pci.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include "hudson.h"
#include <southbridge/amd/common/amd_pci_util.h>
#include <bootstate.h>
 
/*
 * Update the PCI devices with a valid IRQ number
 * that is set in the mainboard PCI_IRQ structures.
 */
static void set_pci_irqs(void *unused)
{
        /* Write PCI_INTR regs 0xC00/0xC01 */
        write_pci_int_table();
 
        /* Write IRQs for all devicetree enabled devices */
        write_pci_cfg_irqs();
}
 
/*
 * Hook this function into the PCI state machine
 * on entry into BS_DEV_ENABLE.
 */
BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, set_pci_irqs, NULL);
 
static struct pci_operations lops_pci = {
        .set_subsystem = 0,
};
 
static struct device_operations pci_ops = {
        .read_resources = pci_bus_read_resources,
        .set_resources = pci_dev_set_resources,
        .enable_resources = pci_bus_enable_resources,
        .scan_bus = pci_scan_bridge,
        .reset_bus = pci_bus_reset,
        .ops_pci = &lops_pci,
};
 
static const struct pci_driver pci_driver __pci_driver = {
        .ops = &pci_ops,
        .vendor = PCI_VID_AMD,
        .device = PCI_DID_AMD_SB900_PCI,
};