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 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ 157 static void slow_sane_get_8390_hdr(struct net_device *dev, 158 struct e8390_pkt_hdr *hdr, int ring_page); 159 static void slow_sane_block_input(struct net_device *dev, int count, 160 struct sk_buff *skb, int ring_offset); 161 static void slow_sane_block_output(struct net_device *dev, int count, 162 const unsigned char *buf, int start_page); 163 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); 164 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); 165 166 static enum mac8390_type mac8390_ident(struct nubus_rsrc *fres) 167 { 168 switch (fres->dr_sw) { 169 case NUBUS_DRSW_3COM: 170 switch (fres->dr_hw) { 171 case NUBUS_DRHW_APPLE_SONIC_NB: 172 case NUBUS_DRHW_APPLE_SONIC_LC: 173 case NUBUS_DRHW_SONNET: 174 return MAC8390_NONE; 175 default: 176 return MAC8390_APPLE; 177 } 178 break; 179 180 case NUBUS_DRSW_APPLE: 181 switch (fres->dr_hw) { 182 case NUBUS_DRHW_ASANTE_LC: 183 return MAC8390_NONE; 184 case NUBUS_DRHW_CABLETRON: 185 return MAC8390_CABLETRON; 186 default: 187 return MAC8390_APPLE; 188 } 189 break; 190 191 case NUBUS_DRSW_ASANTE: 192 return MAC8390_ASANTE; 193 break; 194 195 case NUBUS_DRSW_TECHWORKS: 196 case NUBUS_DRSW_DAYNA2: 197 case NUBUS_DRSW_DAYNA_LC: 198 if (fres->dr_hw == NUBUS_DRHW_CABLETRON) 199 return MAC8390_CABLETRON; 200 else 201 return MAC8390_APPLE; 202 break; 203 204 case NUBUS_DRSW_FARALLON: 205 return MAC8390_FARALLON; 206 break; 207 208 case NUBUS_DRSW_KINETICS: 209 switch (fres->dr_hw) { 210 case NUBUS_DRHW_INTERLAN: 211 return MAC8390_INTERLAN; 212 default: 213 return MAC8390_KINETICS; 214 } 215 break; 216 217 case NUBUS_DRSW_DAYNA: 218 /* 219 * These correspond to Dayna Sonic cards 220 * which use the macsonic driver 221 */ 222 if (fres->dr_hw == NUBUS_DRHW_SMC9194 || 223 fres->dr_hw == NUBUS_DRHW_INTERLAN) 224 return MAC8390_NONE; 225 else 226 return MAC8390_DAYNA; 227 break; 228 } 229 return MAC8390_NONE; 230 } 231 232 static enum mac8390_access mac8390_testio(unsigned long membase) 233 { 234 u32 outdata = 0xA5A0B5B0; 235 u32 indata = 0; 236 237 /* Try writing 32 bits */ 238 nubus_writel(outdata, membase); 239 /* Now read it back */ 240 indata = nubus_readl(membase); 241 if (outdata == indata) 242 return ACCESS_32; 243 244 outdata = 0xC5C0D5D0; 245 indata = 0; 246 247 /* Write 16 bit output */ 248 word_memcpy_tocard(membase, &outdata, 4); 249 /* Now read it back */ 250 word_memcpy_fromcard(&indata, membase, 4); 251 if (outdata == indata) 252 return ACCESS_16; 253 254 return ACCESS_UNKNOWN; 255 } 256 257 static int mac8390_memsize(unsigned long membase) 258 { 259 unsigned long flags; 260 int i, j; 261 262 local_irq_save(flags); 263 /* Check up to 32K in 4K increments */ 264 for (i = 0; i < 8; i++) { 265 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); 266 267 /* Unwriteable - we have a fully decoded card and the 268 RAM end located */ 269 if (hwreg_present(m) == 0) 270 break; 271 272 /* write a distinctive byte */ 273 *m = 0xA5A0 | i; 274 /* check that we read back what we wrote */ 275 if (*m != (0xA5A0 | i)) 276 break; 277 278 /* check for partial decode and wrap */ 279 for (j = 0; j < i; j++) { 280 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); 281 if (*p != (0xA5A0 | j)) 282 break; 283 } 284 } 285 local_irq_restore(flags); 286 /* 287 * in any case, we stopped once we tried one block too many, 288 * or once we reached 32K 289 */ 290 return i * 0x1000; 291 } 292 293 static bool mac8390_rsrc_init(struct net_device *dev, 294 struct nubus_rsrc *fres, 295 enum mac8390_type cardtype) 296 { 297 struct nubus_board *board = fres->board; 298 struct nubus_dir dir; 299 struct nubus_dirent ent; 300 int offset; 301 volatile unsigned short *i; 302 303 dev->irq = SLOT2IRQ(board->slot); 304 /* This is getting to be a habit */ 305 dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20); 306 307 /* 308 * Get some