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 #include "8390.h"
  43
  44 #define WD_START_PG                     0x00    /* First page of TX buffer */
  45 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
  46 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
  47 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG  /* First page of TX buffer */
  48
  49 /* Unfortunately it seems we have to hardcode these for the moment */
  50 /* 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? */
  51
  52 #define DAYNA_8390_BASE         0x80000
  53 #define DAYNA_8390_MEM          0x00000
  54
  55 #define KINETICS_8390_BASE      0x80000
  56 #define KINETICS_8390_MEM       0x00000
  57
  58 #define CABLETRON_8390_BASE     0x90000
  59 #define CABLETRON_8390_MEM      0x00000
  60
  61 enum mac8390_type {
  62         MAC8390_NONE = -1,
  63         MAC8390_APPLE,
  64         MAC8390_ASANTE,
  65         MAC8390_FARALLON,  /* Apple, Asante, and Farallon are all compatible */
  66         MAC8390_CABLETRON,
  67         MAC8390_DAYNA,
  68         MAC8390_INTERLAN,
  69         MAC8390_KINETICS,
  70         MAC8390_FOCUS,
  71         MAC8390_SONICSYS,
  72         MAC8390_DAYNA2,
  73         MAC8390_DAYNA3,
  74 };
  75
  76 static const char * cardname[] = {
  77         "apple",
  78         "asante",
  79         "farallon",
  80         "cabletron",
  81         "dayna",
  82         "interlan",
  83         "kinetics",
  84         "focus",
  85         "sonic systems",
  86         "dayna2",
  87         "dayna_lc",
  88 };
  89
  90 static int word16[] = {
  91         1, /* apple */
  92         1, /* asante */
  93         1, /* farallon */
  94         1, /* cabletron */
  95         0, /* dayna */
  96         1, /* interlan */
  97         0, /* kinetics */
  98         1, /* focus (??) */
  99         1, /* sonic systems  */
 100         1, /* dayna2 */
 101         1, /* dayna-lc */
 102 };
 103
 104 /* on which cards do we use NuBus resources? */
 105 static int useresources[] = {
 106         1, /* apple */
 107         1, /* asante */
 108         1, /* farallon */
 109         0, /* cabletron */
 110         0, /* dayna */
 111         0, /* interlan */
 112         0, /* kinetics */
 113         0, /* focus (??) */
 114         1, /* sonic systems */
 115         1, /* dayna2 */
 116         1, /* dayna-lc */
 117 };
 118
 119 static char version[] __initdata =
 120         "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
 121
 122 extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
 123 extern int mac8390_memsize(unsigned long membase);
 124 extern int mac8390_memtest(struct net_device * dev);
 125 static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 126                            enum mac8390_type type);
 127
 128 static int mac8390_open(struct net_device * dev);
 129 static int mac8390_close(struct net_device * dev);
 130 static void mac8390_no_reset(struct net_device *dev);
 131
 132 /* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
 133 static void sane_get_8390_hdr(struct net_device *dev,
 134                               struct e8390_pkt_hdr *hdr, int ring_page);
 135 static void sane_block_input(struct net_device * dev, int count,
 136                              struct sk_buff * skb, int ring_offset);
 137 static void sane_block_output(struct net_device * dev, int count,
 138                               const unsigned char * buf, const int start_page);
 139
 140 /* dayna_memcpy to and from card */
 141 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 142                                 int from, int count);
 143 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 144                               const void *from, int count);
 145
 146 /* Dayna - Dayna/Kinetics use this */
 147 static void dayna_get_8390_hdr(struct net_device *dev,
 148                                struct e8390_pkt_hdr *hdr, int ring_page);
 149 static void dayna_block_input(struct net_device *dev, int count,
 150                               struct sk_buff *skb, int ring_offset);
 151 static void dayna_block_output(struct net_device *dev, int count,
 152                                const unsigned char *buf, int start_page);
 153
 154 #define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
 155 #define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
 156
 157 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
 158 static void slow_sane_get_8390_hdr(struct net_device *dev,
 159                                    struct e8390_pkt_hdr *hdr, int ring_page);
 160 static void slow_sane_block_input(struct net_device *dev, int count,
 161                                   struct sk_buff *skb, int ring_offset);
 162 static void slow_sane_block_output(struct net_device *dev, int count,
 163                                    const unsigned char *buf, int start_page);
