1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _XEN_XEN_H
3#define _XEN_XEN_H
4
5enum xen_domain_type {
6 XEN_NATIVE, /* running on bare hardware */
7 XEN_PV_DOMAIN, /* running in a PV domain */
8 XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
9};
10
11#ifdef CONFIG_XEN
12extern enum xen_domain_type xen_domain_type;
13#else
14#define xen_domain_type XEN_NATIVE
15#endif
16
17#ifdef CONFIG_XEN_PVH
18extern bool xen_pvh;
19#else
20#define xen_pvh 0
21#endif
22
23#define xen_domain() (xen_domain_type != XEN_NATIVE)
24#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
25#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
26#define xen_pvh_domain() (xen_pvh)
27
28#include <linux/types.h>
29
30extern uint32_t xen_start_flags;
31
32#include <xen/interface/hvm/start_info.h>
33extern struct hvm_start_info pvh_start_info;
34
35#ifdef CONFIG_XEN_DOM0
36#include <xen/interface/xen.h>
37#include <asm/xen/hypervisor.h>
38
39#define xen_initial_domain() (xen_domain() && \
40 (xen_start_flags & SIF_INITDOMAIN))
41#else /* !CONFIG_XEN_DOM0 */
42#define xen_initial_domain() (0)
43#endif /* CONFIG_XEN_DOM0 */
44
45struct bio_vec;
46bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
47 const struct bio_vec *vec2);
48
49#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
50extern u64 xen_saved_max_mem_size;
51#endif
52
53#endif /* _XEN_XEN_H */
54