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Upload 1.5_ED3776568 DDK to drivers/gpu/rogue_m. Change-Id: If9c88760e3c311f04a1e11c6ec102b1a92b1299f Signed-off-by: zxl <zhuangxl@rock-chips.com>
170 lines
6.9 KiB
C
170 lines
6.9 KiB
C
/*************************************************************************/ /*!
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@File lock.h
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@Title Locking interface
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@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
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@Description Services internal locking interface
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@License Dual MIT/GPLv2
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The contents of this file are subject to the MIT license as set out below.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 2 ("GPL") in which case the provisions
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of GPL are applicable instead of those above.
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If you wish to allow use of your version of this file only under the terms of
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GPL, and not to allow others to use your version of this file under the terms
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of the MIT license, indicate your decision by deleting the provisions above
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and replace them with the notice and other provisions required by GPL as set
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out in the file called "GPL-COPYING" included in this distribution. If you do
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not delete the provisions above, a recipient may use your version of this file
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under the terms of either the MIT license or GPL.
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This License is also included in this distribution in the file called
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"MIT-COPYING".
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EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
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PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/ /**************************************************************************/
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#ifndef _LOCK_H_
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#define _LOCK_H_
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/* In Linux kernel mode we are using the kernel mutex implementation directly
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* with macros. This allows us to use the kernel lockdep feature for lock
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* debugging. */
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#include "lock_types.h"
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#if defined(LINUX) && defined(__KERNEL__)
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#include "allocmem.h"
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#include <asm/atomic.h>
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#define OSLockCreate(phLock, eLockType) ({ \
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PVRSRV_ERROR e = PVRSRV_ERROR_OUT_OF_MEMORY; \
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*(phLock) = OSAllocMem(sizeof(struct mutex)); \
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if (*(phLock)) { mutex_init(*(phLock)); e = PVRSRV_OK; }; \
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e;})
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#define OSLockDestroy(hLock) ({mutex_destroy((hLock)); OSFreeMem((hLock)); PVRSRV_OK;})
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#define OSLockAcquire(hLock) ({mutex_lock((hLock)); PVRSRV_OK;})
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#define OSLockAcquireNested(hLock, subclass) ({mutex_lock_nested((hLock), (subclass)); PVRSRV_OK;})
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#define OSLockRelease(hLock) ({mutex_unlock((hLock)); PVRSRV_OK;})
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#define OSLockIsLocked(hLock) ({IMG_BOOL b = ((mutex_is_locked((hLock)) == 1) ? IMG_TRUE : IMG_FALSE); b;})
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#define OSTryLockAcquire(hLock) ({IMG_BOOL b = ((mutex_trylock(hLock) == 1) ? IMG_TRUE : IMG_FALSE); b;})
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/* These _may_ be reordered or optimized away entirely by the compiler/hw */
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#define OSAtomicRead(pCounter) ({IMG_INT rv = atomic_read(pCounter); rv;})
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#define OSAtomicWrite(pCounter, i) ({ atomic_set(pCounter, i); })
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/* The following atomic operations, in addition to being SMP-safe, also
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imply a memory barrier around the operation */
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#define OSAtomicIncrement(pCounter) ({IMG_INT rv = atomic_inc_return(pCounter); rv;})
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#define OSAtomicDecrement(pCounter) ({IMG_INT rv = atomic_dec_return(pCounter); rv;})
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#define OSAtomicCompareExchange(pCounter, oldv, newv) ({IMG_INT rv = atomic_cmpxchg(pCounter,oldv,newv); rv;})
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#define OSAtomicAdd(pCounter, incr) ({IMG_INT rv = atomic_add_return(incr,pCounter); rv;})
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#define OSAtomicAddUnless(pCounter, incr, test) ({IMG_INT rv = __atomic_add_unless(pCounter,incr,test); rv;})
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#define OSAtomicSubtract(pCounter, incr) ({IMG_INT rv = atomic_add_return(-(incr),pCounter); rv;})
