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
  21 #include <linux/kernel.h>
  22 #include <linux/sched.h>
  23 #include <linux/types.h>
  24 #include <linux/fcntl.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/ptrace.h>
  27 #include <linux/ioport.h>
  28 #include <linux/nubus.h>
  29 #include <linux/in.h>
  30 #include <linux/slab.h>
  31 #include <linux/string.h>
  32 #include <asm/system.h>
  33 #include <asm/bitops.h>
  34 #include <asm/io.h>
  35 #include <asm/dma.h>
  36 #include <asm/hwtest.h>
  37 #include <asm/macints.h>
  38 #include <linux/errno.h>
  39 #include <linux/init.h>
  40
  41 #include <linux/netdevice.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/skbuff.h>
  44 #include "8390.h"
  45
  46 #if (LINUX_VERSION_CODE < 0x02030e)
  47 #define net_device device
  48 #endif
  49
  50 #define WD_START_PG                     0x00    /* First page of TX buffer */
  51 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
  52 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
  53 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG  /* First page of TX buffer */
  54
  55 /* Unfortunately it seems we have to hardcode these for the moment */
  56 /* 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? */
  57
  58 #define DAYNA_8390_BASE         0x80000
  59 #define DAYNA_8390_MEM          0x00000
  60
  61 #define KINETICS_8390_BASE      0x80000
  62 #define KINETICS_8390_MEM       0x00000
  63
  64 #define CABLETRON_8390_BASE     0x90000
  65 #define CABLETRON_8390_MEM      0x00000
  66
  67 enum mac8390_type {
  68         MAC8390_NONE = -1,
  69         MAC8390_APPLE,
  70         MAC8390_ASANTE,
  71         MAC8390_FARALLON,  /* Apple, Asante, and Farallon are all compatible */
  72         MAC8390_CABLETRON,
  73         MAC8390_DAYNA,
  74         MAC8390_INTERLAN,
  75         MAC8390_KINETICS,
  76         MAC8390_FOCUS,
  77         MAC8390_SONICSYS,
  78         MAC8390_DAYNA2,
  79         MAC8390_DAYNA3,
  80 };
  81
  82 static const char * cardname[] = {
  83         "apple",
  84         "asante",
  85         "farallon",
  86         "cabletron",
  87         "dayna",
  88         "interlan",
  89         "kinetics",
  90         "focus",
  91         "sonic systems",
  92         "dayna2",
  93         "dayna_lc",
  94 };
  95
  96 static int word16[] = {
  97         1, /* apple */
  98         1, /* asante */
  99         1, /* farallon */
 100         1, /* cabletron */
 101         0, /* dayna */
 102         1, /* interlan */
 103         0, /* kinetics */
 104         1, /* focus (??) */
 105         1, /* sonic systems  */
 106         1, /* dayna2 */
 107         1, /* dayna-lc */
 108 };
 109
 110 /* on which cards do we use NuBus resources? */
 111 static int useresources[] = {
 112         1, /* apple */
 113         1, /* asante */
 114         1, /* farallon */
 115         0, /* cabletron */
 116         0, /* dayna */
 117         0, /* interlan */
 118         0, /* kinetics */
 119         0, /* focus (??) */
 120         1, /* sonic systems */
 121         1, /* dayna2 */
 122         1, /* dayna-lc */
 123 };
 124
 125 static const char __initdata * version =
 126         "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
 127
 128 extern int mac8390_probe(struct net_device * dev);
 129 extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
 130 extern int mac8390_memsize(unsigned long membase);
 131 extern int mac8390_memtest(struct net_device * dev);
 132 extern int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 133                            enum mac8390_type type);
 134
 135 static int mac8390_open(struct net_device * dev);
 136 static int mac8390_close(struct net_device * dev);
 137 static void mac8390_no_reset(struct net_device *dev);
 138
 139 /* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
 140 static void sane_get_8390_hdr(struct net_device *dev,
 141                               struct e8390_pkt_hdr *hdr, int ring_page);
 142 static void sane_block_input(struct net_device * dev, int count,
 143                              struct sk_buff * skb, int ring_offset);
 144 static void sane_block_output(struct net_device * dev, int count,
 145                               const unsigned char * buf, const int start_page);
 146
 147 /* dayna_memcpy to and from card */
 148 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 149                                 int from, int count);
 150 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 151                               const void *from, int count);
 152
 153 /* Dayna - Dayna/Kinetics use this */
 154 static void dayna_get_8390_hdr(struct net_device *dev,
 155                                struct e8390_pkt_hdr *hdr, int ring_page);
 156 static void dayna_block_input(struct net_device *dev, int count,
 157                               struct sk_buff *skb, int ring_offset);
 158 static void dayna_block_output(struct net_device *dev, int count,
 159                                const unsigned char *buf, int start_page);
 160
 161 #define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
 162 #define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
 163
 164 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
 165 static void slow_sane_get_8390_hdr(struct net_device *dev,
 166                                    struct e8390_pkt_hdr *hdr, int ring_page);
 167 static void slow_sane_block_input(struct net_device *dev, int count,
 168                                   struct sk_buff *skb, int ring_offset);
 169 static void slow_sane_block_output(struct net_device *dev, int count,
 170                                    const unsigned char *buf, int start_page);
 171 static void word_memcpy_tocard(void *tp, const void *fp, int count);
 172 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
 173
 174 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
 175 {
 176         if (dev->dr_sw == NUBUS_DRSW_ASANTE)
 177                 return MAC8390_ASANTE;
 178         if (dev->dr_sw == NUBUS_DRSW_FARALLON)
 179                 return MAC8390_FARALLON;
 180         if (dev->dr_sw == NUBUS_DRSW_KINETICS)
 181                 return MAC8390_KINETICS;
 182         if (dev->dr_sw == NUBUS_DRSW_DAYNA)
 183                 return MAC8390_DAYNA;
 184         if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
 185                 return MAC8390_DAYNA2;
 186         if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
 187                 return MAC8390_DAYNA3;
 188         if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
 189                 return MAC8390_CABLETRON;
 190         return MAC8390_NONE;
 191 }
 192
 193 int __init mac8390_memsize(unsigned long membase)
 194 {
 195         unsigned long flags;
 196         int i, j;
 197
 198         save_flags(flags); cli();
 199         /* Check up to 32K in 4K increments */
 200         for (i = 0; i < 8; i++) {
 201                 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
 202
 203                 /* Unwriteable - we have a fully decoded card and the
 204                    RAM end located */
 205                 if (hwreg_present(m) == 0)
 206                         break;
 207
 208                 /* write a distinctive byte */
 209                 *m = 0xA5A0 | i;
 210                 /* check that we read back what we wrote */
 211                 if (*m != (0xA5A0 | i))
 212                         break;
 213
 214                 /* check for partial decode and wrap */
 215                 for (j = 0; j < i; j++) {
 216                         volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
 217                         if (*p != (0xA5A0 | j))
 218                                 break;
 219                 }
 220         }
 221         restore_flags(flags);
 222         /* in any case, we stopped once we tried one block too many,
 223            or once we reached 32K */
 224         return i * 0x1000;
 225 }
 226
 227 static int probed __initdata = 0;
 228
 229 int __init mac8390_probe(struct net_device * dev)
 230 {
 231         volatile unsigned short *i;
 232         int boards_found = 0;
 233         int version_disp = 0;
 234         struct nubus_dev * ndev = NULL;
 235
 236         struct nubus_dir dir;
 237         struct nubus_dirent ent;
 238         int offset;
 239
 240         enum mac8390_type cardtype;
 241
 242         if (probed)
 243                 return -ENODEV;
 244         probed++;
 245
 246         /* probably should check for Nubus instead */
 247
 248         if (!MACH_IS_MAC)
 249                 return -ENODEV;
 250
 251         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
 252
 253                 dev = NULL;
 254
 255                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
 256                         continue;
 257
 258                 dev = init_etherdev(dev, 0);
 259                 if (dev == NULL) {
 260                         printk(KERN_ERR "Unable to allocate etherdev"
 261                                         "structure!\n");
 262                         return -ENOMEM;
 263                 }
 264
 265                 if (version_disp == 0) {
 266                         version_disp = 1;
 267                         printk(version);
 268                 }
 269
 270                 dev->irq = SLOT2IRQ(ndev->board->slot);
 271                 /* This is getting to be a habit */
 272                 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
 273
 274                 /* Get some Nubus info - we will trust the card's idea
 275                    of where its memory and registers are. */
 276
 277                 if (nubus_get_func_dir(ndev, &dir) == -1) {
 278                         printk(KERN_ERR "%s: Unable to get Nubus functional"
 279                                         " directory for slot %X!\n",
 280                                dev->name, ndev->board->slot);
 281                         continue;
 282                 }
 283
 284                 /* Get the MAC address */
 285                 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
 286                         printk(KERN_INFO "%s: Couldn't get MAC address!\n",
 287                                         dev->name);
 288                         continue;
 289                 } else {
 290                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 291                         /* Some Sonic Sys cards masquerade as Farallon */
 292                         if (cardtype == MAC8390_FARALLON &&
 293                                         dev->dev_addr[0] == 0x0 &&
 294                                         dev->dev_addr[1] == 0x40 &&
 295                                         dev->dev_addr[2] == 0x10) {
 296                                 /* This is really Sonic Sys card */
 297                                 cardtype = MAC8390_SONICSYS;
 298                         }
 299                 }
 300
 301                 if (useresources[cardtype] == 1) {
