66e9675cdd7256bfffd9e1c23aa0bf9e842b5661
[dragonfly.git] / sys / bus / isa / vga_isa.c
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 $
27  * $DragonFly: src/sys/bus/isa/vga_isa.c,v 1.14 2008/03/20 21:25:30 swildner Exp $
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>
37 #include <sys/malloc.h>
38 #include <sys/conf.h>
39 #include <sys/device.h>
40 #include <sys/bus.h>
41 #include <sys/fbio.h>
42 #include <sys/rman.h>
43
44 #include <vm/vm.h>
45 #include <vm/pmap.h>
46
47 #include <machine/md_var.h>
48 #include <machine/pc/bios.h>
49
50 #include <dev/video/fb/fbreg.h>
51 #include <dev/video/fb/vgareg.h>
52
53 #include "isareg.h"
54 #include "isavar.h"
55
56 #define VGA_SOFTC(unit)         \
57         ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
58
59 static devclass_t       isavga_devclass;
60
61 static int              isavga_probe(device_t dev);
62 static int              isavga_attach(device_t dev);
63 static int              isavga_suspend(device_t dev);
64 static int              isavga_resume(device_t dev);
65
66 static device_method_t isavga_methods[] = {
67         DEVMETHOD(device_probe,         isavga_probe),
68         DEVMETHOD(device_attach,        isavga_attach),
69         DEVMETHOD(device_suspend,       isavga_suspend),
70         DEVMETHOD(device_resume,        isavga_resume),
71
72         DEVMETHOD(bus_print_child,      bus_generic_print_child),
73         { 0, 0 }
74 };
75
76 static driver_t isavga_driver = {
77         VGA_DRIVER_NAME,
78         isavga_methods,
79         sizeof(vga_softc_t),
80 };
81
82 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
83
84 #ifdef FB_INSTALL_CDEV
85
86 static d_open_t         isavga_open;
87 static d_close_t        isavga_close;
88 static d_read_t         isavga_read;
89 static d_write_t        isavga_write;
90 static d_ioctl_t        isavga_ioctl;
91 static d_mmap_t         isavga_mmap;
92
93 static struct dev_ops isavga_ops = {
94         { VGA_DRIVER_NAME, -1, 0 },
95         .d_open =       isavga_open,
96         .d_close =      isavga_close,
97         .d_read =       isavga_read,
98         .d_write =      isavga_write,
99         .d_ioctl =      isavga_ioctl,
100         .d_mmap =       isavga_mmap,
101 };
102
103 #endif /* FB_INSTALL_CDEV */
104
105 static int
106 isavga_probe(device_t dev)
107 {
108         video_adapter_t adp;
109         int error;
110
111         /* No pnp support */
112         if (isa_get_vendorid(dev))
113                 return (ENXIO);
114
115         device_set_desc(dev, "Generic ISA VGA");
116         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
117         if (error == 0) {
118                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
119                                  adp.va_io_base, adp.va_io_size);
120                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
121                                  adp.va_mem_base, adp.va_mem_size);
122 #if 0
123                 isa_set_port(dev, adp.va_io_base);
124                 isa_set_portsize(dev, adp.va_io_size);
125                 isa_set_maddr(dev, adp.va_mem_base);
126                 isa_set_msize(dev, adp.va_mem_size);
127 #endif
128         }
129         return error;
130 }
131
132 static int
133 isavga_attach(device_t dev)
134 {
135         vga_softc_t *sc;
136         int unit;
137         int rid;
138         int error;
139
140         unit = device_get_unit(dev);
141         sc = device_get_softc(dev);
142
143         rid = 0;
144         bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
145                            0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
146         rid = 0;
147         bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
148                            0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
149
150         error = vga_attach_unit(unit, sc, device_get_flags(dev));
151         if (error)
152                 return error;
153
154 #ifdef FB_INSTALL_CDEV
155         /* attach a virtual frame buffer device */
156         dev_ops_add(&isavga_ops, VGA_MKMINOR(-1), VGA_MKMINOR(unit));
157         sc->devt = make_dev(&isavga_ops, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit));
158         reference_dev(sc->devt);
159         error = fb_attach(sc->devt, sc->adp);
160         if (error)
161                 return error;
162 #endif /* FB_INSTALL_CDEV */
163
164         if (bootverbose)
165                 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
166
167 #if experimental
168         device_add_child(dev, "fb", -1);
169         bus_generic_attach(dev);
170 #endif
171
172         return 0;
173 }
174
175 static int
176 isavga_suspend(device_t dev)
177 {
178         vga_softc_t *sc;
179         int err, nbytes;
180
181         sc = device_get_softc(dev);
182         err = bus_generic_suspend(dev);
183         if (err)
184                 return (err);
185
186         /* Save the video state across the suspend. */
187         if (sc->state_buf != NULL) {
188                 kfree(sc->state_buf, M_TEMP);
189                 sc->state_buf = NULL;
190         }
191         nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0);
192         if (nbytes <= 0)
193                 return (0);
194         sc->state_buf = kmalloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO);
195         if (sc->state_buf == NULL)
196                 return (0);
197         if (bootverbose)
198                 device_printf(dev, "saving %d bytes of video state\n", nbytes);
199         if ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf,
200             nbytes) != 0) {
201                 device_printf(dev, "failed to save state (nbytes=%d)\n",
202                     nbytes);
203                 kfree(sc->state_buf, M_TEMP);
204                 sc->state_buf = NULL;
205         }
206         return (0);
207 }
208
209 static int
210 isavga_resume(device_t dev)
211 {
212         vga_softc_t *sc;
213
214         sc = device_get_softc(dev);
215         if (sc->state_buf != NULL) {
216                 if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp,
217                     sc->state_buf) != 0)
218                         device_printf(dev, "failed to reload state\n");
219                 kfree(sc->state_buf, M_TEMP);
220                 sc->state_buf = NULL;
221         }
222
223         bus_generic_resume(dev);
224         return 0;
225 }
226
227 #ifdef FB_INSTALL_CDEV
228
229 static int
230 isavga_open(struct dev_open_args *ap)
231 {
232         cdev_t dev = ap->a_head.a_dev;
233
234         return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_oflags,
235                         ap->a_devtype, ap->a_cred);
236 }
237
238 static int
239 isavga_close(struct dev_close_args *ap)
240 {
241         cdev_t dev = ap->a_head.a_dev;
242
243         return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)),
244                          ap->a_fflag, ap->a_devtype);
245 }
246
247 static int
248 isavga_read(struct dev_read_args *ap)
249 {
250         cdev_t dev = ap->a_head.a_dev;
251
252         return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
253 }
254
255 static int
256 isavga_write(struct dev_write_args *ap)
257 {
258         cdev_t dev = ap->a_head.a_dev;
259
260         return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
261 }
262
263 static int
264 isavga_ioctl(struct dev_ioctl_args *ap)
265 {
266         cdev_t dev = ap->a_head.a_dev;
267
268         return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
269 }
270
271 static int
272 isavga_mmap(struct dev_mmap_args *ap)
273 {
274         cdev_t dev = ap->a_head.a_dev;
275
276         ap->a_result = vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_offset, ap->a_nprot);
277         return(0);
278 }
279
280 #endif /* FB_INSTALL_CDEV */