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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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220
include/linux/nvscierror.h Normal file
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/*
* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA Corporation and its licensors retain all intellectual property
* and proprietary rights in and to this software, related documentation
* and any modifications thereto. Any use, reproduction, disclosure or
* distribution of this software and related documentation without an express
* license agreement from NVIDIA Corporation is strictly prohibited.
*/
/*
* @file
*
* <b> NVIDIA Software Communications Interface (SCI): Error Handling </b>
*
* @b Description: This file declares error codes for NvSci APIs.
*/
#ifndef INCLUDED_NVSCI_ERROR_H
#define INCLUDED_NVSCI_ERROR_H
/**
* @defgroup NvSciError SCI Error Handling
*
* Contains error code enumeration and helper macros.
*
* @ingroup nvsci_top
* @{
*/
/**
* @brief Return/error codes for all NvSci functions.
*
* This enumeration contains unique return/error codes to identify the
* source of a failure. Some errors have direct correspondence to standard
* errno.h codes, indicated [IN BRACKETS], and may result from failures in
* lower level system calls. Others indicate failures specific to misuse
* of NvSci library function.
*/
typedef enum NvSciErrorRec {
/* Range 0x00000000 - 0x00FFFFFF : Common errors
* This range is used for errors common to all NvSci libraries.
*/
/** [EOK] No error */
NvSciError_Success = 0x00000000,
/** Unidentified error with no additional info */
NvSciError_Unknown = 0x00000001,
/* Generic errors */
/** [ENOSYS] Feature is not implemented */
NvSciError_NotImplemented = 0x00000010,
/** [ENOTSUP] Feature is not supported */
NvSciError_NotSupported = 0x00000011,
/** [EACCES] Access to resource denied */
NvSciError_AccessDenied = 0x00000020,
/** [EPERM] No permission to perform operation */
NvSciError_NotPermitted = 0x00000021,
/** Resource is in wrong state to perform operation */
NvSciError_InvalidState = 0x00000022,
/** Requested operation is not legal */
NvSciError_InvalidOperation = 0x00000023,
/** Required resource is not initialized */
NvSciError_NotInitialized = 0x00000024,
/** [ENOMEM] Not enough memory */
NvSciError_InsufficientMemory = 0x00000030,
/** Not enough (non-memory) resources */
NvSciError_InsufficientResource = 0x00000031,
/** Resource failed */
NvSciError_ResourceError = 0x00000032,
/* Function parameter errors */
/** [EINVAL] Invalid parameter value */
NvSciError_BadParameter = 0x00000100,
/** [EFAULT] Invalid address */
NvSciError_BadAddress = 0x00000101,
/** [E2BIG] Parameter list too long */
NvSciError_TooBig = 0x00000102,
/** [EOVERFLOW] Value too large for data type */
NvSciError_Overflow = 0x00000103,
/* Timing/temporary errors */
/** [ETIMEDOUT] Operation timed out*/
NvSciError_Timeout = 0x00000200,
/** [EAGAIN] Resource unavailable. Try again. */
NvSciError_TryItAgain = 0x00000201,
/** [EBUSY] Resource is busy */
NvSciError_Busy = 0x00000202,
/** [EINTR] An interrupt ocurred */
NvSciError_InterruptedCall = 0x00000203,
/* Device errors */
/** [ENODEV] No such device */
NvSciError_NoSuchDevice = 0x00001000,
/** [ENOSPC] No space left on device */
NvSciError_NoSpace = 0x00001001,
/** [ENXIO] No such device or address */
NvSciError_NoSuchDevAddr = 0x00001002,
/** [EIO] Input/output error */
NvSciError_IO = 0x00001003,
/** [ENOTTY] Inappropriate I/O control operation */
NvSciError_InvalidIoctlNum = 0x00001004,
/* File system errors */
/** [ENOENT] No such file or directory*/
NvSciError_NoSuchEntry = 0x00001100,
/** [EBADF] Bad file descriptor */
NvSciError_BadFileDesc = 0x00001101,
/** [EBADFSYS] Corrupted file system detected */
NvSciError_CorruptedFileSys = 0x00001102,
/** [EEXIST] File already exists */
NvSciError_FileExists = 0x00001103,
/** [EISDIR] File is a directory */
NvSciError_IsDirectory = 0x00001104,
/** [EROFS] Read-only file system */
NvSciError_ReadOnlyFileSys = 0x00001105,
/** [ETXTBSY] Text file is busy */
NvSciError_TextFileBusy = 0x00001106,
/** [ENAMETOOLONG] File name is too long */
NvSciError_FileNameTooLong = 0x00001107,
/** [EFBIG] File is too large */
NvSciError_FileTooBig = 0x00001108,
/** [ELOOP] Too many levels of symbolic links */
NvSciError_TooManySymbolLinks = 0x00001109,
/** [EMFILE] Too many open files in process*/
NvSciError_TooManyOpenFiles = 0x0000110A,
/** [ENFILE] Too many open files in system */
NvSciError_FileTableOverflow = 0x0000110B,
/** End of file reached */
NvSciError_EndOfFile = 0x0000110C,
/* Communication errors */
