pciexp.h File Reference

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Macros
#define	ASPM_LTR_L12_THRESHOLD_VALUE_OFFSET   16
#define	ASPM_LTR_L12_THRESHOLD_VALUE_MASK   (0x3ff << ASPM_LTR_L12_THRESHOLD_VALUE_OFFSET)
#define	ASPM_LTR_L12_THRESHOLD_SCALE_OFFSET   29
#define	ASPM_LTR_L12_THRESHOLD_SCALE_MASK   (0x7 << ASPM_LTR_L12_THRESHOLD_SCALE_OFFSET)
#define	PCIE_LTR_MAX_NO_SNOOP_LATENCY_3146US   0x1003
#define	PCIE_LTR_MAX_SNOOP_LATENCY_3146US   0x1003

Enumerations
enum	aspm_type { PCIE_ASPM_NONE = 0 , PCIE_ASPM_L0S = 1 , PCIE_ASPM_L1 = 2 , PCIE_ASPM_BOTH = 3 }

Functions
void	pciexp_scan_bus (struct bus *bus, unsigned int min_devfn, unsigned int max_devfn)
void	pciexp_scan_bridge (struct device *dev)
void	pciexp_hotplug_scan_bridge (struct device *dev)
unsigned int	pciexp_find_extended_cap (const struct device *dev, unsigned int cap)
unsigned int	pciexp_find_next_extended_cap (const struct device *dev, unsigned int cap, unsigned int offset)
static bool	pciexp_is_downstream_port (int type)
bool	pciexp_get_ltr_max_latencies (struct device *dev, u16 *max_snoop, u16 *max_nosnoop)

Variables
struct device_operations	default_pciexp_ops_bus
struct device_operations	default_pciexp_hotplug_ops_bus

Macro Definition Documentation

ASPM_LTR_L12_THRESHOLD_SCALE_MASK

#define ASPM_LTR_L12_THRESHOLD_SCALE_MASK   (0x7 << ASPM_LTR_L12_THRESHOLD_SCALE_OFFSET)

Definition at line 15 of file pciexp.h.

ASPM_LTR_L12_THRESHOLD_SCALE_OFFSET

#define ASPM_LTR_L12_THRESHOLD_SCALE_OFFSET   29

Definition at line 14 of file pciexp.h.

ASPM_LTR_L12_THRESHOLD_VALUE_MASK

#define ASPM_LTR_L12_THRESHOLD_VALUE_MASK   (0x3ff << ASPM_LTR_L12_THRESHOLD_VALUE_OFFSET)

Definition at line 13 of file pciexp.h.

ASPM_LTR_L12_THRESHOLD_VALUE_OFFSET

#define ASPM_LTR_L12_THRESHOLD_VALUE_OFFSET   16

Definition at line 12 of file pciexp.h.

PCIE_LTR_MAX_NO_SNOOP_LATENCY_3146US

#define PCIE_LTR_MAX_NO_SNOOP_LATENCY_3146US   0x1003

Definition at line 18 of file pciexp.h.

PCIE_LTR_MAX_SNOOP_LATENCY_3146US

#define PCIE_LTR_MAX_SNOOP_LATENCY_3146US   0x1003

Definition at line 20 of file pciexp.h.

Enumeration Type Documentation

aspm_type

enum aspm_type

Enumerator
PCIE_ASPM_NONE
PCIE_ASPM_L0S
PCIE_ASPM_L1
PCIE_ASPM_BOTH

Definition at line 5 of file pciexp.h.

Function Documentation

pciexp_find_extended_cap()

unsigned int pciexp_find_extended_cap	(	const struct device *	dev,
		unsigned int	cap
	)

Definition at line 39 of file pciexp_device.c.

References PCIE_EXT_CAP_OFFSET, and pciexp_get_ext_cap_offset().

Referenced by get_rebar_offset(), lv2_enable_ltr(), pciexp_config_L1_sub_state(), and pciexp_configure_ltr().

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pciexp_find_next_extended_cap()

unsigned int pciexp_find_next_extended_cap	(	const struct device *	dev,
		unsigned int	cap,
		unsigned int	offset
	)

Definition at line 32 of file pciexp_device.c.

References pci_read_config32(), and pciexp_get_ext_cap_offset().

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pciexp_get_ltr_max_latencies()

bool pciexp_get_ltr_max_latencies	(	struct device *	dev,
		u16 *	max_snoop,
		u16 *	max_nosnoop
	)

Definition at line 194 of file pciexp_device.c.

References device::bus, bus::dev, DEVICE_PATH_PCI, device::ops, device_operations::ops_pci, device::path, and device_path::type.

Referenced by lv2_enable_ltr(), and pciexp_configure_ltr().

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pciexp_hotplug_scan_bridge()

void pciexp_hotplug_scan_bridge

(

struct device *

dev

)

Definition at line 591 of file pciexp_device.c.

pciexp_is_downstream_port()

static bool pciexp_is_downstream_port ( int  type )

inlinestatic

Definition at line 37 of file pciexp.h.

References PCI_EXP_TYPE_DOWNSTREAM, PCI_EXP_TYPE_PCIE_BRIDGE, PCI_EXP_TYPE_ROOT_PORT, and type.

Referenced by pci_bus_only_one_child().

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pciexp_scan_bridge()

void pciexp_scan_bridge

(

struct device *

dev

)

Definition at line 534 of file pciexp_device.c.

pciexp_scan_bus()

void pciexp_scan_bus	(	struct bus *	bus,
		unsigned int	min_devfn,
		unsigned int	max_devfn
	)

Definition at line 514 of file pciexp_device.c.

References bus::children, bus::dev, pci_path::devfn, DEVICE_PATH_PCI, device::path, device_path::pci, pci_scan_bus(), pciexp_enable_ltr(), pciexp_tune_dev(), device::sibling, and device_path::type.

Referenced by byt_pciexp_scan_bridge().

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Variable Documentation

default_pciexp_hotplug_ops_bus

struct device_operations default_pciexp_hotplug_ops_bus

extern

Definition at line 591 of file pciexp_device.c.

Referenced by get_pci_bridge_ops().

default_pciexp_ops_bus

struct device_operations default_pciexp_ops_bus

extern

Definition at line 534 of file pciexp_device.c.

Referenced by get_pci_bridge_ops().