From 69387f4915afe4abe61c028cef30f56562d802a4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C5=81ukasz=20Gieryk?= Date: Thu, 17 Feb 2022 18:44:52 +0100 Subject: [PATCH] pcie: Add a helper to the SR/IOV API MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Convenience function for retrieving the PCIDevice object of the N-th VF. Signed-off-by: Łukasz Gieryk Reviewed-by: Knut Omang Message-Id: <20220217174504.1051716-4-lukasz.maniak@linux.intel.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/pci/pcie_sriov.c | 10 +++++++++- include/hw/pci/pcie_sriov.h | 6 ++++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c index 3f256d483f..87abad6ac8 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 990cff0a1c..80f5c84e75 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 */