diff options
Diffstat (limited to '')
| -rw-r--r-- | target/riscv/cpu.c | 3 | ||||
| -rw-r--r-- | target/riscv/cpu.h | 2 | ||||
| -rw-r--r-- | target/riscv/csr.c | 94 |
3 files changed, 63 insertions, 36 deletions
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 1b57b3c439..d12c6dc630 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -851,7 +851,6 @@ static void riscv_cpu_init(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); - cpu->cfg.ext_pmu = true; cpu->cfg.ext_ifencei = true; cpu->cfg.ext_icsr = true; cpu->cfg.mmu = true; @@ -879,7 +878,7 @@ static Property riscv_cpu_extensions[] = { DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true), DEFINE_PROP_BOOL("v", RISCVCPU, cfg.ext_v, false), DEFINE_PROP_BOOL("h", RISCVCPU, cfg.ext_h, true), - DEFINE_PROP_BOOL("pmu", RISCVCPU, cfg.ext_pmu, true), + DEFINE_PROP_UINT8("pmu-num", RISCVCPU, cfg.pmu_num, 16), DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true), DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true), DEFINE_PROP_BOOL("Zfh", RISCVCPU, cfg.ext_zfh, false), diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 252c30a55d..ffee54ea5c 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -397,7 +397,6 @@ struct RISCVCPUConfig { bool ext_zksed; bool ext_zksh; bool ext_zkt; - bool ext_pmu; bool ext_ifencei; bool ext_icsr; bool ext_svinval; @@ -421,6 +420,7 @@ struct RISCVCPUConfig { /* Vendor-specific custom extensions */ bool ext_XVentanaCondOps; + uint8_t pmu_num; char *priv_spec; char *user_spec; char *bext_spec; diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 0ca05c7788..b4a8e15f49 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -73,9 +73,17 @@ static RISCVException ctr(CPURISCVState *env, int csrno) CPUState *cs = env_cpu(env); RISCVCPU *cpu = RISCV_CPU(cs); int ctr_index; + int base_csrno = CSR_HPMCOUNTER3; + bool rv32 = riscv_cpu_mxl(env) == MXL_RV32 ? true : false; - if (!cpu->cfg.ext_pmu) { - /* The PMU extension is not enabled */ + if (rv32 && csrno >= CSR_CYCLEH) { + /* Offset for RV32 hpmcounternh counters */ + base_csrno += 0x80; + } + ctr_index = csrno - base_csrno; + + if (!cpu->cfg.pmu_num || ctr_index >= (cpu->cfg.pmu_num)) { + /* No counter is enabled in PMU or the counter is out of range */ return RISCV_EXCP_ILLEGAL_INST; } @@ -103,7 +111,7 @@ static RISCVException ctr(CPURISCVState *env, int csrno) } break; } - if (riscv_cpu_mxl(env) == MXL_RV32) { + if (rv32) { switch (csrno) { case CSR_CYCLEH: if (!get_field(env->mcounteren, COUNTEREN_CY)) { @@ -158,7 +166,7 @@ static RISCVException ctr(CPURISCVState *env, int csrno) } break; } - if (riscv_cpu_mxl(env) == MXL_RV32) { + if (rv32) { switch (csrno) { case CSR_CYCLEH: if (!get_field(env->hcounteren, COUNTEREN_CY) && @@ -202,6 +210,26 @@ static RISCVException ctr32(CPURISCVState *env, int csrno) } #if !defined(CONFIG_USER_ONLY) +static RISCVException mctr(CPURISCVState *env, int csrno) +{ + CPUState *cs = env_cpu(env); + RISCVCPU *cpu = RISCV_CPU(cs); + int ctr_index; + int base_csrno = CSR_MHPMCOUNTER3; + + if ((riscv_cpu_mxl(env) == MXL_RV32) && csrno >= CSR_MCYCLEH) { + /* Offset for RV32 mhpmcounternh counters */ + base_csrno += 0x80; + } + ctr_index = csrno - base_csrno; + if (!cpu->cfg.pmu_num || ctr_index >= cpu->cfg.pmu_num) { + /* The PMU is not enabled or counter is out of range*/ + return RISCV_EXCP_ILLEGAL_INST; + } + + return RISCV_EXCP_NONE; +} + static RISCVException any(CPURISCVState *env, int csrno) { return RISCV_EXCP_NONE; @@ -3687,35 +3715,35 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [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_MHPMCOUNTER3] = { "mhpmcounter3", mctr, read_zero }, + [CSR_MHPMCOUNTER4] = { "mhpmcounter4", mctr, read_zero }, + [CSR_MHPMCOUNTER5] = { "mhpmcounter5", mctr, read_zero }, + [CSR_MHPMCOUNTER6] = { "mhpmcounter6", mctr, read_zero }, + [CSR_MHPMCOUNTER7] = { "mhpmcounter7", mctr, read_zero }, + [CSR_MHPMCOUNTER8] = { "mhpmcounter8", mctr, read_zero }, + [CSR_MHPMCOUNTER9] = { "mhpmcounter9", mctr, read_zero }, + [CSR_MHPMCOUNTER10] = { "mhpmcounter10", mctr, read_zero }, + [CSR_MHPMCOUNTER11] = { "mhpmcounter11", mctr, read_zero }, + [CSR_MHPMCOUNTER12] = { "mhpmcounter12", mctr, read_zero }, + [CSR_MHPMCOUNTER13] = { "mhpmcounter13", mctr, read_zero }, + [CSR_MHPMCOUNTER14] = { "mhpmcounter14", mctr, read_zero }, + [CSR_MHPMCOUNTER15] = { "mhpmcounter15", mctr, read_zero }, + [CSR_MHPMCOUNTER16] = { "mhpmcounter16", mctr, read_zero }, + [CSR_MHPMCOUNTER17] = { "mhpmcounter17", mctr, read_zero }, + [CSR_MHPMCOUNTER18] = { "mhpmcounter18", mctr, read_zero }, + [CSR_MHPMCOUNTER19] = { "mhpmcounter19", mctr, read_zero }, + [CSR_MHPMCOUNTER20] = { "mhpmcounter20", mctr, read_zero }, + [CSR_MHPMCOUNTER21] = { "mhpmcounter21", mctr, read_zero }, + [CSR_MHPMCOUNTER22] = { "mhpmcounter22", mctr, read_zero }, + [CSR_MHPMCOUNTER23] = { "mhpmcounter23", mctr, read_zero }, + [CSR_MHPMCOUNTER24] = { "mhpmcounter24", mctr, read_zero }, + [CSR_MHPMCOUNTER25] = { "mhpmcounter25", mctr, read_zero }, + [CSR_MHPMCOUNTER26] = { "mhpmcounter26", mctr, read_zero }, + [CSR_MHPMCOUNTER27] = { "mhpmcounter27", mctr, read_zero }, + [CSR_MHPMCOUNTER28] = { "mhpmcounter28", mctr, read_zero }, + [CSR_MHPMCOUNTER29] = { "mhpmcounter29", mctr, read_zero }, + [CSR_MHPMCOUNTER30] = { "mhpmcounter30", mctr, read_zero }, + [CSR_MHPMCOUNTER31] = { "mhpmcounter31", mctr, read_zero }, [CSR_MHPMEVENT3] = { "mhpmevent3", any, read_zero }, [CSR_MHPMEVENT4] = { "mhpmevent4", any, read_zero }, |