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Linux/arch/sh/kernel/cpu/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_J2]        = "J2",
 31         [CPU_SH_NONE]   = "Unknown"
 32 };
 33 
 34 const char *get_cpu_subtype(struct sh_cpuinfo *c)
 35 {
 36         return cpu_name[c->type];
 37 }
 38 EXPORT_SYMBOL(get_cpu_subtype);
 39 
 40 #ifdef CONFIG_PROC_FS
 41 /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
 42 static const char *cpu_flags[] = {
 43         "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
 44         "ptea", "llsc", "l2", "op32", "pteaex", NULL
 45 };
 46 
 47 static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
 48 {
 49         unsigned long i;
 50 
 51         seq_printf(m, "cpu flags\t:");
 52 
 53         if (!c->flags) {
 54                 seq_printf(m, " %s\n", cpu_flags[0]);
 55                 return;
 56         }
 57 
 58         for (i = 0; cpu_flags[i]; i++)
 59                 if ((c->flags & (1 << i)))
 60                         seq_printf(m, " %s", cpu_flags[i+1]);
 61 
 62         seq_printf(m, "\n");
 63 }
 64 
 65 static void show_cacheinfo(struct seq_file *m, const char *type,
 66                            struct cache_info info)
 67 {
 68         unsigned int cache_size;
 69 
 70         cache_size = info.ways * info.sets * info.linesz;
 71 
 72         seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
 73                    type, cache_size >> 10, info.ways);
 74 }
 75 
 76 /*
 77  *      Get CPU information for use by the procfs.
 78  */
 79 static int show_cpuinfo(struct seq_file *m, void *v)
 80 {
 81         struct sh_cpuinfo *c = v;
 82         unsigned int cpu = c - cpu_data;
 83 
 84         if (!cpu_online(cpu))
 85                 return 0;
 86 
 87         if (cpu == 0)
 88                 seq_printf(m, "machine\t\t: %s\n", get_system_type());
 89         else
 90                 seq_printf(m, "\n");
 91 
 92         seq_printf(m, "processor\t: %d\n", cpu);
 93         seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
 94         seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
 95         if (c->cut_major == -1)
 96                 seq_printf(m, "cut\t\t: unknown\n");
 97         else if (c->cut_minor == -1)
 98                 seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
 99         else
100                 seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
101 
102         show_cpuflags(m, c);
103 
104         seq_printf(m, "cache type\t: ");
105 
106         /*
107          * Check for what type of cache we have, we support both the
108          * unified cache on the SH-2 and SH-3, as well as the harvard
109          * style cache on the SH-4.
110          */
111         if (c->icache.flags & SH_CACHE_COMBINED) {
112                 seq_printf(m, "unified\n");
113                 show_cacheinfo(m, "cache", c->icache);
114         } else {
115                 seq_printf(m, "split (harvard)\n");
116                 show_cacheinfo(m, "icache", c->icache);
117                 show_cacheinfo(m, "dcache", c->dcache);
118         }
119 
120         /* Optional secondary cache */
121         if (c->flags & CPU_HAS_L2_CACHE)
122                 show_cacheinfo(m, "scache", c->scache);
123 
124         seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);
125 
126         seq_printf(m, "bogomips\t: %lu.%02lu\n",
127                      c->loops_per_jiffy/(500000/HZ),
128                      (c->loops_per_jiffy/(5000/HZ)) % 100);
129 
130         return 0;
131 }
132 
133 static void *c_start(struct seq_file *m, loff_t *pos)
134 {
135         return *pos < NR_CPUS ? cpu_data + *pos : NULL;
136 }
137 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
138 {
139         ++*pos;
140         return c_start(m, pos);
141 }
142 static void c_stop(struct seq_file *m, void *v)
143 {
144 }
145 const struct seq_operations cpuinfo_op = {
146         .start  = c_start,
147         .next   = c_next,
148         .stop   = c_stop,
149         .show   = show_cpuinfo,
150 };
151 #endif /* CONFIG_PROC_FS */
152 

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