fb.c

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    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  * 3. The name of the author may not be used to endorse or promote products
   17  *    derived from this software without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
   20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   22  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   29  *
   30  * $FreeBSD: src/sys/dev/fb/fb.c,v 1.11.2.2 2000/08/02 22:35:22 peter Exp $
   31  */
   32 
   33 #include "opt_fb.h"
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/conf.h>
   38 #include <sys/bus.h>
   39 #include <sys/kernel.h>
   40 #include <sys/malloc.h>
   41 #include <sys/uio.h>
   42 #include <sys/fbio.h>
   43 #include <sys/linker_set.h>
   44 #include <sys/device.h>
   45 #include <sys/thread2.h>
   46 
   47 #include <vm/vm.h>
   48 #include <vm/pmap.h>
   49 
   50 #include "fbreg.h"
   51 
   52 SET_DECLARE(videodriver_set, const video_driver_t);
   53 
   54 /* local arrays */
   55 
   56 /*
   57  * We need at least one entry each in order to initialize a video card
   58  * for the kernel console.  The arrays will be increased dynamically
   59  * when necessary.
   60  */
   61 
   62 static int              vid_malloc;
   63 static int              adapters = 1;
   64 static video_adapter_t  *adp_ini;
   65 static video_adapter_t  **adapter = &adp_ini;
   66 static video_switch_t   *vidsw_ini;
   67        video_switch_t   **vidsw = &vidsw_ini;
   68 
   69 #ifdef FB_INSTALL_CDEV
   70 static cdev_t   vidcdevsw_ini;
   71 static cdev_t   *vidcdevsw = &vidcdevsw_ini;
   72 #endif
   73 
   74 #define ARRAY_DELTA     4
   75 
   76 static int
   77 vid_realloc_array(void)
   78 {
   79         video_adapter_t **new_adp;
   80         video_switch_t **new_vidsw;
   81 #ifdef FB_INSTALL_CDEV
   82         cdev_t *new_cdevsw;
   83 #endif
   84         int newsize;
   85 
   86         if (!vid_malloc)
   87                 return ENOMEM;
   88 
   89         crit_enter();
   90         newsize = ((adapters + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA;
   91         new_adp = kmalloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO);
   92         new_vidsw = kmalloc(sizeof(*new_vidsw)*newsize, M_DEVBUF,
   93             M_WAITOK | M_ZERO);
   94 #ifdef FB_INSTALL_CDEV
   95         new_cdevsw = kmalloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF,
   96             M_WAITOK | M_ZERO);
   97 #endif
   98         bcopy(adapter, new_adp, sizeof(*adapter)*adapters);
   99         bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters);
  100 #ifdef FB_INSTALL_CDEV
  101         bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters);
  102 #endif
  103         if (adapters > 1) {
  104                 kfree(adapter, M_DEVBUF);
  105                 kfree(vidsw, M_DEVBUF);
  106 #ifdef FB_INSTALL_CDEV
  107                 kfree(vidcdevsw, M_DEVBUF);
  108 #endif
  109         }
  110         adapter = new_adp;
  111         vidsw = new_vidsw;
  112 #ifdef FB_INSTALL_CDEV
  113         vidcdevsw = new_cdevsw;
  114 #endif
  115         adapters = newsize;
  116         crit_exit();
  117 
  118         if (bootverbose)
  119                 kprintf("fb: new array size %d\n", adapters);
  120 
  121         return 0;
  122 }
  123 
  124 static void
  125 vid_malloc_init(void *arg)
  126 {
  127         vid_malloc = TRUE;
  128 }
  129 
  130 SYSINIT(vid_mem, SI_BOOT1_POST, SI_ORDER_ANY, vid_malloc_init, NULL);
  131 
  132 /*
  133  * Low-level frame buffer driver functions
  134  * frame buffer subdrivers, such as the VGA driver, call these functions
  135  * to initialize the video_adapter structure and register it to the virtual
  136  * frame buffer driver `fb'.
