drivers/net/ethernet/8390/mac8390.c

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This source file includes following definitions.
mac8390_ident
mac8390_testio
mac8390_memsize
mac8390_rsrc_init
mac8390_device_probe
mac8390_device_remove
mac8390_init
mac8390_exit
mac8390_initdev
mac8390_open
mac8390_close
mac8390_no_reset
interlan_reset
dayna_memcpy_fromcard
dayna_memcpy_tocard
sane_get_8390_hdr
sane_block_input
sane_block_output
dayna_get_8390_hdr
dayna_block_input
dayna_block_output
slow_sane_get_8390_hdr
slow_sane_block_input
slow_sane_block_output
word_memcpy_tocard
word_memcpy_fromcard
   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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  21 
  22 #include <linux/module.h>
  23 #include <linux/kernel.h>
  24 #include <linux/types.h>
  25 #include <linux/fcntl.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/ptrace.h>
  28 #include <linux/ioport.h>
  29 #include <linux/nubus.h>
  30 #include <linux/in.h>
  31 #include <linux/string.h>
  32 #include <linux/errno.h>
  33 #include <linux/init.h>
  34 #include <linux/netdevice.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/bitops.h>
  38 #include <linux/io.h>
  39 
  40 #include <asm/dma.h>
  41 #include <asm/hwtest.h>
  42 #include <asm/macints.h>
  43 
  44 static char version[] =
  45         "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
  59                                                 /* First page of TX buffer */
  60 
  61 /*
  62  * Unfortunately it seems we have to hardcode these for the moment
  63  * Shouldn't the card know about this?
  64  * Does anyone know where to read it off the card?
  65  * Do we trust the data provided by the card?
  66  */
  67 
  68 #define DAYNA_8390_BASE         0x80000
  69 #define DAYNA_8390_MEM          0x00000
  70 
  71 #define CABLETRON_8390_BASE     0x90000
  72 #define CABLETRON_8390_MEM      0x00000
  73 
  74 #define INTERLAN_8390_BASE      0xE0000
  75 #define INTERLAN_8390_MEM       0xD0000
  76 
  77 enum mac8390_type {
  78         MAC8390_NONE = -1,
  79         MAC8390_APPLE,
  80         MAC8390_ASANTE,
  81         MAC8390_FARALLON,
  82         MAC8390_CABLETRON,
  83         MAC8390_DAYNA,
  84         MAC8390_INTERLAN,
  85         MAC8390_KINETICS,
  86 };
  87 
  88 static const char *cardname[] = {
  89         "apple",
  90         "asante",
  91         "farallon",
  92         "cabletron",
  93         "dayna",
  94         "interlan",
  95         "kinetics",
  96 };
  97 
  98 static const int word16[] = {
  99         1, /* apple */
 100         1, /* asante */
 101         1, /* farallon */
 102         1, /* cabletron */
 103         0, /* dayna */
 104         1, /* interlan */
 105         0, /* kinetics */
 106 };
 107 
 108 /* on which cards do we use NuBus resources? */
 109 static const int useresources[] = {
 110         1, /* apple */
 111         1, /* asante */
 112         1, /* farallon */
 113         0, /* cabletron */
 114         0, /* dayna */
 115         0, /* interlan */
 116         0, /* kinetics */
 117 };
 118 
 119 enum mac8390_access {
 120         ACCESS_UNKNOWN = 0,
 121         ACCESS_32,
 122         ACCESS_16,
 123 };
 124 
 125 extern int mac8390_memtest(struct net_device *dev);
 126 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board,
 127                            enum mac8390_type type);
 128 
 129 static int mac8390_open(struct net_device *dev);
 130 static int mac8390_close(struct net_device *dev);
 131 static void mac8390_no_reset(struct net_device *dev);
 132 static void interlan_reset(struct net_device *dev);
 133 
 134 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/
 135 static void sane_get_8390_hdr(struct net_device *dev,
 136                               struct e8390_pkt_hdr *hdr, int ring_page);
 137 static void sane_block_input(struct net_device *dev, int count,
 138                              struct sk_buff *skb, int ring_offset);
 139 static void sane_block_output(struct net_device *dev, int count,
 140                               const unsigned char *buf, const int start_page);
 141 
 142 /* dayna_memcpy to and from card */
 143 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
 144                                 int from, int count);
 145 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 146                               const void *from, int count);
 147 
 148 /* Dayna - Dayna/Kinetics use this */
 149 static void dayna_get_8390_hdr(struct net_device *dev,
 150                                struct e8390_pkt_hdr *hdr, int ring_page);
 151 static void dayna_block_input(struct net_device *dev, int count,
 152                               struct sk_buff *skb, int ring_offset);
 153 static void dayna_block_output(struct net_device *dev, int count,
 154                                const unsigned char *buf, int start_page);
 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(unsigned long tp, const void *fp, int count);
 164 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count);
 165 
