2008-10-17 10:17:53 +08:00
|
|
|
/*
|
|
|
|
* 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);
|
2008-10-17 10:17:54 +08:00
|
|
|
extern int xencomm_is_initialized(void);
|
2008-10-17 10:17:53 +08:00
|
|
|
|
|
|
|
/* 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 */
|