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1.21 ! deraadt 1: /* $OpenBSD: pctr.c,v 1.20 2008/07/08 21:39:52 sobrado Exp $ */
1.13 deraadt 2:
3: /*
4: * Copyright (c) 2007 Mike Belopuhov, Aleksey Lomovtsev
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.1 dm 18:
19: /*
20: * Pentium performance counter control program for OpenBSD.
21: * Copyright 1996 David Mazieres <dm@lcs.mit.edu>.
22: *
23: * Modification and redistribution in source and binary forms is
24: * permitted provided that due credit is given to the author and the
1.5 pvalchev 25: * OpenBSD project by leaving this copyright notice intact.
1.1 dm 26: */
27:
28: #include <sys/types.h>
29: #include <sys/stat.h>
1.4 downsj 30: #include <sys/sysctl.h>
1.1 dm 31: #include <sys/ioctl.h>
1.13 deraadt 32:
1.1 dm 33: #include <machine/cpu.h>
34: #include <machine/pctr.h>
1.4 downsj 35: #include <machine/specialreg.h>
1.1 dm 36:
1.13 deraadt 37: #include <errno.h>
38: #include <err.h>
39: #include <fcntl.h>
40: #include <stdio.h>
41: #include <stdlib.h>
42: #include <string.h>
43: #include <unistd.h>
44:
45: #include "pctrvar.h"
46:
47: static int cpu_type;
48: static int tsc_avail;
49:
50: static int ctr, func, masku, thold;
51: static int cflag, eflag, iflag, kflag, uflag;
52: static int Mflag, Eflag, Sflag, Iflag, Aflag;
53:
1.18 mikeb 54: static void pctr_cpu_creds(void);
1.13 deraadt 55: static char *pctr_fn2str(u_int32_t);
56: static void pctr_printvals(struct pctrst *);
1.19 deraadt 57: static int pctr_read(struct pctrst *);
58: static int pctr_write(int, u_int32_t);
1.13 deraadt 59: static void pctr_list_fnct(void);
60: static int pctr_set_cntr(void);
61: static void usage(void);
62:
63: int
64: main(int argc, char **argv)
65: {
66: const char *errstr;
67: struct pctrst st;
68: int ch = -1;
69: int list_mode = 0, set_mode = 0;
70:
1.18 mikeb 71: pctr_cpu_creds();
1.13 deraadt 72:
1.18 mikeb 73: while ((ch = getopt(argc, argv, "AcEef:IiklMm:Ss:t:u")) != -1)
1.13 deraadt 74: switch (ch) {
1.17 mikeb 75: case 'A':
76: Aflag++;
77: break;
78: case 'c':
79: cflag++;
1.13 deraadt 80: break;
1.17 mikeb 81: case 'E':
1.18 mikeb 82: Eflag++;
83: break;
1.17 mikeb 84: case 'e':
85: eflag++;
1.13 deraadt 86: break;
87: case 'f':
88: if (sscanf(optarg, "%x", &func) <= 0 || func < 0 ||
89: func > PCTR_MAX_FUNCT)
90: errx(1, "invalid function number");
91: break;
1.18 mikeb 92: case 'I':
93: Iflag++;
94: break;
1.17 mikeb 95: case 'i':
96: iflag++;
97: break;
98: case 'k':
99: kflag++;
100: break;
101: case 'l':
102: list_mode++;
103: break;
1.18 mikeb 104: case 'M':
105: Mflag++;
106: break;
1.13 deraadt 107: case 'm':
108: if (sscanf(optarg, "%x", &masku) <= 0 || masku < 0 ||
109: masku > PCTR_MAX_UMASK)
110: errx(1, "invalid unit mask number");
111: break;
1.18 mikeb 112: case 'S':
113: Sflag++;
114: break;
1.17 mikeb 115: case 's':
