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 break; 182 default: 183 return MAC8390_APPLE; 184 break; 185 } 186 break; 187 188 case NUBUS_DRSW_APPLE: 189 switch (dev->dr_hw) { 190 case NUBUS_DRHW_ASANTE_LC: 191 return MAC8390_NONE; 192 break; 193 case NUBUS_DRHW_CABLETRON: 194 return MAC8390_CABLETRON; 195 break; 196 default: 197 return MAC8390_APPLE; 198 break; 199 } 200 break; 201 202 case NUBUS_DRSW_ASANTE: 203 return MAC8390_ASANTE; 204 break; 205 206 case NUBUS_DRSW_TECHWORKS: 207 case NUBUS_DRSW_DAYNA2: 208 case NUBUS_DRSW_DAYNA_LC: 209 if (dev->dr_hw == NUBUS_DRHW_CABLETRON) 210 return MAC8390_CABLETRON; 211 else 212 return MAC8390_APPLE; 213 break; 214 215 case NUBUS_DRSW_FARALLON: 216 return MAC8390_FARALLON; 217 break; 218 219 case NUBUS_DRSW_KINETICS: 220 switch (dev->dr_hw) { 221 case NUBUS_DRHW_INTERLAN: 222 return MAC8390_INTERLAN; 223 break; 224 default: 225 return MAC8390_KINETICS; 226 break; 227 } 228 break; 229 230 case NUBUS_DRSW_DAYNA: 231 /* 232 * These correspond to Dayna Sonic cards 233 * which use the macsonic driver 234 */ 235 if (dev->dr_hw == NUBUS_DRHW_SMC9194 || 236 dev->dr_hw == NUBUS_DRHW_INTERLAN) 237 return MAC8390_NONE; 238 else 239 return MAC8390_DAYNA; 240 break; 241 } 242 return MAC8390_NONE; 243 } 244 245 static enum mac8390_access __init mac8390_testio(volatile unsigned long membase) 246 { 247 unsigned long outdata = 0xA5A0B5B0; 248 unsigned long indata = 0x00000000; 249 /* Try writing 32 bits */ 250 memcpy_toio(membase, &outdata, 4); 251 /* Now compare them */ 252 if (memcmp_withio(&outdata, membase, 4) == 0) 253 return ACCESS_32; 254 /* Write 16 bit output */ 255 word_memcpy_tocard(membase, &outdata, 4); 256 /* Now read it back */ 257 word_memcpy_fromcard(&indata, membase, 4); 258 if (outdata == indata) 259 return ACCESS_16; 260 return ACCESS_UNKNOWN; 261 } 262 263 static int __init mac8390_memsize(unsigned long membase) 264 { 265 unsigned long flags; 266 int i, j; 267 268 local_irq_save(flags); 269 /* Check up to 32K in 4K increments */ 270 for (i = 0; i < 8; i++) { 271 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); 272 273 /* Unwriteable - we have a fully decoded card and the 274 RAM end located */ 275 if (hwreg_present(m) == 0) 276 break; 277 278 /* write a distinctive byte */ 279 *m = 0xA5A0 | i; 280 /* check that we read back what we wrote */ 281 if (*m != (0xA5A0 | i)) 282 break; 283 284 /* check for partial decode and wrap */ 285 for (j = 0; j < i; j++) { 286 volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); 287 if (*p != (0xA5A0 | j)) 288 break; 289 } 290 } 291 local_irq_restore(flags); 292 /* 293 * in any case, we stopped once we tried one block too many, 294 * or once we reached 32K 295 */ 296 return i * 0x1000; 297 } 298 299 static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev, 300 enum mac8390_type cardtype) 301 { 302 struct nubus_dir dir; 303 struct nubus_dirent ent; 304 int offset; 305 volatile unsigned short *i; 306 307 printk_once(KERN_INFO pr_fmt("%s"), version); 308 309 dev->irq = SLOT2IRQ(ndev->board->slot); 310 /* This is getting to be a habit */ 311 dev->base_addr = (ndev->board->slot_addr | 312 ((ndev->board->slot & 0xf) << 20)); 313 314 /* 315 * Get some Nubus info - we will trust the card's idea 316 * of where its memory and registers are. 317 */ 318 319 if (nubus_get_func_dir(ndev, &dir) == -1) { 320 pr_err("%s: Unable to get Nubus functional directory for slot %X!\n", 321 dev->name, ndev->board->slot); 322 return false; 323 } 324 325 /* Get the MAC address */ 326 if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) { 327 pr_info("%s: Couldn't get MAC address!\n", dev->name); 328 return false; 329 } 330 331 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); 332 333 if (useresources[cardtype] == 1) { 334 nubus_rewinddir(&dir); 335 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, 336 &ent) == -1) { 337 pr_err("%s: Memory offset resource for slot %X not found!