sys/isa/vga_isa.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   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
  29 #include <sys/cdefs.h>
  30 __FBSDID("$FreeBSD$");
  31
  32 #include "opt_vga.h"
  33 #include "opt_fb.h"
  34 #include "opt_syscons.h"        /* should be removed in the future, XXX */
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/kernel.h>
  39 #include <sys/malloc.h>
  40 #include <sys/module.h>
  41 #include <sys/conf.h>
  42 #include <sys/bus.h>
  43 #include <sys/fbio.h>
  44
  45 #include <machine/bus.h>
  46 #include <machine/resource.h>
  47
  48 #include <sys/rman.h>
  49
  50 #include <vm/vm.h>
  51 #include <vm/pmap.h>
  52
  53 #include <machine/md_var.h>
  54 #ifdef __i386__
  55 #include <machine/pc/bios.h>
  56 #endif
  57
  58 #include <dev/fb/fbreg.h>
  59 #include <dev/fb/vgareg.h>
  60
  61 #include <isa/isareg.h>
  62 #include <isa/isavar.h>
  63
  64 static void
  65 vga_suspend(device_t dev)
  66 {
  67         vga_softc_t *sc;
  68         int nbytes;
  69
  70         sc = device_get_softc(dev);
  71
  72         /* Save the video state across the suspend. */
  73         if (sc->state_buf != NULL)
  74                 goto save_palette;
  75         nbytes = vidd_save_state(sc->adp, NULL, 0);
  76         if (nbytes <= 0)
  77                 goto save_palette;
  78         sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT);
  79         if (sc->state_buf == NULL)
  80                 goto save_palette;
  81         if (bootverbose)
  82                 device_printf(dev, "saving %d bytes of video state\n", nbytes);
  83         if (vidd_save_state(sc->adp, sc->state_buf, nbytes) != 0) {
  84                 device_printf(dev, "failed to save state (nbytes=%d)\n",
  85                     nbytes);
  86                 free(sc->state_buf, M_TEMP);
  87                 sc->state_buf = NULL;
  88         }
  89
  90 save_palette:
  91         /* Save the color palette across the suspend. */
  92         if (sc->pal_buf != NULL)
  93                 return;
  94         sc->pal_buf = malloc(256 * 3, M_TEMP, M_NOWAIT);
  95         if (sc->pal_buf == NULL)
  96                 return;
  97         if (bootverbose)
  98                 device_printf(dev, "saving color palette\n");
  99         if (vidd_save_palette(sc->adp, sc->pal_buf) != 0) {
 100                 device_printf(dev, "failed to save palette\n");
 101                 free(sc->pal_buf, M_TEMP);
 102                 sc->pal_buf = NULL;
 103         }
 104 }
 105
 106 static void
 107 vga_resume(device_t dev)
 108 {
 109         vga_softc_t *sc;
 110
 111         sc = device_get_softc(dev);
 112
 113         if (sc->state_buf != NULL) {
 114                 if (vidd_load_state(sc->adp, sc->state_buf) != 0)
 115                         device_printf(dev, "failed to reload state\n");
 116                 free(sc->state_buf, M_TEMP);
 117                 sc->state_buf = NULL;
 118         }
 119         if (sc->pal_buf != NULL) {
 120                 if (vidd_load_palette(sc->adp, sc->pal_buf) != 0)
 121                         device_printf(dev, "failed to reload palette\n");
 122                 free(sc->pal_buf, M_TEMP);
 123                 sc->pal_buf = NULL;
 124         }
 125 }
 126
 127 #define VGA_SOFTC(unit)         \
 128         ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
 129
 130 static devclass_t       isavga_devclass;
 131
 132 #ifdef FB_INSTALL_CDEV
 133
 134 static d_open_t         isavga_open;
 135 static d_close_t        isavga_close;
 136 static d_read_t         isavga_read;
 137 static d_write_t        isavga_write;
 138 static d_ioctl_t        isavga_ioctl;
 139 static d_mmap_t         isavga_mmap;
 140
 141 static struct cdevsw isavga_cdevsw = {
 142         .d_version =    D_VERSION,
 143         .d_flags =      D_NEEDGIANT,
 144         .d_open =       isavga_open,
 145         .d_close =      isavga_close,
 146         .d_read =       isavga_read,
 147         .d_write =      isavga_write,
 148         .d_ioctl =      isavga_ioctl,
 149         .d_mmap =       isavga_mmap,
 150         .d_name =       VGA_DRIVER_NAME,
 151 };
 152
 153 #endif /* FB_INSTALL_CDEV */
 154
 155 static void
 156 isavga_identify(driver_t *driver, device_t parent)
 157 {
 158         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0);
 159 }
 160
 161 static int
 162 isavga_probe(device_t dev)
 163 {
 164         video_adapter_t adp;
 165         int error;
 166
 167         /* No pnp support */
 168         if (isa_get_vendorid(dev))
 169                 return (ENXIO);
 170
 171         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
 172         if (error == 0) {
 173                 device_set_desc(dev, "Generic ISA VGA");
 174                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 175                                  adp.va_io_base, adp.va_io_size);
 176                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 177                                  adp.va_mem_base, adp.va_mem_size);
 178                 isa_set_vendorid(dev, PNP_EISAID("PNP0900"));
 179 #if 0
 180                 isa_set_port(dev, adp.va_io_base);
 181                 isa_set_portsize(dev, adp.va_io_size);
 182                 isa_set_maddr(dev, adp.va_mem_base);
 183                 isa_set_msize(dev, adp.va_mem_size);
 184 #endif
 185         }
 186         return (error);
 187 }
 188
