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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 _LINUX_WMI_H
11#define _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 */
22struct 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 */
30struct calling_interface_buffer {
31 __u16 cmd_class;
32 __u16 cmd_select;
33 __volatile__ __u32 input[4];
34 __volatile__ __u32 output[4];
35} __attribute__((packed));
36
37struct dell_wmi_extensions {
38 __u32 argattrib;
39 __u32 blength;
40 __u8 data[];
41} __attribute__((packed));
42
43struct dell_wmi_smbios_buffer {
44 __u64 length;
45 struct calling_interface_buffer std;
46 struct dell_wmi_extensions ext;
47} __attribute__((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

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