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 #include <linux/bitops.h>
  36
  37 #include <asm/system.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 #define WD_START_PG                     0x00    /* First page of TX buffer */
  46 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
  47 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
  48 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG  /* First page of TX buffer */
  49
  50 /* Unfortunately it seems we have to hardcode these for the moment */
  51 /* 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? */
  52
  53 #define DAYNA_8390_BASE         0x80000
  54 #define DAYNA_8390_MEM          0x00000
  55
  56 #define KINETICS_8390_BASE      0x80000
  57 #define KINETICS_8390_MEM       0x00000
  58
  59 #define CABLETRON_8390_BASE     0x90000
  60 #define CABLETRON_8390_MEM      0x00000
  61
  62 enum mac8390_type {
  63         MAC8390_NONE = -1,
  64         MAC8390_APPLE,
  65         MAC8390_ASANTE,
  66         MAC8390_FARALLON,  /* Apple, Asante, and Farallon are all compatible */
  67         MAC8390_CABLETRON,
  68         MAC8390_DAYNA,
  69         MAC8390_INTERLAN,
  70         MAC8390_KINETICS,
  71         MAC8390_FOCUS,
  72         MAC8390_SONICSYS,
  73         MAC8390_DAYNA2,
  74         MAC8390_DAYNA3,
  75 };
  76
  77 static const char * cardname[] = {
  78         "apple",
  79         "asante",
  80         "farallon",
  81         "cabletron",
  82         "dayna",
  83         "interlan",
  84         "kinetics",
  85         "focus",
  86         "sonic systems",
  87         "dayna2",
  88         "dayna_lc",
  89 };
  90
  91 static int word16[] = {
  92         1, /* apple */
  93         1, /* asante */
  94         1, /* farallon */
  95         1, /* cabletron */
  96         0, /* dayna */
  97         1, /* interlan */
  98         0, /* kinetics */
  99         1, /* focus (??) */
 100         1, /* sonic systems  */
 101         1, /* dayna2 */
 102         1, /* dayna-lc */
 103 };
 104
 105 /* on which cards do we use NuBus resources? */
 106 static int useresources[] = {
 107         1, /* apple */
 108         1, /* asante */
 109         1, /* farallon */
 110         0, /* cabletron */
 111         0, /* dayna */
 112         0, /* interlan */
 113         0, /* kinetics */
 114         0, /* focus (??) */
 115         1, /* sonic systems */
 116         1, /* dayna2 */
 117         1, /* dayna-lc */
 118 };
 119
 120 static char version[] __initdata =
 121         "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
 122
 123 extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
 124 extern int mac8390_memsize(unsigned long membase);
 125 extern int mac8390_memtest(struct net_device * dev);
 126 static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 127                            enum mac8390_type type);
 128
 129 static int mac8390_open(struct net_device * dev);
 130 static int mac8390_close(struct net_device * dev);
 131 static void mac8390_no_reset(struct net_device *dev);
 132
 133 /* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
 134 static void sane_get_8390_hdr(struct net_device *dev,
 135                               struct e8390_pkt_hdr *hdr, int ring_page);
 136 static void sane_block_input(struct net_device * dev, int count,
 137                              struct sk_buff * skb, int ring_offset);
 138 static void sane_block_output(struct net_device * dev, int count,
 139                               const unsigned char * buf, const int start_page);
 140
 141 /* dayna_memcpy to and from card */
 142 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 143                                 int from, int count);
 144 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 145                               const void *from, int count);
 146
 147 /* Dayna - Dayna/Kinetics use this */
 148 static void dayna_get_8390_hdr(struct net_device *dev,
 149                                struct e8390_pkt_hdr *hdr, int ring_page);
 150 static void dayna_block_input(struct net_device *dev, int count,
 151                               struct sk_buff *skb, int ring_offset);
 152 static void dayna_block_output(struct net_device *dev, int count,
 153                                const unsigned char *buf, int start_page);
 154
 155 #define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
 156 #define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
 157
 158 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
 159 static void slow_sane_get_8390_hdr(struct net_device *dev,
 160                                    struct e8390_pkt_hdr *hdr, int ring_page);
 161 static void slow_sane_block_input(struct net_device *dev, int count,
 162                                   struct sk_buff *skb, int ring_offset);
 163 static void slow_sane_block_output(struct net_device *dev, int count,
