Colin Cross | dd6770b | 2013-12-18 15:39:27 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * drivers/staging/android/uapi/ion.h |
| 3 | * |
| 4 | * Copyright (C) 2011 Google, Inc. |
| 5 | * |
| 6 | * This software is licensed under the terms of the GNU General Public |
| 7 | * License version 2, as published by the Free Software Foundation, and |
| 8 | * may be copied, distributed, and modified under those terms. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #ifndef _UAPI_LINUX_ION_TEST_H |
| 18 | #define _UAPI_LINUX_ION_TEST_H |
| 19 | |
| 20 | #include <linux/ioctl.h> |
| 21 | #include <linux/types.h> |
| 22 | |
| 23 | /** |
| 24 | * struct ion_test_rw_data - metadata passed to the kernel to read handle |
| 25 | * @ptr: a pointer to an area at least as large as size |
| 26 | * @offset: offset into the ion buffer to start reading |
| 27 | * @size: size to read or write |
| 28 | * @write: 1 to write, 0 to read |
| 29 | */ |
| 30 | struct ion_test_rw_data { |
| 31 | __u64 ptr; |
| 32 | __u64 offset; |
| 33 | __u64 size; |
| 34 | int write; |
| 35 | }; |
| 36 | |
| 37 | #define ION_IOC_MAGIC 'I' |
| 38 | |
| 39 | /** |
| 40 | * DOC: ION_IOC_TEST_SET_DMA_BUF - attach a dma buf to the test driver |
| 41 | * |
| 42 | * Attaches a dma buf fd to the test driver. Passing a second fd or -1 will |
| 43 | * release the first fd. |
| 44 | */ |
| 45 | #define ION_IOC_TEST_SET_FD \ |
| 46 | _IO(ION_IOC_MAGIC, 0xf0) |
| 47 | |
| 48 | /** |
| 49 | * DOC: ION_IOC_TEST_DMA_MAPPING - read or write memory from a handle as DMA |
| 50 | * |
| 51 | * Reads or writes the memory from a handle using an uncached mapping. Can be |
| 52 | * used by unit tests to emulate a DMA engine as close as possible. Only |
| 53 | * expected to be used for debugging and testing, may not always be available. |
| 54 | */ |
| 55 | #define ION_IOC_TEST_DMA_MAPPING \ |
| 56 | _IOW(ION_IOC_MAGIC, 0xf1, struct ion_test_rw_data) |
| 57 | |
| 58 | /** |
| 59 | * DOC: ION_IOC_TEST_KERNEL_MAPPING - read or write memory from a handle |
| 60 | * |
| 61 | * Reads or writes the memory from a handle using a kernel mapping. Can be |
| 62 | * used by unit tests to test heap map_kernel functions. Only expected to be |
| 63 | * used for debugging and testing, may not always be available. |
| 64 | */ |
| 65 | #define ION_IOC_TEST_KERNEL_MAPPING \ |
| 66 | _IOW(ION_IOC_MAGIC, 0xf2, struct ion_test_rw_data) |
| 67 | |
| 68 | |
| 69 | #endif /* _UAPI_LINUX_ION_H */ |