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drm/xe/tests/mocs: Hold XE_FORCEWAKE_ALL for LNCF regs

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[ Upstream commit 51c0ee84e4dc339287b2d7335f2b54d747794c83 ]

LNCF registers report wrong values when XE_FORCEWAKE_GT
only is held. Holding XE_FORCEWAKE_ALL ensures correct
operations on LNCF regs.

V2(Himal):
 - Use xe_force_wake_ref_has_domain

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1999
Fixes: a6a4ea6d7d ("drm/xe: Add mocs kunit")
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250428082357.1730068-1-tejas.upadhyay@intel.com
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
(cherry picked from commit 70a2585e582058e94fe4381a337be42dec800337)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tejas Upadhyay
2025-04-28 13:53:57 +05:30
committed by Greg Kroah-Hartman
parent 95a75ed2b0
commit 944af45bb7
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/xe/tests/xe_mocs.c
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@@ -46,8 +46,11 @@ static void read_l3cc_table(struct xe_gt *gt,
unsigned int fw_ref, i;
u32 reg_val;
fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT);
KUNIT_ASSERT_NE_MSG(test, fw_ref, 0, "Forcewake Failed.\n");
fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL);
if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL)) {
xe_force_wake_put(gt_to_fw(gt), fw_ref);
KUNIT_ASSERT_TRUE_MSG(test, true, "Forcewake Failed.\n");
}
for (i = 0; i < info->num_mocs_regs; i++) {
if (!(i & 1)) {