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