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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_irqhandler(unsigned int evtchn,
  17                               irq_handler_t handler,
  18                               unsigned long irqflags, const char *devname,
  19                               void *dev_id);
  20 int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
  21                             irq_handler_t handler,
  22                             unsigned long irqflags, const char *devname,
  23                             void *dev_id);
  24 int bind_ipi_to_irqhandler(enum ipi_vector ipi,
  25                            unsigned int cpu,
  26                            irq_handler_t handler,
  27                            unsigned long irqflags,
  28                            const char *devname,
  29                            void *dev_id);
  30
  31 /*
  32  * Common unbind function for all event sources. Takes IRQ to unbind from.
  33  * Automatically closes the underlying event channel (even for bindings
  34  * made with bind_evtchn_to_irqhandler()).
  35  */
  36 void unbind_from_irqhandler(unsigned int irq, void *dev_id);
  37
  38 void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
  39
  40 static inline void notify_remote_via_evtchn(int port)
  41 {
  42         struct evtchn_send send = { .port = port };
  43         (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send);
  44 }
  45
  46 extern void notify_remote_via_irq(int irq);
  47 #endif  /* _XEN_EVENTS_H */