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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
6c4e9767 CB |
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 _UAPI_LINUX_ASPEED_LPC_CTRL_H | |
12 | #define _UAPI_LINUX_ASPEED_LPC_CTRL_H | |
13 | ||
14 | #include <linux/ioctl.h> | |
f580ff0e | 15 | #include <linux/types.h> |
6c4e9767 CB |
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 /* _UAPI_LINUX_ASPEED_LPC_CTRL_H */ |