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, 2004  MIPS Technologies, Inc.
   6  *  Copyright (C) 2004  Maciej W. Rozycki
   7  */
   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
  18 unsigned int vced_count, vcei_count;
  19
  20 static int show_cpuinfo(struct seq_file *m, void *v)
  21 {
  22         unsigned long n = (unsigned long) v - 1;
  23         unsigned int version = cpu_data[n].processor_id;
  24         unsigned int fp_vers = cpu_data[n].fpu_id;
  25         char fmt [64];
  26
  27 #ifdef CONFIG_SMP
  28         if (!cpu_isset(n, cpu_online_map))
  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
  38         seq_printf(m, "processor\t\t: %ld\n", n);
  39         sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",
  40                 cpu_data[n].options & MIPS_CPU_FPU ? "  FPU V%d.%d" : "");
  41         seq_printf(m, fmt, __cpu_name[smp_processor_id()],
  42                                    (version >> 4) & 0x0f, version & 0x0f,
  43                                    (fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
  44         seq_printf(m, "BogoMIPS\t\t: %lu.%02lu\n",
  45                       cpu_data[n].udelay_val / (500000/HZ),
  46                       (cpu_data[n].udelay_val / (5000/HZ)) % 100);
  47         seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
  48         seq_printf(m, "microsecond timers\t: %s\n",
  49                       cpu_has_counter ? "yes" : "no");
  50         seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize);
  51         seq_printf(m, "extra interrupt vector\t: %s\n",
  52                       cpu_has_divec ? "yes" : "no");
  53         seq_printf(m, "hardware watchpoint\t: %s\n",
  54                       cpu_has_watch ? "yes" : "no");
  55         seq_printf(m, "ASEs implemented\t:%s%s%s%s%s%s\n",
  56                       cpu_has_mips16 ? " mips16" : "",
  57                       cpu_has_mdmx ? " mdmx" : "",
  58                       cpu_has_mips3d ? " mips3d" : "",
  59                       cpu_has_smartmips ? " smartmips" : "",
  60                       cpu_has_dsp ? " dsp" : "",
  61                       cpu_has_mipsmt ? " mt" : ""
  62                 );
  63
  64         sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
  65                 cpu_has_vce ? "%u" : "not available");
  66         seq_printf(m, fmt, 'D', vced_count);
  67         seq_printf(m, fmt, 'I', vcei_count);
  68         seq_printf(m, "\n");
  69
  70         return 0;
  71 }
  72
  73 static void *c_start(struct seq_file *m, loff_t *pos)
  74 {
  75         unsigned long i = *pos;
  76
  77         return i < NR_CPUS ? (void *) (i + 1) : NULL;
  78 }
  79
  80 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
  81 {
  82         ++*pos;
  83         return c_start(m, pos);
  84 }
  85
  86 static void c_stop(struct seq_file *m, void *v)
  87 {
  88 }
  89
  90 struct seq_operations cpuinfo_op = {
  91         .start  = c_start,
  92         .next   = c_next,
  93         .stop   = c_stop,
  94         .show   = show_cpuinfo,
  95 };