1/******************************************************************************
2 * SPDX-License-Identifier: MIT OR GPL-2.0-only
3 *
4 * privcmd.h
5 *
6 * Interface to /proc/xen/privcmd.
7 *
8 * Copyright (c) 2003-2005, K A Fraser
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License version 2
12 * as published by the Free Software Foundation; or, when distributed
13 * separately from the Linux kernel or incorporated into other
14 * software packages, subject to the following license:
15 *
16 * Permission is hereby granted, free of charge, to any person obtaining a copy
17 * of this source file (the "Software"), to deal in the Software without
18 * restriction, including without limitation the rights to use, copy, modify,
19 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
20 * and to permit persons to whom the Software is furnished to do so, subject to
21 * the following conditions:
22 *
23 * The above copyright notice and this permission notice shall be included in
24 * all copies or substantial portions of the Software.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
29 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
30 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
31 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
32 * IN THE SOFTWARE.
33 */
34
35#ifndef __XEN_PRIVCMD_H__
36#define __XEN_PRIVCMD_H__
37
38struct ioctl_privcmd_hypercall
39{
40	unsigned long op; /* hypercall number */
41	unsigned long arg[5]; /* arguments */
42	long retval; /* return value */
43};
44
45struct ioctl_privcmd_mmapbatch {
46	int num;     /* number of pages to populate */
47	domid_t dom; /* target domain */
48	unsigned long addr;  /* virtual address */
49	const xen_pfn_t *arr; /* array of mfns */
50	int *err; /* array of error codes */
51};
52
53struct ioctl_privcmd_mmapresource {
54	domid_t dom; /* target domain */
55	unsigned int type; /* type of resource to map */
56	unsigned int id; /* type-specific resource identifier */
57	unsigned int idx; /* the index of the initial frame to be mapped */
58	unsigned long num; /* number of frames of the resource to be mapped */
59	unsigned long addr; /* physical address to map into */
60	/*
61	 * Note: issuing an ioctl with num = addr = 0 will return the size of
62	 * the resource.
63	 */
64};
65
66struct privcmd_dmop_buf {
67	void *uptr; /* pointer to memory (in calling process) */
68	size_t size; /* size of the buffer */
69};
70
71struct ioctl_privcmd_dmop {
72	domid_t dom; /* target domain */
73	unsigned int num; /* num of buffers */
74	const struct privcmd_dmop_buf *ubufs; /* array of buffers */
75};
76
77#define IOCTL_PRIVCMD_HYPERCALL					\
78	_IOWR('E', 0, struct ioctl_privcmd_hypercall)
79#define IOCTL_PRIVCMD_MMAPBATCH					\
80	_IOWR('E', 1, struct ioctl_privcmd_mmapbatch)
81#define IOCTL_PRIVCMD_MMAP_RESOURCE				\
82	_IOWR('E', 2, struct ioctl_privcmd_mmapresource)
83#define IOCTL_PRIVCMD_DM_OP					\
84	_IOW('E', 3, struct ioctl_privcmd_dmop)
85#define IOCTL_PRIVCMD_RESTRICT					\
86	_IOW('E', 4, domid_t)
87
88#endif /* !__XEN_PRIVCMD_H__ */
89