nb/intel/sandybridge/peg: Add PEG driver stub
Required for other ACPI generators, like the one used for _ROM. * Add ACPI code for PEG10/PEG11/PEG12/PEG60 and include it on all platforms. * Add PCIe driver for PEG. The driver returns ACPI names for ssdt generators. Needs test on real hardware. Change-Id: I96835c43522580c95fd4f250c56bf9438e993bc1 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/22337 Reviewed-by: Martin Roth <martinroth@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -17,6 +17,7 @@ ifeq ($(CONFIG_NORTHBRIDGE_INTEL_SANDYBRIDGE)$(CONFIG_NORTHBRIDGE_INTEL_IVYBRIDG
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ramstage-y += ram_calc.c
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ramstage-y += northbridge.c
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ramstage-y += pcie.c
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ramstage-y += gma.c
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ramstage-$(CONFIG_SANDYBRIDGE_IVYBRIDGE_LVDS) += gma_sandybridge_lvds.c
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ramstage-$(CONFIG_SANDYBRIDGE_IVYBRIDGE_LVDS) += gma_ivybridge_lvds.c
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@ -37,7 +37,8 @@ Device (MCHC)
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MHEN, 1, // Enable
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, 13, //
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MHBR, 22, // MCHBAR
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Offset (0x54),
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DVEN, 32,
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Offset (0x60), // PCIe BAR
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PXEN, 1, // Enable
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PXSZ, 2, // BAR size
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@ -0,0 +1,79 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2017-2018 Patrick Rudolph <siro@das-labor.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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Device (PEGP)
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{
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Name (_ADR, 0x00010000)
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Method (_STA)
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{
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ShiftRight (\_SB.PCI0.MCHC.DVEN, 3, Local0)
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Return (And (Local0, 1))
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}
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Device (DEV0)
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{
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Name(_ADR, 0x00000000)
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}
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}
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Device (PEG1)
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{
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Name (_ADR, 0x00010001)
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Method (_STA)
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{
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ShiftRight (\_SB.PCI0.MCHC.DVEN, 2, Local0)
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Return (And (Local0, 1))
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}
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Device (DEV0)
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{
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Name(_ADR, 0x00000000)
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}
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}
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Device (PEG2)
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{
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Name (_ADR, 0x00010002)
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Method (_STA)
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{
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ShiftRight (\_SB.PCI0.MCHC.DVEN, 1, Local0)
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Return (And (Local0, 1))
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}
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Device (DEV0)
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{
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Name(_ADR, 0x00000000)
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}
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}
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Device (PEG6)
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{
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Name (_ADR, 0x00060000)
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Method (_STA)
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{
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ShiftRight (\_SB.PCI0.MCHC.DVEN, 13, Local0)
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Return (And (Local0, 1))
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}
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Device (DEV0)
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{
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Name(_ADR, 0x00000000)
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}
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}
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@ -2,6 +2,7 @@
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2007-2009 coresystems GmbH
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* Copyright (C) 2017-2018 Patrick Rudolph <siro@das-labor.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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@ -16,6 +17,7 @@
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#include "../sandybridge.h"
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#include "hostbridge.asl"
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#include "peg.asl"
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/* PCI Device Resource Consumption */
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Device (PDRC)
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@ -0,0 +1,105 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2017-2018 Patrick Rudolph <siro@das-labor.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <console/console.h>
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#include <device/device.h>
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#include <device/pci.h>
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#include <device/pciexp.h>
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#include <device/pci_ids.h>
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#include <assert.h>
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static void pcie_disable(struct device *dev)
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{
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printk(BIOS_INFO, "%s: Disabling device\n", dev_path(dev));
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dev->enabled = 0;
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}
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#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
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static const char *pcie_acpi_name(const struct device *dev)
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{
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assert(dev);
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if (dev->path.type != DEVICE_PATH_PCI)
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return NULL;
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assert(dev->bus);
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if (dev->bus->secondary == 0)
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switch (dev->path.pci.devfn) {
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case PCI_DEVFN(1, 0):
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return "PEGP";
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case PCI_DEVFN(1, 1):
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return "PEG1";
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case PCI_DEVFN(1, 2):
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return "PEG2";
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case PCI_DEVFN(6, 0):
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return "PEG6";
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};
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const device_t port = dev->bus->dev;
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assert(port);
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assert(port->bus);
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if (dev->path.pci.devfn == PCI_DEVFN(0, 0) &&
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port->bus->secondary == 0 &&
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(port->path.pci.devfn == PCI_DEVFN(1, 0) ||
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port->path.pci.devfn == PCI_DEVFN(1, 1) ||
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port->path.pci.devfn == PCI_DEVFN(1, 2) ||
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port->path.pci.devfn == PCI_DEVFN(6, 0)))
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return "DEV0";
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return NULL;
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}
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#endif
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static void
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pcie_set_subsystem(struct device *dev, unsigned int ven, unsigned int device)
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{
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/* NOTE: This is not the default position! */
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if (!ven || !device)
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pci_write_config32(dev, 0x94,
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pci_read_config32(dev, 0));
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else
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pci_write_config32(dev, 0x94,
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((device & 0xffff) << 16) | (ven & 0xffff));
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}
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static struct pci_operations pci_ops = {
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.set_subsystem = pcie_set_subsystem,
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};
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static struct device_operations device_ops = {
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.read_resources = pci_bus_read_resources,
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.set_resources = pci_dev_set_resources,
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.enable_resources = pci_bus_enable_resources,
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.scan_bus = pciexp_scan_bridge,
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.reset_bus = pci_bus_reset,
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.disable = pcie_disable,
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.init = pci_dev_init,
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.ops_pci = &pci_ops,
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#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
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.acpi_name = pcie_acpi_name,
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#endif
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};
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static const unsigned short pci_device_ids[] = { 0x0101, 0x0105, 0x0109, 0x010d,
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0x0151, 0x0155, 0x0159, 0x015d,
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0 };
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static const struct pci_driver pch_pcie __pci_driver = {
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.ops = &device_ops,
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.vendor = PCI_VENDOR_ID_INTEL,
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.devices = pci_device_ids,
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};
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