diff options
Diffstat (limited to 'drivers/xen/events/events_internal.h')
-rw-r--r-- | drivers/xen/events/events_internal.h | 114 |
1 files changed, 38 insertions, 76 deletions
diff --git a/drivers/xen/events/events_internal.h b/drivers/xen/events/events_internal.h index 82938cff6c7a..4d3398eff9cd 100644 --- a/drivers/xen/events/events_internal.h +++ b/drivers/xen/events/events_internal.h @@ -7,78 +7,36 @@ #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; - unsigned int 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 (*remove)(evtchn_port_t port, unsigned int cpu); + void (*bind_to_cpu)(evtchn_port_t evtchn, unsigned int cpu, + unsigned int old_cpu); - void (*clear_pending)(unsigned port); - void (*set_pending)(unsigned port); - bool (*is_pending)(unsigned port); - bool (*test_and_set_mask)(unsigned port); - void (*mask)(unsigned port); - void (*unmask)(unsigned port); + void (*clear_pending)(evtchn_port_t port); + void (*set_pending)(evtchn_port_t port); + bool (*is_pending)(evtchn_port_t port); + 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(unsigned int evtchn); +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 cpu_from_evtchn(unsigned int evtchn); +unsigned int cpu_from_evtchn(evtchn_port_t evtchn); static inline unsigned xen_evtchn_max_channels(void) { @@ -89,52 +47,56 @@ 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_remove(evtchn_port_t evtchn, + unsigned int cpu) { - evtchn_ops->bind_to_cpu(info, cpu); + if (evtchn_ops->remove) + evtchn_ops->remove(evtchn, cpu); } -static inline void clear_evtchn(unsigned port) +static inline void xen_evtchn_port_bind_to_cpu(evtchn_port_t evtchn, + unsigned int cpu, + unsigned int old_cpu) { - evtchn_ops->clear_pending(port); + evtchn_ops->bind_to_cpu(evtchn, cpu, old_cpu); } -static inline void set_evtchn(unsigned port) +static inline void clear_evtchn(evtchn_port_t port) { - evtchn_ops->set_pending(port); + evtchn_ops->clear_pending(port); } -static inline bool test_evtchn(unsigned port) +static inline void set_evtchn(evtchn_port_t port) { - return evtchn_ops->is_pending(port); + evtchn_ops->set_pending(port); } -static inline bool test_and_set_mask(unsigned port) +static inline bool test_evtchn(evtchn_port_t port) { - return evtchn_ops->test_and_set_mask(port); + return evtchn_ops->is_pending(port); } -static inline void mask_evtchn(unsigned port) +static inline void mask_evtchn(evtchn_port_t port) { return evtchn_ops->mask(port); } -static inline void unmask_evtchn(unsigned port) +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) |