This is a note to let you know that I've just added the patch titled
drm/xe/display: Make display suspend/resume work on discrete
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-xe-display-make-display-suspend-resume-work-on-d.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 22fcfc713e2d8dda5ed50360e33049487f3b5451
Author: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Date: Tue Aug 6 12:50:44 2024 +0200
drm/xe/display: Make display suspend/resume work on discrete
[ Upstream commit ddf6492e0e508b7c2b42c8d5a4ac82bd38ef0dd5 ]
We should unpin before evicting all memory, and repin after GT resume.
This way, we preserve the contents of the framebuffers, and won't hang
on resume due to migration engine not being restored yet.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@xxxxxxxxxxxxxxx # v6.8+
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240806105044.596842-3-maarten.lankhorst@xxxxxxxxxxxxxxx
Signed-off-by: Maarten Lankhorst,,, <maarten.lankhorst@xxxxxxxxxxxxxxx>
(cherry picked from commit cb8f81c1753187995b7a43e79c12959f14eb32d3)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
index 79d33d592093c..96835ffa5734e 100644
--- a/drivers/gpu/drm/xe/display/xe_display.c
+++ b/drivers/gpu/drm/xe/display/xe_display.c
@@ -302,6 +302,27 @@ static bool suspend_to_idle(void)
return false;
}
+static void xe_display_flush_cleanup_work(struct xe_device *xe)
+{
+ struct intel_crtc *crtc;
+
+ for_each_intel_crtc(&xe->drm, crtc) {
+ struct drm_crtc_commit *commit;
+
+ spin_lock(&crtc->base.commit_lock);
+ commit = list_first_entry_or_null(&crtc->base.commit_list,
+ struct drm_crtc_commit, commit_entry);
+ if (commit)
+ drm_crtc_commit_get(commit);
+ spin_unlock(&crtc->base.commit_lock);
+
+ if (commit) {
+ wait_for_completion(&commit->cleanup_done);
+ drm_crtc_commit_put(commit);
+ }
+ }
+}
+
void xe_display_pm_suspend(struct xe_device *xe, bool runtime)
{
bool s2idle = suspend_to_idle();
@@ -319,6 +340,8 @@ void xe_display_pm_suspend(struct xe_device *xe, bool runtime)
if (!runtime)
intel_display_driver_suspend(xe);
+ xe_display_flush_cleanup_work(xe);
+
intel_dp_mst_suspend(xe);
intel_hpd_cancel_work(xe);
diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c
index 07615acd2c299..cf80679ceb701 100644
--- a/drivers/gpu/drm/xe/xe_pm.c
+++ b/drivers/gpu/drm/xe/xe_pm.c
@@ -91,13 +91,13 @@ int xe_pm_suspend(struct xe_device *xe)
for_each_gt(gt, xe, id)
xe_gt_suspend_prepare(gt);
+ xe_display_pm_suspend(xe, false);
+
/* FIXME: Super racey... */
err = xe_bo_evict_all(xe);
if (err)
goto err;
- xe_display_pm_suspend(xe, false);
-
for_each_gt(gt, xe, id) {
err = xe_gt_suspend(gt);
if (err) {
@@ -151,11 +151,11 @@ int xe_pm_resume(struct xe_device *xe)
xe_irq_resume(xe);
- xe_display_pm_resume(xe, false);
-
for_each_gt(gt, xe, id)
xe_gt_resume(gt);
+ xe_display_pm_resume(xe, false);
+
err = xe_bo_restore_user(xe);
if (err)
goto err;
@@ -363,10 +363,11 @@ int xe_pm_runtime_suspend(struct xe_device *xe)
mutex_unlock(&xe->mem_access.vram_userfault.lock);
if (xe->d3cold.allowed) {
+ xe_display_pm_suspend(xe, true);
+
err = xe_bo_evict_all(xe);
if (err)
goto out;
- xe_display_pm_suspend(xe, true);
}
for_each_gt(gt, xe, id) {
