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_reboot(int reason);
  26
  27 void xen_resume_notifier_register(struct notifier_block *nb);
  28 void xen_resume_notifier_unregister(struct notifier_block *nb);
  29
  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);
  35
  36 int xen_setup_shutdown_event(void);
  37
  38 extern unsigned long *xen_contiguous_bitmap;
  39
  40 #ifdef CONFIG_XEN_PV
  41 int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
  42                                 unsigned int address_bits,
  43                                 dma_addr_t *dma_handle);
  44
  45 void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
  46 #else
  47 static inline int xen_create_contiguous_region(phys_addr_t pstart,
  48                                                unsigned int order,
  49                                                unsigned int address_bits,
  50                                                dma_addr_t *dma_handle)
  51 {
  52         return 0;
  53 }
  54
  55 static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
  56                                                  unsigned int order) { }
  57 #endif
  58
  59 struct vm_area_struct;
  60
  61 /*
  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
  71  *
  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.
  74  *
  75  * Returns the number of successfully mapped frames, or a -ve error
  76  * code.
  77  */
  78 int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
  79                                unsigned long addr,
  80                                xen_pfn_t *gfn, int nr,
  81                                int *err_ptr, pgprot_t prot,
  82                                unsigned domid,
  83                                struct page **pages);
  84
  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
  93  *
  94  * Returns the number of successfully mapped frames, or a -ve error
  95  * code.
  96  */
  97 int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
  98                                unsigned long addr,
  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,
 105                               unsigned long addr,
 106                               xen_pfn_t *gfn, int nr,
 107                               int *err_ptr, pgprot_t prot,
 108                               unsigned domid,
 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);
 114
 115 bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
 116
 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,
 120                                      efi_time_t *tm);
 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,
 124                                   void *data);
 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,
 129                                   void *data);
 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,
 138                                         int *reset_type);
 139 void xen_efi_reset_system(int reset_type, efi_status_t status,
 140                           unsigned long data_size, efi_char16_t *data);
 141
 142
 143 #ifdef CONFIG_PREEMPT
 144
 145 static inline void xen_preemptible_hcall_begin(void)
 146 {
 147 }
 148
 149 static inline void xen_preemptible_hcall_end(void)
 150 {
 151 }
 152
 153 #else
 154
 155 DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
 156
 157 static inline void xen_preemptible_hcall_begin(void)
 158 {
 159         __this_cpu_write(xen_in_preemptible_hcall, true);
 160 }
 161
 162 static inline void xen_preemptible_hcall_end(void)
 163 {
 164         __this_cpu_write(xen_in_preemptible_hcall, false);
 165 }
 166
 167 #endif /* CONFIG_PREEMPT */
 168
 169 #endif /* INCLUDE_XEN_OPS_H */