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1efd54ea AP |
1 | /* |
2 | * u_f.h | |
3 | * | |
4 | * Utility definitions for USB functions | |
5 | * | |
6 | * Copyright (c) 2013 Samsung Electronics Co., Ltd. | |
7 | * http://www.samsung.com | |
8 | * | |
9 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | ||
16 | #ifndef __U_F_H__ | |
17 | #define __U_F_H__ | |
18 | ||
74d48466 AP |
19 | /* Variable Length Array Macros **********************************************/ |
20 | #define vla_group(groupname) size_t groupname##__next = 0 | |
21 | #define vla_group_size(groupname) groupname##__next | |
22 | ||
23 | #define vla_item(groupname, type, name, n) \ | |
24 | size_t groupname##_##name##__offset = ({ \ | |
25 | size_t align_mask = __alignof__(type) - 1; \ | |
26 | size_t offset = (groupname##__next + align_mask) & ~align_mask;\ | |
27 | size_t size = (n) * sizeof(type); \ | |
28 | groupname##__next = offset + size; \ | |
29 | offset; \ | |
30 | }) | |
31 | ||
32 | #define vla_item_with_sz(groupname, type, name, n) \ | |
33 | size_t groupname##_##name##__sz = (n) * sizeof(type); \ | |
34 | size_t groupname##_##name##__offset = ({ \ | |
35 | size_t align_mask = __alignof__(type) - 1; \ | |
36 | size_t offset = (groupname##__next + align_mask) & ~align_mask;\ | |
37 | size_t size = groupname##_##name##__sz; \ | |
38 | groupname##__next = offset + size; \ | |
39 | offset; \ | |
40 | }) | |
41 | ||
42 | #define vla_ptr(ptr, groupname, name) \ | |
43 | ((void *) ((char *)ptr + groupname##_##name##__offset)) | |
44 | ||
1efd54ea AP |
45 | struct usb_ep; |
46 | struct usb_request; | |
47 | ||
48 | struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len); | |
49 | ||
50 | #endif /* __U_F_H__ */ | |
51 | ||
52 |