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 .ndo_change_mtu = eth_change_mtu, 487 #ifdef CONFIG_NET_POLL_CONTROLLER 488 .ndo_poll_controller = __ei_poll, 489 #endif 490 }; 491 492 static int __init mac8390_initdev(struct net_device *dev, 493 struct nubus_dev *ndev, 494 enum mac8390_type type) 495 { 496 static u32 fwrd4_offsets[16] = { 497 0, 4, 8, 12, 498 16, 20, 24, 28, 499 32, 36, 40, 44, 500 48, 52, 56, 60 501 }; 502 static u32 back4_offsets[16] = { 503 60, 56, 52, 48, 504 44, 40, 36, 32, 505 28, 24, 20, 16, 506 12, 8, 4, 0 507 }; 508 static u32 fwrd2_offsets[16] = { 509 0, 2, 4, 6, 510 8, 10, 12, 14, 511 16, 18, 20, 22, 512 24, 26, 28, 30 513 }; 514 515 int access_bitmode = 0; 516 517 /* Now fill in our stuff */ 518 dev->netdev_ops = &mac8390_netdev_ops; 519 520 /* GAR, ei_status is actually a macro even though it looks global */ 521 ei_status.name = cardname[type]; 522 ei_status.word16 = word16[type]; 523 524 /* Cabletron's TX/RX buffers are backwards */ 525 if (type == MAC8390_CABLETRON) { 526 ei_status.tx_start_page = CABLETRON_TX_START_PG; 527 ei_status.rx_start_page = CABLETRON_RX_START_PG; 528 ei_status.stop_page = CABLETRON_RX_STOP_PG; 529 ei_status.rmem_start = dev->mem_start; 530 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 531 } else { 532 ei_status.tx_start_page = WD_START_PG; 533 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 534 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 535 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 536 ei_status.rmem_end = dev->mem_end; 537 } 538 539 /* Fill in model-specific information and functions */ 540 switch (type) { 541 case MAC8390_FARALLON: 542 case MAC8390_APPLE: 543 switch (mac8390_testio(dev->mem_start)) { 544 case ACCESS_UNKNOWN: 545 pr_err("Don't know how to access card memory!\n"); 546 return -ENODEV; 547 548 case ACCESS_16: 549 /* 16 bit card, register map is reversed */ 550 ei_status.reset_8390 = mac8390_no_reset; 551 ei_status.block_input = slow_sane_block_input; 552 ei_status.block_output = slow_sane_block_output; 553 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 554 ei_status.reg_offset = back4_offsets; 555 break; 556 557 case ACCESS_32: 558 /* 32 bit card, register map is reversed */ 559 ei_status.reset_8390 = mac8390_no_reset; 560 ei_status.block_input = sane_block_input; 561 ei_status.block_output = sane_block_output; 562 ei_status.get_8390_hdr = sane_get_8390_hdr; 563 ei_status.reg_offset = back4_offsets; 564 access_bitmode = 1; 565 break; 566 } 567 break; 568 569 case MAC8390_ASANTE: 570 /* Some Asante cards pass the 32 bit test 571 * but overwrite system memory when run at 32 bit. 572 * so we run them all at 16 bit. 573 */ 574 ei_status.reset_8390 = mac8390_no_reset; 575 ei_status.block_input = slow_sane_block_input; 576 ei_status.block_output = slow_sane_block_output; 577 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 578 ei_status.reg_offset = back4_offsets; 579 break; 580 581 case MAC8390_CABLETRON: 582 /* 16 bit card, register map is short forward */ 583 ei_status.reset_8390 = mac8390_no_reset; 584 ei_status.block_input = slow_sane_block_input; 585 ei_status.block_output = slow_sane_block_output; 586 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 587 ei_status.reg_offset = fwrd2_offsets; 588 break; 589 590 case MAC8390_DAYNA: 591 case MAC8390_KINETICS: 592 /* 16 bit memory, register map is forward */ 593 /* dayna and similar */ 594 ei_status.reset_8390 = mac8390_no_reset; 595 ei_status.block_input = dayna_block_input; 596 ei_status.block_output = dayna_block_output; 597 ei_status.get_8390_hdr = dayna_get_8390_hdr; 598 ei_status.reg_offset = fwrd4_offsets; 599 break; 600 601 case MAC8390_INTERLAN: 602 /* 16 bit memory, register map is forward */ 603 