On Sat, Sep 02, 2023 at 08:59:25PM +0800, Haibo Xu wrote:
> Borrow the csr definitions and operations from kernel's
> arch/riscv/include/asm/csr.h to tools/ for riscv.
>
> Signed-off-by: Haibo Xu <haibo1.xu@xxxxxxxxx>
> ---
> tools/arch/riscv/include/asm/csr.h | 521 +++++++++++++++++++++++++++++
> 1 file changed, 521 insertions(+)
> create mode 100644 tools/arch/riscv/include/asm/csr.h
>
> diff --git a/tools/arch/riscv/include/asm/csr.h b/tools/arch/riscv/include/asm/csr.h
> new file mode 100644
> index 000000000000..4e86c82aacbd
> --- /dev/null
> +++ b/tools/arch/riscv/include/asm/csr.h
> @@ -0,0 +1,521 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (C) 2015 Regents of the University of California
> + */
> +
> +#ifndef _ASM_RISCV_CSR_H
> +#define _ASM_RISCV_CSR_H
> +
> +#include <linux/bits.h>
> +
> +/* Status register flags */
> +#define SR_SIE _AC(0x00000002, UL) /* Supervisor Interrupt Enable */
> +#define SR_MIE _AC(0x00000008, UL) /* Machine Interrupt Enable */
> +#define SR_SPIE _AC(0x00000020, UL) /* Previous Supervisor IE */
> +#define SR_MPIE _AC(0x00000080, UL) /* Previous Machine IE */
> +#define SR_SPP _AC(0x00000100, UL) /* Previously Supervisor */
> +#define SR_MPP _AC(0x00001800, UL) /* Previously Machine */
> +#define SR_SUM _AC(0x00040000, UL) /* Supervisor User Memory Access */
> +
> +#define SR_FS _AC(0x00006000, UL) /* Floating-point Status */
> +#define SR_FS_OFF _AC(0x00000000, UL)
> +#define SR_FS_INITIAL _AC(0x00002000, UL)
> +#define SR_FS_CLEAN _AC(0x00004000, UL)
> +#define SR_FS_DIRTY _AC(0x00006000, UL)
> +
> +#define SR_VS _AC(0x00000600, UL) /* Vector Status */
> +#define SR_VS_OFF _AC(0x00000000, UL)
> +#define SR_VS_INITIAL _AC(0x00000200, UL)
> +#define SR_VS_CLEAN _AC(0x00000400, UL)
> +#define SR_VS_DIRTY _AC(0x00000600, UL)
> +
> +#define SR_XS _AC(0x00018000, UL) /* Extension Status */
> +#define SR_XS_OFF _AC(0x00000000, UL)
> +#define SR_XS_INITIAL _AC(0x00008000, UL)
> +#define SR_XS_CLEAN _AC(0x00010000, UL)
> +#define SR_XS_DIRTY _AC(0x00018000, UL)
> +
> +#define SR_FS_VS (SR_FS | SR_VS) /* Vector and Floating-Point Unit */
> +
> +#ifndef CONFIG_64BIT
How do we ensure CONFIG_64BIT is set?
Thanks,
drew
> +#define SR_SD _AC(0x80000000, UL) /* FS/VS/XS dirty */
> +#else
> +#define SR_SD _AC(0x8000000000000000, UL) /* FS/VS/XS dirty */
> +#endif
> +
> +#ifdef CONFIG_64BIT
> +#define SR_UXL _AC(0x300000000, UL) /* XLEN mask for U-mode */
> +#define SR_UXL_32 _AC(0x100000000, UL) /* XLEN = 32 for U-mode */
> +#define SR_UXL_64 _AC(0x200000000, UL) /* XLEN = 64 for U-mode */
> +#endif
> +
> +/* SATP flags */
> +#ifndef CONFIG_64BIT
> +#define SATP_PPN _AC(0x003FFFFF, UL)
> +#define SATP_MODE_32 _AC(0x80000000, UL)