/** [ECONNRESET] Connection was closed or lost */
NvSciError_ConnectionReset = 0x00001200,
/** [EALREADY] Pending connection is already in progress */
NvSciError_AlreadyInProgress = 0x00001201,
/** [ENODATA] No message data available */
NvSciError_NoData = 0x00001202,
/** [ENOMSG] No message of the desired type available*/
NvSciError_NoDesiredMessage = 0x00001203,
/** [EMSGSIZE] Message is too large */
NvSciError_MessageSize = 0x00001204,
/** [ENOREMOTE] Remote node doesn't exist */
NvSciError_NoRemote = 0x00001205,
/* Process/thread errors */
/** [ESRCH] No such process */
NvSciError_NoSuchProcess = 0x00002000,
/* Mutex errors */
/** [ENOTRECOVERABLE] Mutex damaged by previous owner's death */
NvSciError_MutexNotRecoverable = 0x00002100,
/** [EOWNERDEAD] Previous owner died while holding mutex */
NvSciError_LockOwnerDead = 0x00002101,
/** [EDEADLK] Taking ownership would cause deadlock */
NvSciError_ResourceDeadlock = 0x00002102,
/* NvSci attribute list errors */
/** Could not reconcile attributes */
NvSciError_ReconciliationFailed = 0x00010100,
/** Could not validate attributes */
NvSciError_AttrListValidationFailed = 0x00010101,
/** End of range for common error codes */
NvSciError_CommonEnd = 0x00FFFFFF,
/* Range 0x01000000 - 0x01FFFFFF : NvSciBuf errors */
/** Unidentified NvSciBuf error with no additional info */
NvSciError_NvSciBufUnknown = 0x01000000,
/** End of range for NvSciBuf errors */
NvSciError_NvSciBufEnd = 0x01FFFFFF,
/* Range 0x02000000 - 0x02FFFFFF : NvSciSync errors */
/** Unidentified NvSciSync error with no additional info */
NvSciError_NvSciSyncUnknown = 0x02000000,
/** Unsupported configuration */
NvSciError_UnsupportedConfig = 0x02000001,
/** Provided fence is cleared */
NvSciError_ClearedFence = 0x02000002,
/* End of range for NvScSync errors */
NvSciError_NvSciSyncEnd = 0x02FFFFFF,
/* Range 0x03000000 - 0x03FFFFFF : NvSciStream errors */
/** Unidentified NvSciStream error with no additional info */
NvSciError_NvSciStreamUnknown = 0x03000000,
/** Internal stream resource failure occurred */
NvSciError_StreamInternalError = 0x30000001,
/** Operation requires stream be fully connected */
NvSciError_StreamNotConnected = 0x30000200,
/** No stream packet available */
NvSciError_NoStreamPacket = 0x30001000,
/** End of range for NvSciStream errors */
NvSciError_NvSciStreamEnd = 0x03FFFFFF,
/* Range 0x04000000 - 0x04FFFFFF : NvSciIpc errors */
/** Unidentified NvSciIpc error with no additional info */
NvSciError_NvSciIpcUnknown = 0x04000000,
/** End of range for NvSciIpc errors */
NvSciError_NvSciIpcEnd = 0x04FFFFFF,
/* Range 0x05000000 - 0x05FFFFFF : NvSciEvent errors */
/** Unidentified NvSciEvent error with no additional info */
NvSciError_NvSciEventUnknown = 0x05000000,
/** End of range for NvSciEvent errors */
NvSciError_NvSciEventEnd = 0x05FFFFFF,
} NvSciError;
/*
* @}
*/
#endif /* INCLUDED_NVSCI_ERROR_H */

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/*
* Copyright (c) 2019, 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.
*/
#ifndef __NVSCIIPC_INTERFACE_H__
#define __NVSCIIPC_INTERFACE_H__
/** Invalid VUID definition */
#define NVSCIIPC_ENDPOINT_VUID_INVALID 0U
/** Invalid authentication token definition */
#define NVSCIIPC_ENDPOINT_AUTHTOKEN_INVALID 0U
/** current self SOC ID */
#define NVSCIIPC_SELF_SOCID 0xFFFFFFFFU
/** current self VM ID */
#define NVSCIIPC_SELF_VMID 0xFFFFFFFFU
/**
* @brief Handle to the IPC endpoint.
*/
typedef uint64_t NvSciIpcEndpoint;
/**
* @brief VUID(VM unique ID) of the IPC endpoint.
*/
typedef uint64_t NvSciIpcEndpointVuid;
/**
* @brief authentication token of the IPC endpoint.
*/
typedef uint64_t NvSciIpcEndpointAuthToken;
/**
* @brief Defines topology ID of the IPC endpoint.
*/
typedef struct {
/*! Holds SOC ID */
uint32_t SocId;
/*! Holds VMID */
uint32_t VmId;
} NvSciIpcTopoId;
/**********************************************************************/
/*********************** Function Definitions *************************/
/**********************************************************************/
NvSciError NvSciIpcEndpointGetAuthToken(NvSciIpcEndpoint handle,
NvSciIpcEndpointAuthToken *authToken);
NvSciError NvSciIpcEndpointValidateAuthTokenLinuxCurrent(
NvSciIpcEndpointAuthToken authToken,
NvSciIpcEndpointVuid *localUserVuid);
NvSciError NvSciIpcEndpointMapVuid(NvSciIpcEndpointVuid localUserVuid,
NvSciIpcTopoId *peerTopoId, NvSciIpcEndpointVuid *peerUserVuid);
NvSciError NvSciIpcEndpointGetVuid(NvSciIpcEndpoint handle,
NvSciIpcEndpointVuid *vuid);
#endif /* __NVSCIIPC_INTERFACE_H__ */

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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__ */