2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
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.
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
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>
22 #include <linux/proc_fs.h>
23 #include <linux/sysctl.h>
24 #include <linux/hardirq.h>
25 #include <linux/hugetlb.h>
26 #include <linux/mman.h>
27 #include <asm/unaligned.h>
28 #include <asm/pgtable.h>
29 #include <asm/processor.h>
30 #include <asm/sections.h>
31 #include <asm/homecache.h>
32 #include <asm/hardwall.h>
33 #include <arch/chip.h>
37 * Support /proc/cpuinfo
40 #define cpu_to_ptr(n) ((void *)((long)(n)+1))
41 #define ptr_to_cpu(p) ((long)(p) - 1)
43 static int show_cpuinfo(struct seq_file
*m
, void *v
)
45 int n
= ptr_to_cpu(v
);
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);
67 seq_printf(m
, "processor\t: %d\n", n
);
69 /* Print only num_online_cpus() blank lines total. */
70 if (cpumask_next(n
, cpu_online_mask
) < nr_cpu_ids
)
76 static void *c_start(struct seq_file
*m
, loff_t
*pos
)
78 return *pos
< nr_cpu_ids
? cpu_to_ptr(*pos
) : NULL
;
80 static void *c_next(struct seq_file
*m
, void *v
, loff_t
*pos
)
83 return c_start(m
, pos
);
85 static void c_stop(struct seq_file
*m
, void *v
)
88 const struct seq_operations cpuinfo_op
= {
96 * Support /proc/tile directory
99 static int __init
proc_tile_init(void)
101 struct proc_dir_entry
*root
= proc_mkdir("tile", NULL
);
105 proc_tile_hardwall_init(root
);
110 arch_initcall(proc_tile_init
);
113 * Support /proc/sys/tile directory
116 static ctl_table unaligned_subtable
[] = {
118 .procname
= "enabled",
119 .data
= &unaligned_fixup
,
120 .maxlen
= sizeof(int),
122 .proc_handler
= &proc_dointvec
125 .procname
= "printk",
126 .data
= &unaligned_printk
,
127 .maxlen
= sizeof(int),
129 .proc_handler
= &proc_dointvec
133 .data
= &unaligned_fixup_count
,
134 .maxlen
= sizeof(int),
136 .proc_handler
= &proc_dointvec
141 static ctl_table unaligned_table
[] = {
143 .procname
= "unaligned_fixup",
145 .child
= unaligned_subtable
150 static struct ctl_path tile_path
[] = {
151 { .procname
= "tile" },
155 static int __init
proc_sys_tile_init(void)
157 register_sysctl_paths(tile_path
, unaligned_table
);
161 arch_initcall(proc_sys_tile_init
);