^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/timex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/cpufreq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "cpu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifdef CONFIG_X86_VMX_FEATURE_NAMES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) extern const char * const x86_vmx_flags[NVMXINTS*32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Get CPU information for use by the procfs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) unsigned int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #ifdef CONFIG_SMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) seq_printf(m, "siblings\t: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) cpumask_weight(topology_core_cpumask(cpu)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) seq_printf(m, "apicid\t\t: %d\n", c->apicid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #ifdef CONFIG_X86_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) seq_printf(m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) "fdiv_bug\t: %s\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) "f00f_bug\t: %s\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) "coma_bug\t: %s\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) "fpu\t\t: %s\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) "fpu_exception\t: %s\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) "cpuid level\t: %d\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) "wp\t\t: yes\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) boot_cpu_has_bug(X86_BUG_FDIV) ? "yes" : "no",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) boot_cpu_has_bug(X86_BUG_F00F) ? "yes" : "no",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) boot_cpu_has_bug(X86_BUG_COMA) ? "yes" : "no",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) boot_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) boot_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) c->cpuid_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) seq_printf(m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) "fpu\t\t: yes\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) "fpu_exception\t: yes\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) "cpuid level\t: %d\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) "wp\t\t: yes\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) c->cpuid_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static int show_cpuinfo(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct cpuinfo_x86 *c = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) unsigned int cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) cpu = c->cpu_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) seq_printf(m, "processor\t: %u\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) "vendor_id\t: %s\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) "cpu family\t: %d\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) "model\t\t: %u\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) "model name\t: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) cpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) c->x86,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) c->x86_model,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) c->x86_model_id[0] ? c->x86_model_id : "unknown");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (c->x86_stepping || c->cpuid_level >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) seq_printf(m, "stepping\t: %d\n", c->x86_stepping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) seq_puts(m, "stepping\t: unknown\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (c->microcode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) seq_printf(m, "microcode\t: 0x%x\n", c->microcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (cpu_has(c, X86_FEATURE_TSC)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned int freq = aperfmperf_get_khz(cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) freq = cpufreq_quick_get(cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (!freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) freq = cpu_khz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) freq / 1000, (freq % 1000));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /* Cache size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (c->x86_cache_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) seq_printf(m, "cache size\t: %u KB\n", c->x86_cache_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) show_cpuinfo_core(m, c, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) show_cpuinfo_misc(m, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) seq_puts(m, "flags\t\t:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) for (i = 0; i < 32*NCAPINTS; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) seq_printf(m, " %s", x86_cap_flags[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #ifdef CONFIG_X86_VMX_FEATURE_NAMES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (cpu_has(c, X86_FEATURE_VMX) && c->vmx_capability[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) seq_puts(m, "\nvmx flags\t:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) for (i = 0; i < 32*NVMXINTS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (test_bit(i, (unsigned long *)c->vmx_capability) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) x86_vmx_flags[i] != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) seq_printf(m, " %s", x86_vmx_flags[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) seq_puts(m, "\nbugs\t\t:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) for (i = 0; i < 32*NBUGINTS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) unsigned int bug_bit = 32*NCAPINTS + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (cpu_has_bug(c, bug_bit) && x86_bug_flags[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) seq_printf(m, " %s", x86_bug_flags[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) c->loops_per_jiffy/(500000/HZ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) (c->loops_per_jiffy/(5000/HZ)) % 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #ifdef CONFIG_X86_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (c->x86_tlbsize > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) c->x86_phys_bits, c->x86_virt_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) seq_puts(m, "power management:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) for (i = 0; i < 32; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (c->x86_power & (1 << i)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (i < ARRAY_SIZE(x86_power_flags) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) x86_power_flags[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) seq_printf(m, "%s%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) x86_power_flags[i][0] ? " " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) x86_power_flags[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) seq_printf(m, " [%d]", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) seq_puts(m, "\n\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static void *c_start(struct seq_file *m, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) *pos = cpumask_next(*pos - 1, cpu_online_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if ((*pos) < nr_cpu_ids)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return &cpu_data(*pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static void *c_next(struct seq_file *m, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) (*pos)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return c_start(m, pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static void c_stop(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) const struct seq_operations cpuinfo_op = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .start = c_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .next = c_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .stop = c_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .show = show_cpuinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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