 164 static void word_memcpy_tocard(void *tp, const void *fp, int count);
 165 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
 166
 167 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
 168 {
 169         if (dev->dr_sw == NUBUS_DRSW_ASANTE)
 170                 return MAC8390_ASANTE;
 171         if (dev->dr_sw == NUBUS_DRSW_FARALLON)
 172                 return MAC8390_FARALLON;
 173         if (dev->dr_sw == NUBUS_DRSW_KINETICS)
 174                 return MAC8390_KINETICS;
 175         if (dev->dr_sw == NUBUS_DRSW_DAYNA)
 176                 return MAC8390_DAYNA;
 177         if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
 178                 return MAC8390_DAYNA2;
 179         if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
 180                 return MAC8390_DAYNA3;
 181         if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
 182                 return MAC8390_CABLETRON;
 183         return MAC8390_NONE;
 184 }
 185
 186 int __init mac8390_memsize(unsigned long membase)
 187 {
 188         unsigned long flags;
 189         int i, j;
 190
 191         local_irq_save(flags);
 192         /* Check up to 32K in 4K increments */
 193         for (i = 0; i < 8; i++) {
 194                 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
 195
 196                 /* Unwriteable - we have a fully decoded card and the
 197                    RAM end located */
 198                 if (hwreg_present(m) == 0)
 199                         break;
 200
 201                 /* write a distinctive byte */
 202                 *m = 0xA5A0 | i;
 203                 /* check that we read back what we wrote */
 204                 if (*m != (0xA5A0 | i))
 205                         break;
 206
 207                 /* check for partial decode and wrap */
 208                 for (j = 0; j < i; j++) {
 209                         volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
 210                         if (*p != (0xA5A0 | j))
 211                                 break;
 212                 }
 213         }
 214         local_irq_restore(flags);
 215         /* in any case, we stopped once we tried one block too many,
 216            or once we reached 32K */
 217         return i * 0x1000;
 218 }
 219
 220 struct net_device * __init mac8390_probe(int unit)
 221 {
 222         struct net_device *dev;
 223         volatile unsigned short *i;
 224         int version_disp = 0;
 225         struct nubus_dev * ndev = NULL;
 226         int err = -ENODEV;
 227
 228         struct nubus_dir dir;
 229         struct nubus_dirent ent;
 230         int offset;
 231         static unsigned int slots;
 232
 233         enum mac8390_type cardtype;
 234
 235         /* probably should check for Nubus instead */
 236
 237         if (!MACH_IS_MAC)
 238                 return ERR_PTR(-ENODEV);
 239
 240         dev = alloc_ei_netdev();
 241         if (!dev)
 242                 return ERR_PTR(-ENOMEM);
 243
 244         if (unit >= 0)
 245                 sprintf(dev->name, "eth%d", unit);
 246
 247         SET_MODULE_OWNER(dev);
 248
 249         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
 250                 /* Have we seen it already? */
 251                 if (slots & (1<<ndev->board->slot))
 252                         continue;
 253                 slots |= 1<<ndev->board->slot;
 254
 255                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
 256                         continue;
 257
 258                 if (version_disp == 0) {
 259                         version_disp = 1;
 260                         printk(version);
 261                 }
 262
 263                 dev->irq = SLOT2IRQ(ndev->board->slot);
 264                 /* This is getting to be a habit */
 265                 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
 266
 267                 /* Get some Nubus info - we will trust the card's idea
 268                    of where its memory and registers are. */
 269
 270                 if (nubus_get_func_dir(ndev, &dir) == -1) {
 271                         printk(KERN_ERR "%s: Unable to get Nubus functional"
 272                                         " directory for slot %X!\n",
 273                                dev->name, ndev->board->slot);
 274                         continue;
 275                 }
 276
 277                 /* Get the MAC address */
 278                 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
 279                         printk(KERN_INFO "%s: Couldn't get MAC address!\n",
 280                                         dev->name);
 281                         continue;
 282                 } else {
 283                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 284                         /* Some Sonic Sys cards masquerade as Farallon */
