git.oblomov.eu Git - linux-2.6/blob - 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 /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */
  18 /* 2003-12-26: Make sure Asante cards always work. */
  19
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/types.h>
  23 #include <linux/fcntl.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/ptrace.h>
  26 #include <linux/ioport.h>
  27 #include <linux/nubus.h>
  28 #include <linux/in.h>
  29 #include <linux/slab.h>
  30 #include <linux/string.h>
  31 #include <linux/errno.h>
  32 #include <linux/init.h>
  33 #include <linux/netdevice.h>
  34 #include <linux/etherdevice.h>
  35 #include <linux/skbuff.h>
  36 #include <linux/bitops.h>
  37
  38 #include <asm/system.h>
  39 #include <asm/io.h>
  40 #include <asm/dma.h>
  41 #include <asm/hwtest.h>
  42 #include <asm/macints.h>
  43
  44 static char version[] =
  45         "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
  46
  47 #define EI_SHIFT(x)     (ei_local->reg_offset[x])
  48 #define ei_inb(port)   in_8(port)
  49 #define ei_outb(val,port)  out_8(port,val)
  50 #define ei_inb_p(port)   in_8(port)
  51 #define ei_outb_p(val,port)  out_8(port,val)
  52
  53 #include "lib8390.c"
  54
  55 #define WD_START_PG                     0x00    /* First page of TX buffer */
  56 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
  57 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
  58 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG  /* First page of TX buffer */
  59
  60 /* Unfortunately it seems we have to hardcode these for the moment */
  61 /* 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? */
  62
  63 #define DAYNA_8390_BASE         0x80000
  64 #define DAYNA_8390_MEM          0x00000
  65
  66 #define CABLETRON_8390_BASE     0x90000
  67 #define CABLETRON_8390_MEM      0x00000
  68
  69 #define INTERLAN_8390_BASE      0xE0000
  70 #define INTERLAN_8390_MEM       0xD0000
  71
  72 enum mac8390_type {
  73         MAC8390_NONE = -1,
  74         MAC8390_APPLE,
  75         MAC8390_ASANTE,
  76         MAC8390_FARALLON,
  77         MAC8390_CABLETRON,
  78         MAC8390_DAYNA,
  79         MAC8390_INTERLAN,
  80         MAC8390_KINETICS,
  81 };
  82
  83 static const char * cardname[] = {
  84         "apple",
  85         "asante",
  86         "farallon",
  87         "cabletron",
  88         "dayna",
  89         "interlan",
  90         "kinetics",
  91 };
  92
  93 static int word16[] = {
  94         1, /* apple */
  95         1, /* asante */
  96         1, /* farallon */
  97         1, /* cabletron */
  98         0, /* dayna */
  99         1, /* interlan */
 100         0, /* kinetics */
 101 };
 102
 103 /* on which cards do we use NuBus resources? */
 104 static int useresources[] = {
 105         1, /* apple */
 106         1, /* asante */
 107         1, /* farallon */
 108         0, /* cabletron */
 109         0, /* dayna */
 110         0, /* interlan */
 111         0, /* kinetics */
 112 };
 113
 114 enum mac8390_access {
 115         ACCESS_UNKNOWN = 0,
 116         ACCESS_32,
 117         ACCESS_16,
 118 };
 119
 120 extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
 121 extern int mac8390_memsize(unsigned long membase);
 122 extern int mac8390_memtest(struct net_device * dev);
 123 static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 124                            enum mac8390_type type);
 125
 126 static int mac8390_open(struct net_device * dev);
 127 static int mac8390_close(struct net_device * dev);
 128 static void mac8390_no_reset(struct net_device *dev);
 129 static void interlan_reset(struct net_device *dev);
 130
 131 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/
 132 static void sane_get_8390_hdr(struct net_device *dev,
 133                               struct e8390_pkt_hdr *hdr, int ring_page);
 134 static void sane_block_input(struct net_device * dev, int count,
 135                              struct sk_buff * skb, int ring_offset);
 136 static void sane_block_output(struct net_device * dev, int count,
 137                               const unsigned char * buf, const int start_page);
 138
 139 /* dayna_memcpy to and from card */
 140 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 141                                 int from, int count);
 142 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 143                               const void *from, int count);
 144
 145 /* Dayna - Dayna/Kinetics use this */
 146 static void dayna_get_8390_hdr(struct net_device *dev,
 147                                struct e8390_pkt_hdr *hdr, int ring_page);
 148 static void dayna_block_input(struct net_device *dev, int count,
 149                               struct sk_buff *skb, int ring_offset);
 150 static void dayna_block_output(struct net_device *dev, int count,
