1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18#include <limits.h> 19#include <errno.h> 20#include <pthread.h> 21#include <unistd.h> 22#include <string.h> 23#include <stdarg.h> 24 25#include <sys/mman.h> 26#include <sys/stat.h> 27#include <sys/types.h> 28#include <sys/ioctl.h> 29#include <linux/ashmem.h> 30 31#include <cutils/log.h> 32#include <cutils/atomic.h> 33#include <cutils/ashmem.h> 34 35#include <hardware/hardware.h> 36#include <hardware/gralloc.h> 37 38#include "gralloc_priv.h" 39#include "gr.h" 40#include "alloc_controller.h" 41#include "memalloc.h" 42#include <qdMetaData.h> 43 44using namespace gralloc; 45/*****************************************************************************/ 46 47// Return the type of allocator - 48// these are used for mapping/unmapping 49static IMemAlloc* getAllocator(int flags) 50{ 51 IMemAlloc* memalloc; 52 IAllocController* alloc_ctrl = IAllocController::getInstance(); 53 memalloc = alloc_ctrl->getAllocator(flags); 54 return memalloc; 55} 56 57static int gralloc_map(gralloc_module_t const* module, 58 buffer_handle_t handle) 59{ 60 private_handle_t* hnd = (private_handle_t*)handle; 61 void *mappedAddress; 62 if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) && 63 !(hnd->flags & private_handle_t::PRIV_FLAGS_SECURE_BUFFER)) { 64 size_t size = hnd->size; 65 IMemAlloc* memalloc = getAllocator(hnd->flags) ; 66 int err = memalloc->map_buffer(&mappedAddress, size, 67 hnd->offset, hnd->fd); 68 if(err || mappedAddress == MAP_FAILED) { 69 ALOGE("Could not mmap handle %p, fd=%d (%s)", 70 handle, hnd->fd, strerror(errno)); 71 hnd->base = 0; 72 return -errno; 73 } 74 75 hnd->base = intptr_t(mappedAddress) + hnd->offset; 76 mappedAddress = MAP_FAILED; 77 size = ROUND_UP_PAGESIZE(sizeof(MetaData_t)); 78 err = memalloc->map_buffer(&mappedAddress, size, 79 hnd->offset_metadata, hnd->fd_metadata); 80 if(err || mappedAddress == MAP_FAILED) { 81 ALOGE("Could not mmap handle %p, fd=%d (%s)", 82 handle, hnd->fd_metadata, strerror(errno)); 83 hnd->base_metadata = 0; 84 return -errno; 85 } 86 hnd->base_metadata = intptr_t(mappedAddress) + hnd->offset_metadata; 87 } 88 return 0; 89} 90 91static int gralloc_unmap(gralloc_module_t const* module, 92 buffer_handle_t handle) 93{ 94 private_handle_t* hnd = (private_handle_t*)handle; 95 if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)) { 96 int err = -EINVAL; 97 void* base = (void*)hnd->base; 98 size_t size = hnd->size; 99 IMemAlloc* memalloc = getAllocator(hnd->flags) ; 100 if(memalloc != NULL) { 101 err = memalloc->unmap_buffer(base, size, hnd->offset); 102 if (err) { 103 ALOGE("Could not unmap memory at address %p", base); 104 } 105 base = (void*)hnd->base_metadata; 106 size = ROUND_UP_PAGESIZE(sizeof(MetaData_t)); 107 err = memalloc->unmap_buffer(base, size, hnd->offset_metadata); 108 if (err) { 109 ALOGE("Could not unmap memory at address %p", base); 110 } 111 } 112 } 113 /* need to initialize the pointer to NULL otherwise unmapping for that 114 * buffer happens twice which leads to crash */ 115 hnd->base = 0; 116 hnd->base_metadata = 0; 117 return 0; 118} 119 120/*****************************************************************************/ 121 122static pthread_mutex_t sMapLock = PTHREAD_MUTEX_INITIALIZER; 123 124/*****************************************************************************/ 125 126int gralloc_register_buffer(gralloc_module_t const* module, 127 buffer_handle_t handle) 128{ 129 if (private_handle_t::validate(handle) < 0) 130 return -EINVAL; 131 132 // In this implementation, we don't need to do anything here 133 134 /* NOTE: we need to initialize the buffer as not mapped/not locked 135 * because it shouldn't when this function is called the first time 136 * in a new process. Ideally these flags shouldn't be part of the 137 * handle, but instead maintained in the kernel or at least 138 * out-of-line 139 */ 140 141 private_handle_t* hnd = (private_handle_t*)handle; 142 hnd->base = 0; 143 hnd->base_metadata = 0; 144 int err = gralloc_map(module, handle); 145 if (err) { 146 ALOGE("%s: gralloc_map failed", __FUNCTION__); 147 return err; 148 } 149 150 return 0; 151} 152 153int gralloc_unregister_buffer(gralloc_module_t const* module, 154 buffer_handle_t handle) 155{ 156 if (private_handle_t::validate(handle) < 0) 157 return -EINVAL; 158 159 /* 160 * If the buffer has been mapped during a lock operation, it's time 161 * to un-map it. It's an error to be here with a locked buffer. 