arch/mips/cavium-octeon/executive/octeon-model.c

   1 /***********************license start***************
   2  * Author: Cavium Networks
   3  *
   4  * Contact: support@caviumnetworks.com
   5  * This file is part of the OCTEON SDK
   6  *
   7  * Copyright (c) 2003-2010 Cavium Networks
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this file; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  22  * or visit http://www.gnu.org/licenses/.
  23  *
  24  * This file may also be available under a different license from Cavium.
  25  * Contact Cavium Networks for more information
  26  ***********************license end**************************************/
  27
  28 #include <asm/octeon/octeon.h>
  29
  30 enum octeon_feature_bits __octeon_feature_bits __read_mostly;
  31 EXPORT_SYMBOL_GPL(__octeon_feature_bits);
  32
  33 /**
  34  * Read a byte of fuse data
  35  * @byte_addr:   address to read
  36  *
  37  * Returns fuse value: 0 or 1
  38  */
  39 static uint8_t __init cvmx_fuse_read_byte(int byte_addr)
  40 {
  41         union cvmx_mio_fus_rcmd read_cmd;
  42
  43         read_cmd.u64 = 0;
  44         read_cmd.s.addr = byte_addr;
  45         read_cmd.s.pend = 1;
  46         cvmx_write_csr(CVMX_MIO_FUS_RCMD, read_cmd.u64);
  47         while ((read_cmd.u64 = cvmx_read_csr(CVMX_MIO_FUS_RCMD))
  48                && read_cmd.s.pend)
  49                 ;
  50         return read_cmd.s.dat;
  51 }
  52
  53 /*
  54  * Version of octeon_model_get_string() that takes buffer as argument,
  55  * as running early in u-boot static/global variables don't work when
  56  * running from flash.
  57  */
  58 static const char *__init octeon_model_get_string_buffer(uint32_t chip_id,
  59                                                          char *buffer)
  60 {
  61         const char *family;
  62         const char *core_model;
  63         char pass[4];
  64         int clock_mhz;
  65         const char *suffix;
  66         union cvmx_l2d_fus3 fus3;
  67         int num_cores;
  68         union cvmx_mio_fus_dat2 fus_dat2;
  69         union cvmx_mio_fus_dat3 fus_dat3;
  70         char fuse_model[10];
  71         uint32_t fuse_data = 0;
  72
  73         fus3.u64 = 0;
  74         if (!OCTEON_IS_MODEL(OCTEON_CN6XXX))
  75                 fus3.u64 = cvmx_read_csr(CVMX_L2D_FUS3);
  76         fus_dat2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
  77         fus_dat3.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT3);
  78         num_cores = cvmx_pop(cvmx_read_csr(CVMX_CIU_FUSE));
  79
  80         /* Make sure the non existent devices look disabled */
  81         switch ((chip_id >> 8) & 0xff) {
  82         case 6:         /* CN50XX */
  83         case 2:         /* CN30XX */
  84                 fus_dat3.s.nodfa_dte = 1;
  85                 fus_dat3.s.nozip = 1;
  86                 break;
  87         case 4:         /* CN57XX or CN56XX */
  88                 fus_dat3.s.nodfa_dte = 1;
  89                 break;
  90         default:
  91                 break;
  92         }
  93
  94         /* Make a guess at the suffix */
  95         /* NSP = everything */
  96         /* EXP = No crypto */
  97         /* SCP = No DFA, No zip */
  98         /* CP = No DFA, No crypto, No zip */
  99         if (fus_dat3.s.nodfa_dte) {
 100                 if (fus_dat2.s.nocrypto)
 101                         suffix = "CP";
 102                 else
 103                         suffix = "SCP";
 104         } else if (fus_dat2.s.nocrypto)
 105                 suffix = "EXP";
 106         else
 107                 suffix = "NSP";
 108
 109         if (!fus_dat2.s.nocrypto)
 110                 __octeon_feature_bits |= OCTEON_HAS_CRYPTO;
 111
 112         /*
 113          * Assume pass number is encoded using <5:3><2:0>. Exceptions
 114          * will be fixed later.
