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