static void kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm, int level) { int vcpu_id; struct kvm_vcpu *vcpu; struct kvm_ioapic *ioapic = ioapic_irqchip(kvm); int dest_id = (e->msi.address_lo & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT; int vector = (e->msi.data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT; int dest_mode = test_bit(MSI_ADDR_DEST_MODE_SHIFT, (unsigned long *)&e->msi.address_lo); int trig_mode = test_bit(MSI_DATA_TRIGGER_SHIFT, (unsigned long *)&e->msi.data); int delivery_mode = test_bit(MSI_DATA_DELIVERY_MODE_SHIFT, (unsigned long *)&e->msi.data); u32 deliver_bitmask; BUG_ON(!ioapic); deliver_bitmask = kvm_ioapic_get_delivery_bitmask(ioapic, dest_id, dest_mode); /* IOAPIC delivery mode value is the same as MSI here */ switch (delivery_mode) { case IOAPIC_LOWEST_PRIORITY: vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector, deliver_bitmask); if (vcpu != NULL) kvm_apic_set_irq(vcpu, vector, trig_mode); else printk(KERN_INFO "kvm: null lowest priority vcpu!\n"); break; case IOAPIC_FIXED: for (vcpu_id = 0; deliver_bitmask != 0; vcpu_id++) { if (!(deliver_bitmask & (1 << vcpu_id))) continue; deliver_bitmask &= ~(1 << vcpu_id); vcpu = ioapic->kvm->vcpus[vcpu_id]; if (vcpu) kvm_apic_set_irq(vcpu, vector, trig_mode); } break; default: break; } }
static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq) { u8 dest = ioapic->redirtbl[irq].fields.dest_id; u8 dest_mode = ioapic->redirtbl[irq].fields.dest_mode; u8 delivery_mode = ioapic->redirtbl[irq].fields.delivery_mode; u8 vector = ioapic->redirtbl[irq].fields.vector; u8 trig_mode = ioapic->redirtbl[irq].fields.trig_mode; u32 deliver_bitmask; struct kvm_vcpu *vcpu; int vcpu_id; ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x " "vector=%x trig_mode=%x\n", dest, dest_mode, delivery_mode, vector, trig_mode); deliver_bitmask = ioapic_get_delivery_bitmask(ioapic, dest, dest_mode); if (!deliver_bitmask) { ioapic_debug("no target on destination\n"); return; } switch (delivery_mode) { case IOAPIC_LOWEST_PRIORITY: vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector, deliver_bitmask); #ifdef CONFIG_X86 if (irq == 0) vcpu = ioapic->kvm->vcpus[0]; #endif if (vcpu != NULL) ioapic_inj_irq(ioapic, vcpu, vector, trig_mode, delivery_mode); else ioapic_debug("null lowest prio vcpu: " "mask=%x vector=%x delivery_mode=%x\n", deliver_bitmask, vector, IOAPIC_LOWEST_PRIORITY); break; case IOAPIC_FIXED: #ifdef CONFIG_X86 if (irq == 0) deliver_bitmask = 1; #endif for (vcpu_id = 0; deliver_bitmask != 0; vcpu_id++) { if (!(deliver_bitmask & (1 << vcpu_id))) continue; deliver_bitmask &= ~(1 << vcpu_id); vcpu = ioapic->kvm->vcpus[vcpu_id]; if (vcpu) { ioapic_inj_irq(ioapic, vcpu, vector, trig_mode, delivery_mode); } } break; /* TODO: NMI */ default: printk(KERN_WARNING "Unsupported delivery mode %d\n", delivery_mode); break; } }