2 * Copyright (C) 2012 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 #include <sys/ioctl.h>
21 #ifndef TIZEN_FEATURE_E3250 /* build env */
22 #include <cutils/log.h>
25 typedef unsigned long ion_handle;
27 struct ion_allocation_data {
30 unsigned int heap_mask;
40 struct ion_handle_data {
44 struct ion_custom_data {
49 #define ION_IOC_MAGIC 'I'
50 #define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
51 #define ION_IOC_FREE _IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
52 #define ION_IOC_MAP _IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
53 #define ION_IOC_SHARE _IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
54 #define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
55 #define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
56 #define ION_IOC_SYNC _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data)
58 struct ion_msync_data {
65 enum ION_EXYNOS_CUSTOM_CMD {
66 ION_EXYNOS_CUSTOM_MSYNC
69 ion_client ion_client_create(void)
71 return open("/dev/ion", O_RDWR);
74 void ion_client_destroy(ion_client client)
79 ion_buffer ion_alloc(ion_client client, size_t len, size_t align,
80 unsigned int heap_mask, unsigned int flags)
83 struct ion_handle_data arg_free;
84 struct ion_fd_data arg_share;
85 struct ion_allocation_data arg_alloc;
88 arg_alloc.align = align;
89 arg_alloc.heap_mask = heap_mask;
90 arg_alloc.flags = flags;
92 ret = ioctl(client, ION_IOC_ALLOC, &arg_alloc);
96 arg_share.handle = arg_alloc.handle;
97 ret = ioctl(client, ION_IOC_SHARE, &arg_share);
99 arg_free.handle = arg_alloc.handle;
100 ioctl(client, ION_IOC_FREE, &arg_free);
108 void ion_free(ion_buffer buffer)
113 void *ion_map(ion_buffer buffer, size_t len, off_t offset)
115 return mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED,
119 int ion_unmap(void *addr, size_t len)
121 return munmap(addr, len);
124 int ion_sync(ion_client client, ion_buffer buffer)
126 struct ion_fd_data data;
130 return ioctl(client, ION_IOC_SYNC, &data);