Add a hook for port-specific setup and call it from
xen_irq_info_common_setup().
The FIFO-based ABIs may need to perform additional setup (expanding
the event array) before a bound event channel can start to receive
events.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
+ return xen_evtchn_port_setup(info);
}
static int xen_irq_info_evtchn_setup(unsigned irq,
}
static int xen_irq_info_evtchn_setup(unsigned irq,
#define PIRQ_SHAREABLE (1 << 1)
struct evtchn_ops {
#define PIRQ_SHAREABLE (1 << 1)
struct evtchn_ops {
+ int (*setup)(struct irq_info *info);
void (*bind_to_cpu)(struct irq_info *info, unsigned cpu);
void (*clear_pending)(unsigned port);
void (*bind_to_cpu)(struct irq_info *info, unsigned cpu);
void (*clear_pending)(unsigned port);
unsigned cpu_from_irq(unsigned irq);
unsigned cpu_from_evtchn(unsigned int evtchn);
unsigned cpu_from_irq(unsigned irq);
unsigned cpu_from_evtchn(unsigned int evtchn);
+/*
+ * Do any ABI specific setup for a bound event channel before it can
+ * be unmasked and used.
+ */
+static inline int xen_evtchn_port_setup(struct irq_info *info)
+{
+ if (evtchn_ops->setup)
+ return evtchn_ops->setup(info);
+ return 0;
+}
+
static inline void xen_evtchn_port_bind_to_cpu(struct irq_info *info,
unsigned cpu)
{
static inline void xen_evtchn_port_bind_to_cpu(struct irq_info *info,
unsigned cpu)
{