116: set_mode++;
117: ctr = strtonum(optarg, 0, PCTR_NUM-1, &errstr);
118: if (errstr)
119: errx(1, "counter number is %s: %s", errstr,
120: optarg);
121: break;
1.13 deraadt 122: case 't':
123: thold = strtonum(optarg, 0, 0xff, &errstr);
124: if (errstr)
125: errx(1, "threshold is %s: %s", errstr, optarg);
126: break;
127: case 'u':
128: uflag++;
129: break;
130: default:
131: usage();
132: /* NOTREACHED */
133: }
134: argc -= optind;
135: argv += optind;
136:
1.18 mikeb 137: if (argc)
138: usage();
139:
140: if (Aflag && (Mflag || Eflag || Sflag || Iflag))
141: usage();
142:
1.13 deraadt 143: if (list_mode)
144: pctr_list_fnct();
145: else if (set_mode) {
146: if (pctr_set_cntr() < 0)
147: err(1, "pctr_set_cntr");
148: } else {
149: bzero(&st, sizeof(st));
150: if (pctr_read(&st) < 0)
151: err(1, "pctr_read");
152: pctr_printvals(&st);
153: }
154: return (0);
155: }
156:
1.18 mikeb 157: static void
1.13 deraadt 158: pctr_cpu_creds(void)
159: {
160: int atype;
161: char arch[16], vendor[64];
162: int mib[2], cpu_id, cpu_feature;
163: size_t len;
164:
165: /* Get the architecture */
166: mib[0] = CTL_HW;
167: mib[1] = HW_MACHINE;
168: len = sizeof(arch) - 1;
169: bzero(arch, sizeof(arch));
170: if (sysctl(mib, 2, arch, &len, NULL, 0) == -1)
171: err(1, "HW_MACHINE");
172: arch[len] = '\0';
173:
174: if (strcmp(arch, "i386") == 0)
175: atype = ARCH_I386;
176: else if (strcmp(arch, "amd64") == 0)
177: atype = ARCH_AMD64;
178: else
1.18 mikeb 179: errx(1, "architecture %s is not supported", arch);
1.13 deraadt 180:
181: /* Get the CPU id */
182: mib[0] = CTL_MACHDEP;
183: mib[1] = CPU_CPUID;
184: len = sizeof(cpu_id);
185: if (sysctl(mib, 2, &cpu_id, &len, NULL, 0) == -1)
186: err(1, "CPU_CPUID");
187:
188: /* Get the CPU features */
189: mib[1] = CPU_CPUFEATURE;
190: len = sizeof(cpu_feature);
191: if (sysctl(mib, 2, &cpu_feature, &len, NULL, 0) == -1)
192: err(1, "CPU_CPUFEATURE");
193:
194: /* Get the processor vendor */
195: mib[0] = CTL_MACHDEP;
196: mib[1] = CPU_CPUVENDOR;
197: len = sizeof(vendor) - 1;
198: bzero(vendor, sizeof(vendor));
199: if (sysctl(mib, 2, vendor, &len, NULL, 0) == -1)
200: err(1, "CPU_CPUVENDOR");
201: vendor[len] = '\0';
202:
203: switch (atype) {
204: case ARCH_I386:
205: if (strcmp(vendor, "AuthenticAMD") == 0) {
206: if (((cpu_id >> 8) & 15) >= 6)
207: cpu_type = CPU_AMD;
208: else
209: cpu_type = CPU_UNDEF; /* old AMD cpu */
210:
211: } else if (strcmp(vendor, "GenuineIntel") == 0) {
212: if (((cpu_id >> 8) & 15) == 6 &&
213: ((cpu_id >> 4) & 15) > 14)
214: cpu_type = CPU_CORE;
215: else if (((cpu_id >> 8) & 15) >= 6)
216: cpu_type = CPU_P6;
217: else if (((cpu_id >> 4) & 15) > 0)
218: cpu_type = CPU_P5;
219: else
220: cpu_type = CPU_UNDEF; /* old Intel cpu */
221: }
222: if (cpu_feature & CPUID_TSC)
223: tsc_avail = 1;
224: break;
225: case ARCH_AMD64:
226: if (strcmp(vendor, "AuthenticAMD") == 0)
227: cpu_type = CPU_AMD;
228: else if (strcmp(vendor, "GenuineIntel") == 0)
229: cpu_type = CPU_CORE;
230: if (cpu_feature & CPUID_TSC)
231: tsc_avail = 1;
232: break;
233: }
234: }
235:
236: static __inline int
237: pctr_ctrfn_index(struct ctrfn *cfnp, u_int32_t func)
238: {
239: int i;
240:
241: for (i = 0; cfnp[i].name != NULL; i++)
242: if (cfnp[i].fn == func)
243: return (i);
244: return (-1);
245: }
246:
247: static char *
248: pctr_fn2str(u_int32_t sel)
249: {
250: static char buf[128];
251: struct ctrfn *cfnp = NULL;
252: char th[6], um[5], *msg;
253: u_int32_t fn;
254: int ind;
255:
256: bzero(buf, sizeof(buf));
257: bzero(th, sizeof(th));
258: bzero(um, sizeof(um));
259: switch (cpu_type) {
260: case CPU_P5:
261: fn = sel & 0x3f;
262: if ((ind = pctr_ctrfn_index(p5fn, fn)) < 0)
263: msg = "unknown function";
264: else
265: msg = p5fn[ind].name;
266: snprintf(buf, sizeof(buf), "%c%c%c %02x %s",
1.15 deraadt 267: sel & P5CTR_C ? 'c' : '-',
268: sel & P5CTR_U ? 'u' : '-',
269: sel & P5CTR_K ? 'k' : '-',
1.13 deraadt 270: fn, msg);
271: break;
272: case CPU_P6:
273: cfnp = p6fn;
274: case CPU_CORE:
1.14 deraadt 275: if (cpu_type == CPU_CORE)
276: cfnp = corefn;
1.13 deraadt 277: fn = sel & 0xff;
278: if ((ind = pctr_ctrfn_index(cfnp, fn)) < 0)
279: msg = "unknown function";
280: else
281: msg = cfnp[ind].name;
282: if (cfnp[ind].name && cfnp[ind].flags & CFL_MESI)
283: snprintf(um, sizeof (um), "%c%c%c%c",
1.15 deraadt 284: sel & PCTR_UM_M ? 'M' : '-',
285: sel & PCTR_UM_E ? 'E' : '-',
286: sel & PCTR_UM_S ? 'S' : '-',
287: sel & PCTR_UM_I ? 'I' : '-');
1.13 deraadt 288: else if (cfnp[ind].name && cfnp[ind].flags & CFL_SA)
289: snprintf(um, sizeof(um), "%c",
1.15 deraadt 290: sel & PCTR_UM_A ? 'A' : '-');
291: if (sel >> PCTR_CM_SHIFT)
1.13 deraadt 292: snprintf(th, sizeof(th), "+%d",
1.15 deraadt 293: sel >> PCTR_CM_SHIFT);
1.13 deraadt 294: snprintf(buf, sizeof(buf), "%c%c%c%c %02x %02x %s %s %s",
1.15 deraadt 295: sel & PCTR_I ? 'i' : '-',
296: sel & PCTR_E ? 'e' : '-',
297: sel & PCTR_K ? 'k' : '-',
298: sel & PCTR_U ? 'u' : '-',
299: fn, (sel >> PCTR_UM_SHIFT) & 0xff, th, um, msg);
1.13 deraadt 300: break;
301: case CPU_AMD:
302: fn = sel & 0xff;
1.15 deraadt 303: if (sel >> PCTR_CM_SHIFT)
1.13 deraadt 304: snprintf(th, sizeof(th), "+%d",
1.15 deraadt 305: sel >> PCTR_CM_SHIFT);
1.13 deraadt 306: snprintf(buf, sizeof(buf), "%c%c%c%c %02x %02x %s",
1.15 deraadt 307: sel & PCTR_I ? 'i' : '-',
308: sel & PCTR_E ? 'e' : '-',
309: sel & PCTR_K ? 'k' : '-',
310: sel & PCTR_U ? 'u' : '-',
311: fn, (sel >> PCTR_UM_SHIFT) & 0xff, th);
1.13 deraadt 312: break;
313: }
314: return (buf);
315: }
1.3 downsj 316:
1.1 dm 317: static void
1.13 deraadt 318: pctr_printvals(struct pctrst *st)
319: {
320: int i, n;
321:
322: switch (cpu_type) {
323: case CPU_P5:
324: case CPU_P6:
325: case CPU_CORE:
326: n = PCTR_INTEL_NUM;
327: case CPU_AMD:
328: if (cpu_type == CPU_AMD)
329: n = PCTR_AMD_NUM;
330: for (i = 0; i < n; i++)
331: printf(" ctr%d = %16llu [%s]\n", i, st->pctr_hwc[i],
332: pctr_fn2str(st->pctr_fn[i]));
333: if (tsc_avail)
334: printf(" tsc = %16llu\n", st->pctr_tsc);
335: break;
336: }
337: }
338:
339: static int
340: pctr_read(struct pctrst *st)
341: {
342: int fd, se;
343:
344: fd = open(_PATH_PCTR, O_RDONLY);
345: if (fd < 0)
346: return (-1);
347: if (ioctl(fd, PCIOCRD, st) < 0) {
348: se = errno;
349: close(fd);
350: errno = se;
351: return (-1);
352: }
353: return (close(fd));
354: }
355:
356: static int
357: pctr_write(int ctr, u_int32_t val)
358: {
359: int fd, se;
360:
361: fd = open(_PATH_PCTR, O_WRONLY);
362: if (fd < 0)
363: return (-1);
364: if (ioctl(fd, PCIOCS0 + ctr, &val) < 0) {
365: se = errno;
366: close(fd);
367: errno = se;
368: return (-1);
369: }
370: return (close(fd));
371: }
372:
373: static __inline void
374: pctr_printdesc(char *desc)
1.1 dm 375: {
1.7 mickey 376: char *p;
1.1 dm 377:
1.7 mickey 378: for (;;) {
379: while (*desc == ' ')
380: desc++;
381: if (strlen(desc) < 70) {
382: if (*desc)
383: printf(" %s\n", desc);
384: return;
385: }
386: p = desc + 72;
387: while (*--p != ' ')
388: ;
389: while (*--p == ' ')
390: ;
391: p++;
1.13 deraadt 392: printf(" %.*s\n", (int)(p-desc), desc);
1.7 mickey 393: desc = p;
394: }
1.1 dm 395: }
396:
397: static void
1.13 deraadt 398: pctr_list_fnct(void)
1.1 dm 399: {
1.13 deraadt 400: struct ctrfn *cfnp = NULL;
1.1 dm 401:
1.13 deraadt 402: if (cpu_type == CPU_P5)
1.7 mickey 403: cfnp = p5fn;
1.13 deraadt 404: else if (cpu_type == CPU_P6)
1.7 mickey 405: cfnp = p6fn;
1.13 deraadt 406: else if (cpu_type == CPU_CORE)
407: cfnp = corefn;
408: else if (cpu_type == CPU_AMD)
409: cfnp = amdfn;
410: else
411: return;
412:
1.7 mickey 413: for (; cfnp->name; cfnp++) {
414: printf("%02x %s", cfnp->fn, cfnp->name);
415: if (cfnp->flags & CFL_MESI)
1.13 deraadt 416: printf(" (MESI)");
1.7 mickey 417: else if (cfnp->flags & CFL_SA)
1.13 deraadt 418: printf(" (A)");
1.7 mickey 419: if (cfnp->flags & CFL_C0)
420: printf(" (ctr0 only)");
1.13 deraadt 421: else if (cfnp->flags & CFL_C1)
1.7 mickey 422: printf(" (ctr1 only)");
1.18 mikeb 423: if (cfnp->flags & CFL_UM)
424: printf(" (needs unit mask)");
1.7 mickey 425: printf("\n");
426: if (cfnp->desc)
1.13 deraadt 427: pctr_printdesc(cfnp->desc);
1.7 mickey 428: }
1.1 dm 429: }
430:
1.13 deraadt 431: static int
432: pctr_set_cntr(void)
1.1 dm 433: {
1.13 deraadt 434: struct ctrfn *cfnp = NULL;
435: u_int32_t val = func;
436: int ind = 0;
437:
438: switch (cpu_type) {
439: case CPU_P5:
440: if (ctr >= PCTR_INTEL_NUM)
1.18 mikeb 441: errx(1, "only %d counters are supported",
442: PCTR_INTEL_NUM);
1.13 deraadt 443: if (cflag)
1.15 deraadt 444: val |= P5CTR_C;
