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#include <linux/module.h> 21#include <linux/kernel.h> 22#include <linux/types.h> 23#include <linux/fcntl.h> 24#include <linux/interrupt.h> 25#include <linux/ptrace.h> 26#include <linux/ioport.h> 27#include <linux/nubus.h> 28#include <linux/in.h> 29#include <linux/slab.h> 30#include <linux/string.h> 31#include <linux/errno.h> 32#include <linux/init.h> 33#include <linux/netdevice.h> 34#include <linux/etherdevice.h> 35#include <linux/skbuff.h> 36#include <linux/bitops.h> 37 38#include <asm/system.h> 39#include <asm/io.h> 40#include <asm/dma.h> 41#include <asm/hwtest.h> 42#include <asm/macints.h> 43 44static char version[] = 45 "mac8390.c: 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 /* First page of TX buffer */ 59 60/* Unfortunately it seems we have to hardcode these for the moment */ 61/* Shouldn't the card know about this? Does anyone know where to read it off the card? Do we trust the data provided by the card? */ 62 63#define DAYNA_8390_BASE 0x80000 64#define DAYNA_8390_MEM 0x00000 65 66#define CABLETRON_8390_BASE 0x90000 67#define CABLETRON_8390_MEM 0x00000 68 69#define INTERLAN_8390_BASE 0xE0000 70#define INTERLAN_8390_MEM 0xD0000 71 72enum mac8390_type { 73 MAC8390_NONE = -1, 74 MAC8390_APPLE, 75 MAC8390_ASANTE, 76 MAC8390_FARALLON, 77 MAC8390_CABLETRON, 78 MAC8390_DAYNA, 79 MAC8390_INTERLAN, 80 MAC8390_KINETICS, 81}; 82 83static const char * cardname[] = { 84 "apple", 85 "asante", 86 "farallon", 87 "cabletron", 88 "dayna", 89 "interlan", 90 "kinetics", 91}; 92 93static int word16[] = { 94 1, /* apple */ 95 1, /* asante */ 96 1, /* farallon */ 97 1, /* cabletron */ 98 0, /* dayna */ 99 1, /* interlan */ 100 0, /* kinetics */ 101}; 102 103/* on which cards do we use NuBus resources? */ 104static int useresources[] = { 105 1, /* apple */ 106 1, /* asante */ 107 1, /* farallon */ 108 0, /* cabletron */ 109 0, /* dayna */ 110 0, /* interlan */ 111 0, /* kinetics */ 112}; 113 114enum mac8390_access { 115 ACCESS_UNKNOWN = 0, 116 ACCESS_32, 117 ACCESS_16, 118}; 119 120extern enum mac8390_type mac8390_ident(struct nubus_dev * dev); 121extern int mac8390_memsize(unsigned long membase); 122extern int mac8390_memtest(struct net_device * dev); 123static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev, 124 enum mac8390_type type); 125 126static int mac8390_open(struct net_device * dev); 127static int mac8390_close(struct net_device * dev); 128static void mac8390_no_reset(struct net_device *dev); 129static void interlan_reset(struct net_device *dev); 130 131/* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ 132static void sane_get_8390_hdr(struct net_device *dev, 133 struct e8390_pkt_hdr *hdr, int ring_page); 134static void sane_block_input(struct net_device * dev, int count, 135 struct sk_buff * skb, int ring_offset); 136static void sane_block_output(struct net_device * dev, int count, 137 const unsigned char * buf, const int start_page); 138 139/* dayna_memcpy to and from card */ 140static void dayna_memcpy_fromcard(struct net_device *dev, void *to, 141 int from, int count); 142static void dayna_memcpy_tocard(struct net_device *dev, int to, 143 const void *from, int count); 144 145/* Dayna - Dayna/Kinetics use this */ 146static void dayna_get_8390_hdr(struct net_device *dev, 147 struct e8390_pkt_hdr *hdr, int ring_page); 148static void dayna_block_input(struct net_device *dev, int count, 149 struct sk_buff *skb, int ring_offset); 150static void dayna_block_output(struct net_device *dev, int count, 151 const unsigned char *buf, int start_page); 152 153#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) 