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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 *
6 * Copyright (C) 2004, 2005 Ralf Baechle
7 * Copyright (C) 2005 MIPS Technologies, Inc.
8 */
9#include <linux/compiler.h>
10#include <linux/errno.h>
11#include <linux/init.h>
12#include <linux/oprofile.h>
13#include <linux/smp.h>
14#include <asm/cpu-info.h>
15#include <asm/cpu-type.h>
16
17#include "op_impl.h"
18
19extern struct op_mips_model op_model_mipsxx_ops __weak;
20extern struct op_mips_model op_model_loongson2_ops __weak;
21extern struct op_mips_model op_model_loongson3_ops __weak;
22
23static struct op_mips_model *model;
24
25static struct op_counter_config ctr[20];
26
27static int op_mips_setup(void)
28{
29 /* Pre-compute the values to stuff in the hardware registers. */
30 model->reg_setup(ctr);
31
32 /* Configure the registers on all cpus. */
33 on_each_cpu(model->cpu_setup, NULL, 1);
34
35 return 0;
36}
37
38static int op_mips_create_files(struct dentry *root)
39{
40 int i;
41
42 for (i = 0; i < model->num_counters; ++i) {
43 struct dentry *dir;
44 char buf[4];
45
46 snprintf(buf, sizeof buf, "%d", i);
47 dir = oprofilefs_mkdir(root, buf);
48
49 oprofilefs_create_ulong(dir, "enabled", &ctr[i].enabled);
50 oprofilefs_create_ulong(dir, "event", &ctr[i].event);
51 oprofilefs_create_ulong(dir, "count", &ctr[i].count);
52 oprofilefs_create_ulong(dir, "kernel", &ctr[i].kernel);
53 oprofilefs_create_ulong(dir, "user", &ctr[i].user);
54 oprofilefs_create_ulong(dir, "exl", &ctr[i].exl);
55 /* Dummy. */
56 oprofilefs_create_ulong(dir, "unit_mask", &ctr[i].unit_mask);
57 }
58
59 return 0;
60}
61
62static int op_mips_start(void)
63{
64 on_each_cpu(model->cpu_start, NULL, 1);
65
66 return 0;
67}
68
69static void op_mips_stop(void)
70{
71 /* Disable performance monitoring for all counters. */
72 on_each_cpu(model->cpu_stop, NULL, 1);
73}
74
75int __init oprofile_arch_init(struct oprofile_operations *ops)
76{
77 struct op_mips_model *lmodel = NULL;
78 int res;
79
80 switch (current_cpu_type()) {
81 case CPU_5KC:
82 case CPU_M14KC:
83 case CPU_M14KEC:
84 case CPU_20KC:
85 case CPU_24K:
86 case CPU_25KF:
87 case CPU_34K:
88 case CPU_1004K:
89 case CPU_74K:
90 case CPU_1074K:
91 case CPU_INTERAPTIV:
92 case CPU_PROAPTIV:
93 case CPU_P5600:
94 case CPU_I6400:
95 case CPU_M5150:
96 case CPU_LOONGSON1:
97 case CPU_SB1:
98 case CPU_SB1A:
99 case CPU_R10000:
100 case CPU_R12000:
101 case CPU_R14000:
102 case CPU_R16000:
103 case CPU_XLR:
104 lmodel = &op_model_mipsxx_ops;
105 break;
106
107 case CPU_LOONGSON2:
108 lmodel = &op_model_loongson2_ops;
109 break;
110 case CPU_LOONGSON3:
111 lmodel = &op_model_loongson3_ops;
112 break;
113 };
114
115 /*
116 * Always set the backtrace. This allows unsupported CPU types to still
117 * use timer-based oprofile.
