NetBSD/sys/dev/ic/i8237reg.h

/*	$NetBSD: i8237reg.h,v 1.8 2005/12/11 12:21:26 christos Exp $	*/

/*
 * Intel 8237 DMA Controller
 */

#define	DMA37MD_WRITE	0x04	/* read the device, write memory operation */
#define	DMA37MD_READ	0x08	/* write the device, read memory operation */
#define	DMA37MD_LOOP	0x10	/* auto-initialize mode */
#define	DMA37MD_DEMAND	0x00	/* demand mode */
#define	DMA37MD_SINGLE	0x40	/* single mode */
#define	DMA37MD_BLOCK	0x80	/* block mode */
#define	DMA37MD_CASCADE	0xc0	/* cascade mode */

#define	DMA37SM_CLEAR	0x00	/* clear mask bit */
#define	DMA37SM_SET	0x04	/* set mask bit */
merge ktrace-lwp. 2005-12-11 15:16:03 +03:00			`/* $NetBSD: i8237reg.h,v 1.8 2005/12/11 12:21:26 christos Exp $ */`
new RCS ID format. 1994-10-27 07:14:23 +03:00
initial import of 386bsd-0.1 sources 1993-03-21 12:45:37 +03:00			`/*`
			`* Intel 8237 DMA Controller`
			`*/`

			`#define DMA37MD_WRITE 0x04 /* read the device, write memory operation */`
			`#define DMA37MD_READ 0x08 /* write the device, read memory operation */`
Add bit definition for auto-initialize mode. 1996-03-02 01:27:09 +03:00			`#define DMA37MD_LOOP 0x10 /* auto-initialize mode */`
Add DMA37MD_DEMAND and DMA37MD_BLOCK. 1997-05-30 01:42:28 +04:00			`#define DMA37MD_DEMAND 0x00 /* demand mode */`
			`#define DMA37MD_SINGLE 0x40 /* single mode */`
			`#define DMA37MD_BLOCK 0x80 /* block mode */`
Add bit definition for auto-initialize mode. 1996-03-02 01:27:09 +03:00			`#define DMA37MD_CASCADE 0xc0 /* cascade mode */`
nuke trailing whitespace 2005-02-27 03:26:58 +03:00
New constants for setting and clearing masks. 1994-03-01 21:18:07 +03:00			`#define DMA37SM_CLEAR 0x00 /* clear mask bit */`
			`#define DMA37SM_SET 0x04 /* set mask bit */`