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 44static 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 77enum 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 88static const char *cardname[] = { 89 "apple", 90 "asante", 91 "farallon", 92 "cabletron", 93 "dayna", 94 "interlan", 95 "kinetics", 96}; 97 98static 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? */ 109static 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 119enum mac8390_access { 120 ACCESS_UNKNOWN = 0, 121 ACCESS_32, 122 ACCESS_16, 123}; 124 125extern int mac8390_memtest(struct net_device *dev); 126static int mac8390_initdev(struct net_device *dev, struct nubus_dev *ndev, 127 enum mac8390_type type); 128 129static int mac8390_open(struct net_device *dev); 130static int mac8390_close(struct net_device *dev); 131static void mac8390_no_reset(struct net_device *dev); 132static void interlan_reset(struct net_device *dev); 133 134/* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ 135static void sane_get_8390_hdr(struct net_device *dev, 136 struct e8390_pkt_hdr *hdr, int ring_page); 137static void sane_block_input(struct net_device *dev, int count, 138 struct sk_buff *skb, int ring_offset); 139static 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 */ 143static void dayna_memcpy_fromcard(struct net_device *dev, void *to, 144 int from, int count); 145static void dayna_memcpy_tocard(struct net_device *dev, int to, 146 const void *from, int count); 147 148/* Dayna - Dayna/Kinetics use this */ 149static void dayna_get_8390_hdr(struct net_device *dev, 150 struct e8390_pkt_hdr *hdr, int ring_page); 151static void dayna_block_input(struct net_device *dev, int count, 152 struct sk_buff *skb, int ring_offset); 153static 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 */ 162static void slow_sane_get_8390_hdr(struct net_device *dev, 163 struct e8390_pkt_hdr *hdr, int ring_page); 164static void slow_sane_block_input(struct net_device *dev, int count, 165 struct sk_buff *skb, int ring_offset); 166static void slow_sane_block_output(struct net_device *dev, int count, 167 const unsigned char *buf, int start_page); 168static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); 169static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); 170static u32 mac8390_msg_enable; 171 172static 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 238static 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 256static 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 292static 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 394struct 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 447out: 448 free_netdev(dev); 449 return ERR_PTR(err); 450} 451 452#ifdef MODULE 453MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); 454MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); 455MODULE_LICENSE("GPL"); 456 457/* overkill, of course */ 458static struct net_device *dev_mac8390[15]; 459int init_module(void) 460{ 461 int i; 462 for (i = 0; i < 15; i++) { 463 struct net_device *dev = mac8390_probe(-1); 464 if (IS_ERR(dev)) 465 break; 466 dev_mac890[i] = dev; 467 } 468 if (!i) { 469 pr_notice("No useable cards found, driver NOT installed.\n"); 470 return -ENODEV; 471 } 472 return 0; 473} 474 475void cleanup_module(void) 476{ 477 int i; 478 for (i = 0; i < 15; i++) { 479 struct net_device *dev = dev_mac890[i]; 480 if (dev) { 481 unregister_netdev(dev); 482 free_netdev(dev); 483 } 484 } 485} 486 487#endif /* MODULE */ 488 489static const struct net_device_ops mac8390_netdev_ops = { 490 .ndo_open = mac8390_open, 491 .ndo_stop = mac8390_close, 492 .ndo_start_xmit = __ei_start_xmit, 493 .ndo_tx_timeout = __ei_tx_timeout, 494 .ndo_get_stats = __ei_get_stats, 495 .ndo_set_rx_mode = __ei_set_multicast_list, 