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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) { | |
48 | char buf[NR_CPUS*5]; | |
49 | cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask); | |
50 | seq_printf(m, "cpu count\t: %d\n", num_online_cpus()); | |
51 | seq_printf(m, "cpu list\t: %s\n", buf); | |
52 | seq_printf(m, "model name\t: %s\n", chip_model); | |
53 | seq_printf(m, "flags\t\t:\n"); /* nothing for now */ | |
54 | seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n", | |
55 | get_clock_rate() / 1000000, | |
56 | (get_clock_rate() % 1000000)); | |
57 | seq_printf(m, "bogomips\t: %lu.%02lu\n\n", | |
58 | loops_per_jiffy/(500000/HZ), | |
59 | (loops_per_jiffy/(5000/HZ)) % 100); | |
60 | } | |
61 | ||
62 | #ifdef CONFIG_SMP | |
63 | if (!cpu_online(n)) | |
64 | return 0; | |
65 | #endif | |
66 | ||
67 | seq_printf(m, "processor\t: %d\n", n); | |
68 | ||
69 | /* Print only num_online_cpus() blank lines total. */ | |
70 | if (cpumask_next(n, cpu_online_mask) < nr_cpu_ids) | |
71 | seq_printf(m, "\n"); | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
76 | static void *c_start(struct seq_file *m, loff_t *pos) | |
77 | { | |
78 | return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL; | |
79 | } | |
80 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
81 | { | |
82 | ++*pos; | |
83 | return c_start(m, pos); | |
84 | } | |
85 | static void c_stop(struct seq_file *m, void *v) | |
86 | { | |
87 | } | |
88 | const struct seq_operations cpuinfo_op = { | |
89 | .start = c_start, | |
90 | .next = c_next, | |
91 | .stop = c_stop, | |
92 | .show = show_cpuinfo, | |
93 | }; | |
f133ecca CM |
94 | |
95 | /* | |
96 | * Support /proc/tile directory | |
97 | */ | |
98 | ||
99 | static int __init proc_tile_init(void) | |
100 | { | |
101 | struct proc_dir_entry *root = proc_mkdir("tile", NULL); | |
102 | if (root == NULL) | |
103 | return 0; | |
104 | ||
105 | proc_tile_hardwall_init(root); | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | arch_initcall(proc_tile_init); | |
111 | ||
112 | /* | |
113 | * Support /proc/sys/tile directory | |
114 | */ | |
115 | ||
804bcaf7 | 116 | static struct ctl_table unaligned_subtable[] = { |
f133ecca CM |
117 | { |
118 | .procname = "enabled", | |
119 | .data = &unaligned_fixup, | |
120 | .maxlen = sizeof(int), | |
121 | .mode = 0644, | |
122 | .proc_handler = &proc_dointvec | |
123 | }, | |
124 | { | |
125 | .procname = "printk", | |
126 | .data = &unaligned_printk, | |
127 | .maxlen = sizeof(int), | |
128 | .mode = 0644, | |
129 | .proc_handler = &proc_dointvec | |
130 | }, | |
131 | { | |
132 | .procname = "count", | |
133 | .data = &unaligned_fixup_count, | |
134 | .maxlen = sizeof(int), | |
135 | .mode = 0644, | |
136 | .proc_handler = &proc_dointvec | |
137 | }, | |
138 | {} | |
139 | }; | |
140 | ||
804bcaf7 | 141 | static struct ctl_table unaligned_table[] = { |
f133ecca CM |
142 | { |
143 | .procname = "unaligned_fixup", | |
144 | .mode = 0555, | |
145 | .child = unaligned_subtable | |
146 | }, | |
147 | {} | |
148 | }; | |
f133ecca CM |
149 | |
150 | static struct ctl_path tile_path[] = { | |
151 | { .procname = "tile" }, | |
152 | { } | |
153 | }; | |
154 | ||
155 | static int __init proc_sys_tile_init(void) | |
156 | { | |
f133ecca | 157 | register_sysctl_paths(tile_path, unaligned_table); |
f133ecca CM |
158 | return 0; |
159 | } | |
160 | ||
161 | arch_initcall(proc_sys_tile_init); |