src/include/gpxe/pcibackup.h

   1 #ifndef _GPXE_PCIBACKUP_H
   2 #define _GPXE_PCIBACKUP_H
   3
   4 /** @file
   5  *
   6  * PCI configuration space backup and restoration
   7  *
   8  */
   9
  10 FILE_LICENCE ( GPL2_OR_LATER );
  11
  12 #include <stdint.h>
  13
  14 /** A PCI configuration space backup */
  15 struct pci_config_backup {
  16         uint32_t dwords[64];
  17 };
  18
  19 /** PCI configuration space backup exclusion list end marker */
  20 #define PCI_CONFIG_BACKUP_EXCLUDE_END 0xff
  21
  22 /** Define a PCI configuration space backup exclusion list */
  23 #define PCI_CONFIG_BACKUP_EXCLUDE(...) \
  24         { __VA_ARGS__, PCI_CONFIG_BACKUP_EXCLUDE_END }
  25
  26 extern void pci_backup ( struct pci_device *pci,
  27                          struct pci_config_backup *backup,
  28                          const uint8_t *exclude );
  29 extern void pci_restore ( struct pci_device *pci,
  30                           struct pci_config_backup *backup,
  31                           const uint8_t *exclude );
  32
  33 #endif /* _GPXE_PCIBACKUP_H */