drivers/ti_pci1410a.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  * (C) Copyright 2002
   5  * Daniel Engström, Omicron Ceti AB
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  *
  25  ********************************************************************
  26  *
  27  * Lots of code copied from:
  28  *
  29  * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
  30  * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
  31  *
  32  * "The ExCA standard specifies that socket controllers should provide
  33  * two IO and five memory windows per socket, which can be independently
  34  * configured and positioned in the host address space and mapped to
  35  * arbitrary segments of card address space. " - David A Hinds. 1999
  36  *
  37  * This controller does _not_ meet the ExCA standard.
  38  *
  39  * m8xx pcmcia controller brief info:
  40  * + 8 windows (attrib, mem, i/o)
  41  * + up to two slots (SLOT_A and SLOT_B)
  42  * + inputpins, outputpins, event and mask registers.
  43  * - no offset register. sigh.
  44  *
  45  * Because of the lacking offset register we must map the whole card.
  46  * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
  47  * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
  48  * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
  49  * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
  50  * They are maximum 64KByte each...
  51  */
  52
  53
  54 #undef DEBUG            /**/
  55
  56 /*
  57  * PCMCIA support
  58  */
  59 #include <common.h>
  60 #include <command.h>
  61 #include <config.h>
  62 #include <pci.h>
  63 #include <asm/io.h>
  64
  65 #include <pcmcia.h>
  66
  67 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && defined(CONFIG_IDE_TI_CARDBUS)
  68
  69 int pcmcia_on(int ide_base_bus);
  70
  71 static int  pcmcia_off(void);
  72 static int  hardware_disable(int slot);
  73 static int  hardware_enable(int slot);
  74 static int  voltage_set(int slot, int vcc, int vpp);
  75 static void print_funcid(int func);
  76 static void print_fixed(volatile uchar *p);
  77 static int  identify(volatile uchar *p);
  78 static int  check_ide_device(int slot, int ide_base_bus);
  79
  80
  81 /* ------------------------------------------------------------------------- */
  82
  83
  84 const char *indent = "\t   ";
  85
  86 /* ------------------------------------------------------------------------- */
  87
  88
  89 int do_pinit(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  90 {
  91 #ifndef CFG_FISRT_PCMCIA_BUS
  92 # define CFG_FISRT_PCMCIA_BUS 0
  93 #endif
  94
  95         int rcode = 0;
  96
  97         if (argc != 2) {
  98                 printf ("Usage: pinit {on | off}\n");
  99                 return 1;
 100         }
 101         if (strcmp(argv[1],"on") == 0) {
 102                 rcode = pcmcia_on(CFG_FISRT_PCMCIA_BUS);
 103         } else if (strcmp(argv[1],"off") == 0) {
 104                 rcode = pcmcia_off();
 105         } else {
 106                 printf ("Usage: pinit {on | off}\n");
 107                 return 1;
 108         }
 109
 110         return rcode;
 111 }
 112
 113 /* ------------------------------------------------------------------------- */
 114
 115
 116 static struct pci_device_id supported[] = {
 117         { PCI_VENDOR_ID_TI, 0xac50 }, /* Ti PCI1410A */
 118         { PCI_VENDOR_ID_TI, 0xac56 }, /* Ti PCI1510 */
 119         { }
 120 };
 121
 122 static pci_dev_t devbusfn;
 123 static u32 socket_base;
 124 static u32 pcmcia_cis_ptr;
 125
 126 int pcmcia_on(int ide_base_bus)
 127 {
 128         u16 dev_id;
 129         u32 socket_status;
 130         int slot = 0;
 131         int cis_len;
 132         u16 io_base;
 133         u16 io_len;
 134
 135         /*
 136          * Find the CardBus PCI device(s).
 137          */
 138         if ((devbusfn = pci_find_devices(supported, 0)) < 0) {
 139                 printf("Ti CardBus: not found\n");
 140                 return 1;
 141         }
 142
 143         pci_read_config_word(devbusfn, PCI_DEVICE_ID, &dev_id);
 144
 145         if (dev_id == 0xac56) {
 146                 debug("Enable PCMCIA Ti PCI1510\n");
 147         } else {
 148                 debug("Enable PCMCIA Ti PCI1410A\n");
 149         }
 150
 151         pcmcia_cis_ptr = CFG_PCMCIA_CIS_WIN;
 152         cis_len = CFG_PCMCIA_CIS_WIN_SIZE;
 153
 154         io_base = CFG_PCMCIA_IO_WIN;
 155         io_len = CFG_PCMCIA_IO_WIN_SIZE;
 156
 157         /*
 158          * Setup the PCI device.
