path: root/src/mesa/drivers/dri/r128/r128_screen.c

/**************************************************************************

Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
                                               Cedar Park, Texas.
All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
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the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice (including the next
paragraph) shall be included in all copies or substantial portions of the
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
ATI, PRECISION INSIGHT AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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USE OR OTHER DEALINGS IN THE SOFTWARE.

**************************************************************************/

/*
 * Authors:
 *   Gareth Hughes <gareth@valinux.com>
 *   Kevin E. Martin <martin@valinux.com>
 *
 */

#include "r128_dri.h"

#include "r128_context.h"
#include "r128_ioctl.h"
#include "r128_span.h"
#include "r128_tris.h"

#include "context.h"
#include "imports.h"
#include "framebuffer.h"
#include "renderbuffer.h"

#include "utils.h"
#include "vblank.h"

#include "GL/internal/dri_interface.h"

/* R128 configuration
 */
#include "xmlpool.h"

PUBLIC const char __driConfigOptions[] =
DRI_CONF_BEGIN
    DRI_CONF_SECTION_PERFORMANCE
        DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
    DRI_CONF_SECTION_END
    DRI_CONF_SECTION_QUALITY
        DRI_CONF_TEXTURE_DEPTH(DRI_CONF_TEXTURE_DEPTH_FB)
    DRI_CONF_SECTION_END
    DRI_CONF_SECTION_DEBUG
        DRI_CONF_NO_RAST(false)
#if ENABLE_PERF_BOXES
        DRI_CONF_PERFORMANCE_BOXES(false)
#endif
    DRI_CONF_SECTION_END
DRI_CONF_END;
#if ENABLE_PERF_BOXES
static const GLuint __driNConfigOptions = 4;
#else
static const GLuint __driNConfigOptions = 3;
#endif

extern const struct dri_extension card_extensions[];

#if 1
/* Including xf86PciInfo.h introduces a bunch of errors...
 */
#define PCI_CHIP_RAGE128LE	0x4C45
#define PCI_CHIP_RAGE128LF	0x4C46
#define PCI_CHIP_RAGE128PF	0x5046
#define PCI_CHIP_RAGE128PR	0x5052
#define PCI_CHIP_RAGE128RE	0x5245
#define PCI_CHIP_RAGE128RF	0x5246
#define PCI_CHIP_RAGE128RK	0x524B
#define PCI_CHIP_RAGE128RL	0x524C
#endif


/* Create the device specific screen private data struct.
 */
static r128ScreenPtr
r128CreateScreen( __DRIscreenPrivate *sPriv )
{
   r128ScreenPtr r128Screen;
   R128DRIPtr r128DRIPriv = (R128DRIPtr)sPriv->pDevPriv;
   int i;

   if (sPriv->devPrivSize != sizeof(R128DRIRec)) {
      fprintf(stderr,"\nERROR!  sizeof(R128DRIRec) does not match passed size from device driver\n");
      return GL_FALSE;
   }

   /* Allocate the private area */
   r128Screen = (r128ScreenPtr) CALLOC( sizeof(*r128Screen) );
   if ( !r128Screen ) return NULL;

   /* parse information in __driConfigOptions */
   driParseOptionInfo (&r128Screen->optionCache,
		       __driConfigOptions, __driNConfigOptions);

   /* This is first since which regions we map depends on whether or
    * not we are using a PCI card.
    */
   r128Screen->IsPCI = r128DRIPriv->IsPCI;
   r128Screen->sarea_priv_offset = r128DRIPriv->sarea_priv_offset;
   
   if (sPriv->drm_version.minor >= 3) {
      drm_r128_getparam_t gp;
      int ret;

      gp.param = R128_PARAM_IRQ_NR;
      gp.value = &r128Screen->irq;

      ret = drmCommandWriteRead( sPriv->fd, DRM_R128_GETPARAM,
				    &gp, sizeof(gp));
      if (ret) {
         fprintf(stderr, "drmR128GetParam (R128_PARAM_IRQ_NR): %d\n", ret);
         FREE( r128Screen );
         return NULL;
      }
   }

   r128Screen->mmio.handle = r128DRIPriv->registerHandle;
   r128Screen->mmio.size   = r128DRIPriv->registerSize;
   if ( drmMap( sPriv->fd,
		r128Screen->mmio.handle,
		r128Screen->mmio.size,
		(drmAddressPtr)&r128Screen->mmio.map ) ) {
      FREE( r128Screen );
      return NULL;
   }

