1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (C) 2016 Broadcom |
4 | * |
5 | * Common header for Broadcom mailbox messages which is shared across |
6 | * Broadcom SoCs and Broadcom mailbox client drivers. |
7 | */ |
8 | |
9 | #ifndef _LINUX_BRCM_MESSAGE_H_ |
10 | #define _LINUX_BRCM_MESSAGE_H_ |
11 | |
12 | #include <linux/scatterlist.h> |
13 | |
14 | enum brcm_message_type { |
15 | BRCM_MESSAGE_UNKNOWN = 0, |
16 | BRCM_MESSAGE_BATCH, |
17 | BRCM_MESSAGE_SPU, |
18 | BRCM_MESSAGE_SBA, |
19 | BRCM_MESSAGE_MAX, |
20 | }; |
21 | |
22 | struct brcm_sba_command { |
23 | u64 cmd; |
24 | u64 *cmd_dma; |
25 | dma_addr_t cmd_dma_addr; |
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 resp; |
33 | size_t resp_len; |
34 | dma_addr_t data; |
35 | size_t data_len; |
36 | }; |
37 | |
38 | struct brcm_message { |
39 | enum brcm_message_type type; |
40 | union { |
41 | struct { |
42 | struct brcm_message *msgs; |
43 | unsigned int msgs_queued; |
44 | unsigned int msgs_count; |
45 | } batch; |
46 | struct { |
47 | struct scatterlist *src; |
48 | struct scatterlist *dst; |
49 | } spu; |
50 | struct { |
51 | struct brcm_sba_command *cmds; |
52 | unsigned int cmds_count; |
53 | } sba; |
54 | }; |
55 | void *ctx; |
56 | int error; |
57 | }; |
58 | |
59 | #endif /* _LINUX_BRCM_MESSAGE_H_ */ |
60 | |