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identcpu.c: Add MOVBE feature string.
[dragonfly.git] / sys / platform / pc64 / amd64 / identcpu.c
blobb5678dc189cc50dba70b1fd1f5e37e0106a74ab2
1 /*-
2 * Copyright (c) 1992 Terrence R. Lambert.
3 * Copyright (c) 1982, 1987, 1990 The Regents of the University of California.
4 * Copyright (c) 1997 KATO Takenori.
5 * Copyright (c) 2008 The DragonFly Project.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * William Jolitz.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
40 * $DragonFly: src/sys/platform/pc64/amd64/identcpu.c,v 1.2 2008/11/24 13:14:21 swildner Exp $
41 */
42
43 #include "opt_cpu.h"
44
45 #include <sys/param.h>
46 #include <sys/bus.h>
47 #if JG
48 #include <sys/cpu.h>
49 #endif
50 #include <sys/eventhandler.h>
51 #include <sys/systm.h>
52 #include <sys/kernel.h>
53 #include <sys/sysctl.h>
54 #include <sys/power.h>
55
56 #include <machine/asmacros.h>
57 #include <machine/clock.h>
58 #include <machine/cputypes.h>
59 #include <machine/frame.h>
60 #include <machine/intr_machdep.h>
61 #include <machine/segments.h>
62 #include <machine/specialreg.h>
63 #include <machine/md_var.h>
64
65 #if JG
66 #include <amd64/isa/icu.h>
67 #endif
68
69 /* XXX - should be in header file: */
70 void printcpuinfo(void);
71 void identify_cpu(void);
72 void earlysetcpuclass(void);
73 void panicifcpuunsupported(void);
74
75 static void print_AMD_info(void);
76 static void print_AMD_assoc(int i);
77
78 int cpu_class;
79 char machine[] = "amd64";
80 SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD,
81 machine, 0, "Machine class");
82
83 static char cpu_model[128];
84 SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD,
85 cpu_model, 0, "Machine model");
86
87 static int hw_clockrate;
88 SYSCTL_INT(_hw, OID_AUTO, clockrate, CTLFLAG_RD,
89 &hw_clockrate, 0, "CPU instruction clock rate");
90
91 static char cpu_brand[48];
92
93 static struct {
94 char *cpu_name;
95 int cpu_class;
96 } amd64_cpus[] = {
97 { "Clawhammer", CPUCLASS_K8 }, /* CPU_CLAWHAMMER */
98 { "Sledgehammer", CPUCLASS_K8 }, /* CPU_SLEDGEHAMMER */
99 };
100
101 int cpu_cores;
102 int cpu_logical;
103
104
105 extern int pq_l2size;
106 extern int pq_l2nways;
107
108 void
109 printcpuinfo(void)
110 {
111 u_int regs[4], i;
112 char *brand;
113
114 cpu_class = amd64_cpus[cpu].cpu_class;
115 kprintf("CPU: ");
116 strncpy(cpu_model, amd64_cpus[cpu].cpu_name, sizeof (cpu_model));
117
118 /* Check for extended CPUID information and a processor name. */
119 if (cpu_exthigh >= 0x80000004) {
120 brand = cpu_brand;
121 for (i = 0x80000002; i < 0x80000005; i++) {
122 do_cpuid(i, regs);
123 memcpy(brand, regs, sizeof(regs));
124 brand += sizeof(regs);
125 }
126 }
127
128 if (strcmp(cpu_vendor, "GenuineIntel") == 0) {
129 /* Please make up your mind folks! */
130 strcat(cpu_model, "EM64T");
131 } else if (strcmp(cpu_vendor, "AuthenticAMD") == 0) {
132 /*
133 * Values taken from AMD Processor Recognition
134 * http://www.amd.com/K6/k6docs/pdf/20734g.pdf
135 * (also describes ``Features'' encodings.
136 */
137 strcpy(cpu_model, "AMD ");
138 switch (cpu_id & 0xF00) {
139 case 0xf00:
140 strcat(cpu_model, "AMD64 Processor");
141 break;
142 default:
143 strcat(cpu_model, "Unknown");
144 break;
145 }
146 }
147
148 /*
149 * Replace cpu_model with cpu_brand minus leading spaces if
150 * we have one.
