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/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/types.h>
  21 #include <linux/fcntl.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/ptrace.h>
  24 #include <linux/ioport.h>
  25 #include <linux/nubus.h>
  26 #include <linux/in.h>
  27 #include <linux/slab.h>
  28 #include <linux/string.h>
  29 #include <linux/errno.h>
  30 #include <linux/init.h>
  31 #include <linux/netdevice.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/bitops.h>
  35
  36 #include <asm/system.h>
  37 #include <asm/io.h>
  38 #include <asm/dma.h>
  39 #include <asm/hwtest.h>
  40 #include <asm/macints.h>
  41
  42 static char version[] =
  43         "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
  44
  45 #define EI_SHIFT(x)     (ei_local->reg_offset[x])
  46 #define ei_inb(port)   in_8(port)
  47 #define ei_outb(val,port)  out_8(port,val)
  48 #define ei_inb_p(port)   in_8(port)
  49 #define ei_outb_p(val,port)  out_8(port,val)
  50
  51 #include "lib8390.c"
  52
  53 #define WD_START_PG                     0x00    /* First page of TX buffer */
  54 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
  55 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
  56 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG  /* First page of TX buffer */
  57
  58 /* Unfortunately it seems we have to hardcode these for the moment */
  59 /* 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? */
  60
  61 #define DAYNA_8390_BASE         0x80000
  62 #define DAYNA_8390_MEM          0x00000
  63
  64 #define KINETICS_8390_BASE      0x80000
  65 #define KINETICS_8390_MEM       0x00000
  66
  67 #define CABLETRON_8390_BASE     0x90000
  68 #define CABLETRON_8390_MEM      0x00000
  69
  70 enum mac8390_type {
  71         MAC8390_NONE = -1,
  72         MAC8390_APPLE,
  73         MAC8390_ASANTE,
  74         MAC8390_FARALLON,  /* Apple, Asante, and Farallon are all compatible */
  75         MAC8390_CABLETRON,
  76         MAC8390_DAYNA,
  77         MAC8390_INTERLAN,
  78         MAC8390_KINETICS,
  79         MAC8390_FOCUS,
  80         MAC8390_SONICSYS,
  81         MAC8390_DAYNA2,
  82         MAC8390_DAYNA3,
  83 };
  84
  85 static const char * cardname[] = {
  86         "apple",
  87         "asante",
  88         "farallon",
  89         "cabletron",
  90         "dayna",
  91         "interlan",
  92         "kinetics",
  93         "focus",
  94         "sonic systems",
  95         "dayna2",
  96         "dayna_lc",
  97 };
  98
  99 static int word16[] = {
 100         1, /* apple */
 101         1, /* asante */
 102         1, /* farallon */
 103         1, /* cabletron */
 104         0, /* dayna */
 105         1, /* interlan */
 106         0, /* kinetics */
 107         1, /* focus (??) */
 108         1, /* sonic systems  */
 109         1, /* dayna2 */
 110         1, /* dayna-lc */
 111 };
 112
 113 /* on which cards do we use NuBus resources? */
 114 static int useresources[] = {
 115         1, /* apple */
 116         1, /* asante */
 117         1, /* farallon */
 118         0, /* cabletron */
 119         0, /* dayna */
 120         0, /* interlan */
 121         0, /* kinetics */
 122         0, /* focus (??) */
 123         1, /* sonic systems */
 124         1, /* dayna2 */
 125         1, /* dayna-lc */
 126 };
 127
 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 static 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 struct net_device * __init mac8390_probe(int unit)
 227 {
 228         struct net_device *dev;
 229         volatile unsigned short *i;
 230         int version_disp = 0;
 231         struct nubus_dev * ndev = NULL;
 232         int err = -ENODEV;
 233
 234         struct nubus_dir dir;
 235         struct nubus_dirent ent;
 236         int offset;
 237         static unsigned int slots;
 238
 239         enum mac8390_type cardtype;
 240
 241         /* probably should check for Nubus instead */
 242
 243         if (!MACH_IS_MAC)
 244                 return ERR_PTR(-ENODEV);
 245
 246         dev = ____alloc_ei_netdev(0);
 247         if (!dev)
 248                 return ERR_PTR(-ENOMEM);
 249
 250         if (unit >= 0)
 251                 sprintf(dev->name, "eth%d", unit);
 252
 253         SET_MODULE_OWNER(dev);
 254
 255         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
 256                 /* Have we seen it already? */
 257                 if (slots & (1<<ndev->board->slot))
 258                         continue;
 259                 slots |= 1<<ndev->board->slot;
 260
 261                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
 262                         continue;
 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                                         continue;
 362                         }
 363                 }
 364
 365                 /* Do the nasty 8390 stuff */