 166 static enum mac8390_type mac8390_ident(struct nubus_rsrc *fres)
 167 {
 168         switch (fres->dr_sw) {
 169         case NUBUS_DRSW_3COM:
 170                 switch (fres->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                 default:
 176                         return MAC8390_APPLE;
 177                 }
 178                 break;
 179 
 180         case NUBUS_DRSW_APPLE:
 181                 switch (fres->dr_hw) {
 182                 case NUBUS_DRHW_ASANTE_LC:
 183                         return MAC8390_NONE;
 184                 case NUBUS_DRHW_CABLETRON:
 185                         return MAC8390_CABLETRON;
 186                 default:
 187                         return MAC8390_APPLE;
 188                 }
 189                 break;
 190 
 191         case NUBUS_DRSW_ASANTE:
 192                 return MAC8390_ASANTE;
 193                 break;
 194 
 195         case NUBUS_DRSW_TECHWORKS:
 196         case NUBUS_DRSW_DAYNA2:
 197         case NUBUS_DRSW_DAYNA_LC:
 198                 if (fres->dr_hw == NUBUS_DRHW_CABLETRON)
 199                         return MAC8390_CABLETRON;
 200                 else
 201                         return MAC8390_APPLE;
 202                 break;
 203 
 204         case NUBUS_DRSW_FARALLON:
 205                 return MAC8390_FARALLON;
 206                 break;
 207 
 208         case NUBUS_DRSW_KINETICS:
 209                 switch (fres->dr_hw) {
 210                 case NUBUS_DRHW_INTERLAN:
 211                         return MAC8390_INTERLAN;
 212                 default:
 213                         return MAC8390_KINETICS;
 214                 }
 215                 break;
 216 
 217         case NUBUS_DRSW_DAYNA:
 218                 /*
 219                  * These correspond to Dayna Sonic cards
 220                  * which use the macsonic driver
 221                  */
 222                 if (fres->dr_hw == NUBUS_DRHW_SMC9194 ||
 223                     fres->dr_hw == NUBUS_DRHW_INTERLAN)
 224                         return MAC8390_NONE;
 225                 else
 226                         return MAC8390_DAYNA;
 227                 break;
 228         }
 229         return MAC8390_NONE;
 230 }
 231 
 232 static enum mac8390_access mac8390_testio(unsigned long membase)
 233 {
 234         u32 outdata = 0xA5A0B5B0;
 235         u32 indata = 0;
 236 
 237         /* Try writing 32 bits */
 238         nubus_writel(outdata, membase);
 239         /* Now read it back */
 240         indata = nubus_readl(membase);
 241         if (outdata == indata)
 242                 return ACCESS_32;
 243 
 244         outdata = 0xC5C0D5D0;
 245         indata = 0;
 246 
 247         /* Write 16 bit output */
 248         word_memcpy_tocard(membase, &outdata, 4);
 249         /* Now read it back */
 250         word_memcpy_fromcard(&indata, membase, 4);
 251         if (outdata == indata)
 252                 return ACCESS_16;
 253 
 254         return ACCESS_UNKNOWN;
 255 }
 256 
 257 static int mac8390_memsize(unsigned long membase)
 258 {
 259         unsigned long flags;
 260         int i, j;
 261 
 262         local_irq_save(flags);
 263         /* Check up to 32K in 4K increments */
 264         for (i = 0; i < 8; i++) {
 265                 volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000));
 266 
 267                 /* Unwriteable - we have a fully decoded card and the
 268                    RAM end located */
 269                 if (hwreg_present(m) == 0)
 270                         break;
 271 
 272                 /* write a distinctive byte */
 273                 *m = 0xA5A0 | i;
 274                 /* check that we read back what we wrote */
 275                 if (*m != (0xA5A0 | i))
 276                         break;
 277 
 278                 /* check for partial decode and wrap */
 279                 for (j = 0; j < i; j++) {
 280                         volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000));
 281                         if (*p != (0xA5A0 | j))
 282                                 break;
 283                 }
 284         }
 285         local_irq_restore(flags);
 286         /*
 287          * in any case, we stopped once we tried one block too many,
 288          * or once we reached 32K
 289          */
 290         return i * 0x1000;
 291 }
 292 
 293 static bool mac8390_rsrc_init(struct net_device *dev,
 294                               struct nubus_rsrc *fres,
 295                               enum mac8390_type cardtype)
 296 {
 297         struct nubus_board *board = fres->board;
 298         struct nubus_dir dir;
 299         struct nubus_dirent ent;
 300         int offset;
 301         volatile unsigned short *i;
 302 
 303         dev->irq = SLOT2IRQ(board->slot);
 304         /* This is getting to be a habit */
 305         dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20);
 306 
 307         /*
 308          * Get some Nubus info - we will trust the card's idea
 309          * of where its memory and registers are.
