Pull bugfix into test branch
[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", "rdtscp", NULL, 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, 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",
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", NULL, "cr8legacy", NULL, NULL, NULL,
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         };
65         static const char * const x86_power_flags[] = {
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         };
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) ) {
100                 unsigned int freq = cpufreq_quick_get(n);
101                 if (!freq)
102                         freq = cpu_khz;
103                 seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
104                         freq / 1000, (freq % 1000));
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
111         if (c->x86_max_cores * smp_num_siblings > 1) {
112                 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
113                 seq_printf(m, "siblings\t: %d\n", cpus_weight(cpu_core_map[n]));
114                 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
115                 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
116         }
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
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
155         seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
156                      c->loops_per_jiffy/(500000/HZ),
157                      (c->loops_per_jiffy/(5000/HZ)) % 100);
158         seq_printf(m, "clflush size\t: %u\n\n", c->x86_clflush_size);
159
160         return 0;
161 }
162
163 static void *c_start(struct seq_file *m, loff_t *pos)
164 {
165         return *pos < NR_CPUS ? cpu_data + *pos : NULL;
166 }
167 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
168 {
169         ++*pos;
170         return c_start(m, pos);
171 }
172 static void c_stop(struct seq_file *m, void *v)
173 {
174 }
175 struct seq_operations cpuinfo_op = {
176         .start  = c_start,
177         .next   = c_next,
178         .stop   = c_stop,
179         .show   = show_cpuinfo,
180 };