tegra: ivc: add ivc mempool kernel driver

This check-in adds an ivc mempool companion driver
required by the userspace ivc library. The driver
implements mempool support services that cannot be
implemented inside lower-privileged userspace code, e.g.
mapping ivc mempool memory to user-space.

Jira VFND-2036

Change-Id: Ic85dbced933095b8de4ac0cb86b09e311e3b2a2e
Signed-off-by: John Moser <jmoser@nvidia.com>
Reviewed-on: http://git-master/r/1221653
Reviewed-on: http://git-master/r/1245385
(cherry picked from commit 774439a50ac9d3c48e832b252b8e3b1f47a9acb1)
Reviewed-on: http://git-master/r/1489074
Tested-by: Haley Teng <hteng@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/include/linux/nvhvivc_mempool_ioctl.h b/include/linux/nvhvivc_mempool_ioctl.h
new file mode 100644
index 000000000..4853b8863
--- /dev/null
+++ b/include/linux/nvhvivc_mempool_ioctl.h
@@ -0,0 +1,30 @@
+/*
+ * nvhvivc_mempool_ioctl.h
+ *
+ * Declarations for Tegra Hypervisor ivc mempool driver ioctls
+ *
+ * Copyright (c) 2016 NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ *
+ */
+#ifndef __NVHVIVC_MEMPOOL_IOCTL_H__
+#define __NVHVIVC_MEMPOOL_IOCTL_H__
+
+#include <linux/ioctl.h>
+
+/* ivc mempool IOCTL magic number */
+#define TEGRA_MPLUSERSPACE_IOCTL_MAGIC 0xA6
+
+
+/* IOCTL definitions */
+
+/* query ivc mempool configuration data */
+#define TEGRA_MPLUSERSPACE_IOCTL_GET_INFO \
+        _IOR(TEGRA_MPLUSERSPACE_IOCTL_MAGIC, 1, struct ivc_mempool)
+
+#define TEGRA_MPLUSERSPACE_IOCTL_NUMBER_MAX 1
+
+#endif /* __NVHVIVC_MEMPOOL_IOCTL_H__ */