PCI: initialize and release SR-IOV capability

If a device has the SR-IOV capability, initialize it (set the ARI
Capable Hierarchy in the lowest numbered PF if necessary; calculate
the System Page Size for the VF MMIO, probe the VF Offset, Stride
and BARs). A lock for the VF bus allocation is also initialized if
a PF is the lowest numbered PF.

Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 1f6c5ddaae36..8ce2f2d9ab63 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -93,6 +93,12 @@ enum {
         /* #6: expansion ROM resource */
         PCI_ROM_RESOURCE,
 
+        /* device specific resources */
+#ifdef CONFIG_PCI_IOV
+        PCI_IOV_RESOURCES,
+        PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,
+#endif
+
         /* resources assigned to buses behind the bridge */
 #define PCI_BRIDGE_RESOURCE_NUM 4
 
@@ -180,6 +186,7 @@ struct pci_cap_saved_state {
 
 struct pcie_link_state;
 struct pci_vpd;
+struct pci_sriov;
 
 /*
  * The pci_dev structure is used to describe PCI devices.
@@ -257,6 +264,7 @@ struct pci_dev {
         unsigned int    is_managed:1;
         unsigned int    is_pcie:1;
         unsigned int    state_saved:1;
+        unsigned int    is_physfn:1;
         pci_dev_flags_t dev_flags;
         atomic_t        enable_cnt;     /* pci_enable_device has been called */
 
@@ -270,6 +278,9 @@ struct pci_dev {
         struct list_head msi_list;
 #endif
         struct pci_vpd *vpd;
+#ifdef CONFIG_PCI_IOV
+        struct pci_sriov *sriov;        /* SR-IOV capability related */
+#endif
 };
 
 extern struct pci_dev *alloc_pci_dev(void);