dcr.h

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
 4 *                    <benh@kernel.crashing.org>
 5 */
 6
 7#ifndef _ASM_POWERPC_DCR_H
 8#define _ASM_POWERPC_DCR_H
 9#ifdef __KERNEL__
10#ifndef __ASSEMBLER__
11#ifdef CONFIG_PPC_DCR
12
13#include <asm/dcr-native.h>
14
15typedef dcr_host_native_t dcr_host_t;
16#define DCR_MAP_OK(host)	dcr_map_ok_native(host)
17#define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c)
18#define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c)
19#define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n)
20#define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value)
21
22/*
23 * additional helpers to read the DCR * base from the device-tree
24 */
25struct device_node;
26extern unsigned int dcr_resource_start(const struct device_node *np,
27				       unsigned int index);
28extern unsigned int dcr_resource_len(const struct device_node *np,
29				     unsigned int index);
30#endif /* CONFIG_PPC_DCR */
31#endif /* __ASSEMBLER__ */
32#endif /* __KERNEL__ */
33#endif /* _ASM_POWERPC_DCR_H */