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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2020 Intel Corporation
*/
#ifndef _I915_PXP_TEE_INTERFACE_H_
#define _I915_PXP_TEE_INTERFACE_H_
#include <linux/mutex.h>
#include <linux/device.h>
struct scatterlist;
/**
* struct i915_pxp_component_ops - ops for PXP services.
*/
struct i915_pxp_component_ops {
/**
* @owner: Module providing the ops.
*/
struct module *owner;
/**
* @send: Send a PXP message.
*/
int (*send)(struct device *dev, const void *message, size_t size,
unsigned long timeout_ms);
/**
* @recv: Receive a PXP message.
*/
int (*recv)(struct device *dev, void *buffer, size_t size,
unsigned long timeout_ms);
/**
* @gsc_command: Send a GSC command.
*/
ssize_t (*gsc_command)(struct device *dev, u8 client_id, u32 fence_id,
struct scatterlist *sg_in, size_t total_in_len,
struct scatterlist *sg_out);
};
/**
* struct i915_pxp_component - Used for communication between i915 and TEE
* drivers for the PXP services
*/
struct i915_pxp_component {
/**
* @tee_dev: device that provide the PXP service from TEE Bus.
*/
struct device *tee_dev;
/**
* @ops: Ops implemented by TEE driver, used by i915 driver.
*/
const struct i915_pxp_component_ops *ops;
/**
* @mutex: To protect the above members.
*/
struct mutex mutex;
};
#endif /* _I915_TEE_PXP_INTERFACE_H_ */
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