1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
4 */
5
6#ifndef _POWERPC_SYSDEV_DART_H
7#define _POWERPC_SYSDEV_DART_H
8
9
10/* Offset from base to control register */
11#define DART_CNTL	0
12
13/* Offset from base to exception register */
14#define DART_EXCP_U3	0x10
15/* Offset from base to TLB tag registers */
16#define DART_TAGS_U3	0x1000
17
18/* U4 registers */
19#define DART_BASE_U4	0x10
20#define DART_SIZE_U4	0x20
21#define DART_EXCP_U4	0x30
22#define DART_TAGS_U4	0x1000
23
24/* Control Register fields */
25
26/* U3 registers */
27#define DART_CNTL_U3_BASE_MASK	0xfffff
28#define DART_CNTL_U3_BASE_SHIFT	12
29#define DART_CNTL_U3_FLUSHTLB	0x400
30#define DART_CNTL_U3_ENABLE	0x200
31#define DART_CNTL_U3_SIZE_MASK	0x1ff
32#define DART_CNTL_U3_SIZE_SHIFT	0
33
34/* U4 registers */
35#define DART_BASE_U4_BASE_MASK	0xffffff
36#define DART_BASE_U4_BASE_SHIFT	0
37#define DART_CNTL_U4_ENABLE	0x80000000
38#define DART_CNTL_U4_IONE	0x40000000
39#define DART_CNTL_U4_FLUSHTLB	0x20000000
40#define DART_CNTL_U4_IDLE	0x10000000
41#define DART_CNTL_U4_PAR_EN	0x08000000
42#define DART_CNTL_U4_IONE_MASK	0x07ffffff
43#define DART_SIZE_U4_SIZE_MASK	0x1fff
44#define DART_SIZE_U4_SIZE_SHIFT	0
45
46#define DART_REG(r)	(dart + ((r) >> 2))
47#define DART_IN(r)	(in_be32(DART_REG(r)))
48#define DART_OUT(r,v)	(out_be32(DART_REG(r), (v)))
49
50
51/* size of table in pages */
52
53
54/* DART table fields */
55
56#define DARTMAP_VALID   0x80000000
57#define DARTMAP_RPNMASK 0x00ffffff
58
59
60#define DART_PAGE_SHIFT		12
61#define DART_PAGE_SIZE		(1 << DART_PAGE_SHIFT)
62
63
64#endif /* _POWERPC_SYSDEV_DART_H */
65