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| author | Łukasz Gieryk <lukasz.gieryk@linux.intel.com> | 2022-02-17 18:44:52 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-03-06 05:08:23 -0500 |
| commit | 69387f4915afe4abe61c028cef30f56562d802a4 (patch) | |
| tree | eb62f290d592645f193d3524535bafbb5f8ac3d1 | |
| parent | 2503461691d3a781d3b9b54697955c3c1873af47 (diff) | |
| download | qemu-69387f4915afe4abe61c028cef30f56562d802a4.zip qemu-69387f4915afe4abe61c028cef30f56562d802a4.tar.gz qemu-69387f4915afe4abe61c028cef30f56562d802a4.tar.bz2 | |
pcie: Add a helper to the SR/IOV API
Convenience function for retrieving the PCIDevice object of the N-th VF.
Signed-off-by: Łukasz Gieryk <lukasz.gieryk@linux.intel.com>
Reviewed-by: Knut Omang <knuto@ifi.uio.no>
Message-Id: <20220217174504.1051716-4-lukasz.maniak@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/pci/pcie_sriov.c | 10 | ||||
| -rw-r--r-- | include/hw/pci/pcie_sriov.h | 6 |
2 files changed, 15 insertions, 1 deletions
diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c index 3f256d4..87abad6 100644 --- a/hw/pci/pcie_sriov.c +++ b/hw/pci/pcie_sriov.c @@ -287,8 +287,16 @@ uint16_t pcie_sriov_vf_number(PCIDevice *dev) return dev->exp.sriov_vf.vf_number; } - PCIDevice *pcie_sriov_get_pf(PCIDevice *dev) { return dev->exp.sriov_vf.pf; } + +PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n) +{ + assert(!pci_is_vf(dev)); + if (n < dev->exp.sriov_pf.num_vfs) { + return dev->exp.sriov_pf.vf[n]; + } + return NULL; +} diff --git a/include/hw/pci/pcie_sriov.h b/include/hw/pci/pcie_sriov.h index 990cff0..80f5c84 100644 --- a/include/hw/pci/pcie_sriov.h +++ b/include/hw/pci/pcie_sriov.h @@ -68,4 +68,10 @@ uint16_t pcie_sriov_vf_number(PCIDevice *dev); */ PCIDevice *pcie_sriov_get_pf(PCIDevice *dev); +/* + * Get the n-th VF of this physical function - only valid for PF. + * Returns NULL if index is invalid + */ +PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n); + #endif /* QEMU_PCIE_SRIOV_H */ |