1/* $NetBSD: isa_machdep.c,v 1.5 2008/04/28 20:23:30 martin 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.5 2008/04/28 20:23:30 martin Exp $");
34
35#include <sys/param.h>
36
37#include <sys/bus.h>
38#include <machine/pio.h>
39
40#include <sys/extent.h>
41
42#include <dev/isa/isavar.h>
43#include <dev/isa/isareg.h>
44
45#define IO_ELCR1        0x4d0
46#define IO_ELCR2        0x4d1
47
48struct powerpc_isa_chipset genppc_ict;
49bus_space_handle_t io_icu1h, io_icu2h, io_elcrh;
50
51/*
52 * These functions can *ONLY* be used to talk to the i8259.  Leave them
53 * alone.  I know they are greusome.
54 */
55
56int
57map_isa_ioregs(void)
58{
59	int err, noerr;
60
61	err = bus_space_map(&genppc_isa_io_space_tag, IO_ICU1, 2, 0,
62	    &io_icu1h);
63	if (err != 0)
64		panic("Can't map IO_ICU1 error %d\n", err);
65
66	err = bus_space_map(&genppc_isa_io_space_tag, IO_ICU2, 2, 0,
67	    &io_icu2h);
68	if (err != 0)
69		panic("Can't map IO_ICU2 error %d\n", err);
70
71	noerr = bus_space_map(&genppc_isa_io_space_tag, IO_ELCR1, 2, 0,
72	    &io_elcrh);
73	if (noerr != 0)
74		aprint_error("Can't map IO_ELCR error %d\n", noerr);
75
76	return err;
77}
78
79uint8_t
80isa_inb(uint32_t addr)
81{
82	if (addr == IO_ICU1 || addr == IO_ICU1+1)
83		return bus_space_read_1(&genppc_isa_io_space_tag, io_icu1h,
84		    addr-IO_ICU1);
85	if (addr == IO_ICU2 || addr == IO_ICU2+1)
86		return bus_space_read_1(&genppc_isa_io_space_tag, io_icu2h,
87		    addr-IO_ICU2);
88	if (addr == IO_ELCR1 || addr == IO_ELCR2)
89		return bus_space_read_1(&genppc_isa_io_space_tag, io_elcrh,
90		    addr-IO_ELCR1);
91	return 0;
92}
93
94void
95isa_outb(uint32_t addr, uint8_t val)
96{
97	if (addr == IO_ICU1 || addr == IO_ICU1+1)
98		bus_space_write_1(&genppc_isa_io_space_tag, io_icu1h,
99		    addr-IO_ICU1, val);
100	if (addr == IO_ICU2 || addr == IO_ICU2+1)
101		bus_space_write_1(&genppc_isa_io_space_tag, io_icu2h,
102		    addr-IO_ICU2, val);
103	if (addr == IO_ELCR1 || addr == IO_ELCR2)
104		bus_space_write_1(&genppc_isa_io_space_tag, io_elcrh,
105		    addr-IO_ELCR1, val);
106}
107