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 1.2 2003/06/17 04:28:40 dillon 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/conf.h>
  38 #include <sys/bus.h>
  39 #include <sys/fbio.h>
  40
  41 #include <machine/bus.h>
  42 #include <machine/resource.h>
  43
  44 #include <sys/rman.h>
  45
  46 #include <vm/vm.h>
  47 #include <vm/pmap.h>
  48
  49 #include <machine/md_var.h>
  50 #include <machine/pc/bios.h>
  51
  52 #include <dev/fb/fbreg.h>
  53 #include <dev/fb/vgareg.h>
  54
  55 #include <isa/isareg.h>
  56 #include <isa/isavar.h>
  57
  58 #define VGA_SOFTC(unit)         \
  59         ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
  60
  61 static devclass_t       isavga_devclass;
  62
  63 static int              isavga_probe(device_t dev);
  64 static int              isavga_attach(device_t dev);
  65
  66 static device_method_t isavga_methods[] = {
  67         DEVMETHOD(device_probe,         isavga_probe),
  68         DEVMETHOD(device_attach,        isavga_attach),
  69
  70         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  71         { 0, 0 }
  72 };
  73
  74 static driver_t isavga_driver = {
  75         VGA_DRIVER_NAME,
  76         isavga_methods,
  77         sizeof(vga_softc_t),
  78 };
  79
  80 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
  81
  82 #ifdef FB_INSTALL_CDEV
  83
  84 static d_open_t         isavga_open;
  85 static d_close_t        isavga_close;
  86 static d_read_t         isavga_read;
  87 static d_write_t        isavga_write;
  88 static d_ioctl_t        isavga_ioctl;
  89 static d_mmap_t         isavga_mmap;
  90
  91 static struct cdevsw isavga_cdevsw = {
  92         /* open */      isavga_open,
  93         /* close */     isavga_close,
  94         /* read */      isavga_read,
  95         /* write */     isavga_write,
  96         /* ioctl */     isavga_ioctl,
  97         /* poll */      nopoll,
  98         /* mmap */      isavga_mmap,
  99         /* strategy */  nostrategy,
 100         /* name */      VGA_DRIVER_NAME,
 101         /* maj */       -1,
 102         /* dump */      nodump,
 103         /* psize */     nopsize,
 104         /* flags */     0,
 105         /* bmaj */      -1
 106 };
 107
 108 #endif /* FB_INSTALL_CDEV */
 109
 110 static int
 111 isavga_probe(device_t dev)
 112 {
 113         video_adapter_t adp;
 114         device_t bus;
 115         int error;
 116
 117         /* No pnp support */
 118         if (isa_get_vendorid(dev))
 119                 return (ENXIO);
 120
 121         device_set_desc(dev, "Generic ISA VGA");
 122         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
 123         if (error == 0) {
 124                 bus = device_get_parent(dev);
 125                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 126                                  adp.va_io_base, adp.va_io_size);
 127                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 128                                  adp.va_mem_base, adp.va_mem_size);
 129 #if 0
 130                 isa_set_port(dev, adp.va_io_base);
 131                 isa_set_portsize(dev, adp.va_io_size);
 132                 isa_set_maddr(dev, adp.va_mem_base);
 133                 isa_set_msize(dev, adp.va_mem_size);
 134 #endif
 135         }
 136         return error;
 137 }
 138
 139 static int
 140 isavga_attach(device_t dev)
 141 {
 142         vga_softc_t *sc;
 143         struct resource *port;
 144         struct resource *mem;
 145         int unit;
 146         int rid;
 147         int error;
 148
 149         unit = device_get_unit(dev);
 150         sc = device_get_softc(dev);
 151
 152         rid = 0;
 153         port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
 154                                   0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 155         rid = 0;
 156         mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
 157                                  0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 158
 159         error = vga_attach_unit(unit, sc, device_get_flags(dev));
 160         if (error)
 161                 return error;
 162
 163 #ifdef FB_INSTALL_CDEV
 164         /* attach a virtual frame buffer device */
 165         error = fb_attach(makedev(0, VGA_MKMINOR(unit)), sc->adp, &isavga_cdevsw);
 166         if (error)
 167                 return error;
 168 #endif /* FB_INSTALL_CDEV */
 169
 170         if (bootverbose)
 171                 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
 172
 173 #if experimental
 174         device_add_child(dev, "fb", -1);
 175         bus_generic_attach(dev);
 176 #endif
 177
 178         return 0;
 179 }
 180
 181 #ifdef FB_INSTALL_CDEV
 182
 183 static int
 184 isavga_open(dev_t dev, int flag, int mode, struct proc *p)
 185 {
 186         return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, p);
 187 }
 188
 189 static int
 190 isavga_close(dev_t dev, int flag, int mode, struct proc *p)
 191 {
 192         return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, p);
 193 }
 194
 195 static int
 196 isavga_read(dev_t dev, struct uio *uio, int flag)
 197 {
 198         return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
 199 }
 200
 201 static int
 202 isavga_write(dev_t dev, struct uio *uio, int flag)
 203 {
 204         return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
 205 }
 206
 207 static int
 208 isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p)
 209 {
 210         return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, p);
 211 }
 212
 213 static int
 214 isavga_mmap(dev_t dev, vm_offset_t offset, int prot)
 215 {
 216         return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot);
 217 }
 218
 219 #endif /* FB_INSTALL_CDEV */