fb.c

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    1 /*-
    2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer as
   10  *    the first lines of this file unmodified.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission.
   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: releng/5.0/sys/dev/fb/fb.c 94617 2002-04-13 22:34:16Z obrien $
   29  */
   30 
   31 #include "opt_fb.h"
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/conf.h>
   36 #include <sys/bus.h>
   37 #include <sys/kernel.h>
   38 #include <sys/malloc.h>
   39 #include <sys/module.h>
   40 #include <sys/uio.h>
   41 #include <sys/fbio.h>
   42 #include <sys/linker_set.h>
   43 
   44 #include <vm/vm.h>
   45 #include <vm/pmap.h>
   46 
   47 #include <dev/fb/fbreg.h>
   48 
   49 SET_DECLARE(videodriver_set, const video_driver_t);
   50 
   51 /* local arrays */
   52 
   53 /*
   54  * We need at least one entry each in order to initialize a video card
   55  * for the kernel console.  The arrays will be increased dynamically
   56  * when necessary.
   57  */
   58 
   59 static int              vid_malloc;
   60 static int              adapters = 1;
   61 static video_adapter_t  *adp_ini;
   62 static video_adapter_t  **adapter = &adp_ini;
   63 static video_switch_t   *vidsw_ini;
   64        video_switch_t   **vidsw = &vidsw_ini;
   65 
   66 #ifdef FB_INSTALL_CDEV
   67 static struct cdevsw    *vidcdevsw_ini;
   68 static struct cdevsw    **vidcdevsw = &vidcdevsw_ini;
   69 #endif
   70 
   71 #define ARRAY_DELTA     4
   72 
   73 static int
   74 vid_realloc_array(void)
   75 {
   76         video_adapter_t **new_adp;
   77         video_switch_t **new_vidsw;
   78 #ifdef FB_INSTALL_CDEV
   79         struct cdevsw **new_cdevsw;
   80 #endif
   81         int newsize;
   82         int s;
   83 
   84         if (!vid_malloc)
   85                 return ENOMEM;
   86 
   87         s = spltty();
   88         newsize = ((adapters + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA;
   89         new_adp = malloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO);
   90         new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF,
   91             M_WAITOK | M_ZERO);
   92 #ifdef FB_INSTALL_CDEV
   93         new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF,
   94             M_WAITOK | M_ZERO);
   95 #endif
   96         bcopy(adapter, new_adp, sizeof(*adapter)*adapters);
   97         bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters);
   98 #ifdef FB_INSTALL_CDEV
   99         bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters);
  100 #endif
  101         if (adapters > 1) {
  102                 free(adapter, M_DEVBUF);
  103                 free(vidsw, M_DEVBUF);
  104 #ifdef FB_INSTALL_CDEV
  105                 free(vidcdevsw, M_DEVBUF);
  106 #endif
  107         }
  108         adapter = new_adp;
  109         vidsw = new_vidsw;
  110 #ifdef FB_INSTALL_CDEV
  111         vidcdevsw = new_cdevsw;
  112 #endif
  113         adapters = newsize;
  114         splx(s);
  115 
  116         if (bootverbose)
  117                 printf("fb: new array size %d\n", adapters);
  118 
  119         return 0;
  120 }
  121 
  122 static void
  123 vid_malloc_init(void *arg)
  124 {
  125         vid_malloc = TRUE;
  126 }
  127 
  128 SYSINIT(vid_mem, SI_SUB_KMEM, SI_ORDER_ANY, vid_malloc_init, NULL);
  129 
  130 /*
  131  * Low-level frame buffer driver functions
  132  * frame buffer subdrivers, such as the VGA driver, call these functions
  133  * to initialize the video_adapter structure and register it to the virtual
  134  * frame buffer driver `fb'.
