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/mips_machine.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         seq_printf(m, "ASEs implemented\t:%s%s%s%s%s%s\n",
  68                       cpu_has_mips16 ? " mips16" : "",
  69                       cpu_has_mdmx ? " mdmx" : "",
  70                       cpu_has_mips3d ? " mips3d" : "",
  71                       cpu_has_smartmips ? " smartmips" : "",
  72                       cpu_has_dsp ? " dsp" : "",
  73                       cpu_has_mipsmt ? " mt" : ""
  74                 );
  75         seq_printf(m, "shadow register sets\t: %d\n",
  76                       cpu_data[n].srsets);
  77         seq_printf(m, "kscratch registers\t: %d\n",
  78                       hweight8(cpu_data[n].kscratch_mask));
  79         seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
  80
  81         sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
  82                       cpu_has_vce ? "%u" : "not available");
  83         seq_printf(m, fmt, 'D', vced_count);
  84         seq_printf(m, fmt, 'I', vcei_count);
  85         seq_printf(m, "\n");
  86
  87         return 0;
  88 }
  89
  90 static void *c_start(struct seq_file *m, loff_t *pos)
  91 {
  92         unsigned long i = *pos;
  93
  94         return i < NR_CPUS ? (void *) (i + 1) : NULL;
  95 }
  96
  97 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
  98 {
  99         ++*pos;
 100         return c_start(m, pos);
 101 }
 102
 103 static void c_stop(struct seq_file *m, void *v)
 104 {
 105 }
 106
 107 const struct seq_operations cpuinfo_op = {
 108         .start  = c_start,
 109         .next   = c_next,
 110         .stop   = c_stop,
 111         .show   = show_cpuinfo,
 112 };