Merge "drm/msm: Add submit queue queries"

5 files changed, 73 insertions, 6 deletions

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index a12da5b745f4..cc3e56733fb9 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1711,6 +1711,16 @@ static int msm_ioctl_submitqueue_new(struct drm_device *dev, void *data,
 		args->flags, &args->id);
 }
 
+static int msm_ioctl_submitqueue_query(struct drm_device *dev, void *data,
+		struct drm_file *file)
+{
+	struct drm_msm_submitqueue_query *args = data;
+	void __user *ptr = (void __user *)(uintptr_t) args->data;
+
+	return msm_submitqueue_query(file->driver_priv, args->id,
+		args->param, ptr, args->len);
+}
+
 static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data,
 		struct drm_file *file)
 {
@@ -1768,6 +1778,8 @@ static const struct drm_ioctl_desc msm_ioctls[] = {
 			  DRM_AUTH|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close,
 			  DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query,
+			  DRM_AUTH|DRM_RENDER_ALLOW),
 };
 
 static const struct vm_operations_struct vm_ops = {
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 660c608b64f0..adc1e021b6f7 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -516,8 +516,11 @@ struct msm_gpu_submitqueue *msm_submitqueue_get(struct msm_file_private *ctx,
 		u32 id);
 int msm_submitqueue_create(struct msm_file_private *ctx, u32 prio,
 		u32 flags, u32 *id);
+int msm_submitqueue_query(struct msm_file_private *ctx, u32 id, u32 param,
+		void __user *data, u32 len);
 int msm_submitqueue_remove(struct msm_file_private *ctx, u32 id);
 void msm_submitqueue_close(struct msm_file_private *ctx);
+
 void msm_submitqueue_destroy(struct kref *kref);
 
 struct hdmi;
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 45d7a658f022..cb90d23e8b07 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -274,6 +274,20 @@ static void inactive_start(struct msm_gpu *gpu)
 			round_jiffies_up(jiffies + DRM_MSM_INACTIVE_JIFFIES));
 }
 
+static void retire_guilty_submit(struct msm_gpu *gpu,
+		struct msm_ringbuffer *ring)
+{
+	struct msm_gem_submit *submit = list_first_entry_or_null(&ring->submits,
+		struct msm_gem_submit, node);
+
+	if (!submit)
+		return;
+
+	submit->queue->faults++;
+
+	msm_gem_submit_free(submit);
+}
+
 /*
  * Hangcheck detection for locked gpu:
  */
@@ -296,13 +310,12 @@ static void recover_worker(struct work_struct *work)
 
 		inactive_cancel(gpu);
 
-		FOR_EACH_RING(gpu, ring, i) {
-			uint32_t fence = gpu->funcs->last_fence(gpu, ring);
-
+		/* Retire all events that have already passed */
+		FOR_EACH_RING(gpu, ring, i)
 			retire_submits(gpu, ring,
-				gpu->funcs->active_ring(gpu) == ring ?
-					fence + 1 : fence);
-		}
+				gpu->funcs->last_fence(gpu, ring));
+
+		retire_guilty_submit(gpu, gpu->funcs->active_ring(gpu));
 
 		/* Recover the GPU */
 		gpu->funcs->recover(gpu);
diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c
index 8e29021bb0d8..4f2af876db49 100644
--- a/drivers/gpu/drm/msm/msm_submitqueue.c
+++ b/drivers/gpu/drm/msm/msm_submitqueue.c
@@ -27,6 +27,9 @@ struct msm_gpu_submitqueue *msm_submitqueue_get(struct msm_file_private *ctx,
 {
 	struct msm_gpu_submitqueue *entry;
 
+	if (!ctx)
+		return NULL;
+
 	read_lock(&ctx->queuelock);
 
 	list_for_each_entry(entry, &ctx->submitqueues, node) {
@@ -95,6 +98,29 @@ int msm_submitqueue_init(struct msm_file_private *ctx)
 	return msm_submitqueue_create(ctx, 3, 0, NULL);
 }
 
+int msm_submitqueue_query(struct msm_file_private *ctx, u32 id, u32 param,
+		void __user *data, u32 len)
+{
+	struct msm_gpu_submitqueue *queue = msm_submitqueue_get(ctx, id);
+	int ret = 0;
+
+	if (!queue)
+		return -ENOENT;
+
+	if (param == MSM_SUBMITQUEUE_PARAM_FAULTS) {
+		u32 size = min_t(u32, len, sizeof(queue->faults));
+
+		if (copy_to_user(data, &queue->faults, size))
+			ret = -EFAULT;
+	} else {
+		ret = -EINVAL;
+	}
+
+	msm_submitqueue_put(queue);
+
+	return ret;
+}
+
 int msm_submitqueue_remove(struct msm_file_private *ctx, u32 id)
 {
 	struct msm_gpu_submitqueue *entry;
diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h
index 831a0c81cddb..ce05a3974572 100644
--- a/include/uapi/drm/msm_drm.h
+++ b/include/uapi/drm/msm_drm.h
@@ -370,6 +370,15 @@ struct drm_msm_submitqueue {
 	__u32 id;      /* out, identifier */
 };
 
+#define MSM_SUBMITQUEUE_PARAM_FAULTS 0
+
+struct drm_msm_submitqueue_query {
+	__u64 data;
+	__u32 id;
+	__u32 param;
+	__u32 len;
+};
+
 #define DRM_MSM_GET_PARAM              0x00
 /* placeholder:
 #define DRM_MSM_SET_PARAM              0x01
@@ -384,6 +393,7 @@ struct drm_msm_submitqueue {
 #define DRM_MSM_GEM_SVM_NEW            0x09
 #define DRM_MSM_SUBMITQUEUE_NEW        0x0A
 #define DRM_MSM_SUBMITQUEUE_CLOSE      0x0B
+#define DRM_MSM_SUBMITQUEUE_QUERY      0x0C
 
 #define DRM_SDE_WB_CONFIG              0x40
 #define DRM_MSM_REGISTER_EVENT         0x41
@@ -432,6 +442,9 @@ struct drm_msm_submitqueue {
 #define DRM_IOCTL_MSM_SUBMITQUEUE_CLOSE \
 	DRM_IOW(DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_CLOSE, \
 		struct drm_msm_submitqueue)
+#define DRM_IOCTL_MSM_SUBMITQUEUE_QUERY \
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_QUERY, \
+		struct drm_msm_submitqueue_query)
 
 #if defined(__cplusplus)
 }