| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Exceptions for specific devices, |
| * |
| * Copyright IBM Corp. 2025 |
| * |
| * Author(s): |
| * Niklas Schnelle <schnelle@linux.ibm.com> |
| */ |
| #include <linux/pci.h> |
| |
| static void zpci_ism_bar_no_mmap(struct pci_dev *pdev) |
| { |
| /* |
| * ISM's BAR is special. Drivers written for ISM know |
| * how to handle this but others need to be aware of their |
| * special nature e.g. to prevent attempts to mmap() it. |
| */ |
| pdev->non_mappable_bars = 1; |
| } |
| DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IBM, |
| PCI_DEVICE_ID_IBM_ISM, |
| zpci_ism_bar_no_mmap); |
