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 enum mac8390_type mac8390_ident(struct nubus_dev * dev);
 128 extern int mac8390_memsize(unsigned long membase);
 129 extern int mac8390_memtest(struct net_device * dev);
 130 static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 131                            enum mac8390_type type);
 132
 133 static int mac8390_open(struct net_device * dev);
 134 static int mac8390_close(struct net_device * dev);
 135 static void mac8390_no_reset(struct net_device *dev);
 136
 137 /* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
 138 static void sane_get_8390_hdr(struct net_device *dev,
 139                               struct e8390_pkt_hdr *hdr, int ring_page);
 140 static void sane_block_input(struct net_device * dev, int count,
 141                              struct sk_buff * skb, int ring_offset);
 142 static void sane_block_output(struct net_device * dev, int count,
 143                               const unsigned char * buf, const int start_page);
 144
 145 /* dayna_memcpy to and from card */
 146 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 147                                 int from, int count);
 148 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 149                               const void *from, int count);
 150
 151 /* Dayna - Dayna/Kinetics use this */
 152 static void dayna_get_8390_hdr(struct net_device *dev,
 153                                struct e8390_pkt_hdr *hdr, int ring_page);
 154 static void dayna_block_input(struct net_device *dev, int count,
 155                               struct sk_buff *skb, int ring_offset);
 156 static void dayna_block_output(struct net_device *dev, int count,
 157                                const unsigned char *buf, int start_page);
 158
 159 #define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
 160 #define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
 161
 162 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
 163 static void slow_sane_get_8390_hdr(struct net_device *dev,
 164                                    struct e8390_pkt_hdr *hdr, int ring_page);
 165 static void slow_sane_block_input(struct net_device *dev, int count,
 166                                   struct sk_buff *skb, int ring_offset);
 167 static void slow_sane_block_output(struct net_device *dev, int count,
 168                                    const unsigned char *buf, int start_page);
 169 static void word_memcpy_tocard(void *tp, const void *fp, int count);
 170 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
 171
 172 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
 173 {
 174         if (dev->dr_sw == NUBUS_DRSW_ASANTE)
 175                 return MAC8390_ASANTE;
 176         if (dev->dr_sw == NUBUS_DRSW_FARALLON)
 177                 return MAC8390_FARALLON;
 178         if (dev->dr_sw == NUBUS_DRSW_KINETICS)
 179                 return MAC8390_KINETICS;
 180         if (dev->dr_sw == NUBUS_DRSW_DAYNA)
 181                 return MAC8390_DAYNA;
 182         if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
 183                 return MAC8390_DAYNA2;
 184         if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
 185                 return MAC8390_DAYNA3;
 186         if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
 187                 return MAC8390_CABLETRON;
 188         return MAC8390_NONE;
 189 }
 190
 191 int __init mac8390_memsize(unsigned long membase)
 192 {
 193         unsigned long flags;
 194         int i, j;
 195
 196         local_irq_save(flags);
 197         /* Check up to 32K in 4K increments */
 198         for (i = 0; i < 8; i++) {
 199                 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
 200
 201                 /* Unwriteable - we have a fully decoded card and the
 202                    RAM end located */
 203                 if (hwreg_present(m) == 0)
 204                         break;
 205
 206                 /* write a distinctive byte */
 207                 *m = 0xA5A0 | i;
 208                 /* check that we read back what we wrote */
 209                 if (*m != (0xA5A0 | i))
 210                         break;
 211
 212                 /* check for partial decode and wrap */
 213                 for (j = 0; j < i; j++) {
 214                         volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
 215                         if (*p != (0xA5A0 | j))
 216                                 break;
 217                 }
 218         }
 219         local_irq_restore(flags);
 220         /* in any case, we stopped once we tried one block too many,
 221            or once we reached 32K */
 222         return i * 0x1000;
 223 }
 224
 225 struct net_device * __init mac8390_probe(int unit)
 226 {
 227         struct net_device *dev;
 228         volatile unsigned short *i;
 229         int version_disp = 0;
 230         struct nubus_dev * ndev = NULL;
 231         int err = -ENODEV;
 232
 233         struct nubus_dir dir;
 234         struct nubus_dirent ent;
 235         int offset;
 236         static unsigned int slots;
 237
 238         enum mac8390_type cardtype;
 239
 240         /* probably should check for Nubus instead */
 241
 242         if (!MACH_IS_MAC)
 243                 return ERR_PTR(-ENODEV);
 244
 245         dev = alloc_ei_netdev();
 246         if (!dev)