 159          */
 160         pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_0, &socket_base);
 161         socket_base &= ~0xf;
 162
 163         socket_status = readl(socket_base+8);
 164         if ((socket_status & 6) == 0) {
 165                 printf("Card Present: ");
 166
 167                 switch (socket_status & 0x3c00) {
 168
 169                 case 0x400:
 170                         printf("5V ");
 171                         break;
 172                 case 0x800:
 173                         printf("3.3V ");
 174                         break;
 175                 case 0xc00:
 176                         printf("3.3/5V ");
 177                         break;
 178                 default:
 179                         printf("unsupported Vcc ");
 180                         break;
 181                 }
 182                 switch (socket_status & 0x30) {
 183                 case 0x10:
 184                         printf("16bit PC-Card\n");
 185                         break;
 186                 case 0x20:
 187                         printf("32bit CardBus Card\n");
 188                         break;
 189                 default:
 190                         printf("8bit PC-Card\n");
 191                         break;
 192                 }
 193         }
 194
 195
 196         writeb(0x41, socket_base + 0x806); /* Enable I/O window 0 and memory window 0 */
 197         writeb(0x0e, socket_base + 0x807); /* Reset I/O window options */
 198
 199         /* Careful: the linux yenta driver do not seem to reset the offset
 200          * in the i/o windows, so leaving them non-zero is a problem */
 201
 202         writeb(io_base & 0xff, socket_base + 0x808); /* I/O window 0 base address */
 203         writeb(io_base>>8, socket_base + 0x809);
 204         writeb((io_base + io_len - 1) & 0xff, socket_base + 0x80a); /* I/O window 0 end address */
 205         writeb((io_base + io_len - 1)>>8, socket_base + 0x80b);
 206         writeb(0x00, socket_base + 0x836);      /* I/O window 0 offset address 0x000 */
 207         writeb(0x00, socket_base + 0x837);
 208
 209
 210         writeb((pcmcia_cis_ptr&0x000ff000) >> 12,
 211                socket_base + 0x810); /* Memory window 0 start address bits 19-12 */
 212         writeb((pcmcia_cis_ptr&0x00f00000) >> 20,
 213                socket_base + 0x811);  /* Memory window 0 start address bits 23-20 */
 214         writeb(((pcmcia_cis_ptr+cis_len-1) & 0x000ff000) >> 12,
 215                 socket_base + 0x812); /* Memory window 0 end address bits 19-12*/
 216         writeb(((pcmcia_cis_ptr+cis_len-1) & 0x00f00000) >> 20,
 217                 socket_base + 0x813); /* Memory window 0 end address bits 23-20*/
 218         writeb(0x00, socket_base + 0x814); /* Memory window 0 offset bits 19-12 */
 219         writeb(0x40, socket_base + 0x815); /* Memory window 0 offset bits 23-20 and
 220                                             * options (read/write, attribute access) */
 221         writeb(0x00, socket_base + 0x816); /* ExCA card-detect and general control  */
 222         writeb(0x00, socket_base + 0x81e); /* ExCA global control (interrupt modes) */
 223
 224         writeb((pcmcia_cis_ptr & 0xff000000) >> 24,
 225                socket_base + 0x840); /* Memory window address bits 31-24 */
 226
 227
 228         /* turn off voltage */
 229         if (voltage_set(slot, 0, 0)) {
 230                 return 1;
 231         }
 232
 233         /* Enable external hardware */
 234         if (hardware_enable(slot)) {
 235                 return 1;
 236         }
 237
 238         if (check_ide_device(slot, ide_base_bus)) {
 239                 return 1;
 240         }
 241
 242         return 0;
 243 }
 244
 245 /* ------------------------------------------------------------------------- */
 246
 247
 248 static int pcmcia_off (void)
 249 {
 250         int slot = 0;
 251
 252         writeb(0x00, socket_base + 0x806); /* disable all I/O and memory windows */
 253
 254         writeb(0x00, socket_base + 0x808); /* I/O window 0 base address */
 255         writeb(0x00, socket_base + 0x809);
 256         writeb(0x00, socket_base + 0x80a); /* I/O window 0 end address */
 257         writeb(0x00, socket_base + 0x80b);
 258         writeb(0x00, socket_base + 0x836); /* I/O window 0 offset address  */
 259         writeb(0x00, socket_base + 0x837);
 260
 261         writeb(0x00, socket_base + 0x80c); /* I/O window 1 base address  */
 262         writeb(0x00, socket_base + 0x80d);
