/* * RISC-V Control and Status Registers. * * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu * Copyright (c) 2017-2018 SiFive, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2 or later, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see . */ #include "qemu/osdep.h" #include "qemu/log.h" #include "cpu.h" #include "qemu/main-loop.h" #include "exec/exec-all.h" /* CSR function table public API */ void riscv_get_csr_ops(int csrno, riscv_csr_operations *ops) { *ops = csr_ops[csrno & (CSR_TABLE_SIZE - 1)]; } void riscv_set_csr_ops(int csrno, riscv_csr_operations *ops) { csr_ops[csrno & (CSR_TABLE_SIZE - 1)] = *ops; } /* Predicates */ static RISCVException fs(CPURISCVState *env, int csrno) { #if !defined(CONFIG_USER_ONLY) /* loose check condition for fcsr in vector extension */ if ((csrno == CSR_FCSR) && (env->misa & RVV)) { return RISCV_EXCP_NONE; } if (!env->debugger && !riscv_cpu_fp_enabled(env)) { return RISCV_EXCP_ILLEGAL_INST; } #endif return RISCV_EXCP_NONE; } static RISCVException vs(CPURISCVState *env, int csrno) { if (env->misa & RVV) { return RISCV_EXCP_NONE; } return RISCV_EXCP_ILLEGAL_INST; } static RISCVException ctr(CPURISCVState *env, int csrno) { #if !defined(CONFIG_USER_ONLY) CPUState *cs = env_cpu(env); RISCVCPU *cpu = RISCV_CPU(cs); if (!cpu->cfg.ext_counters) { /* The Counters extensions is not enabled */ return RISCV_EXCP_ILLEGAL_INST; } if (riscv_cpu_virt_enabled(env)) { switch (csrno) { case CSR_CYCLE: if (!get_field(env->hcounteren, COUNTEREN_CY) && get_field(env->mcounteren, COUNTEREN_CY)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_TIME: if (!get_field(env->hcounteren, COUNTEREN_TM) && get_field(env->mcounteren, COUNTEREN_TM)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_INSTRET: if (!get_field(env->hcounteren, COUNTEREN_IR) && get_field(env->mcounteren, COUNTEREN_IR)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_HPMCOUNTER3...CSR_HPMCOUNTER31: if (!get_field(env->hcounteren, 1 << (csrno - CSR_HPMCOUNTER3)) && get_field(env->mcounteren, 1 << (csrno - CSR_HPMCOUNTER3))) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; } if (riscv_cpu_is_32bit(env)) { switch (csrno) { case CSR_CYCLEH: if (!get_field(env->hcounteren, COUNTEREN_CY) && get_field(env->mcounteren, COUNTEREN_CY)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_TIMEH: if (!get_field(env->hcounteren, COUNTEREN_TM) && get_field(env->mcounteren, COUNTEREN_TM)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_INSTRETH: if (!get_field(env->hcounteren, COUNTEREN_IR) && get_field(env->mcounteren, COUNTEREN_IR)) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; case CSR_HPMCOUNTER3H...CSR_HPMCOUNTER31H: if (!get_field(env->hcounteren, 1 << (csrno - CSR_HPMCOUNTER3H)) && get_field(env->mcounteren, 1 << (csrno - CSR_HPMCOUNTER3H))) { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; } } } #endif return RISCV_EXCP_NONE; } static RISCVException ctr32(CPURISCVState *env, int csrno) { if (!riscv_cpu_is_32bit(env)) { return RISCV_EXCP_ILLEGAL_INST; } return ctr(env, csrno); } #if !defined(CONFIG_USER_ONLY) static RISCVException any(CPURISCVState *env, int csrno) { return RISCV_EXCP_NONE; } static RISCVException any32(CPURISCVState *env, int csrno) { if (!riscv_cpu_is_32bit(env)) { return RISCV_EXCP_ILLEGAL_INST; } return any(env, csrno); } static RISCVException smode(CPURISCVState *env, int csrno) { if (riscv_has_ext(env, RVS)) { return RISCV_EXCP_NONE; } return RISCV_EXCP_ILLEGAL_INST; } static RISCVException hmode(CPURISCVState *env, int csrno) { if (riscv_has_ext(env, RVS) && riscv_has_ext(env, RVH)) { /* Hypervisor extension is supported */ if ((env->priv == PRV_S && !riscv_cpu_virt_enabled(env)) || env->priv == PRV_M) { return RISCV_EXCP_NONE; } else { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } } return RISCV_EXCP_ILLEGAL_INST; } static RISCVException hmode32(CPURISCVState *env, int csrno) { if (!riscv_cpu_is_32bit(env)) { if (riscv_cpu_virt_enabled(env)) { return RISCV_EXCP_ILLEGAL_INST; } else { return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } } return hmode(env, csrno); } static RISCVException pmp(CPURISCVState *env, int csrno) { if (riscv_feature(env, RISCV_FEATURE_PMP)) { return RISCV_EXCP_NONE; } return RISCV_EXCP_ILLEGAL_INST; } static RISCVException epmp(CPURISCVState *env, int csrno) { if (env->priv == PRV_M && riscv_feature(env, RISCV_FEATURE_EPMP)) { return RISCV_EXCP_NONE; } return RISCV_EXCP_ILLEGAL_INST; } #endif /* User Floating-Point CSRs */ static RISCVException read_fflags(CPURISCVState *env, int csrno, target_ulong *val) { *val = riscv_cpu_get_fflags(env); return RISCV_EXCP_NONE; } static RISCVException write_fflags(CPURISCVState *env, int csrno, target_ulong val) { #if !defined(CONFIG_USER_ONLY) env->mstatus |= MSTATUS_FS; #endif riscv_cpu_set_fflags(env, val & (FSR_AEXC >> FSR_AEXC_SHIFT)); return RISCV_EXCP_NONE; } static RISCVException read_frm(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->frm; return RISCV_EXCP_NONE; } static RISCVException write_frm(CPURISCVState *env, int csrno, target_ulong val) { #if !defined(CONFIG_USER_ONLY) env->mstatus |= MSTATUS_FS; #endif env->frm = val & (FSR_RD >> FSR_RD_SHIFT); return RISCV_EXCP_NONE; } static RISCVException read_fcsr(CPURISCVState *env, int csrno, target_ulong *val) { *val = (riscv_cpu_get_fflags(env) << FSR_AEXC_SHIFT) | (env->frm << FSR_RD_SHIFT); if (vs(env, csrno) >= 0) { *val |= (env->vxrm << FSR_VXRM_SHIFT) | (env->vxsat << FSR_VXSAT_SHIFT); } return RISCV_EXCP_NONE; } static RISCVException write_fcsr(CPURISCVState *env, int csrno, target_ulong val) { #if !defined(CONFIG_USER_ONLY) env->mstatus |= MSTATUS_FS; #endif env->frm = (val & FSR_RD) >> FSR_RD_SHIFT; if (vs(env, csrno) >= 0) { env->vxrm = (val & FSR_VXRM) >> FSR_VXRM_SHIFT; env->vxsat = (val & FSR_VXSAT) >> FSR_VXSAT_SHIFT; } riscv_cpu_set_fflags(env, (val & FSR_AEXC) >> FSR_AEXC_SHIFT); return RISCV_EXCP_NONE; } static RISCVException