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authorWei Yang <weiyang@linux.vnet.ibm.com>2015-03-25 16:23:44 +0800
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2015-03-31 13:02:35 +1100
commit0e6c9122a6ec96d19f1db61e9750287d86b6829c (patch)
tree8bcf0dad431a260735d35172fd336c09185a74f3 /drivers/pci/pci.h
parente88ae01d2c43be3c3a6f340bfa7bab8b87127f57 (diff)
downloadlinux-0e6c9122a6ec96d19f1db61e9750287d86b6829c.tar.bz2
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 <weiyang@linux.vnet.ibm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/pci/pci.h')
-rw-r--r--drivers/pci/pci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 4091f82239cd..57329645dd01 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -247,6 +247,7 @@ struct pci_sriov {
struct pci_dev *dev; /* lowest numbered PF */
struct pci_dev *self; /* this PF */
struct mutex lock; /* lock for VF bus */
+ resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
};
#ifdef CONFIG_PCI_ATS