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 static u32 mac8390_msg_enable; 171 172 static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev) 173 { 174 switch (dev->dr_sw) { 175 case NUBUS_DRSW_3COM: 176 switch (dev->dr_hw) { 177 case NUBUS_DRHW_APPLE_SONIC_NB: 178 case NUBUS_DRHW_APPLE_SONIC_LC: 179 case NUBUS_DRHW_SONNET: 180 return MAC8390_NONE; 181 default: 182 return MAC8390_APPLE; 183 } 184 break; 185 186 case NUBUS_DRSW_APPLE: 187 switch (dev->dr_hw) { 188 case NUBUS_DRHW_ASANTE_LC: 189 return MAC8390_NONE; 190 case NUBUS_DRHW_CABLETRON: 191 return MAC8390_CABLETRON; 192 default: 193 return MAC8390_APPLE; 194 } 195 break; 196 197 case NUBUS_DRSW_ASANTE: 198 return MAC8390_ASANTE; 199 break; 200 201 case NUBUS_DRSW_TECHWORKS: 202 case NUBUS_DRSW_DAYNA2: 203 case NUBUS_DRSW_DAYNA_LC: 204 if (dev->dr_hw == NUBUS_DRHW_CABLETRON) 205 return MAC8390_CABLETRON; 206 else 207 return MAC8390_APPLE; 208 break; 209 210 case NUBUS_DRSW_FARALLON: 211 return MAC8390_FARALLON; 212 break; 213 214 case NUBUS_DRSW_KINETICS: 215 switch (dev->dr_hw) { 216 case NUBUS_DRHW_INTERLAN: 217 return MAC8390_INTERLAN; 218 default: 219 return MAC8390_KINETICS; 220 } 221 break; 222 223 case NUBUS_DRSW_DAYNA: 224 /* 225 * These correspond to Dayna Sonic cards 226 * which use the macsonic driver 227 */ 228 if (dev->dr_hw == NUBUS_DRHW_SMC9194 || 229 dev->dr_hw == NUBUS_DRHW_INTERLAN) 230 return MAC8390_NONE; 231 else 232 return MAC8390_DAYNA; 233 break; 234 } 235 return MAC8390_NONE; 236 } 237 238 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase) 239 { 240 unsigned long outdata = 0xA5A0B5B0; 241 unsigned long indata = 0x00000000; 242 /* Try writing 32 bits */ 243 memcpy_toio(membase, &outdata, 4); 244 /* Now compare them */ 245 if (memcmp_withio(&outdata, membase, 4) == 0) 246 return ACCESS_32; 247 /* Write 16 bit output */ 248 word_memcpy_tocard(membase, &outdata, 4); 249 /* Now read it back */ 250 word_memcpy_fromcard(&indata, membase, 4); 251 if (outdata == indata) 252 return ACCESS_16; 253 return ACCESS_UNKNOWN; 254 } 255 256 static int __init mac8390_memsize(unsigned long membase) 257 { 258 unsigned long flags; 259 int i, j; 260 261 local_irq_save(flags); 262 /* Check up to 32K in 4K increments */ 263 for (i = 0; i < 8; i++) { 264 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); 265 266 /* Unwriteable - we have a fully decoded card and the 267 RAM end located */ 268 if (hwreg_present(m) == 0) 269 break; 270 271 /* write a distinctive byte */ 272 *m = 0xA5A0 | i; 273 /* check that we read back what we wrote */ 274 if (*m != (0xA5A0 | i)) 275 break; 276 277 /* check for partial decode and wrap */ 278 for (j = 0; j < i; j++) { 279 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); 280 if (*p != (0xA5A0 | j)) 281 break; 282 } 283 } 284 local_irq_restore(flags); 285 /* 286 * in any case, we stopped once we tried one block too many, 287 * or once we reached 32K 288 */ 289 return i * 0x1000; 290 } 291 292 static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev, 293 enum mac8390_type cardtype) 294 { 295 struct nubus_dir dir; 296 struct nubus_dirent ent; 297 int offset; 298 volatile unsigned short *i; 299 300 printk_once(KERN_INFO pr_fmt("%s"), version); 301 302 dev->irq = SLOT2IRQ(ndev->board->slot); 303 /* This is getting to be a habit */ 304 dev->base_addr = (ndev->board->slot_addr | 305 ((ndev->board->slot & 0xf) << 20)); 306 307 /* 308 * Get some Nubus info - we will trust the card's idea 309 * of where its memory and registers are. 310 */ 311 312 if (nubus_get_func_dir(ndev, &dir) == -1) { 313 pr_err("%s: Unable to get Nubus functional directory for slot %X!\n", 314 dev->name, ndev->board->slot); 315 return false; 316 } 317 318 /* Get the MAC address */ 319 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 320 pr_info("%s: Couldn't get MAC address!