154#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) 155 156/* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ 157static void slow_sane_get_8390_hdr(struct net_device *dev, 158 struct e8390_pkt_hdr *hdr, int ring_page); 159static void slow_sane_block_input(struct net_device *dev, int count, 160 struct sk_buff *skb, int ring_offset); 161static void slow_sane_block_output(struct net_device *dev, int count, 162 const unsigned char *buf, int start_page); 163static void word_memcpy_tocard(void *tp, const void *fp, int count); 164static void word_memcpy_fromcard(void *tp, const void *fp, int count); 165 166enum mac8390_type __init mac8390_ident(struct nubus_dev * dev) 167{ 168 switch (dev->dr_sw) { 169 case NUBUS_DRSW_3COM: 170 switch (dev->dr_hw) { 171 case NUBUS_DRHW_APPLE_SONIC_NB: 172 case NUBUS_DRHW_APPLE_SONIC_LC: 173 case NUBUS_DRHW_SONNET: 174 return MAC8390_NONE; 175 break; 176 default: 177 return MAC8390_APPLE; 178 break; 179 } 180 break; 181 182 case NUBUS_DRSW_APPLE: 183 switch (dev->dr_hw) { 184 case NUBUS_DRHW_ASANTE_LC: 185 return MAC8390_NONE; 186 break; 187 case NUBUS_DRHW_CABLETRON: 188 return MAC8390_CABLETRON; 189 break; 190 default: 191 return MAC8390_APPLE; 192 break; 193 } 194 break; 195 196 case NUBUS_DRSW_ASANTE: 197 return MAC8390_ASANTE; 198 break; 199 200 case NUBUS_DRSW_TECHWORKS: 201 case NUBUS_DRSW_DAYNA2: 202 case NUBUS_DRSW_DAYNA_LC: 203 if (dev->dr_hw == NUBUS_DRHW_CABLETRON) 204 return MAC8390_CABLETRON; 205 else 206 return MAC8390_APPLE; 207 break; 208 209 case NUBUS_DRSW_FARALLON: 210 return MAC8390_FARALLON; 211 break; 212 213 case NUBUS_DRSW_KINETICS: 214 switch (dev->dr_hw) { 215 case NUBUS_DRHW_INTERLAN: 216 return MAC8390_INTERLAN; 217 break; 218 default: 219 return MAC8390_KINETICS; 220 break; 221 } 222 break; 223 224 case NUBUS_DRSW_DAYNA: 225 // These correspond to Dayna Sonic cards 226 // which use the macsonic driver 227 if (dev->dr_hw == NUBUS_DRHW_SMC9194 || 228 dev->dr_hw == NUBUS_DRHW_INTERLAN ) 229 return MAC8390_NONE; 230 else 231 return MAC8390_DAYNA; 232 break; 233 } 234 return MAC8390_NONE; 235} 236 237enum mac8390_access __init mac8390_testio(volatile unsigned long membase) 238{ 239 unsigned long outdata = 0xA5A0B5B0; 240 unsigned long indata = 0x00000000; 241 /* Try writing 32 bits */ 242 memcpy((char *)membase, (char *)&outdata, 4); 243 /* Now compare them */ 244 if (memcmp((char *)&outdata, (char *)membase, 4) == 0) 245 return ACCESS_32; 246 /* Write 16 bit output */ 247 word_memcpy_tocard((char *)membase, (char *)&outdata, 4); 248 /* Now read it back */ 249 word_memcpy_fromcard((char *)&indata, (char *)membase, 4); 250 if (outdata == indata) 251 return ACCESS_16; 252 return ACCESS_UNKNOWN; 253} 254 255int __init mac8390_memsize(unsigned long membase) 256{ 257 unsigned long flags; 258 int i, j; 259 260 local_irq_save(flags); 261 /* Check up to 32K in 4K increments */ 262 for (i = 0; i < 8; i++) { 263 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000)); 264 265 /* Unwriteable - we have a fully decoded card and the 266 RAM end located */ 267 if (hwreg_present(m) == 0) 268 break; 269 270 /* write a distinctive byte */ 271 *m = 0xA5A0 | i; 272 /* check that we read back what we wrote */ 273 if (*m != (0xA5A0 | i)) 274 break; 275 276 /* check for partial decode and wrap */ 277 for (j = 0; j < i; j++) { 278 volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000)); 279 if (*p != (0xA5A0 | j)) 280 break; 281 } 282 } 283 local_irq_restore(flags); 284 /* in any case, we stopped once we tried one block too many, 285 or once we reached 32K */ 286 return i * 0x1000; 287} 