Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 2 | #ifndef __NVIF_UNPACK_H__ |
| 3 | #define __NVIF_UNPACK_H__ |
| 4 | |
Ben Skeggs | f01c4e6 | 2015-11-09 09:21:27 +1000 | [diff] [blame] | 5 | #define nvif_unvers(r,d,s,m) ({ \ |
| 6 | void **_data = (d); __u32 *_size = (s); int _ret = (r); \ |
| 7 | if (_ret == -ENOSYS && *_size == sizeof(m)) { \ |
| 8 | *_data = NULL; \ |
| 9 | *_size = _ret = 0; \ |
| 10 | } \ |
| 11 | _ret; \ |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 12 | }) |
| 13 | |
Ben Skeggs | f01c4e6 | 2015-11-09 09:21:27 +1000 | [diff] [blame] | 14 | #define nvif_unpack(r,d,s,m,vl,vh,x) ({ \ |
| 15 | void **_data = (d); __u32 *_size = (s); \ |
| 16 | int _ret = (r), _vl = (vl), _vh = (vh); \ |
| 17 | if (_ret == -ENOSYS && *_size >= sizeof(m) && \ |
| 18 | (m).version >= _vl && (m).version <= _vh) { \ |
| 19 | *_data = (__u8 *)*_data + sizeof(m); \ |
| 20 | *_size = *_size - sizeof(m); \ |
| 21 | if (_ret = 0, !(x)) { \ |
| 22 | _ret = *_size ? -E2BIG : 0; \ |
| 23 | *_data = NULL; \ |
| 24 | *_size = 0; \ |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 25 | } \ |
| 26 | } \ |
Ben Skeggs | f01c4e6 | 2015-11-09 09:21:27 +1000 | [diff] [blame] | 27 | _ret; \ |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 28 | }) |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 29 | #endif |