diff mbox series

[v2,3/8] drm/panfrost: Handle job HW submit errors

Message ID 20241128211223.1805830-4-adrian.larumbe@collabora.com (mailing list archive)
State New
Headers show
Series Some Panfrost fixes and improvements | expand

Commit Message

Adrián Larumbe Nov. 28, 2024, 9:06 p.m. UTC 
Avoid waiting for the DRM scheduler job timedout handler, and instead, let
the DRM scheduler core signal the error fence immediately when HW job
submission fails.

That means we must also decrement the runtime-PM refcnt for the device,
because the job will never be enqueued or inflight.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
---
 drivers/gpu/drm/panfrost/panfrost_job.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index f640d211cc3a..3f4f0682d69d 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -195,7 +195,7 @@  panfrost_enqueue_job(struct panfrost_device *pfdev, int slot,
 	return 1;
 }
 
-static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
+static int panfrost_job_hw_submit(struct panfrost_job *job, int js)
 {
 	struct panfrost_device *pfdev = job->pfdev;
 	unsigned int subslot;
@@ -207,10 +207,11 @@  static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
 
 	ret = pm_runtime_get_sync(pfdev->base.dev);
 	if (ret < 0)
-		return;
+		goto err_hwsubmit;
 
 	if (WARN_ON(job_read(pfdev, JS_COMMAND_NEXT(js)))) {
-		return;
+		ret = -EINVAL;
+		goto err_hwsubmit;
 	}
 
 	cfg = panfrost_mmu_as_get(pfdev, job->mmu);
@@ -261,6 +262,12 @@  static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
 			job, js, subslot, jc_head, cfg & 0xf);
 	}
 	spin_unlock(&pfdev->js->job_lock);
+
+	return 0;
+
+err_hwsubmit:
+	pm_runtime_put_autosuspend(pfdev->base.dev);
+	return ret;
 }
 
 static int panfrost_acquire_object_fences(struct drm_gem_object **bos,
@@ -382,6 +389,7 @@  static struct dma_fence *panfrost_job_run(struct drm_sched_job *sched_job)
 	struct panfrost_device *pfdev = job->pfdev;
 	int slot = panfrost_job_get_slot(job);
 	struct dma_fence *fence = NULL;
+	int ret;
 
 	if (unlikely(job->base.s_fence->finished.error))
 		return NULL;
@@ -400,7 +408,11 @@  static struct dma_fence *panfrost_job_run(struct drm_sched_job *sched_job)
 		dma_fence_put(job->done_fence);
 	job->done_fence = dma_fence_get(fence);
 
-	panfrost_job_hw_submit(job, slot);
+	ret = panfrost_job_hw_submit(job, slot);
+	if (ret) {
+		dma_fence_put(job->done_fence);
+		return ERR_PTR(ret);
+	}
 
 	return fence;
 }