1 /*
2  *  User API methods for ACPI-WMI mapping driver
3  *
4  *  Copyright (C) 2017 Dell, Inc.
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License version 2 as
8  *  published by the Free Software Foundation.
9  */
10 #ifndef _UAPI_LINUX_WMI_H
11 #define _UAPI_LINUX_WMI_H
12 
13 #include <linux/ioctl.h>
14 #include <linux/types.h>
15 
16 /* WMI bus will filter all WMI vendor driver requests through this IOC */
17 #define WMI_IOC 'W'
18 
19 /* All ioctl requests through WMI should declare their size followed by
20  * relevant data objects
21  */
22 struct wmi_ioctl_buffer {
23 	__u64	length;
24 	__u8	data[];
25 };
26 
27 /* This structure may be modified by the firmware when we enter
28  * system management mode through SMM, hence the volatiles
29  */
30 struct calling_interface_buffer {
31 	__u16 cmd_class;
32 	__u16 cmd_select;
33 	volatile __u32 input[4];
34 	volatile __u32 output[4];
35 } __packed;
36 
37 struct dell_wmi_extensions {
38 	__u32 argattrib;
39 	__u32 blength;
40 	__u8 data[];
41 } __packed;
42 
43 struct dell_wmi_smbios_buffer {
44 	__u64 length;
45 	struct calling_interface_buffer std;
46 	struct dell_wmi_extensions	ext;
47 } __packed;
48 
49 /* Whitelisted smbios class/select commands */
50 #define CLASS_TOKEN_READ	0
51 #define CLASS_TOKEN_WRITE	1
52 #define SELECT_TOKEN_STD	0
53 #define SELECT_TOKEN_BAT	1
54 #define SELECT_TOKEN_AC		2
55 #define CLASS_FLASH_INTERFACE	7
56 #define SELECT_FLASH_INTERFACE	3
57 #define CLASS_ADMIN_PROP	10
58 #define SELECT_ADMIN_PROP	3
59 #define CLASS_INFO		17
60 #define SELECT_RFKILL		11
61 #define SELECT_APP_REGISTRATION	3
62 #define SELECT_DOCK		22
63 
64 /* whitelisted tokens */
65 #define CAPSULE_EN_TOKEN	0x0461
66 #define CAPSULE_DIS_TOKEN	0x0462
67 #define WSMT_EN_TOKEN		0x04EC
68 #define WSMT_DIS_TOKEN		0x04ED
69 
70 /* Dell SMBIOS calling IOCTL command used by dell-smbios-wmi */
71 #define DELL_WMI_SMBIOS_CMD	_IOWR(WMI_IOC, 0, struct dell_wmi_smbios_buffer)
72 
73 #endif
74