129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/seq_file.h>
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#include <asm/bootinfo.h>
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#include <asm/cpu.h>
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#include <asm/cpu-features.h>
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#include <asm/idle.h>
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#include <asm/processor.h>
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#include <asm/time.h>
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/*
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* No lock; only written during early bootup by CPU 0.
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*/
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static RAW_NOTIFIER_HEAD(proc_cpuinfo_chain);
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int __ref register_proc_cpuinfo_notifier(struct notifier_block *nb)
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{
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return raw_notifier_chain_register(&proc_cpuinfo_chain, nb);
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}
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int proc_cpuinfo_notifier_call_chain(unsigned long val, void *v)
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{
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return raw_notifier_call_chain(&proc_cpuinfo_chain, val, v);
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}
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static int show_cpuinfo(struct seq_file *m, void *v)
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{
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unsigned long n = (unsigned long) v - 1;
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unsigned int version = cpu_data[n].processor_id & 0xff;
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unsigned int fp_version = cpu_data[n].fpu_vers;
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struct proc_cpuinfo_notifier_args proc_cpuinfo_notifier_args;
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#ifdef CONFIG_SMP
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if (!cpu_online(n))
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return 0;
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#endif
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/*
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* For the first processor also print the system type
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*/
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if (n == 0)
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seq_printf(m, "system type\t\t: %s\n\n", get_system_type());
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seq_printf(m, "processor\t\t: %ld\n", n);
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seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package);
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seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
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seq_printf(m, "CPU Family\t\t: %s\n", __cpu_family[n]);
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seq_printf(m, "Model Name\t\t: %s\n", __cpu_full_name[n]);
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seq_printf(m, "CPU Revision\t\t: 0x%02x\n", version);
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seq_printf(m, "FPU Revision\t\t: 0x%02x\n", fp_version);
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seq_printf(m, "CPU MHz\t\t\t: %llu.%02llu\n",
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cpu_clock_freq / 1000000, (cpu_clock_freq / 10000) % 100);
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seq_printf(m, "BogoMIPS\t\t: %llu.%02llu\n",
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(lpj_fine * cpu_clock_freq / const_clock_freq) / (500000/HZ),
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((lpj_fine * cpu_clock_freq / const_clock_freq) / (5000/HZ)) % 100);
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seq_printf(m, "TLB Entries\t\t: %d\n", cpu_data[n].tlbsize);
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seq_printf(m, "Address Sizes\t\t: %d bits physical, %d bits virtual\n",
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cpu_pabits + 1, cpu_vabits + 1);
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seq_printf(m, "ISA\t\t\t:");
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if (cpu_has_loongarch32)
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seq_printf(m, " loongarch32");
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if (cpu_has_loongarch64)
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seq_printf(m, " loongarch64");
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seq_printf(m, "\n");
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seq_printf(m, "Features\t\t:");
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if (cpu_has_cpucfg) seq_printf(m, " cpucfg");
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if (cpu_has_lam) seq_printf(m, " lam");
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if (cpu_has_ual) seq_printf(m, " ual");
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if (cpu_has_fpu) seq_printf(m, " fpu");
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if (cpu_has_lsx) seq_printf(m, " lsx");
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if (cpu_has_lasx) seq_printf(m, " lasx");
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if (cpu_has_crc32) seq_printf(m, " crc32");
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if (cpu_has_complex) seq_printf(m, " complex");
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if (cpu_has_crypto) seq_printf(m, " crypto");
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if (cpu_has_lvz) seq_printf(m, " lvz");
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if (cpu_has_lbt_x86) seq_printf(m, " lbt_x86");
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if (cpu_has_lbt_arm) seq_printf(m, " lbt_arm");
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if (cpu_has_lbt_mips) seq_printf(m, " lbt_mips");
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seq_printf(m, "\n");
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seq_printf(m, "Hardware Watchpoint\t: %s",
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cpu_has_watch ? "yes, " : "no\n");
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if (cpu_has_watch) {
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seq_printf(m, "iwatch count: %d, dwatch count: %d\n",
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cpu_data[n].watch_ireg_count, cpu_data[n].watch_dreg_count);
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}
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proc_cpuinfo_notifier_args.m = m;
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proc_cpuinfo_notifier_args.n = n;
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raw_notifier_call_chain(&proc_cpuinfo_chain, 0,
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&proc_cpuinfo_notifier_args);
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seq_printf(m, "\n");
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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unsigned long i = *pos;
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return i < nr_cpu_ids ? (void *)(i + 1) : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo,
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};
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