1 // SPDX-License-Identifier: GPL-1.0+ 2 /* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike) 3 Ethernet cards on Linux */ 4 /* Based on the former daynaport.c driver, by Alan Cox. Some code 5 taken from or inspired by skeleton.c by Donald Becker, acenic.c by 6 Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker. */ 7 8 /* 2000-02-28: support added for Dayna and Kinetics cards by 9 A.G.deWijn@phys.uu.nl */ 10 /* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */ 11 /* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */ 12 /* 2001-05-15: support for Cabletron ported from old daynaport driver 13 * and fixed access to Sonic Sys card which masquerades as a Farallon 14 * by rayk@knightsmanor.org */ 15 /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */ 16 /* 2003-12-26: Make sure Asante cards always work. */ 17 18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 19 20 #include <linux/module.h> 21 #include <linux/kernel.h> 22 #include <linux/types.h> 23 #include <linux/fcntl.h> 24 #include <linux/interrupt.h> 25 #include <linux/ptrace.h> 26 #include <linux/ioport.h> 27 #include <linux/nubus.h> 28 #include <linux/in.h> 29 #include <linux/string.h> 30 #include <linux/errno.h> 31 #include <linux/init.h> 32 #include <linux/netdevice.h> 33 #include <linux/etherdevice.h> 34 #include <linux/skbuff.h> 35 #include <linux/bitops.h> 36 #include <linux/io.h> 37 38 #include <asm/dma.h> 39 #include <asm/hwtest.h> 40 #include <asm/macints.h> 41 42 static char version[] = 43 "v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n"; 44 45 #define EI_SHIFT(x) (ei_local->reg_offset[x]) 46 #define ei_inb(port) in_8(port) 47 #define ei_outb(val, port) out_8(port, val) 48 #define ei_inb_p(port) in_8(port) 49 #define ei_outb_p(val, port) out_8(port, val) 50 51 #include "lib8390.c" 52 53 #define WD_START_PG 0x00 /* First page of TX buffer */ 54 #define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */ 55 #define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */ 56 #define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG 57 /* First page of TX buffer */ 58 59 /* 60 * Unfortunately it seems we have to hardcode these for the moment 61 * Shouldn't the card know about this? 62 * Does anyone know where to read it off the card? 63 * Do we trust the data provided by the card? 64 */ 65 66 #define DAYNA_8390_BASE 0x80000 67 #define DAYNA_8390_MEM 0x00000 68 69 #define CABLETRON_8390_BASE 0x90000 70 #define CABLETRON_8390_MEM 0x00000 71 72 #define INTERLAN_8390_BASE 0xE0000 73 #define INTERLAN_8390_MEM 0xD0000 74 75 enum mac8390_type { 76 MAC8390_NONE = -1, 77 MAC8390_APPLE, 78 MAC8390_ASANTE, 79 MAC8390_FARALLON, 80 MAC8390_CABLETRON, 81 MAC8390_DAYNA, 82 MAC8390_INTERLAN, 83 MAC8390_KINETICS, 84 }; 85 86 static const char *cardname[] = { 87 "apple", 88 "asante", 89 "farallon", 90 "cabletron", 91 "dayna", 92 "interlan", 93 "kinetics", 94 }; 95 96 static const int word16[] = { 97 1, /* apple */ 98 1, /* asante */ 99 1, /* farallon */ 100 1, /* cabletron */ 101 0, /* dayna */ 102 1, /* interlan */ 103 0, /* kinetics */ 104 }; 105 106 /* on which cards do we use NuBus resources? */ 107 static const int useresources[] = { 108 1, /* apple */ 109 1, /* asante */ 110 1, /* farallon */ 111 0, /* cabletron */ 112 0, /* dayna */ 113 0, /* interlan */ 114 0, /* kinetics */ 115 }; 116 117 enum mac8390_access { 118 ACCESS_UNKNOWN = 0, 119 ACCESS_32, 120 ACCESS_16, 121 }; 122 123 extern int mac8390_memtest(struct net_device *dev); 124 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, 125 enum mac8390_type type); 