include/linux/iscsi_ibft.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  Copyright 2007 Red Hat, Inc.
   4  *  by Peter Jones <pjones@redhat.com>
   5  *  Copyright 2007 IBM, Inc.
   6  *  by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
   7  *  Copyright 2008
   8  *  by Konrad Rzeszutek <ketuzsezr@darnok.org>
   9  *
  10  * This code exposes the iSCSI Boot Format Table to userland via sysfs.
  11  */
  12
  13 #ifndef ISCSI_IBFT_H
  14 #define ISCSI_IBFT_H
  15
  16 #include <linux/acpi.h>
  17
  18 /*
  19  * Logical location of iSCSI Boot Format Table.
  20  * If the value is NULL there is no iBFT on the machine.
  21  */
  22 extern struct acpi_table_ibft *ibft_addr;
  23
  24 /*
  25  * Routine used to find and reserve the iSCSI Boot Format Table. The
  26  * mapped address is set in the ibft_addr variable.
  27  */
  28 #ifdef CONFIG_ISCSI_IBFT_FIND
  29 unsigned long find_ibft_region(unsigned long *sizep);
  30 #else
  31 static inline unsigned long find_ibft_region(unsigned long *sizep)
  32 {
  33         *sizep = 0;
  34         return 0;
  35 }
  36 #endif
  37
  38 #endif /* ISCSI_IBFT_H */