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.Yang@xxxxxxx>
Reviewed-by: Felix Kuehling <felix.kuehling@xxxxxxx>
---
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 4c8308b2878b..56507ae919b0 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
@@ -973,10 +973,12 @@ 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 */
--
2.47.1
