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