| /* 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 <asm/asm.h> |
| #include <linux/const.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_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_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 |
| |
| /* Exception causes */ |
| #define EXC_INST_MISALIGNED 0 |
| #define EXC_INST_ACCESS 1 |
| #define EXC_INST_ILLEGAL 2 |
| #define EXC_BREAKPOINT 3 |
| #define EXC_LOAD_ACCESS 5 |
| #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 HGATP32_MODE_SHIFT 31 |
| #define HGATP32_VMID_SHIFT 22 |
| #define HGATP32_VMID_MASK _AC(0x1FC00000, UL) |
| #define HGATP32_PPN _AC(0x003FFFFF, UL) |
| |
| #define HGATP64_MODE_SHIFT 60 |
| #define HGATP64_VMID_SHIFT 44 |
| #define HGATP64_VMID_MASK _AC(0x03FFF00000000000, UL) |
| #define HGATP64_PPN _AC(0x00000FFFFFFFFFFF, UL) |
| |
| #define HGATP_PAGE_SHIFT 12 |
| |
| #ifdef CONFIG_64BIT |
| #define HGATP_PPN HGATP64_PPN |
| #define HGATP_VMID_SHIFT HGATP64_VMID_SHIFT |
| #define HGATP_VMID_MASK HGATP64_VMID_MASK |
| #define HGATP_MODE_SHIFT HGATP64_MODE_SHIFT |
| #else |
| #define HGATP_PPN HGATP32_PPN |
| #define HGATP_VMID_SHIFT HGATP32_VMID_SHIFT |
| #define HGATP_VMID_MASK HGATP32_VMID_MASK |
| #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)) |
| |
| /* symbolic CSR names: */ |
| #define CSR_CYCLE 0xc00 |
| #define CSR_TIME 0xc01 |
| #define CSR_INSTRET 0xc02 |
| #define CSR_CYCLEH 0xc80 |
| #define CSR_TIMEH 0xc81 |
| #define CSR_INSTRETH 0xc82 |
| |
| #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_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_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_HTIMEDELTAH 0x615 |
| #define CSR_HTVAL 0x643 |
| #define CSR_HIP 0x644 |
| #define CSR_HVIP 0x645 |
| #define CSR_HTINST 0x64a |
| #define CSR_HGATP 0x680 |
| #define CSR_HGEIP 0xe12 |
| |
| #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 |
| #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 */ |
