/* 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); }