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drivers: misc: Add nvsciipc kernel module
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>
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Abhijit
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include/linux/nvscierror.h
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220
include/linux/nvscierror.h
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/*
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* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
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*
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* NVIDIA Corporation and its licensors retain all intellectual property
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* and proprietary rights in and to this software, related documentation
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* and any modifications thereto. Any use, reproduction, disclosure or
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* distribution of this software and related documentation without an express
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* license agreement from NVIDIA Corporation is strictly prohibited.
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*/
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/*
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* @file
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*
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* <b> NVIDIA Software Communications Interface (SCI): Error Handling </b>
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*
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* @b Description: This file declares error codes for NvSci APIs.
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*/
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#ifndef INCLUDED_NVSCI_ERROR_H
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#define INCLUDED_NVSCI_ERROR_H
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/**
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* @defgroup NvSciError SCI Error Handling
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*
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* Contains error code enumeration and helper macros.
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*
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* @ingroup nvsci_top
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* @{
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*/
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/**
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* @brief Return/error codes for all NvSci functions.
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*
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* This enumeration contains unique return/error codes to identify the
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* source of a failure. Some errors have direct correspondence to standard
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* errno.h codes, indicated [IN BRACKETS], and may result from failures in
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* lower level system calls. Others indicate failures specific to misuse
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* of NvSci library function.
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*/
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typedef enum NvSciErrorRec {
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/* Range 0x00000000 - 0x00FFFFFF : Common errors
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* This range is used for errors common to all NvSci libraries.
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*/
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/** [EOK] No error */
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NvSciError_Success = 0x00000000,
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/** Unidentified error with no additional info */
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NvSciError_Unknown = 0x00000001,
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/* Generic errors */
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/** [ENOSYS] Feature is not implemented */
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NvSciError_NotImplemented = 0x00000010,
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/** [ENOTSUP] Feature is not supported */
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NvSciError_NotSupported = 0x00000011,
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/** [EACCES] Access to resource denied */
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NvSciError_AccessDenied = 0x00000020,
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/** [EPERM] No permission to perform operation */
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NvSciError_NotPermitted = 0x00000021,
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/** Resource is in wrong state to perform operation */
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NvSciError_InvalidState = 0x00000022,
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/** Requested operation is not legal */
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NvSciError_InvalidOperation = 0x00000023,
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/** Required resource is not initialized */
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NvSciError_NotInitialized = 0x00000024,
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/** [ENOMEM] Not enough memory */
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NvSciError_InsufficientMemory = 0x00000030,
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/** Not enough (non-memory) resources */
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NvSciError_InsufficientResource = 0x00000031,
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/** Resource failed */
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NvSciError_ResourceError = 0x00000032,
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/* Function parameter errors */
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/** [EINVAL] Invalid parameter value */
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NvSciError_BadParameter = 0x00000100,
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/** [EFAULT] Invalid address */
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NvSciError_BadAddress = 0x00000101,
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/** [E2BIG] Parameter list too long */
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NvSciError_TooBig = 0x00000102,
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/** [EOVERFLOW] Value too large for data type */
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NvSciError_Overflow = 0x00000103,
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/* Timing/temporary errors */
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/** [ETIMEDOUT] Operation timed out*/
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NvSciError_Timeout = 0x00000200,
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/** [EAGAIN] Resource unavailable. Try again. */
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NvSciError_TryItAgain = 0x00000201,
