1#ifndef _XEN_EVENTS_H
2#define _XEN_EVENTS_H
3
4#include <linux/interrupt.h>
5#ifdef CONFIG_PCI_MSI
6#include <linux/msi.h>
7#endif
8
9#include <xen/interface/event_channel.h>
10#include <asm/xen/hypercall.h>
11#include <asm/xen/events.h>
12
13unsigned xen_evtchn_nr_channels(void);
14
15int bind_evtchn_to_irq(unsigned int evtchn);
16int bind_evtchn_to_irqhandler(unsigned int evtchn,
17 irq_handler_t handler,
18 unsigned long irqflags, const char *devname,
19 void *dev_id);
20int bind_virq_to_irq(unsigned int virq, unsigned int cpu, bool percpu);
21int 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);
25int 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);
31int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
32 unsigned int remote_port);
33int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
34 unsigned int remote_port,
35 irq_handler_t handler,
36 unsigned long irqflags,
37 const char *devname,
38 void *dev_id);
39
40
41
42
43
44
45void unbind_from_irqhandler(unsigned int irq, void *dev_id);
46
47#define XEN_IRQ_PRIORITY_MAX EVTCHN_FIFO_PRIORITY_MAX
48#define XEN_IRQ_PRIORITY_DEFAULT EVTCHN_FIFO_PRIORITY_DEFAULT
49#define XEN_IRQ_PRIORITY_MIN EVTCHN_FIFO_PRIORITY_MIN
50int xen_set_irq_priority(unsigned irq, unsigned priority);
51
52
53
54
55int evtchn_make_refcounted(unsigned int evtchn);
56int evtchn_get(unsigned int evtchn);
57void evtchn_put(unsigned int evtchn);
58
59void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
60void rebind_evtchn_irq(int evtchn, int irq);
61
62static inline void notify_remote_via_evtchn(int port)
63{
64 struct evtchn_send send = { .port = port };
65 (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send);
66}
67
68void notify_remote_via_irq(int irq);
69
70void xen_irq_resume(void);
71
72
73void xen_clear_irq_pending(int irq);
74void xen_set_irq_pending(int irq);
75bool xen_test_irq_pending(int irq);
76
77
78
79void xen_poll_irq(int irq);
80
81
82
83void xen_poll_irq_timeout(int irq, u64 timeout);
84
85
86unsigned irq_from_evtchn(unsigned int evtchn);
87int irq_from_virq(unsigned int cpu, unsigned int virq);
88unsigned int evtchn_from_irq(unsigned irq);
89
90
91void xen_hvm_callback_vector(void);
92#ifdef CONFIG_TRACING
93#define trace_xen_hvm_callback_vector xen_hvm_callback_vector
94#endif
95int xen_set_callback_via(uint64_t via);
96void xen_evtchn_do_upcall(struct pt_regs *regs);
97void xen_hvm_evtchn_do_upcall(void);
98
99
100int xen_bind_pirq_gsi_to_irq(unsigned gsi,
101 unsigned pirq, int shareable, char *name);
102
103#ifdef CONFIG_PCI_MSI
104
105int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc);
106
107int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
108 int pirq, int nvec, const char *name, domid_t domid);
109#endif
110
111
112int xen_destroy_irq(int irq);
113
114
115int xen_irq_from_pirq(unsigned pirq);
116
117
118int xen_pirq_from_irq(unsigned irq);
119
120
121int xen_irq_from_gsi(unsigned gsi);
122
123
124int xen_test_irq_shared(int irq);
125
126
127void xen_init_IRQ(void);
128#endif
129