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
Init()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
CloseIonDevice()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
AllocBuffer(AllocData * data)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
FreeBuffer(void * base,unsigned int size,unsigned int offset,int fd,int ion_handle)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
MapBuffer(void ** base,unsigned int size,unsigned int offset,int fd)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
ImportBuffer(int fd)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
UnmapBuffer(void * base,unsigned int size,unsigned int)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
CleanBuffer(void * base,unsigned int size,unsigned int offset,int handle,int op)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