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_fb.h"
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/kernel.h>
  36 #include <sys/malloc.h>
  37 #include <sys/conf.h>
  38 #include <sys/device.h>
  39 #include <sys/bus.h>
  40 #include <sys/fbio.h>
  41 #include <sys/rman.h>
  42 #include <sys/thread.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         DEVMETHOD_END
  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, NULL, NULL);
  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, -1);
 120                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 121                                  adp.va_mem_base, adp.va_mem_size, -1);
 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         sc->devt = make_dev(&isavga_ops, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit));
 157         reference_dev(sc->devt);
 158         error = fb_attach(sc->devt, sc->adp);
 159         if (error)
 160                 return error;
 161 #endif /* FB_INSTALL_CDEV */
 162
 163         if (bootverbose)
 164                 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
 165
 166 #if 0 /* experimental */
 167         device_add_child(dev, "fb", -1);
 168         bus_generic_attach(dev);
 169 #endif
 170
 171         return 0;
 172 }
 173
 174 static int
 175 isavga_suspend(device_t dev)
 176 {
 177         vga_softc_t *sc;
 178         int err, nbytes;
 179
 180         sc = device_get_softc(dev);
 181         err = bus_generic_suspend(dev);
 182         if (err)
 183                 return (err);
 184
 185         /* Save the video state across the suspend. */
 186         if (sc->state_buf != NULL) {
 187                 kfree(sc->state_buf, M_TEMP);
 188                 sc->state_buf = NULL;
 189         }
 190         nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0);
 191         if (nbytes <= 0)
 192                 return (0);
 193         sc->state_buf = kmalloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO);
 194         if (sc->state_buf == NULL)
 195                 return (0);
 196         if (bootverbose)
 197                 device_printf(dev, "saving %d bytes of video state\n", nbytes);
 198         lwkt_gettoken(&vga_token);
 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         lwkt_reltoken(&vga_token);
 207         return (0);
 208 }
 209
 210 static int
 211 isavga_resume(device_t dev)
 212 {
 213         vga_softc_t *sc;
 214
 215         sc = device_get_softc(dev);
 216         if (sc->state_buf != NULL) {
 217                 if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp,
 218                     sc->state_buf) != 0)
 219                         device_printf(dev, "failed to reload state\n");
 220                 kfree(sc->state_buf, M_TEMP);
 221                 sc->state_buf = NULL;
 222         }
 223
 224         bus_generic_resume(dev);
 225         return 0;
 226 }
 227
 228 #ifdef FB_INSTALL_CDEV
 229
 230 static int
 231 isavga_open(struct dev_open_args *ap)
 232 {
 233         cdev_t dev = ap->a_head.a_dev;
 234
 235         return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_oflags,
 236                         ap->a_devtype, ap->a_cred);
 237 }
 238
 239 static int
 240 isavga_close(struct dev_close_args *ap)
 241 {
 242         cdev_t dev = ap->a_head.a_dev;
 243
 244         return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)),
 245                          ap->a_fflag, ap->a_devtype);
 246 }
 247
 248 static int
 249 isavga_read(struct dev_read_args *ap)
 250 {
 251         cdev_t dev = ap->a_head.a_dev;
 252
 253         return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
 254 }
 255
 256 static int
 257 isavga_write(struct dev_write_args *ap)
 258 {
 259         cdev_t dev = ap->a_head.a_dev;
 260
 261         return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
 262 }
 263
 264 static int
 265 isavga_ioctl(struct dev_ioctl_args *ap)
 266 {
 267         cdev_t dev = ap->a_head.a_dev;
 268
 269         return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
 270 }
 271
 272 static int
 273 isavga_mmap(struct dev_mmap_args *ap)
 274 {
 275         cdev_t dev = ap->a_head.a_dev;
 276
 277         ap->a_result = vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)),
 278                                 ap->a_offset, ap->a_nprot);
 279         return(0);
 280 }
 281
 282 #endif /* FB_INSTALL_CDEV */