ac_qhead_t
static void amr_complete(void *context, ac_qhead_t *head);
ac_qhead_t head;
ac_qhead_t head;
amr_complete(void *context, ac_qhead_t *head)
ac_qhead_t amr_ready; /* commands ready to be submitted */
ac_qhead_t amr_freecmds;
amr_init_qhead(ac_qhead_t *head)
amr_enqueue_completed(struct amr_command *ac, ac_qhead_t *head)
amr_dequeue_completed(struct amr_softc *sc, ac_qhead_t *head)