proc.c (4117B)
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 */