cpu_subr.c revision 1.28.16.5
1 /* $NetBSD: cpu_subr.c,v 1.28.16.5 2007/10/04 18:23:39 macallan Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Matt Thomas. 5 * Copyright (c) 2001 Tsubai Masanari. 6 * Copyright (c) 1998, 1999, 2001 Internet Research Institute, Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by 20 * Internet Research Institute, Inc. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.28.16.5 2007/10/04 18:23:39 macallan Exp $"); 38 39 #include "opt_ppcparam.h" 40 #include "opt_multiprocessor.h" 41 #include "opt_altivec.h" 42 #include "sysmon_envsys.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/device.h> 47 #include <sys/malloc.h> 48 49 #include <uvm/uvm_extern.h> 50 51 #include <powerpc/oea/hid.h> 52 #include <powerpc/oea/hid_601.h> 53 #include <powerpc/spr.h> 54 55 #include <dev/sysmon/sysmonvar.h> 56 57 static void cpu_enable_l2cr(register_t); 58 static void cpu_enable_l3cr(register_t); 59 static void cpu_config_l2cr(int); 60 static void cpu_config_l3cr(int); 61 static void cpu_probe_speed(struct cpu_info *); 62 static void cpu_idlespin(void); 63 #if NSYSMON_ENVSYS > 0 64 static void cpu_tau_setup(struct cpu_info *); 65 static int cpu_tau_gtredata(struct sysmon_envsys *, envsys_data_t *); 66 #endif 67 68 int cpu; 69 int ncpus; 70 71 struct fmttab { 72 register_t fmt_mask; 73 register_t fmt_value; 74 const char *fmt_string; 75 }; 76 77 static const struct fmttab cpu_7450_l2cr_formats[] = { 78 { L2CR_L2E, 0, " disabled" }, 79 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, 80 { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, 81 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, 82 { L2CR_L2E, ~0, " 256KB L2 cache" }, 83 { 0, 0, NULL } 84 }; 85 86 static const struct fmttab cpu_7448_l2cr_formats[] = { 87 { L2CR_L2E, 0, " disabled" }, 88 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, 89 { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, 90 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, 91 { L2CR_L2E, ~0, " 1MB L2 cache" }, 92 { 0, 0, NULL } 93 }; 94 95 static const struct fmttab cpu_7457_l2cr_formats[] = { 96 { L2CR_L2E, 0, " disabled" }, 97 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, 98 { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, 99 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, 100 { L2CR_L2E, ~0, " 512KB L2 cache" }, 101 { 0, 0, NULL } 102 }; 103 104 static const struct fmttab cpu_7450_l3cr_formats[] = { 105 { L3CR_L3DO|L3CR_L3IO, L3CR_L3DO, " data-only" }, 106 { L3CR_L3DO|L3CR_L3IO, L3CR_L3IO, " instruction-only" }, 107 { L3CR_L3DO|L3CR_L3IO, L3CR_L3DO|L3CR_L3IO, " locked" }, 108 { L3CR_L3SIZ, L3SIZ_2M, " 2MB" }, 109 { L3CR_L3SIZ, L3SIZ_1M, " 1MB" }, 110 { L3CR_L3PE|L3CR_L3APE, L3CR_L3PE|L3CR_L3APE, " parity" }, 111 { L3CR_L3PE|L3CR_L3APE, L3CR_L3PE, " data-parity" }, 112 { L3CR_L3PE|L3CR_L3APE, L3CR_L3APE, " address-parity" }, 113 { L3CR_L3PE|L3CR_L3APE, 0, " no-parity" }, 114 { L3CR_L3SIZ, ~0, " L3 cache" }, 115 { L3CR_L3RT, L3RT_MSUG2_DDR, " (DDR SRAM)" }, 116 { L3CR_L3RT, L3RT_PIPELINE_LATE, " (LW SRAM)" }, 117 { L3CR_L3RT, L3RT_PB2_SRAM, " (PB2 SRAM)" }, 118 { L3CR_L3CLK, ~0, " at" }, 119 { L3CR_L3CLK, L3CLK_20, " 