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/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/init.h>
  10 #include <linux/smp.h>
  11 #include <linux/threads.h>
  12
  13 #include <asm/spitfire.h>
  14 #include <asm/oplib.h>
  15 #include <asm/page.h>
  16 #include <asm/head.h>
  17 #include <asm/psr.h>
  18 #include <asm/mbus.h>
  19 #include <asm/cpudata.h>
  20
  21 #include "kernel.h"
  22
  23 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
  24 EXPORT_PER_CPU_SYMBOL(__cpu_data);
  25
  26 struct cpu_info {
  27         int psr_vers;
  28         const char *name;
  29         const char *pmu_name;
  30 };
  31
  32 struct fpu_info {
  33         int fp_vers;
  34         const char *name;
  35 };
  36
  37 #define NOCPU 8
  38 #define NOFPU 8
  39
  40 struct manufacturer_info {
  41         int psr_impl;
  42         struct cpu_info cpu_info[NOCPU];
  43         struct fpu_info fpu_info[NOFPU];
  44 };
  45
  46 #define CPU(ver, _name) \
  47 { .psr_vers = ver, .name = _name }
  48
  49 #define CPU_PMU(ver, _name, _pmu_name)  \
  50 { .psr_vers = ver, .name = _name, .pmu_name = _pmu_name }
  51
  52 #define FPU(ver, _name) \
  53 { .fp_vers = ver, .name = _name }
  54
  55 static const struct manufacturer_info __initconst manufacturer_info[] = {
  56 {
  57         0,
  58         /* Sun4/100, 4/200, SLC */
  59         .cpu_info = {
  60                 CPU(0, "Fujitsu  MB86900/1A or LSI L64831 SparcKIT-40"),
  61                 /* borned STP1012PGA */
  62                 CPU(4,  "Fujitsu  MB86904"),
  63                 CPU(5, "Fujitsu TurboSparc MB86907"),
  64                 CPU(-1, NULL)
  65         },
  66         .fpu_info = {
  67                 FPU(0, "Fujitsu MB86910 or Weitek WTL1164/5"),
  68                 FPU(1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"),
  69                 FPU(2, "LSI Logic L64802 or Texas Instruments ACT8847"),
  70                 /* SparcStation SLC, SparcStation1 */
  71                 FPU(3, "Weitek WTL3170/2"),
  72                 /* SPARCstation-5 */
  73                 FPU(4, "Lsi Logic/Meiko L64804 or compatible"),
  74                 FPU(-1, NULL)
  75         }
  76 },{
  77         1,
  78         .cpu_info = {
  79                 /* SparcStation2, SparcServer 490 & 690 */
  80                 CPU(0, "LSI Logic Corporation - L64811"),
  81                 /* SparcStation2 */
  82                 CPU(1, "Cypress/ROSS CY7C601"),
  83                 /* Embedded controller */
  84                 CPU(3, "Cypress/ROSS CY7C611"),
  85                 /* Ross Technologies HyperSparc */
  86                 CPU(0xf, "ROSS HyperSparc RT620"),
  87                 CPU(0xe, "ROSS HyperSparc RT625 or RT626"),
  88                 CPU(-1, NULL)
  89         },
  90         .fpu_info = {
  91                 FPU(0, "ROSS HyperSparc combined IU/FPU"),
  92                 FPU(1, "Lsi Logic L64814"),
  93                 FPU(2, "Texas Instruments TMS390-C602A"),
  94                 FPU(3, "Cypress CY7C602 FPU"),
  95                 FPU(-1, NULL)
  96         }
  97 },{
  98         2,
  99         .cpu_info = {
 100                 /* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
 101                 /* Someone please write the code to support this beast! ;) */
 102                 CPU(0, "Bipolar Integrated Technology - B5010"),
 103                 CPU(-1, NULL)
 104         },
 105         .fpu_info = {
 106                 FPU(-1, NULL)
 107         }
 108 },{
 109         3,
 110         .cpu_info = {
 111                 CPU(0, "LSI Logic Corporation - unknown-type"),
 112                 CPU(-1, NULL)
 113         },
 114         .fpu_info = {
 115                 FPU(-1, NULL)
 116         }
 117 },{
 118         4,
 119         .cpu_info = {
 120                 CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
 121                 /* SparcClassic  --  borned STP1010TAB-50*/
 122                 CPU(1, "Texas Instruments, Inc. - MicroSparc"),
 123                 CPU(2, "Texas Instruments, Inc. - MicroSparc II"),
 124                 CPU(3, "Texas Instruments, Inc. - SuperSparc 51"),
 125                 CPU(4, "Texas Instruments, Inc. - SuperSparc 61"),
 126                 CPU(5, "Texas Instruments, Inc. - unknown"),
 127                 CPU(-1, NULL)
 128         },
 129         .fpu_info = {
 130                 /* SuperSparc 50 module */
