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1da177e4 LT |
1 | #include <linux/smp.h> |
2 | #include <linux/timex.h> | |
3 | #include <linux/string.h> | |
4 | #include <asm/semaphore.h> | |
5 | #include <linux/seq_file.h> | |
95235ca2 | 6 | #include <linux/cpufreq.h> |
1da177e4 LT |
7 | |
8 | /* | |
9 | * Get CPU information for use by the procfs. | |
10 | */ | |
11 | static int show_cpuinfo(struct seq_file *m, void *v) | |
12 | { | |
13 | /* | |
14 | * These flag bits must match the definitions in <asm/cpufeature.h>. | |
15 | * NULL means this bit is undefined or reserved; either way it doesn't | |
16 | * have meaning as far as Linux is concerned. Note that it's important | |
17 | * to realize there is a difference between this table and CPUID -- if | |
18 | * applications want to get the raw CPUID data, they should access | |
19 | * /dev/cpu/<cpu_nr>/cpuid instead. | |
20 | */ | |
7f35bf92 | 21 | static const char * const x86_cap_flags[] = { |
1da177e4 LT |
22 | /* Intel-defined */ |
23 | "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", | |
24 | "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov", | |
25 | "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx", | |
26 | "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe", | |
27 | ||
28 | /* AMD-defined */ | |
3c3b73b6 | 29 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
1da177e4 LT |
30 | NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL, |
31 | NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL, | |
3f98bc49 | 32 | NULL, "fxsr_opt", "rdtscp", NULL, NULL, "lm", "3dnowext", "3dnow", |
1da177e4 LT |
33 | |
34 | /* Transmeta-defined */ | |
35 | "recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL, | |
36 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
37 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
38 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
39 | ||
40 | /* Other (Linux-defined) */ | |
41 | "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr", | |
42 | NULL, NULL, NULL, NULL, | |
9a0b5817 | 43 | "constant_tsc", "up", NULL, NULL, NULL, NULL, NULL, NULL, |
1da177e4 LT |
44 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
45 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
46 | ||
47 | /* Intel-defined (#2) */ | |
9d95dd84 | 48 | "pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est", |
1da177e4 LT |
49 | "tm2", NULL, "cid", NULL, NULL, "cx16", "xtpr", NULL, |
50 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
51 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
52 | ||
53 | /* VIA/Cyrix/Centaur-defined */ | |
54 | NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en", | |
224f611c | 55 | "ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL, |
1da177e4 LT |
56 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
57 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
58 | ||
59 | /* AMD-defined (#2) */ | |
3f98bc49 | 60 | "lahf_lm", "cmp_legacy", "svm", NULL, "cr8legacy", NULL, NULL, NULL, |
1da177e4 LT |
61 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
62 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
63 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
64 | }; | |
7f35bf92 | 65 | static const char * const x86_power_flags[] = { |
3f98bc49 AK |
66 | "ts", /* temperature sensor */ |
67 | "fid", /* frequency id control */ | |
68 | "vid", /* voltage id control */ | |
69 | "ttp", /* thermal trip */ | |
70 | "tm", | |
71 | "stc", | |
72 | NULL, | |
73 | /* nothing */ /* constant_tsc - moved to flags */ | |
74 | }; | |
1da177e4 LT |
75 | struct cpuinfo_x86 *c = v; |
76 | int i, n = c - cpu_data; | |