2:1" }, 120 { L3CR_L3CLK, L3CLK_25, " 2.5:1" }, 121 { L3CR_L3CLK, L3CLK_30, " 3:1" }, 122 { L3CR_L3CLK, L3CLK_35, " 3.5:1" }, 123 { L3CR_L3CLK, L3CLK_40, " 4:1" }, 124 { L3CR_L3CLK, L3CLK_50, " 5:1" }, 125 { L3CR_L3CLK, L3CLK_60, " 6:1" }, 126 { L3CR_L3CLK, ~0, " ratio" }, 127 { 0, 0, NULL }, 128 }; 129 130 static const struct fmttab cpu_ibm750_l2cr_formats[] = { 131 { L2CR_L2E, 0, " disabled" }, 132 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, 133 { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, 134 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, 135 { 0, ~0, " 512KB" }, 136 { L2CR_L2WT, L2CR_L2WT, " WT" }, 137 { L2CR_L2WT, 0, " WB" }, 138 { L2CR_L2PE, L2CR_L2PE, " with ECC" }, 139 { 0, ~0, " L2 cache" }, 140 { 0, 0, NULL } 141 }; 142 143 static const struct fmttab cpu_l2cr_formats[] = { 144 { L2CR_L2E, 0, " disabled" }, 145 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO, " data-only" }, 146 { L2CR_L2DO|L2CR_L2IO, L2CR_L2IO, " instruction-only" }, 147 { L2CR_L2DO|L2CR_L2IO, L2CR_L2DO|L2CR_L2IO, " locked" }, 148 { L2CR_L2PE, L2CR_L2PE, " parity" }, 149 { L2CR_L2PE, 0, " no-parity" }, 150 { L2CR_L2SIZ, L2SIZ_2M, " 2MB" }, 151 { L2CR_L2SIZ, L2SIZ_1M, " 1MB" }, 152 { L2CR_L2SIZ, L2SIZ_512K, " 512KB" }, 153 { L2CR_L2SIZ, L2SIZ_256K, " 256KB" }, 154 { L2CR_L2WT, L2CR_L2WT, " WT" }, 155 { L2CR_L2WT, 0, " WB" }, 156 { L2CR_L2E, ~0, " L2 cache" }, 157 { L2CR_L2RAM, L2RAM_FLOWTHRU_BURST, " (FB SRAM)" }, 158 { L2CR_L2RAM, L2RAM_PIPELINE_LATE, " (LW SRAM)" }, 159 { L2CR_L2RAM, L2RAM_PIPELINE_BURST, " (PB SRAM)" }, 160 { L2CR_L2CLK, ~0, " at" }, 161 { L2CR_L2CLK, L2CLK_10, " 1:1" }, 162 { L2CR_L2CLK, L2CLK_15, " 1.5:1" }, 163 { L2CR_L2CLK, L2CLK_20, " 2:1" }, 164 { L2CR_L2CLK, L2CLK_25, " 2.5:1" }, 165 { L2CR_L2CLK, L2CLK_30, " 3:1" }, 166 { L2CR_L2CLK, L2CLK_35, " 3.5:1" }, 167 { L2CR_L2CLK, L2CLK_40, " 4:1" }, 168 { L2CR_L2CLK, ~0, " ratio" }, 169 { 0, 0, NULL } 170 }; 171 172 static void cpu_fmttab_print(const struct fmttab *, register_t); 173 174 struct cputab { 175 const char name[8]; 176 uint16_t version; 177 uint16_t revfmt; 178 }; 179 #define REVFMT_MAJMIN 1 /* %u.%u */ 180 #define REVFMT_HEX 2 /* 0x%04x */ 181 #define REVFMT_DEC 3 /* %u */ 182 static const struct cputab models[] = { 183 { "601", MPC601, REVFMT_DEC }, 184 { "602", MPC602, REVFMT_DEC }, 185 { "603", MPC603, REVFMT_MAJMIN }, 186 { "603e", MPC603e, REVFMT_MAJMIN }, 187 { "603ev", MPC603ev, REVFMT_MAJMIN }, 188 { "G2", MPCG2, REVFMT_MAJMIN }, 189 { "604", MPC604, REVFMT_MAJMIN }, 190 { "604e", MPC604e, REVFMT_MAJMIN }, 191 { "604ev", MPC604ev, REVFMT_MAJMIN }, 192 { "620", MPC620, REVFMT_HEX }, 193 { "750", MPC750, REVFMT_MAJMIN }, 194 { "750FX", IBM750FX, REVFMT_MAJMIN }, 195 { "7400", MPC7400, REVFMT_MAJMIN }, 196 { "7410", MPC7410, REVFMT_MAJMIN }, 197 { "7450", MPC7450, REVFMT_MAJMIN }, 198 { "7455", MPC7455, REVFMT_MAJMIN }, 199 { "7457", MPC7457, REVFMT_MAJMIN }, 200 { "7447A", MPC7447A, REVFMT_MAJMIN }, 201 { "7448", MPC7448, REVFMT_MAJMIN }, 202 { "8240", MPC8240, REVFMT_MAJMIN }, 203 { "8245", MPC8245, REVFMT_MAJMIN }, 204 { "970", IBM970, REVFMT_MAJMIN }, 205 { "970FX", IBM970FX, REVFMT_MAJMIN }, 