diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/wmi.h | 13 | ||||
| -rw-r--r-- | include/uapi/linux/wmi.h | 73 |
2 files changed, 83 insertions, 3 deletions
diff --git a/include/linux/wmi.h b/include/linux/wmi.h index cd0d7734dc49..4757cb5077e5 100644 --- a/include/linux/wmi.h +++ b/include/linux/wmi.h @@ -18,6 +18,7 @@ #include <linux/device.h> #include <linux/acpi.h> +#include <uapi/linux/wmi.h> struct wmi_device { struct device dev; @@ -26,13 +27,17 @@ struct wmi_device { bool setable; }; +/* evaluate the ACPI method associated with this device */ +extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev, + u8 instance, u32 method_id, + const struct acpi_buffer *in, + struct acpi_buffer *out); + /* Caller must kfree the result. */ extern union acpi_object *wmidev_block_query(struct wmi_device *wdev, u8 instance); -/* Gets another device on the same bus. Caller must put_device the result. */ -extern struct wmi_device *wmidev_get_other_guid(struct wmi_device *wdev, - const char *guid_string); +extern int set_required_buffer_size(struct wmi_device *wdev, u64 length); struct wmi_device_id { const char *guid_string; @@ -45,6 +50,8 @@ struct wmi_driver { int (*probe)(struct wmi_device *wdev); int (*remove)(struct wmi_device *wdev); void (*notify)(struct wmi_device *device, union acpi_object *data); + long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd, + struct wmi_ioctl_buffer *arg); }; extern int __must_check __wmi_driver_register(struct wmi_driver *driver, diff --git a/include/uapi/linux/wmi.h b/include/uapi/linux/wmi.h new file mode 100644 index 000000000000..7a92e9e3d1c0 --- /dev/null +++ b/include/uapi/linux/wmi.h @@ -0,0 +1,73 @@ +/* + * User API methods for ACPI-WMI mapping driver + * + * Copyright (C) 2017 Dell, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _UAPI_LINUX_WMI_H +#define _UAPI_LINUX_WMI_H + +#include <linux/ioctl.h> +#include <linux/types.h> + +/* WMI bus will filter all WMI vendor driver requests through this IOC */ +#define WMI_IOC 'W' + +/* All ioctl requests through WMI should declare their size followed by + * relevant data objects + */ +struct wmi_ioctl_buffer { + __u64 length; + __u8 data[]; +}; + +/* This structure may be modified by the firmware when we enter + * system management mode through SMM, hence the volatiles + */ +struct calling_interface_buffer { + __u16 cmd_class; + __u16 cmd_select; + volatile __u32 input[4]; + volatile __u32 output[4]; +} __packed; + +struct dell_wmi_extensions { + __u32 argattrib; + __u32 blength; + __u8 data[]; +} __packed; + +struct dell_wmi_smbios_buffer { + __u64 length; + struct calling_interface_buffer std; + struct dell_wmi_extensions ext; +} __packed; + +/* Whitelisted smbios class/select commands */ +#define CLASS_TOKEN_READ 0 +#define CLASS_TOKEN_WRITE 1 +#define SELECT_TOKEN_STD 0 +#define SELECT_TOKEN_BAT 1 +#define SELECT_TOKEN_AC 2 +#define CLASS_FLASH_INTERFACE 7 +#define SELECT_FLASH_INTERFACE 3 +#define CLASS_ADMIN_PROP 10 +#define SELECT_ADMIN_PROP 3 +#define CLASS_INFO 17 +#define SELECT_RFKILL 11 +#define SELECT_APP_REGISTRATION 3 +#define SELECT_DOCK 22 + +/* whitelisted tokens */ +#define CAPSULE_EN_TOKEN 0x0461 +#define CAPSULE_DIS_TOKEN 0x0462 +#define WSMT_EN_TOKEN 0x04EC +#define WSMT_DIS_TOKEN 0x04ED + +/* Dell SMBIOS calling IOCTL command used by dell-smbios-wmi */ +#define DELL_WMI_SMBIOS_CMD _IOWR(WMI_IOC, 0, struct dell_wmi_smbios_buffer) + +#endif |