/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_SH_PGTABLE_3LEVEL_H#define __ASM_SH_PGTABLE_3LEVEL_H #include <asm-generic/pgtable-nopud.h> /* * Some cores need a 3-level page table layout, for example when using * 64-bit PTEs and 4K pages. */#define PAGETABLE_LEVELS	3 #define PTE_MAGNITUDE		3	/* 64-bit PTEs on SH-X2 TLB */ /* PGD bits */#define PGDIR_SHIFT		30 #define PTRS_PER_PGD		4#define USER_PTRS_PER_PGD	2 /* PMD bits */#define PMD_SHIFT	(PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))#define PMD_SIZE	(1UL << PMD_SHIFT)#define PMD_MASK	(~(PMD_SIZE-1)) #define PTRS_PER_PMD	((1 << PGDIR_SHIFT) / PMD_SIZE) #define pmd_ERROR(e) \	printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e)) typedef union {	struct {		unsigned long pmd_low;		unsigned long pmd_high;	};	unsigned long long pmd;} pmd_t;#define pmd_val(x)	((x).pmd)#define __pmd(x)	((pmd_t) { .pmd = (x) } ) static inline pmd_t *pud_pgtable(pud_t pud){	return (pmd_t *)(unsigned long)pud_val(pud);} /* only used by the stubbed out hugetlb gup code, should never be called */#define pud_page(pud)		NULL#define pud_none(x)	(!pud_val(x))#define pud_present(x)	(pud_val(x))#define pud_clear(xp)	do { set_pud(xp, __pud(0)); } while (0)#define	pud_bad(x)	(pud_val(x) & ~PAGE_MASK) /* * (puds are folded into pgds so this doesn't get actually called, * but the define is needed for a generic inline function.) */#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0) #endif /* __ASM_SH_PGTABLE_3LEVEL_H */