496 .ndo_validate_addr = eth_validate_addr, 497 .ndo_set_mac_address = eth_mac_addr, 498 .ndo_change_mtu = eth_change_mtu, 499#ifdef CONFIG_NET_POLL_CONTROLLER 500 .ndo_poll_controller = __ei_poll, 501#endif 502}; 503 504static int __init mac8390_initdev(struct net_device *dev, 505 struct nubus_dev *ndev, 506 enum mac8390_type type) 507{ 508 static u32 fwrd4_offsets[16] = { 509 0, 4, 8, 12, 510 16, 20, 24, 28, 511 32, 36, 40, 44, 512 48, 52, 56, 60 513 }; 514 static u32 back4_offsets[16] = { 515 60, 56, 52, 48, 516 44, 40, 36, 32, 517 28, 24, 20, 16, 518 12, 8, 4, 0 519 }; 520 static u32 fwrd2_offsets[16] = { 521 0, 2, 4, 6, 522 8, 10, 12, 14, 523 16, 18, 20, 22, 524 24, 26, 28, 30 525 }; 526 527 int access_bitmode = 0; 528 529 /* Now fill in our stuff */ 530 dev->netdev_ops = &mac8390_netdev_ops; 531 532 /* GAR, ei_status is actually a macro even though it looks global */ 533 ei_status.name = cardname[type]; 534 ei_status.word16 = word16[type]; 535 536 /* Cabletron's TX/RX buffers are backwards */ 537 if (type == MAC8390_CABLETRON) { 538 ei_status.tx_start_page = CABLETRON_TX_START_PG; 539 ei_status.rx_start_page = CABLETRON_RX_START_PG; 540 ei_status.stop_page = CABLETRON_RX_STOP_PG; 541 ei_status.rmem_start = dev->mem_start; 542 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; 543 } else { 544 ei_status.tx_start_page = WD_START_PG; 545 ei_status.rx_start_page = WD_START_PG + TX_PAGES; 546 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; 547 ei_status.rmem_start = dev->mem_start + TX_PAGES*256; 548 ei_status.rmem_end = dev->mem_end; 549 } 550 551 /* Fill in model-specific information and functions */ 552 switch (type) { 553 case MAC8390_FARALLON: 554 case MAC8390_APPLE: 555 switch (mac8390_testio(dev->mem_start)) { 556 case ACCESS_UNKNOWN: 557 pr_err("Don't know how to access card memory!\n"); 558 return -ENODEV; 559 560 case ACCESS_16: 561 /* 16 bit card, register map is reversed */ 562 ei_status.reset_8390 = mac8390_no_reset; 563 ei_status.block_input = slow_sane_block_input; 564 ei_status.block_output = slow_sane_block_output; 565 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 566 ei_status.reg_offset = back4_offsets; 567 break; 568 569 case ACCESS_32: 570 /* 32 bit card, register map is reversed */ 571 ei_status.reset_8390 = mac8390_no_reset; 572 ei_status.block_input = sane_block_input; 573 ei_status.block_output = sane_block_output; 574 ei_status.get_8390_hdr = sane_get_8390_hdr; 575 ei_status.reg_offset = back4_offsets; 576 access_bitmode = 1; 577 break; 578 } 579 break; 580 581 case MAC8390_ASANTE: 582 /* Some Asante cards pass the 32 bit test 583 * but overwrite system memory when run at 32 bit. 584 * so we run them all at 16 bit. 585 */ 586 ei_status.reset_8390 = mac8390_no_reset; 587 ei_status.block_input = slow_sane_block_input; 588 ei_status.block_output = slow_sane_block_output; 589 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 590 ei_status.reg_offset = back4_offsets; 591 break; 592 593 case MAC8390_CABLETRON: 594 /* 16 bit card, register map is short forward */ 595 ei_status.reset_8390 = mac8390_no_reset; 596 ei_status.block_input = slow_sane_block_input; 597 ei_status.block_output = slow_sane_block_output; 598 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 599 ei_status.reg_offset = fwrd2_offsets; 600 break; 601 602 case MAC8390_DAYNA: 603 case MAC8390_KINETICS: 604 /* 16 bit memory, register map is forward */ 605 /* dayna and similar */ 606 ei_status.reset_8390 = mac8390_no_reset; 607 ei_status.block_input = dayna_block_input; 608 ei_status.block_output = dayna_block_output; 609 ei_status.get_8390_hdr = dayna_get_8390_hdr; 610 ei_status.reg_offset = fwrd4_offsets; 611 break; 612 613 case MAC8390_INTERLAN: 614 /* 16 bit memory, register map