> +#define SATP_ASID_BITS 9
> +#define SATP_ASID_SHIFT 22
> +#define SATP_ASID_MASK _AC(0x1FF, UL)
> +#else
> +#define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL)
> +#define SATP_MODE_39 _AC(0x8000000000000000, UL)
> +#define SATP_MODE_48 _AC(0x9000000000000000, UL)
> +#define SATP_MODE_57 _AC(0xa000000000000000, UL)
> +#define SATP_ASID_BITS 16
> +#define SATP_ASID_SHIFT 44
> +#define SATP_ASID_MASK _AC(0xFFFF, UL)
> +#endif
> +
> +/* Exception cause high bit - is an interrupt if set */
> +#define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1))
> +
> +/* Interrupt causes (minus the high bit) */
> +#define IRQ_S_SOFT 1
> +#define IRQ_VS_SOFT 2
> +#define IRQ_M_SOFT 3
> +#define IRQ_S_TIMER 5
> +#define IRQ_VS_TIMER 6
> +#define IRQ_M_TIMER 7
> +#define IRQ_S_EXT 9
> +#define IRQ_VS_EXT 10
> +#define IRQ_M_EXT 11
> +#define IRQ_S_GEXT 12
> +#define IRQ_PMU_OVF 13
> +#define IRQ_LOCAL_MAX (IRQ_PMU_OVF + 1)
> +#define IRQ_LOCAL_MASK GENMASK((IRQ_LOCAL_MAX - 1), 0)
> +
> +/* Exception causes */
> +#define EXC_INST_MISALIGNED 0
> +#define EXC_INST_ACCESS 1
> +#define EXC_INST_ILLEGAL 2
> +#define EXC_BREAKPOINT 3
> +#define EXC_LOAD_MISALIGNED 4
> +#define EXC_LOAD_ACCESS 5
> +#define EXC_STORE_MISALIGNED 6
> +#define EXC_STORE_ACCESS 7
> +#define EXC_SYSCALL 8
> +#define EXC_HYPERVISOR_SYSCALL 9
> +#define EXC_SUPERVISOR_SYSCALL 10
> +#define EXC_INST_PAGE_FAULT 12
> +#define EXC_LOAD_PAGE_FAULT 13
> +#define EXC_STORE_PAGE_FAULT 15
> +#define EXC_INST_GUEST_PAGE_FAULT 20
> +#define EXC_LOAD_GUEST_PAGE_FAULT 21
> +#define EXC_VIRTUAL_INST_FAULT 22
> +#define EXC_STORE_GUEST_PAGE_FAULT 23
> +
> +/* PMP configuration */
> +#define PMP_R 0x01
> +#define PMP_W 0x02
> +#define PMP_X 0x04
> +#define PMP_A 0x18
> +#define PMP_A_TOR 0x08
> +#define PMP_A_NA4 0x10
> +#define PMP_A_NAPOT 0x18
> +#define PMP_L 0x80
> +
> +/* HSTATUS flags */
> +#ifdef CONFIG_64BIT
> +#define HSTATUS_VSXL _AC(0x300000000, UL)
> +#define HSTATUS_VSXL_SHIFT 32
> +#endif
> +#define HSTATUS_VTSR _AC(0x00400000, UL)
> +#define HSTATUS_VTW _AC(0x00200000, UL)
> +#define HSTATUS_VTVM _AC(0x00100000, UL)
> +#define HSTATUS_VGEIN _AC(0x0003f000, UL)
> +#define HSTATUS_VGEIN_SHIFT 12
> +#define HSTATUS_HU _AC(0x00000200, UL)
> +#define HSTATUS_SPVP _AC(0x00000100, UL)
> +#define HSTATUS_SPV _AC(0x00000080, UL)
> +#define HSTATUS_GVA _AC(0x00000040, UL)
> +#define HSTATUS_VSBE _AC(0x00000020, UL)
> +
> +/* HGATP flags */
> +#define HGATP_MODE_OFF _AC(0, UL)
> +#define HGATP_MODE_SV32X4 _AC(1, UL)
> +#define HGATP_MODE_SV39X4 _AC(8, UL)
> +#define HGATP_MODE_SV48X4 _AC(9, UL)
> +#define HGATP_MODE_SV57X4 _AC(10, UL)
> +
> +#define HGATP32_MODE_SHIFT 31
> +#define HGATP32_VMID_SHIFT 22
