KFD_MMAP_TYPE_DOORBELL 297 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c args->doorbell_offset = KFD_MMAP_TYPE_DOORBELL; KFD_MMAP_TYPE_DOORBELL 1915 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c case KFD_MMAP_TYPE_DOORBELL: