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 #define VGA_ID          0x0009d041      /* PNP0900 */
  65
  66 static struct isa_pnp_id vga_ids[] = {
  67         { VGA_ID,       NULL },         /* PNP0900 */
  68         { 0,            NULL },
  69 };
  70
  71 static void
  72 vga_suspend(device_t dev)
  73 {
  74         vga_softc_t *sc;
  75         int nbytes;
  76
  77         sc = device_get_softc(dev);
  78
  79         /* Save the video state across the suspend. */
  80         if (sc->state_buf != NULL)
  81                 goto save_palette;
  82         nbytes = vidd_save_state(sc->adp, NULL, 0);
  83         if (nbytes <= 0)
  84                 goto save_palette;
  85         sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT);
  86         if (sc->state_buf == NULL)
  87                 goto save_palette;
  88         if (bootverbose)
  89                 device_printf(dev, "saving %d bytes of video state\n", nbytes);
  90         if (vidd_save_state(sc->adp, sc->state_buf, nbytes) != 0) {
  91                 device_printf(dev, "failed to save state (nbytes=%d)\n",
  92                     nbytes);
  93                 free(sc->state_buf, M_TEMP);
  94                 sc->state_buf = NULL;
  95         }
  96
  97 save_palette:
  98         /* Save the color palette across the suspend. */
  99         if (sc->pal_buf != NULL)
 100                 return;
 101         sc->pal_buf = malloc(256 * 3, M_TEMP, M_NOWAIT);
 102         if (sc->pal_buf == NULL)
 103                 return;
 104         if (bootverbose)
 105                 device_printf(dev, "saving color palette\n");
 106         if (vidd_save_palette(sc->adp, sc->pal_buf) != 0) {
 107                 device_printf(dev, "failed to save palette\n");
 108                 free(sc->pal_buf, M_TEMP);
 109                 sc->pal_buf = NULL;
 110         }
 111 }
 112
 113 static void
 114 vga_resume(device_t dev)
 115 {
 116         vga_softc_t *sc;
 117
 118         sc = device_get_softc(dev);
 119
 120         if (sc->state_buf != NULL) {
 121                 if (vidd_load_state(sc->adp, sc->state_buf) != 0)
 122                         device_printf(dev, "failed to reload state\n");
 123                 free(sc->state_buf, M_TEMP);
 124                 sc->state_buf = NULL;
 125         }
 126         if (sc->pal_buf != NULL) {
 127                 if (vidd_load_palette(sc->adp, sc->pal_buf) != 0)
 128                         device_printf(dev, "failed to reload palette\n");
 129                 free(sc->pal_buf, M_TEMP);
 130                 sc->pal_buf = NULL;
 131         }
 132 }
 133
 134 #define VGA_SOFTC(unit)         \
 135         ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
 136
 137 static devclass_t       isavga_devclass;
 138
 139 #ifdef FB_INSTALL_CDEV
 140
 141 static d_open_t         isavga_open;
 142 static d_close_t        isavga_close;
 143 static d_read_t         isavga_read;
 144 static d_write_t        isavga_write;
 145 static d_ioctl_t        isavga_ioctl;
 146 static d_mmap_t         isavga_mmap;
 147
 148 static struct cdevsw isavga_cdevsw = {
 149         .d_version =    D_VERSION,
 150         .d_flags =      D_NEEDGIANT,
 151         .d_open =       isavga_open,
 152         .d_close =      isavga_close,
 153         .d_read =       isavga_read,
 154         .d_write =      isavga_write,
 155         .d_ioctl =      isavga_ioctl,
 156         .d_mmap =       isavga_mmap,
 157         .d_name =       VGA_DRIVER_NAME,
 158 };
 159
 160 #endif /* FB_INSTALL_CDEV */
 161
 162 static void
 163 isavga_identify(driver_t *driver, device_t parent)
 164 {
 165         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0);
 166 }
 167
 168 static int
 169 isavga_probe(device_t dev)
 170 {
 171         video_adapter_t adp;
 172         int error;
 173
 174         /* No pnp support */
 175         if (isa_get_vendorid(dev))
 176                 return (ENXIO);
 177
 178         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
 179         if (error == 0) {
 180                 device_set_desc(dev, "Generic ISA VGA");
 181                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 182                                  adp.va_io_base, adp.va_io_size);
 183                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 184                                  adp.va_mem_base, adp.va_mem_size);
 185                 isa_set_vendorid(dev, VGA_ID);
 186                 isa_set_logicalid(dev, VGA_ID);
 187 #if 0
 188                 isa_set_port(dev, adp.va_io_base);
 189                 isa_set_portsize(dev, adp.va_io_size);
 190                 isa_set_maddr(dev, adp.va_mem_base);
 191                 isa_set_msize(dev, adp.va_mem_size);
 192 #endif
 193         }
 194         return (error);
 195 }
 196
 197 static int
 198 isavga_attach(device_t dev)
 199 {
 200         vga_softc_t *sc;
 201         int unit;
 202         int rid;
 203         int error;
 204
 205         unit = device_get_unit(dev);
 206         sc = device_get_softc(dev);
 207
 208         rid = 0;
 209         bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
