pcidirect.h File Reference

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

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

Go to the source code of this file.

Macros
#define	PCIAPI_PREFIX_direct   __direct_
#define	PCIDIRECT_CONFIG_ADDRESS   0xcf8
#define	PCIDIRECT_CONFIG_DATA   0xcfc

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
void	pcidirect_prepare (struct pci_device *pci, int where)
	Prepare for Type 1 PCI configuration space access. More...
static __always_inline int	PCIAPI_INLINE (direct, pci_can_probe)(struct pci_device *pci __unused)
	Check if PCI bus probing is allowed. More...
static __always_inline void	PCIAPI_INLINE (direct, pci_discover)(uint32_t busdevfn __unused
	Find next PCI bus:dev.fn address range in system. More...
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. More...
static __always_inline int	PCIAPI_INLINE (direct, pci_read_config_word)(struct pci_device *pci
	Read word from PCI configuration space via Type 1 access. More...
static __always_inline int	PCIAPI_INLINE (direct, pci_read_config_dword)(struct pci_device *pci
	Read dword from PCI configuration space via Type 1 access. More...
static __always_inline int	PCIAPI_INLINE (direct, pci_write_config_byte)(struct pci_device *pci
	Write byte to PCI configuration space via Type 1 access. More...
	outb (value, PCIDIRECT_CONFIG_DATA+(where &3))
static __always_inline int	PCIAPI_INLINE (direct, pci_write_config_word)(struct pci_device *pci
	Write word to PCI configuration space via Type 1 access. More...
	outw (value, PCIDIRECT_CONFIG_DATA+(where &2))
static __always_inline int	PCIAPI_INLINE (direct, pci_write_config_dword)(struct pci_device *pci
	Write dword to PCI configuration space via Type 1 access. More...
	outl (value, PCIDIRECT_CONFIG_DATA)
static __always_inline void *	PCIAPI_INLINE (direct, pci_ioremap)(struct pci_device *pci __unused
	Map PCI bus address as an I/O address. More...

Variables
static __always_inline void struct pci_range *	range
range	count = PCI_BUSDEVFN ( 0, 1, 0, 0 )
static __always_inline int unsigned int	where
static __always_inline int unsigned int uint8_t *	value
	return
static __always_inline void unsigned long	bus_addr
static __always_inline void unsigned long size_t	len

Detailed Description

PCI configuration space access via Type 1 accesses.

Definition in file pcidirect.h.

Macro Definition Documentation

PCIAPI_PREFIX_direct

#define PCIAPI_PREFIX_direct   __direct_

Definition at line 12 of file pcidirect.h.

PCIDIRECT_CONFIG_ADDRESS

#define PCIDIRECT_CONFIG_ADDRESS   0xcf8

Definition at line 21 of file pcidirect.h.

PCIDIRECT_CONFIG_DATA

#define PCIDIRECT_CONFIG_DATA   0xcfc

Definition at line 22 of file pcidirect.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

pcidirect_prepare()

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 41 of file pcidirect.c.

                                                             {
        uint16_t busdevfn = ( pci->busdevfn & 0xffff );

        outl ( ( 0x80000000 | ( busdevfn << 8 ) | ( where & ~3 ) ),
               PCIDIRECT_CONFIG_ADDRESS );
}

References busdevfn, pci_device::busdevfn, outl, PCIDIRECT_CONFIG_ADDRESS, and where.

PCIAPI_INLINE() [1/9]

static __always_inline int PCIAPI_INLINE ( direct  , pci_can_probe    )

inlinestatic

Check if PCI bus probing is allowed.

Parameters

pci	PCI device

Return values

ok	Bus probing is allowed

Definition at line 35 of file pcidirect.h.

                                                                            {
        return 1;
}

PCIAPI_INLINE() [2/9]

static __always_inline void PCIAPI_INLINE ( direct  , pci_discover    )

inlinestatic

Find next PCI bus:dev.fn address range in system.

Parameters

busdevfn	Starting PCI bus:dev.fn address
range	PCI bus:dev.fn address range to fill in

PCIAPI_INLINE() [3/9]

static __always_inline int PCIAPI_INLINE ( direct  , pci_read_config_byte    )

inlinestatic

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

PCIAPI_INLINE() [4/9]

static __always_inline int PCIAPI_INLINE ( direct  , pci_read_config_word    )

inlinestatic

Read word 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

PCIAPI_INLINE() [5/9]

static __always_inline int PCIAPI_INLINE ( direct  , pci_read_config_dword    )

inlinestatic

Read dword 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

PCIAPI_INLINE() [6/9]

static __always_inline int PCIAPI_INLINE ( direct  , pci_write_config_byte    )

inlinestatic

Write byte to PCI configuration space via Type 1 access.

Parameters

pci	PCI device
where	Location within PCI configuration space
value	Value to be written

Return values

rc	Return status code

outb()

outb	(	value	,
		PCIDIRECT_CONFIG_DATA+	where &3
	)

PCIAPI_INLINE() [7/9]

static __always_inline int PCIAPI_INLINE ( direct  , pci_write_config_word    )

inlinestatic

Write word to PCI configuration space via Type 1 access.

Parameters

pci	PCI device
where	Location within PCI configuration space
value	Value to be written

Return values

rc	Return status code

outw()

outw	(	value	,
		PCIDIRECT_CONFIG_DATA+	where &2
	)

PCIAPI_INLINE() [8/9]

static __always_inline int PCIAPI_INLINE ( direct  , pci_write_config_dword    )

inlinestatic

Write dword to PCI configuration space via Type 1 access.

Parameters

pci	PCI device
where	Location within PCI configuration space
value	Value to be written

Return values

rc	Return status code

outl()

outl	(	value	,
		PCIDIRECT_CONFIG_DATA
	)

PCIAPI_INLINE() [9/9]

static __always_inline void* PCIAPI_INLINE ( direct  , pci_ioremap    )

inlinestatic

Map PCI bus address as an I/O address.

Parameters

bus_addr	PCI bus address
len	Length of region

Return values

io_addr

I/O address, or NULL on error

Variable Documentation

range

__always_inline void struct pci_range* range

Initial value:

{

        
        range->start = PCI_BUSDEVFN ( 0, 0, 0, 0 )

Definition at line 47 of file pcidirect.h.

count

range count = PCI_BUSDEVFN ( 0, 1, 0, 0 )

Definition at line 51 of file pcidirect.h.

where

__always_inline int unsigned int where

Definition at line 64 of file pcidirect.h.

value

__always_inline int unsigned int uint32_t value

Initial value:

{
        pcidirect_prepare ( pci, where )

Definition at line 65 of file pcidirect.h.

return

return

Definition at line 68 of file pcidirect.h.

bus_addr

__always_inline void unsigned long bus_addr

Definition at line 165 of file pcidirect.h.

len

__always_inline void unsigned long size_t len

Initial value:

{
        return ioremap ( bus_addr, len )

Definition at line 165 of file pcidirect.h.