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 9DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu); 10 11void xen_arch_pre_suspend(void); 12void xen_arch_post_suspend(int suspend_cancelled); 13 14void xen_timer_resume(void); 15void xen_arch_resume(void); 16void xen_arch_suspend(void); 17 18void xen_resume_notifier_register(struct notifier_block *nb); 19void xen_resume_notifier_unregister(struct notifier_block *nb); 20 21int xen_setup_shutdown_event(void); 22 23extern unsigned long *xen_contiguous_bitmap; 24int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, 25 unsigned int address_bits, 26 dma_addr_t *dma_handle); 27 28void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order); 29 30struct vm_area_struct; 31 32/* 33 * xen_remap_domain_mfn_array() - map an array of foreign frames 34 * @vma: VMA to map the pages into 35 * @addr: Address at which to map the pages 36 * @gfn: Array of GFNs to map 37 * @nr: Number entries in the GFN array 38 * @err_ptr: Returns per-GFN error status. 39 * @prot: page protection mask 40 * @domid: Domain owning the pages 41 * @pages: Array of pages if this domain has an auto-translated physmap 42 * 43 * @gfn and @err_ptr may point to the same buffer, the GFNs will be 44 * overwritten by the error codes after they are mapped. 45 * 46 * Returns the number of successfully mapped frames, or a -ve error 47 * code. 48 */ 49int xen_remap_domain_mfn_array(struct vm_area_struct *vma, 50 unsigned long addr, 51 xen_pfn_t *gfn, int nr, 52 int *err_ptr, pgprot_t prot, 53 unsigned domid, 54 struct page **pages); 55 56/* xen_remap_domain_mfn_range() - map a range of foreign frames 57 * @vma: VMA to map the pages into 58 * @addr: Address at which to map the pages 59 * @gfn: First GFN to map. 60 * @nr: Number frames to map 61 * @prot: page protection mask 62 * @domid: Domain owning the pages 63 * @pages: Array of pages if this domain has an auto-translated physmap 64 * 65 * Returns the number of successfully mapped frames, or a -ve error 66 * code. 67 */ 68int xen_remap_domain_mfn_range(struct vm_area_struct *vma, 69 unsigned long addr, 70 xen_pfn_t gfn, int nr, 71 pgprot_t prot, unsigned domid, 72 struct page **pages); 73int xen_unmap_domain_mfn_range(struct vm_area_struct *vma, 74 int numpgs, struct page **pages); 75int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, 76 unsigned long addr, 77 xen_pfn_t *gfn, int nr, 78 int *err_ptr, pgprot_t prot, 79 unsigned domid, 80 struct page **pages); 81int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, 82 int nr, struct page **pages); 83 84bool xen_running_on_version_or_later(unsigned int major, unsigned int minor); 85 86#ifdef CONFIG_XEN_EFI 87extern efi_system_table_t *xen_efi_probe(void); 88#else 89static inline efi_system_table_t __init *xen_efi_probe(void) 90{ 91 return NULL; 92} 93#endif 94 95#ifdef CONFIG_PREEMPT 96 97static inline void xen_preemptible_hcall_begin(void) 98{ 99} 100 101static inline void xen_preemptible_hcall_end(void) 102{ 103} 104 105#else 106 107DECLARE_PER_CPU(bool, xen_in_preemptible_hcall); 108 109static inline void xen_preemptible_hcall_begin(void) 110{ 111 __this_cpu_write(xen_in_preemptible_hcall, true); 112} 113 114static inline void xen_preemptible_hcall_end(void) 115{ 116 __this_cpu_write(xen_in_preemptible_hcall, false); 117} 118 119#endif /* CONFIG_PREEMPT */ 120 121#endif /* INCLUDE_XEN_OPS_H */ 122