diff options
| -rw-r--r-- | arch/powerpc/include/asm/dbell.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kvm/e500_emulate.c | 68 |
3 files changed, 72 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h index d7365b01f0c..154c067761b 100644 --- a/arch/powerpc/include/asm/dbell.h +++ b/arch/powerpc/include/asm/dbell.h @@ -19,7 +19,9 @@ #define PPC_DBELL_MSG_BRDCAST (0x04000000) #define PPC_DBELL_TYPE(x) (((x) & 0xf) << (63-36)) +#define PPC_DBELL_TYPE_MASK PPC_DBELL_TYPE(0xf) #define PPC_DBELL_LPID(x) ((x) << (63 - 49)) +#define PPC_DBELL_PIR_MASK 0x3fff enum ppc_dbell { PPC_DBELL = 0, /* doorbell */ PPC_DBELL_CRIT = 1, /* critical doorbell */ diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 0b77be187cf..85bd5b8f3fd 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -326,6 +326,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu, int_class = INT_CLASS_NONCRIT; break; case BOOKE_IRQPRIO_CRITICAL: + case BOOKE_IRQPRIO_DBELL_CRIT: allowed = vcpu->arch.shared->msr & MSR_CE; allowed = allowed && !crit; msr_mask = MSR_GS | MSR_ME; @@ -342,6 +343,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu, keep_irq = true; /* fall through */ case BOOKE_IRQPRIO_EXTERNAL: + case BOOKE_IRQPRIO_DBELL: allowed = vcpu->arch.shared->msr & MSR_EE; allowed = allowed && !crit; msr_mask = MSR_GS | MSR_CE | MSR_ME | MSR_DE; diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index 98b6c1cd6b8..99155f847a6 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -14,16 +14,74 @@ #include <asm/kvm_ppc.h> #include <asm/disassemble.h> +#include <asm/dbell.h> #include "booke.h" #include "e500.h" +#define XOP_MSGSND 206 +#define XOP_MSGCLR 238 #define XOP_TLBIVAX 786 #define XOP_TLBSX 914 #define XOP_TLBRE 946 #define XOP_TLBWE 978 #define XOP_TLBILX 18 +#ifdef CONFIG_KVM_E500MC +static int dbell2prio(ulong param) +{ + int msg = param & PPC_DBELL_TYPE_MASK; + int prio = -1; + + switch (msg) { + case PPC_DBELL_TYPE(PPC_DBELL): + prio = BOOKE_IRQPRIO_DBELL; + break; + case PPC_DBELL_TYPE(PPC_DBELL_CRIT): + prio = BOOKE_IRQPRIO_DBELL_CRIT; + break; + default: + break; + } + + return prio; +} + +static int kvmppc_e500_emul_msgclr(struct kvm_vcpu *vcpu, int rb) +{ + ulong param = vcpu->arch.gpr[rb]; + int prio = dbell2prio(param); + + if (prio < 0) + return EMULATE_FAIL; + + clear_bit(prio, &vcpu->arch.pending_exceptions); + return EMULATE_DONE; +} + +static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb) +{ + ulong param = vcpu->arch.gpr[rb]; + int prio = dbell2prio(rb); + int pir = param & PPC_DBELL_PIR_MASK; + int i; + struct kvm_vcpu *cvcpu; + + if (prio < 0) + return EMULATE_FAIL; + + kvm_for_each_vcpu(i, cvcpu, vcpu->kvm) { + int cpir = cvcpu->arch.shared->pir; + if ((param & PPC_DBELL_MSG_BRDCAST) || (cpir == pir)) { + set_bit(prio, &cvcpu->arch.pending_exceptions); + kvm_vcpu_kick(cvcpu); + } + } + + return EMULATE_DONE; +} +#endif + int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int inst, int *advance) { @@ -36,6 +94,16 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, case 31: switch (get_xop(inst)) { +#ifdef CONFIG_KVM_E500MC + case XOP_MSGSND: + emulated = kvmppc_e500_emul_msgsnd(vcpu, get_rb(inst)); + break; + + case XOP_MSGCLR: + emulated = kvmppc_e500_emul_msgclr(vcpu, get_rb(inst)); + break; +#endif + case XOP_TLBRE: emulated = kvmppc_e500_emul_tlbre(vcpu); break; |