LXR linux/arch/sh/kernel/cpu/proc.c

   1// SPDX-License-Identifier: GPL-2.0
   2#include <linux/seq_file.h>
   3#include <linux/kernel.h>
   4#include <linux/module.h>
   5#include <asm/machvec.h>
   6#include <asm/processor.h>
   7
   8static const char *cpu_name[] = {
   9        [CPU_SH7201]    = "SH7201",
  10        [CPU_SH7203]    = "SH7203",     [CPU_SH7263]    = "SH7263",
  11        [CPU_SH7264]    = "SH7264",     [CPU_SH7269]    = "SH7269",
  12        [CPU_SH7206]    = "SH7206",     [CPU_SH7619]    = "SH7619",
  13        [CPU_SH7705]    = "SH7705",     [CPU_SH7706]    = "SH7706",
  14        [CPU_SH7707]    = "SH7707",     [CPU_SH7708]    = "SH7708",
  15        [CPU_SH7709]    = "SH7709",     [CPU_SH7710]    = "SH7710",
  16        [CPU_SH7712]    = "SH7712",     [CPU_SH7720]    = "SH7720",
  17        [CPU_SH7721]    = "SH7721",     [CPU_SH7729]    = "SH7729",
  18        [CPU_SH7750]    = "SH7750",     [CPU_SH7750S]   = "SH7750S",
  19        [CPU_SH7750R]   = "SH7750R",    [CPU_SH7751]    = "SH7751",
  20        [CPU_SH7751R]   = "SH7751R",    [CPU_SH7760]    = "SH7760",
  21        [CPU_SH4_202]   = "SH4-202",    [CPU_SH4_501]   = "SH4-501",
  22        [CPU_SH7763]    = "SH7763",     [CPU_SH7770]    = "SH7770",
  23        [CPU_SH7780]    = "SH7780",     [CPU_SH7781]    = "SH7781",
  24        [CPU_SH7343]    = "SH7343",     [CPU_SH7785]    = "SH7785",
  25        [CPU_SH7786]    = "SH7786",     [CPU_SH7757]    = "SH7757",
  26        [CPU_SH7722]    = "SH7722",     [CPU_SHX3]      = "SH-X3",
  27        [CPU_MXG]       = "MX-G",       [CPU_SH7723]    = "SH7723",
  28        [CPU_SH7366]    = "SH7366",     [CPU_SH7724]    = "SH7724",
  29        [CPU_SH7372]    = "SH7372",     [CPU_SH7734]    = "SH7734",
  30        [CPU_J2]        = "J2",
  31        [CPU_SH_NONE]   = "Unknown"
  32};
  33
  34const char *get_cpu_subtype(struct sh_cpuinfo *c)
  35{
  36        return cpu_name[c->type];
  37}
  38EXPORT_SYMBOL(get_cpu_subtype);
  39
  40#ifdef CONFIG_PROC_FS
  41/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
  42static const char *cpu_flags[] = {
  43        "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
  44        "ptea", "llsc", "l2", "op32", "pteaex", NULL
  45};
  46
  47static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
  48{
  49        unsigned long i;
  50
  51        seq_printf(m, "cpu flags\t:");
  52
  53        if (!c->flags) {
  54                seq_printf(m, " %s\n", cpu_flags[0]);
  55                return;
  56        }
  57
  58        for (i = 0; cpu_flags[i]; i++)
  59                if ((c->flags & (1 << i)))
  60                        seq_printf(m, " %s", cpu_flags[i+1]);
  61
  62        seq_printf(m, "\n");
  63}
  64
  65static void show_cacheinfo(struct seq_file *m, const char *type,
  66                           struct cache_info info)
  67{
  68        unsigned int cache_size;
  69
  70        cache_size = info.ways * info.sets * info.linesz;
  71
  72        seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
  73                   type, cache_size >> 10, info.ways);
  74}
  75
  76/*
  77 *      Get CPU information for use by the procfs.
  78 */
  79static int show_cpuinfo(struct seq_file *m, void *v)
  80{
  81        struct sh_cpuinfo *c = v;
  82        unsigned int cpu = c - cpu_data;
  83
  84        if (!cpu_online(cpu))
  85                return 0;
  86
  87        if (cpu == 0)
  88                seq_printf(m, "machine\t\t: %s\n", get_system_type());
  89        else
  90                seq_printf(m, "\n");
  91
  92        seq_printf(m, "processor\t: %d\n", cpu);
  93        seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
  94        seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
  95        if (c->cut_major == -1)
  96                seq_printf(m, "cut\t\t: unknown\n");
  97        else if (c->cut_minor == -1)
  98                seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
  99        else
 100                seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
 101
 102        show_cpuflags(m, c);
 103
 104        seq_printf(m, "cache type\t: ");
 105
 106        /*
 107         * Check for what type of cache we have, we support both the
 108         * unified cache on the SH-2 and SH-3, as well as the harvard
 109         * style cache on the SH-4.
 110         */
 111        if (c->icache.flags & SH_CACHE_COMBINED) {
 112                seq_printf(m, "unified\n");
 113                show_cacheinfo(m, "cache", c->icache);
 114        } else {
 115                seq_printf(m, "split (harvard)\n");
 116                show_cacheinfo(m, "icache", c->icache);
 117                show_cacheinfo(m, "dcache", c->dcache);
 118        }
 119
 120        /* Optional secondary cache */
 121        if (c->flags & CPU_HAS_L2_CACHE)
 122                show_cacheinfo(m, "scache", c->scache);
 123
 124        seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);
 125
 126        seq_printf(m, "bogomips\t: %lu.%02lu\n",
 127                     c->loops_per_jiffy/(500000/HZ),
 128                     (c->loops_per_jiffy/(5000/HZ)) % 100);
 129
 130        return 0;
 131}
 132
 133static void *c_start(struct seq_file *m, loff_t *pos)
 134{
 135        return *pos < NR_CPUS ? cpu_data + *pos : NULL;
 136}
 137static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 138{
 139        ++*pos;
 140        return c_start(m, pos);
 141}
 142static void c_stop(struct seq_file *m, void *v)
 143{
 144}
 145const struct seq_operations cpuinfo_op = {
 146        .start  = c_start,
 147        .next   = c_next,
 148        .stop   = c_stop,
 149        .show   = show_cpuinfo,
 150};
 151#endif /* CONFIG_PROC_FS */
 152