Nubus info - we will trust the card's idea 309 * of where its memory and registers are. 310 */ 311 312 if (nubus_get_func_dir(fres, &dir) == -1) { 313 dev_err(&board->dev, 314 "Unable to get Nubus functional directory\n"); 315 return false; 316 } 317 318 /* Get the MAC address */ 319 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 320 dev_info(&board->dev, "MAC address resource not found\n"); 321 return false; 322 } 323 324 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); 325 326 if (useresources[cardtype] == 1) { 327 nubus_rewinddir(&dir); 328 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, 329 &ent) == -1) { 330 dev_err(&board->dev, 331 "Memory offset resource not found\n"); 332 return false; 333 } 334 nubus_get_rsrc_mem(&offset, &ent, 4); 335 dev->mem_start = dev->base_addr + offset; 336 /* yes, this is how the Apple driver does it */ 337 dev->base_addr = dev->mem_start + 0x10000; 338 nubus_rewinddir(&dir); 339 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, 340 &ent) == -1) { 341 dev_info(&board->dev, 342 "Memory length resource not found, probing\n"); 343 offset = mac8390_memsize(dev->mem_start); 344 } else { 345 nubus_get_rsrc_mem(&offset, &ent, 4); 346 } 347 dev->mem_end = dev->mem_start + offset; 348 } else { 349 switch (cardtype) { 350 case MAC8390_KINETICS: 351 case MAC8390_DAYNA: /* it's the same */ 352 dev->base_addr = (int)(board->slot_addr + 353 DAYNA_8390_BASE); 354 dev->mem_start = (int)(board->slot_addr + 355 DAYNA_8390_MEM); 356 dev->mem_end = dev->mem_start + 357 mac8390_memsize(dev->mem_start); 358 break; 359 case MAC8390_INTERLAN: 360 dev->base_addr = (int)(board->slot_addr + 361 INTERLAN_8390_BASE); 362 dev->mem_start = (int)(board->slot_addr + 363 INTERLAN_8390_MEM); 364 dev->mem_end = dev->mem_start + 365 mac8390_memsize(dev->mem_start); 366 break; 367 case MAC8390_CABLETRON: 368 dev->base_addr = (int)(board->slot_addr + 369 CABLETRON_8390_BASE); 370 dev->mem_start = (int)(board->slot_addr + 371 CABLETRON_8390_MEM); 372 /* The base address is unreadable if 0x00 373 * has been written to the command register 374 * Reset the chip by writing E8390_NODMA + 375 * E8390_PAGE0 + E8390_STOP just to be 376 * sure 377 */ 378 i = (void *)dev->base_addr; 379 *i = 0x21; 380 dev->mem_end = dev->mem_start + 381 mac8390_memsize(dev->mem_start); 382 break; 383 384 default: 385 dev_err(&board->dev, 386 "No known base address for card type\n"); 387 return false; 388 } 389 } 390 391 return true; 392 } 393 394 static int mac8390_device_probe(struct nubus_board *board) 395 { 396 struct net_device *dev; 397 int err = -ENODEV; 398 struct nubus_rsrc *fres; 399 enum mac8390_type cardtype = MAC8390_NONE; 400 401 dev = ____alloc_ei_netdev(0); 402 if (!dev) 403 return -ENOMEM; 404 405 SET_NETDEV_DEV(dev, &board->dev); 406 407 for_each_board_func_rsrc(board, fres) { 408 if (fres->category != NUBUS_CAT_NETWORK || 409 fres->type != NUBUS_TYPE_ETHERNET) 410 continue; 411 412 cardtype = mac8390_ident(fres); 413 if (cardtype == MAC8390_NONE) 414 continue; 415 416 if (mac8390_rsrc_init(dev, fres, cardtype)) 417 break; 418 } 419 if (!fres) 420 goto out; 421 422 err = mac8390_initdev(dev, board, cardtype); 423 if (err) 424 goto out; 425 426 err = register_netdev(dev); 427 if (err) 428 goto out; 429 430 nubus_set_drvdata(board, dev); 431 return 0; 432 433 out: 434 free_netdev(dev); 435 return err; 436 } 437 438 static int mac8390_device_remove(struct nubus_board *board) 439 { 440 struct net_device *dev = nubus_get_drvdata(board); 441 442 unregister_netdev(dev); 443 free_netdev(dev); 444 return 0; 445 } 446 447 static struct nubus_driver mac8390_driver = { 448 .probe = mac8390_device_probe, 449 .remove = mac8390_device_remove, 450 .driver = { 451 .name = KBUILD_MODNAME, 452 .owner = THIS_MODULE, 453 } 454 }; 455 456 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 457 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 458 MODULE_LICENSE("GPL"); 459 