1/*
2 * IBM ASM Service Processor Device Driver
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 as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * Copyright (C) IBM Corporation, 2004
19 *
20 * Author: Max Asböck <amax@us.ibm.com>
21 *
22 */
23
24#ifndef __DOT_COMMAND_H__
25#define __DOT_COMMAND_H__
26
27/*
28 * dot commands are the protocol used to communicate with the service
29 * processor.
30 * They consist of header, a command of variable length and data of
31 * variable length.
32 */
33
34/* dot command types */
35#define sp_write		0
36#define sp_write_next		1
37#define sp_read			2
38#define sp_read_next		3
39#define sp_command_response	4
40#define sp_event		5
41#define sp_heartbeat		6
42
43#pragma pack(1)
44struct dot_command_header {
45	u8	type;
46	u8	command_size;
47	u16	data_size;
48	u8	status;
49	u8	reserved;
50};
51#pragma pack()
52
53static inline size_t get_dot_command_size(void *buffer)
54{
55	struct dot_command_header *cmd = (struct dot_command_header *)buffer;
56	return sizeof(struct dot_command_header) + cmd->command_size + cmd->data_size;
57}
58
59static inline unsigned int get_dot_command_timeout(void *buffer)
60{
61	struct dot_command_header *header = (struct dot_command_header *)buffer;
62	unsigned char *cmd = buffer + sizeof(struct dot_command_header);
63
64	/* dot commands 6.3.1, 7.1 and 8.x need a longer timeout */
65
66	if (header->command_size == 3) {
67		if ((cmd[0] == 6) && (cmd[1] == 3) && (cmd[2] == 1))
68			return IBMASM_CMD_TIMEOUT_EXTRA;
69	} else if (header->command_size == 2) {
70		if ((cmd[0] == 7) && (cmd[1] == 1))
71			return IBMASM_CMD_TIMEOUT_EXTRA;
72		if (cmd[0] == 8)
73			return IBMASM_CMD_TIMEOUT_EXTRA;
74	}
75	return IBMASM_CMD_TIMEOUT_NORMAL;
76}
77
78#endif /* __DOT_COMMAND_H__ */
79