include/linux/iscsi_ibft.h

   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
  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 */