blob: 34603fdf55e6c16d6412086d047e0198c4e1d4ae [file] [log] [blame]
Jose Marinhofc0b2b62019-06-06 11:18:45 +01001/*
2 * Copyright 2019 The Hafnium Authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#pragma once
18
Andrew Walbran475c1452020-02-07 13:22:22 +000019#include <stdint.h>
Jose Marinho75509b42019-04-09 09:34:59 +010020
Andrew Walbran352aa3d2020-05-01 17:51:33 +010021#include "hf/check.h"
22
Andrew Walbranb5ab43c2020-04-30 11:32:54 +010023#include "vmapi/hf/ffa.h"
Jose Marinho75509b42019-04-09 09:34:59 +010024
Andrew Walbranb5ab43c2020-04-30 11:32:54 +010025#define FFA_VERSION_RESERVED_BIT UINT32_C(1U << 31)
Jose Marinho75509b42019-04-09 09:34:59 +010026
Andrew Walbranb5ab43c2020-04-30 11:32:54 +010027static inline struct ffa_value ffa_error(uint64_t error_code)
Andrew Walbrand4d2fa12019-10-01 16:47:25 +010028{
Andrew Walbranb5ab43c2020-04-30 11:32:54 +010029 return (struct ffa_value){.func = FFA_ERROR_32, .arg2 = error_code};
Andrew Walbrand4d2fa12019-10-01 16:47:25 +010030}
Andrew Walbran352aa3d2020-05-01 17:51:33 +010031
32/**
33 * Return the offset to the first constituent within the
34 * `ffa_composite_memory_region` for the given receiver from an
35 * `ffa_memory_region`. The caller must check that the receiver_index is within
36 * bounds, and that it has a composite memory region offset.
37 */
38static inline uint32_t ffa_composite_constituent_offset(
39 struct ffa_memory_region *memory_region, uint32_t receiver_index)
40{
41 CHECK(receiver_index < memory_region->receiver_count);
42 CHECK(memory_region->receivers[receiver_index]
43 .composite_memory_region_offset != 0);
44
45 return memory_region->receivers[receiver_index]
46 .composite_memory_region_offset +
47 sizeof(struct ffa_composite_memory_region);
48}