151 */
152 brand = cpu_brand;
153 while (*brand == ' ')
154 ++brand;
155 if (*brand != '\0')
156 strcpy(cpu_model, brand);
157
158 kprintf("%s (", cpu_model);
159 switch(cpu_class) {
160 case CPUCLASS_K8:
161 #if JG
162 hw_clockrate = (tsc_freq + 5000) / 1000000;
163 kprintf("%jd.%02d-MHz ",
164 (intmax_t)(tsc_freq + 4999) / 1000000,
165 (u_int)((tsc_freq + 4999) / 10000) % 100);
166 #endif
167 kprintf("K8");
168 break;
169 default:
170 kprintf("Unknown"); /* will panic below... */
171 }
172 kprintf("-class CPU)\n");
173 if(*cpu_vendor)
174 kprintf(" Origin = \"%s\"",cpu_vendor);
175 if(cpu_id)
176 kprintf(" Id = 0x%x", cpu_id);
177
178 if (strcmp(cpu_vendor, "GenuineIntel") == 0 ||
179 strcmp(cpu_vendor, "AuthenticAMD") == 0) {
180 kprintf(" Stepping = %u", cpu_id & 0xf);
181 if (cpu_high > 0) {
182 u_int cmp = 1, htt = 1;
183
184 /*
185 * Here we should probably set up flags indicating
186 * whether or not various features are available.
187 * The interesting ones are probably VME, PSE, PAE,
188 * and PGE. The code already assumes without bothering
189 * to check that all CPUs >= Pentium have a TSC and
190 * MSRs.
191 */
192 kprintf("\n Features=0x%b", cpu_feature,
193 "\020"
194 "\001FPU" /* Integral FPU */
195 "\002VME" /* Extended VM86 mode support */
196 "\003DE" /* Debugging Extensions (CR4.DE) */
197 "\004PSE" /* 4MByte page tables */
198 "\005TSC" /* Timestamp counter */
199 "\006MSR" /* Machine specific registers */
200 "\007PAE" /* Physical address extension */
201 "\010MCE" /* Machine Check support */
202 "\011CX8" /* CMPEXCH8 instruction */
203 "\012APIC" /* SMP local APIC */
204 "\013oldMTRR" /* Previous implementation of MTRR */
205 "\014SEP" /* Fast System Call */
206 "\015MTRR" /* Memory Type Range Registers */
207 "\016PGE" /* PG_G (global bit) support */
208 "\017MCA" /* Machine Check Architecture */
209 "\020CMOV" /* CMOV instruction */
210 "\021PAT" /* Page attributes table */
211 "\022PSE36" /* 36 bit address space support */
212 "\023PN" /* Processor Serial number */
213 "\024CLFLUSH" /* Has the CLFLUSH instruction */
214 "\025<b20>"
215 "\026DTS" /* Debug Trace Store */
216 "\027ACPI" /* ACPI support */
217 "\030MMX" /* MMX instructions */
218 "\031FXSR" /* FXSAVE/FXRSTOR */
219 "\032SSE" /* Streaming SIMD Extensions */
220 "\033SSE2" /* Streaming SIMD Extensions #2 */
221 "\034SS" /* Self snoop */
222 "\035HTT" /* Hyperthreading (see EBX bit 16-23) */
223 "\036TM" /* Thermal Monitor clock slowdown */
224 "\037IA64" /* CPU can execute IA64 instructions */
225 "\040PBE" /* Pending Break Enable */
226 );
227
228 if (cpu_feature2 != 0) {
229 kprintf("\n Features2=0x%b", cpu_feature2,
230 "\020"
231 "\001SSE3" /* SSE3 */
232 "\002<b1>"
233 "\003DTES64" /* 64-bit Debug Trace */
234 "\004MON" /* MONITOR/MWAIT Instructions */
235 "\005DS_CPL" /* CPL Qualified Debug Store */
236 "\006VMX" /* Virtual Machine Extensions */
237 "\007SMX" /* Safer Mode Extensions */
238 "\010EST" /* Enhanced SpeedStep */
239 "\011TM2" /* Thermal Monitor 2 */
240 "\012SSSE3" /* SSSE3 */
