video: tegra: virt: add virt include file

This copies virtualization interface include file in kernel-next

[b99549f] <Aingara Paramakuru> video: tegra: virt: update comm framework
[e0c27a2] <Aingara Paramakuru> video: tegra: virt: add virtualization interfaces

Change-Id: Ie51931ff2fd5c80d430591bba057d123d10c8b7b
Signed-off-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-on: http://git-master/r/1127824
(cherry picked from commit 39df7d7844fba18e69a317628235570d9b8ed4a5)
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/1314848
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>

include/linux/tegra_gr_comm.h

@@ -0,0 +1,95 @@
+/*
+ * Tegra Graphics Virtualization Communication Framework
+ *
+ * Copyright (c) 2013-2014, NVIDIA Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __TEGRA_GR_COMM_H
+#define __TEGRA_GR_COMM_H
+
+#include <linux/platform_device.h>
+
+enum {
+	TEGRA_GR_COMM_CTX_CLIENT = 0,
+	TEGRA_GR_COMM_CTX_SERVER
+};
+
+#define TEGRA_GR_COMM_ID_SELF (0xFF)
+
+#ifdef CONFIG_TEGRA_GR_VIRTUALIZATION
+int tegra_gr_comm_init(struct platform_device *pdev, u32 virt_ctx, u32 elems,
+		const size_t *queue_sizes, u32 queue_start, u32 num_queues);
+void tegra_gr_comm_deinit(u32 virt_ctx, u32 queue_start, u32 num_queues);
+int tegra_gr_comm_send(u32 virt_ctx, u32 peer, u32 index, void *data,
+		size_t size);
+int tegra_gr_comm_recv(u32 virt_ctx, u32 index, void **handle, void **data,
+		size_t *size, u32 *sender);
+int tegra_gr_comm_sendrecv(u32 virt_ctx, u32 peer, u32 index, void **handle,
+			void **data, size_t *size);
+void tegra_gr_comm_release(void *handle);
+u32 tegra_gr_comm_get_server_vmid(void);
+void *tegra_gr_comm_oob_get_ptr(u32 virt_ctx, u32 peer, u32 index,
+				void **ptr, size_t *size);
+void tegra_gr_comm_oob_put_ptr(void *handle);
+#else
+static inline int tegra_gr_comm_init(struct platform_device *pdev,
+				u32 virt_ctx, u32 elems,
+				const size_t *queue_sizes, u32 queue_start,
+				u32 num_queues)
+{
+	return -ENOSYS;
+}
+
+static inline void tegra_gr_comm_deinit(u32 virt_ctx, u32 queue_start,
+					u32 num_queues)
+{
+}
+
+static inline int tegra_gr_comm_send(u32 virt_ctx, u32 peer, u32 index,
+				void *data, size_t size)
+{
+	return -ENOSYS;
+}
+
+static inline int tegra_gr_comm_recv(u32 virt_ctx, u32 index, void **handle,
+				void **data, size_t *size, u32 *sender)
+{
+	return -ENOSYS;
+}
+
+static inline int tegra_gr_comm_sendrecv(u32 virt_ctx, u32 peer, u32 index,
+					void **handle, void **data,
+					size_t *size)
+{
+	return -ENOSYS;
+}
+
+static inline void tegra_gr_comm_release(void *handle) {}
+
+static inline u32 tegra_gr_comm_get_server_vmid(void)
+{
+	return 0;
+}
+
+static inline void *tegra_gr_comm_oob_get_ptr(u32 virt_ctx, u32 peer,
+					u32 index, void **ptr, size_t *size)
+{
+	return NULL;
+}
+
+static inline void tegra_gr_comm_oob_put_ptr(void *handle) {}
+#endif
+
+#endif