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_dev *ndev, 127 enum mac8390_type type); 128 129 static int mac8390_open(struct net_device *dev); 130 static int mac8390_close(struct net_device *dev); 131 static void mac8390_no_reset(struct net_device *dev); 132 static void interlan_reset(struct net_device *dev); 133 134 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ 135 static void sane_get_8390_hdr(struct net_device *dev, 136 struct e8390_pkt_hdr *hdr, int ring_page); 137 static void sane_block_input(struct net_device *dev, int count, 138 struct sk_buff *skb, int ring_offset); 139 static void sane_block_output(struct net_device *dev, int count, 140 const unsigned char *buf, const int start_page); 141 142 /* dayna_memcpy to and from card */ 143 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, 144 int from, int count); 145 static void dayna_memcpy_tocard(struct net_device *dev, int to, 146 const void *from, int count); 147 148 /* Dayna - Dayna/Kinetics use this */ 149 static void dayna_get_8390_hdr(struct net_device *dev, 150 struct e8390_pkt_hdr *hdr, int ring_page); 151 static void dayna_block_input(struct net_device *dev, int count, 152 struct sk_buff *skb, int ring_offset); 153 static void dayna_block_output(struct net_device *dev, int count, 154 const unsigned char *buf, int start_page); 155 156 #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c)) 157 #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c)) 158 159 #define memcmp_withio(a, b, c) memcmp((a), (void *)(b), (c)) 160 161 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ 162 static void slow_sane_get_8390_hdr(struct net_device *dev, 163 struct e8390_pkt_hdr *hdr, int ring_page); 164 static void slow_sane_block_input(struct net_device *dev, int count, 165 struct sk_buff *skb, int ring_offset); 166 static void slow_sane_block_output(struct net_device *dev, int count, 167 const unsigned char *buf, int start_page); 168 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); 169 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); 170 171 static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev) 172 { 173 switch (dev->dr_sw) { 174 case NUBUS_DRSW_3COM: 175 switch (dev->dr_hw) { 176 case NUBUS_DRHW_APPLE_SONIC_NB: 177 case NUBUS_DRHW_APPLE_SONIC_LC: 178 case NUBUS_DRHW_SONNET: 179 return MAC8390_NONE; 180 break; 181 default: 182 return MAC8390_APPLE; 183 break; 184 } 185 break; 186 187 case NUBUS_DRSW_APPLE: 188 switch (dev->dr_hw) { 189 case NUBUS_DRHW_ASANTE_LC: 190 return MAC8390_NONE; 191 break; 192 case NUBUS_DRHW_CABLETRON: 193 return MAC8390_CABLETRON; 194 break; 195 default: 196 return MAC8390_APPLE; 197 break; 198 } 199 break; 200 201 case NUBUS_DRSW_ASANTE: 202 return MAC8390_ASANTE; 203 break; 204 205 case NUBUS_DRSW_TECHWORKS: 206 case NUBUS_DRSW_DAYNA2: 207 case NUBUS_DRSW_DAYNA_LC: 208 if (dev->dr_hw == NUBUS_DRHW_CABLETRON) 209 return MAC8390_CABLETRON; 210 else 211 return MAC8390_APPLE; 212 break; 213 214 case NUBUS_DRSW_FARALLON: 215 return MAC8390_FARALLON; 216 break; 217 218 case NUBUS_DRSW_KINETICS: 219 switch (dev->dr_hw) { 220 case NUBUS_DRHW_INTERLAN: 221 return MAC8390_INTERLAN; 222 break; 223 default: 224 return MAC8390_KINETICS; 225 break; 226 } 227 break; 228 229 case NUBUS_DRSW_DAYNA: 230 /* 231 * These correspond to Dayna Sonic cards 232 * which use the macsonic driver 233 */ 234 if (dev->dr_hw == NUBUS_DRHW_SMC9194 || 235 dev->dr_hw == NUBUS_DRHW_INTERLAN) 236 return MAC8390_NONE; 237 else 238 return MAC8390_DAYNA; 239 break; 240 } 241 return MAC8390_NONE; 242 } 243 244 