 164                                    const unsigned char *buf, int start_page);
 165 static void word_memcpy_tocard(void *tp, const void *fp, int count);
 166 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
 167
 168 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
 169 {
 170         if (dev->dr_sw == NUBUS_DRSW_ASANTE)
 171                 return MAC8390_ASANTE;
 172         if (dev->dr_sw == NUBUS_DRSW_FARALLON)
 173                 return MAC8390_FARALLON;
 174         if (dev->dr_sw == NUBUS_DRSW_KINETICS)
 175                 return MAC8390_KINETICS;
 176         if (dev->dr_sw == NUBUS_DRSW_DAYNA)
 177                 return MAC8390_DAYNA;
 178         if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
 179                 return MAC8390_DAYNA2;
 180         if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
 181                 return MAC8390_DAYNA3;
 182         if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
 183                 return MAC8390_CABLETRON;
 184         return MAC8390_NONE;
 185 }
 186
 187 int __init mac8390_memsize(unsigned long membase)
 188 {
 189         unsigned long flags;
 190         int i, j;
 191
 192         local_irq_save(flags);
 193         /* Check up to 32K in 4K increments */
 194         for (i = 0; i < 8; i++) {
 195                 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
 196
 197                 /* Unwriteable - we have a fully decoded card and the
 198                    RAM end located */
 199                 if (hwreg_present(m) == 0)
 200                         break;
 201
 202                 /* write a distinctive byte */
 203                 *m = 0xA5A0 | i;
 204                 /* check that we read back what we wrote */
 205                 if (*m != (0xA5A0 | i))
 206                         break;
 207
 208                 /* check for partial decode and wrap */
 209                 for (j = 0; j < i; j++) {
 210                         volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
 211                         if (*p != (0xA5A0 | j))
 212                                 break;
 213                 }
 214         }
 215         local_irq_restore(flags);
 216         /* in any case, we stopped once we tried one block too many,
 217            or once we reached 32K */
 218         return i * 0x1000;
 219 }
 220
 221 struct net_device * __init mac8390_probe(int unit)
 222 {
 223         struct net_device *dev;
 224         volatile unsigned short *i;
 225         int version_disp = 0;
 226         struct nubus_dev * ndev = NULL;
 227         int err = -ENODEV;
 228
 229         struct nubus_dir dir;
 230         struct nubus_dirent ent;
 231         int offset;
 232         static unsigned int slots;
 233
 234         enum mac8390_type cardtype;
 235
 236         /* probably should check for Nubus instead */
 237
 238         if (!MACH_IS_MAC)
 239                 return ERR_PTR(-ENODEV);
 240
 241         dev = alloc_ei_netdev();
 242         if (!dev)
 243                 return ERR_PTR(-ENOMEM);
 244
 245         if (unit >= 0)
 246                 sprintf(dev->name, "eth%d", unit);
 247
 248         SET_MODULE_OWNER(dev);
 249
 250         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
 251                 /* Have we seen it already? */
 252                 if (slots & (1<<ndev->board->slot))
 253                         continue;
 254                 slots |= 1<<ndev->board->slot;
 255
 256                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
 257                         continue;
 258
 259                 if (version_disp == 0) {
 260                         version_disp = 1;
 261                         printk(version);
 262                 }
 263
 264                 dev->irq = SLOT2IRQ(ndev->board->slot);
 265                 /* This is getting to be a habit */
 266                 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
 267
 268                 /* Get some Nubus info - we will trust the card's idea
 269                    of where its memory and registers are. */
 270
 271                 if (nubus_get_func_dir(ndev, &dir) == -1) {
 272                         printk(KERN_ERR "%s: Unable to get Nubus functional"
 273                                         " directory for slot %X!\n",
 274                                dev->name, ndev->board->slot);
 275                         continue;
 276                 }
 277
 278                 /* Get the MAC address */
 279                 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
 280                         printk(KERN_INFO "%s: Couldn't get MAC address!\n",
 281                                         dev->name);
 282                         continue;
 283                 } else {
 284                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 285                         /* Some Sonic Sys cards masquerade as Farallon */
