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drm/amdgpu: Add input fence to sync bo map/unmap

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This patch adds input fences to VM_IOCTL for buffer object.
The kernel will map/unmap the BO only when the fence is signaled.
The UAPI for the same has been approved here:
https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/392

V2: Bug fix (Arvind)
V3: Bug fix (Arvind)
V4: Rename UAPI objects as per UAPI review (Marek)
V5: Addressed review comemnts from Christian
     - function should return error.
     - Add 'TODO' comment
     - The input fence should be independent of the operation.
V6: Addressed review comemnts from Christian
    - Release the memory allocated by memdup_user().
V7: Addressed review comemnts from Christian
    - Drop the debug print and add "return r;" for the error handling.

V11: Rebase
v12: Fix 32-bit holes issue in sturct drm_amdgpu_gem_va.
v13: Fix deadlock issue.
v14: Fix merge conflict.
v15: Fix review comment by renaming syncobj handles.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arvind Yadav <arvind.yadav@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Arvind Yadav 2024-09-25 18:10:41 +02:00 • committed by Alex Deucher
parent 189ee986b0
commit 38c67ec9aa
2 changed files with 50 additions and 0 deletions
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4
include/uapi/drm/amdgpu_drm.h
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@ -884,6 +884,10 @@ struct drm_amdgpu_gem_va {
* at vm_timeline_point.
*/
__u32 vm_timeline_syncobj_out;
/** the number of syncobj handles in @input_fence_syncobj_handles */
__u32 num_syncobj_handles;
/** Array of sync object handle to wait for given input fences */
__u64 input_fence_syncobj_handles;
};
#define AMDGPU_HW_IP_GFX 0