From: Alex Deucher alexander.deucher@amd.com
Used for GPU clock counter snapshots.
Signed-off-by: Alex Deucher alexander.deucher@amd.com --- drivers/gpu/drm/radeon/cik.c | 21 +++++++++++++++++++++ drivers/gpu/drm/radeon/cikd.h | 4 +++- drivers/gpu/drm/radeon/radeon_asic.h | 5 +++++ 3 files changed, 29 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 228d399..d241cfd 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -5558,3 +5558,24 @@ 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; +} + diff --git a/drivers/gpu/drm/radeon/cikd.h b/drivers/gpu/drm/radeon/cikd.h index 3349e37..daa51ac 100644 --- a/drivers/gpu/drm/radeon/cikd.h +++ b/drivers/gpu/drm/radeon/cikd.h @@ -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 diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h index a72759e..248da72 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -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