#ifndef __ASM_SH_PGTABLE_2LEVEL_H#define __ASM_SH_PGTABLE_2LEVEL_H /* * traditional two-level paging structure: */ #define PGDIR_SHIFT	22#define PTRS_PER_PGD	1024 /* * this is two-level, so we don't really have any * PMD directory physically. */#define PMD_SHIFT	22#define PTRS_PER_PMD	1 #define PTRS_PER_PTE	1024 #ifndef __ASSEMBLY__#define pte_ERROR(e) \	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))#define pmd_ERROR(e) \	printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))#define pgd_ERROR(e) \	printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) /* * The "pgd_xxx()" functions here are trivial for a folded two-level * setup: the pgd is never bad, and a pmd always exists (as it's folded * into the pgd entry) */static inline int pgd_none(pgd_t pgd)		{ return 0; }static inline int pgd_bad(pgd_t pgd)		{ return 0; }static inline int pgd_present(pgd_t pgd)	{ return 1; }static inline void pgd_clear (pgd_t * pgdp) 	{ } /* * Certain architectures need to do special things when PTEs * within a page table are directly modified.  Thus, the following * hook is made available. */#define set_pte(pteptr, pteval) (*(pteptr) = pteval)#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) /* * (pmds are folded into pgds so this doesn't get actually called, * but the define is needed for a generic inline function.) */#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)#define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval) #define pgd_page(pgd) \((unsigned long) __va(pgd_val(pgd) & PAGE_MASK)) static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address){	return (pmd_t *) dir;} #define pte_pfn(x)		((unsigned long)(((x).pte >> PAGE_SHIFT)))#define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))#define pfn_pmd(pfn, prot)	__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) #endif /* !__ASSEMBLY__ */ #endif /* __ASM_SH_PGTABLE_2LEVEL_H */