[RFC 29/34] drm/xe: Convert gt_reset from mem_access to xe_pm_runtime

[Rodrigo Vivi]

We need to ensure that device is in D0 on any kind of GT reset.
We are likely already protected by outer bounds like exec,
but if exec/sched ref gets dropped on a hang, we might transition
to D3 before we are able to perform the gt_reset and recover.

Suggested-by: Matthew Brost <matthew.brost at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/xe/xe_gt.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
index 9565ab9807bb..ad4cf0a8adaf 100644
--- a/drivers/gpu/drm/xe/xe_gt.c
+++ b/drivers/gpu/drm/xe/xe_gt.c
@@ -43,6 +43,7 @@
 #include "xe_migrate.h"
 #include "xe_mmio.h"
 #include "xe_pat.h"
+#include "xe_pm.h"
 #include "xe_mocs.h"
 #include "xe_reg_sr.h"
 #include "xe_ring_ops.h"
@@ -617,9 +618,9 @@ static int gt_reset(struct xe_gt *gt)
 		goto err_fail;
 	}
 
+	xe_pm_runtime_get(gt_to_xe(gt));
 	xe_gt_sanitize(gt);
 
-	xe_device_mem_access_get(gt_to_xe(gt));
 	err = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL);
 	if (err)
 		goto err_msg;
@@ -643,8 +644,8 @@ static int gt_reset(struct xe_gt *gt)
 		goto err_out;
 
 	err = xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL);
-	xe_device_mem_access_put(gt_to_xe(gt));
 	XE_WARN_ON(err);
+	xe_pm_runtime_put(gt_to_xe(gt));
 
 	xe_gt_info(gt, "reset done\n");
 
@@ -654,7 +655,7 @@ static int gt_reset(struct xe_gt *gt)
 	XE_WARN_ON(xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL));
 err_msg:
 	XE_WARN_ON(xe_uc_start(&gt->uc));
-	xe_device_mem_access_put(gt_to_xe(gt));
+	xe_pm_runtime_put(gt_to_xe(gt));
 err_fail:
 	xe_gt_err(gt, "reset failed (%pe)\n", ERR_PTR(err));
 
-- 
2.43.0