| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 1995, 1996, 2001 Ralf Baechle |
| * Copyright (C) 2001, 2004 MIPS Technologies, Inc. |
| * Copyright (C) 2004 Maciej W. Rozycki |
| */ |
| #include <linux/delay.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/seq_file.h> |
| #include <asm/bootinfo.h> |
| #include <asm/cpu.h> |
| #include <asm/cpu-features.h> |
| #include <asm/idle.h> |
| #include <asm/mipsregs.h> |
| #include <asm/processor.h> |
| #include <asm/prom.h> |
| |
| unsigned int vced_count, vcei_count; |
| |
| /* |
| * No lock; only written during early bootup by CPU 0. |
| */ |
| static RAW_NOTIFIER_HEAD(proc_cpuinfo_chain); |
| |
| int __ref register_proc_cpuinfo_notifier(struct notifier_block *nb) |
| { |
| return raw_notifier_chain_register(&proc_cpuinfo_chain, nb); |
| } |
| |
| int proc_cpuinfo_notifier_call_chain(unsigned long val, void *v) |
| { |
| return raw_notifier_call_chain(&proc_cpuinfo_chain, val, v); |
| } |
| |
| static int show_cpuinfo(struct seq_file *m, void *v) |
| { |
| struct proc_cpuinfo_notifier_args proc_cpuinfo_notifier_args; |
| unsigned long n = (unsigned long) v - 1; |
| unsigned int version = cpu_data[n].processor_id; |
| unsigned int fp_vers = cpu_data[n].fpu_id; |
| char fmt[64]; |
| int i; |
| |
| #ifdef CONFIG_SMP |
| if (!cpu_online(n)) |
| return 0; |
| #endif |
| |
| /* |
| * For the first processor also print the system type |
| */ |
| if (n == 0) { |
| seq_printf(m, "system type\t\t: %s\n", get_system_type()); |
| if (mips_get_machine_name()) |
| seq_printf(m, "machine\t\t\t: %s\n", |
| mips_get_machine_name()); |
| } |
| |
| seq_printf(m, "processor\t\t: %ld\n", n); |
| sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n", |
| cpu_data[n].options & MIPS_CPU_FPU ? " FPU V%d.%d" : ""); |
| seq_printf(m, fmt, __cpu_name[n], |
| (version >> 4) & 0x0f, version & 0x0f, |
| (fp_vers >> 4) & 0x0f, fp_vers & 0x0f); |
| seq_printf(m, "BogoMIPS\t\t: %u.%02u\n", |
| cpu_data[n].udelay_val / (500000/HZ), |
| (cpu_data[n].udelay_val / (5000/HZ)) % 100); |
| seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no"); |
| seq_printf(m, "microsecond timers\t: %s\n", |
| cpu_has_counter ? "yes" : "no"); |
| seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize); |
| seq_printf(m, "extra interrupt vector\t: %s\n", |
| cpu_has_divec ? "yes" : "no"); |
| seq_printf(m, "hardware watchpoint\t: %s", |
| cpu_has_watch ? "yes, " : "no\n"); |
| if (cpu_has_watch) { |
| seq_printf(m, "count: %d, address/irw mask: [", |
| cpu_data[n].watch_reg_count); |
| for (i = 0; i < cpu_data[n].watch_reg_count; i++) |
| seq_printf(m, "%s0x%04x", i ? ", " : "", |
| cpu_data[n].watch_reg_masks[i]); |
| seq_puts(m, "]\n"); |
| } |
| |
| seq_puts(m, "isa\t\t\t:"); |
| if (cpu_has_mips_1) |
| seq_puts(m, " mips1"); |
| if (cpu_has_mips_2) |
| seq_puts(m, " mips2"); |
| if (cpu_has_mips_3) |
| seq_puts(m, " mips3"); |
| if (cpu_has_mips_4) |
| seq_puts(m, " mips4"); |
| if (cpu_has_mips_5) |
| seq_puts(m, " mips5"); |
| if (cpu_has_mips32r1) |
| seq_puts(m, " mips32r1"); |