 131                 FPU(0, "SuperSparc on-chip FPU"),
 132                 /* SparcClassic */
 133                 FPU(4, "TI MicroSparc on chip FPU"),
 134                 FPU(-1, NULL)
 135         }
 136 },{
 137         5,
 138         .cpu_info = {
 139                 CPU(0, "Matsushita - MN10501"),
 140                 CPU(-1, NULL)
 141         },
 142         .fpu_info = {
 143                 FPU(0, "Matsushita MN10501"),
 144                 FPU(-1, NULL)
 145         }
 146 },{
 147         6,
 148         .cpu_info = {
 149                 CPU(0, "Philips Corporation - unknown"),
 150                 CPU(-1, NULL)
 151         },
 152         .fpu_info = {
 153                 FPU(-1, NULL)
 154         }
 155 },{
 156         7,
 157         .cpu_info = {
 158                 CPU(0, "Harvest VLSI Design Center, Inc. - unknown"),
 159                 CPU(-1, NULL)
 160         },
 161         .fpu_info = {
 162                 FPU(-1, NULL)
 163         }
 164 },{
 165         8,
 166         .cpu_info = {
 167                 CPU(0, "Systems and Processes Engineering Corporation (SPEC)"),
 168                 CPU(-1, NULL)
 169         },
 170         .fpu_info = {
 171                 FPU(-1, NULL)
 172         }
 173 },{
 174         9,
 175         .cpu_info = {
 176                 /* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
 177                 CPU(0, "Fujitsu or Weitek Power-UP"),
 178                 CPU(1, "Fujitsu or Weitek Power-UP"),
 179                 CPU(2, "Fujitsu or Weitek Power-UP"),
 180                 CPU(3, "Fujitsu or Weitek Power-UP"),
 181                 CPU(-1, NULL)
 182         },
 183         .fpu_info = {
 184                 FPU(3, "Fujitsu or Weitek on-chip FPU"),
 185                 FPU(-1, NULL)
 186         }
 187 },{
 188         0xF,            /* Aeroflex Gaisler */
 189         .cpu_info = {
 190                 CPU(3, "LEON"),
 191                 CPU(-1, NULL)
 192         },
 193         .fpu_info = {
 194                 FPU(2, "GRFPU"),
 195                 FPU(3, "GRFPU-Lite"),
 196                 FPU(-1, NULL)
 197         }
 198 },{
 199         0x17,
 200         .cpu_info = {
 201                 CPU_PMU(0x10, "TI UltraSparc I   (SpitFire)", "ultra12"),
 202                 CPU_PMU(0x11, "TI UltraSparc II  (BlackBird)", "ultra12"),
 203                 CPU_PMU(0x12, "TI UltraSparc IIi (Sabre)", "ultra12"),
 204                 CPU_PMU(0x13, "TI UltraSparc IIe (Hummingbird)", "ultra12"),
 205                 CPU(-1, NULL)
 206         },
 207         .fpu_info = {
 208                 FPU(0x10, "UltraSparc I integrated FPU"),
 209                 FPU(0x11, "UltraSparc II integrated FPU"),
 210                 FPU(0x12, "UltraSparc IIi integrated FPU"),
 211                 FPU(0x13, "UltraSparc IIe integrated FPU"),
 212                 FPU(-1, NULL)
 213         }
 214 },{
 215         0x22,
 216         .cpu_info = {
 217                 CPU_PMU(0x10, "TI UltraSparc I   (SpitFire)", "ultra12"),
 218                 CPU(-1, NULL)
 219         },
 220         .fpu_info = {
 221                 FPU(0x10, "UltraSparc I integrated FPU"),
 222                 FPU(-1, NULL)
 223         }
 224 },{
 225         0x3e,
 226         .cpu_info = {
 227                 CPU_PMU(0x14, "TI UltraSparc III (Cheetah)", "ultra3"),
 228                 CPU_PMU(0x15, "TI UltraSparc III+ (Cheetah+)", "ultra3+"),
 229                 CPU_PMU(0x16, "TI UltraSparc IIIi (Jalapeno)", "ultra3i"),
 230                 CPU_PMU(0x18, "TI UltraSparc IV (Jaguar)", "ultra3+"),
 231                 CPU_PMU(0x19, "TI UltraSparc IV+ (Panther)", "ultra4+"),
 232                 CPU_PMU(0x22, "TI UltraSparc IIIi+ (Serrano)", "ultra3i"),
 233                 CPU(-1, NULL)
 234         },
 235         .fpu_info = {
 236                 FPU(0x14, "UltraSparc III integrated FPU"),
 237                 FPU(0x15, "UltraSparc III+ integrated FPU"),
 238                 FPU(0x16, "UltraSparc IIIi integrated FPU"),
 239                 FPU(0x18, "UltraSparc IV integrated FPU"),
 240                 FPU(0x19, "UltraSparc IV+ integrated FPU"),
 241                 FPU(0x22, "UltraSparc IIIi+ integrated FPU"),
 242                 FPU(-1, NULL)
 243         }
 244 }};
 245
 246 /* In order to get the fpu type correct, you need to take the IDPROM's
 247  * machine type value into consideration too.  I will fix this.