> +#define HGATP32_VMID GENMASK(28, 22)
> +#define HGATP32_PPN GENMASK(21, 0)
> +
> +#define HGATP64_MODE_SHIFT 60
> +#define HGATP64_VMID_SHIFT 44
> +#define HGATP64_VMID GENMASK(57, 44)
> +#define HGATP64_PPN GENMASK(43, 0)
> +
> +#define HGATP_PAGE_SHIFT 12
> +
> +#ifdef CONFIG_64BIT
> +#define HGATP_PPN HGATP64_PPN
> +#define HGATP_VMID_SHIFT HGATP64_VMID_SHIFT
> +#define HGATP_VMID HGATP64_VMID
> +#define HGATP_MODE_SHIFT HGATP64_MODE_SHIFT
> +#else
> +#define HGATP_PPN HGATP32_PPN
> +#define HGATP_VMID_SHIFT HGATP32_VMID_SHIFT
> +#define HGATP_VMID HGATP32_VMID
> +#define HGATP_MODE_SHIFT HGATP32_MODE_SHIFT
> +#endif
> +
> +/* VSIP & HVIP relation */
> +#define VSIP_TO_HVIP_SHIFT (IRQ_VS_SOFT - IRQ_S_SOFT)
> +#define VSIP_VALID_MASK ((_AC(1, UL) << IRQ_S_SOFT) | \
> + (_AC(1, UL) << IRQ_S_TIMER) | \
> + (_AC(1, UL) << IRQ_S_EXT))
> +
> +/* AIA CSR bits */
> +#define TOPI_IID_SHIFT 16
> +#define TOPI_IID_MASK GENMASK(11, 0)
> +#define TOPI_IPRIO_MASK GENMASK(7, 0)
> +#define TOPI_IPRIO_BITS 8
> +
> +#define TOPEI_ID_SHIFT 16
> +#define TOPEI_ID_MASK GENMASK(10, 0)
> +#define TOPEI_PRIO_MASK GENMASK(10, 0)
> +
> +#define ISELECT_IPRIO0 0x30
> +#define ISELECT_IPRIO15 0x3f
> +#define ISELECT_MASK GENMASK(8, 0)
> +
> +#define HVICTL_VTI BIT(30)
> +#define HVICTL_IID GENMASK(27, 16)
> +#define HVICTL_IID_SHIFT 16
> +#define HVICTL_DPR BIT(9)
> +#define HVICTL_IPRIOM BIT(8)
> +#define HVICTL_IPRIO GENMASK(7, 0)
> +
> +/* xENVCFG flags */
> +#define ENVCFG_STCE (_AC(1, ULL) << 63)
> +#define ENVCFG_PBMTE (_AC(1, ULL) << 62)
> +#define ENVCFG_CBZE (_AC(1, UL) << 7)
> +#define ENVCFG_CBCFE (_AC(1, UL) << 6)
> +#define ENVCFG_CBIE_SHIFT 4
> +#define ENVCFG_CBIE (_AC(0x3, UL) << ENVCFG_CBIE_SHIFT)
> +#define ENVCFG_CBIE_ILL _AC(0x0, UL)
> +#define ENVCFG_CBIE_FLUSH _AC(0x1, UL)
> +#define ENVCFG_CBIE_INV _AC(0x3, UL)
> +#define ENVCFG_FIOM _AC(0x1, UL)
> +
> +/* symbolic CSR names: */
> +#define CSR_CYCLE 0xc00
> +#define CSR_TIME 0xc01
> +#define CSR_INSTRET 0xc02
> +#define CSR_HPMCOUNTER3 0xc03
> +#define CSR_HPMCOUNTER4 0xc04
> +#define CSR_HPMCOUNTER5 0xc05
> +#define CSR_HPMCOUNTER6 0xc06
> +#define CSR_HPMCOUNTER7 0xc07
> +#define CSR_HPMCOUNTER8 0xc08
> +#define CSR_HPMCOUNTER9 0xc09
> +#define CSR_HPMCOUNTER10 0xc0a
> +#define CSR_HPMCOUNTER11 0xc0b
> +#define CSR_HPMCOUNTER12 0xc0c
> +#define CSR_HPMCOUNTER13 0xc0d
> +#define CSR_HPMCOUNTER14 0xc0e
> +#define CSR_HPMCOUNTER15 0xc0f
> +#define CSR_HPMCOUNTER16 0xc10
> +#define CSR_HPMCOUNTER17 0xc11
> +#define CSR_HPMCOUNTER18 0xc12
> +#define CSR_HPMCOUNTER19 0xc13
> +#define CSR_HPMCOUNTER20 0xc14
> +#define CSR_HPMCOUNTER21 0xc15
> +#define CSR_HPMCOUNTER22 0xc16
> +#define CSR_HPMCOUNTER23 0xc17