 247                 return ERR_PTR(-ENOMEM);
 248
 249         if (unit >= 0)
 250                 sprintf(dev->name, "eth%d", unit);
 251
 252         SET_MODULE_OWNER(dev);
 253
 254         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
 255                 /* Have we seen it already? */
 256                 if (slots & (1<<ndev->board->slot))
 257                         continue;
 258                 slots |= 1<<ndev->board->slot;
 259
 260                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
 261                         continue;
 262
 263                 if (version_disp == 0) {
 264                         version_disp = 1;
 265                         printk(version);
 266                 }
 267
 268                 dev->irq = SLOT2IRQ(ndev->board->slot);
 269                 /* This is getting to be a habit */
 270                 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
 271
 272                 /* Get some Nubus info - we will trust the card's idea
 273                    of where its memory and registers are. */
 274
 275                 if (nubus_get_func_dir(ndev, &dir) == -1) {
 276                         printk(KERN_ERR "%s: Unable to get Nubus functional"
 277                                         " directory for slot %X!\n",
 278                                dev->name, ndev->board->slot);
 279                         continue;
 280                 }
 281
 282                 /* Get the MAC address */
 283                 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
 284                         printk(KERN_INFO "%s: Couldn't get MAC address!\n",
 285                                         dev->name);
 286                         continue;
 287                 } else {
 288                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 289                         /* Some Sonic Sys cards masquerade as Farallon */
 290                         if (cardtype == MAC8390_FARALLON &&
 291                                         dev->dev_addr[0] == 0x0 &&
 292                                         dev->dev_addr[1] == 0x40 &&
 293                                         dev->dev_addr[2] == 0x10) {
 294                                 /* This is really Sonic Sys card */
 295                                 cardtype = MAC8390_SONICSYS;
 296                         }
 297                 }
 298
 299                 if (useresources[cardtype] == 1) {
 300                         nubus_rewinddir(&dir);
 301                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
 302                                 printk(KERN_ERR "%s: Memory offset resource"
 303                                                 " for slot %X not found!\n",
 304                                        dev->name, ndev->board->slot);
 305                                 continue;
 306                         }
 307                         nubus_get_rsrc_mem(&offset, &ent, 4);
 308                         dev->mem_start = dev->base_addr + offset;
 309                         /* yes, this is how the Apple driver does it */
 310                         dev->base_addr = dev->mem_start + 0x10000;
 311                         nubus_rewinddir(&dir);
 312                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
 313                                 printk(KERN_INFO "%s: Memory length resource"
 314                                                  " for slot %X not found"
 315                                                  ", probing\n",
 316                                        dev->name, ndev->board->slot);
 317                                 offset = mac8390_memsize(dev->mem_start);
 318                                 } else {
 319                                         nubus_get_rsrc_mem(&offset, &ent, 4);
 320                                 }
 321                         dev->mem_end = dev->mem_start + offset;
 322                 } else {
 323                         switch (cardtype) {
 324                                 case MAC8390_KINETICS:
 325                                 case MAC8390_DAYNA: /* it's the same */
 326                                         dev->base_addr =
 327                                                 (int)(ndev->board->slot_addr +
 328                                                 DAYNA_8390_BASE);
 329                                         dev->mem_start =
 330                                                 (int)(ndev->board->slot_addr +
 331                                                 DAYNA_8390_MEM);
 332                                         dev->mem_end =
 333                                                 dev->mem_start +
 334                                                 mac8390_memsize(dev->mem_start);
 335                                         break;
 336                                 case MAC8390_CABLETRON:
 337                                         dev->base_addr =
 338                                                 (int)(ndev->board->slot_addr +
 339                                                 CABLETRON_8390_BASE);
 340                                         dev->mem_start =
 341                                                 (int)(ndev->board->slot_addr +
 342                                                 CABLETRON_8390_MEM);