 151                                const unsigned char *buf, int start_page);
 152
 153 #define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
 154 #define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
 155
 156 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
 157 static void slow_sane_get_8390_hdr(struct net_device *dev,
 158                                    struct e8390_pkt_hdr *hdr, int ring_page);
 159 static void slow_sane_block_input(struct net_device *dev, int count,
 160                                   struct sk_buff *skb, int ring_offset);
 161 static void slow_sane_block_output(struct net_device *dev, int count,
 162                                    const unsigned char *buf, int start_page);
 163 static void word_memcpy_tocard(void *tp, const void *fp, int count);
 164 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
 165
 166 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
 167 {
 168         switch (dev->dr_sw) {
 169                 case NUBUS_DRSW_3COM:
 170                         switch (dev->dr_hw) {
 171                                 case NUBUS_DRHW_APPLE_SONIC_NB:
 172                                 case NUBUS_DRHW_APPLE_SONIC_LC:
 173                                 case NUBUS_DRHW_SONNET:
 174                                         return MAC8390_NONE;
 175                                         break;
 176                                 default:
 177                                         return MAC8390_APPLE;
 178                                         break;
 179                         }
 180                         break;
 181
 182                 case NUBUS_DRSW_APPLE:
 183                         switch (dev->dr_hw) {
 184                                 case NUBUS_DRHW_ASANTE_LC:
 185                                         return MAC8390_NONE;
 186                                         break;
 187                                 case NUBUS_DRHW_CABLETRON:
 188                                         return MAC8390_CABLETRON;
 189                                         break;
 190                                 default:
 191                                         return MAC8390_APPLE;
 192                                         break;
 193                         }
 194                         break;
 195
 196                 case NUBUS_DRSW_ASANTE:
 197                         return MAC8390_ASANTE;
 198                         break;
 199
 200                 case NUBUS_DRSW_TECHWORKS:
 201                 case NUBUS_DRSW_DAYNA2:
 202                 case NUBUS_DRSW_DAYNA_LC:
 203                         if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
 204                                 return MAC8390_CABLETRON;
 205                         else
 206                                 return MAC8390_APPLE;
 207                         break;
 208
 209                 case NUBUS_DRSW_FARALLON:
 210                         return MAC8390_FARALLON;
 211                         break;
 212
 213                 case NUBUS_DRSW_KINETICS:
 214                         switch (dev->dr_hw) {
 215                                 case NUBUS_DRHW_INTERLAN:
 216                                         return MAC8390_INTERLAN;
 217                                         break;
 218                                 default:
 219                                         return MAC8390_KINETICS;
 220                                         break;
 221                         }
 222                         break;
 223
 224                 case NUBUS_DRSW_DAYNA:
 225                         // These correspond to Dayna Sonic cards
 226                         // which use the macsonic driver
 227                         if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
 228                                 dev->dr_hw == NUBUS_DRHW_INTERLAN )
 229                                 return MAC8390_NONE;
 230                         else
 231                                 return MAC8390_DAYNA;
 232                         break;
 233         }
 234         return MAC8390_NONE;
 235 }
 236
 237 enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
 238 {
 239         unsigned long outdata = 0xA5A0B5B0;
 240         unsigned long indata =  0x00000000;
 241         /* Try writing 32 bits */
 242         memcpy((char *)membase, (char *)&outdata, 4);
 243         /* Now compare them */
 244         if (memcmp((char *)&outdata, (char *)membase, 4) == 0)
 245                 return ACCESS_32;
 246         /* Write 16 bit output */
 247         word_memcpy_tocard((char *)membase, (char *)&outdata, 4);
 248         /* Now read it back */
 249         word_memcpy_fromcard((char *)&indata, (char *)membase, 4);
 250         if (outdata == indata)
 251                 return ACCESS_16;