 310          */
 311 
 312         if (nubus_get_func_dir(fres, &dir) == -1) {
 313                 dev_err(&board->dev,
 314                         "Unable to get Nubus functional directory\n");
 315                 return false;
 316         }
 317 
 318         /* Get the MAC address */
 319         if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
 320                 dev_info(&board->dev, "MAC address resource not found\n");
 321                 return false;
 322         }
 323 
 324         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
 325 
 326         if (useresources[cardtype] == 1) {
 327                 nubus_rewinddir(&dir);
 328                 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS,
 329                                     &ent) == -1) {
 330                         dev_err(&board->dev,
 331                                 "Memory offset resource not found\n");
 332                         return false;
 333                 }
 334                 nubus_get_rsrc_mem(&offset, &ent, 4);
 335                 dev->mem_start = dev->base_addr + offset;
 336                 /* yes, this is how the Apple driver does it */
 337                 dev->base_addr = dev->mem_start + 0x10000;
 338                 nubus_rewinddir(&dir);
 339                 if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH,
 340                                     &ent) == -1) {
 341                         dev_info(&board->dev,
 342                                  "Memory length resource not found, probing\n");
 343                         offset = mac8390_memsize(dev->mem_start);
 344                 } else {
 345                         nubus_get_rsrc_mem(&offset, &ent, 4);
 346                 }
 347                 dev->mem_end = dev->mem_start + offset;
 348         } else {
 349                 switch (cardtype) {
 350                 case MAC8390_KINETICS:
 351                 case MAC8390_DAYNA: /* it's the same */
 352                         dev->base_addr = (int)(board->slot_addr +
 353                                                DAYNA_8390_BASE);
 354                         dev->mem_start = (int)(board->slot_addr +
 355                                                DAYNA_8390_MEM);
 356                         dev->mem_end = dev->mem_start +
 357                                        mac8390_memsize(dev->mem_start);
 358                         break;
 359                 case MAC8390_INTERLAN:
 360                         dev->base_addr = (int)(board->slot_addr +
 361                                                INTERLAN_8390_BASE);
 362                         dev->mem_start = (int)(board->slot_addr +
 363                                                INTERLAN_8390_MEM);
 364                         dev->mem_end = dev->mem_start +
 365                                        mac8390_memsize(dev->mem_start);
 366                         break;
 367                 case MAC8390_CABLETRON:
 368                         dev->base_addr = (int)(board->slot_addr +
 369                                                CABLETRON_8390_BASE);
 370                         dev->mem_start = (int)(board->slot_addr +
 371                                                CABLETRON_8390_MEM);
 372                         /* The base address is unreadable if 0x00
 373                          * has been written to the command register
 374                          * Reset the chip by writing E8390_NODMA +
 375                          *   E8390_PAGE0 + E8390_STOP just to be
 376                          *   sure
 377                          */
 378                         i = (void *)dev->base_addr;
 379                         *i = 0x21;
 380                         dev->mem_end = dev->mem_start +
 381                                        mac8390_memsize(dev->mem_start);
 382                         break;
 383 
 384                 default:
 385                         dev_err(&board->dev,
 386                                 "No known base address for card type\n");
 387                         return false;
 388                 }
 389         }
 390 
 391         return true;
 392 }
 393 
 394 static int mac8390_device_probe(struct nubus_board *board)
 395 {
 396         struct net_device *dev;
 397         int err = -ENODEV;
 398         struct nubus_rsrc *fres;
 399         enum mac8390_type cardtype = MAC8390_NONE;
 400 
 401         dev = ____alloc_ei_netdev(0);
 402         if (!dev)
 403                 return -ENOMEM;
 404 
 405         SET_NETDEV_DEV(dev, &board->dev);
