drivers/net/mac8390.c

   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
  18 #include <linux/version.h>
  19 #include <linux/module.h>
  20 #include <linux/kernel.h>
  21 #include <linux/types.h>
  22 #include <linux/fcntl.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/ptrace.h>
  25 #include <linux/ioport.h>
  26 #include <linux/nubus.h>
  27 #include <linux/in.h>
  28 #include <linux/slab.h>
  29 #include <linux/string.h>
  30 #include <linux/errno.h>
  31 #include <linux/init.h>
  32 #include <linux/netdevice.h>
  33 #include <linux/etherdevice.h>
  34 #include <linux/skbuff.h>
  35
  36 #include <asm/system.h>
  37 #include <asm/bitops.h>
  38 #include <asm/io.h>
  39 #include <asm/dma.h>
  40 #include <asm/hwtest.h>
  41 #include <asm/macints.h>
  42
  43 #include "8390.h"
  44
  45 #if (LINUX_VERSION_CODE < 0x02030e)
  46 #define net_device device
  47 #endif
  48
  49 #define WD_START_PG                     0x00    /* First page of TX buffer */
  50 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
  51 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
  52 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG  /* First page of TX buffer */
  53
  54 /* Unfortunately it seems we have to hardcode these for the moment */
  55 /* 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? */
  56
  57 #define DAYNA_8390_BASE         0x80000
  58 #define DAYNA_8390_MEM          0x00000
  59
  60 #define KINETICS_8390_BASE      0x80000
  61 #define KINETICS_8390_MEM       0x00000
  62
  63 #define CABLETRON_8390_BASE     0x90000
  64 #define CABLETRON_8390_MEM      0x00000
  65
  66 enum mac8390_type {
  67         MAC8390_NONE = -1,
  68         MAC8390_APPLE,
  69         MAC8390_ASANTE,
  70         MAC8390_FARALLON,  /* Apple, Asante, and Farallon are all compatible */
  71         MAC8390_CABLETRON,
  72         MAC8390_DAYNA,
  73         MAC8390_INTERLAN,
  74         MAC8390_KINETICS,
  75         MAC8390_FOCUS,
  76         MAC8390_SONICSYS,
  77         MAC8390_DAYNA2,
  78         MAC8390_DAYNA3,
  79 };
  80
  81 static const char * cardname[] = {
  82         "apple",
  83         "asante",
  84         "farallon",
  85         "cabletron",
  86         "dayna",
  87         "interlan",
  88         "kinetics",
  89         "focus",
  90         "sonic systems",
  91         "dayna2",
  92         "dayna_lc",
  93 };
  94
  95 static int word16[] = {
  96         1, /* apple */
  97         1, /* asante */
  98         1, /* farallon */
  99         1, /* cabletron */
 100         0, /* dayna */
 101         1, /* interlan */
 102         0, /* kinetics */
 103         1, /* focus (??) */
 104         1, /* sonic systems  */
 105         1, /* dayna2 */
 106         1, /* dayna-lc */
 107 };
 108
 109 /* on which cards do we use NuBus resources? */
 110 static int useresources[] = {
 111         1, /* apple */
 112         1, /* asante */
 113         1, /* farallon */
 114         0, /* cabletron */
 115         0, /* dayna */
 116         0, /* interlan */
 117         0, /* kinetics */
 118         0, /* focus (??) */
 119         1, /* sonic systems */
 120         1, /* dayna2 */
 121         1, /* dayna-lc */
 122 };
 123
 124 static char version[] __initdata =
 125         "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
 126
 127 extern int mac8390_probe(struct net_device * dev);
 128 extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
 129 extern int mac8390_memsize(unsigned long membase);
 130 extern int mac8390_memtest(struct net_device * dev);
 131 extern int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 132                            enum mac8390_type type);
 133
 134 static int mac8390_open(struct net_device * dev);
 135 static int mac8390_close(struct net_device * dev);
 136 static void mac8390_no_reset(struct net_device *dev);
 137
 138 /* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
 139 static void sane_get_8390_hdr(struct net_device *dev,
 140                               struct e8390_pkt_hdr *hdr, int ring_page);
 141 static void sane_block_input(struct net_device * dev, int count,
 142                              struct sk_buff * skb, int ring_offset);
 143 static void sane_block_output(struct net_device * dev, int count,
 144                               const unsigned char * buf, const int start_page);
 145
 146 /* dayna_memcpy to and from card */
 147 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 148                                 int from, int count);
 149 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 150                               const void *from, int count);
 151
 152 /* Dayna - Dayna/Kinetics use this */
 153 static void dayna_get_8390_hdr(struct net_device *dev,
 154                                struct e8390_pkt_hdr *hdr, int ring_page);
 155 static void dayna_block_input(struct net_device *dev, int count,
 156                               struct sk_buff *skb, int ring_offset);
