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 17794fba23SDavid Woodhouse typedef uint32_t evtchn_port_t; 18794fba23SDavid Woodhouse 19*eeedfe6cSDavid Woodhouse void xen_evtchn_create(unsigned int nr_gsis, qemu_irq *system_gsis); 20a15b1097SDavid Woodhouse int xen_evtchn_soft_reset(void); 2191cce756SDavid Woodhouse int xen_evtchn_set_callback_param(uint64_t param); 22ddf0fd9aSDavid Woodhouse void xen_evtchn_set_callback_level(int level); 2391cce756SDavid Woodhouse 24b746a779SJoao Martins int xen_evtchn_set_port(uint16_t port); 25b746a779SJoao Martins 264f81baa3SDavid Woodhouse bool xen_evtchn_set_gsi(int gsi, int level); 276096cf78SDavid Woodhouse void xen_evtchn_snoop_msi(PCIDevice *dev, bool is_msix, unsigned int vector, 286096cf78SDavid Woodhouse uint64_t addr, uint32_t data, bool is_masked); 296096cf78SDavid Woodhouse void xen_evtchn_remove_pci_device(PCIDevice *dev); 306096cf78SDavid Woodhouse struct kvm_irq_routing_entry; 316096cf78SDavid Woodhouse int xen_evtchn_translate_pirq_msi(struct kvm_irq_routing_entry *route, 326096cf78SDavid Woodhouse uint64_t address, uint32_t data); 336096cf78SDavid Woodhouse bool xen_evtchn_deliver_pirq_msi(uint64_t address, uint32_t data); 346096cf78SDavid Woodhouse 354f81baa3SDavid Woodhouse 36794fba23SDavid Woodhouse /* 37794fba23SDavid Woodhouse * These functions mirror the libxenevtchn library API, providing the QEMU 38794fba23SDavid Woodhouse * backend side of "interdomain" event channels. 39794fba23SDavid Woodhouse */ 40794fba23SDavid Woodhouse struct xenevtchn_handle; 41794fba23SDavid Woodhouse struct xenevtchn_handle *xen_be_evtchn_open(void); 42794fba23SDavid Woodhouse int xen_be_evtchn_bind_interdomain(struct xenevtchn_handle *xc, uint32_t domid, 43794fba23SDavid Woodhouse evtchn_port_t guest_port); 44794fba23SDavid Woodhouse int xen_be_evtchn_unbind(struct xenevtchn_handle *xc, evtchn_port_t port); 45794fba23SDavid Woodhouse int xen_be_evtchn_close(struct xenevtchn_handle *xc); 46794fba23SDavid Woodhouse int xen_be_evtchn_fd(struct xenevtchn_handle *xc); 47794fba23SDavid Woodhouse int xen_be_evtchn_notify(struct xenevtchn_handle *xc, evtchn_port_t port); 48794fba23SDavid Woodhouse int xen_be_evtchn_unmask(struct xenevtchn_handle *xc, evtchn_port_t port); 49794fba23SDavid Woodhouse int xen_be_evtchn_pending(struct xenevtchn_handle *xc); 50794fba23SDavid Woodhouse /* Apart from this which is a local addition */ 51794fba23SDavid Woodhouse int xen_be_evtchn_get_guest_port(struct xenevtchn_handle *xc); 52794fba23SDavid Woodhouse 534858ba20SDavid Woodhouse struct evtchn_status; 5483eb5811SDavid Woodhouse struct evtchn_close; 55190cc3c0SDavid Woodhouse struct evtchn_unmask; 56c723d4c1SDavid Woodhouse struct evtchn_bind_virq; 57aa98ee38SDavid Woodhouse struct evtchn_bind_pirq; 58f5417856SDavid Woodhouse struct evtchn_bind_ipi; 59cf7679abSDavid Woodhouse struct evtchn_send; 60e1db61b8SDavid Woodhouse struct evtchn_alloc_unbound; 6184327881SDavid Woodhouse struct evtchn_bind_interdomain; 6230667046SDavid Woodhouse struct evtchn_bind_vcpu; 63a15b1097SDavid Woodhouse struct evtchn_reset; 644858ba20SDavid Woodhouse int xen_evtchn_status_op(struct evtchn_status *status); 6583eb5811SDavid Woodhouse int xen_evtchn_close_op(struct evtchn_close *close); 66190cc3c0SDavid Woodhouse int xen_evtchn_unmask_op(struct evtchn_unmask *unmask); 67c723d4c1SDavid Woodhouse int xen_evtchn_bind_virq_op(struct evtchn_bind_virq *virq); 68aa98ee38SDavid Woodhouse int xen_evtchn_bind_pirq_op(struct evtchn_bind_pirq *pirq); 69f5417856SDavid Woodhouse int xen_evtchn_bind_ipi_op(struct evtchn_bind_ipi *ipi); 70cf7679abSDavid Woodhouse int xen_evtchn_send_op(struct evtchn_send *send); 71e1db61b8SDavid Woodhouse int xen_evtchn_alloc_unbound_op(struct evtchn_alloc_unbound *alloc); 7284327881SDavid Woodhouse int xen_evtchn_bind_interdomain_op(struct evtchn_bind_interdomain *interdomain); 7330667046SDavid Woodhouse int xen_evtchn_bind_vcpu_op(struct evtchn_bind_vcpu *vcpu); 74a15b1097SDavid Woodhouse int xen_evtchn_reset_op(struct evtchn_reset *reset); 754858ba20SDavid Woodhouse 76799c2354SDavid Woodhouse struct physdev_map_pirq; 77799c2354SDavid Woodhouse struct physdev_unmap_pirq; 78799c2354SDavid Woodhouse struct physdev_eoi; 79799c2354SDavid Woodhouse struct physdev_irq_status_query; 80799c2354SDavid Woodhouse struct physdev_get_free_pirq; 81799c2354SDavid Woodhouse int xen_physdev_map_pirq(struct physdev_map_pirq *map); 82799c2354SDavid Woodhouse int xen_physdev_unmap_pirq(struct physdev_unmap_pirq *unmap); 83799c2354SDavid Woodhouse int xen_physdev_eoi_pirq(struct physdev_eoi *eoi); 84799c2354SDavid Woodhouse int xen_physdev_query_pirq(struct physdev_irq_status_query *query); 85799c2354SDavid Woodhouse int xen_physdev_get_free_pirq(struct physdev_get_free_pirq *get); 86799c2354SDavid Woodhouse 8791cce756SDavid Woodhouse #endif /* QEMU_XEN_EVTCHN_H */ 88