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// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library zx;
protocol msi {
/// Allocate Message-Signaled Interrupts (MSIs).
/// Rights: handle must have resource kind ZX_RSRC_KIND_ROOT.
msi_allocate(resource struct {
handle handle:RESOURCE;
count uint32;
}) -> (resource struct {
status status;
out_allocation handle;
/// Create an Interrupt object from a Messaged-Signaled Interrupt (MSI) allocation.
/// Rights: handle must be of type ZX_OBJ_TYPE_MSI.
/// Rights: vmo must be of type ZX_OBJ_TYPE_VMO.
/// Rights: vmo must have ZX_RIGHT_MAP.
msi_create(resource struct {
handle handle;
options uint32;
msi_id uint32;
vmo handle:VMO;
vmo_offset usize;
}) -> (resource struct {
status status;
out_interrupt handle;