 263         writeb(0x00, socket_base + 0x80e); /* I/O window 1 end address  */
 264         writeb(0x00, socket_base + 0x80f);
 265         writeb(0x00, socket_base + 0x838); /* I/O window 1 offset address  */
 266         writeb(0x00, socket_base + 0x839);
 267
 268         writeb(0x00, socket_base + 0x810); /* Memory window 0 start address */
 269         writeb(0x00, socket_base + 0x811);
 270         writeb(0x00, socket_base + 0x812); /* Memory window 0 end address  */
 271         writeb(0x00, socket_base + 0x813);
 272         writeb(0x00, socket_base + 0x814); /* Memory window 0 offset */
 273         writeb(0x00, socket_base + 0x815);
 274
 275         writeb(0xc0, socket_base + 0x840); /* Memory window 0 page address */
 276
 277
 278         /* turn off voltage */
 279         voltage_set(slot, 0, 0);
 280
 281         /* disable external hardware */
 282         printf ("Shutdown and Poweroff Ti PCI1410A\n");
 283         hardware_disable(slot);
 284
 285         return 0;
 286 }
 287
 288
 289 /* ------------------------------------------------------------------------- */
 290
 291
 292 #define MAX_TUPEL_SZ    512
 293 #define MAX_FEATURES    4
 294 int ide_devices_found;
 295 static int check_ide_device(int slot, int ide_base_bus)
 296 {
 297         volatile uchar *ident = NULL;
 298         volatile uchar *feature_p[MAX_FEATURES];
 299         volatile uchar *p, *start;
 300         int n_features = 0;
 301         uchar func_id = ~0;
 302         uchar code, len;
 303         ushort config_base = 0;
 304         int found = 0;
 305         int i;
 306         u32 socket_status;
 307
 308         debug ("PCMCIA MEM: %08X\n", pcmcia_cis_ptr);
 309
 310         socket_status = readl(socket_base+8);
 311
 312         if ((socket_status & 6) != 0 || (socket_status & 0x20) != 0) {
 313                 printf("no card or CardBus card\n");
 314                 return 1;
 315         }
 316
 317         start = p = (volatile uchar *) pcmcia_cis_ptr;
 318
 319         while ((p - start) < MAX_TUPEL_SZ) {
 320
 321                 code = *p; p += 2;
 322
 323                 if (code == 0xFF) { /* End of chain */
 324                         break;
 325                 }
 326
 327                 len = *p; p += 2;
 328 #if defined(DEBUG) && (DEBUG > 1)
 329                 {
 330                         volatile uchar *q = p;
 331                         printf ("\nTuple code %02x  length %d\n\tData:",
 332                                 code, len);
 333
 334                         for (i = 0; i < len; ++i) {
 335                                 printf (" %02x", *q);
 336                                 q+= 2;
 337                         }
 338                 }
 339 #endif  /* DEBUG */
 340                 switch (code) {
 341                 case CISTPL_VERS_1:
 342                         ident = p + 4;
 343                         break;
 344                 case CISTPL_FUNCID:
 345                         /* Fix for broken SanDisk which may have 0x80 bit set */
 346                         func_id = *p & 0x7F;
 347                         break;
 348                 case CISTPL_FUNCE:
 349                         if (n_features < MAX_FEATURES)
 350                                 feature_p[n_features++] = p;
 351                         break;
 352                 case CISTPL_CONFIG:
 353                         config_base = (*(p+6) << 8) + (*(p+4));
 354                         debug ("\n## Config_base = %04x ###\n", config_base);
 355                 default:
 356                         break;
 357                 }
 358                 p += 2 * len;
 359         }
 360
 361         found = identify(ident);
 362
 363         if (func_id != ((uchar)~0)) {
 364                 print_funcid (func_id);
 365
 366                 if (func_id == CISTPL_FUNCID_FIXED)
 367                         found = 1;
 368                 else
 369                         return 1;       /* no disk drive */
 370         }
 371
 372         for (i=0; i<n_features; ++i) {
 373                 print_fixed(feature_p[i]);
 374         }
 375
 376         if (!found) {
 377                 printf("unknown card type\n");
 378                 return 1;
 379         }
 380
 381         /* select config index 1 */
 382         writeb(1, pcmcia_cis_ptr + config_base);
 383
 384 #if 0
 385         printf("Confiuration Option Register: %02x\n", readb(pcmcia_cis_ptr + config_base));
 386         printf("Card Confiuration and Status Register: %02x\n", readb(pcmcia_cis_ptr + config_base + 2));
