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| author | Mark Brown <broonie@kernel.org> | 2015-08-27 20:30:46 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-08-27 20:30:46 +0100 |
| commit | 2002e90412df17ef7f714be62ed96a3c80b2f907 (patch) | |
| tree | 3dd03684f7436320ec64f9c702b5d057a25dca17 /drivers/gpu/drm/i915/i915_gem_tiling.c | |
| parent | 02a9547e9b3f10d73fde66f52fc8b2a375a300cd (diff) | |
| parent | 3b7ce99748f0d006f9d1aa85709872e7b46787f7 (diff) | |
| download | kernel_replicant_linux-2002e90412df17ef7f714be62ed96a3c80b2f907.tar.gz kernel_replicant_linux-2002e90412df17ef7f714be62ed96a3c80b2f907.tar.bz2 kernel_replicant_linux-2002e90412df17ef7f714be62ed96a3c80b2f907.zip | |
Merge branch 'topic/ics43432' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-gtm601
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_tiling.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_tiling.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index 633bd1fcab69..d61e74a08f82 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -183,8 +183,18 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev) if (IS_GEN4(dev)) { uint32_t ddc2 = I915_READ(DCC2); - if (!(ddc2 & DCC2_MODIFIED_ENHANCED_DISABLE)) + if (!(ddc2 & DCC2_MODIFIED_ENHANCED_DISABLE)) { + /* Since the swizzling may vary within an + * object, we have no idea what the swizzling + * is for any page in particular. Thus we + * cannot migrate tiled pages using the GPU, + * nor can we tell userspace what the exact + * swizzling is for any object. + */ dev_priv->quirks |= QUIRK_PIN_SWIZZLED_PAGES; + swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN; + swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN; + } } if (dcc == 0xffffffff) { |