118 */
119 ops->backtrace = op_mips_backtrace;
120
121 if (!lmodel)
122 return -ENODEV;
123
124 res = lmodel->init();
125 if (res)
126 return res;
127
128 model = lmodel;
129
130 ops->create_files = op_mips_create_files;
131 ops->setup = op_mips_setup;
132 //ops->shutdown = op_mips_shutdown;
133 ops->start = op_mips_start;
134 ops->stop = op_mips_stop;
135 ops->cpu_type = lmodel->cpu_type;
136
137 printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
138 lmodel->cpu_type);
139
140 return 0;
141}
142
143void oprofile_arch_exit(void)
144{
145 if (model)
146 model->exit();
147}
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 *
6 * Copyright (C) 2004, 2005 Ralf Baechle
7 * Copyright (C) 2005 MIPS Technologies, Inc.
8 */
9#include <linux/compiler.h>
10#include <linux/errno.h>
11#include <linux/init.h>
12#include <linux/oprofile.h>
13#include <linux/smp.h>
14#include <asm/cpu-info.h>
15
16#include "op_impl.h"
17
18extern struct op_mips_model op_model_mipsxx_ops __weak;
19extern struct op_mips_model op_model_rm9000_ops __weak;
20extern struct op_mips_model op_model_loongson2_ops __weak;
21
22static struct op_mips_model *model;
23
24static struct op_counter_config ctr[20];
25
26static int op_mips_setup(void)
27{
28 /* Pre-compute the values to stuff in the hardware registers. */
29 model->reg_setup(ctr);
30
31 /* Configure the registers on all cpus. */
32 on_each_cpu(model->cpu_setup, NULL, 1);
33
34 return 0;
35}
36
37static int op_mips_create_files(struct super_block *sb, struct dentry *root)
38{
39 int i;
40
41 for (i = 0; i < model->num_counters; ++i) {
42 struct dentry *dir;
43 char buf[4];
44
45 snprintf(buf, sizeof buf, "%d", i);
46 dir = oprofilefs_mkdir(sb, root, buf);
47
48 oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled);
49 oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event);
50 oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count);
51 oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
52 oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
53 oprofilefs_create_ulong(sb, dir, "exl", &ctr[i].exl);
54 /* Dummy. */
55 oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
56 }
57
58 return 0;
59}
60
61static int op_mips_start(void)
62{
63 on_each_cpu(model->cpu_start, NULL, 1);
64
65 return 0;
66}
67
68static void op_mips_stop(void)
69{
70 /* Disable performance monitoring for all counters. */
71 on_each_cpu(model->cpu_stop, NULL, 1);
72}
73
74int __init oprofile_arch_init(struct oprofile_operations *ops)
75{
76 struct op_mips_model *lmodel = NULL;
77 int res;
78
79 switch (current_cpu_type()) {
80 case CPU_5KC:
81 case CPU_M14KC:
82 case CPU_20KC:
83 case CPU_24K:
84 case CPU_25KF:
85 case CPU_34K:
86 case CPU_1004K:
87 case CPU_74K:
88 case CPU_SB1:
89 case CPU_SB1A:
90 case CPU_R10000:
91 case CPU_R12000:
92 case CPU_R14000:
93 lmodel = &op_model_mipsxx_ops;
94 break;
95
96 case CPU_RM9000:
97 lmodel = &op_model_rm9000_ops;
98 break;
99 case CPU_LOONGSON2:
100 lmodel = &op_model_loongson2_ops;
101 break;
102 };
103
104 if (!lmodel)
105 return -ENODEV;
106
107 res = lmodel->init();
108 if (res)
109 return res;
110
111 model = lmodel;
112
113 ops->create_files = op_mips_create_files;
114 ops->setup = op_mips_setup;
115 //ops->shutdown = op_mips_shutdown;
116 ops->start = op_mips_start;
117 ops->stop = op_mips_stop;
118 ops->cpu_type = lmodel->cpu_type;
119 ops->backtrace = op_mips_backtrace;
120
121 printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
122 lmodel->cpu_type);
123
124 return 0;
125}
126
127void oprofile_arch_exit(void)
128{
129 if (model)
130 model->exit();
131}