Exemple #1
0
static int
i915_query_renderer_integer(__DRIscreen *psp, int param, unsigned int *value)
{
   const struct intel_screen *const intelScreen =
      (struct intel_screen *) psp->driverPrivate;

   switch (param) {
   case __DRI2_RENDERER_VENDOR_ID:
      value[0] = 0x8086;
      return 0;
   case __DRI2_RENDERER_DEVICE_ID:
      value[0] = intelScreen->deviceID;
      return 0;
   case __DRI2_RENDERER_ACCELERATED:
      value[0] = 1;
      return 0;
   case __DRI2_RENDERER_VIDEO_MEMORY: {
      /* Once a batch uses more than 75% of the maximum mappable size, we
       * assume that there's some fragmentation, and we start doing extra
       * flushing, etc.  That's the big cliff apps will care about.
       */
      size_t aper_size;
      size_t mappable_size;

      drm_intel_get_aperture_sizes(psp->fd, &mappable_size, &aper_size);

      const unsigned gpu_mappable_megabytes =
         (aper_size / (1024 * 1024)) * 3 / 4;

      const long system_memory_pages = sysconf(_SC_PHYS_PAGES);
      const long system_page_size = sysconf(_SC_PAGE_SIZE);

      if (system_memory_pages <= 0 || system_page_size <= 0)
         return -1;

      const uint64_t system_memory_bytes = (uint64_t) system_memory_pages
         * (uint64_t) system_page_size;

      const unsigned system_memory_megabytes =
         (unsigned) (system_memory_bytes / 1024);

      value[0] = MIN2(system_memory_megabytes, gpu_mappable_megabytes);
      return 0;
   }
   case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
      value[0] = 1;
      return 0;
   case __DRI2_RENDERER_PREFERRED_PROFILE:
      value[0] = (1U << __DRI_API_OPENGL);
      return 0;
   default:
      return driQueryRendererIntegerCommon(psp, param, value);
   }

   return -1;
}
Exemple #2
0
static bool
probe_winsys(struct intel_winsys *winsys)
{
   struct intel_winsys_info *info = &winsys->info;
   int val;

   /*
    * When we need the Nth vertex from a user vertex buffer, and the vertex is
    * uploaded to, say, the beginning of a bo, we want the first vertex in the
    * bo to be fetched.  One way to do this is to set the base address of the
    * vertex buffer to
    *
    *   bo->offset64 + (vb->buffer_offset - vb->stride * N).
    *
    * The second term may be negative, and we need kernel support to do that.
    *
    * This check is taken from the classic driver.  u_vbuf_upload_buffers()
    * guarantees the term is never negative, but it is good to require a
    * recent kernel.
    */
   get_param(winsys, I915_PARAM_HAS_RELAXED_DELTA, &val);
   if (!val) {
      debug_error("kernel 2.6.39 required");
      return false;
   }

   info->devid = drm_intel_bufmgr_gem_get_devid(winsys->bufmgr);

   if (drm_intel_get_aperture_sizes(winsys->fd,
         &info->aperture_mappable, &info->aperture_total)) {
      debug_error("failed to query aperture sizes");
      return false;
   }

   get_param(winsys, I915_PARAM_HAS_LLC, &val);
   info->has_llc = val;
   info->has_address_swizzling = test_address_swizzling(winsys);

   winsys->first_gem_ctx = drm_intel_gem_context_create(winsys->bufmgr);
   info->has_logical_context = (winsys->first_gem_ctx != NULL);

   get_param(winsys, I915_PARAM_HAS_ALIASING_PPGTT, &val);
   info->has_ppgtt = val;

   /* test TIMESTAMP read */
   info->has_timestamp = test_reg_read(winsys, 0x2358);

   get_param(winsys, I915_PARAM_HAS_GEN7_SOL_RESET, &val);
   info->has_gen7_sol_reset = val;

   return true;
}