206 { "", 0, REVFMT_HEX } 207 }; 208 209 210 #ifdef MULTIPROCESSOR 211 struct cpu_info cpu_info[CPU_MAXNUM]; 212 #else 213 struct cpu_info cpu_info[1]; 214 #endif 215 216 int cpu_altivec; 217 int cpu_psluserset, cpu_pslusermod; 218 char cpu_model[80]; 219 220 void 221 cpu_fmttab_print(const struct fmttab *fmt, register_t data) 222 { 223 for (; fmt->fmt_mask != 0 || fmt->fmt_value != 0; fmt++) { 224 if ((~fmt->fmt_mask & fmt->fmt_value) != 0 || 225 (data & fmt->fmt_mask) == fmt->fmt_value) 226 aprint_normal("%s", fmt->fmt_string); 227 } 228 } 229 230 void 231 cpu_idlespin(void) 232 { 233 register_t msr; 234 235 if (powersave <= 0) 236 return; 237 238 __asm volatile( 239 "sync;" 240 "mfmsr %0;" 241 "oris %0,%0,%1@h;" /* enter power saving mode */ 242 "mtmsr %0;" 243 "isync;" 244 : "=r"(msr) 245 : "J"(PSL_POW)); 246 } 247 248 void 249 cpu_probe_cache(void) 250 { 251 u_int assoc, pvr, vers; 252 253 pvr = mfpvr(); 254 vers = pvr >> 16; 255 256 257 /* Presently common across almost all implementations. */ 258 curcpu()->ci_ci.dcache_line_size = CACHELINESIZE; 259 curcpu()->ci_ci.icache_line_size = CACHELINESIZE; 260 261 262 switch (vers) { 263 #define K *1024 264 case IBM750FX: 265 case MPC601: 266 case MPC750: 267 case MPC7447A: 268 case MPC7448: 269 case MPC7450: 270 case MPC7455: 271 case MPC7457: 272 curcpu()->ci_ci.dcache_size = 32 K; 273 curcpu()->ci_ci.icache_size = 32 K; 274 assoc = 8; 275 break; 276 case MPC603: 277 curcpu()->ci_ci.dcache_size = 8 K; 278 curcpu()->ci_ci.icache_size = 8 K; 279 assoc = 2; 280 break; 281 case MPC603e: 282 case MPC603ev: 283 case MPC604: 284 case MPC8240: 285 case MPC8245: 286 case MPCG2: 287 curcpu()->ci_ci.dcache_size = 16 K; 288 curcpu()->ci_ci.icache_size = 16 K; 289 assoc = 4; 290 break; 291 case MPC604e: 292 case MPC604ev: 293 curcpu()->ci_ci.dcache_size = 32 K; 294 curcpu()->ci_ci.icache_size = 32 K; 295 assoc = 4; 296 break; 297 case IBM970: 298 case IBM970FX: 299 curcpu()->ci_ci.dcache_size = 32 K; 300 curcpu()->ci_ci.icache_size = 64 K; 301 curcpu()->ci_ci.dcache_line_size = 128; 302 curcpu()->ci_ci.icache_line_size = 128; 303 assoc = 2; 304 break; 305 306 default: 307 curcpu()->ci_ci.dcache_size = PAGE_SIZE; 308 curcpu()->ci_ci.icache_size = PAGE_SIZE; 309 assoc = 1; 310 #undef K 311 } 312 313 /* 314 * Possibly recolor. 315 */ 316 uvm_page_recolor(atop(curcpu()->ci_ci.dcache_size / assoc)); 317 } 318 319 struct cpu_info * 320 cpu_attach_common(struct device *self, int id) 321 { 322 struct cpu_info *ci; 323 u_int pvr, vers; 324 325 ci = &cpu_info[id]; 326 #ifndef MULTIPROCESSOR 327 /* 328 * If this isn't the primary CPU, print an error message 329 * and just bail out. 330 */ 331 if (id != 0) { 332 aprint_normal(": ID %d\n", id); 333 aprint_normal("%s: processor off-line; multiprocessor support " 334 "not present in kernel\n", self->dv_xname); 335 return (NULL); 336 } 337 #endif 338 339 ci->ci_cpuid = id; 340 ci->ci_intrdepth = -1; 341 ci->ci_dev = self; 342 ci->ci_idlespin = cpu_idlespin; 343 344 pvr = mfpvr(); 345 vers = (pvr >> 16) & 0xffff; 346 347 switch (id) { 348 case 0: 349 /* load my cpu_number to PIR */ 350 switch (vers) { 351 case MPC601: 352 case MPC604: 353 case MPC604e: 354 case MPC604ev: 355 case MPC7400: 356 case MPC7410: 357 case MPC7447A: 358 case MPC7448: 359 case MPC7450: 360 case MPC7455: 361 case MPC7457: 362 mtspr(SPR_PIR, id); 363 } 364 cpu_setup(self, ci); 365 break; 366 default: 367 if (id >= CPU_MAXNUM) { 368 aprint_normal(": more than %d cpus?