126 127 static int mac8390_open(struct net_device *dev); 128 static int mac8390_close(struct net_device *dev); 129 static void mac8390_no_reset(struct net_device *dev); 130 static void interlan_reset(struct net_device *dev); 131 132 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ 133 static void sane_get_8390_hdr(struct net_device *dev, 134 struct e8390_pkt_hdr *hdr, int ring_page); 135 static void sane_block_input(struct net_device *dev, int count, 136 struct sk_buff *skb, int ring_offset); 137 static void sane_block_output(struct net_device *dev, int count, 138 const unsigned char *buf, const int start_page); 139 140 /* dayna_memcpy to and from card */ 141 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, 142 int from, int count); 143 static void dayna_memcpy_tocard(struct net_device *dev, int to, 144 const void *from, int count); 145 146 /* Dayna - Dayna/Kinetics use this */ 147 static void dayna_get_8390_hdr(struct net_device *dev, 148 struct e8390_pkt_hdr *hdr, int ring_page); 149 static void dayna_block_input(struct net_device *dev, int count, 150 struct sk_buff *skb, int ring_offset); 151 static void dayna_block_output(struct net_device *dev, int count, 152 const unsigned char *buf, int start_page); 153 154 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ 155 static void slow_sane_get_8390_hdr(struct net_device *dev, 156 struct e8390_pkt_hdr *hdr, int ring_page); 157 static void slow_sane_block_input(struct net_device *dev, int count, 158 struct sk_buff *skb, int ring_offset); 159 static void slow_sane_block_output(struct net_device *dev, int count, 160 const unsigned char *buf, int start_page); 161 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); 162 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); 163 164 static enum mac8390_type mac8390_ident(struct nubus_rsrc *fres) 165 { 166 switch (fres->dr_sw) { 167 case NUBUS_DRSW_3COM: 168 switch (fres->dr_hw) { 169 case NUBUS_DRHW_APPLE_SONIC_NB: 170 case NUBUS_DRHW_APPLE_SONIC_LC: 171 case NUBUS_DRHW_SONNET: 172 return MAC8390_NONE; 173 default: 174 return MAC8390_APPLE; 175 } 176 177 case NUBUS_DRSW_APPLE: 178 switch (fres->dr_hw) { 179 case NUBUS_DRHW_ASANTE_LC: 180 return MAC8390_NONE; 181 case NUBUS_DRHW_CABLETRON: 182 return MAC8390_CABLETRON; 183 default: 184 return MAC8390_APPLE; 185 } 186 187 case NUBUS_DRSW_ASANTE: 188 return MAC8390_ASANTE; 189 190 case NUBUS_DRSW_TECHWORKS: 191 case NUBUS_DRSW_DAYNA2: 192 case NUBUS_DRSW_DAYNA_LC: 193 if (fres->dr_hw == NUBUS_DRHW_CABLETRON) 194 return MAC8390_CABLETRON; 195 else 196 return MAC8390_APPLE; 197 198 case NUBUS_DRSW_FARALLON: 199 return MAC8390_FARALLON; 200 201 case NUBUS_DRSW_KINETICS: 202 switch (fres->dr_hw) { 203 case NUBUS_DRHW_INTERLAN: 204 return MAC8390_INTERLAN; 205 default: 206 return MAC8390_KINETICS; 207 } 208 209 case NUBUS_DRSW_DAYNA: 210 /* 211 * These correspond to Dayna Sonic cards 212 * which use the macsonic driver 213 */ 214 if (fres->dr_hw == NUBUS_DRHW_SMC9194 || 215 fres->dr_hw == NUBUS_DRHW_INTERLAN) 216 return MAC8390_NONE; 217 else 218 return MAC8390_DAYNA; 219 } 220 return MAC8390_NONE; 221 } 222 223 static enum mac8390_access mac8390_testio(unsigned long membase) 224 { 225 u32 outdata = 0xA5A0B5B0; 226 u32 indata = 0; 227 228 /* Try writing 32 bits */ 229 nubus_writel(outdata, membase); 230 /* Now read it back */ 231 indata = nubus_readl(membase); 232 if (outdata == indata) 233 return ACCESS_32; 234 235 outdata = 0xC5C0D5D0; 236 indata = 0; 237 238 /* Write 16 bit output */ 239 word_memcpy_tocard(membase, &outdata, 4); 240 /* Now read it back */ 