> +#define CSR_HPMCOUNTER24 0xc18
> +#define CSR_HPMCOUNTER25 0xc19
> +#define CSR_HPMCOUNTER26 0xc1a
> +#define CSR_HPMCOUNTER27 0xc1b
> +#define CSR_HPMCOUNTER28 0xc1c
> +#define CSR_HPMCOUNTER29 0xc1d
> +#define CSR_HPMCOUNTER30 0xc1e
> +#define CSR_HPMCOUNTER31 0xc1f
> +#define CSR_CYCLEH 0xc80
> +#define CSR_TIMEH 0xc81
> +#define CSR_INSTRETH 0xc82
> +#define CSR_HPMCOUNTER3H 0xc83
> +#define CSR_HPMCOUNTER4H 0xc84
> +#define CSR_HPMCOUNTER5H 0xc85
> +#define CSR_HPMCOUNTER6H 0xc86
> +#define CSR_HPMCOUNTER7H 0xc87
> +#define CSR_HPMCOUNTER8H 0xc88
> +#define CSR_HPMCOUNTER9H 0xc89
> +#define CSR_HPMCOUNTER10H 0xc8a
> +#define CSR_HPMCOUNTER11H 0xc8b
> +#define CSR_HPMCOUNTER12H 0xc8c
> +#define CSR_HPMCOUNTER13H 0xc8d
> +#define CSR_HPMCOUNTER14H 0xc8e
> +#define CSR_HPMCOUNTER15H 0xc8f
> +#define CSR_HPMCOUNTER16H 0xc90
> +#define CSR_HPMCOUNTER17H 0xc91
> +#define CSR_HPMCOUNTER18H 0xc92
> +#define CSR_HPMCOUNTER19H 0xc93
> +#define CSR_HPMCOUNTER20H 0xc94
> +#define CSR_HPMCOUNTER21H 0xc95
> +#define CSR_HPMCOUNTER22H 0xc96
> +#define CSR_HPMCOUNTER23H 0xc97
> +#define CSR_HPMCOUNTER24H 0xc98
> +#define CSR_HPMCOUNTER25H 0xc99
> +#define CSR_HPMCOUNTER26H 0xc9a
> +#define CSR_HPMCOUNTER27H 0xc9b
> +#define CSR_HPMCOUNTER28H 0xc9c
> +#define CSR_HPMCOUNTER29H 0xc9d
> +#define CSR_HPMCOUNTER30H 0xc9e
> +#define CSR_HPMCOUNTER31H 0xc9f
> +
> +#define CSR_SSCOUNTOVF 0xda0
> +
> +#define CSR_SSTATUS 0x100
> +#define CSR_SIE 0x104
> +#define CSR_STVEC 0x105
> +#define CSR_SCOUNTEREN 0x106
> +#define CSR_SSCRATCH 0x140
> +#define CSR_SEPC 0x141
> +#define CSR_SCAUSE 0x142
> +#define CSR_STVAL 0x143
> +#define CSR_SIP 0x144
> +#define CSR_SATP 0x180
> +
> +#define CSR_STIMECMP 0x14D
> +#define CSR_STIMECMPH 0x15D
> +
> +/* Supervisor-Level Window to Indirectly Accessed Registers (AIA) */
> +#define CSR_SISELECT 0x150
> +#define CSR_SIREG 0x151
> +
> +/* Supervisor-Level Interrupts (AIA) */
> +#define CSR_STOPEI 0x15c
> +#define CSR_STOPI 0xdb0
> +
> +/* Supervisor-Level High-Half CSRs (AIA) */
> +#define CSR_SIEH 0x114
> +#define CSR_SIPH 0x154
> +
> +#define CSR_VSSTATUS 0x200
> +#define CSR_VSIE 0x204
> +#define CSR_VSTVEC 0x205
> +#define CSR_VSSCRATCH 0x240
> +#define CSR_VSEPC 0x241
> +#define CSR_VSCAUSE 0x242
> +#define CSR_VSTVAL 0x243
> +#define CSR_VSIP 0x244
> +#define CSR_VSATP 0x280
> +#define CSR_VSTIMECMP 0x24D
> +#define CSR_VSTIMECMPH 0x25D
> +
> +#define CSR_HSTATUS 0x600
> +#define CSR_HEDELEG 0x602
> +#define CSR_HIDELEG 0x603
> +#define CSR_HIE 0x604
> +#define CSR_HTIMEDELTA 0x605
> +#define CSR_HCOUNTEREN 0x606
> +#define CSR_HGEIE 0x607
> +#define CSR_HENVCFG 0x60a
> +#define CSR_HTIMEDELTAH 0x615
> +#define CSR_HENVCFGH 0x61a
