forked from Qortal/Brooklyn
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
|
|
/*
|
|
* Surface System Aggregator Module (SSAM) user-space EC interface.
|
|
*
|
|
* Definitions, structs, and IOCTLs for the /dev/surface/aggregator misc
|
|
* device. This device provides direct user-space access to the SSAM EC.
|
|
* Intended for debugging and development.
|
|
*
|
|
* Copyright (C) 2020 Maximilian Luz <luzmaximilian@gmail.com>
|
|
*/
|
|
|
|
#ifndef _UAPI_LINUX_SURFACE_AGGREGATOR_CDEV_H
|
|
#define _UAPI_LINUX_SURFACE_AGGREGATOR_CDEV_H
|
|
|
|
#include <linux/ioctl.h>
|
|
#include <linux/types.h>
|
|
|
|
/**
|
|
* enum ssam_cdev_request_flags - Request flags for SSAM cdev request IOCTL.
|
|
*
|
|
* @SSAM_CDEV_REQUEST_HAS_RESPONSE:
|
|
* Specifies that the request expects a response. If not set, the request
|
|
* will be directly completed after its underlying packet has been
|
|
* transmitted. If set, the request transport system waits for a response
|
|
* of the request.
|
|
*
|
|
* @SSAM_CDEV_REQUEST_UNSEQUENCED:
|
|
* Specifies that the request should be transmitted via an unsequenced
|
|
* packet. If set, the request must not have a response, meaning that this
|
|
* flag and the %SSAM_CDEV_REQUEST_HAS_RESPONSE flag are mutually
|
|
* exclusive.
|
|
*/
|
|
enum ssam_cdev_request_flags {
|
|
SSAM_CDEV_REQUEST_HAS_RESPONSE = 0x01,
|
|
SSAM_CDEV_REQUEST_UNSEQUENCED = 0x02,
|
|
};
|
|
|
|
/**
|
|
* struct ssam_cdev_request - Controller request IOCTL argument.
|
|
* @target_category: Target category of the SAM request.
|
|
* @target_id: Target ID of the SAM request.
|
|
* @command_id: Command ID of the SAM request.
|
|
* @instance_id: Instance ID of the SAM request.
|
|
* @flags: Request flags (see &enum ssam_cdev_request_flags).
|
|
* @status: Request status (output).
|
|
* @payload: Request payload (input data).
|
|
* @payload.data: Pointer to request payload data.
|
|
* @payload.length: Length of request payload data (in bytes).
|
|
* @response: Request response (output data).
|
|
* @response.data: Pointer to response buffer.
|
|
* @response.length: On input: Capacity of response buffer (in bytes).
|
|
* On output: Length of request response (number of bytes
|
|
* in the buffer that are actually used).
|
|
*/
|
|
struct ssam_cdev_request {
|
|
__u8 target_category;
|
|
__u8 target_id;
|
|
__u8 command_id;
|
|
__u8 instance_id;
|
|
__u16 flags;
|
|
__s16 status;
|
|
|
|
struct {
|
|
__u64 data;
|
|
__u16 length;
|
|
__u8 __pad[6];
|
|
} payload;
|
|
|
|
struct {
|
|
__u64 data;
|
|
__u16 length;
|
|
__u8 __pad[6];
|
|
} response;
|
|
} __attribute__((__packed__));
|
|
|
|
#define SSAM_CDEV_REQUEST _IOWR(0xA5, 1, struct ssam_cdev_request)
|
|
|
|
#endif /* _UAPI_LINUX_SURFACE_AGGREGATOR_CDEV_H */
|