241 "\013CNXT-ID" /* L1 context ID available */
242 "\014<b11>"
243 "\015<b12>"
244 "\016CX16" /* CMPXCHG16B Instruction */
245 "\017xTPR" /* Send Task Priority Messages*/
246 "\020PDCM" /* Perf/Debug Capability MSR */
247 "\021<b16>"
248 "\022<b17>"
249 "\023DCA" /* Direct Cache Access */
250 "\024SSE4.1"
251 "\025SSE4.2"
252 "\026x2APIC" /* xAPIC Extensions */
253 "\027MOVBE" /* MOVBE instruction */
254 "\030POPCNT"
255 "\031<b24>"
256 "\032<b25>"
257 "\033XSAVE"
258 "\034OSXSAVE"
259 "\035<b28>"
260 "\036<b29>"
261 "\037<b30>"
262 "\040<b31>"
263 );
264 }
265
266 /*
267 * AMD64 Architecture Programmer's Manual Volume 3:
268 * General-Purpose and System Instructions
269 * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24594.pdf
270 *
271 * IA-32 Intel Architecture Software Developer's Manual,
272 * Volume 2A: Instruction Set Reference, A-M
273 * ftp://download.intel.com/design/Pentium4/manuals/25366617.pdf
274 */
275 if (amd_feature != 0) {
276 kprintf("\n AMD Features=0x%b", amd_feature,
277 "\020" /* in hex */
278 "\001<s0>" /* Same */
279 "\002<s1>" /* Same */
280 "\003<s2>" /* Same */
281 "\004<s3>" /* Same */
282 "\005<s4>" /* Same */
283 "\006<s5>" /* Same */
284 "\007<s6>" /* Same */
285 "\010<s7>" /* Same */
286 "\011<s8>" /* Same */
287 "\012<s9>" /* Same */
288 "\013<b10>" /* Undefined */
289 "\014SYSCALL" /* Have SYSCALL/SYSRET */
290 "\015<s12>" /* Same */
291 "\016<s13>" /* Same */
292 "\017<s14>" /* Same */
293 "\020<s15>" /* Same */
294 "\021<s16>" /* Same */
295 "\022<s17>" /* Same */
296 "\023<b18>" /* Reserved, unknown */
297 "\024MP" /* Multiprocessor Capable */
298 "\025NX" /* Has EFER.NXE, NX */
299 "\026<b21>" /* Undefined */
300 "\027MMX+" /* AMD MMX Extensions */
301 "\030<s23>" /* Same */
302 "\031<s24>" /* Same */
303 "\032FFXSR" /* Fast FXSAVE/FXRSTOR */
304 "\033Page1GB" /* 1-GB large page support */
305 "\034RDTSCP" /* RDTSCP */
306 "\035<b28>" /* Undefined */
307 "\036LM" /* 64 bit long mode */
308 "\0373DNow!+" /* AMD 3DNow! Extensions */
309 "\0403DNow!" /* AMD 3DNow! */
310 );
311 }
312
313 if (amd_feature2 != 0) {
314 kprintf("\n AMD Features2=0x%b", amd_feature2,
315 "\020"
316 "\001LAHF" /* LAHF/SAHF in long mode */
317 "\002CMP" /* CMP legacy */
318 "\003SVM" /* Secure Virtual Mode */
319 "\004ExtAPIC" /* Extended APIC register */
320 "\005CR8" /* CR8 in legacy mode */
321 "\006<b5>"
322 "\007<b6>"
323 "\010<b7>"
324 "\011Prefetch" /* 3DNow! Prefetch/PrefetchW */
325 "\012<b9>"
326 "\013<b10>"
327 "\014<b11>"
328 "\015<b12>"
329 "\016<b13>"
330 "\017<b14>"
331 "\020<b15>"
332 "\021<b16>"
333 "\022<b17>"
334 "\023<b18>"
335 "\024<b19>"
336 "\025<b20>"
337 "\026<b21>"
338 "\027<b22>"
339 "\030<b23>"
340 "\031<b24>"
341 "\032<b25>"
342 "\033<b26>"
343 "\034<b27>"
344 "\035<b28>"
345 "\036<b29>"
346 "\037<b30>"
347 "\040<b31>"
348 );
349 }
350
351 if (cpu_feature & CPUID_HTT && strcmp(cpu_vendor,
352 "AuthenticAMD") == 0)
353 cpu_feature &= ~CPUID_HTT;
354
355 /*
356 * If this CPU supports HTT or CMP then mention the
357 * number of physical/logical cores it contains.
