static void kvm_openpic_init(Object *obj)
{
KVMOpenPICState *opp = KVM_OPENPIC(obj);
memory_region_init_io(&opp->mem, &kvm_openpic_mem_ops, opp,
"kvm-openpic", 0x40000);
}
int kvm_openpic_connect_vcpu(DeviceState *d, CPUState *cs)
{
KVMOpenPICState *opp = KVM_OPENPIC(d);
return kvm_vcpu_enable_cap(cs, KVM_CAP_IRQ_MPIC, 0, opp->fd,
kvm_arch_vcpu_id(cs));
}
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 void kvm_openpic_realize(DeviceState *dev, Error **errp)
{
SysBusDevice *d = SYS_BUS_DEVICE(dev);
KVMOpenPICState *opp = KVM_OPENPIC(dev);
KVMState *s = kvm_state;
int kvm_openpic_model;
struct kvm_create_device cd = {0};
int ret, i;
if (!kvm_check_extension(s, KVM_CAP_DEVICE_CTRL)) {
error_setg(errp, "Kernel is lacking Device Control API");
return;
}
switch (opp->model) {
case OPENPIC_MODEL_FSL_MPIC_20:
kvm_openpic_model = KVM_DEV_TYPE_FSL_MPIC_20;
break;
case OPENPIC_MODEL_FSL_MPIC_42:
kvm_openpic_model = KVM_DEV_TYPE_FSL_MPIC_42;
break;
default:
error_setg(errp, "Unsupported OpenPIC model %" PRIu32, opp->model);
return;
}
cd.type = kvm_openpic_model;
ret = kvm_vm_ioctl(s, KVM_CREATE_DEVICE, &cd);
if (ret < 0) {
error_setg(errp, "Can't create device %d: %s",
cd.type, strerror(errno));
return;
}
opp->fd = cd.fd;
sysbus_init_mmio(d, &opp->mem);
qdev_init_gpio_in(dev, kvm_openpic_set_irq, OPENPIC_MAX_IRQ);
opp->mem_listener.region_add = kvm_openpic_region_add;
opp->mem_listener.region_del = kvm_openpic_region_del;
memory_listener_register(&opp->mem_listener, &address_space_memory);
/* indicate pic capabilities */
msi_nonbroken = true;
kvm_kernel_irqchip = true;
kvm_async_interrupts_allowed = true;
/* set up irq routing */
kvm_init_irq_routing(kvm_state);
for (i = 0; i < 256; ++i) {
kvm_irqchip_add_irq_route(kvm_state, i, 0, i);
}
kvm_msi_via_irqfd_allowed = true;
kvm_gsi_routing_allowed = true;
kvm_irqchip_commit_routes(s);
}
int kvm_openpic_connect_vcpu(DeviceState *d, CPUState *cs)
{
KVMOpenPICState *opp = KVM_OPENPIC(d);
struct kvm_enable_cap encap = {};
encap.cap = KVM_CAP_IRQ_MPIC;
encap.args[0] = opp->fd;
encap.args[1] = cs->cpu_index;
return kvm_vcpu_ioctl(cs, KVM_ENABLE_CAP, &encap);
}