drm/amdgpu: add vm ioctl

It will be used for reserving vmid for shader debugging
that requires a fixed vmid.

v2: fix warning (Alex)

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 8ecf82c5fe74..e4e2bacdb230 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2322,3 +2322,19 @@ void amdgpu_vm_manager_fini(struct amdgpu_device *adev)
                 }
         }
 }
+
+int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+{
+        union drm_amdgpu_vm *args = data;
+
+        switch (args->in.op) {
+        case AMDGPU_VM_OP_RESERVE_VMID:
+        case AMDGPU_VM_OP_UNRESERVE_VMID:
+                return -EINVAL;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}