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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: tcdsvar.h,v 1.3 2006/03/13 22:36:06 miod Exp $ */
/* $NetBSD: tcdsvar.h,v 1.2 2001/08/22 05:00:27 nisimura Exp $ */

/*
 * Copyright (c) 1995, 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.
 */

struct tcds_slotconfig {
	/*
	 * Bookkeeping information
	 */
	int	sc_slot;

	bus_space_tag_t sc_bst;			/* to frob TCDS regs */
	bus_space_handle_t sc_bsh;

	int	(*sc_intrhand)(void *);		/* intr. handler */
	void	*sc_intrarg;			/* intr. handler arg. */
	struct evcount sc_count;		/* intr. count */

	/*
	 * Sets of bits in TCDS CIR and IMER that enable/check
	 * various things.
	 */
	u_int32_t sc_resetbits;
	u_int32_t sc_intrmaskbits;
	u_int32_t sc_intrbits;
	u_int32_t sc_dmabits;
	u_int32_t sc_errorbits;

	/*
	 * Offsets to slot-specific DMA resources.
	 */
	bus_size_t sc_sda;
	bus_size_t sc_dic;
	bus_size_t sc_dud0;
	bus_size_t sc_dud1;
};

struct tcdsdev_attach_args {
	bus_space_tag_t tcdsda_bst;		/* bus space tag */
	bus_space_handle_t tcdsda_bsh;		/* bus space handle */
	bus_dma_tag_t tcdsda_dmat;		/* bus dma tag */
	struct tcds_slotconfig *tcdsda_sc;	/* slot configuration */
	int	tcdsda_chip;			/* chip number */
	int	tcdsda_id;			/* SCSI ID */
	u_int	tcdsda_freq;			/* chip frequency */
	int	tcdsda_period;			/* min. sync period */
	int	tcdsda_variant;			/* NCR chip variant */
	int	tcdsda_fast;			/* chip does Fast mode */
};

/*
 * TCDS functions.
 */
void	tcds_intr_establish(struct device *, int,
	    int (*)(void *), void *);
void	tcds_intr_disestablish(struct device *, int);
void	tcds_dma_enable(struct tcds_slotconfig *, int);
void	tcds_scsi_enable(struct tcds_slotconfig *, int);
int	tcds_scsi_iserr(struct tcds_slotconfig *);
int	tcds_scsi_isintr(struct tcds_slotconfig *, int);
void	tcds_scsi_reset(struct tcds_slotconfig *);