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38 #include "eal_private.h"
41 rte_cpu_get_model(uint32_t fam_mod_step)
43 uint32_t family, model, ext_model;
45 family = (fam_mod_step >> 8) & 0xf;
46 model = (fam_mod_step >> 4) & 0xf;
48 if (family == 6 || family == 15) {
49 ext_model = (fam_mod_step >> 16) & 0xf;
50 model += (ext_model << 4);
57 rdmsr(int msr, uint64_t *val)
59 #ifdef RTE_EXEC_ENV_LINUXAPP
63 fd = open("/dev/cpu/0/msr", O_RDONLY);
67 ret = pread(fd, val, sizeof(uint64_t), msr);
81 check_model_wsm_nhm(uint8_t model)
100 check_model_gdm_dnv(uint8_t model)
114 get_tsc_freq_arch(void)
117 uint32_t a, b, c, d, maxleaf;
122 * Time Stamp Counter and Nominal Core Crystal Clock
125 maxleaf = __get_cpuid_max(0, NULL);
127 if (maxleaf >= 0x15) {
128 __cpuid(0x15, a, b, c, d);
130 /* EBX : TSC/Crystal ratio, ECX : Crystal Hz */
135 __cpuid(0x1, a, b, c, d);
136 model = rte_cpu_get_model(a);
138 if (check_model_wsm_nhm(model))
140 else if ((c & bit_AVX) || check_model_gdm_dnv(model))
145 ret = rdmsr(0xCE, &tsc_hz);
149 return ((tsc_hz >> 8) & 0xff) * mult * 1E6;