read_vtype(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vtype; return RISCV_EXCP_NONE; } static RISCVException read_vl(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vl; return RISCV_EXCP_NONE; } static RISCVException read_vxrm(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vxrm; return RISCV_EXCP_NONE; } static RISCVException write_vxrm(CPURISCVState *env, int csrno, target_ulong val) { env->vxrm = val; return RISCV_EXCP_NONE; } static RISCVException read_vxsat(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vxsat; return RISCV_EXCP_NONE; } static RISCVException write_vxsat(CPURISCVState *env, int csrno, target_ulong val) { env->vxsat = val; return RISCV_EXCP_NONE; } static RISCVException read_vstart(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vstart; return RISCV_EXCP_NONE; } static RISCVException write_vstart(CPURISCVState *env, int csrno, target_ulong val) { env->vstart = val; return RISCV_EXCP_NONE; } /* User Timers and Counters */ static RISCVException read_instret(CPURISCVState *env, int csrno, target_ulong *val) { #if !defined(CONFIG_USER_ONLY) if (icount_enabled()) { *val = icount_get(); } else { *val = cpu_get_host_ticks(); } #else *val = cpu_get_host_ticks(); #endif return RISCV_EXCP_NONE; } static RISCVException read_instreth(CPURISCVState *env, int csrno, target_ulong *val) { #if !defined(CONFIG_USER_ONLY) if (icount_enabled()) { *val = icount_get() >> 32; } else { *val = cpu_get_host_ticks() >> 32; } #else *val = cpu_get_host_ticks() >> 32; #endif return RISCV_EXCP_NONE; } #if defined(CONFIG_USER_ONLY) static RISCVException read_time(CPURISCVState *env, int csrno, target_ulong *val) { *val = cpu_get_host_ticks(); return RISCV_EXCP_NONE; } static RISCVException read_timeh(CPURISCVState *env, int csrno, target_ulong *val) { *val = cpu_get_host_ticks() >> 32; return RISCV_EXCP_NONE; } #else /* CONFIG_USER_ONLY */ static RISCVException read_time(CPURISCVState *env, int csrno, target_ulong *val) { uint64_t delta = riscv_cpu_virt_enabled(env) ? env->htimedelta : 0; if (!env->rdtime_fn) { return RISCV_EXCP_ILLEGAL_INST; } *val = env->rdtime_fn(env->rdtime_fn_arg) + delta; return RISCV_EXCP_NONE; } static RISCVException read_timeh(CPURISCVState *env, int csrno, target_ulong *val) { uint64_t delta = riscv_cpu_virt_enabled(env) ? env->htimedelta : 0; if (!env->rdtime_fn) { return RISCV_EXCP_ILLEGAL_INST; } *val = (env->rdtime_fn(env->rdtime_fn_arg) + delta) >> 32; return RISCV_EXCP_NONE; } /* Machine constants */ #define M_MODE_INTERRUPTS (MIP_MSIP | MIP_MTIP | MIP_MEIP) #define S_MODE_INTERRUPTS (MIP_SSIP | MIP_STIP | MIP_SEIP) #define VS_MODE_INTERRUPTS (MIP_VSSIP | MIP_VSTIP | MIP_VSEIP) static const target_ulong delegable_ints = S_MODE_INTERRUPTS | VS_MODE_INTERRUPTS; static const target_ulong vs_delegable_ints = VS_MODE_INTERRUPTS; static const target_ulong all_ints = M_MODE_INTERRUPTS | S_MODE_INTERRUPTS | VS_MODE_INTERRUPTS; #define DELEGABLE_EXCPS ((1ULL << (RISCV_EXCP_INST_ADDR_MIS)) | \ (1ULL << (RISCV_EXCP_INST_ACCESS_FAULT)) | \ (1ULL << (RISCV_EXCP_ILLEGAL_INST)) | \ (1ULL << (RISCV_EXCP_BREAKPOINT)) | \ (1ULL << (RISCV_EXCP_LOAD_ADDR_MIS)) | \ (1ULL << (RISCV_EXCP_LOAD_ACCESS_FAULT)) | \ (1ULL << (RISCV_EXCP_STORE_AMO_ADDR_MIS)) | \ (1ULL << (RISCV_EXCP_STORE_AMO_ACCESS_FAULT)) | \ (1ULL << (RISCV_EXCP_U_ECALL)) | \ (1ULL << (RISCV_EXCP_S_ECALL)) | \ (1ULL << (RISCV_EXCP_VS_ECALL)) | \ (1ULL << (RISCV_EXCP_M_ECALL)) | \ (1ULL << (RISCV_EXCP_INST_PAGE_FAULT)) | \ (1ULL << (RISCV_EXCP_LOAD_PAGE_FAULT)) | \ (1ULL << (RISCV_EXCP_STORE_PAGE_FAULT)) | \ (1ULL << (RISCV_EXCP_INST_GUEST_PAGE_FAULT)) | \ (1ULL << (RISCV_EXCP_LOAD_GUEST_ACCESS_FAULT)) | \ (1ULL << (RISCV_EXCP_VIRT_INSTRUCTION_FAULT)) | \ (1ULL << (RISCV_EXCP_STORE_GUEST_AMO_ACCESS_FAULT))) static const target_ulong vs_delegable_excps = DELEGABLE_EXCPS & ~((1ULL << (RISCV_EXCP_S_ECALL)) | (1ULL << (RISCV_EXCP_VS_ECALL)) | (1ULL << (RISCV_EXCP_M_ECALL)) | (1ULL << (RISCV_EXCP_INST_GUEST_PAGE_FAULT)) | (1ULL << (RISCV_EXCP_LOAD_GUEST_ACCESS_FAULT)) | (1ULL << (RISCV_EXCP_VIRT_INSTRUCTION_FAULT)) | (1ULL << (RISCV_EXCP_STORE_GUEST_AMO_ACCESS_FAULT))); static const target_ulong sstatus_v1_10_mask = SSTATUS_SIE | SSTATUS_SPIE | SSTATUS_UIE | SSTATUS_UPIE | SSTATUS_SPP | SSTATUS_FS | SSTATUS_XS | SSTATUS_SUM | SSTATUS_MXR; static const target_ulong sip_writable_mask = SIP_SSIP | MIP_USIP | MIP_UEIP; static const target_ulong hip_writable_mask = MIP_VSSIP; static const target_ulong hvip_writable_mask = MIP_VSSIP | MIP_VSTIP | MIP_VSEIP; static const target_ulong vsip_writable_mask = MIP_VSSIP; static const char valid_vm_1_10_32[16] = { [VM_1_10_MBARE] = 1, [VM_1_10_SV32] = 1 }; static const char valid_vm_1_10_64[16] = { [VM_1_10_MBARE] = 1, [VM_1_10_SV39] = 1, [VM_1_10_SV48] = 1, [VM_1_10_SV57] = 1 }; /* Machine Information Registers */ static RISCVException read_zero(CPURISCVState *env, int csrno, target_ulong *val) { *val = 0; return RISCV_EXCP_NONE; } static RISCVException read_mhartid(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mhartid; return RISCV_EXCP_NONE; } /* Machine Trap Setup */ static RISCVException read_mstatus(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mstatus; return RISCV_EXCP_NONE; } static int validate_vm(CPURISCVState *env, target_ulong vm) { if (riscv_cpu_is_32bit(env)) { return valid_vm_1_10_32[vm & 0xf]; } else { return valid_vm_1_10_64[vm & 0xf]; } } static RISCVException write_mstatus(CPURISCVState *env, int csrno, target_ulong val) { uint64_t mstatus = env->mstatus; uint64_t mask = 0; int dirty; /* flush tlb on mstatus fields that affect VM */ if ((val ^ mstatus) & (MSTATUS_MXR | MSTATUS_MPP | MSTATUS_MPV | MSTATUS_MPRV | MSTATUS_SUM)) { tlb_flush(env_cpu(env)); } mask = MSTATUS_SIE | MSTATUS_SPIE | MSTATUS_MIE | MSTATUS_MPIE | MSTATUS_SPP | MSTATUS_FS | MSTATUS_MPRV | MSTATUS_SUM | MSTATUS_MPP | MSTATUS_MXR | MSTATUS_TVM | MSTATUS_TSR | MSTATUS_TW; if (!riscv_cpu_is_32bit(env)) { /* * RV32: MPV and GVA