 157 static void dayna_block_output(struct net_device *dev, int count,
 158                                const unsigned char *buf, int start_page);
 159
 160 #define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
 161 #define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
 162
 163 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
 164 static void slow_sane_get_8390_hdr(struct net_device *dev,
 165                                    struct e8390_pkt_hdr *hdr, int ring_page);
 166 static void slow_sane_block_input(struct net_device *dev, int count,
 167                                   struct sk_buff *skb, int ring_offset);
 168 static void slow_sane_block_output(struct net_device *dev, int count,
 169                                    const unsigned char *buf, int start_page);
 170 static void word_memcpy_tocard(void *tp, const void *fp, int count);
 171 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
 172
 173 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
 174 {
 175         if (dev->dr_sw == NUBUS_DRSW_ASANTE)
 176                 return MAC8390_ASANTE;
 177         if (dev->dr_sw == NUBUS_DRSW_FARALLON)
 178                 return MAC8390_FARALLON;
 179         if (dev->dr_sw == NUBUS_DRSW_KINETICS)
 180                 return MAC8390_KINETICS;
 181         if (dev->dr_sw == NUBUS_DRSW_DAYNA)
 182                 return MAC8390_DAYNA;
 183         if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
 184                 return MAC8390_DAYNA2;
 185         if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
 186                 return MAC8390_DAYNA3;
 187         if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
 188                 return MAC8390_CABLETRON;
 189         return MAC8390_NONE;
 190 }
 191
 192 int __init mac8390_memsize(unsigned long membase)
 193 {
 194         unsigned long flags;
 195         int i, j;
 196
 197         local_irq_save(flags);
 198         /* Check up to 32K in 4K increments */
 199         for (i = 0; i < 8; i++) {
 200                 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
 201
 202                 /* Unwriteable - we have a fully decoded card and the
 203                    RAM end located */
 204                 if (hwreg_present(m) == 0)
 205                         break;
 206
 207                 /* write a distinctive byte */
 208                 *m = 0xA5A0 | i;
 209                 /* check that we read back what we wrote */
 210                 if (*m != (0xA5A0 | i))
 211                         break;
 212
 213                 /* check for partial decode and wrap */
 214                 for (j = 0; j < i; j++) {
 215                         volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
 216                         if (*p != (0xA5A0 | j))
 217                                 break;
 218                 }
 219         }
 220         local_irq_restore(flags);
 221         /* in any case, we stopped once we tried one block too many,
 222            or once we reached 32K */
 223         return i * 0x1000;
 224 }
 225
 226 static int probed __initdata = 0;
 227
 228 int __init mac8390_probe(struct net_device * dev)
 229 {
 230         volatile unsigned short *i;
 231         int boards_found = 0;
 232         int version_disp = 0;
 233         struct nubus_dev * ndev = NULL;
 234
 235         struct nubus_dir dir;
 236         struct nubus_dirent ent;
 237         int offset;
 238
 239         enum mac8390_type cardtype;
 240
 241         if (probed)
 242                 return -ENODEV;
 243         probed++;
 244
 245         /* probably should check for Nubus instead */
 246
 247         if (!MACH_IS_MAC)
 248                 return -ENODEV;
 249
 250         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
 251
 252                 dev = NULL;
 253
 254                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
 255                         continue;
 256
 257                 dev = init_etherdev(dev, 0);
 258                 if (dev == NULL) {
 259                         printk(KERN_ERR "Unable to allocate etherdev"
 260                                         "structure!\n");
 261                         return -ENOMEM;
 262                 }
 263
 264                 if (version_disp == 0) {
 265                         version_disp = 1;
 266                         printk(version);
 267                 }
 268
 269                 dev->irq = SLOT2IRQ(ndev->board->slot);
 270                 /* This is getting to be a habit */
 271                 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
 272
 273                 /* Get some Nubus info - we will trust the card's idea
 274                    of where its memory and registers are. */
 275
 276                 if (nubus_get_func_dir(ndev, &dir) == -1) {
 277                         printk(KERN_ERR "%s: Unable to get Nubus functional"
