1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 1995, 1996, 2001 Ralf Baechle 4 * Copyright (C) 2001, 2004 MIPS Technologies, Inc. 5 * Copyright (C) 2004 Maciej W. Rozycki 6 */ 7 #include <linux/delay.h> 8 #include <linux/kernel.h> 9 #include <linux/sched.h> 10 #include <linux/seq_file.h> 11 #include <asm/bootinfo.h> 12 #include <asm/cpu.h> 13 #include <asm/cpu-features.h> 14 #include <asm/idle.h> 15 #include <asm/mipsregs.h> 16 #include <asm/processor.h> 17 #include <asm/prom.h> 18 19 unsigned int vced_count, vcei_count; 20 21 /* 22 * No lock; only written during early bootup by CPU 0. 23 */ 24 static RAW_NOTIFIER_HEAD(proc_cpuinfo_chain); 25 26 int __ref register_proc_cpuinfo_notifier(struct notifier_block *nb) 27 { 28 return raw_notifier_chain_register(&proc_cpuinfo_chain, nb); 29 } 30 31 int proc_cpuinfo_notifier_call_chain(unsigned long val, void *v) 32 { 33 return raw_notifier_call_chain(&proc_cpuinfo_chain, val, v); 34 } 35 36 static int show_cpuinfo(struct seq_file *m, void *v) 37 { 38 struct proc_cpuinfo_notifier_args proc_cpuinfo_notifier_args; 39 unsigned long n = (unsigned long) v - 1; 40 unsigned int version = cpu_data[n].processor_id; 41 unsigned int fp_vers = cpu_data[n].fpu_id; 42 char fmt[64]; 43 int i; 44 45 #ifdef CONFIG_SMP 46 if (!cpu_online(n)) 47 return 0; 48 #endif 49 50 /* 51 * For the first processor also print the system type 52 */ 53 if (n == 0) { 54 seq_printf(m, "system type\t\t: %s\n", get_system_type()); 55 if (mips_get_machine_name()) 56 seq_printf(m, "machine\t\t\t: %s\n", 57 mips_get_machine_name()); 58 } 59 60 seq_printf(m, "processor\t\t: %ld\n", n); 61 sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n", 62 cpu_data[n].options & MIPS_CPU_FPU ? " FPU V%d.%d" : ""); 63 seq_printf(m, fmt, __cpu_name[n], 64 (version >> 4) & 0x0f, version & 0x0f, 65 (fp_vers >> 4) & 0x0f, fp_vers & 0x0f); 66 seq_printf(m, "BogoMIPS\t\t: %u.%02u\n", 67 cpu_data[n].udelay_val / (500000/HZ), 68 (cpu_data[n].udelay_val / (5000/HZ)) % 100); 69 seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no"); 70 seq_printf(m, "microsecond timers\t: %s\n", 71 cpu_has_counter ? "yes" : "no"); 72 seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize); 73 seq_printf(m, "extra interrupt vector\t: %s\n", 74 cpu_has_divec ? "yes" : "no"); 75 seq_printf(m, "hardware watchpoint\t: %s", 76 cpu_has_watch ? "yes, " : "no\n"); 77 if (cpu_has_watch) { 78 seq_printf(m, "count: %d, address/irw mask: [", 79 cpu_data[n].watch_reg_count); 80 for (i = 0; i < cpu_data[n].watch_reg_count; i++) 81 seq_printf(m, "%s0x%04x", i ? ", " : "", 82 cpu_data[n].watch_reg_masks[i]); 83 seq_puts(m, "]\n"); 84 } 85 86 seq_puts(m, "isa\t\t\t:"); 87 if (cpu_has_mips_1) 88 seq_puts(m, " mips1"); 89 if (cpu_has_mips_2) 90 seq_puts(m, " mips2"); 91 if (cpu_has_mips_3) 92 seq_puts(m, " mips3"); 93 if (cpu_has_mips_4) 94 seq_puts(m, " mips4"); 95 if (cpu_has_mips_5) 96 seq_puts(m, " mips5"); 97 if (cpu_has_mips32r1) 98 seq_puts(m, " mips32r1"); 99 if (cpu_has_mips32r2) 100 seq_puts(m, " mips32r2"); 101 if (cpu_has_mips32r5) 102 seq_puts(m, " mips32r5"); 103 if (cpu_has_mips32r6) 104 seq_puts(m, " mips32r6"); 