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| author | Michael Brown <mcb30@ipxe.org> | 2022-11-13 20:42:09 +0000 |
|---|---|---|
| committer | Michael Brown <mcb30@ipxe.org> | 2022-11-13 20:42:09 +0000 |
| commit | ca2be7e094c900542e36f70f3abc3c8ff7c3055d (patch) | |
| tree | dc22399acbc7aba0a69f673fb93d7d095a179a85 /src/drivers/bus | |
| parent | 688646fe6d034e98fe7cbcc9403a2d0f70434f40 (diff) | |
| download | ipxe-ca2be7e094c900542e36f70f3abc3c8ff7c3055d.tar.gz | |
[pci] Allow PCI config space backup to be limited by maximum offset
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/drivers/bus')
| -rw-r--r-- | src/drivers/bus/pcibackup.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/drivers/bus/pcibackup.c b/src/drivers/bus/pcibackup.c index fecad8192..4cf126f83 100644 --- a/src/drivers/bus/pcibackup.c +++ b/src/drivers/bus/pcibackup.c @@ -61,14 +61,15 @@ pci_backup_excluded ( struct pci_device *pci, unsigned int offset, * * @v pci PCI device * @v backup PCI configuration space backup + * @v limit Maximum offset in PCI configuration space * @v exclude PCI configuration space backup exclusion list, or NULL */ void pci_backup ( struct pci_device *pci, struct pci_config_backup *backup, - const uint8_t *exclude ) { + unsigned int limit, const uint8_t *exclude ) { unsigned int offset; uint32_t *dword; - for ( offset = 0, dword = backup->dwords ; offset < 0x100 ; + 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 ); @@ -80,14 +81,15 @@ void pci_backup ( struct pci_device *pci, struct pci_config_backup *backup, * * @v pci PCI device * @v backup PCI configuration space backup + * @v limit Maximum offset in PCI configuration space * @v exclude PCI configuration space backup exclusion list, or NULL */ void pci_restore ( struct pci_device *pci, struct pci_config_backup *backup, - const uint8_t *exclude ) { + unsigned int limit, const uint8_t *exclude ) { unsigned int offset; uint32_t *dword; - for ( offset = 0, dword = backup->dwords ; offset < 0x100 ; + 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 ); |