i830_rotate.c

来自「是由intel提供的针对intel显卡915以上系列的linux驱动」· C语言 代码 · 共 1,181 行 · 第 1/3 页

         if (reAllocate)
            xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		    "Rotating Screen to 270 degrees\n");
         pScrn->displayWidth = pScrn->pScreen->width;
         break;
   }

   /* As DRI doesn't run on the secondary head, we know that disableTiling
    * is always TRUE.
    */
   if (I830IsPrimary(pScrn) && !pI830->disableTiling) {
#if 0
      int dWidth = pScrn->displayWidth; /* save current displayWidth */
#endif

      for (i = 0; pitches[i] != 0; i++) {
         if (pitches[i] >= pScrn->displayWidth) {
            pScrn->displayWidth = pitches[i];
            break;
         }
      }

      /*
       * If the displayWidth is a tilable pitch, test if there's enough
       * memory available to enable tiling.
       */
      if (pScrn->displayWidth == pitches[i]) {
  	/* TODO */
      }
   }

   if (reAllocate) {
      if (pI830->entityPrivate) {
         if (pI8302->rotation != RR_Rotate_0) {
            if (!I830AllocateRotated2Buffer(pScrn1, 
			      pI8302->disableTiling ? ALLOC_NO_TILING : 0))
               goto BAIL0;

            I830FixOffset(pScrn1, &(pI8301->RotatedMem2));
            if (pI8301->RotatedMem2.Key != -1)
               I830BindGARTMemory(pScrn1->scrnIndex, pI8301->RotatedMem2.Key, pI8301->RotatedMem2.Offset);
         }
      }

      if (pI8301->rotation != RR_Rotate_0) {
         if (!I830AllocateRotatedBuffer(pScrn1, 
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
            goto BAIL1;

         I830FixOffset(pScrn1, &(pI8301->RotatedMem));
         if (pI8301->RotatedMem.Key != -1)
            I830BindGARTMemory(pScrn1->scrnIndex, pI8301->RotatedMem.Key, pI8301->RotatedMem.Offset);
      }
   }
   
   I830shadowUnset (pScrn->pScreen);
   if (pI830->rotation != RR_Rotate_0)
      I830shadowSet (pScrn->pScreen, 
                    (*pScrn->pScreen->GetScreenPixmap) (pScrn->pScreen), 
		    pI830->noAccel ? I830shadowUpdateRotatePacked : func, 
                    I830WindowLinear, pI830->rotation, 0);

   if (I830IsPrimary(pScrn)) {
      if (pI830->rotation != RR_Rotate_0)
         pScrn->fbOffset = pI830->RotatedMem.Start;
      else
         pScrn->fbOffset = pI830->FrontBuffer.Start;
      if (pI830->entityPrivate) {
         if (pI8302->rotation != RR_Rotate_0) 
            pScrn2->fbOffset = pI8301->RotatedMem2.Start;
         else
            pScrn2->fbOffset = pI8301->FrontBuffer2.Start;
         I830SelectBuffer(pScrn2, I830_SELECT_FRONT);
      }
   } else {
      if (pI830->rotation != RR_Rotate_0)
         pScrn->fbOffset = pI8301->RotatedMem2.Start;
      else
         pScrn->fbOffset = pI8301->FrontBuffer2.Start;
      if (pI8301->rotation != RR_Rotate_0)
         pScrn1->fbOffset = pI8301->RotatedMem.Start;
      else
         pScrn1->fbOffset = pI8301->FrontBuffer.Start;
      I830SelectBuffer(pScrn1, I830_SELECT_FRONT);
   }
   I830SelectBuffer(pScrn, I830_SELECT_FRONT);

#ifdef XF86DRI
   if (pI8301->directRenderingEnabled && reAllocate) {
      if (!I830AllocateBackBuffer(pScrn1,
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
         goto BAIL2;

      if (!I830AllocateDepthBuffer(pScrn1,
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
         goto BAIL3;

      if (!I830AllocateTextureMemory(pScrn1,
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
         goto BAIL4;

      I830DoPoolAllocation(pScrn1, &(pI8301->StolenPool));

