diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2022-08-22 14:23:56 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2022-09-14 11:19:40 +0100 |
| commit | 0b42f4fab9d3e994efa44e17cb76c15b269bcbda (patch) | |
| tree | ca700a981fda9bba6f7e671f2f71890e9f63eb53 /target/arm/cpu.h | |
| parent | a793bcd0272d9d25c942184ee18c7ed4dc75dc0d (diff) | |
target/arm: Implement FEAT_PMUv3p5 cycle counter disable bits
FEAT_PMUv3p5 introduces new bits which disable the cycle
counter from counting:
* MDCR_EL2.HCCD disables the counter when in EL2
* MDCR_EL3.SCCD disables the counter when Secure
Add the code to support these bits.
(Note that there is a third documented counter-disable
bit, MDCR_EL3.MCCD, which disables the counter when in
EL3. This is not present until FEAT_PMUv3p7, so is
out of scope for now.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822132358.3524971-9-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/arm/cpu.h')
| -rw-r--r-- | target/arm/cpu.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/target/arm/cpu.h b/target/arm/cpu.h index d86e51992a..41e74df104 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -1334,6 +1334,8 @@ FIELD(CPTR_EL3, TTA, 20, 1) FIELD(CPTR_EL3, TAM, 30, 1) FIELD(CPTR_EL3, TCPAC, 31, 1) +#define MDCR_SCCD (1U << 23) /* MDCR_EL3 */ +#define MDCR_HCCD (1U << 23) /* MDCR_EL2 */ #define MDCR_EPMAD (1U << 21) #define MDCR_EDAD (1U << 20) #define MDCR_SPME (1U << 17) /* MDCR_EL3 */ @@ -3726,6 +3728,13 @@ static inline bool isar_feature_aa32_pmuv3p4(const ARMISARegisters *id) FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) != 0xf; } +static inline bool isar_feature_aa32_pmuv3p5(const ARMISARegisters *id) +{ + /* 0xf means "non-standard IMPDEF PMU" */ + return FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) >= 6 && + FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) != 0xf; +} + static inline bool isar_feature_aa32_hpd(const ARMISARegisters *id) { return FIELD_EX32(id->id_mmfr4, ID_MMFR4, HPDS) != 0; @@ -4050,6 +4059,12 @@ static inline bool isar_feature_aa64_pmuv3p4(const ARMISARegisters *id) FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) != 0xf; } +static inline bool isar_feature_aa64_pmuv3p5(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) >= 6 && + FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) != 0xf; +} + static inline bool isar_feature_aa64_rcpc_8_3(const ARMISARegisters *id) { return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, LRCPC) != 0; @@ -4223,6 +4238,11 @@ static inline bool isar_feature_any_pmuv3p4(const ARMISARegisters *id) return isar_feature_aa64_pmuv3p4(id) || isar_feature_aa32_pmuv3p4(id); } +static inline bool isar_feature_any_pmuv3p5(const ARMISARegisters *id) +{ + return isar_feature_aa64_pmuv3p5(id) || isar_feature_aa32_pmuv3p5(id); +} + static inline bool isar_feature_any_ccidx(const ARMISARegisters *id) { return isar_feature_aa64_ccidx(id) || isar_feature_aa32_ccidx(id); |