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 #define DEBUG 0 31 #define ATRACE_TAG (ATRACE_TAG_GRAPHICS | ATRACE_TAG_HAL) 32 #include <sys/ioctl.h> 33 #include <sys/mman.h> 34 #include <stdlib.h> 35 #include <fcntl.h> 36 #include <cutils/log.h> 37 #include <errno.h> 38 #include <utils/Trace.h> 39 #include <string.h> 40 41 #include "gralloc_priv.h" 42 #include "gr_utils.h" 43 #include "gr_ion_alloc.h" 44 45 namespace gralloc1 { 46 47 bool IonAlloc::Init() { 48 if (ion_dev_fd_ == FD_INIT) { 49 ion_dev_fd_ = open(kIonDevice, O_RDONLY); 50 } 51 52 if (ion_dev_fd_ < 0) { 53 ALOGE("%s: Failed to open ion device - %s", __FUNCTION__, strerror(errno)); 54 ion_dev_fd_ = FD_INIT; 55 return false; 56 } 57 58 return true; 59 } 60 61 void IonAlloc::CloseIonDevice() { 62 if (ion_dev_fd_ > FD_INIT) { 63 close(ion_dev_fd_); 64 } 65 66 ion_dev_fd_ = FD_INIT; 67 } 68 69 int IonAlloc::AllocBuffer(AllocData *data) { 70 ATRACE_CALL(); 71 int err = 0; 72 struct ion_handle_data handle_data; 73 struct ion_fd_data fd_data; 74 struct ion_allocation_data ion_alloc_data; 75 76 ion_alloc_data.len = data->size; 77 ion_alloc_data.align = data->align; 78 ion_alloc_data.heap_id_mask = data->heap_id; 79 ion_alloc_data.flags = data->flags; 80 ion_alloc_data.flags |= data->uncached ? 0 : ION_FLAG_CACHED; 81 82 if (ioctl(ion_dev_fd_, INT(ION_IOC_ALLOC), &ion_alloc_data)) { 83 err = -errno; 84 ALOGE("ION_IOC_ALLOC failed with error - %s", strerror(errno)); 85 return err; 86 } 87 88 fd_data.handle = ion_alloc_data.handle; 89 handle_data.handle = ion_alloc_data.handle; 90 if (ioctl(ion_dev_fd_, INT(ION_IOC_MAP), &fd_data)) { 91 err = -errno; 92 ALOGE("%s: ION_IOC_MAP failed with error - %s", __FUNCTION__, strerror(errno)); 93 ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data); 94 return err; 95 } 96 97 data->fd = fd_data.fd; 98 data->ion_handle = handle_data.handle; 99 ALOGD_IF(DEBUG, "ion: Allocated buffer size:%zu fd:%d handle:0x%x", 100 ion_alloc_data.len, data->fd, data->ion_handle); 101 102 return 0; 103 } 104 105 int IonAlloc::FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd, 106 int ion_handle) { 107 ATRACE_CALL(); 108 int err = 0; 109 ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%u fd:%d handle:0x%x", base, size, fd, 110 ion_handle); 111 112 if (base) { 113 err = UnmapBuffer(base, size, offset); 114 } 115 116 if (ion_handle > 0) { 117 struct ion_handle_data handle_data; 118 handle_data.handle = ion_handle; 119 ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data); 120 } 121 close(fd); 122 return err; 123 } 124 125 int IonAlloc::MapBuffer(void **base, unsigned int size, unsigned int offset, int fd) { 126 ATRACE_CALL(); 127 int err = 0; 128 void *addr = 0; 129 130 // It is a (quirky) requirement of ION to have opened the 131 // ion fd in the process that is doing the mapping 132 addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 133 *base = addr; 134 if (addr == MAP_FAILED) { 135 err = -errno; 136 ALOGE("ion: Failed to map memory in the client: %s", strerror(errno)); 137 } else { 138 ALOGD_IF(DEBUG, "ion: Mapped buffer base:%p size:%u offset:%u fd:%d", addr, size, offset, fd); 139 } 140 141 return err; 142 } 143 144 int IonAlloc::ImportBuffer(int fd) { 145 struct ion_fd_data fd_data; 146 int err = 0; 147 fd_data.fd = fd; 148 if (ioctl(ion_dev_fd_, INT(ION_IOC_IMPORT), &fd_data)) { 149 err = -errno; 150 ALOGE("%s: ION_IOC_IMPORT failed with error - %s", __FUNCTION__, strerror(errno)); 151 return err; 152 } 153 return fd_data.handle; 154 } 155 156 int IonAlloc::UnmapBuffer(void *base, unsigned int size, unsigned int /*offset*/) { 157 ATRACE_CALL(); 158 ALOGD_IF(DEBUG, "ion: Unmapping buffer base:%p size:%u", base, size); 159 160 int err = 0; 161 if (munmap(base, size)) { 162 err = -errno; 163 ALOGE("ion: Failed to unmap memory at %p : %s", base, strerror(errno)); 164 } 165 166 return err; 167 } 168 169 int IonAlloc::CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op) { 170 ATRACE_CALL(); 171 ATRACE_INT("operation id", op); 172 struct ion_flush_data flush_data; 173 int err = 0; 174 175 flush_data.handle = handle; 176 flush_data.vaddr = base; 177 // offset and length are unsigned int 178 flush_data.offset = offset; 179 flush_data.length = size; 180 181 struct ion_custom_data d; 182 switch (op) { 183 case CACHE_CLEAN: 184 d.cmd = ION_IOC_CLEAN_CACHES; 185 break; 186 case CACHE_INVALIDATE: 187 d.cmd = ION_IOC_INV_CACHES; 188 break; 189 case CACHE_CLEAN_AND_INVALIDATE: 190 default: 191 d.cmd = ION_IOC_CLEAN_INV_CACHES; 192 } 193 194 d.arg = (unsigned long)(&flush_data); // NOLINT 195 if (ioctl(ion_dev_fd_, INT(ION_IOC_CUSTOM), &d)) { 196 err = -errno; 197 ALOGE("%s: ION_IOC_CLEAN_INV_CACHES failed with error - %s", __FUNCTION__, strerror(errno)); 198 return err; 199 } 200 201 return 0; 202 } 203 204 } // namespace gralloc1 205