 406 
 407         for_each_board_func_rsrc(board, fres) {
 408                 if (fres->category != NUBUS_CAT_NETWORK ||
 409                     fres->type != NUBUS_TYPE_ETHERNET)
 410                         continue;
 411 
 412                 cardtype = mac8390_ident(fres);
 413                 if (cardtype == MAC8390_NONE)
 414                         continue;
 415 
 416                 if (mac8390_rsrc_init(dev, fres, cardtype))
 417                         break;
 418         }
 419         if (!fres)
 420                 goto out;
 421 
 422         err = mac8390_initdev(dev, board, cardtype);
 423         if (err)
 424                 goto out;
 425 
 426         err = register_netdev(dev);
 427         if (err)
 428                 goto out;
 429 
 430         nubus_set_drvdata(board, dev);
 431         return 0;
 432 
 433 out:
 434         free_netdev(dev);
 435         return err;
 436 }
 437 
 438 static int mac8390_device_remove(struct nubus_board *board)
 439 {
 440         struct net_device *dev = nubus_get_drvdata(board);
 441 
 442         unregister_netdev(dev);
 443         free_netdev(dev);
 444         return 0;
 445 }
 446 
 447 static struct nubus_driver mac8390_driver = {
 448         .probe = mac8390_device_probe,
 449         .remove = mac8390_device_remove,
 450         .driver = {
 451                 .name = KBUILD_MODNAME,
 452                 .owner = THIS_MODULE,
 453         }
 454 };
 455 
 456 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
 457 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
 458 MODULE_LICENSE("GPL");
 459 
 460 static int __init mac8390_init(void)
 461 {
 462         return nubus_driver_register(&mac8390_driver);
 463 }
 464 module_init(mac8390_init);
 465 
 466 static void __exit mac8390_exit(void)
 467 {
 468         nubus_driver_unregister(&mac8390_driver);
 469 }
 470 module_exit(mac8390_exit);
 471 
 472 static const struct net_device_ops mac8390_netdev_ops = {
 473         .ndo_open               = mac8390_open,
 474         .ndo_stop               = mac8390_close,
 475         .ndo_start_xmit         = __ei_start_xmit,
 476         .ndo_tx_timeout         = __ei_tx_timeout,
 477         .ndo_get_stats          = __ei_get_stats,
 478         .ndo_set_rx_mode        = __ei_set_multicast_list,
 479         .ndo_validate_addr      = eth_validate_addr,
 480         .ndo_set_mac_address    = eth_mac_addr,
 481 #ifdef CONFIG_NET_POLL_CONTROLLER
 482         .ndo_poll_controller    = __ei_poll,
 483 #endif
 484 };
 485 
 486 static int mac8390_initdev(struct net_device *dev, struct nubus_board *board,
 487                            enum mac8390_type type)
 488 {
 489         static u32 fwrd4_offsets[16] = {
 490                 0,      4,      8,      12,
 491                 16,     20,     24,     28,
 492                 32,     36,     40,     44,
 493                 48,     52,     56,     60
 494         };
 495         static u32 back4_offsets[16] = {
 496                 60,     56,     52,     48,
 497                 44,     40,     36,     32,
 498                 28,     24,     20,     16,
 499                 12,     8,      4,      0
 500         };
 501         static u32 fwrd2_offsets[16] = {
 502                 0,      2,      4,      6,
 503                 8,     10,     12,     14,
 504                 16,    18,     20,     22,
 505                 24,    26,     28,     30
 506         };
 507 
 508         int access_bitmode = 0;
 509 
 510         /* Now fill in our stuff */
 511         dev->netdev_ops = &mac8390_netdev_ops;
 512 
 513         /* GAR, ei_status is actually a macro even though it looks global */
 514         ei_status.name = cardname[type];
 515         ei_status.word16 = word16[type];
 516 
 517         /* Cabletron's TX/RX buffers are backwards */
 518         if (type == MAC8390_CABLETRON) {
 519                 ei_status.tx_start_page = CABLETRON_TX_START_PG;
 520                 ei_status.rx_start_page = CABLETRON_RX_START_PG;
 521                 ei_status.stop_page = CABLETRON_RX_STOP_PG;
 522                 ei_status.rmem_start = dev->mem_start;
 523                 ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
 524         } else {
 525                 ei_status.tx_start_page = WD_START_PG;
 526                 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
 527                 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
 528                 ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
 529                 ei_status.rmem_end = dev->mem_end;