288 289struct net_device * __init mac8390_probe(int unit) 290{ 291 struct net_device *dev; 292 volatile unsigned short *i; 293 int version_disp = 0; 294 struct nubus_dev * ndev = NULL; 295 int err = -ENODEV; 296 297 struct nubus_dir dir; 298 struct nubus_dirent ent; 299 int offset; 300 static unsigned int slots; 301 302 enum mac8390_type cardtype; 303 304 /* probably should check for Nubus instead */ 305 306 if (!MACH_IS_MAC) 307 return ERR_PTR(-ENODEV); 308 309 dev = ____alloc_ei_netdev(0); 310 if (!dev) 311 return ERR_PTR(-ENOMEM); 312 313 if (unit >= 0) 314 sprintf(dev->name, "eth%d", unit); 315 316 SET_MODULE_OWNER(dev); 317 318 while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) { 319 /* Have we seen it already? */ 320 if (slots & (1<<ndev->board->slot)) 321 continue; 322 slots |= 1<<ndev->board->slot; 323 324 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE) 325 continue; 326 327 if (version_disp == 0) { 328 version_disp = 1; 329 printk(version); 330 } 331 332 dev->irq = SLOT2IRQ(ndev->board->slot); 333 /* This is getting to be a habit */ 334 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20); 335 336 /* Get some Nubus info - we will trust the card's idea 337 of where its memory and registers are. */ 338 339 if (nubus_get_func_dir(ndev, &dir) == -1) { 340 printk(KERN_ERR "%s: Unable to get Nubus functional" 341 " directory for slot %X!\n", 342 dev->name, ndev->board->slot); 343 continue; 344 } 345 346 /* Get the MAC address */ 347 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) { 348 printk(KERN_INFO "%s: Couldn't get MAC address!\n", 349 dev->name); 350 continue; 351 } else { 352 nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); 353 } 354 355 if (useresources[cardtype] == 1) { 356 nubus_rewinddir(&dir); 357 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) { 358 printk(KERN_ERR "%s: Memory offset resource" 359 " for slot %X not found!\n", 360 dev->name, ndev->board->slot); 361 continue; 362 } 363 nubus_get_rsrc_mem(&offset, &ent, 4); 364 dev->mem_start = dev->base_addr + offset; 365 /* yes, this is how the Apple driver does it */ 366 dev->base_addr = dev->mem_start + 0x10000; 367 nubus_rewinddir(&dir); 368 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) { 369 printk(KERN_INFO "%s: Memory length resource" 370 " for slot %X not found" 371 ", probing\n", 372 dev->name, ndev->board->slot); 373 offset = mac8390_memsize(dev->mem_start); 374 } else { 375 nubus_get_rsrc_mem(&offset, &ent, 4); 376 } 377 dev->mem_end = dev->mem_start + offset; 378 } else { 379 switch (cardtype) { 380 case MAC8390_KINETICS: 381 case MAC8390_DAYNA: /* it's the same */ 382 dev->base_addr = 383 (int)(ndev->board->slot_addr + 384 DAYNA_8390_BASE); 385 dev->mem_start = 386 (int)(ndev->board->slot_addr + 387 DAYNA_8390_MEM); 388 dev->mem_end = 389 dev->mem_start + 390 mac8390_memsize(dev->mem_start); 391 break; 392 case MAC8390_INTERLAN: 393 dev->base_addr = 394 (int)(ndev->board->slot_addr + 395 INTERLAN_8390_BASE); 396 dev->mem_start = 397 (int)(ndev->board->slot_addr + 398 INTERLAN_8390_MEM); 399 dev->mem_end = 400 dev->mem_start + 401 mac8390_memsize(dev->mem_start); 402 break; 403 case MAC8390_CABLETRON: 404 dev->base_addr = 405 (int)(ndev->board->slot_addr + 406 CABLETRON_8390_BASE); 407 dev->mem_start = 408 (int)(ndev->board->slot_addr + 409 CABLETRON_8390_MEM); 410 /* The base address is unreadable if 0x00 411 * has been written to the command register 412 * Reset the chip by writing E8390_NODMA + 413 * E8390_PAGE0 + E8390_STOP just to be 414 * sure 415 */ 416 i = (void *)dev->base_addr; 417 *i = 0x21; 418 dev->mem_end = 