blob: 4e0a90b3916b4536c75787a4aa30f6b376e03879 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 Baechle54176732005-02-07 02:54:29 +00006 * Copyright (C) 2004, 2005 Ralf Baechle
7 * Copyright (C) 2005 MIPS Technologies, Inc.
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 */
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
Atsushi Nemoto1acf1ca2006-05-23 16:42:38 +090017extern struct op_mips_model op_model_mipsxx_ops __attribute__((weak));
18extern struct op_mips_model op_model_rm9000_ops __attribute__((weak));
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
20static struct op_mips_model *model;
21
22static struct op_counter_config ctr[20];
23
24static 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. */
Ralf Baechle5dac8302006-04-24 10:50:02 +010030 on_each_cpu(model->cpu_setup, NULL, 0, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32 return 0;
33}
34
35static 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;
Markus Armbruster0c6856f2006-06-26 00:24:34 -070041 char buf[4];
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
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 Torvalds1da177e2005-04-16 15:20:36 -070049 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 Baechle54176732005-02-07 02:54:29 +000052 /* Dummy. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
54 }
55
56 return 0;
57}
58
59static int op_mips_start(void)
60{
61 on_each_cpu(model->cpu_start, NULL, 0, 1);
62
63 return 0;
64}
65
66static 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 Baechle54176732005-02-07 02:54:29 +000072int __init oprofile_arch_init(struct oprofile_operations *ops)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073{
74 struct op_mips_model *lmodel = NULL;
Ralf Baechle54176732005-02-07 02:54:29 +000075 int res;
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
77 switch (current_cpu_data.cputype) {
Ralf Baechle20659882005-12-09 12:42:13 +000078 case CPU_5KC:
79 case CPU_20KC:
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 case CPU_24K:
Ralf Baechle20659882005-12-09 12:42:13 +000081 case CPU_25KF:
Ralf Baechlefcfd9802006-02-01 17:54:30 +000082 case CPU_34K:
Chris Dearmanc6209532006-05-02 14:08:46 +010083 case CPU_74K:
Mark Masonc03bc122006-01-17 12:06:32 -080084 case CPU_SB1:
85 case CPU_SB1A:
Ralf Baechle714cfe72006-10-23 00:44:02 +010086 case CPU_R10000:
87 case CPU_R12000:
88 case CPU_R14000:
Atsushi Nemoto1acf1ca2006-05-23 16:42:38 +090089 lmodel = &op_model_mipsxx_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 break;
91
92 case CPU_RM9000:
Atsushi Nemoto1acf1ca2006-05-23 16:42:38 +090093 lmodel = &op_model_rm9000_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 break;
95 };
96
97 if (!lmodel)
Ralf Baechle54176732005-02-07 02:54:29 +000098 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Ralf Baechle54176732005-02-07 02:54:29 +0000100 res = lmodel->init();
101 if (res)
102 return res;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
104 model = lmodel;
105
Ralf Baechle54176732005-02-07 02:54:29 +0000106 ops->create_files = op_mips_create_files;
107 ops->setup = op_mips_setup;
108 //ops->shutdown = op_mips_shutdown;
109 ops->start = op_mips_start;
110 ops->stop = op_mips_stop;
111 ops->cpu_type = lmodel->cpu_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112
113 printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
114 lmodel->cpu_type);
Ralf Baechle54176732005-02-07 02:54:29 +0000115
116 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117}
118
119void oprofile_arch_exit(void)
120{
Ralf Baechle49e31ca2006-04-24 10:48:54 +0100121 if (model)
122 model->exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123}