   r128Screen->buffers = drmMapBufs( sPriv->fd );
   if ( !r128Screen->buffers ) {
      drmUnmap( (drmAddress)r128Screen->mmio.map, r128Screen->mmio.size );
      FREE( r128Screen );
      return NULL;
   }

   if ( !r128Screen->IsPCI ) {
      r128Screen->agpTextures.handle = r128DRIPriv->agpTexHandle;
      r128Screen->agpTextures.size   = r128DRIPriv->agpTexMapSize;
      if ( drmMap( sPriv->fd,
		   r128Screen->agpTextures.handle,
		   r128Screen->agpTextures.size,
		   (drmAddressPtr)&r128Screen->agpTextures.map ) ) {
	 drmUnmapBufs( r128Screen->buffers );
	 drmUnmap( (drmAddress)r128Screen->mmio.map, r128Screen->mmio.size );
	 FREE( r128Screen );
	 return NULL;
      }
   }

   switch ( r128DRIPriv->deviceID ) {
   case PCI_CHIP_RAGE128RE:
   case PCI_CHIP_RAGE128RF:
   case PCI_CHIP_RAGE128RK:
   case PCI_CHIP_RAGE128RL:
      r128Screen->chipset = R128_CARD_TYPE_R128;
      break;
   case PCI_CHIP_RAGE128PF:
      r128Screen->chipset = R128_CARD_TYPE_R128_PRO;
      break;
   case PCI_CHIP_RAGE128LE:
   case PCI_CHIP_RAGE128LF:
      r128Screen->chipset = R128_CARD_TYPE_R128_MOBILITY;
      break;
   default:
      r128Screen->chipset = R128_CARD_TYPE_R128;
      break;
   }

   r128Screen->cpp = r128DRIPriv->bpp / 8;
   r128Screen->AGPMode = r128DRIPriv->AGPMode;

   r128Screen->frontOffset	= r128DRIPriv->frontOffset;
   r128Screen->frontPitch	= r128DRIPriv->frontPitch;
   r128Screen->backOffset	= r128DRIPriv->backOffset;
   r128Screen->backPitch	= r128DRIPriv->backPitch;
   r128Screen->depthOffset	= r128DRIPriv->depthOffset;
   r128Screen->depthPitch	= r128DRIPriv->depthPitch;
   r128Screen->spanOffset	= r128DRIPriv->spanOffset;

   if ( r128DRIPriv->textureSize == 0 ) {
      r128Screen->texOffset[R128_LOCAL_TEX_HEAP] =
	 r128DRIPriv->agpTexOffset + R128_AGP_TEX_OFFSET;
      r128Screen->texSize[R128_LOCAL_TEX_HEAP] = r128DRIPriv->agpTexMapSize;
      r128Screen->logTexGranularity[R128_LOCAL_TEX_HEAP] =
	 r128DRIPriv->log2AGPTexGran;
   } else {
      r128Screen->texOffset[R128_LOCAL_TEX_HEAP] = r128DRIPriv->textureOffset;
      r128Screen->texSize[R128_LOCAL_TEX_HEAP] = r128DRIPriv->textureSize;
      r128Screen->logTexGranularity[R128_LOCAL_TEX_HEAP] = r128DRIPriv->log2TexGran;
   }

   if ( !r128Screen->agpTextures.map || r128DRIPriv->textureSize == 0 ) {
      r128Screen->numTexHeaps = R128_NR_TEX_HEAPS - 1;
      r128Screen->texOffset[R128_AGP_TEX_HEAP] = 0;
      r128Screen->texSize[R128_AGP_TEX_HEAP] = 0;
      r128Screen->logTexGranularity[R128_AGP_TEX_HEAP] = 0;
   } else {
      r128Screen->numTexHeaps = R128_NR_TEX_HEAPS;
      r128Screen->texOffset[R128_AGP_TEX_HEAP] =
	 r128DRIPriv->agpTexOffset + R128_AGP_TEX_OFFSET;
      r128Screen->texSize[R128_AGP_TEX_HEAP] = r128DRIPriv->agpTexMapSize;
      r128Screen->logTexGranularity[R128_AGP_TEX_HEAP] =
	 r128DRIPriv->log2AGPTexGran;
   }

   r128Screen->driScreen = sPriv;

   i = 0;
   r128Screen->extensions[i++] = &driFrameTrackingExtension.base;
   if ( r128Screen->irq != 0 ) {
       r128Screen->extensions[i++] = &driSwapControlExtension.base;
       r128Screen->extensions[i++] = &driMediaStreamCounterExtension.base;
   }
   r128Screen->extensions[i++] = NULL;
   sPriv->extensions = r128Screen->extensions;

   return r128Screen;
}

/* Destroy the device specific screen private data struct.
 */
static void
r128DestroyScreen( __DRIscreenPrivate *sPriv )
{
   r128ScreenPtr r128Screen = (r128ScreenPtr)sPriv->private;

   if ( !r128Screen )
      return;

   if ( !r128Screen->IsPCI ) {
      drmUnmap( (drmAddress)r128Screen->agpTextures.map,
		r128Screen->agpTextures.size );
   }
   drmUnmapBufs( r128Screen->buffers );
   drmUnmap( (drmAddress)r128Screen->mmio.map, r128Screen->mmio.size );

