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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
12void xen_arch_pre_suspend(void);
13void xen_arch_post_suspend(int suspend_cancelled);
14
15void xen_timer_resume(void);
16void xen_arch_resume(void);
17void xen_arch_suspend(void);
18
19void xen_resume_notifier_register(struct notifier_block *nb);
20void xen_resume_notifier_unregister(struct notifier_block *nb);
21
22bool xen_vcpu_stolen(int vcpu);
23void xen_setup_runstate_info(int cpu);
24void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
25
26int xen_setup_shutdown_event(void);
27
28extern unsigned long *xen_contiguous_bitmap;
29int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
30 unsigned int address_bits,
31 dma_addr_t *dma_handle);
32
33void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
34
35struct vm_area_struct;
36
37/*
38 * xen_remap_domain_gfn_array() - map an array of foreign frames
39 * @vma: VMA to map the pages into
40 * @addr: Address at which to map the pages
41 * @gfn: Array of GFNs to map
42 * @nr: Number entries in the GFN array
43 * @err_ptr: Returns per-GFN error status.
44 * @prot: page protection mask
45 * @domid: Domain owning the pages
46 * @pages: Array of pages if this domain has an auto-translated physmap
47 *
48 * @gfn and @err_ptr may point to the same buffer, the GFNs will be
49 * overwritten by the error codes after they are mapped.
50 *
51 * Returns the number of successfully mapped frames, or a -ve error
52 * code.
53 */
54int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
55 unsigned long addr,
56 xen_pfn_t *gfn, int nr,
57 int *err_ptr, pgprot_t prot,
58 unsigned domid,
59 struct page **pages);
60
61/* xen_remap_domain_gfn_range() - map a range of foreign frames
62 * @vma: VMA to map the pages into
63 * @addr: Address at which to map the pages
64 * @gfn: First GFN to map.
65 * @nr: Number frames to map
66 * @prot: page protection mask
67 * @domid: Domain owning the pages
68 * @pages: Array of pages if this domain has an auto-translated physmap
69 *
70 * Returns the number of successfully mapped frames, or a -ve error
71 * code.
72 */
73int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
74 unsigned long addr,
75 xen_pfn_t gfn, int nr,
76 pgprot_t prot, unsigned domid,
77 struct page **pages);
78int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
79 int numpgs, struct page **pages);
80int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
81 unsigned long addr,
82 xen_pfn_t *gfn, int nr,
83 int *err_ptr, pgprot_t prot,
84 unsigned domid,
85 struct page **pages);
86int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
87 int nr, struct page **pages);
88
89bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
90
91#ifdef CONFIG_XEN_EFI
92extern efi_system_table_t *xen_efi_probe(void);
93#else
94static inline efi_system_table_t __init *xen_efi_probe(void)
95{
96 return NULL;
97}
98#endif
99
100#ifdef CONFIG_PREEMPT
101
102static inline void xen_preemptible_hcall_begin(void)
103{
104}
105
106static inline void xen_preemptible_hcall_end(void)
107{
108}
109
110#else
111
112DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
113
114static inline void xen_preemptible_hcall_begin(void)
115{
116 __this_cpu_write(xen_in_preemptible_hcall, true);
117}
118
119static inline void xen_preemptible_hcall_end(void)
120{
121 __this_cpu_write(xen_in_preemptible_hcall, false);
122}
123
124#endif /* CONFIG_PREEMPT */
125
126#endif /* INCLUDE_XEN_OPS_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef INCLUDE_XEN_OPS_H
3#define INCLUDE_XEN_OPS_H
4
5#include <linux/percpu.h>
6#include <linux/notifier.h>
7#include <linux/efi.h>
8#include <asm/xen/interface.h>
9#include <xen/interface/vcpu.h>
10
11DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
12
13DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
14static inline uint32_t xen_vcpu_nr(int cpu)
15{
16 return per_cpu(xen_vcpu_id, cpu);
17}
18
19#define XEN_VCPU_ID_INVALID U32_MAX
20
21void xen_arch_pre_suspend(void);
22void xen_arch_post_suspend(int suspend_cancelled);
23
24void xen_timer_resume(void);
25void xen_arch_resume(void);
26void xen_arch_suspend(void);
27
28void xen_reboot(int reason);
29
30void xen_resume_notifier_register(struct notifier_block *nb);
31void xen_resume_notifier_unregister(struct notifier_block *nb);
32
33bool xen_vcpu_stolen(int vcpu);
34void xen_setup_runstate_info(int cpu);
35void xen_time_setup_guest(void);
36void xen_manage_runstate_time(int action);
37void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
38u64 xen_steal_clock(int cpu);
39
40int xen_setup_shutdown_event(void);
41
42extern unsigned long *xen_contiguous_bitmap;
43
44#ifdef CONFIG_XEN_PV
45int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
46 unsigned int address_bits,
47 dma_addr_t *dma_handle);
48
49void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
50#else
51static inline int xen_create_contiguous_region(phys_addr_t pstart,
52 unsigned int order,
53 unsigned int address_bits,
54 dma_addr_t *dma_handle)
55{
56 return 0;
57}
58
59static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
60 unsigned int order) { }
61#endif
62
63struct vm_area_struct;
64
65/*
66 * xen_remap_domain_gfn_array() - map an array of foreign frames
67 * @vma: VMA to map the pages into
68 * @addr: Address at which to map the pages
69 * @gfn: Array of GFNs to map
70 * @nr: Number entries in the GFN array
71 * @err_ptr: Returns per-GFN error status.
