sys/bus/isa/vga_isa.c

   1 /*-
   2  * (MPSAFE)
   3  *
   4  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer as
  12  *    the first lines of this file unmodified.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/sys/isa/vga_isa.c,v 1.17 2000/01/29 15:08:56 peter Exp $
  29  */
  30
  31 #include "opt_vga.h"
  32 #include "opt_fb.h"
  33 #include "opt_syscons.h"        /* should be removed in the future, XXX */
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/malloc.h>
  39 #include <sys/conf.h>
  40 #include <sys/device.h>
  41 #include <sys/bus.h>
  42 #include <sys/fbio.h>
  43 #include <sys/rman.h>
  44 #include <sys/thread.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 static int              isavga_suspend(device_t dev);
  66 static int              isavga_resume(device_t dev);
  67
  68 static device_method_t isavga_methods[] = {
  69         DEVMETHOD(device_probe,         isavga_probe),
  70         DEVMETHOD(device_attach,        isavga_attach),
  71         DEVMETHOD(device_suspend,       isavga_suspend),
  72         DEVMETHOD(device_resume,        isavga_resume),
  73
  74         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  75         DEVMETHOD_END
  76 };
  77
  78 static driver_t isavga_driver = {
  79         VGA_DRIVER_NAME,
  80         isavga_methods,
  81         sizeof(vga_softc_t),
  82 };
  83
  84 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, NULL, NULL);
  85
  86 #ifdef FB_INSTALL_CDEV
  87
  88 static d_open_t         isavga_open;
  89 static d_close_t        isavga_close;
  90 static d_read_t         isavga_read;
  91 static d_write_t        isavga_write;
  92 static d_ioctl_t        isavga_ioctl;
  93 static d_mmap_t         isavga_mmap;
  94
  95 static struct dev_ops isavga_ops = {
  96         { VGA_DRIVER_NAME, -1, 0 },
  97         .d_open =       isavga_open,
  98         .d_close =      isavga_close,
  99         .d_read =       isavga_read,
 100         .d_write =      isavga_write,
 101         .d_ioctl =      isavga_ioctl,
 102         .d_mmap =       isavga_mmap,
 103 };
 104
 105 #endif /* FB_INSTALL_CDEV */
 106
 107 static int
 108 isavga_probe(device_t dev)
 109 {
 110         video_adapter_t adp;
 111         int error;
 112
 113         /* No pnp support */
 114         if (isa_get_vendorid(dev))
 115                 return (ENXIO);
 116
 117         device_set_desc(dev, "Generic ISA VGA");
 118         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
 119         if (error == 0) {
 120                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 121                                  adp.va_io_base, adp.va_io_size, -1);
 122                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 123                                  adp.va_mem_base, adp.va_mem_size, -1);
 124 #if 0
 125                 isa_set_port(dev, adp.va_io_base);
 126                 isa_set_portsize(dev, adp.va_io_size);
 127                 isa_set_maddr(dev, adp.va_mem_base);
 128                 isa_set_msize(dev, adp.va_mem_size);
 129 #endif
 130         }
 131         return error;
 132 }
 133
 134 static int
 135 isavga_attach(device_t dev)
 136 {
 137         vga_softc_t *sc;
 138         int unit;
 139         int rid;
 140         int error;
 141
 142         unit = device_get_unit(dev);
 143         sc = device_get_softc(dev);
 144
 145         rid = 0;
 146         bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
 147                            0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 148         rid = 0;
 149         bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
 150                            0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 151
 152         error = vga_attach_unit(unit, sc, device_get_flags(dev));
 153         if (error)
 154                 return error;
 155
 156 #ifdef FB_INSTALL_CDEV
 157         /* attach a virtual frame buffer device */
 158         sc->devt = make_dev(&isavga_ops, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit));
 159         reference_dev(sc->devt);
 160         error = fb_attach(sc->devt, sc->adp);
 161         if (error)
 162                 return error;
 163 #endif /* FB_INSTALL_CDEV */
 164
 165         if (bootverbose)
 166                 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
 167
 168 #if 0 /* experimental */
 169         device_add_child(dev, "fb", -1);
 170         bus_generic_attach(dev);
 171 #endif
 172
 173         return 0;
 174 }
 175
 176 static int
 177 isavga_suspend(device_t dev)
 178 {
 179         vga_softc_t *sc;
 180         int err, nbytes;
 181
 182         sc = device_get_softc(dev);
 183         err = bus_generic_suspend(dev);
 184         if (err)
 185                 return (err);
 186
 187         /* Save the video state across the suspend. */
 188         if (sc->state_buf != NULL) {
 189                 kfree(sc->state_buf, M_TEMP);
 190                 sc->state_buf = NULL;
 191         }
 192         nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0);
 193         if (nbytes <= 0)
 194                 return (0);
 195         sc->state_buf = kmalloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO);
 196         if (sc->state_buf == NULL)
 197                 return (0);
 198         if (bootverbose)
 199                 device_printf(dev, "saving %d bytes of video state\n", nbytes);
 200         lwkt_gettoken(&tty_token);
 201         if ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf,
 202             nbytes) != 0) {
 203                 device_printf(dev, "failed to save state (nbytes=%d)\n",
 204                     nbytes);
 205                 kfree(sc->state_buf, M_TEMP);
 206                 sc->state_buf = NULL;
 207         }
 208         lwkt_reltoken(&tty_token);
 209         return (0);
 210 }
 211
 212 static int
 213 isavga_resume(device_t dev)
 214 {
 215         vga_softc_t *sc;
 216
 217         sc = device_get_softc(dev);
 218         if (sc->state_buf != NULL) {
 219                 if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp,
 220                     sc->state_buf) != 0)
 221                         device_printf(dev, "failed to reload state\n");
 222                 kfree(sc->state_buf, M_TEMP);
 223                 sc->state_buf = NULL;
 224         }
 225
 226         bus_generic_resume(dev);
 227         return 0;
 228 }
 229
 230 #ifdef FB_INSTALL_CDEV
 231
 232 static int
 233 isavga_open(struct dev_open_args *ap)
 234 {
 235         cdev_t dev = ap->a_head.a_dev;
 236
 237         return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_oflags,
 238                         ap->a_devtype, ap->a_cred);
 239 }
 240
 241 static int
 242 isavga_close(struct dev_close_args *ap)
 243 {
 244         cdev_t dev = ap->a_head.a_dev;
 245
 246         return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)),
 247                          ap->a_fflag, ap->a_devtype);
 248 }
 249
 250 static int
 251 isavga_read(struct dev_read_args *ap)
 252 {
 253         cdev_t dev = ap->a_head.a_dev;
 254
 255         return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
 256 }
 257
 258 static int
 259 isavga_write(struct dev_write_args *ap)
 260 {
 261         cdev_t dev = ap->a_head.a_dev;
 262
 263         return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
 264 }
 265
 266 static int
 267 isavga_ioctl(struct dev_ioctl_args *ap)
 268 {
 269         cdev_t dev = ap->a_head.a_dev;
 270
 271         return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
 272 }
 273
 274 static int
 275 isavga_mmap(struct dev_mmap_args *ap)
 276 {
 277         cdev_t dev = ap->a_head.a_dev;
 278
 279         ap->a_result = vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_offset, ap->a_nprot);
 280         return(0);
 281 }
 282
 283 #endif /* FB_INSTALL_CDEV */