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/si.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/si.c b/drivers/gpu/drm/amd/amdgpu/si.c
index 543101d5a5ed..f61a431b9553 100644
--- a/drivers/gpu/drm/amd/amdgpu/si.c
+++ b/drivers/gpu/drm/amd/amdgpu/si.c
@@ -1230,6 +1230,18 @@ static void si_detect_hw_virtualization(struct amdgpu_device *adev)
adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
}
+static void si_flush_hdp(struct amdgpu_device *adev)
+{
+ WREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL, 1);
+ RREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL);
+}
+
+static void si_invalidate_hdp(struct amdgpu_device *adev)
+{
+ WREG32(mmHDP_DEBUG0, 1);
+ RREG32(mmHDP_DEBUG0);
+}
+
static const struct amdgpu_asic_funcs si_asic_funcs =
{
.read_disabled_bios = &si_read_disabled_bios,
@@ -1241,6 +1253,8 @@ static const struct amdgpu_asic_funcs si_asic_funcs =
.set_uvd_clocks = &si_set_uvd_clocks,
.set_vce_clocks = NULL,
.get_config_memsize = &si_get_config_memsize,
+ .flush_hdp = &si_flush_hdp,
+ .invalidate_hdp = &si_invalidate_hdp,
};
static uint32_t si_get_rev_id(struct amdgpu_device *adev)
--
2.13.6