 278                                         " directory for slot %X!\n",
 279                                dev->name, ndev->board->slot);
 280                         continue;
 281                 }
 282
 283                 /* Get the MAC address */
 284                 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
 285                         printk(KERN_INFO "%s: Couldn't get MAC address!\n",
 286                                         dev->name);
 287                         continue;
 288                 } else {
 289                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 290                         /* Some Sonic Sys cards masquerade as Farallon */
 291                         if (cardtype == MAC8390_FARALLON &&
 292                                         dev->dev_addr[0] == 0x0 &&
 293                                         dev->dev_addr[1] == 0x40 &&
 294                                         dev->dev_addr[2] == 0x10) {
 295                                 /* This is really Sonic Sys card */
 296                                 cardtype = MAC8390_SONICSYS;
 297                         }
 298                 }
 299
 300                 if (useresources[cardtype] == 1) {
 301                         nubus_rewinddir(&dir);
 302                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
 303                                 printk(KERN_ERR "%s: Memory offset resource"
 304                                                 " for slot %X not found!\n",
 305                                        dev->name, ndev->board->slot);
 306                                 continue;
 307                         }
 308                         nubus_get_rsrc_mem(&offset, &ent, 4);
 309                         dev->mem_start = dev->base_addr + offset;
 310                         /* yes, this is how the Apple driver does it */
 311                         dev->base_addr = dev->mem_start + 0x10000;
 312                         nubus_rewinddir(&dir);
 313                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
 314                                 printk(KERN_INFO "%s: Memory length resource"
 315                                                  " for slot %X not found"
 316                                                  ", probing\n",
 317                                        dev->name, ndev->board->slot);
 318                                 offset = mac8390_memsize(dev->mem_start);
 319                                 } else {
 320                                         nubus_get_rsrc_mem(&offset, &ent, 4);
 321                                 }
 322                         dev->mem_end = dev->mem_start + offset;
 323                 } else {
 324                         switch (cardtype) {
 325                                 case MAC8390_KINETICS:
 326                                 case MAC8390_DAYNA: /* it's the same */
 327                                         dev->base_addr =
 328                                                 (int)(ndev->board->slot_addr +
 329                                                 DAYNA_8390_BASE);
 330                                         dev->mem_start =
 331                                                 (int)(ndev->board->slot_addr +
 332                                                 DAYNA_8390_MEM);
 333                                         dev->mem_end =
 334                                                 dev->mem_start +
 335                                                 mac8390_memsize(dev->mem_start);
 336                                         break;
 337                                 case MAC8390_CABLETRON:
 338                                         dev->base_addr =
 339                                                 (int)(ndev->board->slot_addr +
 340                                                 CABLETRON_8390_BASE);
 341                                         dev->mem_start =
 342                                                 (int)(ndev->board->slot_addr +
 343                                                 CABLETRON_8390_MEM);
 344                                         /* The base address is unreadable if 0x00
 345                                          * has been written to the command register
 346                                          * Reset the chip by writing E8390_NODMA +
 347                                          *   E8390_PAGE0 + E8390_STOP just to be
 348                                          *   sure
 349                                          */
 350                                         i = (void *)dev->base_addr;
 351                                         *i = 0x21;
 352                                         dev->mem_end =
 353                                                 dev->mem_start +
 354                                                 mac8390_memsize(dev->mem_start);
 355                                         break;
 356
 357                                 default:
