xen/interface/event_channel.h

1 /* SPDX-License-Identifier: MIT */
7  * Copyright (c) 2003-2004, K A Fraser.
26  * guests must check the value of the bit after re-enabling event
41  * @cmd  == EVTCHNOP_* (event-channel operation).
42  * @args == struct evtchn_* Operation-specific extra arguments (NULL if none).
96  * handler) is as follows: (Re-enable the event channel for subsequent
117  *  1. Virtual IRQs are classified as per-vcpu or global. See the VIRQ list
120  *     re-bound via EVTCHNOP_bind_vcpu.
121  *  3. Per-vcpu VIRQs may be bound to at most one event channel per vcpu.
138  *  2. Only a sufficiently-privileged domain may bind to a physical IRQ.
165  * interdomain then the remote end is placed in the unbound state
175  * EVTCHNOP_send: Send an event to the remote end of the channel whose local
176  * endpoint is <port>.
186  * has an endpoint at <dom, port>.
189  *  2. Only a sufficiently-privileged domain may obtain the status of an event
199 #define EVTCHNSTAT_interdomain  2  /* Channel is connected to remote domain. */
223  *  1. IPI-bound channels always notify the vcpu specified at bind time.
225  *  2. Per-VCPU VIRQ channels always notify the vcpu specified at bind time.
239  * EVTCHNOP_unmask: Unmask the specified local event-channel port and deliver
252  *  2. Only a sufficiently-privileged domain may specify other than DOMID_SELF.
254  *     operations to 2-level ABI if called with <dom> == DOMID_SELF and FIFO
326  * 2-level ABI
350 #define EVTCHN_FIFO_LINK_MASK ((1 << EVTCHN_FIFO_LINK_BITS) - 1)
366  * c-file-style: "BSD"
367  * c-basic-offset: 4
368  * tab-width: 4
369  * indent-tabs-mode: nil