iPXE
Data Structures | Macros | Functions
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_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, const uint8_t *exclude)
 Back up PCI configuration space. More...
 
void pci_restore (struct pci_device *pci, struct pci_config_backup *backup, 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_EXCLUDE_END

#define PCI_CONFIG_BACKUP_EXCLUDE_END   0xff

PCI configuration space backup exclusion list end marker.

Definition at line 20 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 23 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,
const uint8_t exclude 
)

Back up PCI configuration space.

Parameters
pciPCI device
backupPCI configuration space backup
excludePCI configuration space backup exclusion list, or NULL

Definition at line 66 of file pcibackup.c.

67  {
68  unsigned int offset;
69  uint32_t *dword;
70 
71  for ( offset = 0, dword = backup->dwords ; offset < 0x100 ;
72  offset += sizeof ( *dword ) , dword++ ) {
73  if ( ! pci_backup_excluded ( pci, offset, exclude ) )
75  }
76 }
int pci_read_config_dword(struct pci_device *pci, unsigned int where, uint32_t *value)
Read 32-bit dword from PCI configuration space.
static userptr_t size_t offset
Offset of the first segment within the content.
Definition: deflate.h:259
unsigned int uint32_t
Definition: stdint.h:12
uint32_t dwords[64]
Definition: pcibackup.h:16
unsigned long int dword
Definition: smc9000.h:40
static int pci_backup_excluded(struct pci_device *pci, unsigned int offset, const uint8_t *exclude)
Check PCI configuration space offset against exclusion list.
Definition: pcibackup.c:44

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

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

◆ pci_restore()

void pci_restore ( struct pci_device pci,
struct pci_config_backup backup,
const uint8_t exclude 
)

Restore PCI configuration space.

Parameters
pciPCI device
backupPCI configuration space backup
excludePCI configuration space backup exclusion list, or NULL

Definition at line 85 of file pcibackup.c.

86  {
87  unsigned int offset;
88  uint32_t *dword;
89 
90  for ( offset = 0, dword = backup->dwords ; offset < 0x100 ;
91  offset += sizeof ( *dword ) , dword++ ) {
92  if ( ! pci_backup_excluded ( pci, offset, exclude ) )
94  }
95 }
static userptr_t size_t offset
Offset of the first segment within the content.
Definition: deflate.h:259
unsigned int uint32_t
Definition: stdint.h:12
int pci_write_config_dword(struct pci_device *pci, unsigned int where, uint32_t value)
Write 32-bit dword to PCI configuration space.
uint32_t dwords[64]
Definition: pcibackup.h:16
unsigned long int dword
Definition: smc9000.h:40
static int pci_backup_excluded(struct pci_device *pci, unsigned int offset, const uint8_t *exclude)
Check PCI configuration space offset against exclusion list.
Definition: pcibackup.c:44

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

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