419 dev->mem_start + 420 mac8390_memsize(dev->mem_start); 421 break; 422 423 default: 424 printk(KERN_ERR "Card type %s is" 425 " unsupported, sorry\n", 426 ndev->board->name); 427 continue; 428 } 429 } 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 err = register_netdev(dev); 439 if (err) 440 goto out; 441 return dev; 442 443out: 444 free_netdev(dev); 445 return ERR_PTR(err); 446} 447 448#ifdef MODULE 449MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 450MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 451MODULE_LICENSE("GPL"); 452 453/* overkill, of course */ 454static struct net_device *dev_mac8390[15]; 455int init_module(void) 456{ 457 int i; 458 for (i = 0; i < 15; i++) { 459 struct net_device *dev = mac8390_probe(-1); 460 if (IS_ERR(dev)) 461 break; 462 dev_mac890[i] = dev; 463 } 464 if (!i) { 465 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n"); 466 return -ENODEV; 467 } 468 return 0; 469} 470 471void cleanup_module(void) 472{ 473 int i; 474 for (i = 0; i < 15; i++) { 475 struct net_device *dev = dev_mac890[i]; 476 if (dev) { 477 unregister_netdev(dev); 478 free_netdev(dev); 479 } 480 } 481} 482 483#endif /* MODULE */ 484 485static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev, 486 enum mac8390_type type) 487{ 488 static u32 fwrd4_offsets[16]={ 489 0, 4, 8, 12, 490 16, 20, 24, 28, 491 32, 36, 40, 44, 492 48, 52, 56, 60 493 }; 494 static u32 back4_offsets[16]={ 495 60, 56, 52, 48, 496 44, 40, 36, 32, 497 28, 24, 20, 16, 498 12, 8, 4, 0 499 }; 500 static u32 fwrd2_offsets[16]={ 501 0, 2, 4, 6, 502 8, 10, 12, 14, 503 16, 18, 20, 22, 504 24, 26, 28, 30 505 }; 506 507 int access_bitmode = 0; 508 509 /* Now fill in our stuff */ 510 dev->open = &mac8390_open; 511 dev->stop = &mac8390_close; 512#ifdef CONFIG_NET_POLL_CONTROLLER 513 dev->poll_controller = __ei_poll; 514#endif 515 516 /* GAR, ei_status is actually a macro even though it looks global */ 517 ei_status.name = cardname[type]; 518 ei_status.word16 = word16[type]; 519 520 /* Cabletron's TX/RX buffers are backwards */ 521 if (type == MAC8390_CABLETRON) { 522 ei_status.tx_start_page = CABLETRON_TX_START_PG; 523 ei_status.rx_start_page = CABLETRON_RX_START_PG; 524 ei_status.stop_page = CABLETRON_RX_STOP_PG; 525 ei_status.rmem_start = dev->mem_start; 526 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 527 } else { 528 ei_status.tx_start_page = WD_START_PG; 529 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 530 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 531 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 532 ei_status.rmem_end = dev->mem_end; 533 } 534 535 /* Fill in model-specific information and functions */ 536 switch(type) { 537 case MAC8390_FARALLON: 538 case MAC8390_APPLE: 539 switch(mac8390_testio(dev->mem_start)) { 540 case ACCESS_UNKNOWN: 541 printk("Don't know how to access card memory!\n"); 542 return -ENODEV; 543 break; 544 545 case ACCESS_16: 546 /* 16 bit card, register map is reversed */ 547 ei_status.reset_8390 = &mac8390_no_reset; 548 ei_status.block_input = &slow_sane_block_input; 549 ei_status.block_output = &slow_sane_block_output; 550 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr; 551 ei_status.reg_offset = back4_offsets; 552 break; 553 554 case ACCESS_32: 555 /* 32 bit card, register map is reversed */ 556 ei_status.reset_8390 = &mac8390_no_reset; 557 ei_status.block_input = &sane_block_input; 558 ei_status.block_output = &sane_block_output; 559 ei_status.get_8390_hdr = &sane_get_8390_hdr; 560 ei_status.reg_offset = back4_offsets; 561 access_bitmode = 1; 562 break; 563 } 564 break; 565 566 case MAC8390_ASANTE: 