Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
[linux-2.6] / arch / i386 / kernel / cpu / proc.c
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>
6 #include <linux/cpufreq.h>
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          */
21         static const char * const x86_cap_flags[] = {
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 */
29                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
30                 NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
31                 NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
32                 NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm", "3dnowext", "3dnow",
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,
43                 "constant_tsc", "up", NULL, NULL, NULL, NULL, NULL, NULL,
44                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
45                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
46
47                 /* Intel-defined (#2) */
48                 "pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
49                 "tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
50                 NULL, NULL, "dca", NULL, NULL, NULL, NULL, "popcnt",
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",
55                 "ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
56                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
57                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
58
59                 /* AMD-defined (#2) */
60                 "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8legacy", "abm",
61                 "sse4a", "misalignsse",
62                 "3dnowprefetch", "osvw", "ibs", NULL, NULL, NULL, NULL, NULL,
63                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
64                 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
65         };
66         static const char * const x86_power_flags[] = {
67                 "ts",   /* temperature sensor */
68                 "fid",  /* frequency id control */
69                 "vid",  /* voltage id control */
70                 "ttp",  /* thermal trip */
71                 "tm",
72                 "stc",
73                 "100mhzsteps",
74                 "hwpstate",
75                 NULL,
76                 NULL,   /* constant_tsc - moved to flags */
77                 /* nothing */
78         };
79         struct cpuinfo_x86 *c = v;
80         int i, n = c - cpu_data;
81         int fpu_exception;
82
83 #ifdef CONFIG_SMP
84         if (!cpu_online(n))
85                 return 0;
86 #endif
87         seq_printf(m, "processor\t: %d\n"
88                 "vendor_id\t: %s\n"
89                 "cpu family\t: %d\n"
90                 "model\t\t: %d\n"
91                 "model name\t: %s\n",
92                 n,
93                 c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
94                 c->x86,
95                 c->x86_model,
96                 c->x86_model_id[0] ? c->x86_model_id : "unknown");
97
98         if (c->x86_mask || c->cpuid_level >= 0)
99                 seq_printf(m, "stepping\t: %d\n", c->x86_mask);
100         else
101                 seq_printf(m, "stepping\t: unknown\n");
102
103         if ( cpu_has(c, X86_FEATURE_TSC) ) {
104                 unsigned int freq = cpufreq_quick_get(n);
105                 if (!freq)
106                         freq = cpu_khz;
107                 seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
108                         freq / 1000, (freq % 1000));
109         }
110
111         /* Cache size */
112         if (c->x86_cache_size >= 0)
113                 seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
114 #ifdef CONFIG_X86_HT
115         if (c->x86_max_cores * smp_num_siblings > 1) {
116                 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
117                 seq_printf(m, "siblings\t: %d\n", cpus_weight(cpu_core_map[n]));
118                 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
119                 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
120         }
121 #endif
122         
123         /* We use exception 16 if we have hardware math and we've either seen it or the CPU claims it is internal */
124         fpu_exception = c->hard_math && (ignore_fpu_irq || cpu_has_fpu);
125         seq_printf(m, "fdiv_bug\t: %s\n"
126                         "hlt_bug\t\t: %s\n"
127                         "f00f_bug\t: %s\n"
128                         "coma_bug\t: %s\n"
129                         "fpu\t\t: %s\n"
130                         "fpu_exception\t: %s\n"
131                         "cpuid level\t: %d\n"
132                         "wp\t\t: %s\n"
133                         "flags\t\t:",
134                      c->fdiv_bug ? "yes" : "no",
135                      c->hlt_works_ok ? "no" : "yes",
136                      c->f00f_bug ? "yes" : "no",
137                      c->coma_bug ? "yes" : "no",
138                      c->hard_math ? "yes" : "no",
139                      fpu_exception ? "yes" : "no",
140                      c->cpuid_level,
141                      c->wp_works_ok ? "yes" : "no");
142
143         for ( i = 0 ; i < 32*NCAPINTS ; i++ )
144                 if ( test_bit(i, c->x86_capability) &&
145                      x86_cap_flags[i] != NULL )
146                         seq_printf(m, " %s", x86_cap_flags[i]);
147
148         for (i = 0; i < 32; i++)
149                 if (c->x86_power & (1 << i)) {
150                         if (i < ARRAY_SIZE(x86_power_flags) &&
151                             x86_power_flags[i])
152                                 seq_printf(m, "%s%s",
153                                            x86_power_flags[i][0]?" ":"",
154                                            x86_power_flags[i]);
155                         else
156                                 seq_printf(m, " [%d]", i);
157                 }
158
159         seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
160                      c->loops_per_jiffy/(500000/HZ),
161                      (c->loops_per_jiffy/(5000/HZ)) % 100);
162         seq_printf(m, "clflush size\t: %u\n\n", c->x86_clflush_size);
163
164         return 0;
165 }
166
167 static void *c_start(struct seq_file *m, loff_t *pos)
168 {
169         return *pos < NR_CPUS ? cpu_data + *pos : NULL;
170 }
171 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
172 {
173         ++*pos;
174         return c_start(m, pos);
175 }
176 static void c_stop(struct seq_file *m, void *v)
177 {
178 }
179 struct seq_operations cpuinfo_op = {
180         .start  = c_start,
181         .next   = c_next,
182         .stop   = c_stop,
183         .show   = show_cpuinfo,
184 };