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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: sa11x0_gpio.h,v 1.5 2005/04/08 21:50:37 uwe Exp $ */
/*	$wasabi$	*/

/*
 * Copyright 2003 Wasabi Systems, Inc.
 * All rights reserved.
 *
 * Written by Steve C. Woodford for Wasabi Systems, Inc.
 *
 * 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 for the NetBSD Project by
 *      Wasabi Systems, Inc.
 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
 * 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.
 */

#ifndef _SA11X0_GPIO_H
#define _SA11X0_GPIO_H

/*
 * If you want to fiddle with GPIO registers before the
 * driver has been autoconfigured (e.g. from initarm()),
 * call this function with the virtual address of the
 * GPIO controller's registers
 */
void sa11x0_gpio_bootstrap(vaddr_t);

/* GPIO pin function query/manipulation functions */
#define	SAGPIO_FUNC_GPIO	0x00
#define	SAGPIO_FUNC_ALT	0x01
u_int sa11x0_gpio_get_function(u_int);
u_int sa11x0_gpio_set_function(u_int, u_int);

/* level */
#define SAGPIO_LEVEL_LOW	0x00
#define SAGPIO_LEVEL_HIGH	0x01
int sa11x0_gpio_get_bit(u_int gpio);
void sa11x0_gpio_set_bit(u_int gpio);
void sa11x0_gpio_clear_bit(u_int gpio);

/* direction */
#define SAGPIO_DIR_INPUT	0x00
#define SAGPIO_DIR_OUTPUT	0x01
void sa11x0_gpio_set_dir(u_int gpio, int dir);
u_int sa11x0_get_dir(u_int gpio);

/* clear edge detect */
void sa11x0_gpio_clear_intr(u_int gpio);

/*
 * Establish/Disestablish interrupt handlers for GPIO pins
 */
void *sa11x0_gpio_intr_establish(u_int, int, int, int (*)(void *), void *,
    char *);
void sa11x0_gpio_intr_disestablish(void *);
const char *sa11x0_gpio_intr_string(void *);
void sa11x0_gpio_intr_mask(void *);
void sa11x0_gpio_intr_unmask(void *);

#endif /* _SA11X0_GPIO_H */