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