is forward */ 615 ei_status.reset_8390 = interlan_reset; 616 ei_status.block_input = slow_sane_block_input; 617 ei_status.block_output = slow_sane_block_output; 618 ei_status.get_8390_hdr = slow_sane_get_8390_hdr; 619 ei_status.reg_offset = fwrd4_offsets; 620 break; 621 622 default: 623 pr_err("Card type %s is unsupported, sorry\n", 624 ndev->board->name); 625 return -ENODEV; 626 } 627 628 __NS8390_init(dev, 0); 629 630 /* Good, done, now spit out some messages */ 631 pr_info("%s: %s in slot %X (type %s)\n", 632 dev->name, ndev->board->name, ndev->board->slot, 633 cardname[type]); 634 pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n", 635 dev->dev_addr, dev->irq, 636 (unsigned int)(dev->mem_end - dev->mem_start) >> 10, 637 dev->mem_start, access_bitmode ? 32 : 16); 638 return 0; 639} 640 641static int mac8390_open(struct net_device *dev) 642{ 643 int err; 644 645 __ei_open(dev); 646 err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev); 647 if (err) 648 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq); 649 return err; 650} 651 652static int mac8390_close(struct net_device *dev) 653{ 654 free_irq(dev->irq, dev); 655 __ei_close(dev); 656 return 0; 657} 658 659static void mac8390_no_reset(struct net_device *dev) 660{ 661 struct ei_device *ei_local = netdev_priv(dev); 662 663 ei_status.txing = 0; 664 netif_info(ei_local, hw, dev, "reset not supported\n"); 665} 666 667static void interlan_reset(struct net_device *dev) 668{ 669 unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq)); 670 struct ei_device *ei_local = netdev_priv(dev); 671 672 netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...", 673 jiffies); 674 ei_status.txing = 0; 675 target[0xC0000] = 0; 676 if (netif_msg_hw(ei_local)) 677 pr_cont("reset complete\n"); 678} 679 680/* dayna_memcpy_fromio/dayna_memcpy_toio */ 681/* directly from daynaport.c by Alan Cox */ 682static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, 683 int count) 684{ 685 volatile unsigned char *ptr; 686 unsigned char *target = to; 687 from <<= 1; /* word, skip overhead */ 688 ptr = (unsigned char *)(dev->mem_start+from); 689 /* Leading byte? */ 690 if (from & 2) { 691 *target++ = ptr[-1]; 692 ptr += 2; 693 count--; 694 } 695 while (count >= 2) { 696 *(unsigned short *)target = *(unsigned short volatile *)ptr; 697 ptr += 4; /* skip cruft */ 698 target += 2; 699 count -= 2; 700 } 701 /* Trailing byte? */ 702 if (count) 703 *target = *ptr; 704} 705 706static void dayna_memcpy_tocard(struct net_device *dev, int to, 707 const void *from, int count) 708{ 709 volatile unsigned short *ptr; 710 const unsigned char *src = from; 711 to <<= 1; /* word, skip overhead */ 712 ptr = (unsigned short *)(dev->mem_start+to); 713 /* Leading byte? */ 714 if (to & 2) { /* avoid a byte write (stomps on other data) */ 715 ptr[-1] = (ptr[-1]&0xFF00)|*src++; 716 ptr++; 717 count--; 718 } 719 while (count >= 2) { 720 *ptr++ = *(unsigned short *)src; /* Copy and */ 721 ptr++; /* skip cruft */ 722 src += 2; 723 count -= 2; 724 } 725 /* Trailing byte? */ 726 if (count) { 727 /* card doesn't like byte writes */ 728 *ptr = (*ptr & 0x00FF) | (*src << 8); 729 } 730} 731 732/* sane block input/output */ 733static void sane_get_8390_hdr(struct net_device *dev, 734 struct e8390_pkt_hdr *hdr, int ring_page) 735{ 736 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 737 memcpy_fromio(hdr, dev->mem_start + hdr_start, 4); 738 /* Fix endianness */ 739 hdr->count = swab16(hdr->count); 740} 741 742static void sane_block_input(struct net_device *dev, int count, 743 struct sk_buff *skb, int ring_offset) 744{ 745 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 746 unsigned long xfer_start = xfer_base + dev->mem_start; 747 748 if (xfer_start + count > ei_status.rmem_end) { 