are not in mstatus. The current plan is to * add them to mstatush. For now, we just don't support it. */ mask |= MSTATUS_MPV | MSTATUS_GVA; } mstatus = (mstatus & ~mask) | (val & mask); dirty = ((mstatus & MSTATUS_FS) == MSTATUS_FS) | ((mstatus & MSTATUS_XS) == MSTATUS_XS); if (riscv_cpu_is_32bit(env)) { mstatus = set_field(mstatus, MSTATUS32_SD, dirty); } else { mstatus = set_field(mstatus, MSTATUS64_SD, dirty); } env->mstatus = mstatus; return RISCV_EXCP_NONE; } static RISCVException read_mstatush(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mstatus >> 32; return RISCV_EXCP_NONE; } static RISCVException write_mstatush(CPURISCVState *env, int csrno, target_ulong val) { uint64_t valh = (uint64_t)val << 32; uint64_t mask = MSTATUS_MPV | MSTATUS_GVA; if ((valh ^ env->mstatus) & (MSTATUS_MPV)) { tlb_flush(env_cpu(env)); } env->mstatus = (env->mstatus & ~mask) | (valh & mask); return RISCV_EXCP_NONE; } static RISCVException read_misa(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->misa; return RISCV_EXCP_NONE; } static RISCVException write_misa(CPURISCVState *env, int csrno, target_ulong val) { if (!riscv_feature(env, RISCV_FEATURE_MISA)) { /* drop write to misa */ return RISCV_EXCP_NONE; } /* 'I' or 'E' must be present */ if (!(val & (RVI | RVE))) { /* It is not, drop write to misa */ return RISCV_EXCP_NONE; } /* 'E' excludes all other extensions */ if (val & RVE) { /* when we support 'E' we can do "val = RVE;" however * for now we just drop writes if 'E' is present. */ return RISCV_EXCP_NONE; } /* Mask extensions that are not supported by this hart */ val &= env->misa_mask; /* Mask extensions that are not supported by QEMU */ val &= (RVI | RVE | RVM | RVA | RVF | RVD | RVC | RVS | RVU); /* 'D' depends on 'F', so clear 'D' if 'F' is not present */ if ((val & RVD) && !(val & RVF)) { val &= ~RVD; } /* Suppress 'C' if next instruction is not aligned * TODO: this should check next_pc */ if ((val & RVC) && (GETPC() & ~3) != 0) { val &= ~RVC; } /* misa.MXL writes are not supported by QEMU */ if (riscv_cpu_is_32bit(env)) { val = (env->misa & MISA32_MXL) | (val & ~MISA32_MXL); } else { val = (env->misa & MISA64_MXL) | (val & ~MISA64_MXL); } /* flush translation cache */ if (val != env->misa) { tb_flush(env_cpu(env)); } env->misa = val; return RISCV_EXCP_NONE; } static RISCVException read_medeleg(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->medeleg; return RISCV_EXCP_NONE; } static RISCVException write_medeleg(CPURISCVState *env, int csrno, target_ulong val) { env->medeleg = (env->medeleg & ~DELEGABLE_EXCPS) | (val & DELEGABLE_EXCPS); return RISCV_EXCP_NONE; } static RISCVException read_mideleg(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mideleg; return RISCV_EXCP_NONE; } static RISCVException write_mideleg(CPURISCVState *env, int csrno, target_ulong val) { env->mideleg = (env->mideleg & ~delegable_ints) | (val & delegable_ints); if (riscv_has_ext(env, RVH)) { env->mideleg |= VS_MODE_INTERRUPTS; } return RISCV_EXCP_NONE; } static RISCVException read_mie(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mie; return RISCV_EXCP_NONE; } static RISCVException write_mie(CPURISCVState *env, int csrno, target_ulong val) { env->mie = (env->mie & ~all_ints) | (val & all_ints); return RISCV_EXCP_NONE; } static RISCVException read_mtvec(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mtvec; return RISCV_EXCP_NONE; } static RISCVException write_mtvec(CPURISCVState *env, int csrno, target_ulong val) { /* bits [1:0] encode mode; 0 = direct, 1 = vectored, 2 >= reserved */ if ((val & 3) < 2) { env->mtvec = val; } else { qemu_log_mask(LOG_UNIMP, "CSR_MTVEC: reserved mode not supported\n"); } return RISCV_EXCP_NONE; } static RISCVException read_mcounteren(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mcounteren; return RISCV_EXCP_NONE; } static RISCVException write_mcounteren(CPURISCVState *env, int csrno, target_ulong val) { env->mcounteren = val; return RISCV_EXCP_NONE; } /* Machine Trap Handling */ static RISCVException read_mscratch(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mscratch; return RISCV_EXCP_NONE; } static RISCVException write_mscratch(CPURISCVState *env, int csrno, target_ulong val) { env->mscratch = val; return RISCV_EXCP_NONE; } static RISCVException read_mepc(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mepc; return RISCV_EXCP_NONE; } static RISCVException write_mepc(CPURISCVState *env, int csrno, target_ulong val) { env->mepc = val; return RISCV_EXCP_NONE; } static RISCVException read_mcause(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mcause; return RISCV_EXCP_NONE; } static RISCVException write_mcause(CPURISCVState *env, int csrno, target_ulong val) { env->mcause = val; return RISCV_EXCP_NONE; } static RISCVException read_mtval(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mtval; return RISCV_EXCP_NONE; } static RISCVException write_mtval(CPURISCVState *env, int csrno, target_ulong val) { env->mtval = val; return RISCV_EXCP_NONE; } static RISCVException rmw_mip(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { RISCVCPU *cpu = env_archcpu(env); /* Allow software control of delegable interrupts not claimed by hardware */ target_ulong mask = write_mask & delegable_ints & ~env->miclaim; uint32_t old_mip; if (mask) { old_mip = riscv_cpu_update_mip(cpu, mask, (new_value & mask)); } else { old_mip = env->mip; } if (ret_value) { *ret_value = old_mip; } return RISCV_EXCP_NONE; } /* Supervisor Trap Setup */ static RISCVException read_sstatus(CPURISCVState *env, int csrno, target_ulong *val) { target_ulong mask = (sstatus_v1_10_mask); if (riscv_cpu_is_32bit(env)) { mask |= SSTATUS32_SD; } else { mask |= SSTATUS64_SD; } *val = env->mstatus & mask; return RISCV_EXCP_NONE; } static RISCVException write_sstatus(CPURISCVState *env, int csrno, target_ulong val) { target_ulong mask = (sstatus_v1_10_mask); target_ulong newval = (env->mstatus & ~mask) | (val & mask); return