diff options
Diffstat (limited to 'drivers/xen/events/events_internal.h')
-rw-r--r-- | drivers/xen/events/events_internal.h | 76 |
1 files changed, 18 insertions, 58 deletions
diff --git a/drivers/xen/events/events_internal.h b/drivers/xen/events/events_internal.h index 10684feb094e..0a97c0549db7 100644 --- a/drivers/xen/events/events_internal.h +++ b/drivers/xen/events/events_internal.h @@ -7,58 +7,15 @@ #ifndef __EVENTS_INTERNAL_H__ #define __EVENTS_INTERNAL_H__ -/* Interrupt types. */ -enum xen_irq_type { - IRQT_UNBOUND = 0, - IRQT_PIRQ, - IRQT_VIRQ, - IRQT_IPI, - IRQT_EVTCHN -}; - -/* - * Packed IRQ information: - * type - enum xen_irq_type - * event channel - irq->event channel mapping - * cpu - cpu this event channel is bound to - * index - type-specific information: - * PIRQ - vector, with MSB being "needs EIO", or physical IRQ of the HVM - * guest, or GSI (real passthrough IRQ) of the device. - * VIRQ - virq number - * IPI - IPI vector - * EVTCHN - - */ -struct irq_info { - struct list_head list; - int refcnt; - enum xen_irq_type type; /* type */ - unsigned irq; - evtchn_port_t evtchn; /* event channel */ - unsigned short cpu; /* cpu bound */ - - union { - unsigned short virq; - enum ipi_vector ipi; - struct { - unsigned short pirq; - unsigned short gsi; - unsigned char vector; - unsigned char flags; - uint16_t domid; - } pirq; - } u; -}; - -#define PIRQ_NEEDS_EOI (1 << 0) -#define PIRQ_SHAREABLE (1 << 1) -#define PIRQ_MSI_GROUP (1 << 2) +struct evtchn_loop_ctrl; struct evtchn_ops { unsigned (*max_channels)(void); unsigned (*nr_channels)(void); - int (*setup)(struct irq_info *info); - void (*bind_to_cpu)(struct irq_info *info, unsigned cpu); + int (*setup)(evtchn_port_t port); + void (*bind_to_cpu)(evtchn_port_t evtchn, unsigned int cpu, + unsigned int old_cpu); void (*clear_pending)(evtchn_port_t port); void (*set_pending)(evtchn_port_t port); @@ -67,17 +24,18 @@ struct evtchn_ops { void (*mask)(evtchn_port_t port); void (*unmask)(evtchn_port_t port); - void (*handle_events)(unsigned cpu); + void (*handle_events)(unsigned cpu, struct evtchn_loop_ctrl *ctrl); void (*resume)(void); + + int (*percpu_init)(unsigned int cpu); + int (*percpu_deinit)(unsigned int cpu); }; extern const struct evtchn_ops *evtchn_ops; -extern int **evtchn_to_irq; int get_evtchn_to_irq(evtchn_port_t evtchn); +void handle_irq_for_port(evtchn_port_t port, struct evtchn_loop_ctrl *ctrl); -struct irq_info *info_for_irq(unsigned irq); -unsigned cpu_from_irq(unsigned irq); unsigned int cpu_from_evtchn(evtchn_port_t evtchn); static inline unsigned xen_evtchn_max_channels(void) @@ -89,17 +47,18 @@ static inline unsigned xen_evtchn_max_channels(void) * Do any ABI specific setup for a bound event channel before it can * be unmasked and used. */ -static inline int xen_evtchn_port_setup(struct irq_info *info) +static inline int xen_evtchn_port_setup(evtchn_port_t evtchn) { if (evtchn_ops->setup) - return evtchn_ops->setup(info); + return evtchn_ops->setup(evtchn); return 0; } -static inline void xen_evtchn_port_bind_to_cpu(struct irq_info *info, - unsigned cpu) +static inline void xen_evtchn_port_bind_to_cpu(evtchn_port_t evtchn, + unsigned int cpu, + unsigned int old_cpu) { - evtchn_ops->bind_to_cpu(info, cpu); + evtchn_ops->bind_to_cpu(evtchn, cpu, old_cpu); } static inline void clear_evtchn(evtchn_port_t port) @@ -132,9 +91,10 @@ static inline void unmask_evtchn(evtchn_port_t port) return evtchn_ops->unmask(port); } -static inline void xen_evtchn_handle_events(unsigned cpu) +static inline void xen_evtchn_handle_events(unsigned cpu, + struct evtchn_loop_ctrl *ctrl) { - return evtchn_ops->handle_events(cpu); + return evtchn_ops->handle_events(cpu, ctrl); } static inline void xen_evtchn_resume(void) |