 358                                         printk(KERN_ERR "Card type %s is"
 359                                                         " unsupported, sorry\n",
 360                                                cardname[cardtype]);
 361                                         return -ENODEV;
 362                         }
 363                 }
 364
 365                 /* Do the nasty 8390 stuff */
 366                 if (mac8390_initdev(dev, ndev, cardtype))
 367                         continue;
 368                 boards_found++;
 369         }
 370
 371         /* We're outta here */
 372         if (boards_found > 0)
 373                 return 0;
 374         else
 375                 return -ENODEV;
 376 }
 377
 378 #ifdef MODULE
 379 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 380 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 381 MODUEL_LICENSE("GPL");
 382
 383 int init_module(void)
 384 {
 385         if (mac8390_probe(NULL)) {
 386                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
 387                 return -ENODEV;
 388         }
 389         lock_8390_module();
 390         return 0;
 391 }
 392
 393 void cleanup_module(void)
 394 {
 395         /* FIXME: should probably keep track of net_device structs
 396            somewhere and unregister them here? */
 397         unlock_8390_module();
 398 }
 399
 400 #endif /* MODULE */
 401
 402 int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 403                             enum mac8390_type type)
 404 {
 405         static u32 fwrd4_offsets[16]={
 406                 0,      4,      8,      12,
 407                 16,     20,     24,     28,
 408                 32,     36,     40,     44,
 409                 48,     52,     56,     60
 410         };
 411         static u32 back4_offsets[16]={
 412                 60,     56,     52,     48,
 413                 44,     40,     36,     32,
 414                 28,     24,     20,     16,
 415                 12,     8,      4,      0
 416         };
 417         static u32 fwrd2_offsets[16]={
 418                 0,      2,      4,      6,
 419                 8,     10,     12,     14,
 420                 16,    18,     20,     22,
 421                 24,    26,     28,     30
 422         };
 423
 424         int access_bitmode;
 425
 426         /* 8390 specific init for dev - allocates dev->priv */
 427         if (ethdev_init(dev)) {
 428                 printk(KERN_ERR "%s: Unable to allocate memory for dev->priv!\n", dev->name);
 429                 return -ENOMEM;
 430         }
 431
 432         /* Now fill in our stuff */
 433         dev->open = &mac8390_open;
 434         dev->stop = &mac8390_close;
 435
 436         /* GAR, ei_status is actually a macro even though it looks global */
 437         ei_status.name = cardname[type];
 438         ei_status.word16 = word16[type];
 439
 440         /* Cabletron's TX/RX buffers are backwards */
 441         if (type == MAC8390_CABLETRON) {
 442                ei_status.tx_start_page = CABLETRON_TX_START_PG;
 443                ei_status.rx_start_page = CABLETRON_RX_START_PG;
 444                ei_status.stop_page = CABLETRON_RX_STOP_PG;
 445                dev->rmem_start = dev->mem_start;
 446                dev->rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 447         } else {
 448                ei_status.tx_start_page = WD_START_PG;
 449                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 450                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 451                dev->rmem_start = dev->mem_start + TX_PAGES*256;
 452                dev->rmem_end = dev->mem_end;
 453         }
 454
 455         /* Fill in model-specific information and functions */
 456         switch(type) {
 457         case MAC8390_SONICSYS:
 458                 /* 16 bit card, register map is reversed */
 459                 ei_status.reset_8390 = &mac8390_no_reset;
 460                 ei_status.block_input = &slow_sane_block_input;
 461                 ei_status.block_output = &slow_sane_block_output;
 462                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 463                 ei_status.reg_offset = back4_offsets;
 464                 access_bitmode = 0;
 465                 break;
 466         case MAC8390_FARALLON:
 467         case MAC8390_APPLE:
 468         case MAC8390_ASANTE:
 469         case MAC8390_DAYNA2:
 470         case MAC8390_DAYNA3:
 471                 /* 32 bit card, register map is reversed */
 472                 /* sane */
 473                 ei_status.reset_8390 = &mac8390_no_reset;
 474                 ei_status.block_input = &sane_block_input;
 475                 ei_status.block_output = &sane_block_output;
 476                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
 477                 ei_status.reg_offset = back4_offsets;
 478                 access_bitmode = 1;
