cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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i2o.h (1324B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * IBM ASM Service Processor Device Driver
      4 *
      5 * Copyright (C) IBM Corporation, 2004
      6 *
      7 * Author: Max Asböck <amax@us.ibm.com>
      8 */
      9
     10#pragma pack(1)
     11struct i2o_header {
     12	u8	version;
     13	u8	message_flags;
     14	u16	message_size;
     15	u8	target;
     16	u8	initiator_and_target;
     17	u8	initiator;
     18	u8	function;
     19	u32	initiator_context;
     20};
     21#pragma pack()
     22
     23#define I2O_HEADER_TEMPLATE \
     24      { .version              = 0x01, \
     25	.message_flags        = 0x00, \
     26	.function             = 0xFF, \
     27	.initiator            = 0x00, \
     28	.initiator_and_target = 0x40, \
     29	.target               = 0x00, \
     30	.initiator_context    = 0x0 }
     31
     32#define I2O_MESSAGE_SIZE	0x1000
     33#define I2O_COMMAND_SIZE	(I2O_MESSAGE_SIZE - sizeof(struct i2o_header))
     34
     35#pragma pack(1)
     36struct i2o_message {
     37	struct i2o_header	header;
     38	void			*data;
     39};
     40#pragma pack()
     41
     42static inline unsigned short outgoing_message_size(unsigned int data_size)
     43{
     44	unsigned int size;
     45	unsigned short i2o_size;
     46
     47	if (data_size > I2O_COMMAND_SIZE)
     48		data_size = I2O_COMMAND_SIZE;
     49
     50	size = sizeof(struct i2o_header) + data_size;
     51
     52	i2o_size = size / sizeof(u32);
     53
     54	if (size % sizeof(u32))
     55	       i2o_size++;
     56
     57	return i2o_size;
     58}
     59
     60static inline u32 incoming_data_size(struct i2o_message *i2o_message)
     61{
     62	return (sizeof(u32) * i2o_message->header.message_size);
     63}