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 u8 addr[ETH_ALEN]; 296 297 dev->irq = SLOT2IRQ(board->slot); 298 /* This is getting to be a habit */ 299 dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20); 300 301 /* 302 * Get some Nubus info - we will trust the card's idea 303 * of where its memory and registers are. 304 */ 305 306 if (nubus_get_func_dir(fres, &dir) == -1) { 307 dev_err(&board->dev, 308 "Unable to get Nubus functional directory\n"); 309 return false; 310 } 311 312 /* Get the MAC address */ 313 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 314 dev_info(&board->dev, "MAC address resource not found\n"); 315 return false; 316 } 317 318 nubus_get_rsrc_mem(addr, &ent, 6); 319 eth_hw_addr_set(dev, addr); 320 321 if (useresources[cardtype] == 1) { 322 nubus_rewinddir(&dir); 323 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, 324 &ent) == -1) { 325 dev_err(&board->dev, 326 "Memory offset resource not found\n"); 327 return false; 328 } 329 nubus_get_rsrc_mem(&offset, &ent, 4); 330 dev->mem_start = dev->base_addr + offset; 331 /* yes, this is how the Apple driver does it */ 332 dev->base_addr = dev->mem_start + 0x10000; 333 nubus_rewinddir(&dir); 334 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, 335 &ent) == -1) { 336 dev_info(&board->dev, 337 "Memory length resource not found, probing\n"); 338 offset = mac8390_memsize(dev->mem_start); 339 } else { 340 nubus_get_rsrc_mem(&offset, &ent, 4); 341 } 342 dev->mem_end = dev->mem_start + offset; 343 } else { 344 switch (cardtype) { 345 case MAC8390_KINETICS: 346 case MAC8390_DAYNA: /* it's the same */ 347 dev->base_addr = (int)(board->slot_addr + 348 DAYNA_8390_BASE); 349 dev->mem_start = (int)(board->slot_addr + 350 DAYNA_8390_MEM); 351 dev->mem_end = dev->mem_start + 352 mac8390_memsize(dev->mem_start); 353 break; 354 case MAC8390_INTERLAN: 355 dev->base_addr = (int)(board->slot_addr + 356 INTERLAN_8390_BASE); 357 dev->mem_start = (int)(board->slot_addr + 358 INTERLAN_8390_MEM); 359 dev->mem_end = dev->mem_start + 360 mac8390_memsize(dev->mem_start); 361 break; 362 case MAC8390_CABLETRON: 363 dev->base_addr = (int)(board->slot_addr + 364 CABLETRON_8390_BASE); 365 dev->mem_start = (int)(board->slot_addr + 366 CABLETRON_8390_MEM); 367 /* The base address is unreadable if 0x00 368 * has been written to the command register 369 * Reset the chip by writing E8390_NODMA + 370 * E8390_PAGE0 + E8390_STOP just to be 371 * sure 372 */ 373 i = (void *)dev->base_addr; 374 *i = 0x21; 375 dev->mem_end = dev->mem_start + 376 mac8390_memsize(dev->mem_start); 377 break; 378 379 default: 380 dev_err(&board->dev, 381 "No known base address for card type\n"); 382 return false; 383 } 384 } 385 386 return true; 387 } 388 389 static int mac8390_device_probe(struct nubus_board *board) 390 { 391 struct net_device *dev; 392 int err = -ENODEV; 393 struct nubus_rsrc *fres; 394 enum mac8390_type cardtype = MAC8390_NONE; 395 396 dev = ____alloc_ei_netdev(0); 397 if (!dev) 398 return -ENOMEM; 399 400 SET_NETDEV_DEV(dev, &board->dev); 401 402 for_each_board_func_rsrc(board, fres) { 403 if (fres->category != NUBUS_CAT_NETWORK || 404 fres->type != NUBUS_TYPE_ETHERNET) 405 continue; 406 407 cardtype = mac8390_ident(fres); 408 if (cardtype == MAC8390_NONE) 409 continue; 410 411 if (mac8390_rsrc_init(dev, fres, cardtype)) 412 break; 413 } 414 if (!fres) 415 goto out; 416 417 err = mac8390_initdev(dev, board, cardtype); 418 if (err) 419 goto out; 420 421 err = register_netdev(dev); 422 if (err) 423 goto out; 424 425 nubus_set_drvdata(board, dev); 426 return 0; 427 428 out: 429 free_netdev(dev); 430 return err; 431 } 432 433 static void mac8390_device_remove(struct nubus_board *board) 434 { 435 struct net_device *dev = nubus_get_drvdata(board); 436 437 unregister_netdev(dev); 438 free_netdev(dev); 439 } 440 441 static struct nubus_driver mac8390_driver = { 442 .probe = mac8390_device_probe, 443 .remove = mac8390_device_remove, 444 .driver = { 445 .name = KBUILD_MODNAME, 446 .owner = THIS_MODULE, 447 } 448 }; 449 450 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 451 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 452 MODULE_LICENSE("GPL"); 453 454 static int __init mac8390_init(void) 455 { 456 return nubus_driver_register(&mac8390_driver); 457 } 458 module_init(mac8390_init); 459 460 static void __exit mac8390_exit(void) 461 { 462 nubus_driver_unregister(&mac8390_driver); 463 } 464 module_exit(mac8390_exit); 465 466 static const struct net_device_ops mac8390_netdev_ops = { 467 .ndo_open = mac8390_open, 468 .ndo_stop = mac8390_close, 469 .ndo_start_xmit = __ei_start_xmit, 470 .ndo_tx_timeout = __ei_tx_timeout, 471 .ndo_get_stats = __ei_get_stats, 472 .ndo_set_rx_mode = __ei_set_multicast_list, 473 .ndo_validate_addr = eth_validate_addr, 474 .ndo_set_mac_address = eth_mac_addr, 475 #ifdef CONFIG_NET_POLL_CONTROLLER 476 .ndo_poll_controller = __ei_poll, 477 #endif 478 }; 479 480 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, 481 enum mac8390_type type) 482 { 483 static u32 fwrd4_offsets[16] = { 484 0, 4, 8, 12, 485 16, 20, 24, 28, 486 32, 36, 40, 44, 487 48, 52, 56, 60 488 }; 489 static u32 back4_offsets[16] = { 490 60, 56, 52, 48, 491 44, 40, 36, 32, 492 28, 24, 20, 16, 493 12, 8, 4, 0 494 }; 495 static u32 fwrd2_offsets[16] = { 496 0, 2, 4, 6, 497 8, 10, 12, 14, 498 16, 18, 20, 22, 499 24, 26, 28, 30 500 }; 501 502 int access_bitmode = 0; 503 504 /* Now fill in our stuff */ 505 dev->netdev_ops = &mac8390_netdev_ops; 506 507 /* GAR, ei_status is actually a macro even though it looks global */ 508 ei_status.name = cardname[type]; 509 ei_status.word16 = word16[type]; 510 511 /* Cabletron's TX/RX buffers are backwards */ 512 if (type == MAC8390_CABLETRON) { 513 ei_status.tx_start_page = CABLETRON_TX_START_PG; 514 ei_status.rx_start_page = CABLETRON_RX_START_PG; 515 ei_status.stop_page = CABLETRON_RX_STOP_PG; 516 ei_status.rmem_start = dev->mem_start; 517 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 518 } else { 519 ei_status.tx_start_page = WD_START_PG; 520 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 521 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 522 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 523 ei_status.rmem_end = dev->mem_end; 524 } 525 526 /* Fill in model-specific information and functions */ 527 switch (type) { 528 case MAC8390_FARALLON: 529 case MAC8390_APPLE: 530 switch (mac8390_testio(dev->mem_start)) { 531 case ACCESS_UNKNOWN: 532 dev_err(&board->dev, 533 "Don't know how to access card memory\n"); 534 return -ENODEV; 535 536 case ACCESS_16: 537 /* 16 bit card, register map is reversed */ 538 ei_status.reset_8390 = mac8390_no_reset; 539 ei_status.block_input = slow_sane_block_input; 540 ei_status.block_output = slow_sane_block_output; 541 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 542 ei_status.reg_offset = back4_offsets; 543 break; 544 545 case ACCESS_32: 546 /* 32 bit card, register map is reversed */ 547 ei_status.reset_8390 = mac8390_no_reset; 548 ei_status.block_input = sane_block_input; 549 ei_status.block_output = sane_block_output; 550 ei_status.get_8390_hdr = sane_get_8390_hdr; 551 ei_status.reg_offset = back4_offsets; 552 access_bitmode = 1; 553 break; 554 } 555 break; 556 557 case MAC8390_ASANTE: 558 /* Some Asante cards pass the 32 bit test 559 * but overwrite system memory when run at 32 bit. 560 * so we run them all at 16 bit. 561 */ 562 ei_status.reset_8390 = mac8390_no_reset; 563 ei_status.block_input = slow_sane_block_input; 564 ei_status.block_output = slow_sane_block_output; 565 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 566 ei_status.reg_offset = back4_offsets; 567 break; 568 569 case MAC8390_CABLETRON: 570 /* 16 bit card, register map is short forward */ 571 ei_status.reset_8390 = mac8390_no_reset; 572 ei_status.block_input = slow_sane_block_input; 573 ei_status.block_output = slow_sane_block_output; 574 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 575 ei_status.reg_offset = fwrd2_offsets; 