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      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 #include <cutils/log.h>
     31 #include <algorithm>
     32 #include <vector>
     33 
     34 #include "gr_utils.h"
     35 #include "gr_allocator.h"
     36 #include "gralloc_priv.h"
     37 
     38 #include "qd_utils.h"
     39 
     40 #ifndef ION_FLAG_CP_PIXEL
     41 #define ION_FLAG_CP_PIXEL 0
     42 #endif
     43 
     44 #ifndef ION_FLAG_ALLOW_NON_CONTIG
     45 #define ION_FLAG_ALLOW_NON_CONTIG 0
     46 #endif
     47 
     48 #ifndef ION_FLAG_CP_CAMERA_PREVIEW
     49 #define ION_FLAG_CP_CAMERA_PREVIEW 0
     50 #endif
     51 
     52 #ifdef MASTER_SIDE_CP
     53 #define CP_HEAP_ID ION_SECURE_HEAP_ID
     54 #define SD_HEAP_ID ION_SECURE_DISPLAY_HEAP_ID
     55 #define ION_CP_FLAGS (ION_SECURE | ION_FLAG_CP_PIXEL)
     56 #define ION_SD_FLAGS (ION_SECURE | ION_FLAG_CP_SEC_DISPLAY)
     57 #define ION_SC_FLAGS (ION_SECURE | ION_FLAG_CP_CAMERA)
     58 #define ION_SC_PREVIEW_FLAGS (ION_SECURE | ION_FLAG_CP_CAMERA_PREVIEW)
     59 #else  // SLAVE_SIDE_CP
     60 #define CP_HEAP_ID ION_CP_MM_HEAP_ID
     61 #define SD_HEAP_ID CP_HEAP_ID
     62 #define ION_CP_FLAGS (ION_SECURE | ION_FLAG_ALLOW_NON_CONTIG)
     63 #define ION_SD_FLAGS ION_SECURE
     64 #define ION_SC_FLAGS ION_SECURE
     65 #define ION_SC_PREVIEW_FLAGS ION_SECURE
     66 #endif
     67 
     68 using std::vector;
     69 using std::shared_ptr;
     70 
     71 namespace gralloc1 {
     72 
     73 static BufferInfo GetBufferInfo(const BufferDescriptor &descriptor) {
     74   return BufferInfo(descriptor.GetWidth(), descriptor.GetHeight(), descriptor.GetFormat(),
     75                     descriptor.GetProducerUsage(), descriptor.GetConsumerUsage());
     76 }
     77 
     78 Allocator::Allocator() : ion_allocator_(NULL) {
     79 }
     80 
     81 bool Allocator::Init() {
     82   ion_allocator_ = new IonAlloc();
     83   if (!ion_allocator_->Init()) {
     84     return false;
     85   }
     86 
     87   return true;
     88 }
     89 
     90 Allocator::~Allocator() {
     91   if (ion_allocator_) {
     92     delete ion_allocator_;
     93   }
     94 }
     95 
     96 int Allocator::AllocateMem(AllocData *alloc_data, gralloc1_producer_usage_t prod_usage,
     97                            gralloc1_consumer_usage_t cons_usage) {
     98   int ret;
     99   alloc_data->uncached = UseUncached(prod_usage, cons_usage);
    100 
    101   // After this point we should have the right heap set, there is no fallback
    102   GetIonHeapInfo(prod_usage, cons_usage, &alloc_data->heap_id, &alloc_data->alloc_type,
    103                  &alloc_data->flags);
    104 
    105   ret = ion_allocator_->AllocBuffer(alloc_data);
    106   if (ret >= 0) {
    107     alloc_data->alloc_type |= private_handle_t::PRIV_FLAGS_USES_ION;
    108   } else {
    109     ALOGE("%s: Failed to allocate buffer - heap: 0x%x flags: 0x%x", __FUNCTION__,
    110           alloc_data->heap_id, alloc_data->flags);
    111   }
    112 
    113   return ret;
    114 }
    115 
    116 int Allocator::MapBuffer(void **base, unsigned int size, unsigned int offset, int fd) {
    117   if (ion_allocator_) {
    118     return ion_allocator_->MapBuffer(base, size, offset, fd);
    119   }
    120 
    121   return -EINVAL;
    122 }
    123 
    124 int Allocator::ImportBuffer(int fd) {
    125   if (ion_allocator_) {
    126     return ion_allocator_->ImportBuffer(fd);
    127   }
    128   return -EINVAL;
    129 }
    130 
    131 int Allocator::FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd,
    132                           int handle) {
    133   if (ion_allocator_) {
    134     return ion_allocator_->FreeBuffer(base, size, offset, fd, handle);
    135   }
    136 
    137   return -EINVAL;
    138 }
    139 
    140 int Allocator::CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op) {
