arch/mips/kernel/proc.c

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