The C and C++ Include Header Files

/usr/include/linux/aspeed-lpc-ctrl.h


$ cat -n /usr/include/linux/aspeed-lpc-ctrl.h

     1	/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
     2	/*
     3	 * Copyright 2017 IBM Corp.
     4	 *
     5	 * This program is free software; you can redistribute it and/or
     6	 * modify it under the terms of the GNU General Public License
     7	 * as published by the Free Software Foundation; either version
     8	 * 2 of the License, or (at your option) any later version.
     9	 */
    10	
    11	#ifndef _LINUX_ASPEED_LPC_CTRL_H
    12	#define _LINUX_ASPEED_LPC_CTRL_H
    13	
    14	#include <linux/ioctl.h>
    15	#include <linux/types.h>
    16	
    17	/* Window types */
    18	#define ASPEED_LPC_CTRL_WINDOW_FLASH	1
    19	#define ASPEED_LPC_CTRL_WINDOW_MEMORY	2
    20	
    21	/*
    22	 * This driver provides a window for the host to access a BMC resource
    23	 * across the BMC <-> Host LPC bus.
    24	 *
    25	 * window_type: The BMC resource that the host will access through the
    26	 * window. BMC flash and BMC RAM.
    27	 *
    28	 * window_id: For each window type there may be multiple windows,
    29	 * these are referenced by ID.
    30	 *
    31	 * flags: Reserved for future use, this field is expected to be
    32	 * zeroed.
    33	 *
    34	 * addr: Address on the host LPC bus that the specified window should
    35	 * be mapped. This address must be power of two aligned.
    36	 *
    37	 * offset: Offset into the BMC window that should be mapped to the
    38	 * host (at addr). This must be a multiple of size.
    39	 *
    40	 * size: The size of the mapping. The smallest possible size is 64K.
    41	 * This must be power of two aligned.
    42	 *
    43	 */
    44	
    45	struct aspeed_lpc_ctrl_mapping {
    46		__u8	window_type;
    47		__u8	window_id;
    48		__u16	flags;
    49		__u32	addr;
    50		__u32	offset;
    51		__u32	size;
    52	};
    53	
    54	#define __ASPEED_LPC_CTRL_IOCTL_MAGIC	0xb2
    55	
    56	#define ASPEED_LPC_CTRL_IOCTL_GET_SIZE	_IOWR(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \
    57			0x00, struct aspeed_lpc_ctrl_mapping)
    58	
    59	#define ASPEED_LPC_CTRL_IOCTL_MAP	_IOW(__ASPEED_LPC_CTRL_IOCTL_MAGIC, \
    60			0x01, struct aspeed_lpc_ctrl_mapping)
    61	
    62	#endif /* _LINUX_ASPEED_LPC_CTRL_H */