1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * IBM ASM Service Processor Device Driver |
4 | * |
5 | * Copyright (C) IBM Corporation, 2004 |
6 | * |
7 | * Author: Max Asböck <amax@us.ibm.com> |
8 | */ |
9 | |
10 | #ifndef __DOT_COMMAND_H__ |
11 | #define __DOT_COMMAND_H__ |
12 | |
13 | /* |
14 | * dot commands are the protocol used to communicate with the service |
15 | * processor. |
16 | * They consist of header, a command of variable length and data of |
17 | * variable length. |
18 | */ |
19 | |
20 | /* dot command types */ |
21 | #define sp_write 0 |
22 | #define sp_write_next 1 |
23 | #define sp_read 2 |
24 | #define sp_read_next 3 |
25 | #define sp_command_response 4 |
26 | #define sp_event 5 |
27 | #define sp_heartbeat 6 |
28 | |
29 | #pragma pack(1) |
30 | struct dot_command_header { |
31 | u8 type; |
32 | u8 command_size; |
33 | u16 data_size; |
34 | u8 status; |
35 | u8 reserved; |
36 | }; |
37 | #pragma pack() |
38 | |
39 | static inline size_t get_dot_command_size(void *buffer) |
40 | { |
41 | struct dot_command_header *cmd = (struct dot_command_header *)buffer; |
42 | return sizeof(struct dot_command_header) + cmd->command_size + cmd->data_size; |
43 | } |
44 | |
45 | static inline unsigned int get_dot_command_timeout(void *buffer) |
46 | { |
47 | struct dot_command_header * = (struct dot_command_header *)buffer; |
48 | unsigned char *cmd = buffer + sizeof(struct dot_command_header); |
49 | |
50 | /* dot commands 6.3.1, 7.1 and 8.x need a longer timeout */ |
51 | |
52 | if (header->command_size == 3) { |
53 | if ((cmd[0] == 6) && (cmd[1] == 3) && (cmd[2] == 1)) |
54 | return IBMASM_CMD_TIMEOUT_EXTRA; |
55 | } else if (header->command_size == 2) { |
56 | if ((cmd[0] == 7) && (cmd[1] == 1)) |
57 | return IBMASM_CMD_TIMEOUT_EXTRA; |
58 | if (cmd[0] == 8) |
59 | return IBMASM_CMD_TIMEOUT_EXTRA; |
60 | } |
61 | return IBMASM_CMD_TIMEOUT_NORMAL; |
62 | } |
63 | |
64 | #endif /* __DOT_COMMAND_H__ */ |
65 | |