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/** [EBUSY] Resource is busy */
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NvSciError_Busy = 0x00000202,
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/** [EINTR] An interrupt ocurred */
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NvSciError_InterruptedCall = 0x00000203,
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/* Device errors */
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/** [ENODEV] No such device */
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NvSciError_NoSuchDevice = 0x00001000,
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/** [ENOSPC] No space left on device */
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NvSciError_NoSpace = 0x00001001,
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/** [ENXIO] No such device or address */
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NvSciError_NoSuchDevAddr = 0x00001002,
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/** [EIO] Input/output error */
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NvSciError_IO = 0x00001003,
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/** [ENOTTY] Inappropriate I/O control operation */
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NvSciError_InvalidIoctlNum = 0x00001004,
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/* File system errors */
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/** [ENOENT] No such file or directory*/
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NvSciError_NoSuchEntry = 0x00001100,
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/** [EBADF] Bad file descriptor */
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NvSciError_BadFileDesc = 0x00001101,
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/** [EBADFSYS] Corrupted file system detected */
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NvSciError_CorruptedFileSys = 0x00001102,
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/** [EEXIST] File already exists */
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NvSciError_FileExists = 0x00001103,
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/** [EISDIR] File is a directory */
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NvSciError_IsDirectory = 0x00001104,
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/** [EROFS] Read-only file system */
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NvSciError_ReadOnlyFileSys = 0x00001105,
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/** [ETXTBSY] Text file is busy */
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NvSciError_TextFileBusy = 0x00001106,
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/** [ENAMETOOLONG] File name is too long */
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NvSciError_FileNameTooLong = 0x00001107,
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/** [EFBIG] File is too large */
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NvSciError_FileTooBig = 0x00001108,
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/** [ELOOP] Too many levels of symbolic links */
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NvSciError_TooManySymbolLinks = 0x00001109,
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/** [EMFILE] Too many open files in process*/
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NvSciError_TooManyOpenFiles = 0x0000110A,
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/** [ENFILE] Too many open files in system */
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NvSciError_FileTableOverflow = 0x0000110B,
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/** End of file reached */
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NvSciError_EndOfFile = 0x0000110C,
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/* Communication errors */
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/** [ECONNRESET] Connection was closed or lost */
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NvSciError_ConnectionReset = 0x00001200,
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/** [EALREADY] Pending connection is already in progress */
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NvSciError_AlreadyInProgress = 0x00001201,
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/** [ENODATA] No message data available */
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NvSciError_NoData = 0x00001202,
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/** [ENOMSG] No message of the desired type available*/
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NvSciError_NoDesiredMessage = 0x00001203,
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/** [EMSGSIZE] Message is too large */
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NvSciError_MessageSize = 0x00001204,
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/** [ENOREMOTE] Remote node doesn't exist */
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NvSciError_NoRemote = 0x00001205,
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/* Process/thread errors */
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/** [ESRCH] No such process */
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NvSciError_NoSuchProcess = 0x00002000,
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/* Mutex errors */
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/** [ENOTRECOVERABLE] Mutex damaged by previous owner's death */
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NvSciError_MutexNotRecoverable = 0x00002100,
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/** [EOWNERDEAD] Previous owner died while holding mutex */
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NvSciError_LockOwnerDead = 0x00002101,
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/** [EDEADLK] Taking ownership would cause deadlock */
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NvSciError_ResourceDeadlock = 0x00002102,
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/* NvSci attribute list errors */
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/** Could not reconcile attributes */
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NvSciError_ReconciliationFailed = 0x00010100,
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/** Could not validate attributes */
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NvSciError_AttrListValidationFailed = 0x00010101,
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/** End of range for common error codes */
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NvSciError_CommonEnd = 0x00FFFFFF,
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/* Range 0x01000000 - 0x01FFFFFF : NvSciBuf errors */
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/** Unidentified NvSciBuf error with no additional info */
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NvSciError_NvSciBufUnknown = 0x01000000,
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/** End of range for NvSciBuf errors */
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NvSciError_NvSciBufEnd = 0x01FFFFFF,
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/* Range 0x02000000 - 0x02FFFFFF : NvSciSync errors */
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/** Unidentified NvSciSync error with no additional info */
