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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: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180707100405.817-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-07-07 11:04:05 +01:00
parent 890fd185d5
commit e147913247
1 changed files with 9 additions and 2 deletions
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11
drivers/gpu/drm/i915/selftests/i915_gem_object.c
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@ -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;