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   1 #ifndef _XEN_EVENTS_H
   2 #define _XEN_EVENTS_H
   3
   4 #include <linux/interrupt.h>
   5
   6 #include <xen/interface/event_channel.h>
   7 #include <asm/xen/hypercall.h>
   8
   9 enum ipi_vector {
  10         XEN_RESCHEDULE_VECTOR,
  11         XEN_CALL_FUNCTION_VECTOR,
  12
  13         XEN_NR_IPIS,
  14 };
  15
  16 int bind_evtchn_to_irq(unsigned int evtchn);
  17 int bind_evtchn_to_irqhandler(unsigned int evtchn,
  18                               irq_handler_t handler,
  19                               unsigned long irqflags, const char *devname,
  20                               void *dev_id);
  21 int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
  22                             irq_handler_t handler,
  23                             unsigned long irqflags, const char *devname,
  24                             void *dev_id);
  25 int bind_ipi_to_irqhandler(enum ipi_vector ipi,
  26                            unsigned int cpu,
  27                            irq_handler_t handler,
  28                            unsigned long irqflags,
  29                            const char *devname,
  30                            void *dev_id);
  31
  32 /*
  33  * Common unbind function for all event sources. Takes IRQ to unbind from.
  34  * Automatically closes the underlying event channel (even for bindings
  35  * made with bind_evtchn_to_irqhandler()).
  36  */
  37 void unbind_from_irqhandler(unsigned int irq, void *dev_id);
  38
  39 void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
  40
  41 static inline void notify_remote_via_evtchn(int port)
  42 {
  43         struct evtchn_send send = { .port = port };
  44         (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send);
  45 }
  46
  47 extern void notify_remote_via_irq(int irq);
  48 #endif  /* _XEN_EVENTS_H */