4 #include <linux/interrupt.h>
6 #include <xen/interface/event_channel.h>
7 #include <asm/xen/hypercall.h>
8 #include <asm/xen/events.h>
10 int bind_evtchn_to_irq(unsigned int evtchn
);
11 int bind_evtchn_to_irqhandler(unsigned int evtchn
,
12 irq_handler_t handler
,
13 unsigned long irqflags
, const char *devname
,
15 int bind_virq_to_irq(unsigned int virq
, unsigned int cpu
);
16 int bind_virq_to_irqhandler(unsigned int virq
, unsigned int cpu
,
17 irq_handler_t handler
,
18 unsigned long irqflags
, const char *devname
,
20 int bind_ipi_to_irqhandler(enum ipi_vector ipi
,
22 irq_handler_t handler
,
23 unsigned long irqflags
,
26 int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain
,
27 unsigned int remote_port
,
28 irq_handler_t handler
,
29 unsigned long irqflags
,
34 * Common unbind function for all event sources. Takes IRQ to unbind from.
35 * Automatically closes the underlying event channel (even for bindings
36 * made with bind_evtchn_to_irqhandler()).
38 void unbind_from_irqhandler(unsigned int irq
, void *dev_id
);
40 void xen_send_IPI_one(unsigned int cpu
, enum ipi_vector vector
);
41 int resend_irq_on_evtchn(unsigned int irq
);
42 void rebind_evtchn_irq(int evtchn
, int irq
);
44 static inline void notify_remote_via_evtchn(int port
)
46 struct evtchn_send send
= { .port
= port
};
47 (void)HYPERVISOR_event_channel_op(EVTCHNOP_send
, &send
);
50 void notify_remote_via_irq(int irq
);
52 void xen_irq_resume(void);
54 /* Clear an irq's pending state, in preparation for polling on it */
55 void xen_clear_irq_pending(int irq
);
56 void xen_set_irq_pending(int irq
);
57 bool xen_test_irq_pending(int irq
);
59 /* Poll waiting for an irq to become pending. In the usual case, the
60 irq will be disabled so it won't deliver an interrupt. */
61 void xen_poll_irq(int irq
);
63 /* Poll waiting for an irq to become pending with a timeout. In the usual case,
64 * the irq will be disabled so it won't deliver an interrupt. */
65 void xen_poll_irq_timeout(int irq
, u64 timeout
);
67 /* Determine the IRQ which is bound to an event channel */
68 unsigned irq_from_evtchn(unsigned int evtchn
);
70 /* Xen HVM evtchn vector callback */
71 void xen_hvm_callback_vector(void);
72 extern int xen_have_vector_callback
;
73 int xen_set_callback_via(uint64_t via
);
74 void xen_evtchn_do_upcall(struct pt_regs
*regs
);
75 void xen_hvm_evtchn_do_upcall(void);
77 /* Bind a pirq for a physical interrupt to an irq. */
78 int xen_bind_pirq_gsi_to_irq(unsigned gsi
,
79 unsigned pirq
, int shareable
, char *name
);
82 /* Allocate a pirq for a MSI style physical interrupt. */
83 int xen_allocate_pirq_msi(struct pci_dev
*dev
, struct msi_desc
*msidesc
);
84 /* Bind an PSI pirq to an irq. */
85 int xen_bind_pirq_msi_to_irq(struct pci_dev
*dev
, struct msi_desc
*msidesc
,
86 int pirq
, int vector
, const char *name
,
90 /* De-allocates the above mentioned physical interrupt. */
91 int xen_destroy_irq(int irq
);
93 /* Return irq from pirq */
94 int xen_irq_from_pirq(unsigned pirq
);
96 /* Return the pirq allocated to the irq. */
97 int xen_pirq_from_irq(unsigned irq
);
99 /* Determine whether to ignore this IRQ if it is passed to a guest. */
100 int xen_test_irq_shared(int irq
);
102 #endif /* _XEN_EVENTS_H */
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