Release 4.14 arch/frv/include/asm/page.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_PAGE_H

#define _ASM_PAGE_H

#include <asm/virtconvert.h>
#include <asm/mem-layout.h>
#include <asm/sections.h>
#include <asm/setup.h>

#ifndef __ASSEMBLY__


#define clear_page(pgaddr)			memset((pgaddr), 0, PAGE_SIZE)

#define copy_page(to,from)			memcpy((to), (from), PAGE_SIZE)


#define clear_user_page(pgaddr, vaddr, page)	memset((pgaddr), 0, PAGE_SIZE)

#define copy_user_page(vto, vfrom, vaddr, topg)	memcpy((vto), (vfrom), PAGE_SIZE)

/*
 * These are used to make use of C type-checking..
 */


typedef struct { unsigned long	pte;	} pte_t;


typedef struct { unsigned long	ste[64];} pmd_t;


typedef struct { pmd_t		pue[1]; } pud_t;


typedef struct { pud_t		pge[1];	} pgd_t;


typedef struct { unsigned long	pgprot;	} pgprot_t;

typedef struct page *pgtable_t;


#define pte_val(x)	((x).pte)

#define pmd_val(x)	((x).ste[0])

#define pud_val(x)	((x).pue[0])

#define pgd_val(x)	((x).pge[0])

#define pgprot_val(x)	((x).pgprot)


#define __pte(x)	((pte_t) { (x) } )

#define __pmd(x)	((pmd_t) { { (x) } } )

#define __pud(x)	((pud_t) { (x) } )

#define __pgd(x)	((pgd_t) { (x) } )

#define __pgprot(x)	((pgprot_t) { (x) } )

#define PTE_MASK	PAGE_MASK


#define devmem_is_allowed(pfn)	1


#define __pa(vaddr)		virt_to_phys((void *) (unsigned long) (vaddr))

#define __va(paddr)		phys_to_virt((unsigned long) (paddr))


#define pfn_to_kaddr(pfn)	__va((pfn) << PAGE_SHIFT)

extern unsigned long max_low_pfn;
extern unsigned long min_low_pfn;
extern unsigned long max_pfn;

#ifdef CONFIG_MMU

#define pfn_valid(pfn)		((pfn) < max_mapnr)
#else

#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)

#define pfn_valid(pfn)		((pfn) >= min_low_pfn && (pfn) < max_low_pfn)

#endif


#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)



#define VM_DATA_DEFAULT_FLAGS \
	(VM_READ | VM_WRITE | \
        ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)

#endif /* __ASSEMBLY__ */

#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>

#endif /* _ASM_PAGE_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
David Howells
283
94.65%
3
33.33%
Martin Schwidefsky
6
2.01%
1
11.11%
Kamezawa Hiroyuki
5
1.67%
1
11.11%
Stephen Rothwell
2
0.67%
1
11.11%
Greg Kroah-Hartman
1
0.33%
1
11.11%
Dan J Williams
1
0.33%
1
11.11%
Arnd Bergmann
1
0.33%
1
11.11%
Total
299
100.00%
9
100.00%
Directory: arch/frv/include/asm

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.