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      1 /*
      2  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
      3  * All Rights Reserved.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining a
      6  * copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sub license, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the
     14  * next paragraph) shall be included in all copies or substantial portions
     15  * of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     20  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
     21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     24  *
     25  *
     26  * Author: Alan Hourihane <alanh (at) tungstengraphics.com>
     27  * Author: Jakob Bornecrantz <wallbraker (at) gmail.com>
     28  *
     29  */
     30 
     31 
     32 #include "xorg-server.h"
     33 #include "xf86.h"
     34 #include "xf86_OSproc.h"
     35 #include "compiler.h"
     36 #include "xf86PciInfo.h"
     37 #include "xf86Pci.h"
     38 #include "mipointer.h"
     39 #include "micmap.h"
     40 #include <X11/extensions/randr.h>
     41 #include "fb.h"
     42 #include "edid.h"
     43 #include "xf86i2c.h"
     44 #include "xf86Crtc.h"
     45 #include "miscstruct.h"
     46 #include "dixstruct.h"
     47 #include "xf86cmap.h"
     48 #include "xf86xv.h"
     49 #include "xorgVersion.h"
     50 #ifndef XSERVER_LIBPCIACCESS
     51 #error "libpciaccess needed"
     52 #endif
     53 
     54 #include <pciaccess.h>
     55 
     56 #include "state_tracker/drm_driver.h"
     57 #include "pipe/p_context.h"
     58 #include "xorg_tracker.h"
     59 #include "xorg_winsys.h"
     60 
     61 #ifdef HAVE_LIBKMS
     62 #include "libkms/libkms.h"
     63 #endif
     64 
     65 /*
     66  * Functions and symbols exported to Xorg via pointers.
     67  */
     68 
     69 static Bool drv_pre_init(ScrnInfoPtr pScrn, int flags);
     70 static Bool drv_screen_init(SCREEN_INIT_ARGS_DECL);
     71 static Bool drv_switch_mode(SWITCH_MODE_ARGS_DECL);
     72 static void drv_adjust_frame(ADJUST_FRAME_ARGS_DECL);
     73 static Bool drv_enter_vt(VT_FUNC_ARGS_DECL);
     74 static Bool drv_enter_vt_flags(ScrnInfoPtr pScrn, int flags);
     75 static void drv_leave_vt(VT_FUNC_ARGS_DECL);
     76 static void drv_free_screen(FREE_SCREEN_ARGS_DECL);
     77 static ModeStatus drv_valid_mode(SCRN_ARG_TYPE arg, DisplayModePtr mode, Bool verbose,
     78 			         int flags);
     79 
     80 typedef enum
     81 {
     82     OPTION_SW_CURSOR,
     83     OPTION_2D_ACCEL,
     84     OPTION_DEBUG_FALLBACK,
     85     OPTION_THROTTLE_SWAP,
     86     OPTION_THROTTLE_DIRTY,
     87     OPTION_3D_ACCEL
     88 } drv_option_enums;
     89 
     90 static const OptionInfoRec drv_options[] = {
     91     {OPTION_SW_CURSOR, "SWcursor", OPTV_BOOLEAN, {0}, FALSE},
     92     {OPTION_2D_ACCEL, "2DAccel", OPTV_BOOLEAN, {0}, FALSE},
     93     {OPTION_DEBUG_FALLBACK, "DebugFallback", OPTV_BOOLEAN, {0}, FALSE},
     94     {OPTION_THROTTLE_SWAP, "SwapThrottling", OPTV_BOOLEAN, {0}, FALSE},
     95     {OPTION_THROTTLE_DIRTY, "DirtyThrottling", OPTV_BOOLEAN, {0}, FALSE},
     96     {OPTION_3D_ACCEL, "3DAccel", OPTV_BOOLEAN, {0}, FALSE},
     97     {-1, NULL, OPTV_NONE, {0}, FALSE}
     98 };
     99 
    100 
    101 /*
    102  * Exported Xorg driver functions to winsys
    103  */
    104 
    105 const OptionInfoRec *
    106 xorg_tracker_available_options(int chipid, int busid)
    107 {
    108     return drv_options;
    109 }
    110 
    111 void
    112 xorg_tracker_set_functions(ScrnInfoPtr scrn)
    113 {
    114     scrn->PreInit = drv_pre_init;
    115     scrn->ScreenInit = drv_screen_init;
    116     scrn->SwitchMode = drv_switch_mode;
    117     scrn->AdjustFrame = drv_adjust_frame;
    118     scrn->EnterVT = drv_enter_vt;
    119     scrn->LeaveVT = drv_leave_vt;
    120     scrn->FreeScreen = drv_free_screen;
    121     scrn->ValidMode = drv_valid_mode;
    122 }
    123 
    124 Bool
    125 xorg_tracker_have_modesetting(ScrnInfoPtr pScrn, struct pci_device *device)
    126 {
    127     char *BusID = malloc(64);
    128     sprintf(BusID, "pci:%04x:%02x:%02x.%d",
    129 	    device->domain, device->bus,
    130 	    device->dev, device->func);
    131 
    132     if (drmCheckModesettingSupported(BusID)) {
    133 	xf86DrvMsgVerb(pScrn->scrnIndex, X_INFO, 0,
    134 		       "Drm modesetting not supported %s\n", BusID);
    135 	free(BusID);
    136 	return FALSE;
    137     }
    138 
    139     xf86DrvMsgVerb(pScrn->scrnIndex, X_INFO, 0,
    140 		   "Drm modesetting supported on %s\n", BusID);
    141 
    142     free(BusID);
    143     return TRUE;
    144 }
    145 
    146 
    147 /*
    148  * Internal function definitions
    149  */
    150 
    151 static Bool drv_init_front_buffer_functions(ScrnInfoPtr pScrn);
    152 static Bool drv_close_screen(CLOSE_SCREEN_ARGS_DECL);
    153 
    154 
    155 /*
    156  * Internal functions
    157  */
    158 
    159 static Bool
    160 drv_get_rec(ScrnInfoPtr pScrn)
    161 {
    162     if (pScrn->driverPrivate)
    163 	return TRUE;
    164 
    165     pScrn->driverPrivate = xnfcalloc(1, sizeof(modesettingRec));
    166 
    167     return TRUE;
    168 }
    169 
    170 static void
    171 drv_free_rec(ScrnInfoPtr pScrn)
    172 {
    173     if (!pScrn)
    174 	return;
    175 
