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authorWilliams, Mitch A <mitch.a.williams@intel.com>2010-02-10 04:43:04 +0300
committerDavid S. Miller <davem@davemloft.net>2010-02-13 03:56:07 +0300
commitfb8a0d9d1bfd1e4355f307e86a6da7209eefd5f3 (patch)
tree99f23a4bc7c51343619f63970e5d017d75b5a66f /include/linux/pci.h
parent81d54ec8479a2c695760da81f05b5a9fb2dbe40a (diff)
downloadlinux-fb8a0d9d1bfd1e4355f307e86a6da7209eefd5f3.tar.xz
pci: Add SR-IOV convenience functions and macros
Add and export pci_num_vf to allow other subsystems to determine how many virtual function devices are associated with an SR-IOV physical function device. Add macros dev_is_pci, dev_is_ps, and dev_num_vf to make it easier for non-PCI specific code to determine SR-IOV capabilities. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 174e5392e51e..59a98e2ee2c6 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -612,6 +612,9 @@ extern void pci_remove_bus_device(struct pci_dev *dev);
extern void pci_stop_bus_device(struct pci_dev *dev);
void pci_setup_cardbus(struct pci_bus *bus);
extern void pci_sort_breadthfirst(void);
+#define dev_is_pci(d) ((d)->bus == &pci_bus_type)
+#define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
+#define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0))
/* Generic PCI functions exported to card drivers */
@@ -1129,6 +1132,9 @@ static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
unsigned int devfn)
{ return NULL; }
+#define dev_is_pci(d) (false)
+#define dev_is_pf(d) (false)
+#define dev_num_vf(d) (0)
#endif /* CONFIG_PCI */
/* Include architecture-dependent settings and functions */
@@ -1286,6 +1292,7 @@ void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
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);
+extern int pci_num_vf(struct pci_dev *dev);
#else
static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
{
@@ -1298,6 +1305,10 @@ static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev)
{
return IRQ_NONE;
}
+static inline int pci_num_vf(struct pci_dev *dev)
+{
+ return 0;
+}
#endif
#if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)