78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
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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 Asböck <amax@us.ibm.com>
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*
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*/
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#pragma pack(1)
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struct i2o_header {
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u8 version;
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u8 message_flags;
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u16 message_size;
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u8 target;
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u8 initiator_and_target;
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u8 initiator;
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u8 function;
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u32 initiator_context;
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};
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#pragma pack()
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#define I2O_HEADER_TEMPLATE \
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{ .version = 0x01, \
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.message_flags = 0x00, \
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.function = 0xFF, \
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.initiator = 0x00, \
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.initiator_and_target = 0x40, \
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.target = 0x00, \
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.initiator_context = 0x0 }
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#define I2O_MESSAGE_SIZE 0x1000
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#define I2O_COMMAND_SIZE (I2O_MESSAGE_SIZE - sizeof(struct i2o_header))
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#pragma pack(1)
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struct i2o_message {
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struct i2o_header header;
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void *data;
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};
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#pragma pack()
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static inline unsigned short outgoing_message_size(unsigned int data_size)
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{
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unsigned int size;
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unsigned short i2o_size;
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if (data_size > I2O_COMMAND_SIZE)
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data_size = I2O_COMMAND_SIZE;
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size = sizeof(struct i2o_header) + data_size;
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i2o_size = size / sizeof(u32);
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if (size % sizeof(u32))
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i2o_size++;
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return i2o_size;
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}
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static inline u32 incoming_data_size(struct i2o_message *i2o_message)
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{
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return (sizeof(u32) * i2o_message->header.message_size);
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}
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