efi_pci.c File Reference

gPXE PCI I/O API for EFI More...

#include <errno.h>
#include <gpxe/pci.h>
#include <gpxe/efi/efi.h>
#include <gpxe/efi/Protocol/PciRootBridgeIo.h>

Go to the source code of this file.

Functions

FILE_LICENCE (GPL2_OR_LATER)

EFI_REQUIRE_PROTOCOL (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL,&efipci)

static unsigned long efipci_address (struct pci_device *pci, unsigned long location)

int efipci_read (struct pci_device *pci, unsigned long location, void *value)

int efipci_write (struct pci_device *pci, unsigned long location, unsigned long value)

PROVIDE_PCIAPI_INLINE (efi, pci_max_bus)

PROVIDE_PCIAPI_INLINE (efi, pci_read_config_byte)

PROVIDE_PCIAPI_INLINE (efi, pci_read_config_word)

PROVIDE_PCIAPI_INLINE (efi, pci_read_config_dword)

PROVIDE_PCIAPI_INLINE (efi, pci_write_config_byte)

PROVIDE_PCIAPI_INLINE (efi, pci_write_config_word)

PROVIDE_PCIAPI_INLINE (efi, pci_write_config_dword)

Variables

static
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL * efipci

PCI root bridge I/O protocol.

Detailed Description

gPXE PCI I/O API for EFI

Definition in file efi_pci.c.

Function Documentation

FILE_LICENCE ( GPL2_OR_LATER )

EFI_REQUIRE_PROTOCOL	(	EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL	,
		&	efipci
	)

static unsigned long efipci_address	(	struct pci_device *	pci,
		unsigned long	location
	)			`[static]`

Definition at line 36 of file efi_pci.c.

References pci_device::bus, pci_device::devfn, EFI_PCI_ADDRESS, EFIPCI_OFFSET, PCI_FUNC, and PCI_SLOT.

Referenced by efipci_read(), and efipci_write().

00037                                                                {
00038         return EFI_PCI_ADDRESS ( pci->bus, PCI_SLOT ( pci->devfn ),
00039                                  PCI_FUNC ( pci->devfn ),
00040                                  EFIPCI_OFFSET ( location ) );
00041 }

int efipci_read	(	struct pci_device *	pci,
		unsigned long	location,
		void *	value
	)

Definition at line 43 of file efi_pci.c.

References pci_device::bus, DBG, pci_device::devfn, efi_strerror(), efipci_address(), EFIPCI_OFFSET, EFIPCI_WIDTH, EIO, _EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL::Pci, PCI_FUNC, PCI_SLOT, and EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS::Read.

00044                                 {
00045         EFI_STATUS efirc;
00046 
00047         if ( ( efirc = efipci->Pci.Read ( efipci, EFIPCI_WIDTH ( location ),
00048                                           efipci_address ( pci, location ), 1,
00049                                           value ) ) != 0 ) {
00050                 DBG ( "EFIPCI config read from %02x:%02x.%x offset %02lx "
00051                       "failed: %s\n", pci->bus, PCI_SLOT ( pci->devfn ),
00052                       PCI_FUNC ( pci->devfn ), EFIPCI_OFFSET ( location ),
00053                       efi_strerror ( efirc ) );
00054                 return -EIO;
00055         }
00056 
00057         return 0;
00058 }

int efipci_write	(	struct pci_device *	pci,
		unsigned long	location,
		unsigned long	value
	)

Definition at line 60 of file efi_pci.c.

References pci_device::bus, DBG, pci_device::devfn, efi_strerror(), efipci_address(), EFIPCI_OFFSET, EFIPCI_WIDTH, EIO, _EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL::Pci, PCI_FUNC, PCI_SLOT, and EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_ACCESS::Write.

00061                                          {
00062         EFI_STATUS efirc;
00063 
00064         if ( ( efirc = efipci->Pci.Write ( efipci, EFIPCI_WIDTH ( location ),
00065                                            efipci_address ( pci, location ), 1,
00066                                            &value ) ) != 0 ) {
00067                 DBG ( "EFIPCI config write to %02x:%02x.%x offset %02lx "
00068                       "failed: %s\n", pci->bus, PCI_SLOT ( pci->devfn ),
00069                       PCI_FUNC ( pci->devfn ), EFIPCI_OFFSET ( location ),
00070                       efi_strerror ( efirc ) );
00071                 return -EIO;
00072         }
00073 
00074         return 0;
00075 }

PROVIDE_PCIAPI_INLINE	(	efi	,
		pci_max_bus
	)

PROVIDE_PCIAPI_INLINE	(	efi	,
		pci_read_config_byte
	)

PROVIDE_PCIAPI_INLINE	(	efi	,
		pci_read_config_word
	)

PROVIDE_PCIAPI_INLINE	(	efi	,
		pci_read_config_dword
	)

PROVIDE_PCIAPI_INLINE	(	efi	,
		pci_write_config_byte
	)

PROVIDE_PCIAPI_INLINE	(	efi	,
		pci_write_config_word
	)

PROVIDE_PCIAPI_INLINE	(	efi	,
		pci_write_config_dword
	)

Variable Documentation

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL* efipci [static]

PCI root bridge I/O protocol.

Definition at line 33 of file efi_pci.c.


Functions
	FILE_LICENCE (GPL2_OR_LATER)
	EFI_REQUIRE_PROTOCOL (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL,&efipci)
static unsigned long	efipci_address (struct pci_device *pci, unsigned long location)
int	efipci_read (struct pci_device pci, unsigned long location, void value)
int	efipci_write (struct pci_device *pci, unsigned long location, unsigned long value)
	PROVIDE_PCIAPI_INLINE (efi, pci_max_bus)
	PROVIDE_PCIAPI_INLINE (efi, pci_read_config_byte)
	PROVIDE_PCIAPI_INLINE (efi, pci_read_config_word)
	PROVIDE_PCIAPI_INLINE (efi, pci_read_config_dword)
	PROVIDE_PCIAPI_INLINE (efi, pci_write_config_byte)
	PROVIDE_PCIAPI_INLINE (efi, pci_write_config_word)
	PROVIDE_PCIAPI_INLINE (efi, pci_write_config_dword)
Variables
static EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *	efipci
	PCI root bridge I/O protocol.