 252         return ACCESS_UNKNOWN;
 253 }
 254
 255 int __init mac8390_memsize(unsigned long membase)
 256 {
 257         unsigned long flags;
 258         int i, j;
 259
 260         local_irq_save(flags);
 261         /* Check up to 32K in 4K increments */
 262         for (i = 0; i < 8; i++) {
 263                 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
 264
 265                 /* Unwriteable - we have a fully decoded card and the
 266                    RAM end located */
 267                 if (hwreg_present(m) == 0)
 268                         break;
 269
 270                 /* write a distinctive byte */
 271                 *m = 0xA5A0 | i;
 272                 /* check that we read back what we wrote */
 273                 if (*m != (0xA5A0 | i))
 274                         break;
 275
 276                 /* check for partial decode and wrap */
 277                 for (j = 0; j < i; j++) {
 278                         volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
 279                         if (*p != (0xA5A0 | j))
 280                                 break;
 281                 }
 282         }
 283         local_irq_restore(flags);
 284         /* in any case, we stopped once we tried one block too many,
 285            or once we reached 32K */
 286         return i * 0x1000;
 287 }
 288
 289 struct net_device * __init mac8390_probe(int unit)
 290 {
 291         struct net_device *dev;
 292         volatile unsigned short *i;
 293         int version_disp = 0;
 294         struct nubus_dev * ndev = NULL;
 295         int err = -ENODEV;
 296
 297         struct nubus_dir dir;
 298         struct nubus_dirent ent;
 299         int offset;
 300         static unsigned int slots;
 301
 302         enum mac8390_type cardtype;
 303
 304         /* probably should check for Nubus instead */
 305
 306         if (!MACH_IS_MAC)
 307                 return ERR_PTR(-ENODEV);
 308
 309         dev = ____alloc_ei_netdev(0);
 310         if (!dev)
 311                 return ERR_PTR(-ENOMEM);
 312
 313         if (unit >= 0)
 314                 sprintf(dev->name, "eth%d", unit);
 315
 316         SET_MODULE_OWNER(dev);
 317
 318         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
 319                 /* Have we seen it already? */
 320                 if (slots & (1<<ndev->board->slot))
 321                         continue;
 322                 slots |= 1<<ndev->board->slot;
 323
 324                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
 325                         continue;
 326
 327                 if (version_disp == 0) {
 328                         version_disp = 1;
 329                         printk(version);
 330                 }
 331
 332                 dev->irq = SLOT2IRQ(ndev->board->slot);
 333                 /* This is getting to be a habit */
 334                 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
 335
 336                 /* Get some Nubus info - we will trust the card's idea
 337                    of where its memory and registers are. */
 338
 339                 if (nubus_get_func_dir(ndev, &dir) == -1) {
 340                         printk(KERN_ERR "%s: Unable to get Nubus functional"
 341                                         " directory for slot %X!\n",
 342                                dev->name, ndev->board->slot);
 343                         continue;
 344                 }
 345
 346                 /* Get the MAC address */
 347                 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
 348                         printk(KERN_INFO "%s: Couldn't get MAC address!\n",
 349                                         dev->name);
 350                         continue;
 351                 } else {
 352                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 353                 }
 354
 355                 if (useresources[cardtype] == 1) {
 356                         nubus_rewinddir(&dir);
 357                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
 358                                 printk(KERN_ERR "%s: Memory offset resource"
 359                                                 " for slot %X not found!\n",
 360                                        dev->name, ndev->board->slot);
 361                                 continue;
 362                         }
 363                         nubus_get_rsrc_mem(&offset, &ent, 4);
 364                         dev->mem_start = dev->base_addr + offset;
 365                         /* yes, this is how the Apple driver does it */
 366                         dev->base_addr = dev->mem_start + 0x10000;
 367                         nubus_rewinddir(&dir);
 368                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
