| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef INCLUDE_XEN_OPS_H |
| #define INCLUDE_XEN_OPS_H |
| |
| #include <linux/percpu.h> |
| #include <linux/notifier.h> |
| #include <linux/efi.h> |
| #include <asm/xen/interface.h> |
| #include <xen/interface/vcpu.h> |
| |
| DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu); |
| |
| DECLARE_PER_CPU(uint32_t, xen_vcpu_id); |
| static inline uint32_t xen_vcpu_nr(int cpu) |
| { |
| return per_cpu(xen_vcpu_id, cpu); |
| } |
| |
| #define XEN_VCPU_ID_INVALID U32_MAX |
| |
| void xen_arch_pre_suspend(void); |
| void xen_arch_post_suspend(int suspend_cancelled); |
| |
| void xen_timer_resume(void); |
| void xen_arch_resume(void); |
| void xen_arch_suspend(void); |
| |
| void xen_reboot(int reason); |
| |
| void xen_resume_notifier_register(struct notifier_block *nb); |
| void xen_resume_notifier_unregister(struct notifier_block *nb); |
| |
| bool xen_vcpu_stolen(int vcpu); |
| void xen_setup_runstate_info(int cpu); |
| void xen_time_setup_guest(void); |
| void xen_manage_runstate_time(int action); |
| void xen_get_runstate_snapshot(struct vcpu_runstate_info *res); |
| u64 xen_steal_clock(int cpu); |
| |
| int xen_setup_shutdown_event(void); |
| |
| extern unsigned long *xen_contiguous_bitmap; |
| |
| #if defined(CONFIG_XEN_PV) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) |
| int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, |
| unsigned int address_bits, |
| dma_addr_t *dma_handle); |
| |
| void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order); |
| #else |
| static inline int xen_create_contiguous_region(phys_addr_t pstart, |
| unsigned int order, |
| unsigned int address_bits, |
| dma_addr_t *dma_handle) |
| { |
| return 0; |
| } |
| |
| static inline void xen_destroy_contiguous_region(phys_addr_t pstart, |
| unsigned int order) { } |
| #endif |
| |
| struct vm_area_struct; |
| |
| /* |
| * xen_remap_domain_gfn_array() - map an array of foreign frames by gfn |
| * @vma: VMA to map the pages into |
| * @addr: Address at which to map the pages |
| * @gfn: Array of GFNs to map |
| * @nr: Number entries in the GFN array |
| * @err_ptr: Returns per-GFN error status. |
| * @prot: page protection mask |
| * @domid: Domain owning the pages |
| * @pages: Array of pages if this domain has an auto-translated physmap |
| * |
| * @gfn and @err_ptr may point to the same buffer, the GFNs will be |
| * overwritten by the error codes after they are mapped. |
| * |
| * Returns the number of successfully mapped frames, or a -ve error |
| * code. |
| */ |
| int xen_remap_domain_gfn_array(struct vm_area_struct *vma, |
| unsigned long addr, |
| xen_pfn_t *gfn, int nr, |
| int *err_ptr, pgprot_t prot, |
| unsigned domid, |
| struct page **pages); |
| |
| /* |
| * xen_remap_domain_mfn_array() - map an array of foreign frames by mfn |
| * @vma: VMA to map the pages into |
| * @addr: Address at which to map the pages |
| * @mfn: Array of MFNs to map |
| * @nr: Number entries in the MFN array |
| * @err_ptr: Returns per-MFN error status. |
| * @prot: page protection mask |
| * @domid: Domain owning the pages |
| * @pages: Array of pages if this domain has an auto-translated physmap |
| * |
| * @mfn and @err_ptr may point to the same buffer, the MFNs will be |
| * overwritten by the error codes after they are mapped. |
| * |
| * Returns the number of successfully mapped frames, or a -ve error |
| * code. |
| */ |
| int xen_remap_domain_mfn_array(struct vm_area_struct *vma, |
| unsigned long addr, xen_pfn_t *mfn, int nr, |
| int *err_ptr, pgprot_t prot, |
| unsigned int domid, struct page **pages); |
| |
| /* xen_remap_domain_gfn_range() - map a range of foreign frames |
| * @vma: VMA to map the pages into |
| * @addr: Address at which to map the pages |
| * @gfn: First GFN to map. |
| * @nr: Number frames to map |
| * @prot: page protection mask |
| * @domid: Domain owning the pages |
| * @pages: Array of pages if this domain has an auto-translated physmap |
| * |
| * Returns the number of successfully mapped frames, or a -ve error |
| * code. |
| */ |
| int xen_remap_domain_gfn_range(struct vm_area_struct *vma, |
| unsigned long addr, |
| xen_pfn_t gfn, int nr, |
| pgprot_t prot, unsigned domid, |
| struct page **pages); |
| int xen_unmap_domain_gfn_range(struct vm_area_struct *vma, |
| int numpgs, struct page **pages); |
| |
| #ifdef CONFIG_XEN_AUTO_XLATE |
| int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, |
| unsigned long addr, |
| xen_pfn_t *gfn, int nr, |
| int *err_ptr, pgprot_t prot, |
| unsigned domid, |
| struct page **pages); |
| int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, |
| int nr, struct page **pages); |
| #else |
| /* |
| * These two functions are called from arch/x86/xen/mmu.c and so stubs |
| * are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE. |
| */ |
| static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, |
| unsigned long addr, |
| xen_pfn_t *gfn, int nr, |
| int *err_ptr, pgprot_t prot, |
| unsigned int domid, |
| struct page **pages) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, |
| int nr, struct page **pages) |
| { |
| return -EOPNOTSUPP; |
| } |
| #endif |
| |
| int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr, |
| unsigned long nr_grant_frames); |
| |
| bool xen_running_on_version_or_later(unsigned int major, unsigned int minor); |
| |
| efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc); |
| efi_status_t xen_efi_set_time(efi_time_t *tm); |
| efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending, |
| efi_time_t *tm); |
| efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm); |
| efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor, |
| u32 *attr, unsigned long *data_size, |
| void *data); |
| efi_status_t xen_efi_get_next_variable(unsigned long *name_size, |
| efi_char16_t *name, efi_guid_t *vendor); |
| efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor, |
| u32 attr, unsigned long data_size, |
| void *data); |
| efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space, |
| u64 *remaining_space, |
| u64 *max_variable_size); |
| efi_status_t xen_efi_get_next_high_mono_count(u32 *count); |
| efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules, |
| unsigned long count, unsigned long sg_list); |
| efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules, |
| unsigned long count, u64 *max_size, |
| int *reset_type); |
| void xen_efi_reset_system(int reset_type, efi_status_t status, |
| unsigned long data_size, efi_char16_t *data); |
| |
| |
| #ifdef CONFIG_PREEMPT |
| |
| static inline void xen_preemptible_hcall_begin(void) |
| { |
| } |
| |
| static inline void xen_preemptible_hcall_end(void) |
| { |
| } |
| |
| #else |
| |
| DECLARE_PER_CPU(bool, xen_in_preemptible_hcall); |
| |
| static inline void xen_preemptible_hcall_begin(void) |
| { |
| __this_cpu_write(xen_in_preemptible_hcall, true); |
| } |
| |
| static inline void xen_preemptible_hcall_end(void) |
| { |
| __this_cpu_write(xen_in_preemptible_hcall, false); |
| } |
| |
| #endif /* CONFIG_PREEMPT */ |
| |
| #endif /* INCLUDE_XEN_OPS_H */ |