 343                                         /* The base address is unreadable if 0x00
 344                                          * has been written to the command register
 345                                          * Reset the chip by writing E8390_NODMA +
 346                                          *   E8390_PAGE0 + E8390_STOP just to be
 347                                          *   sure
 348                                          */
 349                                         i = (void *)dev->base_addr;
 350                                         *i = 0x21;
 351                                         dev->mem_end =
 352                                                 dev->mem_start +
 353                                                 mac8390_memsize(dev->mem_start);
 354                                         break;
 355
 356                                 default:
 357                                         printk(KERN_ERR "Card type %s is"
 358                                                         " unsupported, sorry\n",
 359                                                cardname[cardtype]);
 360                                         continue;
 361                         }
 362                 }
 363
 364                 /* Do the nasty 8390 stuff */
 365                 if (!mac8390_initdev(dev, ndev, cardtype))
 366                         break;
 367         }
 368
 369         if (!ndev)
 370                 goto out;
 371         err = register_netdev(dev);
 372         if (err)
 373                 goto out;
 374         return dev;
 375
 376 out:
 377         free_netdev(dev);
 378         return ERR_PTR(err);
 379 }
 380
 381 #ifdef MODULE
 382 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 383 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 384 MODULE_LICENSE("GPL");
 385
 386 /* overkill, of course */
 387 static struct net_device *dev_mac8390[15];
 388 int init_module(void)
 389 {
 390         int i;
 391         for (i = 0; i < 15; i++) {
 392                 struct net_device *dev = mac8390_probe(-1);
 393                 if (IS_ERR(dev))
 394                         break;
 395                 dev_mac890[i] = dev;
 396         }
 397         if (!i) {
 398                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
 399                 return -ENODEV;
 400         }
 401         return 0;
 402 }
 403
 404 void cleanup_module(void)
 405 {
 406         int i;
 407         for (i = 0; i < 15; i++) {
 408                 struct net_device *dev = dev_mac890[i];
 409                 if (dev) {
 410                         unregister_netdev(dev);
 411                         free_netdev(dev);
 412                 }
 413         }
 414 }
 415
 416 #endif /* MODULE */
 417
 418 static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 419                             enum mac8390_type type)
 420 {
 421         static u32 fwrd4_offsets[16]={
 422                 0,      4,      8,      12,
 423                 16,     20,     24,     28,
 424                 32,     36,     40,     44,
 425                 48,     52,     56,     60
 426         };
 427         static u32 back4_offsets[16]={
 428                 60,     56,     52,     48,
 429                 44,     40,     36,     32,
 430                 28,     24,     20,     16,
 431                 12,     8,      4,      0
 432         };
 433         static u32 fwrd2_offsets[16]={
 434                 0,      2,      4,      6,
 435                 8,     10,     12,     14,
 436                 16,    18,     20,     22,
 437                 24,    26,     28,     30
 438         };
 439
 440         int access_bitmode;
 441
 442         /* Now fill in our stuff */
 443         dev->open = &mac8390_open;
 444         dev->stop = &mac8390_close;
 445 #ifdef CONFIG_NET_POLL_CONTROLLER
 446         dev->poll_controller = ei_poll;
 447 #endif
 448
 449         /* GAR, ei_status is actually a macro even though it looks global */
 450         ei_status.name = cardname[type];
 451         ei_status.word16 = word16[type];
 452
 453         /* Cabletron's TX/RX buffers are backwards */
 454         if (type == MAC8390_CABLETRON) {
 455                ei_status.tx_start_page = CABLETRON_TX_START_PG;
 456                ei_status.rx_start_page = CABLETRON_RX_START_PG;
 457                ei_status.stop_page = CABLETRON_RX_STOP_PG;
 458                ei_status.rmem_start = dev->mem_start;
 459                ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 460         } else {
 461                ei_status.tx_start_page = WD_START_PG;
 462                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 463                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 464                ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
 465                ei_status.rmem_end = dev->mem_end;
 466         }
 467
 468         /* Fill in model-specific information and functions */
 469         switch(type) {
 470         case MAC8390_SONICSYS:
 471                 /* 16 bit card, register map is reversed */
 472                 ei_status.reset_8390 = &mac8390_no_reset;
 473                 ei_status.block_input = &slow_sane_block_input;
 474                 ei_status.block_output = &slow_sane_block_output;
