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drivers: misc: Add nvsciipc kernel module

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This patch adds nvsciipc kernel driver. At present its only use is to
support NvSciIpc secure buffer sharing use case across processes.

JIRA ESLC-4105

Change-Id: Ib2889d7c0c7a3928ad1e84c8dd58f3aa287c6185
Signed-off-by: Abhijit <abhijit@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2146877
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Sandeep Trasi <strasi@nvidia.com>
Reviewed-by: Puneet Saxena <puneets@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Abhijit
2019-07-02 17:52:39 +05:30
committed by Laxman Dewangan
parent 96d1f511c7
commit 51ef39c2ab
3 changed files with 364 additions and 0 deletions
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76
include/uapi/linux/nvsciipc_ioctl.h Normal file
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/*
* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
*
* This header is BSD licensed so anyone can use the definitions to implement
* compatible drivers/servers.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of NVIDIA CORPORATION nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __NVSCIIPC_IOCTL_H__
#define __NVSCIIPC_IOCTL_H__
#include <linux/ioctl.h>
#define NVSCIIPC_MAX_EP_NAME 32
struct nvsciipc_config_entry {
/* endpoint name */
char ep_name[NVSCIIPC_MAX_EP_NAME];
/* node name for shm/sem */
char dev_name[NVSCIIPC_MAX_EP_NAME];
uint32_t backend; /* backend type */
uint32_t nframes; /* frame count */
uint32_t frame_size; /* frame size */
/* ep id for inter-Proc/Thread
* queue id for inter-VM
* dev id for inter-Chip
*/
uint32_t id;
uint64_t vuid; /* VM-wide unique id */
};
struct nvsciipc_db {
int num_eps;
struct nvsciipc_config_entry **entry;
};
struct nvsciipc_get_vuid {
char ep_name[NVSCIIPC_MAX_EP_NAME];
uint64_t vuid;
};
/* IOCTL magic number - seen available in ioctl-number.txt*/
#define NVSCIIPC_IOCTL_MAGIC 0xC3
#define NVSCIIPC_IOCTL_SET_DB \
_IOW(NVSCIIPC_IOCTL_MAGIC, 1, struct nvsciipc_db)
#define NVSCIIPC_IOCTL_GET_VUID \
_IOWR(NVSCIIPC_IOCTL_MAGIC, 2, struct nvsciipc_get_vuid)
#define NVSCIIPC_IOCTL_NUMBER_MAX 2
#endif /* __NVSCIIPC_IOCTL_H__ */