1 /*
2  *  Copyright 2007 Red Hat, Inc.
3  *  by Peter Jones <pjones@redhat.com>
4  *  Copyright 2007 IBM, Inc.
5  *  by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
6  *  Copyright 2008
7  *  by Konrad Rzeszutek <ketuzsezr@darnok.org>
8  *
9  * This code exposes the iSCSI Boot Format Table to userland via sysfs.
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License v2.0 as published by
13  * the Free Software Foundation
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  */
20 
21 #ifndef ISCSI_IBFT_H
22 #define ISCSI_IBFT_H
23 
24 #include <linux/acpi.h>
25 
26 /*
27  * Logical location of iSCSI Boot Format Table.
28  * If the value is NULL there is no iBFT on the machine.
29  */
30 extern struct acpi_table_ibft *ibft_addr;
31 
32 /*
33  * Routine used to find and reserve the iSCSI Boot Format Table. The
34  * mapped address is set in the ibft_addr variable.
35  */
36 #ifdef CONFIG_ISCSI_IBFT_FIND
37 unsigned long find_ibft_region(unsigned long *sizep);
38 #else
find_ibft_region(unsigned long * sizep)39 static inline unsigned long find_ibft_region(unsigned long *sizep)
40 {
41 	*sizep = 0;
42 	return 0;
43 }
44 #endif
45 
46 #endif /* ISCSI_IBFT_H */
47