\n", CPU_MAXNUM); 369 panic("cpuattach"); 370 } 371 #ifndef MULTIPROCESSOR 372 aprint_normal(" not configured\n"); 373 return NULL; 374 #else 375 mi_cpu_attach(ci); 376 break; 377 #endif 378 } 379 return (ci); 380 } 381 382 void 383 cpu_setup(self, ci) 384 struct device *self; 385 struct cpu_info *ci; 386 { 387 u_int hid0, pvr, vers; 388 const char *bitmask; 389 char hidbuf[128]; 390 char model[80]; 391 392 pvr = mfpvr(); 393 vers = (pvr >> 16) & 0xffff; 394 395 cpu_identify(model, sizeof(model)); 396 aprint_normal(": %s, ID %d%s\n", model, cpu_number(), 397 cpu_number() == 0 ? " (primary)" : ""); 398 399 #if defined (PPC_OEA) || defined (PPC_OEA64) 400 hid0 = mfspr(SPR_HID0); 401 #elif defined (PPC_OEA64_BRIDGE) 402 hid0 = mfspr(SPR_HID0); 403 #endif 404 405 cpu_probe_cache(); 406 407 /* 408 * Configure power-saving mode. 409 */ 410 switch (vers) { 411 case MPC604: 412 case MPC604e: 413 case MPC604ev: 414 /* 415 * Do not have HID0 support settings, but can support 416 * MSR[POW] off 417 */ 418 powersave = 1; 419 break; 420 421 case MPC603: 422 case MPC603e: 423 case MPC603ev: 424 case MPC750: 425 case IBM750FX: 426 case MPC7400: 427 case MPC7410: 428 case MPC8240: 429 case MPC8245: 430 case MPCG2: 431 /* Select DOZE mode. */ 432 hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP); 433 hid0 |= HID0_DOZE | HID0_DPM; 434 powersave = 1; 435 break; 436 437 case MPC7447A: 438 case MPC7448: 439 case MPC7457: 440 case MPC7455: 441 case MPC7450: 442 /* Enable the 7450 branch caches */ 443 hid0 |= HID0_SGE | HID0_BTIC; 444 hid0 |= HID0_LRSTK | HID0_FOLD | HID0_BHT; 445 /* Disable BTIC on 7450 Rev 2.0 or earlier */ 446 if (vers == MPC7450 && (pvr & 0xFFFF) <= 0x0200) 447 hid0 &= ~HID0_BTIC; 448 /* Select NAP mode. */ 449 hid0 &= ~(HID0_HIGH_BAT_EN | HID0_SLEEP); 450 hid0 |= HID0_NAP | HID0_DPM /* | HID0_XBSEN */; 451 powersave = 1; 452 break; 453 454 case IBM970: 455 case IBM970FX: 456 default: 457 /* No power-saving mode is available. */ ; 458 } 459 460 #ifdef NAPMODE 461 switch (vers) { 462 case IBM750FX: 463 case MPC750: 464 case MPC7400: 465 /* Select NAP mode. */ 466 hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP); 467 hid0 |= HID0_NAP; 468 break; 469 } 470 #endif 471 472 switch (vers) { 473 case IBM750FX: 474 case MPC750: 475 hid0 &= ~HID0_DBP; /* XXX correct? */ 476 hid0 |= HID0_EMCP | HID0_BTIC | HID0_SGE | HID0_BHT; 477 break; 478 479 case MPC7400: 480 case MPC7410: 481 hid0 &= ~HID0_SPD; 482 hid0 |= HID0_EMCP | HID0_BTIC | HID0_SGE | HID0_BHT; 483 hid0 |= HID0_EIEC; 484 break; 485 } 486 487 #if defined (PPC_OEA) 488 mtspr(SPR_HID0, hid0); 489 __asm volatile("sync;isync"); 490 #endif 491 492 switch (vers) { 493 case MPC601: 494 bitmask = HID0_601_BITMASK; 495 break; 496 case MPC7450: 497 case MPC7455: 498 case MPC7457: 499 bitmask = HID0_7450_BITMASK; 500 break; 501 case IBM970: 502 case IBM970FX: 503 bitmask = 0; 504 break; 505 default: 506 bitmask = HID0_BITMASK; 507 break; 508 } 509 bitmask_snprintf(hid0, bitmask, hidbuf, sizeof hidbuf); 510 aprint_normal("%s: HID0 %s, powersave: %d\n", self->dv_xname, hidbuf, powersave); 511 512 ci->ci_khz = 0; 513 514 /* 515 * Display speed and cache configuration. 