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NvSciError_NvSciSyncUnknown = 0x02000000,
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/** Unsupported configuration */
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NvSciError_UnsupportedConfig = 0x02000001,
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/** Provided fence is cleared */
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NvSciError_ClearedFence = 0x02000002,
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/* End of range for NvScSync errors */
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NvSciError_NvSciSyncEnd = 0x02FFFFFF,
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/* Range 0x03000000 - 0x03FFFFFF : NvSciStream errors */
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/** Unidentified NvSciStream error with no additional info */
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NvSciError_NvSciStreamUnknown = 0x03000000,
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/** Internal stream resource failure occurred */
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NvSciError_StreamInternalError = 0x30000001,
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/** Operation requires stream be fully connected */
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NvSciError_StreamNotConnected = 0x30000200,
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/** No stream packet available */
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NvSciError_NoStreamPacket = 0x30001000,
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/** End of range for NvSciStream errors */
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NvSciError_NvSciStreamEnd = 0x03FFFFFF,
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/* Range 0x04000000 - 0x04FFFFFF : NvSciIpc errors */
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/** Unidentified NvSciIpc error with no additional info */
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NvSciError_NvSciIpcUnknown = 0x04000000,
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/** End of range for NvSciIpc errors */
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NvSciError_NvSciIpcEnd = 0x04FFFFFF,
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/* Range 0x05000000 - 0x05FFFFFF : NvSciEvent errors */
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/** Unidentified NvSciEvent error with no additional info */
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NvSciError_NvSciEventUnknown = 0x05000000,
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/** End of range for NvSciEvent errors */
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NvSciError_NvSciEventEnd = 0x05FFFFFF,
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} NvSciError;
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/*
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* @}
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*/
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#endif /* INCLUDED_NVSCI_ERROR_H */
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68
include/linux/nvsciipc_interface.h
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68
include/linux/nvsciipc_interface.h
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@@ -0,0 +1,68 @@
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/*
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* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __NVSCIIPC_INTERFACE_H__
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#define __NVSCIIPC_INTERFACE_H__
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/** Invalid VUID definition */
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#define NVSCIIPC_ENDPOINT_VUID_INVALID 0U
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/** Invalid authentication token definition */
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#define NVSCIIPC_ENDPOINT_AUTHTOKEN_INVALID 0U
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/** current self SOC ID */
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#define NVSCIIPC_SELF_SOCID 0xFFFFFFFFU
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/** current self VM ID */
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#define NVSCIIPC_SELF_VMID 0xFFFFFFFFU
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/**
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* @brief Handle to the IPC endpoint.
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*/
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typedef uint64_t NvSciIpcEndpoint;
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/**
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* @brief VUID(VM unique ID) of the IPC endpoint.
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*/
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typedef uint64_t NvSciIpcEndpointVuid;
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/**
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* @brief authentication token of the IPC endpoint.
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*/
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typedef uint64_t NvSciIpcEndpointAuthToken;
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/**
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* @brief Defines topology ID of the IPC endpoint.
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*/
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typedef struct {
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/*! Holds SOC ID */
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uint32_t SocId;
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/*! Holds VMID */
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uint32_t VmId;
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} NvSciIpcTopoId;
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/**********************************************************************/
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/*********************** Function Definitions *************************/
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/**********************************************************************/
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NvSciError NvSciIpcEndpointGetAuthToken(NvSciIpcEndpoint handle,
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NvSciIpcEndpointAuthToken *authToken);
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NvSciError NvSciIpcEndpointValidateAuthTokenLinuxCurrent(
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NvSciIpcEndpointAuthToken authToken,
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NvSciIpcEndpointVuid *localUserVuid);
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NvSciError NvSciIpcEndpointMapVuid(NvSciIpcEndpointVuid localUserVuid,
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NvSciIpcTopoId *peerTopoId, NvSciIpcEndpointVuid *peerUserVuid);
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NvSciError NvSciIpcEndpointGetVuid(NvSciIpcEndpoint handle,
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NvSciIpcEndpointVuid *vuid);
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#endif /* __NVSCIIPC_INTERFACE_H__ */
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