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Commit e2b665c4 authored by Adam Jackson's avatar Adam Jackson Committed by Daniel Vetter
Browse files

drm/i915: Pull MTRR setup to its own function 



No functional change here, just clarifying code flow.

Signed-off-by: default avatarAdam Jackson <ajax@redhat.com>
Reviewed-by: default avatarKenneth Graunke <kenneth@whitecape.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent fa37d39e

drivers/gpu/drm/i915/i915_dma.c

+17 −12
Original line number Diff line number Diff line
@@ -1914,6 +1914,22 @@ ips_ping_for_i915_load(void) 
	}

}



static void

i915_mtrr_setup(struct drm_i915_private *dev_priv, unsigned long base,

		unsigned long size)

{

	/* Set up a WC MTRR for non-PAT systems.  This is more common than

	 * one would think, because the kernel disables PAT on first

	 * generation Core chips because WC PAT gets overridden by a UC

	 * MTRR if present.  Even if a UC MTRR isn't present.

	 */

	dev_priv->mm.gtt_mtrr = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1);

	if (dev_priv->mm.gtt_mtrr < 0) {

		DRM_INFO("MTRR allocation failed.  Graphics "

			 "performance may suffer.\n");

	}

}



/**

 * i915_driver_load - setup chip and create an initial config

 * @dev: DRM device
@@ -1992,18 +2008,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) 
		goto out_rmmap;

	}



	/* Set up a WC MTRR for non-PAT systems.  This is more common than

	 * one would think, because the kernel disables PAT on first

	 * generation Core chips because WC PAT gets overridden by a UC

	 * MTRR if present.  Even if a UC MTRR isn't present.

	 */

	dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,

					 agp_size,

					 MTRR_TYPE_WRCOMB, 1);

	if (dev_priv->mm.gtt_mtrr < 0) {

		DRM_INFO("MTRR allocation failed.  Graphics "

			 "performance may suffer.\n");

	}

	i915_mtrr_setup(dev_priv, dev->agp->base, agp_size);



	/* The i915 workqueue is primarily used for batched retirement of

	 * requests (and thus managing bo) once the task has been completed