\n", dev->name); 321 return false; 322 } 323 324 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); 325 326 if (useresources[cardtype] == 1) { 327 nubus_rewinddir(&dir); 328 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, 329 &ent) == -1) { 330 pr_err("%s: Memory offset resource for slot %X not found!\n", 331 dev->name, ndev->board->slot); 332 return false; 333 } 334 nubus_get_rsrc_mem(&offset, &ent, 4); 335 dev->mem_start = dev->base_addr + offset; 336 /* yes, this is how the Apple driver does it */ 337 dev->base_addr = dev->mem_start + 0x10000; 338 nubus_rewinddir(&dir); 339 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, 340 &ent) == -1) { 341 pr_info("%s: Memory length resource for slot %X not found, probing\n", 342 dev->name, ndev->board->slot); 343 offset = mac8390_memsize(dev->mem_start); 344 } else { 345 nubus_get_rsrc_mem(&offset, &ent, 4); 346 } 347 dev->mem_end = dev->mem_start + offset; 348 } else { 349 switch (cardtype) { 350 case MAC8390_KINETICS: 351 case MAC8390_DAYNA: /* it's the same */ 352 dev->base_addr = (int)(ndev->board->slot_addr + 353 DAYNA_8390_BASE); 354 dev->mem_start = (int)(ndev->board->slot_addr + 355 DAYNA_8390_MEM); 356 dev->mem_end = dev->mem_start + 357 mac8390_memsize(dev->mem_start); 358 break; 359 case MAC8390_INTERLAN: 360 dev->base_addr = (int)(ndev->board->slot_addr + 361 INTERLAN_8390_BASE); 362 dev->mem_start = (int)(ndev->board->slot_addr + 363 INTERLAN_8390_MEM); 364 dev->mem_end = dev->mem_start + 365 mac8390_memsize(dev->mem_start); 366 break; 367 case MAC8390_CABLETRON: 368 dev->base_addr = (int)(ndev->board->slot_addr + 369 CABLETRON_8390_BASE); 370 dev->mem_start = (int)(ndev->board->slot_addr + 371 CABLETRON_8390_MEM); 372 /* The base address is unreadable if 0x00 373 * has been written to the command register 374 * Reset the chip by writing E8390_NODMA + 375 * E8390_PAGE0 + E8390_STOP just to be 376 * sure 377 */ 378 i = (void *)dev->base_addr; 379 *i = 0x21; 380 dev->mem_end = dev->mem_start + 381 mac8390_memsize(dev->mem_start); 382 break; 383 384 default: 385 pr_err("Card type %s is unsupported, sorry\n", 386 ndev->board->name); 387 return false; 388 } 389 } 390 391 return true; 392 } 393 394 struct net_device * __init mac8390_probe(int unit) 395 { 396 struct net_device *dev; 397 struct nubus_dev *ndev = NULL; 398 int err = -ENODEV; 399 struct ei_device *ei_local; 400 401 static unsigned int slots; 402 403 enum mac8390_type cardtype; 404 405 /* probably should check for Nubus instead */ 406 407 if (!MACH_IS_MAC) 408 return ERR_PTR(-ENODEV); 409 410 dev = ____alloc_ei_netdev(0); 411 if (!dev) 412 return ERR_PTR(-ENOMEM); 413 414 if (unit >= 0) 415 sprintf(dev->name, "eth%d", unit); 416 417 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, 418 ndev))) { 419 /* Have we seen it already? */ 420 if (slots & (1 << ndev->board->slot)) 421 continue; 422 slots |= 1 << ndev->board->slot; 423 424 cardtype = mac8390_ident(ndev); 425 if (cardtype == MAC8390_NONE) 426 continue; 427 428 if (!mac8390_init(dev, ndev, cardtype)) 429 continue; 430 431 /* Do the nasty 8390 stuff */ 432 if (!mac8390_initdev(dev, ndev, cardtype)) 433 break; 434 } 435 436 if (!ndev) 437 goto out; 438 439 ei_local = netdev_priv(dev); 440 ei_local->msg_enable = mac8390_msg_enable; 441 442 err = register_netdev(dev); 443 if (err) 444 goto out; 445 return dev; 446 447 out: 448 free_netdev(dev); 449 return ERR_PTR(err); 450 } 451 452 #ifdef MODULE 453 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 454 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 455 MODULE_LICENSE("GPL"); 456 457 static struct net_device *dev_mac8390; 458 459 int __init init_module(void) 460 { 461 dev_mac8390 = mac8390_probe(-1); 462 if (IS_ERR(dev_mac8390)) { 463 pr_warn("mac8390: No card found\n"); 464 return PTR_ERR(dev_mac8390); 465 } 466 return 0; 467 } 468 469 void __exit cleanup_module(void) 470 { 471 unregister_netdev(dev_mac8390); 