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/* 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, "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, bridge 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].bridge_irq);
}
*entries = routing_table_entries;
return routing_table;
}
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