Zephyr Project API 3.7.0
A Scalable Open Source RTOS
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memory.h
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1/* SPDX-License-Identifier: MIT */
2
3/******************************************************************************
4 * memory.h
5 *
6 * Memory reservation and information.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to
10 * deal in the Software without restriction, including without limitation the
11 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
12 * sell copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 *
26 * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
27 */
28
29#ifndef __XEN_PUBLIC_MEMORY_H__
30#define __XEN_PUBLIC_MEMORY_H__
31
32#include "xen.h"
33
34#define XENMEM_populate_physmap 6
35
37
38 /*
39 * XENMEM_increase_reservation:
40 * OUT: MFN (*not* GMFN) bases of extents that were allocated
41 * XENMEM_decrease_reservation:
42 * IN: GMFN bases of extents to free
43 * XENMEM_populate_physmap:
44 * IN: GPFN bases of extents to populate with memory
45 * OUT: GMFN bases of extents that were allocated
46 * (NB. This command also updates the mach_to_phys translation table)
47 * XENMEM_claim_pages:
48 * IN: must be zero
49 */
51
52 /* Number of extents, and size/alignment of each (2^extent_order pages). */
54 unsigned int extent_order;
55
56#if __XEN_INTERFACE_VERSION__ >= 0x00030209
57 /* XENMEMF flags. */
58 unsigned int mem_flags;
59#else
60 unsigned int address_bits;
61#endif
62
63 /*
64 * Domain whose reservation is being changed.
65 * Unprivileged domains can specify only DOMID_SELF.
66 */
68};
71
72/* A batched version of add_to_physmap. */
73#define XENMEM_add_to_physmap_batch 23
75 /* IN */
76 /* Which domain to change the mapping for. */
78 uint16_t space; /* => enum phys_map_space */
79
80 /* Number of pages to go through */
82
83#if __XEN_INTERFACE_VERSION__ < 0x00040700
84 domid_t foreign_domid; /* IFF gmfn_foreign. Should be 0 for other spaces. */
85#else
86 union xen_add_to_physmap_batch_extra {
87 domid_t foreign_domid; /* gmfn_foreign */
88 uint16_t res0; /* All the other spaces. Should be 0 */
89 } u;
90#endif
91
92 /* Indexes into space being mapped. */
94
95 /* GPFN in domid where the source mapping page should appear. */
97
98 /* OUT */
99 /* Per index error code. */
101};
104
105
106#define XENMAPSPACE_shared_info 0 /* shared info page */
107#define XENMAPSPACE_grant_table 1 /* grant table page */
108#define XENMAPSPACE_gmfn 2 /* GMFN */
109
110/* GMFN range, XENMEM_add_to_physmap only.*/
111#define XENMAPSPACE_gmfn_range 3
112
113/* GMFN from another dom, XENMEM_add_to_physmap_batch only. */
114#define XENMAPSPACE_gmfn_foreign 4
115
116/*
117 * Device mmio region ARM only; the region is mapped in Stage-2 using the
118 * Normal Memory Inner/Outer Write-Back Cacheable memory attribute.
119 */
120#define XENMAPSPACE_dev_mmio 5
121
122/*
123 * Sets the GPFN at which a particular page appears in the specified guest's
124 * physical address space (translated guests only).
125 * arg == addr of xen_add_to_physmap_t.
126 */
127#define XENMEM_add_to_physmap 7
129 /* Which domain to change the mapping for. */
131
132 /* Number of pages to go through for gmfn_range */
134
135 unsigned int space; /* => enum phys_map_space */
136
137#define XENMAPIDX_grant_table_status 0x80000000
138
139 /* Index into space being mapped. */
141
142 /* GPFN in domid where the source mapping page should appear. */
144};
147
148/*
149 * Unmaps the page appearing at a particular GPFN from the specified guest's
150 * physical address space (translated guests only).
151 * arg == addr of xen_remove_from_physmap_t.
152 */
153#define XENMEM_remove_from_physmap 15
155 /* Which domain to change the mapping for. */
157
158 /* GPFN of the current mapping of the page. */
160};
163
164#endif /* __XEN_PUBLIC_MEMORY_H__ */
uint64_t xen_pfn_t
Definition arch-arm.h:204
uint64_t xen_ulong_t
Definition arch-arm.h:214
#define DEFINE_XEN_GUEST_HANDLE(name)
Definition arch-arm.h:192
__UINT16_TYPE__ uint16_t
Definition stdint.h:89
Definition memory.h:74
uint16_t space
Definition memory.h:78
uint16_t size
Definition memory.h:81
domid_t domid
Definition memory.h:77
XEN_GUEST_HANDLE(xen_pfn_t) gpfns
XEN_GUEST_HANDLE(xen_ulong_t) idxs
domid_t foreign_domid
Definition memory.h:84
Definition memory.h:128
uint16_t size
Definition memory.h:133
xen_ulong_t idx
Definition memory.h:140
unsigned int space
Definition memory.h:135
xen_pfn_t gpfn
Definition memory.h:143
domid_t domid
Definition memory.h:130
Definition memory.h:36
xen_ulong_t nr_extents
Definition memory.h:53
unsigned int address_bits
Definition memory.h:60
domid_t domid
Definition memory.h:67
XEN_GUEST_HANDLE(xen_pfn_t) extent_start
unsigned int extent_order
Definition memory.h:54
Definition memory.h:154
xen_pfn_t gpfn
Definition memory.h:159
domid_t domid
Definition memory.h:156
uint16_t domid_t
Definition xen.h:217