PCI: Export PCI device config accessors

Replace the inline PCI device config read and write accessors with exported
functions.  This is preparing for these functions to make use of private
data.

Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Wei Zhang <wzhang@fb.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 8b7382705bf2..c70e3113df7a 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -890,3 +890,41 @@ int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos,
 	return ret;
 }
 EXPORT_SYMBOL(pcie_capability_clear_and_set_dword);
+
+int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val)
+{
+	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
+}
+EXPORT_SYMBOL(pci_read_config_byte);
+
+int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val)
+{
+	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
+}
+EXPORT_SYMBOL(pci_read_config_word);
+
+int pci_read_config_dword(const struct pci_dev *dev, int where,
+					u32 *val)
+{
+	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
+}
+EXPORT_SYMBOL(pci_read_config_dword);
+
+int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val)
+{
+	return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
+}
+EXPORT_SYMBOL(pci_write_config_byte);
+
+int pci_write_config_word(const struct pci_dev *dev, int where, u16 val)
+{
+	return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
+}
+EXPORT_SYMBOL(pci_write_config_word);
+
+int pci_write_config_dword(const struct pci_dev *dev, int where,
+					 u32 val)
+{
+	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
+}
+EXPORT_SYMBOL(pci_write_config_dword);