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase) 245 { 246 unsigned long outdata = 0xA5A0B5B0; 247 unsigned long indata = 0x00000000; 248 /* Try writing 32 bits */ 249 memcpy_toio(membase, &outdata, 4); 250 /* Now compare them */ 251 if (memcmp_withio(&outdata, membase, 4) == 0) 252 return ACCESS_32; 253 /* Write 16 bit output */ 254 word_memcpy_tocard(membase, &outdata, 4); 255 /* Now read it back */ 256 word_memcpy_fromcard(&indata, membase, 4); 257 if (outdata == indata) 258 return ACCESS_16; 259 return ACCESS_UNKNOWN; 260 } 261 262 static int __init mac8390_memsize(unsigned long membase) 263 { 264 unsigned long flags; 265 int i, j; 266 267 local_irq_save(flags); 268 /* Check up to 32K in 4K increments */ 269 for (i = 0; i < 8; i++) { 270 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); 271 272 /* Unwriteable - we have a fully decoded card and the 273 RAM end located */ 274 if (hwreg_present(m) == 0) 275 break; 276 277 /* write a distinctive byte */ 278 *m = 0xA5A0 | i; 279 /* check that we read back what we wrote */ 280 if (*m != (0xA5A0 | i)) 281 break; 282 283 /* check for partial decode and wrap */ 284 for (j = 0; j < i; j++) { 285 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); 286 if (*p != (0xA5A0 | j)) 287 break; 288 } 289 } 290 local_irq_restore(flags); 291 /* 292 * in any case, we stopped once we tried one block too many, 293 * or once we reached 32K 294 */ 295 return i * 0x1000; 296 } 297 298 static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev, 299 enum mac8390_type cardtype) 300 { 301 struct nubus_dir dir; 302 struct nubus_dirent ent; 303 int offset; 304 volatile unsigned short *i; 305 306 printk_once(KERN_INFO pr_fmt("%s"), version); 307 308 dev->irq = SLOT2IRQ(ndev->board->slot); 309 /* This is getting to be a habit */ 310 dev->base_addr = (ndev->board->slot_addr | 311 ((ndev->board->slot & 0xf) << 20)); 312 313 /* 314 * Get some Nubus info - we will trust the card's idea 315 * of where its memory and registers are. 316 */ 317 318 if (nubus_get_func_dir(ndev, &dir) == -1) { 319 pr_err("%s: Unable to get Nubus functional directory for slot %X!\n", 320 dev->name, ndev->board->slot); 321 return false; 322 } 323 324 /* Get the MAC address */ 325 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 326 pr_info("%s: Couldn't get MAC address!\n", dev->name); 327 return false; 328 } 329 330 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); 331 332 if (useresources[cardtype] == 1) { 333 nubus_rewinddir(&dir); 334 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, 335 &ent) == -1) { 336 pr_err("%s: Memory offset resource for slot %X not found!\n", 337 dev->name, ndev->board->slot); 338 return false; 339 } 340 nubus_get_rsrc_mem(&offset, &ent, 4); 341 dev->mem_start = dev->base_addr + offset; 342 /* yes, this is how the Apple driver does it */ 343 dev->base_addr = dev->mem_start + 0x10000; 344 nubus_rewinddir(&dir); 345 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, 346 &ent) == -1) { 347 pr_info("%s: Memory length resource for slot %X not found, probing\n", 348 dev->name, ndev->board->slot); 349 offset = mac8390_memsize(dev->mem_start); 350 } else { 351 nubus_get_rsrc_mem(&offset, &ent, 4); 352 } 353 dev->mem_end = dev->mem_start + offset; 354 } else { 355 switch (cardtype) { 356 case MAC8390_KINETICS: 357 case MAC8390_DAYNA: /* it's the same */ 358 dev->base_addr = (int)(ndev->board->slot_addr + 359 DAYNA_8390_BASE); 360 dev->mem_start = (int)(ndev->board->slot_addr + 361 DAYNA_8390_MEM); 362 dev->mem_end = dev->mem_start + 363 