mirror of https://gitee.com/openkylin/linux.git
40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
/*
|
|
* Copyright (C) 2002, 2003 Jeff Dike (jdike@addtoit.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __MEM_H__
|
|
#define __MEM_H__
|
|
|
|
#include "linux/types.h"
|
|
|
|
extern int phys_mapping(unsigned long phys, __u64 *offset_out);
|
|
extern int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w);
|
|
extern int is_remapped(void *virt);
|
|
extern int physmem_remove_mapping(void *virt);
|
|
extern void physmem_forget_descriptor(int fd);
|
|
|
|
extern unsigned long uml_physmem;
|
|
static inline unsigned long to_phys(void *virt)
|
|
{
|
|
return(((unsigned long) virt) - uml_physmem);
|
|
}
|
|
|
|
static inline void *to_virt(unsigned long phys)
|
|
{
|
|
return((void *) uml_physmem + phys);
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|