  135  */
  136 
  137 /* initialize the video_adapter_t structure */
  138 void
  139 vid_init_struct(video_adapter_t *adp, char *name, int type, int unit)
  140 {
  141         adp->va_flags = 0;
  142         adp->va_name = name;
  143         adp->va_type = type;
  144         adp->va_unit = unit;
  145 }
  146 
  147 /* Register a video adapter */
  148 int
  149 vid_register(video_adapter_t *adp)
  150 {
  151         const video_driver_t **list;
  152         const video_driver_t *p;
  153         int index;
  154 
  155         for (index = 0; index < adapters; ++index) {
  156                 if (adapter[index] == NULL)
  157                         break;
  158         }
  159         if (index >= adapters) {
  160                 if (vid_realloc_array())
  161                         return -1;
  162         }
  163 
  164         adp->va_index = index;
  165         adp->va_token = NULL;
  166         SET_FOREACH(list, videodriver_set) {
  167                 p = *list;
  168                 if (strcmp(p->name, adp->va_name) == 0) {
  169                         adapter[index] = adp;
  170                         vidsw[index] = p->vidsw;
  171                         return index;
  172                 }
  173         }
  174 
  175         return -1;
  176 }
  177 
  178 int
  179 vid_unregister(video_adapter_t *adp)
  180 {
  181         if ((adp->va_index < 0) || (adp->va_index >= adapters))
  182                 return ENOENT;
  183         if (adapter[adp->va_index] != adp)
  184                 return ENOENT;
  185 
  186         adapter[adp->va_index] = NULL;
  187         vidsw[adp->va_index] = NULL;
  188         return 0;
  189 }
  190 
  191 /* Get video I/O function table */
  192 video_switch_t
  193 *vid_get_switch(char *name)
  194 {
  195         const video_driver_t **list;
  196         const video_driver_t *p;
  197 
  198         SET_FOREACH(list, videodriver_set) {
  199                 p = *list;
  200                 if (strcmp(p->name, name) == 0)
  201                         return p->vidsw;
  202         }
  203 
  204         return NULL;
  205 }
  206 
  207 /*
  208  * Video card client functions
  209  * Video card clients, such as the console driver `syscons' and the frame
  210  * buffer cdev driver, use these functions to claim and release a card for
  211  * exclusive use.
  212  */
  213 
  214 /* find the video card specified by a driver name and a unit number */
  215 int
  216 vid_find_adapter(char *driver, int unit)
  217 {
  218         int i;
  219 
  220         for (i = 0; i < adapters; ++i) {
  221                 if (adapter[i] == NULL)
  222                         continue;
  223                 if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver))
  224                         continue;
  225                 if ((unit != -1) && (adapter[i]->va_unit != unit))
  226                         continue;
  227                 return i;
  228         }
  229         return -1;
  230 }
  231 
  232 /* allocate a video card */
  233 int
  234 vid_allocate(char *driver, int unit, void *id)
  235 {
  236         int index;
  237         int s;
  238 
  239         s = spltty();
  240         index = vid_find_adapter(driver, unit);
  241         if (index >= 0) {
  242                 if (adapter[index]->va_token) {
  243                         splx(s);
  244                         return -1;
  245                 }
  246                 adapter[index]->va_token = id;
  247         }
  248         splx(s);
  249         return index;
  250 }
  251 
  252 int
  253 vid_release(video_adapter_t *adp, void *id)
  254 {
  255         int error;
  256         int s;
  257 
  258         s = spltty();
  259         if (adp->va_token == NULL) {
  260                 error = EINVAL;
  261         } else if (adp->va_token != id) {
  262                 error = EPERM;
  263         } else {
  264                 adp->va_token = NULL;
  265                 error = 0;
  266         }
  267         splx(s);
  268         return error;
  269 }
  270 
  271 /* Get a video adapter structure */
  272 video_adapter_t
  273 *vid_get_adapter(int index)
  274 {
  275         if ((index < 0) || (index >= adapters))
  276                 return NULL;
  277         return adapter[index];
  278 }
  279 
  280 /* Configure drivers: this is a backdoor for the console driver XXX */
  281 int
  282 vid_configure(int flags)
  283 {
  284         const video_driver_t **list;
  285         const video_driver_t *p;
  286 
  287         SET_FOREACH(list, videodriver_set) {
  288                 p = *list;
  289                 if (p->configure != NULL)
  290                         (*p->configure)(flags);
  291         }
  292 
  293         return 0;
  294 }
  295 
  296 /*
  297  * Virtual frame buffer cdev driver functions
  298  * The virtual frame buffer driver dispatches driver functions to
  299  * appropriate subdrivers.
