drm/amdgpu: add fence suspend/resume functions
Added to:
- handle draining the ring on suspend
- properly enable/disable interrupts on suspend and resume
Fix breakages from:
commit 467ee3be53d240d08beed2e82a941e820c1ac323
Author: Chunming Zhou <david1.zhou@amd.com>
Date: Mon Jun 1 14:14:32 2015 +0800
drm/amdgpu: always enable EOP interrupt v2
Tested-by: Audrey Grodzovsky <audrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 99f158e..a816580 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1627,8 +1627,7 @@
struct amdgpu_device *adev;
struct drm_crtc *crtc;
struct drm_connector *connector;
- int i, r;
- bool force_completion = false;
+ int r;
if (dev == NULL || dev->dev_private == NULL) {
return -ENODEV;
@@ -1667,21 +1666,7 @@
/* evict vram memory */
amdgpu_bo_evict_vram(adev);
- /* wait for gpu to finish processing current batch */
- for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
- struct amdgpu_ring *ring = adev->rings[i];
- if (!ring)
- continue;
-
- r = amdgpu_fence_wait_empty(ring);
- if (r) {
- /* delay GPU reset to resume */
- force_completion = true;
- }
- }
- if (force_completion) {
- amdgpu_fence_driver_force_completion(adev);
- }
+ amdgpu_fence_driver_suspend(adev);
r = amdgpu_suspend(adev);
@@ -1739,6 +1724,8 @@
r = amdgpu_resume(adev);
+ amdgpu_fence_driver_resume(adev);
+
r = amdgpu_ib_ring_tests(adev);
if (r)
DRM_ERROR("ib ring test failed (%d).\n", r);