97 строки
2.7 KiB
C
97 строки
2.7 KiB
C
#ifndef _BLACKFIN_PGTABLE_H
|
|
#define _BLACKFIN_PGTABLE_H
|
|
|
|
#include <asm-generic/4level-fixup.h>
|
|
|
|
#include <asm/page.h>
|
|
#include <asm/cplb.h>
|
|
|
|
typedef pte_t *pte_addr_t;
|
|
/*
|
|
* Trivial page table functions.
|
|
*/
|
|
#define pgd_present(pgd) (1)
|
|
#define pgd_none(pgd) (0)
|
|
#define pgd_bad(pgd) (0)
|
|
#define pgd_clear(pgdp)
|
|
#define kern_addr_valid(addr) (1)
|
|
|
|
#define pmd_offset(a, b) ((void *)0)
|
|
#define pmd_none(x) (!pmd_val(x))
|
|
#define pmd_present(x) (pmd_val(x))
|
|
#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
|
|
#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK)
|
|
|
|
#define kern_addr_valid(addr) (1)
|
|
|
|
#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */
|
|
#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */
|
|
#define PAGE_COPY __pgprot(0) /* these mean nothing to NO_MM */
|
|
#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */
|
|
#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */
|
|
|
|
extern void paging_init(void);
|
|
|
|
#define __swp_type(x) (0)
|
|
#define __swp_offset(x) (0)
|
|
#define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
|
|
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
|
|
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
|
|
|
|
static inline int pte_file(pte_t pte)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
|
|
#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
|
|
|
|
/*
|
|
* Page assess control based on Blackfin CPLB management
|
|
*/
|
|
#define _PAGE_RD (CPLB_USER_RD)
|
|
#define _PAGE_WR (CPLB_USER_WR)
|
|
#define _PAGE_USER (CPLB_USER_RD | CPLB_USER_WR)
|
|
#define _PAGE_ACCESSED CPLB_ALL_ACCESS
|
|
#define _PAGE_DIRTY (CPLB_DIRTY)
|
|
|
|
#define PTE_BIT_FUNC(fn, op) \
|
|
static inline pte_t pte_##fn(pte_t _pte) { _pte.pte op; return _pte; }
|
|
|
|
PTE_BIT_FUNC(rdprotect, &= ~_PAGE_RD);
|
|
PTE_BIT_FUNC(mkread, |= _PAGE_RD);
|
|
PTE_BIT_FUNC(wrprotect, &= ~_PAGE_WR);
|
|
PTE_BIT_FUNC(mkwrite, |= _PAGE_WR);
|
|
PTE_BIT_FUNC(exprotect, &= ~_PAGE_USER);
|
|
PTE_BIT_FUNC(mkexec, |= _PAGE_USER);
|
|
PTE_BIT_FUNC(mkclean, &= ~_PAGE_DIRTY);
|
|
PTE_BIT_FUNC(mkdirty, |= _PAGE_DIRTY);
|
|
PTE_BIT_FUNC(mkold, &= ~_PAGE_ACCESSED);
|
|
PTE_BIT_FUNC(mkyoung, |= _PAGE_ACCESSED);
|
|
|
|
/*
|
|
* ZERO_PAGE is a global shared page that is always zero: used
|
|
* for zero-mapped memory areas etc..
|
|
*/
|
|
#define ZERO_PAGE(vaddr) (virt_to_page(0))
|
|
|
|
extern unsigned int kobjsize(const void *objp);
|
|
|
|
#define swapper_pg_dir ((pgd_t *) 0)
|
|
/*
|
|
* No page table caches to initialise.
|
|
*/
|
|
#define pgtable_cache_init() do { } while (0)
|
|
#define io_remap_pfn_range remap_pfn_range
|
|
|
|
/*
|
|
* All 32bit addresses are effectively valid for vmalloc...
|
|
* Sort of meaningless for non-VM targets.
|
|
*/
|
|
#define VMALLOC_START 0
|
|
#define VMALLOC_END 0xffffffff
|
|
|
|
#include <asm-generic/pgtable.h>
|
|
|
|
#endif /* _BLACKFIN_PGTABLE_H */
|