   /* free all option information */
   driDestroyOptionInfo (&r128Screen->optionCache);

   FREE( r128Screen );
   sPriv->private = NULL;
}


/* Create and initialize the Mesa and driver specific pixmap buffer
 * data.
 */
static GLboolean
r128CreateBuffer( __DRIscreenPrivate *driScrnPriv,
                  __DRIdrawablePrivate *driDrawPriv,
                  const __GLcontextModes *mesaVis,
                  GLboolean isPixmap )
{
   r128ScreenPtr screen = (r128ScreenPtr) driScrnPriv->private;

   if (isPixmap) {
      return GL_FALSE; /* not implemented */
   }
   else {
      const GLboolean swDepth = GL_FALSE;
      const GLboolean swAlpha = GL_FALSE;
      const GLboolean swAccum = mesaVis->accumRedBits > 0;
      const GLboolean swStencil = mesaVis->stencilBits > 0 &&
         mesaVis->depthBits != 24;
      struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);

      {
         driRenderbuffer *frontRb
            = driNewRenderbuffer(GL_RGBA,
                                 NULL,
                                 screen->cpp,
                                 screen->frontOffset, screen->frontPitch,
                                 driDrawPriv);
         r128SetSpanFunctions(frontRb, mesaVis);
         _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
      }

      if (mesaVis->doubleBufferMode) {
         driRenderbuffer *backRb
            = driNewRenderbuffer(GL_RGBA,
                                 NULL,
                                 screen->cpp,
                                 screen->backOffset, screen->backPitch,
                                 driDrawPriv);
         r128SetSpanFunctions(backRb, mesaVis);
         _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
      }

      if (mesaVis->depthBits == 16) {
         driRenderbuffer *depthRb
            = driNewRenderbuffer(GL_DEPTH_COMPONENT16,
                                 NULL,
                                 screen->cpp,
                                 screen->depthOffset, screen->depthPitch,
                                 driDrawPriv);
         r128SetSpanFunctions(depthRb, mesaVis);
         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
      }
      else if (mesaVis->depthBits == 24) {
         driRenderbuffer *depthRb
            = driNewRenderbuffer(GL_DEPTH_COMPONENT24,
                                 NULL,
                                 screen->cpp,
                                 screen->depthOffset, screen->depthPitch,
                                 driDrawPriv);
         r128SetSpanFunctions(depthRb, mesaVis);
         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
      }

      if (mesaVis->stencilBits > 0 && !swStencil) {
         driRenderbuffer *stencilRb
            = driNewRenderbuffer(GL_STENCIL_INDEX8_EXT,
                                 NULL,
                                 screen->cpp,
                                 screen->depthOffset, screen->depthPitch,
                                 driDrawPriv);
         r128SetSpanFunctions(stencilRb, mesaVis);
         _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
      }

      _mesa_add_soft_renderbuffers(fb,
                                   GL_FALSE, /* color */
                                   swDepth,
                                   swStencil,
                                   swAccum,
                                   swAlpha,
                                   GL_FALSE /* aux */);
      driDrawPriv->driverPrivate = (void *) fb;

      return (driDrawPriv->driverPrivate != NULL);
   }
}


static void
r128DestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
{
   _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
}


/* Copy the back color buffer to the front color buffer */
static void
r128SwapBuffers(__DRIdrawablePrivate *dPriv)
{
   if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
      r128ContextPtr rmesa;
      GLcontext *ctx;
      rmesa = (r128ContextPtr) dPriv->driContextPriv->driverPrivate;
      ctx = rmesa->glCtx;
      if (ctx->Visual.doubleBufferMode) {
         _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
         if ( rmesa->doPageFlip ) {
            r128PageFlip( dPriv );
         }
         else {
            r128CopyBuffer( dPriv );
         }
      }
   }
   else {
      /* XXX this shouldn't be an error but we can't handle it for now */
      _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
   }
}