\n", 338 dev->name, ndev->board->slot); 339 return false; 340 } 341 nubus_get_rsrc_mem(&offset, &ent, 4); 342 dev->mem_start = dev->base_addr + offset; 343 /* yes, this is how the Apple driver does it */ 344 dev->base_addr = dev->mem_start + 0x10000; 345 nubus_rewinddir(&dir); 346 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, 347 &ent) == -1) { 348 pr_info("%s: Memory length resource for slot %X not found, probing\n", 349 dev->name, ndev->board->slot); 350 offset = mac8390_memsize(dev->mem_start); 351 } else { 352 nubus_get_rsrc_mem(&offset, &ent, 4); 353 } 354 dev->mem_end = dev->mem_start + offset; 355 } else { 356 switch (cardtype) { 357 case MAC8390_KINETICS: 358 case MAC8390_DAYNA: /* it's the same */ 359 dev->base_addr = (int)(ndev->board->slot_addr + 360 DAYNA_8390_BASE); 361 dev->mem_start = (int)(ndev->board->slot_addr + 362 DAYNA_8390_MEM); 363 dev->mem_end = dev->mem_start + 364 mac8390_memsize(dev->mem_start); 365 break; 366 case MAC8390_INTERLAN: 367 dev->base_addr = (int)(ndev->board->slot_addr + 368 INTERLAN_8390_BASE); 369 dev->mem_start = (int)(ndev->board->slot_addr + 370 INTERLAN_8390_MEM); 371 dev->mem_end = dev->mem_start + 372 mac8390_memsize(dev->mem_start); 373 break; 374 case MAC8390_CABLETRON: 375 dev->base_addr = (int)(ndev->board->slot_addr + 376 CABLETRON_8390_BASE); 377 dev->mem_start = (int)(ndev->board->slot_addr + 378 CABLETRON_8390_MEM); 379 /* The base address is unreadable if 0x00 380 * has been written to the command register 381 * Reset the chip by writing E8390_NODMA + 382 * E8390_PAGE0 + E8390_STOP just to be 383 * sure 384 */ 385 i = (void *)dev->base_addr; 386 *i = 0x21; 387 dev->mem_end = dev->mem_start + 388 mac8390_memsize(dev->mem_start); 389 break; 390 391 default: 392 pr_err("Card type %s is unsupported, sorry\n", 393 ndev->board->name); 394 return false; 395 } 396 } 397 398 return true; 399 } 400 401 struct net_device * __init mac8390_probe(int unit) 402 { 403 struct net_device *dev; 404 struct nubus_dev *ndev = NULL; 405 int err = -ENODEV; 406 struct ei_device *ei_local; 407 408 static unsigned int slots; 409 410 enum mac8390_type cardtype; 411 412 /* probably should check for Nubus instead */ 413 414 if (!MACH_IS_MAC) 415 return ERR_PTR(-ENODEV); 416 417 dev = ____alloc_ei_netdev(0); 418 if (!dev) 419 return ERR_PTR(-ENOMEM); 420 421 if (unit >= 0) 422 sprintf(dev->name, "eth%d", unit); 423 424 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, 425 ndev))) { 426 /* Have we seen it already? */ 427 if (slots & (1 << ndev->board->slot)) 428 continue; 429 slots |= 1 << ndev->board->slot; 430 431 cardtype = mac8390_ident(ndev); 432 if (cardtype == MAC8390_NONE) 433 continue; 434 435 if (!mac8390_init(dev, ndev, cardtype)) 436 continue; 437 438 /* Do the nasty 8390 stuff */ 439 if (!mac8390_initdev(dev, ndev, cardtype)) 440 break; 441 } 442 443 if (!ndev) 444 goto out; 445 446 ei_local = netdev_priv(dev); 447 ei_local->msg_enable = mac8390_msg_enable; 448 449 err = register_netdev(dev); 450 if (err) 451 goto out; 452 return dev; 453 454 out: 455 free_netdev(dev); 456 return ERR_PTR(err); 457 } 458 459 #ifdef MODULE 460 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 461 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 462 MODULE_LICENSE("GPL"); 463 464 /* overkill, of course */ 465 static struct net_device *dev_mac8390[15]; 466 int init_module(void) 467 { 468 int i; 469 for (i = 0; i < 15; i++) { 470 struct net_device *dev = mac8390_probe(-1); 471 if (IS_ERR(dev)) 472 break; 473 dev_mac890[i] = dev; 474 } 475 if (!i) { 476 pr_notice("No useable cards found, driver NOT installed.