Merge remote-tracking branch 'regulator/fix/qcom-spmi' into regulator-linus
[sfrench/cifs-2.6.git] / include / xen / 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
11 DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
12
13 DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
14 static 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
21 void xen_arch_pre_suspend(void);
22 void xen_arch_post_suspend(int suspend_cancelled);
23
24 void xen_timer_resume(void);
25 void xen_arch_resume(void);
26 void xen_arch_suspend(void);
27
28 void xen_reboot(int reason);
29
30 void xen_resume_notifier_register(struct notifier_block *nb);
31 void xen_resume_notifier_unregister(struct notifier_block *nb);
32
33 bool xen_vcpu_stolen(int vcpu);
34 void xen_setup_runstate_info(int cpu);
35 void xen_time_setup_guest(void);
36 void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
37 u64 xen_steal_clock(int cpu);
38
39 int xen_setup_shutdown_event(void);
40
41 extern unsigned long *xen_contiguous_bitmap;
42
43 #ifdef CONFIG_XEN_PV
44 int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
45                                 unsigned int address_bits,
46                                 dma_addr_t *dma_handle);
47
48 void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
49 #else
50 static inline int xen_create_contiguous_region(phys_addr_t pstart,
51                                                unsigned int order,
52                                                unsigned int address_bits,
53                                                dma_addr_t *dma_handle)
54 {
55         return 0;
56 }
57
58 static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
59                                                  unsigned int order) { }
60 #endif
61
62 struct vm_area_struct;
63
64 /*
65  * xen_remap_domain_gfn_array() - map an array of foreign frames
66  * @vma:     VMA to map the pages into
67  * @addr:    Address at which to map the pages
68  * @gfn:     Array of GFNs to map
69  * @nr:      Number entries in the GFN array
70  * @err_ptr: Returns per-GFN error status.
71  * @prot:    page protection mask
72  * @domid:   Domain owning the pages
73  * @pages:   Array of pages if this domain has an auto-translated physmap
74  *
75  * @gfn and @err_ptr may point to the same buffer, the GFNs will be
76  * overwritten by the error codes after they are mapped.
77  *
78  * Returns the number of successfully mapped frames, or a -ve error
79  * code.
80  */
81 int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
82                                unsigned long addr,
83                                xen_pfn_t *gfn, int nr,
84                                int *err_ptr, pgprot_t prot,
85                                unsigned domid,
86                                struct page **pages);
87
88 /* xen_remap_domain_gfn_range() - map a range of foreign frames
89  * @vma:     VMA to map the pages into
90  * @addr:    Address at which to map the pages
91  * @gfn:     First GFN to map.
92  * @nr:      Number frames to map
93  * @prot:    page protection mask
94  * @domid:   Domain owning the pages
95  * @pages:   Array of pages if this domain has an auto-translated physmap
96  *
97  * Returns the number of successfully mapped frames, or a -ve error
98  * code.
99  */
100 int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
101                                unsigned long addr,
102                                xen_pfn_t gfn, int nr,
103                                pgprot_t prot, unsigned domid,
104                                struct page **pages);
105 int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
106                                int numpgs, struct page **pages);
107 int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
108                               unsigned long addr,
109                               xen_pfn_t *gfn, int nr,
110                               int *err_ptr, pgprot_t prot,
111                               unsigned domid,
112                               struct page **pages);
113 int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
114                               int nr, struct page **pages);
115 int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
116                                   unsigned long nr_grant_frames);
117
118 bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
119
120 efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
121 efi_status_t xen_efi_set_time(efi_time_t *tm);
122 efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
123                                      efi_time_t *tm);
124 efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
125 efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
126                                   u32 *attr, unsigned long *data_size,
127                                   void *data);
128 efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
129                                        efi_char16_t *name, efi_guid_t *vendor);
130 efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
131                                   u32 attr, unsigned long data_size,
132                                   void *data);
133 efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
134                                          u64 *remaining_space,
135                                          u64 *max_variable_size);
136 efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
137 efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
138                                     unsigned long count, unsigned long sg_list);
139 efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
140                                         unsigned long count, u64 *max_size,
141                                         int *reset_type);
142 void xen_efi_reset_system(int reset_type, efi_status_t status,
143                           unsigned long data_size, efi_char16_t *data);
144
145
146 #ifdef CONFIG_PREEMPT
147
148 static inline void xen_preemptible_hcall_begin(void)
149 {
150 }
151
152 static inline void xen_preemptible_hcall_end(void)
153 {
154 }
155
156 #else
157
158 DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
159
160 static inline void xen_preemptible_hcall_begin(void)
161 {
162         __this_cpu_write(xen_in_preemptible_hcall, true);
163 }
164
165 static inline void xen_preemptible_hcall_end(void)
166 {
167         __this_cpu_write(xen_in_preemptible_hcall, false);
168 }
169
170 #endif /* CONFIG_PREEMPT */
171
172 #endif /* INCLUDE_XEN_OPS_H */