 369                                 printk(KERN_INFO "%s: Memory length resource"
 370                                                  " for slot %X not found"
 371                                                  ", probing\n",
 372                                        dev->name, ndev->board->slot);
 373                                 offset = mac8390_memsize(dev->mem_start);
 374                                 } else {
 375                                         nubus_get_rsrc_mem(&offset, &ent, 4);
 376                                 }
 377                         dev->mem_end = dev->mem_start + offset;
 378                 } else {
 379                         switch (cardtype) {
 380                                 case MAC8390_KINETICS:
 381                                 case MAC8390_DAYNA: /* it's the same */
 382                                         dev->base_addr =
 383                                                 (int)(ndev->board->slot_addr +
 384                                                 DAYNA_8390_BASE);
 385                                         dev->mem_start =
 386                                                 (int)(ndev->board->slot_addr +
 387                                                 DAYNA_8390_MEM);
 388                                         dev->mem_end =
 389                                                 dev->mem_start +
 390                                                 mac8390_memsize(dev->mem_start);
 391                                         break;
 392                                 case MAC8390_INTERLAN:
 393                                         dev->base_addr =
 394                                                 (int)(ndev->board->slot_addr +
 395                                                 INTERLAN_8390_BASE);
 396                                         dev->mem_start =
 397                                                 (int)(ndev->board->slot_addr +
 398                                                 INTERLAN_8390_MEM);
 399                                         dev->mem_end =
 400                                                 dev->mem_start +
 401                                                 mac8390_memsize(dev->mem_start);
 402                                         break;
 403                                 case MAC8390_CABLETRON:
 404                                         dev->base_addr =
 405                                                 (int)(ndev->board->slot_addr +
 406                                                 CABLETRON_8390_BASE);
 407                                         dev->mem_start =
 408                                                 (int)(ndev->board->slot_addr +
 409                                                 CABLETRON_8390_MEM);
 410                                         /* The base address is unreadable if 0x00
 411                                          * has been written to the command register
 412                                          * Reset the chip by writing E8390_NODMA +
 413                                          *   E8390_PAGE0 + E8390_STOP just to be
 414                                          *   sure
 415                                          */
 416                                         i = (void *)dev->base_addr;
 417                                         *i = 0x21;
 418                                         dev->mem_end =
 419                                                 dev->mem_start +
 420                                                 mac8390_memsize(dev->mem_start);
 421                                         break;
 422
 423                                 default:
 424                                         printk(KERN_ERR "Card type %s is"
 425                                                " unsupported, sorry\n",
 426                                                ndev->board->name);
 427                                         continue;
 428                         }
 429                 }
 430
 431                 /* Do the nasty 8390 stuff */
 432                 if (!mac8390_initdev(dev, ndev, cardtype))
 433                         break;
 434         }
 435
 436         if (!ndev)
 437                 goto out;
 438         err = register_netdev(dev);
 439         if (err)
 440                 goto out;
 441         return dev;
 442
 443 out:
 444         free_netdev(dev);
 445         return ERR_PTR(err);
 446 }
 447
 448 #ifdef MODULE
 449 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 450 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 451 MODULE_LICENSE("GPL");
 452
 453 /* overkill, of course */
 454 static struct net_device *dev_mac8390[15];
 455 int init_module(void)
 456 {
 457         int i;
 458         for (i = 0; i < 15; i++) {
 459                 struct net_device *dev = mac8390_probe(-1);
