int
bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
unsigned int remote_port, const char *devname,
driver_intr_t handler, void *arg, unsigned long irqflags,
unsigned int *irqp)
{
unsigned int irq;
int port = -1;
int error;
irq = bind_interdomain_evtchn_to_irq(remote_domain, remote_port, &port);
intr_register_source(&xp->xp_pins[irq].xp_intsrc);
error = intr_add_handler(devname, irq, NULL, handler, arg,
irqflags, &xp->xp_pins[irq].xp_cookie);
if (error) {
unbind_from_irq(irq);
return (error);
}
if (port != -1)
unmask_evtchn(port);
if (irqp)
*irqp = irq;
return (0);
}
static void
atpic_register_sources(struct pic *pic)
{
struct atpic *ap = (struct atpic *)pic;
struct atpic_intsrc *ai;
int i;
/*
* If any of the ISA IRQs have an interrupt source already, then
* assume that the I/O APICs are being used and don't register any
* of our interrupt sources. This makes sure we don't accidentally
* use mixed mode. The "accidental" use could otherwise occur on
* machines that route the ACPI SCI interrupt to a different ISA
* IRQ (at least one machine routes it to IRQ 13) thus disabling
* that APIC ISA routing and allowing the ATPIC source for that IRQ
* to leak through. We used to depend on this feature for routing
* IRQ0 via mixed mode, but now we don't use mixed mode at all.
*
* To avoid the slave not register sources after the master
* registers its sources, register all IRQs when this function is
* called on the master.
*/
if (ap != &atpics[MASTER])
return;
for (i = 0; i < NUM_ISA_IRQS; i++)
if (intr_lookup_source(i) != NULL)
return;
/* Loop through all interrupt sources and add them. */
for (i = 0, ai = atintrs; i < NUM_ISA_IRQS; i++, ai++) {
if (i == ICU_SLAVEID)
continue;
intr_register_source(&ai->at_intsrc);
}
}
int
bind_ipi_to_irqhandler(unsigned int ipi, unsigned int cpu,
const char *devname, driver_filter_t filter,
unsigned long irqflags, unsigned int *irqp)
{
unsigned int irq;
int error;
irq = bind_ipi_to_irq(ipi, cpu);
intr_register_source(&xp->xp_pins[irq].xp_intsrc);
error = intr_add_handler(devname, irq, filter, NULL,
NULL, irqflags, &xp->xp_pins[irq].xp_cookie);
if (error) {
unbind_from_irq(irq);
return (error);
}
if (irqp)
*irqp = irq;
return (0);
}
static void
msi_create_source(void)
{
struct msi_intsrc *msi;
u_int irq;
mtx_lock(&msi_lock);
if (msi_last_irq >= NUM_MSI_INTS) {
mtx_unlock(&msi_lock);
return;
}
irq = msi_last_irq + FIRST_MSI_INT;
msi_last_irq++;
mtx_unlock(&msi_lock);
msi = malloc(sizeof(struct msi_intsrc), M_MSI, M_WAITOK | M_ZERO);
msi->msi_intsrc.is_pic = &msi_pic;
msi->msi_irq = irq;
intr_register_source(&msi->msi_intsrc);
nexus_add_irq(irq);
}
int
bind_caller_port_to_irqhandler(unsigned int caller_port,
const char *devname, driver_intr_t handler, void *arg,
unsigned long irqflags, unsigned int *irqp)
{
unsigned int irq;
int error;
irq = bind_caller_port_to_irq(caller_port);
intr_register_source(&xp->xp_pins[irq].xp_intsrc);
error = intr_add_handler(devname, irq, NULL, handler, arg, irqflags,
&xp->xp_pins[irq].xp_cookie);
if (error) {
unbind_from_irq(irq);
return (error);
}
if (irqp)
*irqp = irq;
return (0);
}
int
bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
const char *devname, driver_filter_t filter, driver_intr_t handler,
void *arg, unsigned long irqflags, unsigned int *irqp)
{
unsigned int irq;
int port = -1;
int error;
irq = bind_virq_to_irq(virq, cpu, &port);
intr_register_source(&xp->xp_pins[irq].xp_intsrc);
error = intr_add_handler(devname, irq, filter, handler,
arg, irqflags, &xp->xp_pins[irq].xp_cookie);
if (error) {
unbind_from_irq(irq);
return (error);
}
if (port != -1)
unmask_evtchn(port);
if (irqp)
*irqp = irq;
return (0);
}