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oprofile_impl.h
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1 /*
2  * Copyright (C) 2004 Anton Blanchard <[email protected]>, 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  * suport.
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_rs64;
65 extern struct op_powerpc_model op_model_power4;
66 extern struct op_powerpc_model op_model_7450;
67 extern struct op_powerpc_model op_model_cell;
68 extern struct op_powerpc_model op_model_pa6t;
69 
70 
71 /* All the classic PPC parts use these */
72 static 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 
100 static 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 
137 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
138 
139 #endif /* __KERNEL__ */
140 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */
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