    141   if (ion_allocator_) {
    142     return ion_allocator_->CleanBuffer(base, size, offset, handle, op);
    143   }
    144 
    145   return -EINVAL;
    146 }
    147 
    148 bool Allocator::CheckForBufferSharing(uint32_t num_descriptors,
    149                                       const vector<shared_ptr<BufferDescriptor>>& descriptors,
    150                                       ssize_t *max_index) {
    151   unsigned int cur_heap_id = 0, prev_heap_id = 0;
    152   unsigned int cur_alloc_type = 0, prev_alloc_type = 0;
    153   unsigned int cur_ion_flags = 0, prev_ion_flags = 0;
    154   bool cur_uncached = false, prev_uncached = false;
    155   unsigned int alignedw, alignedh;
    156   unsigned int max_size = 0;
    157 
    158   *max_index = -1;
    159   for (uint32_t i = 0; i < num_descriptors; i++) {
    160     // Check Cached vs non-cached and all the ION flags
    161     cur_uncached = UseUncached(descriptors[i]->GetProducerUsage(),
    162                                descriptors[i]->GetConsumerUsage());
    163     GetIonHeapInfo(descriptors[i]->GetProducerUsage(), descriptors[i]->GetConsumerUsage(),
    164                    &cur_heap_id, &cur_alloc_type, &cur_ion_flags);
    165 
    166     if (i > 0 && (cur_heap_id != prev_heap_id || cur_alloc_type != prev_alloc_type ||
    167                   cur_ion_flags != prev_ion_flags)) {
    168       return false;
    169     }
    170 
    171     // For same format type, find the descriptor with bigger size
    172     GetAlignedWidthAndHeight(GetBufferInfo(*descriptors[i]), &alignedw, &alignedh);
    173     unsigned int size = GetSize(GetBufferInfo(*descriptors[i]), alignedw, alignedh);
    174     if (max_size < size) {
    175       *max_index = INT(i);
    176       max_size = size;
    177     }
    178 
    179     prev_heap_id = cur_heap_id;
    180     prev_uncached = cur_uncached;
    181     prev_ion_flags = cur_ion_flags;
    182     prev_alloc_type = cur_alloc_type;
    183   }
    184 
    185   return true;
    186 }
    187 
    188 int Allocator::GetImplDefinedFormat(gralloc1_producer_usage_t prod_usage,
    189                                     gralloc1_consumer_usage_t cons_usage, int format) {
    190   int gr_format = format;
    191 
    192   // If input format is HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED then based on
    193   // the usage bits, gralloc assigns a format.
    194   if (format == HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED ||
    195       format == HAL_PIXEL_FORMAT_YCbCr_420_888) {
    196     if (prod_usage & GRALLOC1_PRODUCER_USAGE_PRIVATE_ALLOC_UBWC) {
    197       gr_format = HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC;
    198     } else if (cons_usage & GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER) {
    199       gr_format = HAL_PIXEL_FORMAT_NV12_ENCODEABLE;  // NV12
    200     } else if (cons_usage & GRALLOC1_CONSUMER_USAGE_CAMERA) {
    201       if (prod_usage & GRALLOC1_PRODUCER_USAGE_CAMERA) {
    202         // Assumed ZSL if both producer and consumer camera flags set
    203         gr_format = HAL_PIXEL_FORMAT_NV21_ZSL;  // NV21
    204       } else {
    205         gr_format = HAL_PIXEL_FORMAT_YCrCb_420_SP;  // NV21
    206       }
    207     } else if (prod_usage & GRALLOC1_PRODUCER_USAGE_CAMERA) {
    208       if (format == HAL_PIXEL_FORMAT_YCbCr_420_888) {
    209         gr_format = HAL_PIXEL_FORMAT_NV21_ZSL;  // NV21
    210       } else {
    211         gr_format = HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS;  // NV12 preview
    212       }
    213     } else if (cons_usage & GRALLOC1_CONSUMER_USAGE_HWCOMPOSER) {
    214       // XXX: If we still haven't set a format, default to RGBA8888
    215       gr_format = HAL_PIXEL_FORMAT_RGBA_8888;
    216     } else if (format == HAL_PIXEL_FORMAT_YCbCr_420_888) {
