1/******************************************************************************
2 * arch/ia64/include/asm/xen/page.h
3 *
4 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
5 *                    VA Linux Systems Japan K.K.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20 *
21 */
22
23#ifndef _ASM_IA64_XEN_PAGE_H
24#define _ASM_IA64_XEN_PAGE_H
25
26#define INVALID_P2M_ENTRY	(~0UL)
27
28static inline unsigned long mfn_to_pfn(unsigned long mfn)
29{
30	return mfn;
31}
32
33static inline unsigned long pfn_to_mfn(unsigned long pfn)
34{
35	return pfn;
36}
37
38#define phys_to_machine_mapping_valid(_x)	(1)
39
40static inline void *mfn_to_virt(unsigned long mfn)
41{
42	return __va(mfn << PAGE_SHIFT);
43}
44
45static inline unsigned long virt_to_mfn(void *virt)
46{
47	return __pa(virt) >> PAGE_SHIFT;
48}
49
50/* for tpmfront.c */
51static inline unsigned long virt_to_machine(void *virt)
52{
53	return __pa(virt);
54}
55
56static inline void set_phys_to_machine(unsigned long pfn, unsigned long mfn)
57{
58	/* nothing */
59}
60
61#define pte_mfn(_x)	pte_pfn(_x)
62#define mfn_pte(_x, _y)	__pte_ma(0)		/* unmodified use */
63#define __pte_ma(_x)	((pte_t) {(_x)})        /* unmodified use */
64
65#endif /* _ASM_IA64_XEN_PAGE_H */
66