Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1/*
2 * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
3 *
4 * Based on alpha version.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#ifndef _ASM_POWERPC_OPROFILE_IMPL_H
13#define _ASM_POWERPC_OPROFILE_IMPL_H
14#ifdef __KERNEL__
15
16#define OP_MAX_COUNTER 8
17
18/* Per-counter configuration as set via oprofilefs. */
19struct op_counter_config {
20 unsigned long enabled;
21 unsigned long event;
22 unsigned long count;
23 /* Classic doesn't support per-counter user/kernel selection */
24 unsigned long kernel;
25 unsigned long user;
26 unsigned long unit_mask;
27};
28
29/* System-wide configuration as set via oprofilefs. */
30struct op_system_config {
31#ifdef CONFIG_PPC64
32 unsigned long mmcr0;
33 unsigned long mmcr1;
34 unsigned long mmcra;
35#endif
36 unsigned long enable_kernel;
37 unsigned long enable_user;
38};
39
40/* Per-arch configuration */
41struct op_powerpc_model {
42 void (*reg_setup) (struct op_counter_config *,
43 struct op_system_config *,
44 int num_counters);
45 void (*cpu_setup) (void *);
46 void (*start) (struct op_counter_config *);
47 void (*stop) (void);
48 void (*handle_interrupt) (struct pt_regs *,
49 struct op_counter_config *);
50 int num_counters;
51};
52
53extern struct op_powerpc_model op_model_fsl_booke;
54extern struct op_powerpc_model op_model_rs64;
55extern struct op_powerpc_model op_model_power4;
56extern struct op_powerpc_model op_model_7450;
57
58#ifndef CONFIG_FSL_BOOKE
59
60/* All the classic PPC parts use these */
61static inline unsigned int ctr_read(unsigned int i)
62{
63 switch(i) {
64 case 0:
65 return mfspr(SPRN_PMC1);
66 case 1:
67 return mfspr(SPRN_PMC2);
68 case 2:
69 return mfspr(SPRN_PMC3);
70 case 3:
71 return mfspr(SPRN_PMC4);
72 case 4:
73 return mfspr(SPRN_PMC5);
74 case 5:
75 return mfspr(SPRN_PMC6);
76
77/* No PPC32 chip has more than 6 so far */
78#ifdef CONFIG_PPC64
79 case 6:
80 return mfspr(SPRN_PMC7);
81 case 7:
82 return mfspr(SPRN_PMC8);
83#endif
84 default:
85 return 0;
86 }
87}
88
89static inline void ctr_write(unsigned int i, unsigned int val)
90{
91 switch(i) {
92 case 0:
93 mtspr(SPRN_PMC1, val);
94 break;
95 case 1:
96 mtspr(SPRN_PMC2, val);
97 break;
98 case 2:
99 mtspr(SPRN_PMC3, val);
100 break;
101 case 3:
102 mtspr(SPRN_PMC4, val);
103 break;
104 case 4:
105 mtspr(SPRN_PMC5, val);
106 break;
107 case 5:
108 mtspr(SPRN_PMC6, val);
109 break;
110
111/* No PPC32 chip has more than 6, yet */
112#ifdef CONFIG_PPC64
113 case 6:
114 mtspr(SPRN_PMC7, val);
115 break;
116 case 7:
117 mtspr(SPRN_PMC8, val);
118 break;
119#endif
120 default:
121 break;
122 }
123}
124#endif /* !CONFIG_FSL_BOOKE */
125
126extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
127
128#endif /* __KERNEL__ */
129#endif /* _ASM_POWERPC_OPROFILE_IMPL_H */