 366                 if (!mac8390_initdev(dev, ndev, cardtype))
 367                         break;
 368         }
 369
 370         if (!ndev)
 371                 goto out;
 372         err = register_netdev(dev);
 373         if (err)
 374                 goto out;
 375         return dev;
 376
 377 out:
 378         free_netdev(dev);
 379         return ERR_PTR(err);
 380 }
 381
 382 #ifdef MODULE
 383 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 384 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 385 MODULE_LICENSE("GPL");
 386
 387 /* overkill, of course */
 388 static struct net_device *dev_mac8390[15];
 389 int init_module(void)
 390 {
 391         int i;
 392         for (i = 0; i < 15; i++) {
 393                 struct net_device *dev = mac8390_probe(-1);
 394                 if (IS_ERR(dev))
 395                         break;
 396                 dev_mac890[i] = dev;
 397         }
 398         if (!i) {
 399                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
 400                 return -ENODEV;
 401         }
 402         return 0;
 403 }
 404
 405 void cleanup_module(void)
 406 {
 407         int i;
 408         for (i = 0; i < 15; i++) {
 409                 struct net_device *dev = dev_mac890[i];
 410                 if (dev) {
 411                         unregister_netdev(dev);
 412                         free_netdev(dev);
 413                 }
 414         }
 415 }
 416
 417 #endif /* MODULE */
 418
 419 static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 420                             enum mac8390_type type)
 421 {
 422         static u32 fwrd4_offsets[16]={
 423                 0,      4,      8,      12,
 424                 16,     20,     24,     28,
 425                 32,     36,     40,     44,
 426                 48,     52,     56,     60
 427         };
 428         static u32 back4_offsets[16]={
 429                 60,     56,     52,     48,
 430                 44,     40,     36,     32,
 431                 28,     24,     20,     16,
 432                 12,     8,      4,      0
 433         };
 434         static u32 fwrd2_offsets[16]={
 435                 0,      2,      4,      6,
 436                 8,     10,     12,     14,
 437                 16,    18,     20,     22,
 438                 24,    26,     28,     30
 439         };
 440
 441         int access_bitmode;
 442
 443         /* Now fill in our stuff */
 444         dev->open = &mac8390_open;
 445         dev->stop = &mac8390_close;
 446 #ifdef CONFIG_NET_POLL_CONTROLLER
 447         dev->poll_controller = __ei_poll;
 448 #endif
 449
 450         /* GAR, ei_status is actually a macro even though it looks global */
 451         ei_status.name = cardname[type];
 452         ei_status.word16 = word16[type];
 453
 454         /* Cabletron's TX/RX buffers are backwards */
 455         if (type == MAC8390_CABLETRON) {
 456                ei_status.tx_start_page = CABLETRON_TX_START_PG;
 457                ei_status.rx_start_page = CABLETRON_RX_START_PG;
 458                ei_status.stop_page = CABLETRON_RX_STOP_PG;
 459                ei_status.rmem_start = dev->mem_start;
 460                ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 461         } else {
 462                ei_status.tx_start_page = WD_START_PG;
 463                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 464                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 465                ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
 466                ei_status.rmem_end = dev->mem_end;
 467         }
 468
 469         /* Fill in model-specific information and functions */
 470         switch(type) {
 471         case MAC8390_SONICSYS:
 472                 /* 16 bit card, register map is reversed */
 473                 ei_status.reset_8390 = &mac8390_no_reset;
 474                 ei_status.block_input = &slow_sane_block_input;
 475                 ei_status.block_output = &slow_sane_block_output;
 476                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 477                 ei_status.reg_offset = back4_offsets;
 478                 access_bitmode = 0;
 479                 break;
 480         case MAC8390_FARALLON:
 481         case MAC8390_APPLE:
 482         case MAC8390_ASANTE:
 483         case MAC8390_DAYNA2:
 484         case MAC8390_DAYNA3:
 485                 /* 32 bit card, register map is reversed */
 486                 /* sane */
 487                 ei_status.reset_8390 = &mac8390_no_reset;
 488                 ei_status.block_input = &sane_block_input;
 489                 ei_status.block_output = &sane_block_output;
 490                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
 491                 ei_status.reg_offset = back4_offsets;
 492                 access_bitmode = 1;
 493                 break;
 494         case MAC8390_CABLETRON:
 495                 /* 16 bit card, register map is short forward */
 496                 ei_status.reset_8390 = &mac8390_no_reset;
 497                 ei_status.block_input = &slow_sane_block_input;
 498                 ei_status.block_output = &slow_sane_block_output;
 499                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 500                 ei_status.reg_offset = fwrd2_offsets;
 501                 access_bitmode = 0;
 502                 break;
 503         case MAC8390_DAYNA:
 504         case MAC8390_KINETICS:
 505                 /* 16 bit memory */
 506                 /* dayna and similar */
 507                 ei_status.reset_8390 = &mac8390_no_reset;
 508                 ei_status.block_input = &dayna_block_input;
 509                 ei_status.block_output = &dayna_block_output;
 510                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 511                 ei_status.reg_offset = fwrd4_offsets;
 512                 access_bitmode = 0;
 513                 break;
 514         default:
 515                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
 516                 return -ENODEV;
 517         }
 518
 519         __NS8390_init(dev, 0);
 520
 521         /* Good, done, now spit out some messages */
 522         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
 523                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
 524         printk(KERN_INFO "MAC ");
 525         {
 526                 int i;
 527                 for (i = 0; i < 6; i++) {
 528                         printk("%2.2x", dev->dev_addr[i]);
 529                         if (i < 5)
 530                                 printk(":");
 531                 }
 532         }
 533         printk(" IRQ %d, shared memory at %#lx-%#lx,  %d-bit access.\n",
 534                    dev->irq, dev->mem_start, dev->mem_end-1,
 535                    access_bitmode?32:16);
 536         return 0;
 537 }
 538
 539 static int mac8390_open(struct net_device *dev)
 540 {
 541         __ei_open(dev);
 542         if (request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev)) {
 543                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 544                 return -EAGAIN;
 545         }
 546         return 0;
 547 }
 548
 549 static int mac8390_close(struct net_device *dev)
 550 {
 551         free_irq(dev->irq, dev);
 552         __ei_close(dev);
 553         return 0;
 554 }
 555
 556 static void mac8390_no_reset(struct net_device *dev)
 557 {
 558         ei_status.txing = 0;
 559         if (ei_debug > 1)
 560                 printk("reset not supported\n");
 561         return;
 562 }
 563
 564 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 565 /* directly from daynaport.c by Alan Cox */
 566 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
 567 {
 568         volatile unsigned char *ptr;
 569         unsigned char *target=to;
 570         from<<=1;       /* word, skip overhead */
 571         ptr=(unsigned char *)(dev->mem_start+from);
 572         /* Leading byte? */
 573         if (from&2) {
 574                 *target++ = ptr[-1];
 575                 ptr += 2;
 576                 count--;
 577         }
 578         while(count>=2)
 579         {
 580                 *(unsigned short *)target = *(unsigned short volatile *)ptr;
 581                 ptr += 4;                       /* skip cruft */
 582                 target += 2;
 583                 count-=2;
 584         }
 585         /* Trailing byte? */
 586         if(count)
 587                 *target = *ptr;
 588 }
 589
 590 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
 591 {
 592         volatile unsigned short *ptr;
 593         const unsigned char *src=from;
 594         to<<=1; /* word, skip overhead */
 595         ptr=(unsigned short *)(dev->mem_start+to);
 596         /* Leading byte? */
 597         if (to&2) { /* avoid a byte write (stomps on other data) */
 598                 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
 599                 ptr++;
 600                 count--;
 601         }
 602         while(count>=2)
 603         {
 604                 *ptr++=*(unsigned short *)src;          /* Copy and */
 605                 ptr++;                  /* skip cruft */
 606                 src += 2;
 607                 count-=2;
 608         }
 609         /* Trailing byte? */
 610         if(count)
 611         {
 612                 /* card doesn't like byte writes */
 613                 *ptr=(*ptr&0x00FF)|(*src << 8);
 614         }
 615 }
 616
 617 /* sane block input/output */
 618 static void sane_get_8390_hdr(struct net_device *dev,
 619                               struct e8390_pkt_hdr *hdr, int ring_page)
 620 {
 621         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 622         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
 623         /* Fix endianness */
