1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * Copyright 2019 Broadcom.
4 */
5
6 #ifndef __GIC_V3_H__
7 #define __GIC_V3_H__
8
9 #ifndef __ASSEMBLY__
10 #include <linux/bitops.h>
11 #endif
12
13 #define GICR_CTLR_ENABLE_LPIS BIT(0)
14 #define GICR_CTLR_RWP BIT(3)
15
16 #define GICR_TYPER_CPU_NUMBER(r) (((r) >> 8) & 0xffff)
17
18 #define GICR_WAKER_PROCESSORSLEEP BIT(1)
19 #define GICR_WAKER_CHILDRENASLEEP BIT(2)
20
21 #define GIC_BASER_CACHE_NCNB 0ULL
22 #define GIC_BASER_CACHE_SAMEASINNER 0ULL
23 #define GIC_BASER_CACHE_NC 1ULL
24 #define GIC_BASER_CACHE_RAWT 2ULL
25 #define GIC_BASER_CACHE_RAWB 3ULL
26 #define GIC_BASER_CACHE_WAWT 4ULL
27 #define GIC_BASER_CACHE_WAWB 5ULL
28 #define GIC_BASER_CACHE_RAWAWT 6ULL
29 #define GIC_BASER_CACHE_RAWAWB 7ULL
30 #define GIC_BASER_CACHE_MASK 7ULL
31 #define GIC_BASER_NONSHAREABLE 0ULL
32 #define GIC_BASER_INNERSHAREABLE 1ULL
33 #define GIC_BASER_OUTERSHAREABLE 2ULL
34 #define GIC_BASER_SHAREABILITY_MASK 3ULL
35
36 #define GIC_BASER_CACHEABILITY(reg, inner_outer, type) \
37 (GIC_BASER_CACHE_##type << reg##_##inner_outer##_CACHEABILITY_SHIFT)
38
39 #define GIC_BASER_SHAREABILITY(reg, type) \
40 (GIC_BASER_##type << reg##_SHAREABILITY_SHIFT)
41
42 /* encode a size field of width @w containing @n - 1 units */
43 #define GIC_ENCODE_SZ(n, w) (((unsigned long)(n) - 1) &\
44 GENMASK_ULL(((w) - 1), 0))
45
46 #define GICR_PROPBASER_SHAREABILITY_SHIFT (10)
47 #define GICR_PROPBASER_INNER_CACHEABILITY_SHIFT (7)
48 #define GICR_PROPBASER_OUTER_CACHEABILITY_SHIFT (56)
49 #define GICR_PROPBASER_SHAREABILITY_MASK \
50 GIC_BASER_SHAREABILITY(GICR_PROPBASER, SHAREABILITY_MASK)
51 #define GICR_PROPBASER_INNER_CACHEABILITY_MASK \
52 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, MASK)
53 #define GICR_PROPBASER_OUTER_CACHEABILITY_MASK \
54 GIC_BASER_CACHEABILITY(GICR_PROPBASER, OUTER, MASK)
55 #define GICR_PROPBASER_CACHEABILITY_MASK GICR_PROPBASER_INNER_CACHEABILITY_MASK
56
57 #define GICR_PROPBASER_INNERSHAREABLE \
58 GIC_BASER_SHAREABILITY(GICR_PROPBASER, INNERSHAREABLE)
59
60 #define GICR_PROPBASER_NCNB \
61 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, NCNB)
62 #define GICR_PROPBASER_NC \
63 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, NC)
64 #define GICR_PROPBASER_RAWT \
65 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, RAWT)
66 #define GICR_PROPBASER_RAWB \
67 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, RAWB)
68 #define GICR_PROPBASER_WAWT \
69 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, WAWT)
70 #define GICR_PROPBASER_WAWB \
71 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, WAWB)
72 #define GICR_PROPBASER_RAWAWT \
73 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, RAWAWT)
74 #define GICR_PROPBASER_RAWAWB \
75 GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, RAWAWB)
76
77 #define GICR_PROPBASER_IDBITS_MASK (0x1f)
78 #define GICR_PROPBASER_ADDRESS(x) ((x) & GENMASK_ULL(51, 12))
79 #define GICR_PENDBASER_ADDRESS(x) ((x) & GENMASK_ULL(51, 16))
80
81 #define GICR_PENDBASER_SHAREABILITY_SHIFT (10)
82 #define GICR_PENDBASER_INNER_CACHEABILITY_SHIFT (7)
83 #define GICR_PENDBASER_OUTER_CACHEABILITY_SHIFT (56)
84 #define GICR_PENDBASER_SHAREABILITY_MASK \
85 GIC_BASER_SHAREABILITY(GICR_PENDBASER, SHAREABILITY_MASK)
86 #define GICR_PENDBASER_INNER_CACHEABILITY_MASK \
87 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, MASK)
88 #define GICR_PENDBASER_OUTER_CACHEABILITY_MASK \
89 GIC_BASER_CACHEABILITY(GICR_PENDBASER, OUTER, MASK)
90 #define GICR_PENDBASER_CACHEABILITY_MASK \
91 GICR_PENDBASER_INNER_CACHEABILITY_MASK
92
93 #define GICR_PENDBASER_INNERSHAREABLE \
94 GIC_BASER_SHAREABILITY(GICR_PENDBASER, INNERSHAREABLE)
95
96 #define GICR_PENDBASER_NCNB \
97 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, NCNB)
98 #define GICR_PENDBASER_NC \
99 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, NC)
100 #define GICR_PENDBASER_RAWT \
101 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, RAWT)
102 #define GICR_PENDBASER_RAWB \
103 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, RAWB)
104 #define GICR_PENDBASER_WAWT \
105 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, WAWT)
106 #define GICR_PENDBASER_WAWB \
107 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, WAWB)
108 #define GICR_PENDBASER_RAWAWT \
109 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, RAWAWT)
110 #define GICR_PENDBASER_RAWAWB \
111 GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, RAWAWB)
112
113 #define GICR_PENDBASER_PTZ BIT_ULL(62)
114
115 #define ITS_MAX_LPI_NRBITS 16 /* 64K LPIs */
116
117 #define GICD_TYPER_ID_BITS(typer) ((((typer) >> 19) & 0x1f) + 1)
118 #define GICD_TYPER_NUM_LPIS(typer) ((((typer) >> 11) & 0x1f) + 1)
119 #define GICD_TYPER_IRQS(typer) ((((typer) & 0x1f) + 1) * 32)
120
121 /* Message based interrupts support */
122 #define GICD_TYPER_MBIS BIT(16)
123 /* LPI support */
124 #define GICD_TYPER_LPIS BIT(17)
125 #define GICD_TYPER_RSS BIT(26)
126
127 #define GIC_REDISTRIBUTOR_OFFSET 0x20000
128
129 #ifdef CONFIG_GIC_V3_ITS
130 int gic_lpi_tables_init(void);
131 #else
gic_lpi_tables_init(void)132 int gic_lpi_tables_init(void)
133 {
134 return 0;
135 }
136 #endif /* CONFIG_GIC_V3_ITS */
137
138 #endif /* __GIC_V3_H__ */
139