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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*
* arch/arm64/include/asm/arch_gicv3.h
*
* Copyright (C) 2015 ARM Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_ARCH_GICV3_H
#define __ASM_ARCH_GICV3_H
#include <asm/sysreg.h>
#ifndef __ASSEMBLY__
#include <linux/stringify.h>
#include <asm/barrier.h>
#include <asm/cacheflush.h>
#define read_gicreg(r) read_sysreg_s(SYS_ ## r)
#define write_gicreg(v, r) write_sysreg_s(v, SYS_ ## r)
/*
* Low-level accessors
*
* These system registers are 32 bits, but we make sure that the compiler
* sets the GP register's most significant bits to 0 with an explicit cast.
*/
static inline void gic_write_eoir(u32 irq)
{
write_sysreg_s(irq, SYS_ICC_EOIR1_EL1);
isb();
}
static inline void gic_write_dir(u32 irq)
{
write_sysreg_s(irq, SYS_ICC_DIR_EL1);
isb();
}
static inline u64 gic_read_iar_common(void)
{
u64 irqstat;
irqstat = read_sysreg_s(SYS_ICC_IAR1_EL1);
dsb(sy);
return irqstat;
}
/*
* Cavium ThunderX erratum 23154
*
* The gicv3 of ThunderX requires a modified version for reading the
* IAR status to ensure data synchronization (access to icc_iar1_el1
* is not sync'ed before and after).
*/
static inline u64 gic_read_iar_cavium_thunderx(void)
{
u64 irqstat;
nops(8);
irqstat = read_sysreg_s(SYS_ICC_IAR1_EL1);
nops(4);
mb();
return irqstat;
}
static inline void gic_write_pmr(u32 val)
{
write_sysreg_s(val, SYS_ICC_PMR_EL1);
}
static inline void gic_write_ctlr(u32 val)
{
write_sysreg_s(val, SYS_ICC_CTLR_EL1);
isb();
}
static inline void gic_write_grpen1(u32 val)
{
write_sysreg_s(val, SYS_ICC_IGRPEN1_EL1);
isb();
}
static inline void gic_write_sgi1r(u64 val)
{
write_sysreg_s(val, SYS_ICC_SGI1R_EL1);
}
static inline u32 gic_read_sre(void)
{
return read_sysreg_s(SYS_ICC_SRE_EL1);
}
static inline void gic_write_sre(u32 val)
{
write_sysreg_s(val, SYS_ICC_SRE_EL1);
isb();
}
static inline void gic_write_bpr1(u32 val)
{
write_sysreg_s(val, SYS_ICC_BPR1_EL1);
}
#define gic_read_typer(c) readq_relaxed(c)
#define gic_write_irouter(v, c) writeq_relaxed(v, c)
#define gic_flush_dcache_to_poc(a,l) __flush_dcache_area((a), (l))
#define gits_read_baser(c) readq_relaxed(c)
#define gits_write_baser(v, c) writeq_relaxed(v, c)
#define gits_read_cbaser(c) readq_relaxed(c)
#define gits_write_cbaser(v, c) writeq_relaxed(v, c)
#define gits_write_cwriter(v, c) writeq_relaxed(v, c)
#define gicr_read_propbaser(c) readq_relaxed(c)
#define gicr_write_propbaser(v, c) writeq_relaxed(v, c)
#define gicr_write_pendbaser(v, c) writeq_relaxed(v, c)
#define gicr_read_pendbaser(c) readq_relaxed(c)
#endif /* __ASSEMBLY__ */
#endif /* __ASM_ARCH_GICV3_H */
|
