1 /*
2  * Copyright (c) 2011-2017, 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 __GR_ALLOCATOR_H__
31 #define __GR_ALLOCATOR_H__
32 
33 #ifdef MASTER_SIDE_CP
34 #define SECURE_ALIGN SZ_4K
35 #else
36 #define SECURE_ALIGN SZ_1M
37 #endif
38 
39 #include <vector>
40 
41 #include "gralloc_priv.h"
42 #include "gr_buf_descriptor.h"
43 #include "gr_ion_alloc.h"
44 
45 namespace gralloc1 {
46 
47 class Allocator {
48  public:
49   Allocator();
50   ~Allocator();
51   bool Init();
52   int MapBuffer(void **base, unsigned int size, unsigned int offset, int fd);
53   int ImportBuffer(int fd);
54   int FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd, int handle);
55   int CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op);
56   int AllocateMem(AllocData *data, gralloc1_producer_usage_t prod_usage,
57                   gralloc1_consumer_usage_t cons_usage);
58   // @return : index of the descriptor with maximum buffer size req
59   bool CheckForBufferSharing(uint32_t num_descriptors,
60                              const std::vector<std::shared_ptr<BufferDescriptor>>& descriptors,
61                              ssize_t *max_index);
62   int GetImplDefinedFormat(gralloc1_producer_usage_t prod_usage,
63                            gralloc1_consumer_usage_t cons_usage, int format);
64   bool UseUncached(gralloc1_producer_usage_t prod_usage, gralloc1_consumer_usage_t cons_usage);
65 
66  private:
67   void GetIonHeapInfo(gralloc1_producer_usage_t prod_usage, gralloc1_consumer_usage_t cons_usage,
68                       unsigned int *ion_heap_id, unsigned int *alloc_type, unsigned int *ion_flags);
69 
70   IonAlloc *ion_allocator_ = NULL;
71 };
72 
73 }  // namespace gralloc1
74 
75 #endif  // __GR_ALLOCATOR_H__
76