358 */
359 if (cpu_feature & CPUID_HTT)
360 htt = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
361 if (strcmp(cpu_vendor, "AuthenticAMD") == 0 &&
362 (amd_feature2 & AMDID2_CMP))
363 cmp = (cpu_procinfo2 & AMDID_CMP_CORES) + 1;
364 else if (strcmp(cpu_vendor, "GenuineIntel") == 0 &&
365 (cpu_high >= 4)) {
366 cpuid_count(4, 0, regs);
367 if ((regs[0] & 0x1f) != 0)
368 cmp = ((regs[0] >> 26) & 0x3f) + 1;
369 }
370 cpu_cores = cmp;
371 cpu_logical = htt / cmp;
372 if (cmp > 1)
373 kprintf("\n Cores per package: %d", cmp);
374 if ((htt / cmp) > 1)
375 kprintf("\n Logical CPUs per core: %d",
376 cpu_logical);
377 }
378 }
379 /* Avoid ugly blank lines: only print newline when we have to. */
380 if (*cpu_vendor || cpu_id)
381 kprintf("\n");
382
383 if (!bootverbose)
384 return;
385
386 if (strcmp(cpu_vendor, "AuthenticAMD") == 0)
387 print_AMD_info();
388 }
389
390 void
391 panicifcpuunsupported(void)
392 {
393
394 #ifndef HAMMER_CPU
395 #error "You need to specify a cpu type"
396 #endif
397 /*
398 * Now that we have told the user what they have,
399 * let them know if that machine type isn't configured.
400 */
401 switch (cpu_class) {
402 case CPUCLASS_X86:
403 #ifndef HAMMER_CPU
404 case CPUCLASS_K8:
405 #endif
406 panic("CPU class not configured");
407 default:
408 break;
409 }
410 }
411
412
413 #if JG
414 /* Update TSC freq with the value indicated by the caller. */
415 static void
416 tsc_freq_changed(void *arg, const struct cf_level *level, int status)
417 {
418 /* If there was an error during the transition, don't do anything. */
419 if (status != 0)
420 return;
421
422 /* Total setting for this level gives the new frequency in MHz. */
423 hw_clockrate = level->total_set.freq;
424 }
425
426 EVENTHANDLER_DEFINE(cpufreq_post_change, tsc_freq_changed, NULL,
427 EVENTHANDLER_PRI_ANY);
428 #endif
429
430 /*
431 * Final stage of CPU identification. -- Should I check TI?
432 */
433 void
434 identify_cpu(void)
435 {
436 u_int regs[4];
437
438 do_cpuid(0, regs);
439 cpu_high = regs[0];
440 ((u_int *)&cpu_vendor)[0] = regs[1];
441 ((u_int *)&cpu_vendor)[1] = regs[3];
442 ((u_int *)&cpu_vendor)[2] = regs[2];
443 cpu_vendor[12] = '\0';
444
445 do_cpuid(1, regs);
446 cpu_id = regs[0];
447 cpu_procinfo = regs[1];
448 cpu_feature = regs[3];
449 cpu_feature2 = regs[2];
450
451 if (strcmp(cpu_vendor, "GenuineIntel") == 0 ||
452 strcmp(cpu_vendor, "AuthenticAMD") == 0) {
453 do_cpuid(0x80000000, regs);
454 cpu_exthigh = regs[0];
455 }
456 if (cpu_exthigh >= 0x80000001) {
457 do_cpuid(0x80000001, regs);
458 amd_feature = regs[3] & ~(cpu_feature & 0x0183f3ff);
459 amd_feature2 = regs[2];
460 }
461 if (cpu_exthigh >= 0x80000008) {
462 do_cpuid(0x80000008, regs);
463 cpu_procinfo2 = regs[2];
464 }
465
466 /* XXX */
467 cpu = CPU_CLAWHAMMER;
468 }
469
470 static void
471 print_AMD_assoc(int i)