/* Initialize the driver specific screen private data.
 */
static GLboolean
r128InitDriver( __DRIscreenPrivate *sPriv )
{
   sPriv->private = (void *) r128CreateScreen( sPriv );

   if ( !sPriv->private ) {
      r128DestroyScreen( sPriv );
      return GL_FALSE;
   }

   return GL_TRUE;
}

static const __DRIconfig **
r128FillInModes( __DRIscreenPrivate *psp,
		 unsigned pixel_bits, unsigned depth_bits,
		 unsigned stencil_bits, GLboolean have_back_buffer )
{
    __DRIconfig **configs;
    __GLcontextModes * m;
    unsigned depth_buffer_factor;
    unsigned back_buffer_factor;
    GLenum fb_format;
    GLenum fb_type;
    int i;

    /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
     * enough to add support.  Basically, if a context is created with an
     * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
     * will never be used.
     */
    static const GLenum back_buffer_modes[] = {
	GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
    };

    uint8_t depth_bits_array[2];
    uint8_t stencil_bits_array[2];


    depth_bits_array[0] = depth_bits;
    depth_bits_array[1] = depth_bits;
    
    /* Just like with the accumulation buffer, always provide some modes
     * with a stencil buffer.  It will be a sw fallback, but some apps won't
     * care about that.
     */
    stencil_bits_array[0] = 0;
    stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;

    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
    back_buffer_factor  = (have_back_buffer) ? 2 : 1;

    if ( pixel_bits == 16 ) {
        fb_format = GL_RGB;
        fb_type = GL_UNSIGNED_SHORT_5_6_5;
    }
    else {
        fb_format = GL_BGR;
        fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
    }

   configs = driCreateConfigs(fb_format, fb_type,
			      depth_bits_array, stencil_bits_array,
			      depth_buffer_factor, back_buffer_modes,
			      back_buffer_factor);
   if (configs == NULL) {
    fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
              __LINE__);
      return NULL;
   }

   /* Mark the visual as slow if there are "fake" stencil bits.
    */
   for (i = 0; configs[i]; i++) {
      m = &configs[i]->modes;
      if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
         m->visualRating = GLX_SLOW_CONFIG;
      }
   }

   return (const __DRIconfig **) configs;
}


/**
 * This is the driver specific part of the createNewScreen entry point.
 * 
 * \todo maybe fold this into intelInitDriver
 *
 * \return the __GLcontextModes supported by this driver
 */
static const __DRIconfig **
r128InitScreen(__DRIscreenPrivate *psp)
{
   static const __DRIversion ddx_expected = { 4, 0, 0 };
   static const __DRIversion dri_expected = { 4, 0, 0 };
   static const __DRIversion drm_expected = { 2, 2, 0 };
   R128DRIPtr dri_priv = (R128DRIPtr) psp->pDevPriv;

   if ( ! driCheckDriDdxDrmVersions2( "Rage128",
				      &psp->dri_version, & dri_expected,
				      &psp->ddx_version, & ddx_expected,
				      &psp->drm_version, & drm_expected ) )
      return NULL;

   /* Calling driInitExtensions here, with a NULL context pointer,
    * does not actually enable the extensions.  It just makes sure
    * that all the dispatch offsets for all the extensions that
    * *might* be enables are known.  This is needed because the
    * dispatch offsets need to be known when _mesa_context_create is
    * called, but we can't enable the extensions until we have a
    * context pointer.
    *
    * Hello chicken.  Hello egg.  How are you two today?
    */
   driInitExtensions( NULL, card_extensions, GL_FALSE );

   if (!r128InitDriver(psp))
       return NULL;

   return r128FillInModes( psp,
			   dri_priv->bpp,
			   (dri_priv->bpp == 16) ? 16 : 24,
			   (dri_priv->bpp == 16) ? 0  : 8,
			   (dri_priv->backOffset != dri_priv->depthOffset) );
}

const struct __DriverAPIRec driDriverAPI = {
   .InitScreen      = r128InitScreen,
   .DestroyScreen   = r128DestroyScreen,
   .CreateContext   = r128CreateContext,
   .DestroyContext  = r128DestroyContext,
   .CreateBuffer    = r128CreateBuffer,
   .DestroyBuffer   = r128DestroyBuffer,
   .SwapBuffers     = r128SwapBuffers,
   .MakeCurrent     = r128MakeCurrent,
   .UnbindContext   = r128UnbindContext,
   .GetSwapInfo     = NULL,
   .GetDrawableMSC  = driDrawableGetMSC32,
   .WaitForMSC      = driWaitForMSC32,
   .WaitForSBC      = NULL,
   .SwapBuffersMSC  = NULL
};