Commit b2bce0e5 authored by Xin Wang's avatar Xin Wang Committed by Matthew Auld
Browse files

drm/xe/pat: Add helper to query compression enable status 



Add xe_pat_index_get_comp_en() helper function to check whether
compression is enabled for a given PAT index by extracting the
XE2_COMP_EN bit from the PAT table entry.

There are no current users, however there are multiple in-flight series
which will all use this helper.

CC: Nitin Gote <nitin.r.gote@intel.com>
CC: Sanjay Yadav <sanjay.kumar.yadav@intel.com>
CC: Matt Roper <matthew.d.roper@intel.com>
Suggested-by: default avatarMatthew Auld <matthew.auld@intel.com>
Signed-off-by: default avatarXin Wang <x.wang@intel.com>
Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Reviewed-by: default avatarNitin Gote <nitin.r.gote@intel.com>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Reviewed-by: default avatarSanjay Yadav <sanjay.kumar.yadav@intel.com>
Signed-off-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20251110221458.1864507-2-x.wang@intel.com
parent 6bcb180f

drivers/gpu/drm/xe/xe_pat.c

+6 −0
Original line number Diff line number Diff line
@@ -196,6 +196,12 @@ u16 xe_pat_index_get_coh_mode(struct xe_device *xe, u16 pat_index) 
	return xe->pat.table[pat_index].coh_mode;

}



bool xe_pat_index_get_comp_en(struct xe_device *xe, u16 pat_index)

{

	WARN_ON(pat_index >= xe->pat.n_entries);

	return !!(xe->pat.table[pat_index].value & XE2_COMP_EN);

}



static void program_pat(struct xe_gt *gt, const struct xe_pat_table_entry table[],

			int n_entries)

{

drivers/gpu/drm/xe/xe_pat.h

+10 −0
Original line number Diff line number Diff line
@@ -58,4 +58,14 @@ int xe_pat_dump(struct xe_gt *gt, struct drm_printer *p); 
 */

u16 xe_pat_index_get_coh_mode(struct xe_device *xe, u16 pat_index);



/**

 * xe_pat_index_get_comp_en - Extract the compression enable flag for

 * the given pat_index.

 * @xe: xe device

 * @pat_index: The pat_index to query

 *

 * Return: true if compression is enabled for this pat_index, false otherwise.

 */

bool xe_pat_index_get_comp_en(struct xe_device *xe, u16 pat_index);



#endif