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Commit e1479132 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915/selftests: Magic numbers for old Y-tiling 



i915g has a slightly different tiling layout, and so requires a
different reference swizzle pattern.

Testcase: igt/drv_selftests/live_objects #gdg
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Acked-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180707100405.817-1-chris@chris-wilson.co.uk
parent 890fd185

drivers/gpu/drm/i915/selftests/i915_gem_object.c

+9 −2
Original line number Diff line number Diff line
@@ -169,9 +169,16 @@ static u64 tiled_offset(const struct tile *tile, u64 v) 
		v += y * tile->width;

		v += div64_u64_rem(x, tile->width, &x) << tile->size;

		v += x;

	} else {

	} else if (tile->width == 128) {

		const unsigned int ytile_span = 16;

		const unsigned int ytile_height = 32 * ytile_span;

		const unsigned int ytile_height = 512;



		v += y * ytile_span;

		v += div64_u64_rem(x, ytile_span, &x) * ytile_height;

		v += x;

	} else {

		const unsigned int ytile_span = 32;

		const unsigned int ytile_height = 256;



		v += y * ytile_span;

		v += div64_u64_rem(x, ytile_span, &x) * ytile_height;