472 {
473 if (i == 255)
474 kprintf(", fully associative\n");
475 else
476 kprintf(", %d-way associative\n", i);
477 }
478
479 static void
480 print_AMD_l2_assoc(int i)
481 {
482 switch (i & 0x0f) {
483 case 0: kprintf(", disabled/not present\n"); break;
484 case 1: kprintf(", direct mapped\n"); break;
485 case 2: kprintf(", 2-way associative\n"); break;
486 case 4: kprintf(", 4-way associative\n"); break;
487 case 6: kprintf(", 8-way associative\n"); break;
488 case 8: kprintf(", 16-way associative\n"); break;
489 case 15: kprintf(", fully associative\n"); break;
490 default: kprintf(", reserved configuration\n"); break;
491 }
492 }
493
494 static void
495 print_AMD_info(void)
496 {
497 u_int regs[4];
498
499 if (cpu_exthigh < 0x80000005)
500 return;
501
502 do_cpuid(0x80000005, regs);
503 kprintf("L1 2MB data TLB: %d entries", (regs[0] >> 16) & 0xff);
504 print_AMD_assoc(regs[0] >> 24);
505
506 kprintf("L1 2MB instruction TLB: %d entries", regs[0] & 0xff);
507 print_AMD_assoc((regs[0] >> 8) & 0xff);
508
509 kprintf("L1 4KB data TLB: %d entries", (regs[1] >> 16) & 0xff);
510 print_AMD_assoc(regs[1] >> 24);
511
512 kprintf("L1 4KB instruction TLB: %d entries", regs[1] & 0xff);
513 print_AMD_assoc((regs[1] >> 8) & 0xff);
514
515 kprintf("L1 data cache: %d kbytes", regs[2] >> 24);
516 kprintf(", %d bytes/line", regs[2] & 0xff);
517 kprintf(", %d lines/tag", (regs[2] >> 8) & 0xff);
518 print_AMD_assoc((regs[2] >> 16) & 0xff);
519
520 kprintf("L1 instruction cache: %d kbytes", regs[3] >> 24);
521 kprintf(", %d bytes/line", regs[3] & 0xff);
522 kprintf(", %d lines/tag", (regs[3] >> 8) & 0xff);
523 print_AMD_assoc((regs[3] >> 16) & 0xff);
524
525 if (cpu_exthigh >= 0x80000006) {
526 do_cpuid(0x80000006, regs);
527 if ((regs[0] >> 16) != 0) {
528 kprintf("L2 2MB data TLB: %d entries",
529 (regs[0] >> 16) & 0xfff);
530 print_AMD_l2_assoc(regs[0] >> 28);
531 kprintf("L2 2MB instruction TLB: %d entries",
532 regs[0] & 0xfff);
533 print_AMD_l2_assoc((regs[0] >> 28) & 0xf);
534 } else {
535 kprintf("L2 2MB unified TLB: %d entries",
536 regs[0] & 0xfff);
537 print_AMD_l2_assoc((regs[0] >> 28) & 0xf);
538 }
539 if ((regs[1] >> 16) != 0) {
540 kprintf("L2 4KB data TLB: %d entries",
541 (regs[1] >> 16) & 0xfff);
542 print_AMD_l2_assoc(regs[1] >> 28);
543
544 kprintf("L2 4KB instruction TLB: %d entries",
545 (regs[1] >> 16) & 0xfff);
546 print_AMD_l2_assoc((regs[1] >> 28) & 0xf);
547 } else {
548 kprintf("L2 4KB unified TLB: %d entries",
549 (regs[1] >> 16) & 0xfff);
550 print_AMD_l2_assoc((regs[1] >> 28) & 0xf);
551 }
552 kprintf("L2 unified cache: %d kbytes", regs[2] >> 16);
553 kprintf(", %d bytes/line", regs[2] & 0xff);
554 kprintf(", %d lines/tag", (regs[2] >> 8) & 0x0f);
555 print_AMD_l2_assoc((regs[2] >> 12) & 0x0f);
556 }
557 }
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