241 word_memcpy_fromcard(&indata, membase, 4); 242 if (outdata == indata) 243 return ACCESS_16; 244 245 return ACCESS_UNKNOWN; 246 } 247 248 static int mac8390_memsize(unsigned long membase) 249 { 250 unsigned long flags; 251 int i, j; 252 253 local_irq_save(flags); 254 /* Check up to 32K in 4K increments */ 255 for (i = 0; i < 8; i++) { 256 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); 257 258 /* Unwriteable - we have a fully decoded card and the 259 RAM end located */ 260 if (hwreg_present(m) == 0) 261 break; 262 263 /* write a distinctive byte */ 264 *m = 0xA5A0 | i; 265 /* check that we read back what we wrote */ 266 if (*m != (0xA5A0 | i)) 267 break; 268 269 /* check for partial decode and wrap */ 270 for (j = 0; j < i; j++) { 271 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); 272 if (*p != (0xA5A0 | j)) 273 break; 274 } 275 } 276 local_irq_restore(flags); 277 /* 278 * in any case, we stopped once we tried one block too many, 279 * or once we reached 32K 280 */ 281 return i * 0x1000; 282 } 283 284 static bool mac8390_rsrc_init(struct net_device *dev, 285 struct nubus_rsrc *fres, 286 enum mac8390_type cardtype) 287 { 288 struct nubus_board *board = fres->board; 289 struct nubus_dir dir; 290 struct nubus_dirent ent; 291 int offset; 292 volatile unsigned short *i; 293 u8 addr[ETH_ALEN]; 294 295 dev->irq = SLOT2IRQ(board->slot); 296 /* This is getting to be a habit */ 297 dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20); 298 299 /* 300 * Get some Nubus info - we will trust the card's idea 301 * of where its memory and registers are. 302 */ 303 304 if (nubus_get_func_dir(fres, &dir) == -1) { 305 dev_err(&board->dev, 306 "Unable to get Nubus functional directory\n"); 307 return false; 308 } 309 310 /* Get the MAC address */ 311 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 312 dev_info(&board->dev, "MAC address resource not found\n"); 313 return false; 314 } 315 316 nubus_get_rsrc_mem(addr, &ent, 6); 317 eth_hw_addr_set(dev, addr); 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 void 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 } 438 439 static struct nubus_driver mac8390_driver = { 440 .probe = mac8390_device_probe, 441 .remove = mac8390_device_remove, 442 .driver = { 443 .name = KBUILD_MODNAME, 444 .owner = THIS_MODULE, 445 } 446 }; 447 448 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 449 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 450 MODULE_LICENSE("GPL"); 451 452 static int __init mac8390_init(void) 453 { 454 return nubus_driver_register(&mac8390_driver); 455 } 456 module_init(mac8390_init); 457 458 static void __exit mac8390_exit(void) 459 { 460 nubus_driver_unregister(&mac8390_driver); 461 } 462 module_exit(mac8390_exit); 463 464 static const struct net_device_ops mac8390_netdev_ops = { 465 .ndo_open = mac8390_open, 466 .ndo_stop = mac8390_close, 467 .ndo_start_xmit = __ei_start_xmit, 468 .ndo_tx_timeout = __ei_tx_timeout, 469 .ndo_get_stats = __ei_get_stats, 470 .ndo_set_rx_mode = __ei_set_multicast_list, 471 .ndo_validate_addr = eth_validate_addr, 472 .ndo_set_mac_address = eth_mac_addr, 473 #ifdef CONFIG_NET_POLL_CONTROLLER 474 .ndo_poll_controller = __ei_poll, 475 #endif 476 }; 477 478 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, 479 enum mac8390_type type) 480 { 481 static u32 fwrd4_offsets[16] = { 482 0, 4, 8, 12, 483 16, 20, 24, 28, 484 32, 36, 40, 44, 485 48, 52, 56, 60 486 }; 487 static u32 back4_offsets[16] = { 488 60, 56, 52, 48, 489 44, 40, 36, 32, 490 28, 24, 20, 16, 491 12, 8, 4, 0 492 }; 493 static u32 