L4vbus::Pci_host_bridge Class Reference

A Pci host bridge. More...

#include <vbus_pci>

Inheritance diagram for L4vbus::Pci_host_bridge:

Collaboration diagram for L4vbus::Pci_host_bridge:

Public Member Functions
int	cfg_read (l4_uint32_t bus, l4_uint32_t devfn, l4_uint32_t reg, l4_uint32_t *value, l4_uint32_t width) const
	Read from the vPCI configuration space using the PCI root bridge.
int	cfg_write (l4_uint32_t bus, l4_uint32_t devfn, l4_uint32_t reg, l4_uint32_t value, l4_uint32_t width) const
	Write to the vPCI configuration space using the PCI root bridge.
int	irq_enable (l4_uint32_t bus, l4_uint32_t devfn, int pin, unsigned char *trigger, unsigned char *polarity) const
	Enable PCI interrupt for a specific device using the PCI root bridge.
Public Member Functions inherited from L4vbus::Device
	Device ()
	Construct a new vbus device using the NULL device L4VBUS_NULL.
	Device (L4::Cap< Vbus > bus, l4vbus_device_handle_t dev)
	Construct a new vbus device using a device handle.
L4::Cap< Vbus >	bus_cap () const
	Access the Vbus capability of the underlying virtual bus.
l4vbus_device_handle_t	dev_handle () const
	Access the device handle of this device.
int	device_by_hid (Device *child, char const *hid, int depth=L4VBUS_MAX_DEPTH, l4vbus_device_t *devinfo=0) const
	Find a device by the hardware interface identifier (HID).
int	next_device (Device *child, int depth=L4VBUS_MAX_DEPTH, l4vbus_device_t *devinfo=0) const
	Find next child following child.
int	device (l4vbus_device_t *devinfo) const
	Obtain detailed information about a Vbus device.
int	get_resource (unsigned res_idx, l4vbus_resource_t *res) const
	Obtain the resource description of an individual device resource.
int	is_compatible (char const *cid) const
	Check if the given device has a compatibility ID (CID) or HID that matches cid.
bool	operator== (Device const &o) const
	Test if two devices are the same Vbus device.
bool	operator!= (Device const &o) const
	Test if two Vbus devices are not the same.
Public Member Functions inherited from L4vbus::Pm< Device >
int	pm_suspend () const
	Suspend the device.
int	pm_resume () const
	Resume the device.

Additional Inherited Members
Protected Attributes inherited from L4vbus::Device
L4::Cap< Vbus >	_bus
	The Vbus capability where this device is located on.
l4vbus_device_handle_t	_dev
	The device handle for this device.

Detailed Description

A Pci host bridge.

Definition at line 27 of file vbus_pci.

Member Function Documentation

cfg_read()

int L4vbus::Pci_host_bridge::cfg_read ( l4_uint32_t  bus, l4_uint32_t  devfn, l4_uint32_t  reg, l4_uint32_t *  value, l4_uint32_t  width  ) const

inline

Read from the vPCI configuration space using the PCI root bridge.

Parameters

	bus	Bus number
	devfn	Device id (upper 16bit) and function (lower 16bit)
	reg	Register in configuration space to read
[out]	value	Value that has been read
	width	Width to read in bits (e.g. 8, 16, 32)

Returns

0 on success, else failure

Definition at line 41 of file vbus_pci.

References L4vbus::Device::_dev, L4vbus::Device::bus_cap(), and l4vbus_pci_cfg_read().

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cfg_write()

int L4vbus::Pci_host_bridge::cfg_write ( l4_uint32_t  bus, l4_uint32_t  devfn, l4_uint32_t  reg, l4_uint32_t  value, l4_uint32_t  width  ) const

inline

Write to the vPCI configuration space using the PCI root bridge.

Parameters

bus	Bus number
devfn	Device id (upper 16bit) and function (lower 16bit)
reg	Register in configuration space to write
value	Value to write
width	Width to write in bits (e.g. 8, 16, 32)

Returns

0 on success, else failure

Definition at line 60 of file vbus_pci.

References L4vbus::Device::_dev, L4vbus::Device::bus_cap(), and l4vbus_pci_cfg_write().

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irq_enable()

int L4vbus::Pci_host_bridge::irq_enable ( l4_uint32_t  bus, l4_uint32_t  devfn, int  pin, unsigned char *  trigger, unsigned char *  polarity  ) const

inline

Enable PCI interrupt for a specific device using the PCI root bridge.

Parameters

	bus	Bus number
	devfn	Device id (upper 16bit) and function (lower 16bit)
	pin	Interrupt pin (normally as reported in configuration register INTR)
[out]	trigger	False if interrupt is level-triggered
[out]	polarity	True if interrupt is of low polarity

Returns

On success: Interrupt line to be used, else failure

Definition at line 81 of file vbus_pci.

References L4vbus::Device::_dev, L4vbus::Device::bus_cap(), and l4vbus_pci_irq_enable().

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The documentation for this class was generated from the following file:

• l4/vbus/vbus_pci