Commit 0a3f3163 authored Jan 13, 2010 by Jerome Glisse Committed by Dave Airlie Jan 14, 2010

drm/radeon/kms: Disable AGP is aperture size < 32M



radeon KMS need a GART of at least 32M to properly work. This patch
check the AGP aperture size and disable if it's less than 32M. Note
than unlike non KMS path we don't staticaly allocate AGP memory so
we are not wasting memory not used by graphic processing.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

parent 30d2d9a5

drivers/gpu/drm/radeon/radeon_agp.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -133,6 +133,13 @@ int radeon_agp_init(struct radeon_device *rdev)
		bool is_v3;
		int ret;

		if (rdev->ddev->agp->agp_info.aper_size < 32) {
		dev_warn(rdev->dev, "AGP aperture to small (%dM) "
		"need at least 32M, disabling AGP\n",
		rdev->ddev->agp->agp_info.aper_size);
		return -EINVAL;
		}

		/* Acquire AGP. */
		if (!rdev->ddev->agp->acquired) {
		ret = drm_agp_acquire(rdev->ddev);