1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef __KVM_HYP_MEMORY_H 3 #define __KVM_HYP_MEMORY_H 4 5 #include <asm/kvm_mmu.h> 6 #include <asm/page.h> 7 8 #include <linux/types.h> 9 10 struct hyp_pool; 11 struct hyp_page { 12 unsigned int refcount; 13 unsigned int order; 14 struct hyp_pool *pool; 15 struct list_head node; 16 }; 17 18 extern u64 __hyp_vmemmap; 19 #define hyp_vmemmap ((struct hyp_page *)__hyp_vmemmap) 20 21 #define __hyp_va(phys) ((void *)((phys_addr_t)(phys) - hyp_physvirt_offset)) 22 23 static inline void *hyp_phys_to_virt(phys_addr_t phys) 24 { 25 return __hyp_va(phys); 26 } 27 28 static inline phys_addr_t hyp_virt_to_phys(void *addr) 29 { 30 return __hyp_pa(addr); 31 } 32 33 #define hyp_phys_to_pfn(phys) ((phys) >> PAGE_SHIFT) 34 #define hyp_pfn_to_phys(pfn) ((phys_addr_t)((pfn) << PAGE_SHIFT)) 35 #define hyp_phys_to_page(phys) (&hyp_vmemmap[hyp_phys_to_pfn(phys)]) 36 #define hyp_virt_to_page(virt) hyp_phys_to_page(__hyp_pa(virt)) 37 #define hyp_virt_to_pfn(virt) hyp_phys_to_pfn(__hyp_pa(virt)) 38 39 #define hyp_page_to_pfn(page) ((struct hyp_page *)(page) - hyp_vmemmap) 40 #define hyp_page_to_phys(page) hyp_pfn_to_phys((hyp_page_to_pfn(page))) 41 #define hyp_page_to_virt(page) __hyp_va(hyp_page_to_phys(page)) 42 #define hyp_page_to_pool(page) (((struct hyp_page *)page)->pool) 43 44 static inline int hyp_page_count(void *addr) 45 { 46 struct hyp_page *p = hyp_virt_to_page(addr); 47 48 return p->refcount; 49 } 50 51 #endif /* __KVM_HYP_MEMORY_H */ 52