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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: vsbus.h,v 1.9 2006/12/13 21:11:23 miod Exp $ */
/*	$NetBSD: vsbus.h,v 1.13 2000/06/25 16:00:46 ragge Exp $ */
/*
 * Copyright (c) 1996 Ludd, University of Lule}, Sweden.
 * All rights reserved.
 *
 * This code is derived from software contributed to Ludd by Bertram Barth.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed at Ludd, University of 
 *      Lule}, Sweden and its contributors.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Generic definitions for the (virtual) vsbus. contains common info
 * used by all VAXstations.
 */

#ifndef _VAX_VSBUS_H_
#define _VAX_VSBUS_H_

#include <machine/bus.h>
#include <machine/sgmap.h>

struct	vsbus_attach_args {
	vaddr_t	va_addr;		/* virtual CSR address */
	paddr_t	va_paddr;		/* physical CSR address */

	short	va_br;			/* Interrupt level */
	int	va_cvec;		/* Interrupt vector address */
	u_char	va_maskno;		/* Interrupt vector in mask */
	vaddr_t	va_dmaaddr;		/* DMA area address */
	vsize_t	va_dmasize;		/* DMA area size */
	bus_space_tag_t va_iot;
	bus_dma_tag_t va_dmat;
};

/*
 * Some chip addresses and constants, same on all VAXstations.
 */
#define VS_CFGTST	0x20020000      /* config register */
#define VS_REGS         0x20080000      /* Misc cpu internal regs */
#define NI_ADDR         0x20090000      /* Ethernet address */
#define DZ_CSR          0x200a0000      /* DZ11-compatible chip csr */
#define VS_CLOCK        0x200b0000      /* clock chip address */
#define SCA_REGS        0x200c0000      /* disk device addresses */
#define NI_BASE         0x200e0000      /* LANCE CSRs */
#define NI_IOSIZE       (128 * VAX_NBPG)    /* IO address size */

#define	KA49_SCSIMAP	0x27000000	/* KA49 SCSI SGMAP */
/*
 * Small monochrome graphics framebuffer, present on all machines.
 */
#define	SMADDR		0x30000000
#define	SMSIZE		0x20000		/* Actually 256k, only 128k used */

struct	vsbus_softc {
	struct	device sc_dev;
	u_char	*sc_intmsk;	/* Mask register */
	u_char	*sc_intclr;	/* Clear interrupt register */
	u_char	*sc_intreq;	/* Interrupt request register */
	u_char	sc_mask;	/* Interrupts to enable after autoconf */
	vaddr_t	sc_vsregs;	/* Where the VS_REGS are mapped */
	vaddr_t sc_dmaaddr;	/* Mass storage virtual DMA area */
	vsize_t sc_dmasize;	/* Size of the DMA area */

	struct vax_bus_dma_tag sc_dmatag;
	struct vax_sgmap sc_sgmap;
};

struct vsbus_dma {
	SIMPLEQ_ENTRY(vsbus_dma) vd_q;
	void (*vd_go)(void *);
	void *vd_arg;
};

#ifdef _KERNEL
void	vsbus_dma_init(struct vsbus_softc *, unsigned ptecnt);
u_char	vsbus_setmask(int);
void	vsbus_clrintr(int);
void	vsbus_copytoproc(struct proc *, caddr_t, caddr_t, int);
void	vsbus_copyfromproc(struct proc *, caddr_t, caddr_t, int);
void	vsbus_dma_start(struct vsbus_dma *);
void	vsbus_dma_intr(void);
#endif
#endif /* _VAX_VSBUS_H_ */