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proc.c
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1 #include <linux/seq_file.h>
2 #include <linux/kernel.h>
3 #include <linux/module.h>
4 #include <asm/machvec.h>
5 #include <asm/processor.h>
6 
7 static const char *cpu_name[] = {
8  [CPU_SH7201] = "SH7201",
9  [CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263",
10  [CPU_SH7264] = "SH7264", [CPU_SH7269] = "SH7269",
11  [CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
12  [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
13  [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
14  [CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710",
15  [CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720",
16  [CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729",
17  [CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S",
18  [CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751",
19  [CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760",
20  [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
21  [CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770",
22  [CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781",
23  [CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785",
24  [CPU_SH7786] = "SH7786", [CPU_SH7757] = "SH7757",
25  [CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3",
26  [CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103",
27  [CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723",
28  [CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724",
29  [CPU_SH7372] = "SH7372", [CPU_SH7734] = "SH7734",
30  [CPU_SH_NONE] = "Unknown"
31 };
32 
33 const char *get_cpu_subtype(struct sh_cpuinfo *c)
34 {
35  return cpu_name[c->type];
36 }
37 EXPORT_SYMBOL(get_cpu_subtype);
38 
39 #ifdef CONFIG_PROC_FS
40 /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
41 static const char *cpu_flags[] = {
42  "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
43  "ptea", "llsc", "l2", "op32", "pteaex", NULL
44 };
45 
46 static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
47 {
48  unsigned long i;
49 
50  seq_printf(m, "cpu flags\t:");
51 
52  if (!c->flags) {
53  seq_printf(m, " %s\n", cpu_flags[0]);
54  return;
55  }
56 
57  for (i = 0; cpu_flags[i]; i++)
58  if ((c->flags & (1 << i)))
59  seq_printf(m, " %s", cpu_flags[i+1]);
60 
61  seq_printf(m, "\n");
62 }
63 
64 static void show_cacheinfo(struct seq_file *m, const char *type,
65  struct cache_info info)
66 {
67  unsigned int cache_size;
68 
69  cache_size = info.ways * info.sets * info.linesz;
70 
71  seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
72  type, cache_size >> 10, info.ways);
73 }
74 
75 /*
76  * Get CPU information for use by the procfs.
77  */
78 static int show_cpuinfo(struct seq_file *m, void *v)
79 {
80  struct sh_cpuinfo *c = v;
81  unsigned int cpu = c - cpu_data;
82 
83  if (!cpu_online(cpu))
84  return 0;
85 
86  if (cpu == 0)
87  seq_printf(m, "machine\t\t: %s\n", get_system_type());
88  else
89  seq_printf(m, "\n");
90 
91  seq_printf(m, "processor\t: %d\n", cpu);
92  seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
93  seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
94  if (c->cut_major == -1)
95  seq_printf(m, "cut\t\t: unknown\n");
96  else if (c->cut_minor == -1)
97  seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
98  else
99  seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
100 
101  show_cpuflags(m, c);
102 
103  seq_printf(m, "cache type\t: ");
104 
105  /*
106  * Check for what type of cache we have, we support both the
107  * unified cache on the SH-2 and SH-3, as well as the harvard
108  * style cache on the SH-4.
109  */
110  if (c->icache.flags & SH_CACHE_COMBINED) {
111  seq_printf(m, "unified\n");
112  show_cacheinfo(m, "cache", c->icache);
113  } else {
114  seq_printf(m, "split (harvard)\n");
115  show_cacheinfo(m, "icache", c->icache);
116  show_cacheinfo(m, "dcache", c->dcache);
117  }
118 
119  /* Optional secondary cache */
120  if (c->flags & CPU_HAS_L2_CACHE)
121  show_cacheinfo(m, "scache", c->scache);
122 
123  seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);
124 
125  seq_printf(m, "bogomips\t: %lu.%02lu\n",
126  c->loops_per_jiffy/(500000/HZ),
127  (c->loops_per_jiffy/(5000/HZ)) % 100);
128 
129  return 0;
130 }
131 
132 static void *c_start(struct seq_file *m, loff_t *pos)
133 {
134  return *pos < NR_CPUS ? cpu_data + *pos : NULL;
135 }
136 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
137 {
138  ++*pos;
139  return c_start(m, pos);
140 }
141 static void c_stop(struct seq_file *m, void *v)
142 {
143 }
144 const struct seq_operations cpuinfo_op = {
145  .start = c_start,
146  .next = c_next,
147  .stop = c_stop,
148  .show = show_cpuinfo,
149 };
150 #endif /* CONFIG_PROC_FS */
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