arch/mips/kernel/proc.c

   1 /*
   2  *  Copyright (C) 1995, 1996, 2001  Ralf Baechle
   3  *  Copyright (C) 2001, 2004  MIPS Technologies, Inc.
   4  *  Copyright (C) 2004  Maciej W. Rozycki
   5  */
   6 #include <linux/delay.h>
   7 #include <linux/kernel.h>
   8 #include <linux/sched.h>
   9 #include <linux/seq_file.h>
  10 #include <asm/bootinfo.h>
  11 #include <asm/cpu.h>
  12 #include <asm/cpu-features.h>
  13 #include <asm/mipsregs.h>
  14 #include <asm/processor.h>
  15 #include <asm/prom.h>
  16
  17 unsigned int vced_count, vcei_count;
  18
  19 static int show_cpuinfo(struct seq_file *m, void *v)
  20 {
  21         unsigned long n = (unsigned long) v - 1;
  22         unsigned int version = cpu_data[n].processor_id;
  23         unsigned int fp_vers = cpu_data[n].fpu_id;
  24         char fmt [64];
  25         int i;
  26
  27 #ifdef CONFIG_SMP
  28         if (!cpu_online(n))
  29                 return 0;
  30 #endif
  31
  32         /*
  33          * For the first processor also print the system type
  34          */
  35         if (n == 0) {
  36                 seq_printf(m, "system type\t\t: %s\n", get_system_type());
  37                 if (mips_get_machine_name())
  38                         seq_printf(m, "machine\t\t\t: %s\n",
  39                                    mips_get_machine_name());
  40         }
  41
  42         seq_printf(m, "processor\t\t: %ld\n", n);
  43         sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",
  44                       cpu_data[n].options & MIPS_CPU_FPU ? "  FPU V%d.%d" : "");
  45         seq_printf(m, fmt, __cpu_name[n],
  46                       (version >> 4) & 0x0f, version & 0x0f,
  47                       (fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
  48         seq_printf(m, "BogoMIPS\t\t: %u.%02u\n",
  49                       cpu_data[n].udelay_val / (500000/HZ),
  50                       (cpu_data[n].udelay_val / (5000/HZ)) % 100);
  51         seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
  52         seq_printf(m, "microsecond timers\t: %s\n",
  53                       cpu_has_counter ? "yes" : "no");
  54         seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize);
  55         seq_printf(m, "extra interrupt vector\t: %s\n",
  56                       cpu_has_divec ? "yes" : "no");
  57         seq_printf(m, "hardware watchpoint\t: %s",
  58                       cpu_has_watch ? "yes, " : "no\n");
  59         if (cpu_has_watch) {
  60                 seq_printf(m, "count: %d, address/irw mask: [",
  61                       cpu_data[n].watch_reg_count);
  62                 for (i = 0; i < cpu_data[n].watch_reg_count; i++)
  63                         seq_printf(m, "%s0x%04x", i ? ", " : "" ,
  64                                 cpu_data[n].watch_reg_masks[i]);
  65                 seq_printf(m, "]\n");
  66         }
  67         if (cpu_has_mips_r) {
  68                 seq_printf(m, "isa\t\t\t:");
  69                 if (cpu_has_mips_1)
  70                         seq_printf(m, "%s", " mips1");
  71                 if (cpu_has_mips_2)
  72                         seq_printf(m, "%s", " mips2");
  73                 if (cpu_has_mips_3)
  74                         seq_printf(m, "%s", " mips3");
  75                 if (cpu_has_mips_4)
  76                         seq_printf(m, "%s", " mips4");
  77                 if (cpu_has_mips_5)
  78                         seq_printf(m, "%s", " mips5");
  79                 if (cpu_has_mips32r1)
  80                         seq_printf(m, "%s", " mips32r1");
  81                 if (cpu_has_mips32r2)
  82                         seq_printf(m, "%s", " mips32r2");
  83                 if (cpu_has_mips64r1)
  84                         seq_printf(m, "%s", " mips64r1");
  85                 if (cpu_has_mips64r2)
  86                         seq_printf(m, "%s", " mips64r2");
  87                 seq_printf(m, "\n");
  88         }
  89
  90         seq_printf(m, "ASEs implemented\t:");
  91         if (cpu_has_mips16)     seq_printf(m, "%s", " mips16");
  92         if (cpu_has_mdmx)       seq_printf(m, "%s", " mdmx");
  93         if (cpu_has_mips3d)     seq_printf(m, "%s", " mips3d");
  94         if (cpu_has_smartmips)  seq_printf(m, "%s", " smartmips");
  95         if (cpu_has_dsp)        seq_printf(m, "%s", " dsp");
  96         if (cpu_has_dsp2)       seq_printf(m, "%s", " dsp2");
  97         if (cpu_has_mipsmt)     seq_printf(m, "%s", " mt");
  98         if (cpu_has_mmips)      seq_printf(m, "%s", " micromips");
  99         if (cpu_has_vz)         seq_printf(m, "%s", " vz");
 100         seq_printf(m, "\n");
 101
 102         if (cpu_has_mmips) {
 103                 seq_printf(m, "micromips kernel\t: %s\n",
 104                       (read_c0_config3() & MIPS_CONF3_ISA_OE) ?  "yes" : "no");
 105         }
 106         seq_printf(m, "shadow register sets\t: %d\n",
 107                       cpu_data[n].srsets);
 108         seq_printf(m, "kscratch registers\t: %d\n",
 109                       hweight8(cpu_data[n].kscratch_mask));
 110         seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
 111
 112         sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
 113                       cpu_has_vce ? "%u" : "not available");
 114         seq_printf(m, fmt, 'D', vced_count);
 115         seq_printf(m, fmt, 'I', vcei_count);
 116         seq_printf(m, "\n");
 117
 118         return 0;
 119 }
 120
 121 static void *c_start(struct seq_file *m, loff_t *pos)
 122 {
 123         unsigned long i = *pos;
 124
 125         return i < NR_CPUS ? (void *) (i + 1) : NULL;
 126 }
 127
 128 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 129 {
 130         ++*pos;
 131         return c_start(m, pos);
 132 }
 133
 134 static void c_stop(struct seq_file *m, void *v)
 135 {
 136 }
 137
 138 const struct seq_operations cpuinfo_op = {
 139         .start  = c_start,
 140         .next   = c_next,
 141         .stop   = c_stop,
 142         .show   = show_cpuinfo,
 143 };