1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2020 Alexander Motin <mav@FreeBSD.org>
5 * Copyright (c) 2025 Netflix, Inc.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #ifndef __APEIVAR_H__
30 #define __APEIVAR_H__
31
32 #include "apei_if.h"
33
34 struct resource_map *apei_map_register(device_t dev, ACPI_GENERIC_ADDRESS *gas);
35 struct resource_map *apei_map_memory(device_t dev, rman_res_t start,
36 rman_res_t len);
37 int apei_unmap_register(device_t dev, struct resource_map *map);
38
39 #ifdef __i386__
40 static __inline uint64_t
bus_space_read_8(bus_space_tag_t tag,bus_space_handle_t bsh,bus_size_t offset)41 bus_space_read_8(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset)
42 {
43 return (bus_space_read_4(tag, bsh, offset) |
44 ((uint64_t)bus_space_read_4(tag, bsh, offset + 4)) << 32);
45 }
46 static __inline void
bus_space_write_8(bus_space_tag_t tag,bus_space_handle_t bsh,bus_size_t offset,uint64_t val)47 bus_space_write_8(bus_space_tag_t tag, bus_space_handle_t bsh,
48 bus_size_t offset, uint64_t val)
49 {
50 bus_space_write_4(tag, bsh, offset, val);
51 bus_space_write_4(tag, bsh, offset + 4, val >> 32);
52 }
53 #endif
54
55 #endif /* !__APEIVAR_H__ */
56