\n"); 477 return -ENODEV; 478 } 479 return 0; 480 } 481 482 void cleanup_module(void) 483 { 484 int i; 485 for (i = 0; i < 15; i++) { 486 struct net_device *dev = dev_mac890[i]; 487 if (dev) { 488 unregister_netdev(dev); 489 free_netdev(dev); 490 } 491 } 492 } 493 494 #endif /* MODULE */ 495 496 static const struct net_device_ops mac8390_netdev_ops = { 497 .ndo_open = mac8390_open, 498 .ndo_stop = mac8390_close, 499 .ndo_start_xmit = __ei_start_xmit, 500 .ndo_tx_timeout = __ei_tx_timeout, 501 .ndo_get_stats = __ei_get_stats, 502 .ndo_set_rx_mode = __ei_set_multicast_list, 503 .ndo_validate_addr = eth_validate_addr, 504 .ndo_set_mac_address = eth_mac_addr, 505 .ndo_change_mtu = eth_change_mtu, 506 #ifdef CONFIG_NET_POLL_CONTROLLER 507 .ndo_poll_controller = __ei_poll, 508 #endif 509 }; 510 511 static int __init mac8390_initdev(struct net_device *dev, 512 struct nubus_dev *ndev, 513 enum mac8390_type type) 514 { 515 static u32 fwrd4_offsets[16] = { 516 0, 4, 8, 12, 517 16, 20, 24, 28, 518 32, 36, 40, 44, 519 48, 52, 56, 60 520 }; 521 static u32 back4_offsets[16] = { 522 60, 56, 52, 48, 523 44, 40, 36, 32, 524 28, 24, 20, 16, 525 12, 8, 4, 0 526 }; 527 static u32 fwrd2_offsets[16] = { 528 0, 2, 4, 6, 529 8, 10, 12, 14, 530 16, 18, 20, 22, 531 24, 26, 28, 30 532 }; 533 534 int access_bitmode = 0; 535 536 /* Now fill in our stuff */ 537 dev->netdev_ops = &mac8390_netdev_ops; 538 539 /* GAR, ei_status is actually a macro even though it looks global */ 540 ei_status.name = cardname[type]; 541 ei_status.word16 = word16[type]; 542 543 /* Cabletron's TX/RX buffers are backwards */ 544 if (type == MAC8390_CABLETRON) { 545 ei_status.tx_start_page = CABLETRON_TX_START_PG; 546 ei_status.rx_start_page = CABLETRON_RX_START_PG; 547 ei_status.stop_page = CABLETRON_RX_STOP_PG; 548 ei_status.rmem_start = dev->mem_start; 549 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 550 } else { 551 ei_status.tx_start_page = WD_START_PG; 552 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 553 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 554 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 555 ei_status.rmem_end = dev->mem_end; 556 } 557 558 /* Fill in model-specific information and functions */ 559 switch (type) { 560 case MAC8390_FARALLON: 561 case MAC8390_APPLE: 562 switch (mac8390_testio(dev->mem_start)) { 563 case ACCESS_UNKNOWN: 564 pr_err("Don't know how to access card memory!\n"); 565 return -ENODEV; 566 break; 567 568 case ACCESS_16: 569 /* 16 bit card, register map is reversed */ 570 ei_status.reset_8390 = mac8390_no_reset; 571 ei_status.block_input = slow_sane_block_input; 572 ei_status.block_output = slow_sane_block_output; 573 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 574 ei_status.reg_offset = back4_offsets; 575 break; 576 577 case ACCESS_32: 578 /* 32 bit card, register map is reversed */ 579 ei_status.reset_8390 = mac8390_no_reset; 580 ei_status.block_input = sane_block_input; 581 ei_status.block_output = sane_block_output; 582 ei_status.get_8390_hdr = sane_get_8390_hdr; 583 ei_status.reg_offset = back4_offsets; 584 access_bitmode = 1; 585 break; 586 } 587 break; 588 589 case MAC8390_ASANTE: 590 /* Some Asante cards pass the 32 bit test 591 * but overwrite system memory when run at 32 bit. 592 * so we run them all at 16 bit. 593 */ 594 ei_status.reset_8390 = mac8390_no_reset; 595 ei_status.block_input = slow_sane_block_input; 596 ei_status.block_output = slow_sane_block_output; 597 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 598 ei_status.reg_offset = back4_offsets; 599 break; 600 601 case MAC8390_CABLETRON: 602 /* 16 bit card, register map is short forward */ 603 ei_status.reset_8390 = mac8390_no_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 = fwrd2_offsets; 608 break; 609 610 case MAC8390_DAYNA: 611 case MAC8390_KINETICS: 612 /* 16 bit memory, register map is forward */ 613 /* dayna and similar */ 614 ei_status.reset_8390 = mac8390_no_reset; 615 ei_status.block_input = dayna_block_input; 616 ei_status.block_output = dayna_block_output; 617 ei_status.get_8390_hdr = dayna_get_8390_hdr; 618 ei_status.reg_offset = fwrd4_offsets; 619 break; 620 621 case MAC8390_INTERLAN: 622 /* 16 bit memory, register map is forward */ 623 ei_status.reset_8390 = interlan_reset; 624 ei_status.block_input = slow_sane_block_input; 625 ei_status.block_output = slow_sane_block_output; 626 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 627 ei_status.reg_offset = fwrd4_offsets; 628 break; 629 630 default: 631 pr_err("Card type %s is unsupported, sorry\n", 632 ndev->board->name); 633 return -ENODEV; 634 } 635 636 __NS8390_init(dev, 0); 637 638 /* Good, done, now spit out some messages */ 639 pr_info("%s: %s in slot %X (type %s)\n", 640 dev->name, ndev->board->name, ndev->board->slot, 641 cardname[type]); 642 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 643 dev->dev_addr, dev->irq, 644 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 645 dev->mem_start, access_bitmode ? 32 : 16); 646 return 0; 647 } 648 649 static int mac8390_open(struct net_device *dev) 650 { 651 int err; 652 653 __ei_open(dev); 654 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 655 if (err) 656 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 657 return err; 658 } 659 660 static int mac8390_close(struct net_device *dev) 661 { 662 free_irq(dev->irq, dev); 663 __ei_close(dev); 664 return 0; 665 } 666 667 static void mac8390_no_reset(struct net_device *dev) 668 { 669 struct ei_device *ei_local = netdev_priv(dev); 670 671 ei_status.txing = 0; 672 netif_info(ei_local, hw, dev, "reset not supported\n"); 673 } 674 675 static void interlan_reset(struct net_device *dev) 676 { 677 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 678 struct ei_device *ei_local = netdev_priv(dev); 679 680 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 681 jiffies); 682 ei_status.txing = 0; 683 target[0xC0000] = 0; 684 if (netif_msg_hw(ei_local)) 685 pr_cont("reset complete\n"); 686 } 687 688 /* dayna_memcpy_fromio/dayna_memcpy_toio */ 689 /* directly from daynaport.c by Alan Cox */ 690 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 691 int count) 692 { 693 volatile unsigned char *ptr; 694 unsigned char *target = to; 695 from <<= 1; /* word, skip overhead */ 696 ptr = (unsigned char *)(dev->mem_start+from); 697 /* Leading byte? */ 698 if (from & 2) { 699 *target++ = ptr[-1]; 700 ptr += 2; 701 count--; 702 } 703 while (count >= 2) { 704 *(unsigned short *)target = *(unsigned short volatile *)ptr; 705 ptr += 4; /* skip cruft */ 706 target += 2; 707 count -= 2; 708 } 709 /* Trailing byte? */ 710 if (count) 711 *target = *ptr; 712 } 713 714 static void dayna_memcpy_tocard(struct net_device *dev, int to, 715 const void *from, int count) 716 { 717 volatile unsigned short *ptr; 718 const unsigned char *src = from; 719 to <<= 1; /* word, skip overhead */ 720 ptr = (unsigned short *)(dev->mem_start+to); 721 /* Leading byte? */ 722 if (to & 2) { /* avoid a byte write (stomps on other data) */ 723 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 724 ptr++; 725 count--; 726 } 727 while (count >= 2) { 728 *ptr++ = *(unsigned short *)src; /* Copy and */ 729 ptr++; /* skip cruft */ 730 src += 2; 731 count -= 2; 732 } 733 /* Trailing byte? */ 734 if (count) { 735 /* card doesn't like byte writes */ 736 *ptr = (*ptr & 0x00FF) | (*src << 8); 737 } 738 } 739 740 /* sane block input/output */ 741 static void sane_get_8390_hdr(struct net_device *dev, 742 struct e8390_pkt_hdr *hdr, int ring_page) 743 { 744 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 745 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4); 746 /* Fix endianness */ 747 hdr->count = swab16(hdr->count); 748 } 749 750 static void sane_block_input(struct net_device *dev, int count, 751 struct sk_buff *skb, int ring_offset) 752 { 753 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 