| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * arch/arm/include/asm/arch_gicv3.h |
| * |
| * Copyright (C) 2015 ARM Ltd. |
| */ |
| #ifndef __ASM_ARCH_GICV3_H |
| #define __ASM_ARCH_GICV3_H |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <linux/io.h> |
| #include <asm/barrier.h> |
| #include <asm/cacheflush.h> |
| #include <asm/cp15.h> |
| |
| #define ICC_EOIR1 __ACCESS_CP15(c12, 0, c12, 1) |
| #define ICC_DIR __ACCESS_CP15(c12, 0, c11, 1) |
| #define ICC_IAR1 __ACCESS_CP15(c12, 0, c12, 0) |
| #define ICC_SGI1R __ACCESS_CP15_64(0, c12) |
| #define ICC_PMR __ACCESS_CP15(c4, 0, c6, 0) |
| #define ICC_CTLR __ACCESS_CP15(c12, 0, c12, 4) |
| #define ICC_SRE __ACCESS_CP15(c12, 0, c12, 5) |
| #define ICC_IGRPEN1 __ACCESS_CP15(c12, 0, c12, 7) |
| #define ICC_BPR1 __ACCESS_CP15(c12, 0, c12, 3) |
| #define ICC_RPR __ACCESS_CP15(c12, 0, c11, 3) |
| |
| #define __ICC_AP0Rx(x) __ACCESS_CP15(c12, 0, c8, 4 | x) |
| #define ICC_AP0R0 __ICC_AP0Rx(0) |
| #define ICC_AP0R1 __ICC_AP0Rx(1) |
| #define ICC_AP0R2 __ICC_AP0Rx(2) |
| #define ICC_AP0R3 __ICC_AP0Rx(3) |
| |
| #define __ICC_AP1Rx(x) __ACCESS_CP15(c12, 0, c9, x) |
| #define ICC_AP1R0 __ICC_AP1Rx(0) |
| #define ICC_AP1R1 __ICC_AP1Rx(1) |
| #define ICC_AP1R2 __ICC_AP1Rx(2) |
| #define ICC_AP1R3 __ICC_AP1Rx(3) |
| |
| #define ICC_HSRE __ACCESS_CP15(c12, 4, c9, 5) |
| |
| #define ICH_VSEIR __ACCESS_CP15(c12, 4, c9, 4) |
| #define ICH_HCR __ACCESS_CP15(c12, 4, c11, 0) |
| #define ICH_VTR __ACCESS_CP15(c12, 4, c11, 1) |
| #define ICH_MISR __ACCESS_CP15(c12, 4, c11, 2) |
| #define ICH_EISR __ACCESS_CP15(c12, 4, c11, 3) |
| #define ICH_ELRSR __ACCESS_CP15(c12, 4, c11, 5) |
| #define ICH_VMCR __ACCESS_CP15(c12, 4, c11, 7) |
| |
| #define __LR0(x) __ACCESS_CP15(c12, 4, c12, x) |
| #define __LR8(x) __ACCESS_CP15(c12, 4, c13, x) |
| |
| #define ICH_LR0 __LR0(0) |
| #define ICH_LR1 __LR0(1) |
| #define ICH_LR2 __LR0(2) |
| #define ICH_LR3 __LR0(3) |
| #define ICH_LR4 __LR0(4) |
| #define ICH_LR5 __LR0(5) |
| #define ICH_LR6 __LR0(6) |
| #define ICH_LR7 __LR0(7) |
| #define ICH_LR8 __LR8(0) |
| #define ICH_LR9 __LR8(1) |
| #define ICH_LR10 __LR8(2) |
| #define ICH_LR11 __LR8(3) |
| #define ICH_LR12 __LR8(4) |
| #define ICH_LR13 __LR8(5) |
| #define ICH_LR14 __LR8(6) |
| #define ICH_LR15 __LR8(7) |
| |
| /* LR top half */ |
| #define __LRC0(x) __ACCESS_CP15(c12, 4, c14, x) |
| #define __LRC8(x) __ACCESS_CP15(c12, 4, c15, x) |
| |
| #define ICH_LRC0 __LRC0(0) |
| #define ICH_LRC1 __LRC0(1) |
| #define ICH_LRC2 __LRC0(2) |
| #define ICH_LRC3 __LRC0(3) |
| #define ICH_LRC4 __LRC0(4) |
| #define ICH_LRC5 __LRC0(5) |
| #define ICH_LRC6 __LRC0(6) |
| #define ICH_LRC7 __LRC0(7) |
| #define ICH_LRC8 __LRC8(0) |
| #define ICH_LRC9 __LRC8(1) |
| #define ICH_LRC10 __LRC8(2) |
| #define ICH_LRC11 __LRC8(3) |
| #define ICH_LRC12 __LRC8(4) |
| #define ICH_LRC13 __LRC8(5) |
