1/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
2/*
3 * User API methods for ACPI-WMI mapping driver
4 *
5 * Copyright (C) 2017 Dell, Inc.
6 */
7#ifndef _LINUX_WMI_H
8#define _LINUX_WMI_H
9
10#include <linux/ioctl.h>
11#include <linux/types.h>
12
13/* WMI bus will filter all WMI vendor driver requests through this IOC */
14#define WMI_IOC 'W'
15
16/* All ioctl requests through WMI should declare their size followed by
17 * relevant data objects
18 */
19struct wmi_ioctl_buffer {
20 __u64 length;
21 __u8 data[];
22};
23
24/* This structure may be modified by the firmware when we enter
25 * system management mode through SMM, hence the volatiles
26 */
27struct calling_interface_buffer {
28 __u16 cmd_class;
29 __u16 cmd_select;
30 __volatile__ __u32 input[4];
31 __volatile__ __u32 output[4];
32} __attribute__((packed));
33
34struct dell_wmi_extensions {
35 __u32 argattrib;
36 __u32 blength;
37 __u8 data[];
38} __attribute__((packed));
39
40struct dell_wmi_smbios_buffer {
41 __u64 length;
42 struct calling_interface_buffer std;
43 struct dell_wmi_extensions ext;
44} __attribute__((packed));
45
46/* Whitelisted smbios class/select commands */
47#define CLASS_TOKEN_READ 0
48#define CLASS_TOKEN_WRITE 1
49#define SELECT_TOKEN_STD 0
50#define SELECT_TOKEN_BAT 1
51#define SELECT_TOKEN_AC 2
52#define CLASS_FLASH_INTERFACE 7
53#define SELECT_FLASH_INTERFACE 3
54#define CLASS_ADMIN_PROP 10
55#define SELECT_ADMIN_PROP 3
56#define CLASS_INFO 17
57#define SELECT_RFKILL 11
58#define SELECT_APP_REGISTRATION 3
59#define SELECT_DOCK 22
60
61/* whitelisted tokens */
62#define CAPSULE_EN_TOKEN 0x0461
63#define CAPSULE_DIS_TOKEN 0x0462
64#define WSMT_EN_TOKEN 0x04EC
65#define WSMT_DIS_TOKEN 0x04ED
66
67/* Dell SMBIOS calling IOCTL command used by dell-smbios-wmi */
68#define DELL_WMI_SMBIOS_CMD _IOWR(WMI_IOC, 0, struct dell_wmi_smbios_buffer)
69
70#endif