 460                 if (IS_ERR(dev))
 461                         break;
 462                 dev_mac890[i] = dev;
 463         }
 464         if (!i) {
 465                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
 466                 return -ENODEV;
 467         }
 468         return 0;
 469 }
 470
 471 void cleanup_module(void)
 472 {
 473         int i;
 474         for (i = 0; i < 15; i++) {
 475                 struct net_device *dev = dev_mac890[i];
 476                 if (dev) {
 477                         unregister_netdev(dev);
 478                         free_netdev(dev);
 479                 }
 480         }
 481 }
 482
 483 #endif /* MODULE */
 484
 485 static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
 486                             enum mac8390_type type)
 487 {
 488         static u32 fwrd4_offsets[16]={
 489                 0,      4,      8,      12,
 490                 16,     20,     24,     28,
 491                 32,     36,     40,     44,
 492                 48,     52,     56,     60
 493         };
 494         static u32 back4_offsets[16]={
 495                 60,     56,     52,     48,
 496                 44,     40,     36,     32,
 497                 28,     24,     20,     16,
 498                 12,     8,      4,      0
 499         };
 500         static u32 fwrd2_offsets[16]={
 501                 0,      2,      4,      6,
 502                 8,     10,     12,     14,
 503                 16,    18,     20,     22,
 504                 24,    26,     28,     30
 505         };
 506
 507         int access_bitmode = 0;
 508
 509         /* Now fill in our stuff */
 510         dev->open = &mac8390_open;
 511         dev->stop = &mac8390_close;
 512 #ifdef CONFIG_NET_POLL_CONTROLLER
 513         dev->poll_controller = __ei_poll;
 514 #endif
 515
 516         /* GAR, ei_status is actually a macro even though it looks global */
 517         ei_status.name = cardname[type];
 518         ei_status.word16 = word16[type];
 519
 520         /* Cabletron's TX/RX buffers are backwards */
 521         if (type == MAC8390_CABLETRON) {
 522                ei_status.tx_start_page = CABLETRON_TX_START_PG;
 523                ei_status.rx_start_page = CABLETRON_RX_START_PG;
 524                ei_status.stop_page = CABLETRON_RX_STOP_PG;
 525                ei_status.rmem_start = dev->mem_start;
 526                ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 527         } else {
 528                ei_status.tx_start_page = WD_START_PG;
 529                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 530                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 531                ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
 532                ei_status.rmem_end = dev->mem_end;
 533         }
 534
 535         /* Fill in model-specific information and functions */
 536         switch(type) {
 537         case MAC8390_FARALLON:
 538         case MAC8390_APPLE:
 539                 switch(mac8390_testio(dev->mem_start)) {
 540                         case ACCESS_UNKNOWN:
 541                                 printk("Don't know how to access card memory!\n");
 542                                 return -ENODEV;
 543                                 break;
 544
 545                         case ACCESS_16:
 546                                 /* 16 bit card, register map is reversed */
 547                                 ei_status.reset_8390 = &mac8390_no_reset;
 548                                 ei_status.block_input = &slow_sane_block_input;
 549                                 ei_status.block_output = &slow_sane_block_output;
 550                                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 551                                 ei_status.reg_offset = back4_offsets;
 552                                 break;
 553
 554                         case ACCESS_32:
 555                                 /* 32 bit card, register map is reversed */
 556                                 ei_status.reset_8390 = &mac8390_no_reset;
 557                                 ei_status.block_input = &sane_block_input;
 558                                 ei_status.block_output = &sane_block_output;
 559                                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
 560                                 ei_status.reg_offset = back4_offsets;
 561                                 access_bitmode = 1;
 562                                 break;
 563                 }
 564                 break;
 565
 566         case MAC8390_ASANTE:
 567                 /* Some Asante cards pass the 32 bit test
 568                  * but overwrite system memory when run at 32 bit.
 569                  * so we run them all at 16 bit.
