atidri.c

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      xf86DrvMsg( pScreen->myNum, X_ERROR, "[agp] Could not bind\n" );
      drmAgpFree( pATI->drmFD, pATIDRIServer->agpHandle );
      drmAgpRelease( pATI->drmFD );
      return FALSE;
   }

   xf86DrvMsg(pScreen->myNum, X_INFO,
	      "[agp] Using %d kB for DMA descriptor ring\n", pATIDRIServer->ringSize);

   if (pATI->OptionBufferSize) {
      if (pATI->OptionBufferSize < 1 || pATI->OptionBufferSize > pATIDRIServer->agpSize  ) {
	 xf86DrvMsg( pScreen->myNum, X_ERROR, "[agp] Illegal DMA buffers size: %d MB\n",
		     pATI->OptionBufferSize );
	 return FALSE;
      }
      if (pATI->OptionBufferSize > 2) {
	 xf86DrvMsg( pScreen->myNum, X_WARNING, "[agp] Illegal DMA buffers size: %d MB\n",
		     pATI->OptionBufferSize );
	 xf86DrvMsg( pScreen->myNum, X_WARNING, "[agp] Clamping DMA buffers size to 2 MB\n");
	 pATIDRIServer->bufferSize = 2;
      } else {
	 pATIDRIServer->bufferSize = pATI->OptionBufferSize;
	 xf86DrvMsg( pScreen->myNum, X_CONFIG, "[agp] Using %d MB for DMA buffers\n",
		     pATIDRIServer->bufferSize );
      }
   } else {
      xf86DrvMsg( pScreen->myNum, X_DEFAULT, "[agp] Using %d MB for DMA buffers\n",
		  pATIDRIServer->bufferSize );
   }

   pATIDRIServer->agpTexSize    = pATIDRIServer->agpSize - pATIDRIServer->bufferSize;

   /* Reserve space for the DMA descriptor ring */
   pATIDRIServer->ringStart   = pATIDRIServer->agpOffset;
   pATIDRIServer->ringMapSize = pATIDRIServer->ringSize*1024; /* ringSize is in kB */

   /* Reserve space for the vertex buffer */
   pATIDRIServer->bufferStart   = pATIDRIServer->ringStart + pATIDRIServer->ringMapSize;
   pATIDRIServer->bufferMapSize = pATIDRIServer->bufferSize*1024*1024;
    
   /* Reserve the rest for AGP textures */
   pATIDRIServer->agpTexStart = pATIDRIServer->bufferStart + pATIDRIServer->bufferMapSize;
   s = (pATIDRIServer->agpSize*1024*1024 - pATIDRIServer->agpTexStart);
   l = Mach64MinBits((s-1) / MACH64_NR_TEX_REGIONS);
   if (l < MACH64_LOG_TEX_GRANULARITY) l = MACH64_LOG_TEX_GRANULARITY;
   pATIDRIServer->agpTexMapSize   = (s >> l) << l;
   pATIDRIServer->log2AGPTexGran  = l;

   xf86DrvMsg(pScreen->myNum, X_INFO,
	      "[agp] Using %d kB for AGP textures\n", pATIDRIServer->agpTexMapSize/1024);

   /* Map DMA descriptor ring */
   if ( drmAddMap( pATI->drmFD, pATIDRIServer->ringStart, pATIDRIServer->ringMapSize,
		   DRM_AGP, DRM_RESTRICTED, &pATIDRIServer->ringHandle ) < 0 ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[agp] Could not add ring mapping\n" );
      return FALSE;
   }
   xf86DrvMsg( pScreen->myNum, X_INFO,
	       "[agp] ring handle = 0x%08x\n",
	       pATIDRIServer->ringHandle );

   if ( drmMap( pATI->drmFD, pATIDRIServer->ringHandle,
		pATIDRIServer->ringMapSize, &pATIDRIServer->ringMap ) < 0 ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[agp] Could not map ring\n" );
      return FALSE;
   }
   xf86DrvMsg( pScreen->myNum, X_INFO,
	       "[agp] Ring mapped at 0x%08lx\n",
	       (unsigned long)pATIDRIServer->ringMap );

   /* Map vertex buffers */
   if ( drmAddMap( pATI->drmFD, pATIDRIServer->bufferStart, pATIDRIServer->bufferMapSize,
		   DRM_AGP, 0, &pATIDRIServer->bufferHandle ) < 0 ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[agp] Could not add vertex buffers mapping\n" );
      return FALSE;
   }
   xf86DrvMsg( pScreen->myNum, X_INFO,
	       "[agp] vertex buffers handle = 0x%08x\n",
	       pATIDRIServer->bufferHandle );

   if ( drmMap( pATI->drmFD, pATIDRIServer->bufferHandle,
		pATIDRIServer->bufferMapSize, &pATIDRIServer->bufferMap ) < 0 ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[agp] Could not map vertex buffers\n" );
      return FALSE;
   }
   xf86DrvMsg( pScreen->myNum, X_INFO,
	       "[agp] Vertex buffers mapped at 0x%08lx\n",
	       (unsigned long)pATIDRIServer->bufferMap );