567 /* Some Asante cards pass the 32 bit test 568 * but overwrite system memory when run at 32 bit. 569 * so we run them all at 16 bit. 570 */ 571 ei_status.reset_8390 = &mac8390_no_reset; 572 ei_status.block_input = &slow_sane_block_input; 573 ei_status.block_output = &slow_sane_block_output; 574 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr; 575 ei_status.reg_offset = back4_offsets; 576 break; 577 578 case MAC8390_CABLETRON: 579 /* 16 bit card, register map is short forward */ 580 ei_status.reset_8390 = &mac8390_no_reset; 581 ei_status.block_input = &slow_sane_block_input; 582 ei_status.block_output = &slow_sane_block_output; 583 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr; 584 ei_status.reg_offset = fwrd2_offsets; 585 break; 586 587 case MAC8390_DAYNA: 588 case MAC8390_KINETICS: 589 /* 16 bit memory, register map is forward */ 590 /* dayna and similar */ 591 ei_status.reset_8390 = &mac8390_no_reset; 592 ei_status.block_input = &dayna_block_input; 593 ei_status.block_output = &dayna_block_output; 594 ei_status.get_8390_hdr = &dayna_get_8390_hdr; 595 ei_status.reg_offset = fwrd4_offsets; 596 break; 597 598 case MAC8390_INTERLAN: 599 /* 16 bit memory, register map is forward */ 600 ei_status.reset_8390 = &interlan_reset; 601 ei_status.block_input = &slow_sane_block_input; 602 ei_status.block_output = &slow_sane_block_output; 603 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr; 604 ei_status.reg_offset = fwrd4_offsets; 605 break; 606 607 default: 608 printk(KERN_ERR "Card type %s is unsupported, sorry\n", ndev->board->name); 609 return -ENODEV; 610 } 611 612 __NS8390_init(dev, 0); 613 614 /* Good, done, now spit out some messages */ 615 printk(KERN_INFO "%s: %s in slot %X (type %s)\n", 616 dev->name, ndev->board->name, ndev->board->slot, cardname[type]); 617 printk(KERN_INFO "MAC "); 618 { 619 int i; 620 for (i = 0; i < 6; i++) { 621 printk("%2.2x", dev->dev_addr[i]); 622 if (i < 5) 623 printk(":"); 624 } 625 } 626 printk(" IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 627 dev->irq, (int)((dev->mem_end - dev->mem_start)/0x1000) * 4, 628 dev->mem_start, access_bitmode?32:16); 629 return 0; 630} 631 632static int mac8390_open(struct net_device *dev) 633{ 634 __ei_open(dev); 635 if (request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev)) { 636 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq); 637 return -EAGAIN; 638 } 639 return 0; 640} 641 642static int mac8390_close(struct net_device *dev) 643{ 644 free_irq(dev->irq, dev); 645 __ei_close(dev); 646 return 0; 647} 648 649static void mac8390_no_reset(struct net_device *dev) 650{ 651 ei_status.txing = 0; 652 if (ei_debug > 1) 653 printk("reset not supported\n"); 654 return; 655} 656 657static void interlan_reset(struct net_device *dev) 658{ 659 unsigned char *target=nubus_slot_addr(IRQ2SLOT(dev->irq)); 660 if (ei_debug > 1) 661 printk("Need to reset the NS8390 t=%lu...", jiffies); 662 ei_status.txing = 0; 663 target[0xC0000] = 0; 664 if (ei_debug > 1) 665 printk("reset complete\n"); 666 return; 667} 668 669/* dayna_memcpy_fromio/dayna_memcpy_toio */ 670/* directly from daynaport.c by Alan Cox */ 671static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 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 { 685 *(unsigned short *)target = *(unsigned short volatile *)ptr; 686 ptr += 4; /* skip cruft */ 687 target += 2; 688 count-=2; 689 } 690 /* Trailing byte? */ 691 if(count) 692 *target = *ptr; 693} 694 695static void dayna_memcpy_tocard(struct net_device *dev, int to, 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 { 709 *ptr++=*(unsigned