proc.c

  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
  4 */
  5#include <linux/delay.h>
  6#include <linux/kernel.h>
  7#include <linux/sched.h>
  8#include <linux/seq_file.h>
  9#include <asm/bootinfo.h>
 10#include <asm/cpu.h>
 11#include <asm/cpu-features.h>
 12#include <asm/idle.h>
 13#include <asm/processor.h>
 14#include <asm/time.h>
 15
 16static int show_cpuinfo(struct seq_file *m, void *v)
 17{
 18	unsigned long n = (unsigned long) v - 1;
 19	unsigned int isa = cpu_data[n].isa_level;
 20	unsigned int prid = cpu_data[n].processor_id;
 21	unsigned int version = cpu_data[n].processor_id & 0xff;
 22	unsigned int fp_version = cpu_data[n].fpu_vers;
 23	u64 freq = cpu_clock_freq, bogomips = lpj_fine * cpu_clock_freq;
 24
 25#ifdef CONFIG_SMP
 26	if (!cpu_online(n))
 27		return 0;
 28#endif
 29	do_div(freq, 10000);
 30	do_div(bogomips, const_clock_freq * (5000/HZ));
 31
 32	/*
 33	 * For the first processor also print the system type
 34	 */
 35	if (n == 0)
 36		seq_printf(m, "system type\t\t: %s\n\n", get_system_type());
 37
 38	seq_printf(m, "processor\t\t: %ld\n", n);
 39	seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package);
 40	seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
 41	seq_printf(m, "global_id\t\t: %d\n", cpu_data[n].global_id);
 42	seq_printf(m, "CPU Family\t\t: %s\n", __cpu_family[n]);
 43	seq_printf(m, "Model Name\t\t: %s\n", __cpu_full_name[n]);
 44	seq_printf(m, "PRID\t\t\t: %s (%08x)\n", id_to_core_name(prid), prid);
 45	seq_printf(m, "CPU Revision\t\t: 0x%02x\n", version);
 46	seq_printf(m, "FPU Revision\t\t: 0x%02x\n", fp_version);
 47	seq_printf(m, "CPU MHz\t\t\t: %u.%02u\n", (u32)freq / 100, (u32)freq % 100);
 48	seq_printf(m, "BogoMIPS\t\t: %u.%02u\n", (u32)bogomips / 100, (u32)bogomips % 100);
 49	seq_printf(m, "TLB Entries\t\t: %d\n", cpu_data[n].tlbsize);
 50	seq_printf(m, "Address Sizes\t\t: %d bits physical, %d bits virtual\n",
 51		      cpu_pabits + 1, cpu_vabits + 1);
 52
 53	seq_printf(m, "ISA\t\t\t:");
 54	if (isa & LOONGARCH_CPU_ISA_LA32R)
 55		seq_printf(m, " loongarch32r");
 56	if (isa & LOONGARCH_CPU_ISA_LA32S)
 57		seq_printf(m, " loongarch32s");
 58	if (isa & LOONGARCH_CPU_ISA_LA64)
 59		seq_printf(m, " loongarch64");
 60	seq_printf(m, "\n");
 61
 62	seq_printf(m, "Features\t\t:");
 63	if (cpu_has_cpucfg)	seq_printf(m, " cpucfg");
 64	if (cpu_has_lam)	seq_printf(m, " lam");
 65	if (cpu_has_ual)	seq_printf(m, " ual");
 66	if (cpu_has_fpu)	seq_printf(m, " fpu");
 67	if (cpu_has_lsx)	seq_printf(m, " lsx");
 68	if (cpu_has_lasx)	seq_printf(m, " lasx");
 69	if (cpu_has_crc32)	seq_printf(m, " crc32");
 70	if (cpu_has_complex)	seq_printf(m, " complex");
 71	if (cpu_has_crypto)	seq_printf(m, " crypto");
 72	if (cpu_has_ptw)	seq_printf(m, " ptw");
 73	if (cpu_has_lspw)	seq_printf(m, " lspw");
 74	if (cpu_has_lvz)	seq_printf(m, " lvz");
 75	if (cpu_has_lbt_x86)	seq_printf(m, " lbt_x86");
 76	if (cpu_has_lbt_arm)	seq_printf(m, " lbt_arm");
 77	if (cpu_has_lbt_mips)	seq_printf(m, " lbt_mips");
 78	seq_printf(m, "\n");
 79
 80	seq_printf(m, "Hardware Watchpoint\t: %s", str_yes_no(cpu_has_watch));
 81	if (cpu_has_watch) {
 82		seq_printf(m, ", iwatch count: %d, dwatch count: %d",
 83		      cpu_data[n].watch_ireg_count, cpu_data[n].watch_dreg_count);
 84	}
 85
 86	seq_printf(m, "\n\n");
 87
 88	return 0;
 89}
 90
 91static void *c_start(struct seq_file *m, loff_t *pos)
 92{
 93	unsigned long i = *pos;
 94
 95	return i < nr_cpu_ids ? (void *)(i + 1) : NULL;
 96}
 97
 98static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 99{
100	++*pos;
101	return c_start(m, pos);
102}
103
104static void c_stop(struct seq_file *m, void *v)
105{
106}
107
108const struct seq_operations cpuinfo_op = {
109	.start	= c_start,
110	.next	= c_next,
111	.stop	= c_stop,
112	.show	= show_cpuinfo,
113};