1 | /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */ |
2 | /****************************************************************************** |
3 | * privcmd.h |
4 | * |
5 | * Interface to /proc/xen/privcmd. |
6 | * |
7 | * Copyright (c) 2003-2005, K A Fraser |
8 | * |
9 | * This program is free software; you can redistribute it and/or |
10 | * modify it under the terms of the GNU General Public License version 2 |
11 | * as published by the Free Software Foundation; or, when distributed |
12 | * separately from the Linux kernel or incorporated into other |
13 | * software packages, subject to the following license: |
14 | * |
15 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
16 | * of this source file (the "Software"), to deal in the Software without |
17 | * restriction, including without limitation the rights to use, copy, modify, |
18 | * merge, publish, distribute, sublicense, and/or sell copies of the Software, |
19 | * and to permit persons to whom the Software is furnished to do so, subject to |
20 | * the following conditions: |
21 | * |
22 | * The above copyright notice and this permission notice shall be included in |
23 | * all copies or substantial portions of the Software. |
24 | * |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
28 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
29 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
30 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
31 | * IN THE SOFTWARE. |
32 | */ |
33 | |
34 | #ifndef __LINUX_PUBLIC_PRIVCMD_H__ |
35 | #define __LINUX_PUBLIC_PRIVCMD_H__ |
36 | |
37 | #include <linux/types.h> |
38 | #include <linux/compiler.h> |
39 | #include <xen/interface/xen.h> |
40 | |
41 | struct privcmd_hypercall { |
42 | __u64 op; |
43 | __u64 arg[5]; |
44 | }; |
45 | |
46 | struct privcmd_mmap_entry { |
47 | __u64 va; |
48 | /* |
49 | * This should be a GFN. It's not possible to change the name because |
50 | * it's exposed to the user-space. |
51 | */ |
52 | __u64 mfn; |
53 | __u64 npages; |
54 | }; |
55 | |
56 | struct privcmd_mmap { |
57 | int num; |
58 | domid_t dom; /* target domain */ |
59 | struct privcmd_mmap_entry __user *entry; |
60 | }; |
61 | |
62 | struct privcmd_mmapbatch { |
63 | int num; /* number of pages to populate */ |
64 | domid_t dom; /* target domain */ |
65 | __u64 addr; /* virtual address */ |
66 | xen_pfn_t __user *arr; /* array of mfns - or'd with |
67 | PRIVCMD_MMAPBATCH_*_ERROR on err */ |
68 | }; |
69 | |
70 | #define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U |
71 | #define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U |
72 | |
73 | struct privcmd_mmapbatch_v2 { |
74 | unsigned int num; /* number of pages to populate */ |
75 | domid_t dom; /* target domain */ |
76 | __u64 addr; /* virtual address */ |
77 | const xen_pfn_t __user *arr; /* array of mfns */ |
78 | int __user *err; /* array of error codes */ |
79 | }; |
80 | |
81 | struct privcmd_dm_op_buf { |
82 | void __user *uptr; |
83 | size_t size; |
84 | }; |
85 | |
86 | struct privcmd_dm_op { |
87 | domid_t dom; |
88 | __u16 num; |
89 | const struct privcmd_dm_op_buf __user *ubufs; |
90 | }; |
91 | |
92 | struct privcmd_mmap_resource { |
93 | domid_t dom; |
94 | __u32 type; |
95 | __u32 id; |
96 | __u32 idx; |
97 | __u64 num; |
98 | __u64 addr; |
99 | }; |
100 | |
101 | /* For privcmd_irqfd::flags */ |
102 | #define PRIVCMD_IRQFD_FLAG_DEASSIGN (1 << 0) |
103 | |
104 | struct privcmd_irqfd { |
105 | __u64 dm_op; |
106 | __u32 size; /* Size of structure pointed by dm_op */ |
107 | __u32 fd; |
108 | __u32 flags; |
109 | domid_t dom; |
110 | __u8 pad[2]; |
111 | }; |
112 | |
113 | /* For privcmd_ioeventfd::flags */ |
114 | #define PRIVCMD_IOEVENTFD_FLAG_DEASSIGN (1 << 0) |
115 | |
116 | struct privcmd_ioeventfd { |
117 | __u64 ioreq; |
118 | __u64 ports; |
119 | __u64 addr; |
120 | __u32 addr_len; |
121 | __u32 event_fd; |
122 | __u32 vcpus; |
123 | __u32 vq; |
124 | __u32 flags; |
125 | domid_t dom; |
126 | __u8 pad[2]; |
127 | }; |
128 | |
129 | /* |
130 | * @cmd: IOCTL_PRIVCMD_HYPERCALL |
131 | * @arg: &privcmd_hypercall_t |
132 | * Return: Value returned from execution of the specified hypercall. |
133 | * |
134 | * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2 |
135 | * @arg: &struct privcmd_mmapbatch_v2 |
136 | * Return: 0 on success (i.e., arg->err contains valid error codes for |
137 | * each frame). On an error other than a failed frame remap, -1 is |
138 | * returned and errno is set to EINVAL, EFAULT etc. As an exception, |
139 | * if the operation was otherwise successful but any frame failed with |
140 | * -ENOENT, then -1 is returned and errno is set to ENOENT. |
141 | */ |
142 | #define IOCTL_PRIVCMD_HYPERCALL \ |
143 | _IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall)) |
144 | #define IOCTL_PRIVCMD_MMAP \ |
145 | _IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap)) |
146 | #define IOCTL_PRIVCMD_MMAPBATCH \ |
147 | _IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch)) |
148 | #define IOCTL_PRIVCMD_MMAPBATCH_V2 \ |
149 | _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2)) |
150 | #define IOCTL_PRIVCMD_DM_OP \ |
151 | _IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op)) |
152 | #define IOCTL_PRIVCMD_RESTRICT \ |
153 | _IOC(_IOC_NONE, 'P', 6, sizeof(domid_t)) |
154 | #define IOCTL_PRIVCMD_MMAP_RESOURCE \ |
155 | _IOC(_IOC_NONE, 'P', 7, sizeof(struct privcmd_mmap_resource)) |
156 | #define IOCTL_PRIVCMD_IRQFD \ |
157 | _IOW('P', 8, struct privcmd_irqfd) |
158 | #define IOCTL_PRIVCMD_IOEVENTFD \ |
159 | _IOW('P', 9, struct privcmd_ioeventfd) |
160 | |
161 | #endif /* __LINUX_PUBLIC_PRIVCMD_H__ */ |
162 | |