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/*
* Copyright (c) 2014-2025, Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PT_ASID_H
#define PT_ASID_H
#include <stddef.h>
struct pt_asid;
/* Read an asid provided by our user.
*
* Translate a user-provided asid in @user into @asid. This uses default values
* for fields that are not provided by the user and for all fields, if @user is
* NULL.
*
* Fields set in @user that are not known (i.e. from a newer version of this
* library) will be ignored.
*
* Returns zero on success, a negative error code otherwise.
* Returns -pte_internal, if @asid is NULL.
*/
extern int pt_asid_from_user(struct pt_asid *asid, const struct pt_asid *user);
/* Provide an asid to the user.
*
* Translate @asid into a potentially older or newer version in @user.
*
* Returns zero on success, a negative error code otherwise.
* Returns -pte_internal, if @user or @asid is NULL.
* Returns -pte_invalid, if @size is too small.
*/
extern int pt_asid_to_user(struct pt_asid *user, const struct pt_asid *asid,
size_t size);
/* Match two asids.
*
* Asids match if all fields provide either default values or are identical.
*
* Returns a positive number if @lhs matches @rhs.
* Returns zero if @lhs does not match @rhs.
* Returns a negative error code otherwise.
*
* Returns -pte_internal if @lhs or @rhs are NULL.
*/
extern int pt_asid_match(const struct pt_asid *lhs, const struct pt_asid *rhs);
#endif /* PT_ASID_H */
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