common/cmd_pcmcia.c

   1 /*
   2  * (C) Copyright 2000-2006
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  *
   7  ********************************************************************
   8  *
   9  * Lots of code copied from:
  10  *
  11  * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
  12  * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
  13  *
  14  * "The ExCA standard specifies that socket controllers should provide
  15  * two IO and five memory windows per socket, which can be independently
  16  * configured and positioned in the host address space and mapped to
  17  * arbitrary segments of card address space. " - David A Hinds. 1999
  18  *
  19  * This controller does _not_ meet the ExCA standard.
  20  *
  21  * m8xx pcmcia controller brief info:
  22  * + 8 windows (attrib, mem, i/o)
  23  * + up to two slots (SLOT_A and SLOT_B)
  24  * + inputpins, outputpins, event and mask registers.
  25  * - no offset register. sigh.
  26  *
  27  * Because of the lacking offset register we must map the whole card.
  28  * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
  29  * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
  30  * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
  31  * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
  32  * They are maximum 64KByte each...
  33  */
  34
  35 /* #define DEBUG        1       */
  36
  37 /*
  38  * PCMCIA support
  39  */
  40 #include <common.h>
  41 #include <command.h>
  42 #include <config.h>
  43 #include <pcmcia.h>
  44 #include <asm/io.h>
  45
  46 /* -------------------------------------------------------------------- */
  47
  48 #if defined(CONFIG_CMD_PCMCIA)
  49
  50 extern int pcmcia_on (void);
  51 extern int pcmcia_off (void);
  52
  53 int do_pinit (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  54 {
  55         int rcode = 0;
  56
  57         if (argc != 2) {
  58                 printf ("Usage: pinit {on | off}\n");
  59                 return 1;
  60         }
  61         if (strcmp(argv[1],"on") == 0) {
  62                 rcode = pcmcia_on ();
  63         } else if (strcmp(argv[1],"off") == 0) {
  64                 rcode = pcmcia_off ();
  65         } else {
  66                 printf ("Usage: pinit {on | off}\n");
  67                 return 1;
  68         }
  69
  70         return rcode;
  71 }
  72
  73 U_BOOT_CMD(
  74         pinit,  2,      0,      do_pinit,
  75         "PCMCIA sub-system",
  76         "on  - power on PCMCIA socket\n"
  77         "pinit off - power off PCMCIA socket"
  78 );
  79
  80 #endif
  81
  82 /* -------------------------------------------------------------------- */
  83
  84 #undef  CHECK_IDE_DEVICE
  85
  86 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
  87 #define CHECK_IDE_DEVICE
  88 #endif
  89
  90 #if     defined(CONFIG_PXA_PCMCIA)
  91 #define CHECK_IDE_DEVICE
  92 #endif
  93
  94 #ifdef  CHECK_IDE_DEVICE
  95
  96 int             ide_devices_found;
  97 static uchar    *known_cards[] = {
  98         (uchar *)"ARGOSY PnPIDE D5",
  99         NULL
 100 };
 101
 102 #define MAX_TUPEL_SZ    512
 103 #define MAX_FEATURES    4
 104
 105 #define MAX_IDENT_CHARS         64
 106 #define MAX_IDENT_FIELDS        4
 107
 108 #define indent  "\t   "
 109
 110 static void print_funcid (int func)
 111 {
 112         puts (indent);
 113         switch (func) {
 114                 case CISTPL_FUNCID_MULTI:
 115                         puts (" Multi-Function");
 116                         break;
 117                 case CISTPL_FUNCID_MEMORY:
 118                         puts (" Memory");
 119                         break;
 120                 case CISTPL_FUNCID_SERIAL:
 121                         puts (" Serial Port");
 122                         break;
 123                 case CISTPL_FUNCID_PARALLEL:
 124                         puts (" Parallel Port");
 125                         break;
 126                 case CISTPL_FUNCID_FIXED:
 127                         puts (" Fixed Disk");
 128                         break;
 129                 case CISTPL_FUNCID_VIDEO:
 130                         puts (" Video Adapter");
 131                         break;
 132                 case CISTPL_FUNCID_NETWORK:
 133                         puts (" Network Adapter");
 134                         break;
 135                 case CISTPL_FUNCID_AIMS:
 136                         puts (" AIMS Card");
 137                         break;
 138                 case CISTPL_FUNCID_SCSI:
 139                         puts (" SCSI Adapter");
 140                         break;
 141                 default:
 142                         puts (" Unknown");
 143                         break;
 144         }
 145         puts (" Card\n");
 146 }
 147
 148 static void print_fixed (volatile uchar *p)
 149 {
 150         if (p == NULL)
 151                 return;
 152
 153         puts(indent);
 154
 155         switch (*p) {
 156                 case CISTPL_FUNCE_IDE_IFACE:
 157                 {   uchar iface = *(p+2);
 158
 159                 puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
 160                 puts (" interface ");
 161                 break;
 162                 }
 163                 case CISTPL_FUNCE_IDE_MASTER:
 164                 case CISTPL_FUNCE_IDE_SLAVE:
 165                 {   uchar f1 = *(p+2);
 166                 uchar f2 = *(p+4);
 167
 168                 puts ((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
 169
 170                 if (f1 & CISTPL_IDE_UNIQUE)
 171                         puts (" [unique]");
 172
 173                 puts ((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
 174
 175                 if (f2 & CISTPL_IDE_HAS_SLEEP)
 176                         puts (" [sleep]");
 177
 178                 if (f2 & CISTPL_IDE_HAS_STANDBY)
 179                         puts (" [standby]");
 180
