| /* |
| * Copyright (c) 2014-2018, Intel Corporation |
| * |
| * 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| * Fields set in @user that are not known (i.e. from a newer version of this |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 */ |