| /*************************************************************************/ /*! |
| @File |
| @Title Environment related functions |
| @Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved |
| @License MIT |
| |
| The contents of this file are subject to the MIT license as set out below. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| This License is also included in this distribution in the file called |
| "MIT-COPYING". |
| |
| EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS |
| PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
| BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
| PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR |
| COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ /**************************************************************************/ |
| |
| #include "osfunc.h" |
| #include "cache_km.h" |
| #include "img_types.h" |
| #include "allocmem.h" |
| #include "pvr_debug.h" |
| |
| #define NOT_IMPLEMENTED() fprintf(stderr, "msd-img-rgx-mtk: Not implemented in %s:%s:%d\n", __func__, __FILE__, __LINE__); |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicRead |
| @Description Read the value of a variable atomically. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to read |
| @Return The value of the atomic variable |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicRead(const ATOMIC_T *pCounter) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicWrite |
| @Description Write the value of a variable atomically. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to be written to |
| @Input v The value to write |
| @Return None |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| void |
| OSAtomicWrite(ATOMIC_T *pCounter, IMG_INT32 v) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| |
| /* For the following atomic operations, in addition to being SMP-safe, |
| should also have a memory barrier around each operation */ |
| /*************************************************************************/ /*! |
| @Function OSAtomicIncrement |
| @Description Increment the value of a variable atomically. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to be incremented |
| @Return The new value of *pCounter. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicIncrement(ATOMIC_T *pCounter) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicDecrement |
| @Description Decrement the value of a variable atomically. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to be decremented |
| @Return The new value of *pCounter. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicDecrement(ATOMIC_T *pCounter) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicAdd |
| @Description Add a specified value to a variable atomically. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to add the value to |
| @Input v The value to be added |
| @Return The new value of *pCounter. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicAdd(ATOMIC_T *pCounter, IMG_INT32 v) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicAddUnless |
| @Description Add a specified value to a variable atomically unless it |
| already equals a particular value. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to add the value to |
| @Input v The value to be added to 'pCounter' |
| @Input t The test value. If 'pCounter' equals this, |
| its value will not be adjusted |
| @Return The new value of *pCounter. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicAddUnless(ATOMIC_T *pCounter, IMG_INT32 v, IMG_INT32 t) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicSubtract |
| @Description Subtract a specified value to a variable atomically. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to subtract the value from |
| @Input v The value to be subtracted |
| @Return The new value of *pCounter. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicSubtract(ATOMIC_T *pCounter, IMG_INT32 v) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicSubtractUnless |
| @Description Subtract a specified value from a variable atomically unless |
| it already equals a particular value. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to subtract the value from |
| @Input v The value to be subtracted from 'pCounter' |
| @Input t The test value. If 'pCounter' equals this, |
| its value will not be adjusted |
| @Return The new value of *pCounter. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicSubtractUnless(ATOMIC_T *pCounter, IMG_INT32 v, IMG_INT32 t) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| /*************************************************************************/ /*! |
| @Function OSAtomicCompareExchange |
| @Description Set a variable to a given value only if it is currently |
| equal to a specified value. The whole operation must be atomic. |
| Atomic functions must be implemented in a manner that |
| is both symmetric multiprocessor (SMP) safe and has a memory |
| barrier around each operation. |
| @Input pCounter The atomic variable to be checked and |
| possibly updated |
| @Input oldv The value the atomic variable must have in |
| order to be modified |
| @Input newv The value to write to the atomic variable if |
| it equals 'oldv' |
| @Return The value of *pCounter after the function. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_INT32 |
| OSAtomicCompareExchange(ATOMIC_T *pCounter, IMG_INT32 oldv, IMG_INT32 newv) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| |
| /**************************************************************************/ /*! |
| @Function OSLockCreate |
| @Description Creates an operating system lock object. |
| @Output phLock The created lock. |
| @Input eLockType The type of lock required. This may be: |
| LOCK_TYPE_PASSIVE - the lock will not be used |
| in interrupt context or |
| LOCK_TYPE_DISPATCH - the lock may be used |
| in interrupt context. |
| @Return PVRSRV_OK on success. PVRSRV_ERROR_OUT_OF_MEMORY if the driver |
| cannot allocate CPU memory needed for the lock. |
| PVRSRV_ERROR_INIT_FAILURE if the Operating System fails to |
| allocate the lock. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| PVRSRV_ERROR |
| OSLockCreate(POS_LOCK *phLock, LOCK_TYPE eLockType) |
| { |
| NOT_IMPLEMENTED(); |
| return PVRSRV_ERROR_NOT_SUPPORTED; |
| } |
| |
| /**************************************************************************/ /*! |
| @Function OSLockDestroy |
| @Description Destroys an operating system lock object. |
| @Input hLock The lock to be destroyed. |
| @Return None. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| PVRSRV_ERROR |
| OSLockDestroy(POS_LOCK hLock) |
| { |
| NOT_IMPLEMENTED(); |
| return PVRSRV_ERROR_NOT_SUPPORTED; |
| } |
| /**************************************************************************/ /*! |
| @Function OSLockAcquire |
| @Description Acquires an operating system lock. |
| NB. This function must not return until the lock is acquired |
| (meaning the implementation should not timeout or return with |
| an error, as the caller will assume they have the lock). |
| @Input hLock The lock to be acquired. |
| @Return None. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| void |
| OSLockAcquire(POS_LOCK hLock) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| |
| /**************************************************************************/ /*! |
| @Function OSTryLockAcquire |
| @Description Try to acquire an operating system lock. |
| NB. If lock is acquired successfully in the first attempt, |
| then the function returns true and else it will return false. |
| @Input hLock The lock to be acquired. |
| @Return IMG_TRUE if lock acquired successfully, |
| IMG_FALSE otherwise. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_BOOL |
| OSTryLockAcquire(POS_LOCK hLock) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |
| |
| /**************************************************************************/ /*! |
| @Function OSLockRelease |
| @Description Releases an operating system lock. |
| @Input hLock The lock to be released. |
| @Return None. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| void |
| OSLockRelease(POS_LOCK hLock) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| |
| /**************************************************************************/ /*! |
| @Function OSLockIsLocked |
| @Description Tests whether or not an operating system lock is currently |
| locked. |
| @Input hLock The lock to be tested. |
| @Return IMG_TRUE if locked, IMG_FALSE if not locked. |
| */ /**************************************************************************/ |
| IMG_INTERNAL |
| IMG_BOOL |
| OSLockIsLocked(POS_LOCK hLock) |
| { |
| NOT_IMPLEMENTED(); |
| return 0; |
| } |