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isa_machdep.h revision 1.1.1.2 
      1 /*      $OpenBSD: isa_machdep.h,v 1.5 1997/04/19 17:20:00 pefo Exp $  */
      2 
      3 /*
      4  * Copyright (c) 1996 Per Fogelstrom
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Per Fogelstrom
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 #ifndef _ISA_MACHDEP_H_
     33 #define _ISA_MACHDEP_H_
     34 
     35 typedef struct arc_isa_bus *isa_chipset_tag_t;
     36 
     37 /*
     38  *      I/O macros to access isa bus ports/memory.
     39  *      At the first glance theese macros may seem inefficient.
     40  *      However, the cpu executes an instruction every 7.5ns
     41  *      so the bus is much slower so it doesn't matter, really.
     42  */
     43 #define isa_outb(x,y)   outb(arc_bus_io.bus_base + (x), y)
     44 #define isa_inb(x)      inb(arc_bus_io.bus_base + (x))
     45 
     46 struct arc_isa_bus {
     47         void    *ic_data;
     48 
     49         void    (*ic_attach_hook) __P((struct device *, struct device *,
     50                     struct isabus_attach_args *));
     51         void    *(*ic_intr_establish) __P((isa_chipset_tag_t, int, int, int,
     52                     int (*)(void *), void *, char *));
     53         void    (*ic_intr_disestablish) __P((isa_chipset_tag_t, void *));
     54 };
     55 
     56 
     57 /*
     58  * Functions provided to machine-independent ISA code.
     59  */
     60 #define isa_attach_hook(p, s, a)                             /*           \
     61     (*(a)->iba_ic->ic_attach_hook)((p), (s), (a)) */
     62 #define isa_intr_establish(c, i, t, l, f, a, w)                         \
     63     (*(c)->ic_intr_establish)((c)->ic_data, (i), (t), (l), (f), (a), (w))
     64 #define isa_intr_disestablish(c, h)                                     \
     65     (*(c)->ic_intr_disestablish)((c)->ic_data, (h))
     66 
     67 void sysbeepstop __P((void *));
     68 void sysbeep __P((int, int));
     69 
     70 
     71 /*
     72  *	Interrupt control struct used to control the ICU setup.
     73  */
     74 
     75 struct intrhand {
     76 	struct	intrhand *ih_next;
     77 	int	(*ih_fun) __P((void *));
     78 	void    *ih_arg;
     79 	u_long  ih_count;
     80 	int     ih_level;
     81 	int     ih_irq;
     82 	char    *ih_what;
     83 };
     84 
     85 #endif /* _ISA_MACHDEP_H_ */
     86