472 free_netdev(dev_mac8390); 473 } 474 475 #endif /* MODULE */ 476 477 static const struct net_device_ops mac8390_netdev_ops = { 478 .ndo_open = mac8390_open, 479 .ndo_stop = mac8390_close, 480 .ndo_start_xmit = __ei_start_xmit, 481 .ndo_tx_timeout = __ei_tx_timeout, 482 .ndo_get_stats = __ei_get_stats, 483 .ndo_set_rx_mode = __ei_set_multicast_list, 484 .ndo_validate_addr = eth_validate_addr, 485 .ndo_set_mac_address = eth_mac_addr, 486 #ifdef CONFIG_NET_POLL_CONTROLLER 487 .ndo_poll_controller = __ei_poll, 488 #endif 489 }; 490 491 static int __init mac8390_initdev(struct net_device *dev, 492 struct nubus_dev *ndev, 493 enum mac8390_type type) 494 { 495 static u32 fwrd4_offsets[16] = { 496 0, 4, 8, 12, 497 16, 20, 24, 28, 498 32, 36, 40, 44, 499 48, 52, 56, 60 500 }; 501 static u32 back4_offsets[16] = { 502 60, 56, 52, 48, 503 44, 40, 36, 32, 504 28, 24, 20, 16, 505 12, 8, 4, 0 506 }; 507 static u32 fwrd2_offsets[16] = { 508 0, 2, 4, 6, 509 8, 10, 12, 14, 510 16, 18, 20, 22, 511 24, 26, 28, 30 512 }; 513 514 int access_bitmode = 0; 515 516 /* Now fill in our stuff */ 517 dev->netdev_ops = &mac8390_netdev_ops; 518 519 /* GAR, ei_status is actually a macro even though it looks global */ 520 ei_status.name = cardname[type]; 521 ei_status.word16 = word16[type]; 522 523 /* Cabletron's TX/RX buffers are backwards */ 524 if (type == MAC8390_CABLETRON) { 525 ei_status.tx_start_page = CABLETRON_TX_START_PG; 526 ei_status.rx_start_page = CABLETRON_RX_START_PG; 527 ei_status.stop_page = CABLETRON_RX_STOP_PG; 528 ei_status.rmem_start = dev->mem_start; 529 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 530 } else { 531 ei_status.tx_start_page = WD_START_PG; 532 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 533 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 534 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 535 ei_status.rmem_end = dev->mem_end; 536 } 537 538 /* Fill in model-specific information and functions */ 539 switch (type) { 540 case MAC8390_FARALLON: 541 case MAC8390_APPLE: 542 switch (mac8390_testio(dev->mem_start)) { 543 case ACCESS_UNKNOWN: 544 pr_err("Don't know how to access card memory!\n"); 545 return -ENODEV; 546 547 case ACCESS_16: 548 /* 16 bit card, register map is reversed */ 549 ei_status.reset_8390 = mac8390_no_reset; 550 ei_status.block_input = slow_sane_block_input; 551 ei_status.block_output = slow_sane_block_output; 552 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 553 ei_status.reg_offset = back4_offsets; 554 break; 555 556 case ACCESS_32: 557 /* 32 bit card, register map is reversed */ 558 ei_status.reset_8390 = mac8390_no_reset; 559 ei_status.block_input = sane_block_input; 560 ei_status.block_output = sane_block_output; 561 ei_status.get_8390_hdr = sane_get_8390_hdr; 562 ei_status.reg_offset = back4_offsets; 563 access_bitmode = 1; 564 break; 565 } 566 break; 567 568 case MAC8390_ASANTE: 569 /* Some Asante cards pass the 32 bit test 570 * but overwrite system memory when run at 32 bit. 571 * so we run them all at 16 bit. 572 */ 573 ei_status.reset_8390 = mac8390_no_reset; 574 ei_status.block_input = slow_sane_block_input; 575 ei_status.block_output = slow_sane_block_output; 576 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 577 ei_status.reg_offset = back4_offsets; 578 break; 579 580 case MAC8390_CABLETRON: 581 /* 16 bit card, register map is short forward */ 582 ei_status.reset_8390 = mac8390_no_reset; 583 ei_status.block_input = slow_sane_block_input; 584 ei_status.block_output = slow_sane_block_output; 585 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 586 ei_status.reg_offset = fwrd2_offsets; 587 break; 588 589 case MAC8390_DAYNA: 590 case MAC8390_KINETICS: 591 /* 16 bit memory, register map is forward */ 592 /* dayna and similar */ 593 ei_status.reset_8390 = mac8390_no_reset; 594 ei_status.block_input = dayna_block_input; 595 