include/xen/xen-ops.h

   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
  10 DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
  11
  12 DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
  13 static inline uint32_t xen_vcpu_nr(int cpu)
  14 {
  15         return per_cpu(xen_vcpu_id, cpu);
  16 }
  17
  18 void xen_arch_pre_suspend(void);
  19 void xen_arch_post_suspend(int suspend_cancelled);
  20
  21 void xen_timer_resume(void);
  22 void xen_arch_resume(void);
  23 void xen_arch_suspend(void);
  24
  25 void xen_resume_notifier_register(struct notifier_block *nb);
  26 void xen_resume_notifier_unregister(struct notifier_block *nb);
  27
  28 bool xen_vcpu_stolen(int vcpu);
  29 void xen_setup_runstate_info(int cpu);
  30 void xen_time_setup_guest(void);
  31 void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
  32 u64 xen_steal_clock(int cpu);
  33
  34 int xen_setup_shutdown_event(void);
  35
  36 extern unsigned long *xen_contiguous_bitmap;
  37 int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
  38                                 unsigned int address_bits,
  39                                 dma_addr_t *dma_handle);
  40
  41 void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
  42
  43 struct vm_area_struct;
  44
  45 /*
  46  * xen_remap_domain_gfn_array() - map an array of foreign frames
  47  * @vma:     VMA to map the pages into
  48  * @addr:    Address at which to map the pages
  49  * @gfn:     Array of GFNs to map
  50  * @nr:      Number entries in the GFN array
  51  * @err_ptr: Returns per-GFN error status.
  52  * @prot:    page protection mask
  53  * @domid:   Domain owning the pages
  54  * @pages:   Array of pages if this domain has an auto-translated physmap
  55  *
  56  * @gfn and @err_ptr may point to the same buffer, the GFNs will be
  57  * overwritten by the error codes after they are mapped.
  58  *
  59  * Returns the number of successfully mapped frames, or a -ve error
  60  * code.
  61  */
  62 int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
  63                                unsigned long addr,
  64                                xen_pfn_t *gfn, int nr,
  65                                int *err_ptr, pgprot_t prot,
  66                                unsigned domid,
  67                                struct page **pages);
  68
  69 /* xen_remap_domain_gfn_range() - map a range of foreign frames
  70  * @vma:     VMA to map the pages into
  71  * @addr:    Address at which to map the pages
  72  * @gfn:     First GFN to map.
  73  * @nr:      Number frames to map
  74  * @prot:    page protection mask
  75  * @domid:   Domain owning the pages
  76  * @pages:   Array of pages if this domain has an auto-translated physmap
  77  *
  78  * Returns the number of successfully mapped frames, or a -ve error
  79  * code.
  80  */
  81 int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
  82                                unsigned long addr,
  83                                xen_pfn_t gfn, int nr,
  84                                pgprot_t prot, unsigned domid,
  85                                struct page **pages);
  86 int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
  87                                int numpgs, struct page **pages);
  88 int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
  89                               unsigned long addr,
  90                               xen_pfn_t *gfn, int nr,
  91                               int *err_ptr, pgprot_t prot,
  92                               unsigned domid,
  93                               struct page **pages);
  94 int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
  95                               int nr, struct page **pages);
  96 int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
  97                                   unsigned long nr_grant_frames);
  98
  99 bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
 100
 101 efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
 102 efi_status_t xen_efi_set_time(efi_time_t *tm);
 103 efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
 104                                      efi_time_t *tm);
 105 efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
 106 efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
 107                                   u32 *attr, unsigned long *data_size,
 108                                   void *data);
 109 efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
 110                                        efi_char16_t *name, efi_guid_t *vendor);
 111 efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
 112                                   u32 attr, unsigned long data_size,
 113                                   void *data);
 114 efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
 115                                          u64 *remaining_space,
 116                                          u64 *max_variable_size);
 117 efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
 118 efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
 119                                     unsigned long count, unsigned long sg_list);
 120 efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
 121                                         unsigned long count, u64 *max_size,
 122                                         int *reset_type);
 123
 124 #ifdef CONFIG_PREEMPT
 125
 126 static inline void xen_preemptible_hcall_begin(void)
 127 {
 128 }
 129
 130 static inline void xen_preemptible_hcall_end(void)
 131 {
 132 }
 133
 134 #else
 135
 136 DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
 137
 138 static inline void xen_preemptible_hcall_begin(void)
 139 {
 140         __this_cpu_write(xen_in_preemptible_hcall, true);
 141 }
 142
 143 static inline void xen_preemptible_hcall_end(void)
 144 {
 145         __this_cpu_write(xen_in_preemptible_hcall, false);
 146 }
 147
 148 #endif /* CONFIG_PREEMPT */
 149
 150 #endif /* INCLUDE_XEN_OPS_H */