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

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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: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Xin Wang <x.wang@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Nitin Gote <nitin.r.gote@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Sanjay Yadav <sanjay.kumar.yadav@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20251110221458.1864507-2-x.wang@intel.com
This commit is contained in:
Xin Wang 2025-11-10 22:14:58 +00:00 committed by Matthew Auld
parent 6bcb180f6f
commit b2bce0e551
2 changed files with 16 additions and 0 deletions
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6
drivers/gpu/drm/xe/xe_pat.c
View File

@ -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)
{

10
drivers/gpu/drm/xe/xe_pat.h
View File

@ -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