1.\" 2.\" Copyright (c) 2014 Sandvine Inc. 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd May 28, 2015 29.Dt PCI_IOV_INIT 9 30.Os 31.Sh NAME 32.Nm PCI_IOV_INIT 33.Nd enable SR-IOV on a PF device 34.Sh SYNOPSIS 35.In sys/bus.h 36.In machine/stdarg.h 37.In sys/nv.h 38.In dev/pci/pci_iov.h 39.Ft int 40.Fn PCI_IOV_INIT "device_t dev" "uint16_t num_vfs" "const nvlist_t *pf_config" 41.Sh DESCRIPTION 42The 43.Fn PCI_IOV_INIT 44method is called by the PCI Single-Root I/O Virtualization (SR-IOV) 45infrastucture when the user requests that SR-IOV be enabled on a Physical 46Function (PF). 47The number of Virtual Functions (VFs) that will be created is passed to this 48method in the 49.Fa num_vfs 50argument. 51.Pp 52If the driver requested device-specific PF configuration parameters via a PF 53schema in its call to 54.Xr pci_iov_attach 9 , 55those parameters will be available in the 56.Fa pf_config 57argument. 58All configuration parameters that were either set as required parameters or that 59had a default value set in the PF schema are guaranteed to be present in 60.Fa pf_config . 61Configuration parameters that were neither set as required nor were given a 62default value are optional and may or may not be present in 63.Fa pf_config . 64.Fa pf_config 65will not contain any configuration parameters that were not specified in the PF 66schema. 67All configuration parameters will have the correct type and are in the range of 68valid values specified in the schema. 69.Pp 70If this method returns successfully, then this method will not be called again 71on the same device until after a call to 72.Xr PCI_IOV_UNINIT 9 . 73.Sh RETURN VALUES 74Returns 0 on success, otherwise an appropriate error is returned. 75If this method returns an error then the SR-IOV configuration will be aborted 76and no VFs will be created. 77.Sh SEE ALSO 78.Xr nv 9 , 79.Xr pci 9 , 80.Xr PCI_IOV_ADD_VF 9 , 81.Xr pci_iov_schema 9 , 82.Xr PCI_IOV_UNINIT 9 83.Sh AUTHORS 84This manual page was written by 85.An Ryan Stone Aq Mt rstone@FreeBSD.org . 86