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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: lca_bus_io.c,v 1.5 2001/11/06 19:53:13 miod Exp $	*/
/* $NetBSD: lca_bus_io.c,v 1.8 1997/09/02 13:19:31 thorpej Exp $ */

/*
 * Copyright (c) 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/syslog.h>
#include <sys/device.h>

#include <uvm/uvm_extern.h>

#include <machine/bus.h>

#include <alpha/pci/lcareg.h>
#include <alpha/pci/lcavar.h>

#define	CHIP		lca

#define	CHIP_EX_MALLOC_SAFE(v)	(((struct lca_config *)(v))->lc_mallocsafe)
#define	CHIP_IO_EXTENT(v)	(((struct lca_config *)(v))->lc_io_ex)

/* IO region 1 */
#define	CHIP_IO_W1_BUS_START(v)	0x00000000UL
#define	CHIP_IO_W1_BUS_END(v)	0x00ffffffUL
#define	CHIP_IO_W1_SYS_START(v)	LCA_PCI_SIO
#define	CHIP_IO_W1_SYS_END(v)	(LCA_PCI_SIO + ((0x00ffffffUL + 1) << 5) - 1)

#include <alpha/pci/pci_swiz_bus_io_chipdep.c>