forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.2 KiB
123 lines
3.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* Copyright (C) 2000 - 2003 Jeff Dike ([email protected]) |
|
* Copyright 2003 PathScale, Inc. |
|
*/ |
|
|
|
#ifndef __UM_PAGE_H |
|
#define __UM_PAGE_H |
|
|
|
#include <linux/const.h> |
|
|
|
/* PAGE_SHIFT determines the page size */ |
|
#define PAGE_SHIFT 12 |
|
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) |
|
#define PAGE_MASK (~(PAGE_SIZE-1)) |
|
|
|
#ifndef __ASSEMBLY__ |
|
|
|
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) |
|
|
|
#if defined(CONFIG_3_LEVEL_PGTABLES) && !defined(CONFIG_64BIT) |
|
|
|
typedef struct { unsigned long pte; } pte_t; |
|
typedef struct { unsigned long pmd; } pmd_t; |
|
typedef struct { unsigned long pgd; } pgd_t; |
|
#define pte_val(p) ((p).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_NEWPAGE)) |
|
#define pte_set_val(p, phys, prot) \ |
|
({ (p).pte = (phys) | pgprot_val(prot); }) |
|
|
|
#define pmd_val(x) ((x).pmd) |
|
#define __pmd(x) ((pmd_t) { (x) } ) |
|
|
|
typedef unsigned long long phys_t; |
|
|
|
#else |
|
|
|
typedef struct { unsigned long pte; } pte_t; |
|
typedef struct { unsigned long pgd; } pgd_t; |
|
|
|
#ifdef CONFIG_3_LEVEL_PGTABLES |
|
typedef struct { unsigned long pmd; } pmd_t; |
|
#define pmd_val(x) ((x).pmd) |
|
#define __pmd(x) ((pmd_t) { (x) } ) |
|
#endif |
|
|
|
#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_NEWPAGE)) |
|
#define pte_set_val(p, phys, prot) (p).pte = (phys | pgprot_val(prot)) |
|
|
|
typedef unsigned long phys_t; |
|
|
|
#endif |
|
|
|
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) to_phys((void *) (unsigned long) (virt)) |
|
#define __va(phys) to_virt((unsigned long) (phys)) |
|
|
|
#define phys_to_pfn(p) ((p) >> PAGE_SHIFT) |
|
#define pfn_to_phys(pfn) PFN_PHYS(pfn) |
|
|
|
#define pfn_valid(pfn) ((pfn) < max_mapnr) |
|
#define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v))) |
|
|
|
#include <asm-generic/memory_model.h> |
|
#include <asm-generic/getorder.h> |
|
|
|
#endif /* __ASSEMBLY__ */ |
|
|
|
#ifdef CONFIG_X86_32 |
|
#define __HAVE_ARCH_GATE_AREA 1 |
|
#endif |
|
|
|
#endif /* __UM_PAGE_H */
|
|
|