> +#define CSR_HTVAL 0x643
> +#define CSR_HIP 0x644
> +#define CSR_HVIP 0x645
> +#define CSR_HTINST 0x64a
> +#define CSR_HGATP 0x680
> +#define CSR_HGEIP 0xe12
> +
> +/* Virtual Interrupts and Interrupt Priorities (H-extension with AIA) */
> +#define CSR_HVIEN 0x608
> +#define CSR_HVICTL 0x609
> +#define CSR_HVIPRIO1 0x646
> +#define CSR_HVIPRIO2 0x647
> +
> +/* VS-Level Window to Indirectly Accessed Registers (H-extension with AIA) */
> +#define CSR_VSISELECT 0x250
> +#define CSR_VSIREG 0x251
> +
> +/* VS-Level Interrupts (H-extension with AIA) */
> +#define CSR_VSTOPEI 0x25c
> +#define CSR_VSTOPI 0xeb0
> +
> +/* Hypervisor and VS-Level High-Half CSRs (H-extension with AIA) */
> +#define CSR_HIDELEGH 0x613
> +#define CSR_HVIENH 0x618
> +#define CSR_HVIPH 0x655
> +#define CSR_HVIPRIO1H 0x656
> +#define CSR_HVIPRIO2H 0x657
> +#define CSR_VSIEH 0x214
> +#define CSR_VSIPH 0x254
> +
> +#define CSR_MSTATUS 0x300
> +#define CSR_MISA 0x301
> +#define CSR_MIDELEG 0x303
> +#define CSR_MIE 0x304
> +#define CSR_MTVEC 0x305
> +#define CSR_MENVCFG 0x30a
> +#define CSR_MENVCFGH 0x31a
> +#define CSR_MSCRATCH 0x340
> +#define CSR_MEPC 0x341
> +#define CSR_MCAUSE 0x342
> +#define CSR_MTVAL 0x343
> +#define CSR_MIP 0x344
> +#define CSR_PMPCFG0 0x3a0
> +#define CSR_PMPADDR0 0x3b0
> +#define CSR_MVENDORID 0xf11
> +#define CSR_MARCHID 0xf12
> +#define CSR_MIMPID 0xf13
> +#define CSR_MHARTID 0xf14
> +
> +/* Machine-Level Window to Indirectly Accessed Registers (AIA) */
> +#define CSR_MISELECT 0x350
> +#define CSR_MIREG 0x351
> +
> +/* Machine-Level Interrupts (AIA) */
> +#define CSR_MTOPEI 0x35c
> +#define CSR_MTOPI 0xfb0
> +
> +/* Virtual Interrupts for Supervisor Level (AIA) */
> +#define CSR_MVIEN 0x308
> +#define CSR_MVIP 0x309
> +
> +/* Machine-Level High-Half CSRs (AIA) */
> +#define CSR_MIDELEGH 0x313
> +#define CSR_MIEH 0x314
> +#define CSR_MVIENH 0x318
> +#define CSR_MVIPH 0x319
> +#define CSR_MIPH 0x354
> +
> +#define CSR_VSTART 0x8
> +#define CSR_VCSR 0xf
> +#define CSR_VL 0xc20
> +#define CSR_VTYPE 0xc21
> +#define CSR_VLENB 0xc22
> +
> +#ifdef CONFIG_RISCV_M_MODE
> +# define CSR_STATUS CSR_MSTATUS
> +# define CSR_IE CSR_MIE
> +# define CSR_TVEC CSR_MTVEC
> +# define CSR_SCRATCH CSR_MSCRATCH
> +# define CSR_EPC CSR_MEPC
> +# define CSR_CAUSE CSR_MCAUSE
> +# define CSR_TVAL CSR_MTVAL
> +# define CSR_IP CSR_MIP
> +
> +# define CSR_IEH CSR_MIEH
> +# define CSR_ISELECT CSR_MISELECT
> +# define CSR_IREG CSR_MIREG
> +# define CSR_IPH CSR_MIPH
> +# define CSR_TOPEI CSR_MTOPEI
> +# define CSR_TOPI CSR_MTOPI
> +
> +# define SR_IE SR_MIE
> +# define SR_PIE SR_MPIE
> +# define SR_PP SR_MPP
> +
> +# define RV_IRQ_SOFT IRQ_M_SOFT
> +# define RV_IRQ_TIMER IRQ_M_TIMER
