From: Alex Deucher <alexander.deucher@xxxxxxx>
Used for GPU clock counter snapshots.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
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
--
1.7.7.5
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