  137  */
  138 
  139 /* initialize the video_adapter_t structure */
  140 void
  141 vid_init_struct(video_adapter_t *adp, char *name, int type, int unit)
  142 {
  143         adp->va_flags = 0;
  144         adp->va_name = name;
  145         adp->va_type = type;
  146         adp->va_unit = unit;
  147 }
  148 
  149 /* Register a video adapter */
  150 int
  151 vid_register(video_adapter_t *adp)
  152 {
  153         const video_driver_t **list;
  154         const video_driver_t *p;
  155         int index;
  156 
  157         for (index = 0; index < adapters; ++index) {
  158                 if (adapter[index] == NULL)
  159                         break;
  160         }
  161         if (index >= adapters) {
  162                 if (vid_realloc_array())
  163                         return -1;
  164         }
  165 
  166         adp->va_index = index;
  167         adp->va_token = NULL;
  168         lwkt_gettoken(&tty_token);
  169         SET_FOREACH(list, videodriver_set) {
  170                 p = *list;
  171                 if (strcmp(p->name, adp->va_name) == 0) {
  172                         adapter[index] = adp;
  173                         vidsw[index] = p->vidsw;
  174                         lwkt_reltoken(&tty_token);
  175                         return index;
  176                 }
  177         }
  178 
  179         lwkt_reltoken(&tty_token);
  180         return -1;
  181 }
  182 
  183 int
  184 vid_unregister(video_adapter_t *adp)
  185 {
  186         lwkt_gettoken(&tty_token);
  187         if ((adp->va_index < 0) || (adp->va_index >= adapters)) {
  188                 lwkt_reltoken(&tty_token);
  189                 return ENOENT;
  190         }
  191         if (adapter[adp->va_index] != adp) {
  192                 lwkt_reltoken(&tty_token);
  193                 return ENOENT;
  194         }
  195 
  196         adapter[adp->va_index] = NULL;
  197         vidsw[adp->va_index] = NULL;
  198         lwkt_reltoken(&tty_token);
  199         return 0;
  200 }
  201 
  202 /* Get video I/O function table */
  203 video_switch_t *
  204 vid_get_switch(char *name)
  205 {
  206         const video_driver_t **list;
  207         const video_driver_t *p;
  208 
  209         lwkt_gettoken(&tty_token);
  210         SET_FOREACH(list, videodriver_set) {
  211                 p = *list;
  212                 if (strcmp(p->name, name) == 0) {
  213                         lwkt_reltoken(&tty_token);
  214                         return p->vidsw;
  215                 }
  216         }
  217 
  218         lwkt_reltoken(&tty_token);
  219         return NULL;
  220 }
  221 
  222 /*
  223  * Video card client functions
  224  * Video card clients, such as the console driver `syscons' and the frame
  225  * buffer cdev driver, use these functions to claim and release a card for
  226  * exclusive use.
  227  */
  228 
  229 /* find the video card specified by a driver name and a unit number */
  230 int
  231 vid_find_adapter(char *driver, int unit)
  232 {
  233         int i;
  234 
  235         for (i = 0; i < adapters; ++i) {
  236                 if (adapter[i] == NULL)
  237                         continue;
  238                 if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver))
  239                         continue;
  240                 if ((unit != -1) && (adapter[i]->va_unit != unit))
  241                         continue;
  242                 return i;
  243         }
  244         return -1;
  245 }
  246 
  247 /* allocate a video card */
  248 int
  249 vid_allocate(char *driver, int unit, void *id)
  250 {
  251         int index;
  252 
  253         crit_enter();
  254         index = vid_find_adapter(driver, unit);
  255         if (index >= 0) {
  256                 if (adapter[index]->va_token) {
  257                         crit_exit();
  258                         return -1;
  259                 }
  260                 adapter[index]->va_token = id;
  261         }
  262         crit_exit();
  263         return index;
  264 }
  265 
  266 int
  267 vid_release(video_adapter_t *adp, void *id)
  268 {
  269         int error;
  270 
  271         crit_enter();
  272         if (adp->va_token == NULL) {
  273                 error = EINVAL;
  274         } else if (adp->va_token != id) {
  275                 error = EPERM;
  276         } else {
  277                 adp->va_token = NULL;
  278                 error = 0;
  279         }
  280         crit_exit();
  281         return error;
  282 }
  283 
  284 /* Get a video adapter structure */
  285 video_adapter_t *
  286 vid_get_adapter(int index)
  287 {
  288         if ((index < 0) || (index >= adapters))
  289                 return NULL;
  290         return adapter[index];
  291 }
  292 
  293 /* Configure drivers: this is a backdoor for the console driver XXX */
  294 int
  295 vid_configure(int flags)
  296 {
  297         const video_driver_t **list;
  298         const video_driver_t *p;
  299 
  300         SET_FOREACH(list, videodriver_set) {
  301                 p = *list;
  302                 if (p->configure != NULL)
  303                         (*p->configure)(flags);
  304         }
  305 
  306         return 0;
  307 }
  308 
  309 /*
  310  * Virtual frame buffer cdev driver functions
  311  * The virtual frame buffer driver dispatches driver functions to
  312  * appropriate subdrivers.
