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