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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* IBM ASM Service Processor Device Driver
*
* 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);
}
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