  313  */
  314 
  315 #define FB_DRIVER_NAME  "fb"
  316 
  317 #ifdef FB_INSTALL_CDEV
  318 
  319 #if 0 /* experimental */
  320 
  321 static devclass_t       fb_devclass;
  322 
  323 static int              fbprobe(device_t dev);
  324 static int              fbattach(device_t dev);
  325 
  326 static device_method_t fb_methods[] = {
  327         DEVMETHOD(device_probe,         fbprobe),
  328         DEVMETHOD(device_attach,        fbattach),
  329 
  330         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  331         DEVMETHOD_END
  332 };
  333 
  334 static driver_t fb_driver = {
  335         FB_DRIVER_NAME,
  336         fb_methods,
  337         0,
  338 };
  339 
  340 static int
  341 fbprobe(device_t dev)
  342 {
  343         int unit;
  344 
  345         unit = device_get_unit(dev);
  346         if (unit >= adapters)
  347                 return ENXIO;
  348         if (adapter[unit] == NULL)
  349                 return ENXIO;
  350 
  351         device_set_desc(dev, "generic frame buffer");
  352         return 0;
  353 }
  354 
  355 static int
  356 fbattach(device_t dev)
  357 {
  358         kprintf("fbattach: about to attach children\n");
  359         bus_generic_attach(dev);
  360         return 0;
  361 }
  362 
  363 #endif /* experimental */
  364 
  365 #define FB_UNIT(dev)    minor(dev)
  366 #define FB_MKMINOR(unit) (u)
  367 
  368 #if 0
  369 static d_default_t      fboperate;
  370 static d_open_t         fbopen;
  371 
  372 static struct dev_ops fb_ops = {
  373         { FB_DRIVER_NAME, 0, 0 },
  374         .d_default =    fboperate,
  375         .d_open =       fbopen
  376 };
  377 #endif
  378 
  379 static void
  380 vfbattach(void *arg)
  381 {
  382         static int fb_devsw_installed = FALSE;
  383 
  384         if (!fb_devsw_installed) {
  385 #if 0
  386                 dev_ops_add(&fb_ops, 0, 0);
  387 #endif
  388                 fb_devsw_installed = TRUE;
  389         }
  390 }
  391 
  392 PSEUDO_SET(vfbattach, fb);
  393 
  394 /*
  395  *  Note: dev represents the actual video device, not the frame buffer
  396  */
  397 int
  398 fb_attach(cdev_t dev, video_adapter_t *adp)
  399 {
  400         if (adp->va_index >= adapters)
  401                 return EINVAL;
  402         if (adapter[adp->va_index] != adp)
  403                 return EINVAL;
  404 
  405         crit_enter();
  406         reference_dev(dev);
  407         adp->va_minor = minor(dev);
  408         vidcdevsw[adp->va_index] = dev;
  409         crit_exit();
  410 
  411         kprintf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit);
  412         return 0;
  413 }
  414 
  415 /*
  416  *  Note: dev represents the actual video device, not the frame buffer
  417  */
  418 int
  419 fb_detach(cdev_t dev, video_adapter_t *adp)
  420 {
  421         if (adp->va_index >= adapters)
  422                 return EINVAL;
  423         if (adapter[adp->va_index] != adp)
  424                 return EINVAL;
  425         if (vidcdevsw[adp->va_index] != dev)
  426                 return EINVAL;
  427 
  428         crit_enter();
  429         vidcdevsw[adp->va_index] = NULL;
  430         crit_exit();
  431         release_dev(dev);
  432         return 0;
  433 }
  434 
  435 #if 0
  436 static int
  437 fbopen(struct dev_open_args *ap)
  438 {
  439         cdev_t dev = ap->a_head.a_dev;
  440         int unit;
  441         cdev_t fdev;
  442 
  443         unit = FB_UNIT(dev);
  444         if (unit < 0 || unit >= adapters)
  445                 return ENXIO;
  446         if ((fdev = vidcdevsw[unit]) == NULL)
  447                 return ENXIO;
  448         return dev_dopen(fdev, ap->a_oflags, ap->a_devtype, ap->a_cred);
  449 }
  450 
  451 static int
  452 fboperate(struct dev_generic_args *ap)
  453 {
  454         cdev_t dev = ap->a_dev;
  455         int unit;
  456         cdev_t fdev;
  457 
  458         unit = FB_UNIT(dev);
  459         if ((fdev = vidcdevsw[unit]) == NULL)
  460                 return ENXIO;
  461         ap->a_dev = fdev;
  462         return dev_doperate(ap);
  463 }
  464 #endif
  465 
  466 /*
  467  * Generic frame buffer cdev driver functions
  468  * Frame buffer subdrivers may call these functions to implement common
  469  * driver functions.