 286                         if (cardtype == MAC8390_FARALLON &&
 287                                         dev->dev_addr[0] == 0x0 &&
 288                                         dev->dev_addr[1] == 0x40 &&
 289                                         dev->dev_addr[2] == 0x10) {
 290                                 /* This is really Sonic Sys card */
 291                                 cardtype = MAC8390_SONICSYS;
 292                         }
 293                 }
 294
 295                 if (useresources[cardtype] == 1) {
 296                         nubus_rewinddir(&dir);
 297                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
 298                                 printk(KERN_ERR "%s: Memory offset resource"
 299                                                 " for slot %X not found!\n",
 300                                        dev->name, ndev->board->slot);
 301                                 continue;
 302                         }
 303                         nubus_get_rsrc_mem(&offset, &ent, 4);
 304                         dev->mem_start = dev->base_addr + offset;
 305                         /* yes, this is how the Apple driver does it */
 306                         dev->base_addr = dev->mem_start + 0x10000;
 307                         nubus_rewinddir(&dir);
 308                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
 309                                 printk(KERN_INFO "%s: Memory length resource"
 310                                                  " for slot %X not found"
 311                                                  ", probing\n",
 312                                        dev->name, ndev->board->slot);
 313                                 offset = mac8390_memsize(dev->mem_start);
 314                                 } else {
 315                                         nubus_get_rsrc_mem(&offset, &ent, 4);
 316                                 }
 317                         dev->mem_end = dev->mem_start + offset;
 318                 } else {
 319                         switch (cardtype) {
 320                                 case MAC8390_KINETICS:
 321                                 case MAC8390_DAYNA: /* it's the same */
 322                                         dev->base_addr =
 323                                                 (int)(ndev->board->slot_addr +
 324                                                 DAYNA_8390_BASE);
 325                                         dev->mem_start =
 326                                                 (int)(ndev->board->slot_addr +
 327                                                 DAYNA_8390_MEM);
 328                                         dev->mem_end =
 329                                                 dev->mem_start +
 330                                                 mac8390_memsize(dev->mem_start);
 331                                         break;
 332                                 case MAC8390_CABLETRON:
 333                                         dev->base_addr =
 334                                                 (int)(ndev->board->slot_addr +
 335                                                 CABLETRON_8390_BASE);
 336                                         dev->mem_start =
 337                                                 (int)(ndev->board->slot_addr +
 338                                                 CABLETRON_8390_MEM);
 339                                         /* The base address is unreadable if 0x00
 340                                          * has been written to the command register
 341                                          * Reset the chip by writing E8390_NODMA +
 342                                          *   E8390_PAGE0 + E8390_STOP just to be
 343                                          *   sure
 344                                          */
 345                                         i = (void *)dev->base_addr;
 346                                         *i = 0x21;
 347                                         dev->mem_end =
 348                                                 dev->mem_start +
 349                                                 mac8390_memsize(dev->mem_start);
 350                                         break;
 351
 352                                 default:
 353                                         printk(KERN_ERR "Card type %s is"
 354                                                         " unsupported, sorry\n",
 355                                                cardname[cardtype]);
 356                                         continue;
 357                         }
 358                 }
 359
 360                 /* Do the nasty 8390 stuff */
 361                 if (!mac8390_initdev(dev, ndev, cardtype))
 362                         break;
 363         }
 364
