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
show_cpuinfo(struct seq_file * m,void * v)16 static 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 version = cpu_data[n].processor_id & 0xff;
21 unsigned int fp_version = cpu_data[n].fpu_vers;
22
23 #ifdef CONFIG_SMP
24 if (!cpu_online(n))
25 return 0;
26 #endif
27
28 /*
29 * For the first processor also print the system type
30 */
31 if (n == 0)
32 seq_printf(m, "system type\t\t: %s\n\n", get_system_type());
33
34 seq_printf(m, "processor\t\t: %ld\n", n);
35 seq_printf(m, "package\t\t\t: %d\n", cpu_data[n].package);
36 seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
37 seq_printf(m, "global_id\t\t: %d\n", cpu_data[n].global_id);
38 seq_printf(m, "CPU Family\t\t: %s\n", __cpu_family[n]);
39 seq_printf(m, "Model Name\t\t: %s\n", __cpu_full_name[n]);
40 seq_printf(m, "CPU Revision\t\t: 0x%02x\n", version);
41 seq_printf(m, "FPU Revision\t\t: 0x%02x\n", fp_version);
42 seq_printf(m, "CPU MHz\t\t\t: %llu.%02llu\n",
43 cpu_clock_freq / 1000000, (cpu_clock_freq / 10000) % 100);
44 seq_printf(m, "BogoMIPS\t\t: %llu.%02llu\n",
45 (lpj_fine * cpu_clock_freq / const_clock_freq) / (500000/HZ),
46 ((lpj_fine * cpu_clock_freq / const_clock_freq) / (5000/HZ)) % 100);
47 seq_printf(m, "TLB Entries\t\t: %d\n", cpu_data[n].tlbsize);
48 seq_printf(m, "Address Sizes\t\t: %d bits physical, %d bits virtual\n",
49 cpu_pabits + 1, cpu_vabits + 1);
50
51 seq_printf(m, "ISA\t\t\t:");
52 if (isa & LOONGARCH_CPU_ISA_LA32R)
53 seq_printf(m, " loongarch32r");
54 if (isa & LOONGARCH_CPU_ISA_LA32S)
55 seq_printf(m, " loongarch32s");
56 if (isa & LOONGARCH_CPU_ISA_LA64)
57 seq_printf(m, " loongarch64");
58 seq_printf(m, "\n");
59
60 seq_printf(m, "Features\t\t:");
61 if (cpu_has_cpucfg) seq_printf(m, " cpucfg");
62 if (cpu_has_lam) seq_printf(m, " lam");
63 if (cpu_has_ual) seq_printf(m, " ual");
64 if (cpu_has_fpu) seq_printf(m, " fpu");
65 if (cpu_has_lsx) seq_printf(m, " lsx");
66 if (cpu_has_lasx) seq_printf(m, " lasx");
67 if (cpu_has_crc32) seq_printf(m, " crc32");
68 if (cpu_has_complex) seq_printf(m, " complex");
69 if (cpu_has_crypto) seq_printf(m, " crypto");
70 if (cpu_has_ptw) seq_printf(m, " ptw");
71 if (cpu_has_lspw) seq_printf(m, " lspw");
72 if (cpu_has_lvz) seq_printf(m, " lvz");
73 if (cpu_has_lbt_x86) seq_printf(m, " lbt_x86");
74 if (cpu_has_lbt_arm) seq_printf(m, " lbt_arm");
75 if (cpu_has_lbt_mips) seq_printf(m, " lbt_mips");
76 seq_printf(m, "\n");
77
78 seq_printf(m, "Hardware Watchpoint\t: %s", str_yes_no(cpu_has_watch));
79 if (cpu_has_watch) {
80 seq_printf(m, ", iwatch count: %d, dwatch count: %d",
81 cpu_data[n].watch_ireg_count, cpu_data[n].watch_dreg_count);
82 }
83
84 seq_printf(m, "\n\n");
85
86 return 0;
87 }
88
c_start(struct seq_file * m,loff_t * pos)89 static void *c_start(struct seq_file *m, loff_t *pos)
90 {
91 unsigned long i = *pos;
92
93 return i < nr_cpu_ids ? (void *)(i + 1) : NULL;
94 }
95
c_next(struct seq_file * m,void * v,loff_t * pos)96 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
97 {
98 ++*pos;
99 return c_start(m, pos);
100 }
101
c_stop(struct seq_file * m,void * v)102 static void c_stop(struct seq_file *m, void *v)
103 {
104 }
105
106 const struct seq_operations cpuinfo_op = {
107 .start = c_start,
108 .next = c_next,
109 .stop = c_stop,
110 .show = show_cpuinfo,
111 };
112