105 if (cpu_has_mips64r1) 106 seq_puts(m, " mips64r1"); 107 if (cpu_has_mips64r2) 108 seq_puts(m, " mips64r2"); 109 if (cpu_has_mips64r5) 110 seq_puts(m, " mips64r5"); 111 if (cpu_has_mips64r6) 112 seq_puts(m, " mips64r6"); 113 seq_puts(m, "\n"); 114 115 seq_puts(m, "ASEs implemented\t:"); 116 if (cpu_has_mips16) 117 seq_puts(m, " mips16"); 118 if (cpu_has_mips16e2) 119 seq_puts(m, " mips16e2"); 120 if (cpu_has_mdmx) 121 seq_puts(m, " mdmx"); 122 if (cpu_has_mips3d) 123 seq_puts(m, " mips3d"); 124 if (cpu_has_smartmips) 125 seq_puts(m, " smartmips"); 126 if (cpu_has_dsp) 127 seq_puts(m, " dsp"); 128 if (cpu_has_dsp2) 129 seq_puts(m, " dsp2"); 130 if (cpu_has_dsp3) 131 seq_puts(m, " dsp3"); 132 if (cpu_has_mipsmt) 133 seq_puts(m, " mt"); 134 if (cpu_has_mmips) 135 seq_puts(m, " micromips"); 136 if (cpu_has_vz) 137 seq_puts(m, " vz"); 138 if (cpu_has_msa) 139 seq_puts(m, " msa"); 140 if (cpu_has_eva) 141 seq_puts(m, " eva"); 142 if (cpu_has_htw) 143 seq_puts(m, " htw"); 144 if (cpu_has_xpa) 145 seq_puts(m, " xpa"); 146 if (cpu_has_loongson_mmi) 147 seq_puts(m, " loongson-mmi"); 148 if (cpu_has_loongson_cam) 149 seq_puts(m, " loongson-cam"); 150 if (cpu_has_loongson_ext) 151 seq_puts(m, " loongson-ext"); 152 if (cpu_has_loongson_ext2) 153 seq_puts(m, " loongson-ext2"); 154 seq_puts(m, "\n"); 155 156 if (cpu_has_mmips) { 157 seq_printf(m, "micromips kernel\t: %s\n", 158 (read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no"); 159 } 160 161 seq_puts(m, "Options implemented\t:"); 162 if (cpu_has_tlb) 163 seq_puts(m, " tlb"); 164 if (cpu_has_ftlb) 165 seq_puts(m, " ftlb"); 166 if (cpu_has_tlbinv) 167 seq_puts(m, " tlbinv"); 168 if (cpu_has_segments) 169 seq_puts(m, " segments"); 170 if (cpu_has_rixiex) 171 seq_puts(m, " rixiex"); 172 if (cpu_has_ldpte) 173 seq_puts(m, " ldpte"); 174 if (cpu_has_maar) 175 seq_puts(m, " maar"); 176 if (cpu_has_rw_llb) 177 seq_puts(m, " rw_llb"); 178 if (cpu_has_4kex) 179 seq_puts(m, " 4kex"); 180 if (cpu_has_3k_cache) 181 seq_puts(m, " 3k_cache"); 182 if (cpu_has_4k_cache) 183 seq_puts(m, " 4k_cache"); 184 if (cpu_has_tx39_cache) 185 seq_puts(m, " tx39_cache"); 186 if (cpu_has_octeon_cache) 187 seq_puts(m, " octeon_cache"); 188 if (cpu_has_fpu) 189 seq_puts(m, " fpu"); 190 if (cpu_has_32fpr) 191 seq_puts(m, " 32fpr"); 192 if (cpu_has_cache_cdex_p) 193 seq_puts(m, " cache_cdex_p"); 194 if (cpu_has_cache_cdex_s) 195 seq_puts(m, " cache_cdex_s"); 196 if (cpu_has_prefetch) 197 seq_puts(m, " prefetch"); 198 if (cpu_has_mcheck) 199 seq_puts(m, " mcheck"); 200 if (cpu_has_ejtag) 201 seq_puts(m, " ejtag"); 202 if (cpu_has_llsc) 203 seq_puts(m, " llsc"); 204 if (cpu_has_guestctl0ext) 205 seq_puts(m, " guestctl0ext"); 206 if (cpu_has_guestctl1) 207 seq_puts(m, " guestctl1"); 208 if (cpu_has_guestctl2) 209 seq_puts(m, " guestctl2"); 210 if (cpu_has_guestid) 211 seq_puts(m, " guestid"); 212 if (cpu_has_drg) 213 seq_puts(m, " drg"); 214 if (cpu_has_rixi) 215 seq_puts(m, " rixi"); 216 if (cpu_has_lpa) 217 seq_puts(m, " lpa"); 218 if (cpu_has_mvh) 219 seq_puts(m, " mvh"); 220 if (cpu_has_vtag_icache) 221 seq_puts(m, " vtag_icache"); 222 if (cpu_has_dc_aliases) 223 