1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _XEN_XEN_H
 3#define _XEN_XEN_H
 4
 5#include <linux/types.h>
 6
 7enum xen_domain_type {
 8	XEN_NATIVE,		/* running on bare hardware    */
 9	XEN_PV_DOMAIN,		/* running in a PV domain      */
10	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
11};
12
13#ifdef CONFIG_XEN
14extern enum xen_domain_type xen_domain_type;
15#else
16#define xen_domain_type		XEN_NATIVE
17#endif
18
19#ifdef CONFIG_XEN_PVH
20extern bool xen_pvh;
21#else
22#define xen_pvh			0
23#endif
24
25#define xen_domain()		(xen_domain_type != XEN_NATIVE)
26#define xen_pv_domain()		(xen_domain_type == XEN_PV_DOMAIN)
27#define xen_hvm_domain()	(xen_domain_type == XEN_HVM_DOMAIN)
28#define xen_pvh_domain()	(xen_pvh)
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;
46struct page;
47
48bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
49		const struct page *page);
50
51#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
52extern u64 xen_saved_max_mem_size;
53#endif
54
55#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
56int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
57void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
58#include <linux/ioport.h>
59int arch_xen_unpopulated_init(struct resource **res);
60#else
61#include <xen/balloon.h>
62static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
63		struct page **pages)
64{
65	return xen_alloc_ballooned_pages(nr_pages, pages);
66}
67static inline void xen_free_unpopulated_pages(unsigned int nr_pages,
68		struct page **pages)
69{
70	xen_free_ballooned_pages(nr_pages, pages);
71}
72#endif
73
74#endif	/* _XEN_XEN_H */

 
 1#ifndef _XEN_XEN_H
 2#define _XEN_XEN_H
 3
 
 
 4enum xen_domain_type {
 5	XEN_NATIVE,		/* running on bare hardware    */
 6	XEN_PV_DOMAIN,		/* running in a PV domain      */
 7	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
 8};
 9
10#ifdef CONFIG_XEN
11extern enum xen_domain_type xen_domain_type;
12#else
13#define xen_domain_type		XEN_NATIVE
14#endif
15
 
 
 
 
 
 
16#define xen_domain()		(xen_domain_type != XEN_NATIVE)
17#define xen_pv_domain()		(xen_domain() &&			\
18				 xen_domain_type == XEN_PV_DOMAIN)
19#define xen_hvm_domain()	(xen_domain() &&			\
20				 xen_domain_type == XEN_HVM_DOMAIN)
 
 
 
 
21
22#ifdef CONFIG_XEN_DOM0
23#include <xen/interface/xen.h>
24#include <asm/xen/hypervisor.h>
25
26#define xen_initial_domain()	(xen_domain() && \
27				 xen_start_info && xen_start_info->flags & SIF_INITDOMAIN)
28#else  /* !CONFIG_XEN_DOM0 */
29#define xen_initial_domain()	(0)
30#endif	/* CONFIG_XEN_DOM0 */
31
32#ifdef CONFIG_XEN_PVH
33/* This functionality exists only for x86. The XEN_PVHVM support exists
34 * only in x86 world - hence on ARM it will be always disabled.
35 * N.B. ARM guests are neither PV nor HVM nor PVHVM.
36 * It's a bit like PVH but is different also (it's further towards the H
37 * end of the spectrum than even PVH).
38 */
39#include <xen/features.h>
40#define xen_pvh_domain() (xen_pv_domain() && \
41			  xen_feature(XENFEAT_auto_translated_physmap))
 
 
 
 
 
42#else
43#define xen_pvh_domain()	(0)
 
 
 
 
 
 
 
 
 
 
44#endif
 
45#endif	/* _XEN_XEN_H */