Open source GPL/LGPL release

drivers/gpu/nvgpu/common/vgpu/ivc/comm_vgpu.c

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <nvgpu/types.h>
+#include <nvgpu/utils.h>
+#include <nvgpu/bug.h>
+#include <nvgpu/string.h>
+#include <nvgpu/vgpu/vgpu_ivc.h>
+#include <nvgpu/vgpu/tegra_vgpu.h>
+
+#include "comm_vgpu.h"
+
+int vgpu_comm_init(struct gk20a *g)
+{
+	size_t queue_sizes[] = { TEGRA_VGPU_QUEUE_SIZES };
+
+	return vgpu_ivc_init(g, 3, queue_sizes, TEGRA_VGPU_QUEUE_CMD,
+			ARRAY_SIZE(queue_sizes));
+}
+
+void vgpu_comm_deinit(void)
+{
+	size_t queue_sizes[] = { TEGRA_VGPU_QUEUE_SIZES };
+
+	vgpu_ivc_deinit(TEGRA_VGPU_QUEUE_CMD, ARRAY_SIZE(queue_sizes));
+}
+
+int vgpu_comm_sendrecv(struct tegra_vgpu_cmd_msg *msg, size_t size_in,
+		size_t size_out)
+{
+	void *handle;
+	size_t size = size_in;
+	void *data = msg;
+	int err;
+
+	err = vgpu_ivc_sendrecv(vgpu_ivc_get_server_vmid(),
+				TEGRA_VGPU_QUEUE_CMD, &handle, &data, &size);
+	if (err == 0) {
+		WARN_ON(size < size_out);
+		nvgpu_memcpy((u8 *)msg, (u8 *)data, size_out);
+		vgpu_ivc_release(handle);
+	}
+
+	return err;
+}

drivers/gpu/nvgpu/common/vgpu/ivc/comm_vgpu.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef COMM_VGPU_H
+#define COMM_VGPU_H
+
+struct gk20a;
+struct tegra_vgpu_cmd_msg;
+
+int vgpu_comm_init(struct gk20a *g);
+void vgpu_comm_deinit(void);
+int vgpu_comm_sendrecv(struct tegra_vgpu_cmd_msg *msg, size_t size_in,
+		size_t size_out);
+
+#endif