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1474855d BN |
1 | /* |
2 | * Cell Broadband Engine OProfile Support | |
3 | * | |
4 | * (C) Copyright IBM Corporation 2006 | |
5 | * | |
6 | * Author: Maynard Johnson <maynardj@us.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the License, or (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #ifndef PR_UTIL_H | |
15 | #define PR_UTIL_H | |
16 | ||
17 | #include <linux/cpumask.h> | |
18 | #include <linux/oprofile.h> | |
19 | #include <asm/cell-pmu.h> | |
eef686a0 | 20 | #include <asm/cell-regs.h> |
1474855d BN |
21 | #include <asm/spu.h> |
22 | ||
1474855d BN |
23 | /* Defines used for sync_start */ |
24 | #define SKIP_GENERIC_SYNC 0 | |
25 | #define SYNC_START_ERROR -1 | |
26 | #define DO_GENERIC_SYNC 1 | |
a5598ca0 CL |
27 | #define SPUS_PER_NODE 8 |
28 | #define DEFAULT_TIMER_EXPIRE (HZ / 10) | |
29 | ||
30 | extern struct delayed_work spu_work; | |
31 | extern int spu_prof_running; | |
1474855d | 32 | |
88382329 CL |
33 | #define TRACE_ARRAY_SIZE 1024 |
34 | ||
35 | extern spinlock_t oprof_spu_smpl_arry_lck; | |
36 | ||
1474855d BN |
37 | struct spu_overlay_info { /* map of sections within an SPU overlay */ |
38 | unsigned int vma; /* SPU virtual memory address from elf */ | |
39 | unsigned int size; /* size of section from elf */ | |
40 | unsigned int offset; /* offset of section into elf file */ | |
41 | unsigned int buf; | |
42 | }; | |
43 | ||
44 | struct vma_to_fileoffset_map { /* map of sections within an SPU program */ | |
45 | struct vma_to_fileoffset_map *next; /* list pointer */ | |
46 | unsigned int vma; /* SPU virtual memory address from elf */ | |
47 | unsigned int size; /* size of section from elf */ | |
48 | unsigned int offset; /* offset of section into elf file */ | |
49 | unsigned int guard_ptr; | |
50 | unsigned int guard_val; | |
51 | /* | |
52 | * The guard pointer is an entry in the _ovly_buf_table, | |
53 | * computed using ovly.buf as the index into the table. Since | |
54 | * ovly.buf values begin at '1' to reference the first (or 0th) | |
55 | * entry in the _ovly_buf_table, the computation subtracts 1 | |
56 | * from ovly.buf. | |
57 | * The guard value is stored in the _ovly_buf_table entry and | |
58 | * is an index (starting at 1) back to the _ovly_table entry | |
59 | * that is pointing at this _ovly_buf_table entry. So, for | |
60 | * example, for an overlay scenario with one overlay segment | |
61 | * and two overlay sections: | |
62 | * - Section 1 points to the first entry of the | |
63 | * _ovly_buf_table, which contains a guard value | |
64 | * of '1', referencing the first (index=0) entry of | |
65 | * _ovly_table. | |
66 | * - Section 2 points to the second entry of the | |
67 | * _ovly_buf_table, which contains a guard value | |
68 | * of '2', referencing the second (index=1) entry of | |
69 | * _ovly_table. | |
70 | */ | |
71 | ||
72 | }; | |
73 | ||
a5598ca0 CL |
74 | struct spu_buffer { |
75 | int last_guard_val; | |
76 | int ctx_sw_seen; | |
77 | unsigned long *buff; | |
78 | unsigned int head, tail; | |
79 | }; | |
80 | ||
81 | ||
1474855d BN |
82 | /* The three functions below are for maintaining and accessing |
83 | * the vma-to-fileoffset map. | |
84 | */ | |
85 | struct vma_to_fileoffset_map *create_vma_map(const struct spu *spu, | |
9b635642 | 86 | unsigned long objectid); |
1474855d BN |
87 | unsigned int vma_map_lookup(struct vma_to_fileoffset_map *map, |
88 | unsigned int vma, const struct spu *aSpu, | |
89 | int *grd_val); | |
90 | void vma_map_free(struct vma_to_fileoffset_map *map); | |
91 | ||
92 | /* | |
93 | * Entry point for SPU profiling. | |
94 | * cycles_reset is the SPU_CYCLES count value specified by the user. | |
95 | */ | |
014cef91 | 96 | int start_spu_profiling_cycles(unsigned int cycles_reset); |
88382329 | 97 | void start_spu_profiling_events(void); |
1474855d | 98 | |
014cef91 | 99 | void stop_spu_profiling_cycles(void); |
88382329 | 100 | void stop_spu_profiling_events(void); |
1474855d BN |
101 | |
102 | /* add the necessary profiling hooks */ | |
103 | int spu_sync_start(void); | |
104 | ||
105 | /* remove the hooks */ | |
106 | int spu_sync_stop(void); | |
107 | ||
108 | /* Record SPU program counter samples to the oprofile event buffer. */ | |
109 | void spu_sync_buffer(int spu_num, unsigned int *samples, | |
110 | int num_samples); | |
111 | ||
112 | void set_spu_profiling_frequency(unsigned int freq_khz, unsigned int cycles_reset); | |
113 | ||
114 | #endif /* PR_UTIL_H */ |