drm/amdgpu: sdma handle ras resume (777ac3ba) · Commits · 戴 / test

During S3/S4 bootloader will re-init ras state behind us. Resume might fail or raise a gpu reset. Signed-off-by:

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

+18 −1

Original line number	Diff line number	Diff line
		@@ -1523,8 +1523,25 @@ static int sdma_v4_0_late_init(void *handle)
		}

		/* handle resume path. */
		if (*ras_if)
		if (*ras_if) {
		/* resend ras TA enable cmd during resume.
		* prepare to handle failure.
		*/
		ih_info.head = **ras_if;
		r = amdgpu_ras_feature_enable_on_boot(adev, *ras_if, 1);
		if (r) {
		if (r == -EAGAIN) {
		/* request a gpu reset. will run again. */
		amdgpu_ras_request_reset_on_boot(adev,
		AMDGPU_RAS_BLOCK__SDMA);
		return 0;
		}
		/* fail to enable ras, cleanup all. */
		goto irq;
		}
		/* enable successfully. continue. */
		goto resume;
		}

		ras_if = kmalloc(sizeof(*ras_if), GFP_KERNEL);
		if (!*ras_if)