 285                         if (cardtype == MAC8390_FARALLON &&
 286                                         dev->dev_addr[0] == 0x0 &&
 287                                         dev->dev_addr[1] == 0x40 &&
 288                                         dev->dev_addr[2] == 0x10) {
 289                                 /* This is really Sonic Sys card */
 290                                 cardtype = MAC8390_SONICSYS;
 291                         }
 292                 }
 293
 294                 if (useresources[cardtype] == 1) {
 295                         nubus_rewinddir(&dir);
 296                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
 297                                 printk(KERN_ERR "%s: Memory offset resource"
 298                                                 " for slot %X not found!\n",
 299                                        dev->name, ndev->board->slot);
 300                                 continue;
 301                         }
 302                         nubus_get_rsrc_mem(&offset, &ent, 4);
 303                         dev->mem_start = dev->base_addr + offset;
 304                         /* yes, this is how the Apple driver does it */
 305                         dev->base_addr = dev->mem_start + 0x10000;
 306                         nubus_rewinddir(&dir);
 307                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
 308                                 printk(KERN_INFO "%s: Memory length resource"
 309                                                  " for slot %X not found"
 310                                                  ", probing\n",
 311                                        dev->name, ndev->board->slot);
 312                                 offset = mac8390_memsize(dev->mem_start);
 313                                 } else {
 314                                         nubus_get_rsrc_mem(&offset, &ent, 4);
 315                                 }
 316                         dev->mem_end = dev->mem_start + offset;
 317                 } else {
 318                         switch (cardtype) {
 319                                 case MAC8390_KINETICS:
 320                                 case MAC8390_DAYNA: /* it's the same */
 321                                         dev->base_addr =
 322                                                 (int)(ndev->board->slot_addr +
 323                                                 DAYNA_8390_BASE);
 324                                         dev->mem_start =
 325                                                 (int)(ndev->board->slot_addr +
 326                                                 DAYNA_8390_MEM);
 327                                         dev->mem_end =
 328                                                 dev->mem_start +
 329                                                 mac8390_memsize(dev->mem_start);
 330                                         break;
 331                                 case MAC8390_CABLETRON:
 332                                         dev->base_addr =
 333                                                 (int)(ndev->board->slot_addr +
 334                                                 CABLETRON_8390_BASE);
 335                                         dev->mem_start =
 336                                                 (int)(ndev->board->slot_addr +
 337                                                 CABLETRON_8390_MEM);
 338                                         /* The base address is unreadable if 0x00
 339                                          * has been written to the command register
 340                                          * Reset the chip by writing E8390_NODMA +
 341                                          *   E8390_PAGE0 + E8390_STOP just to be
 342                                          *   sure
 343                                          */
 344                                         i = (void *)dev->base_addr;
 345                                         *i = 0x21;
 346                                         dev->mem_end =
 347                                                 dev->mem_start +
 348                                                 mac8390_memsize(dev->mem_start);
 349                                         break;
 350
 351                                 default:
 352                                         printk(KERN_ERR "Card type %s is"
 353                                                         " unsupported, sorry\n",
 354                                                cardname[cardtype]);
 355                                         continue;
 356                         }
 357                 }
 358
 359                 /* Do the nasty 8390 stuff */
 360                 if (!mac8390_initdev(dev, ndev, cardtype))
 361                         break;
 362         }
 363