  470  */
  471 
  472 int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
  473               struct ucred *cred)
  474 {
  475         crit_enter();
  476         if (!(sc->gfb_flags & FB_OPEN))
  477                 sc->gfb_flags |= FB_OPEN;
  478         crit_exit();
  479         return 0;
  480 }
  481 
  482 int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode)
  483 {
  484         crit_enter();
  485         sc->gfb_flags &= ~FB_OPEN;
  486         crit_exit();
  487         return 0;
  488 }
  489 
  490 int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
  491               int flag)
  492 {
  493         int size;
  494         int offset;
  495         int error;
  496         int len;
  497 
  498         lwkt_gettoken(&tty_token);
  499         error = 0;
  500         size = adp->va_buffer_size/adp->va_info.vi_planes;
  501         while (uio->uio_resid > 0) {
  502                 if (uio->uio_offset >= size)
  503                         break;
  504                 offset = uio->uio_offset%adp->va_window_size;
  505                 len = (int)szmin(uio->uio_resid, size - uio->uio_offset);
  506                 len = imin(len, adp->va_window_size - offset);
  507                 if (len <= 0)
  508                         break;
  509                 (*vidsw[adp->va_index]->set_win_org)(adp, uio->uio_offset);
  510                 error = uiomove((caddr_t)(adp->va_window + offset),
  511                                 (size_t)len, uio);
  512                 if (error)
  513                         break;
  514         }
  515         lwkt_reltoken(&tty_token);
  516         return error;
  517 }
  518 
  519 int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
  520                int flag)
  521 {
  522         return ENODEV;
  523 }
  524 
  525 int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd,
  526                caddr_t arg, int flag, struct ucred *cred)
  527 {
  528         int error;
  529 
  530         if (adp == NULL)        /* XXX */
  531                 return ENXIO;
  532         lwkt_gettoken(&tty_token);
  533         error = (*vidsw[adp->va_index]->ioctl)(adp, cmd, arg);
  534         if (error == ENOIOCTL)
  535                 error = ENODEV;
  536         lwkt_reltoken(&tty_token);
  537         return error;
  538 }
  539 
  540 int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset,
  541               int prot)
  542 {
  543         int error;
  544 
  545         lwkt_gettoken(&tty_token);
  546         error = (*vidsw[adp->va_index]->mmap)(adp, offset, prot);
  547         lwkt_reltoken(&tty_token);
  548         return (error);
  549 }
  550 
  551 #endif /* FB_INSTALL_CDEV */
  552 
  553 static char *
  554 adapter_name(int type)
  555 {
  556     static struct {
  557         int type;
  558         char *name;
  559     } names[] = {
  560         { KD_MONO,      "MDA" },
  561         { KD_HERCULES,  "Hercules" },
  562         { KD_CGA,       "CGA" },
  563         { KD_EGA,       "EGA" },
  564         { KD_VGA,       "VGA" },
  565         { KD_TGA,       "TGA" },
  566         { -1,           "Unknown" },
  567     };
  568     int i;
  569 
  570     for (i = 0; names[i].type != -1; ++i)
  571         if (names[i].type == type)
  572             break;
  573     return names[i].name;
  574 }
  575 
  576 /*
  577  * Generic low-level frame buffer functions
  578  * The low-level functions in the frame buffer subdriver may use these
  579  * functions.