| #define ICH_LRC14 __LRC8(6) |
| #define ICH_LRC15 __LRC8(7) |
| |
| #define __ICH_AP0Rx(x) __ACCESS_CP15(c12, 4, c8, x) |
| #define ICH_AP0R0 __ICH_AP0Rx(0) |
| #define ICH_AP0R1 __ICH_AP0Rx(1) |
| #define ICH_AP0R2 __ICH_AP0Rx(2) |
| #define ICH_AP0R3 __ICH_AP0Rx(3) |
| |
| #define __ICH_AP1Rx(x) __ACCESS_CP15(c12, 4, c9, x) |
| #define ICH_AP1R0 __ICH_AP1Rx(0) |
| #define ICH_AP1R1 __ICH_AP1Rx(1) |
| #define ICH_AP1R2 __ICH_AP1Rx(2) |
| #define ICH_AP1R3 __ICH_AP1Rx(3) |
| |
| /* A32-to-A64 mappings used by VGIC save/restore */ |
| |
| #define CPUIF_MAP(a32, a64) \ |
| static inline void write_ ## a64(u32 val) \ |
| { \ |
| write_sysreg(val, a32); \ |
| } \ |
| static inline u32 read_ ## a64(void) \ |
| { \ |
| return read_sysreg(a32); \ |
| } \ |
| |
| #define CPUIF_MAP_LO_HI(a32lo, a32hi, a64) \ |
| static inline void write_ ## a64(u64 val) \ |
| { \ |
| write_sysreg(lower_32_bits(val), a32lo);\ |
| write_sysreg(upper_32_bits(val), a32hi);\ |
| } \ |
| static inline u64 read_ ## a64(void) \ |
| { \ |
| u64 val = read_sysreg(a32lo); \ |
| \ |
| val |= (u64)read_sysreg(a32hi) << 32; \ |
| \ |
| return val; \ |
| } |
| |
| CPUIF_MAP(ICC_PMR, ICC_PMR_EL1) |
| CPUIF_MAP(ICC_AP0R0, ICC_AP0R0_EL1) |
| CPUIF_MAP(ICC_AP0R1, ICC_AP0R1_EL1) |
| CPUIF_MAP(ICC_AP0R2, ICC_AP0R2_EL1) |
| CPUIF_MAP(ICC_AP0R3, ICC_AP0R3_EL1) |
| CPUIF_MAP(ICC_AP1R0, ICC_AP1R0_EL1) |
| CPUIF_MAP(ICC_AP1R1, ICC_AP1R1_EL1) |
| CPUIF_MAP(ICC_AP1R2, ICC_AP1R2_EL1) |
| CPUIF_MAP(ICC_AP1R3, ICC_AP1R3_EL1) |
| |
| CPUIF_MAP(ICH_HCR, ICH_HCR_EL2) |
| CPUIF_MAP(ICH_VTR, ICH_VTR_EL2) |
| CPUIF_MAP(ICH_MISR, ICH_MISR_EL2) |
| CPUIF_MAP(ICH_EISR, ICH_EISR_EL2) |
| CPUIF_MAP(ICH_ELRSR, ICH_ELRSR_EL2) |
| CPUIF_MAP(ICH_VMCR, ICH_VMCR_EL2) |
| CPUIF_MAP(ICH_AP0R3, ICH_AP0R3_EL2) |
| CPUIF_MAP(ICH_AP0R2, ICH_AP0R2_EL2) |
| CPUIF_MAP(ICH_AP0R1, ICH_AP0R1_EL2) |
| CPUIF_MAP(ICH_AP0R0, ICH_AP0R0_EL2) |
| CPUIF_MAP(ICH_AP1R3, ICH_AP1R3_EL2) |
| CPUIF_MAP(ICH_AP1R2, ICH_AP1R2_EL2) |
| CPUIF_MAP(ICH_AP1R1, ICH_AP1R1_EL2) |
| CPUIF_MAP(ICH_AP1R0, ICH_AP1R0_EL2) |
| CPUIF_MAP(ICC_HSRE, ICC_SRE_EL2) |
| CPUIF_MAP(ICC_SRE, ICC_SRE_EL1) |
| |
| CPUIF_MAP_LO_HI(ICH_LR15, ICH_LRC15, ICH_LR15_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR14, ICH_LRC14, ICH_LR14_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR13, ICH_LRC13, ICH_LR13_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR12, ICH_LRC12, ICH_LR12_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR11, ICH_LRC11, ICH_LR11_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR10, ICH_LRC10, ICH_LR10_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR9, ICH_LRC9, ICH_LR9_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR8, ICH_LRC8, ICH_LR8_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR7, ICH_LRC7, ICH_LR7_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR6, ICH_LRC6, ICH_LR6_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR5, ICH_LRC5, ICH_LR5_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR4, ICH_LRC4, ICH_LR4_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR3, ICH_LRC3, ICH_LR3_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR2, ICH_LRC2, ICH_LR2_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR1, ICH_LRC1, ICH_LR1_EL2) |