77 | int fpu_exception; | |
78 | ||
79 | #ifdef CONFIG_SMP | |
80 | if (!cpu_online(n)) | |
81 | return 0; | |
82 | #endif | |
83 | seq_printf(m, "processor\t: %d\n" | |
84 | "vendor_id\t: %s\n" | |
85 | "cpu family\t: %d\n" | |
86 | "model\t\t: %d\n" | |
87 | "model name\t: %s\n", | |
88 | n, | |
89 | c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown", | |
90 | c->x86, | |
91 | c->x86_model, | |
92 | c->x86_model_id[0] ? c->x86_model_id : "unknown"); | |
93 | ||
94 | if (c->x86_mask || c->cpuid_level >= 0) | |
95 | seq_printf(m, "stepping\t: %d\n", c->x86_mask); | |
96 | else | |
97 | seq_printf(m, "stepping\t: unknown\n"); | |
98 | ||
99 | if ( cpu_has(c, X86_FEATURE_TSC) ) { | |
95235ca2 VP |
100 | unsigned int freq = cpufreq_quick_get(n); |
101 | if (!freq) | |
102 | freq = cpu_khz; | |
a3a255e7 | 103 | seq_printf(m, "cpu MHz\t\t: %u.%03u\n", |
95235ca2 | 104 | freq / 1000, (freq % 1000)); |
1da177e4 LT |
105 | } |
106 | ||
107 | /* Cache size */ | |
108 | if (c->x86_cache_size >= 0) | |
109 | seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size); | |
110 | #ifdef CONFIG_X86_HT | |
94605eff | 111 | if (c->x86_max_cores * smp_num_siblings > 1) { |
db468681 | 112 | seq_printf(m, "physical id\t: %d\n", phys_proc_id[n]); |
94605eff | 113 | seq_printf(m, "siblings\t: %d\n", cpus_weight(cpu_core_map[n])); |
d31ddaa1 | 114 | seq_printf(m, "core id\t\t: %d\n", cpu_core_id[n]); |
94605eff | 115 | seq_printf(m, "cpu cores\t: %d\n", c->booted_cores); |
db468681 | 116 | } |
1da177e4 LT |
117 | #endif |
118 | ||
119 | /* We use exception 16 if we have hardware math and we've either seen it or the CPU claims it is internal */ | |
120 | fpu_exception = c->hard_math && (ignore_fpu_irq || cpu_has_fpu); | |
121 | seq_printf(m, "fdiv_bug\t: %s\n" | |
122 | "hlt_bug\t\t: %s\n" | |
123 | "f00f_bug\t: %s\n" | |
124 | "coma_bug\t: %s\n" | |
125 | "fpu\t\t: %s\n" | |
126 | "fpu_exception\t: %s\n" | |
127 | "cpuid level\t: %d\n" | |
128 | "wp\t\t: %s\n" | |
129 | "flags\t\t:", | |
130 | c->fdiv_bug ? "yes" : "no", | |
131 | c->hlt_works_ok ? "no" : "yes", | |
132 | c->f00f_bug ? "yes" : "no", | |
133 | c->coma_bug ? "yes" : "no", | |
134 | c->hard_math ? "yes" : "no", | |
135 | fpu_exception ? "yes" : "no", | |
136 | c->cpuid_level, | |
137 | c->wp_works_ok ? "yes" : "no"); | |
138 | ||
139 | for ( i = 0 ; i < 32*NCAPINTS ; i++ ) | |
140 | if ( test_bit(i, c->x86_capability) && | |
141 | x86_cap_flags[i] != NULL ) | |
142 | seq_printf(m, " %s", x86_cap_flags[i]); | |
143 | ||
3f98bc49 AK |
144 | for (i = 0; i < 32; i++) |
145 | if (c->x86_power & (1 << i)) { | |
146 | if (i < ARRAY_SIZE(x86_power_flags) && | |
147 | x86_power_flags[i]) | |
148 | seq_printf(m, "%s%s", | |
149 | x86_power_flags[i][0]?" ":"", | |
150 | x86_power_flags[i]); | |
151 | else | |
152 | seq_printf(m, " [%d]", i); | |
153 | } | |
154 | ||
1da177e4 LT |
155 | seq_printf(m, "\nbogomips\t: %lu.%02lu\n\n", |
156 | c->loops_per_jiffy/(500000/HZ), | |
157 | (c->loops_per_jiffy/(5000/HZ)) % 100); | |
3dd9d514 | 158 | |
1da177e4 LT |
159 | return 0; |
160 | } | |
161 | ||
162 | static void *c_start(struct seq_file *m, loff_t *pos) | |
163 | { | |
164 | return *pos < NR_CPUS ? cpu_data + *pos : NULL; | |
165 | } | |
166 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
167 | { | |
168 | ++*pos; | |
169 | return c_start(m, pos); | |
170 | } | |
171 | static void c_stop(struct seq_file *m, void *v) | |
172 | { | |
173 | } | |
174 | struct seq_operations cpuinfo_op = { | |
175 | .start = c_start, | |
176 | .next = c_next, | |
177 | .stop = c_stop, | |
178 | .show = show_cpuinfo, | |
179 | }; |