Unverified Commit 1182bc74 authored by Tvrtko Ursulin's avatar Tvrtko Ursulin Committed by Rodrigo Vivi
Browse files

drm/xe: Fix MOCS debugfs LNCF readout 



With only XE_FW_GT taken LNCF registers read back as all zeroes, leading
to a wild goose chase trying to figure out why is register programming
incorrect.

Fix it by grabbing XE_FORCEWAKE_ALL for affected platforms.

Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250307111402.26577-2-tvrtko.ursulin@igalia.com


Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
parent d945cc87

drivers/gpu/drm/xe/xe_mocs.c

+3 −1
Original line number Diff line number Diff line
@@ -781,7 +781,9 @@ void xe_mocs_dump(struct xe_gt *gt, struct drm_printer *p) 
	flags = get_mocs_settings(xe, &table);



	xe_pm_runtime_get_noresume(xe);

	fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT);

	fw_ref = xe_force_wake_get(gt_to_fw(gt),

				   flags & HAS_LNCF_MOCS ?

				   XE_FORCEWAKE_ALL : XE_FW_GT);

	if (!fw_ref)

		goto err_fw;