 530         }
 531 
 532         /* Fill in model-specific information and functions */
 533         switch (type) {
 534         case MAC8390_FARALLON:
 535         case MAC8390_APPLE:
 536                 switch (mac8390_testio(dev->mem_start)) {
 537                 case ACCESS_UNKNOWN:
 538                         dev_err(&board->dev,
 539                                 "Don't know how to access card memory\n");
 540                         return -ENODEV;
 541 
 542                 case ACCESS_16:
 543                         /* 16 bit card, register map is reversed */
 544                         ei_status.reset_8390 = mac8390_no_reset;
 545                         ei_status.block_input = slow_sane_block_input;
 546                         ei_status.block_output = slow_sane_block_output;
 547                         ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
 548                         ei_status.reg_offset = back4_offsets;
 549                         break;
 550 
 551                 case ACCESS_32:
 552                         /* 32 bit card, register map is reversed */
 553                         ei_status.reset_8390 = mac8390_no_reset;
 554                         ei_status.block_input = sane_block_input;
 555                         ei_status.block_output = sane_block_output;
 556                         ei_status.get_8390_hdr = sane_get_8390_hdr;
 557                         ei_status.reg_offset = back4_offsets;
 558                         access_bitmode = 1;
 559                         break;
 560                 }
 561                 break;
 562 
 563         case MAC8390_ASANTE:
 564                 /* Some Asante cards pass the 32 bit test
 565                  * but overwrite system memory when run at 32 bit.
 566                  * so we run them all at 16 bit.
 567                  */
 568                 ei_status.reset_8390 = mac8390_no_reset;
 569                 ei_status.block_input = slow_sane_block_input;
 570                 ei_status.block_output = slow_sane_block_output;
 571                 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
 572                 ei_status.reg_offset = back4_offsets;
 573                 break;
 574 
 575         case MAC8390_CABLETRON:
 576                 /* 16 bit card, register map is short forward */
 577                 ei_status.reset_8390 = mac8390_no_reset;
 578                 ei_status.block_input = slow_sane_block_input;
 579                 ei_status.block_output = slow_sane_block_output;
 580                 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
 581                 ei_status.reg_offset = fwrd2_offsets;
 582                 break;
 583 
 584         case MAC8390_DAYNA:
 585         case MAC8390_KINETICS:
 586                 /* 16 bit memory, register map is forward */
 587                 /* dayna and similar */
 588                 ei_status.reset_8390 = mac8390_no_reset;
 589                 ei_status.block_input = dayna_block_input;
 590                 ei_status.block_output = dayna_block_output;
 591                 ei_status.get_8390_hdr = dayna_get_8390_hdr;
 592                 ei_status.reg_offset = fwrd4_offsets;
 593                 break;
 594 
 595         case MAC8390_INTERLAN:
 596                 /* 16 bit memory, register map is forward */
 597                 ei_status.reset_8390 = interlan_reset;
 598                 ei_status.block_input = slow_sane_block_input;
 599                 ei_status.block_output = slow_sane_block_output;
 600                 ei_status.get_8390_hdr = slow_sane_get_8390_hdr;
 601                 ei_status.reg_offset = fwrd4_offsets;
 602                 break;
 603 
 604         default:
 605                 dev_err(&board->dev, "Unsupported card type\n");
 606                 return -ENODEV;
 607         }
 608 
 609         __NS8390_init(dev, 0);
 610 
 611         /* Good, done, now spit out some messages */
 612         dev_info(&board->dev, "%s (type %s)\n", board->name, cardname[type]);
 613         dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
 614                  dev->dev_addr, dev->irq,
 615                  (unsigned int)(dev->mem_end - dev->mem_start) >> 10,
 616                  dev->mem_start, access_bitmode ? 32 : 16);
 617         return 0;
 618 }
 619 
 620 static int mac8390_open(struct net_device *dev)
 621 {
 622         int err;
 623 
 624         __ei_open(dev);
 625         err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev);
 626         if (err)
 627                 pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq);
 628         return err;
 629 }
 630 
 631 static int mac8390_close(struct net_device *dev)
 632 {
 633         free_irq(dev->irq, dev);
 634         __ei_close(dev);
 635         return 0;
 636 }
 637 
 638 static void mac8390_no_reset(struct net_device *dev)
 639 {
 640         struct ei_device *ei_local = netdev_priv(dev);
 641 
 642         ei_status.txing = 0;
 643         netif_info(ei_local, hw, dev, "reset not supported\n");
 644 }
 645 
 646 static void interlan_reset(struct net_device *dev)
 647 {
 648         unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
 649         struct ei_device *ei_local = netdev_priv(dev);
 650 
 651         netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu...",
 652                    jiffies);
 653         ei_status.txing = 0;
 654         target[0xC0000] = 0;
 655         if (netif_msg_hw(ei_local))
 656                 pr_cont("reset complete\n");
 657 }
 658 
 659 /* dayna_memcpy_fromio/dayna_memcpy_toio */
 660 /* directly from daynaport.c by Alan Cox */
 661 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from,
 662                                   int count)
 663 {
 664         volatile unsigned char *ptr;
 665         unsigned char *target = to;
 666         from <<= 1;     /* word, skip overhead */
 667         ptr = (unsigned char *)(dev->mem_start+from);
 668         /* Leading byte? */
 669         if (from & 2) {
 670                 *target++ = ptr[-1];
 671                 ptr += 2;
 672                 count--;
 673         }
 674         while (count >= 2) {
 675                 *(unsigned short *)target = *(unsigned short volatile *)ptr;
 676                 ptr += 4;                       /* skip cruft */
 677                 target += 2;
 678                 count -= 2;
 679         }
 680         /* Trailing byte? */
 681         if (count)
 682                 *target = *ptr;
 683 }
 684 
 685 static void dayna_memcpy_tocard(struct net_device *dev, int to,
 686                                 const void *from, int count)
 687 {
 688         volatile unsigned short *ptr;
 689         const unsigned char *src = from;
 690         to <<= 1;       /* word, skip overhead */
 691         ptr = (unsigned short *)(dev->mem_start+to);
 692         /* Leading byte? */
 693         if (to & 2) {           /* avoid a byte write (stomps on other data) */
 694                 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
 695                 ptr++;
 696                 count--;
 697         }
 698         while (count >= 2) {
 699                 *ptr++ = *(unsigned short *)src;        /* Copy and */
 700                 ptr++;                  /* skip cruft */
 701                 src += 2;
 702                 count -= 2;
 703         }
 704         /* Trailing byte? */
 705         if (count) {
 706                 /* card doesn't like byte writes */
 707                 *ptr = (*ptr & 0x00FF) | (*src << 8);
 708         }
 709 }
 710 
 711 /* sane block input/output */
 712 static void sane_get_8390_hdr(struct net_device *dev,
 713                               struct e8390_pkt_hdr *hdr, int ring_page)
 714 {
 715         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 716         memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4);
 717         /* Fix endianness */
 718         hdr->count = swab16(hdr->count);
 719 }
 720 
 721 static void sane_block_input(struct net_device *dev, int count,
 722                              struct sk_buff *skb, int ring_offset)
 723 {
 724         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 725         unsigned long xfer_start = xfer_base + dev->mem_start;
 726 
 727         if (xfer_start + count > ei_status.rmem_end) {
 728                 /* We must wrap the input move. */
 729                 int semi_count = ei_status.rmem_end - xfer_start;
 730                 memcpy_fromio(skb->data,
 731                               (void __iomem *)dev->mem_start + xfer_base,
 732                               semi_count);
 733                 count -= semi_count;
 734                 memcpy_fromio(skb->data + semi_count,
 735                               (void __iomem *)ei_status.rmem_start, count);
 736         } else {
 737                 memcpy_fromio(skb->data,
 738                               (void __iomem *)dev->mem_start + xfer_base,
 739                               count);
 740         }
 741 }
 742 
 743 static void sane_block_output(struct net_device *dev, int count,