write_mstatus(env, CSR_MSTATUS, newval); } static RISCVException read_vsie(CPURISCVState *env, int csrno, target_ulong *val) { /* Shift the VS bits to their S bit location in vsie */ *val = (env->mie & env->hideleg & VS_MODE_INTERRUPTS) >> 1; return RISCV_EXCP_NONE; } static RISCVException read_sie(CPURISCVState *env, int csrno, target_ulong *val) { if (riscv_cpu_virt_enabled(env)) { read_vsie(env, CSR_VSIE, val); } else { *val = env->mie & env->mideleg; } return RISCV_EXCP_NONE; } static RISCVException write_vsie(CPURISCVState *env, int csrno, target_ulong val) { /* Shift the S bits to their VS bit location in mie */ target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | ((val << 1) & env->hideleg & VS_MODE_INTERRUPTS); return write_mie(env, CSR_MIE, newval); } static int write_sie(CPURISCVState *env, int csrno, target_ulong val) { if (riscv_cpu_virt_enabled(env)) { write_vsie(env, CSR_VSIE, val); } else { target_ulong newval = (env->mie & ~S_MODE_INTERRUPTS) | (val & S_MODE_INTERRUPTS); write_mie(env, CSR_MIE, newval); } return RISCV_EXCP_NONE; } static RISCVException read_stvec(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->stvec; return RISCV_EXCP_NONE; } static RISCVException write_stvec(CPURISCVState *env, int csrno, target_ulong val) { /* bits [1:0] encode mode; 0 = direct, 1 = vectored, 2 >= reserved */ if ((val & 3) < 2) { env->stvec = val; } else { qemu_log_mask(LOG_UNIMP, "CSR_STVEC: reserved mode not supported\n"); } return RISCV_EXCP_NONE; } static RISCVException read_scounteren(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->scounteren; return RISCV_EXCP_NONE; } static RISCVException write_scounteren(CPURISCVState *env, int csrno, target_ulong val) { env->scounteren = val; return RISCV_EXCP_NONE; } /* Supervisor Trap Handling */ static RISCVException read_sscratch(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->sscratch; return RISCV_EXCP_NONE; } static RISCVException write_sscratch(CPURISCVState *env, int csrno, target_ulong val) { env->sscratch = val; return RISCV_EXCP_NONE; } static RISCVException read_sepc(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->sepc; return RISCV_EXCP_NONE; } static RISCVException write_sepc(CPURISCVState *env, int csrno, target_ulong val) { env->sepc = val; return RISCV_EXCP_NONE; } static RISCVException read_scause(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->scause; return RISCV_EXCP_NONE; } static RISCVException write_scause(CPURISCVState *env, int csrno, target_ulong val) { env->scause = val; return RISCV_EXCP_NONE; } static RISCVException read_stval(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->stval; return RISCV_EXCP_NONE; } static RISCVException write_stval(CPURISCVState *env, int csrno, target_ulong val) { env->stval = val; return RISCV_EXCP_NONE; } static RISCVException rmw_vsip(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { /* Shift the S bits to their VS bit location in mip */ int ret = rmw_mip(env, 0, ret_value, new_value << 1, (write_mask << 1) & vsip_writable_mask & env->hideleg); if (ret_value) { *ret_value &= VS_MODE_INTERRUPTS; /* Shift the VS bits to their S bit location in vsip */ *ret_value >>= 1; } return ret; } static RISCVException rmw_sip(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { int ret; if (riscv_cpu_virt_enabled(env)) { ret = rmw_vsip(env, CSR_VSIP, ret_value, new_value, write_mask); } else { ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value, write_mask & env->mideleg & sip_writable_mask); } if (ret_value) { *ret_value &= env->mideleg; } return ret; } /* Supervisor Protection and Translation */ static RISCVException read_satp(CPURISCVState *env, int csrno, target_ulong *val) { if (!riscv_feature(env, RISCV_FEATURE_MMU)) { *val = 0; return RISCV_EXCP_NONE; } if (env->priv == PRV_S && get_field(env->mstatus, MSTATUS_TVM)) { return RISCV_EXCP_ILLEGAL_INST; } else { *val = env->satp; } return RISCV_EXCP_NONE; } static RISCVException write_satp(CPURISCVState *env, int csrno, target_ulong val) { target_ulong vm, mask, asid; if (!riscv_feature(env, RISCV_FEATURE_MMU)) { return RISCV_EXCP_NONE; } if (riscv_cpu_is_32bit(env)) { vm = validate_vm(env, get_field(val, SATP32_MODE)); mask = (val ^ env->satp) & (SATP32_MODE | SATP32_ASID | SATP32_PPN); asid = (val ^ env->satp) & SATP32_ASID; } else { vm = validate_vm(env, get_field(val, SATP64_MODE)); mask = (val ^ env->satp) & (SATP64_MODE | SATP64_ASID | SATP64_PPN); asid = (val ^ env->satp) & SATP64_ASID; } if (vm && mask) { if (env->priv == PRV_S && get_field(env->mstatus, MSTATUS_TVM)) { return RISCV_EXCP_ILLEGAL_INST; } else { if (asid) { tlb_flush(env_cpu(env)); } env->satp = val; } } return RISCV_EXCP_NONE; } /* Hypervisor Extensions */ static RISCVException read_hstatus(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->hstatus; if (!riscv_cpu_is_32bit(env)) { /* We only support 64-bit VSXL */ *val = set_field(*val, HSTATUS_VSXL, 2); } /* We only support little endian */ *val = set_field(*val, HSTATUS_VSBE, 0); return RISCV_EXCP_NONE; } static RISCVException write_hstatus(CPURISCVState *env, int csrno, target_ulong val) { env->hstatus = val; if (!riscv_cpu_is_32bit(env) && get_field(val, HSTATUS_VSXL) != 2) { qemu_log_mask(LOG_UNIMP, "QEMU does not support mixed HSXLEN options."); } if (get_field(val, HSTATUS_VSBE) != 0) { qemu_log_mask(LOG_UNIMP, "QEMU does not support big endian guests."); } return RISCV_EXCP_NONE; } static RISCVException read_hedeleg(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->hedeleg; return RISCV_EXCP_NONE; } static RISCVException write_hedeleg(CPURISCVState *env, int csrno, target_ulong val) { env->hedeleg = val & vs_delegable_excps; return RISCV_EXCP_NONE; } static RISCVException read_hideleg(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->hideleg; return RISCV_EXCP_NONE; } static RISCVException write_hideleg(CPURISCVState *env, int csrno, target_ulong val) { env->hideleg = val & vs_delegable_ints; return