 479                 break;
 480         case MAC8390_CABLETRON:
 481                 /* 16 bit card, register map is short forward */
 482                 ei_status.reset_8390 = &mac8390_no_reset;
 483                 ei_status.block_input = &slow_sane_block_input;
 484                 ei_status.block_output = &slow_sane_block_output;
 485                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 486                 ei_status.reg_offset = fwrd2_offsets;
 487                 access_bitmode = 0;
 488                 break;
 489         case MAC8390_DAYNA:
 490         case MAC8390_KINETICS:
 491                 /* 16 bit memory */
 492                 /* dayna and similar */
 493                 ei_status.reset_8390 = &mac8390_no_reset;
 494                 ei_status.block_input = &dayna_block_input;
 495                 ei_status.block_output = &dayna_block_output;
 496                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 497                 ei_status.reg_offset = fwrd4_offsets;
 498                 access_bitmode = 0;
 499                 break;
 500         default:
 501                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
 502                 return -ENODEV;
 503         }
 504
 505         NS8390_init(dev, 0);
 506
 507         /* Good, done, now spit out some messages */
 508         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
 509                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
 510         printk(KERN_INFO "MAC ");
 511         {
 512                 int i;
 513                 for (i = 0; i < 6; i++) {
 514                         printk("%2.2x", dev->dev_addr[i]);
 515                         if (i < 5)
 516                                 printk(":");
 517                 }
 518         }
 519         printk(" IRQ %d, shared memory at %#lx-%#lx,  %d-bit access.\n",
 520                    dev->irq, dev->mem_start, dev->mem_end-1,
 521                    access_bitmode?32:16);
 522         return 0;
 523 }
 524
 525 static int mac8390_open(struct net_device *dev)
 526 {
 527         ei_open(dev);
 528         if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
 529                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 530                 return -EAGAIN;
 531         }
 532         MOD_INC_USE_COUNT;
 533         return 0;
 534 }
 535
 536 static int mac8390_close(struct net_device *dev)
 537 {
 538         free_irq(dev->irq, dev);
 539         ei_close(dev);
 540         MOD_DEC_USE_COUNT;
 541         return 0;
 542 }
 543
 544 static void mac8390_no_reset(struct net_device *dev)
 545 {
 546         ei_status.txing = 0;
 547         if (ei_debug > 1)
 548                 printk("reset not supported\n");
 549         return;
 550 }
 551
 552 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 553 /* directly from daynaport.c by Alan Cox */
 554 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
 555 {
 556         volatile unsigned short *ptr;
 557         unsigned short *target=to;
 558         from<<=1;       /* word, skip overhead */
 559         ptr=(unsigned short *)(dev->mem_start+from);
 560         /* Leading byte? */
 561         if (from&2) {
 562                 *((char *)target)++ = *(((char *)ptr++)-1);
 563                 count--;
 564         }
 565         while(count>=2)
 566         {
 567                 *target++=*ptr++;       /* Copy and */
 568                 ptr++;                  /* skip cruft */
 569                 count-=2;
 570         }
 571         /* Trailing byte? */
 572         if(count)
 573         {
 574                 /* Big endian */
 575                 unsigned short v=*ptr;
 576                 *((char *)target)=v>>8;
 577         }
 578 }
 579
 580 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
 581 {
 582         volatile unsigned short *ptr;
 583         const unsigned short *src=from;
 584         to<<=1; /* word, skip overhead */
 585         ptr=(unsigned short *)(dev->mem_start+to);
 586         /* Leading byte? */
 587         if (to&2) { /* avoid a byte write (stomps on other data) */
 588                 ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
 589                 ptr++;
 590                 count--;
 591         }
 592         while(count>=2)
 593         {
 594                 *ptr++=*src++;          /* Copy and */
 595                 ptr++;                  /* skip cruft */
 596                 count-=2;
 597         }
 598         /* Trailing byte? */
 599         if(count)
 600         {
 601                 /* Big endian */
 602                 unsigned short v=*src;
 603                 /* card doesn't like byte writes */
 604                 *ptr=(*ptr&0x00FF)|(v&0xFF00);
 605         }
 606 }
 607
 608 /* sane block input/output */
 609 static void sane_get_8390_hdr(struct net_device *dev,
 610                               struct e8390_pkt_hdr *hdr, int ring_page)
 611 {
