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isa_machdep.c revision 1.3 
      1 /* $NetBSD: isa_machdep.c,v 1.3 2007/11/05 15:49:03 garbled Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Tim Rightnour
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.3 2007/11/05 15:49:03 garbled Exp $");
     41 
     42 #include <sys/param.h>
     43 
     44 #include <machine/bus.h>
     45 #include <machine/pio.h>
     46 
     47 #include <dev/isa/isavar.h>
     48 #include <dev/isa/isareg.h>
     49 
     50 struct powerpc_isa_chipset genppc_ict;
     51 static u_int32_t ofppc_isa_iobase;
     52 
     53 /*
     54  * isa_inb and isa_outb are pretty much used to access the 8259's.  This isn't
     55  * ideal, but, whatever.  Because of this, this is an ultra-stripped down
     56  * version of those funcitons, just to satisfy the pic driver.
     57  * This is completely reliant on the fact that the region should be BAT mapped
     58  * in, and NOT mapped via bus_space_map.  If you bus_space_map a register
     59  * and then attempt to use isa_*b, you will lose.
     60  */
     61 
     62 int
     63 map_isa_ioregs(u_int32_t addr)
     64 {
     65 	if (addr) {
     66 		ofppc_isa_iobase = addr;
     67 		return 1;
     68 	}
     69 	return 0;
     70 }
     71 
     72 uint8_t
     73 isa_inb(uint32_t addr)
     74 {
     75 	return(inb(ofppc_isa_iobase | addr));
     76 }
     77 
     78 void
     79 isa_outb(uint32_t addr, uint8_t val)
     80 {
     81 	outb(ofppc_isa_iobase | addr, val);
     82 }
     83