| if (cpu_has_mips32r2) |
| seq_puts(m, " mips32r2"); |
| if (cpu_has_mips32r5) |
| seq_puts(m, " mips32r5"); |
| if (cpu_has_mips32r6) |
| seq_puts(m, " mips32r6"); |
| if (cpu_has_mips64r1) |
| seq_puts(m, " mips64r1"); |
| if (cpu_has_mips64r2) |
| seq_puts(m, " mips64r2"); |
| if (cpu_has_mips64r5) |
| seq_puts(m, " mips64r5"); |
| if (cpu_has_mips64r6) |
| seq_puts(m, " mips64r6"); |
| seq_puts(m, "\n"); |
| |
| seq_puts(m, "ASEs implemented\t:"); |
| if (cpu_has_mips16) |
| seq_puts(m, " mips16"); |
| if (cpu_has_mips16e2) |
| seq_puts(m, " mips16e2"); |
| if (cpu_has_mdmx) |
| seq_puts(m, " mdmx"); |
| if (cpu_has_mips3d) |
| seq_puts(m, " mips3d"); |
| if (cpu_has_smartmips) |
| seq_puts(m, " smartmips"); |
| if (cpu_has_dsp) |
| seq_puts(m, " dsp"); |
| if (cpu_has_dsp2) |
| seq_puts(m, " dsp2"); |
| if (cpu_has_dsp3) |
| seq_puts(m, " dsp3"); |
| if (cpu_has_mipsmt) |
| seq_puts(m, " mt"); |
| if (cpu_has_mmips) |
| seq_puts(m, " micromips"); |
| if (cpu_has_vz) |
| seq_puts(m, " vz"); |
| if (cpu_has_msa) |
| seq_puts(m, " msa"); |
| if (cpu_has_eva) |
| seq_puts(m, " eva"); |
| if (cpu_has_htw) |
| seq_puts(m, " htw"); |
| if (cpu_has_xpa) |
| seq_puts(m, " xpa"); |
| if (cpu_has_loongson_mmi) |
| seq_puts(m, " loongson-mmi"); |
| if (cpu_has_loongson_cam) |
| seq_puts(m, " loongson-cam"); |
| if (cpu_has_loongson_ext) |
| seq_puts(m, " loongson-ext"); |
| if (cpu_has_loongson_ext2) |
| seq_puts(m, " loongson-ext2"); |
| seq_puts(m, "\n"); |
| |
| if (cpu_has_mmips) { |
| seq_printf(m, "micromips kernel\t: %s\n", |
| (read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no"); |
| } |
| |
| seq_puts(m, "Options implemented\t:"); |
| if (cpu_has_tlb) |
| seq_puts(m, " tlb"); |
| if (cpu_has_ftlb) |
| seq_puts(m, " ftlb"); |
| if (cpu_has_tlbinv) |
| seq_puts(m, " tlbinv"); |
| if (cpu_has_segments) |
| seq_puts(m, " segments"); |
| if (cpu_has_rixiex) |
| seq_puts(m, " rixiex"); |
| if (cpu_has_ldpte) |
| seq_puts(m, " ldpte"); |
| if (cpu_has_maar) |
| seq_puts(m, " maar"); |
| if (cpu_has_rw_llb) |
| seq_puts(m, " rw_llb"); |
| if (cpu_has_4kex) |
| seq_puts(m, " 4kex"); |
| if (cpu_has_3k_cache) |
| seq_puts(m, " 3k_cache"); |
| if (cpu_has_4k_cache) |
| seq_puts(m, " 4k_cache"); |
| if (cpu_has_octeon_cache) |
| seq_puts(m, " octeon_cache"); |
| if (raw_cpu_has_fpu) |
| seq_puts(m, " fpu"); |
| if (cpu_has_32fpr) |
| seq_puts(m, " 32fpr"); |
| if (cpu_has_cache_cdex_p) |
| seq_puts(m, " cache_cdex_p"); |
| if (cpu_has_cache_cdex_s) |
| seq_puts(m, " cache_cdex_s"); |
| if (cpu_has_prefetch) |
| seq_puts(m, " prefetch"); |
| if (cpu_has_mcheck) |
| seq_puts(m, " mcheck"); |
| if (cpu_has_ejtag) |
| seq_puts(m, " ejtag"); |
| if (cpu_has_llsc) |
| seq_puts(m, " llsc"); |
| if (cpu_has_guestctl0ext) |
| seq_puts(m, " guestctl0ext"); |
| if (cpu_has_guestctl1) |
| seq_puts(m, " guestctl1"); |
| if (cpu_has_guestctl2) |
| seq_puts(m, " guestctl2"); |
| if (cpu_has_guestid) |
| seq_puts(m, " guestid"); |
| if (cpu_has_drg) |
| seq_puts(m, " drg"); |
| if (cpu_has_rixi) |
| seq_puts(m, " rixi"); |