516 */ 517 switch (vers) { 518 case MPC604: 519 case MPC604e: 520 case MPC604ev: 521 case MPC750: 522 case IBM750FX: 523 case MPC7400: 524 case MPC7410: 525 case MPC7447A: 526 case MPC7448: 527 case MPC7450: 528 case MPC7455: 529 case MPC7457: 530 aprint_normal("%s: ", self->dv_xname); 531 cpu_probe_speed(ci); 532 aprint_normal("%u.%02u MHz", 533 ci->ci_khz / 1000, (ci->ci_khz / 10) % 100); 534 535 if (vers == IBM750FX || vers == MPC750 || 536 vers == MPC7400 || vers == MPC7410 || MPC745X_P(vers)) { 537 if (MPC745X_P(vers)) { 538 cpu_config_l3cr(vers); 539 } else { 540 cpu_config_l2cr(pvr); 541 } 542 } 543 aprint_normal("\n"); 544 break; 545 } 546 547 #if NSYSMON_ENVSYS > 0 548 /* 549 * Attach MPC750 temperature sensor to the envsys subsystem. 550 * XXX the 74xx series also has this sensor, but it is not 551 * XXX supported by Motorola and may return values that are off by 552 * XXX 35-55 degrees C. 553 */ 554 if (vers == MPC750 || vers == IBM750FX) 555 cpu_tau_setup(ci); 556 #endif 557 558 evcnt_attach_dynamic(&ci->ci_ev_clock, EVCNT_TYPE_INTR, 559 NULL, self->dv_xname, "clock"); 560 evcnt_attach_dynamic(&ci->ci_ev_softclock, EVCNT_TYPE_INTR, 561 NULL, self->dv_xname, "soft clock"); 562 evcnt_attach_dynamic(&ci->ci_ev_softnet, EVCNT_TYPE_INTR, 563 NULL, self->dv_xname, "soft net"); 564 evcnt_attach_dynamic(&ci->ci_ev_softserial, EVCNT_TYPE_INTR, 565 NULL, self->dv_xname, "soft serial"); 566 evcnt_attach_dynamic(&ci->ci_ev_traps, EVCNT_TYPE_TRAP, 567 NULL, self->dv_xname, "traps"); 568 evcnt_attach_dynamic(&ci->ci_ev_kdsi, EVCNT_TYPE_TRAP, 569 &ci->ci_ev_traps, self->dv_xname, "kernel DSI traps"); 570 evcnt_attach_dynamic(&ci->ci_ev_udsi, EVCNT_TYPE_TRAP, 571 &ci->ci_ev_traps, self->dv_xname, "user DSI traps"); 572 evcnt_attach_dynamic(&ci->ci_ev_udsi_fatal, EVCNT_TYPE_TRAP, 573 &ci->ci_ev_udsi, self->dv_xname, "user DSI failures"); 574 evcnt_attach_dynamic(&ci->ci_ev_kisi, EVCNT_TYPE_TRAP, 575 &ci->ci_ev_traps, self->dv_xname, "kernel ISI traps"); 576 evcnt_attach_dynamic(&ci->ci_ev_isi, EVCNT_TYPE_TRAP, 577 &ci->ci_ev_traps, self->dv_xname, "user ISI traps"); 578 evcnt_attach_dynamic(&ci->ci_ev_isi_fatal, EVCNT_TYPE_TRAP, 579 &ci->ci_ev_isi, self->dv_xname, "user ISI failures"); 580 evcnt_attach_dynamic(&ci->ci_ev_scalls, EVCNT_TYPE_TRAP, 581 &ci->ci_ev_traps, self->dv_xname, "system call traps"); 582 evcnt_attach_dynamic(&ci->ci_ev_pgm, EVCNT_TYPE_TRAP, 583 &ci->ci_ev_traps, self->dv_xname, "PGM traps"); 584 evcnt_attach_dynamic(&ci->ci_ev_fpu, EVCNT_TYPE_TRAP, 585 &ci->ci_ev_traps, self->dv_xname, "FPU unavailable traps"); 586 evcnt_attach_dynamic(&ci->ci_ev_fpusw, EVCNT_TYPE_TRAP, 587 &ci->ci_ev_fpu, self->dv_xname, "FPU context switches"); 588 evcnt_attach_dynamic(&ci->ci_ev_ali, EVCNT_TYPE_TRAP, 589 &ci->ci_ev_traps, self->dv_xname, "user alignment traps"); 590 evcnt_attach_dynamic(&ci->ci_ev_ali_fatal, EVCNT_TYPE_TRAP, 