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91f4da826c
Expose the command doorbell register to userspace on a per-hardware context basis, enabling applications to notify the firmware of pending commands via doorbell writes. Introduce DRM_IOCTL_AMDXDNA_WAIT_CMD to allow userspace to wait for completion of individual commands. Co-developed-by: Hayden Laccabue <Hayden.Laccabue@amd.com> Signed-off-by: Hayden Laccabue <Hayden.Laccabue@amd.com> Signed-off-by: David Zhang <yidong.zhang@amd.com> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com> Link: https://patch.msgid.link/20260505160936.3917732-5-lizhi.hou@amd.com