/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* Copyright 2017 IBM Corp .
*
* 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 .
*/
#ifndef _UAPI_LINUX_ASPEED_LPC_CTRL_H
#define _UAPI_LINUX_ASPEED_LPC_CTRL_H
#include <linux/ioctl.h>
#include <linux/types.h>
/* Window types */
#define ASPEED_LPC_CTRL_WINDOW_FLASH 1
#define ASPEED_LPC_CTRL_WINDOW_MEMORY 2
/*
* This driver provides a window for the host to access a BMC resource
* across the BMC < - > Host LPC bus .
*
* window_type : The BMC resource that the host will access through the
* window . BMC flash and BMC RAM .
*
* window_id : For each window type there may be multiple windows ,
* these are referenced by ID .
*
* flags : Reserved for future use , this field is expected to be
* zeroed .
*
* addr : Address on the host LPC bus that the specified window should
* be mapped . This address must be power of two aligned .
*
* offset : Offset into the BMC window that should be mapped to the
* host ( at addr ) . This must be a multiple of size .
*
* size : The size of the mapping . The smallest possible size is 64 K .
* This must be power of two aligned .
*
*/
struct aspeed_lpc_ctrl_mapping {
__u8 window_type;
__u8 window_id;
__u16 flags;
__u32 addr;
__u32 offset;
__u32 size;
};
#define __ASPEED_LPC_CTRL_IOCTL_MAGIC 0 xb2
#define ASPEED_LPC_CTRL_IOCTL_GET_SIZE _IOWR(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \
0 x00, struct aspeed_lpc_ctrl_mapping)
#define ASPEED_LPC_CTRL_IOCTL_MAP _IOW(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \
0 x01, struct aspeed_lpc_ctrl_mapping)
#endif /* _UAPI_LINUX_ASPEED_LPC_CTRL_H */
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