mac8390_memsize(dev->mem_start); 364 break; 365 case MAC8390_INTERLAN: 366 dev->base_addr = (int)(ndev->board->slot_addr + 367 INTERLAN_8390_BASE); 368 dev->mem_start = (int)(ndev->board->slot_addr + 369 INTERLAN_8390_MEM); 370 dev->mem_end = dev->mem_start + 371 mac8390_memsize(dev->mem_start); 372 break; 373 case MAC8390_CABLETRON: 374 dev->base_addr = (int)(ndev->board->slot_addr + 375 CABLETRON_8390_BASE); 376 dev->mem_start = (int)(ndev->board->slot_addr + 377 CABLETRON_8390_MEM); 378 /* The base address is unreadable if 0x00 379 * has been written to the command register 380 * Reset the chip by writing E8390_NODMA + 381 * E8390_PAGE0 + E8390_STOP just to be 382 * sure 383 */ 384 i = (void *)dev->base_addr; 385 *i = 0x21; 386 dev->mem_end = dev->mem_start + 387 mac8390_memsize(dev->mem_start); 388 break; 389 390 default: 391 pr_err("Card type %s is unsupported, sorry\n", 392 ndev->board->name); 393 return false; 394 } 395 } 396 397 return true; 398 } 399 400 struct net_device * __init mac8390_probe(int unit) 401 { 402 struct net_device *dev; 403 struct nubus_dev *ndev = NULL; 404 int err = -ENODEV; 405 406 static unsigned int slots; 407 408 enum mac8390_type cardtype; 409 410 /* probably should check for Nubus instead */ 411 412 if (!MACH_IS_MAC) 413 return ERR_PTR(-ENODEV); 414 415 dev = ____alloc_ei_netdev(0); 416 if (!dev) 417 return ERR_PTR(-ENOMEM); 418 419 if (unit >= 0) 420 sprintf(dev->name, "eth%d", unit); 421 422 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, 423 ndev))) { 424 /* Have we seen it already? */ 425 if (slots & (1 << ndev->board->slot)) 426 continue; 427 slots |= 1 << ndev->board->slot; 428 429 cardtype = mac8390_ident(ndev); 430 if (cardtype == MAC8390_NONE) 431 continue; 432 433 if (!mac8390_init(dev, ndev, cardtype)) 434 continue; 435 436 /* Do the nasty 8390 stuff */ 437 if (!mac8390_initdev(dev, ndev, cardtype)) 438 break; 439 } 440 441 if (!ndev) 442 goto out; 443 err = register_netdev(dev); 444 if (err) 445 goto out; 446 return dev; 447 448 out: 449 free_netdev(dev); 450 return ERR_PTR(err); 451 } 452 453 #ifdef MODULE 454 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 455 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 456 MODULE_LICENSE("GPL"); 457 458 /* overkill, of course */ 459 static struct net_device *dev_mac8390[15]; 460 int init_module(void) 461 { 462 int i; 463 for (i = 0; i < 15; i++) { 464 struct net_device *dev = mac8390_probe(-1); 465 if (IS_ERR(dev)) 466 break; 467 dev_mac890[i] = dev; 468 } 469 if (!i) { 470 pr_notice("No useable cards found, driver NOT installed.\n"); 471 return -ENODEV; 472 } 473 return 0; 474 } 475 476 void cleanup_module(void) 477 { 478 int i; 479 for (i = 0; i < 15; i++) { 480 struct net_device *dev = dev_mac890[i]; 481 if (dev) { 482 unregister_netdev(dev); 483 free_netdev(dev); 484 } 485 } 486 } 487 488 #endif /* MODULE */ 489 490 static const struct net_device_ops mac8390_netdev_ops = { 491 .ndo_open = mac8390_open, 492 .ndo_stop = mac8390_close, 493 .ndo_start_xmit = __ei_start_xmit, 494 .ndo_tx_timeout = __ei_tx_timeout, 495 .ndo_get_stats = __ei_get_stats, 496 .ndo_set_rx_mode = __ei_set_multicast_list, 497 .ndo_validate_addr = eth_validate_addr, 498 .ndo_set_mac_address = eth_mac_addr, 499 .ndo_change_mtu = eth_change_mtu, 500 #ifdef CONFIG_NET_POLL_CONTROLLER 501 .ndo_poll_controller = __ei_poll, 502 #endif 503 }; 504 505 static int __init mac8390_initdev(struct net_device *dev, 506 struct nubus_dev *ndev, 507 enum mac8390_type type) 508 { 509 static u32 fwrd4_offsets[16] = { 510 0, 4, 8, 12, 511 