162 * NOTE: the framebuffer is handled differently and is never unmapped. 163 */ 164 165 private_handle_t* hnd = (private_handle_t*)handle; 166 167 if (hnd->base != 0) { 168 gralloc_unmap(module, handle); 169 } 170 hnd->base = 0; 171 hnd->base_metadata = 0; 172 return 0; 173} 174 175int terminateBuffer(gralloc_module_t const* module, 176 private_handle_t* hnd) 177{ 178 /* 179 * If the buffer has been mapped during a lock operation, it's time 180 * to un-map it. It's an error to be here with a locked buffer. 181 */ 182 183 if (hnd->base != 0) { 184 // this buffer was mapped, unmap it now 185 if (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_PMEM | 186 private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP | 187 private_handle_t::PRIV_FLAGS_USES_ASHMEM | 188 private_handle_t::PRIV_FLAGS_USES_ION)) { 189 gralloc_unmap(module, hnd); 190 } else { 191 ALOGE("terminateBuffer: unmapping a non pmem/ashmem buffer flags = 0x%x", 192 hnd->flags); 193 gralloc_unmap(module, hnd); 194 } 195 } 196 197 return 0; 198} 199 200static int gralloc_map_and_invalidate (gralloc_module_t const* module, 201 buffer_handle_t handle, int usage, 202 int l, int t, int w, int h) 203{ 204 if (private_handle_t::validate(handle) < 0) 205 return -EINVAL; 206 207 int err = 0; 208 private_handle_t* hnd = (private_handle_t*)handle; 209 if (usage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) { 210 if (hnd->base == 0) { 211 // we need to map for real 212 pthread_mutex_t* const lock = &sMapLock; 213 pthread_mutex_lock(lock); 214 err = gralloc_map(module, handle); 215 pthread_mutex_unlock(lock); 216 } 217 if (hnd->flags & private_handle_t::PRIV_FLAGS_USES_ION) { 218 //Invalidate if reading in software. No need to do this for the 219 //metadata buffer as it is only read/written in software. 220 IMemAlloc* memalloc = getAllocator(hnd->flags) ; 221 err = memalloc->clean_buffer((void*)hnd->base, 222 hnd->size, hnd->offset, hnd->fd, 223 CACHE_INVALIDATE); 224 if (usage & GRALLOC_USAGE_SW_WRITE_MASK) { 225 // Mark the buffer to be flushed after cpu read/write 226 hnd->flags |= private_handle_t::PRIV_FLAGS_NEEDS_FLUSH; 227 } 228 } 229 } else { 230 hnd->flags |= private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH; 231 } 232 return err; 233} 234 235int gralloc_lock(gralloc_module_t const* module, 236 buffer_handle_t handle, int usage, 237 int l, int t, int w, int h, 238 void** vaddr) 239{ 240 private_handle_t* hnd = (private_handle_t*)handle; 241 int err = gralloc_map_and_invalidate(module, handle, usage, l, t, w, h); 242 if(!err) 243 *vaddr = (void*)hnd->base; 244 return err; 245} 246 247int gralloc_lock_ycbcr(gralloc_module_t const* module, 248 buffer_handle_t handle, int usage, 249 int l, int t, int w, int h, 250 struct android_ycbcr *ycbcr) 251{ 252 private_handle_t* hnd = (private_handle_t*)handle; 253 int err = gralloc_map_and_invalidate(module, handle, usage, l, t, w, h); 254 int ystride, cstride; 255 256 memset(ycbcr->reserved, 0, sizeof(ycbcr->reserved)); 257 if(!err) { 258 //hnd->format holds our implementation defined format 259 switch (hnd->format) { 260 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 261 ystride = ALIGN(hnd->width, 16); 262 ycbcr->y = (void*)hnd->base; 263 ycbcr->cr = (void*)(hnd->base + ystride * hnd->height); 264 ycbcr->cb = (void*)(hnd->base + ystride * hnd->height + 1); 265 ycbcr->ystride = ystride; 266 ycbcr->cstride = ystride; 267 ycbcr->chroma_step = 2; 268 break; 269 