 364         if (!ndev)
 365                 goto out;
 366         err = register_netdev(dev);
 367         if (err)
 368                 goto out;
 369         return dev;
 370
 371 out:
 372         free_netdev(dev);
 373         return ERR_PTR(err);
 374 }
 375
 376 #ifdef MODULE
 377 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 378 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 379 MODULE_LICENSE("GPL");
 380
 381 /* overkill, of course */
 382 static struct net_device *dev_mac8390[15];
 383 int init_module(void)
 384 {
 385         int i;
 386         for (i = 0; i < 15; i++) {
 387                 struct net_device *dev = mac8390_probe(-1);
 388                 if (IS_ERR(dev))
 389                         break;
 390                 dev_mac890[i] = dev;
 391         }
 392         if (!i) {
 393                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
 394                 return -ENODEV;
 395         }
 396         return 0;
 397 }
 398
 399 void cleanup_module(void)
 400 {
 401         int i;
 402         for (i = 0; i < 15; i++) {
 403                 struct net_device *dev = dev_mac890[i];
 404                 if (dev) {
 405                         unregister_netdev(dev);
 406                         free_netdev(dev);
 407                 }
 408         }
 409 }
 410
 411 #endif /* MODULE */
 412
 413 static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 414                             enum mac8390_type type)
 415 {
 416         static u32 fwrd4_offsets[16]={
 417                 0,      4,      8,      12,
 418                 16,     20,     24,     28,
 419                 32,     36,     40,     44,
 420                 48,     52,     56,     60
 421         };
 422         static u32 back4_offsets[16]={
 423                 60,     56,     52,     48,
 424                 44,     40,     36,     32,
 425                 28,     24,     20,     16,
 426                 12,     8,      4,      0
 427         };
 428         static u32 fwrd2_offsets[16]={
 429                 0,      2,      4,      6,
 430                 8,     10,     12,     14,
 431                 16,    18,     20,     22,
 432                 24,    26,     28,     30
 433         };
 434
 435         int access_bitmode;
 436
 437         /* Now fill in our stuff */
 438         dev->open = &mac8390_open;
 439         dev->stop = &mac8390_close;
 440 #ifdef CONFIG_NET_POLL_CONTROLLER
 441         dev->poll_controller = ei_poll;
 442 #endif
 443
 444         /* GAR, ei_status is actually a macro even though it looks global */
 445         ei_status.name = cardname[type];
 446         ei_status.word16 = word16[type];
 447
 448         /* Cabletron's TX/RX buffers are backwards */
 449         if (type == MAC8390_CABLETRON) {
 450                ei_status.tx_start_page = CABLETRON_TX_START_PG;
 451                ei_status.rx_start_page = CABLETRON_RX_START_PG;
 452                ei_status.stop_page = CABLETRON_RX_STOP_PG;
 453                ei_status.rmem_start = dev->mem_start;
 454                ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 455         } else {
 456                ei_status.tx_start_page = WD_START_PG;
 457                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 458                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 459                ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
 460                ei_status.rmem_end = dev->mem_end;
 461         }
 462
 463         /* Fill in model-specific information and functions */
 464         switch(type) {
 465         case MAC8390_SONICSYS:
 466                 /* 16 bit card, register map is reversed */
 467                 ei_status.reset_8390 = &mac8390_no_reset;
 468                 ei_status.block_input = &slow_sane_block_input;
 469                 ei_status.block_output = &slow_sane_block_output;
 470                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 471                 ei_status.reg_offset = back4_offsets;
 472                 access_bitmode = 0;
 473                 break;
 474         case MAC8390_FARALLON:
 475         case MAC8390_APPLE:
 476         case MAC8390_ASANTE:
 477         case MAC8390_DAYNA2:
 478         case MAC8390_DAYNA3:
 479                 /* 32 bit card, register map is reversed */
 480                 /* sane */
 481                 ei_status.reset_8390 = &mac8390_no_reset;
 482                 ei_status.block_input = &sane_block_input;
 483                 ei_status.block_output = &sane_block_output;
 484                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
 485                 ei_status.reg_offset = back4_offsets;
 486                 access_bitmode = 1;
 487                 break;
 488         case MAC8390_CABLETRON:
 489                 /* 16 bit card, register map is short forward */
