From 1e806a7a63c402bd83652c4c340b777f020f6682 Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@collabora.com>
Date: Wed, 30 Jun 2021 08:27:42 +0200
Subject: drm/panfrost: Expose a helper to trigger a GPU reset
Git-commit: 229f45788e22aa60b9317fe84c46ecdff9c08b01
Patch-mainline: v5.15-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Expose a helper to trigger a GPU reset so we can easily trigger reset
operations outside the job timeout handler.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210630062751.2832545-8-boris.brezillon@collabora.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/panfrost/panfrost_device.h | 8 ++++++++
drivers/gpu/drm/panfrost/panfrost_job.c | 4 +---
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index 3639288ee8a2..aec11b6f5abc 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -244,4 +244,12 @@ enum drm_panfrost_exception_type {
const char *panfrost_exception_name(u32 exception_code);
+static inline void
+panfrost_device_schedule_reset(struct panfrost_device *pfdev)
+{
+ /* Schedule a reset if there's no reset in progress. */
+ if (!atomic_xchg(&pfdev->reset.pending, 1))
+ schedule_work(&pfdev->reset.work);
+}
+
#endif
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index ea3432ffde40..12285a285765 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -447,9 +447,7 @@ static enum drm_gpu_sched_stat panfrost_job_timedout(struct drm_sched_job
if (!panfrost_scheduler_stop(&pfdev->js->queue[js], sched_job))
return DRM_GPU_SCHED_STAT_NOMINAL;
- /* Schedule a reset if there's no reset in progress. */
- if (!atomic_xchg(&pfdev->reset.pending, 1))
- schedule_work(&pfdev->reset.work);
+ panfrost_device_schedule_reset(pfdev);
return DRM_GPU_SCHED_STAT_NOMINAL;
}
--
2.38.1