  580  */
  581 
  582 void
  583 fb_dump_adp_info(char *driver, video_adapter_t *adp, int level)
  584 {
  585     if (level <= 0)
  586         return;
  587 
  588     kprintf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n", 
  589            FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name,
  590            adapter_name(adp->va_type), adp->va_type, adp->va_flags);
  591     kprintf("%s%d: port:0x%x-0x%x, mem:0x%x 0x%x\n",
  592            FB_DRIVER_NAME, adp->va_index,
  593            adp->va_io_base, adp->va_io_base + adp->va_io_size - 1,
  594            adp->va_mem_base, adp->va_mem_size);
  595     kprintf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n",
  596            FB_DRIVER_NAME, adp->va_index,
  597            adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode);
  598     kprintf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n",
  599            FB_DRIVER_NAME, adp->va_index, 
  600            (void *)adp->va_window, (int)adp->va_window_size/1024,
  601            (int)adp->va_window_gran/1024, (void *)adp->va_buffer,
  602            (int)adp->va_buffer_size/1024);
  603 }
  604 
  605 void
  606 fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info,
  607                   int level)
  608 {
  609     if (level <= 0)
  610         return;
  611 
  612     kprintf("%s%d: %s, mode:%d, flags:0x%x ", 
  613            driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags);
  614     if (info->vi_flags & V_INFO_GRAPHICS)
  615         kprintf("G %dx%dx%d, %d plane(s), font:%dx%d, ",
  616                info->vi_width, info->vi_height, 
  617                info->vi_depth, info->vi_planes, 
  618                info->vi_cwidth, info->vi_cheight); 
  619     else
  620         kprintf("T %dx%d, font:%dx%d, ",
  621                info->vi_width, info->vi_height, 
  622                info->vi_cwidth, info->vi_cheight); 
  623     kprintf("win:0x%x\n", info->vi_window);
  624 }
  625 
  626 int
  627 fb_type(int adp_type)
  628 {
  629         static struct {
  630                 int     fb_type;
  631                 int     va_type;
  632         } types[] = {
  633                 { FBTYPE_MDA,           KD_MONO },
  634                 { FBTYPE_HERCULES,      KD_HERCULES },
  635                 { FBTYPE_CGA,           KD_CGA },
  636                 { FBTYPE_EGA,           KD_EGA },
  637                 { FBTYPE_VGA,           KD_VGA },
  638                 { FBTYPE_TGA,           KD_TGA },
  639         };
  640         int i;
  641 
  642         for (i = 0; i < NELEM(types); ++i) {
  643                 if (types[i].va_type == adp_type)
  644                         return types[i].fb_type;
  645         }
  646         return -1;
  647 }
  648 
  649 int
  650 fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
  651 {
  652         int error;
  653 
  654         /* assert(adp != NULL) */
  655 
  656         error = 0;
  657         crit_enter();
  658 
  659         lwkt_gettoken(&tty_token);
  660         switch (cmd) {
  661 
  662         case FBIO_ADAPTER:      /* get video adapter index */
  663                 *(int *)arg = adp->va_index;
  664                 break;
  665 
  666         case FBIO_ADPTYPE:      /* get video adapter type */
  667                 *(int *)arg = adp->va_type;
  668                 break;
  669 
  670         case FBIO_ADPINFO:      /* get video adapter info */
  671                 ((video_adapter_info_t *)arg)->va_index = adp->va_index;
  672                 ((video_adapter_info_t *)arg)->va_type = adp->va_type;
  673                 bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name,
  674                       imin(strlen(adp->va_name) + 1,
  675                            sizeof(((video_adapter_info_t *)arg)->va_name))); 
  676                 ((video_adapter_info_t *)arg)->va_unit = adp->va_unit;
  677                 ((video_adapter_info_t *)arg)->va_flags = adp->va_flags;
  678                 ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base;
  679                 ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size;
  680                 ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base;
  681                 ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size;
  682                 ((video_adapter_info_t *)arg)->va_window
