static void kvm_piix3_setup_irq_routing(bool pci_enabled)
{
#ifdef CONFIG_KVM
KVMState *s = kvm_state;
int ret, i;
if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
for (i = 0; i < 8; ++i) {
if (i == 2) {
continue;
}
kvm_irqchip_add_route(s, i, KVM_IRQCHIP_PIC_MASTER, i);
}
for (i = 8; i < 16; ++i) {
kvm_irqchip_add_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);
}
if (pci_enabled) {
for (i = 0; i < 24; ++i) {
if (i == 0) {
kvm_irqchip_add_route(s, i, KVM_IRQCHIP_IOAPIC, 2);
} else if (i != 2) {
kvm_irqchip_add_route(s, i, KVM_IRQCHIP_IOAPIC, i);
}
}
}
ret = kvm_irqchip_commit_routes(s);
if (ret < 0) {
hw_error("KVM IRQ routing setup failed");
}
}
#endif /* CONFIG_KVM */
}
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);
}
static int ivshmem_vector_unmask(PCIDevice *dev, unsigned vector,
MSIMessage msg)
{
IVShmemState *s = IVSHMEM_COMMON(dev);
EventNotifier *n = &s->peers[s->vm_id].eventfds[vector];
MSIVector *v = &s->msi_vectors[vector];
int ret;
IVSHMEM_DPRINTF("vector unmask %p %d\n", dev, vector);
ret = kvm_irqchip_update_msi_route(kvm_state, v->virq, msg, dev);
if (ret < 0) {
return ret;
}
kvm_irqchip_commit_routes(kvm_state);
return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, v->virq);
}
static int kvm_s390_register_io_adapter(S390FLICState *fs, uint32_t id,
uint8_t isc, bool swap,
bool is_maskable)
{
struct kvm_s390_io_adapter adapter = {
.id = id,
.isc = isc,
.maskable = is_maskable,
.swap = swap,
};
KVMS390FLICState *flic = KVM_S390_FLIC(fs);
int r;
struct kvm_device_attr attr = {
.group = KVM_DEV_FLIC_ADAPTER_REGISTER,
.addr = (uint64_t)&adapter,
};
if (!kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING)) {
/* nothing to do */
return 0;
}
r = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr);
return r ? -errno : 0;
}
static int kvm_s390_io_adapter_map(S390FLICState *fs, uint32_t id,
uint64_t map_addr, bool do_map)
{
struct kvm_s390_io_adapter_req req = {
.id = id,
.type = do_map ? KVM_S390_IO_ADAPTER_MAP : KVM_S390_IO_ADAPTER_UNMAP,
.addr = map_addr,
};
struct kvm_device_attr attr = {
.group = KVM_DEV_FLIC_ADAPTER_MODIFY,
.addr = (uint64_t)&req,
};
KVMS390FLICState *flic = KVM_S390_FLIC(fs);
int r;
if (!kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING)) {
/* nothing to do */
return 0;
}
r = ioctl(flic->fd, KVM_SET_DEVICE_ATTR, &attr);
return r ? -errno : 0;
}
static int kvm_s390_add_adapter_routes(S390FLICState *fs,
AdapterRoutes *routes)
{
int ret, i;
uint64_t ind_offset = routes->adapter.ind_offset;
for (i = 0; i < routes->num_routes; i++) {
ret = kvm_irqchip_add_adapter_route(kvm_state, &routes->adapter);
if (ret < 0) {
goto out_undo;
}
routes->gsi[i] = ret;
routes->adapter.ind_offset++;
}
kvm_irqchip_commit_routes(kvm_state);
/* Restore passed-in structure to original state. */
routes->adapter.ind_offset = ind_offset;
return 0;
out_undo:
while (--i >= 0) {
kvm_irqchip_release_virq(kvm_state, routes->gsi[i]);
routes->gsi[i] = -1;
}
routes->adapter.ind_offset = ind_offset;
return ret;
}
static void kvm_s390_release_adapter_routes(S390FLICState *fs,
AdapterRoutes *routes)
{
int i;
for (i = 0; i < routes->num_routes; i++) {
if (routes->gsi[i] >= 0) {
kvm_irqchip_release_virq(kvm_state, routes->gsi[i]);
routes->gsi[i] = -1;
}
}
}
/**
* kvm_flic_save - Save pending floating interrupts
* @f: QEMUFile containing migration state
* @opaque: pointer to flic device state
*
* Note: Pass buf and len to kernel. Start with one page and
* increase until buffer is sufficient or maxium size is
* reached
*/
static void kvm_flic_save(QEMUFile *f, void *opaque)
{
KVMS390FLICState *flic = opaque;
int len = FLIC_SAVE_INITIAL_SIZE;
void *buf;
int count;
flic_disable_wait_pfault((struct KVMS390FLICState *) opaque);
buf = g_try_malloc0(len);
if (!buf) {
/* Storing FLIC_FAILED into the count field here will cause the
* target system to fail when attempting to load irqs from the
* migration state */
error_report("flic: couldn't allocate memory");
qemu_put_be64(f, FLIC_FAILED);
return;
}
count = __get_all_irqs(flic, &buf, len);
if (count < 0) {
error_report("flic: couldn't retrieve irqs from kernel, rc %d",
count);
/* Storing FLIC_FAILED into the count field here will cause the
* target system to fail when attempting to load irqs from the
* migration state */
qemu_put_be64(f, FLIC_FAILED);
} else {
qemu_put_be64(f, count);
qemu_put_buffer(f, (uint8_t *) buf,
count * sizeof(struct kvm_s390_irq));
}
g_free(buf);
}
static void kvm_arm_gicv3_realize(DeviceState *dev, Error **errp)
{
GICv3State *s = KVM_ARM_GICV3(dev);
KVMARMGICv3Class *kgc = KVM_ARM_GICV3_GET_CLASS(s);
Error *local_err = NULL;
int i;
DPRINTF("kvm_arm_gicv3_realize\n");
kgc->parent_realize(dev, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (s->security_extn) {
error_setg(errp, "the in-kernel VGICv3 does not implement the "
"security extensions");
return;
}
gicv3_init_irqs_and_mmio(s, kvm_arm_gicv3_set_irq, NULL);
/* Block migration of a KVM GICv3 device: the API for saving and restoring
* the state in the kernel is not yet finalised in the kernel or
* implemented in QEMU.
*/
error_setg(&s->migration_blocker, "vGICv3 migration is not implemented");
migrate_add_blocker(s->migration_blocker, &local_err);
if (local_err) {
error_propagate(errp, local_err);
error_free(s->migration_blocker);
return;
}
/* Try to create the device via the device control API */
s->dev_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_V3, false);
if (s->dev_fd < 0) {
error_setg_errno(errp, -s->dev_fd, "error creating in-kernel VGIC");
return;
}
kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS,
0, &s->num_irq, true);
/* Tell the kernel to complete VGIC initialization now */
kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
kvm_arm_register_device(&s->iomem_dist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR,
KVM_VGIC_V3_ADDR_TYPE_DIST, s->dev_fd);
kvm_arm_register_device(&s->iomem_redist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR,
KVM_VGIC_V3_ADDR_TYPE_REDIST, s->dev_fd);
if (kvm_has_gsi_routing()) {
/* set up irq routing */
kvm_init_irq_routing(kvm_state);
for (i = 0; i < s->num_irq - GIC_INTERNAL; ++i) {
kvm_irqchip_add_irq_route(kvm_state, i, 0, i);
}
kvm_gsi_routing_allowed = true;
kvm_irqchip_commit_routes(kvm_state);
}
}
