release/src-rt-6.x.4708/linux/linux-2.6.36/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
  16 unsigned int vced_count, vcei_count;
  17
  18 static int show_cpuinfo(struct seq_file *m, void *v)
  19 {
  20         unsigned long n = (unsigned long) v - 1;
  21         unsigned int version = cpu_data[n].processor_id;
  22         unsigned int fp_vers = cpu_data[n].fpu_id;
  23         char fmt [64];
  24         int i;
  25
  26 #ifdef CONFIG_SMP
  27         if (!cpu_isset(n, cpu_online_map))
  28                 return 0;
  29 #endif
  30
  31         /*
  32          * For the first processor also print the system type
  33          */
  34         if (n == 0)
  35                 seq_printf(m, "system type\t\t: %s\n", get_system_type());
  36
  37         seq_printf(m, "processor\t\t: %ld\n", n);
  38         sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",
  39         cpu_data[n].options & MIPS_CPU_FPU ? "  FPU V%d.%d" : "");
  40         seq_printf(m, fmt, __cpu_name[n],
  41                       (version >> 4) & 0x0f, version & 0x0f,
  42                       (fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
  43         seq_printf(m, "BogoMIPS\t\t: %u.%02u\n",
  44                       cpu_data[n].udelay_val / (500000/HZ),
  45                       (cpu_data[n].udelay_val / (5000/HZ)) % 100);
  46         seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
  47         seq_printf(m, "microsecond timers\t: %s\n",
  48                       cpu_has_counter ? "yes" : "no");
  49         seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize);
  50         seq_printf(m, "extra interrupt vector\t: %s\n",
  51                       cpu_has_divec ? "yes" : "no");
  52         seq_printf(m, "hardware watchpoint\t: %s",
  53                       cpu_has_watch ? "yes, " : "no\n");
  54         if (cpu_has_watch) {
  55                 seq_printf(m, "count: %d, address/irw mask: [",
  56                       cpu_data[n].watch_reg_count);
  57                 for (i = 0; i < cpu_data[n].watch_reg_count; i++)
  58                         seq_printf(m, "%s0x%04x", i ? ", " : "" ,
  59                                 cpu_data[n].watch_reg_masks[i]);
  60                 seq_printf(m, "]\n");
  61         }
  62         seq_printf(m, "microMIPS\t\t: %s\n", cpu_has_mmips ? "yes" : "no");
  63         seq_printf(m, "ASEs implemented\t:%s%s%s%s%s%s\n",
  64                       cpu_has_mips16 ? " mips16" : "",
  65                       cpu_has_mdmx ? " mdmx" : "",
  66                       cpu_has_mips3d ? " mips3d" : "",
  67                       cpu_has_smartmips ? " smartmips" : "",
  68                       cpu_has_dsp ? " dsp" : "",
  69                       cpu_has_mipsmt ? " mt" : ""
  70                 );
  71         seq_printf(m, "shadow register sets\t: %d\n",
  72                        cpu_data[n].srsets);
  73         seq_printf(m, "kscratch registers\t: %d\n",
  74                    hweight8(cpu_data[n].kscratch_mask));
  75         seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
  76
  77         sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
  78                       cpu_has_vce ? "%u" : "not available");
  79         seq_printf(m, fmt, 'D', vced_count);
  80         seq_printf(m, fmt, 'I', vcei_count);
  81         seq_printf(m, "\n");
  82
  83         return 0;
  84 }
  85
  86 static void *c_start(struct seq_file *m, loff_t *pos)
  87 {
  88         unsigned long i = *pos;
  89
  90         return i < NR_CPUS ? (void *) (i + 1) : NULL;
  91 }
  92
  93 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
  94 {
  95         ++*pos;
  96         return c_start(m, pos);
  97 }
  98
  99 static void c_stop(struct seq_file *m, void *v)
 100 {
 101 }
 102
 103 const struct seq_operations cpuinfo_op = {
 104         .start  = c_start,
 105         .next   = c_next,
 106         .stop   = c_stop,
 107         .show   = show_cpuinfo,
 108 };