1 files changed, 57 insertions, 4 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index df3644132617..a7fe4bbd7ff1 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -52,6 +52,7 @@
 #include <asm/atomic.h>
 #include <linux/device.h>
 #include <linux/io.h>
+#include <linux/irqreturn.h>
 
 /* Include the ID list */
 #include <linux/pci_ids.h>
@@ -93,6 +94,12 @@ 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 +187,7 @@ 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 +265,8 @@ struct pci_dev {
         unsigned int    is_managed:1;
         unsigned int    is_pcie:1;
         unsigned int    state_saved:1;
+        unsigned int    is_physfn:1;
+        unsigned int    is_virtfn:1;
         pci_dev_flags_t dev_flags;
         atomic_t        enable_cnt;     /* pci_enable_device has been called */
 
@@ -270,6 +280,12 @@ struct pci_dev {
         struct list_head msi_list;
 #endif
         struct pci_vpd *vpd;
+#ifdef CONFIG_PCI_IOV
+        union {
+                struct pci_sriov *sriov;        /* SR-IOV capability related */
+                struct pci_dev *physfn; /* the PF this VF is associated with */
+        };
+#endif
 };
 
 extern struct pci_dev *alloc_pci_dev(void);
@@ -341,6 +357,15 @@ struct pci_bus {
 #define pci_bus_b(n)    list_entry(n, struct pci_bus, node)
 #define to_pci_bus(n)   container_of(n, struct pci_bus, dev)
 
+/*
+ * Returns true if the pci bus is root (behind host-pci bridge),
+ * false otherwise
+ */
+static inline bool pci_is_root_bus(struct pci_bus *pbus)
+{
+        return !(pbus->parent);
+}
+
 #ifdef CONFIG_PCI_MSI
 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
 {
@@ -528,7 +553,7 @@ void pcibios_update_irq(struct pci_dev *, int irq);
 /* Generic PCI functions used internally */
 
 extern struct pci_bus *pci_find_bus(int domain, int busnr);
-void pci_bus_add_devices(struct pci_bus *bus);
+void pci_bus_add_devices(const struct pci_bus *bus);
 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
                                       struct pci_ops *ops, void *sysdata);
 static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
@@ -702,6 +727,9 @@ int pci_back_from_sleep(struct pci_dev *dev);
 
 /* Functions for PCI Hotplug drivers to use */
 int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
+#ifdef CONFIG_HOTPLUG
+unsigned int pci_rescan_bus(struct pci_bus *bus);
+#endif
 
 /* Vital product data routines */
 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
@@ -709,7 +737,7 @@ ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void
 int pci_vpd_truncate(struct pci_dev *dev, size_t size);
 
 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
-void pci_bus_assign_resources(struct pci_bus *bus);
+void pci_bus_assign_resources(const struct pci_bus *bus);
 void pci_bus_size_bridges(struct pci_bus *bus);
 int pci_claim_resource(struct pci_dev *, int);
 void pci_assign_unassigned_resources(void);
@@ -790,7 +818,7 @@ struct msix_entry {
 
 
 #ifndef CONFIG_PCI_MSI
-static inline int pci_enable_msi(struct pci_dev *dev)
+static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec)
 {
         return -1;
 }
@@ -800,6 +828,10 @@ static inline void pci_msi_shutdown(struct pci_dev *dev)
 static inline void pci_disable_msi(struct pci_dev *dev)
 { }
 
+static inline int pci_msix_table_size(struct pci_dev *dev)
+{
+        return 0;
+}
 static inline int pci_enable_msix(struct pci_dev *dev,
                                   struct msix_entry *entries, int nvec)
 {
@@ -821,9 +853,10 @@ static inline int pci_msi_enabled(void)
         return 0;
 }
 #else
-extern int pci_enable_msi(struct pci_dev *dev);
+extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec);
 extern void pci_msi_shutdown(struct pci_dev *dev);
 extern void pci_disable_msi(struct pci_dev *dev);
+extern int pci_msix_table_size(struct pci_dev *dev);
 extern int pci_enable_msix(struct pci_dev *dev,
         struct msix_entry *entries, int nvec);
 extern void pci_msix_shutdown(struct pci_dev *dev);
@@ -842,6 +875,8 @@ static inline int pcie_aspm_enabled(void)
 extern int pcie_aspm_enabled(void);
 #endif
 
+#define pci_enable_msi(pdev)    pci_enable_msi_block(pdev, 1)
+
 #ifdef CONFIG_HT_IRQ
 /* The functions a driver should call */
 int  ht_create_irq(struct pci_dev *dev, int idx);
@@ -1195,5 +1230,23 @@ int pci_ext_cfg_avail(struct pci_dev *dev);
 
 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
 
+#ifdef CONFIG_PCI_IOV
+extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
+extern void pci_disable_sriov(struct pci_dev *dev);
+extern irqreturn_t pci_sriov_migration(struct pci_dev *dev);
+#else
+static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
+{
+        return -ENODEV;
+}
+static inline void pci_disable_sriov(struct pci_dev *dev)
+{
+}
+static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev)
+{
+        return IRQ_NONE;
+}
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* LINUX_PCI_H */