 365         if (!ndev)
 366                 goto out;
 367         err = register_netdev(dev);
 368         if (err)
 369                 goto out;
 370         return dev;
 371
 372 out:
 373         free_netdev(dev);
 374         return ERR_PTR(err);
 375 }
 376
 377 #ifdef MODULE
 378 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 379 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 380 MODULE_LICENSE("GPL");
 381
 382 /* overkill, of course */
 383 static struct net_device *dev_mac8390[15];
 384 int init_module(void)
 385 {
 386         int i;
 387         for (i = 0; i < 15; i++) {
 388                 struct net_device *dev = mac8390_probe(-1);
 389                 if (IS_ERR(dev))
 390                         break;
 391                 dev_mac890[i] = dev;
 392         }
 393         if (!i) {
 394                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
 395                 return -ENODEV;
 396         }
 397         return 0;
 398 }
 399
 400 void cleanup_module(void)
 401 {
 402         int i;
 403         for (i = 0; i < 15; i++) {
 404                 struct net_device *dev = dev_mac890[i];
 405                 if (dev) {
 406                         unregister_netdev(dev);
 407                         free_netdev(dev);
 408                 }
 409         }
 410 }
 411
 412 #endif /* MODULE */
 413
 414 static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 415                             enum mac8390_type type)
 416 {
 417         static u32 fwrd4_offsets[16]={
 418                 0,      4,      8,      12,
 419                 16,     20,     24,     28,
 420                 32,     36,     40,     44,
 421                 48,     52,     56,     60
 422         };
 423         static u32 back4_offsets[16]={
 424                 60,     56,     52,     48,
 425                 44,     40,     36,     32,
 426                 28,     24,     20,     16,
 427                 12,     8,      4,      0
 428         };
 429         static u32 fwrd2_offsets[16]={
 430                 0,      2,      4,      6,
 431                 8,     10,     12,     14,
 432                 16,    18,     20,     22,
 433                 24,    26,     28,     30
 434         };
 435
 436         int access_bitmode;
 437
 438         /* Now fill in our stuff */
 439         dev->open = &mac8390_open;
 440         dev->stop = &mac8390_close;
 441 #ifdef CONFIG_NET_POLL_CONTROLLER
 442         dev->poll_controller = ei_poll;
 443 #endif
 444
 445         /* GAR, ei_status is actually a macro even though it looks global */
 446         ei_status.name = cardname[type];
 447         ei_status.word16 = word16[type];
 448
 449         /* Cabletron's TX/RX buffers are backwards */
 450         if (type == MAC8390_CABLETRON) {
 451                ei_status.tx_start_page = CABLETRON_TX_START_PG;
 452                ei_status.rx_start_page = CABLETRON_RX_START_PG;
 453                ei_status.stop_page = CABLETRON_RX_STOP_PG;
 454                ei_status.rmem_start = dev->mem_start;
 455                ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 456         } else {
 457                ei_status.tx_start_page = WD_START_PG;
 458                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 459                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 460                ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
 461                ei_status.rmem_end = dev->mem_end;
 462         }
 463
 464         /* Fill in model-specific information and functions */
 465         switch(type) {
 466         case MAC8390_SONICSYS:
 467                 /* 16 bit card, register map is reversed */
 468                 ei_status.reset_8390 = &mac8390_no_reset;
 469                 ei_status.block_input = &slow_sane_block_input;
 470                 ei_status.block_output = &slow_sane_block_output;
 471                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 472                 ei_status.reg_offset = back4_offsets;
 473                 access_bitmode = 0;
 474                 break;
 475         case MAC8390_FARALLON:
 476         case MAC8390_APPLE:
 477         case MAC8390_ASANTE:
 478         case MAC8390_DAYNA2:
 479         case MAC8390_DAYNA3:
 480                 /* 32 bit card, register map is reversed */
 481                 /* sane */
 482                 ei_status.reset_8390 = &mac8390_no_reset;
 483                 ei_status.block_input = &sane_block_input;
 484                 ei_status.block_output = &sane_block_output;
 485                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
 486                 ei_status.reg_offset = back4_offsets;
 487                 access_bitmode = 1;
 488                 break;
 489         case MAC8390_CABLETRON:
 490                 /* 16 bit card, register map is short forward */