| CPUIF_MAP_LO_HI(ICH_LR0, ICH_LRC0, ICH_LR0_EL2) |
| |
| #define read_gicreg(r) read_##r() |
| #define write_gicreg(v, r) write_##r(v) |
| |
| /* Low-level accessors */ |
| |
| static inline void gic_write_eoir(u32 irq) |
| { |
| write_sysreg(irq, ICC_EOIR1); |
| isb(); |
| } |
| |
| static inline void gic_write_dir(u32 val) |
| { |
| write_sysreg(val, ICC_DIR); |
| isb(); |
| } |
| |
| static inline u32 gic_read_iar(void) |
| { |
| u32 irqstat = read_sysreg(ICC_IAR1); |
| |
| dsb(sy); |
| |
| return irqstat; |
| } |
| |
| static inline void gic_write_ctlr(u32 val) |
| { |
| write_sysreg(val, ICC_CTLR); |
| isb(); |
| } |
| |
| static inline u32 gic_read_ctlr(void) |
| { |
| return read_sysreg(ICC_CTLR); |
| } |
| |
| static inline void gic_write_grpen1(u32 val) |
| { |
| write_sysreg(val, ICC_IGRPEN1); |
| isb(); |
| } |
| |
| static inline void gic_write_sgi1r(u64 val) |
| { |
| write_sysreg(val, ICC_SGI1R); |
| } |
| |
| static inline u32 gic_read_sre(void) |
| { |
| return read_sysreg(ICC_SRE); |
| } |
| |
| static inline void gic_write_sre(u32 val) |
| { |
| write_sysreg(val, ICC_SRE); |
| isb(); |
| } |
| |
| static inline void gic_write_bpr1(u32 val) |
| { |
| write_sysreg(val, ICC_BPR1); |
| } |
| |
| static inline u32 gic_read_pmr(void) |
| { |
| return read_sysreg(ICC_PMR); |
| } |
| |
| static inline void gic_write_pmr(u32 val) |
| { |
| write_sysreg(val, ICC_PMR); |
| } |
| |
| static inline u32 gic_read_rpr(void) |
| { |
| return read_sysreg(ICC_RPR); |
| } |
| |
| /* |
| * Even in 32bit systems that use LPAE, there is no guarantee that the I/O |
| * interface provides true 64bit atomic accesses, so using strd/ldrd doesn't |
| * make much sense. |
| * Moreover, 64bit I/O emulation is extremely difficult to implement on |
| * AArch32, since the syndrome register doesn't provide any information for |
| * them. |
| * Consequently, the following IO helpers use 32bit accesses. |
| */ |
| static inline void __gic_writeq_nonatomic(u64 val, volatile void __iomem *addr) |
| { |
| writel_relaxed((u32)val, addr); |
| writel_relaxed((u32)(val >> 32), addr + 4); |
| } |
| |
| static inline u64 __gic_readq_nonatomic(const volatile void __iomem *addr) |
| { |
| u64 val; |
| |
| val = readl_relaxed(addr); |
| val |= (u64)readl_relaxed(addr + 4) << 32; |
| return val; |
| } |
| |
| #define gic_flush_dcache_to_poc(a,l) __cpuc_flush_dcache_area((a), (l)) |
| |
| /* |
