190 lines
5.6 KiB
C
190 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 1995, 1996, 2001 Ralf Baechle
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* Copyright (C) 2001, 2004 MIPS Technologies, Inc.
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* Copyright (C) 2004 Maciej W. Rozycki
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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/mipsregs.h>
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#include <asm/processor.h>
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#include <asm/prom.h>
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unsigned int vced_count, vcei_count;
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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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struct proc_cpuinfo_notifier_args proc_cpuinfo_notifier_args;
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unsigned long n = (unsigned long) v - 1;
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unsigned int version = cpu_data[n].processor_id;
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unsigned int fp_vers = cpu_data[n].fpu_id;
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char fmt [64];
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int i;
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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", get_system_type());
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if (mips_get_machine_name())
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seq_printf(m, "machine\t\t\t: %s\n",
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mips_get_machine_name());
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}
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seq_printf(m, "processor\t\t: %ld\n", n);
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sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",
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cpu_data[n].options & MIPS_CPU_FPU ? " FPU V%d.%d" : "");
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seq_printf(m, fmt, __cpu_name[n],
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(version >> 4) & 0x0f, version & 0x0f,
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(fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
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seq_printf(m, "BogoMIPS\t\t: %u.%02u\n",
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cpu_data[n].udelay_val / (500000/HZ),
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(cpu_data[n].udelay_val / (5000/HZ)) % 100);
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seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
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seq_printf(m, "microsecond timers\t: %s\n",
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cpu_has_counter ? "yes" : "no");
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seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize);
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seq_printf(m, "extra interrupt vector\t: %s\n",
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cpu_has_divec ? "yes" : "no");
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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, "count: %d, address/irw mask: [",
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cpu_data[n].watch_reg_count);
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for (i = 0; i < cpu_data[n].watch_reg_count; i++)
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seq_printf(m, "%s0x%04x", i ? ", " : "" ,
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cpu_data[n].watch_reg_masks[i]);
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seq_printf(m, "]\n");
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}
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seq_printf(m, "isa\t\t\t:");
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if (cpu_has_mips_1)
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seq_printf(m, " mips1");
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if (cpu_has_mips_2)
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seq_printf(m, "%s", " mips2");
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if (cpu_has_mips_3)
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seq_printf(m, "%s", " mips3");
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if (cpu_has_mips_4)
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seq_printf(m, "%s", " mips4");
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if (cpu_has_mips_5)
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seq_printf(m, "%s", " mips5");
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if (cpu_has_mips32r1)
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seq_printf(m, "%s", " mips32r1");
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if (cpu_has_mips32r2)
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seq_printf(m, "%s", " mips32r2");
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if (cpu_has_mips32r6)
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seq_printf(m, "%s", " mips32r6");
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if (cpu_has_mips64r1)
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seq_printf(m, "%s", " mips64r1");
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if (cpu_has_mips64r2)
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seq_printf(m, "%s", " mips64r2");
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if (cpu_has_mips64r6)
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seq_printf(m, "%s", " mips64r6");
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seq_printf(m, "\n");
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seq_printf(m, "ASEs implemented\t:");
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if (cpu_has_mips16) seq_printf(m, "%s", " mips16");
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if (cpu_has_mips16e2) seq_printf(m, "%s", " mips16e2");
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if (cpu_has_mdmx) seq_printf(m, "%s", " mdmx");
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if (cpu_has_mips3d) seq_printf(m, "%s", " mips3d");
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if (cpu_has_smartmips) seq_printf(m, "%s", " smartmips");
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if (cpu_has_dsp) seq_printf(m, "%s", " dsp");
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if (cpu_has_dsp2) seq_printf(m, "%s", " dsp2");
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if (cpu_has_dsp3) seq_printf(m, "%s", " dsp3");
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if (cpu_has_mipsmt) seq_printf(m, "%s", " mt");
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if (cpu_has_mmips) seq_printf(m, "%s", " micromips");
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if (cpu_has_vz) seq_printf(m, "%s", " vz");
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if (cpu_has_msa) seq_printf(m, "%s", " msa");
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if (cpu_has_eva) seq_printf(m, "%s", " eva");
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if (cpu_has_htw) seq_printf(m, "%s", " htw");
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if (cpu_has_xpa) seq_printf(m, "%s", " xpa");
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if (cpu_has_loongson_mmi) seq_printf(m, "%s", " loongson-mmi");
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if (cpu_has_loongson_cam) seq_printf(m, "%s", " loongson-cam");
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if (cpu_has_loongson_ext) seq_printf(m, "%s", " loongson-ext");
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if (cpu_has_loongson_ext2) seq_printf(m, "%s", " loongson-ext2");
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seq_printf(m, "\n");
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if (cpu_has_mmips) {
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seq_printf(m, "micromips kernel\t: %s\n",
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(read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no");
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}
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seq_printf(m, "shadow register sets\t: %d\n",
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cpu_data[n].srsets);
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seq_printf(m, "kscratch registers\t: %d\n",
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hweight8(cpu_data[n].kscratch_mask));
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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_core(&cpu_data[n]));
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#if defined(CONFIG_MIPS_MT_SMP) || defined(CONFIG_CPU_MIPSR6)
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if (cpu_has_mipsmt)
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seq_printf(m, "VPE\t\t\t: %d\n", cpu_vpe_id(&cpu_data[n]));
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else if (cpu_has_vp)
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seq_printf(m, "VP\t\t\t: %d\n", cpu_vpe_id(&cpu_data[n]));
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#endif
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sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
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cpu_has_vce ? "%u" : "not available");
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seq_printf(m, fmt, 'D', vced_count);
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seq_printf(m, fmt, 'I', vcei_count);
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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_CPUS ? (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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