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| author | Wei Yang <weiyang@linux.vnet.ibm.com> | 2015-03-25 16:23:44 +0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2015-03-31 13:02:35 +1100 |
| commit | 0e6c9122a6ec96d19f1db61e9750287d86b6829c (patch) | |
| tree | 8bcf0dad431a260735d35172fd336c09185a74f3 /drivers/pci/pci.h | |
| parent | e88ae01d2c43be3c3a6f340bfa7bab8b87127f57 (diff) | |
| download | lwn-0e6c9122a6ec96d19f1db61e9750287d86b6829c.tar.gz lwn-0e6c9122a6ec96d19f1db61e9750287d86b6829c.zip | |
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.h | 1 |
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 |