drm/i915/bdw: Check for slice, subslice and EU count for BDW
Added checks for available slices, subslices and EUs for Broadwell. This information is filled in intel_device_info and is available to user with GET_PARAM. Added checks for enabled slices, subslices and EU for Broadwell. This information is based on available counts but takes power gated slices into account. It can be read in debugfs. Introduce new register defines that contain information on slices on Broadwell. v2: - Introduce GT_SLICE_INFO register - Change Broadwell sseu_device_status function to use GT_SLICE_INFO register instead of RPCS register - Undo removal of dev_priv variables in Cherryview and Gen9 sseu_device_satus functions v3: - Fix style issues v4: - Corrected comment - Reverted reordering of defines Cc: Jeff Mcgee <jeff.mcgee@intel.com> Cc: Arun Siluvery <arun.siluvery@linux.intel.com> Signed-off-by: NŁukasz Daniluk <lukasz.daniluk@intel.com> Reviewed-by: NJeff McGee <jeff.mcgee@intel.com> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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