FreeBSD/Linux Kernel Cross Reference
sys/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 * $FreeBSD$
27 */
28
29 #include "opt_vga.h"
30 #include "opt_fb.h"
31 #include "opt_syscons.h" /* should be removed in the future, XXX */
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/conf.h>
37 #include <sys/bus.h>
38 #include <sys/fbio.h>
39
40 #include <machine/bus.h>
41 #include <machine/resource.h>
42
43 #include <sys/rman.h>
44
45 #include <vm/vm.h>
46 #include <vm/pmap.h>
47
48 #include <machine/md_var.h>
49 #include <machine/pc/bios.h>
50
51 #include <dev/fb/fbreg.h>
52 #include <dev/fb/vgareg.h>
53
54 #include <isa/isareg.h>
55 #include <isa/isavar.h>
56
57 #define VGA_SOFTC(unit) \
58 ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
59
60 static devclass_t isavga_devclass;
61
62 static int isavga_probe(device_t dev);
63 static int isavga_attach(device_t dev);
64
65 static device_method_t isavga_methods[] = {
66 DEVMETHOD(device_probe, isavga_probe),
67 DEVMETHOD(device_attach, isavga_attach),
68
69 DEVMETHOD(bus_print_child, bus_generic_print_child),
70 { 0, 0 }
71 };
72
73 static driver_t isavga_driver = {
74 VGA_DRIVER_NAME,
75 isavga_methods,
76 sizeof(vga_softc_t),
77 };
78
79 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
80
81 #ifdef FB_INSTALL_CDEV
82
83 static d_open_t isavga_open;
84 static d_close_t isavga_close;
85 static d_read_t isavga_read;
86 static d_write_t isavga_write;
87 static d_ioctl_t isavga_ioctl;
88 static d_mmap_t isavga_mmap;
89
90 static struct cdevsw isavga_cdevsw = {
91 /* open */ isavga_open,
92 /* close */ isavga_close,
93 /* read */ isavga_read,
94 /* write */ isavga_write,
95 /* ioctl */ isavga_ioctl,
96 /* poll */ nopoll,
97 /* mmap */ isavga_mmap,
98 /* strategy */ nostrategy,
99 /* name */ VGA_DRIVER_NAME,
100 /* maj */ -1,
101 /* dump */ nodump,
102 /* psize */ nopsize,
103 /* flags */ 0,
104 /* bmaj */ -1
105 };
106
107 #endif /* FB_INSTALL_CDEV */
108
109 static int
110 isavga_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
138 static int
139 isavga_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 */
164 error = fb_attach(makedev(0, VGA_MKMINOR(unit)), sc->adp, &isavga_cdevsw);
165 if (error)
166 return error;
167 #endif /* FB_INSTALL_CDEV */
168
169 if (bootverbose)
170 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
171
172 #if experimental
173 device_add_child(dev, "fb", -1);
174 bus_generic_attach(dev);
175 #endif
176
177 return 0;
178 }
179
180 #ifdef FB_INSTALL_CDEV
181
182 static int
183 isavga_open(dev_t dev, int flag, int mode, struct proc *p)
184 {
185 return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, p);
186 }
187
188 static int
189 isavga_close(dev_t dev, int flag, int mode, struct proc *p)
190 {
191 return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, p);
192 }
193
194 static int
195 isavga_read(dev_t dev, struct uio *uio, int flag)
196 {
197 return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
198 }
199
200 static int
201 isavga_write(dev_t dev, struct uio *uio, int flag)
202 {
203 return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
204 }
205
206 static int
207 isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p)
208 {
209 return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, p);
210 }
211
212 static int
213 isavga_mmap(dev_t dev, vm_offset_t offset, int prot)
214 {
215 return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot);
216 }
217
218 #endif /* FB_INSTALL_CDEV */
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