Some devices, such as VFIO IGD passthrough, require device-specific fixups on the romfile provided by user. Add an optional romfile_fixup hook to PCIDevice. When set, it is invoked from pci_add_option_rom() right after the image is loaded, receiving the ROM buffer and its size. This provides a place to post-process a loaded romfile without leaking device-specific logic into the generic PCI core.
Reported-by: K S Maan <[email protected]> Signed-off-by: Tomita Moeko <[email protected]> Acked-by: Michael S. Tsirkin <[email protected]> --- hw/pci/pci.c | 4 ++++ include/hw/pci/pci_device.h | 1 + 2 files changed, 5 insertions(+) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index d3191609e2..04372074ff 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2639,6 +2639,10 @@ static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom, /* Only the default rom images will be patched (if needed). */ pci_patch_ids(pdev, ptr, size); } + + if (pdev->romfile_fixup) { + pdev->romfile_fixup(pdev, ptr, size); + } } pci_register_bar(pdev, PCI_ROM_SLOT, 0, &pdev->rom); diff --git a/include/hw/pci/pci_device.h b/include/hw/pci/pci_device.h index 5cac6e1688..a65e77018c 100644 --- a/include/hw/pci/pci_device.h +++ b/include/hw/pci/pci_device.h @@ -159,6 +159,7 @@ struct PCIDevice { bool has_rom; MemoryRegion rom; int32_t rom_bar; + void (*romfile_fixup)(PCIDevice *pdev, uint8_t *ptr, uint32_t size); /* INTx routing notifier */ PCIINTxRoutingNotifier intx_routing_notifier; -- 2.53.0
