/* 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 #include /* 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_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) #ifndef CONFIG_64BIT #define SR_SD _AC(0x80000000, UL) /* FS/XS dirty */ #else #define SR_SD _AC(0x8000000000000000, UL) /* FS/XS dirty */ #endif /* SATP flags */ #ifndef CONFIG_64BIT #define SATP_PPN _AC(0x003FFFFF, UL) #define SATP_MODE_32 _AC(0x80000000, UL) #define SATP_MODE SATP_MODE_32 #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 SATP_MODE_39 #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_M_SOFT 3 #define IRQ_S_TIMER 5 #define IRQ_M_TIMER 7 #define IRQ_S_EXT 9 #define IRQ_M_EXT 11 #define IRQ_PMU_OVF 13 /* Exception causes */ #define EXC_INST_MISALIGNED 0 #define EXC_INST_ACCESS 1 #define EXC_BREAKPOINT 3 #define EXC_LOAD_ACCESS 5 #define EXC_STORE_ACCESS 7 #define EXC_SYSCALL 8 #define EXC_INST_PAGE_FAULT 12 #define EXC_LOAD_PAGE_FAULT 13 #define EXC_STORE_PAGE_FAULT 15 /* 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 /* 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_MSTATUS 0x300 #define CSR_MISA 0x301 #define CSR_MIE 0x304 #define CSR_MTVEC 0x305 #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 #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 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 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) #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 */