arch/sparc/kernel/cpu.c

   1 /* cpu.c: Dinky routines to look for the kind of Sparc cpu
   2  *        we are on.
   3  *
   4  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
   5  */
   6
   7 #include <linux/seq_file.h>
   8 #include <linux/kernel.h>
   9 #include <linux/export.h>
  10 #include <linux/init.h>
  11 #include <linux/smp.h>
  12 #include <linux/threads.h>
  13
  14 #include <asm/spitfire.h>
  15 #include <asm/pgtable.h>
  16 #include <asm/oplib.h>
  17 #include <asm/setup.h>
  18 #include <asm/page.h>
  19 #include <asm/head.h>
  20 #include <asm/psr.h>
  21 #include <asm/mbus.h>
  22 #include <asm/cpudata.h>
  23
  24 #include "kernel.h"
  25 #include "entry.h"
  26
  27 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
  28 EXPORT_PER_CPU_SYMBOL(__cpu_data);
  29
  30 int ncpus_probed;
  31 unsigned int fsr_storage;
  32
  33 struct cpu_info {
  34         int psr_vers;
  35         const char *name;
  36         const char *pmu_name;
  37 };
  38
  39 struct fpu_info {
  40         int fp_vers;
  41         const char *name;
  42 };
  43
  44 #define NOCPU 8
  45 #define NOFPU 8
  46
  47 struct manufacturer_info {
  48         int psr_impl;
  49         struct cpu_info cpu_info[NOCPU];
  50         struct fpu_info fpu_info[NOFPU];
  51 };
  52
  53 #define CPU(ver, _name) \
  54 { .psr_vers = ver, .name = _name }
  55
  56 #define CPU_PMU(ver, _name, _pmu_name)  \
  57 { .psr_vers = ver, .name = _name, .pmu_name = _pmu_name }
  58
  59 #define FPU(ver, _name) \
  60 { .fp_vers = ver, .name = _name }
  61
  62 static const struct manufacturer_info __initconst manufacturer_info[] = {
  63 {
  64         0,
  65         /* Sun4/100, 4/200, SLC */
  66         .cpu_info = {
  67                 CPU(0, "Fujitsu  MB86900/1A or LSI L64831 SparcKIT-40"),
  68                 /* borned STP1012PGA */
  69                 CPU(4,  "Fujitsu  MB86904"),
  70                 CPU(5, "Fujitsu TurboSparc MB86907"),
  71                 CPU(-1, NULL)
  72         },
  73         .fpu_info = {
  74                 FPU(0, "Fujitsu MB86910 or Weitek WTL1164/5"),
  75                 FPU(1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"),
  76                 FPU(2, "LSI Logic L64802 or Texas Instruments ACT8847"),
  77                 /* SparcStation SLC, SparcStation1 */
  78                 FPU(3, "Weitek WTL3170/2"),
  79                 /* SPARCstation-5 */
  80                 FPU(4, "Lsi Logic/Meiko L64804 or compatible"),
  81                 FPU(-1, NULL)
  82         }
  83 },{
  84         1,
  85         .cpu_info = {
  86                 /* SparcStation2, SparcServer 490 & 690 */
  87                 CPU(0, "LSI Logic Corporation - L64811"),
  88                 /* SparcStation2 */
  89                 CPU(1, "Cypress/ROSS CY7C601"),
  90                 /* Embedded controller */
  91                 CPU(3, "Cypress/ROSS CY7C611"),
  92                 /* Ross Technologies HyperSparc */
  93                 CPU(0xf, "ROSS HyperSparc RT620"),
  94                 CPU(0xe, "ROSS HyperSparc RT625 or RT626"),
  95                 CPU(-1, NULL)
  96         },
  97         .fpu_info = {
  98                 FPU(0, "ROSS HyperSparc combined IU/FPU"),
  99                 FPU(1, "Lsi Logic L64814"),
 100                 FPU(2, "Texas Instruments TMS390-C602A"),
 101                 FPU(3, "Cypress CY7C602 FPU"),
 102                 FPU(-1, NULL)
 103         }
 104 },{
 105         2,
 106         .cpu_info = {
 107                 /* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
 108                 /* Someone please write the code to support this beast! ;) */
 109                 CPU(0, "Bipolar Integrated Technology - B5010"),
