/*      $OpenBSD: isa_machdep.h,v 1.2 1996/09/14 15:58:26 pefo Exp $  */

/*
 * Copyright (c) 1996 Per Fogelstrom
 * All rights reserved.
 *
 * 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 by Per Fogelstrom
 * 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.
 */
#ifndef _ISA_MACHDEP_H_
#define _ISA_MACHDEP_H_

typedef struct arc_isa_bus *isa_chipset_tag_t;

/*
 *      I/O macros to access isa bus ports/memory.
 *      At the first glance theese macros may seem inefficient.
 *      However, the cpu executes an instruction every 7.5ns
 *      so the bus is much slower so it doesn't matter, really.
 */
#define isa_outb(x,y)   outb(isa_io_base + (x), y)
#define isa_inb(x)      inb(isa_io_base + (x))
 
extern int isa_io_base;		/* Base address for ISA I/O space       */ 
extern int isa_mem_base;	/* Base address for ISA MEM space       */

struct arc_isa_bus {
        void    *ic_data;

        void    (*ic_attach_hook) __P((struct device *, struct device *,
                    struct isabus_attach_args *));
        void    *(*ic_intr_establish) __P((isa_chipset_tag_t, int, int, int,
                    int (*)(void *), void *, char *));
        void    (*ic_intr_disestablish) __P((isa_chipset_tag_t, void *));
};


/*
 * Functions provided to machine-independent ISA code.
 */
#define isa_attach_hook(p, s, a)                             /*           \
    (*(a)->iba_ic->ic_attach_hook)((p), (s), (a)) */
#define isa_intr_establish(c, i, t, l, f, a, w)                         \
    (*(c)->ic_intr_establish)((c)->ic_data, (i), (t), (l), (f), (a), (w))
#define isa_intr_disestablish(c, h)                                     \
    (*(c)->ic_intr_disestablish)((c)->ic_data, (h))

/*
 *	Interrupt control struct used to control the ICU setup.
 */

struct intrhand {
	struct	intrhand *ih_next;
	int	(*ih_fun) __P((void *));
	void    *ih_arg;
	u_long  ih_count;
	int     ih_level;
	int     ih_irq;
	char    *ih_what;
};

#endif /* _ISA_MACHDEP_H_ */