| if (cpu_has_lpa) |
| seq_puts(m, " lpa"); |
| if (cpu_has_mvh) |
| seq_puts(m, " mvh"); |
| if (cpu_has_vtag_icache) |
| seq_puts(m, " vtag_icache"); |
| if (cpu_has_dc_aliases) |
| seq_puts(m, " dc_aliases"); |
| if (cpu_has_ic_fills_f_dc) |
| seq_puts(m, " ic_fills_f_dc"); |
| if (cpu_has_pindexed_dcache) |
| seq_puts(m, " pindexed_dcache"); |
| if (cpu_has_userlocal) |
| seq_puts(m, " userlocal"); |
| if (cpu_has_nofpuex) |
| seq_puts(m, " nofpuex"); |
| if (cpu_has_vint) |
| seq_puts(m, " vint"); |
| if (cpu_has_veic) |
| seq_puts(m, " veic"); |
| if (cpu_has_inclusive_pcaches) |
| seq_puts(m, " inclusive_pcaches"); |
| if (cpu_has_perf_cntr_intr_bit) |
| seq_puts(m, " perf_cntr_intr_bit"); |
| if (cpu_has_ufr) |
| seq_puts(m, " ufr"); |
| if (cpu_has_fre) |
| seq_puts(m, " fre"); |
| if (cpu_has_cdmm) |
| seq_puts(m, " cdmm"); |
| if (cpu_has_small_pages) |
| seq_puts(m, " small_pages"); |
| if (cpu_has_nan_legacy) |
| seq_puts(m, " nan_legacy"); |
| if (cpu_has_nan_2008) |
| seq_puts(m, " nan_2008"); |
| if (cpu_has_ebase_wg) |
| seq_puts(m, " ebase_wg"); |
| if (cpu_has_badinstr) |
| seq_puts(m, " badinstr"); |
| if (cpu_has_badinstrp) |
| seq_puts(m, " badinstrp"); |
| if (cpu_has_contextconfig) |
| seq_puts(m, " contextconfig"); |
| if (cpu_has_perf) |
| seq_puts(m, " perf"); |
| if (cpu_has_mac2008_only) |
| seq_puts(m, " mac2008_only"); |
| if (cpu_has_ftlbparex) |
| seq_puts(m, " ftlbparex"); |
| if (cpu_has_gsexcex) |
| seq_puts(m, " gsexcex"); |
| if (cpu_has_shared_ftlb_ram) |
| seq_puts(m, " shared_ftlb_ram"); |
| if (cpu_has_shared_ftlb_entries) |
| seq_puts(m, " shared_ftlb_entries"); |
| if (cpu_has_mipsmt_pertccounters) |
| seq_puts(m, " mipsmt_pertccounters"); |
| if (cpu_has_mmid) |
| seq_puts(m, " mmid"); |
| if (cpu_has_mm_sysad) |
| seq_puts(m, " mm_sysad"); |
| if (cpu_has_mm_full) |
| seq_puts(m, " mm_full"); |
| seq_puts(m, "\n"); |
| |
| seq_printf(m, "shadow register sets\t: %d\n", |
| cpu_data[n].srsets); |
| seq_printf(m, "kscratch registers\t: %d\n", |
| hweight8(cpu_data[n].kscratch_mask)); |
| seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package); |
| seq_printf(m, "core\t\t\t: %d\n", cpu_core(&cpu_data[n])); |
| |
| #if defined(CONFIG_MIPS_MT_SMP) || defined(CONFIG_CPU_MIPSR6) |
| if (cpu_has_mipsmt) |
| seq_printf(m, "VPE\t\t\t: %d\n", cpu_vpe_id(&cpu_data[n])); |
| else if (cpu_has_vp) |
| seq_printf(m, "VP\t\t\t: %d\n", cpu_vpe_id(&cpu_data[n])); |
| #endif |
| |
| sprintf(fmt, "VCE%%c exceptions\t\t: %s\n", |
| cpu_has_vce ? "%u" : "not available"); |
| seq_printf(m, fmt, 'D', vced_count); |
| seq_printf(m, fmt, 'I', vcei_count); |
| |
| proc_cpuinfo_notifier_args.m = m; |
| proc_cpuinfo_notifier_args.n = n; |
| |
| raw_notifier_call_chain(&proc_cpuinfo_chain, 0, |
| &proc_cpuinfo_notifier_args); |
| |
| seq_puts(m, "\n"); |
| |
| return 0; |
| } |
| |
| static void *c_start(struct seq_file *m, loff_t *pos) |
| { |
| unsigned long i = *pos; |
| |
| return i < nr_cpu_ids ? (void *) (i + 1) : 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, |
| }; |