fwrd2_offsets[16] = { 494 0, 2, 4, 6, 495 8, 10, 12, 14, 496 16, 18, 20, 22, 497 24, 26, 28, 30 498 }; 499 500 int access_bitmode = 0; 501 502 /* Now fill in our stuff */ 503 dev->netdev_ops = &mac8390_netdev_ops; 504 505 /* GAR, ei_status is actually a macro even though it looks global */ 506 ei_status.name = cardname[type]; 507 ei_status.word16 = word16[type]; 508 509 /* Cabletron's TX/RX buffers are backwards */ 510 if (type == MAC8390_CABLETRON) { 511 ei_status.tx_start_page = CABLETRON_TX_START_PG; 512 ei_status.rx_start_page = CABLETRON_RX_START_PG; 513 ei_status.stop_page = CABLETRON_RX_STOP_PG; 514 ei_status.rmem_start = dev->mem_start; 515 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 516 } else { 517 ei_status.tx_start_page = WD_START_PG; 518 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 519 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 520 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 521 ei_status.rmem_end = dev->mem_end; 522 } 523 524 /* Fill in model-specific information and functions */ 525 switch (type) { 526 case MAC8390_FARALLON: 527 case MAC8390_APPLE: 528 switch (mac8390_testio(dev->mem_start)) { 529 case ACCESS_UNKNOWN: 530 dev_err(&board->dev, 531 "Don't know how to access card memory\n"); 532 return -ENODEV; 533 534 case ACCESS_16: 535 /* 16 bit card, register map is reversed */ 536 ei_status.reset_8390 = mac8390_no_reset; 537 ei_status.block_input = slow_sane_block_input; 538 ei_status.block_output = slow_sane_block_output; 539 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 540 ei_status.reg_offset = back4_offsets; 541 break; 542 543 case ACCESS_32: 544 /* 32 bit card, register map is reversed */ 545 ei_status.reset_8390 = mac8390_no_reset; 546 ei_status.block_input = sane_block_input; 547 ei_status.block_output = sane_block_output; 548 ei_status.get_8390_hdr = sane_get_8390_hdr; 549 ei_status.reg_offset = back4_offsets; 550 access_bitmode = 1; 551 break; 552 } 553 break; 554 555 case MAC8390_ASANTE: 556 /* Some Asante cards pass the 32 bit test 557 * but overwrite system memory when run at 32 bit. 558 * so we run them all at 16 bit. 559 */ 560 ei_status.reset_8390 = mac8390_no_reset; 561 ei_status.block_input = slow_sane_block_input; 562 ei_status.block_output = slow_sane_block_output; 563 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 564 ei_status.reg_offset = back4_offsets; 565 break; 566 567 case MAC8390_CABLETRON: 568 /* 16 bit card, register map is short forward */ 569 ei_status.reset_8390 = mac8390_no_reset; 570 ei_status.block_input = slow_sane_block_input; 571 ei_status.block_output = slow_sane_block_output; 572 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 573 ei_status.reg_offset = fwrd2_offsets; 574 break; 575 576 case MAC8390_DAYNA: 577 case MAC8390_KINETICS: 578 /* 16 bit memory, register map is forward */ 579 /* dayna and similar */ 580 ei_status.reset_8390 = mac8390_no_reset; 581 ei_status.block_input = dayna_block_input; 582 ei_status.block_output = dayna_block_output; 583 ei_status.get_8390_hdr = dayna_get_8390_hdr; 584 ei_status.reg_offset = fwrd4_offsets; 585 break; 586 587 case MAC8390_INTERLAN: 588 /* 16 bit memory, register map is forward */ 589 ei_status.reset_8390 = interlan_reset; 590 ei_status.block_input = slow_sane_block_input; 591 ei_status.block_output = slow_sane_block_output; 592 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 593 ei_status.reg_offset = fwrd4_offsets; 594 break; 595 596 default: 597 dev_err(&board->dev, "Unsupported card type\n"); 598 return -ENODEV; 599 } 600 601 __NS8390_init(dev, 0); 602 603 /* Good, done, now spit out some messages */ 604 dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]); 605 dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 606 dev->dev_addr, dev->irq, 607 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 608 dev->mem_start, access_bitmode ? 