1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef INCLUDE_XEN_OPS_H
3 #define INCLUDE_XEN_OPS_H
5 #include <linux/percpu.h>
6 #include <linux/notifier.h>
8 #include <asm/xen/interface.h>
9 #include <xen/interface/vcpu.h>
11 DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
13 DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
14 static inline uint32_t xen_vcpu_nr(int cpu)
16 return per_cpu(xen_vcpu_id, cpu);
19 #define XEN_VCPU_ID_INVALID U32_MAX
21 void xen_arch_pre_suspend(void);
22 void xen_arch_post_suspend(int suspend_cancelled);
24 void xen_timer_resume(void);
25 void xen_arch_resume(void);
26 void xen_arch_suspend(void);
28 void xen_reboot(int reason);
30 void xen_resume_notifier_register(struct notifier_block *nb);
31 void xen_resume_notifier_unregister(struct notifier_block *nb);
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_manage_runstate_time(int action);
37 void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
38 u64 xen_steal_clock(int cpu);
40 int xen_setup_shutdown_event(void);
42 extern unsigned long *xen_contiguous_bitmap;
45 int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
46 unsigned int address_bits,
47 dma_addr_t *dma_handle);
49 void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
51 static inline int xen_create_contiguous_region(phys_addr_t pstart,
53 unsigned int address_bits,
54 dma_addr_t *dma_handle)
59 static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
60 unsigned int order) { }
63 struct vm_area_struct;
66 * xen_remap_domain_gfn_array() - map an array of foreign frames by gfn
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
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.
79 * Returns the number of successfully mapped frames, or a -ve error
82 int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
84 xen_pfn_t *gfn, int nr,
85 int *err_ptr, pgprot_t prot,
90 * xen_remap_domain_mfn_array() - map an array of foreign frames by mfn
91 * @vma: VMA to map the pages into
92 * @addr: Address at which to map the pages
93 * @mfn: Array of MFNs to map
94 * @nr: Number entries in the MFN array
95 * @err_ptr: Returns per-MFN error status.
96 * @prot: page protection mask
97 * @domid: Domain owning the pages
98 * @pages: Array of pages if this domain has an auto-translated physmap
100 * @mfn and @err_ptr may point to the same buffer, the MFNs will be
101 * overwritten by the error codes after they are mapped.
103 * Returns the number of successfully mapped frames, or a -ve error
106 int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
107 unsigned long addr, xen_pfn_t *mfn, int nr,
108 int *err_ptr, pgprot_t prot,
109 unsigned int domid, struct page **pages);
111 /* xen_remap_domain_gfn_range() - map a range of foreign frames
112 * @vma: VMA to map the pages into
113 * @addr: Address at which to map the pages
114 * @gfn: First GFN to map.
115 * @nr: Number frames to map
116 * @prot: page protection mask
117 * @domid: Domain owning the pages
118 * @pages: Array of pages if this domain has an auto-translated physmap
120 * Returns the number of successfully mapped frames, or a -ve error
123 int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
125 xen_pfn_t gfn, int nr,
126 pgprot_t prot, unsigned domid,
127 struct page **pages);
128 int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
129 int numpgs, struct page **pages);
131 #ifdef CONFIG_XEN_AUTO_XLATE
132 int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
134 xen_pfn_t *gfn, int nr,
135 int *err_ptr, pgprot_t prot,
137 struct page **pages);
138 int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
139 int nr, struct page **pages);
142 * These two functions are called from arch/x86/xen/mmu.c and so stubs
143 * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE.
145 static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
147 xen_pfn_t *gfn, int nr,
148 int *err_ptr, pgprot_t prot,
155 static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
156 int nr, struct page **pages)
162 int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
163 unsigned long nr_grant_frames);
165 bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
167 efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
168 efi_status_t xen_efi_set_time(efi_time_t *tm);
169 efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
171 efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
172 efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
173 u32 *attr, unsigned long *data_size,
175 efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
176 efi_char16_t *name, efi_guid_t *vendor);
177 efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
178 u32 attr, unsigned long data_size,
180 efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
181 u64 *remaining_space,
182 u64 *max_variable_size);
183 efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
184 efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
185 unsigned long count, unsigned long sg_list);
186 efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
187 unsigned long count, u64 *max_size,
189 void xen_efi_reset_system(int reset_type, efi_status_t status,
190 unsigned long data_size, efi_char16_t *data);
193 #ifdef CONFIG_PREEMPT
195 static inline void xen_preemptible_hcall_begin(void)
199 static inline void xen_preemptible_hcall_end(void)
205 DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
207 static inline void xen_preemptible_hcall_begin(void)
209 __this_cpu_write(xen_in_preemptible_hcall, true);
212 static inline void xen_preemptible_hcall_end(void)
214 __this_cpu_write(xen_in_preemptible_hcall, false);
217 #endif /* CONFIG_PREEMPT */
219 #endif /* INCLUDE_XEN_OPS_H */