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_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
11 [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
12 [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
13 [CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710",
14 [CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720",
15 [CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729",
16 [CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S",
17 [CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751",
18 [CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760",
19 [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
20 [CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770",
21 [CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781",
22 [CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785",
23 [CPU_SH7786] = "SH7786", [CPU_SH7757] = "SH7757",
24 [CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3",
25 [CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103",
26 [CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723",
27 [CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724",
28 [CPU_SH7372] = "SH7372", [CPU_SH_NONE] = "Unknown"
29 };
30
get_cpu_subtype(struct sh_cpuinfo * c)31 const char *get_cpu_subtype(struct sh_cpuinfo *c)
32 {
33 return cpu_name[c->type];
34 }
35 EXPORT_SYMBOL(get_cpu_subtype);
36
37 #ifdef CONFIG_PROC_FS
38 /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
39 static const char *cpu_flags[] = {
40 "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
41 "ptea", "llsc", "l2", "op32", "pteaex", NULL
42 };
43
show_cpuflags(struct seq_file * m,struct sh_cpuinfo * c)44 static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
45 {
46 unsigned long i;
47
48 seq_printf(m, "cpu flags\t:");
49
50 if (!c->flags) {
51 seq_printf(m, " %s\n", cpu_flags[0]);
52 return;
53 }
54
55 for (i = 0; cpu_flags[i]; i++)
56 if ((c->flags & (1 << i)))
57 seq_printf(m, " %s", cpu_flags[i+1]);
58
59 seq_printf(m, "\n");
60 }
61
show_cacheinfo(struct seq_file * m,const char * type,struct cache_info info)62 static void show_cacheinfo(struct seq_file *m, const char *type,
63 struct cache_info info)
64 {
65 unsigned int cache_size;
66
67 cache_size = info.ways * info.sets * info.linesz;
68
69 seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
70 type, cache_size >> 10, info.ways);
71 }
72
73 /*
74 * Get CPU information for use by the procfs.
75 */
show_cpuinfo(struct seq_file * m,void * v)76 static int show_cpuinfo(struct seq_file *m, void *v)
77 {
78 struct sh_cpuinfo *c = v;
79 unsigned int cpu = c - cpu_data;
80
81 if (!cpu_online(cpu))
82 return 0;
83
84 if (cpu == 0)
85 seq_printf(m, "machine\t\t: %s\n", get_system_type());
86 else
87 seq_printf(m, "\n");
88
89 seq_printf(m, "processor\t: %d\n", cpu);
90 seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
91 seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
92 if (c->cut_major == -1)
93 seq_printf(m, "cut\t\t: unknown\n");
94 else if (c->cut_minor == -1)
95 seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
96 else
97 seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
98
99 show_cpuflags(m, c);
100
101 seq_printf(m, "cache type\t: ");
102
103 /*
104 * Check for what type of cache we have, we support both the
105 * unified cache on the SH-2 and SH-3, as well as the harvard
106 * style cache on the SH-4.
107 */
108 if (c->icache.flags & SH_CACHE_COMBINED) {
109 seq_printf(m, "unified\n");
110 show_cacheinfo(m, "cache", c->icache);
111 } else {
112 seq_printf(m, "split (harvard)\n");
113 show_cacheinfo(m, "icache", c->icache);
114 show_cacheinfo(m, "dcache", c->dcache);
115 }
116
117 /* Optional secondary cache */
118 if (c->flags & CPU_HAS_L2_CACHE)
119 show_cacheinfo(m, "scache", c->scache);
120
121 seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);
122
123 seq_printf(m, "bogomips\t: %lu.%02lu\n",
124 c->loops_per_jiffy/(500000/HZ),
125 (c->loops_per_jiffy/(5000/HZ)) % 100);
126
127 return 0;
128 }
129
c_start(struct seq_file * m,loff_t * pos)130 static void *c_start(struct seq_file *m, loff_t *pos)
131 {
132 return *pos < NR_CPUS ? cpu_data + *pos : NULL;
133 }
c_next(struct seq_file * m,void * v,loff_t * pos)134 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
135 {
136 ++*pos;
137 return c_start(m, pos);
138 }
c_stop(struct seq_file * m,void * v)139 static void c_stop(struct seq_file *m, void *v)
140 {
141 }
142 const struct seq_operations cpuinfo_op = {
143 .start = c_start,
144 .next = c_next,
145 .stop = c_stop,
146 .show = show_cpuinfo,
147 };
148 #endif /* CONFIG_PROC_FS */
149