case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS: 270 ystride = cstride = hnd->width; 271 ycbcr->y = (void*)hnd->base; 272 ycbcr->cb = (void*)(hnd->base + ystride * hnd->height); 273 ycbcr->cr = (void*)(hnd->base + ystride * hnd->height + 1); 274 ycbcr->ystride = ystride; 275 ycbcr->cstride = cstride; 276 ycbcr->chroma_step = 2; 277 break; 278 default: 279 ALOGD("%s: Invalid format passed: 0x%x", __FUNCTION__, 280 hnd->format); 281 err = -EINVAL; 282 } 283 } 284 return err; 285} 286 287int gralloc_unlock(gralloc_module_t const* module, 288 buffer_handle_t handle) 289{ 290 if (private_handle_t::validate(handle) < 0) 291 return -EINVAL; 292 int err = 0; 293 private_handle_t* hnd = (private_handle_t*)handle; 294 295 if (hnd->flags & private_handle_t::PRIV_FLAGS_USES_ION) { 296 IMemAlloc* memalloc = getAllocator(hnd->flags); 297 if (hnd->flags & private_handle_t::PRIV_FLAGS_NEEDS_FLUSH) { 298 err = memalloc->clean_buffer((void*)hnd->base, 299 hnd->size, hnd->offset, hnd->fd, 300 CACHE_CLEAN_AND_INVALIDATE); 301 hnd->flags &= ~private_handle_t::PRIV_FLAGS_NEEDS_FLUSH; 302 } else if(hnd->flags & private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH) { 303 hnd->flags &= ~private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH; 304 } else { 305 //Probably a round about way to do this, but this avoids adding new 306 //flags 307 err = memalloc->clean_buffer((void*)hnd->base, 308 hnd->size, hnd->offset, hnd->fd, 309 CACHE_INVALIDATE); 310 } 311 } 312 313 return err; 314} 315 316/*****************************************************************************/ 317 318int gralloc_perform(struct gralloc_module_t const* module, 319 int operation, ... ) 320{ 321 int res = -EINVAL; 322 va_list args; 323 va_start(args, operation); 324 switch (operation) { 325 case GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER: 326 { 327 int fd = va_arg(args, int); 328 size_t size = va_arg(args, size_t); 329 size_t offset = va_arg(args, size_t); 330 void* base = va_arg(args, void*); 331 int width = va_arg(args, int); 332 int height = va_arg(args, int); 333 int format = va_arg(args, int); 334 335 native_handle_t** handle = va_arg(args, native_handle_t**); 336 int memoryFlags = va_arg(args, int); 337 private_handle_t* hnd = (private_handle_t*)native_handle_create( 338 private_handle_t::sNumFds, private_handle_t::sNumInts); 339 hnd->magic = private_handle_t::sMagic; 340 hnd->fd = fd; 341 hnd->flags = private_handle_t::PRIV_FLAGS_USES_ION; 342 hnd->size = size; 343 hnd->offset = offset; 344 hnd->base = intptr_t(base) + offset; 345 hnd->gpuaddr = 0; 346 hnd->width = width; 347 hnd->height = height; 348 hnd->format = format; 349 *handle = (native_handle_t *)hnd; 350 res = 0; 351 break; 352 353 } 354#ifdef QCOM_BSP 355 case GRALLOC_MODULE_PERFORM_UPDATE_BUFFER_GEOMETRY: 356 { 357 int width = va_arg(args, int); 358 int height = va_arg(args, int); 359 int format = va_arg(args, int); 360 private_handle_t* hnd = va_arg(args, private_handle_t*); 361 if (private_handle_t::validate(hnd)) { 362 return res; 363 } 364 hnd->width = width; 365 hnd->height = height; 366 hnd->format = format; 367 res = 0; 368 } 369 break; 370#endif 371 case GRALLOC_MODULE_PERFORM_GET_STRIDE: 372 { 373 int width = va_arg(args, int); 374 int format = va_arg(args, int); 375 int *stride = va_arg(args, int *); 376 *stride = AdrenoMemInfo::getInstance().getStride(width, format); 377 res = 0; 378 } break; 379 case GRALLOC_MODULE_PERFORM_GET_CUSTOM_STRIDE_FROM_HANDLE: 380 { 381 private_handle_t* hnd = va_arg(args, private_handle_t*); 382 int *stride = va_arg(args, int *); 383 if (private_handle_t::validate(hnd)) { 384 return res; 385 } 386 MetaData_t *metadata = (MetaData_t *)hnd->base_metadata; 387 if(metadata && metadata->operation & UPDATE_BUFFER_GEOMETRY) { 388 *stride = metadata->bufferDim.sliceWidth; 389 } else { 390 *stride = hnd->width; 391 } 392 res = 0; 393 } break; 394 default: 395 break; 396 } 397 va_end(args); 398 return res; 399} 400