arch/mips64/kernel/proc.c

   1 /* $Id: proc.c,v 1.1 1999/09/28 22:25:51 ralf Exp $
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1995, 1996, 1999 Ralf Baechle
   8  *
   9  * XXX Rewrite this mess.
  10  */
  11 #include <linux/delay.h>
  12 #include <linux/kernel.h>
  13 #include <linux/sched.h>
  14 #include <linux/smp.h>
  15 #include <asm/bootinfo.h>
  16 #include <asm/mipsregs.h>
  17 #include <asm/processor.h>
  18 #include <asm/watch.h>
  19
  20 unsigned long unaligned_instructions;
  21 unsigned int vced_count, vcei_count;
  22
  23 /*
  24  * BUFFER is PAGE_SIZE bytes long.
  25  *
  26  * Currently /proc/cpuinfo is being abused to print data about the
  27  * number of date/instruction cacheflushes.
  28  */
  29 int get_cpuinfo(char *buffer, char **start, off_t offset, int count)
  30 {
  31         char fmt [64];
  32         struct cpuinfo_mips *c = cpu_data;
  33         size_t len = 0;
  34   int n;
  35
  36   for (n = 0; n < smp_num_cpus; n++, c++) {
  37                 len += sprintf(buffer + len, "processor\t\t: %d\n", n);
  38                 len += sprintf(buffer + len, "vendor_id\t\t: MIPS\n");
  39                 len += sprintf(buffer + len, "model name\t\t: R10000\n");
  40 /*              len += sprintf(buffer + len, "cpu model\t\t: %s V%d.%d\n",
  41                        cpu_name[mips_cputype <= CPU_LAST ?
  42                                 mips_cputype :
  43                                 CPU_UNKNOWN],
  44                        (version >> 4) & 0x0f,
  45                        version & 0x0f);
  46                 len += sprintf(buffer + len, "system type\t\t: %s %s\n",
  47                        mach_group_names[mips_machgroup],
  48                        mach_group_to_name[mips_machgroup][mips_machtype]);
  49 */
  50                 len += sprintf(buffer + len, "BogoMIPS\t\t: %lu.%02lu\n",
  51                        (loops_per_sec + 2500) / 500000,
  52                        ((loops_per_sec + 2500) / 5000) % 100);
  53 /*              len += sprintf(buffer + len, "Number of cpus\t\t: %d\n", smp_num_cpus);*/
  54 #if defined (__MIPSEB__)
  55                 len += sprintf(buffer + len, "byteorder\t\t: big endian\n");
  56 #endif
  57 #if defined (__MIPSEL__)
  58                 len += sprintf(buffer + len, "byteorder\t\t: little endian\n");
  59 #endif
  60                 len += sprintf(buffer + len, "unaligned accesses\t: %lu\n",
  61                        unaligned_instructions);
  62                 len += sprintf(buffer + len, "wait instruction\t: %s\n",
  63                        wait_available ? "yes" : "no");
  64                 len += sprintf(buffer + len, "microsecond timers\t: %s\n",
  65                        cyclecounter_available ? "yes" : "no");
  66                 len += sprintf(buffer + len, "extra interrupt vector\t: %s\n",
  67                        dedicated_iv_available ? "yes" : "no");
  68                 len += sprintf(buffer + len, "hardware watchpoint\t: %s\n",
  69                        watch_available ? "yes" : "no");
  70
  71                 sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
  72                 vce_available ? "%d" : "not available");
  73                 len += sprintf(buffer + len, fmt, 'D', vced_count);
  74                 len += sprintf(buffer + len, fmt, 'I', vcei_count);
  75                 len += sprintf(buffer + len, "\n");
  76
  77                 if (len < offset)
  78                         offset -= len, len = 0;
  79                 else if (len >= offset + count)
  80                         goto leave_loop;
  81         }
  82
  83 leave_loop:
  84         *start = buffer + offset;
  85         len -= offset;
  86         if (len < 0)
  87                 len = 0;
  88         return len > count ? count : len;
  89
  90 }
  91
  92 void init_irq_proc(void)
  93 {
  94         /* Nothing, for now.  */
  95 }