 475                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 476                 ei_status.reg_offset = back4_offsets;
 477                 access_bitmode = 0;
 478                 break;
 479         case MAC8390_FARALLON:
 480         case MAC8390_APPLE:
 481         case MAC8390_ASANTE:
 482         case MAC8390_DAYNA2:
 483         case MAC8390_DAYNA3:
 484                 /* 32 bit card, register map is reversed */
 485                 /* sane */
 486                 ei_status.reset_8390 = &mac8390_no_reset;
 487                 ei_status.block_input = &sane_block_input;
 488                 ei_status.block_output = &sane_block_output;
 489                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
 490                 ei_status.reg_offset = back4_offsets;
 491                 access_bitmode = 1;
 492                 break;
 493         case MAC8390_CABLETRON:
 494                 /* 16 bit card, register map is short forward */
 495                 ei_status.reset_8390 = &mac8390_no_reset;
 496                 ei_status.block_input = &slow_sane_block_input;
 497                 ei_status.block_output = &slow_sane_block_output;
 498                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 499                 ei_status.reg_offset = fwrd2_offsets;
 500                 access_bitmode = 0;
 501                 break;
 502         case MAC8390_DAYNA:
 503         case MAC8390_KINETICS:
 504                 /* 16 bit memory */
 505                 /* dayna and similar */
 506                 ei_status.reset_8390 = &mac8390_no_reset;
 507                 ei_status.block_input = &dayna_block_input;
 508                 ei_status.block_output = &dayna_block_output;
 509                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 510                 ei_status.reg_offset = fwrd4_offsets;
 511                 access_bitmode = 0;
 512                 break;
 513         default:
 514                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
 515                 return -ENODEV;
 516         }
 517
 518         NS8390_init(dev, 0);
 519
 520         /* Good, done, now spit out some messages */
 521         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
 522                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
 523         printk(KERN_INFO "MAC ");
 524         {
 525                 int i;
 526                 for (i = 0; i < 6; i++) {
 527                         printk("%2.2x", dev->dev_addr[i]);
 528                         if (i < 5)
 529                                 printk(":");
 530                 }
 531         }
 532         printk(" IRQ %d, shared memory at %#lx-%#lx,  %d-bit access.\n",
 533                    dev->irq, dev->mem_start, dev->mem_end-1,
 534                    access_bitmode?32:16);
 535         return 0;
 536 }
 537
 538 static int mac8390_open(struct net_device *dev)
 539 {
 540         ei_open(dev);
 541         if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
 542                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 543                 return -EAGAIN;
 544         }
 545         return 0;
 546 }
 547
 548 static int mac8390_close(struct net_device *dev)
 549 {
 550         free_irq(dev->irq, dev);
 551         ei_close(dev);
 552         return 0;
 553 }
 554
 555 static void mac8390_no_reset(struct net_device *dev)
 556 {
 557         ei_status.txing = 0;
 558         if (ei_debug > 1)
 559                 printk("reset not supported\n");
 560         return;
 561 }
 562
 563 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 564 /* directly from daynaport.c by Alan Cox */
 565 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
 566 {
 567         volatile unsigned short *ptr;
 568         unsigned short *target=to;
 569         from<<=1;       /* word, skip overhead */
 570         ptr=(unsigned short *)(dev->mem_start+from);
 571         /* Leading byte? */
 572         if (from&2) {
 573                 *((char *)target)++ = *(((char *)ptr++)-1);
 574                 count--;
 575         }
 576         while(count>=2)
 577         {
 578                 *target++=*ptr++;       /* Copy and */
 579                 ptr++;                  /* skip cruft */
 580                 count-=2;
 581         }
 582         /* Trailing byte? */
 583         if(count)
 584         {
 585                 /* Big endian */
 586                 unsigned short v=*ptr;
 587                 *((char *)target)=v>>8;
 588         }
 589 }
 590
 591 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
 592 {
 593         volatile unsigned short *ptr;
 594         const unsigned short *src=from;
 595         to<<=1; /* word, skip overhead */
 596         ptr=(unsigned short *)(dev->mem_start+to);
 597         /* Leading byte? */
 598         if (to&2) { /* avoid a byte write (stomps on other data) */
 599                 ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
 600                 ptr++;
 601                 count--;
 602         }
 603         while(count>=2)
 604         {
 605                 *ptr++=*src++;          /* Copy and */
 606                 ptr++;                  /* skip cruft */
 607                 count-=2;
 608         }
 609         /* Trailing byte? */
 610         if(count)
 611         {
 612                 /* Big endian */
 613                 unsigned short v=*src;
