int
bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
{
struct evtchn_bind_ipi bind_ipi;
int irq;
int evtchn = 0;
mtx_lock_spin(&irq_mapping_update_lock);
if ((irq = pcpu_find(cpu)->pc_ipi_to_irq[ipi]) == -1) {
if ((irq = find_unbound_irq()) < 0)
goto out;
bind_ipi.vcpu = cpu;
HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi, &bind_ipi);
evtchn = bind_ipi.port;
evtchn_to_irq[evtchn] = irq;
irq_info[irq] = mk_irq_info(IRQT_IPI, ipi, evtchn);
pcpu_find(cpu)->pc_ipi_to_irq[ipi] = irq;
bind_evtchn_to_cpu(evtchn, cpu);
}
irq_bindcount[irq]++;
unmask_evtchn(evtchn);
out:
mtx_unlock_spin(&irq_mapping_update_lock);
return irq;
}
static int
bind_local_port_to_irq(unsigned int local_port)
{
int irq;
mtx_lock_spin(&irq_mapping_update_lock);
KASSERT(evtchn_to_irq[local_port] == -1,
("evtchn_to_irq inconsistent"));
if ((irq = find_unbound_irq()) < 0) {
struct evtchn_close close = { .port = local_port };
HYPERVISOR_event_channel_op(EVTCHNOP_close, &close);
goto out;
}
evtchn_to_irq[local_port] = irq;
irq_info[irq] = mk_irq_info(IRQT_LOCAL_PORT, 0, local_port);
irq_bindcount[irq]++;
unmask_evtchn(local_port);
out:
mtx_unlock_spin(&irq_mapping_update_lock);
return irq;
}
static int
bind_virq_to_irq(unsigned int virq, unsigned int cpu)
{
struct evtchn_bind_virq bind_virq;
int evtchn = 0, irq;
mtx_lock_spin(&irq_mapping_update_lock);
if ((irq = pcpu_find(cpu)->pc_virq_to_irq[virq]) == -1) {
if ((irq = find_unbound_irq()) < 0)
goto out;
bind_virq.virq = virq;
bind_virq.vcpu = cpu;
HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq, &bind_virq);
evtchn = bind_virq.port;
evtchn_to_irq[evtchn] = irq;
irq_info[irq] = mk_irq_info(IRQT_VIRQ, virq, evtchn);
pcpu_find(cpu)->pc_virq_to_irq[virq] = irq;
bind_evtchn_to_cpu(evtchn, cpu);
}
irq_bindcount[irq]++;
unmask_evtchn(evtchn);
out:
mtx_unlock_spin(&irq_mapping_update_lock);
return irq;
}
static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
{
struct evtchn_bind_ipi bind_ipi;
int evtchn, irq;
spin_lock(&irq_mapping_update_lock);
if ((irq = per_cpu(ipi_to_irq, cpu)[ipi]) == -1) {
if ((irq = find_unbound_irq()) < 0)
goto out;
bind_ipi.vcpu = cpu;
if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi,
&bind_ipi) != 0)
BUG();
evtchn = bind_ipi.port;
evtchn_to_irq[evtchn] = irq;
irq_info[irq] = mk_irq_info(IRQT_IPI, ipi, evtchn);
per_cpu(ipi_to_irq, cpu)[ipi] = irq;
bind_evtchn_to_cpu(evtchn, cpu);
}
irq_bindcount[irq]++;
out:
spin_unlock(&irq_mapping_update_lock);
return irq;
}
static int bind_virq_to_irq(unsigned int virq, unsigned int cpu)
{
struct evtchn_bind_virq bind_virq;
int evtchn, irq;
spin_lock(&irq_mapping_update_lock);
if ((irq = per_cpu(virq_to_irq, cpu)[virq]) == -1) {
bind_virq.virq = virq;
bind_virq.vcpu = cpu;
if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
&bind_virq) != 0)
BUG();
evtchn = bind_virq.port;
irq = find_unbound_irq();
evtchn_to_irq[evtchn] = irq;
irq_info[irq] = mk_irq_info(IRQT_VIRQ, virq, evtchn);
per_cpu(virq_to_irq, cpu)[virq] = irq;
bind_evtchn_to_cpu(evtchn, cpu);
}
irq_bindcount[irq]++;
spin_unlock(&irq_mapping_update_lock);
return irq;
}
static int bind_evtchn_to_irq(unsigned int evtchn)
{
int irq;
spin_lock(&irq_mapping_update_lock);
if ((irq = evtchn_to_irq[evtchn]) == -1) {
irq = find_unbound_irq();
evtchn_to_irq[evtchn] = irq;
irq_info[irq] = mk_irq_info(IRQT_EVTCHN, 0, evtchn);
}
irq_bindcount[irq]++;
spin_unlock(&irq_mapping_update_lock);
return irq;
}
static int bind_caller_port_to_irq(unsigned int caller_port)
{
int irq;
spin_lock(&irq_mapping_update_lock);
if ((irq = evtchn_to_irq[caller_port]) == -1) {
if ((irq = find_unbound_irq()) < 0)
goto out;
evtchn_to_irq[caller_port] = irq;
irq_info[irq] = mk_irq_info(IRQT_CALLER_PORT, 0, caller_port);
}
irq_bindcount[irq]++;
out:
spin_unlock(&irq_mapping_update_lock);
return irq;
}
static int bind_local_port_to_irq(unsigned int local_port)
{
int irq;
spin_lock(&irq_mapping_update_lock);
BUG_ON(evtchn_to_irq[local_port] != -1);
if ((irq = find_unbound_irq()) < 0) {
struct evtchn_close close = { .port = local_port };
if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close))
BUG();
goto out;
}
evtchn_to_irq[local_port] = irq;
irq_info[irq] = mk_irq_info(IRQT_LOCAL_PORT, 0, local_port);
irq_bindcount[irq]++;
out:
spin_unlock(&irq_mapping_update_lock);
return irq;
}
