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_GENERIC_H
8#define _ASM_POWERPC_DCR_GENERIC_H
9#ifdef __KERNEL__
10#ifndef __ASSEMBLY__
11
12enum host_type_t {DCR_HOST_MMIO, DCR_HOST_NATIVE, DCR_HOST_INVALID};
13
14typedef struct {
15	enum host_type_t type;
16	union {
17		dcr_host_mmio_t mmio;
18		dcr_host_native_t native;
19	} host;
20} dcr_host_t;
21
22extern bool dcr_map_ok_generic(dcr_host_t host);
23
24extern dcr_host_t dcr_map_generic(struct device_node *dev, unsigned int dcr_n,
25			  unsigned int dcr_c);
26extern void dcr_unmap_generic(dcr_host_t host, unsigned int dcr_c);
27
28extern u32 dcr_read_generic(dcr_host_t host, unsigned int dcr_n);
29
30extern void dcr_write_generic(dcr_host_t host, unsigned int dcr_n, u32 value);
31
32#endif /* __ASSEMBLY__ */
33#endif /* __KERNEL__ */
34#endif /* _ASM_POWERPC_DCR_GENERIC_H */
35
36
37