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  */
  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 */