591 &ci->ci_ev_ali, self->dv_xname, "user alignment traps"); 592 evcnt_attach_dynamic(&ci->ci_ev_umchk, EVCNT_TYPE_TRAP, 593 &ci->ci_ev_umchk, self->dv_xname, "user MCHK failures"); 594 evcnt_attach_dynamic(&ci->ci_ev_vec, EVCNT_TYPE_TRAP, 595 &ci->ci_ev_traps, self->dv_xname, "AltiVec unavailable"); 596 #ifdef ALTIVEC 597 if (cpu_altivec) { 598 evcnt_attach_dynamic(&ci->ci_ev_vecsw, EVCNT_TYPE_TRAP, 599 &ci->ci_ev_vec, self->dv_xname, "AltiVec context switches"); 600 } 601 #endif 602 evcnt_attach_dynamic(&ci->ci_ev_ipi, EVCNT_TYPE_INTR, 603 NULL, self->dv_xname, "IPIs"); 604 } 605 606 void 607 cpu_identify(char *str, size_t len) 608 { 609 u_int pvr, major, minor; 610 uint16_t vers, rev, revfmt; 611 const struct cputab *cp; 612 const char *name; 613 size_t n; 614 615 pvr = mfpvr(); 616 vers = pvr >> 16; 617 rev = pvr; 618 619 switch (vers) { 620 case MPC7410: 621 minor = (pvr >> 0) & 0xff; 622 major = minor <= 4 ? 1 : 2; 623 break; 624 default: 625 major = (pvr >> 4) & 0xf; 626 minor = (pvr >> 0) & 0xf; 627 } 628 629 for (cp = models; cp->name[0] != '\0'; cp++) { 630 if (cp->version == vers) 631 break; 632 } 633 634 if (str == NULL) { 635 str = cpu_model; 636 len = sizeof(cpu_model); 637 cpu = vers; 638 } 639 640 revfmt = cp->revfmt; 641 name = cp->name; 642 if (rev == MPC750 && pvr == 15) { 643 name = "755"; 644 revfmt = REVFMT_HEX; 645 } 646 647 if (cp->name[0] != '\0') { 648 n = snprintf(str, len, "%s (Revision ", cp->name); 649 } else { 650 n = snprintf(str, len, "Version %#x (Revision ", vers); 651 } 652 if (len > n) { 653 switch (revfmt) { 654 case REVFMT_MAJMIN: 655 snprintf(str + n, len - n, "%u.%u)", major, minor); 656 break; 657 case REVFMT_HEX: 658 snprintf(str + n, len - n, "0x%04x)", rev); 659 break; 660 case REVFMT_DEC: 661 snprintf(str + n, len - n, "%u)", rev); 662 break; 663 } 664 } 665 } 666 667 #ifdef L2CR_CONFIG 668 u_int l2cr_config = L2CR_CONFIG; 669 #else 670 u_int l2cr_config = 0; 671 #endif 672 673 #ifdef L3CR_CONFIG 674 u_int l3cr_config = L3CR_CONFIG; 675 #else 676 u_int l3cr_config = 0; 677 #endif 678 679 void 680 cpu_enable_l2cr(register_t l2cr) 681 { 682 register_t msr, x; 683 684 /* Disable interrupts and set the cache config bits. */ 685 msr = mfmsr(); 686 mtmsr(msr & ~PSL_EE); 687 #ifdef ALTIVEC 688 if (cpu_altivec) 689 __asm volatile("dssall"); 690 #endif 691 __asm volatile("sync"); 692 mtspr(SPR_L2CR, l2cr & ~L2CR_L2E); 693 __asm volatile("sync"); 694 695 /* Wait for L2 clock to be stable (640 L2 clocks). */ 696 delay(100); 697 698 /* Invalidate all L2 contents. */ 699 mtspr(SPR_L2CR, l2cr | L2CR_L2I); 700 do { 701 x = mfspr(SPR_L2CR); 702 } while (x & L2CR_L2IP); 703 704 /* Enable L2 cache. */ 705 l2cr |= L2CR_L2E; 706 mtspr(SPR_L2CR, l2cr); 707 mtmsr(msr); 708 } 709 710 void 711 cpu_enable_l3cr(register_t l3cr) 712 { 713 register_t x; 714 715 /* By The Book (numbered steps from section 3.7.1.3 of MPC7450UM) */ 716 717 /* 718 * 1: Set all L3CR bits for final config except L3E, L3I, L3PE, and 719 * L3CLKEN. (also mask off reserved bits in case they were included 720 * in L3CR_CONFIG) 721 */ 722 l3cr &= ~(L3CR_L3E|L3CR_L3I|L3CR_L3PE|L3CR_L3CLKEN|L3CR_RESERVED); 