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 1.8 2004/05/19 22:52:38 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/video/fb/fbreg.h>
  53 #include <dev/video/fb/vgareg.h>
  54
  55 #include "isareg.h"
  56 #include "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         /* name */      VGA_DRIVER_NAME,
  93         /* maj */       -1,
  94         /* flags */     0,
  95         /* port */      NULL,
  96         /* clone */     NULL,
  97
  98         /* open */      isavga_open,
  99         /* close */     isavga_close,
 100         /* read */      isavga_read,
 101         /* write */     isavga_write,
 102         /* ioctl */     isavga_ioctl,
 103         /* poll */      nopoll,
 104         /* mmap */      isavga_mmap,
 105         /* strategy */  nostrategy,
 106         /* dump */      nodump,
 107         /* psize */     nopsize
 108 };
 109
 110 #endif /* FB_INSTALL_CDEV */
 111
 112 static int
 113 isavga_probe(device_t dev)
 114 {
 115         video_adapter_t adp;
 116         device_t bus;
 117         int error;
 118
 119         /* No pnp support */
 120         if (isa_get_vendorid(dev))
 121                 return (ENXIO);
 122
 123         device_set_desc(dev, "Generic ISA VGA");
 124         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
 125         if (error == 0) {
 126                 bus = device_get_parent(dev);
 127                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 128                                  adp.va_io_base, adp.va_io_size);
 129                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 130                                  adp.va_mem_base, adp.va_mem_size);
 131 #if 0
 132                 isa_set_port(dev, adp.va_io_base);
 133                 isa_set_portsize(dev, adp.va_io_size);
 134                 isa_set_maddr(dev, adp.va_mem_base);
 135                 isa_set_msize(dev, adp.va_mem_size);
 136 #endif
 137         }
 138         return error;
 139 }
 140
 141 static int
 142 isavga_attach(device_t dev)
 143 {
 144         vga_softc_t *sc;
 145         struct resource *port;
 146         struct resource *mem;
 147         int unit;
 148         int rid;
 149         int error;
 150
 151         unit = device_get_unit(dev);
 152         sc = device_get_softc(dev);
 153
 154         rid = 0;
 155         port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
 156                                   0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 157         rid = 0;
 158         mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
 159                                  0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 160
 161         error = vga_attach_unit(unit, sc, device_get_flags(dev));
 162         if (error)
 163                 return error;
 164
 165 #ifdef FB_INSTALL_CDEV
 166         /* attach a virtual frame buffer device */
 167         cdevsw_add(&isavga_cdevsw, VGA_MKMINOR(-1), VGA_MKMINOR(unit));
 168         sc->devt = make_dev(&isavga_cdevsw, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit));
 169         reference_dev(sc->devt);
 170         error = fb_attach(sc->devt, sc->adp);
 171         if (error)
 172                 return error;
 173 #endif /* FB_INSTALL_CDEV */
 174
 175         if (bootverbose)
 176                 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
 177
 178 #if experimental
 179         device_add_child(dev, "fb", -1);
 180         bus_generic_attach(dev);
 181 #endif
 182
 183         return 0;
 184 }
 185
 186 #ifdef FB_INSTALL_CDEV
 187
 188 static int
 189 isavga_open(dev_t dev, int flag, int mode, struct thread *td)
 190 {
 191         return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
 192 }
 193
 194 static int
 195 isavga_close(dev_t dev, int flag, int mode, struct thread *td)
 196 {
 197         return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
 198 }
 199
 200 static int
 201 isavga_read(dev_t dev, struct uio *uio, int flag)
 202 {
 203         return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
 204 }
 205
 206 static int
 207 isavga_write(dev_t dev, struct uio *uio, int flag)
 208 {
 209         return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
 210 }
 211
 212 static int
 213 isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
 214 {
 215         return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td);
 216 }
 217
 218 static int
 219 isavga_mmap(dev_t dev, vm_offset_t offset, int prot)
 220 {
 221         return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot);
 222 }
 223
 224 #endif /* FB_INSTALL_CDEV */