From 0e6c9122a6ec96d19f1db61e9750287d86b6829c Mon Sep 17 00:00:00 2001 From: Wei Yang Date: Wed, 25 Mar 2015 16:23:44 +0800 Subject: PCI: Keep individual VF BAR size in struct pci_sriov Currently we don't store the individual VF BAR size. We calculate it when needed by dividing the PF's IOV resource size (which contains space for *all* the VFs) by total_VFs or by reading the BAR in the SR-IOV capability again. Keep the individual VF BAR size in struct pci_sriov.barsz[], add pci_iov_resource_size() to retrieve it, and use that instead of doing the division or reading the SR-IOV capability BAR. [bhelgaas: rename to "barsz[]", simplify barsz[] index computation, remove SR-IOV capability BAR sizing] Signed-off-by: Wei Yang Acked-by: Bjorn Helgaas Signed-off-by: Benjamin Herrenschmidt --- include/linux/pci.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/pci.h') diff --git a/include/linux/pci.h b/include/linux/pci.h index 211e9da8a7d7..15596582e575 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1675,6 +1675,7 @@ int pci_num_vf(struct pci_dev *dev); int pci_vfs_assigned(struct pci_dev *dev); int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); int pci_sriov_get_totalvfs(struct pci_dev *dev); +resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno); #else static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) { return -ENODEV; } @@ -1686,6 +1687,8 @@ static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) { return 0; } static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) { return 0; } +static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno) +{ return 0; } #endif #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) -- cgit v1.2.3