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Commit d3881e50 authored by Keith Busch's avatar Keith Busch Committed by Bjorn Helgaas
Browse files

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: default avatarKrishna Dhulipala <krishnad@fb.com>
Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarWei Zhang <wzhang@fb.com>
parent c1ae3cfa

drivers/pci/access.c

+38 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/pci.h

+6 −26
Original line number Diff line number Diff line
@@ -940,32 +940,12 @@ int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn, 


struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops);



static inline 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);

}

static inline 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);

}

static inline 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);

}

static inline 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);

}

static inline 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);

}

static inline 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);

}

int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val);

int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val);

int pci_read_config_dword(const struct pci_dev *dev, int where, u32 *val);

int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val);

int pci_write_config_word(const struct pci_dev *dev, int where, u16 val);

int pci_write_config_dword(const struct pci_dev *dev, int where, u32 val);



int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val);

int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val);