 181                 if (f2 & CISTPL_IDE_HAS_IDLE)
 182                         puts (" [idle]");
 183
 184                 if (f2 & CISTPL_IDE_LOW_POWER)
 185                         puts (" [low power]");
 186
 187                 if (f2 & CISTPL_IDE_REG_INHIBIT)
 188                         puts (" [reg inhibit]");
 189
 190                 if (f2 & CISTPL_IDE_HAS_INDEX)
 191                         puts (" [index]");
 192
 193                 if (f2 & CISTPL_IDE_IOIS16)
 194                         puts (" [IOis16]");
 195
 196                 break;
 197                 }
 198         }
 199         putc ('\n');
 200 }
 201
 202 static int identify  (volatile uchar *p)
 203 {
 204         uchar id_str[MAX_IDENT_CHARS];
 205         uchar data;
 206         uchar *t;
 207         uchar **card;
 208         int i, done;
 209
 210         if (p == NULL)
 211                 return (0);     /* Don't know */
 212
 213         t = id_str;
 214         done =0;
 215
 216         for (i=0; i<=4 && !done; ++i, p+=2) {
 217                 while ((data = *p) != '\0') {
 218                         if (data == 0xFF) {
 219                                 done = 1;
 220                                 break;
 221                         }
 222                         *t++ = data;
 223                         if (t == &id_str[MAX_IDENT_CHARS-1]) {
 224                                 done = 1;
 225                                 break;
 226                         }
 227                         p += 2;
 228                 }
 229                 if (!done)
 230                         *t++ = ' ';
 231         }
 232         *t = '\0';
 233         while (--t > id_str) {
 234                 if (*t == ' ')
 235                         *t = '\0';
 236                 else
 237                         break;
 238         }
 239         puts ((char *)id_str);
 240         putc ('\n');
 241
 242         for (card=known_cards; *card; ++card) {
 243                 debug ("## Compare against \"%s\"\n", *card);
 244                 if (strcmp((char *)*card, (char *)id_str) == 0) {       /* found! */
 245                         debug ("## CARD FOUND ##\n");
 246                         return (1);
 247                 }
 248         }
 249
 250         return (0);     /* don't know */
 251 }
 252
 253 int check_ide_device (int slot)
 254 {
 255         volatile uchar *ident = NULL;
 256         volatile uchar *feature_p[MAX_FEATURES];
 257         volatile uchar *p, *start, *addr;
 258         int n_features = 0;
 259         uchar func_id = ~0;
 260         uchar code, len;
 261         ushort config_base = 0;
 262         int found = 0;
 263         int i;
 264
 265         addr = (volatile uchar *)(CONFIG_SYS_PCMCIA_MEM_ADDR +
 266                                   CONFIG_SYS_PCMCIA_MEM_SIZE * (slot * 4));
 267         debug ("PCMCIA MEM: %08lX\n", (ulong)addr);
 268
 269         start = p = (volatile uchar *) addr;
 270
 271         while ((p - start) < MAX_TUPEL_SZ) {
 272
 273                 code = *p; p += 2;
 274
 275                 if (code == 0xFF) { /* End of chain */
 276                         break;
 277                 }
 278
 279                 len = *p; p += 2;
 280 #if defined(DEBUG) && (DEBUG > 1)
 281                 { volatile uchar *q = p;
 282                         printf ("\nTuple code %02x  length %d\n\tData:",
 283                                 code, len);
 284
 285                         for (i = 0; i < len; ++i) {
 286                                 printf (" %02x", *q);
 287                                 q+= 2;
 288                         }
 289                 }
 290 #endif  /* DEBUG */
 291                 switch (code) {
 292                 case CISTPL_VERS_1:
 293                         ident = p + 4;
 294                         break;
 295                 case CISTPL_FUNCID:
 296                         /* Fix for broken SanDisk which may have 0x80 bit set */
 297                         func_id = *p & 0x7F;
 298                         break;
 299                 case CISTPL_FUNCE:
 300                         if (n_features < MAX_FEATURES)
 301                                 feature_p[n_features++] = p;
 302                         break;
 303                 case CISTPL_CONFIG:
 304                         config_base = (*(p+6) << 8) + (*(p+4));
 305                         debug ("\n## Config_base = %04x ###\n", config_base);
 306                 default:
 307                         break;
 308                 }
 309                 p += 2 * len;
 310         }
 311
 312         found = identify (ident);
 313
 314         if (func_id != ((uchar)~0)) {
 315                 print_funcid (func_id);
 316
 317                 if (func_id == CISTPL_FUNCID_FIXED)
 318                         found = 1;
 319                 else
 320                         return (1);     /* no disk drive */
 321         }
 322
 323         for (i=0; i<n_features; ++i) {
 324                 print_fixed (feature_p[i]);
 325         }
 326
 327         if (!found) {
 328                 printf ("unknown card type\n");
 329                 return (1);
 330         }
 331
 332         ide_devices_found |= (1 << slot);
 333
 334         /* set I/O area in config reg -> only valid for ARGOSY D5!!! */
 335         *((uchar *)(addr + config_base)) = 1;
 336 #if 0
 337         printf("\n## Config_base = %04x ###\n", config_base);
 338         printf("Configuration Option Register: %02x @ %x\n", readb(addr + config_base), addr + config_base);
 339         printf("Card Configuration and Status Register: %02x\n", readb(addr + config_base + 2));
 340         printf("Pin Replacement Register Register: %02x\n", readb(addr + config_base + 4));
 341         printf("Socket and Copy Register: %02x\n", readb(addr + config_base + 6));
 342 #endif
 343         return (0);
 344 }
 345
 346 #endif  /* CHECK_IDE_DEVICE */