 491                 ei_status.reset_8390 = &mac8390_no_reset;
 492                 ei_status.block_input = &slow_sane_block_input;
 493                 ei_status.block_output = &slow_sane_block_output;
 494                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 495                 ei_status.reg_offset = fwrd2_offsets;
 496                 access_bitmode = 0;
 497                 break;
 498         case MAC8390_DAYNA:
 499         case MAC8390_KINETICS:
 500                 /* 16 bit memory */
 501                 /* dayna and similar */
 502                 ei_status.reset_8390 = &mac8390_no_reset;
 503                 ei_status.block_input = &dayna_block_input;
 504                 ei_status.block_output = &dayna_block_output;
 505                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 506                 ei_status.reg_offset = fwrd4_offsets;
 507                 access_bitmode = 0;
 508                 break;
 509         default:
 510                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
 511                 return -ENODEV;
 512         }
 513
 514         NS8390_init(dev, 0);
 515
 516         /* Good, done, now spit out some messages */
 517         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
 518                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
 519         printk(KERN_INFO "MAC ");
 520         {
 521                 int i;
 522                 for (i = 0; i < 6; i++) {
 523                         printk("%2.2x", dev->dev_addr[i]);
 524                         if (i < 5)
 525                                 printk(":");
 526                 }
 527         }
 528         printk(" IRQ %d, shared memory at %#lx-%#lx,  %d-bit access.\n",
 529                    dev->irq, dev->mem_start, dev->mem_end-1,
 530                    access_bitmode?32:16);
 531         return 0;
 532 }
 533
 534 static int mac8390_open(struct net_device *dev)
 535 {
 536         ei_open(dev);
 537         if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
 538                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 539                 return -EAGAIN;
 540         }
 541         return 0;
 542 }
 543
 544 static int mac8390_close(struct net_device *dev)
 545 {
 546         free_irq(dev->irq, dev);
 547         ei_close(dev);
 548         return 0;
 549 }
 550
 551 static void mac8390_no_reset(struct net_device *dev)
 552 {
 553         ei_status.txing = 0;
 554         if (ei_debug > 1)
 555                 printk("reset not supported\n");
 556         return;
 557 }
 558
 559 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 560 /* directly from daynaport.c by Alan Cox */
 561 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
 562 {
 563         volatile unsigned short *ptr;
 564         unsigned short *target=to;
 565         from<<=1;       /* word, skip overhead */
 566         ptr=(unsigned short *)(dev->mem_start+from);
 567         /* Leading byte? */
 568         if (from&2) {
 569                 *((char *)target)++ = *(((char *)ptr++)-1);
 570                 count--;
 571         }
 572         while(count>=2)
 573         {
 574                 *target++=*ptr++;       /* Copy and */
 575                 ptr++;                  /* skip cruft */
 576                 count-=2;
 577         }
 578         /* Trailing byte? */
 579         if(count)
 580         {
 581                 /* Big endian */
 582                 unsigned short v=*ptr;
 583                 *((char *)target)=v>>8;
 584         }
 585 }
 586
 587 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
 588 {
 589         volatile unsigned short *ptr;
 590         const unsigned short *src=from;
 591         to<<=1; /* word, skip overhead */
 592         ptr=(unsigned short *)(dev->mem_start+to);
 593         /* Leading byte? */
 594         if (to&2) { /* avoid a byte write (stomps on other data) */
 595                 ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
 596                 ptr++;
 597                 count--;
 598         }
 599         while(count>=2)
 600         {
 601                 *ptr++=*src++;          /* Copy and */
 602                 ptr++;                  /* skip cruft */
 603                 count-=2;
 604         }
 605         /* Trailing byte? */
 606         if(count)
 607         {
 608                 /* Big endian */
 609                 unsigned short v=*src;
 610                 /* card doesn't like byte writes */
 611                 *ptr=(*ptr&0x00FF)|(v&0xFF00);
 612         }
 613 }
 614
 615 /* sane block input/output */
 616 static void sane_get_8390_hdr(struct net_device *dev,
 617                               struct e8390_pkt_hdr *hdr, int ring_page)
 618 {
 619         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 620         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
 621         /* Fix endianness */