 302                         nubus_rewinddir(&dir);
 303                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
 304                                 printk(KERN_ERR "%s: Memory offset resource"
 305                                                 " for slot %X not found!\n",
 306                                        dev->name, ndev->board->slot);
 307                                 continue;
 308                         }
 309                         nubus_get_rsrc_mem(&offset, &ent, 4);
 310                         dev->mem_start = dev->base_addr + offset;
 311                         /* yes, this is how the Apple driver does it */
 312                         dev->base_addr = dev->mem_start + 0x10000;
 313                         nubus_rewinddir(&dir);
 314                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
 315                                 printk(KERN_INFO "%s: Memory length resource"
 316                                                  " for slot %X not found"
 317                                                  ", probing\n",
 318                                        dev->name, ndev->board->slot);
 319                                 offset = mac8390_memsize(dev->mem_start);
 320                                 } else {
 321                                         nubus_get_rsrc_mem(&offset, &ent, 4);
 322                                 }
 323                         dev->mem_end = dev->mem_start + offset;
 324                 } else {
 325                         switch (cardtype) {
 326                                 case MAC8390_KINETICS:
 327                                 case MAC8390_DAYNA: /* it's the same */
 328                                         dev->base_addr =
 329                                                 (int)(ndev->board->slot_addr +
 330                                                 DAYNA_8390_BASE);
 331                                         dev->mem_start =
 332                                                 (int)(ndev->board->slot_addr +
 333                                                 DAYNA_8390_MEM);
 334                                         dev->mem_end =
 335                                                 dev->mem_start +
 336                                                 mac8390_memsize(dev->mem_start);
 337                                         break;
 338                                 case MAC8390_CABLETRON:
 339                                         dev->base_addr =
 340                                                 (int)(ndev->board->slot_addr +
 341                                                 CABLETRON_8390_BASE);
 342                                         dev->mem_start =
 343                                                 (int)(ndev->board->slot_addr +
 344                                                 CABLETRON_8390_MEM);
 345                                         /* The base address is unreadable if 0x00
 346                                          * has been written to the command register
 347                                          * Reset the chip by writing E8390_NODMA +
 348                                          *   E8390_PAGE0 + E8390_STOP just to be
 349                                          *   sure
 350                                          */
 351                                         i = (void *)dev->base_addr;
 352                                         *i = 0x21;
 353                                         dev->mem_end =
 354                                                 dev->mem_start +
 355                                                 mac8390_memsize(dev->mem_start);
 356                                         break;
 357
 358                                 default:
 359                                         printk(KERN_ERR "Card type %s is"
 360                                                         " unsupported, sorry\n",
 361                                                cardname[cardtype]);
 362                                         return -ENODEV;
 363                         }
 364                 }
 365
 366                 /* Do the nasty 8390 stuff */
 367                 if (mac8390_initdev(dev, ndev, cardtype))
 368                         continue;
 369                 boards_found++;
 370         }
 371
 372         /* We're outta here */
 373         if (boards_found > 0)
 374                 return 0;
 375         else
 376                 return -ENODEV;
 377 }
 378
 379 #ifdef MODULE
 380 #if LINUX_VERSION_CODE > 0x20118
 381 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 382 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 383 MODUEL_LICENSE("GPL");
 384 #endif
 385
 386 int init_module(void)
 387 {
 388         if (mac8390_probe(NULL)) {
 389                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
 390                 return -ENODEV;
 391         }
 392         lock_8390_module();
 393         return 0;
 394 }
 395
 396 void cleanup_module(void)
 397 {
 398         /* FIXME: should probably keep track of net_device structs
 399            somewhere and unregister them here? */
 400         unlock_8390_module();
 401 }
 402
 403 #endif /* MODULE */
 404
 405 int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 406                             enum mac8390_type type)
 407 {
 408         static u32 fwrd4_offsets[16]={
 409                 0,      4,      8,      12,
 410                 16,     20,     24,     28,