 614                 /* card doesn't like byte writes */
 615                 *ptr=(*ptr&0x00FF)|(v&0xFF00);
 616         }
 617 }
 618
 619 /* sane block input/output */
 620 static void sane_get_8390_hdr(struct net_device *dev,
 621                               struct e8390_pkt_hdr *hdr, int ring_page)
 622 {
 623         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 624         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
 625         /* Fix endianness */
 626         hdr->count = swab16(hdr->count);
 627 }
 628
 629 static void sane_block_input(struct net_device *dev, int count,
 630                              struct sk_buff *skb, int ring_offset)
 631 {
 632         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 633         unsigned long xfer_start = xfer_base + dev->mem_start;
 634
 635         if (xfer_start + count > ei_status.rmem_end) {
 636                 /* We must wrap the input move. */
 637                 int semi_count = ei_status.rmem_end - xfer_start;
 638                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
 639                 count -= semi_count;
 640                 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
 641         } else {
 642                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
 643         }
 644 }
 645
 646 static void sane_block_output(struct net_device *dev, int count,
 647                               const unsigned char *buf, int start_page)
 648 {
 649         long shmem = (start_page - WD_START_PG)<<8;
 650
 651         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
 652 }
 653
 654 /* dayna block input/output */
 655 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 656 {
 657         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 658
 659         dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
 660         /* Fix endianness */
 661         hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
 662 }
 663
 664 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
 665 {
 666         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 667         unsigned long xfer_start = xfer_base+dev->mem_start;
 668
 669         /* Note the offset math is done in card memory space which is word
 670            per long onto our space. */
 671
 672         if (xfer_start + count > ei_status.rmem_end)
 673         {
 674                 /* We must wrap the input move. */
 675                 int semi_count = ei_status.rmem_end - xfer_start;
 676                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 677                 count -= semi_count;
 678                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 679                                       ei_status.rmem_start - dev->mem_start,
 680                                       count);
 681         }
 682         else
 683         {
 684                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 685         }
 686 }
 687
 688 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
 689                                 int start_page)
 690 {
 691         long shmem = (start_page - WD_START_PG)<<8;
 692
 693         dayna_memcpy_tocard(dev, shmem, buf, count);
 694 }
 695
 696 /* Cabletron block I/O */
 697 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 698         int ring_page)
 699 {
 700         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 701         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
 702         /* Register endianism - fix here rather than 8390.c */
 703         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 704 }
 705
 706 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
 707         int ring_offset)
 708 {
 709         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 710         unsigned long xfer_start = xfer_base+dev->mem_start;
 711
 712         if (xfer_start + count > ei_status.rmem_end)
 713         {
 714                 /* We must wrap the input move. */
 715                 int semi_count = ei_status.rmem_end - xfer_start;
 716                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 717                         xfer_base, semi_count);
 718                 count -= semi_count;
 719                 word_memcpy_fromcard(skb->data + semi_count,
 720                                      (char *)ei_status.rmem_start, count);
 721         }
 722         else
 723         {
 724                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 725                         xfer_base, count);
 726         }
 727 }
 728
 729 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
 730         int start_page)
 731 {
 732         long shmem = (start_page - WD_START_PG)<<8;
 733
 734         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 735 }
 736
 737 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 738 {
 739         volatile unsigned short *to = tp;
 740         const unsigned short *from = fp;
 741
 742         count++;
 743         count/=2;
 744
 745         while(count--)
 746                 *to++=*from++;
 747 }
 748
 749 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 750 {
 751         unsigned short *to = tp;
 752         const volatile unsigned short *from = fp;
 753
 754         count++;
 755         count/=2;
 756
 757         while(count--)
 758                 *to++=*from++;
 759 }
 760
 761