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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - arch/arm64/include/asm/arch_gicv3.h
2 * arch/arm64/include/asm/arch_gicv3.h
4 * Copyright (C) 2015 ARM Ltd.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #ifndef __ASM_ARCH_GICV3_H
19 #define __ASM_ARCH_GICV3_H
21 #include <asm/sysreg.h>
23 #define ICC_BPR0_EL1 sys_reg(3, 0, 12, 8, 3)
24 #define ICC_AP1Rn_EL1(n) sys_reg(3, 0, 12, 9, n)
25 #define ICC_EOIR1_EL1 sys_reg(3, 0, 12, 12, 1)
26 #define ICC_DIR_EL1 sys_reg(3, 0, 12, 11, 1)
27 #define ICC_IAR1_EL1 sys_reg(3, 0, 12, 12, 0)
28 #define ICC_SGI1R_EL1 sys_reg(3, 0, 12, 11, 5)
29 #define ICC_PMR_EL1 sys_reg(3, 0, 4, 6, 0)
30 #define ICC_CTLR_EL1 sys_reg(3, 0, 12, 12, 4)
31 #define ICC_SRE_EL1 sys_reg(3, 0, 12, 12, 5)
32 #define ICC_GRPEN0_EL1 sys_reg(3, 0, 12, 12, 6)
33 #define ICC_GRPEN1_EL1 sys_reg(3, 0, 12, 12, 7)
34 #define ICC_BPR1_EL1 sys_reg(3, 0, 12, 12, 3)
35 #define ICC_HPPIR1_EL1 sys_reg(3, 0, 12, 12, 2)
36 #define ICC_SRE_EL2 sys_reg(3, 4, 12, 9, 5)
39 * System register definitions
41 #define ICH_VSEIR_EL2 sys_reg(3, 4, 12, 9, 4)
42 #define ICH_HCR_EL2 sys_reg(3, 4, 12, 11, 0)
43 #define ICH_VTR_EL2 sys_reg(3, 4, 12, 11, 1)
44 #define ICH_MISR_EL2 sys_reg(3, 4, 12, 11, 2)
45 #define ICH_EISR_EL2 sys_reg(3, 4, 12, 11, 3)
46 #define ICH_ELSR_EL2 sys_reg(3, 4, 12, 11, 5)
47 #define ICH_VMCR_EL2 sys_reg(3, 4, 12, 11, 7)
49 #define __LR0_EL2(x) sys_reg(3, 4, 12, 12, x)
50 #define __LR8_EL2(x) sys_reg(3, 4, 12, 13, x)
52 #define ICH_LR0_EL2 __LR0_EL2(0)
53 #define ICH_LR1_EL2 __LR0_EL2(1)
54 #define ICH_LR2_EL2 __LR0_EL2(2)
55 #define ICH_LR3_EL2 __LR0_EL2(3)
56 #define ICH_LR4_EL2 __LR0_EL2(4)
57 #define ICH_LR5_EL2 __LR0_EL2(5)
58 #define ICH_LR6_EL2 __LR0_EL2(6)
59 #define ICH_LR7_EL2 __LR0_EL2(7)
60 #define ICH_LR8_EL2 __LR8_EL2(0)
61 #define ICH_LR9_EL2 __LR8_EL2(1)
62 #define ICH_LR10_EL2 __LR8_EL2(2)
63 #define ICH_LR11_EL2 __LR8_EL2(3)
64 #define ICH_LR12_EL2 __LR8_EL2(4)
65 #define ICH_LR13_EL2 __LR8_EL2(5)
66 #define ICH_LR14_EL2 __LR8_EL2(6)
67 #define ICH_LR15_EL2 __LR8_EL2(7)
69 #define __AP0Rx_EL2(x) sys_reg(3, 4, 12, 8, x)
70 #define ICH_AP0R0_EL2 __AP0Rx_EL2(0)
71 #define ICH_AP0R1_EL2 __AP0Rx_EL2(1)
72 #define ICH_AP0R2_EL2 __AP0Rx_EL2(2)
73 #define ICH_AP0R3_EL2 __AP0Rx_EL2(3)
75 #define __AP1Rx_EL2(x) sys_reg(3, 4, 12, 9, x)
76 #define ICH_AP1R0_EL2 __AP1Rx_EL2(0)
77 #define ICH_AP1R1_EL2 __AP1Rx_EL2(1)
78 #define ICH_AP1R2_EL2 __AP1Rx_EL2(2)
79 #define ICH_AP1R3_EL2 __AP1Rx_EL2(3)
83 #include <linux/stringify.h>
84 #include <asm/barrier.h>
85 #include <asm/cacheflush.h>
87 #define read_gicreg read_sysreg_s
88 #define write_gicreg write_sysreg_s
93 * These system registers are 32 bits, but we make sure that the compiler
94 * sets the GP register's most significant bits to 0 with an explicit cast.
97 static inline void gic_write_eoir(u32 irq
)
99 write_sysreg_s(irq
, ICC_EOIR1_EL1
);
103 static inline void gic_write_dir(u32 irq
)
105 write_sysreg_s(irq
, ICC_DIR_EL1
);
109 static inline u64
gic_read_iar_common(void)
113 irqstat
= read_sysreg_s(ICC_IAR1_EL1
);
119 * Cavium ThunderX erratum 23154
121 * The gicv3 of ThunderX requires a modified version for reading the
122 * IAR status to ensure data synchronization (access to icc_iar1_el1
123 * is not sync'ed before and after).
125 static inline u64
gic_read_iar_cavium_thunderx(void)
130 irqstat
= read_sysreg_s(ICC_IAR1_EL1
);
137 static inline void gic_write_pmr(u32 val
)
139 write_sysreg_s(val
, ICC_PMR_EL1
);
142 static inline void gic_write_ctlr(u32 val
)
144 write_sysreg_s(val
, ICC_CTLR_EL1
);
148 static inline void gic_write_grpen1(u32 val
)
150 write_sysreg_s(val
, ICC_GRPEN1_EL1
);
154 static inline void gic_write_sgi1r(u64 val
)
156 write_sysreg_s(val
, ICC_SGI1R_EL1
);
159 static inline u32
gic_read_sre(void)
161 return read_sysreg_s(ICC_SRE_EL1
);
164 static inline void gic_write_sre(u32 val
)
166 write_sysreg_s(val
, ICC_SRE_EL1
);
170 static inline void gic_write_bpr1(u32 val
)
172 asm volatile("msr_s " __stringify(ICC_BPR1_EL1
) ", %0" : : "r" (val
));
175 #define gic_read_typer(c) readq_relaxed(c)
176 #define gic_write_irouter(v, c) writeq_relaxed(v, c)
178 #define gic_flush_dcache_to_poc(a,l) __flush_dcache_area((a), (l))
180 #define gits_read_baser(c) readq_relaxed(c)
181 #define gits_write_baser(v, c) writeq_relaxed(v, c)
183 #define gits_read_cbaser(c) readq_relaxed(c)
184 #define gits_write_cbaser(v, c) writeq_relaxed(v, c)
186 #define gits_write_cwriter(v, c) writeq_relaxed(v, c)
188 #define gicr_read_propbaser(c) readq_relaxed(c)
189 #define gicr_write_propbaser(v, c) writeq_relaxed(v, c)
191 #define gicr_write_pendbaser(v, c) writeq_relaxed(v, c)
192 #define gicr_read_pendbaser(c) readq_relaxed(c)
194 #endif /* __ASSEMBLY__ */
195 #endif /* __ASM_ARCH_GICV3_H */