  300  */
  301 
  302 #define FB_DRIVER_NAME  "fb"
  303 
  304 #ifdef FB_INSTALL_CDEV
  305 
  306 #if experimental
  307 
  308 static devclass_t       fb_devclass;
  309 
  310 static int              fbprobe(device_t dev);
  311 static int              fbattach(device_t dev);
  312 
  313 static device_method_t fb_methods[] = {
  314         DEVMETHOD(device_probe,         fbprobe),
  315         DEVMETHOD(device_attach,        fbattach),
  316 
  317         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  318         { 0, 0 }
  319 };
  320 
  321 static driver_t fb_driver = {
  322         FB_DRIVER_NAME,
  323         fb_methods,
  324         0,
  325 };
  326 
  327 static int
  328 fbprobe(device_t dev)
  329 {
  330         int unit;
  331 
  332         unit = device_get_unit(dev);
  333         if (unit >= adapters)
  334                 return ENXIO;
  335         if (adapter[unit] == NULL)
  336                 return ENXIO;
  337 
  338         device_set_desc(dev, "generic frame buffer");
  339         return 0;
  340 }
  341 
  342 static int
  343 fbattach(device_t dev)
  344 {
  345         printf("fbattach: about to attach children\n");
  346         bus_generic_attach(dev);
  347         return 0;
  348 }
  349 
  350 #endif /* experimental */
  351 
  352 #define FB_UNIT(dev)    minor(dev)
  353 #define FB_MKMINOR(unit) (u)
  354 
  355 static d_open_t         fbopen;
  356 static d_close_t        fbclose;
  357 static d_read_t         fbread;
  358 static d_write_t        fbwrite;
  359 static d_ioctl_t        fbioctl;
  360 static d_mmap_t         fbmmap;
  361 
  362 #define CDEV_MAJOR      123     /* XXX */
  363 
  364 static struct cdevsw fb_cdevsw = {
  365         /* open */      fbopen,
  366         /* close */     fbclose,
  367         /* read */      fbread,
  368         /* write */     fbwrite,
  369         /* ioctl */     fbioctl,
  370         /* poll */      nopoll,
  371         /* mmap */      fbmmap,
  372         /* strategy */  nostrategy,
  373         /* name */      FB_DRIVER_NAME,
  374         /* maj */       CDEV_MAJOR,
  375         /* dump */      nodump,
  376         /* psize */     nopsize,
  377         /* flags */     0,
  378 };
  379 
  380 
  381 static int
  382 fb_modevent(module_t mod, int type, void *data) 
  383 { 
  384 
  385         switch (type) { 
  386         case MOD_LOAD: 
  387                 cdevsw_add(&fb_cdevsw);
  388                 break; 
  389         case MOD_UNLOAD: 
  390                 printf("fb module unload - not possible for this module type\n"); 
  391                 return EINVAL; 
  392         } 
  393         return 0; 
  394 } 
  395 
  396 static moduledata_t fb_mod = { 
  397         "fb", 
  398         fb_modevent, 
  399         NULL
  400 }; 
  401 
  402 DECLARE_MODULE(fb, fb_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
  403 
  404 int
  405 fb_attach(dev_t dev, video_adapter_t *adp, struct cdevsw *cdevsw)
  406 {
  407         int s;
  408 
  409         if (adp->va_index >= adapters)
  410                 return EINVAL;
  411         if (adapter[adp->va_index] != adp)
  412                 return EINVAL;
  413 
  414         s = spltty();
  415         adp->va_minor = minor(dev);
  416         vidcdevsw[adp->va_index] = cdevsw;
  417         splx(s);
  418 
