1/*
2 * Intel 8237 DMA Controller
3 *
4 * $FreeBSD$
5 */
6
7#define	DMA37MD_SINGLE	0x40	/* single pass mode */
8#define	DMA37MD_CASCADE	0xc0	/* cascade mode */
9#define	DMA37MD_AUTO	0x50	/* autoinitialise single pass mode */
10#define	DMA37MD_WRITE	0x04	/* read the device, write memory operation */
11#define	DMA37MD_READ	0x08	/* write the device, read memory operation */
12