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: releng/5.0/sys/isa/vga_isa.c 83366 2001-09-12 08:38:13Z julian $
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 #ifdef FB_INSTALL_CDEV
63
64 static d_open_t isavga_open;
65 static d_close_t isavga_close;
66 static d_read_t isavga_read;
67 static d_write_t isavga_write;
68 static d_ioctl_t isavga_ioctl;
69 static d_mmap_t isavga_mmap;
70
71 static struct cdevsw isavga_cdevsw = {
72 /* open */ isavga_open,
73 /* close */ isavga_close,
74 /* read */ isavga_read,
75 /* write */ isavga_write,
76 /* ioctl */ isavga_ioctl,
77 /* poll */ nopoll,
78 /* mmap */ isavga_mmap,
79 /* strategy */ nostrategy,
80 /* name */ VGA_DRIVER_NAME,
81 /* maj */ -1,
82 /* dump */ nodump,
83 /* psize */ nopsize,
84 /* flags */ 0,
85 };
86
87 #endif /* FB_INSTALL_CDEV */
88
89 static void
90 isavga_identify(driver_t *driver, device_t parent)
91 {
92 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0);
93 }
94
95 static int
96 isavga_probe(device_t dev)
97 {
98 video_adapter_t adp;
99 device_t bus;
100 int error;
101
102 /* No pnp support */
103 if (isa_get_vendorid(dev))
104 return (ENXIO);
105
106 device_set_desc(dev, "Generic ISA VGA");
107 error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
108 if (error == 0) {
109 bus = device_get_parent(dev);
110 bus_set_resource(dev, SYS_RES_IOPORT, 0,
111 adp.va_io_base, adp.va_io_size);
112 bus_set_resource(dev, SYS_RES_MEMORY, 0,
113 adp.va_mem_base, adp.va_mem_size);
114 #if 0
115 isa_set_port(dev, adp.va_io_base);
116 isa_set_portsize(dev, adp.va_io_size);
117 isa_set_maddr(dev, adp.va_mem_base);
118 isa_set_msize(dev, adp.va_mem_size);
119 #endif
120 }
121 return error;
122 }
123
124 static int
125 isavga_attach(device_t dev)
126 {
127 vga_softc_t *sc;
128 struct resource *port;
129 struct resource *mem;
130 int unit;
131 int rid;
132 int error;
133
134 unit = device_get_unit(dev);
135 sc = device_get_softc(dev);
136
137 rid = 0;
138 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
139 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
140 rid = 0;
141 mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
142 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
143
144 error = vga_attach_unit(unit, sc, device_get_flags(dev));
145 if (error)
146 return error;
147
148 #ifdef FB_INSTALL_CDEV
149 /* attach a virtual frame buffer device */
150 error = fb_attach(makedev(0, VGA_MKMINOR(unit)), sc->adp, &isavga_cdevsw);
151 if (error)
152 return error;
153 #endif /* FB_INSTALL_CDEV */
154
155 if (bootverbose)
156 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
157
158 #if experimental
159 device_add_child(dev, "fb", -1);
160 bus_generic_attach(dev);
161 #endif
162
163 return 0;
164 }
165
166 #ifdef FB_INSTALL_CDEV
167
168 static int
169 isavga_open(dev_t dev, int flag, int mode, struct thread *td)
170 {
171 return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
172 }
173
174 static int
175 isavga_close(dev_t dev, int flag, int mode, struct thread *td)
176 {
177 return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
178 }
179
180 static int
181 isavga_read(dev_t dev, struct uio *uio, int flag)
182 {
183 return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
184 }
185
186 static int
187 isavga_write(dev_t dev, struct uio *uio, int flag)
188 {
189 return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
190 }
191
192 static int
193 isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
194 {
195 return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td);
196 }
197
198 static int
199 isavga_mmap(dev_t dev, vm_offset_t offset, int prot)
200 {
201 return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot);
202 }
203
204 #endif /* FB_INSTALL_CDEV */
205
206 static device_method_t isavga_methods[] = {
207 DEVMETHOD(device_identify, isavga_identify),
208 DEVMETHOD(device_probe, isavga_probe),
209 DEVMETHOD(device_attach, isavga_attach),
210
211 DEVMETHOD(bus_print_child, bus_generic_print_child),
212 { 0, 0 }
213 };
214
215 static driver_t isavga_driver = {
216 VGA_DRIVER_NAME,
217 isavga_methods,
218 sizeof(vga_softc_t),
219 };
220
221 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
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