 570                  */
 571                 ei_status.reset_8390 = &mac8390_no_reset;
 572                 ei_status.block_input = &slow_sane_block_input;
 573                 ei_status.block_output = &slow_sane_block_output;
 574                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 575                 ei_status.reg_offset = back4_offsets;
 576                 break;
 577
 578         case MAC8390_CABLETRON:
 579                 /* 16 bit card, register map is short forward */
 580                 ei_status.reset_8390 = &mac8390_no_reset;
 581                 ei_status.block_input = &slow_sane_block_input;
 582                 ei_status.block_output = &slow_sane_block_output;
 583                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 584                 ei_status.reg_offset = fwrd2_offsets;
 585                 break;
 586
 587         case MAC8390_DAYNA:
 588         case MAC8390_KINETICS:
 589                 /* 16 bit memory, register map is forward */
 590                 /* dayna and similar */
 591                 ei_status.reset_8390 = &mac8390_no_reset;
 592                 ei_status.block_input = &dayna_block_input;
 593                 ei_status.block_output = &dayna_block_output;
 594                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
 595                 ei_status.reg_offset = fwrd4_offsets;
 596                 break;
 597
 598         case MAC8390_INTERLAN:
 599                 /* 16 bit memory, register map is forward */
 600                 ei_status.reset_8390 = &interlan_reset;
 601                 ei_status.block_input = &slow_sane_block_input;
 602                 ei_status.block_output = &slow_sane_block_output;
 603                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
 604                 ei_status.reg_offset = fwrd4_offsets;
 605                 break;
 606
 607         default:
 608                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", ndev->board->name);
 609                 return -ENODEV;
 610         }
 611
 612         __NS8390_init(dev, 0);
 613
 614         /* Good, done, now spit out some messages */
 615         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
 616                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
 617         printk(KERN_INFO "MAC ");
 618         {
 619                 int i;
 620                 for (i = 0; i < 6; i++) {
 621                         printk("%2.2x", dev->dev_addr[i]);
 622                         if (i < 5)
 623                                 printk(":");
 624                 }
 625         }
 626         printk(" IRQ %d, %d KB shared memory at %#lx,  %d-bit access.\n",
 627                    dev->irq, (int)((dev->mem_end - dev->mem_start)/0x1000) * 4,
 628                    dev->mem_start, access_bitmode?32:16);
 629         return 0;
 630 }
 631
 632 static int mac8390_open(struct net_device *dev)
 633 {
 634         __ei_open(dev);
 635         if (request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev)) {
 636                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
 637                 return -EAGAIN;
 638         }
 639         return 0;
 640 }
 641
 642 static int mac8390_close(struct net_device *dev)
 643 {
 644         free_irq(dev->irq, dev);
 645         __ei_close(dev);
 646         return 0;
 647 }
 648
 649 static void mac8390_no_reset(struct net_device *dev)
 650 {
 651         ei_status.txing = 0;
 652         if (ei_debug > 1)
 653                 printk("reset not supported\n");
 654         return;
 655 }
 656
 657 static void interlan_reset(struct net_device *dev)
 658 {
 659         unsigned char *target=nubus_slot_addr(IRQ2SLOT(dev->irq));
 660         if (ei_debug > 1)
 661                 printk("Need to reset the NS8390 t=%lu...", jiffies);
 662         ei_status.txing = 0;
 663         target[0xC0000] = 0;
 664         if (ei_debug > 1)
 665                 printk("reset complete\n");
 666         return;
 667 }
 668
 669 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 670 /* directly from daynaport.c by Alan Cox */
 671 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
 672 {
 673         volatile unsigned char *ptr;
 674         unsigned char *target=to;
 675         from<<=1;       /* word, skip overhead */
 676         ptr=(unsigned char *)(dev->mem_start+from);
 677         /* Leading byte? */
 678         if (from&2) {
 679                 *target++ = ptr[-1];
 680                 ptr += 2;
 681                 count--;
 682         }
 683         while(count>=2)
 684         {
 685                 *(unsigned short *)target = *(unsigned short volatile *)ptr;
 686                 ptr += 4;                       /* skip cruft */
 687                 target += 2;
 688                 count-=2;
 689         }
 690         /* Trailing byte? */
 691         if(count)
 692                 *target = *ptr;
 693 }
 694
 695 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
 696 {
 697         volatile unsigned short *ptr;
 698         const unsigned char *src=from;
 699         to<<=1; /* word, skip overhead */
 700         ptr=(unsigned short *)(dev->mem_start+to);
 701         /* Leading byte? */
 702         if (to&2) { /* avoid a byte write (stomps on other data) */
 703                 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
 704                 ptr++;
 705                 count--;
 706         }
 707         while(count>=2)
 708         {
 709                 *ptr++=*(unsigned short *)src;          /* Copy and */
