LXR linux/arch/arm64/kvm/hyp/include/nvhe/memory.h

   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
  10struct hyp_page {
  11        unsigned short refcount;
  12        unsigned short order;
  13};
  14
  15extern u64 __hyp_vmemmap;
  16#define hyp_vmemmap ((struct hyp_page *)__hyp_vmemmap)
  17
  18#define __hyp_va(phys)  ((void *)((phys_addr_t)(phys) - hyp_physvirt_offset))
  19
  20static inline void *hyp_phys_to_virt(phys_addr_t phys)
  21{
  22        return __hyp_va(phys);
  23}
  24
  25static inline phys_addr_t hyp_virt_to_phys(void *addr)
  26{
  27        return __hyp_pa(addr);
  28}
  29
  30#define hyp_phys_to_pfn(phys)   ((phys) >> PAGE_SHIFT)
  31#define hyp_pfn_to_phys(pfn)    ((phys_addr_t)((pfn) << PAGE_SHIFT))
  32#define hyp_phys_to_page(phys)  (&hyp_vmemmap[hyp_phys_to_pfn(phys)])
  33#define hyp_virt_to_page(virt)  hyp_phys_to_page(__hyp_pa(virt))
  34#define hyp_virt_to_pfn(virt)   hyp_phys_to_pfn(__hyp_pa(virt))
  35
  36#define hyp_page_to_pfn(page)   ((struct hyp_page *)(page) - hyp_vmemmap)
  37#define hyp_page_to_phys(page)  hyp_pfn_to_phys((hyp_page_to_pfn(page)))
  38#define hyp_page_to_virt(page)  __hyp_va(hyp_page_to_phys(page))
  39#define hyp_page_to_pool(page)  (((struct hyp_page *)page)->pool)
  40
  41static inline int hyp_page_count(void *addr)
  42{
  43        struct hyp_page *p = hyp_virt_to_page(addr);
  44
  45        return p->refcount;
  46}
  47
  48#endif /* __KVM_HYP_MEMORY_H */
  49