  419         printf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit);
  420         return 0;
  421 }
  422 
  423 int
  424 fb_detach(dev_t dev, video_adapter_t *adp, struct cdevsw *cdevsw)
  425 {
  426         int s;
  427 
  428         if (adp->va_index >= adapters)
  429                 return EINVAL;
  430         if (adapter[adp->va_index] != adp)
  431                 return EINVAL;
  432         if (vidcdevsw[adp->va_index] != cdevsw)
  433                 return EINVAL;
  434 
  435         s = spltty();
  436         vidcdevsw[adp->va_index] = NULL;
  437         splx(s);
  438         return 0;
  439 }
  440 
  441 static int
  442 fbopen(dev_t dev, int flag, int mode, struct thread *td)
  443 {
  444         int unit;
  445 
  446         unit = FB_UNIT(dev);
  447         if (unit >= adapters)
  448                 return ENXIO;
  449         if (vidcdevsw[unit] == NULL)
  450                 return ENXIO;
  451         return (*vidcdevsw[unit]->d_open)(makedev(0, adapter[unit]->va_minor),
  452                                           flag, mode, td);
  453 }
  454 
  455 static int
  456 fbclose(dev_t dev, int flag, int mode, struct thread *td)
  457 {
  458         int unit;
  459 
  460         unit = FB_UNIT(dev);
  461         if (vidcdevsw[unit] == NULL)
  462                 return ENXIO;
  463         return (*vidcdevsw[unit]->d_close)(makedev(0, adapter[unit]->va_minor),
  464                                            flag, mode, td);
  465 }
  466 
  467 static int
  468 fbread(dev_t dev, struct uio *uio, int flag)
  469 {
  470         int unit;
  471 
  472         unit = FB_UNIT(dev);
  473         if (vidcdevsw[unit] == NULL)
  474                 return ENXIO;
  475         return (*vidcdevsw[unit]->d_read)(makedev(0, adapter[unit]->va_minor),
  476                                           uio, flag);
  477 }
  478 
  479 static int
  480 fbwrite(dev_t dev, struct uio *uio, int flag)
  481 {
  482         int unit;
  483 
  484         unit = FB_UNIT(dev);
  485         if (vidcdevsw[unit] == NULL)
  486                 return ENXIO;
  487         return (*vidcdevsw[unit]->d_write)(makedev(0, adapter[unit]->va_minor),
  488                                            uio, flag);
  489 }
  490 
  491 static int
  492 fbioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
  493 {
  494         int unit;
  495 
  496         unit = FB_UNIT(dev);
  497         if (vidcdevsw[unit] == NULL)
  498                 return ENXIO;
  499         return (*vidcdevsw[unit]->d_ioctl)(makedev(0, adapter[unit]->va_minor),
  500                                            cmd, arg, flag, td);
  501 }
  502 
  503 static int
  504 fbmmap(dev_t dev, vm_offset_t offset, int nprot)
  505 {
  506         int unit;
  507 
  508         unit = FB_UNIT(dev);
  509         if (vidcdevsw[unit] == NULL)
  510                 return ENXIO;
  511         return (*vidcdevsw[unit]->d_mmap)(makedev(0, adapter[unit]->va_minor),
  512                                           offset, nprot);
  513 }
  514 
  515 #if experimental
  516 DEV_DRIVER_MODULE(fb, ???, fb_driver, fb_devclass, fb_cdevsw, 0, 0);
  517 #endif
  518 
  519 /*
  520  * Generic frame buffer cdev driver functions
  521  * Frame buffer subdrivers may call these functions to implement common
  522  * driver functions.