ei_status.block_output = dayna_block_output; 596 ei_status.get_8390_hdr = dayna_get_8390_hdr; 597 ei_status.reg_offset = fwrd4_offsets; 598 break; 599 600 case MAC8390_INTERLAN: 601 /* 16 bit memory, register map is forward */ 602 ei_status.reset_8390 = interlan_reset; 603 ei_status.block_input = slow_sane_block_input; 604 ei_status.block_output = slow_sane_block_output; 605 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 606 ei_status.reg_offset = fwrd4_offsets; 607 break; 608 609 default: 610 pr_err("Card type %s is unsupported, sorry\n", 611 ndev->board->name); 612 return -ENODEV; 613 } 614 615 __NS8390_init(dev, 0); 616 617 /* Good, done, now spit out some messages */ 618 pr_info("%s: %s in slot %X (type %s)\n", 619 dev->name, ndev->board->name, ndev->board->slot, 620 cardname[type]); 621 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 622 dev->dev_addr, dev->irq, 623 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 624 dev->mem_start, access_bitmode ? 32 : 16); 625 return 0; 626 } 627 628 static int mac8390_open(struct net_device *dev) 629 { 630 int err; 631 632 __ei_open(dev); 633 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 634 if (err) 635 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 636 return err; 637 } 638 639 static int mac8390_close(struct net_device *dev) 640 { 641 free_irq(dev->irq, dev); 642 __ei_close(dev); 643 return 0; 644 } 645 646 static void mac8390_no_reset(struct net_device *dev) 647 { 648 struct ei_device *ei_local = netdev_priv(dev); 649 650 ei_status.txing = 0; 651 netif_info(ei_local, hw, dev, "reset not supported\n"); 652 } 653 654 static void interlan_reset(struct net_device *dev) 655 { 656 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 657 struct ei_device *ei_local = netdev_priv(dev); 658 659 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 660 jiffies); 661 ei_status.txing = 0; 662 target[0xC0000] = 0; 663 if (netif_msg_hw(ei_local)) 664 pr_cont("reset complete\n"); 665 } 666 667 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 668 /* directly from daynaport.c by Alan Cox */ 669 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 670 int count) 671 { 672 volatile unsigned char *ptr; 673 unsigned char *target = to; 674 from <<= 1; /* word, skip overhead */ 675 ptr = (unsigned char *)(dev->mem_start+from); 676 /* Leading byte? */ 677 if (from & 2) { 678 *target++ = ptr[-1]; 679 ptr += 2; 680 count--; 681 } 682 while (count >= 2) { 683 *(unsigned short *)target = *(unsigned short volatile *)ptr; 684 ptr += 4; /* skip cruft */ 685 target += 2; 686 count -= 2; 687 } 688 /* Trailing byte? */ 689 if (count) 690 *target = *ptr; 691 } 692 693 static void dayna_memcpy_tocard(struct net_device *dev, int to, 694 const void *from, int count) 695 { 696 volatile unsigned short *ptr; 697 const unsigned char *src = from; 698 to <<= 1; /* word, skip overhead */ 699 ptr = (unsigned short *)(dev->mem_start+to); 700 /* Leading byte? */ 701 if (to & 2) { /* avoid a byte write (stomps on other data) */ 702 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 703 ptr++; 704 count--; 705 } 706 while (count >= 2) { 707 *ptr++ = *(unsigned short *)src; /* Copy and */ 708 ptr++; /* skip cruft */ 709 src += 2; 710 count -= 2; 711 } 712 /* Trailing byte? */ 713 if (count) { 714 /* card doesn't like byte writes */ 715 *ptr = (*ptr & 0x00FF) | (*src << 8); 716 } 717 } 718 719 /* sane block input/output */ 720 static void sane_get_8390_hdr(struct net_device *dev, 721 struct e8390_pkt_hdr *hdr, int ring_page) 722 { 723 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 724 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4); 725 /* Fix endianness */ 726 hdr->count = swab16(hdr->count); 727 } 728 729 static void sane_block_input(struct net_device *dev, int count, 730 struct sk_buff *skb, int ring_offset) 731 { 732 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 