[PATCH 1/4] drm/msm: Add submitqueue setup and close

[Sharat Masetty]

This patch adds a bit of infrastructure to give the different Adreno
targets the flexibility to setup the submitqueues per their needs.

Signed-off-by: Sharat Masetty <smasetty at codeaurora.org>
---
 drivers/gpu/drm/msm/msm_gpu.h         |  7 +++++++
 drivers/gpu/drm/msm/msm_submitqueue.c | 15 +++++++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index b824117..b9b86ef 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -69,6 +69,10 @@ struct msm_gpu_funcs {
 	int (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor);
 #endif
 	int (*gpu_busy)(struct msm_gpu *gpu, uint64_t *value);
+	int (*submitqueue_setup)(struct msm_gpu *gpu,
+			struct msm_gpu_submitqueue *queue);
+	void (*submitqueue_close)(struct msm_gpu *gpu,
+			struct msm_gpu_submitqueue *queue);
 };
 
 struct msm_gpu {
@@ -173,6 +177,9 @@ struct msm_gpu_submitqueue {
 	int faults;
 	struct list_head node;
 	struct kref ref;
+	struct msm_gpu *gpu;
+	struct drm_gem_object *bo;
+	uint64_t bo_iova;
 };
 
 static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data)
diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c
index 5115f75..1e696da 100644
--- a/drivers/gpu/drm/msm/msm_submitqueue.c
+++ b/drivers/gpu/drm/msm/msm_submitqueue.c
@@ -18,6 +18,10 @@ void msm_submitqueue_destroy(struct kref *kref)
 {
 	struct msm_gpu_submitqueue *queue = container_of(kref,
 		struct msm_gpu_submitqueue, ref);
+	struct msm_gpu *gpu = queue->gpu;
+
+	if (gpu && gpu->funcs->submitqueue_close)
+		gpu->funcs->submitqueue_close(gpu, queue);
 
 	kfree(queue);
 }
@@ -65,6 +69,7 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 {
 	struct msm_drm_private *priv = drm->dev_private;
 	struct msm_gpu_submitqueue *queue;
+	struct msm_gpu *gpu = priv->gpu;
 
 	if (!ctx)
 		return -ENODEV;
@@ -77,11 +82,14 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 	kref_init(&queue->ref);
 	queue->flags = flags;
 
-	if (priv->gpu) {
-		if (prio >= priv->gpu->nr_rings)
+	if (gpu) {
+		if (prio >= gpu->nr_rings) {
+			kfree(queue);
 			return -EINVAL;
+		}
 
 		queue->prio = prio;
+		queue->gpu = gpu;
 	}
 
 	write_lock(&ctx->queuelock);
@@ -95,6 +103,9 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 
 	write_unlock(&ctx->queuelock);
 
+	if (gpu && gpu->funcs->submitqueue_setup)
+		gpu->funcs->submitqueue_setup(gpu, queue);
+
 	return 0;
 }
 
-- 
1.9.1