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// 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_printf(m, "]\n");
}
seq_printf(m, "isa\t\t\t:");
if (cpu_has_mips_1)
seq_printf(m, " mips1");
if (cpu_has_mips_2)
seq_printf(m, "%s", " mips2");
if (cpu_has_mips_3)
seq_printf(m, "%s", " mips3");
if (cpu_has_mips_4)
seq_printf(m, "%s", " mips4");
if (cpu_has_mips_5)
seq_printf(m, "%s", " mips5");
if (cpu_has_mips32r1)
seq_printf(m, "%s", " mips32r1");
if (cpu_has_mips32r2)
seq_printf(m, "%s", " mips32r2");
if (cpu_has_mips32r6)
seq_printf(m, "%s", " mips32r6");
if (cpu_has_mips64r1)
seq_printf(m, "%s", " mips64r1");
if (cpu_has_mips64r2)
seq_printf(m, "%s", " mips64r2");
if (cpu_has_mips64r6)
seq_printf(m, "%s", " mips64r6");
seq_printf(m, "\n");
seq_printf(m, "ASEs implemented\t:");
if (cpu_has_mips16) seq_printf(m, "%s", " mips16");
if (cpu_has_mips16e2) seq_printf(m, "%s", " mips16e2");
if (cpu_has_mdmx) seq_printf(m, "%s", " mdmx");
if (cpu_has_mips3d) seq_printf(m, "%s", " mips3d");
if (cpu_has_smartmips) seq_printf(m, "%s", " smartmips");
if (cpu_has_dsp) seq_printf(m, "%s", " dsp");
if (cpu_has_dsp2) seq_printf(m, "%s", " dsp2");
if (cpu_has_dsp3) seq_printf(m, "%s", " dsp3");
if (cpu_has_mipsmt) seq_printf(m, "%s", " mt");
if (cpu_has_mmips) seq_printf(m, "%s", " micromips");
if (cpu_has_vz) seq_printf(m, "%s", " vz");
if (cpu_has_msa) seq_printf(m, "%s", " msa");
if (cpu_has_eva) seq_printf(m, "%s", " eva");
if (cpu_has_htw) seq_printf(m, "%s", " htw");
if (cpu_has_xpa) seq_printf(m, "%s", " xpa");
if (cpu_has_loongson_mmi) seq_printf(m, "%s", " loongson-mmi");
if (cpu_has_loongson_cam) seq_printf(m, "%s", " loongson-cam");
if (cpu_has_loongson_ext) seq_printf(m, "%s", " loongson-ext");
if (cpu_has_loongson_ext2) seq_printf(m, "%s", " loongson-ext2");
seq_printf(m, "\n");
if (cpu_has_mmips) {
seq_printf(m, "micromips kernel\t: %s\n",
(read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no");
}
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_printf(m, "\n");
return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
{
unsigned long i = *pos;
return i < NR_CPUS ? (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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