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  * $FreeBSD$
  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);