| * GICD_IROUTERn, contain the affinity values associated to each interrupt. |
| * The upper-word (aff3) will always be 0, so there is no need for a lock. |
| */ |
| #define gic_write_irouter(v, c) __gic_writeq_nonatomic(v, c) |
| |
| /* |
| * GICR_TYPER is an ID register and doesn't need atomicity. |
| */ |
| #define gic_read_typer(c) __gic_readq_nonatomic(c) |
| |
| /* |
| * GITS_BASER - hi and lo bits may be accessed independently. |
| */ |
| #define gits_read_baser(c) __gic_readq_nonatomic(c) |
| #define gits_write_baser(v, c) __gic_writeq_nonatomic(v, c) |
| |
| /* |
| * GICR_PENDBASER and GICR_PROPBASE are changed with LPIs disabled, so they |
| * won't be being used during any updates and can be changed non-atomically |
| */ |
| #define gicr_read_propbaser(c) __gic_readq_nonatomic(c) |
| #define gicr_write_propbaser(v, c) __gic_writeq_nonatomic(v, c) |
| #define gicr_read_pendbaser(c) __gic_readq_nonatomic(c) |
| #define gicr_write_pendbaser(v, c) __gic_writeq_nonatomic(v, c) |
| |
| /* |
| * GICR_xLPIR - only the lower bits are significant |
| */ |
| #define gic_read_lpir(c) readl_relaxed(c) |
| #define gic_write_lpir(v, c) writel_relaxed(lower_32_bits(v), c) |
| |
| /* |
| * GITS_TYPER is an ID register and doesn't need atomicity. |
| */ |
| #define gits_read_typer(c) __gic_readq_nonatomic(c) |
| |
| /* |
| * GITS_CBASER - hi and lo bits may be accessed independently. |
| */ |
| #define gits_read_cbaser(c) __gic_readq_nonatomic(c) |
| #define gits_write_cbaser(v, c) __gic_writeq_nonatomic(v, c) |
| |
| /* |
| * GITS_CWRITER - hi and lo bits may be accessed independently. |
| */ |
| #define gits_write_cwriter(v, c) __gic_writeq_nonatomic(v, c) |
| |
| /* |
| * GITS_VPROPBASER - hi and lo bits may be accessed independently. |
| */ |
| #define gits_write_vpropbaser(v, c) __gic_writeq_nonatomic(v, c) |
| |
| /* |
| * GITS_VPENDBASER - the Valid bit must be cleared before changing |
| * anything else. |
| */ |
| static inline void gits_write_vpendbaser(u64 val, void __iomem *addr) |
| { |
| u32 tmp; |
| |
| tmp = readl_relaxed(addr + 4); |
| if (tmp & (GICR_VPENDBASER_Valid >> 32)) { |
| tmp &= ~(GICR_VPENDBASER_Valid >> 32); |
| writel_relaxed(tmp, addr + 4); |
| } |
| |
| /* |
| * Use the fact that __gic_writeq_nonatomic writes the second |
| * half of the 64bit quantity after the first. |
| */ |
| __gic_writeq_nonatomic(val, addr); |
| } |
| |
| #define gits_read_vpendbaser(c) __gic_readq_nonatomic(c) |
| |
| static inline bool gic_prio_masking_enabled(void) |
| { |
| return false; |
| } |
| |
| static inline void gic_pmr_mask_irqs(void) |
| { |
| /* Should not get called. */ |
| WARN_ON_ONCE(true); |
| } |
| |
| static inline void gic_arch_enable_irqs(void) |
| { |
| /* Should not get called. */ |
| WARN_ON_ONCE(true); |
| } |
| |
| #endif /* !__ASSEMBLY__ */ |
| #endif /* !__ASM_ARCH_GICV3_H */ |