| Chris Metcalf | 867e359 | 2010-05-28 23:09:12 -0400 | [diff] [blame] | 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> |
| 25 | #include <linux/mman.h> |
| Chris Metcalf | 867e359 | 2010-05-28 23:09:12 -0400 | [diff] [blame] | 26 | #include <asm/pgtable.h> |
| 27 | #include <asm/processor.h> |
| 28 | #include <asm/sections.h> |
| 29 | #include <asm/homecache.h> |
| 30 | #include <arch/chip.h> |
| 31 | |
| 32 | |
| 33 | /* |
| 34 | * Support /proc/cpuinfo |
| 35 | */ |
| 36 | |
| 37 | #define cpu_to_ptr(n) ((void *)((long)(n)+1)) |
| 38 | #define ptr_to_cpu(p) ((long)(p) - 1) |
| 39 | |
| 40 | static int show_cpuinfo(struct seq_file *m, void *v) |
| 41 | { |
| 42 | int n = ptr_to_cpu(v); |
| 43 | |
| 44 | if (n == 0) { |
| 45 | char buf[NR_CPUS*5]; |
| 46 | cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask); |
| 47 | seq_printf(m, "cpu count\t: %d\n", num_online_cpus()); |
| 48 | seq_printf(m, "cpu list\t: %s\n", buf); |
| 49 | seq_printf(m, "model name\t: %s\n", chip_model); |
| 50 | seq_printf(m, "flags\t\t:\n"); /* nothing for now */ |
| 51 | seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n", |
| 52 | get_clock_rate() / 1000000, |
| 53 | (get_clock_rate() % 1000000)); |
| 54 | seq_printf(m, "bogomips\t: %lu.%02lu\n\n", |
| 55 | loops_per_jiffy/(500000/HZ), |
| 56 | (loops_per_jiffy/(5000/HZ)) % 100); |
| 57 | } |
| 58 | |
| 59 | #ifdef CONFIG_SMP |
| 60 | if (!cpu_online(n)) |
| 61 | return 0; |
| 62 | #endif |
| 63 | |
| 64 | seq_printf(m, "processor\t: %d\n", n); |
| 65 | |
| 66 | /* Print only num_online_cpus() blank lines total. */ |
| 67 | if (cpumask_next(n, cpu_online_mask) < nr_cpu_ids) |
| 68 | seq_printf(m, "\n"); |
| 69 | |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static void *c_start(struct seq_file *m, loff_t *pos) |
| 74 | { |
| 75 | return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL; |
| 76 | } |
| 77 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) |
| 78 | { |
| 79 | ++*pos; |
| 80 | return c_start(m, pos); |
| 81 | } |
| 82 | static void c_stop(struct seq_file *m, void *v) |
| 83 | { |
| 84 | } |
| 85 | const struct seq_operations cpuinfo_op = { |
| 86 | .start = c_start, |
| 87 | .next = c_next, |
| 88 | .stop = c_stop, |
| 89 | .show = show_cpuinfo, |
| 90 | }; |