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drm/radeon: add get_gpu_clock_counter() callback for cik

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Used for GPU clock counter snapshots.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2012-12-18 22:17:00 -05:00
parent 64f759cc6a
commit 44fa346f7a
3 changed files with 29 additions and 1 deletions
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21
drivers/gpu/drm/radeon/cik.c
View file

@ -5554,3 +5554,24 @@ void dce8_bandwidth_update(struct radeon_device *rdev)
dce8_program_watermarks(rdev, rdev->mode_info.crtcs[i], lb_size, num_heads);
}
}
/**
* cik_get_gpu_clock_counter - return GPU clock counter snapshot
*
* @rdev: radeon_device pointer
*
* Fetches a GPU clock counter snapshot (SI).
* Returns the 64 bit clock counter snapshot.
*/
uint64_t cik_get_gpu_clock_counter(struct radeon_device *rdev)
{
uint64_t clock;
mutex_lock(&rdev->gpu_clock_mutex);
WREG32(RLC_CAPTURE_GPU_CLOCK_COUNT, 1);
clock = (uint64_t)RREG32(RLC_GPU_CLOCK_COUNT_LSB) |
((uint64_t)RREG32(RLC_GPU_CLOCK_COUNT_MSB) << 32ULL);
mutex_unlock(&rdev->gpu_clock_mutex);
return clock;
}

4
drivers/gpu/drm/radeon/cikd.h
View file

@ -730,7 +730,9 @@
#define RLC_GPM_UCODE_ADDR 0xC388
#define RLC_GPM_UCODE_DATA 0xC38C
#define RLC_GPU_CLOCK_COUNT_LSB 0xC390
#define RLC_GPU_CLOCK_COUNT_MSB 0xC394
#define RLC_CAPTURE_GPU_CLOCK_COUNT 0xC398
#define RLC_UCODE_CNTL 0xC39C
#define RLC_CGCG_CGLS_CTRL 0xC424

5
drivers/gpu/drm/radeon/radeon_asic.h
View file

@ -553,4 +553,9 @@ u32 si_get_xclk(struct radeon_device *rdev);
uint64_t si_get_gpu_clock_counter(struct radeon_device *rdev);
int si_set_uvd_clocks(struct radeon_device *rdev, u32 vclk, u32 dclk);
/*
* cik
*/
uint64_t cik_get_gpu_clock_counter(struct radeon_device *rdev);
#endif