| /* |
| * Copyright (C) 2006 Hollis Blanchard <hollisb@us.ibm.com>, IBM Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef _ASM_IA64_XEN_XENCOMM_H |
| #define _ASM_IA64_XEN_XENCOMM_H |
| |
| #include <xen/xencomm.h> |
| #include <asm/pgtable.h> |
| |
| /* Must be called before any hypercall. */ |
| extern void xencomm_initialize(void); |
| extern int xencomm_is_initialized(void); |
| |
| /* Check if virtual contiguity means physical contiguity |
| * where the passed address is a pointer value in virtual address. |
| * On ia64, identity mapping area in region 7 or the piece of region 5 |
| * that is mapped by itr[IA64_TR_KERNEL]/dtr[IA64_TR_KERNEL] |
| */ |
| static inline int xencomm_is_phys_contiguous(unsigned long addr) |
| { |
| return (PAGE_OFFSET <= addr && |
| addr < (PAGE_OFFSET + (1UL << IA64_MAX_PHYS_BITS))) || |
| (KERNEL_START <= addr && |
| addr < KERNEL_START + KERNEL_TR_PAGE_SIZE); |
| } |
| |
| #endif /* _ASM_IA64_XEN_XENCOMM_H */ |
