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
mfn_to_pfn(unsigned long mfn)28 static inline unsigned long mfn_to_pfn(unsigned long mfn)
29 {
30 return mfn;
31 }
32
pfn_to_mfn(unsigned long pfn)33 static 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
mfn_to_virt(unsigned long mfn)40 static inline void *mfn_to_virt(unsigned long mfn)
41 {
42 return __va(mfn << PAGE_SHIFT);
43 }
44
virt_to_mfn(void * virt)45 static inline unsigned long virt_to_mfn(void *virt)
46 {
47 return __pa(virt) >> PAGE_SHIFT;
48 }
49
50 /* for tpmfront.c */
virt_to_machine(void * virt)51 static inline unsigned long virt_to_machine(void *virt)
52 {
53 return __pa(virt);
54 }
55
set_phys_to_machine(unsigned long pfn,unsigned long mfn)56 static 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