static int physdev_hvm_map_pirq(
struct domain *d, int type, int *index, int *pirq)
{
int ret = 0;
spin_lock(&d->event_lock);
switch ( type )
{
case MAP_PIRQ_TYPE_GSI: {
const struct hvm_irq_dpci *hvm_irq_dpci;
unsigned int machine_gsi = 0;
if ( *index < 0 || *index >= NR_HVM_IRQS )
{
ret = -EINVAL;
break;
}
/* find the machine gsi corresponding to the
* emulated gsi */
hvm_irq_dpci = domain_get_irq_dpci(d);
if ( hvm_irq_dpci )
{
const struct hvm_girq_dpci_mapping *girq;
BUILD_BUG_ON(ARRAY_SIZE(hvm_irq_dpci->girq) < NR_HVM_IRQS);
list_for_each_entry ( girq,
&hvm_irq_dpci->girq[*index],
list )
machine_gsi = girq->machine_gsi;
}
/* found one, this mean we are dealing with a pt device */
if ( machine_gsi )
{
*index = domain_pirq_to_irq(d, machine_gsi);
*pirq = machine_gsi;
ret = (*pirq > 0) ? 0 : *pirq;
}
/* we didn't find any, this means we are dealing
* with an emulated device */
else
{
if ( *pirq < 0 )
*pirq = get_free_pirq(d, type);
ret = map_domain_emuirq_pirq(d, *pirq, *index);
}
break;
}
default:
ret = -EINVAL;
dprintk(XENLOG_G_WARNING, "map type %d not supported yet\n", type);
break;
}
spin_unlock(&d->event_lock);
return ret;
}
static int physdev_hvm_map_pirq(
struct domain *d, struct physdev_map_pirq *map)
{
int pirq, ret = 0;
spin_lock(&d->event_lock);
switch ( map->type )
{
case MAP_PIRQ_TYPE_GSI: {
struct hvm_irq_dpci *hvm_irq_dpci;
struct hvm_girq_dpci_mapping *girq;
uint32_t machine_gsi = 0;
/* find the machine gsi corresponding to the
* emulated gsi */
hvm_irq_dpci = domain_get_irq_dpci(d);
if ( hvm_irq_dpci )
{
list_for_each_entry ( girq,
&hvm_irq_dpci->girq[map->index],
list )
machine_gsi = girq->machine_gsi;
}
/* found one, this mean we are dealing with a pt device */
if ( machine_gsi )
{
map->index = domain_pirq_to_irq(d, machine_gsi);
pirq = machine_gsi;
ret = (pirq > 0) ? 0 : pirq;
}
/* we didn't find any, this means we are dealing
* with an emulated device */
else
{
pirq = map->pirq;
if ( pirq < 0 )
pirq = get_free_pirq(d, map->type, map->index);
ret = map_domain_emuirq_pirq(d, pirq, map->index);
}
map->pirq = pirq;
break;
}
default:
ret = -EINVAL;
dprintk(XENLOG_G_WARNING, "map type %d not supported yet\n", map->type);
break;
}
spin_unlock(&d->event_lock);
return ret;
}
