diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2014-10-24 11:11:11 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-11-07 17:42:01 (GMT) |
| commit | 70f2f5c70440feff01d9ba7c8b4432eb72bd69eb (patch) | |
| tree | 5458fc2d3b963654130a4fc684daa036fefbceff /include/uapi | |
| parent | c826c4493851913e57dd47a7fbfe07156ac9f91d (diff) | |
| download | linux-70f2f5c70440feff01d9ba7c8b4432eb72bd69eb.tar.xz | |
drm/i915: Report the actual swizzling back to userspace
Userspace cares about whether or not swizzling depends on the page
address for its direct access into bound objects. Extend the get_tiling
ioctl to report the physical swizzling value in addition to the logical
swizzling value so that userspace can accurately determine when it is
possible for manual detiling.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Akash Goel <akash.goel@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Testcase: igt/gem_tiled_wc
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/drm/i915_drm.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index ff57f07..2ec0efc 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -876,6 +876,12 @@ struct drm_i915_gem_get_tiling { * mmap mapping. */ __u32 swizzle_mode; + + /** + * Returned address bit 6 swizzling required for CPU access through + * mmap mapping whilst bound. + */ + __u32 phys_swizzle_mode; }; struct drm_i915_gem_get_aperture { |