    176     if (!pScrn->driverPrivate)
    177 	return;
    178 
    179     free(pScrn->driverPrivate);
    180 
    181     pScrn->driverPrivate = NULL;
    182 }
    183 
    184 static void
    185 drv_probe_ddc(ScrnInfoPtr pScrn, int index)
    186 {
    187     ConfiguredMonitor = NULL;
    188 }
    189 
    190 static Bool
    191 drv_crtc_resize(ScrnInfoPtr pScrn, int width, int height)
    192 {
    193     xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
    194     modesettingPtr ms = modesettingPTR(pScrn);
    195     CustomizerPtr cust = ms->cust;
    196     ScreenPtr pScreen = pScrn->pScreen;
    197     int old_width, old_height;
    198     PixmapPtr rootPixmap;
    199     int i;
    200 
    201     if (width == pScrn->virtualX && height == pScrn->virtualY)
    202 	return TRUE;
    203 
    204     if (cust && cust->winsys_check_fb_size &&
    205 	!cust->winsys_check_fb_size(cust, width*pScrn->bitsPerPixel / 8,
    206 				    height)) {
    207 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
    208 		   "Requested framebuffer size %dx%dx%d will not fit "
    209 		   "in display memory.\n",
    210 		   width, height, pScrn->bitsPerPixel);
    211 	return FALSE;
    212     }
    213 
    214     old_width = pScrn->virtualX;
    215     old_height = pScrn->virtualY;
    216     pScrn->virtualX = width;
    217     pScrn->virtualY = height;
    218 
    219     /* ms->create_front_buffer will remove the old front buffer */
    220 
    221     rootPixmap = pScreen->GetScreenPixmap(pScreen);
    222     if (!pScreen->ModifyPixmapHeader(rootPixmap, width, height, -1, -1, -1, NULL))
    223 	goto error_modify;
    224 
    225     pScrn->displayWidth = rootPixmap->devKind / (rootPixmap->drawable.bitsPerPixel / 8);
    226 
    227     if (!ms->create_front_buffer(pScrn) || !ms->bind_front_buffer(pScrn))
    228 	goto error_create;
    229 
    230     /*
    231      * create && bind will turn off all crtc(s) in the kernel so we need to
    232      * re-enable all the crtcs again. For real HW we might want to do this
    233      * before destroying the old framebuffer.
    234      */
    235     for (i = 0; i < xf86_config->num_crtc; i++) {
    236 	xf86CrtcPtr crtc = xf86_config->crtc[i];
    237 
    238 	if (!crtc->enabled)
    239 	    continue;
    240 
    241 	crtc->funcs->set_mode_major(crtc, &crtc->mode, crtc->rotation, crtc->x, crtc->y);
    242     }
    243 
    244     return TRUE;
    245 
    246     /*
    247      * This is the error recovery path.
    248      */
    249 error_create:
    250     if (!pScreen->ModifyPixmapHeader(rootPixmap, old_width, old_height, -1, -1, -1, NULL))
    251 	FatalError("failed to resize rootPixmap error path\n");
    252 
    253     pScrn->displayWidth = rootPixmap->devKind / (rootPixmap->drawable.bitsPerPixel / 8);
    254 
    255 error_modify:
    256     pScrn->virtualX = old_width;
    257     pScrn->virtualY = old_height;
    258 
    259     if (ms->create_front_buffer(pScrn) && ms->bind_front_buffer(pScrn))
    260 	return FALSE;
    261 
    262     FatalError("failed to setup old framebuffer\n");
    263     return FALSE;
    264 }
    265 
    266 static const xf86CrtcConfigFuncsRec crtc_config_funcs = {
    267     .resize = drv_crtc_resize
    268 };
    269 
    270 static Bool
    271 drv_init_drm(ScrnInfoPtr pScrn)
    272 {
    273     modesettingPtr ms = modesettingPTR(pScrn);
    274 
    275     /* deal with server regeneration */
    276     if (ms->fd < 0) {
    277 	char *BusID;
    278 
    279 	BusID = malloc(64);
    280 	sprintf(BusID, "PCI:%d:%d:%d",
    281 		((ms->PciInfo->domain << 8) | ms->PciInfo->bus),
    282 		ms->PciInfo->dev, ms->PciInfo->func
    283 	    );
    284 
    285 
    286 	ms->fd = drmOpen(driver_descriptor.driver_name, BusID);
    287 	ms->isMaster = TRUE;
    288 	free(BusID);
    289 
    290 	if (ms->fd >= 0)
    291 	    return TRUE;
    292 
    293 	return FALSE;
    294     }
    295 
    296     return TRUE;
    297 }
    298 
    299 static Bool
    300 drv_init_resource_management(ScrnInfoPtr pScrn)
    301 {
    302     modesettingPtr ms = modesettingPTR(pScrn);
    303     /*
    304     ScreenPtr pScreen = pScrn->pScreen;
    305     PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
    306     Bool fbAccessDisabled;
    307     CARD8 *fbstart;
    308      */
    309 
    310     if (ms->screen || ms->kms)
    311 	return TRUE;
    312 
    313     if (!ms->no3D)
    314 	ms->screen = driver_descriptor.create_screen(ms->fd);
    315 
    316     if (ms->screen)
    317 	return TRUE;
    318 
    319 #ifdef HAVE_LIBKMS
    320     if (!kms_create(ms->fd, &ms->kms))
    321 	return TRUE;
    322 #endif
    323 
    324     return FALSE;
    325 }
    326 
    327 static void
    328 drv_cleanup_fences(ScrnInfoPtr pScrn)
    329 {
    330     modesettingPtr ms = modesettingPTR(pScrn);
    331     int i;
    332 
    333     assert(ms->screen);
    334 
    335     for (i = 0; i < XORG_NR_FENCES; i++) {
    336 	if (ms->fence[i]) {
    337             ms->screen->fence_finish(ms->screen, ms->fence[i],
    338                                      PIPE_TIMEOUT_INFINITE);
    339 	    ms->screen->fence_reference(ms->screen, &ms->fence[i], NULL);
    340 	}
    341     }
    342 }
    343 
    344 static Bool
    345 drv_pre_init(ScrnInfoPtr pScrn, int flags)