 710                 ptr++;                  /* skip cruft */
 711                 src += 2;
 712                 count-=2;
 713         }
 714         /* Trailing byte? */
 715         if(count)
 716         {
 717                 /* card doesn't like byte writes */
 718                 *ptr=(*ptr&0x00FF)|(*src << 8);
 719         }
 720 }
 721
 722 /* sane block input/output */
 723 static void sane_get_8390_hdr(struct net_device *dev,
 724                               struct e8390_pkt_hdr *hdr, int ring_page)
 725 {
 726         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 727         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
 728         /* Fix endianness */
 729         hdr->count = swab16(hdr->count);
 730 }
 731
 732 static void sane_block_input(struct net_device *dev, int count,
 733                              struct sk_buff *skb, int ring_offset)
 734 {
 735         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 736         unsigned long xfer_start = xfer_base + dev->mem_start;
 737
 738         if (xfer_start + count > ei_status.rmem_end) {
 739                 /* We must wrap the input move. */
 740                 int semi_count = ei_status.rmem_end - xfer_start;
 741                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
 742                 count -= semi_count;
 743                 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
 744         } else {
 745                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
 746         }
 747 }
 748
 749 static void sane_block_output(struct net_device *dev, int count,
 750                               const unsigned char *buf, int start_page)
 751 {
 752         long shmem = (start_page - WD_START_PG)<<8;
 753
 754         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
 755 }
 756
 757 /* dayna block input/output */
 758 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
 759 {
 760         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 761
 762         dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
 763         /* Fix endianness */
 764         hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
 765 }
 766
 767 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
 768 {
 769         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 770         unsigned long xfer_start = xfer_base+dev->mem_start;
 771
 772         /* Note the offset math is done in card memory space which is word
 773            per long onto our space. */
 774
 775         if (xfer_start + count > ei_status.rmem_end)
 776         {
 777                 /* We must wrap the input move. */
 778                 int semi_count = ei_status.rmem_end - xfer_start;
 779                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 780                 count -= semi_count;
 781                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 782                                       ei_status.rmem_start - dev->mem_start,
 783                                       count);
 784         }
 785         else
 786         {
 787                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 788         }
 789 }
 790
 791 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
 792                                 int start_page)
 793 {
 794         long shmem = (start_page - WD_START_PG)<<8;
 795
 796         dayna_memcpy_tocard(dev, shmem, buf, count);
 797 }
 798
 799 /* Cabletron block I/O */
 800 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
 801         int ring_page)
 802 {
 803         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 804         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
 805         /* Register endianism - fix here rather than 8390.c */
 806         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 807 }
 808
 809 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
 810         int ring_offset)
 811 {
 812         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 813         unsigned long xfer_start = xfer_base+dev->mem_start;
 814
 815         if (xfer_start + count > ei_status.rmem_end)
 816         {
 817                 /* We must wrap the input move. */
 818                 int semi_count = ei_status.rmem_end - xfer_start;
 819                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 820                         xfer_base, semi_count);
 821                 count -= semi_count;
 822                 word_memcpy_fromcard(skb->data + semi_count,
 823                                      (char *)ei_status.rmem_start, count);
 824         }
 825         else
 826         {
 827                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
 828                         xfer_base, count);
 829         }
 830 }
 831
 832 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
 833         int start_page)
 834 {
 835         long shmem = (start_page - WD_START_PG)<<8;
 836
 837         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
 838 }
 839
 840 static void word_memcpy_tocard(void *tp, const void *fp, int count)
 841 {
 842         volatile unsigned short *to = tp;
 843         const unsigned short *from = fp;
 844
 845         count++;
 846         count/=2;
 847
 848         while(count--)
 849                 *to++=*from++;
 850 }
 851
 852 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
 853 {
 854         unsigned short *to = tp;
 855         const volatile unsigned short *from = fp;
 856
 857         count++;
 858         count/=2;
 859
 860         while(count--)
 861                 *to++=*from++;
 862 }
 863
 864