| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <lib.h> |
| |
| static void iommu_read_resources(struct device *dev) |
| { |
| struct resource *res; |
| |
| /* Get the normal pci resources of this device */ |
| pci_dev_read_resources(dev); |
| |
| /* Add an extra subtractive resource for both memory and I/O. */ |
| res = new_resource(dev, 0x44); |
| res->size = 512 * KiB; |
| res->align = log2(res->size); |
| res->gran = log2(res->size); |
| res->limit = 0xffffffff; /* 4G */ |
| res->flags = IORESOURCE_MEM; |
| } |
| |
| #if CONFIG(HAVE_ACPI_TABLES) |
| static const char *iommu_acpi_name(const struct device *dev) |
| { |
| return "IOMM"; |
| } |
| #endif |
| |
| static struct device_operations iommu_ops = { |
| .read_resources = iommu_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .ops_pci = &pci_dev_ops_pci, |
| #if CONFIG(HAVE_ACPI_TABLES) |
| .acpi_name = iommu_acpi_name, |
| #endif |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| PCI_DEVICE_ID_AMD_15H_MODEL_303F_NB_IOMMU, |
| PCI_DEVICE_ID_AMD_15H_MODEL_707F_NB_IOMMU, |
| PCI_DEVICE_ID_AMD_17H_MODEL_1020_NB_IOMMU, |
| PCI_DEVICE_ID_AMD_17H_MODEL_606F_NB_IOMMU, |
| 0 |
| }; |
| |
| static const struct pci_driver iommu_driver __pci_driver = { |
| .ops = &iommu_ops, |
| .vendor = PCI_VENDOR_ID_AMD, |
| .devices = pci_device_ids, |
| }; |