Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 6 | * Copyright (C) 2004, 2005 Ralf Baechle |
| 7 | * Copyright (C) 2005 MIPS Technologies, Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | */ |
| 9 | #include <linux/errno.h> |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/oprofile.h> |
| 12 | #include <linux/smp.h> |
| 13 | #include <asm/cpu-info.h> |
| 14 | |
| 15 | #include "op_impl.h" |
| 16 | |
| 17 | extern struct op_mips_model op_model_mipsxx __attribute__((weak)); |
| 18 | extern struct op_mips_model op_model_rm9000 __attribute__((weak)); |
| 19 | |
| 20 | static struct op_mips_model *model; |
| 21 | |
| 22 | static struct op_counter_config ctr[20]; |
| 23 | |
| 24 | static int op_mips_setup(void) |
| 25 | { |
| 26 | /* Pre-compute the values to stuff in the hardware registers. */ |
| 27 | model->reg_setup(ctr); |
| 28 | |
| 29 | /* Configure the registers on all cpus. */ |
| 30 | on_each_cpu(model->cpu_setup, 0, 0, 1); |
| 31 | |
| 32 | return 0; |
| 33 | } |
| 34 | |
| 35 | static int op_mips_create_files(struct super_block * sb, struct dentry * root) |
| 36 | { |
| 37 | int i; |
| 38 | |
| 39 | for (i = 0; i < model->num_counters; ++i) { |
| 40 | struct dentry *dir; |
| 41 | char buf[3]; |
| 42 | |
| 43 | snprintf(buf, sizeof buf, "%d", i); |
| 44 | dir = oprofilefs_mkdir(sb, root, buf); |
| 45 | |
| 46 | oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled); |
| 47 | oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event); |
| 48 | oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel); |
| 50 | oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user); |
| 51 | oprofilefs_create_ulong(sb, dir, "exl", &ctr[i].exl); |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 52 | /* Dummy. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask); |
| 54 | } |
| 55 | |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | static int op_mips_start(void) |
| 60 | { |
| 61 | on_each_cpu(model->cpu_start, NULL, 0, 1); |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | static void op_mips_stop(void) |
| 67 | { |
| 68 | /* Disable performance monitoring for all counters. */ |
| 69 | on_each_cpu(model->cpu_stop, NULL, 0, 1); |
| 70 | } |
| 71 | |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 72 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
| 74 | struct op_mips_model *lmodel = NULL; |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 75 | int res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | switch (current_cpu_data.cputype) { |
Ralf Baechle | 2065988 | 2005-12-09 12:42:13 +0000 | [diff] [blame] | 78 | case CPU_5KC: |
| 79 | case CPU_20KC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | case CPU_24K: |
Ralf Baechle | 2065988 | 2005-12-09 12:42:13 +0000 | [diff] [blame] | 81 | case CPU_25KF: |
Ralf Baechle | fcfd980 | 2006-02-01 17:54:30 +0000 | [diff] [blame] | 82 | case CPU_34K: |
Mark Mason | c03bc12 | 2006-01-17 12:06:32 -0800 | [diff] [blame] | 83 | case CPU_SB1: |
| 84 | case CPU_SB1A: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | lmodel = &op_model_mipsxx; |
| 86 | break; |
| 87 | |
| 88 | case CPU_RM9000: |
| 89 | lmodel = &op_model_rm9000; |
| 90 | break; |
| 91 | }; |
| 92 | |
| 93 | if (!lmodel) |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 94 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 96 | res = lmodel->init(); |
| 97 | if (res) |
| 98 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
| 100 | model = lmodel; |
| 101 | |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 102 | ops->create_files = op_mips_create_files; |
| 103 | ops->setup = op_mips_setup; |
| 104 | //ops->shutdown = op_mips_shutdown; |
| 105 | ops->start = op_mips_start; |
| 106 | ops->stop = op_mips_stop; |
| 107 | ops->cpu_type = lmodel->cpu_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
| 109 | printk(KERN_INFO "oprofile: using %s performance monitoring.\n", |
| 110 | lmodel->cpu_type); |
Ralf Baechle | 5417673 | 2005-02-07 02:54:29 +0000 | [diff] [blame] | 111 | |
| 112 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | void oprofile_arch_exit(void) |
| 116 | { |
| 117 | model->exit(); |
| 118 | } |