72 * @prot: page protection mask
73 * @domid: Domain owning the pages
74 * @pages: Array of pages if this domain has an auto-translated physmap
75 *
76 * @gfn and @err_ptr may point to the same buffer, the GFNs will be
77 * overwritten by the error codes after they are mapped.
78 *
79 * Returns the number of successfully mapped frames, or a -ve error
80 * code.
81 */
82int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
83 unsigned long addr,
84 xen_pfn_t *gfn, int nr,
85 int *err_ptr, pgprot_t prot,
86 unsigned domid,
87 struct page **pages);
88
89/* xen_remap_domain_gfn_range() - map a range of foreign frames
90 * @vma: VMA to map the pages into
91 * @addr: Address at which to map the pages
92 * @gfn: First GFN to map.
93 * @nr: Number frames to map
94 * @prot: page protection mask
95 * @domid: Domain owning the pages
96 * @pages: Array of pages if this domain has an auto-translated physmap
97 *
98 * Returns the number of successfully mapped frames, or a -ve error
99 * code.
100 */
101int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
102 unsigned long addr,
103 xen_pfn_t gfn, int nr,
104 pgprot_t prot, unsigned domid,
105 struct page **pages);
106int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
107 int numpgs, struct page **pages);
108
109#ifdef CONFIG_XEN_AUTO_XLATE
110int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
111 unsigned long addr,
112 xen_pfn_t *gfn, int nr,
113 int *err_ptr, pgprot_t prot,
114 unsigned domid,
115 struct page **pages);
116int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
117 int nr, struct page **pages);
118#else
119/*
120 * These two functions are called from arch/x86/xen/mmu.c and so stubs
121 * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE.
122 */
123static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
124 unsigned long addr,
125 xen_pfn_t *gfn, int nr,
126 int *err_ptr, pgprot_t prot,
127 unsigned int domid,
128 struct page **pages)
129{
130 return -EOPNOTSUPP;
131}
132
133static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
134 int nr, struct page **pages)
135{
136 return -EOPNOTSUPP;
137}
138#endif
139
140int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
141 unsigned long nr_grant_frames);
142
143bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
144
145efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
146efi_status_t xen_efi_set_time(efi_time_t *tm);
147efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
148 efi_time_t *tm);
149efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
150efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
151 u32 *attr, unsigned long *data_size,
152 void *data);
153efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
154 efi_char16_t *name, efi_guid_t *vendor);
155efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
156 u32 attr, unsigned long data_size,
157 void *data);
158efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
159 u64 *remaining_space,
160 u64 *max_variable_size);
161efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
162efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
163 unsigned long count, unsigned long sg_list);
164efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
165 unsigned long count, u64 *max_size,
166 int *reset_type);
167void xen_efi_reset_system(int reset_type, efi_status_t status,
168 unsigned long data_size, efi_char16_t *data);
169
170
171#ifdef CONFIG_PREEMPT
172
173static inline void xen_preemptible_hcall_begin(void)
174{
175}
176
177static inline void xen_preemptible_hcall_end(void)
178{
179}
180
181#else
182
183DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
184
185static inline void xen_preemptible_hcall_begin(void)
186{
187 __this_cpu_write(xen_in_preemptible_hcall, true);
188}
189
190static inline void xen_preemptible_hcall_end(void)
191{
192 __this_cpu_write(xen_in_preemptible_hcall, false);
193}
194
195#endif /* CONFIG_PREEMPT */
196
197#endif /* INCLUDE_XEN_OPS_H */