ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/gpu/drm/msm/msm_ringbuffer.c b/marvell/linux/drivers/gpu/drm/msm/msm_ringbuffer.c
new file mode 100644
index 0000000..39ecb5a
--- /dev/null
+++ b/marvell/linux/drivers/gpu/drm/msm/msm_ringbuffer.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ */
+
+#include "msm_ringbuffer.h"
+#include "msm_gpu.h"
+
+struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id,
+ void *memptrs, uint64_t memptrs_iova)
+{
+ struct msm_ringbuffer *ring;
+ char name[32];
+ int ret;
+
+ /* We assume everwhere that MSM_GPU_RINGBUFFER_SZ is a power of 2 */
+ BUILD_BUG_ON(!is_power_of_2(MSM_GPU_RINGBUFFER_SZ));
+
+ ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+ if (!ring) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ ring->gpu = gpu;
+ ring->id = id;
+
+ ring->start = msm_gem_kernel_new(gpu->dev, MSM_GPU_RINGBUFFER_SZ,
+ MSM_BO_WC | MSM_BO_GPU_READONLY, gpu->aspace, &ring->bo,
+ &ring->iova);
+
+ if (IS_ERR(ring->start)) {
+ ret = PTR_ERR(ring->start);
+ ring->start = 0;
+ goto fail;
+ }
+
+ msm_gem_object_set_name(ring->bo, "ring%d", id);
+
+ ring->end = ring->start + (MSM_GPU_RINGBUFFER_SZ >> 2);
+ ring->next = ring->start;
+ ring->cur = ring->start;
+
+ ring->memptrs = memptrs;
+ ring->memptrs_iova = memptrs_iova;
+
+ INIT_LIST_HEAD(&ring->submits);
+ spin_lock_init(&ring->lock);
+
+ snprintf(name, sizeof(name), "gpu-ring-%d", ring->id);
+
+ ring->fctx = msm_fence_context_alloc(gpu->dev, name);
+
+ return ring;
+
+fail:
+ msm_ringbuffer_destroy(ring);
+ return ERR_PTR(ret);
+}
+
+void msm_ringbuffer_destroy(struct msm_ringbuffer *ring)
+{
+ if (IS_ERR_OR_NULL(ring))
+ return;
+
+ msm_fence_context_free(ring->fctx);
+
+ msm_gem_kernel_put(ring->bo, ring->gpu->aspace, false);
+
+ kfree(ring);
+}