sbdio.c revision 1.2 
1/*	$NetBSD: sbdio.c,v 1.2 2008/03/29 08:14:41 tsutsui Exp $	*/
2
3/*-
4 * Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by UCHIYAMA Yasushi.
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: sbdio.c,v 1.2 2008/03/29 08:14:41 tsutsui Exp $");
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/device.h>
45
46#include <machine/autoconf.h>
47#define _EWS4800MIPS_BUS_DMA_PRIVATE
48#include <machine/bus.h>
49#include <machine/sbdvar.h>
50#include <machine/sbdiovar.h>
51
52#include "ioconf.h"
53
54struct sbdio_softc {
55	device_t sc_dev;
56	struct ews4800mips_bus_space sc_bus_tag;
57	struct ews4800mips_bus_dma_tag sc_dma_tag;
58};
59
60static int sbdio_match(device_t, cfdata_t, void *);
61static void sbdio_attach(device_t, device_t, void *);
62static int sbdio_print(void *, const char *);
63
64CFATTACH_DECL_NEW(sbdio, sizeof(struct sbdio_softc),
65    sbdio_match, sbdio_attach, NULL, NULL);
66
67static int sbdio_found;
68
69int
70sbdio_match(device_t parent, cfdata_t cf, void *aux)
71{
72	struct mainbus_attach_args *ma = aux;
73
74	if (sbdio_found != 0)
75		return 0;
76
77	if (strcmp(ma->ma_name, sbdio_cd.cd_name) != 0)
78		return 0;
79
80	if (platform.sbdiodevs == NULL)
81		return 0;
82
83	return 1;
84}
85
86void
87sbdio_attach(device_t parent, device_t self, void *aux)
88{
89	struct sbdio_softc *sc = device_private(self);
90	struct sbdio_attach_args sa;
91	const struct sbdiodevdesc *sd;
92
93	sbdio_found = 1;
94
95	sc->sc_dev = self;
96	aprint_normal("\n");
97
98	/* structure assignment */
99	sc->sc_dma_tag = ews4800mips_default_bus_dma_tag;
100
101	bus_space_create(&sc->sc_bus_tag, device_xname(sc->sc_dev),
102	    MIPS_KSEG1_START, MIPS_KSEG2_START - MIPS_KSEG1_START); /* XXX */
103
104	for (sd = platform.sbdiodevs; sd->sd_name != NULL; sd++) {
105		sa.sa_name  = sd->sd_name;
106		sa.sa_bust  = &sc->sc_bus_tag;
107		sa.sa_dmat  = &sc->sc_dma_tag;
108		sa.sa_addr1 = sd->sd_addr1;
109		sa.sa_addr2 = sd->sd_addr2;
110		sa.sa_irq   = sd->sd_irq;
111		sa.sa_flags = sd->sd_flags;
112		config_found(self, &sa, sbdio_print);
113	}
114}
115
116int
117sbdio_print(void *aux, const char *pnp)
118{
119	struct sbdio_attach_args *sa = aux;
120
121	if (sa->sa_addr1 != (paddr_t)-1) {
122		aprint_normal(" at 0x%lx", sa->sa_addr1);
123		if (sa->sa_addr2 != (paddr_t)-1)
124			aprint_normal(", 0x%lx", sa->sa_addr2);
125	}
126	if (sa->sa_irq != -1)
127		aprint_normal(" irq %d", sa->sa_irq);
128
129	return pnp ? QUIET : UNCONF;
130}
131