[RFC 1/2] PCI: Expose iov_set_numvfs and iov_resource_size for modules.

[Ilya Lesokhin <ilyal@xxxxxxxxxxxx>]

Expose iov_set_numvfs and iov_resource_size to make them available
for VFIO-PCI sriov support.

Signed-off-by: Ilya Lesokhin <ilyal@xxxxxxxxxxxx>
Signed-off-by: Noa Osherovich <noaos@xxxxxxxxxxxx>
Signed-off-by: Haggai Eran <haggaie@xxxxxxxxxxxx>
---
 drivers/pci/iov.c   | 4 +++-
 include/linux/pci.h | 4 ++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index ee0ebff..f296bd3 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -41,7 +41,7 @@ int pci_iov_virtfn_devfn(struct pci_dev *dev, int vf_id)
  *
  * Update iov->offset and iov->stride when NumVFs is written.
  */
-static inline void pci_iov_set_numvfs(struct pci_dev *dev, int nr_virtfn)
+inline void pci_iov_set_numvfs(struct pci_dev *dev, int nr_virtfn)
 {
 	struct pci_sriov *iov = dev->sriov;
 
@@ -49,6 +49,7 @@ static inline void pci_iov_set_numvfs(struct pci_dev *dev, int nr_virtfn)
 	pci_read_config_word(dev, iov->pos + PCI_SRIOV_VF_OFFSET, &iov->offset);
 	pci_read_config_word(dev, iov->pos + PCI_SRIOV_VF_STRIDE, &iov->stride);
 }
+EXPORT_SYMBOL(pci_iov_set_numvfs);
 
 /*
  * The PF consumes one bus number.  NumVFs, First VF Offset, and VF Stride
@@ -107,6 +108,7 @@ resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno)
 
 	return dev->sriov->barsz[resno - PCI_IOV_RESOURCES];
 }
+EXPORT_SYMBOL(pci_iov_resource_size);
 
 static int virtfn_add(struct pci_dev *dev, int id, int reset)
 {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index e90eb22..1039e18 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1724,6 +1724,8 @@ int pci_vfs_assigned(struct pci_dev *dev);
 int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
 int pci_sriov_get_totalvfs(struct pci_dev *dev);
 resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno);
+
+void pci_iov_set_numvfs(struct pci_dev *dev, int nr_virtfn);
 #else
 static inline int pci_iov_virtfn_bus(struct pci_dev *dev, int id)
 {
@@ -1745,6 +1747,8 @@ static inline int pci_sriov_get_totalvfs(struct pci_dev *dev)
 { return 0; }
 static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno)
 { return 0; }
+
+void pci_iov_set_numvfs(struct pci_dev *dev, int nr_virtfn) { }
 #endif
 
 #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)
-- 
1.8.3.1

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