723 mtspr(SPR_L3CR, l3cr); 724 725 /* 2: Set L3CR[5] (otherwise reserved bit) to 1 */ 726 l3cr |= 0x04000000; 727 mtspr(SPR_L3CR, l3cr); 728 729 /* 3: Set L3CLKEN to 1*/ 730 l3cr |= L3CR_L3CLKEN; 731 mtspr(SPR_L3CR, l3cr); 732 733 /* 4/5: Perform a global cache invalidate (ref section 3.7.3.6) */ 734 __asm volatile("dssall;sync"); 735 /* L3 cache is already disabled, no need to clear L3E */ 736 mtspr(SPR_L3CR, l3cr|L3CR_L3I); 737 do { 738 x = mfspr(SPR_L3CR); 739 } while (x & L3CR_L3I); 740 741 /* 6: Clear L3CLKEN to 0 */ 742 l3cr &= ~L3CR_L3CLKEN; 743 mtspr(SPR_L3CR, l3cr); 744 745 /* 7: Perform a 'sync' and wait at least 100 CPU cycles */ 746 __asm volatile("sync"); 747 delay(100); 748 749 /* 8: Set L3E and L3CLKEN */ 750 l3cr |= (L3CR_L3E|L3CR_L3CLKEN); 751 mtspr(SPR_L3CR, l3cr); 752 753 /* 9: Perform a 'sync' and wait at least 100 CPU cycles */ 754 __asm volatile("sync"); 755 delay(100); 756 } 757 758 void 759 cpu_config_l2cr(int pvr) 760 { 761 register_t l2cr; 762 763 l2cr = mfspr(SPR_L2CR); 764 765 /* 766 * For MP systems, the firmware may only configure the L2 cache 767 * on the first CPU. In this case, assume that the other CPUs 768 * should use the same value for L2CR. 769 */ 770 if ((l2cr & L2CR_L2E) != 0 && l2cr_config == 0) { 771 l2cr_config = l2cr; 772 } 773 774 /* 775 * Configure L2 cache if not enabled. 776 */ 777 if ((l2cr & L2CR_L2E) == 0 && l2cr_config != 0) { 778 cpu_enable_l2cr(l2cr_config); 779 l2cr = mfspr(SPR_L2CR); 780 } 781 782 if ((l2cr & L2CR_L2E) == 0) { 783 aprint_normal(" L2 cache present but not enabled "); 784 return; 785 } 786 787 aprint_normal(","); 788 if ((pvr >> 16) == IBM750FX || 789 (pvr & 0xffffff00) == 0x00082200 /* IBM750CX */ || 790 (pvr & 0xffffef00) == 0x00082300 /* IBM750CXe */) { 791 cpu_fmttab_print(cpu_ibm750_l2cr_formats, l2cr); 792 } else { 793 cpu_fmttab_print(cpu_l2cr_formats, l2cr); 794 } 795 } 796 797 void 798 cpu_config_l3cr(int vers) 799 { 800 register_t l2cr; 801 register_t l3cr; 802 803 l2cr = mfspr(SPR_L2CR); 804 805 /* 806 * For MP systems, the firmware may only configure the L2 cache 807 * on the first CPU. In this case, assume that the other CPUs 808 * should use the same value for L2CR. 809 */ 810 if ((l2cr & L2CR_L2E) != 0 && l2cr_config == 0) { 811 l2cr_config = l2cr; 812 } 813 814 /* 815 * Configure L2 cache if not enabled. 816 */ 817 if ((l2cr & L2CR_L2E) == 0 && l2cr_config != 0) { 818 cpu_enable_l2cr(l2cr_config); 819 l2cr = mfspr(SPR_L2CR); 820 } 821 822 aprint_normal(","); 823 switch (vers) { 824 case MPC7447A: 825 case MPC7457: 826 cpu_fmttab_print(cpu_7457_l2cr_formats, l2cr); 827 return; 828 case MPC7448: 829 cpu_fmttab_print(cpu_7448_l2cr_formats, l2cr); 830 return; 831 default: 832 cpu_fmttab_print(cpu_7450_l2cr_formats, l2cr); 833 break; 834 } 835 836 l3cr = mfspr(SPR_L3CR); 837 838 /* 839 * For MP systems, the firmware may only configure the L3 cache 840 * on the first CPU. In this case, assume that the other CPUs 841 * should use the same value for L3CR. 842 */ 843 if ((l3cr & L3CR_L3E) != 0 && l3cr_config == 0) { 844 l3cr_config = l3cr; 845 } 846 847 /* 848 * Configure L3 cache if not enabled. 