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https://github.com/fail0verflow/switch-coreboot.git
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77010a1111
readability. Move to anonymous unions. Build tested on all targets. Boot tested on qemu. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Ron tested this and it boots to Linux. Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/coreboot-v3@730 f3766cd6-281f-0410-b1cd-43a5c92072e9
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2004 Linux Networx
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* (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <console.h>
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#include <device/device.h>
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#include <pciconf.h>
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#include <device/pci.h>
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#include <device/pci_ids.h>
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#include <device/pci_ops.h>
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#include <types.h>
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/**
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* Walk up the tree from the current dev, in an attempt to find a
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* bus that has ops_pci_bus set. The assumption here being that if it
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* has ops_pci_bus set, then it can do bus operations.
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*/
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static struct bus *get_pbus(struct device *dev)
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{
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struct bus *pbus = dev->bus;
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while (pbus && pbus->dev && !ops_pci_bus(pbus)) {
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pbus = pbus->dev->bus;
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}
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if (!pbus || !pbus->dev || !pbus->dev->ops
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|| !pbus->dev->ops->ops_pci_bus) {
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printk(BIOS_ALERT, "%s: %s(%s) Cannot find PCI bus operations",
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__func__, dev->dtsname, dev_path(dev));
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die("");
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}
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return pbus;
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}
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u8 pci_read_config8(struct device *dev, unsigned int where)
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{
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struct bus *pbus = get_pbus(dev);
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return ops_pci_bus(pbus)->read8(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where);
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}
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u16 pci_read_config16(struct device *dev, unsigned int where)
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{
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struct bus *pbus = get_pbus(dev);
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return ops_pci_bus(pbus)->read16(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where);
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}
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u32 pci_read_config32(struct device *dev, unsigned int where)
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{
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struct bus *pbus = get_pbus(dev);
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return ops_pci_bus(pbus)->read32(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where);
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}
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void pci_write_config8(struct device *dev, unsigned int where, u8 val)
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{
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struct bus *pbus = get_pbus(dev);
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ops_pci_bus(pbus)->write8(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where, val);
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}
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void pci_write_config16(struct device *dev, unsigned int where, u16 val)
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{
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struct bus *pbus = get_pbus(dev);
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ops_pci_bus(pbus)->write16(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where, val);
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}
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void pci_write_config32(struct device *dev, unsigned int where, u32 val)
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{
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struct bus *pbus = get_pbus(dev);
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ops_pci_bus(pbus)->write32(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where, val);
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}
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