3a6d1fcf9c
Log:
- merge in latest xenbus from dfr's xenhvm
- fix race condition in xs_read_reply by converting tsleep to mtx_sleep
Log:
unmask evtchn in bind_{virq, ipi}_to_irq
Log:
- remove code for handling case of not being able to sleep
- eliminate tsleep - make sleeps atomic
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- */
|
|
#ifndef _XEN_INTR_H_
|
|
#define _XEN_INTR_H_
|
|
|
|
/*
|
|
* The flat IRQ space is divided into two regions:
|
|
* 1. A one-to-one mapping of real physical IRQs. This space is only used
|
|
* if we have physical device-access privilege. This region is at the
|
|
* start of the IRQ space so that existing device drivers do not need
|
|
* to be modified to translate physical IRQ numbers into our IRQ space.
|
|
* 3. A dynamic mapping of inter-domain and Xen-sourced virtual IRQs. These
|
|
* are bound using the provided bind/unbind functions.
|
|
*
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#define PIRQ_BASE 0
|
|
#define NR_PIRQS 128
|
|
|
|
#define DYNIRQ_BASE (PIRQ_BASE + NR_PIRQS)
|
|
#define NR_DYNIRQS 128
|
|
|
|
#define NR_IRQS (NR_PIRQS + NR_DYNIRQS)
|
|
|
|
#define pirq_to_irq(_x) ((_x) + PIRQ_BASE)
|
|
#define irq_to_pirq(_x) ((_x) - PIRQ_BASE)
|
|
|
|
#define dynirq_to_irq(_x) ((_x) + DYNIRQ_BASE)
|
|
#define irq_to_dynirq(_x) ((_x) - DYNIRQ_BASE)
|
|
|
|
/* Dynamic binding of event channels and VIRQ sources to Linux IRQ space. */
|
|
extern void unbind_from_irq(int irq);
|
|
|
|
extern int bind_caller_port_to_irqhandler(unsigned int caller_port,
|
|
const char *devname, driver_intr_t handler, void *arg,
|
|
unsigned long irqflags, unsigned int *irqp);
|
|
extern int bind_listening_port_to_irqhandler(unsigned int remote_domain,
|
|
const char *devname, driver_intr_t handler, void *arg, unsigned long irqflags,
|
|
unsigned int *irqp);
|
|
extern int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
|
|
const char *devname, driver_filter_t filter, driver_intr_t handler,
|
|
void *arg, unsigned long irqflags, unsigned int *irqp);
|
|
extern int bind_ipi_to_irqhandler(unsigned int ipi,
|
|
unsigned int cpu,
|
|
const char *devname,
|
|
driver_filter_t handler,
|
|
unsigned long irqflags,
|
|
unsigned int *irqp);
|
|
|
|
extern int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
|
|
unsigned int remote_port,
|
|
const char *devname,
|
|
driver_filter_t filter,
|
|
driver_intr_t handler,
|
|
unsigned long irqflags,
|
|
unsigned int *irqp);
|
|
|
|
|
|
|
|
extern void unbind_from_irqhandler(unsigned int evtchn);
|
|
static __inline__ int irq_cannonicalize(int irq)
|
|
{
|
|
return (irq == 2) ? 9 : irq;
|
|
}
|
|
|
|
extern void disable_irq(unsigned int);
|
|
extern void disable_irq_nosync(unsigned int);
|
|
extern void enable_irq(unsigned int);
|
|
|
|
extern void irq_suspend(void);
|
|
extern void irq_resume(void);
|
|
|
|
extern void idle_block(void);
|
|
extern int ap_cpu_initclocks(int cpu);
|
|
|
|
#endif /* _XEN_INTR_H_ */
|