16, 20, 24, 28, 512 32, 36, 40, 44, 513 48, 52, 56, 60 514 }; 515 static u32 back4_offsets[16] = { 516 60, 56, 52, 48, 517 44, 40, 36, 32, 518 28, 24, 20, 16, 519 12, 8, 4, 0 520 }; 521 static u32 fwrd2_offsets[16] = { 522 0, 2, 4, 6, 523 8, 10, 12, 14, 524 16, 18, 20, 22, 525 24, 26, 28, 30 526 }; 527 528 int access_bitmode = 0; 529 530 /* Now fill in our stuff */ 531 dev->netdev_ops = &mac8390_netdev_ops; 532 533 /* GAR, ei_status is actually a macro even though it looks global */ 534 ei_status.name = cardname[type]; 535 ei_status.word16 = word16[type]; 536 537 /* Cabletron's TX/RX buffers are backwards */ 538 if (type == MAC8390_CABLETRON) { 539 ei_status.tx_start_page = CABLETRON_TX_START_PG; 540 ei_status.rx_start_page = CABLETRON_RX_START_PG; 541 ei_status.stop_page = CABLETRON_RX_STOP_PG; 542 ei_status.rmem_start = dev->mem_start; 543 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 544 } else { 545 ei_status.tx_start_page = WD_START_PG; 546 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 547 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 548 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 549 ei_status.rmem_end = dev->mem_end; 550 } 551 552 /* Fill in model-specific information and functions */ 553 switch (type) { 554 case MAC8390_FARALLON: 555 case MAC8390_APPLE: 556 switch (mac8390_testio(dev->mem_start)) { 557 case ACCESS_UNKNOWN: 558 pr_err("Don't know how to access card memory!\n"); 559 return -ENODEV; 560 break; 561 562 case ACCESS_16: 563 /* 16 bit card, register map is reversed */ 564 ei_status.reset_8390 = mac8390_no_reset; 565 ei_status.block_input = slow_sane_block_input; 566 ei_status.block_output = slow_sane_block_output; 567 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 568 ei_status.reg_offset = back4_offsets; 569 break; 570 571 case ACCESS_32: 572 /* 32 bit card, register map is reversed */ 573 ei_status.reset_8390 = mac8390_no_reset; 574 ei_status.block_input = sane_block_input; 575 ei_status.block_output = sane_block_output; 576 ei_status.get_8390_hdr = sane_get_8390_hdr; 577 ei_status.reg_offset = back4_offsets; 578 access_bitmode = 1; 579 break; 580 } 581 break; 582 583 case MAC8390_ASANTE: 584 /* Some Asante cards pass the 32 bit test 585 * but overwrite system memory when run at 32 bit. 586 * so we run them all at 16 bit. 587 */ 588 ei_status.reset_8390 = mac8390_no_reset; 589 ei_status.block_input = slow_sane_block_input; 590 ei_status.block_output = slow_sane_block_output; 591 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 592 ei_status.reg_offset = back4_offsets; 593 break; 594 595 case MAC8390_CABLETRON: 596 /* 16 bit card, register map is short forward */ 597 ei_status.reset_8390 = mac8390_no_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 = fwrd2_offsets; 602 break; 603 604 case MAC8390_DAYNA: 605 case MAC8390_KINETICS: 606 /* 16 bit memory, register map is forward */ 607 /* dayna and similar */ 608 ei_status.reset_8390 = mac8390_no_reset; 609 ei_status.block_input = dayna_block_input; 610 ei_status.block_output = dayna_block_output; 611 ei_status.get_8390_hdr = dayna_get_8390_hdr; 612 ei_status.reg_offset = fwrd4_offsets; 613 break; 614 615 case MAC8390_INTERLAN: 616 /* 16 bit memory, register map is forward */ 617 ei_status.reset_8390 = interlan_reset; 618 ei_status.block_input = slow_sane_block_input; 619 ei_status.block_output = slow_sane_block_output; 620 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 621 ei_status.reg_offset = fwrd4_offsets; 622 break; 623 624 default: 625 pr_err("Card type %s is unsupported, sorry\n", 626 ndev->board->name); 627 return -ENODEV; 628 } 629 630 __NS8390_init(dev, 0); 631 632 /* Good, done, now spit out some messages */ 633 pr_info("%s: %s in slot %X (type %s)\n", 634 dev->name, ndev->board->name, ndev->board->slot, 635 cardname[type]); 636 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 637 dev->dev_addr, dev->irq, 638 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 639 dev->mem_start, access_bitmode ? 