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a24532f8 RR |
1 | /* |
2 | * Copyright (C) 2016 Broadcom | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * Common header for Broadcom mailbox messages which is shared across | |
9 | * Broadcom SoCs and Broadcom mailbox client drivers. | |
10 | */ | |
11 | ||
12 | #ifndef _LINUX_BRCM_MESSAGE_H_ | |
13 | #define _LINUX_BRCM_MESSAGE_H_ | |
14 | ||
15 | #include <linux/scatterlist.h> | |
16 | ||
17 | enum brcm_message_type { | |
18 | BRCM_MESSAGE_UNKNOWN = 0, | |
19 | BRCM_MESSAGE_SPU, | |
20 | BRCM_MESSAGE_SBA, | |
21 | BRCM_MESSAGE_MAX, | |
22 | }; | |
23 | ||
24 | struct brcm_sba_command { | |
25 | u64 cmd; | |
26 | #define BRCM_SBA_CMD_TYPE_A BIT(0) | |
27 | #define BRCM_SBA_CMD_TYPE_B BIT(1) | |
28 | #define BRCM_SBA_CMD_TYPE_C BIT(2) | |
29 | #define BRCM_SBA_CMD_HAS_RESP BIT(3) | |
30 | #define BRCM_SBA_CMD_HAS_OUTPUT BIT(4) | |
31 | u64 flags; | |
32 | dma_addr_t input; | |
33 | size_t input_len; | |
34 | dma_addr_t resp; | |
35 | size_t resp_len; | |
36 | dma_addr_t output; | |
37 | size_t output_len; | |
38 | }; | |
39 | ||
40 | struct brcm_message { | |
41 | enum brcm_message_type type; | |
42 | union { | |
43 | struct { | |
44 | struct scatterlist *src; | |
45 | struct scatterlist *dst; | |
46 | } spu; | |
47 | struct { | |
48 | struct brcm_sba_command *cmds; | |
49 | unsigned int cmds_count; | |
50 | } sba; | |
51 | }; | |
52 | void *ctx; | |
53 | int error; | |
54 | }; | |
55 | ||
56 | #endif /* _LINUX_BRCM_MESSAGE_H_ */ |