bus_dmamap_load_mbuf_sg(9) on FreeBSD
The text d7178efd7cb0, as FreeBSD 14.3-RELEASE, FreeBSD 14.2-RELEASE, FreeBSD 14.1-RELEASE, FreeBSD 14.0-RELEASE, FreeBSD 13.5-RELEASE, FreeBSD 13.4-RELEASE, FreeBSD 13.3-RELEASE shipped it.
Bus and Machine Independent DMA Mapping Interface