 744                               const unsigned char *buf, int start_page)
 745 {
 746         long shmem = (start_page - WD_START_PG)<<8;
 747 
 748         memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count);
 749 }
 750 
 751 /* dayna block input/output */
 752 static void dayna_get_8390_hdr(struct net_device *dev,
 753                                struct e8390_pkt_hdr *hdr, int ring_page)
 754 {
 755         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 756 
 757         dayna_memcpy_fromcard(dev, hdr, hdr_start, 4);
 758         /* Fix endianness */
 759         hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8);
 760 }
 761 
 762 static void dayna_block_input(struct net_device *dev, int count,
 763                               struct sk_buff *skb, int ring_offset)
 764 {
 765         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 766         unsigned long xfer_start = xfer_base+dev->mem_start;
 767 
 768         /* Note the offset math is done in card memory space which is word
 769            per long onto our space. */
 770 
 771         if (xfer_start + count > ei_status.rmem_end) {
 772                 /* We must wrap the input move. */
 773                 int semi_count = ei_status.rmem_end - xfer_start;
 774                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
 775                 count -= semi_count;
 776                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
 777                                       ei_status.rmem_start - dev->mem_start,
 778                                       count);
 779         } else {
 780                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
 781         }
 782 }
 783 
 784 static void dayna_block_output(struct net_device *dev, int count,
 785                                const unsigned char *buf,
 786                                int start_page)
 787 {
 788         long shmem = (start_page - WD_START_PG)<<8;
 789 
 790         dayna_memcpy_tocard(dev, shmem, buf, count);
 791 }
 792 
 793 /* Cabletron block I/O */
 794 static void slow_sane_get_8390_hdr(struct net_device *dev,
 795                                    struct e8390_pkt_hdr *hdr,
 796                                    int ring_page)
 797 {
 798         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
 799         word_memcpy_fromcard(hdr, dev->mem_start + hdr_start, 4);
 800         /* Register endianism - fix here rather than 8390.c */
 801         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
 802 }
 803 
 804 static void slow_sane_block_input(struct net_device *dev, int count,
 805                                   struct sk_buff *skb, int ring_offset)
 806 {
 807         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
 808         unsigned long xfer_start = xfer_base+dev->mem_start;
 809 
 810         if (xfer_start + count > ei_status.rmem_end) {
 811                 /* We must wrap the input move. */
 812                 int semi_count = ei_status.rmem_end - xfer_start;
 813                 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
 814                                      semi_count);
 815                 count -= semi_count;
 816                 word_memcpy_fromcard(skb->data + semi_count,
 817                                      ei_status.rmem_start, count);
 818         } else {
 819                 word_memcpy_fromcard(skb->data, dev->mem_start + xfer_base,
 820                                      count);
 821         }
 822 }
 823 
 824 static void slow_sane_block_output(struct net_device *dev, int count,
 825                                    const unsigned char *buf, int start_page)
 826 {
 827         long shmem = (start_page - WD_START_PG)<<8;
 828 
 829         word_memcpy_tocard(dev->mem_start + shmem, buf, count);
 830 }
 831 
 832 static void word_memcpy_tocard(unsigned long tp, const void *fp, int count)
 833 {
 834         volatile unsigned short *to = (void *)tp;
 835         const unsigned short *from = fp;
 836 
 837         count++;
 838         count /= 2;
 839 
 840         while (count--)
 841                 *to++ = *from++;
 842 }
 843 
 844 static void word_memcpy_fromcard(void *tp, unsigned long fp, int count)
 845 {
 846         unsigned short *to = tp;
 847         const volatile unsigned short *from = (const void *)fp;
 848 
 849         count++;
 850         count /= 2;
 851 
 852         while (count--)
 853                 *to++ = *from++;
 854 }
 855 
 856
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root/drivers/net/ethernet/8390/mac8390.c

DEFINITIONS
