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.Dd May 28, 2015 27.Dt PCI_IOV_INIT 9 28.Os 29.Sh NAME 30.Nm PCI_IOV_INIT 31.Nd enable SR-IOV on a PF device 32.Sh SYNOPSIS 33.In sys/bus.h 34.In machine/stdarg.h 35.In sys/nv.h 36.In dev/pci/pci_iov.h 37.Ft int 38.Fn PCI_IOV_INIT "device_t dev" "uint16_t num_vfs" "const nvlist_t *pf_config" 39.Sh DESCRIPTION 40The 41.Fn PCI_IOV_INIT 42method is called by the PCI Single-Root I/O Virtualization (SR-IOV) 43infrastructure when the user requests that SR-IOV be enabled on a Physical 44Function (PF). 45The number of Virtual Functions (VFs) that will be created is passed to this 46method in the 47.Fa num_vfs 48argument. 49.Pp 50If the driver requested device-specific PF configuration parameters via a PF 51schema in its call to 52.Xr pci_iov_attach 9 , 53those parameters will be available in the 54.Fa pf_config 55argument. 56All configuration parameters that were either set as required parameters or that 57had a default value set in the PF schema are guaranteed to be present in 58.Fa pf_config . 59Configuration parameters that were neither set as required nor were given a 60default value are optional and may or may not be present in 61.Fa pf_config . 62.Fa pf_config 63will not contain any configuration parameters that were not specified in the PF 64schema. 65All configuration parameters will have the correct type and are in the range of 66valid values specified in the schema. 67.Pp 68If this method returns successfully, then this method will not be called again 69on the same device until after a call to 70.Xr PCI_IOV_UNINIT 9 . 71.Sh RETURN VALUES 72Returns 0 on success, otherwise an appropriate error is returned. 73If this method returns an error then the SR-IOV configuration will be aborted 74and no VFs will be created. 75.Sh SEE ALSO 76.Xr nv 9 , 77.Xr pci 9 , 78.Xr PCI_IOV_ADD_VF 9 , 79.Xr pci_iov_schema 9 , 80.Xr PCI_IOV_UNINIT 9 81.Sh AUTHORS 82This manual page was written by 83.An Ryan Stone Aq Mt rstone@FreeBSD.org . 84