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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-05 10:14:22 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-05 10:54:42 +0100 |
| commit | deeb1519b65a92ca06c8e8554a92df0fdb4d5dea (patch) | |
| tree | 8a8a464b76cc6000dbfb79cdf5fe3b3e53e0c401 /drivers/gpu/drm/i915/i915_gem_tiling.c | |
| parent | drm/i915: Remove locking for get_tiling (diff) | |
| download | linux-dev-deeb1519b65a92ca06c8e8554a92df0fdb4d5dea.tar.xz linux-dev-deeb1519b65a92ca06c8e8554a92df0fdb4d5dea.zip | |
drm/i915: Document and reject invalid tiling modes
Through the GTT interface to the fence registers, we can only handle
linear, X and Y tiling. The more esoteric tiling patterns are ignored.
Document that the tiling ABI only supports upto Y tiling, and reject any
attempts to set a tiling mode other than NONE, X or Y.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470388464-28458-17-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_tiling.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_tiling.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index c0e01333bddf..6817f69947d9 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -68,6 +68,9 @@ i915_tiling_ok(struct drm_device *dev, int stride, int size, int tiling_mode) if (tiling_mode == I915_TILING_NONE) return true; + if (tiling_mode > I915_TILING_LAST) + return false; + if (IS_GEN2(dev) || (tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev))) tile_width = 128; |