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. */
19 struct 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. */
30 struct 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 */
47 struct 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
63 extern struct op_powerpc_model op_model_fsl_emb;
64 extern struct op_powerpc_model op_model_power4;
65 extern struct op_powerpc_model op_model_7450;
66 extern struct op_powerpc_model op_model_cell;
67 extern struct op_powerpc_model op_model_pa6t;
68
69
70 /* All the classic PPC parts use these */
classic_ctr_read(unsigned int i)71 static inline unsigned int classic_ctr_read(unsigned int i)
72 {
73 switch(i) {
74 case 0:
75 return mfspr(SPRN_PMC1);
76 case 1:
77 return mfspr(SPRN_PMC2);
78 case 2:
79 return mfspr(SPRN_PMC3);
80 case 3:
81 return mfspr(SPRN_PMC4);
82 case 4:
83 return mfspr(SPRN_PMC5);
84 case 5:
85 return mfspr(SPRN_PMC6);
86
87 /* No PPC32 chip has more than 6 so far */
88 #ifdef CONFIG_PPC64
89 case 6:
90 return mfspr(SPRN_PMC7);
91 case 7:
92 return mfspr(SPRN_PMC8);
93 #endif
94 default:
95 return 0;
96 }
97 }
98
classic_ctr_write(unsigned int i,unsigned int val)99 static inline void classic_ctr_write(unsigned int i, unsigned int val)
100 {
101 switch(i) {
102 case 0:
103 mtspr(SPRN_PMC1, val);
104 break;
105 case 1:
106 mtspr(SPRN_PMC2, val);
107 break;
108 case 2:
109 mtspr(SPRN_PMC3, val);
110 break;
111 case 3:
112 mtspr(SPRN_PMC4, val);
113 break;
114 case 4:
115 mtspr(SPRN_PMC5, val);
116 break;
117 case 5:
118 mtspr(SPRN_PMC6, val);
119 break;
120
121 /* No PPC32 chip has more than 6, yet */
122 #ifdef CONFIG_PPC64
123 case 6:
124 mtspr(SPRN_PMC7, val);
125 break;
126 case 7:
127 mtspr(SPRN_PMC8, val);
128 break;
129 #endif
130 default:
131 break;
132 }
133 }
134
135
136 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
137
138 #endif /* __KERNEL__ */
139 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */
140