> +# define RV_IRQ_EXT IRQ_M_EXT
> +#else /* CONFIG_RISCV_M_MODE */
> +# define CSR_STATUS CSR_SSTATUS
> +# define CSR_IE CSR_SIE
> +# define CSR_TVEC CSR_STVEC
> +# define CSR_SCRATCH CSR_SSCRATCH
> +# define CSR_EPC CSR_SEPC
> +# define CSR_CAUSE CSR_SCAUSE
> +# define CSR_TVAL CSR_STVAL
> +# define CSR_IP CSR_SIP
> +
> +# define CSR_IEH CSR_SIEH
> +# define CSR_ISELECT CSR_SISELECT
> +# define CSR_IREG CSR_SIREG
> +# define CSR_IPH CSR_SIPH
> +# define CSR_TOPEI CSR_STOPEI
> +# define CSR_TOPI CSR_STOPI
> +
> +# define SR_IE SR_SIE
> +# define SR_PIE SR_SPIE
> +# define SR_PP SR_SPP
> +
> +# define RV_IRQ_SOFT IRQ_S_SOFT
> +# define RV_IRQ_TIMER IRQ_S_TIMER
> +# define RV_IRQ_EXT IRQ_S_EXT
> +# define RV_IRQ_PMU IRQ_PMU_OVF
> +# define SIP_LCOFIP (_AC(0x1, UL) << IRQ_PMU_OVF)
> +
> +#endif /* !CONFIG_RISCV_M_MODE */
> +
> +/* IE/IP (Supervisor/Machine Interrupt Enable/Pending) flags */
> +#define IE_SIE (_AC(0x1, UL) << RV_IRQ_SOFT)
> +#define IE_TIE (_AC(0x1, UL) << RV_IRQ_TIMER)
> +#define IE_EIE (_AC(0x1, UL) << RV_IRQ_EXT)
> +
> +#ifdef __ASSEMBLY__
> +#define __ASM_STR(x) x
> +#else
> +#define __ASM_STR(x) #x
> +#endif
> +
> +#ifndef __ASSEMBLY__
> +
> +#define csr_swap(csr, val) \
> +({ \
> + unsigned long __v = (unsigned long)(val); \
> + __asm__ __volatile__ ("csrrw %0, " __ASM_STR(csr) ", %1"\
> + : "=r" (__v) : "rK" (__v) \
> + : "memory"); \
> + __v; \
> +})
> +
> +#define csr_read(csr) \
> +({ \
> + register unsigned long __v; \
> + __asm__ __volatile__ ("csrr %0, " __ASM_STR(csr) \
> + : "=r" (__v) : \
> + : "memory"); \
> + __v; \
> +})
> +
> +#define csr_write(csr, val) \
> +({ \
> + unsigned long __v = (unsigned long)(val); \
> + __asm__ __volatile__ ("csrw " __ASM_STR(csr) ", %0" \
> + : : "rK" (__v) \
> + : "memory"); \
> +})
> +
> +#define csr_read_set(csr, val) \
> +({ \
> + unsigned long __v = (unsigned long)(val); \
> + __asm__ __volatile__ ("csrrs %0, " __ASM_STR(csr) ", %1"\
> + : "=r" (__v) : "rK" (__v) \
> + : "memory"); \
> + __v; \
> +})
> +
> +#define csr_set(csr, val) \
> +({ \
> + unsigned long __v = (unsigned long)(val); \
> + __asm__ __volatile__ ("csrs " __ASM_STR(csr) ", %0" \
> + : : "rK" (__v) \
> + : "memory"); \
> +})
> +
> +#define csr_read_clear(csr, val) \
> +({ \
> + unsigned long __v = (unsigned long)(val); \
> + __asm__ __volatile__ ("csrrc %0, " __ASM_STR(csr) ", %1"\
> + : "=r" (__v) : "rK" (__v) \
> + : "memory"); \
> + __v; \
> +})
> +
> +#define csr_clear(csr, val) \
> +({ \
> + unsigned long __v = (unsigned long)(val); \
> + __asm__ __volatile__ ("csrc " __ASM_STR(csr) ", %0" \
> + : : "rK" (__v) \
> + : "memory"); \
> +})
> +
> +#endif /* __ASSEMBLY__ */
> +
> +#endif /* _ASM_RISCV_CSR_H */
> --
> 2.34.1
>
