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
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <stdlib.h>
36 #include <sys/ioctl.h>
37 #include <sys/mman.h>
38 #include <sys/stat.h>
39 #include <sys/types.h>
40
41 #include <string>
42
43 #include <log/log.h>
44 #include <utils/Trace.h>
45 #include <cutils/trace.h>
46
47 #include "gralloc_priv.h"
48 #include "gr_utils.h"
49 #include "gr_ion_alloc.h"
50
51 namespace gralloc1 {
52
Init()53 bool IonAlloc::Init() {
54 if (ion_dev_fd_ == FD_INIT) {
55 ion_dev_fd_ = open(kIonDevice, O_RDONLY);
56 }
57
58 if (ion_dev_fd_ < 0) {
59 ALOGE("%s: Failed to open ion device - %s", __FUNCTION__, strerror(errno));
60 ion_dev_fd_ = FD_INIT;
61 return false;
62 }
63
64 return true;
65 }
66
CloseIonDevice()67 void IonAlloc::CloseIonDevice() {
68 if (ion_dev_fd_ > FD_INIT) {
69 close(ion_dev_fd_);
70 }
71
72 ion_dev_fd_ = FD_INIT;
73 }
74
AllocBuffer(AllocData * data)75 int IonAlloc::AllocBuffer(AllocData *data) {
76 ATRACE_CALL();
77 int err = 0;
78 struct ion_handle_data handle_data;
79 struct ion_fd_data fd_data;
80 struct ion_allocation_data ion_alloc_data;
81
82 ion_alloc_data.len = data->size;
83 ion_alloc_data.align = data->align;
84 ion_alloc_data.heap_id_mask = data->heap_id;
85 ion_alloc_data.flags = data->flags;
86 ion_alloc_data.flags |= data->uncached ? 0 : ION_FLAG_CACHED;
87 std::string tag_name{};
88 if (ATRACE_ENABLED()) {
89 tag_name = "ION_IOC_ALLOC size: " + std::to_string(data->size);
90 }
91
92 ATRACE_BEGIN(tag_name.c_str());
93 if (ioctl(ion_dev_fd_, INT(ION_IOC_ALLOC), &ion_alloc_data)) {
94 err = -errno;
95 ALOGE("ION_IOC_ALLOC failed with error - %s", strerror(errno));
96 return err;
97 }
98 ATRACE_END();
99
100 fd_data.handle = ion_alloc_data.handle;
101 handle_data.handle = ion_alloc_data.handle;
102 ATRACE_BEGIN("ION_IOC_MAP");
103 if (ioctl(ion_dev_fd_, INT(ION_IOC_MAP), &fd_data)) {
104 err = -errno;
105 ALOGE("%s: ION_IOC_MAP failed with error - %s", __FUNCTION__, strerror(errno));
106 ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
107 return err;
108 }
109 ATRACE_END();
110
111 data->fd = fd_data.fd;
112 data->ion_handle = handle_data.handle;
113 ALOGD_IF(DEBUG, "ion: Allocated buffer size:%zu fd:%d handle:0x%x",
114 ion_alloc_data.len, data->fd, data->ion_handle);
115
116 return 0;
117 }
118
FreeBuffer(void * base,unsigned int size,unsigned int offset,int fd,int ion_handle)119 int IonAlloc::FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd,
120 int ion_handle) {
121 ATRACE_CALL();
122 int err = 0;
123 ALOGD_IF(DEBUG, "ion: Freeing buffer base:%p size:%u fd:%d handle:0x%x", base, size, fd,
124 ion_handle);
125
126 if (base) {
127 err = UnmapBuffer(base, size, offset);
128 }
129
130 if (ion_handle > 0) {
131 struct ion_handle_data handle_data;
132 handle_data.handle = ion_handle;
133 ioctl(ion_dev_fd_, INT(ION_IOC_FREE), &handle_data);
134 }
135 close(fd);
136 return err;
137 }
138
MapBuffer(void ** base,unsigned int size,unsigned int offset,int fd)139 int IonAlloc::MapBuffer(void **base, unsigned int size, unsigned int offset, int fd) {
140 ATRACE_CALL();
141 int err = 0;
142 void *addr = 0;
143
144 // It is a (quirky) requirement of ION to have opened the
145 // ion fd in the process that is doing the mapping
146 addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
147 *base = addr;
148 if (addr == MAP_FAILED) {
149 err = -errno;
150 ALOGE("ion: Failed to map memory in the client: %s", strerror(errno));
151 } else {
152 ALOGD_IF(DEBUG, "ion: Mapped buffer base:%p size:%u offset:%u fd:%d", addr, size, offset, fd);
153 }
154
155 return err;
156 }
157
ImportBuffer(int fd)158 int IonAlloc::ImportBuffer(int fd) {
159 struct ion_fd_data fd_data;
160 int err = 0;
161 fd_data.fd = fd;
162 if (ioctl(ion_dev_fd_, INT(ION_IOC_IMPORT), &fd_data)) {
163 err = -errno;
164 ALOGE("%s: ION_IOC_IMPORT failed with error - %s", __FUNCTION__, strerror(errno));
165 return err;
166 }
167 return fd_data.handle;
168 }
169
UnmapBuffer(void * base,unsigned int size,unsigned int)170 int IonAlloc::UnmapBuffer(void *base, unsigned int size, unsigned int /*offset*/) {
171 ATRACE_CALL();
172 ALOGD_IF(DEBUG, "ion: Unmapping buffer base:%p size:%u", base, size);
173
174 int err = 0;
175 if (munmap(base, size)) {
176 err = -errno;
177 ALOGE("ion: Failed to unmap memory at %p : %s", base, strerror(errno));
178 }
179
180 return err;
181 }
182
CleanBuffer(void * base,unsigned int size,unsigned int offset,int handle,int op)183 int IonAlloc::CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op) {
184 ATRACE_CALL();
185 ATRACE_INT("operation id", op);
186 struct ion_flush_data flush_data;
187 int err = 0;
188
189 flush_data.handle = handle;
190 flush_data.vaddr = base;
191 // offset and length are unsigned int
192 flush_data.offset = offset;
193 flush_data.length = size;
194
195 struct ion_custom_data d;
196 switch (op) {
197 case CACHE_CLEAN:
198 d.cmd = ION_IOC_CLEAN_CACHES;
199 break;
200 case CACHE_INVALIDATE:
201 d.cmd = ION_IOC_INV_CACHES;
202 break;
203 case CACHE_CLEAN_AND_INVALIDATE:
204 default:
205 d.cmd = ION_IOC_CLEAN_INV_CACHES;
206 }
207
208 d.arg = (unsigned long)(&flush_data); // NOLINT
209 if (ioctl(ion_dev_fd_, INT(ION_IOC_CUSTOM), &d)) {
210 err = -errno;
211 ALOGE("%s: ION_IOC_CLEAN_INV_CACHES failed with error - %s", __FUNCTION__, strerror(errno));
212 return err;
213 }
214
215 return 0;
216 }
217
218 } // namespace gralloc1
219