      I830FixOffset(pScrn1, &(pI8301->BackBuffer));
      I830FixOffset(pScrn1, &(pI8301->DepthBuffer));

      if (pI8301->BackBuffer.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->BackBuffer.Key, pI8301->BackBuffer.Offset);
      if (pI8301->DepthBuffer.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->DepthBuffer.Key, pI8301->DepthBuffer.Offset);
      if (pI8301->StolenPool.Allocated.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->StolenPool.Allocated.Key, pI8301->StolenPool.Allocated.Offset);
      if (pI8301->TexMem.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->TexMem.Key, pI8301->TexMem.Offset);
      I830SetupMemoryTiling(pScrn1);
      /* update fence registers */
      for (i = 0; i < 8; i++) 
         OUTREG(FENCE + i * 4, pI8301->ModeReg.Fence[i]);
      {
         drmI830Sarea *sarea = DRIGetSAREAPrivate(pScrn1->pScreen);
         I830UpdateDRIBuffers(pScrn1, sarea );
      }
      
      if (didLock)
	 I830DRIUnlock(pScrn1);
   }
#endif

#if 0
   if (I830IsPrimary(pScrn)) {
      pI830->xoffset = (pI830->FrontBuffer.Start / pI830->cpp) % pI830->displayWidth;
      pI830->yoffset = (pI830->FrontBuffer.Start / pI830->cpp) / pI830->displayWidth;
   } else {
      I830Ptr pI8301 = I830PTR(pI830->entityPrivate->pScrn_1);
      pI830->xoffset = (pI8301->FrontBuffer2.Start / pI830->cpp) % pI830->displayWidth;
      pI830->yoffset = (pI8301->FrontBuffer2.Start / pI830->cpp) / pI830->displayWidth;
   }
#endif

   pScrn->pScreen->ModifyPixmapHeader((*pScrn->pScreen->GetScreenPixmap)(pScrn->pScreen), pScrn->pScreen->width,
		    pScrn->pScreen->height, pScrn->pScreen->rootDepth, pScrn->bitsPerPixel,
		    PixmapBytePad(pScrn->displayWidth, pScrn->pScreen->rootDepth), 
		    (pointer)(pI8301->FbBase + pScrn->fbOffset));

   if (pI830->entityPrivate) {
      if (I830IsPrimary(pScrn)) {
         if (!pI830->starting) {
            pScrn2->pScreen->ModifyPixmapHeader((*pScrn2->pScreen->GetScreenPixmap)(pScrn2->pScreen), pScrn2->pScreen->width,
		    pScrn2->pScreen->height, pScrn2->pScreen->rootDepth, pScrn2->bitsPerPixel,
		    PixmapBytePad(pScrn2->displayWidth, pScrn2->pScreen->rootDepth), 
		    (pointer)(pI8301->FbBase + pScrn2->fbOffset));

            /* Repaint the second head */
            (*pScrn2->EnableDisableFBAccess) (pScrn2->pScreen->myNum, FALSE);
            (*pScrn2->EnableDisableFBAccess) (pScrn2->pScreen->myNum, TRUE);
         }
      } else {
         if (!pI830->starting) {
            pScrn1->pScreen->ModifyPixmapHeader((*pScrn1->pScreen->GetScreenPixmap)(pScrn1->pScreen), pScrn1->pScreen->width,
		    pScrn1->pScreen->height, pScrn1->pScreen->rootDepth, pScrn1->bitsPerPixel,
		    PixmapBytePad(pScrn1->displayWidth, pScrn1->pScreen->rootDepth), 
		    (pointer)(pI8301->FbBase + pScrn1->fbOffset));

            /* Repaint the first head */
            (*pScrn1->EnableDisableFBAccess) (pScrn1->pScreen->myNum, FALSE);
            (*pScrn1->EnableDisableFBAccess) (pScrn1->pScreen->myNum, TRUE);
         }
      }
   }

   /* Don't allow pixmap cache or offscreen pixmaps when rotated */
   /* XAA needs some serious fixing for this to happen */
   if (pI830->rotation == RR_Rotate_0) {
      pI830->AccelInfoRec->Flags = LINEAR_FRAMEBUFFER | OFFSCREEN_PIXMAPS | PIXMAP_CACHE;
      pI830->AccelInfoRec->UsingPixmapCache = TRUE;
      /* funny as it seems this will enable XAA's createpixmap */
      pI830->AccelInfoRec->maxOffPixWidth = 0;
      pI830->AccelInfoRec->maxOffPixHeight = 0;
   } else {
      pI830->AccelInfoRec->Flags = LINEAR_FRAMEBUFFER;
      pI830->AccelInfoRec->UsingPixmapCache = FALSE;
      /* funny as it seems this will disable XAA's createpixmap */
      pI830->AccelInfoRec->maxOffPixWidth = 1;
      pI830->AccelInfoRec->maxOffPixHeight = 1;
   }

   return TRUE;

BAIL4:
#ifdef XF86DRI
   if (pI8301->directRenderingEnabled)
      I830FreeVidMem(pScrn1, &(pI8301->DepthBuffer));
#endif
BAIL3:
#ifdef XF86DRI
   if (pI8301->directRenderingEnabled)
      I830FreeVidMem(pScrn1, &(pI8301->BackBuffer));
#endif
BAIL2:
   if (pI8301->rotation != RR_Rotate_0) {
      if (pI8301->RotatedMem.Key != -1)
         I830UnbindGARTMemory(pScrn1->scrnIndex, pI8301->RotatedMem.Key);
  