 387         printf("Pin Replacement Register Register: %02x\n", readb(pcmcia_cis_ptr + config_base + 4));
 388         printf("Socket and Copy Register: %02x\n", readb(pcmcia_cis_ptr + config_base + 6));
 389 #endif
 390         ide_devices_found |= (1 << (slot+ide_base_bus));
 391
 392         return 0;
 393 }
 394
 395
 396 static int voltage_set(int slot, int vcc, int vpp)
 397 {
 398         u32 socket_control;
 399         int reg=0;
 400
 401         switch (slot) {
 402         case 0:
 403                 reg = socket_base + 0x10;
 404                 break;
 405         default:
 406                 return 1;
 407         }
 408
 409         socket_control = 0;
 410
 411
 412         switch (vcc) {
 413         case 50:
 414                 socket_control |= 0x20;
 415                 break;
 416         case 33:
 417                 socket_control |= 0x30;
 418                 break;
 419         case 0:
 420         default:
 421         }
 422
 423         switch (vpp) {
 424         case 120:
 425                 socket_control |= 0x1;
 426                 break;
 427         case 50:
 428                 socket_control |= 0x2;
 429                 break;
 430         case 33:
 431                 socket_control |= 0x3;
 432                 break;
 433         case 0:
 434         default:
 435         }
 436
 437         writel(socket_control, reg);
 438
 439         debug ("voltage_set: Ti PCI1410A Slot %d, Vcc=%d.%d, Vpp=%d.%d\n",
 440                 slot, vcc/10, vcc%10, vpp/10, vpp%10);
 441
 442         udelay(500);
 443         return 0;
 444 }
 445
 446
 447 static int hardware_enable(int slot)
 448 {
 449         u32 socket_status;
 450         u16 brg_ctrl;
 451         int is_82365sl;
 452
 453         socket_status = readl(socket_base+8);
 454
 455         if ((socket_status & 6) == 0) {
 456
 457                 switch (socket_status & 0x3c00) {
 458
 459                 case 0x400:
 460                         printf("5V ");
 461                         voltage_set(slot, 50, 0);
 462                         break;
 463                 case 0x800:
 464                         voltage_set(slot, 33, 0);
 465                         break;
 466                 case 0xc00:
 467                         voltage_set(slot, 33, 0);
 468                         break;
 469                 default:
 470                         voltage_set(slot, 0, 0);
 471                         break;
 472                 }
 473         } else {
 474                 voltage_set(slot, 0, 0);
 475         }
 476
 477         pci_read_config_word(devbusfn, PCI_BRIDGE_CONTROL, &brg_ctrl);
 478         brg_ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET;
 479         pci_write_config_word(devbusfn, PCI_BRIDGE_CONTROL, brg_ctrl);
 480         is_82365sl = ((readb(socket_base+0x800) & 0x0f) == 2);
 481         writeb(is_82365sl?0x90:0x98, socket_base+0x802);
 482         writeb(0x67, socket_base+0x803);
 483         udelay(100000);
 484 #if 0
 485         printf("ExCA Id %02x, Card Status %02x, Power config %02x, Interrupt Config %02x, bridge control %04x %d\n",
 486                readb(socket_base+0x800), readb(socket_base+0x801),
 487                readb(socket_base+0x802), readb(socket_base+0x803), brg_ctrl, is_82365sl);
 488 #endif
 489
 490         return ((readb(socket_base+0x801)&0x6c)==0x6c)?0:1;
 491 }
 492
 493
 494 static int hardware_disable(int slot)
 495 {
 496         voltage_set(slot, 0, 0);
 497         return 0;
 498 }
 499
 500 static void print_funcid(int func)
 501 {
 502         puts(indent);
 503         switch (func) {
 504         case CISTPL_FUNCID_MULTI:
 505                 puts(" Multi-Function");
 506                 break;
 507         case CISTPL_FUNCID_MEMORY:
 508                 puts(" Memory");
 509                 break;
 510         case CISTPL_FUNCID_SERIAL:
 511                 puts(" Serial Port");
 512                 break;
 513         case CISTPL_FUNCID_PARALLEL:
 514                 puts(" Parallel Port");
 515                 break;
 516         case CISTPL_FUNCID_FIXED:
 517                 puts(" Fixed Disk");
 518                 break;
 519         case CISTPL_FUNCID_VIDEO:
 520                 puts(" Video Adapter");
 521                 break;
 522         case CISTPL_FUNCID_NETWORK:
 523                 puts(" Network Adapter");
 524                 break;
 525         case CISTPL_FUNCID_AIMS:
 526                 puts(" AIMS Card");
 527                 break;
