1/*
2 */
3
4#include <sys/cdefs.h>
5__FBSDID("$FreeBSD: releng/11.0/sys/dev/scd/scd_isa.c 274679 2014-11-18 22:02:37Z jhb $");
6
7#include <sys/param.h>
8#include <sys/systm.h>
9#include <sys/kernel.h>
10#include <sys/module.h>
11#include <sys/conf.h>
12#include <sys/fcntl.h>
13#include <sys/bio.h>
14#include <sys/cdio.h>
15#include <sys/bus.h>
16
17#include <sys/mutex.h>
18
19#include <machine/bus.h>
20#include <machine/resource.h>
21#include <sys/rman.h>
22
23#include <isa/isavar.h>
24
25#include <dev/scd/scdreg.h>
26#include <dev/scd/scdvar.h>
27
28static int	scd_isa_probe	(device_t);
29static int	scd_isa_attach	(device_t);
30static int	scd_isa_detach	(device_t);
31
32static int	scd_alloc_resources	(device_t);
33static void	scd_release_resources	(device_t);
34
35static int
36scd_isa_probe (device_t dev)
37{
38	struct scd_softc *	sc;
39	int			error;
40
41	/* No pnp support */
42	if (isa_get_vendorid(dev))
43		return (ENXIO);
44
45	/* IO port must be configured. */
46	if (bus_get_resource_start(dev, SYS_RES_IOPORT, 0) == 0)
47		return (ENXIO);
48
49	sc = device_get_softc(dev);
50	sc->dev = dev;
51	sc->port_rid = 0;
52	sc->port_type = SYS_RES_IOPORT;
53	error = scd_alloc_resources(dev);
54	if (error)
55		goto fail;
56
57	error = scd_probe(sc);
58	if (error) {
59		device_printf(dev, "Probe failed.\n");
60		goto fail;
61	}
62
63	device_set_desc(dev, sc->data.name);
64
65fail:
66	scd_release_resources(dev);
67	return (error);
68}
69
70static int
71scd_isa_attach (device_t dev)
72{
73	struct scd_softc *	sc;
74	int			error;
75
76	sc = device_get_softc(dev);
77	error = 0;
78
79	sc->dev = dev;
80	sc->port_rid = 0;
81	sc->port_type = SYS_RES_IOPORT;
82	error = scd_alloc_resources(dev);
83	if (error)
84		goto fail;
85
86	error = scd_probe(sc);
87	if (error) {
88		device_printf(dev, "Re-Probe failed.\n");
89		goto fail;
90	}
91
92	error = scd_attach(sc);
93	if (error) {
94		device_printf(dev, "Attach failed.\n");
95		goto fail;
96	}
97
98	return (0);
99fail:
100	scd_release_resources(dev);
101	return (error);
102}
103
104static int
105scd_isa_detach (device_t dev)
106{
107	struct scd_softc *	sc;
108	int			error;
109
110	sc = device_get_softc(dev);
111	error = 0;
112
113	destroy_dev(sc->scd_dev_t);
114
115	scd_release_resources(dev);
116
117	return (error);
118}
119
120static int
121scd_alloc_resources (device_t dev)
122{
123	struct scd_softc *	sc;
124	int			error;
125
126	sc = device_get_softc(dev);
127	error = 0;
128	mtx_init(&sc->mtx, "scd", NULL, MTX_DEF);
129
130	if (sc->port_type) {
131		sc->port = bus_alloc_resource_any(dev, sc->port_type,
132				&sc->port_rid, RF_ACTIVE);
133		if (sc->port == NULL) {
134			device_printf(dev, "Unable to allocate PORT resource.\n");
135			error = ENOMEM;
136			goto bad;
137		}
138	}
139
140bad:
141	return (error);
142}
143
144void
145scd_release_resources (device_t dev)
146{
147	struct scd_softc *	sc;
148
149	sc = device_get_softc(dev);
150
151	if (sc->port)
152		bus_release_resource(dev, sc->port_type, sc->port_rid, sc->port);
153
154	mtx_destroy(&sc->mtx);
155
156	return;
157}
158
159static device_method_t scd_isa_methods[] = {
160	DEVMETHOD(device_probe,         scd_isa_probe),
161	DEVMETHOD(device_attach,        scd_isa_attach),
162	DEVMETHOD(device_detach,        scd_isa_detach),
163
164	{ 0, 0 }
165};
166
167static driver_t scd_isa_driver = {
168	"scd",
169	scd_isa_methods,
170	sizeof(struct scd_softc)
171};
172
173static devclass_t	scd_devclass;
174
175DRIVER_MODULE(scd, isa, scd_isa_driver, scd_devclass, NULL, 0);
176