x86: introduce initial apicid
[linux-2.6.git] / arch / x86 / 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 #ifdef CONFIG_X86_32
12 static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
13                               unsigned int cpu)
14 {
15 #ifdef CONFIG_X86_HT
16         if (c->x86_max_cores * smp_num_siblings > 1) {
17                 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
18                 seq_printf(m, "siblings\t: %d\n",
19                            cpus_weight(per_cpu(cpu_core_map, cpu)));
20                 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
21                 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
22                 seq_printf(m, "apicid\t\t: %d\n", c->apicid);
23                 seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
24         }
25 #endif
26 }
27
28 static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
29 {
30         /*
31          * We use exception 16 if we have hardware math and we've either seen
32          * it or the CPU claims it is internal
33          */
34         int fpu_exception = c->hard_math && (ignore_fpu_irq || cpu_has_fpu);
35         seq_printf(m,
36                    "fdiv_bug\t: %s\n"
37                    "hlt_bug\t\t: %s\n"
38                    "f00f_bug\t: %s\n"
39                    "coma_bug\t: %s\n"
40                    "fpu\t\t: %s\n"
41                    "fpu_exception\t: %s\n"
42                    "cpuid level\t: %d\n"
43                    "wp\t\t: %s\n",
44                    c->fdiv_bug ? "yes" : "no",
45                    c->hlt_works_ok ? "no" : "yes",
46                    c->f00f_bug ? "yes" : "no",
47                    c->coma_bug ? "yes" : "no",
48                    c->hard_math ? "yes" : "no",
49                    fpu_exception ? "yes" : "no",
50                    c->cpuid_level,
51                    c->wp_works_ok ? "yes" : "no");
52 }
53 #else
54 static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
55                               unsigned int cpu)
56 {
57 #ifdef CONFIG_SMP
58         if (c->x86_max_cores * smp_num_siblings > 1) {
59                 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
60                 seq_printf(m, "siblings\t: %d\n",
61                            cpus_weight(per_cpu(cpu_core_map, cpu)));
62                 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
63                 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
64                 seq_printf(m, "apicid\t\t: %d\n", c->apicid);
65                 seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
66         }
67 #endif
68 }
69
70 static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
71 {
72         seq_printf(m,
73                    "fpu\t\t: yes\n"
74                    "fpu_exception\t: yes\n"
75                    "cpuid level\t: %d\n"
76                    "wp\t\t: yes\n",
77                    c->cpuid_level);
78 }
79 #endif
80
81 static int show_cpuinfo(struct seq_file *m, void *v)
82 {
83         struct cpuinfo_x86 *c = v;
84         unsigned int cpu = 0;
85         int i;
86
87 #ifdef CONFIG_SMP
88         cpu = c->cpu_index;
89 #endif
90         seq_printf(m, "processor\t: %u\n"
91                    "vendor_id\t: %s\n"
92                    "cpu family\t: %d\n"
93                    "model\t\t: %u\n"
94                    "model name\t: %s\n",
95                    cpu,
96                    c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
97                    c->x86,
98                    c->x86_model,
99                    c->x86_model_id[0] ? c->x86_model_id : "unknown");
100
101         if (c->x86_mask || c->cpuid_level >= 0)
102                 seq_printf(m, "stepping\t: %d\n", c->x86_mask);
103         else
104                 seq_printf(m, "stepping\t: unknown\n");
105
106         if (cpu_has(c, X86_FEATURE_TSC)) {
107                 unsigned int freq = cpufreq_quick_get(cpu);
108
109                 if (!freq)
110                         freq = cpu_khz;
111                 seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
112                            freq / 1000, (freq % 1000));
113         }
114
115         /* Cache size */
116         if (c->x86_cache_size >= 0)
117                 seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
118
119         show_cpuinfo_core(m, c, cpu);
120         show_cpuinfo_misc(m, c);
121
122         seq_printf(m, "flags\t\t:");
123         for (i = 0; i < 32*NCAPINTS; i++)
124                 if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
125                         seq_printf(m, " %s", x86_cap_flags[i]);
126
127         seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
128                    c->loops_per_jiffy/(500000/HZ),
129                    (c->loops_per_jiffy/(5000/HZ)) % 100);
130
131 #ifdef CONFIG_X86_64
132         if (c->x86_tlbsize > 0)
133                 seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
134 #endif
135         seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
136 #ifdef CONFIG_X86_64
137         seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
138         seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
139                    c->x86_phys_bits, c->x86_virt_bits);
140 #endif
141
142         seq_printf(m, "power management:");
143         for (i = 0; i < 32; i++) {
144                 if (c->x86_power & (1 << i)) {
145                         if (i < ARRAY_SIZE(x86_power_flags) &&
146                             x86_power_flags[i])
147                                 seq_printf(m, "%s%s",
148                                            x86_power_flags[i][0]?" ":"",
149                                            x86_power_flags[i]);
150                         else
151                                 seq_printf(m, " [%d]", i);
152                 }
153         }
154
155         seq_printf(m, "\n\n");
156
157         return 0;
158 }
159
160 static void *c_start(struct seq_file *m, loff_t *pos)
161 {
162         if (*pos == 0)  /* just in case, cpu 0 is not the first */
163                 *pos = first_cpu(cpu_online_map);
164         if ((*pos) < NR_CPUS && cpu_online(*pos))
165                 return &cpu_data(*pos);
166         return NULL;
167 }
168
169 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
170 {
171         *pos = next_cpu(*pos, cpu_online_map);
172         return c_start(m, pos);
173 }
174
175 static void c_stop(struct seq_file *m, void *v)
176 {
177 }
178
179 const struct seq_operations cpuinfo_op = {
180         .start  = c_start,
181         .next   = c_next,
182         .stop   = c_stop,
183         .show   = show_cpuinfo,
184 };