1.13 deraadt 445: if (kflag)
1.15 deraadt 446: val |= P5CTR_K;
1.13 deraadt 447: if (uflag)
1.15 deraadt 448: val |= P5CTR_U;
1.13 deraadt 449: if (func && (!kflag && !uflag))
1.15 deraadt 450: val |= P5CTR_K | P5CTR_U;
1.13 deraadt 451: break;
452: case CPU_P6:
1.7 mickey 453: cfnp = p6fn;
1.13 deraadt 454: case CPU_CORE:
1.14 deraadt 455: if (cpu_type == CPU_CORE)
456: cfnp = corefn;
1.13 deraadt 457: if (ctr >= PCTR_INTEL_NUM)
1.18 mikeb 458: errx(1, "only %d counters are supported",
459: PCTR_INTEL_NUM);
1.13 deraadt 460: if (func && (ind = pctr_ctrfn_index(cfnp, func)) < 0)
1.18 mikeb 461: errx(1, "function %02x is not supported", func);
462: if (func && (cfnp[ind].flags & CFL_SA))
1.15 deraadt 463: val |= PCTR_UM_A;
1.18 mikeb 464: if (func && (cfnp[ind].flags & CFL_MESI)) {
465: if (Mflag)
466: val |= PCTR_UM_M;
467: if (Eflag)
468: val |= PCTR_UM_E;
469: if (Sflag)
470: val |= PCTR_UM_S;
471: if (Iflag)
472: val |= PCTR_UM_I;
473: if (!Mflag || !Eflag || !Sflag || !Iflag)
474: val |= PCTR_UM_MESI;
475: }
1.13 deraadt 476: if (func && (cfnp[ind].flags & CFL_ED))
1.15 deraadt 477: val |= PCTR_E;
1.18 mikeb 478: if (func && (cfnp[ind].flags & CFL_UM) && !masku)
479: errx(1, "function %02x needs unit mask specification",
480: func);
1.13 deraadt 481: case CPU_AMD:
482: if (cpu_type == CPU_AMD && func &&
483: ((ind = pctr_ctrfn_index(amdfn, func)) < 0))
1.18 mikeb 484: errx(1, "function %02x is not supported", func);
1.13 deraadt 485: if (ctr >= PCTR_AMD_NUM)
1.18 mikeb 486: errx(1, "only %d counters are supported",
487: PCTR_AMD_NUM);
1.13 deraadt 488: if (eflag)
1.15 deraadt 489: val |= PCTR_E;
1.13 deraadt 490: if (iflag)
1.15 deraadt 491: val |= PCTR_I;
1.13 deraadt 492: if (kflag)
1.15 deraadt 493: val |= PCTR_K;
1.13 deraadt 494: if (uflag)
1.15 deraadt 495: val |= PCTR_U;
1.13 deraadt 496: if (func && (!kflag && !uflag))
1.15 deraadt 497: val |= PCTR_K | PCTR_U;
498: val |= masku << PCTR_UM_SHIFT;
499: val |= thold << PCTR_CM_SHIFT;
1.13 deraadt 500: if (func)
1.15 deraadt 501: val |= PCTR_EN;
1.13 deraadt 502: break;
1.7 mickey 503: }
504:
1.13 deraadt 505: return (pctr_write(ctr, val));
1.1 dm 506: }
507:
508: static void
1.13 deraadt 509: usage(void)
1.1 dm 510: {
1.13 deraadt 511: extern char *__progname;
512: char *usg = NULL;
1.1 dm 513:
1.13 deraadt 514: switch (cpu_type) {
515: case CPU_P5:
1.17 mikeb 516: usg = "[-cklu] [-f funct] [-s ctr]";
1.13 deraadt 517: break;
518: case CPU_P6:
519: case CPU_CORE:
1.17 mikeb 520: usg = "[-AEeIiklMSu] [-f funct] [-m umask] [-s ctr] "
1.13 deraadt 521: "[-t thold]";
522: break;
523: case CPU_AMD:
1.17 mikeb 524: usg = "[-eilku] [-f funct] [-m umask] [-s ctr] "
1.13 deraadt 525: "[-t thold]";
526: break;
1.7 mickey 527: }
1.1 dm 528:
1.20 sobrado 529: fprintf(stderr, "usage: %s %s\n", __progname, usg);
1.18 mikeb 530: exit(1);
1.1 dm 531: }