    346 {
    347     xf86CrtcConfigPtr xf86_config;
    348     modesettingPtr ms;
    349     rgb defaultWeight = { 0, 0, 0 };
    350     EntityInfoPtr pEnt;
    351     EntPtr msEnt = NULL;
    352     CustomizerPtr cust;
    353     Bool use3D;
    354 
    355     if (pScrn->numEntities != 1)
    356 	return FALSE;
    357 
    358     pEnt = xf86GetEntityInfo(pScrn->entityList[0]);
    359 
    360     if (flags & PROBE_DETECT) {
    361 	drv_probe_ddc(pScrn, pEnt->index);
    362 	return TRUE;
    363     }
    364 
    365     cust = (CustomizerPtr) pScrn->driverPrivate;
    366     pScrn->driverPrivate = NULL;
    367 
    368     /* Allocate driverPrivate */
    369     if (!drv_get_rec(pScrn))
    370 	return FALSE;
    371 
    372     ms = modesettingPTR(pScrn);
    373     ms->pEnt = pEnt;
    374     ms->cust = cust;
    375     ms->fb_id = -1;
    376 
    377     pScrn->displayWidth = 640;	       /* default it */
    378 
    379     if (ms->pEnt->location.type != BUS_PCI)
    380 	return FALSE;
    381 
    382     ms->PciInfo = xf86GetPciInfoForEntity(ms->pEnt->index);
    383 
    384     /* Allocate an entity private if necessary */
    385     if (xf86IsEntityShared(pScrn->entityList[0])) {
    386 	FatalError("Entity");
    387 #if 0
    388 	msEnt = xf86GetEntityPrivate(pScrn->entityList[0],
    389 				     modesettingEntityIndex)->ptr;
    390 	ms->entityPrivate = msEnt;
    391 #else
    392 	(void)msEnt;
    393 #endif
    394     } else
    395 	ms->entityPrivate = NULL;
    396 
    397     if (xf86IsEntityShared(pScrn->entityList[0])) {
    398 	if (xf86IsPrimInitDone(pScrn->entityList[0])) {
    399 	    /* do something */
    400 	} else {
    401 	    xf86SetPrimInitDone(pScrn->entityList[0]);
    402 	}
    403     }
    404 
    405     ms->fd = -1;
    406     if (!drv_init_drm(pScrn))
    407 	return FALSE;
    408 
    409     pScrn->monitor = pScrn->confScreen->monitor;
    410     pScrn->progClock = TRUE;
    411     pScrn->rgbBits = 8;
    412 
    413     if (!xf86SetDepthBpp
    414 	(pScrn, 0, 0, 0,
    415 	 PreferConvert24to32 | SupportConvert24to32 | Support32bppFb))
    416 	return FALSE;
    417 
    418     switch (pScrn->depth) {
    419     case 8:
    420     case 15:
    421     case 16:
    422     case 24:
    423 	break;
    424     default:
    425 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
    426 		   "Given depth (%d) is not supported by the driver\n",
    427 		   pScrn->depth);
    428 	return FALSE;
    429     }
    430     xf86PrintDepthBpp(pScrn);
    431 
    432     if (!xf86SetWeight(pScrn, defaultWeight, defaultWeight))
    433 	return FALSE;
    434     if (!xf86SetDefaultVisual(pScrn, -1))
    435 	return FALSE;
    436 
    437     /* Process the options */
    438     xf86CollectOptions(pScrn, NULL);
    439     if (!(ms->Options = malloc(sizeof(drv_options))))
    440 	return FALSE;
    441     memcpy(ms->Options, drv_options, sizeof(drv_options));
    442     xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, ms->Options);
    443 
    444     use3D = cust ? !cust->no_3d : TRUE;
    445     ms->from_3D = xf86GetOptValBool(ms->Options, OPTION_3D_ACCEL,
    446 				    &use3D) ?
    447 	X_CONFIG : X_PROBED;
    448 
    449     ms->no3D = !use3D;
    450 
    451     if (!drv_init_resource_management(pScrn)) {
    452 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Could not init "
    453 					       "Gallium3D or libKMS.\n");
    454 	return FALSE;
    455     }
    456 
    457     /* Allocate an xf86CrtcConfig */
    458     xf86CrtcConfigInit(pScrn, &crtc_config_funcs);
    459     xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
    460 
    461     /* get max width and height */
    462     {
    463 	drmModeResPtr res;
    464 	int max_width, max_height;
    465 
    466 	res = drmModeGetResources(ms->fd);
    467 	max_width = res->max_width;
    468 	max_height = res->max_height;
    469 
    470 	if (ms->screen) {
    471 	    int max;
    472 
    473 	    max = ms->screen->get_param(ms->screen,
    474 					PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
    475 	    max = 1 << (max - 1);
    476 	    max_width = max < max_width ? max : max_width;
    477 	    max_height = max < max_height ? max : max_height;
    478 	}
    479 
    480 	xf86CrtcSetSizeRange(pScrn, res->min_width,
    481 			     res->min_height, max_width, max_height);
    482 	xf86DrvMsg(pScrn->scrnIndex, X_PROBED,
    483 		   "Min width %d, Max Width %d.\n",
    484 		   res->min_width, max_width);
    485 	xf86DrvMsg(pScrn->scrnIndex, X_PROBED,
    486 		   "Min height %d, Max Height %d.\n",
    487 		   res->min_height, max_height);
    488 	drmModeFreeResources(res);
    489     }
    490 
    491 
    492     if (xf86ReturnOptValBool(ms->Options, OPTION_SW_CURSOR, FALSE)) {
    493 	ms->SWCursor = TRUE;
    494     }
    495 
    496     xorg_crtc_init(pScrn);
    497     xorg_output_init(pScrn);
    498 
    499     if (cust && cust->winsys_pre_init && !cust->winsys_pre_init(cust, ms->fd))
    500 	return FALSE;
    501 
    502     if (!xf86InitialConfiguration(pScrn, TRUE)) {
    503 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No valid modes.\n");
    504 	return FALSE;
    505     }
    506 
    507     /*
    508      * If the driver can do gamma correction, it should call xf86SetGamma() here.
