From: Shashank Sharma <contactshashanksharma@xxxxxxxxx>
This patch initialzes the ttm resource manager for doorbells.
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Christian Koenig <christian.koenig@xxxxxxx>
Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 6f61491ef3dd..203d77a20507 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1858,6 +1858,14 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
DRM_INFO("amdgpu: %uM of GTT memory ready.\n",
(unsigned)(gtt_size / (1024 * 1024)));
+ /* Initiailize doorbell pool on PCI BAR */
+ r = amdgpu_ttm_init_on_chip(adev, AMDGPU_PL_DOORBELL,
+ DIV_ROUND_UP(adev->doorbell.size, PAGE_SIZE));
+ if (r) {
+ DRM_ERROR("Failed initializing doorbell heap. \n");
+ return r;
+ }
+
/* Initialize preemptible memory pool */
r = amdgpu_preempt_mgr_init(adev);
if (r) {
--
2.40.0
