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110 lines
3.3 KiB
110 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Cell Broadband Engine OProfile Support |
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* |
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* (C) Copyright IBM Corporation 2006 |
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* |
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* Author: Maynard Johnson <[email protected]> |
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*/ |
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#ifndef PR_UTIL_H |
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#define PR_UTIL_H |
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#include <linux/cpumask.h> |
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#include <linux/oprofile.h> |
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#include <asm/cell-pmu.h> |
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#include <asm/cell-regs.h> |
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#include <asm/spu.h> |
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/* Defines used for sync_start */ |
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#define SKIP_GENERIC_SYNC 0 |
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#define SYNC_START_ERROR -1 |
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#define DO_GENERIC_SYNC 1 |
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#define SPUS_PER_NODE 8 |
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#define DEFAULT_TIMER_EXPIRE (HZ / 10) |
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extern struct delayed_work spu_work; |
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extern int spu_prof_running; |
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#define TRACE_ARRAY_SIZE 1024 |
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extern spinlock_t oprof_spu_smpl_arry_lck; |
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struct spu_overlay_info { /* map of sections within an SPU overlay */ |
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unsigned int vma; /* SPU virtual memory address from elf */ |
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unsigned int size; /* size of section from elf */ |
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unsigned int offset; /* offset of section into elf file */ |
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unsigned int buf; |
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}; |
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struct vma_to_fileoffset_map { /* map of sections within an SPU program */ |
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struct vma_to_fileoffset_map *next; /* list pointer */ |
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unsigned int vma; /* SPU virtual memory address from elf */ |
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unsigned int size; /* size of section from elf */ |
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unsigned int offset; /* offset of section into elf file */ |
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unsigned int guard_ptr; |
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unsigned int guard_val; |
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/* |
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* The guard pointer is an entry in the _ovly_buf_table, |
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* computed using ovly.buf as the index into the table. Since |
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* ovly.buf values begin at '1' to reference the first (or 0th) |
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* entry in the _ovly_buf_table, the computation subtracts 1 |
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* from ovly.buf. |
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* The guard value is stored in the _ovly_buf_table entry and |
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* is an index (starting at 1) back to the _ovly_table entry |
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* that is pointing at this _ovly_buf_table entry. So, for |
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* example, for an overlay scenario with one overlay segment |
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* and two overlay sections: |
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* - Section 1 points to the first entry of the |
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* _ovly_buf_table, which contains a guard value |
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* of '1', referencing the first (index=0) entry of |
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* _ovly_table. |
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* - Section 2 points to the second entry of the |
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* _ovly_buf_table, which contains a guard value |
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* of '2', referencing the second (index=1) entry of |
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* _ovly_table. |
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*/ |
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}; |
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struct spu_buffer { |
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int last_guard_val; |
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int ctx_sw_seen; |
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unsigned long *buff; |
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unsigned int head, tail; |
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}; |
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/* The three functions below are for maintaining and accessing |
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* the vma-to-fileoffset map. |
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*/ |
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struct vma_to_fileoffset_map *create_vma_map(const struct spu *spu, |
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unsigned long objectid); |
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unsigned int vma_map_lookup(struct vma_to_fileoffset_map *map, |
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unsigned int vma, const struct spu *aSpu, |
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int *grd_val); |
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void vma_map_free(struct vma_to_fileoffset_map *map); |
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/* |
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* Entry point for SPU profiling. |
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* cycles_reset is the SPU_CYCLES count value specified by the user. |
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*/ |
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int start_spu_profiling_cycles(unsigned int cycles_reset); |
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void start_spu_profiling_events(void); |
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void stop_spu_profiling_cycles(void); |
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void stop_spu_profiling_events(void); |
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/* add the necessary profiling hooks */ |
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int spu_sync_start(void); |
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/* remove the hooks */ |
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int spu_sync_stop(void); |
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/* Record SPU program counter samples to the oprofile event buffer. */ |
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void spu_sync_buffer(int spu_num, unsigned int *samples, |
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int num_samples); |
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void set_spu_profiling_frequency(unsigned int freq_khz, unsigned int cycles_reset); |
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#endif /* PR_UTIL_H */
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