Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / bus / isa / vga_isa.c
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1/*-
2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer as
10 * the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/isa/vga_isa.c,v 1.17 2000/01/29 15:08:56 peter Exp $
b13267a5 27 * $DragonFly: src/sys/bus/isa/vga_isa.c,v 1.12 2006/09/10 01:26:33 dillon Exp $
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28 */
29
30#include "opt_vga.h"
31#include "opt_fb.h"
32#include "opt_syscons.h" /* should be removed in the future, XXX */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
b5f86e2f 37#include <sys/malloc.h>
984263bc 38#include <sys/conf.h>
fef8985e 39#include <sys/device.h>
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40#include <sys/bus.h>
41#include <sys/fbio.h>
42
43#include <machine/bus.h>
44#include <machine/resource.h>
45
46#include <sys/rman.h>
47
48#include <vm/vm.h>
49#include <vm/pmap.h>
50
51#include <machine/md_var.h>
52#include <machine/pc/bios.h>
53
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54#include <dev/video/fb/fbreg.h>
55#include <dev/video/fb/vgareg.h>
984263bc 56
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57#include "isareg.h"
58#include "isavar.h"
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59
60#define VGA_SOFTC(unit) \
61 ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
62
63static devclass_t isavga_devclass;
64
65static int isavga_probe(device_t dev);
66static int isavga_attach(device_t dev);
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67static int isavga_suspend(device_t dev);
68static int isavga_resume(device_t dev);
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69
70static device_method_t isavga_methods[] = {
71 DEVMETHOD(device_probe, isavga_probe),
72 DEVMETHOD(device_attach, isavga_attach),
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73 DEVMETHOD(device_suspend, isavga_suspend),
74 DEVMETHOD(device_resume, isavga_resume),
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75
76 DEVMETHOD(bus_print_child, bus_generic_print_child),
77 { 0, 0 }
78};
79
80static driver_t isavga_driver = {
81 VGA_DRIVER_NAME,
82 isavga_methods,
83 sizeof(vga_softc_t),
84};
85
86DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
87
88#ifdef FB_INSTALL_CDEV
89
90static d_open_t isavga_open;
91static d_close_t isavga_close;
92static d_read_t isavga_read;
93static d_write_t isavga_write;
94static d_ioctl_t isavga_ioctl;
95static d_mmap_t isavga_mmap;
96
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97static struct dev_ops isavga_ops = {
98 { VGA_DRIVER_NAME, -1, 0 },
99 .d_open = isavga_open,
100 .d_close = isavga_close,
101 .d_read = isavga_read,
102 .d_write = isavga_write,
103 .d_ioctl = isavga_ioctl,
104 .d_mmap = isavga_mmap,
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105};
106
107#endif /* FB_INSTALL_CDEV */
108
109static int
110isavga_probe(device_t dev)
111{
112 video_adapter_t adp;
113 device_t bus;
114 int error;
115
116 /* No pnp support */
117 if (isa_get_vendorid(dev))
118 return (ENXIO);
119
120 device_set_desc(dev, "Generic ISA VGA");
121 error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
122 if (error == 0) {
123 bus = device_get_parent(dev);
124 bus_set_resource(dev, SYS_RES_IOPORT, 0,
125 adp.va_io_base, adp.va_io_size);
126 bus_set_resource(dev, SYS_RES_MEMORY, 0,
127 adp.va_mem_base, adp.va_mem_size);
128#if 0
129 isa_set_port(dev, adp.va_io_base);
130 isa_set_portsize(dev, adp.va_io_size);
131 isa_set_maddr(dev, adp.va_mem_base);
132 isa_set_msize(dev, adp.va_mem_size);
133#endif
134 }
135 return error;
136}
137
138static int
139isavga_attach(device_t dev)
140{
141 vga_softc_t *sc;
142 struct resource *port;
143 struct resource *mem;
144 int unit;
145 int rid;
146 int error;
147
148 unit = device_get_unit(dev);
149 sc = device_get_softc(dev);
150
151 rid = 0;
152 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
153 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
154 rid = 0;
155 mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
156 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
157
158 error = vga_attach_unit(unit, sc, device_get_flags(dev));
159 if (error)
160 return error;
161
162#ifdef FB_INSTALL_CDEV
163 /* attach a virtual frame buffer device */