 528         case CISTPL_FUNCID_SCSI:
 529                 puts(" SCSI Adapter");
 530                 break;
 531         default:
 532                 puts(" Unknown");
 533                 break;
 534         }
 535         puts(" Card\n");
 536 }
 537
 538 /* ------------------------------------------------------------------------- */
 539
 540 static void print_fixed(volatile uchar *p)
 541 {
 542         if (p == NULL)
 543                 return;
 544
 545         puts(indent);
 546
 547         switch (*p) {
 548         case CISTPL_FUNCE_IDE_IFACE:
 549                 {   uchar iface = *(p+2);
 550
 551                         puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
 552                         puts (" interface ");
 553                         break;
 554                 }
 555         case CISTPL_FUNCE_IDE_MASTER:
 556         case CISTPL_FUNCE_IDE_SLAVE:
 557                 {
 558                         uchar f1 = *(p+2);
 559                         uchar f2 = *(p+4);
 560
 561                         puts((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
 562
 563                         if (f1 & CISTPL_IDE_UNIQUE) {
 564                                 puts(" [unique]");
 565                         }
 566
 567                         puts((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
 568
 569                         if (f2 & CISTPL_IDE_HAS_SLEEP) {
 570                                 puts(" [sleep]");
 571                         }
 572
 573                         if (f2 & CISTPL_IDE_HAS_STANDBY) {
 574                                 puts(" [standby]");
 575                         }
 576
 577                         if (f2 & CISTPL_IDE_HAS_IDLE) {
 578                                 puts(" [idle]");
 579                         }
 580
 581                         if (f2 & CISTPL_IDE_LOW_POWER) {
 582                                 puts(" [low power]");
 583                         }
 584
 585                         if (f2 & CISTPL_IDE_REG_INHIBIT) {
 586                                 puts(" [reg inhibit]");
 587                         }
 588
 589                         if (f2 & CISTPL_IDE_HAS_INDEX) {
 590                                 puts(" [index]");
 591                         }
 592
 593                         if (f2 & CISTPL_IDE_IOIS16) {
 594                                 puts(" [IOis16]");
 595                         }
 596
 597                         break;
 598                 }
 599         }
 600         putc('\n');
 601 }
 602
 603 /* ------------------------------------------------------------------------- */
 604
 605 #define MAX_IDENT_CHARS         64
 606 #define MAX_IDENT_FIELDS        4
 607
 608 static uchar *known_cards[] = {
 609         "ARGOSY PnPIDE D5",
 610         NULL
 611 };
 612
 613 static int identify(volatile uchar *p)
 614 {
 615         uchar id_str[MAX_IDENT_CHARS];
 616         uchar data;
 617         uchar *t;
 618         uchar **card;
 619         int i, done;
 620
 621         if (p == NULL)
 622                 return (0);     /* Don't know */
 623
 624         t = id_str;
 625         done =0;
 626
 627         for (i=0; i<=4 && !done; ++i, p+=2) {
 628                 while ((data = *p) != '\0') {
 629                         if (data == 0xFF) {
 630                                 done = 1;
 631                                 break;
 632                         }
 633                         *t++ = data;
 634                         if (t == &id_str[MAX_IDENT_CHARS-1]) {
 635                                 done = 1;
 636                                 break;
 637                         }
 638                         p += 2;
 639                 }
 640                 if (!done)
 641                         *t++ = ' ';
 642         }
 643         *t = '\0';
 644         while (--t > id_str) {
 645                 if (*t == ' ') {
 646                         *t = '\0';
 647                 } else {
 648                         break;
 649                 }
 650         }
 651         puts(id_str);
 652         putc('\n');
 653
 654         for (card=known_cards; *card; ++card) {
 655                 debug ("## Compare against \"%s\"\n", *card);
 656                 if (strcmp(*card, id_str) == 0) {       /* found! */
 657                         debug ("## CARD FOUND ##\n");
 658                         return 1;
 659                 }
 660         }
 661
 662         return 0;       /* don't know */
 663 }
 664
 665 #endif /* CONFIG_IDE_TI_CARDBUS */