   /* Map AGP Textures */
   if (drmAddMap(pATI->drmFD, pATIDRIServer->agpTexStart, pATIDRIServer->agpTexMapSize,
		 DRM_AGP, 0, &pATIDRIServer->agpTexHandle) < 0) {
      xf86DrvMsg(pScreen->myNum, X_ERROR,
		 "[agp] Could not add AGP texture region mapping\n");
      return FALSE;
   }
   xf86DrvMsg(pScreen->myNum, X_INFO,
	      "[agp] AGP texture region handle = 0x%08x\n",
	      pATIDRIServer->agpTexHandle);

   if (drmMap(pATI->drmFD, pATIDRIServer->agpTexHandle, pATIDRIServer->agpTexMapSize,
	      &pATIDRIServer->agpTexMap) < 0) {
      xf86DrvMsg(pScreen->myNum, X_ERROR,
		 "[agp] Could not map AGP texture region\n");
      return FALSE;
   }
   xf86DrvMsg(pScreen->myNum, X_INFO,
	      "[agp] AGP Texture region mapped at 0x%08lx\n",
	      (unsigned long)pATIDRIServer->agpTexMap);

   /* Initialize Mach64's AGP registers */
   cntl  = inm( AGP_CNTL );
   cntl &= ~AGP_APER_SIZE_MASK;
   switch ( pATIDRIServer->agpSize ) {
   case 256: cntl |= AGP_APER_SIZE_256MB; break;
   case 128: cntl |= AGP_APER_SIZE_128MB; break;
   case  64: cntl |= AGP_APER_SIZE_64MB;  break;
   case  32: cntl |= AGP_APER_SIZE_32MB;  break;
   case  16: cntl |= AGP_APER_SIZE_16MB;  break;
   case   8: cntl |= AGP_APER_SIZE_8MB;   break;
   case   4: cntl |= AGP_APER_SIZE_4MB;   break;
   default:
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[agp] Illegal aperture size %d kB\n",
		  pATIDRIServer->agpSize*1024 );
      return FALSE;
   }

   /* 1 = DATA comes in clock in which TRDY sampled (default) */
   /* 0 = DATA comes in clock after TRDY sampled */
   cntl |= AGP_TRDY_MODE;

   /* 1 = generate all reads as high priority */
   /* 0 = generate all reads as their default priority (default) */
   /* Setting this only works for me at AGP 1x mode (LLD) */
   if (pATIDRIServer->agpMode == 1) {
      cntl |= HIGH_PRIORITY_READ_EN;
   } else {
      cntl &= ~HIGH_PRIORITY_READ_EN;
   }

   outm( AGP_BASE, drmAgpBase(pATI->drmFD) );
   outm( AGP_CNTL, cntl );

   return TRUE;
}

/* Add a map for the MMIO registers that will be accessed by any
 * DRI-based clients.
 */
static Bool ATIDRIMapInit( ScreenPtr pScreen )
{
   ScrnInfoPtr pScreenInfo = xf86Screens[pScreen->myNum];
   ATIPtr pATI = ATIPTR(pScreenInfo);
   ATIDRIServerInfoPtr pATIDRIServer = pATI->pDRIServerInfo;

   pATIDRIServer->regsSize = getpagesize();
   if ( drmAddMap( pATI->drmFD, pATI->Block1Base,
		   pATIDRIServer->regsSize,
		   DRM_REGISTERS, DRM_READ_ONLY,
		   &pATIDRIServer->regsHandle ) < 0 ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[drm] failed to map registers\n" );
      return FALSE;
   }
   xf86DrvMsg( pScreen->myNum, X_INFO,
	       "[drm] register handle = 0x%08x\n",
	       pATIDRIServer->regsHandle );

   return TRUE;
}

/* Initialize the kernel data structures. */
static Bool ATIDRIKernelInit( ScreenPtr pScreen )
{
   ScrnInfoPtr pScreenInfo = xf86Screens[pScreen->myNum];
   ATIPtr pATI = ATIPTR(pScreenInfo);
   ATIDRIServerInfoPtr pATIDRIServer = pATI->pDRIServerInfo;
   drmMach64Init info;

   memset( &info, 0, sizeof(drmMach64Init) );

   info.func 			= DRM_MACH64_INIT_DMA;
   info.sarea_priv_offset	= sizeof(XF86DRISAREARec);
   info.is_pci			= pATIDRIServer->IsPCI;
   info.dma_mode                = pATI->OptionDMAMode;