      I830FreeVidMem(pScrn1, &(pI8301->RotatedMem));
      memset(&(pI8301->RotatedMem), 0, sizeof(pI8301->RotatedMem));
      pI8301->RotatedMem.Key = -1;
   }
BAIL1:
   if (pI830->entityPrivate) {
      if (pI8302->rotation != RR_Rotate_0) {
         if (pI8301->RotatedMem.Key != -1)
            I830UnbindGARTMemory(pScrn1->scrnIndex, pI8301->RotatedMem.Key);

         I830FreeVidMem(pScrn1, &(pI8301->RotatedMem));
         memset(&(pI8301->RotatedMem), 0, sizeof(pI8301->RotatedMem));
         pI8301->RotatedMem.Key = -1;
      }
   }
BAIL0:
   pScrn->displayWidth = displayWidth;

   /* must flip mmWidth & mmHeight */
   if ( ((oldRotation & (RR_Rotate_90 | RR_Rotate_270)) &&
	 (pI830->rotation & (RR_Rotate_0 | RR_Rotate_180))) ||
        ((oldRotation & (RR_Rotate_0 | RR_Rotate_180)) &&
	 (pI830->rotation & (RR_Rotate_90 | RR_Rotate_270))) ) {
      int tmp = pScrn->pScreen->mmWidth;
      pScrn->pScreen->mmWidth = pScrn->pScreen->mmHeight;
      pScrn->pScreen->mmHeight = tmp;
   }

   if (oldRotation & (RR_Rotate_0 | RR_Rotate_180)) {
      pScrn->pScreen->width = pScrn->virtualX;
      pScrn->pScreen->height = pScrn->virtualY;
   } else {
      pScrn->pScreen->width = pScrn->virtualY;
      pScrn->pScreen->height = pScrn->virtualX;
   }

   pI830->rotation = oldRotation;

   if (pI830->entityPrivate) {
      if (pI8302->rotation != RR_Rotate_0) {
         if (!I830AllocateRotated2Buffer(pScrn1, 
			      pI8302->disableTiling ? ALLOC_NO_TILING : 0))
            xf86DrvMsg(pScrn->scrnIndex, X_INFO, 
		    "Oh dear, the rotated2 buffer failed - badness\n");

         I830FixOffset(pScrn1, &(pI8301->RotatedMem2));
         if (pI8301->RotatedMem2.Key != -1)
            I830BindGARTMemory(pScrn1->scrnIndex, pI8301->RotatedMem2.Key, pI8301->RotatedMem2.Offset);
      }
   }

   if (pI8301->rotation != RR_Rotate_0) {
      if (!I830AllocateRotatedBuffer(pScrn1, 
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
         xf86DrvMsg(pScrn->scrnIndex, X_INFO, 
		    "Oh dear, the rotated buffer failed - badness\n");

      I830FixOffset(pScrn1, &(pI8301->RotatedMem));
      if (pI8301->RotatedMem.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->RotatedMem.Key, pI8301->RotatedMem.Offset);
   }

   I830shadowUnset (pScrn->pScreen);
   if (pI830->rotation != RR_Rotate_0)
      I830shadowSet (pScrn->pScreen, 
                    (*pScrn->pScreen->GetScreenPixmap) (pScrn->pScreen), 
		    pI830->noAccel ? I830shadowUpdateRotatePacked : func, 
                    I830WindowLinear, pI830->rotation, 0);

   if (I830IsPrimary(pScrn)) {
      if (pI830->rotation != RR_Rotate_0)
         pScrn->fbOffset = pI830->RotatedMem.Start;
      else
         pScrn->fbOffset = pI830->FrontBuffer.Start;
      if (pI830->entityPrivate) {
         if (pI8302->rotation != RR_Rotate_0) 
            pScrn2->fbOffset = pI8301->RotatedMem2.Start;
         else
            pScrn2->fbOffset = pI8301->FrontBuffer2.Start;
         I830SelectBuffer(pScrn2, I830_SELECT_FRONT);
      }
   } else {
      if (pI830->rotation != RR_Rotate_0)
         pScrn->fbOffset = pI8301->RotatedMem2.Start;
      else
         pScrn->fbOffset = pI8301->FrontBuffer2.Start;
      if (pI8301->rotation != RR_Rotate_0)
         pScrn1->fbOffset = pI8301->RotatedMem.Start;
      else
         pScrn1->fbOffset = pI8301->FrontBuffer.Start;
      I830SelectBuffer(pScrn1, I830_SELECT_FRONT);
   }
   I830SelectBuffer(pScrn, I830_SELECT_FRONT);

   xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		    "Reverting to previous configured mode\n");

   switch (oldRotation) {
      case RR_Rotate_0:
         xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		    "Rotating Screen back to 0 degrees\n");
         break;
      case RR_Rotate_90:
         xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		    "Rotating Screen back to 90 degrees\n");
         break;
      case RR_Rotate_180:
         xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		    "Rotating Screen back to 180 degrees\n");
         break;
      case RR_Rotate_270:
         xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		    "Rotating Screen back to 270 degrees\n");
         break;
   }

