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/* SPDX-License-Identifier: MIT */
/*
* Copyright(c) 2020, Intel Corporation. All rights reserved.
*/
#ifndef __INTEL_PXP_TYPES_H__
#define __INTEL_PXP_TYPES_H__
#include <linux/completion.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/workqueue.h>
struct intel_context;
struct i915_pxp_component;
struct intel_pxp {
struct i915_pxp_component *pxp_component;
bool pxp_component_added;
struct intel_context *ce;
/*
* After a teardown, the arb session can still be in play on the HW
* even if the keys are gone, so we can't rely on the HW state of the
* session to know if it's valid and need to track the status in SW.
*/
bool arb_is_valid;
/*
* Keep track of which key instance we're on, so we can use it to
* determine if an object was created using the current key or a
* previous one.
*/
u32 key_instance;
struct mutex tee_mutex; /* protects the tee channel binding */
/*
* If the HW perceives an attack on the integrity of the encryption it
* will invalidate the keys and expect SW to re-initialize the session.
* We keep track of this state to make sure we only re-start the arb
* session when required.
*/
bool hw_state_invalidated;
bool irq_enabled;
struct completion termination;
struct work_struct session_work;
u32 session_events; /* protected with gt->irq_lock */
#define PXP_TERMINATION_REQUEST BIT(0)
#define PXP_TERMINATION_COMPLETE BIT(1)
};
#endif /* __INTEL_PXP_TYPES_H__ */
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