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#define OSAtomicSubtractUnless(pCounter, incr, test) OSAtomicAddUnless(pCounter, -(incr), test)
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#else /* defined(LINUX) && defined(__KERNEL__) */
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#include "img_types.h"
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#include "pvrsrv_error.h"
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IMG_INTERNAL
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PVRSRV_ERROR OSLockCreate(POS_LOCK *phLock, LOCK_TYPE eLockType);
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IMG_INTERNAL
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IMG_VOID OSLockDestroy(POS_LOCK hLock);
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IMG_INTERNAL
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IMG_VOID OSLockAcquire(POS_LOCK hLock);
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/* Nested notation isn't used in UM or other OS's */
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#define OSLockAcquireNested(hLock, subclass) OSLockAcquire((hLock))
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IMG_INTERNAL
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IMG_VOID OSLockRelease(POS_LOCK hLock);
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IMG_INTERNAL
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IMG_BOOL OSLockIsLocked(POS_LOCK hLock);
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#if defined(LINUX)
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/* Use GCC intrinsics (read/write semantics consistent with kernel-side implementation) */
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#define OSAtomicRead(pCounter) ({IMG_INT rv = *(volatile int *)&(pCounter)->counter; rv;})
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#define OSAtomicWrite(pCounter, i) ({(pCounter)->counter = (IMG_INT) i;})
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#define OSAtomicIncrement(pCounter) ({IMG_INT rv = __sync_add_and_fetch((&(pCounter)->counter), 1); rv;})
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#define OSAtomicDecrement(pCounter) ({IMG_INT rv = __sync_sub_and_fetch((&(pCounter)->counter), 1); rv;})
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#define OSAtomicCompareExchange(pCounter, oldv, newv) \
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({IMG_INT rv = __sync_val_compare_and_swap((&(pCounter)->counter), oldv, newv); rv;})
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#define OSAtomicAdd(pCounter, incr) ({IMG_INT rv = __sync_add_and_fetch((&(pCounter)->counter), incr); rv;})
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#define OSAtomicAddUnless(pCounter, incr, test) ({ \
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int c; int old; \
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c = OSAtomicRead(pCounter); \
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while (1) { \
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if (c == (test)) break; \
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old = OSAtomicCompareExchange(pCounter, c, c+(incr)); \
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if (old == c) break; \
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c = old; \
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} c; })
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#define OSAtomicSubtract(pCounter, incr) OSAtomicAdd(pCounter, -(incr))
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#define OSAtomicSubtractUnless(pCounter, incr, test) OSAtomicAddUnless(pCounter, -(incr), test)
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#else
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/* These _may_ be reordered or optimized away entirely by the compiler/hw */
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IMG_INTERNAL
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IMG_INT OSAtomicRead(ATOMIC_T *pCounter);
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IMG_INTERNAL
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IMG_VOID OSAtomicWrite(ATOMIC_T *pCounter, IMG_INT v);
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/* For the following atomic operations, in addition to being SMP-safe,
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_should_ also have a memory barrier around each operation */
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IMG_INTERNAL
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IMG_INT OSAtomicIncrement(ATOMIC_T *pCounter);
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IMG_INTERNAL
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IMG_INT OSAtomicDecrement(ATOMIC_T *pCounter);
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IMG_INTERNAL
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IMG_INT OSAtomicAdd(ATOMIC_T *pCounter, IMG_INT v);
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IMG_INTERNAL
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IMG_INT OSAtomicAddUnless(ATOMIC_T *pCounter, IMG_INT v, IMG_INT t);
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IMG_INTERNAL
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IMG_INT OSAtomicSubtract(ATOMIC_T *pCounter, IMG_INT v);
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IMG_INTERNAL
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IMG_INT OSAtomicSubtractUnless(ATOMIC_T *pCounter, IMG_INT v, IMG_INT t);
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IMG_INTERNAL
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IMG_INT OSAtomicCompareExchange(ATOMIC_T *pCounter, IMG_INT oldv, IMG_INT newv);
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#endif /* defined(LINUX) */
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#endif /* defined(LINUX) && defined(__KERNEL__) */
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#endif /* _LOCK_H_ */
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