 210                                   RF_ACTIVE | RF_SHAREABLE);
 211         rid = 0;
 212         bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
 213                                  RF_ACTIVE | RF_SHAREABLE);
 214
 215         error = vga_attach_unit(unit, sc, device_get_flags(dev));
 216         if (error)
 217                 return (error);
 218
 219 #ifdef FB_INSTALL_CDEV
 220         /* attach a virtual frame buffer device */
 221         error = fb_attach(VGA_MKMINOR(unit), sc->adp, &isavga_cdevsw);
 222         if (error)
 223                 return (error);
 224 #endif /* FB_INSTALL_CDEV */
 225
 226         if (0 && bootverbose)
 227                 vidd_diag(sc->adp, bootverbose);
 228
 229 #if 0 /* experimental */
 230         device_add_child(dev, "fb", -1);
 231         bus_generic_attach(dev);
 232 #endif
 233
 234         return (0);
 235 }
 236
 237 static int
 238 isavga_suspend(device_t dev)
 239 {
 240         int error;
 241
 242         error = bus_generic_suspend(dev);
 243         if (error != 0)
 244                 return (error);
 245         vga_suspend(dev);
 246
 247         return (error);
 248 }
 249
 250 static int
 251 isavga_resume(device_t dev)
 252 {
 253
 254         vga_resume(dev);
 255
 256         return (bus_generic_resume(dev));
 257 }
 258
 259 #ifdef FB_INSTALL_CDEV
 260
 261 static int
 262 isavga_open(struct cdev *dev, int flag, int mode, struct thread *td)
 263 {
 264         return (vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td));
 265 }
 266
 267 static int
 268 isavga_close(struct cdev *dev, int flag, int mode, struct thread *td)
 269 {
 270         return (vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td));
 271 }
 272
 273 static int
 274 isavga_read(struct cdev *dev, struct uio *uio, int flag)
 275 {
 276         return (vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag));
 277 }
 278
 279 static int
 280 isavga_write(struct cdev *dev, struct uio *uio, int flag)
 281 {
 282         return (vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag));
 283 }
 284
 285 static int
 286 isavga_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
 287 {
 288         return (vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td));
 289 }
 290
 291 static int
 292 isavga_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
 293     int prot, vm_memattr_t *memattr)
 294 {
 295         return (vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot,
 296             memattr));
 297 }
 298
 299 #endif /* FB_INSTALL_CDEV */
 300
 301 static device_method_t isavga_methods[] = {
 302         DEVMETHOD(device_identify,      isavga_identify),
 303         DEVMETHOD(device_probe,         isavga_probe),
 304         DEVMETHOD(device_attach,        isavga_attach),
 305         DEVMETHOD(device_suspend,       isavga_suspend),
 306         DEVMETHOD(device_resume,        isavga_resume),
 307
 308         DEVMETHOD_END
 309 };
 310
 311 static driver_t isavga_driver = {
 312         VGA_DRIVER_NAME,
 313         isavga_methods,
 314         sizeof(vga_softc_t),
 315 };
 316
 317 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
 318
 319 static devclass_t       vgapm_devclass;
 320
 321 static void
 322 vgapm_identify(driver_t *driver, device_t parent)
 323 {
 324
 325         if (device_get_flags(parent) != 0)
 326                 device_add_child(parent, "vgapm", 0);
 327 }
 328
 329 static int
 330 vgapm_probe(device_t dev)
 331 {
 332
 333         device_set_desc(dev, "VGA suspend/resume");
 334         device_quiet(dev);
 335
 336         return (BUS_PROBE_DEFAULT);
 337 }
 338
 339 static int
 340 vgapm_attach(device_t dev)
 341 {
 342
 343         bus_generic_probe(dev);
 344         bus_generic_attach(dev);
 345
 346         return (0);
 347 }
 348
 349 static int
 350 vgapm_suspend(device_t dev)
 351 {
 352         device_t vga_dev;
 353         int error;
 354
 355         error = bus_generic_suspend(dev);
 356         if (error != 0)
 357                 return (error);
 358         vga_dev = devclass_get_device(isavga_devclass, 0);
 359         if (vga_dev == NULL)
 360                 return (0);
 361         vga_suspend(vga_dev);
 362
 363         return (0);
 364 }
 365
 366 static int
 367 vgapm_resume(device_t dev)
 368 {
 369         device_t vga_dev;
 370
 371         vga_dev = devclass_get_device(isavga_devclass, 0);
 372         if (vga_dev != NULL)
 373                 vga_resume(vga_dev);
 374
 375         return (bus_generic_resume(dev));
 376 }
 377
 378 static device_method_t vgapm_methods[] = {
 379         DEVMETHOD(device_identify,      vgapm_identify),
 380         DEVMETHOD(device_probe,         vgapm_probe),
 381         DEVMETHOD(device_attach,        vgapm_attach),
 382         DEVMETHOD(device_suspend,       vgapm_suspend),
 383         DEVMETHOD(device_resume,        vgapm_resume),
 384         { 0, 0 }
 385 };
 386
 387 static driver_t vgapm_driver = {
 388         "vgapm",
 389         vgapm_methods,
 390         0
 391 };
 392
 393 DRIVER_MODULE(vgapm, vgapci, vgapm_driver, vgapm_devclass, 0, 0);
 394 ISA_PNP_INFO(vga_ids);