 411                 32,     36,     40,     44,
 412                 48,     52,     56,     60
 413         };
 414         static u32 back4_offsets[16]={
 415                 60,     56,     52,     48,
 416                 44,     40,     36,     32,
 417                 28,     24,     20,     16,
 418                 12,     8,      4,      0
 419         };
 420         static u32 fwrd2_offsets[16]={
 421                 0,      2,      4,      6,
 422                 8,     10,     12,     14,
 423                 16,    18,     20,     22,
 424                 24,    26,     28,     30
 425         };
 426
 427         int access_bitmode;
 428
 429         /* 8390 specific init for dev - allocates dev->priv */
 430         if (ethdev_init(dev)) {
 431                 printk(KERN_ERR "%s: Unable to allocate memory for dev->priv!\n", dev->name);
 432                 return -ENOMEM;
 433         }
 434
 435         /* Now fill in our stuff */
 436         dev->open = &mac8390_open;
 437         dev->stop = &mac8390_close;
 438
 439         /* GAR, ei_status is actually a macro even though it looks global */
 440         ei_status.name = cardname[type];
 441         ei_status.word16 = word16[type];
 442
 443         /* Cabletron's TX/RX buffers are backwards */
 444         if (type == MAC8390_CABLETRON) {
 445                ei_status.tx_start_page = CABLETRON_TX_START_PG;
 446                ei_status.rx_start_page = CABLETRON_RX_START_PG;
 447                ei_status.stop_page = CABLETRON_RX_STOP_PG;
 448                dev->rmem_start = dev->mem_start;
 449                dev->rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 450         } else {
 451                ei_status.tx_start_page = WD_START_PG;
 452                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 453                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 454                dev->rmem_start = dev->mem_start + TX_PAGES*256;
 455                dev->rmem_end = dev->mem_end;
 456         }
 457
 458         /* Fill in model-specific information and functions */
 459         switch(type) {
 460         case MAC8390_SONICSYS:
 461                 /* 16 bit card, register map is reversed */
 462                 ei_status.reset_8390 = &mac8390_no_reset;
 463                 ei_status.block_input = &slow_sane_block_input;
 464                 ei_status.block_output = &slow_sane_block_output;
 465                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 466                 ei_status.reg_offset = back4_offsets;
 467                 access_bitmode = 0;
 468                 break;
 469         case MAC8390_FARALLON:
 470         case MAC8390_APPLE:
 471         case MAC8390_ASANTE:
 472         case MAC8390_DAYNA2:
 473         case MAC8390_DAYNA3:
 474                 /* 32 bit card, register map is reversed */
 475                 /* sane */
 476                 ei_status.reset_8390 = &mac8390_no_reset;
 477                 ei_status.block_input = &sane_block_input;
 478                 ei_status.block_output = &sane_block_output;
 479                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
 480                 ei_status.reg_offset = back4_offsets;
 481                 access_bitmode = 1;
 482                 break;
 483         case MAC8390_CABLETRON:
 484                 /* 16 bit card, register map is short forward */
 485                 ei_status.reset_8390 = &mac8390_no_reset;
 486                 ei_status.block_input = &slow_sane_block_input;
 487                 ei_status.block_output = &slow_sane_block_output;
 488                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 489                 ei_status.reg_offset = fwrd2_offsets;
 490                 access_bitmode = 0;
 491                 break;
 492         case MAC8390_DAYNA:
 493         case MAC8390_KINETICS:
 494                 /* 16 bit memory */
 495                 /* dayna and similar */
 496                 ei_status.reset_8390 = &mac8390_no_reset;
 497                 ei_status.block_input = &dayna_block_input;
 498                 ei_status.block_output = &dayna_block_output;
 499                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 500                 ei_status.reg_offset = fwrd4_offsets;
 501                 access_bitmode = 0;
 502                 break;
 503         default:
 504                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
 505                 return -ENODEV;
 506         }
 507
 508         NS8390_init(dev, 0);
 509
 510         /* Good, done, now spit out some messages */
 511         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
 512                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
 513         printk(KERN_INFO "MAC ");
 514         {
 515                 int i;
 516                 for (i = 0; i < 6; i++) {
 517                         printk("%2.2x", dev->dev_addr[i]);
 518                         if (i < 5)
 519                                 printk(":");
 520                 }
 521         }
 522         printk(" IRQ %d, shared memory at %#lx-%#lx,  %d-bit access.\n",
 523                    dev->irq, dev->mem_start, dev->mem_end-1,
 524                    access_bitmode?32:16);
 525         return 0;
 526 }
 527
 528 static int mac8390_open(struct net_device *dev)
 529 {
 530         ei_open(dev);
 531         if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
 532                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 533                 return -EAGAIN;