32 : 16); 640 return 0; 641 } 642 643 static int mac8390_open(struct net_device *dev) 644 { 645 int err; 646 647 __ei_open(dev); 648 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 649 if (err) 650 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 651 return err; 652 } 653 654 static int mac8390_close(struct net_device *dev) 655 { 656 free_irq(dev->irq, dev); 657 __ei_close(dev); 658 return 0; 659 } 660 661 static void mac8390_no_reset(struct net_device *dev) 662 { 663 ei_status.txing = 0; 664 if (ei_debug > 1) 665 pr_info("reset not supported\n"); 666 } 667 668 static void interlan_reset(struct net_device *dev) 669 { 670 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 671 if (ei_debug > 1) 672 pr_info("Need to reset the NS8390 t=%lu...", jiffies); 673 ei_status.txing = 0; 674 target[0xC0000] = 0; 675 if (ei_debug > 1) 676 pr_cont("reset complete\n"); 677 } 678 679 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 680 /* directly from daynaport.c by Alan Cox */ 681 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 682 int count) 683 { 684 volatile unsigned char *ptr; 685 unsigned char *target = to; 686 from <<= 1; /* word, skip overhead */ 687 ptr = (unsigned char *)(dev->mem_start+from); 688 /* Leading byte? */ 689 if (from & 2) { 690 *target++ = ptr[-1]; 691 ptr += 2; 692 count--; 693 } 694 while (count >= 2) { 695 *(unsigned short *)target = *(unsigned short volatile *)ptr; 696 ptr += 4; /* skip cruft */ 697 target += 2; 698 count -= 2; 699 } 700 /* Trailing byte? */ 701 if (count) 702 *target = *ptr; 703 } 704 705 static void dayna_memcpy_tocard(struct net_device *dev, int to, 706 const void *from, int count) 707 { 708 volatile unsigned short *ptr; 709 const unsigned char *src = from; 710 to <<= 1; /* word, skip overhead */ 711 ptr = (unsigned short *)(dev->mem_start+to); 712 /* Leading byte? */ 713 if (to & 2) { /* avoid a byte write (stomps on other data) */ 714 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 715 ptr++; 716 count--; 717 } 718 while (count >= 2) { 719 *ptr++ = *(unsigned short *)src; /* Copy and */ 720 ptr++; /* skip cruft */ 721 src += 2; 722 count -= 2; 723 } 724 /* Trailing byte? */ 725 if (count) { 726 /* card doesn't like byte writes */ 727 *ptr = (*ptr & 0x00FF) | (*src << 8); 728 } 729 } 730 731 /* sane block input/output */ 732 static void sane_get_8390_hdr(struct net_device *dev, 733 struct e8390_pkt_hdr *hdr, int ring_page) 734 { 735 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 736 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4); 737 /* Fix endianness */ 738 hdr->count = swab16(hdr->count); 739 } 740 741 static void sane_block_input(struct net_device *dev, int count, 742 struct sk_buff *skb, int ring_offset) 743 { 744 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 745 unsigned long xfer_start = xfer_base + dev->mem_start; 746 747 if (xfer_start + count > ei_status.rmem_end) { 748 /* We must wrap the input move. */ 749 int semi_count = ei_status.rmem_end - xfer_start; 750 memcpy_fromio(skb->data, dev->mem_start + xfer_base, 751 semi_count); 752 count -= semi_count; 