seq_puts(m, " dc_aliases"); 224 if (cpu_has_ic_fills_f_dc) 225 seq_puts(m, " ic_fills_f_dc"); 226 if (cpu_has_pindexed_dcache) 227 seq_puts(m, " pindexed_dcache"); 228 if (cpu_has_userlocal) 229 seq_puts(m, " userlocal"); 230 if (cpu_has_nofpuex) 231 seq_puts(m, " nofpuex"); 232 if (cpu_has_vint) 233 seq_puts(m, " vint"); 234 if (cpu_has_veic) 235 seq_puts(m, " veic"); 236 if (cpu_has_inclusive_pcaches) 237 seq_puts(m, " inclusive_pcaches"); 238 if (cpu_has_perf_cntr_intr_bit) 239 seq_puts(m, " perf_cntr_intr_bit"); 240 if (cpu_has_ufr) 241 seq_puts(m, " ufr"); 242 if (cpu_has_fre) 243 seq_puts(m, " fre"); 244 if (cpu_has_cdmm) 245 seq_puts(m, " cdmm"); 246 if (cpu_has_small_pages) 247 seq_puts(m, " small_pages"); 248 if (cpu_has_nan_legacy) 249 seq_puts(m, " nan_legacy"); 250 if (cpu_has_nan_2008) 251 seq_puts(m, " nan_2008"); 252 if (cpu_has_ebase_wg) 253 seq_puts(m, " ebase_wg"); 254 if (cpu_has_badinstr) 255 seq_puts(m, " badinstr"); 256 if (cpu_has_badinstrp) 257 seq_puts(m, " badinstrp"); 258 if (cpu_has_contextconfig) 259 seq_puts(m, " contextconfig"); 260 if (cpu_has_perf) 261 seq_puts(m, " perf"); 262 if (cpu_has_mac2008_only) 263 seq_puts(m, " mac2008_only"); 264 if (cpu_has_ftlbparex) 265 seq_puts(m, " ftlbparex"); 266 if (cpu_has_gsexcex) 267 seq_puts(m, " gsexcex"); 268 if (cpu_has_shared_ftlb_ram) 269 seq_puts(m, " shared_ftlb_ram"); 270 if (cpu_has_shared_ftlb_entries) 271 seq_puts(m, " shared_ftlb_entries"); 272 if (cpu_has_mipsmt_pertccounters) 273 seq_puts(m, " mipsmt_pertccounters"); 274 if (cpu_has_mmid) 275 seq_puts(m, " mmid"); 276 if (cpu_has_mm_sysad) 277 seq_puts(m, " mm_sysad"); 278 if (cpu_has_mm_full) 279 seq_puts(m, " mm_full"); 280 seq_puts(m, "\n"); 281 282 seq_printf(m, "shadow register sets\t: %d\n", 283 cpu_data[n].srsets); 284 seq_printf(m, "kscratch registers\t: %d\n", 285 hweight8(cpu_data[n].kscratch_mask)); 286 seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package); 287 seq_printf(m, "core\t\t\t: %d\n", cpu_core(&cpu_data[n])); 288 289 #if defined(CONFIG_MIPS_MT_SMP) || defined(CONFIG_CPU_MIPSR6) 290 if (cpu_has_mipsmt) 291 seq_printf(m, "VPE\t\t\t: %d\n", cpu_vpe_id(&cpu_data[n])); 292 else if (cpu_has_vp) 293 seq_printf(m, "VP\t\t\t: %d\n", cpu_vpe_id(&cpu_data[n])); 294 #endif 295 296 sprintf(fmt, "VCE%%c exceptions\t\t: %s\n", 297 cpu_has_vce ? "%u" : "not available"); 298 seq_printf(m, fmt, 'D', vced_count); 299 seq_printf(m, fmt, 'I', vcei_count); 300 301 proc_cpuinfo_notifier_args.m = m; 302 proc_cpuinfo_notifier_args.n = n; 303 304 raw_notifier_call_chain(&proc_cpuinfo_chain, 0, 305 &proc_cpuinfo_notifier_args); 306 307 seq_puts(m, "\n"); 308 309 return 0; 310 } 311 312 static void *c_start(struct seq_file *m, loff_t *pos) 313 { 314 unsigned long i = *pos; 315 316 return i < NR_CPUS ? (void *) (i + 1) : NULL; 317 } 318 319 static void *c_next(struct seq_file *m, void *v, loff_t *pos) 320 { 321 ++*pos; 322 return c_start(m, pos); 323 } 324 325 static void c_stop(struct seq_file *m, void *v) 326 { 327 } 328 329 const struct seq_operations cpuinfo_op = { 330 .start = c_start, 331 .next = c_next, 332 .stop = c_stop, 333 .show = show_cpuinfo, 334 }; 335