411  * to them without having to worry about swizzling if the object is tiled.
517  * DOC: tiling swizzling details
548  * If we don't have interleaved memory, all tiling is safe and no swizzling is
557  * swizzling it needs to do is, since it's writing with the CPU to the pages
559  * pages (bit 6, 9, and 10 XORed in), resulting in a cumulative bit swizzling
565  * detect_bit_6_swizzle - detect bit 6 swizzling pattern
568  * Detects bit 6 swizzling of address lookup between IGD access and CPU
580 		 * On BDW+, swizzling is not used. We leave the CPU memory  in detect_bit_6_swizzle()
584 		 * VLV and CHV don't have GPU swizzling.  in detect_bit_6_swizzle()
606 			 * Enable swizzling when the channels are populated  in detect_bit_6_swizzle()
609 			 * ships in that configuration. Also, swizzling only  in detect_bit_6_swizzle()
623 		 * same swizzling setup.  in detect_bit_6_swizzle()
630 		 * swizzling issues.  in detect_bit_6_swizzle()
640 		 * swizzling for tiled objects from the CPU.  in detect_bit_6_swizzle()
643 		 *    slot fill         memory size  swizzling  in detect_bit_6_swizzle()
652 		 * matching, which was the case for the swizzling required in  in detect_bit_6_swizzle()
656 		 * Reports indicate that the swizzling actually  in detect_bit_6_swizzle()
673 		 * nor the GPU do swizzling.  For dual channel interleaved,  in detect_bit_6_swizzle()
688 				 * This is the base swizzling by the GPU for  in detect_bit_6_swizzle()
694 				/* Bit 11 swizzling by the CPU in addition. */  in detect_bit_6_swizzle()
698 				/* Bit 17 swizzling by the CPU in addition. */  in detect_bit_6_swizzle()
723 		 * Userspace likes to explode if it sees unknown swizzling,  in detect_bit_6_swizzle()
728 		 * As we don't strictly know what the swizzling is, it may be  in detect_bit_6_swizzle()
764  * i915_gem_object_do_bit_17_swizzle - fixup bit 17 swizzling
768  * This function fixes up the swizzling in case any page frame number for this
801  * i915_gem_object_save_bit_17_swizzle - save bit 17 swizzling
805  * This function saves the bit 17 of each page frame number so that swizzling