video: tegra: host: pva: Initial Ioctl

Added the ioctl header with structure defined in
ISS file. Added the code support ioctl for
reading the pva characteristics.

JIRA PVA-48

Change-Id: Ie19972c6e8586da27ecc89d285a169567e5bd8fe
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/1152518
Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
Tested-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 75 insertions, 0 deletions

diff --git a/include/uapi/linux/nvhost_pva_ioctl.h b/include/uapi/linux/nvhost_pva_ioctl.h
new file mode 100644
index 000000000..b431445a4
--- /dev/null
+++ b/include/uapi/linux/nvhost_pva_ioctl.h
@@ -0,0 +1,75 @@
+/*
+ * Tegra PVA Driver ioctls
+ *
+ * Copyright (c) 2016, 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 __LINUX_NVHOST_PVA_IOCTL_H
+#define __LINUX_NVHOST_PVA_IOCTL_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#if !defined(__KERNEL__)
+#define __user
+#endif
+
+#define NVHOST_PVA_IOCTL_MAGIC 'P'
+
+/**
+ * struct pva_characteristics_req - Request filling of characteristics struct
+ *
+ * @characteristics: pointer to be filled with characteristics
+ * @characteristics_size: size in bytes
+ * @characteristics_filled: reserved(set to zero)
+ *
+ */
+struct pva_characteristics_req {
+        __u64 characteristics;
+        __u64 characteristics_size;
+        __u64 characteristics_filled;
+};
+
+/**
+ * struct pva_characteristics - the information of the pva cluster
+ *
+ * @num_vpu: number of vpu per pva
+ * @vpu_generation: vpu hardware generation
+ * @task_structure_version: highest supported task struct ver
+ * @reserved: reserved for future use
+ * @r5_ucode_version: R5 firmware version
+ * @r5_ucode_earliest: 1st version compatible with current running fw
+ * @r5_vpu_runtime_earliest: First supported vpu runtime version
+ *
+ */
+struct pva_characteristics {
+        __u8 num_vpu;
+        __u8 vpu_generation;
+        __u8 reserved[6];
+        __u32 r5_ucode_version;
+        __u32 r5_ucode_earliest;
+        __u32 r5_vpu_runtime_earliest;
+};
+
+
+#define PVA_IOCTL_CHARACTERISTICS       \
+        _IOWR(NVHOST_PVA_IOCTL_MAGIC, 1, struct pva_characteristics_req)
+
+
+#define NVHOST_PVA_IOCTL_LAST _IOC_NR(PVA_IOCTL_CHARACTERISTICS)
+#define NVHOST_PVA_IOCTL_MAX_ARG_SIZE sizeof(struct pva_characteristics_req)
+
+#endif /* __LINUX_NVHOST_PVA_IOCTL_H */
+