Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 1 | #ifndef _XEN_EVENTS_H |
| 2 | #define _XEN_EVENTS_H |
| 3 | |
Jeremy Fitzhardinge | f87e4ca | 2007-07-17 18:37:06 -0700 | [diff] [blame] | 4 | #include <linux/interrupt.h> |
| 5 | |
| 6 | #include <xen/interface/event_channel.h> |
| 7 | #include <asm/xen/hypercall.h> |
Isaku Yamahata | e849c3e | 2008-04-02 10:53:56 -0700 | [diff] [blame] | 8 | #include <asm/xen/events.h> |
Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 9 | |
Jeremy Fitzhardinge | b536b4b | 2007-07-17 18:37:06 -0700 | [diff] [blame] | 10 | int bind_evtchn_to_irq(unsigned int evtchn); |
Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 11 | int bind_evtchn_to_irqhandler(unsigned int evtchn, |
Jeremy Fitzhardinge | f87e4ca | 2007-07-17 18:37:06 -0700 | [diff] [blame] | 12 | irq_handler_t handler, |
Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 13 | unsigned long irqflags, const char *devname, |
| 14 | void *dev_id); |
Jeremy Fitzhardinge | 4fe7d5a | 2010-09-02 16:17:06 +0100 | [diff] [blame] | 15 | int bind_virq_to_irq(unsigned int virq, unsigned int cpu); |
Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 16 | int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu, |
Jeremy Fitzhardinge | f87e4ca | 2007-07-17 18:37:06 -0700 | [diff] [blame] | 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); |
Ian Campbell | 2e820f5 | 2009-02-09 12:05:50 -0800 | [diff] [blame] | 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, |
| 30 | const char *devname, |
| 31 | void *dev_id); |
Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 32 | |
| 33 | /* |
| 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()). |
| 37 | */ |
| 38 | void unbind_from_irqhandler(unsigned int irq, void *dev_id); |
| 39 | |
Jeremy Fitzhardinge | f87e4ca | 2007-07-17 18:37:06 -0700 | [diff] [blame] | 40 | void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector); |
Isaku Yamahata | 642e0c8 | 2008-04-02 10:53:57 -0700 | [diff] [blame] | 41 | int resend_irq_on_evtchn(unsigned int irq); |
Jeremy Fitzhardinge | eb1e305 | 2008-05-26 23:31:23 +0100 | [diff] [blame] | 42 | void rebind_evtchn_irq(int evtchn, int irq); |
Jeremy Fitzhardinge | f87e4ca | 2007-07-17 18:37:06 -0700 | [diff] [blame] | 43 | |
Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 44 | static inline void notify_remote_via_evtchn(int port) |
| 45 | { |
| 46 | struct evtchn_send send = { .port = port }; |
| 47 | (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send); |
| 48 | } |
| 49 | |
Ian Campbell | 76465b2 | 2011-03-10 16:08:05 +0000 | [diff] [blame] | 50 | void notify_remote_via_irq(int irq); |
Jeremy Fitzhardinge | 0e91398 | 2008-05-26 23:31:27 +0100 | [diff] [blame] | 51 | |
Ian Campbell | 76465b2 | 2011-03-10 16:08:05 +0000 | [diff] [blame] | 52 | void xen_irq_resume(void); |
Jeremy Fitzhardinge | 0e91398 | 2008-05-26 23:31:27 +0100 | [diff] [blame] | 53 | |
Jeremy Fitzhardinge | 2d9e1e2 | 2008-07-07 12:07:53 -0700 | [diff] [blame] | 54 | /* Clear an irq's pending state, in preparation for polling on it */ |
| 55 | void xen_clear_irq_pending(int irq); |
Jeremy Fitzhardinge | 168d2f4 | 2008-08-20 17:02:18 -0700 | [diff] [blame] | 56 | void xen_set_irq_pending(int irq); |
| 57 | bool xen_test_irq_pending(int irq); |
Jeremy Fitzhardinge | 2d9e1e2 | 2008-07-07 12:07:53 -0700 | [diff] [blame] | 58 | |
| 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); |
| 62 | |
Konrad Rzeszutek Wilk | d9a8814 | 2009-11-05 16:33:09 -0500 | [diff] [blame] | 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); |
| 66 | |
Ian Campbell | d4c0453 | 2009-02-06 19:20:31 -0800 | [diff] [blame] | 67 | /* Determine the IRQ which is bound to an event channel */ |
| 68 | unsigned irq_from_evtchn(unsigned int evtchn); |
| 69 | |
Sheng Yang | 38e20b0 | 2010-05-14 12:40:51 +0100 | [diff] [blame] | 70 | /* Xen HVM evtchn vector callback */ |
Ian Campbell | 76465b2 | 2011-03-10 16:08:05 +0000 | [diff] [blame] | 71 | void xen_hvm_callback_vector(void); |
Sheng Yang | 38e20b0 | 2010-05-14 12:40:51 +0100 | [diff] [blame] | 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); |
| 76 | |
Ian Campbell | f4d0635 | 2011-03-10 16:08:07 +0000 | [diff] [blame] | 77 | /* Allocate a pirq for a physical interrupt, given a gsi. */ |
| 78 | int xen_allocate_pirq_gsi(unsigned gsi); |
| 79 | /* Bind a pirq for a physical interrupt to an irq. */ |
| 80 | int xen_bind_pirq_gsi_to_irq(unsigned gsi, |
| 81 | unsigned pirq, int shareable, char *name); |
Qing He | f731e3ef | 2010-10-11 15:30:09 +0100 | [diff] [blame] | 82 | |
| 83 | #ifdef CONFIG_PCI_MSI |
Ian Campbell | f4d0635 | 2011-03-10 16:08:07 +0000 | [diff] [blame] | 84 | /* Allocate a pirq for a MSI style physical interrupt. */ |
Ian Campbell | bf480d9 | 2011-02-18 16:43:32 +0000 | [diff] [blame] | 85 | int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc); |
Ian Campbell | f4d0635 | 2011-03-10 16:08:07 +0000 | [diff] [blame] | 86 | /* Bind an PSI pirq to an irq. */ |
Ian Campbell | bf480d9 | 2011-02-18 16:43:32 +0000 | [diff] [blame] | 87 | int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc, |
Konrad Rzeszutek Wilk | beafbdc | 2011-04-14 11:17:36 -0400 | [diff] [blame^] | 88 | int pirq, int vector, const char *name, |
| 89 | domid_t domid); |
Qing He | f731e3ef | 2010-10-11 15:30:09 +0100 | [diff] [blame] | 90 | #endif |
Jeremy Fitzhardinge | d46a78b | 2010-10-01 12:20:09 -0400 | [diff] [blame] | 91 | |
Alex Nixon | b5401a9 | 2010-03-18 16:31:34 -0400 | [diff] [blame] | 92 | /* De-allocates the above mentioned physical interrupt. */ |
| 93 | int xen_destroy_irq(int irq); |
| 94 | |
Stefano Stabellini | af42b8d | 2010-12-01 14:51:44 +0000 | [diff] [blame] | 95 | /* Return irq from pirq */ |
| 96 | int xen_irq_from_pirq(unsigned pirq); |
| 97 | |
Jeremy Fitzhardinge | e46cdb6 | 2007-07-17 18:37:05 -0700 | [diff] [blame] | 98 | #endif /* _XEN_EVENTS_H */ |