| #ifndef _XEN_EVENTS_H |
| #define _XEN_EVENTS_H |
| |
| #include <linux/interrupt.h> |
| |
| #include <xen/interface/event_channel.h> |
| #include <asm/xen/hypercall.h> |
| #include <asm/xen/events.h> |
| |
| int bind_evtchn_to_irq(unsigned int evtchn); |
| int bind_evtchn_to_irqhandler(unsigned int evtchn, |
| irq_handler_t handler, |
| unsigned long irqflags, const char *devname, |
| void *dev_id); |
| int bind_virq_to_irq(unsigned int virq, unsigned int cpu); |
| int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu, |
| irq_handler_t handler, |
| unsigned long irqflags, const char *devname, |
| void *dev_id); |
| int bind_ipi_to_irqhandler(enum ipi_vector ipi, |
| unsigned int cpu, |
| irq_handler_t handler, |
| unsigned long irqflags, |
| const char *devname, |
| void *dev_id); |
| |
| /* |
| * Common unbind function for all event sources. Takes IRQ to unbind from. |
| * Automatically closes the underlying event channel (even for bindings |
| * made with bind_evtchn_to_irqhandler()). |
| */ |
| void unbind_from_irqhandler(unsigned int irq, void *dev_id); |
| |
| void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector); |
| int resend_irq_on_evtchn(unsigned int irq); |
| void rebind_evtchn_irq(int evtchn, int irq); |
| |
| static inline void notify_remote_via_evtchn(int port) |
| { |
| struct evtchn_send send = { .port = port }; |
| (void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send); |
| } |
| |
| extern void notify_remote_via_irq(int irq); |
| |
| extern void xen_irq_resume(void); |
| |
| /* Clear an irq's pending state, in preparation for polling on it */ |
| void xen_clear_irq_pending(int irq); |
| void xen_set_irq_pending(int irq); |
| bool xen_test_irq_pending(int irq); |
| |
| /* Poll waiting for an irq to become pending. In the usual case, the |
| irq will be disabled so it won't deliver an interrupt. */ |
| void xen_poll_irq(int irq); |
| |
| /* Poll waiting for an irq to become pending with a timeout. In the usual case, |
| * the irq will be disabled so it won't deliver an interrupt. */ |
| void xen_poll_irq_timeout(int irq, u64 timeout); |
| |
| /* Determine the IRQ which is bound to an event channel */ |
| unsigned irq_from_evtchn(unsigned int evtchn); |
| |
| /* Xen HVM evtchn vector callback */ |
| extern void xen_hvm_callback_vector(void); |
| extern int xen_have_vector_callback; |
| int xen_set_callback_via(uint64_t via); |
| void xen_evtchn_do_upcall(struct pt_regs *regs); |
| void xen_hvm_evtchn_do_upcall(void); |
| |
| /* Allocate an irq for a physical interrupt, given a gsi. "Legacy" |
| * GSIs are identity mapped; others are dynamically allocated as |
| * usual. */ |
| int xen_allocate_pirq(unsigned gsi, int shareable, char *name); |
| int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name); |
| |
| #ifdef CONFIG_PCI_MSI |
| int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc); |
| int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc, |
| int pirq, const char *name); |
| int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type); |
| #endif |
| |
| /* De-allocates the above mentioned physical interrupt. */ |
| int xen_destroy_irq(int irq); |
| |
| /* Return vector allocated to pirq */ |
| int xen_vector_from_irq(unsigned pirq); |
| |
| /* Return gsi allocated to pirq */ |
| int xen_gsi_from_irq(unsigned pirq); |
| |
| /* Return irq from pirq */ |
| int xen_irq_from_pirq(unsigned pirq); |
| |
| #endif /* _XEN_EVENTS_H */ |