| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/amd_pci_util.h> |
| #include <console/console.h> |
| #include <device/pci_def.h> |
| #include <fsp/util.h> |
| #include <FspGuids.h> |
| #include <types.h> |
| |
| const struct pci_routing_info *get_pci_routing_table(size_t *entries) |
| { |
| static const struct pci_routing_info *routing_table; |
| static size_t routing_table_entries; |
| size_t hob_size = 0; |
| const struct { |
| uint32_t num_of_entries; |
| struct pci_routing_info routing_table[]; |
| } __packed *routing_hob; |
| |
| if (routing_table) { |
| *entries = routing_table_entries; |
| return routing_table; |
| } |
| |
| routing_hob = fsp_find_extension_hob_by_guid(AMD_FSP_PCIE_DEVFUNC_REMAP_HOB_GUID.b, |
| &hob_size); |
| |
| if (routing_hob == NULL || hob_size == 0 || routing_hob->num_of_entries == 0) { |
| printk(BIOS_ERR, "ERROR: Couldn't find valid PCIe interrupt routing HOB.\n"); |
| return NULL; |
| } |
| |
| routing_table = routing_hob->routing_table; |
| routing_table_entries = routing_hob->num_of_entries; |
| |
| for (size_t i = 0; i < routing_table_entries; ++i) { |
| printk(BIOS_DEBUG, "%02x.%x: group: %u, swizzle: %u, irq: %u\n", |
| PCI_SLOT(routing_table[i].devfn), PCI_FUNC(routing_table[i].devfn), |
| routing_table[i].group, routing_table[i].swizzle, routing_table[i].irq); |
| } |
| |
| *entries = routing_table_entries; |
| |
| return routing_table; |
| } |