From: Philip Yang <philip.y...@amd.com>
[ Upstream commit b4b7271e5ca95b581f2fcc4ae852c4079215e92d ]
The sdma context empty interrupt is dropped in amdgpu_irq_dispatch
as unregistered interrupt src_id 243, this interrupt accounts to 1/3 of
total interrupts and causes IH primary ring overflow when running
stressful benchmark application. Disable this interrupt has no side
effect found.
Signed-off-by: Philip Yang <philip.y...@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
index c77889040760a..4dd86c682ee6a 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
@@ -953,10 +953,12 @@ static int sdma_v4_4_2_inst_start(struct amdgpu_device
*adev,
/* set utc l1 enable flag always to 1 */
temp = RREG32_SDMA(i, regSDMA_CNTL);
temp = REG_SET_FIELD(temp, SDMA_CNTL, UTC_L1_ENABLE, 1);
- /* enable context empty interrupt during initialization */
- temp = REG_SET_FIELD(temp, SDMA_CNTL, CTXEMPTY_INT_ENABLE, 1);
- WREG32_SDMA(i, regSDMA_CNTL, temp);
+ if (amdgpu_ip_version(adev, SDMA0_HWIP, 0) < IP_VERSION(4, 4,
5)) {
+ /* enable context empty interrupt during initialization
*/
+ temp = REG_SET_FIELD(temp, SDMA_CNTL,
CTXEMPTY_INT_ENABLE, 1);
+ WREG32_SDMA(i, regSDMA_CNTL, temp);
+ }
if (!amdgpu_sriov_vf(adev)) {
if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
/* unhalt engine */
--
2.39.5