733 unsigned long xfer_start = xfer_base + dev->mem_start; 734 735 if (xfer_start + count > ei_status.rmem_end) { 736 /* We must wrap the input move. */ 737 int semi_count = ei_status.rmem_end - xfer_start; 738 memcpy_fromio(skb->data, dev->mem_start + xfer_base, 739 semi_count); 740 count -= semi_count; 741 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start, 742 count); 743 } else { 744 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count); 745 } 746 } 747 748 static void sane_block_output(struct net_device *dev, int count, 749 const unsigned char *buf, int start_page) 750 { 751 long shmem = (start_page - WD_START_PG)<<8; 752 753 memcpy_toio(dev->mem_start + shmem, buf, count); 754 } 755 756 /* dayna block input/output */ 757 static void dayna_get_8390_hdr(struct net_device *dev, 758 struct e8390_pkt_hdr *hdr, int ring_page) 759 { 760 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 761 762 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 763 /* Fix endianness */ 764 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 765 } 766 767 static void dayna_block_input(struct net_device *dev, int count, 768 struct sk_buff *skb, int ring_offset) 769 { 770 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 771 unsigned long xfer_start = xfer_base+dev->mem_start; 772 773 /* Note the offset math is done in card memory space which is word 774 per long onto our space. */ 775 776 if (xfer_start + count > ei_status.rmem_end) { 777 /* We must wrap the input move. */ 778 int semi_count = ei_status.rmem_end - xfer_start; 779 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 780 count -= semi_count; 781 dayna_memcpy_fromcard(dev, skb->data + semi_count, 782 ei_status.rmem_start - dev->mem_start, 783 count); 784 } else { 785 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 786 } 787 } 788 789 static void dayna_block_output(struct net_device *dev, int count, 790 const unsigned char *buf, 791 int start_page) 792 { 793 long shmem = (start_page - WD_START_PG)<<8; 794 795 dayna_memcpy_tocard(dev, shmem, buf, count); 796 } 797 798 /* Cabletron block I/O */ 799 static void slow_sane_get_8390_hdr(struct net_device *dev, 800 struct e8390_pkt_hdr *hdr, 801 int ring_page) 802 { 803 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 804 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 805 /* Register endianism - fix here rather than 8390.c */ 806 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 807 } 808 809 static void slow_sane_block_input(struct net_device *dev, int count, 810 struct sk_buff *skb, int ring_offset) 811 { 812 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 813 unsigned long xfer_start = xfer_base+dev->mem_start; 814 815 if (xfer_start + count > ei_status.rmem_end) { 816 /* We must wrap the input move. */ 817 int semi_count = ei_status.rmem_end - xfer_start; 818 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 819 semi_count); 820 count -= semi_count; 821 word_memcpy_fromcard(skb->data + semi_count, 822 ei_status.rmem_start, count); 823 } else { 824 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 825 count); 826 } 827 } 828 829 static void slow_sane_block_output(struct net_device *dev, int count, 830 const unsigned char *buf, int start_page) 831 { 832 long shmem = (start_page - WD_START_PG)<<8; 833 834 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 835 } 836 837 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 838 { 839 volatile unsigned short *to = (void *)tp; 840 const unsigned short *from = fp; 841 842 count++; 843 count /= 2; 844 845 while (count--) 846 *to++ = *from++; 847 } 848 849 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 850 { 851 unsigned short *to = tp; 852 const volatile unsigned short *from = (const void *)fp; 853 854 count++; 855 count /= 2; 856 857 while (count--) 858 *to++ = *from++; 859 } 860 861 862