2e2e973d78
* manage pages by an array * fix mmap of fd created by memfd_create() populates the map * refactor pgsize and pgshift handling Change-Id: Icaf015b10afc35f2b95f93059adf1a1b6b92e14e refs: #1475
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/**
|
|
* \file pager.h
|
|
* License details are found in the file LICENSE.
|
|
* \brief
|
|
* file back-ended pager declarations
|
|
* \author Gou Nakamura <go.nakamura.yw@hitachi-solutions.com> \par
|
|
* Copyright (C) 2013 Hitachi, Ltd.
|
|
*/
|
|
/*
|
|
* HISTORY:
|
|
*/
|
|
#ifndef HEADER_PAGER_H
|
|
#define HEADER_PAGER_H
|
|
|
|
#include <ihk/types.h>
|
|
#include <limits.h>
|
|
|
|
enum pager_op {
|
|
PAGER_REQ_CREATE = 0x0001,
|
|
PAGER_REQ_RELEASE = 0x0002,
|
|
PAGER_REQ_READ = 0x0003,
|
|
PAGER_REQ_WRITE = 0x0004,
|
|
PAGER_REQ_MAP = 0x0005,
|
|
PAGER_REQ_PFN = 0x0006,
|
|
PAGER_REQ_UNMAP = 0x0007,
|
|
};
|
|
|
|
/*
|
|
* int pager_req_create(int fd, int flags, int prot, uintptr_t result_rpa);
|
|
*/
|
|
struct pager_create_result {
|
|
uintptr_t handle;
|
|
int maxprot;
|
|
uint32_t flags;
|
|
size_t size;
|
|
int pgshift;
|
|
char path[PATH_MAX];
|
|
};
|
|
|
|
/*
|
|
* int pager_req_release(uintptr_t handle);
|
|
*/
|
|
/*
|
|
* int pager_req_read(uintptr_t handle, off_t off, size_t size, uintptr_t buf_rpa);
|
|
*/
|
|
/*
|
|
*/
|
|
struct pager_map_result {
|
|
uintptr_t handle;
|
|
int maxprot;
|
|
int8_t padding[4];
|
|
char path[PATH_MAX];
|
|
};
|
|
|
|
/* for pager_req_pfn() */
|
|
#define PFN_VALID ((uintptr_t)1 << 63)
|
|
#define PFN_PRESENT ((uintptr_t)1 << 0)
|
|
#define PFN_PFN ((((uintptr_t)1 << 56) - 1) & ~(PAGE_SIZE - 1))
|
|
|
|
#endif /* HEADER_PAGER_H */
|