Googler | 9398cc3 | 2022-12-02 17:21:52 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
Googler | af606d2 | 2022-10-26 21:40:12 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM |
| 4 | * |
| 5 | * Based on alpha version. |
Googler | af606d2 | 2022-10-26 21:40:12 -0700 | [diff] [blame] | 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 */ |
| 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 | |
| 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 */ |