  523  */
  524 
  525 int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
  526               struct thread *td)
  527 {
  528         int s;
  529 
  530         s = spltty();
  531         if (!(sc->gfb_flags & FB_OPEN))
  532                 sc->gfb_flags |= FB_OPEN;
  533         splx(s);
  534         return 0;
  535 }
  536 
  537 int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
  538                struct thread *td)
  539 {
  540         int s;
  541 
  542         s = spltty();
  543         sc->gfb_flags &= ~FB_OPEN;
  544         splx(s);
  545         return 0;
  546 }
  547 
  548 int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
  549               int flag)
  550 {
  551         int size;
  552         int offset;
  553         int error;
  554         int len;
  555 
  556         error = 0;
  557         size = adp->va_buffer_size/adp->va_info.vi_planes;
  558         while (uio->uio_resid > 0) {
  559                 if (uio->uio_offset >= size)
  560                         break;
  561                 offset = uio->uio_offset%adp->va_window_size;
  562                 len = imin(uio->uio_resid, size - uio->uio_offset);
  563                 len = imin(len, adp->va_window_size - offset);
  564                 if (len <= 0)
  565                         break;
  566                 (*vidsw[adp->va_index]->set_win_org)(adp, uio->uio_offset);
  567                 error = uiomove((caddr_t)(adp->va_window + offset), len, uio);
  568                 if (error)
  569                         break;
  570         }
  571         return error;
  572 }
  573 
  574 int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
  575                int flag)
  576 {
  577         return ENODEV;
  578 }
  579 
  580 int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd,
  581                caddr_t arg, int flag, struct thread *td)
  582 {
  583         int error;
  584 
  585         if (adp == NULL)        /* XXX */
  586                 return ENXIO;
  587         error = (*vidsw[adp->va_index]->ioctl)(adp, cmd, arg);
  588         if (error == ENOIOCTL)
  589                 error = ENODEV;
  590         return error;
  591 }
  592 
  593 int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset,
  594               int prot)
  595 {
  596         return (*vidsw[adp->va_index]->mmap)(adp, offset, prot);
  597 }
  598 
  599 #endif /* FB_INSTALL_CDEV */
  600 
  601 static char
  602 *adapter_name(int type)
  603 {
  604     static struct {
  605         int type;
  606         char *name;
  607     } names[] = {
  608         { KD_MONO,      "MDA" },
  609         { KD_HERCULES,  "Hercules" },
  610         { KD_CGA,       "CGA" },
  611         { KD_EGA,       "EGA" },
  612         { KD_VGA,       "VGA" },
  613         { KD_PC98,      "PC-98x1" },
  614         { KD_TGA,       "TGA" },
  615         { -1,           "Unknown" },
  616     };
  617     int i;
  618 
  619     for (i = 0; names[i].type != -1; ++i)
  620         if (names[i].type == type)
  621             break;
  622     return names[i].name;
  623 }
  624 
  625 /*
  626  * Generic low-level frame buffer functions
  627  * The low-level functions in the frame buffer subdriver may use these
  628  * functions.
