Needed to flush and invalidate the HDP block using the CPU.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Samuel Li <Samuel.Li at amd.com>
---
drivers/gpu/drm/amd/amdgpu/cik.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c
index 8e59e65efd44..204ce807372c 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik.c
@@ -1715,6 +1715,18 @@ static void cik_detect_hw_virtualization(struct amdgpu_device *adev)
adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
}
+static void cik_flush_hdp(struct amdgpu_device *adev)
+{
+ WREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL, 1);
+ RREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL);
+}
+
+static void cik_invalidate_hdp(struct amdgpu_device *adev)
+{
+ WREG32(mmHDP_DEBUG0, 1);
+ RREG32(mmHDP_DEBUG0);
+}
+
static const struct amdgpu_asic_funcs cik_asic_funcs =
{
.read_disabled_bios = &cik_read_disabled_bios,
@@ -1726,6 +1738,8 @@ static const struct amdgpu_asic_funcs cik_asic_funcs =
.set_uvd_clocks = &cik_set_uvd_clocks,
.set_vce_clocks = &cik_set_vce_clocks,
.get_config_memsize = &cik_get_config_memsize,
+ .flush_hdp = &cik_flush_hdp,
+ .invalidate_hdp = &cik_invalidate_hdp,
};
static int cik_common_early_init(void *handle)
--
2.13.6