 490                 ei_status.reset_8390 = &mac8390_no_reset;
 491                 ei_status.block_input = &slow_sane_block_input;
 492                 ei_status.block_output = &slow_sane_block_output;
 493                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 494                 ei_status.reg_offset = fwrd2_offsets;
 495                 access_bitmode = 0;
 496                 break;
 497         case MAC8390_DAYNA:
 498         case MAC8390_KINETICS:
 499                 /* 16 bit memory */
 500                 /* dayna and similar */
 501                 ei_status.reset_8390 = &mac8390_no_reset;
 502                 ei_status.block_input = &dayna_block_input;
 503                 ei_status.block_output = &dayna_block_output;
 504                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 505                 ei_status.reg_offset = fwrd4_offsets;
 506                 access_bitmode = 0;
 507                 break;
 508         default:
 509                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
 510                 return -ENODEV;
 511         }
 512
 513         NS8390_init(dev, 0);
 514
 515         /* Good, done, now spit out some messages */
 516         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
 517                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
 518         printk(KERN_INFO "MAC ");
 519         {
 520                 int i;
 521                 for (i = 0; i < 6; i++) {
 522                         printk("%2.2x", dev->dev_addr[i]);
 523                         if (i < 5)
 524                                 printk(":");
 525                 }
 526         }
 527         printk(" IRQ %d, shared memory at %#lx-%#lx,  %d-bit access.\n",
 528                    dev->irq, dev->mem_start, dev->mem_end-1,
 529                    access_bitmode?32:16);
 530         return 0;
 531 }
 532
 533 static int mac8390_open(struct net_device *dev)
 534 {
 535         ei_open(dev);
 536         if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
 537                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 538                 return -EAGAIN;
 539         }
 540         return 0;
 541 }
 542
 543 static int mac8390_close(struct net_device *dev)
 544 {
 545         free_irq(dev->irq, dev);
 546         ei_close(dev);
 547         return 0;
 548 }
 549
 550 static void mac8390_no_reset(struct net_device *dev)
 551 {
 552         ei_status.txing = 0;
 553         if (ei_debug > 1)
 554                 printk("reset not supported\n");
 555         return;
 556 }
 557
 558 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 559 /* directly from daynaport.c by Alan Cox */
 560 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
 561 {
 562         volatile unsigned char *ptr;
 563         unsigned char *target=to;
 564         from<<=1;       /* word, skip overhead */
 565         ptr=(unsigned char *)(dev->mem_start+from);
 566         /* Leading byte? */
 567         if (from&2) {
 568                 *target++ = ptr[-1];
 569                 ptr += 2;
 570                 count--;
 571         }
 572         while(count>=2)
 573         {
 574                 *(unsigned short *)target = *(unsigned short volatile *)ptr;
 575                 ptr += 4;                       /* skip cruft */
 576                 target += 2;
 577                 count-=2;
 578         }
 579         /* Trailing byte? */
 580         if(count)
 581                 *target = *ptr;
 582 }
 583
 584 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
 585 {
 586         volatile unsigned short *ptr;
 587         const unsigned char *src=from;
 588         to<<=1; /* word, skip overhead */
 589         ptr=(unsigned short *)(dev->mem_start+to);
 590         /* Leading byte? */
 591         if (to&2) { /* avoid a byte write (stomps on other data) */
 592                 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
 593                 ptr++;
 594                 count--;
 595         }
 596         while(count>=2)
 597         {
 598                 *ptr++=*(unsigned short *)src;          /* Copy and */
 599                 ptr++;                  /* skip cruft */
 600                 src += 2;
 601                 count-=2;
 602         }
 603         /* Trailing byte? */
 604         if(count)
 605         {
 606                 /* card doesn't like byte writes */
 607                 *ptr=(*ptr&0x00FF)|(*src << 8);
 608         }
 609 }
 610
 611 /* sane block input/output */
 612 static void sane_get_8390_hdr(struct net_device *dev,
 613                               struct e8390_pkt_hdr *hdr, int ring_page)
 614 {
 615         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 616         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
 617         /* Fix endianness */
 618         hdr->count = swab16(hdr->count);