 624         hdr->count = swab16(hdr->count);
 625 }
 626
 627 static void sane_block_input(struct net_device *dev, int count,
 628                              struct sk_buff *skb, int ring_offset)
 629 {
 630         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 631         unsigned long xfer_start = xfer_base + dev->mem_start;
 632
 633         if (xfer_start + count > ei_status.rmem_end) {
 634                 /* We must wrap the input move. */
 635                 int semi_count = ei_status.rmem_end - xfer_start;
 636                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
 637                 count -= semi_count;
 638                 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
 639         } else {
 640                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
 641         }
 642 }
 643
 644 static void sane_block_output(struct net_device *dev, int count,
 645                               const unsigned char *buf, int start_page)
 646 {
 647         long shmem = (start_page - WD_START_PG)<<8;
 648
 649         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
 650 }
 651
 652 /* dayna block input/output */
 653 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 654 {
 655         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 656
 657         dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
 658         /* Fix endianness */
 659         hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
 660 }
 661
 662 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
 663 {
 664         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 665         unsigned long xfer_start = xfer_base+dev->mem_start;
 666
 667         /* Note the offset math is done in card memory space which is word
 668            per long onto our space. */
 669
 670         if (xfer_start + count > ei_status.rmem_end)
 671         {
 672                 /* We must wrap the input move. */
 673                 int semi_count = ei_status.rmem_end - xfer_start;
 674                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 675                 count -= semi_count;
 676                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 677                                       ei_status.rmem_start - dev->mem_start,
 678                                       count);
 679         }
 680         else
 681         {
 682                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 683         }
 684 }
 685
 686 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
 687                                 int start_page)
 688 {
 689         long shmem = (start_page - WD_START_PG)<<8;
 690
 691         dayna_memcpy_tocard(dev, shmem, buf, count);
 692 }
 693
 694 /* Cabletron block I/O */
 695 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 696         int ring_page)
 697 {
 698         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 699         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
 700         /* Register endianism - fix here rather than 8390.c */
 701         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 702 }
 703
 704 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
 705         int ring_offset)
 706 {
 707         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 708         unsigned long xfer_start = xfer_base+dev->mem_start;
 709
 710         if (xfer_start + count > ei_status.rmem_end)
 711         {
 712                 /* We must wrap the input move. */
 713                 int semi_count = ei_status.rmem_end - xfer_start;
 714                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 715                         xfer_base, semi_count);
 716                 count -= semi_count;
 717                 word_memcpy_fromcard(skb->data + semi_count,
 718                                      (char *)ei_status.rmem_start, count);
 719         }
 720         else
 721         {
 722                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 723                         xfer_base, count);
 724         }
 725 }
 726
 727 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
 728         int start_page)
 729 {
 730         long shmem = (start_page - WD_START_PG)<<8;
 731
 732         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 733 }
 734
 735 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 736 {
 737         volatile unsigned short *to = tp;
 738         const unsigned short *from = fp;
 739
 740         count++;
 741         count/=2;
 742
 743         while(count--)
 744                 *to++=*from++;
 745 }
 746
 747 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 748 {
 749         unsigned short *to = tp;
 750         const volatile unsigned short *from = fp;
 751
 752         count++;
 753         count/=2;
 754
 755         while(count--)
 756                 *to++=*from++;
 757 }
 758
 759