Merge tag 'backlight-next-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee...
[linux-block.git] / include / linux / iscsi_ibft.h
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d9523678 1/* SPDX-License-Identifier: GPL-2.0-only */
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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.
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11 */
12
13#ifndef ISCSI_IBFT_H
14#define ISCSI_IBFT_H
15
9d24622c 16#include <linux/acpi.h>
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17
18/*
19 * Logical location of iSCSI Boot Format Table.
20 * If the value is NULL there is no iBFT on the machine.
21 */
4e639fdf 22extern struct acpi_table_ibft *ibft_addr;
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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
042be38e 29unsigned long find_ibft_region(unsigned long *sizep);
138fe4e0 30#else
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31static inline unsigned long find_ibft_region(unsigned long *sizep)
32{
33 *sizep = 0;
34 return 0;
35}
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36#endif
37
38#endif /* ISCSI_IBFT_H */