queue-6.18/drm-xe-increase-tdf-timeout.patch

From c670d925c7b831dcf7293bb72068e0b170fe3afc Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Fri, 12 Dec 2025 05:21:46 +0800
Subject: drm/xe: Increase TDF timeout
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From: Jagmeet Randhawa <jagmeet.randhawa@intel.com>

[ Upstream commit eafb6f62093f756535a7be1fc4559374a511e460 ]

There are some corner cases where flushing transient
data may take slightly longer than the 150us timeout
we currently allow.  Update the driver to use a 300us
timeout instead based on the latest guidance from
the hardware team. An update to the bspec to formally
document this is expected to arrive soon.

Fixes: c01c6066e6fa ("drm/xe/device: implement transient flush")
Signed-off-by: Jagmeet Randhawa <jagmeet.randhawa@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patch.msgid.link/0201b1d6ec64d3651fcbff1ea21026efa915126a.1765487866.git.jagmeet.randhawa@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit d69d3636f5f7a84bae7cd43473b3701ad9b7d544)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/xe/xe_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index 456899238377..5f757790d6f5 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -1046,7 +1046,7 @@ static void tdf_request_sync(struct xe_device *xe)
 		 * transient and need to be flushed..
 		 */
 		if (xe_mmio_wait32(&gt->mmio, XE2_TDF_CTRL, TRANSIENT_FLUSH_REQUEST, 0,
-				   150, NULL, false))
+				   300, NULL, false))
 			xe_gt_err_once(gt, "TD flush timeout\n");
 
 		xe_force_wake_put(gt_to_fw(gt), fw_ref);
-- 
2.51.0