 534         }
 535         MOD_INC_USE_COUNT;
 536         return 0;
 537 }
 538
 539 static int mac8390_close(struct net_device *dev)
 540 {
 541         free_irq(dev->irq, dev);
 542         ei_close(dev);
 543         MOD_DEC_USE_COUNT;
 544         return 0;
 545 }
 546
 547 static void mac8390_no_reset(struct net_device *dev)
 548 {
 549         ei_status.txing = 0;
 550         if (ei_debug > 1)
 551                 printk("reset not supported\n");
 552         return;
 553 }
 554
 555 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 556 /* directly from daynaport.c by Alan Cox */
 557 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
 558 {
 559         volatile unsigned short *ptr;
 560         unsigned short *target=to;
 561         from<<=1;       /* word, skip overhead */
 562         ptr=(unsigned short *)(dev->mem_start+from);
 563         /* Leading byte? */
 564         if (from&2) {
 565                 *((char *)target)++ = *(((char *)ptr++)-1);
 566                 count--;
 567         }
 568         while(count>=2)
 569         {
 570                 *target++=*ptr++;       /* Copy and */
 571                 ptr++;                  /* skip cruft */
 572                 count-=2;
 573         }
 574         /* Trailing byte? */
 575         if(count)
 576         {
 577                 /* Big endian */
 578                 unsigned short v=*ptr;
 579                 *((char *)target)=v>>8;
 580         }
 581 }
 582
 583 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
 584 {
 585         volatile unsigned short *ptr;
 586         const unsigned short *src=from;
 587         to<<=1; /* word, skip overhead */
 588         ptr=(unsigned short *)(dev->mem_start+to);
 589         /* Leading byte? */
 590         if (to&2) { /* avoid a byte write (stomps on other data) */
 591                 ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
 592                 ptr++;
 593                 count--;
 594         }
 595         while(count>=2)
 596         {
 597                 *ptr++=*src++;          /* Copy and */
 598                 ptr++;                  /* skip cruft */
 599                 count-=2;
 600         }
 601         /* Trailing byte? */
 602         if(count)
 603         {
 604                 /* Big endian */
 605                 unsigned short v=*src;
 606                 /* card doesn't like byte writes */
 607                 *ptr=(*ptr&0x00FF)|(v&0xFF00);
 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 > dev->rmem_end) {
 628                 /* We must wrap the input move. */
 629                 int semi_count = dev->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 *)dev->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 > dev->rmem_end)
 665         {
 666                 /* We must wrap the input move. */
 667                 int semi_count = dev->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                         dev->rmem_start - dev->mem_start, count);
 672         }
 673         else
 674         {
 675                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 676         }
 677 }
 678
 679 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
 680                                 int start_page)
 681 {
 682         long shmem = (start_page - WD_START_PG)<<8;
 683
 684         dayna_memcpy_tocard(dev, shmem, buf, count);
 685 }
 686
 687 /* Cabletron block I/O */
 688 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 689         int ring_page)
 690 {
 691         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 692         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
 693         /* Register endianism - fix here rather than 8390.c */
 694         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 695 }
 696
 697 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
 698         int ring_offset)
 699 {
 700         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 701         unsigned long xfer_start = xfer_base+dev->mem_start;
 702
 703         if (xfer_start + count > dev->rmem_end)
 704         {
 705                 /* We must wrap the input move. */
 706                 int semi_count = dev->rmem_end - xfer_start;
 707                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 708                         xfer_base, semi_count);
 709                 count -= semi_count;
 710                 word_memcpy_fromcard(skb->data + semi_count,
 711                         (char *)dev->rmem_start, count);
 712         }
 713         else
 714         {
 715                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 716                         xfer_base, count);
 717         }
 718 }
 719
 720 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
 721         int start_page)
 722 {
 723         long shmem = (start_page - WD_START_PG)<<8;
 724
 725         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 726 }
 727
 728 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 729 {
 730         volatile unsigned short *to = tp;
 731         const unsigned short *from = fp;
 732
 733         count++;
 734         count/=2;
 735
 736         while(count--)
 737                 *to++=*from++;
 738 }
 739
 740 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 741 {
 742         unsigned short *to = tp;
 743         const volatile unsigned short *from = fp;
 744
 745         count++;
 746         count/=2;
 747
 748         while(count--)
 749                 *to++=*from++;
 750 }
 751
 752