vga_isa.c

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    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);
Cache object: 46b923f0bf56358c314bc7e16be7f2f4
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FreeBSD/Linux Kernel Cross Reference sys/isa/vga_isa.c

FreeBSD/Linux Kernel Cross Reference
sys/isa/vga_isa.c