short *)src; /* Copy and */ 710 ptr++; /* skip cruft */ 711 src += 2; 712 count-=2; 713 } 714 /* Trailing byte? */ 715 if(count) 716 { 717 /* card doesn't like byte writes */ 718 *ptr=(*ptr&0x00FF)|(*src << 8); 719 } 720} 721 722/* sane block input/output */ 723static void sane_get_8390_hdr(struct net_device *dev, 724 struct e8390_pkt_hdr *hdr, int ring_page) 725{ 726 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 727 memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4); 728 /* Fix endianness */ 729 hdr->count = swab16(hdr->count); 730} 731 732static void sane_block_input(struct net_device *dev, int count, 733 struct sk_buff *skb, int ring_offset) 734{ 735 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 736 unsigned long xfer_start = xfer_base + dev->mem_start; 737 738 if (xfer_start + count > ei_status.rmem_end) { 739 /* We must wrap the input move. */ 740 int semi_count = ei_status.rmem_end - xfer_start; 741 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count); 742 count -= semi_count; 743 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count); 744 } else { 745 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count); 746 } 747} 748 749static 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((char *)dev->mem_start + shmem, buf, count); 755} 756 757/* dayna block input/output */ 758static void dayna_get_8390_hdr(struct net_device *dev, 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, (void *)hdr, hdr_start, 4); 763 /* Fix endianness */ 764 hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8); 765} 766 767static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) 768{ 769 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 770 unsigned long xfer_start = xfer_base+dev->mem_start; 771 772 /* Note the offset math is done in card memory space which is word 773 per long onto our space. */ 774 775 if (xfer_start + count > ei_status.rmem_end) 776 { 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 } 785 else 786 { 787 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 788 } 789} 790 791static void dayna_block_output(struct net_device *dev, int count, 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 */ 800static void slow_sane_get_8390_hdr(struct net_device *dev, 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((void *)hdr, (char *)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 809static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb, 810 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 { 817 /* We must wrap the input move. */ 818 int semi_count = ei_status.rmem_end - xfer_start; 819 word_memcpy_fromcard(skb->data, (char *)dev->mem_start + 820 xfer_base, semi_count); 821 count -= semi_count; 822 word_memcpy_fromcard(skb->data + semi_count, 823 (char *)ei_status.rmem_start, count); 824 } 825 else 826 { 827 word_memcpy_fromcard(skb->data, (char *)dev->mem_start + 828 xfer_base, count); 829 } 830} 831 832static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf, 833 int start_page) 834{ 835 long shmem = (start_page - WD_START_PG)<<8; 836 837 word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count); 838} 839 840static void word_memcpy_tocard(void *tp, const void *fp, int count) 841{ 842 volatile unsigned short *to = tp; 843 const unsigned short *from = fp; 844 845 count++; 846 count/=2; 847 848 while(count--) 849 *to++=*from++; 850} 851 852static void word_memcpy_fromcard(void *tp, const void *fp, int count) 853{ 854 unsigned short *to = tp; 855 const volatile unsigned short *from = fp; 856 857 count++; 858 count/=2; 859 860 while(count--) 861 *to++=*from++; 862} 863