Linux Kernel  3.7.1
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proc.c
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1 /*
2  * Copyright (C) 1995, 1996, 2001 Ralf Baechle
3  * Copyright (C) 2001, 2004 MIPS Technologies, Inc.
4  * Copyright (C) 2004 Maciej W. Rozycki
5  */
6 #include <linux/delay.h>
7 #include <linux/kernel.h>
8 #include <linux/sched.h>
9 #include <linux/seq_file.h>
10 #include <asm/bootinfo.h>
11 #include <asm/cpu.h>
12 #include <asm/cpu-features.h>
13 #include <asm/mipsregs.h>
14 #include <asm/processor.h>
15 #include <asm/mips_machine.h>
16 
17 unsigned int vced_count, vcei_count;
18 
19 static int show_cpuinfo(struct seq_file *m, void *v)
20 {
21  unsigned long n = (unsigned long) v - 1;
22  unsigned int version = cpu_data[n].processor_id;
23  unsigned int fp_vers = cpu_data[n].fpu_id;
24  char fmt [64];
25  int i;
26 
27 #ifdef CONFIG_SMP
28  if (!cpu_online(n))
29  return 0;
30 #endif
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", get_system_type());
37  if (mips_get_machine_name())
38  seq_printf(m, "machine\t\t\t: %s\n",
39  mips_get_machine_name());
40  }
41 
42  seq_printf(m, "processor\t\t: %ld\n", n);
43  sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",
44  cpu_data[n].options & MIPS_CPU_FPU ? " FPU V%d.%d" : "");
45  seq_printf(m, fmt, __cpu_name[n],
46  (version >> 4) & 0x0f, version & 0x0f,
47  (fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
48  seq_printf(m, "BogoMIPS\t\t: %u.%02u\n",
49  cpu_data[n].udelay_val / (500000/HZ),
50  (cpu_data[n].udelay_val / (5000/HZ)) % 100);
51  seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
52  seq_printf(m, "microsecond timers\t: %s\n",
53  cpu_has_counter ? "yes" : "no");
54  seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize);
55  seq_printf(m, "extra interrupt vector\t: %s\n",
56  cpu_has_divec ? "yes" : "no");
57  seq_printf(m, "hardware watchpoint\t: %s",
58  cpu_has_watch ? "yes, " : "no\n");
59  if (cpu_has_watch) {
60  seq_printf(m, "count: %d, address/irw mask: [",
61  cpu_data[n].watch_reg_count);
62  for (i = 0; i < cpu_data[n].watch_reg_count; i++)
63  seq_printf(m, "%s0x%04x", i ? ", " : "" ,
64  cpu_data[n].watch_reg_masks[i]);
65  seq_printf(m, "]\n");
66  }
67 
68  seq_printf(m, "ASEs implemented\t:");
69  if (cpu_has_mips16) seq_printf(m, "%s", " mips16");
70  if (cpu_has_mdmx) seq_printf(m, "%s", " mdmx");
71  if (cpu_has_mips3d) seq_printf(m, "%s", " mips3d");
72  if (cpu_has_smartmips) seq_printf(m, "%s", " smartmips");
73  if (cpu_has_dsp) seq_printf(m, "%s", " dsp");
74  if (cpu_has_dsp2) seq_printf(m, "%s", " dsp2");
75  if (cpu_has_mipsmt) seq_printf(m, "%s", " mt");
76  seq_printf(m, "\n");
77 
78  seq_printf(m, "shadow register sets\t: %d\n",
79  cpu_data[n].srsets);
80  seq_printf(m, "kscratch registers\t: %d\n",
81  hweight8(cpu_data[n].kscratch_mask));
82  seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core);
83 
84  sprintf(fmt, "VCE%%c exceptions\t\t: %s\n",
85  cpu_has_vce ? "%u" : "not available");
86  seq_printf(m, fmt, 'D', vced_count);
87  seq_printf(m, fmt, 'I', vcei_count);
88  seq_printf(m, "\n");
89 
90  return 0;
91 }
92 
93 static void *c_start(struct seq_file *m, loff_t *pos)
94 {
95  unsigned long i = *pos;
96 
97  return i < NR_CPUS ? (void *) (i + 1) : NULL;
98 }
99 
100 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
101 {
102  ++*pos;
103  return c_start(m, pos);
104 }
105 
106 static void c_stop(struct seq_file *m, void *v)
107 {
108 }
109 
110 const struct seq_operations cpuinfo_op = {
111  .start = c_start,
112  .next = c_next,
113  .stop = c_stop,
114  .show = show_cpuinfo,
115 };
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