pcidirect.h File Reference

PCI configuration space access via Type 1 accesses. More...

#include <stdint.h>
#include <gpxe/io.h>

Go to the source code of this file.

Defines

#define PCIAPI_PREFIX_direct   __direct_

#define PCIDIRECT_CONFIG_ADDRESS   0xcf8

#define PCIDIRECT_CONFIG_DATA   0xcfc

Functions

FILE_LICENCE (GPL2_OR_LATER)

void pcidirect_prepare (struct pci_device *pci, int where)

Prepare for Type 1 PCI configuration space access.

static __always_inline int PCIAPI_INLINE (direct, pci_max_bus)(void)

Determine maximum PCI bus number within system.

static __always_inline int PCIAPI_INLINE (direct, pci_read_config_byte)(struct pci_device *pci

Read byte from PCI configuration space via Type 1 access.

Variables

static __always_inline int
unsigned int where

Detailed Description

PCI configuration space access via Type 1 accesses.

Definition in file pcidirect.h.

Define Documentation

#define PCIAPI_PREFIX_direct __direct_

Definition at line 12 of file pcidirect.h.

#define PCIDIRECT_CONFIG_ADDRESS 0xcf8

Definition at line 21 of file pcidirect.h.

Referenced by pcidirect_prepare().

#define PCIDIRECT_CONFIG_DATA 0xcfc

Definition at line 22 of file pcidirect.h.

Function Documentation

FILE_LICENCE ( GPL2_OR_LATER )

void pcidirect_prepare	(	struct pci_device *	pci,
		int	where
	)

Prepare for Type 1 PCI configuration space access.

Parameters:

	pci	PCI device
	where	Location within PCI configuration space

Definition at line 36 of file pcidirect.c.

References pci_device::bus, pci_device::devfn, outl, and PCIDIRECT_CONFIG_ADDRESS.

00036                                                              {
00037         outl ( ( 0x80000000 | ( pci->bus << 16 ) | ( pci->devfn << 8 ) |
00038                  ( where & ~3 ) ), PCIDIRECT_CONFIG_ADDRESS );
00039 }

static __always_inline int PCIAPI_INLINE	(	direct	,
		pci_max_bus
	)			`[inline, static]`

Determine maximum PCI bus number within system.

Return values:

max_bus

Maximum bus number

Definition at line 34 of file pcidirect.h.

00034                                                {
00035         /* No way to work this out via Type 1 accesses */
00036         return 0xff;
00037 }

static __always_inline int PCIAPI_INLINE	(	direct	,
		pci_read_config_byte
	)			`[inline, static]`

Read byte from PCI configuration space via Type 1 access.

Parameters:

	pci	PCI device
	where	Location within PCI configuration space
	value	Value read

Return values:

rc

Return status code

Variable Documentation

__always_inline int unsigned int where

Definition at line 49 of file pcidirect.h.


Defines
#define	PCIAPI_PREFIX_direct __direct_
#define	PCIDIRECT_CONFIG_ADDRESS 0xcf8
#define	PCIDIRECT_CONFIG_DATA 0xcfc
Functions
	FILE_LICENCE (GPL2_OR_LATER)
void	pcidirect_prepare (struct pci_device *pci, int where)
	Prepare for Type 1 PCI configuration space access.
static __always_inline int	PCIAPI_INLINE (direct, pci_max_bus)(void)
	Determine maximum PCI bus number within system.
static __always_inline int	PCIAPI_INLINE (direct, pci_read_config_byte)(struct pci_device *pci
	Read byte from PCI configuration space via Type 1 access.
Variables
static __always_inline int unsigned int	where