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, 127 struct nubus_rsrc *ndev, 128 enum mac8390_type type); 129 130 static int mac8390_open(struct net_device *dev); 131 static int mac8390_close(struct net_device *dev); 132 static void mac8390_no_reset(struct net_device *dev); 133 static void interlan_reset(struct net_device *dev); 134 135 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ 136 static void sane_get_8390_hdr(struct net_device *dev, 137 struct e8390_pkt_hdr *hdr, int ring_page); 138 static void sane_block_input(struct net_device *dev, int count, 139 struct sk_buff *skb, int ring_offset); 140 static void sane_block_output(struct net_device *dev, int count, 141 const unsigned char *buf, const int start_page); 142 143 /* dayna_memcpy to and from card */ 144 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, 145 int from, int count); 146 static void dayna_memcpy_tocard(struct net_device *dev, int to, 147 const void *from, int count); 148 149 /* Dayna - Dayna/Kinetics use this */ 150 static void dayna_get_8390_hdr(struct net_device *dev, 151 struct e8390_pkt_hdr *hdr, int ring_page); 152 static void dayna_block_input(struct net_device *dev, int count, 153 struct sk_buff *skb, int ring_offset); 154 static void dayna_block_output(struct net_device *dev, int count, 155 const unsigned char *buf, int start_page); 156 157 #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c)) 158 #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c)) 159 160 #define memcmp_withio(a, b, c) memcmp((a), (void *)(b), (c)) 161 162 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ 163 static void slow_sane_get_8390_hdr(struct net_device *dev, 164 struct e8390_pkt_hdr *hdr, int ring_page); 165 static void slow_sane_block_input(struct net_device *dev, int count, 166 struct sk_buff *skb, int ring_offset); 167 static void slow_sane_block_output(struct net_device *dev, int count, 168 const unsigned char *buf, int start_page); 169 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); 170 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); 171 static u32 mac8390_msg_enable; 172 173 static enum mac8390_type __init mac8390_ident(struct nubus_rsrc *fres) 174 { 175 switch (fres->dr_sw) { 176 case NUBUS_DRSW_3COM: 177 switch (fres->dr_hw) { 178 case NUBUS_DRHW_APPLE_SONIC_NB: 179 case NUBUS_DRHW_APPLE_SONIC_LC: 180 case NUBUS_DRHW_SONNET: 181 return MAC8390_NONE; 182 default: 183 return MAC8390_APPLE; 184 } 185 break; 186 187 case NUBUS_DRSW_APPLE: 188 switch (fres->dr_hw) { 189 case NUBUS_DRHW_ASANTE_LC: 190 return MAC8390_NONE; 191 case NUBUS_DRHW_CABLETRON: 192 return MAC8390_CABLETRON; 193 default: 194 return MAC8390_APPLE; 195 } 196 break; 197 198 case NUBUS_DRSW_ASANTE: 199 return MAC8390_ASANTE; 200 break; 201 202 case NUBUS_DRSW_TECHWORKS: 203 case NUBUS_DRSW_DAYNA2: 204 case NUBUS_DRSW_DAYNA_LC: 205 if (fres->dr_hw == NUBUS_DRHW_CABLETRON) 206 return MAC8390_CABLETRON; 207 else 208 return MAC8390_APPLE; 209 break; 210 211 case NUBUS_DRSW_FARALLON: 212 return MAC8390_FARALLON; 213 break; 214 215 case NUBUS_DRSW_KINETICS: 216 switch (fres->dr_hw) { 217 case NUBUS_DRHW_INTERLAN: 218 return MAC8390_INTERLAN; 219 default: 220 return MAC8390_KINETICS; 221 } 222 break; 223 224 case NUBUS_DRSW_DAYNA: 225 /* 226 * These correspond to Dayna Sonic cards 227 * which use the macsonic driver 228 */ 229 if (fres->dr_hw == NUBUS_DRHW_SMC9194 || 230 fres->dr_hw == NUBUS_DRHW_INTERLAN) 231 return MAC8390_NONE; 232 else 233 return MAC8390_DAYNA; 234 break; 235 } 236 return