  629  */
  630 
  631 void
  632 fb_dump_adp_info(char *driver, video_adapter_t *adp, int level)
  633 {
  634     if (level <= 0)
  635         return;
  636 
  637     printf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n", 
  638            FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name,
  639            adapter_name(adp->va_type), adp->va_type, adp->va_flags);
  640     printf("%s%d: port:0x%lx-0x%lx, crtc:0x%lx, mem:0x%lx 0x%x\n",
  641            FB_DRIVER_NAME, adp->va_index, (u_long)adp->va_io_base, 
  642            (u_long)adp->va_io_base + adp->va_io_size - 1,
  643            (u_long)adp->va_crtc_addr, (u_long)adp->va_mem_base, 
  644            adp->va_mem_size);
  645     printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n",
  646            FB_DRIVER_NAME, adp->va_index,
  647            adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
  648     printf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n",
  649            FB_DRIVER_NAME, adp->va_index, 
  650            (void *)adp->va_window, (int)adp->va_window_size/1024,
  651            (int)adp->va_window_gran/1024, (void *)adp->va_buffer,
  652            (int)adp->va_buffer_size/1024);
  653 }
  654 
  655 void
  656 fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info,
  657                   int level)
  658 {
  659     if (level <= 0)
  660         return;
  661 
  662     printf("%s%d: %s, mode:%d, flags:0x%x ", 
  663            driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags);
  664     if (info->vi_flags & V_INFO_GRAPHICS)
  665         printf("G %dx%dx%d, %d plane(s), font:%dx%d, ",
  666                info->vi_width, info->vi_height, 
  667                info->vi_depth, info->vi_planes, 
  668                info->vi_cwidth, info->vi_cheight); 
  669     else
  670         printf("T %dx%d, font:%dx%d, ",
  671                info->vi_width, info->vi_height, 
  672                info->vi_cwidth, info->vi_cheight); 
  673     printf("win:0x%lx\n", (u_long)info->vi_window);
  674 }
  675 
  676 int
  677 fb_type(int adp_type)
  678 {
  679         static struct {
  680                 int     fb_type;
  681                 int     va_type;
  682         } types[] = {
  683                 { FBTYPE_MDA,           KD_MONO },
  684                 { FBTYPE_HERCULES,      KD_HERCULES },
  685                 { FBTYPE_CGA,           KD_CGA },
  686                 { FBTYPE_EGA,           KD_EGA },
  687                 { FBTYPE_VGA,           KD_VGA },
  688                 { FBTYPE_PC98,          KD_PC98 },
  689                 { FBTYPE_TGA,           KD_TGA },
  690         };
  691         int i;
  692 
  693         for (i = 0; i < sizeof(types)/sizeof(types[0]); ++i) {
  694                 if (types[i].va_type == adp_type)
  695                         return types[i].fb_type;
  696         }
  697         return -1;
  698 }
  699 
  700 int
  701 fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
  702 {
  703         int error;
  704         int s;
  705 
  706         /* assert(adp != NULL) */
  707 
  708         error = 0;
  709         s = spltty();
  710 
  711         switch (cmd) {
  712 
  713         case FBIO_ADAPTER:      /* get video adapter index */
  714                 *(int *)arg = adp->va_index;
  715                 break;
  716 
  717         case FBIO_ADPTYPE:      /* get video adapter type */
  718                 *(int *)arg = adp->va_type;
  719                 break;
  720 
  721         case FBIO_ADPINFO:      /* get video adapter info */
  722                 ((video_adapter_info_t *)arg)->va_index = adp->va_index;
  723                 ((video_adapter_info_t *)arg)->va_type = adp->va_type;
  724                 bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name,
  725                       imin(strlen(adp->va_name) + 1,
  726                            sizeof(((video_adapter_info_t *)arg)->va_name))); 
  727                 ((video_adapter_info_t *)arg)->va_unit = adp->va_unit;
  728                 ((video_adapter_info_t *)arg)->va_flags = adp->va_flags;
  729                 ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base;
  730                 ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size;
  731                 ((video_adapter_info_t *)arg)->va_crtc_addr = adp->va_crtc_addr;
  732                 ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base;
  733                 ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size;
  734                 ((video_adapter_info_t *)arg)->va_window
  735 #ifdef __i386__
  736                         = vtophys(adp->va_window);
  737 #else