749 /* We must wrap the input move. */ 750 int semi_count = ei_status.rmem_end - xfer_start; 751 memcpy_fromio(skb->data, dev->mem_start + xfer_base, 752 semi_count); 753 count -= semi_count; 754 memcpy_fromio(skb->data + semi_count, ei_status.rmem_start, 755 count); 756 } else { 757 memcpy_fromio(skb->data, dev->mem_start + xfer_base, count); 758 } 759} 760 761static void sane_block_output(struct net_device *dev, int count, 762 const unsigned char *buf, int start_page) 763{ 764 long shmem = (start_page - WD_START_PG)<<8; 765 766 memcpy_toio(dev->mem_start + shmem, buf, count); 767} 768 769/* dayna block input/output */ 770static void dayna_get_8390_hdr(struct net_device *dev, 771 struct e8390_pkt_hdr *hdr, int ring_page) 772{ 773 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 774 775 dayna_memcpy_fromcard(dev, hdr, hdr_start, 4); 776 /* Fix endianness */ 777 hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); 778} 779 780static void dayna_block_input(struct net_device *dev, int count, 781 struct sk_buff *skb, int ring_offset) 782{ 783 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 784 unsigned long xfer_start = xfer_base+dev->mem_start; 785 786 /* Note the offset math is done in card memory space which is word 787 per long onto our space. */ 788 789 if (xfer_start + count > ei_status.rmem_end) { 790 /* We must wrap the input move. */ 791 int semi_count = ei_status.rmem_end - xfer_start; 792 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); 793 count -= semi_count; 794 dayna_memcpy_fromcard(dev, skb->data + semi_count, 795 ei_status.rmem_start - dev->mem_start, 796 count); 797 } else { 798 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); 799 } 800} 801 802static void dayna_block_output(struct net_device *dev, int count, 803 const unsigned char *buf, 804 int start_page) 805{ 806 long shmem = (start_page - WD_START_PG)<<8; 807 808 dayna_memcpy_tocard(dev, shmem, buf, count); 809} 810 811/* Cabletron block I/O */ 812static void slow_sane_get_8390_hdr(struct net_device *dev, 813 struct e8390_pkt_hdr *hdr, 814 int ring_page) 815{ 816 unsigned long hdr_start = (ring_page - WD_START_PG)<<8; 817 word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4); 818 /* Register endianism - fix here rather than 8390.c */ 819 hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); 820} 821 822static void slow_sane_block_input(struct net_device *dev, int count, 823 struct sk_buff *skb, int ring_offset) 824{ 825 unsigned long xfer_base = ring_offset - (WD_START_PG<<8); 826 unsigned long xfer_start = xfer_base+dev->mem_start; 827 828 if (xfer_start + count > ei_status.rmem_end) { 829 /* We must wrap the input move. */ 830 int semi_count = ei_status.rmem_end - xfer_start; 831 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 832 semi_count); 833 count -= semi_count; 834 word_memcpy_fromcard(skb->data + semi_count, 835 ei_status.rmem_start, count); 836 } else { 837 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base, 838 count); 839 } 840} 841 842static void slow_sane_block_output(struct net_device *dev, int count, 843 const unsigned char *buf, int start_page) 844{ 845 long shmem = (start_page - WD_START_PG)<<8; 846 847 word_memcpy_tocard(dev->mem_start + shmem, buf, count); 848} 849 850static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) 851{ 852 volatile unsigned short *to = (void *)tp; 853 const unsigned short *from = fp; 854 855 count++; 856 count /= 2; 857 858 while (count--) 859 *to++ = *from++; 860} 861 862static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) 863{ 864 unsigned short *to = tp; 865 const volatile unsigned short *from = (const void *)fp; 866 867 count++; 868 count /= 2; 869 870 while (count--) 871 *to++ = *from++; 872} 873 874 875