46 struct ahci_softc {  struct
47 	struct atac_softc sc_atac;
48 	bus_space_tag_t sc_ahcit; /* ahci registers mapping */
49 	bus_space_handle_t sc_ahcih;
50 	bus_size_t sc_ahcis;
51 	bus_dma_tag_t sc_dmat; /* DMA memory mappings: */
52 	void *sc_cmd_hdr; /* command tables and received FIS */
53 	bus_dmamap_t sc_cmd_hdrd;
54 	bus_dma_segment_t sc_cmd_hdr_seg;
55 	int sc_cmd_hdr_nseg;
56 	int sc_atac_capflags;
57 	int sc_ahci_quirks;
86 	void	(*sc_channel_start)(struct ahci_softc *, struct ata_channel *);  argument
87 	void	(*sc_channel_stop)(struct ahci_softc *, struct ata_channel *);  argument
88 	int	(*sc_intr_establish)(struct ahci_softc *, int);  argument
90 	bool sc_ghc_mrsm;
91 	bool sc_save_init_data;
92 	struct {
118 #define AHCI_CH2SC(chp)		(struct ahci_softc *)((chp)->ch_atac)  argument