2; 700 count -= 2; 701 } 702 /* Trailing byte? */ 703 if (count) { 704 /* card doesn't like byte writes */ 705 *ptr = (*ptr & 0x00FF) | (*src << 8); 706 } 707 } 708 709 /* sane block input/output */ 710 static void sane_get_8390_hdr(struct net_device *dev, 711 struct e8390_pkt_hdr *hdr, int ring_page) 712 { 713 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 714 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4); 715 /* Fix endianness */ 716 hdr->count = swab16(hdr->count); 717 } 718 719 static void sane_block_input(struct net_device *dev, int count, 720 struct sk_buff *skb, int ring_offset) 721 { 722 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 723 unsigned long xfer_start = xfer_base + dev->mem_start; 724 725 if (xfer_start + count > ei_status.rmem_end) { 726 /* We must wrap the input move. */ 727 int semi_count = ei_status.rmem_end - xfer_start; 728 memcpy_fromio(skb->data, dev->mem_start + xfer_base, 729 semi_count); 730 count -= semi_count; 731 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start, 732 count); 733 } else { 734 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count); 735 } 736 } 737 738 static void sane_block_output(struct net_device *dev, int count, 739 const unsigned char *buf, int start_page) 740 { 741 long shmem = (start_page - WD_START_PG)<<8; 742 743 memcpy_toio(dev->mem_start + shmem, buf, count); 744 } 745 746 /* dayna block input/output */ 747 static void dayna_get_8390_hdr(struct net_device *dev, 748 struct e8390_pkt_hdr *hdr, int ring_page) 749 { 750 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 751 752 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 753 /* Fix endianness */ 754 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 755 } 756 757 static void dayna_block_input(struct net_device *dev, int count, 758 struct sk_buff *skb, int ring_offset) 759 { 760 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 761 unsigned long xfer_start = xfer_base+dev->mem_start; 762 763 /* Note the offset math is done in card memory space which is word 764 per long onto our space. */ 765 766 if (xfer_start + count > ei_status.rmem_end) { 767 /* We must wrap the input move. */ 768 int semi_count = ei_status.rmem_end - xfer_start; 769 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 770 count -= semi_count; 771 dayna_memcpy_fromcard(dev, skb->data + semi_count, 772 ei_status.rmem_start - dev->mem_start, 773 count); 774 } else { 775 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 776 } 777 } 778 779 static void dayna_block_output(struct net_device *dev, int count, 780 const unsigned char *buf, 781 int start_page) 782 { 783 long shmem = (start_page - WD_START_PG)<<8; 784 785 dayna_memcpy_tocard(dev, shmem, buf, count); 786 } 787 788 /* Cabletron block I/O */ 789 static void slow_sane_get_8390_hdr(struct net_device *dev, 790 struct e8390_pkt_hdr *hdr, 791 int ring_page) 792 { 793 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 794 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 795 /* Register endianism - fix here rather than 8390.c */ 796 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 797 } 798 799 static void slow_sane_block_input(struct net_device *dev, int count, 800 struct sk_buff *skb, int ring_offset) 801 { 802 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 803 unsigned long xfer_start = xfer_base+dev->mem_start; 804 805 if (xfer_start + count > ei_status.rmem_end) { 806 /* We must wrap the input move. */ 807 int semi_count = ei_status.rmem_end - xfer_start; 808 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 809 semi_count); 810 count -= semi_count; 811 word_memcpy_fromcard(skb->data + semi_count, 812 ei_status.rmem_start, count); 813 } else { 814 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 815 count); 816 } 817 } 818 819 static void slow_sane_block_output(struct net_device *dev, int count, 820 const unsigned char *buf, int start_page) 821 { 822 long shmem = (start_page - WD_START_PG)<<8; 823 824 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 825 } 826 827 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 828 { 829 volatile unsigned short *to = (void *)tp; 830 const unsigned short *from = fp; 831 832 count++; 833 count /= 2; 834 835 while (count--) 836 *to++ = *from++; 837 } 838 839 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 840 { 841 unsigned short *to = tp; 842 const volatile unsigned short *from = (const void *)fp; 843 844 count++; 845 count /= 2; 846 847 while (count--) 848 *to++ = *from++; 849 } 850 851 852