754 unsigned long xfer_start = xfer_base + dev->mem_start; 755 756 if (xfer_start + count > ei_status.rmem_end) { 757 /* We must wrap the input move. */ 758 int semi_count = ei_status.rmem_end - xfer_start; 759 memcpy_fromio(skb->data, dev->mem_start + xfer_base, 760 semi_count); 761 count -= semi_count; 762 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start, 763 count); 764 } else { 765 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count); 766 } 767 } 768 769 static void sane_block_output(struct net_device *dev, int count, 770 const unsigned char *buf, int start_page) 771 { 772 long shmem = (start_page - WD_START_PG)<<8; 773 774 memcpy_toio(dev->mem_start + shmem, buf, count); 775 } 776 777 /* dayna block input/output */ 778 static void dayna_get_8390_hdr(struct net_device *dev, 779 struct e8390_pkt_hdr *hdr, int ring_page) 780 { 781 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 782 783 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 784 /* Fix endianness */ 785 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 786 } 787 788 static void dayna_block_input(struct net_device *dev, int count, 789 struct sk_buff *skb, int ring_offset) 790 { 791 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 792 unsigned long xfer_start = xfer_base+dev->mem_start; 793 794 /* Note the offset math is done in card memory space which is word 795 per long onto our space. */ 796 797 if (xfer_start + count > ei_status.rmem_end) { 798 /* We must wrap the input move. */ 799 int semi_count = ei_status.rmem_end - xfer_start; 800 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 801 count -= semi_count; 802 dayna_memcpy_fromcard(dev, skb->data + semi_count, 803 ei_status.rmem_start - dev->mem_start, 804 count); 805 } else { 806 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 807 } 808 } 809 810 static void dayna_block_output(struct net_device *dev, int count, 811 const unsigned char *buf, 812 int start_page) 813 { 814 long shmem = (start_page - WD_START_PG)<<8; 815 816 dayna_memcpy_tocard(dev, shmem, buf, count); 817 } 818 819 /* Cabletron block I/O */ 820 static void slow_sane_get_8390_hdr(struct net_device *dev, 821 struct e8390_pkt_hdr *hdr, 822 int ring_page) 823 { 824 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 825 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 826 /* Register endianism - fix here rather than 8390.c */ 827 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 828 } 829 830 static void slow_sane_block_input(struct net_device *dev, int count, 831 struct sk_buff *skb, int ring_offset) 832 { 833 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 834 unsigned long xfer_start = xfer_base+dev->mem_start; 835 836 if (xfer_start + count > ei_status.rmem_end) { 837 /* We must wrap the input move. */ 838 int semi_count = ei_status.rmem_end - xfer_start; 839 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 840 semi_count); 841 count -= semi_count; 842 word_memcpy_fromcard(skb->data + semi_count, 843 ei_status.rmem_start, count); 844 } else { 845 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 846 count); 847 } 848 } 849 850 static void slow_sane_block_output(struct net_device *dev, int count, 851 const unsigned char *buf, int start_page) 852 { 853 long shmem = (start_page - WD_START_PG)<<8; 854 855 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 856 } 857 858 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 859 { 860 volatile unsigned short *to = (void *)tp; 861 const unsigned short *from = fp; 862 863 count++; 864 count /= 2; 865 866 while (count--) 867 *to++ = *from++; 868 } 869 870 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 871 { 872 unsigned short *to = tp; 873 const volatile unsigned short *from = (const void *)fp; 874 875 count++; 876 count /= 2; 877 878 while (count--) 879 *to++ = *from++; 880 } 881 882 883