Release 4.15 include/xen/events.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _XEN_EVENTS_H
#define _XEN_EVENTS_H
#include <linux/interrupt.h>
#ifdef CONFIG_PCI_MSI
#include <linux/msi.h>
#endif
#include <xen/interface/event_channel.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/events.h>
unsigned xen_evtchn_nr_channels(void);
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, bool percpu);
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);
int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
unsigned int remote_port);
int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
unsigned int remote_port,
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);
#define XEN_IRQ_PRIORITY_MAX EVTCHN_FIFO_PRIORITY_MAX
#define XEN_IRQ_PRIORITY_DEFAULT EVTCHN_FIFO_PRIORITY_DEFAULT
#define XEN_IRQ_PRIORITY_MIN EVTCHN_FIFO_PRIORITY_MIN
int xen_set_irq_priority(unsigned irq, unsigned priority);
/*
* Allow extra references to event channels exposed to userspace by evtchn
*/
int evtchn_make_refcounted(unsigned int evtchn);
int evtchn_get(unsigned int evtchn);
void evtchn_put(unsigned int evtchn);
void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
void rebind_evtchn_irq(int evtchn, int irq);
int xen_rebind_evtchn_to_cpu(int evtchn, unsigned tcpu);
static inline void notify_remote_via_evtchn(int port)
{
struct evtchn_send send = { .port = port };
(void)HYPERVISOR_event_channel_op(EVTCHNOP_send, &send);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeremy Fitzhardinge | 32 | 100.00% | 1 | 100.00% |
| Total | 32 | 100.00% | 1 | 100.00% |
void notify_remote_via_irq(int irq);
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);
int irq_from_virq(unsigned int cpu, unsigned int virq);
unsigned int evtchn_from_irq(unsigned irq);
/* Xen HVM evtchn vector callback */
void xen_hvm_callback_vector(void);
#ifdef CONFIG_TRACING
#define trace_xen_hvm_callback_vector xen_hvm_callback_vector
#endif
int xen_set_callback_via(uint64_t via);
void xen_evtchn_do_upcall(struct pt_regs *regs);
void xen_hvm_evtchn_do_upcall(void);
/* Bind a pirq for a physical interrupt to an irq. */
int xen_bind_pirq_gsi_to_irq(unsigned gsi,
unsigned pirq, int shareable, char *name);
#ifdef CONFIG_PCI_MSI
/* Allocate a pirq for a MSI style physical interrupt. */
int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc);
/* Bind an PSI pirq to an irq. */
int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
int pirq, int nvec, const char *name, domid_t domid);
#endif
/* De-allocates the above mentioned physical interrupt. */
int xen_destroy_irq(int irq);
/* Return irq from pirq */
int xen_irq_from_pirq(unsigned pirq);
/* Return the pirq allocated to the irq. */
int xen_pirq_from_irq(unsigned irq);
/* Return the irq allocated to the gsi */
int xen_irq_from_gsi(unsigned gsi);
/* Determine whether to ignore this IRQ if it is passed to a guest. */
int xen_test_irq_shared(int irq);
/* initialize Xen IRQ subsystem */
void xen_init_IRQ(void);
#endif /* _XEN_EVENTS_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeremy Fitzhardinge | 228 | 42.38% | 8 | 22.22% |
| Ian Campbell | 69 | 12.83% | 5 | 13.89% |
| David Vrabel | 51 | 9.48% | 4 | 11.11% |
| Stefano Stabellini | 47 | 8.74% | 5 | 13.89% |
| Konrad Rzeszutek Wilk | 30 | 5.58% | 4 | 11.11% |
| Sheng Yang | 29 | 5.39% | 1 | 2.78% |
| Daniel De Graaf | 25 | 4.65% | 1 | 2.78% |
| Juergen Gross | 12 | 2.23% | 1 | 2.78% |
| Roger Pau Monné | 11 | 2.04% | 1 | 2.78% |
| Anoob Soman | 10 | 1.86% | 1 | 2.78% |
| Seiji Aguchi | 9 | 1.67% | 1 | 2.78% |
| Alex Nixon | 8 | 1.49% | 1 | 2.78% |
| Qing He | 5 | 0.93% | 1 | 2.78% |
| Isaku Yamahata | 3 | 0.56% | 1 | 2.78% |
| Greg Kroah-Hartman | 1 | 0.19% | 1 | 2.78% |
| Total | 538 | 100.00% | 36 | 100.00% |
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