Thomas Gleixner | 1a59d1b8 | 2019-05-27 08:55:05 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * IBM ASM Service Processor Device Driver |
| 4 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Copyright (C) IBM Corporation, 2004 |
| 6 | * |
Al Viro | d36b691 | 2011-12-29 17:09:01 -0500 | [diff] [blame] | 7 | * Author: Max Asböck <amax@us.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 *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__ */ |