From: Tvrtko Ursulin Date: Fri, 7 Mar 2025 11:13:59 +0000 (+0000) Subject: drm/xe: Fix MOCS debugfs LNCF readout X-Git-Tag: block-6.15-20250403~41^2~4^2~3 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=298661cd9cea;p=linux-block.git 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: Tvrtko Ursulin Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20250307111402.26577-2-tvrtko.ursulin@igalia.com Signed-off-by: Rodrigo Vivi (cherry picked from commit 1182bc74b39ba3d124b544dab22d5672fae54b67) Signed-off-by: Lucas De Marchi --- diff --git a/drivers/gpu/drm/xe/xe_mocs.c b/drivers/gpu/drm/xe/xe_mocs.c index 54d199b5cfb2..31dade91a089 100644 --- a/drivers/gpu/drm/xe/xe_mocs.c +++ b/drivers/gpu/drm/xe/xe_mocs.c @@ -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;