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Jeremy Fitzhardingee46cdb62007-07-17 18:37:05 -07001#ifndef _XEN_EVENTS_H
2#define _XEN_EVENTS_H
3
Jeremy Fitzhardingef87e4ca2007-07-17 18:37:06 -07004#include <linux/interrupt.h>
5
6#include <xen/interface/event_channel.h>
7#include <asm/xen/hypercall.h>
Isaku Yamahatae849c3e2008-04-02 10:53:56 -07008#include <asm/xen/events.h>
Jeremy Fitzhardingee46cdb62007-07-17 18:37:05 -07009
Jeremy Fitzhardingeb536b4b2007-07-17 18:37:06 -070010int bind_evtchn_to_irq(unsigned int evtchn);
Jeremy Fitzhardingee46cdb62007-07-17 18:37:05 -070011int bind_evtchn_to_irqhandler(unsigned int evtchn,
Jeremy Fitzhardingef87e4ca2007-07-17 18:37:06 -070012 irq_handler_t handler,
Jeremy Fitzhardingee46cdb62007-07-17 18:37:05 -070013 unsigned long irqflags, const char *devname,
14 void *dev_id);
15int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
Jeremy Fitzhardingef87e4ca2007-07-17 18:37:06 -070016 irq_handler_t handler,
17 unsigned long irqflags, const char *devname,
18 void *dev_id);
19int bind_ipi_to_irqhandler(enum ipi_vector ipi,
20 unsigned int cpu,
21 irq_handler_t handler,
22 unsigned long irqflags,
23 const char *devname,
24 void *dev_id);
Jeremy Fitzhardingee46cdb62007-07-17 18:37:05 -070025
26/*
27 * Common unbind function for all event sources. Takes IRQ to unbind from.
28 * Automatically closes the underlying event channel (even for bindings
29 * made with bind_evtchn_to_irqhandler()).
30 */
31void unbind_from_irqhandler(unsigned int irq, void *dev_id);
32
Jeremy Fitzhardingef87e4ca2007-07-17 18:37:06 -070033void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
Isaku Yamahata642e0c82008-04-02 10:53:57 -070034int resend_irq_on_evtchn(unsigned int irq);
Jeremy Fitzhardingeeb1e3052008-05-26 23:31:23 +010035void rebind_evtchn_irq(int evtchn, int irq);
Jeremy Fitzhardingef87e4ca2007-07-17 18:37:06 -070036
Jeremy Fitzhardingee46cdb62007-07-17 18:37:05 -070037static inline void notify_remote_via_evtchn(int port)
38{
39 struct evtchn_send send = { .port = port };
40 (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send);
41}
42
43extern void notify_remote_via_irq(int irq);
Jeremy Fitzhardinge0e913982008-05-26 23:31:27 +010044
45extern void xen_irq_resume(void);
46
Jeremy Fitzhardinge2d9e1e22008-07-07 12:07:53 -070047/* Clear an irq's pending state, in preparation for polling on it */
48void xen_clear_irq_pending(int irq);
Jeremy Fitzhardinge168d2f42008-08-20 17:02:18 -070049void xen_set_irq_pending(int irq);
50bool xen_test_irq_pending(int irq);
Jeremy Fitzhardinge2d9e1e22008-07-07 12:07:53 -070051
52/* Poll waiting for an irq to become pending. In the usual case, the
53 irq will be disabled so it won't deliver an interrupt. */
54void xen_poll_irq(int irq);
55
Ian Campbelld4c04532009-02-06 19:20:31 -080056/* Determine the IRQ which is bound to an event channel */
57unsigned irq_from_evtchn(unsigned int evtchn);
58
Sheng Yang38e20b02010-05-14 12:40:51 +010059/* Xen HVM evtchn vector callback */
60extern void xen_hvm_callback_vector(void);
61extern int xen_have_vector_callback;
62int xen_set_callback_via(uint64_t via);
63void xen_evtchn_do_upcall(struct pt_regs *regs);
64void xen_hvm_evtchn_do_upcall(void);
65
Jeremy Fitzhardingee46cdb62007-07-17 18:37:05 -070066#endif /* _XEN_EVENTS_H */