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164 dev_ops_add(&isavga_ops, VGA_MKMINOR(-1), VGA_MKMINOR(unit));
165 sc->devt = make_dev(&isavga_ops, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit));
e4c9c0c8 166 reference_dev(sc->devt);
335dda38 167 error = fb_attach(sc->devt, sc->adp);
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168 if (error)
169 return error;
170#endif /* FB_INSTALL_CDEV */
171
172 if (bootverbose)
173 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
174
175#if experimental
176 device_add_child(dev, "fb", -1);
177 bus_generic_attach(dev);
178#endif
179
180 return 0;
181}
182
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183static int
184isavga_suspend(device_t dev)
185{
186 vga_softc_t *sc;
187 int err, nbytes;
188
189 sc = device_get_softc(dev);
190 err = bus_generic_suspend(dev);
191 if (err)
192 return (err);
193
194 /* Save the video state across the suspend. */
195 if (sc->state_buf != NULL) {
efda3bd0 196 kfree(sc->state_buf, M_TEMP);
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197 sc->state_buf = NULL;
198 }
199 nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0);
200 if (nbytes <= 0)
201 return (0);
efda3bd0 202 sc->state_buf = kmalloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO);
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203 if (sc->state_buf == NULL)
204 return (0);
205 if (bootverbose)
206 device_printf(dev, "saving %d bytes of video state\n", nbytes);
207 if ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf,
208 nbytes) != 0) {
209 device_printf(dev, "failed to save state (nbytes=%d)\n",
210 nbytes);
efda3bd0 211 kfree(sc->state_buf, M_TEMP);
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212 sc->state_buf = NULL;
213 }
214 return (0);
215}
216
217static int
218isavga_resume(device_t dev)
219{
220 vga_softc_t *sc;
221
222 sc = device_get_softc(dev);
223 if (sc->state_buf != NULL) {
224 if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp,
225 sc->state_buf) != 0)
226 device_printf(dev, "failed to reload state\n");
efda3bd0 227 kfree(sc->state_buf, M_TEMP);
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228 sc->state_buf = NULL;
229 }
230
231 bus_generic_resume(dev);
232 return 0;
233}
234
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235#ifdef FB_INSTALL_CDEV
236
237static int
fef8985e 238isavga_open(struct dev_open_args *ap)
984263bc 239{
b13267a5 240 cdev_t dev = ap->a_head.a_dev;
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241
242 return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_oflags,
243 ap->a_devtype, ap->a_cred);
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244}
245
246static int
fef8985e 247isavga_close(struct dev_close_args *ap)
984263bc 248{
b13267a5 249 cdev_t dev = ap->a_head.a_dev;
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250
251 return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)),
252 ap->a_fflag, ap->a_devtype);
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253}
254
255static int
fef8985e 256isavga_read(struct dev_read_args *ap)
984263bc 257{
b13267a5 258 cdev_t dev = ap->a_head.a_dev;
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259
260 return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
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261}
262
263static int
fef8985e 264isavga_write(struct dev_write_args *ap)
984263bc 265{
b13267a5 266 cdev_t dev = ap->a_head.a_dev;
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267
268 return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
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269}
270
271static int
fef8985e 272isavga_ioctl(struct dev_ioctl_args *ap)
984263bc 273{
b13267a5 274 cdev_t dev = ap->a_head.a_dev;
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275
276 return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
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277}
278
279static int
fef8985e 280isavga_mmap(struct dev_mmap_args *ap)
984263bc 281{
b13267a5 282 cdev_t dev = ap->a_head.a_dev;
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283
284 ap->a_result = vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_offset, ap->a_nprot);
285 return(0);
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286}
287
288#endif /* FB_INSTALL_CDEV */