pcibackup.h File Reference

PCI configuration space backup and restoration. More...

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	pci_config_backup
	A PCI configuration space backup. More...

Macros
#define	PCI_CONFIG_BACKUP_ALL   0x100
	Limit of PCI configuration space. More...
#define	PCI_CONFIG_BACKUP_STANDARD   0x40
	Limit of standard PCI configuration space. More...
#define	PCI_CONFIG_BACKUP_EXCLUDE_END   0xff
	PCI configuration space backup exclusion list end marker. More...
#define	PCI_CONFIG_BACKUP_EXCLUDE(...)   { __VA_ARGS__, PCI_CONFIG_BACKUP_EXCLUDE_END }
	Define a PCI configuration space backup exclusion list. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
void	pci_backup (struct pci_device *pci, struct pci_config_backup *backup, unsigned int limit, const uint8_t *exclude)
	Back up PCI configuration space. More...
void	pci_restore (struct pci_device *pci, struct pci_config_backup *backup, unsigned int limit, const uint8_t *exclude)
	Restore PCI configuration space. More...

Detailed Description

PCI configuration space backup and restoration.

Definition in file pcibackup.h.

Macro Definition Documentation

PCI_CONFIG_BACKUP_ALL

#define PCI_CONFIG_BACKUP_ALL   0x100

Limit of PCI configuration space.

Definition at line 15 of file pcibackup.h.

PCI_CONFIG_BACKUP_STANDARD

#define PCI_CONFIG_BACKUP_STANDARD   0x40

Limit of standard PCI configuration space.

Definition at line 18 of file pcibackup.h.

PCI_CONFIG_BACKUP_EXCLUDE_END

#define PCI_CONFIG_BACKUP_EXCLUDE_END   0xff

PCI configuration space backup exclusion list end marker.

Definition at line 26 of file pcibackup.h.

PCI_CONFIG_BACKUP_EXCLUDE

#define PCI_CONFIG_BACKUP_EXCLUDE

(

...

)

{ __VA_ARGS__, PCI_CONFIG_BACKUP_EXCLUDE_END }

Define a PCI configuration space backup exclusion list.

Definition at line 29 of file pcibackup.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

pci_backup()

void pci_backup	(	struct pci_device *	pci,
		struct pci_config_backup *	backup,
		unsigned int	limit,
		const uint8_t *	exclude
	)

Back up PCI configuration space.

Parameters

pci	PCI device
backup	PCI configuration space backup
limit	Maximum offset in PCI configuration space
exclude	PCI configuration space backup exclusion list, or NULL

Definition at line 67 of file pcibackup.c.

                                                               {
        unsigned int offset;
        uint32_t *dword;

        for ( offset = 0, dword = backup->dwords ; offset < limit ;
              offset += sizeof ( *dword ) , dword++ ) {
                if ( ! pci_backup_excluded ( pci, offset, exclude ) )
                        pci_read_config_dword ( pci, offset, dword );
        }
}

References pci_config_backup::dwords, limit, offset, pci_backup_excluded(), and pci_read_config_dword().

Referenced by arbel_reset(), hermon_reset(), pci_reset(), and qib7322_reset().

pci_restore()

void pci_restore	(	struct pci_device *	pci,
		struct pci_config_backup *	backup,
		unsigned int	limit,
		const uint8_t *	exclude
	)

Restore PCI configuration space.

Parameters

pci	PCI device
backup	PCI configuration space backup
limit	Maximum offset in PCI configuration space
exclude	PCI configuration space backup exclusion list, or NULL

Definition at line 87 of file pcibackup.c.

                                                                {
        unsigned int offset;
        uint32_t *dword;

        for ( offset = 0, dword = backup->dwords ; offset < limit ;
              offset += sizeof ( *dword ) , dword++ ) {
                if ( ! pci_backup_excluded ( pci, offset, exclude ) )
                        pci_write_config_dword ( pci, offset, *dword );
        }
}

References pci_config_backup::dwords, limit, offset, pci_backup_excluded(), and pci_write_config_dword().

Referenced by arbel_reset(), hermon_reset(), pci_reset(), and qib7322_reset().