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xen/events: support threaded irqs for interdomain event channels 

Export bind_interdomain_evtchn_to_irq() so drivers can use threaded
interrupt handlers with:

 irq = bind_interdomain_evtchn_to_irq(remote_dom, remote_port);
 if (irq < 0)
     /* error */
 ret = request_threaded_irq(...);

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
hifive-unleashed-5.1
Juergen Gross 2014-08-28 06:44:09 +02:00 committed by Stefano Stabellini
parent 46e3626adb
commit 854072dd0f
2 changed files with 5 additions and 2 deletions
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5
drivers/xen/events/events_base.c
View File

@ -900,8 +900,8 @@ static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
return irq; return irq;
} }
static int bind_interdomain_evtchn_to_irq(unsigned int remote_domain, int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
unsigned int remote_port) unsigned int remote_port)
{ {
struct evtchn_bind_interdomain bind_interdomain; struct evtchn_bind_interdomain bind_interdomain;
int err; int err;
@ -914,6 +914,7 @@ static int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
return err ? : bind_evtchn_to_irq(bind_interdomain.local_port); return err ? : bind_evtchn_to_irq(bind_interdomain.local_port);
} }
EXPORT_SYMBOL_GPL(bind_interdomain_evtchn_to_irq);
static int find_virq(unsigned int virq, unsigned int cpu) static int find_virq(unsigned int virq, unsigned int cpu)
{ {

2
include/xen/events.h
View File

@ -28,6 +28,8 @@ int bind_ipi_to_irqhandler(enum ipi_vector ipi,
unsigned long irqflags, unsigned long irqflags,
const char *devname, const char *devname,
void *dev_id); void *dev_id);
int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
unsigned int remote_port);
int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain, int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
unsigned int remote_port, unsigned int remote_port,
irq_handler_t handler, irq_handler_t handler,