24 Feb
2012
24 Feb
'12
11:12 a.m.
On 23/02/12 17:48, Stefano Stabellini wrote:
Compile events.c and use IRQ 32 to receive events notifications.
Signed-off-by: Stefano Stabellini stefano.stabellini@eu.citrix.com
+#ifdef CONFIG_ARM +#define IRQ_EVTCHN_CALLBACK 63 +irqreturn_t xen_arm_callback(int irq, void *arg) +{
- __xen_evtchn_do_upcall();
- return 0;
+}
+int __init xen_init_IRQ_arm(void) +{
- int rc;
- xen_init_IRQ();
- rc = request_irq(IRQ_EVTCHN_CALLBACK, xen_arm_callback,
IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TRIGGER_RISING,"events", "events");- if (rc) {
printk(KERN_ERR "Error requesting IRQ %d\n", IRQ_EVTCHN_CALLBACK);- }
- return rc;
+} +core_initcall(xen_init_IRQ_arm); +#endif
You should (eventually) have a device tree binding for the event channel and use a OF (device tree) device driver instead of this core_initcall() to register the handler etc.
David