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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#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/processor.h>
#include <asm/time.h>
/*
* 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)
{
unsigned long n = (unsigned long) v - 1;
unsigned int isa = cpu_data[n].isa_level;
unsigned int version = cpu_data[n].processor_id & 0xff;
unsigned int fp_version = cpu_data[n].fpu_vers;
struct proc_cpuinfo_notifier_args proc_cpuinfo_notifier_args;
#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\n", get_system_type());
seq_printf(m, "processor\t\t: %ld\n", n);
seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package);
seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
seq_printf(m, "global_id\t\t: %d\n", cpu_data[n].global_id);
seq_printf(m, "CPU Family\t\t: %s\n", __cpu_family[n]);
seq_printf(m, "Model Name\t\t: %s\n", __cpu_full_name[n]);
seq_printf(m, "CPU Revision\t\t: 0x%02x\n", version);
seq_printf(m, "FPU Revision\t\t: 0x%02x\n", fp_version);
seq_printf(m, "CPU MHz\t\t\t: %llu.%02llu\n",
cpu_clock_freq / 1000000, (cpu_clock_freq / 10000) % 100);
seq_printf(m, "BogoMIPS\t\t: %llu.%02llu\n",
(lpj_fine * cpu_clock_freq / const_clock_freq) / (500000/HZ),
((lpj_fine * cpu_clock_freq / const_clock_freq) / (5000/HZ)) % 100);
seq_printf(m, "TLB Entries\t\t: %d\n", cpu_data[n].tlbsize);
seq_printf(m, "Address Sizes\t\t: %d bits physical, %d bits virtual\n",
cpu_pabits + 1, cpu_vabits + 1);
seq_printf(m, "ISA\t\t\t:");
if (isa & LOONGARCH_CPU_ISA_LA32R)
seq_printf(m, " loongarch32r");
if (isa & LOONGARCH_CPU_ISA_LA32S)
seq_printf(m, " loongarch32s");
if (isa & LOONGARCH_CPU_ISA_LA64)
seq_printf(m, " loongarch64");
seq_printf(m, "\n");
seq_printf(m, "Features\t\t:");
if (cpu_has_cpucfg) seq_printf(m, " cpucfg");
if (cpu_has_lam) seq_printf(m, " lam");
if (cpu_has_ual) seq_printf(m, " ual");
if (cpu_has_fpu) seq_printf(m, " fpu");
if (cpu_has_lsx) seq_printf(m, " lsx");
if (cpu_has_lasx) seq_printf(m, " lasx");
if (cpu_has_crc32) seq_printf(m, " crc32");
if (cpu_has_complex) seq_printf(m, " complex");
if (cpu_has_crypto) seq_printf(m, " crypto");
if (cpu_has_ptw) seq_printf(m, " ptw");
if (cpu_has_lspw) seq_printf(m, " lspw");
if (cpu_has_lvz) seq_printf(m, " lvz");
if (cpu_has_lbt_x86) seq_printf(m, " lbt_x86");
if (cpu_has_lbt_arm) seq_printf(m, " lbt_arm");
if (cpu_has_lbt_mips) seq_printf(m, " lbt_mips");
seq_printf(m, "\n");
seq_printf(m, "Hardware Watchpoint\t: %s",
cpu_has_watch ? "yes, " : "no\n");
if (cpu_has_watch) {
seq_printf(m, "iwatch count: %d, dwatch count: %d\n",
cpu_data[n].watch_ireg_count, cpu_data[n].watch_dreg_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_printf(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,
};
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