191cce756SDavid Woodhouse /* 291cce756SDavid Woodhouse * QEMU Xen emulation: Event channel support 391cce756SDavid Woodhouse * 491cce756SDavid Woodhouse * Copyright © 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved. 591cce756SDavid Woodhouse * 691cce756SDavid Woodhouse * Authors: David Woodhouse <dwmw2@infradead.org> 791cce756SDavid Woodhouse * 891cce756SDavid Woodhouse * This work is licensed under the terms of the GNU GPL, version 2 or later. 991cce756SDavid Woodhouse * See the COPYING file in the top-level directory. 1091cce756SDavid Woodhouse */ 1191cce756SDavid Woodhouse 1291cce756SDavid Woodhouse #ifndef QEMU_XEN_EVTCHN_H 1391cce756SDavid Woodhouse #define QEMU_XEN_EVTCHN_H 1491cce756SDavid Woodhouse 15ddf0fd9aSDavid Woodhouse #include "hw/sysbus.h" 16ddf0fd9aSDavid Woodhouse 17*794fba23SDavid Woodhouse typedef uint32_t evtchn_port_t; 18*794fba23SDavid Woodhouse 1991cce756SDavid Woodhouse void xen_evtchn_create(void); 20a15b1097SDavid Woodhouse int xen_evtchn_soft_reset(void); 2191cce756SDavid Woodhouse int xen_evtchn_set_callback_param(uint64_t param); 22ddf0fd9aSDavid Woodhouse void xen_evtchn_connect_gsis(qemu_irq *system_gsis); 23ddf0fd9aSDavid Woodhouse void xen_evtchn_set_callback_level(int level); 2491cce756SDavid Woodhouse 25b746a779SJoao Martins int xen_evtchn_set_port(uint16_t port); 26b746a779SJoao Martins 27*794fba23SDavid Woodhouse /* 28*794fba23SDavid Woodhouse * These functions mirror the libxenevtchn library API, providing the QEMU 29*794fba23SDavid Woodhouse * backend side of "interdomain" event channels. 30*794fba23SDavid Woodhouse */ 31*794fba23SDavid Woodhouse struct xenevtchn_handle; 32*794fba23SDavid Woodhouse struct xenevtchn_handle *xen_be_evtchn_open(void); 33*794fba23SDavid Woodhouse int xen_be_evtchn_bind_interdomain(struct xenevtchn_handle *xc, uint32_t domid, 34*794fba23SDavid Woodhouse evtchn_port_t guest_port); 35*794fba23SDavid Woodhouse int xen_be_evtchn_unbind(struct xenevtchn_handle *xc, evtchn_port_t port); 36*794fba23SDavid Woodhouse int xen_be_evtchn_close(struct xenevtchn_handle *xc); 37*794fba23SDavid Woodhouse int xen_be_evtchn_fd(struct xenevtchn_handle *xc); 38*794fba23SDavid Woodhouse int xen_be_evtchn_notify(struct xenevtchn_handle *xc, evtchn_port_t port); 39*794fba23SDavid Woodhouse int xen_be_evtchn_unmask(struct xenevtchn_handle *xc, evtchn_port_t port); 40*794fba23SDavid Woodhouse int xen_be_evtchn_pending(struct xenevtchn_handle *xc); 41*794fba23SDavid Woodhouse /* Apart from this which is a local addition */ 42*794fba23SDavid Woodhouse int xen_be_evtchn_get_guest_port(struct xenevtchn_handle *xc); 43*794fba23SDavid Woodhouse 444858ba20SDavid Woodhouse struct evtchn_status; 4583eb5811SDavid Woodhouse struct evtchn_close; 46190cc3c0SDavid Woodhouse struct evtchn_unmask; 47c723d4c1SDavid Woodhouse struct evtchn_bind_virq; 48f5417856SDavid Woodhouse struct evtchn_bind_ipi; 49cf7679abSDavid Woodhouse struct evtchn_send; 50e1db61b8SDavid Woodhouse struct evtchn_alloc_unbound; 5184327881SDavid Woodhouse struct evtchn_bind_interdomain; 5230667046SDavid Woodhouse struct evtchn_bind_vcpu; 53a15b1097SDavid Woodhouse struct evtchn_reset; 544858ba20SDavid Woodhouse int xen_evtchn_status_op(struct evtchn_status *status); 5583eb5811SDavid Woodhouse int xen_evtchn_close_op(struct evtchn_close *close); 56190cc3c0SDavid Woodhouse int xen_evtchn_unmask_op(struct evtchn_unmask *unmask); 57c723d4c1SDavid Woodhouse int xen_evtchn_bind_virq_op(struct evtchn_bind_virq *virq); 58f5417856SDavid Woodhouse int xen_evtchn_bind_ipi_op(struct evtchn_bind_ipi *ipi); 59cf7679abSDavid Woodhouse int xen_evtchn_send_op(struct evtchn_send *send); 60e1db61b8SDavid Woodhouse int xen_evtchn_alloc_unbound_op(struct evtchn_alloc_unbound *alloc); 6184327881SDavid Woodhouse int xen_evtchn_bind_interdomain_op(struct evtchn_bind_interdomain *interdomain); 6230667046SDavid Woodhouse int xen_evtchn_bind_vcpu_op(struct evtchn_bind_vcpu *vcpu); 63a15b1097SDavid Woodhouse int xen_evtchn_reset_op(struct evtchn_reset *reset); 644858ba20SDavid Woodhouse 6591cce756SDavid Woodhouse #endif /* QEMU_XEN_EVTCHN_H */ 66