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 *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