1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
4 *
5 * Based on alpha version.
6 */
7
8 #ifndef _ASM_POWERPC_OPROFILE_IMPL_H
9 #define _ASM_POWERPC_OPROFILE_IMPL_H
10 #ifdef __KERNEL__
11
12 #define OP_MAX_COUNTER 8
13
14 /* Per-counter configuration as set via oprofilefs. */
15 struct op_counter_config {
16 unsigned long enabled;
17 unsigned long event;
18 unsigned long count;
19 /* Classic doesn't support per-counter user/kernel selection */
20 unsigned long kernel;
21 unsigned long user;
22 unsigned long unit_mask;
23 };
24
25 /* System-wide configuration as set via oprofilefs. */
26 struct op_system_config {
27 #ifdef CONFIG_PPC64
28 unsigned long mmcr0;
29 unsigned long mmcr1;
30 unsigned long mmcra;
31 #ifdef CONFIG_OPROFILE_CELL
32 /* Register for oprofile user tool to check cell kernel profiling
33 * support.
34 */
35 unsigned long cell_support;
36 #endif
37 #endif
38 unsigned long enable_kernel;
39 unsigned long enable_user;
40 };
41
42 /* Per-arch configuration */
43 struct op_powerpc_model {
44 int (*reg_setup) (struct op_counter_config *,
45 struct op_system_config *,
46 int num_counters);
47 int (*cpu_setup) (struct op_counter_config *);
48 int (*start) (struct op_counter_config *);
49 int (*global_start) (struct op_counter_config *);
50 void (*stop) (void);
51 void (*global_stop) (void);
52 int (*sync_start)(void);
53 int (*sync_stop)(void);
54 void (*handle_interrupt) (struct pt_regs *,
55 struct op_counter_config *);
56 int num_counters;
57 };
58
59 extern struct op_powerpc_model op_model_fsl_emb;
60 extern struct op_powerpc_model op_model_power4;
61 extern struct op_powerpc_model op_model_7450;
62 extern struct op_powerpc_model op_model_cell;
63 extern struct op_powerpc_model op_model_pa6t;
64
65
66 /* All the classic PPC parts use these */
classic_ctr_read(unsigned int i)67 static inline unsigned int classic_ctr_read(unsigned int i)
68 {
69 switch(i) {
70 case 0:
71 return mfspr(SPRN_PMC1);
72 case 1:
73 return mfspr(SPRN_PMC2);
74 case 2:
75 return mfspr(SPRN_PMC3);
76 case 3:
77 return mfspr(SPRN_PMC4);
78 case 4:
79 return mfspr(SPRN_PMC5);
80 case 5:
81 return mfspr(SPRN_PMC6);
82
83 /* No PPC32 chip has more than 6 so far */
84 #ifdef CONFIG_PPC64
85 case 6:
86 return mfspr(SPRN_PMC7);
87 case 7:
88 return mfspr(SPRN_PMC8);
89 #endif
90 default:
91 return 0;
92 }
93 }
94
classic_ctr_write(unsigned int i,unsigned int val)95 static inline void classic_ctr_write(unsigned int i, unsigned int val)
96 {
97 switch(i) {
98 case 0:
99 mtspr(SPRN_PMC1, val);
100 break;
101 case 1:
102 mtspr(SPRN_PMC2, val);
103 break;
104 case 2:
105 mtspr(SPRN_PMC3, val);
106 break;
107 case 3:
108 mtspr(SPRN_PMC4, val);
109 break;
110 case 4:
111 mtspr(SPRN_PMC5, val);
112 break;
113 case 5:
114 mtspr(SPRN_PMC6, val);
115 break;
116
117 /* No PPC32 chip has more than 6, yet */
118 #ifdef CONFIG_PPC64
119 case 6:
120 mtspr(SPRN_PMC7, val);
121 break;
122 case 7:
123 mtspr(SPRN_PMC8, val);
124 break;
125 #endif
126 default:
127 break;
128 }
129 }
130
131
132 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
133
134 #endif /* __KERNEL__ */
135 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */
136