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events_internal.h


products/Sources/formale Sprachen/C/Linux/drivers/xen/events/events_internal.h

/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Xen Event Channels (internal header) * * Copyright (C) 2013 Citrix Systems R&D Ltd. */ #ifndef __EVENTS_INTERNAL_H__ #define __EVENTS_INTERNAL_H__ struct evtchn_loop_ctrl; struct evtchn_ops { unsigned (*max_channels)(void); unsigned (*nr_channels)(void); 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)(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, 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; void handle_irq_for_port(evtchn_port_t port, struct evtchn_loop_ctrl *ctrl); unsigned int cpu_from_evtchn(evtchn_port_t evtchn); static inline unsigned xen_evtchn_max_channels(void) { return evtchn_ops->max_channels(); } /* * Do any ABI specific setup for a bound event channel before it can * be unmasked and used. */ static inline int xen_evtchn_port_setup(evtchn_port_t evtchn) { if (evtchn_ops->setup) return evtchn_ops->setup(evtchn); return 0; } static inline void xen_evtchn_port_remove(evtchn_port_t evtchn, unsigned int cpu) { if (evtchn_ops->remove) evtchn_ops->remove(evtchn, 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(evtchn, cpu, old_cpu); } static inline void clear_evtchn(evtchn_port_t port) { evtchn_ops->clear_pending(port); } static inline void set_evtchn(evtchn_port_t port) { evtchn_ops->set_pending(port); } static inline bool test_evtchn(evtchn_port_t port) { return evtchn_ops->is_pending(port); } static inline void mask_evtchn(evtchn_port_t port) { return evtchn_ops->mask(port); } static inline void unmask_evtchn(evtchn_port_t port) { return evtchn_ops->unmask(port); } static inline void xen_evtchn_handle_events(unsigned cpu, struct evtchn_loop_ctrl *ctrl) { return evtchn_ops->handle_events(cpu, ctrl); } static inline void xen_evtchn_resume(void) { if (evtchn_ops->resume) evtchn_ops->resume(); } void xen_evtchn_2l_init(void); int xen_evtchn_fifo_init(void); #endif /* #ifndef __EVENTS_INTERNAL_H__ */

                                                                                                                                                                                                                                                                                                                                                                                                     

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