wdc_isapnp.c revision 1.2 
1/*	$NetBSD: wdc_isapnp.c,v 1.2 1998/01/31 21:31:35 christos Exp $	*/
2
3/*
4 * Copyright (c) 1997 Charles M. Hannum.  All rights reserved.
5 *
6 * DMA and multi-sector PIO handling are derived from code contributed by
7 * Onno van der Linden.
8 *
9 * ISA attachment created by Christopher G. Demetriou.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by Charles M. Hannum.
22 * 4. The name of the author may not be used to endorse or promote products
23 *    derived from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include <sys/types.h>
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/device.h>
41
42#include <machine/bus.h>
43#include <machine/intr.h>
44
45#include <dev/isa/isavar.h>
46#include <dev/isa/isadmavar.h>
47
48#include <dev/isapnp/isapnpreg.h>
49#include <dev/isapnp/isapnpvar.h>
50
51#include <dev/ic/wdcreg.h>
52#include <dev/ic/wdcvar.h>
53
54struct wdc_isapnp_softc {
55	struct	wdc_softc sc_wdcdev;
56	struct	wdc_attachment_data sc_ad;
57	void	*sc_ih;
58	int	sc_drq;
59};
60
61#ifdef __BROKEN_INDIRECT_CONFIG
62int	wdc_isapnp_probe 	__P((struct device *, void *, void *));
63#else
64int	wdc_isapnp_probe 	__P((struct device *, struct cfdata *, void *));
65#endif
66void	wdc_isapnp_attach 	__P((struct device *, struct device *, void *));
67
68struct cfattach wdc_isapnp_ca = {
69	sizeof(struct wdc_isapnp_softc), wdc_isapnp_probe, wdc_isapnp_attach
70};
71
72#ifdef notyet
73static void	wdc_isapnp_dma_setup __P((void *));
74static void	wdc_isapnp_dma_start __P((void *, void *, size_t, int));
75static void	wdc_isapnp_dma_finish __P((void *));
76#endif
77
78int
79wdc_isapnp_probe(parent, match, aux)
80	struct device *parent;
81#ifdef __BROKEN_INDIRECT_CONFIG
82	void *match;
83#else
84	struct cfdata *match;
85#endif
86	void *aux;
87{
88	struct isapnp_attach_args *ipa = aux;
89
90	if (strcmp(ipa->ipa_devcompat, "PNP0600"))
91		return (0);
92
93	return (1);
94}
95
96void
97wdc_isapnp_attach(parent, self, aux)
98	struct device *parent, *self;
99	void *aux;
100{
101	struct wdc_isapnp_softc *sc = (void *)self;
102	struct isapnp_attach_args *ipa = aux;
103
104	printf("\n");
105
106	if (ipa->ipa_nio != 2 ||
107	    ipa->ipa_nmem != 0 ||
108	    ipa->ipa_nmem32 != 0 ||
109	    ipa->ipa_nirq != 1 ||
110	    ipa->ipa_ndrq > 1) {
111		printf("%s: unexpected configuration\n",
112		    sc->sc_wdcdev.sc_dev.dv_xname);
113		return;
114	}
115
116	if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
117		printf("%s: couldn't map registers\n",
118		    sc->sc_wdcdev.sc_dev.dv_xname);
119		return;
120	}
121
122	printf("%s: %s %s\n", sc->sc_wdcdev.sc_dev.dv_xname, ipa->ipa_devident,
123	    ipa->ipa_devclass);
124
125	sc->sc_ad.iot = ipa->ipa_iot;
126	sc->sc_ad.ioh = ipa->ipa_io[0].h;
127	sc->sc_ad.auxiot = ipa->ipa_iot;
128	sc->sc_ad.auxioh = ipa->ipa_io[1].h;
129
130	sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
131	    ipa->ipa_irq[0].type, IPL_BIO, wdcintr, sc);
132
133#ifdef notyet
134	if (ipa->ipa_ndrq > 0) {
135		sc->sc_drq = ipa->ipa_drq[0].num;
136
137		sc->sc_ad.cap |= WDC_CAPABILITY_DMA;
138		sc->sc_ad.dma_setup = &wdc_isapnp_dma_setup;
139		sc->sc_ad.dma_start = &wdc_isapnp_dma_start;
140		sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish;
141	}
142#endif
143
144	wdcattach(&sc->sc_wdcdev, &sc->sc_ad);
145}
146
147#ifdef notyet
148static void
149wdc_isapnp_dma_setup(scv)
150	void *scv;
151{
152	struct wdc_isapnp_softc *sc = scv;
153
154	if (isa_dmamap_create(sc->sc_wdcdev.sc_dev.dv_parent, sc->sc_drq,
155	    MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) {
156		printf("%s: can't create map for drq %d\n",
157		    sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq);
158		sc->sc_ad.cap &= ~WDC_CAPABILITY_DMA;
159	}
160}
161
162static void
163wdc_isapnp_dma_start(scv, buf, size, read)
164	void *scv, *buf;
165	size_t size;
166	int read;
167{
168	struct wdc_isapnp_softc *sc = scv;
169
170	isa_dmastart(sc->sc_wdcdev.sc_dev.dv_parent, sc->sc_drq, buf,
171	    size, NULL, read ? DMAMODE_READ : DMAMODE_WRITE,
172	    BUS_DMA_NOWAIT);
173}
174
175static void
176wdc_isapnp_dma_finish(scv)
177	void *scv;
178{
179	struct wdc_isapnp_softc *sc = scv;
180
181	isa_dmadone(sc->sc_wdcdev.sc_dev.dv_parent, sc->sc_drq);
182}
183#endif
184