 115          */
 116         sprintf(pass, "%d.%d", (int)((chip_id >> 3) & 7) + 1, (int)chip_id & 7);
 117
 118         /*
 119          * Use the number of cores to determine the last 2 digits of
 120          * the model number. There are some exceptions that are fixed
 121          * later.
 122          */
 123         switch (num_cores) {
 124         case 32:
 125                 core_model = "80";
 126                 break;
 127         case 24:
 128                 core_model = "70";
 129                 break;
 130         case 16:
 131                 core_model = "60";
 132                 break;
 133         case 15:
 134                 core_model = "58";
 135                 break;
 136         case 14:
 137                 core_model = "55";
 138                 break;
 139         case 13:
 140                 core_model = "52";
 141                 break;
 142         case 12:
 143                 core_model = "50";
 144                 break;
 145         case 11:
 146                 core_model = "48";
 147                 break;
 148         case 10:
 149                 core_model = "45";
 150                 break;
 151         case 9:
 152                 core_model = "42";
 153                 break;
 154         case 8:
 155                 core_model = "40";
 156                 break;
 157         case 7:
 158                 core_model = "38";
 159                 break;
 160         case 6:
 161                 core_model = "34";
 162                 break;
 163         case 5:
 164                 core_model = "32";
 165                 break;
 166         case 4:
 167                 core_model = "30";
 168                 break;
 169         case 3:
 170                 core_model = "25";
 171                 break;
 172         case 2:
 173                 core_model = "20";
 174                 break;
 175         case 1:
 176                 core_model = "10";
 177                 break;
 178         default:
 179                 core_model = "XX";
 180                 break;
 181         }
 182
 183         /* Now figure out the family, the first two digits */
 184         switch ((chip_id >> 8) & 0xff) {
 185         case 0:         /* CN38XX, CN37XX or CN36XX */
 186                 if (fus3.cn38xx.crip_512k) {
 187                         /*
 188                          * For some unknown reason, the 16 core one is
 189                          * called 37 instead of 36.
 190                          */
 191                         if (num_cores >= 16)
 192                                 family = "37";
 193                         else
 194                                 family = "36";
 195                 } else
 196                         family = "38";
 197                 /*
 198                  * This series of chips didn't follow the standard
 199                  * pass numbering.
 200                  */
 201                 switch (chip_id & 0xf) {
 202                 case 0:
 203                         strcpy(pass, "1.X");
 204                         break;
 205                 case 1:
 206                         strcpy(pass, "2.X");
 207                         break;
 208                 case 3:
 209                         strcpy(pass, "3.X");
 210                         break;
 211                 default:
 212                         strcpy(pass, "X.X");
 213                         break;
 214                 }
 215                 break;
 216         case 1:         /* CN31XX or CN3020 */
 217                 if ((chip_id & 0x10) || fus3.cn31xx.crip_128k)
 218                         family = "30";
 219                 else
 220                         family = "31";
 221                 /*
 222                  * This series of chips didn't follow the standard
 223                  * pass numbering.
 224                  */
 225                 switch (chip_id & 0xf) {
 226                 case 0:
 227                         strcpy(pass, "1.0");
 228                         break;
 229                 case 2:
 230                         strcpy(pass, "1.1");
 231                         break;
 232                 default:
 233                         strcpy(pass, "X.X");
 234                         break;
 235                 }
 236                 break;
 237         case 2:         /* CN3010 or CN3005 */
 238                 family = "30";
 239                 /* A chip with half cache is an 05 */
 240                 if (fus3.cn30xx.crip_64k)
 241                         core_model = "05";
 242                 /*
 243                  * This series of chips didn't follow the standard
 244                  * pass numbering.