   info.fb_bpp			= pATI->bitsPerPixel;
   info.front_offset		= pATIDRIServer->frontOffset;
   info.front_pitch		= pATIDRIServer->frontPitch;
   info.back_offset		= pATIDRIServer->backOffset;
   info.back_pitch		= pATIDRIServer->backPitch;

   info.depth_bpp		= 16;
   info.depth_offset		= pATIDRIServer->depthOffset;
   info.depth_pitch		= pATIDRIServer->depthPitch;

   info.fb_offset		= pATI->LinearBase;
   info.mmio_offset		= pATIDRIServer->regsHandle;
   info.ring_offset		= pATIDRIServer->ringHandle;
   info.buffers_offset		= pATIDRIServer->bufferHandle;
   info.agp_textures_offset	= pATIDRIServer->agpTexHandle;

   if ( drmCommandWrite( pATI->drmFD, DRM_MACH64_INIT, 
			 &info, sizeof(drmMach64Init) ) < 0 ) {
      return FALSE;
   } else {
      return TRUE;
   }
}

/* Add a map for the DMA buffers that will be accessed by any
 * DRI-based clients.
 */
static Bool ATIDRIAddBuffers( ScreenPtr pScreen )
{
   ScrnInfoPtr pScreenInfo = xf86Screens[pScreen->myNum];
   ATIPtr pATI = ATIPTR(pScreenInfo);
   ATIDRIServerInfoPtr pATIDRIServer = pATI->pDRIServerInfo;

   /* Initialize vertex buffers */
   if ( pATIDRIServer->IsPCI ) {
      pATIDRIServer->numBuffers = drmAddBufs( pATI->drmFD,
					      (pATIDRIServer->bufferSize*1024*1024)/MACH64_BUFFER_SIZE,
					      MACH64_BUFFER_SIZE,
					      0,
					      0 );
   } else {
      pATIDRIServer->numBuffers = drmAddBufs( pATI->drmFD,
					      pATIDRIServer->bufferMapSize/MACH64_BUFFER_SIZE,
					      MACH64_BUFFER_SIZE,
					      DRM_AGP_BUFFER,
					      pATIDRIServer->bufferStart );
   }
   if ( pATIDRIServer->numBuffers <= 0 ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[drm] Could not create DMA buffers list\n" );
      return FALSE;
   }
   xf86DrvMsg( pScreen->myNum, X_INFO,
	       "[drm] Added %d %d byte DMA buffers\n",
	       pATIDRIServer->numBuffers, MACH64_BUFFER_SIZE );

    return TRUE;
}

static Bool ATIDRIMapBuffers( ScreenPtr pScreen )
{
   ScrnInfoPtr pScreenInfo = xf86Screens[pScreen->myNum];
   ATIPtr pATI = ATIPTR(pScreenInfo);
   ATIDRIServerInfoPtr pATIDRIServer = pATI->pDRIServerInfo;

   pATIDRIServer->drmBuffers = drmMapBufs( pATI->drmFD );
   if ( !pATIDRIServer->drmBuffers ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[drm] Failed to map DMA buffers list\n" );
      return FALSE;
   }
   xf86DrvMsg( pScreen->myNum, X_INFO,
	       "[drm] Mapped %d DMA buffers at 0x%08lx\n",
	       pATIDRIServer->drmBuffers->count,
	       (unsigned long)pATIDRIServer->drmBuffers->list->address );

   return TRUE;
}

static Bool ATIDRIIrqInit( ScreenPtr pScreen )
{
   ScrnInfoPtr pScreenInfo = xf86Screens[pScreen->myNum];
   ATIPtr pATI = ATIPTR(pScreenInfo);

   if ( pATI->irq <= 0 ) {
      pATI->irq = drmGetInterruptFromBusID(pATI->drmFD,
					   ((pciConfigPtr)pATI->PCIInfo
					    ->thisCard)->busnum,
					   ((pciConfigPtr)pATI->PCIInfo
					    ->thisCard)->devnum,
					   ((pciConfigPtr)pATI->PCIInfo
					    ->thisCard)->funcnum);
      if ( pATI->irq <= 0 ) {
	 xf86DrvMsg(pScreenInfo->scrnIndex, X_ERROR,
		    "[drm] Couldn't find IRQ for bus id %d:%d:%d\n",
		    ((pciConfigPtr)pATI->PCIInfo->thisCard)->busnum,
		    ((pciConfigPtr)pATI->PCIInfo->thisCard)->devnum,
		    ((pciConfigPtr)pATI->PCIInfo->thisCard)->funcnum);
	 pATI->irq = 0;
      } else if ((drmCtlInstHandler(pATI->drmFD, pATI->irq)) != 0) {
 	 xf86DrvMsg(pScreenInfo->scrnIndex, X_ERROR,
		    "[drm] Failed to initialize interrupt handler with IRQ %d\n",
		    pATI->irq);
	 pATI->irq = 0;
      }

      if (pATI->irq)
	 xf86DrvMsg(pScreenInfo->scrnIndex, X_INFO,
		    "[drm] Installed interrupt handler, using IRQ %d\n",
		    pATI->irq);
      else {
	 xf86DrvMsg(pScreenInfo->scrnIndex, X_INFO,
		    "[drm] Falling back to irq-free operation\n");
	 return FALSE;
      }
   }

   return TRUE;