576 break; 577 578 case MAC8390_DAYNA: 579 case MAC8390_KINETICS: 580 /* 16 bit memory, register map is forward */ 581 /* dayna and similar */ 582 ei_status.reset_8390 = mac8390_no_reset; 583 ei_status.block_input = dayna_block_input; 584 ei_status.block_output = dayna_block_output; 585 ei_status.get_8390_hdr = dayna_get_8390_hdr; 586 ei_status.reg_offset = fwrd4_offsets; 587 break; 588 589 case MAC8390_INTERLAN: 590 /* 16 bit memory, register map is forward */ 591 ei_status.reset_8390 = interlan_reset; 592 ei_status.block_input = slow_sane_block_input; 593 ei_status.block_output = slow_sane_block_output; 594 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 595 ei_status.reg_offset = fwrd4_offsets; 596 break; 597 598 default: 599 dev_err(&board->dev, "Unsupported card type\n"); 600 return -ENODEV; 601 } 602 603 __NS8390_init(dev, 0); 604 605 /* Good, done, now spit out some messages */ 606 dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]); 607 dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 608 dev->dev_addr, dev->irq, 609 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 610 dev->mem_start, access_bitmode ? 32 : 16); 611 return 0; 612 } 613 614 static int mac8390_open(struct net_device *dev) 615 { 616 int err; 617 618 __ei_open(dev); 619 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 620 if (err) 621 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 622 return err; 623 } 624 625 static int mac8390_close(struct net_device *dev) 626 { 627 free_irq(dev->irq, dev); 628 __ei_close(dev); 629 return 0; 630 } 631 632 static void mac8390_no_reset(struct net_device *dev) 633 { 634 struct ei_device *ei_local = netdev_priv(dev); 635 636 ei_status.txing = 0; 637 netif_info(ei_local, hw, dev, "reset not supported\n"); 638 } 639 640 static void interlan_reset(struct net_device *dev) 641 { 642 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 643 struct ei_device *ei_local = netdev_priv(dev); 644 645 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 646 jiffies); 647 ei_status.txing = 0; 648 target[0xC0000] = 0; 649 if (netif_msg_hw(ei_local)) 650 pr_cont("reset complete\n"); 651 } 652 653 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 654 /* directly from daynaport.c by Alan Cox */ 655 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 656 int count) 657 { 658 volatile unsigned char *ptr; 659 unsigned char *target = to; 660 from <<= 1; /* word, skip overhead */ 661 ptr = (unsigned char *)(dev->mem_start+from); 662 /* Leading byte? */ 663 if (from & 2) { 664 *target++ = ptr[-1]; 665 ptr += 2; 666 count--; 667 } 668 while (count >= 2) { 669 *(unsigned short *)target = *(unsigned short volatile *)ptr; 670 ptr += 4; /* skip cruft */ 671 target += 2; 672 count -= 2; 673 } 674 /* Trailing byte? */ 675 if (count) 676 *target = *ptr; 677 } 678 679 static void dayna_memcpy_tocard(struct net_device *dev, int to, 680 const void *from, int count) 681 { 682 volatile unsigned short *ptr; 683 const unsigned char *src = from; 684 to <<= 1; /* word, skip overhead */ 685 ptr = (unsigned short *)(dev->mem_start+to); 686 /* Leading byte? */ 687 if (to & 2) { /* avoid a byte write (stomps on other data) */ 688 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 689 ptr++; 690 count--; 691 } 692 while (count >= 2) { 693 *ptr++ = *(unsigned short *)src; /* Copy and */ 694 ptr++; /* skip cruft */ 695 src += 2; 696 count -= 2; 697 } 698 /* Trailing byte? */ 699 if (count) { 700 /* card doesn't like byte writes */ 701 *ptr = (*ptr & 0x00FF) | (*src << 8); 702 } 703 } 704 705 /* sane block input/output */ 706 static void sane_get_8390_hdr(struct net_device *dev, 707 struct e8390_pkt_hdr *hdr, int ring_page) 708 { 709 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 710 memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4); 711 /* Fix endianness */ 712 hdr->count = swab16(hdr->count); 713 } 714 715 static void sane_block_input(struct net_device *dev, int count, 716 struct sk_buff *skb, int ring_offset) 