 245                  */
 246                 switch (chip_id & 0xf) {
 247                 case 0:
 248                         strcpy(pass, "1.0");
 249                         break;
 250                 case 2:
 251                         strcpy(pass, "1.1");
 252                         break;
 253                 default:
 254                         strcpy(pass, "X.X");
 255                         break;
 256                 }
 257                 break;
 258         case 3:         /* CN58XX */
 259                 family = "58";
 260                 /* Special case. 4 core, half cache (CP with half cache) */
 261                 if ((num_cores == 4) && fus3.cn58xx.crip_1024k && !strncmp(suffix, "CP", 2))
 262                         core_model = "29";
 263
 264                 /* Pass 1 uses different encodings for pass numbers */
 265                 if ((chip_id & 0xFF) < 0x8) {
 266                         switch (chip_id & 0x3) {
 267                         case 0:
 268                                 strcpy(pass, "1.0");
 269                                 break;
 270                         case 1:
 271                                 strcpy(pass, "1.1");
 272                                 break;
 273                         case 3:
 274                                 strcpy(pass, "1.2");
 275                                 break;
 276                         default:
 277                                 strcpy(pass, "1.X");
 278                                 break;
 279                         }
 280                 }
 281                 break;
 282         case 4:         /* CN57XX, CN56XX, CN55XX, CN54XX */
 283                 if (fus_dat2.cn56xx.raid_en) {
 284                         if (fus3.cn56xx.crip_1024k)
 285                                 family = "55";
 286                         else
 287                                 family = "57";
 288                         if (fus_dat2.cn56xx.nocrypto)
 289                                 suffix = "SP";
 290                         else
 291                                 suffix = "SSP";
 292                 } else {
 293                         if (fus_dat2.cn56xx.nocrypto)
 294                                 suffix = "CP";
 295                         else {
 296                                 suffix = "NSP";
 297                                 if (fus_dat3.s.nozip)
 298                                         suffix = "SCP";
 299
 300                                 if (fus_dat3.s.bar2_en)
 301                                         suffix = "NSPB2";
 302                         }
 303                         if (fus3.cn56xx.crip_1024k)
 304                                 family = "54";
 305                         else
 306                                 family = "56";
 307                 }
 308                 break;
 309         case 6:         /* CN50XX */
 310                 family = "50";
 311                 break;
 312         case 7:         /* CN52XX */
 313                 if (fus3.cn52xx.crip_256k)
 314                         family = "51";
 315                 else
 316                         family = "52";
 317                 break;
 318         case 0x93:              /* CN61XX */
 319                 family = "61";
 320                 if (fus_dat2.cn61xx.nocrypto && fus_dat2.cn61xx.dorm_crypto)
 321                         suffix = "AP";
 322                 if (fus_dat2.cn61xx.nocrypto)
 323                         suffix = "CP";
 324                 else if (fus_dat2.cn61xx.dorm_crypto)
 325                         suffix = "DAP";
 326                 else if (fus_dat3.cn61xx.nozip)
 327                         suffix = "SCP";
 328                 break;
 329         case 0x90:              /* CN63XX */
 330                 family = "63";
 331                 if (fus_dat3.s.l2c_crip == 2)
 332                         family = "62";
 333                 if (num_cores == 6)     /* Other core counts match generic */
 334                         core_model = "35";
 335                 if (fus_dat2.cn63xx.nocrypto)
 336                         suffix = "CP";
 337                 else if (fus_dat2.cn63xx.dorm_crypto)
 338                         suffix = "DAP";
 339                 else if (fus_dat3.cn63xx.nozip)
 340                         suffix = "SCP";
 341                 else
 342                         suffix = "AAP";
