106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
|
/*
|
||
|
|
* This file is part of the coreboot project.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2017-2018 Patrick Rudolph <siro@das-labor.org>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation; version 2 of
|
||
|
|
* the License.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <console/console.h>
|
||
|
|
#include <device/device.h>
|
||
|
|
#include <device/pci.h>
|
||
|
|
#include <device/pciexp.h>
|
||
|
|
#include <device/pci_ids.h>
|
||
|
|
#include <assert.h>
|
||
|
|
|
||
|
|
static void pcie_disable(struct device *dev)
|
||
|
|
{
|
||
|
|
printk(BIOS_INFO, "%s: Disabling device\n", dev_path(dev));
|
||
|
|
dev->enabled = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
|
||
|
|
static const char *pcie_acpi_name(const struct device *dev)
|
||
|
|
{
|
||
|
|
assert(dev);
|
||
|
|
|
||
|
|
if (dev->path.type != DEVICE_PATH_PCI)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
assert(dev->bus);
|
||
|
|
if (dev->bus->secondary == 0)
|
||
|
|
switch (dev->path.pci.devfn) {
|
||
|
|
case PCI_DEVFN(1, 0):
|
||
|
|
return "PEGP";
|
||
|
|
case PCI_DEVFN(1, 1):
|
||
|
|
return "PEG1";
|
||
|
|
case PCI_DEVFN(1, 2):
|
||
|
|
return "PEG2";
|
||
|
|
case PCI_DEVFN(6, 0):
|
||
|
|
return "PEG6";
|
||
|
|
};
|
||
|
|
|
||
|
|
const device_t port = dev->bus->dev;
|
||
|
|
assert(port);
|
||
|
|
assert(port->bus);
|
||
|
|
|
||
|
|
if (dev->path.pci.devfn == PCI_DEVFN(0, 0) &&
|
||
|
|
port->bus->secondary == 0 &&
|
||
|
|
(port->path.pci.devfn == PCI_DEVFN(1, 0) ||
|
||
|
|
port->path.pci.devfn == PCI_DEVFN(1, 1) ||
|
||
|
|
port->path.pci.devfn == PCI_DEVFN(1, 2) ||
|
||
|
|
port->path.pci.devfn == PCI_DEVFN(6, 0)))
|
||
|
|
return "DEV0";
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static void
|
||
|
|
pcie_set_subsystem(struct device *dev, unsigned int ven, unsigned int device)
|
||
|
|
{
|
||
|
|
/* NOTE: This is not the default position! */
|
||
|
|
if (!ven || !device)
|
||
|
|
pci_write_config32(dev, 0x94,
|
||
|
|
pci_read_config32(dev, 0));
|
||
|
|
else
|
||
|
|
pci_write_config32(dev, 0x94,
|
||
|
|
((device & 0xffff) << 16) | (ven & 0xffff));
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct pci_operations pci_ops = {
|
||
|
|
.set_subsystem = pcie_set_subsystem,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct device_operations device_ops = {
|
||
|
|
.read_resources = pci_bus_read_resources,
|
||
|
|
.set_resources = pci_dev_set_resources,
|
||
|
|
.enable_resources = pci_bus_enable_resources,
|
||
|
|
.scan_bus = pciexp_scan_bridge,
|
||
|
|
.reset_bus = pci_bus_reset,
|
||
|
|
.disable = pcie_disable,
|
||
|
|
.init = pci_dev_init,
|
||
|
|
.ops_pci = &pci_ops,
|
||
|
|
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
|
||
|
|
.acpi_name = pcie_acpi_name,
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
static const unsigned short pci_device_ids[] = { 0x0101, 0x0105, 0x0109, 0x010d,
|
||
|
|
0x0151, 0x0155, 0x0159, 0x015d,
|
||
|
|
0 };
|
||
|
|
|
||
|
|
static const struct pci_driver pch_pcie __pci_driver = {
|
||
|
|
.ops = &device_ops,
|
||
|
|
.vendor = PCI_VENDOR_ID_INTEL,
|
||
|
|
.devices = pci_device_ids,
|
||
|
|
};
|