460 static int __init mac8390_init(void) 461 { 462 return nubus_driver_register(&mac8390_driver); 463 } 464 module_init(mac8390_init); 465 466 static void __exit mac8390_exit(void) 467 { 468 nubus_driver_unregister(&mac8390_driver); 469 } 470 module_exit(mac8390_exit); 471 472 static const struct net_device_ops mac8390_netdev_ops = { 473 .ndo_open = mac8390_open, 474 .ndo_stop = mac8390_close, 475 .ndo_start_xmit = __ei_start_xmit, 476 .ndo_tx_timeout = __ei_tx_timeout, 477 .ndo_get_stats = __ei_get_stats, 478 .ndo_set_rx_mode = __ei_set_multicast_list, 479 .ndo_validate_addr = eth_validate_addr, 480 .ndo_set_mac_address = eth_mac_addr, 481 #ifdef CONFIG_NET_POLL_CONTROLLER 482 .ndo_poll_controller = __ei_poll, 483 #endif 484 }; 485 486 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, 487 enum mac8390_type type) 488 { 489 static u32 fwrd4_offsets[16] = { 490 0, 4, 8, 12, 491 16, 20, 24, 28, 492 32, 36, 40, 44, 493 48, 52, 56, 60 494 }; 495 static u32 back4_offsets[16] = { 496 60, 56, 52, 48, 497 44, 40, 36, 32, 498 28, 24, 20, 16, 499 12, 8, 4, 0 500 }; 501 static u32 fwrd2_offsets[16] = { 502 0, 2, 4, 6, 503 8, 10, 12, 14, 504 16, 18, 20, 22, 505 24, 26, 28, 30 506 }; 507 508 int access_bitmode = 0; 509 510 /* Now fill in our stuff */ 511 dev->netdev_ops = &mac8390_netdev_ops; 512 513 /* GAR, ei_status is actually a macro even though it looks global */ 514 ei_status.name = cardname[type]; 515 ei_status.word16 = word16[type]; 516 517 /* Cabletron's TX/RX buffers are backwards */ 518 if (type == MAC8390_CABLETRON) { 519 ei_status.tx_start_page = CABLETRON_TX_START_PG; 520 ei_status.rx_start_page = CABLETRON_RX_START_PG; 521 ei_status.stop_page = CABLETRON_RX_STOP_PG; 522 ei_status.rmem_start = dev->mem_start; 523 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 524 } else { 525 ei_status.tx_start_page = WD_START_PG; 526 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 527 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 528 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 529 ei_status.rmem_end = dev->mem_end; 530 } 531 532 /* Fill in model-specific information and functions */ 533 switch (type) { 534 case MAC8390_FARALLON: 535 case MAC8390_APPLE: 536 switch (mac8390_testio(dev->mem_start)) { 537 case ACCESS_UNKNOWN: 538 dev_err(&board->dev, 539 "Don't know how to access card memory\n"); 540 return -ENODEV; 541 542 case ACCESS_16: 543 /* 16 bit card, register map is reversed */ 544 ei_status.reset_8390 = mac8390_no_reset; 545 ei_status.block_input = slow_sane_block_input; 546 ei_status.block_output = slow_sane_block_output; 547 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 548 ei_status.reg_offset = back4_offsets; 549 break; 550 551 case ACCESS_32: 552 /* 32 bit card, register map is reversed */ 553 ei_status.reset_8390 = mac8390_no_reset; 554 ei_status.block_input = sane_block_input; 555 ei_status.block_output = sane_block_output; 556 ei_status.get_8390_hdr = sane_get_8390_hdr; 557 ei_status.reg_offset = back4_offsets; 558 access_bitmode = 1; 559 break; 560 } 561 break; 562 563 case MAC8390_ASANTE: 564 /* Some Asante cards pass the 32 bit test 565 * but overwrite system memory when run at 32 bit. 566 * so we run them all at 16 bit. 567 */ 568 ei_status.reset_8390 = mac8390_no_reset; 569 ei_status.block_input = slow_sane_block_input; 570 ei_status.block_output = slow_sane_block_output; 571 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 572 ei_status.reg_offset = back4_offsets; 573 break; 574 575 case MAC8390_CABLETRON: 576 /* 16 bit card, register map is short forward */ 577 ei_status.reset_8390 = mac8390_no_reset; 578 ei_status.block_input = slow_sane_block_input; 579 ei_status.block_output = slow_sane_block_output; 580 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 581 ei_status.reg_offset = fwrd2_offsets; 582 break; 583 584 case MAC8390_DAYNA: 585 case MAC8390_KINETICS: 586 /* 16 bit memory, register map is forward */ 587 /* dayna and similar */ 588 ei_status.reset_8390 = mac8390_no_reset; 589 ei_status.block_input = dayna_block_input; 590 ei_status.block_output = dayna_block_output; 591 ei_status.get_8390_hdr = dayna_get_8390_hdr; 592 ei_status.reg_offset = fwrd4_offsets; 593 break; 594 595 case MAC8390_INTERLAN: 596 /* 16 bit memory, register map is forward */ 597 ei_status.reset_8390 = interlan_reset; 598 ei_status.block_input = slow_sane_block_input; 599 ei_status.block_output = slow_sane_block_output; 600 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 601 ei_status.reg_offset = fwrd4_offsets; 602 break; 603 604 default: 605 dev_err(&board->dev, "Unsupported card type\n"); 606 return -ENODEV; 607 } 608 609 __NS8390_init(dev, 0); 610 611 /* Good, done, now spit out some messages */ 612 dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]); 613 dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 614 dev->dev_addr, dev->irq, 615 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 616 dev->mem_start, access_bitmode ? 32 : 16); 617 return 0; 618 } 619 620 static int mac8390_open(struct net_device *dev) 621 { 622 int err; 623 624 __ei_open(dev); 625 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 626 if (err) 627 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 628 return err; 629 } 630 631 static int mac8390_close(struct net_device *dev) 632 { 633 free_irq(dev->irq, dev); 634 __ei_close(dev); 635 return 0; 636 } 637 638 static void mac8390_no_reset(struct net_device *dev) 639 { 640 struct ei_device *ei_local = netdev_priv(dev); 641 642 ei_status.txing = 0; 643 netif_info(ei_local, hw, dev, "reset not supported\n"); 644 } 645 646 static void interlan_reset(struct net_device *dev) 647 { 648 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 649 struct ei_device *ei_local = netdev_priv(dev); 650 651 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 652 jiffies); 653 ei_status.txing = 0; 654 target[0xC0000] = 0; 655 if (netif_msg_hw(ei_local)) 656 pr_cont("reset complete\n"); 657 } 658 659 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 660 /* directly from daynaport.c by Alan Cox */ 661 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 662 int count) 663 { 664 volatile unsigned char *ptr; 665 unsigned char *target = to; 666 from <<= 1; /* word, skip overhead */ 667 ptr = (unsigned char *)(dev->mem_start+from); 668 /* Leading byte? */ 669 if (from & 2) { 670 *target++ = ptr[-1]; 671 ptr += 2; 672 count--; 673 } 674 while (count >= 2) { 675 *(unsigned short *)target = *(unsigned short volatile *)ptr; 676 ptr += 4; /* skip cruft */ 677 target += 2; 678 count -= 2; 679 } 680 /* Trailing byte? */ 681 if (count) 682 *target = *ptr; 683 } 684 685 static void dayna_memcpy_tocard(struct net_device *dev, int to, 686 const void *from, int count) 687 { 688 volatile unsigned short *ptr; 689 const unsigned char *src = from; 690 to <<= 1; /* word, skip overhead */ 691 ptr = (unsigned short *)(dev->mem_start+to); 692 /* Leading byte? */ 693 if (to & 2) { /* avoid a byte write (stomps on other data) */ 694 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 695 ptr++; 696 count--; 697 } 698 while (count >= 2) { 699 *ptr++ = *(unsigned short *)src; /* Copy and */ 700 ptr++; /* skip cruft */ 701 src += 2; 702 count -= 2; 703 } 704 /* Trailing byte? */ 705 if (count) { 706 /* card doesn't like byte writes */ 707 *ptr = (*ptr & 0x00FF) | (*src << 8); 708 } 709 } 710 711 /* sane block input/output */ 712 static void sane_get_8390_hdr(struct net_device *dev, 713 struct e8390_pkt_hdr *hdr, int ring_page) 714 { 715 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 716 memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4); 717 /* Fix endianness */ 718 hdr->count = swab16(hdr->count); 719 } 720 721 static void sane_block_input(struct net_device *dev, int count, 722 struct sk_buff *skb, int ring_offset) 723 { 724 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 