PCI_IOV_INIT(9) FreeBSD Kernel Developer's Manual PCI_IOV_INIT(9)
NAME
PCI_IOV_INIT - enable SR-IOV on a PF device
SYNOPSIS
#include <sys/bus.h>
#include <machine/stdarg.h>
#include <sys/nv.h>
#include <dev/pci/pci_iov.h>
int
PCI_IOV_INIT(device_t dev, uint16_t num_vfs, const nvlist_t *pf_config);
DESCRIPTION
The PCI_IOV_INIT() method is called by the PCI Single-Root I/O
Virtualization (SR-IOV) infrastructure when the user requests that SR-IOV
be enabled on a Physical Function (PF). The number of Virtual Functions
(VFs) that will be created is passed to this method in the num_vfs
argument.
If the driver requested device-specific PF configuration parameters via a
PF schema in its call to pci_iov_attach(9), those parameters will be
available in the pf_config argument. All configuration parameters that
were either set as required parameters or that had a default value set in
the PF schema are guaranteed to be present in pf_config. Configuration
parameters that were neither set as required nor were given a default
value are optional and may or may not be present in pf_config. pf_config
will not contain any configuration parameters that were not specified in
the PF schema. All configuration parameters will have the correct type
and are in the range of valid values specified in the schema.
If this method returns successfully, then this method will not be called
again on the same device until after a call to PCI_IOV_UNINIT(9).
RETURN VALUES
Returns 0 on success, otherwise an appropriate error is returned. If
this method returns an error then the SR-IOV configuration will be
aborted and no VFs will be created.
SEE ALSO
nv(9), pci(9), PCI_IOV_ADD_VF(9), pci_iov_schema(9), PCI_IOV_UNINIT(9)
AUTHORS
This manual page was written by Ryan Stone <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 May 28, 2015 FreeBSD 14.1-RELEASE-p8