 110                 CPU(-1, NULL)
 111         },
 112         .fpu_info = {
 113                 FPU(-1, NULL)
 114         }
 115 },{
 116         3,
 117         .cpu_info = {
 118                 CPU(0, "LSI Logic Corporation - unknown-type"),
 119                 CPU(-1, NULL)
 120         },
 121         .fpu_info = {
 122                 FPU(-1, NULL)
 123         }
 124 },{
 125         PSR_IMPL_TI,
 126         .cpu_info = {
 127                 CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
 128                 /* SparcClassic  --  borned STP1010TAB-50*/
 129                 CPU(1, "Texas Instruments, Inc. - MicroSparc"),
 130                 CPU(2, "Texas Instruments, Inc. - MicroSparc II"),
 131                 CPU(3, "Texas Instruments, Inc. - SuperSparc 51"),
 132                 CPU(4, "Texas Instruments, Inc. - SuperSparc 61"),
 133                 CPU(5, "Texas Instruments, Inc. - unknown"),
 134                 CPU(-1, NULL)
 135         },
 136         .fpu_info = {
 137                 /* SuperSparc 50 module */
 138                 FPU(0, "SuperSparc on-chip FPU"),
 139                 /* SparcClassic */
 140                 FPU(4, "TI MicroSparc on chip FPU"),
 141                 FPU(-1, NULL)
 142         }
 143 },{
 144         5,
 145         .cpu_info = {
 146                 CPU(0, "Matsushita - MN10501"),
 147                 CPU(-1, NULL)
 148         },
 149         .fpu_info = {
 150                 FPU(0, "Matsushita MN10501"),
 151                 FPU(-1, NULL)
 152         }
 153 },{
 154         6,
 155         .cpu_info = {
 156                 CPU(0, "Philips Corporation - unknown"),
 157                 CPU(-1, NULL)
 158         },
 159         .fpu_info = {
 160                 FPU(-1, NULL)
 161         }
 162 },{
 163         7,
 164         .cpu_info = {
 165                 CPU(0, "Harvest VLSI Design Center, Inc. - unknown"),
 166                 CPU(-1, NULL)
 167         },
 168         .fpu_info = {
 169                 FPU(-1, NULL)
 170         }
 171 },{
 172         8,
 173         .cpu_info = {
 174                 CPU(0, "Systems and Processes Engineering Corporation (SPEC)"),
 175                 CPU(-1, NULL)
 176         },
 177         .fpu_info = {
 178                 FPU(-1, NULL)
 179         }
 180 },{
 181         9,
 182         .cpu_info = {
 183                 /* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
 184                 CPU(0, "Fujitsu or Weitek Power-UP"),
 185                 CPU(1, "Fujitsu or Weitek Power-UP"),
 186                 CPU(2, "Fujitsu or Weitek Power-UP"),
 187                 CPU(3, "Fujitsu or Weitek Power-UP"),
 188                 CPU(-1, NULL)
 189         },
 190         .fpu_info = {
 191                 FPU(3, "Fujitsu or Weitek on-chip FPU"),
 192                 FPU(-1, NULL)
 193         }
 194 },{
 195         PSR_IMPL_LEON,          /* Aeroflex Gaisler */
 196         .cpu_info = {
 197                 CPU(3, "LEON"),
 198                 CPU(-1, NULL)
 199         },
 200         .fpu_info = {
 201                 FPU(2, "GRFPU"),
 202                 FPU(3, "GRFPU-Lite"),
 203                 FPU(-1, NULL)
 204         }
 205 },{
 206         0x17,
 207         .cpu_info = {
 208                 CPU_PMU(0x10, "TI UltraSparc I   (SpitFire)", "ultra12"),
 209                 CPU_PMU(0x11, "TI UltraSparc II  (BlackBird)", "ultra12"),
 210                 CPU_PMU(0x12, "TI UltraSparc IIi (Sabre)", "ultra12"),
 211                 CPU_PMU(0x13, "TI UltraSparc IIe (Hummingbird)", "ultra12"),
 212                 CPU(-1, NULL)
 213         },
 214         .fpu_info = {
 215                 FPU(0x10, "UltraSparc I integrated FPU"),
