14a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin/* 24a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * ion.c 34a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * 44a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * Memory Allocator functions for ion 54a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * 64a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * Copyright 2011 Google, Inc 74a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * 84a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * Licensed under the Apache License, Version 2.0 (the "License"); 94a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * you may not use this file except in compliance with the License. 104a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * You may obtain a copy of the License at 114a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * 124a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * http://www.apache.org/licenses/LICENSE-2.0 134a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * 144a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * Unless required by applicable law or agreed to in writing, software 154a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * distributed under the License is distributed on an "AS IS" BASIS, 164a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 174a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * See the License for the specific language governing permissions and 184a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin * limitations under the License. 194a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin */ 204a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <errno.h> 214a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <fcntl.h> 224a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <stdio.h> 234a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <sys/ioctl.h> 244a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <sys/mman.h> 254a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <sys/types.h> 264a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 274a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#define LOG_TAG "ion" 284a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <cutils/log.h> 294a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 3080fba10a860e6c7900367a6a9dfd9bbbe5ef2cd2Rebecca Schultz Zavin#include "linux_ion.h" 3180fba10a860e6c7900367a6a9dfd9bbbe5ef2cd2Rebecca Schultz Zavin#include "omap_ion.h" 324a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include "ion.h" 334a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 344a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_open() 354a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 364a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int fd = open("/dev/ion", O_RDWR); 374a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (fd < 0) 384a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("open /dev/ion failed!\n"); 394a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return fd; 404a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 414a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 424a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_close(int fd) 434a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 444a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return close(fd); 454a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 464a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 474a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinstatic int ion_ioctl(int fd, int req, void *arg) 484a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 494a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ioctl(fd, req, arg); 504a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) { 514a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("ioctl %d failed with code %d: %s\n", req, 524a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ret, strerror(errno)); 534a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -errno; 544a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 554a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 564a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 574a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 584a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_alloc(int fd, size_t len, size_t align, unsigned int flags, 594a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_handle **handle) 604a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 614a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret; 624a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_allocation_data data = { 634a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .len = len, 644a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .align = align, 654a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .flags = flags, 664a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 674a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 684a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ret = ion_ioctl(fd, ION_IOC_ALLOC, &data); 694a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 704a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 714a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *handle = data.handle; 724a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 734a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 744a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 754a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_alloc_tiler(int fd, size_t w, size_t h, int fmt, unsigned int flags, 764a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_handle **handle, size_t *stride) 774a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 784a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret; 794a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct omap_ion_tiler_alloc_data alloc_data = { 804a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .w = w, 814a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .h = h, 824a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .fmt = fmt, 834a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .flags = flags, 844a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 854a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 864a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_custom_data custom_data = { 874a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .cmd = OMAP_ION_TILER_ALLOC, 884a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .arg = (unsigned long)(&alloc_data), 894a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 904a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 914a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ret = ion_ioctl(fd, ION_IOC_CUSTOM, &custom_data); 924a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 934a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 944a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *stride = alloc_data.stride; 954a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *handle = alloc_data.handle; 964a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 974a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 984a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 994a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_free(int fd, struct ion_handle *handle) 1004a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1014a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_handle_data data = { 1024a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .handle = handle, 1034a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1044a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ion_ioctl(fd, ION_IOC_FREE, &data); 1054a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 1064a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 1074a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_map(int fd, struct ion_handle *handle, size_t length, int prot, 1084a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int flags, off_t offset, unsigned char **ptr, int *map_fd) 1094a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1104a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_fd_data data = { 1114a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .handle = handle, 1124a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1134a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ion_ioctl(fd, ION_IOC_MAP, &data); 1144a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 1154a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1164a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *map_fd = data.fd; 1174a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (*map_fd < 0) { 1184a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("map ioctl returned negative fd\n"); 1194a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -EINVAL; 1204a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 1214a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *ptr = mmap(NULL, length, prot, flags, *map_fd, offset); 1224a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (*ptr == MAP_FAILED) { 1234a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("mmap failed: %s\n", strerror(errno)); 1244a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -errno; 1254a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 1264a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1274a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 1284a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 1294a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_share(int fd, struct ion_handle *handle, int *share_fd) 1304a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1314a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int map_fd; 1324a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_fd_data data = { 1334a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .handle = handle, 1344a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1354a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ion_ioctl(fd, ION_IOC_SHARE, &data); 1364a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 1374a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1384a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *share_fd = data.fd; 1394a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (*share_fd < 0) { 1404a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("map ioctl returned negative fd\n"); 1414a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -EINVAL; 1424a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 1434a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1444a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 1454a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 1464a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_import(int fd, int share_fd, struct ion_handle **handle) 1474a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1484a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_fd_data data = { 1494a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .fd = share_fd, 1504a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1514a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ion_ioctl(fd, ION_IOC_IMPORT, &data); 1524a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 1534a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1544a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *handle = data.handle; 1554a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1564a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 157