tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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) (struct op_counter_config *);
46 void (*start) (struct op_counter_config *);
47 void (*global_start) (struct op_counter_config *);
48 void (*stop) (void);
49 void (*global_stop) (void);
50 void (*handle_interrupt) (struct pt_regs *,
51 struct op_counter_config *);
52 int num_counters;
53};
54
55extern struct op_powerpc_model op_model_fsl_booke;
56extern struct op_powerpc_model op_model_rs64;
57extern struct op_powerpc_model op_model_power4;
58extern struct op_powerpc_model op_model_7450;
59extern struct op_powerpc_model op_model_cell;
60
61/* All the classic PPC parts use these */
62static inline unsigned int classic_ctr_read(unsigned int i)
63{
64 switch(i) {
65 case 0:
66 return mfspr(SPRN_PMC1);
67 case 1:
68 return mfspr(SPRN_PMC2);
69 case 2:
70 return mfspr(SPRN_PMC3);
71 case 3:
72 return mfspr(SPRN_PMC4);
73 case 4:
74 return mfspr(SPRN_PMC5);
75 case 5:
76 return mfspr(SPRN_PMC6);
77
78/* No PPC32 chip has more than 6 so far */
79#ifdef CONFIG_PPC64
80 case 6:
81 return mfspr(SPRN_PMC7);
82 case 7:
83 return mfspr(SPRN_PMC8);
84#endif
85 default:
86 return 0;
87 }
88}
89
90static inline void classic_ctr_write(unsigned int i, unsigned int val)
91{
92 switch(i) {
93 case 0:
94 mtspr(SPRN_PMC1, val);
95 break;
96 case 1:
97 mtspr(SPRN_PMC2, val);
98 break;
99 case 2:
100 mtspr(SPRN_PMC3, val);
101 break;
102 case 3:
103 mtspr(SPRN_PMC4, val);
104 break;
105 case 4:
106 mtspr(SPRN_PMC5, val);
107 break;
108 case 5:
109 mtspr(SPRN_PMC6, val);
110 break;
111
112/* No PPC32 chip has more than 6, yet */
113#ifdef CONFIG_PPC64
114 case 6:
115 mtspr(SPRN_PMC7, val);
116 break;
117 case 7:
118 mtspr(SPRN_PMC8, val);
119 break;
120#endif
121 default:
122 break;
123 }
124}
125
126
127extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
128
129#endif /* __KERNEL__ */
130#endif /* _ASM_POWERPC_OPROFILE_IMPL_H */