 619 }
 620
 621 static void sane_block_input(struct net_device *dev, int count,
 622                              struct sk_buff *skb, int ring_offset)
 623 {
 624         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 625         unsigned long xfer_start = xfer_base + dev->mem_start;
 626
 627         if (xfer_start + count > ei_status.rmem_end) {
 628                 /* We must wrap the input move. */
 629                 int semi_count = ei_status.rmem_end - xfer_start;
 630                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
 631                 count -= semi_count;
 632                 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
 633         } else {
 634                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
 635         }
 636 }
 637
 638 static void sane_block_output(struct net_device *dev, int count,
 639                               const unsigned char *buf, int start_page)
 640 {
 641         long shmem = (start_page - WD_START_PG)<<8;
 642
 643         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
 644 }
 645
 646 /* dayna block input/output */
 647 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 648 {
 649         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 650
 651         dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
 652         /* Fix endianness */
 653         hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
 654 }
 655
 656 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
 657 {
 658         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 659         unsigned long xfer_start = xfer_base+dev->mem_start;
 660
 661         /* Note the offset math is done in card memory space which is word
 662            per long onto our space. */
 663
 664         if (xfer_start + count > ei_status.rmem_end)
 665         {
 666                 /* We must wrap the input move. */
 667                 int semi_count = ei_status.rmem_end - xfer_start;
 668                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 669                 count -= semi_count;
 670                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 671                                       ei_status.rmem_start - dev->mem_start,
 672                                       count);
 673         }
 674         else
 675         {
 676                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 677         }
 678 }
 679
 680 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
 681                                 int start_page)
 682 {
 683         long shmem = (start_page - WD_START_PG)<<8;
 684
 685         dayna_memcpy_tocard(dev, shmem, buf, count);
 686 }
 687
 688 /* Cabletron block I/O */
 689 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 690         int ring_page)
 691 {
 692         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 693         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
 694         /* Register endianism - fix here rather than 8390.c */
 695         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 696 }
 697
 698 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
 699         int ring_offset)
 700 {
 701         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 702         unsigned long xfer_start = xfer_base+dev->mem_start;
 703
 704         if (xfer_start + count > ei_status.rmem_end)
 705         {
 706                 /* We must wrap the input move. */
 707                 int semi_count = ei_status.rmem_end - xfer_start;
 708                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 709                         xfer_base, semi_count);
 710                 count -= semi_count;
 711                 word_memcpy_fromcard(skb->data + semi_count,
 712                                      (char *)ei_status.rmem_start, count);
 713         }
 714         else
 715         {
 716                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 717                         xfer_base, count);
 718         }
 719 }
 720
 721 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
 722         int start_page)
 723 {
 724         long shmem = (start_page - WD_START_PG)<<8;
 725
 726         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 727 }
 728
 729 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 730 {
 731         volatile unsigned short *to = tp;
 732         const unsigned short *from = fp;
 733
 734         count++;
 735         count/=2;
 736
 737         while(count--)
 738                 *to++=*from++;
 739 }
 740
 741 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 742 {
 743         unsigned short *to = tp;
 744         const volatile unsigned short *from = fp;
 745
 746         count++;
 747         count/=2;
 748
 749         while(count--)
 750                 *to++=*from++;
 751 }
 752
 753