    509      */
    510     {
    511 	Gamma zeros = { 0.0, 0.0, 0.0 };
    512 
    513 	if (!xf86SetGamma(pScrn, zeros)) {
    514 	    return FALSE;
    515 	}
    516     }
    517 
    518     if (pScrn->modes == NULL) {
    519 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No modes.\n");
    520 	return FALSE;
    521     }
    522 
    523     pScrn->currentMode = pScrn->modes;
    524 
    525     /* Set display resolution */
    526     xf86SetDpi(pScrn, 0, 0);
    527 
    528     /* Load the required sub modules */
    529     if (!xf86LoadSubModule(pScrn, "fb"))
    530 	return FALSE;
    531 
    532     /* XXX: these aren't needed when we are using libkms */
    533     if (!xf86LoadSubModule(pScrn, "exa"))
    534 	return FALSE;
    535 
    536 #ifdef DRI2
    537     if (!xf86LoadSubModule(pScrn, "dri2"))
    538 	return FALSE;
    539 #endif
    540 
    541     return TRUE;
    542 }
    543 
    544 void xorg_flush(ScreenPtr pScreen)
    545 {
    546     modesettingPtr ms = modesettingPTR(xf86ScreenToScrn(pScreen));
    547 
    548     if (ms->ctx) {
    549 	int j;
    550 
    551 	ms->ctx->flush(ms->ctx,
    552 		       ms->dirtyThrottling ?
    553 		       &ms->fence[XORG_NR_FENCES-1] :
    554 		       NULL);
    555 
    556 	if (ms->dirtyThrottling) {
    557 	    if (ms->fence[0])
    558 		ms->ctx->screen->fence_finish(ms->ctx->screen,
    559                                               ms->fence[0],
    560                                               PIPE_TIMEOUT_INFINITE);
    561 
    562 	    /* The amount of rendering generated by a block handler can be
    563 	     * quite small.  Let us get a fair way ahead of hardware before
    564 	     * throttling.
    565 	     */
    566 	    for (j = 0; j < XORG_NR_FENCES - 1; j++)
    567 		ms->screen->fence_reference(ms->screen,
    568 					    &ms->fence[j],
    569 					    ms->fence[j+1]);
    570 
    571 	    ms->screen->fence_reference(ms->screen,
    572 					&ms->fence[XORG_NR_FENCES-1],
    573 					NULL);
    574 	}
    575     }
    576 
    577 #ifdef DRM_MODE_FEATURE_DIRTYFB
    578     {
    579 	RegionPtr dirty = DamageRegion(ms->damage);
    580 	unsigned num_cliprects = REGION_NUM_RECTS(dirty);
    581 
    582 	if (num_cliprects) {
    583 	    drmModeClip *clip = alloca(num_cliprects * sizeof(drmModeClip));
    584 	    BoxPtr rect = REGION_RECTS(dirty);
    585 	    int i, ret;
    586 
    587 	    /* XXX no need for copy? */
    588 	    for (i = 0; i < num_cliprects; i++, rect++) {
    589 		clip[i].x1 = rect->x1;
    590 		clip[i].y1 = rect->y1;
    591 		clip[i].x2 = rect->x2;
    592 		clip[i].y2 = rect->y2;
    593 	    }
    594 
    595 	    /* TODO query connector property to see if this is needed */
    596 	    ret = drmModeDirtyFB(ms->fd, ms->fb_id, clip, num_cliprects);
    597 	    if (ret) {
    598 		debug_printf("%s: failed to send dirty (%i, %s)\n",
    599 			     __func__, ret, strerror(-ret));
    600 	    }
    601 
    602 	    DamageEmpty(ms->damage);
    603 	}
    604     }
    605 #endif
    606 }
    607 
    608 static void drv_block_handler(BLOCKHANDLER_ARGS_DECL)
    609 {
    610     SCREEN_PTR(arg);
    611     modesettingPtr ms = modesettingPTR(xf86ScreenToScrn(pScreen));
    612 
    613     pScreen->BlockHandler = ms->blockHandler;
    614     pScreen->BlockHandler(BLOCKHANDLER_ARGS);
    615     pScreen->BlockHandler = drv_block_handler;
    616 
    617     xorg_flush(pScreen);
    618 }
    619 
    620 static Bool
    621 drv_create_screen_resources(ScreenPtr pScreen)
    622 {
    623     ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
    624     modesettingPtr ms = modesettingPTR(pScrn);
    625     PixmapPtr rootPixmap;
    626     Bool ret;
    627 
    628     ms->noEvict = TRUE;
    629 
    630     pScreen->CreateScreenResources = ms->createScreenResources;
    631     ret = pScreen->CreateScreenResources(pScreen);
    632     pScreen->CreateScreenResources = drv_create_screen_resources;
    633 
    634     ms->bind_front_buffer(pScrn);
    635 
    636     ms->noEvict = FALSE;
    637 
    638     drv_adjust_frame(ADJUST_FRAME_ARGS(pScrn, pScrn->frameX0, pScrn->frameY0));
    639 
    640 #ifdef DRM_MODE_FEATURE_DIRTYFB
    641     rootPixmap = pScreen->GetScreenPixmap(pScreen);
    642     ms->damage = DamageCreate(NULL, NULL, DamageReportNone, TRUE,
    643                               pScreen, rootPixmap);
    644 
    645     if (ms->damage) {
    646        DamageRegister(&rootPixmap->drawable, ms->damage);
    647 
    648        xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Damage tracking initialized\n");
    649     } else {
    650        xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
    651                   "Failed to create screen damage record\n");
    652        return FALSE;
    653     }
    654 #else
    655     (void)rootPixmap;
    656 #endif
    657 
    658     return ret;
    659 }
    660 
    661 static Bool
    662 drv_set_master(ScrnInfoPtr pScrn)
    663 {
    664     modesettingPtr ms = modesettingPTR(pScrn);
    665 
    666     if (!ms->isMaster && drmSetMaster(ms->fd) != 0) {
    667 	if (errno == EINVAL) {
    668 	    xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
    669 		       "drmSetMaster failed: 2.6.29 or newer kernel required for "