    217       // If no other usage flags are detected, default the
    218       // flexible YUV format to NV21_ZSL
    219       gr_format = HAL_PIXEL_FORMAT_NV21_ZSL;
    220     }
    221   }
    222 
    223   return gr_format;
    224 }
    225 
    226 /* The default policy is to return cached buffers unless the client explicity
    227  * sets the PRIVATE_UNCACHED flag or indicates that the buffer will be rarely
    228  * read or written in software. */
    229 bool Allocator::UseUncached(gralloc1_producer_usage_t prod_usage,
    230                             gralloc1_consumer_usage_t cons_usage) {
    231   if ((prod_usage & GRALLOC1_PRODUCER_USAGE_PRIVATE_UNCACHED) ||
    232       (prod_usage & GRALLOC1_PRODUCER_USAGE_PROTECTED)) {
    233     return true;
    234   }
    235 
    236   // CPU read rarely
    237   if ((prod_usage & GRALLOC1_PRODUCER_USAGE_CPU_READ) &&
    238       !(prod_usage & GRALLOC1_PRODUCER_USAGE_CPU_READ_OFTEN)) {
    239     return true;
    240   }
    241 
    242   // CPU  write rarely
    243   if ((prod_usage & GRALLOC1_PRODUCER_USAGE_CPU_WRITE) &&
    244       !(prod_usage & GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN)) {
    245     return true;
    246   }
    247 
    248   if ((prod_usage & GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA) ||
    249       (cons_usage & GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER)) {
    250     return true;
    251   }
    252 
    253   return false;
    254 }
    255 
    256 void Allocator::GetIonHeapInfo(gralloc1_producer_usage_t prod_usage,
    257                                gralloc1_consumer_usage_t cons_usage, unsigned int *ion_heap_id,
    258                                unsigned int *alloc_type, unsigned int *ion_flags) {
    259   unsigned int heap_id = 0;
    260   unsigned int type = 0;
    261   uint32_t flags = 0;
    262   if (prod_usage & GRALLOC1_PRODUCER_USAGE_PROTECTED) {
    263     if (cons_usage & GRALLOC1_CONSUMER_USAGE_PRIVATE_SECURE_DISPLAY) {
    264       heap_id = ION_HEAP(SD_HEAP_ID);
    265       /*
    266        * There is currently no flag in ION for Secure Display
    267        * VM. Please add it to the define once available.
    268        */
    269       flags |= UINT(ION_SD_FLAGS);
    270     } else if (prod_usage & GRALLOC1_PRODUCER_USAGE_CAMERA) {
    271       heap_id = ION_HEAP(SD_HEAP_ID);
    272       if (cons_usage & GRALLOC1_CONSUMER_USAGE_HWCOMPOSER) {
    273         flags |= UINT(ION_SC_PREVIEW_FLAGS);
    274       } else {
    275         flags |= UINT(ION_SC_FLAGS);
    276       }
    277     } else {
    278       heap_id = ION_HEAP(CP_HEAP_ID);
    279       flags |= UINT(ION_CP_FLAGS);
    280     }
    281   } else if (prod_usage & GRALLOC1_PRODUCER_USAGE_PRIVATE_MM_HEAP) {
    282     // MM Heap is exclusively a secure heap.
    283     // If it is used for non secure cases, fallback to IOMMU heap
    284     ALOGW("MM_HEAP cannot be used as an insecure heap. Using system heap instead!!");
    285     heap_id |= ION_HEAP(ION_SYSTEM_HEAP_ID);
    286   }
    287 
    288   if (prod_usage & GRALLOC1_PRODUCER_USAGE_PRIVATE_CAMERA_HEAP) {
    289     heap_id |= ION_HEAP(ION_CAMERA_HEAP_ID);
    290   }
    291 
    292   if (prod_usage & GRALLOC1_PRODUCER_USAGE_PRIVATE_ADSP_HEAP ||
    293       prod_usage & GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA) {
    294     heap_id |= ION_HEAP(ION_ADSP_HEAP_ID);
    295   }
    296 
    297   if (flags & UINT(ION_SECURE)) {
    298     type |= private_handle_t::PRIV_FLAGS_SECURE_BUFFER;
    299   }
    300 
    301   // if no ion heap flags are set, default to system heap
    302   if (!heap_id) {
    303     heap_id = ION_HEAP(ION_SYSTEM_HEAP_ID);
    304   }
    305 
    306   *alloc_type = type;
    307   *ion_flags = flags;
    308   *ion_heap_id = heap_id;
    309 
    310   return;
    311 }
    312 }  // namespace gralloc1
    313