717 { 718 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 719 unsigned long xfer_start = xfer_base + dev->mem_start; 720 721 if (xfer_start + count > ei_status.rmem_end) { 722 /* We must wrap the input move. */ 723 int semi_count = ei_status.rmem_end - xfer_start; 724 memcpy_fromio(skb->data, 725 (void __iomem *)dev->mem_start + xfer_base, 726 semi_count); 727 count -= semi_count; 728 memcpy_fromio(skb->data + semi_count, 729 (void __iomem *)ei_status.rmem_start, count); 730 } else { 731 memcpy_fromio(skb->data, 732 (void __iomem *)dev->mem_start + xfer_base, 733 count); 734 } 735 } 736 737 static void sane_block_output(struct net_device *dev, int count, 738 const unsigned char *buf, int start_page) 739 { 740 long shmem = (start_page - WD_START_PG)<<8; 741 742 memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count); 743 } 744 745 /* dayna block input/output */ 746 static void dayna_get_8390_hdr(struct net_device *dev, 747 struct e8390_pkt_hdr *hdr, int ring_page) 748 { 749 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 750 751 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 752 /* Fix endianness */ 753 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 754 } 755 756 static void dayna_block_input(struct net_device *dev, int count, 757 struct sk_buff *skb, int ring_offset) 758 { 759 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 760 unsigned long xfer_start = xfer_base+dev->mem_start; 761 762 /* Note the offset math is done in card memory space which is word 763 per long onto our space. */ 764 765 if (xfer_start + count > ei_status.rmem_end) { 766 /* We must wrap the input move. */ 767 int semi_count = ei_status.rmem_end - xfer_start; 768 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 769 count -= semi_count; 770 dayna_memcpy_fromcard(dev, skb->data + semi_count, 771 ei_status.rmem_start - dev->mem_start, 772 count); 773 } else { 774 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 775 } 776 } 777 778 static void dayna_block_output(struct net_device *dev, int count, 779 const unsigned char *buf, 780 int start_page) 781 { 782 long shmem = (start_page - WD_START_PG)<<8; 783 784 dayna_memcpy_tocard(dev, shmem, buf, count); 785 } 786 787 /* Cabletron block I/O */ 788 static void slow_sane_get_8390_hdr(struct net_device *dev, 789 struct e8390_pkt_hdr *hdr, 790 int ring_page) 791 { 792 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 793 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 794 /* Register endianism - fix here rather than 8390.c */ 795 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 796 } 797 798 static void slow_sane_block_input(struct net_device *dev, int count, 799 struct sk_buff *skb, int ring_offset) 800 { 801 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 802 unsigned long xfer_start = xfer_base+dev->mem_start; 803 804 if (xfer_start + count > ei_status.rmem_end) { 805 /* We must wrap the input move. */ 806 int semi_count = ei_status.rmem_end - xfer_start; 807 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 808 semi_count); 809 count -= semi_count; 810 word_memcpy_fromcard(skb->data + semi_count, 811 ei_status.rmem_start, count); 812 } else { 813 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 814 count); 815 } 816 } 817 818 static void slow_sane_block_output(struct net_device *dev, int count, 819 const unsigned char *buf, int start_page) 820 { 821 long shmem = (start_page - WD_START_PG)<<8; 822 823 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 824 } 825 826 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 827 { 828 volatile unsigned short *to = (void *)tp; 829 const unsigned short *from = fp; 830 831 count++; 832 count /= 2; 833 834 while (count--) 835 *to++ = *from++; 836 } 837 838 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 839 { 840 unsigned short *to = tp; 841 const volatile unsigned short *from = (const void *)fp; 842 843 count++; 844 count /= 2; 845 846 while (count--) 847 *to++ = *from++; 848 } 849 850 851