    670 		       "multi-server DRI\n");
    671 	} else {
    672 	    xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
    673 		       "drmSetMaster failed: %s\n", strerror(errno));
    674 	}
    675 	return FALSE;
    676     }
    677 
    678     ms->isMaster = TRUE;
    679     return TRUE;
    680 }
    681 
    682 
    683 static void drv_load_palette(ScrnInfoPtr pScrn, int numColors,
    684 			     int *indices, LOCO *colors, VisualPtr pVisual)
    685 {
    686     xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
    687     modesettingPtr ms = modesettingPTR(pScrn);
    688     int index, j, i;
    689     int c;
    690 
    691     switch(pScrn->depth) {
    692     case 15:
    693 	for (i = 0; i < numColors; i++) {
    694 	    index = indices[i];
    695 	    for (j = 0; j < 8; j++) {
    696 		ms->lut_r[index * 8 + j] = colors[index].red << 8;
    697 		ms->lut_g[index * 8 + j] = colors[index].green << 8;
    698 		ms->lut_b[index * 8 + j] = colors[index].blue << 8;
    699 	    }
    700 	}
    701 	break;
    702     case 16:
    703 	for (i = 0; i < numColors; i++) {
    704 	    index = indices[i];
    705 
    706 	    if (index < 32) {
    707 		for (j = 0; j < 8; j++) {
    708 		    ms->lut_r[index * 8 + j] = colors[index].red << 8;
    709 		    ms->lut_b[index * 8 + j] = colors[index].blue << 8;
    710 		}
    711 	    }
    712 
    713 	    for (j = 0; j < 4; j++) {
    714 		ms->lut_g[index * 4 + j] = colors[index].green << 8;
    715 	    }
    716 	}
    717 	break;
    718     default:
    719 	for (i = 0; i < numColors; i++) {
    720 	    index = indices[i];
    721 	    ms->lut_r[index] = colors[index].red << 8;
    722 	    ms->lut_g[index] = colors[index].green << 8;
    723 	    ms->lut_b[index] = colors[index].blue << 8;
    724 	}
    725 	break;
    726     }
    727 
    728     for (c = 0; c < xf86_config->num_crtc; c++) {
    729 	xf86CrtcPtr crtc = xf86_config->crtc[c];
    730 
    731 	/* Make the change through RandR */
    732 #ifdef RANDR_12_INTERFACE
    733 	if (crtc->randr_crtc)
    734 	    RRCrtcGammaSet(crtc->randr_crtc, ms->lut_r, ms->lut_g, ms->lut_b);
    735 	else
    736 #endif
    737 	    crtc->funcs->gamma_set(crtc, ms->lut_r, ms->lut_g, ms->lut_b, 256);
    738     }
    739 }
    740 
    741 
    742 static Bool
    743 drv_screen_init(SCREEN_INIT_ARGS_DECL)
    744 {
    745     ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
    746     modesettingPtr ms = modesettingPTR(pScrn);
    747     VisualPtr visual;
    748     CustomizerPtr cust = ms->cust;
    749     MessageType from_st;
    750     MessageType from_dt;
    751 
    752     if (!drv_set_master(pScrn))
    753 	return FALSE;
    754 
    755     if (!drv_init_front_buffer_functions(pScrn)) {
    756 	FatalError("Could not init front buffer manager");
    757 	return FALSE;
    758     }
    759 
    760     pScrn->pScreen = pScreen;
    761 
    762     /* HW dependent - FIXME */
    763     pScrn->displayWidth = pScrn->virtualX;
    764 
    765     miClearVisualTypes();
    766 
    767     if (!miSetVisualTypes(pScrn->depth,
    768 			  miGetDefaultVisualMask(pScrn->depth),
    769 			  pScrn->rgbBits, pScrn->defaultVisual))
    770 	return FALSE;
    771 
    772     if (!miSetPixmapDepths())
    773 	return FALSE;
    774 
    775     pScrn->memPhysBase = 0;
    776     pScrn->fbOffset = 0;
    777 
    778     if (!fbScreenInit(pScreen, NULL,
    779 		      pScrn->virtualX, pScrn->virtualY,
    780 		      pScrn->xDpi, pScrn->yDpi,
    781 		      pScrn->displayWidth, pScrn->bitsPerPixel))
    782 	return FALSE;
    783 
    784     if (pScrn->bitsPerPixel > 8) {
    785 	/* Fixup RGB ordering */
    786 	visual = pScreen->visuals + pScreen->numVisuals;
    787 	while (--visual >= pScreen->visuals) {
    788 	    if ((visual->class | DynamicClass) == DirectColor) {
    789 		visual->offsetRed = pScrn->offset.red;
    790 		visual->offsetGreen = pScrn->offset.green;
    791 		visual->offsetBlue = pScrn->offset.blue;
    792 		visual->redMask = pScrn->mask.red;
    793 		visual->greenMask = pScrn->mask.green;
    794 		visual->blueMask = pScrn->mask.blue;
    795 	    }
    796 	}
    797     }
    798 
    799     fbPictureInit(pScreen, NULL, 0);
    800 
    801     ms->blockHandler = pScreen->BlockHandler;
    802     pScreen->BlockHandler = drv_block_handler;
    803     ms->createScreenResources = pScreen->CreateScreenResources;
    804     pScreen->CreateScreenResources = drv_create_screen_resources;
    805 
    806     xf86SetBlackWhitePixels(pScreen);
    807 
    808     ms->accelerate_2d = xf86ReturnOptValBool(ms->Options, OPTION_2D_ACCEL, FALSE);
    809     ms->debug_fallback = xf86ReturnOptValBool(ms->Options, OPTION_DEBUG_FALLBACK, ms->accelerate_2d);
    810 
    811     if (cust && cust->winsys_screen_init)
    812 	cust->winsys_screen_init(cust);
    813 
    814     ms->swapThrottling = cust ?  cust->swap_throttling : TRUE;
    815     from_st = xf86GetOptValBool(ms->Options, OPTION_THROTTLE_SWAP,
    816 				&ms->swapThrottling) ?
    817 	X_CONFIG : X_DEFAULT;
    818 
    819     ms->dirtyThrottling = cust ?  cust->dirty_throttling : FALSE;
    820     from_dt = xf86GetOptValBool(ms->Options, OPTION_THROTTLE_DIRTY,
    821 				&ms->dirtyThrottling) ?