 622         hdr->count = swab16(hdr->count);
 623 }
 624
 625 static void sane_block_input(struct net_device *dev, int count,
 626                              struct sk_buff *skb, int ring_offset)
 627 {
 628         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 629         unsigned long xfer_start = xfer_base + dev->mem_start;
 630
 631         if (xfer_start + count > ei_status.rmem_end) {
 632                 /* We must wrap the input move. */
 633                 int semi_count = ei_status.rmem_end - xfer_start;
 634                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
 635                 count -= semi_count;
 636                 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
 637         } else {
 638                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
 639         }
 640 }
 641
 642 static void sane_block_output(struct net_device *dev, int count,
 643                               const unsigned char *buf, int start_page)
 644 {
 645         long shmem = (start_page - WD_START_PG)<<8;
 646
 647         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
 648 }
 649
 650 /* dayna block input/output */
 651 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 652 {
 653         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 654
 655         dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
 656         /* Fix endianness */
 657         hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
 658 }
 659
 660 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
 661 {
 662         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 663         unsigned long xfer_start = xfer_base+dev->mem_start;
 664
 665         /* Note the offset math is done in card memory space which is word
 666            per long onto our space. */
 667
 668         if (xfer_start + count > ei_status.rmem_end)
 669         {
 670                 /* We must wrap the input move. */
 671                 int semi_count = ei_status.rmem_end - xfer_start;
 672                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 673                 count -= semi_count;
 674                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 675                                       ei_status.rmem_start - dev->mem_start,
 676                                       count);
 677         }
 678         else
 679         {
 680                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 681         }
 682 }
 683
 684 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
 685                                 int start_page)
 686 {
 687         long shmem = (start_page - WD_START_PG)<<8;
 688
 689         dayna_memcpy_tocard(dev, shmem, buf, count);
 690 }
 691
 692 /* Cabletron block I/O */
 693 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 694         int ring_page)
 695 {
 696         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 697         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
 698         /* Register endianism - fix here rather than 8390.c */
 699         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 700 }
 701
 702 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
 703         int ring_offset)
 704 {
 705         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 706         unsigned long xfer_start = xfer_base+dev->mem_start;
 707
 708         if (xfer_start + count > ei_status.rmem_end)
 709         {
 710                 /* We must wrap the input move. */
 711                 int semi_count = ei_status.rmem_end - xfer_start;
 712                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 713                         xfer_base, semi_count);
 714                 count -= semi_count;
 715                 word_memcpy_fromcard(skb->data + semi_count,
 716                                      (char *)ei_status.rmem_start, count);
 717         }
 718         else
 719         {
 720                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 721                         xfer_base, count);
 722         }
 723 }
 724
 725 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
 726         int start_page)
 727 {
 728         long shmem = (start_page - WD_START_PG)<<8;
 729
 730         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 731 }
 732
 733 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 734 {
 735         volatile unsigned short *to = tp;
 736         const unsigned short *from = fp;
 737
 738         count++;
 739         count/=2;
 740
 741         while(count--)
 742                 *to++=*from++;
 743 }
 744
 745 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 746 {
 747         unsigned short *to = tp;
 748         const volatile unsigned short *from = fp;
 749
 750         count++;
 751         count/=2;
 752
 753         while(count--)
 754                 *to++=*from++;
 755 }
 756
 757