include/uapi/linux/wmi.h

   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 _UAPI_LINUX_WMI_H
   8 #define _UAPI_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  */
  19 struct 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  */
  27 struct calling_interface_buffer {
  28         __u16 cmd_class;
  29         __u16 cmd_select;
  30         volatile __u32 input[4];
  31         volatile __u32 output[4];
  32 } __packed;
  33
  34 struct dell_wmi_extensions {
  35         __u32 argattrib;
  36         __u32 blength;
  37         __u8 data[];
  38 } __packed;
  39
  40 struct dell_wmi_smbios_buffer {
  41         __u64 length;
  42         struct calling_interface_buffer std;
  43         struct dell_wmi_extensions      ext;
  44 } __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