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1da177e4 LT |
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 | * | |
54176736 RB |
6 | * Copyright (C) 2004, 2005 Ralf Baechle |
7 | * Copyright (C) 2005 MIPS Technologies, Inc. | |
1da177e4 | 8 | */ |
e52dd9fc | 9 | #include <linux/compiler.h> |
1da177e4 LT |
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> | |
69f24d17 | 15 | #include <asm/cpu-type.h> |
1da177e4 LT |
16 | |
17 | #include "op_impl.h" | |
18 | ||
e52dd9fc | 19 | extern struct op_mips_model op_model_mipsxx_ops __weak; |
e52dd9fc | 20 | extern struct op_mips_model op_model_loongson2_ops __weak; |
1da177e4 LT |
21 | |
22 | static struct op_mips_model *model; | |
23 | ||
24 | static struct op_counter_config ctr[20]; | |
25 | ||
26 | static int op_mips_setup(void) | |
27 | { | |
28 | /* Pre-compute the values to stuff in the hardware registers. */ | |
29 | model->reg_setup(ctr); | |
30 | ||
70342287 | 31 | /* Configure the registers on all cpus. */ |
15c8b6c1 | 32 | on_each_cpu(model->cpu_setup, NULL, 1); |
1da177e4 | 33 | |
70342287 | 34 | return 0; |
1da177e4 LT |
35 | } |
36 | ||
ef7bca14 | 37 | static int op_mips_create_files(struct dentry *root) |
1da177e4 LT |
38 | { |
39 | int i; | |
40 | ||
41 | for (i = 0; i < model->num_counters; ++i) { | |
42 | struct dentry *dir; | |
0c6856f7 | 43 | char buf[4]; |
1da177e4 LT |
44 | |
45 | snprintf(buf, sizeof buf, "%d", i); | |
ecde2823 | 46 | dir = oprofilefs_mkdir(root, buf); |
ef7bca14 | 47 | |
6af4ea0b AV |
48 | oprofilefs_create_ulong(dir, "enabled", &ctr[i].enabled); |
49 | oprofilefs_create_ulong(dir, "event", &ctr[i].event); | |
50 | oprofilefs_create_ulong(dir, "count", &ctr[i].count); | |
51 | oprofilefs_create_ulong(dir, "kernel", &ctr[i].kernel); | |
52 | oprofilefs_create_ulong(dir, "user", &ctr[i].user); | |
53 | oprofilefs_create_ulong(dir, "exl", &ctr[i].exl); | |
54176736 | 54 | /* Dummy. */ |
6af4ea0b | 55 | oprofilefs_create_ulong(dir, "unit_mask", &ctr[i].unit_mask); |
1da177e4 LT |
56 | } |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | static int op_mips_start(void) | |
62 | { | |
15c8b6c1 | 63 | on_each_cpu(model->cpu_start, NULL, 1); |
1da177e4 LT |
64 | |
65 | return 0; | |
66 | } | |
67 | ||
68 | static void op_mips_stop(void) | |
69 | { | |
70 | /* Disable performance monitoring for all counters. */ | |
15c8b6c1 | 71 | on_each_cpu(model->cpu_stop, NULL, 1); |
1da177e4 LT |
72 | } |
73 | ||
54176736 | 74 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
1da177e4 LT |
75 | { |
76 | struct op_mips_model *lmodel = NULL; | |
54176736 | 77 | int res; |
1da177e4 | 78 | |
10cc3529 | 79 | switch (current_cpu_type()) { |
2065988e | 80 | case CPU_5KC: |
113c62d9 | 81 | case CPU_M14KC: |
f8fa4811 | 82 | case CPU_M14KEC: |
2065988e | 83 | case CPU_20KC: |
1da177e4 | 84 | case CPU_24K: |
2065988e | 85 | case CPU_25KF: |
fcfd980c | 86 | case CPU_34K: |
39b8d525 | 87 | case CPU_1004K: |
c620953c | 88 | case CPU_74K: |
2fa36399 | 89 | case CPU_LOONGSON1: |
c03bc121 MM |
90 | case CPU_SB1: |
91 | case CPU_SB1A: | |
714cfe78 RB |
92 | case CPU_R10000: |
93 | case CPU_R12000: | |
94 | case CPU_R14000: | |
c783390a | 95 | case CPU_XLR: |
1acf1ca7 | 96 | lmodel = &op_model_mipsxx_ops; |
1da177e4 LT |
97 | break; |
98 | ||
67b35e5d WZ |
99 | case CPU_LOONGSON2: |
100 | lmodel = &op_model_loongson2_ops; | |
101 | break; | |
1da177e4 LT |
102 | }; |
103 | ||
104 | if (!lmodel) | |
54176736 | 105 | return -ENODEV; |
1da177e4 | 106 | |
54176736 RB |
107 | res = lmodel->init(); |
108 | if (res) | |
109 | return res; | |
1da177e4 LT |
110 | |
111 | model = lmodel; | |
112 | ||
54176736 RB |
113 | ops->create_files = op_mips_create_files; |
114 | ops->setup = op_mips_setup; | |
70342287 | 115 | //ops->shutdown = op_mips_shutdown; |
54176736 RB |
116 | ops->start = op_mips_start; |
117 | ops->stop = op_mips_stop; | |
118 | ops->cpu_type = lmodel->cpu_type; | |
5f307491 | 119 | ops->backtrace = op_mips_backtrace; |
1da177e4 LT |
120 | |
121 | printk(KERN_INFO "oprofile: using %s performance monitoring.\n", | |
122 | lmodel->cpu_type); | |
54176736 RB |
123 | |
124 | return 0; | |
1da177e4 LT |
125 | } |
126 | ||
127 | void oprofile_arch_exit(void) | |
128 | { | |
49e31ca8 RB |
129 | if (model) |
130 | model->exit(); | |
1da177e4 | 131 | } |