  683 #ifdef __i386__
  684                         = vtophys(adp->va_window);
  685 #else
  686                         = adp->va_window;
  687 #endif
  688                 ((video_adapter_info_t *)arg)->va_window_size
  689                         = adp->va_window_size;
  690                 ((video_adapter_info_t *)arg)->va_window_gran
  691                         = adp->va_window_gran;
  692                 ((video_adapter_info_t *)arg)->va_window_orig
  693                         = adp->va_window_orig;
  694                 ((video_adapter_info_t *)arg)->va_unused0
  695 #ifdef __i386__
  696                         = (adp->va_buffer) ? vtophys(adp->va_buffer) : 0;
  697 #else
  698                         = adp->va_buffer;
  699 #endif
  700                 ((video_adapter_info_t *)arg)->va_buffer_size
  701                         = adp->va_buffer_size;
  702                 ((video_adapter_info_t *)arg)->va_mode = adp->va_mode;
  703                 ((video_adapter_info_t *)arg)->va_initial_mode
  704                         = adp->va_initial_mode;
  705                 ((video_adapter_info_t *)arg)->va_initial_bios_mode
  706                         = adp->va_initial_bios_mode;
  707                 ((video_adapter_info_t *)arg)->va_line_width
  708                         = adp->va_line_width;
  709                 ((video_adapter_info_t *)arg)->va_disp_start.x
  710                         = adp->va_disp_start.x;
  711                 ((video_adapter_info_t *)arg)->va_disp_start.y
  712                         = adp->va_disp_start.y;
  713                 break;
  714 
  715         case FBIO_MODEINFO:     /* get mode information */
  716                 error = (*vidsw[adp->va_index]->get_info)(adp, 
  717                                 ((video_info_t *)arg)->vi_mode,
  718                                 (video_info_t *)arg); 
  719                 if (error)
  720                         error = ENODEV;
  721                 break;
  722 
  723         case FBIO_FINDMODE:     /* find a matching video mode */
  724                 error = (*vidsw[adp->va_index]->query_mode)(adp, 
  725                                 (video_info_t *)arg); 
  726                 break;
  727 
  728         case FBIO_GETMODE:      /* get video mode */
  729                 *(int *)arg = adp->va_mode;
  730                 break;
  731 
  732         case FBIO_SETMODE:      /* set video mode */
  733                 error = (*vidsw[adp->va_index]->set_mode)(adp, *(int *)arg);
  734                 if (error)
  735                         error = ENODEV; /* EINVAL? */
  736                 break;
  737 
  738         case FBIO_GETWINORG:    /* get frame buffer window origin */
  739                 *(u_int *)arg = adp->va_window_orig;
  740                 break;
  741 
  742         case FBIO_GETDISPSTART: /* get display start address */
  743                 ((video_display_start_t *)arg)->x = adp->va_disp_start.x;
  744                 ((video_display_start_t *)arg)->y = adp->va_disp_start.y;
  745                 break;
  746 
  747         case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
  748                 *(u_int *)arg = adp->va_line_width;
  749                 break;
  750 
  751         case FBIO_GETPALETTE:   /* get color palette */
  752         case FBIO_SETPALETTE:   /* set color palette */
  753                 /* XXX */
  754 
  755         case FBIOPUTCMAP:
  756         case FBIOGETCMAP:
  757                 /* XXX */
  758 
  759         case FBIO_SETWINORG:    /* set frame buffer window origin */
  760         case FBIO_SETDISPSTART: /* set display start address */
  761         case FBIO_SETLINEWIDTH: /* set scan line width in pixel */
  762 
  763         case FBIOGTYPE:
  764         case FBIOGATTR:
  765         case FBIOSVIDEO:
  766         case FBIOGVIDEO:
  767         case FBIOSCURSOR:
  768         case FBIOGCURSOR:
  769         case FBIOSCURPOS:
  770         case FBIOGCURPOS:
  771         case FBIOGCURMAX:
  772 
  773         default:
  774                 error = ENODEV;
  775                 break;
  776         }
  777 
  778         crit_exit();
  779         lwkt_reltoken(&tty_token);
  780         return error;
  781 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/video/fb/fb.c

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