 216                 FPU(0x11, "UltraSparc II integrated FPU"),
 217                 FPU(0x12, "UltraSparc IIi integrated FPU"),
 218                 FPU(0x13, "UltraSparc IIe integrated FPU"),
 219                 FPU(-1, NULL)
 220         }
 221 },{
 222         0x22,
 223         .cpu_info = {
 224                 CPU_PMU(0x10, "TI UltraSparc I   (SpitFire)", "ultra12"),
 225                 CPU(-1, NULL)
 226         },
 227         .fpu_info = {
 228                 FPU(0x10, "UltraSparc I integrated FPU"),
 229                 FPU(-1, NULL)
 230         }
 231 },{
 232         0x3e,
 233         .cpu_info = {
 234                 CPU_PMU(0x14, "TI UltraSparc III (Cheetah)", "ultra3"),
 235                 CPU_PMU(0x15, "TI UltraSparc III+ (Cheetah+)", "ultra3+"),
 236                 CPU_PMU(0x16, "TI UltraSparc IIIi (Jalapeno)", "ultra3i"),
 237                 CPU_PMU(0x18, "TI UltraSparc IV (Jaguar)", "ultra3+"),
 238                 CPU_PMU(0x19, "TI UltraSparc IV+ (Panther)", "ultra4+"),
 239                 CPU_PMU(0x22, "TI UltraSparc IIIi+ (Serrano)", "ultra3i"),
 240                 CPU(-1, NULL)
 241         },
 242         .fpu_info = {
 243                 FPU(0x14, "UltraSparc III integrated FPU"),
 244                 FPU(0x15, "UltraSparc III+ integrated FPU"),
 245                 FPU(0x16, "UltraSparc IIIi integrated FPU"),
 246                 FPU(0x18, "UltraSparc IV integrated FPU"),
 247                 FPU(0x19, "UltraSparc IV+ integrated FPU"),
 248                 FPU(0x22, "UltraSparc IIIi+ integrated FPU"),
 249                 FPU(-1, NULL)
 250         }
 251 }};
 252
 253 /* In order to get the fpu type correct, you need to take the IDPROM's
 254  * machine type value into consideration too.  I will fix this.
 255  */
 256
 257 static const char *sparc_cpu_type;
 258 static const char *sparc_fpu_type;
 259 const char *sparc_pmu_type;
 260
 261
 262 static void __init set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)
 263 {
 264         const struct manufacturer_info *manuf;
 265         int i;
 266
 267         sparc_cpu_type = NULL;
 268         sparc_fpu_type = NULL;
 269         sparc_pmu_type = NULL;
 270         manuf = NULL;
 271
 272         for (i = 0; i < ARRAY_SIZE(manufacturer_info); i++)
 273         {
 274                 if (psr_impl == manufacturer_info[i].psr_impl) {
 275                         manuf = &manufacturer_info[i];
 276                         break;
 277                 }
 278         }
 279         if (manuf != NULL)
 280         {
 281                 const struct cpu_info *cpu;
 282                 const struct fpu_info *fpu;
 283
 284                 cpu = &manuf->cpu_info[0];
 285                 while (cpu->psr_vers != -1)
 286                 {
 287                         if (cpu->psr_vers == psr_vers) {
 288                                 sparc_cpu_type = cpu->name;
 289                                 sparc_pmu_type = cpu->pmu_name;
 290                                 sparc_fpu_type = "No FPU";
 291                                 break;
 292                         }
 293                         cpu++;
 294                 }
 295                 fpu =  &manuf->fpu_info[0];
 296                 while (fpu->fp_vers != -1)
 297                 {
 298                         if (fpu->fp_vers == fpu_vers) {
 299                                 sparc_fpu_type = fpu->name;
 300                                 break;
 301                         }
 302                         fpu++;
 303                 }
 304         }
 305         if (sparc_cpu_type == NULL)
 306         {
 307                 printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