MAC8390_NONE; 237 } 238 239 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase) 240 { 241 unsigned long outdata = 0xA5A0B5B0; 242 unsigned long indata = 0x00000000; 243 /* Try writing 32 bits */ 244 memcpy_toio(membase, &outdata, 4); 245 /* Now compare them */ 246 if (memcmp_withio(&outdata, membase, 4) == 0) 247 return ACCESS_32; 248 /* Write 16 bit output */ 249 word_memcpy_tocard(membase, &outdata, 4); 250 /* Now read it back */ 251 word_memcpy_fromcard(&indata, membase, 4); 252 if (outdata == indata) 253 return ACCESS_16; 254 return ACCESS_UNKNOWN; 255 } 256 257 static int __init mac8390_memsize(unsigned long membase) 258 { 259 unsigned long flags; 260 int i, j; 261 262 local_irq_save(flags); 263 /* Check up to 32K in 4K increments */ 264 for (i = 0; i < 8; i++) { 265 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); 266 267 /* Unwriteable - we have a fully decoded card and the 268 RAM end located */ 269 if (hwreg_present(m) == 0) 270 break; 271 272 /* write a distinctive byte */ 273 *m = 0xA5A0 | i; 274 /* check that we read back what we wrote */ 275 if (*m != (0xA5A0 | i)) 276 break; 277 278 /* check for partial decode and wrap */ 279 for (j = 0; j < i; j++) { 280 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); 281 if (*p != (0xA5A0 | j)) 282 break; 283 } 284 } 285 local_irq_restore(flags); 286 /* 287 * in any case, we stopped once we tried one block too many, 288 * or once we reached 32K 289 */ 290 return i * 0x1000; 291 } 292 293 static bool __init mac8390_init(struct net_device *dev, 294 struct nubus_rsrc *ndev, 295 enum mac8390_type cardtype) 296 { 297 struct nubus_dir dir; 298 struct nubus_dirent ent; 299 int offset; 300 volatile unsigned short *i; 301 302 printk_once(KERN_INFO pr_fmt("%s"), version); 303 304 dev->irq = SLOT2IRQ(ndev->board->slot); 305 /* This is getting to be a habit */ 306 dev->base_addr = (ndev->board->slot_addr | 307 ((ndev->board->slot & 0xf) << 20)); 308 309 /* 310 * Get some Nubus info - we will trust the card's idea 311 * of where its memory and registers are. 312 */ 313 314 if (nubus_get_func_dir(ndev, &dir) == -1) { 315 pr_err("%s: Unable to get Nubus functional directory for slot %X!\n", 316 dev->name, ndev->board->slot); 317 return false; 318 } 319 320 /* Get the MAC address */ 321 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 322 pr_info("%s: Couldn't get MAC address!\n", dev->name); 323 return false; 324 } 325 326 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); 327 328 if (useresources[cardtype] == 1) { 329 nubus_rewinddir(&dir); 330 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, 331 &ent) == -1) { 332 pr_err("%s: Memory offset resource for slot %X not found!\n", 333 dev->name, ndev->board->slot); 334 return false; 335 } 336 nubus_get_rsrc_mem(&offset, &ent, 4); 337 dev->mem_start = dev->base_addr + offset; 338 /* yes, this is how the Apple driver does it */ 339 dev->base_addr = dev->mem_start + 0x10000; 340 nubus_rewinddir(&dir); 341 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, 342 &ent) == -1) { 343 pr_info("%s: Memory length resource for slot %X not found, probing\n", 344 dev->name, ndev->board->slot); 345 offset = mac8390_memsize(dev->mem_start); 346 } else { 347 nubus_get_rsrc_mem(&offset, &ent, 4); 348 } 349 dev->mem_end = dev->mem_start + offset; 350 } else { 351 switch (cardtype) { 352 case MAC8390_KINETICS: 353 case MAC8390_DAYNA: /* it's the same */ 354 dev->base_addr = (int)(ndev->board->slot_addr + 355 DAYNA_8390_BASE); 356 dev->mem_start = (int)(ndev->board->slot_addr + 357 DAYNA_8390_MEM); 358 dev->mem_end = dev->mem_start + 359 mac8390_memsize(dev->mem_start); 360 break; 361 case MAC8390_INTERLAN: 362 dev->base_addr = (int)(ndev->board->slot_addr + 363 INTERLAN_8390_BASE); 364 dev->mem_start = (int)(ndev->board->slot_addr + 365 INTERLAN_8390_MEM); 366 dev->mem_end = dev->mem_start + 367 mac8390_memsize(dev->mem_start); 368 break; 369 case MAC8390_CABLETRON: 370 dev->base_addr = (int)(ndev->board->slot_addr + 371 CABLETRON_8390_BASE); 372 dev->mem_start = (int)(ndev->board->slot_addr + 373 CABLETRON_8390_MEM); 374 /* The base address is unreadable if 0x00 375 * has been written to the command register 376 * Reset the chip by writing E8390_NODMA + 377 * E8390_PAGE0 + E8390_STOP just to be 378 * sure 379 */ 380 i = (void *)dev->base_addr; 381 *i = 0x21; 382 dev->mem_end = dev->mem_start + 383 mac8390_memsize(dev->mem_start); 384 break; 385 386 default: 387 pr_err("Card type %s is unsupported, sorry\n", 388 ndev->board->name); 389 return false; 390 } 391 } 392 393 return true; 394 } 395 396 struct net_device * __init mac8390_probe(int unit) 397 { 398 struct net_device *dev; 399 struct nubus_rsrc *ndev = NULL; 400 int err = -ENODEV; 401 struct ei_device *ei_local; 402 403 static unsigned int slots; 404 405 enum mac8390_type cardtype; 406 407 /* probably should check for Nubus instead */ 408 409 if (!MACH_IS_MAC) 410 return ERR_PTR(-ENODEV); 411 412 dev = ____alloc_ei_netdev(0); 413 if (!dev) 414 return ERR_PTR(-ENOMEM); 415 416 if (unit >= 0) 417 sprintf(dev->name, "eth%d", unit); 418 419 for_each_func_rsrc(ndev) { 420 if (ndev->category != NUBUS_CAT_NETWORK || 421 ndev->type != NUBUS_TYPE_ETHERNET) 422 continue; 423 424 /* 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; 443 444 ei_local = netdev_priv(dev); 445 ei_local->msg_enable = mac8390_msg_enable; 446 447 err = register_netdev(dev); 448 if (err) 449 goto out; 450 return dev; 451 452 out: 453 free_netdev(dev); 454 return ERR_PTR(err); 455 } 456 457 #ifdef MODULE 458 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 459 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 460 MODULE_LICENSE("GPL"); 461 462 static struct net_device *dev_mac8390; 463 464 int __init init_module(void) 465 { 466 dev_mac8390 = mac8390_probe(-1); 467 if (IS_ERR(dev_mac8390)) { 468 pr_warn("mac8390: No card found\n"); 469 return PTR_ERR(dev_mac8390); 470 } 471 return 0; 472 } 473 474 void __exit cleanup_module(void) 475 { 476 unregister_netdev(dev_mac8390); 477 free_netdev(dev_mac8390); 478 } 479 480 #endif /* MODULE */ 481 482 static const struct net_device_ops mac8390_netdev_ops = { 483 .ndo_open = mac8390_open, 484 .ndo_stop = mac8390_close, 485 .ndo_start_xmit = __ei_start_xmit, 486 .ndo_tx_timeout = __ei_tx_timeout, 487 .ndo_get_stats = __ei_get_stats, 488 .ndo_set_rx_mode = __ei_set_multicast_list, 489 .ndo_validate_addr = eth_validate_addr, 490 .ndo_set_mac_address = eth_mac_addr, 491 #ifdef CONFIG_NET_POLL_CONTROLLER 492 .ndo_poll_controller = __ei_poll, 493 #endif 494 }; 495 496 static int __init mac8390_initdev(struct net_device *dev, 497 struct nubus_rsrc *ndev, 498 enum mac8390_type type) 499 { 500 static u32 fwrd4_offsets[16] = { 501 0, 4, 8, 12, 502 16, 20, 24, 28, 503 32, 36, 40, 44, 504 48, 52, 56, 60 505 }; 506 static u32 back4_offsets[16] = { 507 60, 56, 52, 48, 508 44, 40, 36, 32, 509 28, 24, 20, 16, 510 12, 8, 4, 0 511 }; 512 static u32 fwrd2_offsets[16] = { 513 0, 2, 4, 6, 514 8, 10, 12, 14, 515 16, 18, 20, 22, 516 24, 26, 28, 30 517 }; 518 519 int access_bitmode = 0; 520 521 /* Now fill in our stuff */ 522 dev->netdev_ops = &mac8390_netdev_ops; 523 524 /* GAR, ei_status is actually a macro even though it looks global */ 525 ei_status.name = cardname[type]; 526 ei_status.word16 = word16[type]; 527 528 /* Cabletron's TX/RX buffers are backwards */ 529 if (type == MAC8390_CABLETRON) { 530 ei_status.tx_start_page = CABLETRON_TX_START_PG; 531 ei_status.rx_start_page = CABLETRON_RX_START_PG; 532 ei_status.stop_page = CABLETRON_RX_STOP_PG; 533 ei_status.rmem_start = dev->mem_start; 534 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 535 } else { 536 ei_status.tx_start_page = WD_START_PG; 537 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 538 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 539 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 540 ei_status.rmem_end = dev->mem_end; 541 } 542 543 /* Fill in model-specific information and functions */ 544 switch (type) { 545 case MAC8390_FARALLON: 546 case MAC8390_APPLE: 547 switch (mac8390_testio(dev->mem_start)) { 548 case ACCESS_UNKNOWN: 549 pr_err("Don't know how to access card memory!\n"); 550 return -ENODEV; 551 552 case ACCESS_16: 553 /* 16 bit card, register map is reversed */ 554 ei_status.reset_8390 = mac8390_no_reset; 555 ei_status.block_input = slow_sane_block_input; 556 ei_status.block_output = slow_sane_block_output; 557 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 558 ei_status.reg_offset = back4_offsets; 559 break; 560 561 case ACCESS_32: 562 /* 32 bit card, register map is reversed */ 563 ei_status.reset_8390 = mac8390_no_reset; 564 ei_status.block_input = sane_block_input; 565 ei_status.block_output = sane_block_output; 566 ei_status.get_8390_hdr = sane_get_8390_hdr; 567 ei_status.reg_offset = back4_offsets; 568 access_bitmode = 1; 569 break; 570 } 571 break; 572 573 case MAC8390_ASANTE: 574 /* Some Asante cards pass the 32 bit test 575 * but overwrite system memory when run at 32 bit. 576 * so we run them all at 16 bit. 577 */ 578 ei_status.reset_8390 = mac8390_no_reset; 579 ei_status.block_input = slow_sane_block_input; 580 ei_status.block_output = slow_sane_block_output; 581 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 582 ei_status.reg_offset = back4_offsets; 583 break; 584 585 case MAC8390_CABLETRON: 586 /* 16 bit card, register map is short forward */ 587 ei_status.reset_8390 = mac8390_no_reset; 588 ei_status.block_input = slow_sane_block_input; 589 ei_status.block_output = slow_sane_block_output; 590 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 591 ei_status.reg_offset = fwrd2_offsets; 592 break; 593 594 case MAC8390_DAYNA: 595 case MAC8390_KINETICS: 596 /* 16 bit memory, register map is forward */ 597 /* dayna and similar */ 598 ei_status.reset_8390 = mac8390_no_reset; 599 ei_status.block_input = dayna_block_input; 600 ei_status.block_output = dayna_block_output; 601 ei_status.get_8390_hdr = dayna_get_8390_hdr; 602 ei_status.reg_offset = fwrd4_offsets; 603 break; 604 605 case MAC8390_INTERLAN: 606 /* 16 bit memory, register map is forward */ 607 ei_status.reset_8390 = interlan_reset; 608 ei_status.block_input = slow_sane_block_input; 609 ei_status.block_output = slow_sane_block_output; 610 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 611 ei_status.reg_offset = fwrd4_offsets; 612 break; 613 614 default: 615 pr_err("Card type %s is unsupported, sorry\n", 616 ndev->board->name); 617 return -ENODEV; 618 } 619 620 __NS8390_init(dev, 0); 621 622 /* Good, done, now spit out some messages */ 623 pr_info("%s: %s in slot %X (type %s)\n", 624 dev->name, ndev->board->name, ndev->board->slot, 625 cardname[type]); 626 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 627 dev->dev_addr, dev->irq, 628 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 629 dev->mem_start, access_bitmode ? 