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 void xen_arch_pre_suspend(void);
19 void xen_arch_post_suspend(int suspend_cancelled);
21 void xen_timer_resume(void);
22 void xen_arch_resume(void);
23 void xen_arch_suspend(void);
25 void xen_reboot(int reason);
27 void xen_resume_notifier_register(struct notifier_block *nb);
28 void xen_resume_notifier_unregister(struct notifier_block *nb);
30 bool xen_vcpu_stolen(int vcpu);
31 void xen_setup_runstate_info(int cpu);
32 void xen_time_setup_guest(void);
33 void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
34 u64 xen_steal_clock(int cpu);
36 int xen_setup_shutdown_event(void);
38 extern unsigned long *xen_contiguous_bitmap;
41 int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
42 unsigned int address_bits,
43 dma_addr_t *dma_handle);
45 void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
47 static inline int xen_create_contiguous_region(phys_addr_t pstart,
49 unsigned int address_bits,
50 dma_addr_t *dma_handle)
55 static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
56 unsigned int order) { }
59 struct vm_area_struct;
62 * xen_remap_domain_gfn_array() - map an array of foreign frames
63 * @vma: VMA to map the pages into
64 * @addr: Address at which to map the pages
65 * @gfn: Array of GFNs to map
66 * @nr: Number entries in the GFN array
67 * @err_ptr: Returns per-GFN error status.
68 * @prot: page protection mask
69 * @domid: Domain owning the pages
70 * @pages: Array of pages if this domain has an auto-translated physmap
72 * @gfn and @err_ptr may point to the same buffer, the GFNs will be
73 * overwritten by the error codes after they are mapped.
75 * Returns the number of successfully mapped frames, or a -ve error
78 int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
80 xen_pfn_t *gfn, int nr,
81 int *err_ptr, pgprot_t prot,
85 /* xen_remap_domain_gfn_range() - map a range of foreign frames
86 * @vma: VMA to map the pages into
87 * @addr: Address at which to map the pages
88 * @gfn: First GFN to map.
89 * @nr: Number frames to map
90 * @prot: page protection mask
91 * @domid: Domain owning the pages
92 * @pages: Array of pages if this domain has an auto-translated physmap
94 * Returns the number of successfully mapped frames, or a -ve error
97 int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
99 xen_pfn_t gfn, int nr,
100 pgprot_t prot, unsigned domid,
101 struct page **pages);
102 int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
103 int numpgs, struct page **pages);
104 int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
106 xen_pfn_t *gfn, int nr,
107 int *err_ptr, pgprot_t prot,
109 struct page **pages);
110 int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
111 int nr, struct page **pages);
112 int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
113 unsigned long nr_grant_frames);
115 bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
117 efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
118 efi_status_t xen_efi_set_time(efi_time_t *tm);
119 efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
121 efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
122 efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
123 u32 *attr, unsigned long *data_size,
125 efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
126 efi_char16_t *name, efi_guid_t *vendor);
127 efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
128 u32 attr, unsigned long data_size,
130 efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
131 u64 *remaining_space,
132 u64 *max_variable_size);
133 efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
134 efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
135 unsigned long count, unsigned long sg_list);
136 efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
137 unsigned long count, u64 *max_size,
139 void xen_efi_reset_system(int reset_type, efi_status_t status,
140 unsigned long data_size, efi_char16_t *data);
143 #ifdef CONFIG_PREEMPT
145 static inline void xen_preemptible_hcall_begin(void)
149 static inline void xen_preemptible_hcall_end(void)
155 DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
157 static inline void xen_preemptible_hcall_begin(void)
159 __this_cpu_write(xen_in_preemptible_hcall, true);
162 static inline void xen_preemptible_hcall_end(void)
164 __this_cpu_write(xen_in_preemptible_hcall, false);
167 #endif /* CONFIG_PREEMPT */
169 #endif /* INCLUDE_XEN_OPS_H */