ei_status.reset_8390 = interlan_reset; 604 ei_status.block_input = slow_sane_block_input; 605 ei_status.block_output = slow_sane_block_output; 606 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 607 ei_status.reg_offset = fwrd4_offsets; 608 break; 609 610 default: 611 pr_err("Card type %s is unsupported, sorry\n", 612 ndev->board->name); 613 return -ENODEV; 614 } 615 616 __NS8390_init(dev, 0); 617 618 /* Good, done, now spit out some messages */ 619 pr_info("%s: %s in slot %X (type %s)\n", 620 dev->name, ndev->board->name, ndev->board->slot, 621 cardname[type]); 622 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 623 dev->dev_addr, dev->irq, 624 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 625 dev->mem_start, access_bitmode ? 32 : 16); 626 return 0; 627 } 628 629 static int mac8390_open(struct net_device *dev) 630 { 631 int err; 632 633 __ei_open(dev); 634 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 635 if (err) 636 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 637 return err; 638 } 639 640 static int mac8390_close(struct net_device *dev) 641 { 642 free_irq(dev->irq, dev); 643 __ei_close(dev); 644 return 0; 645 } 646 647 static void mac8390_no_reset(struct net_device *dev) 648 { 649 struct ei_device *ei_local = netdev_priv(dev); 650 651 ei_status.txing = 0; 652 netif_info(ei_local, hw, dev, "reset not supported\n"); 653 } 654 655 static void interlan_reset(struct net_device *dev) 656 { 657 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 658 struct ei_device *ei_local = netdev_priv(dev); 659 660 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 661 jiffies); 662 ei_status.txing = 0; 663 target[0xC0000] = 0; 664 if (netif_msg_hw(ei_local)) 665 pr_cont("reset complete\n"); 666 } 667 668 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 669 /* directly from daynaport.c by Alan Cox */ 670 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 671 int count) 672 { 673 volatile unsigned char *ptr; 674 unsigned char *target = to; 675 from <<= 1; /* word, skip overhead */ 676 ptr = (unsigned char *)(dev->mem_start+from); 677 /* Leading byte? */ 678 if (from & 2) { 679 *target++ = ptr[-1]; 680 ptr += 2; 681 count--; 682 } 683 while (count >= 2) { 684 *(unsigned short *)target = *(unsigned short volatile *)ptr; 685 ptr += 4; /* skip cruft */ 686 target += 2; 687 count -= 2; 688 } 689 /* Trailing byte? */ 690 if (count) 691 *target = *ptr; 692 } 693 694 static void dayna_memcpy_tocard(struct net_device *dev, int to, 695 const void *from, int count) 696 { 697 volatile unsigned short *ptr; 698 const unsigned char *src = from; 699 to <<= 1; /* word, skip overhead */ 700 ptr = (unsigned short *)(dev->mem_start+to); 701 /* Leading byte? */ 702 if (to & 2) { /* avoid a byte write (stomps on other data) */ 703 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 704 ptr++; 705 count--; 706 } 707 while (count >= 2) { 708 *ptr++ = *(unsigned short *)src; /* Copy and */ 709 ptr++; /* skip cruft */ 710 src += 2; 711 count -= 2; 712 } 713 /* Trailing byte? */ 714 if (count) { 715 /* card doesn't like byte writes */ 716 *ptr = (*ptr & 0x00FF) | (*src << 8); 717 } 718 } 719 720 /* sane block input/output */ 721 static void sane_get_8390_hdr(struct net_device *dev, 722 struct e8390_pkt_hdr *hdr, int ring_page) 723 { 724 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 725 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4); 726 /* Fix endianness */ 727 hdr->count = swab16(hdr->count); 728 } 729 730 static void sane_block_input(struct net_device *dev, int count, 731 struct sk_buff *skb, int ring_offset) 732 { 733 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 734 unsigned long xfer_start = xfer_base + dev->mem_start; 735 736 if (xfer_start + count > ei_status.rmem_end) { 737 /* We must wrap the input move. */ 738 int semi_count = ei_status.rmem_end - xfer_start; 739 memcpy_fromio(skb->data, dev->mem_start + xfer_base, 740 semi_count); 741 count -= semi_count; 742 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start, 743 count); 744 } else { 745 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count); 746 } 747 } 748 749 static void sane_block_output(struct net_device *dev, int count, 750 const unsigned char *buf, int start_page) 751 { 752 long shmem = (start_page - WD_START_PG)<<8; 753 754 memcpy_toio(dev->mem_start + shmem, buf, count); 755 } 756 757 /* dayna block input/output */ 758 static void dayna_get_8390_hdr(struct net_device *dev, 759 struct e8390_pkt_hdr *hdr, int ring_page) 760 { 761 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 762 763 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 764 /* Fix endianness */ 765 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 766 } 767 768 static void dayna_block_input(struct net_device *dev, int count, 769 struct sk_buff *skb, int ring_offset) 770 { 771 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 772 unsigned long xfer_start = xfer_base+dev->mem_start; 773 774 /* Note the offset math is done in card memory space which is word 775 per long onto our space. */ 776 777 if (xfer_start + count > ei_status.rmem_end) { 778 /* We must wrap the input move. */ 779 int semi_count = ei_status.rmem_end - xfer_start; 780 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 781 count -= semi_count; 782 dayna_memcpy_fromcard(dev, skb->data + semi_count, 783 ei_status.rmem_start - dev->mem_start, 784 count); 785 } else { 786 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 787 } 788 } 789 790 static void dayna_block_output(struct net_device *dev, int count, 791 const unsigned char *buf, 792 int start_page) 793 { 794 long shmem = (start_page - WD_START_PG)<<8; 795 796 dayna_memcpy_tocard(dev, shmem, buf, count); 797 } 798 799 /* Cabletron block I/O */ 800 static void slow_sane_get_8390_hdr(struct net_device *dev, 801 struct e8390_pkt_hdr *hdr, 802 int ring_page) 803 { 804 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 805 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 806 /* Register endianism - fix here rather than 8390.c */ 807 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 808 } 809 810 static void slow_sane_block_input(struct net_device *dev, int count, 811 struct sk_buff *skb, int ring_offset) 812 { 813 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 814 unsigned long xfer_start = xfer_base+dev->mem_start; 815 816 if (xfer_start + count > ei_status.rmem_end) { 817 /* We must wrap the input move. */ 818 int semi_count = ei_status.rmem_end - xfer_start; 819 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 820 semi_count); 821 count -= semi_count; 822 word_memcpy_fromcard(skb->data + semi_count, 823 ei_status.rmem_start, count); 824 } else { 825 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 826 count); 827 } 828 } 829 830 static void slow_sane_block_output(struct net_device *dev, int count, 831 const unsigned char *buf, int start_page) 832 { 833 long shmem = (start_page - WD_START_PG)<<8; 834 835 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 836 } 837 838 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 839 { 840 volatile unsigned short *to = (void *)tp; 841 const unsigned short *from = fp; 842 843 count++; 844 count /= 2; 845 846 while (count--) 847 *to++ = *from++; 848 } 849 850 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 851 { 852 unsigned short *to = tp; 853 const volatile unsigned short *from = (const void *)fp; 854 855 count++; 856 count /= 2; 857 858 while (count--) 859 *to++ = *from++; 860 } 861 862 863