Commit | Line | Data |
---|---|---|
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 | |
b536b4b9 | 10 | int bind_evtchn_to_irq(unsigned int evtchn); |
e46cdb66 | 11 | int bind_evtchn_to_irqhandler(unsigned int evtchn, |
f87e4cac | 12 | irq_handler_t handler, |
e46cdb66 JF |
13 | unsigned long irqflags, const char *devname, |
14 | void *dev_id); | |
4fe7d5a7 | 15 | int bind_virq_to_irq(unsigned int virq, unsigned int cpu); |
e46cdb66 | 16 | int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu, |
f87e4cac JF |
17 | irq_handler_t handler, |
18 | unsigned long irqflags, const char *devname, | |
19 | void *dev_id); | |
20 | int bind_ipi_to_irqhandler(enum ipi_vector ipi, | |
21 | unsigned int cpu, | |
22 | irq_handler_t handler, | |
23 | unsigned long irqflags, | |
24 | const char *devname, | |
25 | void *dev_id); | |
e46cdb66 JF |
26 | |
27 | /* | |
28 | * Common unbind function for all event sources. Takes IRQ to unbind from. | |
29 | * Automatically closes the underlying event channel (even for bindings | |
30 | * made with bind_evtchn_to_irqhandler()). | |
31 | */ | |
32 | void unbind_from_irqhandler(unsigned int irq, void *dev_id); | |
33 | ||
f87e4cac | 34 | void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector); |
642e0c88 | 35 | int resend_irq_on_evtchn(unsigned int irq); |
eb1e305f | 36 | void rebind_evtchn_irq(int evtchn, int irq); |
f87e4cac | 37 | |
e46cdb66 JF |
38 | static inline void notify_remote_via_evtchn(int port) |
39 | { | |
40 | struct evtchn_send send = { .port = port }; | |
41 | (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send); | |
42 | } | |
43 | ||
44 | extern void notify_remote_via_irq(int irq); | |
0e91398f JF |
45 | |
46 | extern void xen_irq_resume(void); | |
47 | ||
2d9e1e2f JF |
48 | /* Clear an irq's pending state, in preparation for polling on it */ |
49 | void xen_clear_irq_pending(int irq); | |
168d2f46 JF |
50 | void xen_set_irq_pending(int irq); |
51 | bool xen_test_irq_pending(int irq); | |
2d9e1e2f JF |
52 | |
53 | /* Poll waiting for an irq to become pending. In the usual case, the | |
54 | irq will be disabled so it won't deliver an interrupt. */ | |
55 | void xen_poll_irq(int irq); | |
56 | ||
d9a8814f KRW |
57 | /* Poll waiting for an irq to become pending with a timeout. In the usual case, |
58 | * the irq will be disabled so it won't deliver an interrupt. */ | |
59 | void xen_poll_irq_timeout(int irq, u64 timeout); | |
60 | ||
d4c04536 IC |
61 | /* Determine the IRQ which is bound to an event channel */ |
62 | unsigned irq_from_evtchn(unsigned int evtchn); | |
63 | ||
38e20b07 SY |
64 | /* Xen HVM evtchn vector callback */ |
65 | extern void xen_hvm_callback_vector(void); | |
66 | extern int xen_have_vector_callback; | |
67 | int xen_set_callback_via(uint64_t via); | |
68 | void xen_evtchn_do_upcall(struct pt_regs *regs); | |
69 | void xen_hvm_evtchn_do_upcall(void); | |
70 | ||
d46a78b0 JF |
71 | /* Allocate an irq for a physical interrupt, given a gsi. "Legacy" |
72 | * GSIs are identity mapped; others are dynamically allocated as | |
73 | * usual. */ | |
15ebbb82 | 74 | int xen_allocate_pirq(unsigned gsi, int shareable, char *name); |
7a043f11 | 75 | int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name); |
f731e3ef QH |
76 | |
77 | #ifdef CONFIG_PCI_MSI | |
809f9267 | 78 | /* Allocate an irq and a pirq to be used with MSIs. */ |
af42b8d1 SS |
79 | #define XEN_ALLOC_PIRQ (1 << 0) |
80 | #define XEN_ALLOC_IRQ (1 << 1) | |
81 | void xen_allocate_pirq_msi(char *name, int *irq, int *pirq, int alloc_mask); | |
f731e3ef QH |
82 | int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type); |
83 | #endif | |
d46a78b0 | 84 | |
b5401a96 AN |
85 | /* De-allocates the above mentioned physical interrupt. */ |
86 | int xen_destroy_irq(int irq); | |
87 | ||
d46a78b0 JF |
88 | /* Return vector allocated to pirq */ |
89 | int xen_vector_from_irq(unsigned pirq); | |
90 | ||
91 | /* Return gsi allocated to pirq */ | |
92 | int xen_gsi_from_irq(unsigned pirq); | |
93 | ||
af42b8d1 SS |
94 | /* Return irq from pirq */ |
95 | int xen_irq_from_pirq(unsigned pirq); | |
96 | ||
e46cdb66 | 97 | #endif /* _XEN_EVENTS_H */ |