linux-kernel - [PATCH AUTOSEL 6.14 612/642] drm/xe: Always setup GT MMIO adjustment data

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Message-Id: <20250505221419.2672473-612-sashal@kernel.org>
Date: Mon,  5 May 2025 18:13:48 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Michal Wajdeczko <michal.wajdeczko@...el.com>,
	Matt Roper <matthew.d.roper@...el.com>,
	Lucas De Marchi <lucas.demarchi@...el.com>,
	Sasha Levin <sashal@...nel.org>,
	thomas.hellstrom@...ux.intel.com,
	rodrigo.vivi@...el.com,
	airlied@...il.com,
	simona@...ll.ch,
	intel-xe@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.14 612/642] drm/xe: Always setup GT MMIO adjustment data

From: Michal Wajdeczko <michal.wajdeczko@...el.com>

[ Upstream commit bbd8429264baf8bc3c40cefda048560ae0eb7890 ]

While we believed that xe_gt_mmio_init() will be called just once
per GT, this might not be a case due to some tweaks that need to
performed by the VF driver during early probe.  To avoid leaving
any stale data in case of the re-run, reset the GT MMIO adjustment
data for the non-media GT case.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@...el.com>
Cc: Matt Roper <matthew.d.roper@...el.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241114175955.2299-2-michal.wajdeczko@intel.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/xe/xe_gt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
index 94eed1315b0f1..a749de08982b8 100644
--- a/drivers/gpu/drm/xe/xe_gt.c
+++ b/drivers/gpu/drm/xe/xe_gt.c
@@ -650,6 +650,9 @@ void xe_gt_mmio_init(struct xe_gt *gt)
 	if (gt->info.type == XE_GT_TYPE_MEDIA) {
 		gt->mmio.adj_offset = MEDIA_GT_GSI_OFFSET;
 		gt->mmio.adj_limit = MEDIA_GT_GSI_LENGTH;
+	} else {
+		gt->mmio.adj_offset = 0;
+		gt->mmio.adj_limit = 0;
 	}
 
 	if (IS_SRIOV_VF(gt_to_xe(gt)))
-- 
2.39.5