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867e359b CM |
1 | /* |
2 | * Copyright 2010 Tilera Corporation. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation, version 2. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
11 | * NON INFRINGEMENT. See the GNU General Public License for | |
12 | * more details. | |
13 | */ | |
14 | ||
15 | #include <linux/smp.h> | |
16 | #include <linux/seq_file.h> | |
17 | #include <linux/threads.h> | |
18 | #include <linux/cpumask.h> | |
19 | #include <linux/timex.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/fs.h> | |
22 | #include <linux/proc_fs.h> | |
23 | #include <linux/sysctl.h> | |
24 | #include <linux/hardirq.h> | |
621b1955 | 25 | #include <linux/hugetlb.h> |
867e359b | 26 | #include <linux/mman.h> |
bd119c69 | 27 | #include <asm/unaligned.h> |
867e359b CM |
28 | #include <asm/pgtable.h> |
29 | #include <asm/processor.h> | |
30 | #include <asm/sections.h> | |
31 | #include <asm/homecache.h> | |
f133ecca | 32 | #include <asm/hardwall.h> |
867e359b CM |
33 | #include <arch/chip.h> |
34 | ||
35 | ||
36 | /* | |
37 | * Support /proc/cpuinfo | |
38 | */ | |
39 | ||
40 | #define cpu_to_ptr(n) ((void *)((long)(n)+1)) | |
41 | #define ptr_to_cpu(p) ((long)(p) - 1) | |
42 | ||
43 | static int show_cpuinfo(struct seq_file *m, void *v) | |
44 | { | |
45 | int n = ptr_to_cpu(v); | |
46 | ||
47 | if (n == 0) { | |
867e359b | 48 | seq_printf(m, "cpu count\t: %d\n", num_online_cpus()); |
839b2680 TH |
49 | seq_printf(m, "cpu list\t: %*pbl\n", |
50 | cpumask_pr_args(cpu_online_mask)); | |
867e359b CM |
51 | seq_printf(m, "model name\t: %s\n", chip_model); |
52 | seq_printf(m, "flags\t\t:\n"); /* nothing for now */ | |
53 | seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n", | |
54 | get_clock_rate() / 1000000, | |
55 | (get_clock_rate() % 1000000)); | |
56 | seq_printf(m, "bogomips\t: %lu.%02lu\n\n", | |
57 | loops_per_jiffy/(500000/HZ), | |
58 | (loops_per_jiffy/(5000/HZ)) % 100); | |
59 | } | |
60 | ||
61 | #ifdef CONFIG_SMP | |
62 | if (!cpu_online(n)) | |
63 | return 0; | |
64 | #endif | |
65 | ||
66 | seq_printf(m, "processor\t: %d\n", n); | |
67 | ||
68 | /* Print only num_online_cpus() blank lines total. */ | |
69 | if (cpumask_next(n, cpu_online_mask) < nr_cpu_ids) | |
70 | seq_printf(m, "\n"); | |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
75 | static void *c_start(struct seq_file *m, loff_t *pos) | |
76 | { | |
77 | return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL; | |
78 | } | |
79 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
80 | { | |
81 | ++*pos; | |
82 | return c_start(m, pos); | |
83 | } | |
84 | static void c_stop(struct seq_file *m, void *v) | |
85 | { | |
86 | } | |
87 | const struct seq_operations cpuinfo_op = { | |
88 | .start = c_start, | |
89 | .next = c_next, | |
90 | .stop = c_stop, | |
91 | .show = show_cpuinfo, | |
92 | }; | |
f133ecca CM |
93 | |
94 | /* | |
95 | * Support /proc/tile directory | |
96 | */ | |
97 | ||
98 | static int __init proc_tile_init(void) | |
99 | { | |
100 | struct proc_dir_entry *root = proc_mkdir("tile", NULL); | |
101 | if (root == NULL) | |
102 | return 0; | |
103 | ||
104 | proc_tile_hardwall_init(root); | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | arch_initcall(proc_tile_init); | |
110 | ||
111 | /* | |
112 | * Support /proc/sys/tile directory | |
113 | */ | |
114 | ||
804bcaf7 | 115 | static struct ctl_table unaligned_subtable[] = { |
f133ecca CM |
116 | { |
117 | .procname = "enabled", | |
118 | .data = &unaligned_fixup, | |
119 | .maxlen = sizeof(int), | |
120 | .mode = 0644, | |
121 | .proc_handler = &proc_dointvec | |
122 | }, | |
123 | { | |
124 | .procname = "printk", | |
125 | .data = &unaligned_printk, | |
126 | .maxlen = sizeof(int), | |
127 | .mode = 0644, | |
128 | .proc_handler = &proc_dointvec | |
129 | }, | |
130 | { | |
131 | .procname = "count", | |
132 | .data = &unaligned_fixup_count, | |
133 | .maxlen = sizeof(int), | |
134 | .mode = 0644, | |
135 | .proc_handler = &proc_dointvec | |
136 | }, | |
137 | {} | |
138 | }; | |
139 | ||
804bcaf7 | 140 | static struct ctl_table unaligned_table[] = { |
f133ecca CM |
141 | { |
142 | .procname = "unaligned_fixup", | |
143 | .mode = 0555, | |
144 | .child = unaligned_subtable | |
145 | }, | |
146 | {} | |
147 | }; | |
f133ecca CM |
148 | |
149 | static struct ctl_path tile_path[] = { | |
150 | { .procname = "tile" }, | |
151 | { } | |
152 | }; | |
153 | ||
154 | static int __init proc_sys_tile_init(void) | |
155 | { | |
f133ecca | 156 | register_sysctl_paths(tile_path, unaligned_table); |
f133ecca CM |
157 | return 0; |
158 | } | |
159 | ||
160 | arch_initcall(proc_sys_tile_init); |