tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef INCLUDE_XEN_OPS_H
2#define INCLUDE_XEN_OPS_H
3
4#include <linux/percpu.h>
5#include <linux/notifier.h>
6#include <linux/efi.h>
7#include <asm/xen/interface.h>
8#include <xen/interface/vcpu.h>
9
10DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
11
12DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
13static inline uint32_t xen_vcpu_nr(int cpu)
14{
15 return per_cpu(xen_vcpu_id, cpu);
16}
17
18void xen_arch_pre_suspend(void);
19void xen_arch_post_suspend(int suspend_cancelled);
20
21void xen_timer_resume(void);
22void xen_arch_resume(void);
23void xen_arch_suspend(void);
24
25void xen_resume_notifier_register(struct notifier_block *nb);
26void xen_resume_notifier_unregister(struct notifier_block *nb);
27
28bool xen_vcpu_stolen(int vcpu);
29void xen_setup_runstate_info(int cpu);
30void xen_time_setup_guest(void);
31void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
32u64 xen_steal_clock(int cpu);
33
34int xen_setup_shutdown_event(void);
35
36extern unsigned long *xen_contiguous_bitmap;
37int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
38 unsigned int address_bits,
39 dma_addr_t *dma_handle);
40
41void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
42
43struct vm_area_struct;
44
45/*
46 * xen_remap_domain_gfn_array() - map an array of foreign frames
47 * @vma: VMA to map the pages into
48 * @addr: Address at which to map the pages
49 * @gfn: Array of GFNs to map
50 * @nr: Number entries in the GFN array
51 * @err_ptr: Returns per-GFN error status.
52 * @prot: page protection mask
53 * @domid: Domain owning the pages
54 * @pages: Array of pages if this domain has an auto-translated physmap
55 *
56 * @gfn and @err_ptr may point to the same buffer, the GFNs will be
57 * overwritten by the error codes after they are mapped.
58 *
59 * Returns the number of successfully mapped frames, or a -ve error
60 * code.
61 */
62int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
63 unsigned long addr,
64 xen_pfn_t *gfn, int nr,
65 int *err_ptr, pgprot_t prot,
66 unsigned domid,
67 struct page **pages);
68
69/* xen_remap_domain_gfn_range() - map a range of foreign frames
70 * @vma: VMA to map the pages into
71 * @addr: Address at which to map the pages
72 * @gfn: First GFN to map.
73 * @nr: Number frames to map
74 * @prot: page protection mask
75 * @domid: Domain owning the pages
76 * @pages: Array of pages if this domain has an auto-translated physmap
77 *
78 * Returns the number of successfully mapped frames, or a -ve error
79 * code.
80 */
81int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
82 unsigned long addr,
83 xen_pfn_t gfn, int nr,
84 pgprot_t prot, unsigned domid,
85 struct page **pages);
86int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
87 int numpgs, struct page **pages);
88int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
89 unsigned long addr,
90 xen_pfn_t *gfn, int nr,
91 int *err_ptr, pgprot_t prot,
92 unsigned domid,
93 struct page **pages);
94int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
95 int nr, struct page **pages);
96int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
97 unsigned long nr_grant_frames);
98
99bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
100
101efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
102efi_status_t xen_efi_set_time(efi_time_t *tm);
103efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
104 efi_time_t *tm);
105efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
106efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
107 u32 *attr, unsigned long *data_size,
108 void *data);
109efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
110 efi_char16_t *name, efi_guid_t *vendor);
111efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
112 u32 attr, unsigned long data_size,
113 void *data);
114efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
115 u64 *remaining_space,
116 u64 *max_variable_size);
117efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
118efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
119 unsigned long count, unsigned long sg_list);
120efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
121 unsigned long count, u64 *max_size,
122 int *reset_type);
123
124#ifdef CONFIG_PREEMPT
125
126static inline void xen_preemptible_hcall_begin(void)
127{
128}
129
130static inline void xen_preemptible_hcall_end(void)
131{
132}
133
134#else
135
136DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
137
138static inline void xen_preemptible_hcall_begin(void)
139{
140 __this_cpu_write(xen_in_preemptible_hcall, true);
141}
142
143static inline void xen_preemptible_hcall_end(void)
144{
145 __this_cpu_write(xen_in_preemptible_hcall, false);
146}
147
148#endif /* CONFIG_PREEMPT */
149
150#endif /* INCLUDE_XEN_OPS_H */