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
11 struct device;
12 struct 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 */
20 struct 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 */
48 struct 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
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