1/*- 2 * Copyright (c) 2005,2008 Joseph Koshy 3 * Copyright (c) 2007 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by A. Joseph Koshy under 7 * sponsorship from the FreeBSD Foundation and Google, Inc. 8 *
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24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h>
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32__FBSDID("$FreeBSD: head/sys/dev/hwpmc/hwpmc_x86.c 184205 2008-10-23 15:53:51Z des $");
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32__FBSDID("$FreeBSD: head/sys/dev/hwpmc/hwpmc_x86.c 184802 2008-11-09 17:37:54Z jkoshy $"); |
33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/pmc.h> 37#include <sys/proc.h> 38#include <sys/systm.h> 39 40#include <machine/cpu.h>
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235 break; 236 pc = *(uintptr_t *) r; 237 fp = *(uintptr_t *) fp; 238 } 239 240 return (n); 241} 242
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243static struct pmc_mdep *
244pmc_intel_initialize(void)
245{
246 struct pmc_mdep *pmc_mdep;
247 enum pmc_cputype cputype;
248 int error, model;
249
250 KASSERT(strcmp(cpu_vendor, "GenuineIntel") == 0,
251 ("[intel,%d] Initializing non-intel processor", __LINE__));
252
253 PMCDBG(MDP,INI,0, "intel-initialize cpuid=0x%x", cpu_id);
254
255 cputype = -1;
256
257 switch (cpu_id & 0xF00) {
258#if defined(__i386__)
259 case 0x500: /* Pentium family processors */
260 cputype = PMC_CPU_INTEL_P5;
261 break;
262 case 0x600: /* Pentium Pro, Celeron, Pentium II & III */
263 switch ((cpu_id & 0xF0) >> 4) { /* model number field */
264 case 0x1:
265 cputype = PMC_CPU_INTEL_P6;
266 break;
267 case 0x3: case 0x5:
268 cputype = PMC_CPU_INTEL_PII;
269 break;
270 case 0x6:
271 cputype = PMC_CPU_INTEL_CL;
272 break;
273 case 0x7: case 0x8: case 0xA: case 0xB:
274 cputype = PMC_CPU_INTEL_PIII;
275 break;
276 case 0x9: case 0xD:
277 cputype = PMC_CPU_INTEL_PM;
278 break;
279 }
280 break;
281#endif
282#if defined(__i386__) || defined(__amd64__)
283 case 0xF00: /* P4 */
284 model = ((cpu_id & 0xF0000) >> 12) | ((cpu_id & 0xF0) >> 4);
285 if (model >= 0 && model <= 6) /* known models */
286 cputype = PMC_CPU_INTEL_PIV;
287 break;
288 }
289#endif
290
291 if ((int) cputype == -1) {
292 printf("pmc: Unknown Intel CPU.\n");
293 return NULL;
294 }
295
296 pmc_mdep = malloc(sizeof(struct pmc_mdep),
297 M_PMC, M_WAITOK|M_ZERO);
298
299 pmc_mdep->pmd_cputype = cputype;
300 pmc_mdep->pmd_nclass = 2;
301 pmc_mdep->pmd_classes[0].pm_class = PMC_CLASS_TSC;
302 pmc_mdep->pmd_classes[0].pm_caps = PMC_CAP_READ;
303 pmc_mdep->pmd_classes[0].pm_width = 64;
304 pmc_mdep->pmd_nclasspmcs[0] = 1;
305
306 error = 0;
307
308 switch (cputype) {
309
310#if defined(__i386__) || defined(__amd64__)
311
312 /*
313 * Intel Pentium 4 Processors, and P4/EMT64 processors.
314 */
315
316 case PMC_CPU_INTEL_PIV:
317 error = pmc_initialize_p4(pmc_mdep);
318 break;
319#endif
320
321#if defined(__i386__)
322 /*
323 * P6 Family Processors
324 */
325
326 case PMC_CPU_INTEL_P6:
327 case PMC_CPU_INTEL_CL:
328 case PMC_CPU_INTEL_PII:
329 case PMC_CPU_INTEL_PIII:
330 case PMC_CPU_INTEL_PM:
331
332 error = pmc_initialize_p6(pmc_mdep);
333 break;
334
335 /*
336 * Intel Pentium PMCs.
337 */
338
339 case PMC_CPU_INTEL_P5:
340 error = pmc_initialize_p5(pmc_mdep);
341 break;
342#endif
343
344 default:
345 KASSERT(0,("[intel,%d] Unknown CPU type", __LINE__));
346 }
347
348 if (error) {
349 free(pmc_mdep, M_PMC);
350 pmc_mdep = NULL;
351 }
352
353 return pmc_mdep;
354}
355
356
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243/* 244 * Machine dependent initialization for x86 class platforms. 245 */ 246 247struct pmc_mdep * 248pmc_md_initialize() 249{ 250 int i; 251 struct pmc_mdep *md; 252 253 /* determine the CPU kind */ 254 md = NULL; 255 if (strcmp(cpu_vendor, "AuthenticAMD") == 0) 256 md = pmc_amd_initialize(); 257 else if (strcmp(cpu_vendor, "GenuineIntel") == 0) 258 md = pmc_intel_initialize();
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259 else 260 KASSERT(0, ("[x86,%d] Unknown vendor", __LINE__)); |
261 262 /* disallow sampling if we do not have an LAPIC */ 263 if (md != NULL && lapic == NULL) 264 for (i = 1; i < md->pmd_nclass; i++)
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377 md->pmd_classes[i].pm_caps &= ~PMC_CAP_INTERRUPT;
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265 md->pmd_classdep[i].pcd_caps &= ~PMC_CAP_INTERRUPT; |
266
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379 return md;
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267 return (md); |
268}
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269 270void 271pmc_md_finalize(struct pmc_mdep *md) 272{ 273 if (strcmp(cpu_vendor, "AuthenticAMD") == 0) 274 pmc_amd_finalize(md); 275 else if (strcmp(cpu_vendor, "GenuineIntel") == 0) 276 pmc_intel_finalize(md); 277 else 278 KASSERT(0, ("[x86,%d] Unknown vendor", __LINE__)); 279} |
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