1.\" $NetBSD: interrupt_distribute.9,v 1.2 2016/07/06 09:20:42 abhinav Exp $ 2.\" 3.\" Copyright (c) 2015 Internet Initiative Japan Inc. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd August 17, 2015 28.Dt INTERRUPT_DISTRIBUTE 9 29.Os 30.Sh NAME 31.Nm interrupt_distribute 32.Nd assign an interrupt to a CPU 33.Sh SYNOPSIS 34.In sys/interrupt.h 35.Ft int 36.Fn interrupt_distribute "void *ich" "const kcpuset_t *newset" \ 37"kcpuset_t *oldset" 38.Sh DESCRIPTION 39The 40.Nm 41function exists to assign an interrupt to a CPU. 42.Pp 43If a driver (or the other kernel component) wishes to assign an 44interrupt to a CPU, it should pass an interrupt handler such as 45the return value of 46.Fn pci_intr_establish 47as 48.Fa ich 49argument, and it should pass the kcpuset to which it should be 50assigned as 51.Fa newset . 52To get the previous value, pass a 53.Pf non- Dv NULL 54value to 55.Ft oldset . 56