    822 	X_CONFIG : X_DEFAULT;
    823 
    824     if (ms->screen) {
    825 	ms->exa = xorg_exa_init(pScrn, ms->accelerate_2d);
    826 
    827 	xorg_xv_init(pScreen);
    828 #ifdef DRI2
    829 	xorg_dri2_init(pScreen);
    830 #endif
    831     }
    832 
    833     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "#################################\n");
    834     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "# Useful debugging info follows #\n");
    835     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "#################################\n");
    836     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Using %s backend\n",
    837 	       ms->screen ? "Gallium3D" : "libkms");
    838     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "2D Acceleration is %s\n",
    839 	       ms->screen && ms->accelerate_2d ? "enabled" : "disabled");
    840     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Fallback debugging is %s\n",
    841 	       ms->debug_fallback ? "enabled" : "disabled");
    842 #ifdef DRI2
    843     xf86DrvMsg(pScrn->scrnIndex, ms->from_3D, "3D Acceleration is %s\n",
    844 	       ms->screen ? "enabled" : "disabled");
    845 #else
    846     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "3D Acceleration is disabled\n");
    847 #endif
    848     xf86DrvMsg(pScrn->scrnIndex, from_st, "Swap Throttling is %s.\n",
    849 	       ms->swapThrottling ? "enabled" : "disabled");
    850     xf86DrvMsg(pScrn->scrnIndex, from_dt, "Dirty Throttling is %s.\n",
    851 	       ms->dirtyThrottling ? "enabled" : "disabled");
    852 
    853     xf86DrvMsg(pScrn->scrnIndex, X_INFO, "##################################\n");
    854 
    855     miInitializeBackingStore(pScreen);
    856     xf86SetBackingStore(pScreen);
    857     xf86SetSilkenMouse(pScreen);
    858     miDCInitialize(pScreen, xf86GetPointerScreenFuncs());
    859 
    860     /* Need to extend HWcursor support to handle mask interleave */
    861     if (!ms->SWCursor)
    862 	xf86_cursors_init(pScreen, 64, 64,
    863 			  HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64 |
    864 			  HARDWARE_CURSOR_ARGB |
    865 			  ((cust && cust->unhidden_hw_cursor_update) ?
    866 			   HARDWARE_CURSOR_UPDATE_UNHIDDEN : 0));
    867 
    868     /* Must force it before EnterVT, so we are in control of VT and
    869      * later memory should be bound when allocating, e.g rotate_mem */
    870     pScrn->vtSema = TRUE;
    871 
    872     pScreen->SaveScreen = xf86SaveScreen;
    873     ms->CloseScreen = pScreen->CloseScreen;
    874     pScreen->CloseScreen = drv_close_screen;
    875 
    876     if (!xf86CrtcScreenInit(pScreen))
    877 	return FALSE;
    878 
    879     if (!miCreateDefColormap(pScreen))
    880 	return FALSE;
    881     if (!xf86HandleColormaps(pScreen, 256, 8, drv_load_palette, NULL,
    882 			     CMAP_PALETTED_TRUECOLOR |
    883 			     CMAP_RELOAD_ON_MODE_SWITCH))
    884 	return FALSE;
    885 
    886     xf86DPMSInit(pScreen, xf86DPMSSet, 0);
    887 
    888     if (serverGeneration == 1)
    889 	xf86ShowUnusedOptions(pScrn->scrnIndex, pScrn->options);
    890 
    891     return drv_enter_vt_flags(pScrn, 1);
    892 }
    893 
    894 static void
    895 drv_adjust_frame(ADJUST_FRAME_ARGS_DECL)
    896 {
    897     SCRN_INFO_PTR(arg);
    898     xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
    899     xf86OutputPtr output = config->output[config->compat_output];
    900     xf86CrtcPtr crtc = output->crtc;
    901 
    902     if (crtc && crtc->enabled) {
    903 	crtc->funcs->set_mode_major(crtc, pScrn->currentMode,
    904 				    RR_Rotate_0, x, y);
    905 	crtc->x = output->initial_x + x;
    906 	crtc->y = output->initial_y + y;
    907     }
    908 }
    909 
    910 static void
    911 drv_free_screen(FREE_SCREEN_ARGS_DECL)
    912 {
    913     SCRN_INFO_PTR(arg);
    914     drv_free_rec(pScrn);
    915 }
    916 
    917 static void
    918 drv_leave_vt(VT_FUNC_ARGS_DECL)
    919 {
    920     SCRN_INFO_PTR(arg);
    921     modesettingPtr ms = modesettingPTR(pScrn);
    922     xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
    923     CustomizerPtr cust = ms->cust;
    924     int o;
    925 
    926     if (cust && cust->winsys_leave_vt)
    927 	cust->winsys_leave_vt(cust);
    928 
    929     for (o = 0; o < config->num_crtc; o++) {
    930 	xf86CrtcPtr crtc = config->crtc[o];
    931 
    932 	xorg_crtc_cursor_destroy(crtc);
    933 
    934 	if (crtc->rotatedPixmap || crtc->rotatedData) {
    935 	    crtc->funcs->shadow_destroy(crtc, crtc->rotatedPixmap,
    936 					crtc->rotatedData);
    937 	    crtc->rotatedPixmap = NULL;
    938 	    crtc->rotatedData = NULL;
    939 	}
    940     }
    941 
    942     if (ms->fb_id != -1) {
    943 	drmModeRmFB(ms->fd, ms->fb_id);
    944 	ms->fb_id = -1;
    945     }
    946 
    947     /* idle hardware */
    948     if (!ms->kms)
    949 	drv_cleanup_fences(pScrn);
    950 
    951     if (drmDropMaster(ms->fd))
    952 	xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
    953 		   "drmDropMaster failed: %s\n", strerror(errno));
    954 
    955     ms->isMaster = FALSE;
    956     pScrn->vtSema = FALSE;
    957 }
    958 
    959 /*
    960  * This gets called when gaining control of the VT, and from ScreenInit().
