* domain gets 1024 event channels, but NR_IRQ is not that large, we
* must dynamically map irqs<->event channels. The event channels
* interface with the rest of the kernel by defining a xen interrupt
- * chip. When an event is recieved, it is mapped to an irq and sent
+ * chip. When an event is received, it is mapped to an irq and sent
* through the normal interrupt processing path.
*
* There are four kinds of events which can be mapped to an event
unsigned short gsi;
unsigned char vector;
unsigned char flags;
+ uint16_t domid;
} pirq;
} u;
};
/* Get info for IRQ */
static struct irq_info *info_for_irq(unsigned irq)
{
- return get_irq_data(irq);
+ return irq_get_handler_data(irq);
}
/* Constructors for packed IRQ information. */
unsigned short pirq,
unsigned short gsi,
unsigned short vector,
+ uint16_t domid,
unsigned char flags)
{
struct irq_info *info = info_for_irq(irq);
info->u.pirq.pirq = pirq;
info->u.pirq.gsi = gsi;
info->u.pirq.vector = vector;
+ info->u.pirq.domid = domid;
info->u.pirq.flags = flags;
}
info->type = IRQT_UNBOUND;
- set_irq_data(irq, info);
+ irq_set_handler_data(irq, info);
list_add_tail(&info->list, &xen_irq_list_head);
}
#ifdef CONFIG_X86_IO_APIC
/*
* For an HVM guest or domain 0 which see "real" (emulated or
- * actual repectively) GSIs we allocate dynamic IRQs
+ * actual respectively) GSIs we allocate dynamic IRQs
* e.g. those corresponding to event channels or MSIs
* etc. from the range above those "real" GSIs to avoid
* collisions.
static void xen_free_irq(unsigned irq)
{
- struct irq_info *info = get_irq_data(irq);
+ struct irq_info *info = irq_get_handler_data(irq);
list_del(&info->list);
- set_irq_data(irq, NULL);
+ irq_set_handler_data(irq, NULL);
kfree(info);
{
int evtchn = evtchn_from_irq(data->irq);
- move_native_irq(data->irq);
+ irq_move_irq(data);
if (VALID_EVTCHN(evtchn)) {
mask_evtchn(evtchn);
if (irq < 0)
goto out;
- set_irq_chip_and_handler_name(irq, &xen_pirq_chip,
- handle_level_irq, name);
+ irq_set_chip_and_handler_name(irq, &xen_pirq_chip, handle_level_irq,
+ name);
irq_op.irq = irq;
irq_op.vector = 0;
goto out;
}
- xen_irq_info_pirq_init(irq, 0, pirq, gsi, irq_op.vector,
+ xen_irq_info_pirq_init(irq, 0, pirq, gsi, irq_op.vector, DOMID_SELF,
shareable ? PIRQ_SHAREABLE : 0);
out:
}
int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
- int pirq, int vector, const char *name)
+ int pirq, int vector, const char *name,
+ domid_t domid)
{
int irq, ret;
if (irq == -1)
goto out;
- set_irq_chip_and_handler_name(irq, &xen_pirq_chip,
- handle_level_irq, name);
+ irq_set_chip_and_handler_name(irq, &xen_pirq_chip, handle_level_irq,
+ name);
- xen_irq_info_pirq_init(irq, 0, pirq, 0, vector, 0);
+ xen_irq_info_pirq_init(irq, 0, pirq, 0, vector, domid, 0);
ret = irq_set_msi_desc(irq, msidesc);
if (ret < 0)
goto error_irq;
if (xen_initial_domain()) {
unmap_irq.pirq = info->u.pirq.pirq;
- unmap_irq.domid = DOMID_SELF;
+ unmap_irq.domid = info->u.pirq.domid;
rc = HYPERVISOR_physdev_op(PHYSDEVOP_unmap_pirq, &unmap_irq);
if (rc) {
printk(KERN_WARNING "unmap irq failed %d\n", rc);
if (irq == -1)
goto out;
- set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
+ irq_set_chip_and_handler_name(irq, &xen_dynamic_chip,
handle_fasteoi_irq, "event");
xen_irq_info_evtchn_init(irq, evtchn);
if (irq < 0)
goto out;
- set_irq_chip_and_handler_name(irq, &xen_percpu_chip,
+ irq_set_chip_and_handler_name(irq, &xen_percpu_chip,
handle_percpu_irq, "ipi");
bind_ipi.vcpu = cpu;
if (irq == -1)
goto out;
- set_irq_chip_and_handler_name(irq, &xen_percpu_chip,
+ irq_set_chip_and_handler_name(irq, &xen_percpu_chip,
handle_percpu_irq, "virq");
bind_virq.virq = virq;
{
int evtchn = evtchn_from_irq(data->irq);
- move_masked_irq(data->irq);
+ irq_move_masked_irq(data);
if (VALID_EVTCHN(evtchn))
unmask_evtchn(evtchn);
xen_poll_irq_timeout(irq, 0 /* no timeout */);
}
+/* Check whether the IRQ line is shared with other guests. */
+int xen_test_irq_shared(int irq)
+{
+ struct irq_info *info = info_for_irq(irq);
+ struct physdev_irq_status_query irq_status = { .irq = info->u.pirq.pirq };
+
+ if (HYPERVISOR_physdev_op(PHYSDEVOP_irq_status_query, &irq_status))
+ return 0;
+ return !(irq_status.flags & XENIRQSTAT_shared);
+}
+EXPORT_SYMBOL_GPL(xen_test_irq_shared);
+
void xen_irq_resume(void)
{
unsigned int cpu, evtchn;