linux-kernel - [PATCH 2/7] drm/msm: Add submitqueue setup and close

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Message-Id: <20240815-preemption-a750-t-v1-2-7bda26c34037@gmail.com>
Date: Thu, 15 Aug 2024 20:26:12 +0200
From: Antonino Maniscalco <antomani103@...il.com>
To: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Antonino Maniscalco <antomani103@...il.com>, 
 Sharat Masetty <smasetty@...eaurora.org>
Subject: [PATCH 2/7] drm/msm: Add submitqueue setup and close

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@...eaurora.org>
---
 drivers/gpu/drm/msm/msm_gpu.h         |  7 +++++++
 drivers/gpu/drm/msm/msm_submitqueue.c | 10 ++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 1f02bb9956be..70f5c18e5aee 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -92,6 +92,10 @@ struct msm_gpu_funcs {
 	 * for cmdstream that is buffered in this FIFO upstream of the CP fw.
 	 */
 	bool (*progress)(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
+	int (*submitqueue_setup)(struct msm_gpu *gpu,
+			struct msm_gpu_submitqueue *queue);
+	void (*submitqueue_close)(struct msm_gpu *gpu,
+			struct msm_gpu_submitqueue *queue);
 };
 
 /* Additional state for iommu faults: */
@@ -522,6 +526,9 @@ struct msm_gpu_submitqueue {
 	struct mutex lock;
 	struct kref ref;
 	struct drm_sched_entity *entity;
+	struct msm_gpu *gpu;
+	struct drm_gem_object *bo;
+	uint64_t bo_iova;
 };
 
 struct msm_gpu_state_bo {
diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c
index 0e803125a325..4ffb336d9a60 100644
--- a/drivers/gpu/drm/msm/msm_submitqueue.c
+++ b/drivers/gpu/drm/msm/msm_submitqueue.c
@@ -71,6 +71,11 @@ 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);
+
 	idr_destroy(&queue->fence_idr);
 
 	msm_file_private_put(queue->ctx);
@@ -160,6 +165,7 @@ 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;
 	enum drm_sched_priority sched_prio;
 	unsigned ring_nr;
 	int ret;
@@ -195,6 +201,7 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 
 	queue->ctx = msm_file_private_get(ctx);
 	queue->id = ctx->queueid++;
+	queue->gpu = gpu;
 
 	if (id)
 		*id = queue->id;
@@ -207,6 +214,9 @@ 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;
 }
 

-- 
2.46.0