diff options
Diffstat (limited to 'arch/sh/kernel/cpu/proc.c')
| -rw-r--r-- | arch/sh/kernel/cpu/proc.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/proc.c b/arch/sh/kernel/cpu/proc.c new file mode 100644 index 000000000..a306bcd6b --- /dev/null +++ b/arch/sh/kernel/cpu/proc.c @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/seq_file.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <asm/machvec.h> +#include <asm/processor.h> + +static const char *cpu_name[] = { + [CPU_SH7201] = "SH7201", + [CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263", + [CPU_SH7264] = "SH7264", [CPU_SH7269] = "SH7269", + [CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619", + [CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706", + [CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708", + [CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710", + [CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720", + [CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729", + [CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S", + [CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751", + [CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760", + [CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501", + [CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770", + [CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781", + [CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785", + [CPU_SH7786] = "SH7786", [CPU_SH7757] = "SH7757", + [CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3", + [CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723", + [CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724", + [CPU_SH7372] = "SH7372", [CPU_SH7734] = "SH7734", + [CPU_J2] = "J2", + [CPU_SH_NONE] = "Unknown" +}; + +const char *get_cpu_subtype(struct sh_cpuinfo *c) +{ + return cpu_name[c->type]; +} +EXPORT_SYMBOL(get_cpu_subtype); + +#ifdef CONFIG_PROC_FS +/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */ +static const char *cpu_flags[] = { + "none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr", + "ptea", "llsc", "l2", "op32", "pteaex", NULL +}; + +static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c) +{ + unsigned long i; + + seq_printf(m, "cpu flags\t:"); + + if (!c->flags) { + seq_printf(m, " %s\n", cpu_flags[0]); + return; + } + + for (i = 0; cpu_flags[i]; i++) + if ((c->flags & (1 << i))) + seq_printf(m, " %s", cpu_flags[i+1]); + + seq_printf(m, "\n"); +} + +static void show_cacheinfo(struct seq_file *m, const char *type, + struct cache_info info) +{ + unsigned int cache_size; + + cache_size = info.ways * info.sets * info.linesz; + + seq_printf(m, "%s size\t: %2dKiB (%d-way)\n", + type, cache_size >> 10, info.ways); +} + +/* + * Get CPU information for use by the procfs. + */ +static int show_cpuinfo(struct seq_file *m, void *v) +{ + struct sh_cpuinfo *c = v; + unsigned int cpu = c - cpu_data; + + if (!cpu_online(cpu)) + return 0; + + if (cpu == 0) + seq_printf(m, "machine\t\t: %s\n", get_system_type()); + else + seq_printf(m, "\n"); + + seq_printf(m, "processor\t: %d\n", cpu); + seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine); + seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c)); + if (c->cut_major == -1) + seq_printf(m, "cut\t\t: unknown\n"); + else if (c->cut_minor == -1) + seq_printf(m, "cut\t\t: %d.x\n", c->cut_major); + else + seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor); + + show_cpuflags(m, c); + + seq_printf(m, "cache type\t: "); + + /* + * Check for what type of cache we have, we support both the + * unified cache on the SH-2 and SH-3, as well as the harvard + * style cache on the SH-4. + */ + if (c->icache.flags & SH_CACHE_COMBINED) { + seq_printf(m, "unified\n"); + show_cacheinfo(m, "cache", c->icache); + } else { + seq_printf(m, "split (harvard)\n"); + show_cacheinfo(m, "icache", c->icache); + show_cacheinfo(m, "dcache", c->dcache); + } + + /* Optional secondary cache */ + if (c->flags & CPU_HAS_L2_CACHE) + show_cacheinfo(m, "scache", c->scache); + + seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits); + + seq_printf(m, "bogomips\t: %lu.%02lu\n", + c->loops_per_jiffy/(500000/HZ), + (c->loops_per_jiffy/(5000/HZ)) % 100); + + return 0; +} + +static void *c_start(struct seq_file *m, loff_t *pos) +{ + return *pos < NR_CPUS ? cpu_data + *pos : NULL; +} +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return c_start(m, pos); +} +static void c_stop(struct seq_file *m, void *v) +{ +} +const struct seq_operations cpuinfo_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, +}; +#endif /* CONFIG_PROC_FS */ |