aboutsummaryrefslogtreecommitdiffstats
path: root/gpxe/src/include/gpxe/pcibackup.h
diff options
context:
space:
mode:
Diffstat (limited to 'gpxe/src/include/gpxe/pcibackup.h')
-rw-r--r--gpxe/src/include/gpxe/pcibackup.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/gpxe/src/include/gpxe/pcibackup.h b/gpxe/src/include/gpxe/pcibackup.h
new file mode 100644
index 00000000..3d295c0f
--- /dev/null
+++ b/gpxe/src/include/gpxe/pcibackup.h
@@ -0,0 +1,33 @@
+#ifndef _GPXE_PCIBACKUP_H
+#define _GPXE_PCIBACKUP_H
+
+/** @file
+ *
+ * PCI configuration space backup and restoration
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+
+/** A PCI configuration space backup */
+struct pci_config_backup {
+ uint32_t dwords[64];
+};
+
+/** PCI configuration space backup exclusion list end marker */
+#define PCI_CONFIG_BACKUP_EXCLUDE_END 0xff
+
+/** Define a PCI configuration space backup exclusion list */
+#define PCI_CONFIG_BACKUP_EXCLUDE(...) \
+ { __VA_ARGS__, PCI_CONFIG_BACKUP_EXCLUDE_END }
+
+extern void pci_backup ( struct pci_device *pci,
+ struct pci_config_backup *backup,
+ const uint8_t *exclude );
+extern void pci_restore ( struct pci_device *pci,
+ struct pci_config_backup *backup,
+ const uint8_t *exclude );
+
+#endif /* _GPXE_PCIBACKUP_H */