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   1 /*
   2  *  linux/arch/mips/kernel/proc.c
   3  *
   4  *  Copyright (C) 1995, 1996, 2001  Ralf Baechle
   5  *  Copyright (C) 2001, 2004  MIPS Technologies, Inc.
   6  *  Copyright (C) 2004  Maciej W. Rozycki
   7  */
   8 #include <linux/config.h>
   9 #include <linux/delay.h>
  10 #include <linux/kernel.h>
  11 #include <linux/sched.h>
  12 #include <linux/seq_file.h>
  13 #include <asm/bootinfo.h>
  14 #include <asm/cpu.h>
  15 #include <asm/cpu-features.h>
  16 #include <asm/mipsregs.h>
  17 #include <asm/processor.h>
  18 #include <asm/watch.h>
  19
  20 unsigned int vced_count, vcei_count;
  21
  22 static const char *cpu_name[] = {
  23         [CPU_UNKNOWN]   = "unknown",
  24         [CPU_R2000]     = "R2000",
  25         [CPU_R3000]     = "R3000",
  26         [CPU_R3000A]    = "R3000A",
  27         [CPU_R3041]     = "R3041",
  28         [CPU_R3051]     = "R3051",
  29         [CPU_R3052]     = "R3052",
  30         [CPU_R3081]     = "R3081",
  31         [CPU_R3081E]    = "R3081E",
  32         [CPU_R4000PC]   = "R4000PC",
  33         [CPU_R4000SC]   = "R4000SC",
  34         [CPU_R4000MC]   = "R4000MC",
  35         [CPU_R4200]     = "R4200",
  36         [CPU_R4400PC]   = "R4400PC",
  37         [CPU_R4400SC]   = "R4400SC",
  38         [CPU_R4400MC]   = "R4400MC",
  39         [CPU_R4600]     = "R4600",
  40         [CPU_R6000]     = "R6000",
  41         [CPU_R6000A]    = "R6000A",
  42         [CPU_R8000]     = "R8000",
  43         [CPU_R10000]    = "R10000",
  44         [CPU_R12000]    = "R12000",
  45         [CPU_R4300]     = "R4300",
  46         [CPU_R4650]     = "R4650",
  47         [CPU_R4700]     = "R4700",
  48         [CPU_R5000]     = "R5000",
  49         [CPU_R5000A]    = "R5000A",
  50         [CPU_R4640]     = "R4640",
  51         [CPU_NEVADA]    = "Nevada",
  52         [CPU_RM7000]    = "RM7000",
  53         [CPU_RM9000]    = "RM9000",
  54         [CPU_R5432]     = "R5432",
  55         [CPU_4KC]       = "MIPS 4Kc",
  56         [CPU_5KC]       = "MIPS 5Kc",
  57         [CPU_R4310]     = "R4310",
  58         [CPU_SB1]       = "SiByte SB1",
  59         [CPU_TX3912]    = "TX3912",
  60         [CPU_TX3922]    = "TX3922",
  61         [CPU_TX3927]    = "TX3927",
  62         [CPU_AU1000]    = "Au1000",
  63         [CPU_AU1500]    = "Au1500",
  64         [CPU_AU1100]    = "Au1100",
  65         [CPU_AU1550]    = "Au1550",
  66         [CPU_AU1200]    = "Au1200",
  67         [CPU_4KEC]      = "MIPS 4KEc",
  68         [CPU_4KSC]      = "MIPS 4KSc",
  69         [CPU_VR41XX]    = "NEC Vr41xx",
  70         [CPU_R5500]     = "R5500",
  71         [CPU_TX49XX]    = "TX49xx",
  72         [CPU_20KC]      = "MIPS 20Kc",
  73         [CPU_24K]       = "MIPS 24K",
  74         [CPU_25KF]      = "MIPS 25Kf",
  75         [CPU_34K]       = "MIPS 34K",
  76         [CPU_VR4111]    = "NEC VR4111",
  77         [CPU_VR4121]    = "NEC VR4121",
  78         [CPU_VR4122]    = "NEC VR4122",
  79         [CPU_VR4131]    = "NEC VR4131",
  80         [CPU_VR4133]    = "NEC VR4133",
  81         [CPU_VR4181]    = "NEC VR4181",
  82         [CPU_VR4181A]   = "NEC VR4181A",
  83         [CPU_SR71000]   = "Sandcraft SR71000",
  84         [CPU_PR4450]    = "Philips PR4450",
  85 };
  86
  87
  88 static int show_cpuinfo(struct seq_file *m, void *v)
  89 {
  90         unsigned int version = current_cpu_data.processor_id;
  91         unsigned int fp_vers = current_cpu_data.fpu_id;
  92         unsigned long n = (unsigned long) v - 1;
  93         char fmt [64];
  94
  95 #ifdef CONFIG_SMP
  96         if (!cpu_isset(n, cpu_online_map))
  97                 return 0;
  98 #endif
  99
 100         /*
 101          * For the first processor also print the system type
 102          */
 103         if (n == 0)
 104                 seq_printf(m, "system type\t\t: %s\n", get_system_type());
 105
 106         seq_printf(m, "processor\t\t: %ld\n", n);
 107         sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",
 108                 cpu_has_fpu ? "  FPU V%d.%d" : "");
 109         seq_printf(m, fmt, cpu_name[current_cpu_data.cputype <= CPU_LAST ?
 110                                     current_cpu_data.cputype : CPU_UNKNOWN],
 111                                    (version >> 4) & 0x0f, version & 0x0f,
 112                                    (fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
 113         seq_printf(m, "BogoMIPS\t\t: %lu.%02lu\n",
 114                       cpu_data[n].udelay_val / (500000/HZ),
 115                       (cpu_data[n].udelay_val / (5000/HZ)) % 100);
 116         seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
 117         seq_printf(m, "microsecond timers\t: %s\n",
 118                       cpu_has_counter ? "yes" : "no");
 119         seq_printf(m, "tlb_entries\t\t: %d\n", current_cpu_data.tlbsize);
 120         seq_printf(m, "extra interrupt vector\t: %s\n",
 121                       cpu_has_divec ? "yes" : "no");
 122         seq_printf(m, "hardware watchpoint\t: %s\n",
 123                       cpu_has_watch ? "yes" : "no");
 124         seq_printf(m, "ASEs implemented\t:%s%s%s%s%s%s\n",
 125                       cpu_has_mips16 ? " mips16" : "",
 126                       cpu_has_mdmx ? " mdmx" : "",
 127                       cpu_has_mips3d ? " mips3d" : "",
 128                       cpu_has_smartmips ? " smartmips" : "",
 129                       cpu_has_dsp ? " dsp" : "",
 130                       cpu_has_mipsmt ? " mt" : ""
 131                 );
 132
 133         sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
 134                 cpu_has_vce ? "%u" : "not available");
 135         seq_printf(m, fmt, 'D', vced_count);
 136         seq_printf(m, fmt, 'I', vcei_count);
 137
 138         return 0;
 139 }
 140
 141 static void *c_start(struct seq_file *m, loff_t *pos)
 142 {
 143         unsigned long i = *pos;
 144
 145         return i < NR_CPUS ? (void *) (i + 1) : NULL;
 146 }
 147
 148 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 149 {
 150         ++*pos;
 151         return c_start(m, pos);
 152 }
 153
 154 static void c_stop(struct seq_file *m, void *v)
 155 {
 156 }
 157
 158 struct seq_operations cpuinfo_op = {
 159         .start  = c_start,
 160         .next   = c_next,
 161         .stop   = c_stop,
 162         .show   = show_cpuinfo,
 163 };