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#ifdef CONFIG_XEN_PV
33extern bool xen_pv_pci_possible;
34#else
35#define xen_pv_pci_possible	0
36#endif
37
38#include <xen/interface/hvm/start_info.h>
39extern struct hvm_start_info pvh_start_info;
40void xen_prepare_pvh(void);
41struct pt_regs;
42void xen_pv_evtchn_do_upcall(struct pt_regs *regs);
43
44#ifdef CONFIG_XEN_DOM0
45#include <xen/interface/xen.h>
46#include <asm/xen/hypervisor.h>
47
48#define xen_initial_domain()	(xen_domain() && \
49				 (xen_start_flags & SIF_INITDOMAIN))
50#else  /* !CONFIG_XEN_DOM0 */
51#define xen_initial_domain()	(0)
52#endif	/* CONFIG_XEN_DOM0 */
53
54struct bio_vec;
55struct page;
56
57bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
58		const struct page *page);
59
60#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
61extern u64 xen_saved_max_mem_size;
62#endif
63
64#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
65int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
66void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
67#include <linux/ioport.h>
68int arch_xen_unpopulated_init(struct resource **res);
69#else
70#include <xen/balloon.h>
71static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
72		struct page **pages)
73{
74	return xen_alloc_ballooned_pages(nr_pages, pages);
75}
76static inline void xen_free_unpopulated_pages(unsigned int nr_pages,
77		struct page **pages)
78{
79	xen_free_ballooned_pages(nr_pages, pages);
80}
81#endif
82
83#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86)
84bool __init xen_processor_present(uint32_t acpi_id);
85#else
86#include <linux/bug.h>
87static inline bool xen_processor_present(uint32_t acpi_id)
88{
89	BUG();
90	return false;
91}
92#endif
93
94#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			  xen_have_vector_callback)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
43#else
44#define xen_pvh_domain()	(0)
 
 
 
 
 
45#endif
 
46#endif	/* _XEN_XEN_H */