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target/arm: Implement ID_AA64MMFR3_EL1

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Newer versions of the Arm ARM (e.g.  rev K.a) now define fields for
ID_AA64MMFR3_EL1.  Implement this register, so that we can set the
fields if we need to.  There's no behaviour change here since we
don't currently set the register value to non-zero.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240418152004.2106516-5-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2024-04-18 16:20:03 +01:00
parent 74360f3544
commit f7ddd7b6a1
4 changed files with 25 additions and 2 deletions
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17
target/arm/cpu.h
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@ -1011,6 +1011,7 @@ struct ArchCPU {
uint64_t id_aa64mmfr0;
uint64_t id_aa64mmfr1;
uint64_t id_aa64mmfr2;
uint64_t id_aa64mmfr3;
uint64_t id_aa64dfr0;
uint64_t id_aa64dfr1;
uint64_t id_aa64zfr0;
@ -2206,6 +2207,22 @@ FIELD(ID_AA64MMFR2, BBM, 52, 4)
FIELD(ID_AA64MMFR2, EVT, 56, 4)
FIELD(ID_AA64MMFR2, E0PD, 60, 4)
FIELD(ID_AA64MMFR3, TCRX, 0, 4)
FIELD(ID_AA64MMFR3, SCTLRX, 4, 4)
FIELD(ID_AA64MMFR3, S1PIE, 8, 4)
FIELD(ID_AA64MMFR3, S2PIE, 12, 4)
FIELD(ID_AA64MMFR3, S1POE, 16, 4)
FIELD(ID_AA64MMFR3, S2POE, 20, 4)
FIELD(ID_AA64MMFR3, AIE, 24, 4)
FIELD(ID_AA64MMFR3, MEC, 28, 4)
FIELD(ID_AA64MMFR3, D128, 32, 4)
FIELD(ID_AA64MMFR3, D128_2, 36, 4)
FIELD(ID_AA64MMFR3, SNERR, 40, 4)
FIELD(ID_AA64MMFR3, ANERR, 44, 4)
FIELD(ID_AA64MMFR3, SDERR, 52, 4)
FIELD(ID_AA64MMFR3, ADERR, 56, 4)
FIELD(ID_AA64MMFR3, SPEC_FPACC, 60, 4)
FIELD(ID_AA64DFR0, DEBUGVER, 0, 4)
FIELD(ID_AA64DFR0, TRACEVER, 4, 4)
FIELD(ID_AA64DFR0, PMUVER, 8, 4)

6
target/arm/helper.c
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@ -9004,11 +9004,11 @@ void register_cp_regs_for_features(ARMCPU *cpu)
.access = PL1_R, .type = ARM_CP_CONST,
.accessfn = access_aa64_tid3,
.resetvalue = cpu->isar.id_aa64mmfr2 },
{ .name = "ID_AA64MMFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
{ .name = "ID_AA64MMFR3_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 3,
.access = PL1_R, .type = ARM_CP_CONST,
.accessfn = access_aa64_tid3,
.resetvalue = 0 },
.resetvalue = cpu->isar.id_aa64mmfr3 },
{ .name = "ID_AA64MMFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 4,
.access = PL1_R, .type = ARM_CP_CONST,
@ -9165,6 +9165,8 @@ void register_cp_regs_for_features(ARMCPU *cpu)
.exported_bits = R_ID_AA64MMFR1_AFP_MASK },
{ .name = "ID_AA64MMFR2_EL1",
.exported_bits = R_ID_AA64MMFR2_AT_MASK },
{ .name = "ID_AA64MMFR3_EL1",
.exported_bits = 0 },
{ .name = "ID_AA64MMFR*_EL1_RESERVED",
.is_glob = true },
{ .name = "ID_AA64DFR0_EL1",

2
target/arm/hvf/hvf.c
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@ -497,6 +497,7 @@ static struct hvf_sreg_match hvf_sreg_match[] = {
#endif
{ HV_SYS_REG_ID_AA64MMFR1_EL1, HVF_SYSREG(0, 7, 3, 0, 1) },
{ HV_SYS_REG_ID_AA64MMFR2_EL1, HVF_SYSREG(0, 7, 3, 0, 2) },
/* Add ID_AA64MMFR3_EL1 here when HVF supports it */
{ HV_SYS_REG_MDSCR_EL1, HVF_SYSREG(0, 2, 2, 0, 2) },
{ HV_SYS_REG_SCTLR_EL1, HVF_SYSREG(1, 0, 3, 0, 0) },
@ -855,6 +856,7 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
{ HV_SYS_REG_ID_AA64MMFR0_EL1, &host_isar.id_aa64mmfr0 },
{ HV_SYS_REG_ID_AA64MMFR1_EL1, &host_isar.id_aa64mmfr1 },
{ HV_SYS_REG_ID_AA64MMFR2_EL1, &host_isar.id_aa64mmfr2 },
/* Add ID_AA64MMFR3_EL1 here when HVF supports it */
};
hv_vcpu_t fd;
hv_return_t r = HV_SUCCESS;

2
target/arm/kvm.c
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@ -331,6 +331,8 @@ static bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
ARM64_SYS_REG(3, 0, 0, 7, 1));
err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64mmfr2,
ARM64_SYS_REG(3, 0, 0, 7, 2));
err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64mmfr3,
ARM64_SYS_REG(3, 0, 0, 7, 3));
/*
* Note that if AArch32 support is not present in the host,