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 1.14 2008/03/20 21:25:30 swildner 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/malloc.h>
  38 #include <sys/conf.h>
  39 #include <sys/device.h>
  40 #include <sys/bus.h>
  41 #include <sys/fbio.h>
  42 #include <sys/rman.h>
  43
  44 #include <vm/vm.h>
  45 #include <vm/pmap.h>
  46
  47 #include <machine/md_var.h>
  48 #include <machine/pc/bios.h>
  49
  50 #include <dev/video/fb/fbreg.h>
  51 #include <dev/video/fb/vgareg.h>
  52
  53 #include "isareg.h"
  54 #include "isavar.h"
  55
  56 #define VGA_SOFTC(unit)         \
  57         ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
  58
  59 static devclass_t       isavga_devclass;
  60
  61 static int              isavga_probe(device_t dev);
  62 static int              isavga_attach(device_t dev);
  63 static int              isavga_suspend(device_t dev);
  64 static int              isavga_resume(device_t dev);
  65
  66 static device_method_t isavga_methods[] = {
  67         DEVMETHOD(device_probe,         isavga_probe),
  68         DEVMETHOD(device_attach,        isavga_attach),
  69         DEVMETHOD(device_suspend,       isavga_suspend),
  70         DEVMETHOD(device_resume,        isavga_resume),
  71
  72         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  73         { 0, 0 }
  74 };
  75
  76 static driver_t isavga_driver = {
  77         VGA_DRIVER_NAME,
  78         isavga_methods,
  79         sizeof(vga_softc_t),
  80 };
  81
  82 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
  83
  84 #ifdef FB_INSTALL_CDEV
  85
  86 static d_open_t         isavga_open;
  87 static d_close_t        isavga_close;
  88 static d_read_t         isavga_read;
  89 static d_write_t        isavga_write;
  90 static d_ioctl_t        isavga_ioctl;
  91 static d_mmap_t         isavga_mmap;
  92
  93 static struct dev_ops isavga_ops = {
  94         { VGA_DRIVER_NAME, -1, 0 },
  95         .d_open =       isavga_open,
  96         .d_close =      isavga_close,
  97         .d_read =       isavga_read,
  98         .d_write =      isavga_write,
  99         .d_ioctl =      isavga_ioctl,
 100         .d_mmap =       isavga_mmap,
 101 };
 102
 103 #endif /* FB_INSTALL_CDEV */
 104
 105 static int
 106 isavga_probe(device_t dev)
 107 {
 108         video_adapter_t adp;
 109         int error;
 110
 111         /* No pnp support */
 112         if (isa_get_vendorid(dev))
 113                 return (ENXIO);
 114
 115         device_set_desc(dev, "Generic ISA VGA");
 116         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
 117         if (error == 0) {
 118                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 119                                  adp.va_io_base, adp.va_io_size);
 120                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 121                                  adp.va_mem_base, adp.va_mem_size);
 122 #if 0
 123                 isa_set_port(dev, adp.va_io_base);
 124                 isa_set_portsize(dev, adp.va_io_size);
 125                 isa_set_maddr(dev, adp.va_mem_base);
 126                 isa_set_msize(dev, adp.va_mem_size);
 127 #endif
 128         }
 129         return error;
 130 }
 131
 132 static int
 133 isavga_attach(device_t dev)
 134 {
 135         vga_softc_t *sc;
 136         int unit;
 137         int rid;
 138         int error;
 139
 140         unit = device_get_unit(dev);
 141         sc = device_get_softc(dev);
 142
 143         rid = 0;
 144         bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
 145                            0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 146         rid = 0;
 147         bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
 148                            0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 149
 150         error = vga_attach_unit(unit, sc, device_get_flags(dev));
 151         if (error)
 152                 return error;
 153
 154 #ifdef FB_INSTALL_CDEV
 155         /* attach a virtual frame buffer device */
 156         dev_ops_add(&isavga_ops, VGA_MKMINOR(-1), VGA_MKMINOR(unit));
 157         sc->devt = make_dev(&isavga_ops, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit));
 158         reference_dev(sc->devt);
 159         error = fb_attach(sc->devt, sc->adp);
 160         if (error)
 161                 return error;
 162 #endif /* FB_INSTALL_CDEV */
 163
 164         if (bootverbose)
 165                 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
 166
 167 #if experimental
 168         device_add_child(dev, "fb", -1);
 169         bus_generic_attach(dev);
 170 #endif
 171
 172         return 0;
 173 }
 174
 175 static int
 176 isavga_suspend(device_t dev)
 177 {
 178         vga_softc_t *sc;
 179         int err, nbytes;
 180
 181         sc = device_get_softc(dev);
 182         err = bus_generic_suspend(dev);
 183         if (err)
 184                 return (err);
 185
 186         /* Save the video state across the suspend. */
 187         if (sc->state_buf != NULL) {
 188                 kfree(sc->state_buf, M_TEMP);
 189                 sc->state_buf = NULL;
 190         }
 191         nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0);
 192         if (nbytes <= 0)
 193                 return (0);
 194         sc->state_buf = kmalloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO);
 195         if (sc->state_buf == NULL)
 196                 return (0);
 197         if (bootverbose)
 198                 device_printf(dev, "saving %d bytes of video state\n", nbytes);
 199         if ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf,
 200             nbytes) != 0) {
 201                 device_printf(dev, "failed to save state (nbytes=%d)\n",
 202                     nbytes);
 203                 kfree(sc->state_buf, M_TEMP);
 204                 sc->state_buf = NULL;
 205         }
 206         return (0);
 207 }
 208
 209 static int
 210 isavga_resume(device_t dev)
 211 {
 212         vga_softc_t *sc;
 213
 214         sc = device_get_softc(dev);
 215         if (sc->state_buf != NULL) {
 216                 if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp,
 217                     sc->state_buf) != 0)
 218                         device_printf(dev, "failed to reload state\n");
 219                 kfree(sc->state_buf, M_TEMP);
 220                 sc->state_buf = NULL;
 221         }
 222
 223         bus_generic_resume(dev);
 224         return 0;
 225 }
 226
 227 #ifdef FB_INSTALL_CDEV
 228
 229 static int
 230 isavga_open(struct dev_open_args *ap)
 231 {
 232         cdev_t dev = ap->a_head.a_dev;
 233
 234         return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_oflags,
 235                         ap->a_devtype, ap->a_cred);
 236 }
 237
 238 static int
 239 isavga_close(struct dev_close_args *ap)
 240 {
 241         cdev_t dev = ap->a_head.a_dev;
 242
 243         return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)),
 244                          ap->a_fflag, ap->a_devtype);
 245 }
 246
 247 static int
 248 isavga_read(struct dev_read_args *ap)
 249 {
 250         cdev_t dev = ap->a_head.a_dev;
 251
 252         return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
 253 }
 254
 255 static int
 256 isavga_write(struct dev_write_args *ap)
 257 {
 258         cdev_t dev = ap->a_head.a_dev;
 259
 260         return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
 261 }
 262
 263 static int
 264 isavga_ioctl(struct dev_ioctl_args *ap)
 265 {
 266         cdev_t dev = ap->a_head.a_dev;
 267
 268         return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
 269 }
 270
 271 static int
 272 isavga_mmap(struct dev_mmap_args *ap)
 273 {
 274         cdev_t dev = ap->a_head.a_dev;
 275
 276         ap->a_result = vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_offset, ap->a_nprot);
 277         return(0);
 278 }
 279
 280 #endif /* FB_INSTALL_CDEV */