/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
* Copyright 2003 PathScale, Inc.
*/
#ifndef __UM_PAGE_H
#define __UM_PAGE_H
#include <linux/
const.h>
#include <vdso/page.h>
#ifndef __ASSEMBLER__
struct page;
#include <linux/pfn.h>
#include <linux/types.h>
#include <
asm/vm-flags.h>
/*
* These are used to make use of C type-checking..
*/
#define clear_page(page) memset((
void *)(page), 0, PAGE_SIZE)
#define copy_page(to,from) memcpy((
void *)(to), (
void *)(from), PAGE_SIZE)
#define clear_user_page(page, vaddr, pg) clear_page(page)
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
typedef struct {
unsigned long pte; } pte_t;
typedef struct {
unsigned long pgd; } pgd_t;
#if CONFIG_PGTABLE_LEVELS > 2
typedef struct {
unsigned long pmd; } pmd_t;
#define pmd_val(x) ((x).pmd)
#define __pmd(x) ((pmd_t) { (x) } )
#if CONFIG_PGTABLE_LEVELS > 3
typedef struct {
unsigned long pud; } pud_t;
#define pud_val(x) ((x).pud)
#define __pud(x) ((pud_t) { (x) } )
#endif /* CONFIG_PGTABLE_LEVELS > 3 */
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
#define pte_val(x) ((x).pte)
#define pte_get_bits(p, bits) ((p).pte & (bits))
#define pte_set_bits(p, bits) ((p).pte |= (bits))
#define pte_clear_bits(p, bits) ((p).pte &= ~(bits))
#define pte_copy(to, from) ((to).pte = (from).pte)
#define pte_is_zero(p) (!((p).pte & ~_PAGE_NEEDSYNC))
#define pte_set_val(p, phys, prot) (p).pte = (phys | pgprot_val(prot))
typedef unsigned long phys_t;
typedef struct {
unsigned long pgprot; } pgprot_t;
typedef struct page *pgtable_t;
#define pgd_val(x) ((x).pgd)
#define pgprot_val(x) ((x).pgprot)
#define __pte(x) ((pte_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
extern unsigned long uml_physmem;
#define PAGE_OFFSET (uml_physmem)
#define KERNELBASE PAGE_OFFSET
#define __va_space (8*1024*1024)
#include <mem.h>
/* Cast to unsigned long before casting to void * to avoid a warning from
* mmap_kmem about cutting a long long down to a void *. Not sure that
* casting is the right thing, but 32-bit UML can't have 64-bit virtual
* addresses
*/
#define __pa(virt) uml_to_phys((
void *) (
unsigned long) (virt))
#define __va(phys) uml_to_virt((
unsigned long) (phys))
#define phys_to_pfn(p) ((p) >> PAGE_SHIFT)
#define pfn_to_phys(pfn) PFN_PHYS(pfn)
#define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v)))
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
#endif /* __ASSEMBLER__ */
#ifdef CONFIG_X86_32
#define __HAVE_ARCH_GATE_AREA 1
#endif
#endif /* __UM_PAGE_H */
