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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; |
89467e73 | 21 | extern struct op_mips_model op_model_loongson3_ops __weak; |
1da177e4 LT |
22 | |
23 | static struct op_mips_model *model; | |
24 | ||
25 | static struct op_counter_config ctr[20]; | |
26 | ||
27 | static int op_mips_setup(void) | |
28 | { | |
29 | /* Pre-compute the values to stuff in the hardware registers. */ | |
30 | model->reg_setup(ctr); | |
31 | ||
70342287 | 32 | /* Configure the registers on all cpus. */ |
15c8b6c1 | 33 | on_each_cpu(model->cpu_setup, NULL, 1); |
1da177e4 | 34 | |
70342287 | 35 | return 0; |
1da177e4 LT |
36 | } |
37 | ||
ef7bca14 | 38 | static int op_mips_create_files(struct dentry *root) |
1da177e4 LT |
39 | { |
40 | int i; | |
41 | ||
42 | for (i = 0; i < model->num_counters; ++i) { | |
43 | struct dentry *dir; | |
0c6856f7 | 44 | char buf[4]; |
1da177e4 LT |
45 | |
46 | snprintf(buf, sizeof buf, "%d", i); | |
ecde2823 | 47 | dir = oprofilefs_mkdir(root, buf); |
ef7bca14 | 48 | |
6af4ea0b AV |
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); | |
54176736 | 55 | /* Dummy. */ |
6af4ea0b | 56 | oprofilefs_create_ulong(dir, "unit_mask", &ctr[i].unit_mask); |
1da177e4 LT |
57 | } |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
62 | static int op_mips_start(void) | |
63 | { | |
15c8b6c1 | 64 | on_each_cpu(model->cpu_start, NULL, 1); |
1da177e4 LT |
65 | |
66 | return 0; | |
67 | } | |
68 | ||
69 | static void op_mips_stop(void) | |
70 | { | |
71 | /* Disable performance monitoring for all counters. */ | |
15c8b6c1 | 72 | on_each_cpu(model->cpu_stop, NULL, 1); |
1da177e4 LT |
73 | } |
74 | ||
54176736 | 75 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
1da177e4 LT |
76 | { |
77 | struct op_mips_model *lmodel = NULL; | |
54176736 | 78 | int res; |
1da177e4 | 79 | |
fa0c879f | 80 | switch (boot_cpu_type()) { |
2065988e | 81 | case CPU_5KC: |
113c62d9 | 82 | case CPU_M14KC: |
f8fa4811 | 83 | case CPU_M14KEC: |
2065988e | 84 | case CPU_20KC: |
1da177e4 | 85 | case CPU_24K: |
2065988e | 86 | case CPU_25KF: |
fcfd980c | 87 | case CPU_34K: |
39b8d525 | 88 | case CPU_1004K: |
c620953c | 89 | case CPU_74K: |
442e14a2 | 90 | case CPU_1074K: |
26ab96df | 91 | case CPU_INTERAPTIV: |
708ac4b8 | 92 | case CPU_PROAPTIV: |
8c7f6ba3 | 93 | case CPU_P5600: |
4e88a862 | 94 | case CPU_I6400: |
f36c4720 | 95 | case CPU_M5150: |
2fa36399 | 96 | case CPU_LOONGSON1: |
c03bc121 MM |
97 | case CPU_SB1: |
98 | case CPU_SB1A: | |
714cfe78 RB |
99 | case CPU_R10000: |
100 | case CPU_R12000: | |
101 | case CPU_R14000: | |
30577391 | 102 | case CPU_R16000: |
c783390a | 103 | case CPU_XLR: |
1acf1ca7 | 104 | lmodel = &op_model_mipsxx_ops; |
1da177e4 LT |
105 | break; |
106 | ||
67b35e5d WZ |
107 | case CPU_LOONGSON2: |
108 | lmodel = &op_model_loongson2_ops; | |
109 | break; | |
89467e73 HC |
110 | case CPU_LOONGSON3: |
111 | lmodel = &op_model_loongson3_ops; | |
112 | break; | |
1da177e4 LT |
113 | }; |
114 | ||
1b48142a AK |
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 | ||
1da177e4 | 121 | if (!lmodel) |
54176736 | 122 | return -ENODEV; |
1da177e4 | 123 | |
54176736 RB |
124 | res = lmodel->init(); |
125 | if (res) | |
126 | return res; | |
1da177e4 LT |
127 | |
128 | model = lmodel; | |
129 | ||
54176736 RB |
130 | ops->create_files = op_mips_create_files; |
131 | ops->setup = op_mips_setup; | |
70342287 | 132 | //ops->shutdown = op_mips_shutdown; |
54176736 RB |
133 | ops->start = op_mips_start; |
134 | ops->stop = op_mips_stop; | |
135 | ops->cpu_type = lmodel->cpu_type; | |
1da177e4 LT |
136 | |
137 | printk(KERN_INFO "oprofile: using %s performance monitoring.\n", | |
138 | lmodel->cpu_type); | |
54176736 RB |
139 | |
140 | return 0; | |
1da177e4 LT |
141 | } |
142 | ||
143 | void oprofile_arch_exit(void) | |
144 | { | |
49e31ca8 RB |
145 | if (model) |
146 | model->exit(); | |
1da177e4 | 147 | } |