1 /* 2 * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. 3 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef GRALLOC_IONALLOC_H 31 #define GRALLOC_IONALLOC_H 32 33 #include <linux/msm_ion.h> 34 #include "memalloc.h" 35 #include "gr.h" 36 37 namespace gralloc { 38 39 class IonAlloc : public IMemAlloc { 40 41 public: 42 virtual int alloc_buffer(alloc_data& data); 43 44 virtual int free_buffer(void *base, unsigned int size, 45 unsigned int offset, int fd); 46 47 virtual int map_buffer(void **pBase, unsigned int size, 48 unsigned int offset, int fd); 49 50 virtual int unmap_buffer(void *base, unsigned int size, 51 unsigned int offset); 52 53 virtual int clean_buffer(void*base, unsigned int size, 54 unsigned int offset, int fd, int op); 55 56 IonAlloc() { mIonFd = FD_INIT; } 57 58 ~IonAlloc() { close_device(); } 59 60 private: 61 int mIonFd; 62 63 int open_device(); 64 65 void close_device(); 66 67 mutable Locker mLock; 68 69 }; 70 71 } 72 73 #endif /* GRALLOC_IONALLOC_H */ 74 75