32 : 16); 609 return 0; 610 } 611 612 static int mac8390_open(struct net_device *dev) 613 { 614 int err; 615 616 __ei_open(dev); 617 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 618 if (err) 619 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 620 return err; 621 } 622 623 static int mac8390_close(struct net_device *dev) 624 { 625 free_irq(dev->irq, dev); 626 __ei_close(dev); 627 return 0; 628 } 629 630 static void mac8390_no_reset(struct net_device *dev) 631 { 632 struct ei_device *ei_local = netdev_priv(dev); 633 634 ei_status.txing = 0; 635 netif_info(ei_local, hw, dev, "reset not supported\n"); 636 } 637 638 static void interlan_reset(struct net_device *dev) 639 { 640 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 641 struct ei_device *ei_local = netdev_priv(dev); 642 643 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 644 jiffies); 645 ei_status.txing = 0; 646 target[0xC0000] = 0; 647 if (netif_msg_hw(ei_local)) 648 pr_cont("reset complete\n"); 649 } 650 651 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 652 /* directly from daynaport.c by Alan Cox */ 653 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 654 int count) 655 { 656 volatile unsigned char *ptr; 657 unsigned char *target = to; 658 from <<= 1; /* word, skip overhead */ 659 ptr = (unsigned char *)(dev->mem_start+from); 660 /* Leading byte? */ 661 if (from & 2) { 662 *target++ = ptr[-1]; 663 ptr += 2; 664 count--; 665 } 666 while (count >= 2) { 667 *(unsigned short *)target = *(unsigned short volatile *)ptr; 668 ptr += 4; /* skip cruft */ 669 target += 2; 670 count -= 2; 671 } 672 /* Trailing byte? */ 673 if (count) 674 *target = *ptr; 675 } 676 677 static void dayna_memcpy_tocard(struct net_device *dev, int to, 678 const void *from, int count) 679 { 680 volatile unsigned short *ptr; 681 const unsigned char *src = from; 682 to <<= 1; /* word, skip overhead */ 683 ptr = (unsigned short *)(dev->mem_start+to); 684 /* Leading byte? */ 685 if (to & 2) { /* avoid a byte write (stomps on other data) */ 686 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 687 ptr++; 688 count--; 689 } 690 while (count >= 2) { 691 *ptr++ = *(unsigned short *)src; /* Copy and */ 692 ptr++; /* skip cruft */ 693 src += 2; 694 count -= 2; 695 } 696 /* Trailing byte? */ 697 if (count) { 698 /* card doesn't like byte writes */ 699 *ptr = (*ptr & 0x00FF) | (*src << 8); 700 } 701 } 702 703 /* sane block input/output */ 704 static void sane_get_8390_hdr(struct net_device *dev, 705 struct e8390_pkt_hdr *hdr, int ring_page) 706 { 707 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 708 memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4); 709 /* Fix endianness */ 710 hdr->count = swab16(hdr->count); 711 } 712 713 static void sane_block_input(struct net_device *dev, int count, 714 struct sk_buff *skb, int ring_offset) 715 { 716 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 717 unsigned long xfer_start = xfer_base + dev->mem_start; 718 719 if (xfer_start + count > ei_status.rmem_end) { 720 /* We must wrap the input move. */ 721 int semi_count = ei_status.rmem_end - xfer_start; 722 memcpy_fromio(skb->data, 723 (void __iomem *)dev->mem_start + xfer_base, 724 semi_count); 725 count -= semi_count; 726 memcpy_fromio(skb->data + semi_count, 