753 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start, 754 count); 755 } else { 756 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count); 757 } 758 } 759 760 static void sane_block_output(struct net_device *dev, int count, 761 const unsigned char *buf, int start_page) 762 { 763 long shmem = (start_page - WD_START_PG)<<8; 764 765 memcpy_toio(dev->mem_start + shmem, buf, count); 766 } 767 768 /* dayna block input/output */ 769 static void dayna_get_8390_hdr(struct net_device *dev, 770 struct e8390_pkt_hdr *hdr, int ring_page) 771 { 772 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 773 774 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 775 /* Fix endianness */ 776 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 777 } 778 779 static void dayna_block_input(struct net_device *dev, int count, 780 struct sk_buff *skb, int ring_offset) 781 { 782 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 783 unsigned long xfer_start = xfer_base+dev->mem_start; 784 785 /* Note the offset math is done in card memory space which is word 786 per long onto our space. */ 787 788 if (xfer_start + count > ei_status.rmem_end) { 789 /* We must wrap the input move. */ 790 int semi_count = ei_status.rmem_end - xfer_start; 791 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 792 count -= semi_count; 793 dayna_memcpy_fromcard(dev, skb->data + semi_count, 794 ei_status.rmem_start - dev->mem_start, 795 count); 796 } else { 797 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 798 } 799 } 800 801 static void dayna_block_output(struct net_device *dev, int count, 802 const unsigned char *buf, 803 int start_page) 804 { 805 long shmem = (start_page - WD_START_PG)<<8; 806 807 dayna_memcpy_tocard(dev, shmem, buf, count); 808 } 809 810 /* Cabletron block I/O */ 811 static void slow_sane_get_8390_hdr(struct net_device *dev, 812 struct e8390_pkt_hdr *hdr, 813 int ring_page) 814 { 815 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 816 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 817 /* Register endianism - fix here rather than 8390.c */ 818 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 819 } 820 821 static void slow_sane_block_input(struct net_device *dev, int count, 822 struct sk_buff *skb, int ring_offset) 823 { 824 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 825 unsigned long xfer_start = xfer_base+dev->mem_start; 826 827 if (xfer_start + count > ei_status.rmem_end) { 828 /* We must wrap the input move. */ 829 int semi_count = ei_status.rmem_end - xfer_start; 830 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 831 semi_count); 832 count -= semi_count; 833 word_memcpy_fromcard(skb->data + semi_count, 834 ei_status.rmem_start, count); 835 } else { 836 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 837 count); 838 } 839 } 840 841 static void slow_sane_block_output(struct net_device *dev, int count, 842 const unsigned char *buf, int start_page) 843 { 844 long shmem = (start_page - WD_START_PG)<<8; 845 846 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 847 } 848 849 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 850 { 851 volatile unsigned short *to = (void *)tp; 852 const unsigned short *from = fp; 853 854 count++; 855 count /= 2; 856 857 while (count--) 858 *to++ = *from++; 859 } 860 861 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 862 { 863 unsigned short *to = tp; 864 const volatile unsigned short *from = (const void *)fp; 865 866 count++; 867 count /= 2; 868 869 while (count--) 870 *to++ = *from++; 871 } 872 873 874