aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc/dcr.h
blob: 53b283050ab3456fa676efb4c42fa0407cadb155 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/*
 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
 *                    <benh@kernel.crashing.org>
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _ASM_POWERPC_DCR_H
#define _ASM_POWERPC_DCR_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#ifdef CONFIG_PPC_DCR

#ifdef CONFIG_PPC_DCR_NATIVE
#include <asm/dcr-native.h>
#endif

#ifdef CONFIG_PPC_DCR_MMIO
#include <asm/dcr-mmio.h>
#endif


/* Indirection layer for providing both NATIVE and MMIO support. */

#if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO)

#include <asm/dcr-generic.h>

#define DCR_MAP_OK(host)	dcr_map_ok_generic(host)
#define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c)
#define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c)
#define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n)
#define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value)

#else

#ifdef CONFIG_PPC_DCR_NATIVE
typedef dcr_host_native_t dcr_host_t;
#define DCR_MAP_OK(host)	dcr_map_ok_native(host)
#define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c)
#define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c)
#define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n)
#define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value)
#else
typedef dcr_host_mmio_t dcr_host_t;
#define DCR_MAP_OK(host)	dcr_map_ok_mmio(host)
#define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c)
#define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c)
#define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n)
#define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value)
#endif

#endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */

/*
 * On CONFIG_PPC_MERGE, we have additional helpers to read the DCR
 * base from the device-tree
 */
#ifdef CONFIG_PPC_MERGE
struct device_node;
extern unsigned int dcr_resource_start(struct device_node *np,
				       unsigned int index);
extern unsigned int dcr_resource_len(struct device_node *np,
				     unsigned int index);
#endif /* CONFIG_PPC_MERGE */

#endif /* CONFIG_PPC_DCR */
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_DCR_H */