 248  */
 249
 250 const char *sparc_cpu_type;
 251 const char *sparc_fpu_type;
 252 const char *sparc_pmu_type;
 253
 254 unsigned int fsr_storage;
 255
 256 static void set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)
 257 {
 258         const struct manufacturer_info *manuf;
 259         int i;
 260
 261         sparc_cpu_type = NULL;
 262         sparc_fpu_type = NULL;
 263         sparc_pmu_type = NULL;
 264         manuf = NULL;
 265
 266         for (i = 0; i < ARRAY_SIZE(manufacturer_info); i++)
 267         {
 268                 if (psr_impl == manufacturer_info[i].psr_impl) {
 269                         manuf = &manufacturer_info[i];
 270                         break;
 271                 }
 272         }
 273         if (manuf != NULL)
 274         {
 275                 const struct cpu_info *cpu;
 276                 const struct fpu_info *fpu;
 277
 278                 cpu = &manuf->cpu_info[0];
 279                 while (cpu->psr_vers != -1)
 280                 {
 281                         if (cpu->psr_vers == psr_vers) {
 282                                 sparc_cpu_type = cpu->name;
 283                                 sparc_pmu_type = cpu->pmu_name;
 284                                 sparc_fpu_type = "No FPU";
 285                                 break;
 286                         }
 287                         cpu++;
 288                 }
 289                 fpu =  &manuf->fpu_info[0];
 290                 while (fpu->fp_vers != -1)
 291                 {
 292                         if (fpu->fp_vers == fpu_vers) {
 293                                 sparc_fpu_type = fpu->name;
 294                                 break;
 295                         }
 296                         fpu++;
 297                 }
 298         }
 299         if (sparc_cpu_type == NULL)
 300         {
 301                 printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
 302                        psr_impl, psr_vers);
 303                 sparc_cpu_type = "Unknown CPU";
 304         }
 305         if (sparc_fpu_type == NULL)
 306         {
 307                 printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
 308                        psr_impl, fpu_vers);
 309                 sparc_fpu_type = "Unknown FPU";
 310         }
 311         if (sparc_pmu_type == NULL)
 312                 sparc_pmu_type = "Unknown PMU";
 313 }
 314
 315 #ifdef CONFIG_SPARC32
 316 void __cpuinit cpu_probe(void)
 317 {
 318         int psr_impl, psr_vers, fpu_vers;
 319         int psr;
 320
 321         psr_impl = ((get_psr() >> 28) & 0xf);
 322         psr_vers = ((get_psr() >> 24) & 0xf);
 323
 324         psr = get_psr();
 325         put_psr(psr | PSR_EF);
 326 #ifdef CONFIG_SPARC_LEON
 327         fpu_vers = 7;
 328 #else
 329         fpu_vers = ((get_fsr() >> 17) & 0x7);
 330 #endif
 331
 332         put_psr(psr);
 333
 334         set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
 335 }
 336 #else
 337 static void __init sun4v_cpu_probe(void)
 338 {
 339         switch (sun4v_chip_type) {
 340         case SUN4V_CHIP_NIAGARA1:
 341                 sparc_cpu_type = "UltraSparc T1 (Niagara)";
 342                 sparc_fpu_type = "UltraSparc T1 integrated FPU";
 343                 sparc_pmu_type = "niagara";
 344                 break;
 345
 346         case SUN4V_CHIP_NIAGARA2:
 347                 sparc_cpu_type = "UltraSparc T2 (Niagara2)";
 348                 sparc_fpu_type = "UltraSparc T2 integrated FPU";
 349                 sparc_pmu_type = "niagara2";
 350                 break;
 351
 352         default:
 353                 printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
 354                        prom_cpu_compatible);
 355                 sparc_cpu_type = "Unknown SUN4V CPU";
 356                 sparc_fpu_type = "Unknown SUN4V FPU";
 357                 break;
 358         }
 359 }
 360
 361 static int __init cpu_type_probe(void)
 362 {
 363         if (tlb_type == hypervisor) {
 364                 sun4v_cpu_probe();
 365         } else {
 366                 unsigned long ver;
 367                 int manuf, impl;
 368
 369                 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
 370
 371                 manuf = ((ver >> 48) & 0xffff);
 372                 impl = ((ver >> 32) & 0xffff);
 373                 set_cpu_and_fpu(manuf, impl, impl);
 374         }
 375         return 0;
 376 }
 377
 378 early_initcall(cpu_type_probe);
 379 #endif