  738                         = adp->va_window;
  739 #endif
  740                 ((video_adapter_info_t *)arg)->va_window_size
  741                         = adp->va_window_size;
  742                 ((video_adapter_info_t *)arg)->va_window_gran
  743                         = adp->va_window_gran;
  744                 ((video_adapter_info_t *)arg)->va_window_orig
  745                         = adp->va_window_orig;
  746                 ((video_adapter_info_t *)arg)->va_unused0
  747 #ifdef __i386__
  748                         = (adp->va_buffer) ? vtophys(adp->va_buffer) : 0;
  749 #else
  750                         = adp->va_buffer;
  751 #endif
  752                 ((video_adapter_info_t *)arg)->va_buffer_size
  753                         = adp->va_buffer_size;
  754                 ((video_adapter_info_t *)arg)->va_mode = adp->va_mode;
  755                 ((video_adapter_info_t *)arg)->va_initial_mode
  756                         = adp->va_initial_mode;
  757                 ((video_adapter_info_t *)arg)->va_initial_bios_mode
  758                         = adp->va_initial_bios_mode;
  759                 ((video_adapter_info_t *)arg)->va_line_width
  760                         = adp->va_line_width;
  761                 ((video_adapter_info_t *)arg)->va_disp_start.x
  762                         = adp->va_disp_start.x;
  763                 ((video_adapter_info_t *)arg)->va_disp_start.y
  764                         = adp->va_disp_start.y;
  765                 break;
  766 
  767         case FBIO_MODEINFO:     /* get mode information */
  768                 error = (*vidsw[adp->va_index]->get_info)(adp, 
  769                                 ((video_info_t *)arg)->vi_mode,
  770                                 (video_info_t *)arg); 
  771                 if (error)
  772                         error = ENODEV;
  773                 break;
  774 
  775         case FBIO_FINDMODE:     /* find a matching video mode */
  776                 error = (*vidsw[adp->va_index]->query_mode)(adp, 
  777                                 (video_info_t *)arg); 
  778                 break;
  779 
  780         case FBIO_GETMODE:      /* get video mode */
  781                 *(int *)arg = adp->va_mode;
  782                 break;
  783 
  784         case FBIO_SETMODE:      /* set video mode */
  785                 error = (*vidsw[adp->va_index]->set_mode)(adp, *(int *)arg);
  786                 if (error)
  787                         error = ENODEV; /* EINVAL? */
  788                 break;
  789 
  790         case FBIO_GETWINORG:    /* get frame buffer window origin */
  791                 *(u_int *)arg = adp->va_window_orig;
  792                 break;
  793 
  794         case FBIO_GETDISPSTART: /* get display start address */
  795                 ((video_display_start_t *)arg)->x = adp->va_disp_start.x;
  796                 ((video_display_start_t *)arg)->y = adp->va_disp_start.y;
  797                 break;
  798 
  799         case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
  800                 *(u_int *)arg = adp->va_line_width;
  801                 break;
  802 
  803         case FBIO_BLANK:        /* blank display */
  804                 error = (*vidsw[adp->va_index]->blank_display)(adp, *(int *)arg);
  805                 break;
  806 
  807         case FBIO_GETPALETTE:   /* get color palette */
  808         case FBIO_SETPALETTE:   /* set color palette */
  809                 /* XXX */
  810 
  811         case FBIOPUTCMAP:
  812         case FBIOGETCMAP:
  813         case FBIOPUTCMAPI:
  814         case FBIOGETCMAPI:
  815                 /* XXX */
  816 
  817         case FBIO_SETWINORG:    /* set frame buffer window origin */
  818         case FBIO_SETDISPSTART: /* set display start address */
  819         case FBIO_SETLINEWIDTH: /* set scan line width in pixel */
  820 
  821         case FBIOGTYPE:
  822         case FBIOGATTR:
  823         case FBIOSVIDEO:
  824         case FBIOGVIDEO:
  825         case FBIOVERTICAL:
  826         case FBIOSCURSOR:
  827         case FBIOGCURSOR:
  828         case FBIOSCURPOS:
  829         case FBIOGCURPOS:
  830         case FBIOGCURMAX:
  831         case FBIOMONINFO:
  832         case FBIOGXINFO:
  833 
  834         default:
  835                 error = ENODEV;
  836                 break;
  837         }
  838 
  839         splx(s);
  840         return error;
  841 }
Cache object: e907171eaedb21807173799ff2e98f09
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FreeBSD/Linux Kernel Cross Reference sys/dev/fb/fb.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/fb.c