    961  */
    962 static Bool
    963 drv_enter_vt_flags(ScrnInfoPtr pScrn, int flags)
    964 {
    965     modesettingPtr ms = modesettingPTR(pScrn);
    966     CustomizerPtr cust = ms->cust;
    967 
    968     if (!drv_set_master(pScrn))
    969 	return FALSE;
    970 
    971     if (!ms->create_front_buffer(pScrn))
    972 	return FALSE;
    973 
    974     if (!flags && !ms->bind_front_buffer(pScrn))
    975 	return FALSE;
    976 
    977     if (!xf86SetDesiredModes(pScrn))
    978 	return FALSE;
    979 
    980     if (cust && cust->winsys_enter_vt)
    981 	cust->winsys_enter_vt(cust);
    982 
    983     return TRUE;
    984 }
    985 
    986 static Bool
    987 drv_enter_vt(VT_FUNC_ARGS_DECL)
    988 {
    989     SCRN_INFO_PTR(arg);
    990     return drv_enter_vt_flags(pScrn, 0);
    991 }
    992 
    993 static Bool
    994 drv_switch_mode(SWITCH_MODE_ARGS_DECL)
    995 {
    996     SCRN_INFO_PTR(arg);
    997 
    998     return xf86SetSingleMode(pScrn, mode, RR_Rotate_0);
    999 }
   1000 
   1001 static Bool
   1002 drv_close_screen(CLOSE_SCREEN_ARGS_DECL)
   1003 {
   1004     ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
   1005     modesettingPtr ms = modesettingPTR(pScrn);
   1006     CustomizerPtr cust = ms->cust;
   1007 
   1008     if (ms->cursor) {
   1009        FreeCursor(ms->cursor, None);
   1010        ms->cursor = NULL;
   1011     }
   1012 
   1013     if (cust && cust->winsys_screen_close)
   1014 	cust->winsys_screen_close(cust);
   1015 
   1016 #ifdef DRI2
   1017     if (ms->screen)
   1018 	xorg_dri2_close(pScreen);
   1019 #endif
   1020 
   1021     pScreen->BlockHandler = ms->blockHandler;
   1022     pScreen->CreateScreenResources = ms->createScreenResources;
   1023 
   1024 #ifdef DRM_MODE_FEATURE_DIRTYFB
   1025     if (ms->damage) {
   1026 	DamageUnregister(&pScreen->GetScreenPixmap(pScreen)->drawable, ms->damage);
   1027 	DamageDestroy(ms->damage);
   1028 	ms->damage = NULL;
   1029     }
   1030 #endif
   1031 
   1032     ms->destroy_front_buffer(pScrn);
   1033 
   1034     if (ms->exa)
   1035 	xorg_exa_close(pScrn);
   1036     ms->exa = NULL;
   1037 
   1038     /* calls drop master make sure we don't talk to 3D HW after that */
   1039     if (pScrn->vtSema) {
   1040 	drv_leave_vt(VT_FUNC_ARGS);
   1041     }
   1042 
   1043     pScrn->vtSema = FALSE;
   1044     pScreen->CloseScreen = ms->CloseScreen;
   1045 
   1046     return (*pScreen->CloseScreen) (CLOSE_SCREEN_ARGS);
   1047 }
   1048 
   1049 static ModeStatus
   1050 drv_valid_mode(SCRN_ARG_TYPE arg, DisplayModePtr mode, Bool verbose, int flags)
   1051 {
   1052     return MODE_OK;
   1053 }
   1054 
   1055 
   1056 /*
   1057  * Front buffer backing store functions.
   1058  */
   1059 
   1060 static Bool
   1061 drv_destroy_front_buffer_ga3d(ScrnInfoPtr pScrn)
   1062 {
   1063     modesettingPtr ms = modesettingPTR(pScrn);
   1064 
   1065     if (!ms->root_texture)
   1066 	return TRUE;
   1067 
   1068     if (ms->fb_id != -1) {
   1069 	drmModeRmFB(ms->fd, ms->fb_id);
   1070 	ms->fb_id = -1;
   1071     }
   1072 
   1073     pipe_resource_reference(&ms->root_texture, NULL);
   1074     return TRUE;
   1075 }
   1076 
   1077 static Bool
   1078 drv_create_front_buffer_ga3d(ScrnInfoPtr pScrn)
   1079 {
   1080     modesettingPtr ms = modesettingPTR(pScrn);
   1081     struct pipe_resource *tex;
   1082     struct winsys_handle whandle;
   1083     unsigned fb_id;
   1084     int ret;
   1085 
   1086     ms->noEvict = TRUE;
   1087 
   1088     tex = xorg_exa_create_root_texture(pScrn, pScrn->virtualX, pScrn->virtualY,
   1089 				       pScrn->depth, pScrn->bitsPerPixel);
   1090 
   1091     if (!tex)
   1092 	return FALSE;
   1093 
   1094     memset(&whandle, 0, sizeof(whandle));
   1095     whandle.type = DRM_API_HANDLE_TYPE_KMS;
   1096 
   1097     if (!ms->screen->resource_get_handle(ms->screen, tex, &whandle))
   1098 	goto err_destroy;
   1099 
   1100     ret = drmModeAddFB(ms->fd,
   1101 		       pScrn->virtualX,
   1102 		       pScrn->virtualY,
   1103 		       pScrn->depth,
   1104 		       pScrn->bitsPerPixel,
   1105 		       whandle.stride,
   1106 		       whandle.handle,
   1107 		       &fb_id);
   1108     if (ret) {
   1109 	debug_printf("%s: failed to create framebuffer (%i, %s)\n",
   1110 		     __func__, ret, strerror(-ret));
   1111 	goto err_destroy;
   1112     }
   1113 
   1114     if (!drv_destroy_front_buffer_ga3d(pScrn))
   1115 	FatalError("%s: failed to take down old framebuffer\n", __func__);
   1116 
   1117     pScrn->frameX0 = 0;
   1118     pScrn->frameY0 = 0;
   1119     drv_adjust_frame(ADJUST_FRAME_ARGS(pScrn, pScrn->frameX0, pScrn->frameY0));
   1120 
   1121     pipe_resource_reference(&ms->root_texture, tex);
   1122     pipe_resource_reference(&tex, NULL);
   1123     ms->fb_id = fb_id;
   1124 
   1125     return TRUE;
   1126 
   1127 err_destroy:
   1128     pipe_resource_reference(&tex, NULL);
   1129     return FALSE;
   1130 }
   1131 
   1132 static Bool
   1133 drv_bind_front_buffer_ga3d(ScrnInfoPtr pScrn)
   1134 {
   1135     modesettingPtr ms = modesettingPTR(pScrn);
   1136     ScreenPtr pScreen = pScrn->pScreen;
   1137     PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
   1138     struct pipe_resource *check;
   1139 
   1140     xorg_exa_set_displayed_usage(rootPixmap);
   1141     xorg_exa_set_shared_usage(rootPixmap);
   1142     xorg_exa_set_texture(rootPixmap, ms->root_texture);
   1143     if (!pScreen->ModifyPixmapHeader(rootPixmap, -1, -1, -1, -1, -1, NULL))
   1144 	FatalError("Couldn't adjust screen pixmap\n");
   1145 
   1146     check = xorg_exa_get_texture(rootPixmap);
   1147     if (ms->root_texture != check)
   1148 	FatalError("Created new root texture\n");
   1149 
   1150     pipe_resource_reference(&check, NULL);
   1151     return TRUE;
   1152 }
   1153 
   1154 #ifdef HAVE_LIBKMS
   1155 static Bool
   1156 drv_destroy_front_buffer_kms(ScrnInfoPtr pScrn)
   1157 {
   1158     modesettingPtr ms = modesettingPTR(pScrn);
   1159     ScreenPtr pScreen = pScrn->pScreen;
   1160     PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
   1161 
   1162     /* XXX Do something with the rootPixmap.
