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 */ 201dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen#define LOG_TAG "ion" 211dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen 221dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen#include <cutils/log.h> 234a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <errno.h> 244a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <fcntl.h> 254a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <stdio.h> 264a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <sys/ioctl.h> 274a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <sys/mman.h> 284a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin#include <sys/types.h> 294a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 301dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen#include <linux/ion.h> 311dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen#include <ion/ion.h> 324a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 334a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_open() 344a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 354a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int fd = open("/dev/ion", O_RDWR); 364a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (fd < 0) 374a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("open /dev/ion failed!\n"); 384a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return fd; 394a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 404a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 414a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_close(int fd) 424a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 434a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return close(fd); 444a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 454a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 464a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinstatic int ion_ioctl(int fd, int req, void *arg) 474a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 484a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ioctl(fd, req, arg); 494a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) { 504a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("ioctl %d failed with code %d: %s\n", req, 514a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ret, strerror(errno)); 524a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -errno; 534a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 544a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 554a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 564a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 571dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chenint ion_alloc(int fd, size_t len, size_t align, 581dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen unsigned int flags, struct ion_handle **handle) 594a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 604a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret; 614a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_allocation_data data = { 624a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .len = len, 634a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .align = align, 644a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .flags = flags, 654a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 664a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 674a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ret = ion_ioctl(fd, ION_IOC_ALLOC, &data); 684a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 694a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 704a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *handle = data.handle; 714a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 724a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 734a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 744a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_alloc_tiler(int fd, size_t w, size_t h, int fmt, unsigned int flags, 754a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_handle **handle, size_t *stride) 764a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 774a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret; 784a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct omap_ion_tiler_alloc_data alloc_data = { 794a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .w = w, 804a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .h = h, 814a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .fmt = fmt, 824a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .flags = flags, 831dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .out_align = PAGE_SIZE, 841dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .token = 0, 854a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 864a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 874a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_custom_data custom_data = { 884a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .cmd = OMAP_ION_TILER_ALLOC, 894a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .arg = (unsigned long)(&alloc_data), 904a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 914a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 924a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ret = ion_ioctl(fd, ION_IOC_CUSTOM, &custom_data); 934a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 944a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 954a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *stride = alloc_data.stride; 964a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *handle = alloc_data.handle; 974a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 984a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 994a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 1004a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_free(int fd, struct ion_handle *handle) 1014a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1024a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_handle_data data = { 1034a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .handle = handle, 1044a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1054a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ion_ioctl(fd, ION_IOC_FREE, &data); 1064a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 1074a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 1084a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_map(int fd, struct ion_handle *handle, size_t length, int prot, 1094a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int flags, off_t offset, unsigned char **ptr, int *map_fd) 1104a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1114a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_fd_data data = { 1124a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .handle = handle, 1134a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1144a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ion_ioctl(fd, ION_IOC_MAP, &data); 1154a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 1164a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1174a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *map_fd = data.fd; 1184a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (*map_fd < 0) { 1194a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("map ioctl returned negative fd\n"); 1204a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -EINVAL; 1214a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 1224a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *ptr = mmap(NULL, length, prot, flags, *map_fd, offset); 1234a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (*ptr == MAP_FAILED) { 1244a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("mmap failed: %s\n", strerror(errno)); 1254a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -errno; 1264a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 1274a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1284a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 1294a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 1304a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_share(int fd, struct ion_handle *handle, int *share_fd) 1314a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1324a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int map_fd; 1334a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_fd_data data = { 1344a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .handle = handle, 1354a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1364a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ion_ioctl(fd, ION_IOC_SHARE, &data); 1374a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 1384a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1394a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *share_fd = data.fd; 1404a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (*share_fd < 0) { 1414a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin ALOGE("map ioctl returned negative fd\n"); 1424a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return -EINVAL; 1434a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin } 1444a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1454a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 1464a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin 1474a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavinint ion_import(int fd, int share_fd, struct ion_handle **handle) 1484a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin{ 1494a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin struct ion_fd_data data = { 1504a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin .fd = share_fd, 1514a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin }; 1524a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin int ret = ion_ioctl(fd, ION_IOC_IMPORT, &data); 1534a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin if (ret < 0) 1544a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1554a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin *handle = data.handle; 1564a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin return ret; 1574a35937fcb950ccd05af56c49214b88e393233e3Rebecca Schultz Zavin} 1581dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen 1591dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen#if 0 1601dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chenint ion_sync_fd(int fd, int handle_fd) 1611dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen{ 1621dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen struct ion_fd_data data = { 1631dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .fd = handle_fd, 1641dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen }; 1651dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen return ion_ioctl(fd, ION_IOC_SYNC, &data); 1661dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen} 1671dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen#endif 1681dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen 1691dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chenint ion_map_cacheable(int fd, struct ion_handle *handle, size_t length, int prot, 1701dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen int flags, off_t offset, unsigned char **ptr, int *map_fd) 1711dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen{ 1721dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen struct ion_fd_data data = { 1731dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .handle = handle, 1741dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .cacheable = 1, 1751dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen }; 1761dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen int ret = ion_ioctl(fd, ION_IOC_MAP, &data); 1771dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen if (ret < 0) 1781dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen return ret; 1791dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen *map_fd = data.fd; 1801dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen if (*map_fd < 0) { 1811dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen ALOGE("map ioctl returned negative fd\n"); 1821dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen return -EINVAL; 1831dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen } 1841dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen *ptr = mmap(NULL, length, prot, flags, *map_fd, offset); 1851dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen if (*ptr == MAP_FAILED) { 1861dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen ALOGE("mmap failed: %s\n", strerror(errno)); 1871dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen return -errno; 1881dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen } 1891dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen return ret; 1901dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen} 1911dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen 1921dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chenint ion_flush_cached(int fd, struct ion_handle *handle, size_t length, 1931dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen unsigned char *ptr) 1941dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen{ 1951dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen struct ion_cached_user_buf_data data = { 1961dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .handle = handle, 1971dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .vaddr = (unsigned long)ptr, 1981dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .size = length, 1991dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen }; 2001dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen return ion_ioctl(fd, ION_IOC_FLUSH_CACHED, &data); 2011dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen} 2021dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen 2031dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chenint ion_inval_cached(int fd, struct ion_handle *handle, size_t length, 2041dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen unsigned char *ptr) 2051dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen{ 2061dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen struct ion_cached_user_buf_data data = { 2071dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .handle = handle, 2081dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .vaddr = (unsigned long)ptr, 2091dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen .size = length, 2101dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen }; 2111dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen return ion_ioctl(fd, ION_IOC_INVAL_CACHED, &data); 2121dac52160a4c982fbe3e08b633f5e24171bee2d8Mike J. Chen} 213