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/5.1/sys/isa/vga_isa.c 114384 2003-05-01 04:23:15Z peter $
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 #ifdef __i386__
50 #include <machine/pc/bios.h>
51 #endif
52
53 #include <dev/fb/fbreg.h>
54 #include <dev/fb/vgareg.h>
55
56 #include <isa/isareg.h>
57 #include <isa/isavar.h>
58
59 #define VGA_SOFTC(unit) \
60 ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
61
62 static devclass_t isavga_devclass;
63
64 #ifdef FB_INSTALL_CDEV
65
66 static d_open_t isavga_open;
67 static d_close_t isavga_close;
68 static d_read_t isavga_read;
69 static d_write_t isavga_write;
70 static d_ioctl_t isavga_ioctl;
71 static d_mmap_t isavga_mmap;
72
73 static struct cdevsw isavga_cdevsw = {
74 .d_open = isavga_open,
75 .d_close = isavga_close,
76 .d_read = isavga_read,
77 .d_write = isavga_write,
78 .d_ioctl = isavga_ioctl,
79 .d_mmap = isavga_mmap,
80 .d_name = VGA_DRIVER_NAME,
81 .d_maj = -1,
82 };
83
84 #endif /* FB_INSTALL_CDEV */
85
86 static void
87 isavga_identify(driver_t *driver, device_t parent)
88 {
89 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0);
90 }
91
92 static int
93 isavga_probe(device_t dev)
94 {
95 video_adapter_t adp;
96 device_t bus;
97 int error;
98
99 /* No pnp support */
100 if (isa_get_vendorid(dev))
101 return (ENXIO);
102
103 device_set_desc(dev, "Generic ISA VGA");
104 error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
105 if (error == 0) {
106 bus = device_get_parent(dev);
107 bus_set_resource(dev, SYS_RES_IOPORT, 0,
108 adp.va_io_base, adp.va_io_size);
109 bus_set_resource(dev, SYS_RES_MEMORY, 0,
110 adp.va_mem_base, adp.va_mem_size);
111 #if 0
112 isa_set_port(dev, adp.va_io_base);
113 isa_set_portsize(dev, adp.va_io_size);
114 isa_set_maddr(dev, adp.va_mem_base);
115 isa_set_msize(dev, adp.va_mem_size);
116 #endif
117 }
118 return error;
119 }
120
121 static int
122 isavga_attach(device_t dev)
123 {
124 vga_softc_t *sc;
125 struct resource *port;
126 struct resource *mem;
127 int unit;
128 int rid;
129 int error;
130
131 unit = device_get_unit(dev);
132 sc = device_get_softc(dev);
133
134 rid = 0;
135 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
136 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
137 rid = 0;
138 mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
139 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
140
141 error = vga_attach_unit(unit, sc, device_get_flags(dev));
142 if (error)
143 return error;
144
145 #ifdef FB_INSTALL_CDEV
146 /* attach a virtual frame buffer device */
147 error = fb_attach(makedev(0, VGA_MKMINOR(unit)), sc->adp, &isavga_cdevsw);
148 if (error)
149 return error;
150 #endif /* FB_INSTALL_CDEV */
151
152 if (bootverbose)
153 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
154
155 #if experimental
156 device_add_child(dev, "fb", -1);
157 bus_generic_attach(dev);
158 #endif
159
160 return 0;
161 }
162
163 #ifdef FB_INSTALL_CDEV
164
165 static int
166 isavga_open(dev_t dev, int flag, int mode, struct thread *td)
167 {
168 return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
169 }
170
171 static int
172 isavga_close(dev_t dev, int flag, int mode, struct thread *td)
173 {
174 return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
175 }
176
177 static int
178 isavga_read(dev_t dev, struct uio *uio, int flag)
179 {
180 return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
181 }
182
183 static int
184 isavga_write(dev_t dev, struct uio *uio, int flag)
185 {
186 return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
187 }
188
189 static int
190 isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
191 {
192 return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td);
193 }
194
195 static int
196 isavga_mmap(dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int prot)
197 {
198 return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot);
199 }
200
201 #endif /* FB_INSTALL_CDEV */
202
203 static device_method_t isavga_methods[] = {
204 DEVMETHOD(device_identify, isavga_identify),
205 DEVMETHOD(device_probe, isavga_probe),
206 DEVMETHOD(device_attach, isavga_attach),
207
208 DEVMETHOD(bus_print_child, bus_generic_print_child),
209 { 0, 0 }
210 };
211
212 static driver_t isavga_driver = {
213 VGA_DRIVER_NAME,
214 isavga_methods,
215 sizeof(vga_softc_t),
216 };
217
218 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
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