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 <cutils/trace.h> 40 #include <string> 41 42 #include "gralloc_priv.h" 43 #include "gr_utils.h" 44 #include "gr_ion_alloc.h" 45 46 namespace gralloc1 { 47 48 bool IonAlloc::Init() { 49 if (ion_dev_fd_ == FD_INIT) { 50 ion_dev_fd_ = open(kIonDevice, O_RDONLY); 51 } 52 53 if (ion_dev_fd_ < 0) { 54 ALOGE("%s: Failed to open ion device - %s", __FUNCTION__, strerror(errno)); 55 ion_dev_fd_ = FD_INIT; 56 return false; 57 } 58 59 return true; 60 } 61 62 void IonAlloc::CloseIonDevice() { 63 if (ion_dev_fd_ > FD_INIT) { 64 close(ion_dev_fd_); 65 } 66 67 ion_dev_fd_ = FD_INIT; 68 } 69 70 int IonAlloc::AllocBuffer(AllocData *data) { 71 ATRACE_CALL(); 72 int err = 0; 73 struct ion_handle_data handle_data; 74 struct ion_fd_data fd_data; 75 struct ion_allocation_data ion_alloc_data; 76 77 ion_alloc_data.len = data->size; 78 ion_alloc_data.align = data->align; 79 ion_alloc_data.heap_id_mask = data->heap_id; 80 ion_alloc_data.flags = data->flags; 81 ion_alloc_data.flags |= data->uncached ? 0 : ION_FLAG_CACHED; 82 std::string tag_name{}; 83 if (ATRACE_ENABLED()) { 84 tag_name = "ION_IOC_ALLOC size: " + std::to_string(data->size); 85 } 86 87 ATRACE_BEGIN(tag_name.c_str()); 88 if (ioctl(ion_dev_fd_, INT(ION_IOC_ALLOC), &ion_alloc_data)) { 89 err = -errno; 90 ALOGE("ION_IOC_ALLOC failed with error - %s", strerror(errno)); 91 return err; 92 } 93 ATRACE_END(); 94 95 fd_data.handle = ion_alloc_data.handle; 96 handle_data.handle = ion_alloc_data.handle; 97 ATRACE_BEGIN("ION_IOC_MAP"); 98 if (ioctl(ion_dev_fd_, INT(ION_IOC_MAP), &fd_data)) { 99 err = -errno; 100 ALOGE("%s: ION_IOC_MAP failed with error - %s", __FUNCTION__, strerror(errno)); 101 ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data); 102 return err; 103 } 104 ATRACE_END(); 105 106 data->fd = fd_data.fd; 107 data->ion_handle = handle_data.handle; 108 ALOGD_IF(DEBUG, "ion: Allocated buffer size:%zu fd:%d handle:0x%x", 109 ion_alloc_data.len, data->fd, data->ion_handle); 110 111 return 0; 112 } 113 114 int IonAlloc::FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd, 115 int ion_handle) { 116 ATRACE_CALL(); 117 int err = 0; 118 ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%u fd:%d handle:0x%x", base, size, fd, 119 ion_handle); 120 121 if (base) { 122 err = UnmapBuffer(base, size, offset); 123 } 124 125 if (ion_handle > 0) { 126 struct ion_handle_data handle_data; 127 handle_data.handle = ion_handle; 128 ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data); 129 } 130 close(fd); 131 return err; 132 } 133 134 int IonAlloc::MapBuffer(void **base, unsigned int size, unsigned int offset, int fd) { 135 ATRACE_CALL(); 136 int err = 0; 137 void *addr = 0; 138 139 // It is a (quirky) requirement of ION to have opened the 140 // ion fd in the process that is doing the mapping 141 addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 142 *base = addr; 143 if (addr == MAP_FAILED) { 144 err = -errno; 145 ALOGE("ion: Failed to map memory in the client: %s", strerror(errno)); 146 } else { 147 ALOGD_IF(DEBUG, "ion: Mapped buffer base:%p size:%u offset:%u fd:%d", addr, size, offset, fd); 148 } 149 150 return err; 151 } 152 153 int IonAlloc::ImportBuffer(int fd) { 154 struct ion_fd_data fd_data; 155 int err = 0; 156 fd_data.fd = fd; 157 if (ioctl(ion_dev_fd_, INT(ION_IOC_IMPORT), &fd_data)) { 158 err = -errno; 159 ALOGE("%s: ION_IOC_IMPORT failed with error - %s", __FUNCTION__, strerror(errno)); 160 return err; 161 } 162 return fd_data.handle; 163 } 164 165 int IonAlloc::UnmapBuffer(void *base, unsigned int size, unsigned int /*offset*/) { 166 ATRACE_CALL(); 167 ALOGD_IF(DEBUG, "ion: Unmapping buffer base:%p size:%u", base, size); 168 169 int err = 0; 170 if (munmap(base, size)) { 171 err = -errno; 172 ALOGE("ion: Failed to unmap memory at %p : %s", base, strerror(errno)); 173 } 174 175 return err; 176 } 177 178 int IonAlloc::CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op) { 179 ATRACE_CALL(); 180 ATRACE_INT("operation id", op); 181 struct ion_flush_data flush_data; 182 int err = 0; 183 184 flush_data.handle = handle; 185 flush_data.vaddr = base; 186 // offset and length are unsigned int 187 flush_data.offset = offset; 188 flush_data.length = size; 189 190 struct ion_custom_data d; 191 switch (op) { 192 case CACHE_CLEAN: 193 d.cmd = ION_IOC_CLEAN_CACHES; 194 break; 195 case CACHE_INVALIDATE: 196 d.cmd = ION_IOC_INV_CACHES; 197 break; 198 case CACHE_CLEAN_AND_INVALIDATE: 199 default: 200 d.cmd = ION_IOC_CLEAN_INV_CACHES; 201 } 202 203 d.arg = (unsigned long)(&flush_data); // NOLINT 204 if (ioctl(ion_dev_fd_, INT(ION_IOC_CUSTOM), &d)) { 205 err = -errno; 206 ALOGE("%s: ION_IOC_CLEAN_INV_CACHES failed with error - %s", __FUNCTION__, strerror(errno)); 207 return err; 208 } 209 210 return 0; 211 } 212 213 } // namespace gralloc1 214
