1 #ifndef INCLUDE_XEN_OPS_H
2 #define INCLUDE_XEN_OPS_H
4 #include <linux/percpu.h>
5 #include <linux/notifier.h>
7 #include <asm/xen/interface.h>
8 #include <xen/interface/vcpu.h>
10 DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
12 DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
13 static inline uint32_t xen_vcpu_nr(int cpu)
15 return per_cpu(xen_vcpu_id, cpu);
18 #define XEN_VCPU_ID_INVALID U32_MAX
20 void xen_arch_pre_suspend(void);
21 void xen_arch_post_suspend(int suspend_cancelled);
23 void xen_timer_resume(void);
24 void xen_arch_resume(void);
25 void xen_arch_suspend(void);
27 void xen_reboot(int reason);
29 void xen_resume_notifier_register(struct notifier_block *nb);
30 void xen_resume_notifier_unregister(struct notifier_block *nb);
32 bool xen_vcpu_stolen(int vcpu);
33 void xen_setup_runstate_info(int cpu);
34 void xen_time_setup_guest(void);
35 void xen_manage_runstate_time(int action);
36 void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
37 u64 xen_steal_clock(int cpu);
39 int xen_setup_shutdown_event(void);
41 extern unsigned long *xen_contiguous_bitmap;
44 int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
45 unsigned int address_bits,
46 dma_addr_t *dma_handle);
48 void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
50 static inline int xen_create_contiguous_region(phys_addr_t pstart,
52 unsigned int address_bits,
53 dma_addr_t *dma_handle)
58 static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
59 unsigned int order) { }
62 struct vm_area_struct;
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
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.
78 * Returns the number of successfully mapped frames, or a -ve error
81 int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
83 xen_pfn_t *gfn, int nr,
84 int *err_ptr, pgprot_t prot,
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
97 * Returns the number of successfully mapped frames, or a -ve error
100 int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
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);
108 #ifdef CONFIG_XEN_AUTO_XLATE
109 int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
111 xen_pfn_t *gfn, int nr,
112 int *err_ptr, pgprot_t prot,
114 struct page **pages);
115 int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
116 int nr, struct page **pages);
119 * These two functions are called from arch/x86/xen/mmu.c and so stubs
120 * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE.
122 static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
124 xen_pfn_t *gfn, int nr,
125 int *err_ptr, pgprot_t prot,
132 static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
133 int nr, struct page **pages)
139 int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
140 unsigned long nr_grant_frames);
142 bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
144 efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
145 efi_status_t xen_efi_set_time(efi_time_t *tm);
146 efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
148 efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
149 efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
150 u32 *attr, unsigned long *data_size,
152 efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
153 efi_char16_t *name, efi_guid_t *vendor);
154 efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
155 u32 attr, unsigned long data_size,
157 efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
158 u64 *remaining_space,
159 u64 *max_variable_size);
160 efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
161 efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
162 unsigned long count, unsigned long sg_list);
163 efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
164 unsigned long count, u64 *max_size,
166 void xen_efi_reset_system(int reset_type, efi_status_t status,
167 unsigned long data_size, efi_char16_t *data);
170 #ifdef CONFIG_PREEMPT
172 static inline void xen_preemptible_hcall_begin(void)
176 static inline void xen_preemptible_hcall_end(void)
182 DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
184 static inline void xen_preemptible_hcall_begin(void)
186 __this_cpu_write(xen_in_preemptible_hcall, true);
189 static inline void xen_preemptible_hcall_end(void)
191 __this_cpu_write(xen_in_preemptible_hcall, false);
194 #endif /* CONFIG_PREEMPT */
196 #endif /* INCLUDE_XEN_OPS_H */