78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
/*
|
|
* IBM ASM Service Processor Device Driver
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* Copyright (C) IBM Corporation, 2004
|
|
*
|
|
* Author: Max Asböck <amax@us.ibm.com>
|
|
*
|
|
*/
|
|
|
|
#pragma pack(1)
|
|
struct i2o_header {
|
|
u8 version;
|
|
u8 message_flags;
|
|
u16 message_size;
|
|
u8 target;
|
|
u8 initiator_and_target;
|
|
u8 initiator;
|
|
u8 function;
|
|
u32 initiator_context;
|
|
};
|
|
#pragma pack()
|
|
|
|
#define I2O_HEADER_TEMPLATE \
|
|
{ .version = 0x01, \
|
|
.message_flags = 0x00, \
|
|
.function = 0xFF, \
|
|
.initiator = 0x00, \
|
|
.initiator_and_target = 0x40, \
|
|
.target = 0x00, \
|
|
.initiator_context = 0x0 }
|
|
|
|
#define I2O_MESSAGE_SIZE 0x1000
|
|
#define I2O_COMMAND_SIZE (I2O_MESSAGE_SIZE - sizeof(struct i2o_header))
|
|
|
|
#pragma pack(1)
|
|
struct i2o_message {
|
|
struct i2o_header header;
|
|
void *data;
|
|
};
|
|
#pragma pack()
|
|
|
|
static inline unsigned short outgoing_message_size(unsigned int data_size)
|
|
{
|
|
unsigned int size;
|
|
unsigned short i2o_size;
|
|
|
|
if (data_size > I2O_COMMAND_SIZE)
|
|
data_size = I2O_COMMAND_SIZE;
|
|
|
|
size = sizeof(struct i2o_header) + data_size;
|
|
|
|
i2o_size = size / sizeof(u32);
|
|
|
|
if (size % sizeof(u32))
|
|
i2o_size++;
|
|
|
|
return i2o_size;
|
|
}
|
|
|
|
static inline u32 incoming_data_size(struct i2o_message *i2o_message)
|
|
{
|
|
return (sizeof(u32) * i2o_message->header.message_size);
|
|
}
|