 612         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 613         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
 614         /* Fix endianness */
 615         hdr->count = swab16(hdr->count);
 616 }
 617
 618 static void sane_block_input(struct net_device *dev, int count,
 619                              struct sk_buff *skb, int ring_offset)
 620 {
 621         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 622         unsigned long xfer_start = xfer_base + dev->mem_start;
 623
 624         if (xfer_start + count > dev->rmem_end) {
 625                 /* We must wrap the input move. */
 626                 int semi_count = dev->rmem_end - xfer_start;
 627                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
 628                 count -= semi_count;
 629                 memcpy_toio(skb->data + semi_count, (char *)dev->rmem_start, count);
 630         } else {
 631                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
 632         }
 633 }
 634
 635 static void sane_block_output(struct net_device *dev, int count,
 636                               const unsigned char *buf, int start_page)
 637 {
 638         long shmem = (start_page - WD_START_PG)<<8;
 639
 640         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
 641 }
 642
 643 /* dayna block input/output */
 644 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 645 {
 646         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 647
 648         dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
 649         /* Fix endianness */
 650         hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
 651 }
 652
 653 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
 654 {
 655         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 656         unsigned long xfer_start = xfer_base+dev->mem_start;
 657
 658         /* Note the offset math is done in card memory space which is word
 659            per long onto our space. */
 660
 661         if (xfer_start + count > dev->rmem_end)
 662         {
 663                 /* We must wrap the input move. */
 664                 int semi_count = dev->rmem_end - xfer_start;
 665                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 666                 count -= semi_count;
 667                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 668                         dev->rmem_start - dev->mem_start, count);
 669         }
 670         else
 671         {
 672                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 673         }
 674 }
 675
 676 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
 677                                 int start_page)
 678 {
 679         long shmem = (start_page - WD_START_PG)<<8;
 680
 681         dayna_memcpy_tocard(dev, shmem, buf, count);
 682 }
 683
 684 /* Cabletron block I/O */
 685 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 686         int ring_page)
 687 {
 688         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 689         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
 690         /* Register endianism - fix here rather than 8390.c */
 691         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 692 }
 693
 694 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
 695         int ring_offset)
 696 {
 697         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 698         unsigned long xfer_start = xfer_base+dev->mem_start;
 699
 700         if (xfer_start + count > dev->rmem_end)
 701         {
 702                 /* We must wrap the input move. */
 703                 int semi_count = dev->rmem_end - xfer_start;
 704                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 705                         xfer_base, semi_count);
 706                 count -= semi_count;
 707                 word_memcpy_fromcard(skb->data + semi_count,
 708                         (char *)dev->rmem_start, count);
 709         }
 710         else
 711         {
 712                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 713                         xfer_base, count);
 714         }
 715 }
 716
 717 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
 718         int start_page)
 719 {
 720         long shmem = (start_page - WD_START_PG)<<8;
 721
 722         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 723 }
 724
 725 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 726 {
 727         volatile unsigned short *to = tp;
 728         const unsigned short *from = fp;
 729
 730         count++;
 731         count/=2;
 732
 733         while(count--)
 734                 *to++=*from++;
 735 }
 736
 737 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 738 {
 739         unsigned short *to = tp;
 740         const volatile unsigned short *from = fp;
 741
 742         count++;
 743         count/=2;
 744
 745         while(count--)
 746                 *to++=*from++;
 747 }
 748
 749