1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _XEN_XEN_H |
3 | #define _XEN_XEN_H |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | enum 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 |
14 | extern enum xen_domain_type xen_domain_type; |
15 | #else |
16 | #define xen_domain_type XEN_NATIVE |
17 | #endif |
18 | |
19 | #ifdef CONFIG_XEN_PVH |
20 | extern 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 | |
30 | extern uint32_t xen_start_flags; |
31 | |
32 | #ifdef CONFIG_XEN_PV |
33 | extern 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> |
39 | extern struct hvm_start_info pvh_start_info; |
40 | void xen_prepare_pvh(void); |
41 | struct pt_regs; |
42 | void 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 | |
54 | struct bio_vec; |
55 | struct page; |
56 | |
57 | bool 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) |
61 | extern u64 xen_saved_max_mem_size; |
62 | #endif |
63 | |
64 | #ifdef CONFIG_XEN_UNPOPULATED_ALLOC |
65 | int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages); |
66 | void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages); |
67 | #include <linux/ioport.h> |
68 | int arch_xen_unpopulated_init(struct resource **res); |
69 | #else |
70 | #include <xen/balloon.h> |
71 | static 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 | } |
76 | static 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) |
84 | bool __init xen_processor_present(uint32_t acpi_id); |
85 | #else |
86 | #include <linux/bug.h> |
87 | static inline bool xen_processor_present(uint32_t acpi_id) |
88 | { |
89 | BUG(); |
90 | return false; |
91 | } |
92 | #endif |
93 | |
94 | #endif /* _XEN_XEN_H */ |
95 | |