725 unsigned long xfer_start = xfer_base + dev->mem_start; 726 727 if (xfer_start + count > ei_status.rmem_end) { 728 /* We must wrap the input move. */ 729 int semi_count = ei_status.rmem_end - xfer_start; 730 memcpy_fromio(skb->data, 731 (void __iomem *)dev->mem_start + xfer_base, 732 semi_count); 733 count -= semi_count; 734 memcpy_fromio(skb->data + semi_count, 735 (void __iomem *)ei_status.rmem_start, count); 736 } else { 737 memcpy_fromio(skb->data, 738 (void __iomem *)dev->mem_start + xfer_base, 739 count); 740 } 741 } 742 743 static void sane_block_output(struct net_device *dev, int count, 744 const unsigned char *buf, int start_page) 745 { 746 long shmem = (start_page - WD_START_PG)<<8; 747 748 memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count); 749 } 750 751 /* dayna block input/output */ 752 static void dayna_get_8390_hdr(struct net_device *dev, 753 struct e8390_pkt_hdr *hdr, int ring_page) 754 { 755 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 756 757 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 758 /* Fix endianness */ 759 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 760 } 761 762 static void dayna_block_input(struct net_device *dev, int count, 763 struct sk_buff *skb, int ring_offset) 764 { 765 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 766 unsigned long xfer_start = xfer_base+dev->mem_start; 767 768 /* Note the offset math is done in card memory space which is word 769 per long onto our space. */ 770 771 if (xfer_start + count > ei_status.rmem_end) { 772 /* We must wrap the input move. */ 773 int semi_count = ei_status.rmem_end - xfer_start; 774 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 775 count -= semi_count; 776 dayna_memcpy_fromcard(dev, skb->data + semi_count, 777 ei_status.rmem_start - dev->mem_start, 778 count); 779 } else { 780 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 781 } 782 } 783 784 static void dayna_block_output(struct net_device *dev, int count, 785 const unsigned char *buf, 786 int start_page) 787 { 788 long shmem = (start_page - WD_START_PG)<<8; 789 790 dayna_memcpy_tocard(dev, shmem, buf, count); 791 } 792 793 /* Cabletron block I/O */ 794 static void slow_sane_get_8390_hdr(struct net_device *dev, 795 struct e8390_pkt_hdr *hdr, 796 int ring_page) 797 { 798 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 799 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 800 /* Register endianism - fix here rather than 8390.c */ 801 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 802 } 803 804 static void slow_sane_block_input(struct net_device *dev, int count, 805 struct sk_buff *skb, int ring_offset) 806 { 807 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 808 unsigned long xfer_start = xfer_base+dev->mem_start; 809 810 if (xfer_start + count > ei_status.rmem_end) { 811 /* We must wrap the input move. */ 812 int semi_count = ei_status.rmem_end - xfer_start; 813 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 814 semi_count); 815 count -= semi_count; 816 word_memcpy_fromcard(skb->data + semi_count, 817 ei_status.rmem_start, count); 818 } else { 819 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 820 count); 821 } 822 } 823 824 static void slow_sane_block_output(struct net_device *dev, int count, 825 const unsigned char *buf, int start_page) 826 { 827 long shmem = (start_page - WD_START_PG)<<8; 828 829 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 830 } 831 832 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 833 { 834 volatile unsigned short *to = (void *)tp; 835 const unsigned short *from = fp; 836 837 count++; 838 count /= 2; 839 840 while (count--) 841 *to++ = *from++; 842 } 843 844 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 845 { 846 unsigned short *to = tp; 847 const volatile unsigned short *from = (const void *)fp; 848 849 count++; 850 count /= 2; 851 852 while (count--) 853 *to++ = *from++; 854 } 855 856 857