pciide.c revision 1.3 
1/*	$NetBSD: pciide.c,v 1.3 2004/01/03 01:50:53 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 2003 The NetBSD Foundation, Inc.
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 the NetBSD
18 *        Foundation, Inc. and its contributors.
19 * 4. Neither the name of The NetBSD Foundation nor the names of its
20 *    contributors may be used to endorse or promote products derived
21 *    from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#include <sys/types.h>
37#include <lib/libsa/stand.h>
38#include <mips/cpuregs.h>
39
40#include "boot.h"
41#include "wdvar.h"
42
43int
44pciide_init(chp, unit)
45	struct wdc_channel *chp;
46	u_int *unit;
47{
48	u_long bpa, addr;
49	int compatchan = 0;
50
51	/*
52	 * two channels per chip, two drives per channel
53	 */
54	compatchan = *unit / PCIIDE_CHANNEL_NDEV;
55	if (compatchan >= PCIIDE_NUM_CHANNELS)
56		return (ENXIO);
57	*unit %= PCIIDE_CHANNEL_NDEV;
58
59	DPRINTF(("[pciide] unit: %d, channel: %d\n", *unit, compatchan));
60
61	/*
62	 * XXX map?
63	 */
64	bpa = PCIIDE_COMPAT_CMD_BASE(compatchan);
65	addr = MIPS_PHYS_TO_KSEG1(bpa);
66	if (bpa < 0x10000000)
67		addr += 0x10000000;
68
69	chp->c_base = (u_int8_t*)addr;
70	chp->c_data = (u_int16_t*)(addr + wd_data);
71	return (0);
72}
73