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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
41struct privcmd_hypercall {
42 __u64 op;
43 __u64 arg[5];
44};
45
46struct 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
56struct privcmd_mmap {
57 int num;
58 domid_t dom; /* target domain */
59 struct privcmd_mmap_entry __user *entry;
60};
61
62struct 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
73struct 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
81struct privcmd_dm_op_buf {
82 void __user *uptr;
83 size_t size;
84};
85
86struct privcmd_dm_op {
87 domid_t dom;
88 __u16 num;
89 const struct privcmd_dm_op_buf __user *ubufs;
90};
91
92struct 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
104struct 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
116struct 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
129struct privcmd_pcidev_get_gsi {
130 __u32 sbdf;
131 __u32 gsi;
132};
133
134/*
135 * @cmd: IOCTL_PRIVCMD_HYPERCALL
136 * @arg: &privcmd_hypercall_t
137 * Return: Value returned from execution of the specified hypercall.
138 *
139 * @cmd: IOCTL_PRIVCMD_MMAPBATCH_V2
140 * @arg: &struct privcmd_mmapbatch_v2
141 * Return: 0 on success (i.e., arg->err contains valid error codes for
142 * each frame). On an error other than a failed frame remap, -1 is
143 * returned and errno is set to EINVAL, EFAULT etc. As an exception,
144 * if the operation was otherwise successful but any frame failed with
145 * -ENOENT, then -1 is returned and errno is set to ENOENT.
146 */
147#define IOCTL_PRIVCMD_HYPERCALL \
148 _IOC(_IOC_NONE, 'P', 0, sizeof(struct privcmd_hypercall))
149#define IOCTL_PRIVCMD_MMAP \
150 _IOC(_IOC_NONE, 'P', 2, sizeof(struct privcmd_mmap))
151#define IOCTL_PRIVCMD_MMAPBATCH \
152 _IOC(_IOC_NONE, 'P', 3, sizeof(struct privcmd_mmapbatch))
153#define IOCTL_PRIVCMD_MMAPBATCH_V2 \
154 _IOC(_IOC_NONE, 'P', 4, sizeof(struct privcmd_mmapbatch_v2))
155#define IOCTL_PRIVCMD_DM_OP \
156 _IOC(_IOC_NONE, 'P', 5, sizeof(struct privcmd_dm_op))
157#define IOCTL_PRIVCMD_RESTRICT \
158 _IOC(_IOC_NONE, 'P', 6, sizeof(domid_t))
159#define IOCTL_PRIVCMD_MMAP_RESOURCE \
160 _IOC(_IOC_NONE, 'P', 7, sizeof(struct privcmd_mmap_resource))
161#define IOCTL_PRIVCMD_IRQFD \
162 _IOW('P', 8, struct privcmd_irqfd)
163#define IOCTL_PRIVCMD_IOEVENTFD \
164 _IOW('P', 9, struct privcmd_ioeventfd)
165#define IOCTL_PRIVCMD_PCIDEV_GET_GSI \
166 _IOC(_IOC_NONE, 'P', 10, sizeof(struct privcmd_pcidev_get_gsi))
167
168#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */