[BACK]Return to i8237reg.h CVS log [TXT][DIR] Up to [local] / sys / dev / ic

File: [local] / sys / dev / ic / i8237reg.h (download)

Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:10:37 2008 UTC (16 years, 2 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD
Changes since 1.1: +0 -0 lines

Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

/*	$OpenBSD: i8237reg.h,v 1.3 1999/08/04 23:07:49 niklas Exp $	*/
/*	$NetBSD: i8237reg.h,v 1.5 1996/03/01 22:27:09 mycroft Exp $	*/

/*
 * Intel 8237 DMA Controller
 */

#define	DMA37MD_DEMAND	0x00	/* demand mode */
#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_SINGLE	0x40	/* single pass mode */
#define	DMA37MD_CASCADE	0xc0	/* cascade mode */
	
#define	DMA37SM_CLEAR	0x00	/* clear mask bit */
#define	DMA37SM_SET	0x04	/* set mask bit */