32 : 16); 630 return 0; 631 } 632 633 static int mac8390_open(struct net_device *dev) 634 { 635 int err; 636 637 __ei_open(dev); 638 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 639 if (err) 640 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 641 return err; 642 } 643 644 static int mac8390_close(struct net_device *dev) 645 { 646 free_irq(dev->irq, dev); 647 __ei_close(dev); 648 return 0; 649 } 650 651 static void mac8390_no_reset(struct net_device *dev) 652 { 653 struct ei_device *ei_local = netdev_priv(dev); 654 655 ei_status.txing = 0; 656 netif_info(ei_local, hw, dev, "reset not supported\n"); 657 } 658 659 static void interlan_reset(struct net_device *dev) 660 { 661 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 662 struct ei_device *ei_local = netdev_priv(dev); 663 664 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 665 jiffies); 666 ei_status.txing = 0; 667 target[0xC0000] = 0; 668 if (netif_msg_hw(ei_local)) 669 pr_cont("reset complete\n"); 670 } 671 672 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 673 /* directly from daynaport.c by Alan Cox */ 674 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 675 int count) 676 { 677 volatile unsigned char *ptr; 678 unsigned char *target = to; 679 from <<= 1; /* word, skip overhead */ 680 ptr = (unsigned char *)(dev->mem_start+from); 681 /* Leading byte? */ 682 if (from & 2) { 683 *target++ = ptr[-1]; 684 ptr += 2; 685 count--; 686 } 687 while (count >= 2) { 688 *(unsigned short *)target = *(unsigned short volatile *)ptr; 689 ptr += 4; /* skip cruft */ 690 target += 2; 691 count -= 2; 692 } 693 /* Trailing byte? */ 694 if (count) 695 *target = *ptr; 696 } 697 698 static void dayna_memcpy_tocard(struct net_device *dev, int to, 699 const void *from, int count) 700 { 701 volatile unsigned short *ptr; 702 const unsigned char *src = from; 703 to <<= 1; /* word, skip overhead */ 704 ptr = (unsigned short *)(dev->mem_start+to); 705 /* Leading byte? */ 706 if (to & 2) { /* avoid a byte write (stomps on other data) */ 707 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 708 ptr++; 709 count--; 710 } 711 while (count >= 2) { 712 *ptr++ = *(unsigned short *)src; /* Copy and */ 713 ptr++; /* skip cruft */ 714 src += 2; 715 count -= 2; 716 } 717 /* Trailing byte? */ 718 if (count) { 719 /* card doesn't like byte writes */ 720 *ptr = (*ptr & 0x00FF) | (*src << 8); 721 } 722 } 723 724 /* sane block input/output */ 725 static void sane_get_8390_hdr(struct net_device *dev, 726 struct e8390_pkt_hdr *hdr, int ring_page) 727 { 728 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 729 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4); 730 /* Fix endianness */ 731 hdr->count = swab16(hdr->count); 732 } 733 734 static void sane_block_input(struct net_device *dev, int count, 735 struct sk_buff *skb, int ring_offset) 736 { 737 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 738 unsigned long xfer_start = xfer_base + dev->mem_start; 739 740 if (xfer_start + count > ei_status.rmem_end) { 741 /* We must wrap the input move. */ 742 int semi_count = ei_status.rmem_end - xfer_start; 743 memcpy_fromio(skb->data, dev->mem_start + xfer_base, 744 semi_count); 745 count -= semi_count; 746 