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38 #include <rte_common.h>
40 #include "eal_private.h"
43 rte_cpu_get_model(uint32_t fam_mod_step)
45 uint32_t family, model, ext_model;
47 family = (fam_mod_step >> 8) & 0xf;
48 model = (fam_mod_step >> 4) & 0xf;
50 if (family == 6 || family == 15) {
51 ext_model = (fam_mod_step >> 16) & 0xf;
52 model += (ext_model << 4);
59 rdmsr(int msr, uint64_t *val)
61 #ifdef RTE_EXEC_ENV_LINUXAPP
65 fd = open("/dev/cpu/0/msr", O_RDONLY);
69 ret = pread(fd, val, sizeof(uint64_t), msr);
83 check_model_wsm_nhm(uint8_t model)
102 check_model_gdm_dnv(uint8_t model)
116 get_tsc_freq_arch(void)
119 uint32_t a, b, c, d, maxleaf;
124 * Time Stamp Counter and Nominal Core Crystal Clock
127 maxleaf = __get_cpuid_max(0, NULL);
129 if (maxleaf >= 0x15) {
130 __cpuid(0x15, a, b, c, d);
132 /* EBX : TSC/Crystal ratio, ECX : Crystal Hz */
137 __cpuid(0x1, a, b, c, d);
138 model = rte_cpu_get_model(a);
140 if (check_model_wsm_nhm(model))
142 else if ((c & bit_AVX) || check_model_gdm_dnv(model))
147 ret = rdmsr(0xCE, &tsc_hz);
151 return ((tsc_hz >> 8) & 0xff) * mult * 1E6;