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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/drivers/misc/ibmasm/dot_command.h
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/*

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 * IBM ASM Service Processor Device Driver

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 *

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 * This program is free software; you can redistribute it and/or modify

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 * it under the terms of the GNU General Public License as published by

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 * the Free Software Foundation; either version 2 of the License, or

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 * (at your option) any later version.

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 *

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 * This program is distributed in the hope that it will be useful,

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 * but WITHOUT ANY WARRANTY; without even the implied warranty of

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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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 * GNU General Public License for more details.

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 *

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 * You should have received a copy of the GNU General Public License

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 * along with this program; if not, write to the Free Software

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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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 *

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 * Copyright (C) IBM Corporation, 2004

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 *

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 * Author: Max Asb�ck <[email protected]>

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 *

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 */

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#ifndef __DOT_COMMAND_H__

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#define __DOT_COMMAND_H__

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/*

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 * dot commands are the protocol used to communicate with the service

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 * processor.

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 * They consist of header, a command of variable length and data of

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 * variable length.

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 */

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/* dot command types */

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#define sp_write		0

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#define sp_write_next		1

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#define sp_read			2

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#define sp_read_next		3

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#define sp_command_response	4

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#define sp_event		5

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#define sp_heartbeat		6

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#pragma pack(1)

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struct dot_command_header {

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	u8	type;

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	u8	command_size;

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	u16	data_size;

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	u8	status;

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	u8	reserved;

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};

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#pragma pack()

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static inline size_t get_dot_command_size(void *buffer)

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{

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	struct dot_command_header *cmd = (struct dot_command_header *)buffer;

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	return sizeof(struct dot_command_header) + cmd->command_size + cmd->data_size;

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}

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static inline unsigned int get_dot_command_timeout(void *buffer)

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{

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	struct dot_command_header *header = (struct dot_command_header *)buffer;

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	unsigned char *cmd = buffer + sizeof(struct dot_command_header);

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	/* dot commands 6.3.1, 7.1 and 8.x need a longer timeout */

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	if (header->command_size == 3) {

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		if ((cmd[0] == 6) && (cmd[1] == 3) && (cmd[2] == 1))

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			return IBMASM_CMD_TIMEOUT_EXTRA;

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	} else if (header->command_size == 2) {

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		if ((cmd[0] == 7) && (cmd[1] == 1))

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			return IBMASM_CMD_TIMEOUT_EXTRA;

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		if (cmd[0] == 8)

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			return IBMASM_CMD_TIMEOUT_EXTRA;

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	}

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	return IBMASM_CMD_TIMEOUT_NORMAL;

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}

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#endif /* __DOT_COMMAND_H__ */

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