 308                        psr_impl, psr_vers);
 309                 sparc_cpu_type = "Unknown CPU";
 310         }
 311         if (sparc_fpu_type == NULL)
 312         {
 313                 printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
 314                        psr_impl, fpu_vers);
 315                 sparc_fpu_type = "Unknown FPU";
 316         }
 317         if (sparc_pmu_type == NULL)
 318                 sparc_pmu_type = "Unknown PMU";
 319 }
 320
 321 #ifdef CONFIG_SPARC32
 322 static int show_cpuinfo(struct seq_file *m, void *__unused)
 323 {
 324         seq_printf(m,
 325                    "cpu\t\t: %s\n"
 326                    "fpu\t\t: %s\n"
 327                    "promlib\t\t: Version %d Revision %d\n"
 328                    "prom\t\t: %d.%d\n"
 329                    "type\t\t: %s\n"
 330                    "ncpus probed\t: %d\n"
 331                    "ncpus active\t: %d\n"
 332 #ifndef CONFIG_SMP
 333                    "CPU0Bogo\t: %lu.%02lu\n"
 334                    "CPU0ClkTck\t: %ld\n"
 335 #endif
 336                    ,
 337                    sparc_cpu_type,
 338                    sparc_fpu_type ,
 339                    romvec->pv_romvers,
 340                    prom_rev,
 341                    romvec->pv_printrev >> 16,
 342                    romvec->pv_printrev & 0xffff,
 343                    &cputypval[0],
 344                    ncpus_probed,
 345                    num_online_cpus()
 346 #ifndef CONFIG_SMP
 347                    , cpu_data(0).udelay_val/(500000/HZ),
 348                    (cpu_data(0).udelay_val/(5000/HZ)) % 100,
 349                    cpu_data(0).clock_tick
 350 #endif
 351                 );
 352
 353 #ifdef CONFIG_SMP
 354         smp_bogo(m);
 355 #endif
 356         mmu_info(m);
 357 #ifdef CONFIG_SMP
 358         smp_info(m);
 359 #endif
 360         return 0;
 361 }
 362 #endif /* CONFIG_SPARC32 */
 363
 364 #ifdef CONFIG_SPARC64
 365 unsigned int dcache_parity_tl1_occurred;
 366 unsigned int icache_parity_tl1_occurred;
 367
 368
 369 static int show_cpuinfo(struct seq_file *m, void *__unused)
 370 {
 371         seq_printf(m,
 372                    "cpu\t\t: %s\n"
 373                    "fpu\t\t: %s\n"
 374                    "pmu\t\t: %s\n"
 375                    "prom\t\t: %s\n"
 376                    "type\t\t: %s\n"
 377                    "ncpus probed\t: %d\n"
 378                    "ncpus active\t: %d\n"
 379                    "D$ parity tl1\t: %u\n"
 380                    "I$ parity tl1\t: %u\n"
 381 #ifndef CONFIG_SMP
 382                    "Cpu0ClkTck\t: %016lx\n"
 383 #endif
 384                    ,
 385                    sparc_cpu_type,
 386                    sparc_fpu_type,
 387                    sparc_pmu_type,
 388                    prom_version,
 389                    ((tlb_type == hypervisor) ?
 390                     "sun4v" :
 391                     "sun4u"),
 392                    ncpus_probed,
 393                    num_online_cpus(),
 394                    dcache_parity_tl1_occurred,
 395                    icache_parity_tl1_occurred
 396 #ifndef CONFIG_SMP
 397                    , cpu_data(0).clock_tick
 398 #endif
 399                 );
 400         cpucap_info(m);
 401 #ifdef CONFIG_SMP
 402         smp_bogo(m);
 403 #endif
 404         mmu_info(m);
 405 #ifdef CONFIG_SMP
 406         smp_info(m);
 407 #endif
 408         return 0;
 409 }
 410 #endif /* CONFIG_SPARC64 */
 411
 412 static void *c_start(struct seq_file *m, loff_t *pos)
 413 {
 414         /* The pointer we are returning is arbitrary,
 415          * it just has to be non-NULL and not IS_ERR
 416          * in the success case.
