1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright (c) 2022-2023 Intel Corporation
4 */
5
6#ifndef _I915_GSC_PROXY_MEI_INTERFACE_H_
7#define _I915_GSC_PROXY_MEI_INTERFACE_H_
8
9#include <linux/types.h>
10
11struct device;
12struct module;
13
14/**
15 * struct i915_gsc_proxy_component_ops - ops for GSC Proxy services.
16 * @owner: Module providing the ops
17 * @send: sends a proxy message from GSC FW to ME FW
18 * @recv: receives a proxy message for GSC FW from ME FW
19 */
20struct i915_gsc_proxy_component_ops {
21 struct module *owner;
22
23 /**
24 * @send: Sends a proxy message to ME FW.
25 * @dev: device struct corresponding to the mei device
26 * @buf: message buffer to send
27 * @size: size of the message
28 * Return: bytes sent on success, negative errno value on failure
29 */
30 int (*send)(struct device *dev, const void *buf, size_t size);
31
32 /**
33 * @recv: Receives a proxy message from ME FW.
34 * @dev: device struct corresponding to the mei device
35 * @buf: message buffer to contain the received message
36 * @size: size of the buffer
37 * Return: bytes received on success, negative errno value on failure
38 */
39 int (*recv)(struct device *dev, void *buf, size_t size);
40};
41
42/**
43 * struct i915_gsc_proxy_component - Used for communication between i915 and
44 * MEI drivers for GSC proxy services
45 * @mei_dev: device that provide the GSC proxy service.
46 * @ops: Ops implemented by GSC proxy driver, used by i915 driver.
47 */
48struct i915_gsc_proxy_component {
49 struct device *mei_dev;
50 const struct i915_gsc_proxy_component_ops *ops;
51};
52
53#endif /* _I915_GSC_PROXY_MEI_INTERFACE_H_ */
54