 343                 break;
 344         case 0x92:              /* CN66XX */
 345                 family = "66";
 346                 if (num_cores == 6)     /* Other core counts match generic */
 347                         core_model = "35";
 348                 if (fus_dat2.cn66xx.nocrypto && fus_dat2.cn66xx.dorm_crypto)
 349                         suffix = "AP";
 350                 if (fus_dat2.cn66xx.nocrypto)
 351                         suffix = "CP";
 352                 else if (fus_dat2.cn66xx.dorm_crypto)
 353                         suffix = "DAP";
 354                 else if (fus_dat3.cn66xx.nozip)
 355                         suffix = "SCP";
 356                 else
 357                         suffix = "AAP";
 358                 break;
 359         case 0x91:              /* CN68XX */
 360                 family = "68";
 361                 if (fus_dat2.cn68xx.nocrypto && fus_dat3.cn68xx.nozip)
 362                         suffix = "CP";
 363                 else if (fus_dat2.cn68xx.dorm_crypto)
 364                         suffix = "DAP";
 365                 else if (fus_dat3.cn68xx.nozip)
 366                         suffix = "SCP";
 367                 else if (fus_dat2.cn68xx.nocrypto)
 368                         suffix = "SP";
 369                 else
 370                         suffix = "AAP";
 371                 break;
 372         default:
 373                 family = "XX";
 374                 core_model = "XX";
 375                 strcpy(pass, "X.X");
 376                 suffix = "XXX";
 377                 break;
 378         }
 379
 380         clock_mhz = octeon_get_clock_rate() / 1000000;
 381         if (family[0] != '3') {
 382                 int fuse_base = 384 / 8;
 383                 if (family[0] == '6')
 384                         fuse_base = 832 / 8;
 385
 386                 /* Check for model in fuses, overrides normal decode */
 387                 /* This is _not_ valid for Octeon CN3XXX models */
 388                 fuse_data |= cvmx_fuse_read_byte(fuse_base + 3);
 389                 fuse_data = fuse_data << 8;
 390                 fuse_data |= cvmx_fuse_read_byte(fuse_base + 2);
 391                 fuse_data = fuse_data << 8;
 392                 fuse_data |= cvmx_fuse_read_byte(fuse_base + 1);
 393                 fuse_data = fuse_data << 8;
 394                 fuse_data |= cvmx_fuse_read_byte(fuse_base);
 395                 if (fuse_data & 0x7ffff) {
 396                         int model = fuse_data & 0x3fff;
 397                         int suffix = (fuse_data >> 14) & 0x1f;
 398                         if (suffix && model) {
 399                                 /* Have both number and suffix in fuses, so both */
 400                                 sprintf(fuse_model, "%d%c", model, 'A' + suffix - 1);
 401                                 core_model = "";
 402                                 family = fuse_model;
 403                         } else if (suffix && !model) {
 404                                 /* Only have suffix, so add suffix to 'normal' model number */
 405                                 sprintf(fuse_model, "%s%c", core_model, 'A' + suffix - 1);
 406                                 core_model = fuse_model;
 407                         } else {
 408                                 /* Don't have suffix, so just use model from fuses */
 409                                 sprintf(fuse_model, "%d", model);
 410                                 core_model = "";
 411                                 family = fuse_model;
 412                         }
 413                 }
 414         }
 415         sprintf(buffer, "CN%s%sp%s-%d-%s", family, core_model, pass, clock_mhz, suffix);
 416         return buffer;
 417 }
 418
 419 /**
 420  * Given the chip processor ID from COP0, this function returns a
 421  * string representing the chip model number. The string is of the
 422  * form CNXXXXpX.X-FREQ-SUFFIX.
 423  * - XXXX = The chip model number
 424  * - X.X = Chip pass number
 425  * - FREQ = Current frequency in Mhz
 426  * - SUFFIX = NSP, EXP, SCP, SSP, or CP
 427  *
 428  * @chip_id: Chip ID
 429  *
 430  * Returns Model string
 431  */
 432 const char *__init octeon_model_get_string(uint32_t chip_id)
 433 {
 434         static char buffer[32];
 435         return octeon_model_get_string_buffer(chip_id, buffer);
 436 }