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