diff options
| author | Ian Campbell <ian.campbell@citrix.com> | 2009-02-09 12:05:50 -0800 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-02-28 09:39:37 -0500 |
| commit | 2e820f58f7ad8eaca2f194ccdfea0de63e9c6d78 (patch) | |
| tree | d91acfeb40e6cd420be57877170c5abaf5b958d4 | |
| parent | 1bae4ce27c9c90344f23c65ea6966c50ffeae2f5 (diff) | |
xen/irq: implement bind_interdomain_evtchn_to_irqhandler for backend drivers
Impact: new Xen-internal API
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| -rw-r--r-- | drivers/xen/events.c | 38 | ||||
| -rw-r--r-- | include/xen/events.h | 6 |
2 files changed, 44 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 74681478100a..a41601675633 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -864,6 +864,21 @@ static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu) return irq; } +static int bind_interdomain_evtchn_to_irq(unsigned int remote_domain, + unsigned int remote_port) +{ + struct evtchn_bind_interdomain bind_interdomain; + int err; + + bind_interdomain.remote_dom = remote_domain; + bind_interdomain.remote_port = remote_port; + + err = HYPERVISOR_event_channel_op(EVTCHNOP_bind_interdomain, + &bind_interdomain); + + return err ? : bind_evtchn_to_irq(bind_interdomain.local_port); +} + int bind_virq_to_irq(unsigned int virq, unsigned int cpu) { @@ -959,6 +974,29 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn, } EXPORT_SYMBOL_GPL(bind_evtchn_to_irqhandler); +int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain, + unsigned int remote_port, + irq_handler_t handler, + unsigned long irqflags, + const char *devname, + void *dev_id) +{ + int irq, retval; + + irq = bind_interdomain_evtchn_to_irq(remote_domain, remote_port); + if (irq < 0) + return irq; + + retval = request_irq(irq, handler, irqflags, devname, dev_id); + if (retval != 0) { + unbind_from_irq(irq); + return retval; + } + + return irq; +} +EXPORT_SYMBOL_GPL(bind_interdomain_evtchn_to_irqhandler); + int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu, irq_handler_t handler, unsigned long irqflags, const char *devname, void *dev_id) diff --git a/include/xen/events.h b/include/xen/events.h index 00f53ddcc062..bd03b1e4a2f4 100644 --- a/include/xen/events.h +++ b/include/xen/events.h @@ -23,6 +23,12 @@ int bind_ipi_to_irqhandler(enum ipi_vector ipi, unsigned long irqflags, const char *devname, void *dev_id); +int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain, + unsigned int remote_port, + irq_handler_t handler, + unsigned long irqflags, + const char *devname, + void *dev_id); /* * Common unbind function for all event sources. Takes IRQ to unbind from. |