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 44 using namespace gralloc; 45 /*****************************************************************************/ 46 47 // Return the type of allocator - 48 // these are used for mapping/unmapping 49 static 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 57 static 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 91 static 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 /*****************************************************************************/ 121 122 static pthread_mutex_t sMapLock = PTHREAD_MUTEX_INITIALIZER; 123 124 /*****************************************************************************/ 125 126 int 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 } 152 153 int 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 } 174 175 int 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 } 199 200 static 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 } 234 235 int 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 } 246 247 int 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; 255 if(!err) { 256 //hnd->format holds our implementation defined format 257 //HAL_PIXEL_FORMAT_YCrCb_420_SP is the only one set right now. 258 switch (hnd->format) { 259 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 260 ystride = ALIGN(hnd->width, 16); 261 ycbcr->y = (void*)hnd->base; 262 ycbcr->cr = (void*)(hnd->base + ystride * hnd->height); 263 ycbcr->cb = (void*)(hnd->base + ystride * hnd->height + 1); 264 ycbcr->ystride = ystride; 265 ycbcr->cstride = ystride; 266 ycbcr->chroma_step = 2; 267 memset(ycbcr->reserved, 0, sizeof(ycbcr->reserved)); 268 break; 269 default: 270 ALOGD("%s: Invalid format passed: 0x%x", __FUNCTION__, 271 hnd->format); 272 err = -EINVAL; 273 } 274 } 275 return err; 276 } 277 278 int gralloc_unlock(gralloc_module_t const* module, 279 buffer_handle_t handle) 280 { 281 if (private_handle_t::validate(handle) < 0) 282 return -EINVAL; 283 int err = 0; 284 private_handle_t* hnd = (private_handle_t*)handle; 285 286 if (hnd->flags & private_handle_t::PRIV_FLAGS_USES_ION) { 287 IMemAlloc* memalloc = getAllocator(hnd->flags); 288 if (hnd->flags & private_handle_t::PRIV_FLAGS_NEEDS_FLUSH) { 289 err = memalloc->clean_buffer((void*)hnd->base, 290 hnd->size, hnd->offset, hnd->fd, 291 CACHE_CLEAN_AND_INVALIDATE); 292 hnd->flags &= ~private_handle_t::PRIV_FLAGS_NEEDS_FLUSH; 293 } else if(hnd->flags & private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH) { 294 hnd->flags &= ~private_handle_t::PRIV_FLAGS_DO_NOT_FLUSH; 295 } else { 296 //Probably a round about way to do this, but this avoids adding new 297 //flags 298 err = memalloc->clean_buffer((void*)hnd->base, 299 hnd->size, hnd->offset, hnd->fd, 300 CACHE_INVALIDATE); 301 } 302 } 303 304 return err; 305 } 306 307 /*****************************************************************************/ 308 309 int gralloc_perform(struct gralloc_module_t const* module, 310 int operation, ... ) 311 { 312 int res = -EINVAL; 313 va_list args; 314 va_start(args, operation); 315 switch (operation) { 316 case GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER: 317 { 318 int fd = va_arg(args, int); 319 size_t size = va_arg(args, size_t); 320 size_t offset = va_arg(args, size_t); 321 void* base = va_arg(args, void*); 322 int width = va_arg(args, int); 323 int height = va_arg(args, int); 324 int format = va_arg(args, int); 325 326 native_handle_t** handle = va_arg(args, native_handle_t**); 327 int memoryFlags = va_arg(args, int); 328 private_handle_t* hnd = (private_handle_t*)native_handle_create( 329 private_handle_t::sNumFds, private_handle_t::sNumInts); 330 hnd->magic = private_handle_t::sMagic; 331 hnd->fd = fd; 332 hnd->flags = private_handle_t::PRIV_FLAGS_USES_ION; 333 hnd->size = size; 334 hnd->offset = offset; 335 hnd->base = intptr_t(base) + offset; 336 hnd->gpuaddr = 0; 337 hnd->width = width; 338 hnd->height = height; 339 hnd->format = format; 340 *handle = (native_handle_t *)hnd; 341 res = 0; 342 break; 343 344 } 345 #ifdef QCOM_BSP 346 case GRALLOC_MODULE_PERFORM_UPDATE_BUFFER_GEOMETRY: 347 { 348 int width = va_arg(args, int); 349 int height = va_arg(args, int); 350 int format = va_arg(args, int); 351 private_handle_t* hnd = va_arg(args, private_handle_t*); 352 if (private_handle_t::validate(hnd)) { 353 return res; 354 } 355 hnd->width = width; 356 hnd->height = height; 357 hnd->format = format; 358 res = 0; 359 } 360 break; 361 #endif 362 case GRALLOC_MODULE_PERFORM_GET_STRIDE: 363 { 364 int width = va_arg(args, int); 365 int format = va_arg(args, int); 366 int *stride = va_arg(args, int *); 367 *stride = AdrenoMemInfo::getInstance().getStride(width, format); 368 res = 0; 369 } break; 370 case GRALLOC_MODULE_PERFORM_GET_CUSTOM_STRIDE_FROM_HANDLE: 371 { 372 private_handle_t* hnd = va_arg(args, private_handle_t*); 373 int *stride = va_arg(args, int *); 374 if (private_handle_t::validate(hnd)) { 375 return res; 376 } 377 MetaData_t *metadata = (MetaData_t *)hnd->base_metadata; 378 if(metadata && metadata->operation & UPDATE_BUFFER_GEOMETRY) { 379 *stride = metadata->bufferDim.sliceWidth; 380 } else { 381 *stride = hnd->width; 382 } 383 res = 0; 384 } break; 385 default: 386 break; 387 } 388 va_end(args); 389 return res; 390 } 391