727 (void __iomem *)ei_status.rmem_start, count); 728 } else { 729 memcpy_fromio(skb->data, 730 (void __iomem *)dev->mem_start + xfer_base, 731 count); 732 } 733 } 734 735 static void sane_block_output(struct net_device *dev, int count, 736 const unsigned char *buf, int start_page) 737 { 738 long shmem = (start_page - WD_START_PG)<<8; 739 740 memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count); 741 } 742 743 /* dayna block input/output */ 744 static void dayna_get_8390_hdr(struct net_device *dev, 745 struct e8390_pkt_hdr *hdr, int ring_page) 746 { 747 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 748 749 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 750 /* Fix endianness */ 751 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 752 } 753 754 static void dayna_block_input(struct net_device *dev, int count, 755 struct sk_buff *skb, int ring_offset) 756 { 757 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 758 unsigned long xfer_start = xfer_base+dev->mem_start; 759 760 /* Note the offset math is done in card memory space which is word 761 per long onto our space. */ 762 763 if (xfer_start + count > ei_status.rmem_end) { 764 /* We must wrap the input move. */ 765 int semi_count = ei_status.rmem_end - xfer_start; 766 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 767 count -= semi_count; 768 dayna_memcpy_fromcard(dev, skb->data + semi_count, 769 ei_status.rmem_start - dev->mem_start, 770 count); 771 } else { 772 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 773 } 774 } 775 776 static void dayna_block_output(struct net_device *dev, int count, 777 const unsigned char *buf, 778 int start_page) 779 { 780 long shmem = (start_page - WD_START_PG)<<8; 781 782 dayna_memcpy_tocard(dev, shmem, buf, count); 783 } 784 785 /* Cabletron block I/O */ 786 static void slow_sane_get_8390_hdr(struct net_device *dev, 787 struct e8390_pkt_hdr *hdr, 788 int ring_page) 789 { 790 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 791 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 792 /* Register endianism - fix here rather than 8390.c */ 793 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 794 } 795 796 static void slow_sane_block_input(struct net_device *dev, int count, 797 struct sk_buff *skb, int ring_offset) 798 { 799 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 800 unsigned long xfer_start = xfer_base+dev->mem_start; 801 802 if (xfer_start + count > ei_status.rmem_end) { 803 /* We must wrap the input move. */ 804 int semi_count = ei_status.rmem_end - xfer_start; 805 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 806 semi_count); 807 count -= semi_count; 808 word_memcpy_fromcard(skb->data + semi_count, 809 ei_status.rmem_start, count); 810 } else { 811 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 812 count); 813 } 814 } 815 816 static void slow_sane_block_output(struct net_device *dev, int count, 817 const unsigned char *buf, int start_page) 818 { 819 long shmem = (start_page - WD_START_PG)<<8; 820 821 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 822 } 823 824 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 825 { 826 volatile unsigned short *to = (void *)tp; 827 const unsigned short *from = fp; 828 829 count++; 830 count /= 2; 831 832 while (count--) 833 *to++ = *from++; 834 } 835 836 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 837 { 838 unsigned short *to = tp; 839 const volatile unsigned short *from = (const void *)fp; 840 841 count++; 842 count /= 2; 843 844 while (count--) 845 *to++ = *from++; 846 } 847 848 849