[PATCH v2] drm/amdkfd: Map wptr BO to GART unconditionally

[Lang Yu]

For simulation C models that don't run CP FW where adev->mes.sched_version
is not populated correctly. This causes NULL dereference in
amdgpu_amdkfd_free_gtt_mem(dev->adev, (void **)&pqn->q->wptr_bo_gart)
and warning on unpinned BO in amdgpu_bo_gpu_offset(q->properties.wptr_bo).

Compared with adding version check here and there,
always map wptr BO to GART simplifies things.

v2: Add NULL check in amdgpu_amdkfd_free_gtt_mem.(Philip)

Signed-off-by: Lang Yu <lang...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c    |  3 +++
 .../amd/amdkfd/kfd_process_queue_manager.c    | 23 ++++++++-----------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index 4cec3a873995..d8ac4b1051a8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -368,6 +368,9 @@ void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, 
void **mem_obj)
 {
        struct amdgpu_bo **bo = (struct amdgpu_bo **) mem_obj;
 
+       if (!bo || !*bo)
+               return;
+
        (void)amdgpu_bo_reserve(*bo, true);
        amdgpu_bo_kunmap(*bo);
        amdgpu_bo_unpin(*bo);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index 6d5fa57d4a23..c643e0ccec52 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -279,20 +279,17 @@ static int init_user_queue(struct process_queue_manager 
*pqm,
                /* Starting with GFX11, wptr BOs must be mapped to GART for MES 
to determine work
                 * on unmapped queues for usermode queue oversubscription (no 
aggregated doorbell)
                 */
-               if (((dev->adev->mes.sched_version & 
AMDGPU_MES_API_VERSION_MASK)
-                   >> AMDGPU_MES_API_VERSION_SHIFT) >= 2) {
-                       if (dev->adev != 
amdgpu_ttm_adev(q_properties->wptr_bo->tbo.bdev)) {
-                               pr_err("Queue memory allocated to wrong 
device\n");
-                               retval = -EINVAL;
-                               goto free_gang_ctx_bo;
-                       }
+               if (dev->adev != 
amdgpu_ttm_adev(q_properties->wptr_bo->tbo.bdev)) {
+                       pr_err("Queue memory allocated to wrong device\n");
+                       retval = -EINVAL;
+                       goto free_gang_ctx_bo;
+               }
 
-                       retval = 
amdgpu_amdkfd_map_gtt_bo_to_gart(q_properties->wptr_bo,
-                                                                 
&(*q)->wptr_bo_gart);
-                       if (retval) {
-                               pr_err("Failed to map wptr bo to GART\n");
-                               goto free_gang_ctx_bo;
-                       }
+               retval = amdgpu_amdkfd_map_gtt_bo_to_gart(q_properties->wptr_bo,
+                                                         &(*q)->wptr_bo_gart);
+               if (retval) {
+                       pr_err("Failed to map wptr bo to GART\n");
+                       goto free_gang_ctx_bo;
                }
        }
 
-- 
2.34.1