diff --git a/hw/intc/openpic_kvm.c b/hw/intc/openpic_kvm.c index 585ab4ff20..e3bce043a3 100644 --- a/hw/intc/openpic_kvm.c +++ b/hw/intc/openpic_kvm.c @@ -31,6 +31,8 @@ #include "sysemu/kvm.h" #include "qemu/log.h" +#define GCR_RESET 0x80000000 + #define KVM_OPENPIC(obj) \ OBJECT_CHECK(KVMOpenPICState, (obj), TYPE_KVM_OPENPIC) @@ -50,11 +52,6 @@ static void kvm_openpic_set_irq(void *opaque, int n_IRQ, int level) kvm_set_irq(kvm_state, n_IRQ, level); } -static void kvm_openpic_reset(DeviceState *d) -{ - qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); -} - static void kvm_openpic_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { @@ -74,6 +71,14 @@ static void kvm_openpic_write(void *opaque, hwaddr addr, uint64_t val, } } +static void kvm_openpic_reset(DeviceState *d) +{ + KVMOpenPICState *opp = KVM_OPENPIC(d); + + /* Trigger the GCR.RESET bit to reset the PIC */ + kvm_openpic_write(opp, 0x1020, GCR_RESET, sizeof(uint32_t)); +} + static uint64_t kvm_openpic_read(void *opaque, hwaddr addr, unsigned size) { KVMOpenPICState *opp = opaque;