/*
    mapper config for 5.1 (3.6)
*/
#define VA_BITS                 (48)
#define BIT(nr)			(1UL << (nr))

#define CONFIG_ARM64_PA_BITS 48

#define __AC(X,Y)       (X##Y)
#define _AC(X,Y)        __AC(X,Y)
#define _UL(x)          (_AC(x, UL))
#define UL(x)           (_UL(x))

#define PAGE_OFFSET             (UL(0xffffffffffffffff) - \
        (UL(1) << (VA_BITS - 1)) + 1)

#define kimage_voffset  0xfffeffffd0000000
#define PHYS_OFFSET     0x0000000040000000

#define PTRS_PER_PTE                (1 << (PAGE_SHIFT - 3))
#define PTRS_PER_PMD                PTRS_PER_PTE
#define PMD_BLOCK_SHIFT 21

#define PAGE_SIZE          (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_SHIFT         12
#define PAGE_MASK          (~(PAGE_SIZE-1))

#define PGDIR_SHIFT           ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - CONFIG_PGTABLE_LEVELS)
#define ARM64_HW_PGTABLE_LEVEL_SHIFT(n)       ((PAGE_SHIFT - 3) * (4 - (n)) + 3)
#define CONFIG_PGTABLE_LEVELS 4

#define PTRS_PER_PGD          (1 << (MAX_USER_VA_BITS - PGDIR_SHIFT))
#define MAX_USER_VA_BITS     VA_BITS

#define PHYS_MASK            ((UL(1) << PHYS_MASK_SHIFT) - 1)
#define PHYS_MASK_SHIFT              (CONFIG_ARM64_PA_BITS)

#define PMD_SHIFT             ARM64_HW_PGTABLE_LEVEL_SHIFT(2)



#define __is_lm_address(addr)   (!!((addr) & BIT(VA_BITS - 1)))

#define __lm_to_phys(addr)      (((addr) & ~PAGE_OFFSET) + PHYS_OFFSET)
#define __kimg_to_phys(addr)    ((addr) - kimage_voffset)

#define __virt_to_phys_nodebug(x) ({                                    \
        phys_addr_t __x = (phys_addr_t)(x);                             \
        __is_lm_address(__x) ? __lm_to_phys(__x) :                      \
                               __kimg_to_phys(__x);                     \
})

inline static paddr_t kern_vtop(vaddr_t x)
{
	return __virt_to_phys_nodebug(x);
}