struct consfront_dev *xencons_ring_init(void)
{
int err;
struct consfront_dev *dev;
if (!start_info.console.domU.evtchn)
return 0;
dev = bmk_memcalloc(1, sizeof(struct consfront_dev));
dev->nodename = "device/console";
dev->dom = 0;
dev->backend = 0;
dev->ring_ref = 0;
dev->evtchn = start_info.console.domU.evtchn;
dev->ring = (struct xencons_interface *) mfn_to_virt(start_info.console.domU.mfn);
err = minios_bind_evtchn(dev->evtchn, console_handle_input, dev);
if (err <= 0) {
minios_printk("XEN console request chn bind failed %i\n", err);
bmk_memfree(dev);
return NULL;
}
minios_unmask_evtchn(dev->evtchn);
/* In case we have in-flight data after save/restore... */
notify_daemon(dev);
return dev;
}
evtchn_port_t minios_bind_virq(uint32_t virq, evtchn_handler_t handler, void *data)
{
evtchn_bind_virq_t op;
int rc;
/* Try to bind the virq to a port */
op.virq = virq;
op.vcpu = smp_processor_id();
if ( (rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq, &op)) != 0 )
{
minios_printk("Failed to bind virtual IRQ %d with rc=%d\n", virq, rc);
return -1;
}
minios_bind_evtchn(op.port, handler, data);
return op.port;
}
evtchn_port_t minios_bind_pirq(uint32_t pirq, int will_share,
evtchn_handler_t handler, void *data)
{
evtchn_bind_pirq_t op;
int rc;
/* Try to bind the pirq to a port */
op.pirq = pirq;
op.flags = will_share ? BIND_PIRQ__WILL_SHARE : 0;
if ( (rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_pirq, &op)) != 0 )
{
minios_printk("Failed to bind physical IRQ %d with rc=%d\n", pirq, rc);
return -1;
}
minios_bind_evtchn(op.port, handler, data);
return op.port;
}