849 */ 850 if ((l3cr & L3CR_L3E) == 0 && l3cr_config != 0) { 851 cpu_enable_l3cr(l3cr_config); 852 l3cr = mfspr(SPR_L3CR); 853 } 854 855 if (l3cr & L3CR_L3E) { 856 aprint_normal(","); 857 cpu_fmttab_print(cpu_7450_l3cr_formats, l3cr); 858 } 859 } 860 861 void 862 cpu_probe_speed(struct cpu_info *ci) 863 { 864 uint64_t cps; 865 866 mtspr(SPR_MMCR0, MMCR0_FC); 867 mtspr(SPR_PMC1, 0); 868 mtspr(SPR_MMCR0, MMCR0_PMC1SEL(PMCN_CYCLES)); 869 delay(100000); 870 cps = (mfspr(SPR_PMC1) * 10) + 4999; 871 872 mtspr(SPR_MMCR0, MMCR0_FC); 873 874 ci->ci_khz = cps / 1000; 875 } 876 877 #if NSYSMON_ENVSYS > 0 878 void 879 cpu_tau_setup(struct cpu_info *ci) 880 { 881 struct { 882 struct sysmon_envsys sme; 883 envsys_data_t edata; 884 } *datap; 885 int error; 886 887 datap = malloc(sizeof(*datap), M_DEVBUF, M_WAITOK | M_ZERO); 888 889 datap->edata.sensor = 0; 890 datap->edata.units = ENVSYS_STEMP; 891 datap->edata.state = ENVSYS_SVALID; 892 (void)strlcpy(datap->edata.desc, "CPU Temp", 893 sizeof(datap->edata.desc)); 894 895 ci->ci_sysmon_cookie = &datap->sme; 896 datap->sme.sme_nsensors = 1; 897 datap->sme.sme_sensor_data = &datap->edata; 898 datap->sme.sme_name = ci->ci_dev->dv_xname; 899 datap->sme.sme_cookie = ci; 900 datap->sme.sme_gtredata = cpu_tau_gtredata; 901 902 if ((error = sysmon_envsys_register(&datap->sme)) != 0) 903 aprint_error("%s: unable to register with sysmon (%d)\n", 904 ci->ci_dev->dv_xname, error); 905 } 906 907 908 /* Find the temperature of the CPU. */ 909 int 910 cpu_tau_gtredata(struct sysmon_envsys *sme, envsys_data_t *edata) 911 { 912 int i, threshold, count; 913 914 if (edata->sensor != 0) { 915 edata->state = ENVSYS_SINVALID; 916 return 0; 917 } 918 919 threshold = 64; /* Half of the 7-bit sensor range */ 920 mtspr(SPR_THRM1, 0); 921 mtspr(SPR_THRM2, 0); 922 /* XXX This counter is supposed to be "at least 20 microseonds, in 923 * XXX units of clock cycles". Since we don't have convenient 924 * XXX access to the CPU speed, set it to a conservative value, 925 * XXX that is, assuming a fast (1GHz) G3 CPU (As of February 2002, 926 * XXX the fastest G3 processor is 700MHz) . The cost is that 927 * XXX measuring the temperature takes a bit longer. 928 */ 929 mtspr(SPR_THRM3, SPR_THRM_TIMER(20000) | SPR_THRM_ENABLE); 930 931 /* Successive-approximation code adapted from Motorola 932 * application note AN1800/D, "Programming the Thermal Assist 933 * Unit in the MPC750 Microprocessor". 934 */ 935 for (i = 4; i >= 0 ; i--) { 936 mtspr(SPR_THRM1, 937 SPR_THRM_THRESHOLD(threshold) | SPR_THRM_VALID); 938 count = 0; 939 while ((count < 100) && 940 ((mfspr(SPR_THRM1) & SPR_THRM_TIV) == 0)) { 941 count++; 942 delay(1); 943 } 944 if (mfspr(SPR_THRM1) & SPR_THRM_TIN) { 945 /* The interrupt bit was set, meaning the 946 * temperature was above the threshold 947 */ 948 threshold += 2 << i; 949 } else { 950 /* Temperature was below the threshold */ 951 threshold -= 2 << i; 952 } 953 } 954 threshold += 2; 955 956 /* Convert the temperature in degrees C to microkelvin */ 957 sme->sme_sensor_data->value_cur = (threshold * 1000000) + 273150000; 958 959 return 0; 960 } 961 #endif /* NSYSMON_ENVSYS > 0 */ 962
Indexes created Thu Oct 02 10:09:58 GMT 2025