   1163      * This currently works fine but if we are getting crashes in
   1164      * the fb functions after VT switches maybe look more into it.
   1165      */
   1166     (void)rootPixmap;
   1167 
   1168     if (!ms->root_bo)
   1169 	return TRUE;
   1170 
   1171     if (ms->fb_id != -1) {
   1172 	drmModeRmFB(ms->fd, ms->fb_id);
   1173 	ms->fb_id = -1;
   1174     }
   1175 
   1176     kms_bo_unmap(ms->root_bo);
   1177     kms_bo_destroy(&ms->root_bo);
   1178     return TRUE;
   1179 }
   1180 
   1181 static Bool
   1182 drv_create_front_buffer_kms(ScrnInfoPtr pScrn)
   1183 {
   1184     modesettingPtr ms = modesettingPTR(pScrn);
   1185     unsigned handle, stride;
   1186     struct kms_bo *bo;
   1187     unsigned attr[8];
   1188     unsigned fb_id;
   1189     int ret;
   1190 
   1191     attr[0] = KMS_BO_TYPE;
   1192 #ifdef KMS_BO_TYPE_SCANOUT_X8R8G8B8
   1193     attr[1] = KMS_BO_TYPE_SCANOUT_X8R8G8B8;
   1194 #else
   1195     attr[1] = KMS_BO_TYPE_SCANOUT;
   1196 #endif
   1197     attr[2] = KMS_WIDTH;
   1198     attr[3] = pScrn->virtualX;
   1199     attr[4] = KMS_HEIGHT;
   1200     attr[5] = pScrn->virtualY;
   1201     attr[6] = 0;
   1202 
   1203     if (kms_bo_create(ms->kms, attr, &bo))
   1204 	return FALSE;
   1205 
   1206     if (kms_bo_get_prop(bo, KMS_PITCH, &stride))
   1207 	goto err_destroy;
   1208 
   1209     if (kms_bo_get_prop(bo, KMS_HANDLE, &handle))
   1210 	goto err_destroy;
   1211 
   1212     ret = drmModeAddFB(ms->fd,
   1213 		       pScrn->virtualX,
   1214 		       pScrn->virtualY,
   1215 		       pScrn->depth,
   1216 		       pScrn->bitsPerPixel,
   1217 		       stride,
   1218 		       handle,
   1219 		       &fb_id);
   1220     if (ret) {
   1221 	debug_printf("%s: failed to create framebuffer (%i, %s)",
   1222 		     __func__, ret, strerror(-ret));
   1223 	goto err_destroy;
   1224     }
   1225 
   1226     if (!drv_destroy_front_buffer_kms(pScrn))
   1227 	FatalError("%s: could not takedown old bo", __func__);
   1228 
   1229     pScrn->frameX0 = 0;
   1230     pScrn->frameY0 = 0;
   1231     drv_adjust_frame(ADJUST_FRAME_ARGS(pScrn, pScrn->frameX0, pScrn->frameY0));
   1232     ms->root_bo = bo;
   1233     ms->fb_id = fb_id;
   1234 
   1235     return TRUE;
   1236 
   1237 err_destroy:
   1238     kms_bo_destroy(&bo);
   1239     return FALSE;
   1240 }
   1241 
   1242 static Bool
   1243 drv_bind_front_buffer_kms(ScrnInfoPtr pScrn)
   1244 {
   1245     modesettingPtr ms = modesettingPTR(pScrn);
   1246     ScreenPtr pScreen = pScrn->pScreen;
   1247     PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
   1248     unsigned stride;
   1249     void *ptr;
   1250 
   1251     if (kms_bo_get_prop(ms->root_bo, KMS_PITCH, &stride))
   1252 	return FALSE;
   1253 
   1254     if (kms_bo_map(ms->root_bo, &ptr))
   1255 	goto err_destroy;
   1256 
   1257     pScreen->ModifyPixmapHeader(rootPixmap,
   1258 				pScrn->virtualX,
   1259 				pScrn->virtualY,
   1260 				pScreen->rootDepth,
   1261 				pScrn->bitsPerPixel,
   1262 				stride,
   1263 				ptr);
   1264 
   1265 #if (XORG_VERSION_CURRENT < XORG_VERSION_NUMERIC(1, 9, 99, 1, 0))
   1266 
   1267     /* This a hack to work around EnableDisableFBAccess setting the pointer
   1268      * the real fix would be to replace pScrn->EnableDisableFBAccess hook
   1269      * and set the rootPixmap->devPrivate.ptr to something valid before that.
   1270      *
   1271      * But in its infinit visdome something uses either this some times before
   1272      * that, so our hook doesn't get called before the crash happens.
   1273      */
   1274     pScrn->pixmapPrivate.ptr = ptr;
   1275 
   1276 #endif
   1277 
   1278     return TRUE;
   1279 
   1280 err_destroy:
   1281     kms_bo_destroy(&ms->root_bo);
   1282     return FALSE;
   1283 }
   1284 #endif /* HAVE_LIBKMS */
   1285 
   1286 static Bool drv_init_front_buffer_functions(ScrnInfoPtr pScrn)
   1287 {
   1288     modesettingPtr ms = modesettingPTR(pScrn);
   1289     if (ms->screen) {
   1290 	ms->destroy_front_buffer = drv_destroy_front_buffer_ga3d;
   1291 	ms->create_front_buffer = drv_create_front_buffer_ga3d;
   1292 	ms->bind_front_buffer = drv_bind_front_buffer_ga3d;
   1293 #ifdef HAVE_LIBKMS
   1294     } else if (ms->kms) {
   1295 	ms->destroy_front_buffer = drv_destroy_front_buffer_kms;
   1296 	ms->create_front_buffer = drv_create_front_buffer_kms;
   1297 	ms->bind_front_buffer = drv_bind_front_buffer_kms;
   1298 #endif
   1299     } else
   1300 	return FALSE;
   1301 
   1302     return TRUE;
   1303 }
   1304 
   1305 CustomizerPtr xorg_customizer(ScrnInfoPtr pScrn)
   1306 {
   1307     return modesettingPTR(pScrn)->cust;
   1308 }
   1309 
   1310 Bool xorg_has_gallium(ScrnInfoPtr pScrn)
   1311 {
   1312     return modesettingPTR(pScrn)->screen != NULL;
   1313 }
   1314 
   1315 /* vim: set sw=4 ts=8 sts=4: */
   1316