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Commit | Line | Data |
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e46cdb66 JF |
1 | #ifndef _XEN_EVENTS_H |
2 | #define _XEN_EVENTS_H | |
3 | ||
f87e4cac JF |
4 | #include <linux/interrupt.h> |
5 | ||
6 | #include <xen/interface/event_channel.h> | |
7 | #include <asm/xen/hypercall.h> | |
e849c3e9 | 8 | #include <asm/xen/events.h> |
e46cdb66 | 9 | |
0dc0064a DV |
10 | unsigned xen_evtchn_nr_channels(void); |
11 | ||
b536b4b9 | 12 | int bind_evtchn_to_irq(unsigned int evtchn); |
e46cdb66 | 13 | int bind_evtchn_to_irqhandler(unsigned int evtchn, |
f87e4cac | 14 | irq_handler_t handler, |
e46cdb66 JF |
15 | unsigned long irqflags, const char *devname, |
16 | void *dev_id); | |
4fe7d5a7 | 17 | int bind_virq_to_irq(unsigned int virq, unsigned int cpu); |
e46cdb66 | 18 | int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu, |
f87e4cac JF |
19 | irq_handler_t handler, |
20 | unsigned long irqflags, const char *devname, | |
21 | void *dev_id); | |
22 | int bind_ipi_to_irqhandler(enum ipi_vector ipi, | |
23 | unsigned int cpu, | |
24 | irq_handler_t handler, | |
25 | unsigned long irqflags, | |
26 | const char *devname, | |
27 | void *dev_id); | |
2e820f58 IC |
28 | int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain, |
29 | unsigned int remote_port, | |
30 | irq_handler_t handler, | |
31 | unsigned long irqflags, | |
32 | const char *devname, | |
33 | void *dev_id); | |
e46cdb66 JF |
34 | |
35 | /* | |
36 | * Common unbind function for all event sources. Takes IRQ to unbind from. | |
37 | * Automatically closes the underlying event channel (even for bindings | |
38 | * made with bind_evtchn_to_irqhandler()). | |
39 | */ | |
40 | void unbind_from_irqhandler(unsigned int irq, void *dev_id); | |
41 | ||
6ccecb0f DV |
42 | #define XEN_IRQ_PRIORITY_MAX EVTCHN_FIFO_PRIORITY_MAX |
43 | #define XEN_IRQ_PRIORITY_DEFAULT EVTCHN_FIFO_PRIORITY_DEFAULT | |
44 | #define XEN_IRQ_PRIORITY_MIN EVTCHN_FIFO_PRIORITY_MIN | |
45 | int xen_set_irq_priority(unsigned irq, unsigned priority); | |
46 | ||
420eb554 DDG |
47 | /* |
48 | * Allow extra references to event channels exposed to userspace by evtchn | |
49 | */ | |
50 | int evtchn_make_refcounted(unsigned int evtchn); | |
51 | int evtchn_get(unsigned int evtchn); | |
52 | void evtchn_put(unsigned int evtchn); | |
53 | ||
f87e4cac | 54 | void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector); |
642e0c88 | 55 | int resend_irq_on_evtchn(unsigned int irq); |
eb1e305f | 56 | void rebind_evtchn_irq(int evtchn, int irq); |
f87e4cac | 57 | |
e46cdb66 JF |
58 | static inline void notify_remote_via_evtchn(int port) |
59 | { | |
60 | struct evtchn_send send = { .port = port }; | |
61 | (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send); | |
62 | } | |
63 | ||
76465b2d | 64 | void notify_remote_via_irq(int irq); |
0e91398f | 65 | |
76465b2d | 66 | void xen_irq_resume(void); |
0e91398f | 67 | |
2d9e1e2f JF |
68 | /* Clear an irq's pending state, in preparation for polling on it */ |
69 | void xen_clear_irq_pending(int irq); | |
168d2f46 JF |
70 | void xen_set_irq_pending(int irq); |
71 | bool xen_test_irq_pending(int irq); | |
2d9e1e2f JF |
72 | |
73 | /* Poll waiting for an irq to become pending. In the usual case, the | |
74 | irq will be disabled so it won't deliver an interrupt. */ | |
75 | void xen_poll_irq(int irq); | |
76 | ||
d9a8814f KRW |
77 | /* Poll waiting for an irq to become pending with a timeout. In the usual case, |
78 | * the irq will be disabled so it won't deliver an interrupt. */ | |
79 | void xen_poll_irq_timeout(int irq, u64 timeout); | |
80 | ||
d4c04536 IC |
81 | /* Determine the IRQ which is bound to an event channel */ |
82 | unsigned irq_from_evtchn(unsigned int evtchn); | |
9a489f45 DV |
83 | int irq_from_virq(unsigned int cpu, unsigned int virq); |
84 | unsigned int evtchn_from_irq(unsigned irq); | |
d4c04536 | 85 | |
38e20b07 | 86 | /* Xen HVM evtchn vector callback */ |
76465b2d | 87 | void xen_hvm_callback_vector(void); |
cf910e83 SA |
88 | #ifdef CONFIG_TRACING |
89 | #define trace_xen_hvm_callback_vector xen_hvm_callback_vector | |
90 | #endif | |
38e20b07 SY |
91 | extern int xen_have_vector_callback; |
92 | int xen_set_callback_via(uint64_t via); | |
93 | void xen_evtchn_do_upcall(struct pt_regs *regs); | |
94 | void xen_hvm_evtchn_do_upcall(void); | |
95 | ||
f4d0635b IC |
96 | /* Bind a pirq for a physical interrupt to an irq. */ |
97 | int xen_bind_pirq_gsi_to_irq(unsigned gsi, | |
98 | unsigned pirq, int shareable, char *name); | |
f731e3ef QH |
99 | |
100 | #ifdef CONFIG_PCI_MSI | |
f4d0635b | 101 | /* Allocate a pirq for a MSI style physical interrupt. */ |
bf480d95 | 102 | int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc); |
f4d0635b | 103 | /* Bind an PSI pirq to an irq. */ |
bf480d95 | 104 | int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc, |
dec02dea | 105 | int pirq, const char *name, domid_t domid); |
f731e3ef | 106 | #endif |
d46a78b0 | 107 | |
b5401a96 AN |
108 | /* De-allocates the above mentioned physical interrupt. */ |
109 | int xen_destroy_irq(int irq); | |
110 | ||
af42b8d1 SS |
111 | /* Return irq from pirq */ |
112 | int xen_irq_from_pirq(unsigned pirq); | |
113 | ||
e6197acc KRW |
114 | /* Return the pirq allocated to the irq. */ |
115 | int xen_pirq_from_irq(unsigned irq); | |
116 | ||
68c2c39a SS |
117 | /* Return the irq allocated to the gsi */ |
118 | int xen_irq_from_gsi(unsigned gsi); | |
119 | ||
c7c2c3a2 KRW |
120 | /* Determine whether to ignore this IRQ if it is passed to a guest. */ |
121 | int xen_test_irq_shared(int irq); | |
122 | ||
0ec53ecf SS |
123 | /* initialize Xen IRQ subsystem */ |
124 | void xen_init_IRQ(void); | |
e46cdb66 | 125 | #endif /* _XEN_EVENTS_H */ |