RISCV_EXCP_NONE; } static RISCVException rmw_hvip(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { int ret = rmw_mip(env, 0, ret_value, new_value, write_mask & hvip_writable_mask); if (ret_value) { *ret_value &= hvip_writable_mask; } return ret; } static RISCVException rmw_hip(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { int ret = rmw_mip(env, 0, ret_value, new_value, write_mask & hip_writable_mask); if (ret_value) { *ret_value &= hip_writable_mask; } return ret; } static RISCVException read_hie(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mie & VS_MODE_INTERRUPTS; return RISCV_EXCP_NONE; } static RISCVException write_hie(CPURISCVState *env, int csrno, target_ulong val) { target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | (val & VS_MODE_INTERRUPTS); return write_mie(env, CSR_MIE, newval); } static RISCVException read_hcounteren(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->hcounteren; return RISCV_EXCP_NONE; } static RISCVException write_hcounteren(CPURISCVState *env, int csrno, target_ulong val) { env->hcounteren = val; return RISCV_EXCP_NONE; } static RISCVException write_hgeie(CPURISCVState *env, int csrno, target_ulong val) { if (val) { qemu_log_mask(LOG_UNIMP, "No support for a non-zero GEILEN."); } return RISCV_EXCP_NONE; } static RISCVException read_htval(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->htval; return RISCV_EXCP_NONE; } static RISCVException write_htval(CPURISCVState *env, int csrno, target_ulong val) { env->htval = val; return RISCV_EXCP_NONE; } static RISCVException read_htinst(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->htinst; return RISCV_EXCP_NONE; } static RISCVException write_htinst(CPURISCVState *env, int csrno, target_ulong val) { return RISCV_EXCP_NONE; } static RISCVException write_hgeip(CPURISCVState *env, int csrno, target_ulong val) { if (val) { qemu_log_mask(LOG_UNIMP, "No support for a non-zero GEILEN."); } return RISCV_EXCP_NONE; } static RISCVException read_hgatp(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->hgatp; return RISCV_EXCP_NONE; } static RISCVException write_hgatp(CPURISCVState *env, int csrno, target_ulong val) { env->hgatp = val; return RISCV_EXCP_NONE; } static RISCVException read_htimedelta(CPURISCVState *env, int csrno, target_ulong *val) { if (!env->rdtime_fn) { return RISCV_EXCP_ILLEGAL_INST; } *val = env->htimedelta; return RISCV_EXCP_NONE; } static RISCVException write_htimedelta(CPURISCVState *env, int csrno, target_ulong val) { if (!env->rdtime_fn) { return RISCV_EXCP_ILLEGAL_INST; } if (riscv_cpu_is_32bit(env)) { env->htimedelta = deposit64(env->htimedelta, 0, 32, (uint64_t)val); } else { env->htimedelta = val; } return RISCV_EXCP_NONE; } static RISCVException read_htimedeltah(CPURISCVState *env, int csrno, target_ulong *val) { if (!env->rdtime_fn) { return RISCV_EXCP_ILLEGAL_INST; } *val = env->htimedelta >> 32; return RISCV_EXCP_NONE; } static RISCVException write_htimedeltah(CPURISCVState *env, int csrno, target_ulong val) { if (!env->rdtime_fn) { return RISCV_EXCP_ILLEGAL_INST; } env->htimedelta = deposit64(env->htimedelta, 32, 32, (uint64_t)val); return RISCV_EXCP_NONE; } /* Virtual CSR Registers */ static RISCVException read_vsstatus(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vsstatus; return RISCV_EXCP_NONE; } static RISCVException write_vsstatus(CPURISCVState *env, int csrno, target_ulong val) { uint64_t mask = (target_ulong)-1; env->vsstatus = (env->vsstatus & ~mask) | (uint64_t)val; return RISCV_EXCP_NONE; } static int read_vstvec(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vstvec; return RISCV_EXCP_NONE; } static RISCVException write_vstvec(CPURISCVState *env, int csrno, target_ulong val) { env->vstvec = val; return RISCV_EXCP_NONE; } static RISCVException read_vsscratch(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vsscratch; return RISCV_EXCP_NONE; } static RISCVException write_vsscratch(CPURISCVState *env, int csrno, target_ulong val) { env->vsscratch = val; return RISCV_EXCP_NONE; } static RISCVException read_vsepc(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vsepc; return RISCV_EXCP_NONE; } static RISCVException write_vsepc(CPURISCVState *env, int csrno, target_ulong val) { env->vsepc = val; return RISCV_EXCP_NONE; } static RISCVException read_vscause(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vscause; return RISCV_EXCP_NONE; } static RISCVException write_vscause(CPURISCVState *env, int csrno, target_ulong val) { env->vscause = val; return RISCV_EXCP_NONE; } static RISCVException read_vstval(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vstval; return RISCV_EXCP_NONE; } static RISCVException write_vstval(CPURISCVState *env, int csrno, target_ulong val) { env->vstval = val; return RISCV_EXCP_NONE; } static RISCVException read_vsatp(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vsatp; return RISCV_EXCP_NONE; } static RISCVException write_vsatp(CPURISCVState *env, int csrno, target_ulong val) { env->vsatp = val; return RISCV_EXCP_NONE; } static RISCVException read_mtval2(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mtval2; return RISCV_EXCP_NONE; } static RISCVException write_mtval2(CPURISCVState *env, int csrno, target_ulong val) { env->mtval2 = val; return RISCV_EXCP_NONE; } static RISCVException read_mtinst(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mtinst; return RISCV_EXCP_NONE; } static RISCVException write_mtinst(CPURISCVState *env, int csrno, target_ulong val) { env->mtinst = val; return RISCV_EXCP_NONE; } /* Physical Memory Protection */ static RISCVException read_mseccfg(CPURISCVState *env, int csrno, target_ulong *val) { *val = mseccfg_csr_read(env); return RISCV_EXCP_NONE; } static RISCVException write_mseccfg(CPURISCVState *env, int csrno, target_ulong val) { mseccfg_csr_write(env, val); return RISCV_EXCP_NONE; } static RISCVException read_pmpcfg(CPURISCVState *env, int csrno, target_ulong *val) { *val = pmpcfg_csr_read(env, csrno - CSR_PMPCFG0); return RISCV_EXCP_NONE; } static RISCVException write_pmpcfg(CPURISCVState *env, int csrno, target_ulong val) { pmpcfg_csr_write(env, csrno - CSR_PMPCFG0, val); return RISCV_EXCP_NONE; } static RISCVException read_pmpaddr(CPURISCVState *env, int csrno, target_ulong *val) { *val = pmpaddr_csr_read(env, csrno - CSR_PMPADDR0); return RISCV_EXCP_NONE; } static RISCVException write_pmpaddr(CPURISCVState *env, int csrno, target_ulong val) { pmpaddr_csr_write(env, csrno - CSR_PMPADDR0, val); return RISCV_EXCP_NONE; } #endif /* * riscv_csrrw - read and/or update control and status register * * csrr <-> riscv_csrrw(env, csrno, ret_value, 0, 0); * csrrw <-> riscv_csrrw(env, csrno, ret_value, value, -1); * csrrs <-> riscv_csrrw(env, csrno, ret_value, -1, value); * csrrc <-> riscv_csrrw(env, csrno, ret_value, 0, value); */ RISCVException riscv_csrrw(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { RISCVException ret; target_ulong old_value; RISCVCPU *cpu = env_archcpu(env); int read_only = get_field(csrno, 0xC00) == 3; /* check privileges and return RISCV_EXCP_ILLEGAL_INST if check fails */ #if !defined(CONFIG_USER_ONLY) int effective_priv = env->priv; if (riscv_has_ext(env, RVH) && env->priv == PRV_S && !riscv_cpu_virt_enabled(env)) { /* * We are in S mode without virtualisation, therefore we are in HS Mode. * Add 1 to the effective privledge level to allow us to access the * Hypervisor CSRs. */ effective_priv++; } if (!env->debugger && (effective_priv < get_field(csrno, 0x300))) { return RISCV_EXCP_ILLEGAL_INST; } #endif if (write_mask && read_only) { return RISCV_EXCP_ILLEGAL_INST; } /* ensure the CSR extension is enabled. */ if (!cpu->cfg.ext_icsr) { return RISCV_EXCP_ILLEGAL_INST; } /* check predicate */ if (!csr_ops[csrno].predicate) { return RISCV_EXCP_ILLEGAL_INST; } ret = csr_ops[csrno].predicate(env, csrno); if (ret != RISCV_EXCP_NONE) { return ret; } /* execute combined read/write operation if it exists */ if (csr_ops[csrno].op) { return csr_ops[csrno].op(env, csrno, ret_value, new_value, write_mask); } /* if no accessor exists then return failure */ if (!csr_ops[csrno].read) { return RISCV_EXCP_ILLEGAL_INST; } /* read old value */ ret = csr_ops[csrno].read(env, csrno, &old_value); if (ret != RISCV_EXCP_NONE) { return ret; } /* write value if writable and write mask set, otherwise drop writes */ if (write_mask) { new_value = (old_value & ~write_mask) | (new_value & write_mask); if (csr_ops[csrno].write) { ret = csr_ops[csrno].write(env, csrno, new_value); if (ret != RISCV_EXCP_NONE) { return ret; } } } /* return old value */ if (ret_value) { *ret_value = old_value; } return RISCV_EXCP_NONE; } /* * Debugger support. If not in user mode, set env->debugger before the * riscv_csrrw call and clear it after the call. */ RISCVException riscv_csrrw_debug(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { RISCVException ret; #if !defined(CONFIG_USER_ONLY) env->debugger = true; #endif ret = riscv_csrrw(env, csrno, ret_value, new_value, write_mask); #if !defined(CONFIG_USER_ONLY) env->debugger = false; #endif return ret; } /* Control and Status Register function table */ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { /* User Floating-Point CSRs */ [CSR_FFLAGS] = { "fflags", fs, read_fflags, write_fflags }, [CSR_FRM] = { "frm", fs, read_frm, write_frm }, [CSR_FCSR] = { "fcsr", fs, read_fcsr, write_fcsr }, /* Vector CSRs */ [CSR_VSTART] = { "vstart", vs, read_vstart, write_vstart }, [CSR_VXSAT] = { "vxsat", vs, read_vxsat, write_vxsat }, [CSR_VXRM] = { "vxrm", vs, read_vxrm, write_vxrm }, [CSR_VL] = { "vl", vs, read_vl }, [CSR_VTYPE] = { "vtype", vs, read_vtype }, /* User Timers and Counters */ [CSR_CYCLE] = { "cycle", ctr, read_instret }, [CSR_INSTRET] = { "instret", ctr, read_instret }, [CSR_CYCLEH] = { "cycleh", ctr32, read_instreth }, [CSR_INSTRETH] = { "instreth", ctr32, read_instreth }, /* * In privileged mode, the monitor will have to emulate TIME CSRs only if * rdtime callback is not provided by machine/platform emulation. */ [CSR_TIME] = { "time", ctr, read_time }, [CSR_TIMEH] = { "timeh", ctr32, read_timeh }, #if !defined(CONFIG_USER_ONLY) /* Machine Timers and Counters */ [CSR_MCYCLE] = { "mcycle", any, read_instret }, [CSR_MINSTRET] = { "minstret", any, read_instret }, [CSR_MCYCLEH] = { "mcycleh", any32, read_instreth }, [CSR_MINSTRETH] = { "minstreth", any32, read_instreth }, /* Machine Information Registers */ [CSR_MVENDORID] = { "mvendorid", any, read_zero }, [CSR_MARCHID] = { "marchid", any, read_zero }, [CSR_MIMPID] = { "mimpid", any, read_zero }, [CSR_MHARTID] = { "mhartid", any, read_mhartid }, /* Machine Trap Setup */ [CSR_MSTATUS] = { "mstatus", any, read_mstatus, write_mstatus }, [CSR_MISA] = { "misa", any, read_misa, write_misa }, [CSR_MIDELEG] = { "mideleg", any, read_mideleg, write_mideleg }, [CSR_MEDELEG] = { "medeleg", any, read_medeleg, write_medeleg }, [CSR_MIE] = { "mie", any, read_mie, write_mie }, [CSR_MTVEC] = { "mtvec", any, read_mtvec, write_mtvec }, [CSR_MCOUNTEREN] = { "mcounteren", any, read_mcounteren, write_mcounteren }, [CSR_MSTATUSH] = { "mstatush", any32, read_mstatush, write_mstatush }, /* Machine Trap Handling */ [CSR_MSCRATCH] = { "mscratch", any, read_mscratch, write_mscratch }, [CSR_MEPC] = { "mepc", any, read_mepc, write_mepc }, [CSR_MCAUSE] = { "mcause", any, read_mcause, write_mcause }, [CSR_MTVAL] = { "mtval", any, read_mtval, write_mtval }, [CSR_MIP] = { "mip", any, NULL, NULL, rmw_mip }, /* Supervisor Trap Setup */ [CSR_SSTATUS] = { "sstatus", smode, read_sstatus, write_sstatus }, [CSR_SIE] = { "sie", smode, read_sie, write_sie }, [CSR_STVEC] = { "stvec", smode, read_stvec, write_stvec }, [CSR_SCOUNTEREN] = { "scounteren", smode, read_scounteren, write_scounteren }, /* Supervisor Trap Handling */ [CSR_SSCRATCH] = { "sscratch", smode, read_sscratch, write_sscratch }, [CSR_SEPC] = { "sepc", smode, read_sepc, write_sepc }, [CSR_SCAUSE] = { "scause", smode, read_scause, write_scause }, [CSR_STVAL] = { "stval", smode, read_stval, write_stval }, [CSR_SIP] = { "sip", smode, NULL, NULL, rmw_sip }, /* Supervisor Protection and Translation */ [CSR_SATP] = { "satp", smode, read_satp, write_satp }, [CSR_HSTATUS] = { "hstatus", hmode, read_hstatus, write_hstatus }, [CSR_HEDELEG] = { "hedeleg", hmode, read_hedeleg, write_hedeleg }, [CSR_HIDELEG] = { "hideleg", hmode, read_hideleg, write_hideleg }, [CSR_HVIP] = { "hvip", hmode, NULL, NULL, rmw_hvip }, [CSR_HIP] = { "hip", hmode, NULL, NULL, rmw_hip }, [CSR_HIE] = { "hie", hmode, read_hie, write_hie }, [CSR_HCOUNTEREN] = { "hcounteren", hmode, read_hcounteren, write_hcounteren }, [CSR_HGEIE] = { "hgeie", hmode, read_zero, write_hgeie }, [CSR_HTVAL] = { "htval", hmode, read_htval, write_htval }, [CSR_HTINST] = { "htinst", hmode, read_htinst, write_htinst }, [CSR_HGEIP] = { "hgeip", hmode, read_zero, write_hgeip }, [CSR_HGATP] = { "hgatp", hmode, read_hgatp, write_hgatp }, [CSR_HTIMEDELTA] = { "htimedelta", hmode, read_htimedelta, write_htimedelta }, [CSR_HTIMEDELTAH] = { "htimedeltah", hmode32, read_htimedeltah, write_htimedeltah }, [CSR_VSSTATUS] = { "vsstatus", hmode, read_vsstatus, write_vsstatus }, [CSR_VSIP] = { "vsip", hmode, NULL, NULL, rmw_vsip }, [CSR_VSIE] = { "vsie", hmode, read_vsie, write_vsie }, [CSR_VSTVEC] = { "vstvec", hmode, read_vstvec, write_vstvec }, [CSR_VSSCRATCH] = { "vsscratch", hmode, read_vsscratch, write_vsscratch }, [CSR_VSEPC] = { "vsepc", hmode, read_vsepc, write_vsepc }, [CSR_VSCAUSE] = { "vscause", hmode, read_vscause, write_vscause }, [CSR_VSTVAL] = { "vstval", hmode, read_vstval, write_vstval }, [CSR_VSATP] = { "vsatp", hmode, read_vsatp, write_vsatp }, [CSR_MTVAL2] = { "mtval2", hmode, read_mtval2, write_mtval2 }, [CSR_MTINST] = { "mtinst", hmode, read_mtinst, write_mtinst }, /* Physical Memory Protection */ [CSR_MSECCFG] = { "mseccfg", epmp, read_mseccfg, write_mseccfg }, [CSR_PMPCFG0] = { "pmpcfg0", pmp, read_pmpcfg, write_pmpcfg }, [CSR_PMPCFG1] = { "pmpcfg1", pmp, read_pmpcfg, write_pmpcfg }, [CSR_PMPCFG2] = { "pmpcfg2", pmp, read_pmpcfg, write_pmpcfg }, [CSR_PMPCFG3] = { "pmpcfg3", pmp, read_pmpcfg, write_pmpcfg }, [CSR_PMPADDR0] = { "pmpaddr0", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR1] = { "pmpaddr1", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR2] = { "pmpaddr2", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR3] = { "pmpaddr3", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR4] = { "pmpaddr4", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR5] = { "pmpaddr5", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR6] = { "pmpaddr6", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR7] = { "pmpaddr7", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR8] = { "pmpaddr8", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR9] = { "pmpaddr9", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR10] = { "pmpaddr10", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR11] = { "pmpaddr11", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR12] = { "pmpaddr12", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR13] = { "pmpaddr13", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR14] = { "pmpaddr14", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR15] = { "pmpaddr15", pmp, read_pmpaddr, write_pmpaddr }, /* Performance Counters */ [CSR_HPMCOUNTER3] = { "hpmcounter3", ctr, read_zero }, [CSR_HPMCOUNTER4] = { "hpmcounter4", ctr, read_zero }, [CSR_HPMCOUNTER5] = { "hpmcounter5", ctr, read_zero }, [CSR_HPMCOUNTER6] = { "hpmcounter6", ctr, read_zero }, [CSR_HPMCOUNTER7] = { "hpmcounter7", ctr, read_zero }, [CSR_HPMCOUNTER8] = { "hpmcounter8", ctr, read_zero }, [CSR_HPMCOUNTER9] = { "hpmcounter9", ctr, read_zero }, [CSR_HPMCOUNTER10] = { "hpmcounter10", ctr, read_zero }, [CSR_HPMCOUNTER11] = { "hpmcounter11", ctr, read_zero }, [CSR_HPMCOUNTER12] = { "hpmcounter12", ctr, read_zero }, [CSR_HPMCOUNTER13] = { "hpmcounter13", ctr, read_zero }, [CSR_HPMCOUNTER14] = { "hpmcounter14", ctr, read_zero }, [CSR_HPMCOUNTER15] = { "hpmcounter15", ctr, read_zero }, [CSR_HPMCOUNTER16] = { "hpmcounter16", ctr, read_zero }, [CSR_HPMCOUNTER17] = { "hpmcounter17", ctr, read_zero }, [CSR_HPMCOUNTER18] = { "hpmcounter18", ctr, read_zero }, [CSR_HPMCOUNTER19] = { "hpmcounter19", ctr, read_zero }, [CSR_HPMCOUNTER20] = { "hpmcounter20", ctr, read_zero }, [CSR_HPMCOUNTER21] = { "hpmcounter21", ctr, read_zero }, [CSR_HPMCOUNTER22] = { "hpmcounter22", ctr, read_zero }, [CSR_HPMCOUNTER23] = { "hpmcounter23", ctr, read_zero }, [CSR_HPMCOUNTER24] = { "hpmcounter24", ctr, read_zero }, [CSR_HPMCOUNTER25] = { "hpmcounter25", ctr, read_zero }, [CSR_HPMCOUNTER26] = { "hpmcounter26", ctr, read_zero }, [CSR_HPMCOUNTER27] = { "hpmcounter27", ctr, read_zero }, [CSR_HPMCOUNTER28] = { "hpmcounter28", ctr, read_zero }, [CSR_HPMCOUNTER29] = { "hpmcounter29", ctr, read_zero }, [CSR_HPMCOUNTER30] = { "hpmcounter30", ctr, read_zero }, [CSR_HPMCOUNTER31] = { "hpmcounter31", ctr, read_zero }, [CSR_MHPMCOUNTER3] = { "mhpmcounter3", any, read_zero }, [CSR_MHPMCOUNTER4] = { "mhpmcounter4", any, read_zero }, [CSR_MHPMCOUNTER5] = { "mhpmcounter5", any, read_zero }, [CSR_MHPMCOUNTER6] = { "mhpmcounter6", any, read_zero }, [CSR_MHPMCOUNTER7] = { "mhpmcounter7", any, read_zero }, [CSR_MHPMCOUNTER8] = { "mhpmcounter8", any, read_zero }, [CSR_MHPMCOUNTER9] = { "mhpmcounter9", any, read_zero }, [CSR_MHPMCOUNTER10] = { "mhpmcounter10", any, read_zero }, [CSR_MHPMCOUNTER11] = { "mhpmcounter11", any, read_zero }, [CSR_MHPMCOUNTER12] = { "mhpmcounter12", any, read_zero }, [CSR_MHPMCOUNTER13] = { "mhpmcounter13", any, read_zero }, [CSR_MHPMCOUNTER14] = { "mhpmcounter14", any, read_zero }, [CSR_MHPMCOUNTER15] = { "mhpmcounter15", any, read_zero }, [CSR_MHPMCOUNTER16] = { "mhpmcounter16", any, read_zero }, [CSR_MHPMCOUNTER17] = { "mhpmcounter17", any, read_zero }, [CSR_MHPMCOUNTER18] = { "mhpmcounter18", any, read_zero }, [CSR_MHPMCOUNTER19] = { "mhpmcounter19", any, read_zero }, [CSR_MHPMCOUNTER20] = { "mhpmcounter20", any, read_zero }, [CSR_MHPMCOUNTER21] = { "mhpmcounter21", any, read_zero }, [CSR_MHPMCOUNTER22] = { "mhpmcounter22", any, read_zero }, [CSR_MHPMCOUNTER23] = { "mhpmcounter23", any, read_zero }, [CSR_MHPMCOUNTER24] = { "mhpmcounter24", any, read_zero }, [CSR_MHPMCOUNTER25] = { "mhpmcounter25", any, read_zero }, [CSR_MHPMCOUNTER26] = { "mhpmcounter26", any, read_zero }, [CSR_MHPMCOUNTER27] = { "mhpmcounter27", any, read_zero }, [CSR_MHPMCOUNTER28] = { "mhpmcounter28", any, read_zero }, [CSR_MHPMCOUNTER29] = { "mhpmcounter29", any, read_zero }, [CSR_MHPMCOUNTER30] = { "mhpmcounter30", any, read_zero }, [CSR_MHPMCOUNTER31] = { "mhpmcounter31", any, read_zero }, [CSR_MHPMEVENT3] = { "mhpmevent3", any, read_zero }, [CSR_MHPMEVENT4] = { "mhpmevent4", any, read_zero }, [CSR_MHPMEVENT5] = { "mhpmevent5", any, read_zero }, [CSR_MHPMEVENT6] = { "mhpmevent6", any, read_zero }, [CSR_MHPMEVENT7] = { "mhpmevent7", any, read_zero }, [CSR_MHPMEVENT8] = { "mhpmevent8", any, read_zero }, [CSR_MHPMEVENT9] = { "mhpmevent9", any, read_zero }, [CSR_MHPMEVENT10] = { "mhpmevent10", any, read_zero }, [CSR_MHPMEVENT11] = { "mhpmevent11", any, read_zero }, [CSR_MHPMEVENT12] = { "mhpmevent12", any, read_zero }, [CSR_MHPMEVENT13] = { "mhpmevent13", any, read_zero }, [CSR_MHPMEVENT14] = { "mhpmevent14", any, read_zero }, [CSR_MHPMEVENT15] = { "mhpmevent15", any, read_zero }, [CSR_MHPMEVENT16] = { "mhpmevent16", any, read_zero }, [CSR_MHPMEVENT17] = { "mhpmevent17", any, read_zero }, [CSR_MHPMEVENT18] = { "mhpmevent18", any, read_zero }, [CSR_MHPMEVENT19] = { "mhpmevent19", any, read_zero }, [CSR_MHPMEVENT20] = { "mhpmevent20", any, read_zero }, [CSR_MHPMEVENT21] = { "mhpmevent21", any, read_zero }, [CSR_MHPMEVENT22] = { "mhpmevent22", any, read_zero }, [CSR_MHPMEVENT23] = { "mhpmevent23", any, read_zero }, [CSR_MHPMEVENT24] = { "mhpmevent24", any, read_zero }, [CSR_MHPMEVENT25] = { "mhpmevent25", any, read_zero }, [CSR_MHPMEVENT26] = { "mhpmevent26", any, read_zero }, [CSR_MHPMEVENT27] = { "mhpmevent27", any, read_zero }, [CSR_MHPMEVENT28] = { "mhpmevent28", any, read_zero }, [CSR_MHPMEVENT29] = { "mhpmevent29", any, read_zero }, [CSR_MHPMEVENT30] = { "mhpmevent30", any, read_zero }, [CSR_MHPMEVENT31] = { "mhpmevent31", any, read_zero }, [CSR_HPMCOUNTER3H] = { "hpmcounter3h", ctr32, read_zero }, [CSR_HPMCOUNTER4H] = { "hpmcounter4h", ctr32, read_zero }, [CSR_HPMCOUNTER5H] = { "hpmcounter5h", ctr32, read_zero }, [CSR_HPMCOUNTER6H] = { "hpmcounter6h", ctr32, read_zero }, [CSR_HPMCOUNTER7H] = { "hpmcounter7h", ctr32, read_zero }, [CSR_HPMCOUNTER8H] = { "hpmcounter8h", ctr32, read_zero }, [CSR_HPMCOUNTER9H] = { "hpmcounter9h", ctr32, read_zero }, [CSR_HPMCOUNTER10H] = { "hpmcounter10h", ctr32, read_zero }, [CSR_HPMCOUNTER11H] = { "hpmcounter11h", ctr32, read_zero }, [CSR_HPMCOUNTER12H] = { "hpmcounter12h", ctr32, read_zero }, [CSR_HPMCOUNTER13H] = { "hpmcounter13h", ctr32, read_zero }, [CSR_HPMCOUNTER14H] = { "hpmcounter14h", ctr32, read_zero }, [CSR_HPMCOUNTER15H] = { "hpmcounter15h", ctr32, read_zero }, [CSR_HPMCOUNTER16H] = { "hpmcounter16h", ctr32, read_zero }, [CSR_HPMCOUNTER17H] = { "hpmcounter17h", ctr32, read_zero }, [CSR_HPMCOUNTER18H] = { "hpmcounter18h", ctr32, read_zero }, [CSR_HPMCOUNTER19H] = { "hpmcounter19h", ctr32, read_zero }, [CSR_HPMCOUNTER20H] = { "hpmcounter20h", ctr32, read_zero }, [CSR_HPMCOUNTER21H] = { "hpmcounter21h", ctr32, read_zero }, [CSR_HPMCOUNTER22H] = { "hpmcounter22h", ctr32, read_zero }, [CSR_HPMCOUNTER23H] = { "hpmcounter23h", ctr32, read_zero }, [CSR_HPMCOUNTER24H] = { "hpmcounter24h", ctr32, read_zero }, [CSR_HPMCOUNTER25H] = { "hpmcounter25h", ctr32, read_zero }, [CSR_HPMCOUNTER26H] = { "hpmcounter26h", ctr32, read_zero }, [CSR_HPMCOUNTER27H] = { "hpmcounter27h", ctr32, read_zero }, [CSR_HPMCOUNTER28H] = { "hpmcounter28h", ctr32, read_zero }, [CSR_HPMCOUNTER29H] = { "hpmcounter29h", ctr32, read_zero }, [CSR_HPMCOUNTER30H] = { "hpmcounter30h", ctr32, read_zero }, [CSR_HPMCOUNTER31H] = { "hpmcounter31h", ctr32, read_zero }, [CSR_MHPMCOUNTER3H] = { "mhpmcounter3h", any32, read_zero }, [CSR_MHPMCOUNTER4H] = { "mhpmcounter4h", any32, read_zero }, [CSR_MHPMCOUNTER5H] = { "mhpmcounter5h", any32, read_zero }, [CSR_MHPMCOUNTER6H] = { "mhpmcounter6h", any32, read_zero }, [CSR_MHPMCOUNTER7H] = { "mhpmcounter7h", any32, read_zero }, [CSR_MHPMCOUNTER8H] = { "mhpmcounter8h", any32, read_zero }, [CSR_MHPMCOUNTER9H] = { "mhpmcounter9h", any32, read_zero }, [CSR_MHPMCOUNTER10H] = { "mhpmcounter10h", any32, read_zero }, [CSR_MHPMCOUNTER11H] = { "mhpmcounter11h", any32, read_zero }, [CSR_MHPMCOUNTER12H] = { "mhpmcounter12h", any32, read_zero }, [CSR_MHPMCOUNTER13H] = { "mhpmcounter13h", any32, read_zero }, [CSR_MHPMCOUNTER14H] = { "mhpmcounter14h", any32, read_zero }, [CSR_MHPMCOUNTER15H] = { "mhpmcounter15h", any32, read_zero }, [CSR_MHPMCOUNTER16H] = { "mhpmcounter16h", any32, read_zero }, [CSR_MHPMCOUNTER17H] = { "mhpmcounter17h", any32, read_zero }, [CSR_MHPMCOUNTER18H] = { "mhpmcounter18h", any32, read_zero }, [CSR_MHPMCOUNTER19H] = { "mhpmcounter19h", any32, read_zero }, [CSR_MHPMCOUNTER20H] = { "mhpmcounter20h", any32, read_zero }, [CSR_MHPMCOUNTER21H] = { "mhpmcounter21h", any32, read_zero }, [CSR_MHPMCOUNTER22H] = { "mhpmcounter22h", any32, read_zero }, [CSR_MHPMCOUNTER23H] = { "mhpmcounter23h", any32, read_zero }, [CSR_MHPMCOUNTER24H] = { "mhpmcounter24h", any32, read_zero }, [CSR_MHPMCOUNTER25H] = { "mhpmcounter25h", any32, read_zero }, [CSR_MHPMCOUNTER26H] = { "mhpmcounter26h", any32, read_zero }, [CSR_MHPMCOUNTER27H] = { "mhpmcounter27h", any32, read_zero }, [CSR_MHPMCOUNTER28H] = { "mhpmcounter28h", any32, read_zero }, [CSR_MHPMCOUNTER29H] = { "mhpmcounter29h", any32, read_zero }, [CSR_MHPMCOUNTER30H] = { "mhpmcounter30h", any32, read_zero }, [CSR_MHPMCOUNTER31H] = { "mhpmcounter31h", any32, read_zero }, #endif /* !CONFIG_USER_ONLY */ };