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start, 747 count); 748 } else { 749 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count); 750 } 751 } 752 753 static void sane_block_output(struct net_device *dev, int count, 754 const unsigned char *buf, int start_page) 755 { 756 long shmem = (start_page - WD_START_PG)<<8; 757 758 memcpy_toio(dev->mem_start + shmem, buf, count); 759 } 760 761 /* dayna block input/output */ 762 static void dayna_get_8390_hdr(struct net_device *dev, 763 struct e8390_pkt_hdr *hdr, int ring_page) 764 { 765 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 766 767 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 768 /* Fix endianness */ 769 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 770 } 771 772 static void dayna_block_input(struct net_device *dev, int count, 773 struct sk_buff *skb, int ring_offset) 774 { 775 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 776 unsigned long xfer_start = xfer_base+dev->mem_start; 777 778 /* Note the offset math is done in card memory space which is word 779 per long onto our space. */ 780 781 if (xfer_start + count > ei_status.rmem_end) { 782 /* We must wrap the input move. */ 783 int semi_count = ei_status.rmem_end - xfer_start; 784 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 785 count -= semi_count; 786 dayna_memcpy_fromcard(dev, skb->data + semi_count, 787 ei_status.rmem_start - dev->mem_start, 788 count); 789 } else { 790 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 791 } 792 } 793 794 static void dayna_block_output(struct net_device *dev, int count, 795 const unsigned char *buf, 796 int start_page) 797 { 798 long shmem = (start_page - WD_START_PG)<<8; 799 800 dayna_memcpy_tocard(dev, shmem, buf, count); 801 } 802 803 /* Cabletron block I/O */ 804 static void slow_sane_get_8390_hdr(struct net_device *dev, 805 struct e8390_pkt_hdr *hdr, 806 int ring_page) 807 { 808 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 809 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 810 /* Register endianism - fix here rather than 8390.c */ 811 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 812 } 813 814 static void slow_sane_block_input(struct net_device *dev, int count, 815 struct sk_buff *skb, int ring_offset) 816 { 817 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 818 unsigned long xfer_start = xfer_base+dev->mem_start; 819 820 if (xfer_start + count > ei_status.rmem_end) { 821 /* We must wrap the input move. */ 822 int semi_count = ei_status.rmem_end - xfer_start; 823 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 824 semi_count); 825 count -= semi_count; 826 word_memcpy_fromcard(skb->data + semi_count, 827 ei_status.rmem_start, count); 828 } else { 829 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 830 count); 831 } 832 } 833 834 static void slow_sane_block_output(struct net_device *dev, int count, 835 const unsigned char *buf, int start_page) 836 { 837 long shmem = (start_page - WD_START_PG)<<8; 838 839 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 840 } 841 842 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 843 { 844 volatile unsigned short *to = (void *)tp; 845 const unsigned short *from = fp; 846 847 count++; 848 count /= 2; 849 850 while (count--) 851 *to++ = *from++; 852 } 853 854 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 855 { 856 unsigned short *to = tp; 857 const volatile unsigned short *from = (const void *)fp; 858 859 count++; 860 count /= 2; 861 862 while (count--) 863 *to++ = *from++; 864 } 865 866 867