 417          */
 418         return *pos == 0 ? &c_start : NULL;
 419 }
 420
 421 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 422 {
 423         ++*pos;
 424         return c_start(m, pos);
 425 }
 426
 427 static void c_stop(struct seq_file *m, void *v)
 428 {
 429 }
 430
 431 const struct seq_operations cpuinfo_op = {
 432         .start =c_start,
 433         .next = c_next,
 434         .stop = c_stop,
 435         .show = show_cpuinfo,
 436 };
 437
 438 #ifdef CONFIG_SPARC32
 439 static int __init cpu_type_probe(void)
 440 {
 441         int psr_impl, psr_vers, fpu_vers;
 442         int psr;
 443
 444         psr_impl = ((get_psr() >> PSR_IMPL_SHIFT) & PSR_IMPL_SHIFTED_MASK);
 445         psr_vers = ((get_psr() >> PSR_VERS_SHIFT) & PSR_VERS_SHIFTED_MASK);
 446
 447         psr = get_psr();
 448         put_psr(psr | PSR_EF);
 449
 450         if (psr_impl == PSR_IMPL_LEON)
 451                 fpu_vers = get_psr() & PSR_EF ? ((get_fsr() >> 17) & 0x7) : 7;
 452         else
 453                 fpu_vers = ((get_fsr() >> 17) & 0x7);
 454
 455         put_psr(psr);
 456
 457         set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
 458
 459         return 0;
 460 }
 461 #endif /* CONFIG_SPARC32 */
 462
 463 #ifdef CONFIG_SPARC64
 464 static void __init sun4v_cpu_probe(void)
 465 {
 466         switch (sun4v_chip_type) {
 467         case SUN4V_CHIP_NIAGARA1:
 468                 sparc_cpu_type = "UltraSparc T1 (Niagara)";
 469                 sparc_fpu_type = "UltraSparc T1 integrated FPU";
 470                 sparc_pmu_type = "niagara";
 471                 break;
 472
 473         case SUN4V_CHIP_NIAGARA2:
 474                 sparc_cpu_type = "UltraSparc T2 (Niagara2)";
 475                 sparc_fpu_type = "UltraSparc T2 integrated FPU";
 476                 sparc_pmu_type = "niagara2";
 477                 break;
 478
 479         case SUN4V_CHIP_NIAGARA3:
 480                 sparc_cpu_type = "UltraSparc T3 (Niagara3)";
 481                 sparc_fpu_type = "UltraSparc T3 integrated FPU";
 482                 sparc_pmu_type = "niagara3";
 483                 break;
 484
 485         case SUN4V_CHIP_NIAGARA4:
 486                 sparc_cpu_type = "UltraSparc T4 (Niagara4)";
 487                 sparc_fpu_type = "UltraSparc T4 integrated FPU";
 488                 sparc_pmu_type = "niagara4";
 489                 break;
 490
 491         case SUN4V_CHIP_NIAGARA5:
 492                 sparc_cpu_type = "UltraSparc T5 (Niagara5)";
 493                 sparc_fpu_type = "UltraSparc T5 integrated FPU";
 494                 sparc_pmu_type = "niagara5";
 495                 break;
 496
 497         case SUN4V_CHIP_SPARC_M6:
 498                 sparc_cpu_type = "SPARC-M6";
 499                 sparc_fpu_type = "SPARC-M6 integrated FPU";
 500                 sparc_pmu_type = "sparc-m6";
 501                 break;
 502
 503         case SUN4V_CHIP_SPARC_M7:
 504                 sparc_cpu_type = "SPARC-M7";
 505                 sparc_fpu_type = "SPARC-M7 integrated FPU";
 506                 sparc_pmu_type = "sparc-m7";
 507                 break;
 508
 509         case SUN4V_CHIP_SPARC_M8:
 510                 sparc_cpu_type = "SPARC-M8";
 511                 sparc_fpu_type = "SPARC-M8 integrated FPU";
 512                 sparc_pmu_type = "sparc-m8";
 513                 break;
 514
 515         case SUN4V_CHIP_SPARC_SN:
 516                 sparc_cpu_type = "SPARC-SN";
 517                 sparc_fpu_type = "SPARC-SN integrated FPU";
 518                 sparc_pmu_type = "sparc-sn";
 519                 break;
 520
 521         case SUN4V_CHIP_SPARC64X:
 522                 sparc_cpu_type = "SPARC64-X";
 523                 sparc_fpu_type = "SPARC64-X integrated FPU";
 524                 sparc_pmu_type = "sparc64-x";
 525                 break;
 526
 527         default:
 528                 printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
 529                        prom_cpu_compatible);
 530                 sparc_cpu_type = "Unknown SUN4V CPU";
 531                 sparc_fpu_type = "Unknown SUN4V FPU";
 532                 sparc_pmu_type = "Unknown SUN4V PMU";
 533                 break;
 534         }
 535 }
 536
 537 static int __init cpu_type_probe(void)
 538 {
 539         if (tlb_type == hypervisor) {
 540                 sun4v_cpu_probe();
 541         } else {
 542                 unsigned long ver;
 543                 int manuf, impl;
 544
 545                 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
 546
 547                 manuf = ((ver >> 48) & 0xffff);
 548                 impl = ((ver >> 32) & 0xffff);
 549                 set_cpu_and_fpu(manuf, impl, impl);
 550         }
 551         return 0;
 552 }
 553 #endif /* CONFIG_SPARC64 */
 554
 555 early_initcall(cpu_type_probe);