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#ifdef CONFIG_OPROFILE_CELL
36 /* Register for oprofile user tool to check cell kernel profiling
37 * support.
38 */
39 unsigned long cell_support;
40#endif
41#endif
42 unsigned long enable_kernel;
43 unsigned long enable_user;
44};
45
46/* Per-arch configuration */
47struct op_powerpc_model {
48 int (*reg_setup) (struct op_counter_config *,
49 struct op_system_config *,
50 int num_counters);
51 int (*cpu_setup) (struct op_counter_config *);
52 int (*start) (struct op_counter_config *);
53 int (*global_start) (struct op_counter_config *);
54 void (*stop) (void);
55 void (*global_stop) (void);
56 int (*sync_start)(void);
57 int (*sync_stop)(void);
58 void (*handle_interrupt) (struct pt_regs *,
59 struct op_counter_config *);
60 int num_counters;
61};
62
63extern struct op_powerpc_model op_model_fsl_emb;
64extern struct op_powerpc_model op_model_rs64;
65extern struct op_powerpc_model op_model_power4;
66extern struct op_powerpc_model op_model_7450;
67extern struct op_powerpc_model op_model_cell;
68extern struct op_powerpc_model op_model_pa6t;
69
70
71/* All the classic PPC parts use these */
72static inline unsigned int classic_ctr_read(unsigned int i)
73{
74 switch(i) {
75 case 0:
76 return mfspr(SPRN_PMC1);
77 case 1:
78 return mfspr(SPRN_PMC2);
79 case 2:
80 return mfspr(SPRN_PMC3);
81 case 3:
82 return mfspr(SPRN_PMC4);
83 case 4:
84 return mfspr(SPRN_PMC5);
85 case 5:
86 return mfspr(SPRN_PMC6);
87
88/* No PPC32 chip has more than 6 so far */
89#ifdef CONFIG_PPC64
90 case 6:
91 return mfspr(SPRN_PMC7);
92 case 7:
93 return mfspr(SPRN_PMC8);
94#endif
95 default:
96 return 0;
97 }
98}
99
100static inline void classic_ctr_write(unsigned int i, unsigned int val)
101{
102 switch(i) {
103 case 0:
104 mtspr(SPRN_PMC1, val);
105 break;
106 case 1:
107 mtspr(SPRN_PMC2, val);
108 break;
109 case 2:
110 mtspr(SPRN_PMC3, val);
111 break;
112 case 3:
113 mtspr(SPRN_PMC4, val);
114 break;
115 case 4:
116 mtspr(SPRN_PMC5, val);
117 break;
118 case 5:
119 mtspr(SPRN_PMC6, val);
120 break;
121
122/* No PPC32 chip has more than 6, yet */
123#ifdef CONFIG_PPC64
124 case 6:
125 mtspr(SPRN_PMC7, val);
126 break;
127 case 7:
128 mtspr(SPRN_PMC8, val);
129 break;
130#endif
131 default:
132 break;
133 }
134}
135
136
137extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
138
139#endif /* __KERNEL__ */
140#endif /* _ASM_POWERPC_OPROFILE_IMPL_H */