PCI Support

Functions
L4_CV int	l4io_pci_find_slot (unsigned int bus, unsigned int slot, l4io_pci_dev_t *pci_dev)
	Find PCI device on given bus and slot.
L4_CV int	l4io_pci_find_device (unsigned short vendor, unsigned short device, l4io_pdev_t start, l4io_pci_dev_t *pci_dev)
	Find PCI device on given vendor and device ids.
L4_CV int	l4io_pci_find_class (unsigned long dev_class, l4io_pdev_t start, l4io_pci_dev_t *pci_dev)
	Find PCI device on given class id.
L4_CV int	l4io_pci_enable (l4io_pdev_t pdev)
	Initialize PCI device.
L4_CV int	l4io_pci_disable (l4io_pdev_t pdev)
	Finalize PCI device.
L4_CV void	l4io_pci_set_master (l4io_pdev_t pdev)
	Enable busmastering for PCI device.
L4_CV int	l4io_pci_set_pm (l4io_pdev_t pdev, int state)
	Set PM state for PCI device.

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Detailed Description

Identification of devices and support for configuration space access.

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Function Documentation

L4_CV int l4io_pci_disable

(

l4io_pdev_t

pdev

)

Finalize PCI device.

Parameters:

pdev

PCI device handle

Returns:

0 on success; negative error code otherwise

L4_CV int l4io_pci_enable

(

l4io_pdev_t

pdev

)

Initialize PCI device.

Parameters:

pdev

PCI device handle

Returns:

0 on success; negative error code otherwise

L4_CV int l4io_pci_find_class	(	unsigned long	dev_class,
		l4io_pdev_t	start,
		l4io_pci_dev_t *	pci_dev
	)

Find PCI device on given class id.

Parameters:

	dev_class	device class id
	start	previous PCI device found, or 0 for new search

Return values:

pci_dev

Returns:

0 on success; negative error code otherwise

L4_CV int l4io_pci_find_device	(	unsigned short	vendor,
		unsigned short	device,
		l4io_pdev_t	start,
		l4io_pci_dev_t *	pci_dev
	)

Find PCI device on given vendor and device ids.

Parameters:

	vendor	vendor id or ~0 for any
	device	device id or ~0 for any
	start	previous PCI device found, or 0 for new search

Return values:

pci_dev

Returns:

0 on success; negative error code otherwise

L4_CV int l4io_pci_find_slot	(	unsigned int	bus,
		unsigned int	slot,
		l4io_pci_dev_t *	pci_dev
	)

Find PCI device on given bus and slot.

Parameters:

	bus	PCI bus number
	slot	PCI slot number

Return values:

pci_dev

Returns:

0 on success; negative error code otherwise

L4_CV void l4io_pci_set_master

(

l4io_pdev_t

pdev

)

Enable busmastering for PCI device.

Parameters:

pdev

PCI device handle

L4_CV int l4io_pci_set_pm	(	l4io_pdev_t	pdev,
		int	state
	)

Set PM state for PCI device.

Parameters:

	pdev	PCI device handle
	state	new PM state

Returns:

old PM state