#ifdef XF86DRI
   if (pI8301->directRenderingEnabled) {
      if (!I830AllocateBackBuffer(pScrn1,
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
         xf86DrvMsg(pScrn1->scrnIndex, X_INFO, 
		    "Oh dear, the back buffer failed - badness\n");

      if (!I830AllocateDepthBuffer(pScrn1,
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
         xf86DrvMsg(pScrn1->scrnIndex, X_INFO, 
		    "Oh dear, the depth buffer failed - badness\n");

      if (!I830AllocateTextureMemory(pScrn1,
			      pI8301->disableTiling ? ALLOC_NO_TILING : 0))
         xf86DrvMsg(pScrn1->scrnIndex, X_INFO, 
		    "Oh dear, the texture cache failed - badness\n");

      I830DoPoolAllocation(pScrn1, &(pI8301->StolenPool));

      I830FixOffset(pScrn1, &(pI8301->BackBuffer));
      I830FixOffset(pScrn1, &(pI8301->DepthBuffer));

      if (pI8301->BackBuffer.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->BackBuffer.Key, pI8301->BackBuffer.Offset);
      if (pI8301->DepthBuffer.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->DepthBuffer.Key, pI8301->DepthBuffer.Offset);
      if (pI8301->StolenPool.Allocated.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->StolenPool.Allocated.Key, pI8301->StolenPool.Allocated.Offset);
      if (pI8301->TexMem.Key != -1)
         I830BindGARTMemory(pScrn1->scrnIndex, pI8301->TexMem.Key, pI8301->TexMem.Offset);
      I830SetupMemoryTiling(pScrn1);
      /* update fence registers */
      for (i = 0; i < 8; i++) 
         OUTREG(FENCE + i * 4, pI8301->ModeReg.Fence[i]);
      { 
         drmI830Sarea *sarea = DRIGetSAREAPrivate(pScrn1->pScreen);
         I830UpdateDRIBuffers(pScrn1, sarea );
      }
      
      if (didLock)
	 I830DRIUnlock(pScrn1);
   }
#endif

   pScrn->pScreen->ModifyPixmapHeader((*pScrn->pScreen->GetScreenPixmap)(pScrn->pScreen), pScrn->pScreen->width,
		    pScrn->pScreen->height, pScrn->pScreen->rootDepth, pScrn->bitsPerPixel,
		    PixmapBytePad(pScrn->displayWidth, pScrn->pScreen->rootDepth), 
		    (pointer)(pI8301->FbBase + pScrn->fbOffset));

   if (pI830->entityPrivate) {
      if (I830IsPrimary(pScrn)) {
         pScrn2->pScreen->ModifyPixmapHeader((*pScrn2->pScreen->GetScreenPixmap)(pScrn2->pScreen), pScrn2->pScreen->width,
		    pScrn2->pScreen->height, pScrn2->pScreen->rootDepth, pScrn2->bitsPerPixel,
		    PixmapBytePad(pScrn2->displayWidth, pScrn2->pScreen->rootDepth), 
		    (pointer)(pI8301->FbBase + pScrn2->fbOffset));

         /* Repaint the second head */
         (*pScrn2->EnableDisableFBAccess) (pScrn2->pScreen->myNum, FALSE);
         (*pScrn2->EnableDisableFBAccess) (pScrn2->pScreen->myNum, TRUE);
      } else {
         pScrn1->pScreen->ModifyPixmapHeader((*pScrn1->pScreen->GetScreenPixmap)(pScrn1->pScreen), pScrn1->pScreen->width,
		    pScrn1->pScreen->height, pScrn1->pScreen->rootDepth, pScrn1->bitsPerPixel,
		    PixmapBytePad(pScrn1->displayWidth, pScrn1->pScreen->rootDepth), 
		    (pointer)(pI8301->FbBase + pScrn1->fbOffset));

         /* Repaint the first head */
         (*pScrn1->EnableDisableFBAccess) (pScrn1->pScreen->myNum, FALSE);
         (*pScrn1->EnableDisableFBAccess) (pScrn1->pScreen->myNum, TRUE);
      }
   }

   return FALSE;
}