1/*-
2 * Copyright (c) 2016 Netflix, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer
9 * in this position and unchanged.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef _SYS_EFIIO_H_
27#define _SYS_EFIIO_H_
28
29#include <sys/ioccom.h>
30#include <sys/uuid.h>
31#include <sys/efi.h>
32
33/*
34 * The EFI world chose not to use the typical uuid_t defines for its global
35 * universal identifiers. But the textual representation is the same, and we can
36 * use the uuid_* routines to parse and print them. However, all EFI interfaces
37 * for this need to be efi_guid_t so we can share code with EDK2, so the *_ioc
38 * structures in this file are converted to _ioctl structure to transition to
39 * this new requirement. This library is little used outside of FreeBSD and they
40 * will be dropped in 16.
41 */
42_Static_assert(sizeof(struct uuid) == sizeof(efi_guid_t),
43 "uuid_t and efi_guid_t are same bytes, but different elements");
44#if __FreeBSD_version < 1600000 && !defined(_KERNEL)
45#define _WANT_EFI_IOC
46#endif
47
48struct efi_get_table_ioctl
49{
50 void *buf; /* Pointer to userspace buffer */
51 efi_guid_t guid; /* GUID to look up */
52 size_t table_len; /* Table size */
53 size_t buf_len; /* Size of the buffer */
54};
55
56struct efi_var_ioctl
57{
58 efi_char *name; /* User pointer to name, in wide chars */
59 size_t namesize; /* Number of wide characters in name */
60 efi_guid_t vendor; /* Vendor's GUID for variable */
61 uint32_t attrib; /* Attributes */
62 void *data; /* User pointer to the data */
63 size_t datasize; /* Number of *bytes* in the data */
64};
65
66struct efi_waketime_ioctl
67{
68 struct efi_tm waketime;
69 uint8_t enabled;
70 uint8_t pending;
71};
72
73#define EFIIOC_GET_TABLE _IOWR('E', 1, struct efi_get_table_ioctl)
74#define EFIIOC_GET_TIME _IOR('E', 2, struct efi_tm)
75#define EFIIOC_SET_TIME _IOW('E', 3, struct efi_tm)
76#define EFIIOC_VAR_GET _IOWR('E', 4, struct efi_var_ioctl)
77#define EFIIOC_VAR_NEXT _IOWR('E', 5, struct efi_var_ioctl)
78#define EFIIOC_VAR_SET _IOWR('E', 6, struct efi_var_ioctl)
79#define EFIIOC_GET_WAKETIME _IOR('E', 7, struct efi_waketime_ioctl)
80#define EFIIOC_SET_WAKETIME _IOW('E', 8, struct efi_waketime_ioctl)
81
82#ifdef _WANT_EFI_IOC
83struct efi_get_table_ioc
84{
85 void *buf; /* Pointer to userspace buffer */
86 struct uuid uuid; /* GUID to look up */
87 size_t table_len; /* Table size */
88 size_t buf_len; /* Size of the buffer */
89};
90
91struct efi_var_ioc
92{
93 efi_char *name; /* User pointer to name, in wide chars */
94 size_t namesize; /* Number of wide characters in name */
95 struct uuid vendor; /* Vendor's GUID for variable */
96 uint32_t attrib; /* Attributes */
97 void *data; /* User pointer to the data */
98 size_t datasize; /* Number of *bytes* in the data */
99};
100
101_Static_assert(sizeof(struct efi_get_table_ioc) == sizeof(struct efi_get_table_ioctl),
102 "Old and new struct table defines must be the same size");
103_Static_assert(sizeof(struct efi_var_ioc) == sizeof(struct efi_var_ioctl),
104 "Old and new struct var defines must be the same size");
105#define efi_waketime_ioc efi_waketime_ioctl
106#endif
107
108#endif /* _SYS_EFIIO_H_ */