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drm/radeon: AGP memory is only I/O if the aperture can be mapped by the CPU.
Fixes AGP initialization failure with Apple UniNorth bridges due to trying to ioremap() normal RAM. Signed-off-by: Michel Dänzer <daenzer@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -451,7 +451,7 @@ static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_
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/* RADEON_IS_AGP is set only if AGP is active */
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mem->bus.offset = mem->mm_node->start << PAGE_SHIFT;
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mem->bus.base = rdev->mc.agp_base;
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mem->bus.is_iomem = true;
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mem->bus.is_iomem = !rdev->ddev->agp->cant_use_aperture;
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}
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#endif
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break;
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