}

/* Initialize the screen-specific data structures for the DRI and the
 * Rage Pro.  This is the main entry point to the device-specific
 * initialization code.  It calls device-independent DRI functions to
 * create the DRI data structures and initialize the DRI state.
 */
Bool ATIDRIScreenInit( ScreenPtr pScreen )
{
   ScrnInfoPtr pScreenInfo = xf86Screens[pScreen->myNum];
   ATIPtr pATI = ATIPTR(pScreenInfo);
   DRIInfoPtr pDRIInfo;
   ATIDRIPtr pATIDRI;
   ATIDRIServerInfoPtr pATIDRIServer;
   drmVersionPtr version;
   int major, minor, patch;

   /* Check that the GLX, DRI, and DRM modules have been loaded by testing
    * for known symbols in each module.
    */
   if ( !xf86LoaderCheckSymbol("GlxSetVisualConfigs") ) return FALSE;
   if ( !xf86LoaderCheckSymbol("drmAvailable") ) return FALSE;
   if ( !xf86LoaderCheckSymbol("DRIQueryVersion") ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[dri] ATIDRIScreenInit failed (libdri.a too old)\n" );
      return FALSE;
   }

   /* Check the DRI version */
   DRIQueryVersion( &major, &minor, &patch );
   if ( major != DRIINFO_MAJOR_VERSION || minor < DRIINFO_MINOR_VERSION ) {
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[dri] ATIDRIScreenInit failed because of a version mismatch.\n"
		  "[dri] libdri version is %d.%d.%d but version %d.%d.x is needed.\n"
		  "[dri] Disabling the DRI.\n",
		  major, minor, patch,
                  DRIINFO_MAJOR_VERSION, DRIINFO_MINOR_VERSION );
      return FALSE;
   }

   switch ( pATI->bitsPerPixel ) {
   case 8:
      /* These modes are not supported (yet). */
   case 15:
   case 24:
      xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[dri] Direct rendering only supported in 16 and 32 bpp modes\n");
      return FALSE;

      /* Only 16 and 32 color depths are supported currently. */
   case 16:
      if ( pATI->depth != 16) {
	 xf86DrvMsg( pScreen->myNum, X_ERROR,
		  "[dri] Direct rendering not supported for depth %d at fbbpp 16.\n", pATI->depth );
	 return FALSE;
      }
      break;
   case 32:
      break;
   }

   /* Create the DRI data structure, and fill it in before calling the
    * DRIScreenInit().
    */
   pDRIInfo = DRICreateInfoRec();
   if ( !pDRIInfo ) return FALSE;

   pATI->pDRIInfo = pDRIInfo;
   pDRIInfo->drmDriverName = ATIKernelDriverName;
   pDRIInfo->clientDriverName = ATIClientDriverName;
   if (xf86LoaderCheckSymbol("DRICreatePCIBusID")) {
      pDRIInfo->busIdString = DRICreatePCIBusID(pATI->PCIInfo);
   } else {
      pDRIInfo->busIdString = xalloc( 64 );
      sprintf( pDRIInfo->busIdString,
	       "PCI:%d:%d:%d",
	       pATI->PCIInfo->bus,
	       pATI->PCIInfo->device,
	       pATI->PCIInfo->func );
   }
   pDRIInfo->ddxDriverMajorVersion = ATI_VERSION_MAJOR;
   pDRIInfo->ddxDriverMinorVersion = ATI_VERSION_MINOR;
   pDRIInfo->ddxDriverPatchVersion = ATI_VERSION_PATCH;
   pDRIInfo->frameBufferPhysicalAddress = (void *)pATI->LinearBase;
   pDRIInfo->frameBufferSize = pATI->LinearSize;
   pDRIInfo->frameBufferStride = (pScreenInfo->displayWidth *
				  pATI->FBBytesPerPixel);
   pDRIInfo->ddxDrawableTableEntry = ATI_MAX_DRAWABLES;

   if ( SAREA_MAX_DRAWABLES < ATI_MAX_DRAWABLES ) {
      pDRIInfo->maxDrawableTableEntry = SAREA_MAX_DRAWABLES;