 189 static int
 190 isavga_attach(device_t dev)
 191 {
 192         vga_softc_t *sc;
 193         int unit;
 194         int rid;
 195         int error;
 196
 197         unit = device_get_unit(dev);
 198         sc = device_get_softc(dev);
 199
 200         rid = 0;
 201         bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
 202                                   RF_ACTIVE | RF_SHAREABLE);
 203         rid = 0;
 204         bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
 205                                  RF_ACTIVE | RF_SHAREABLE);
 206
 207         error = vga_attach_unit(unit, sc, device_get_flags(dev));
 208         if (error)
 209                 return (error);
 210
 211 #ifdef FB_INSTALL_CDEV
 212         /* attach a virtual frame buffer device */
 213         error = fb_attach(VGA_MKMINOR(unit), sc->adp, &isavga_cdevsw);
 214         if (error)
 215                 return (error);
 216 #endif /* FB_INSTALL_CDEV */
 217
 218         if (0 && bootverbose)
 219                 vidd_diag(sc->adp, bootverbose);
 220
 221 #if 0 /* experimental */
 222         device_add_child(dev, "fb", -1);
 223         bus_generic_attach(dev);
 224 #endif
 225
 226         return (0);
 227 }
 228
 229 static int
 230 isavga_suspend(device_t dev)
 231 {
 232         int error;
 233
 234         error = bus_generic_suspend(dev);
 235         if (error != 0)
 236                 return (error);
 237         vga_suspend(dev);
 238
 239         return (error);
 240 }
 241
 242 static int
 243 isavga_resume(device_t dev)
 244 {
 245
 246         vga_resume(dev);
 247
 248         return (bus_generic_resume(dev));
 249 }
 250
 251 #ifdef FB_INSTALL_CDEV
 252
 253 static int
 254 isavga_open(struct cdev *dev, int flag, int mode, struct thread *td)
 255 {
 256         return (vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td));
 257 }
 258
 259 static int
 260 isavga_close(struct cdev *dev, int flag, int mode, struct thread *td)
 261 {
 262         return (vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td));
 263 }
 264
 265 static int
 266 isavga_read(struct cdev *dev, struct uio *uio, int flag)
 267 {
 268         return (vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag));
 269 }
 270
 271 static int
 272 isavga_write(struct cdev *dev, struct uio *uio, int flag)
 273 {
 274         return (vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag));
 275 }
 276
 277 static int
 278 isavga_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
 279 {
 280         return (vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td));
 281 }
 282
 283 static int
 284 isavga_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
 285     int prot, vm_memattr_t *memattr)
 286 {
 287         return (vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot,
 288             memattr));
 289 }
 290
 291 #endif /* FB_INSTALL_CDEV */
 292
 293 static device_method_t isavga_methods[] = {
 294         DEVMETHOD(device_identify,      isavga_identify),
 295         DEVMETHOD(device_probe,         isavga_probe),
 296         DEVMETHOD(device_attach,        isavga_attach),
 297         DEVMETHOD(device_suspend,       isavga_suspend),
 298         DEVMETHOD(device_resume,        isavga_resume),
 299
 300         DEVMETHOD_END
 301 };
 302
 303 static driver_t isavga_driver = {
 304         VGA_DRIVER_NAME,
 305         isavga_methods,
 306         sizeof(vga_softc_t),
 307 };
 308
 309 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
 310
 311 static devclass_t       vgapm_devclass;
 312
 313 static void
 314 vgapm_identify(driver_t *driver, device_t parent)
 315 {
 316
 317         if (device_get_flags(parent) != 0)
 318                 device_add_child(parent, "vgapm", 0);
 319 }
 320
 321 static int
 322 vgapm_probe(device_t dev)
 323 {
 324
 325         device_set_desc(dev, "VGA suspend/resume");
 326         device_quiet(dev);
 327
 328         return (BUS_PROBE_DEFAULT);
 329 }
 330
 331 static int
 332 vgapm_attach(device_t dev)
 333 {
 334
 335         bus_generic_probe(dev);
 336         bus_generic_attach(dev);
 337
 338         return (0);
 339 }
 340
 341 static int
 342 vgapm_suspend(device_t dev)
 343 {
 344         device_t vga_dev;
 345         int error;
 346
 347         error = bus_generic_suspend(dev);
 348         if (error != 0)
 349                 return (error);
 350         vga_dev = devclass_get_device(isavga_devclass, 0);
 351         if (vga_dev == NULL)
 352                 return (0);
 353         vga_suspend(vga_dev);
 354
 355         return (0);
 356 }
 357
 358 static int
 359 vgapm_resume(device_t dev)
 360 {
 361         device_t vga_dev;
 362
 363         vga_dev = devclass_get_device(isavga_devclass, 0);
 364         if (vga_dev != NULL)
 365                 vga_resume(vga_dev);
 366
 367         return (bus_generic_resume(dev));
 368 }
 369
 370 static device_method_t vgapm_methods[] = {
 371         DEVMETHOD(device_identify,      vgapm_identify),
 372         DEVMETHOD(device_probe,         vgapm_probe),
 373         DEVMETHOD(device_attach,        vgapm_attach),
 374         DEVMETHOD(device_suspend,       vgapm_suspend),
 375         DEVMETHOD(device_resume,        vgapm_resume),
 376         { 0, 0 }
 377 };
 378
 379 static driver_t vgapm_driver = {
 380         "vgapm",
 381         vgapm_methods,
 382         0
 383 };
 384
 385 DRIVER_MODULE(vgapm, vgapci, vgapm_driver, vgapm_devclass, 0, 0);