diff options
Diffstat (limited to 'src/drivers/bus/pciextra.c')
| -rw-r--r-- | src/drivers/bus/pciextra.c | 37 |
1 files changed, 1 insertions, 36 deletions
diff --git a/src/drivers/bus/pciextra.c b/src/drivers/bus/pciextra.c index 1eeb9b2a0..f769a3172 100644 --- a/src/drivers/bus/pciextra.c +++ b/src/drivers/bus/pciextra.c @@ -1,4 +1,5 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); +FILE_SECBOOT ( PERMITTED ); #include <stdint.h> #include <ipxe/timer.h> @@ -80,42 +81,6 @@ int pci_find_next_capability ( struct pci_device *pci, int pos, int cap ) { } /** - * Find the size of a PCI BAR - * - * @v pci PCI device - * @v reg PCI register number - * @ret size BAR size - * - * It should not be necessary for any Etherboot code to call this - * function. - */ -unsigned long pci_bar_size ( struct pci_device *pci, unsigned int reg ) { - uint16_t cmd; - uint32_t start, size; - - /* Save the original command register */ - pci_read_config_word ( pci, PCI_COMMAND, &cmd ); - /* Save the original bar */ - pci_read_config_dword ( pci, reg, &start ); - /* Compute which bits can be set */ - pci_write_config_dword ( pci, reg, ~0 ); - pci_read_config_dword ( pci, reg, &size ); - /* Restore the original size */ - pci_write_config_dword ( pci, reg, start ); - /* Find the significant bits */ - /* Restore the original command register. This reenables decoding. */ - pci_write_config_word ( pci, PCI_COMMAND, cmd ); - if ( start & PCI_BASE_ADDRESS_SPACE_IO ) { - size &= ~PCI_BASE_ADDRESS_IO_MASK; - } else { - size &= ~PCI_BASE_ADDRESS_MEM_MASK; - } - /* Find the lowest bit set */ - size = size & ~( size - 1 ); - return size; -} - -/** * Perform PCI Express function-level reset (FLR) * * @v pci PCI device |