2007-04-22 21:08:13 +02:00
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/*
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2008-01-18 11:35:56 +01:00
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* This file is part of the coreboot project.
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2007-04-22 21:08:13 +02:00
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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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2009-03-06 20:11:52 +01:00
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* Copyright (C) 2009 coresystems GmbH
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2007-04-22 21:08:13 +02:00
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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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Remove address from GPLv2 headers
As per discussion with lawyers[tm], it's not a good idea to
shorten the license header too much - not for legal reasons
but because there are tools that look for them, and giving
them a standard pattern simplifies things.
However, we got confirmation that we don't have to update
every file ever added to coreboot whenever the FSF gets a
new lease, but can drop the address instead.
util/kconfig is excluded because that's imported code that
we may want to synchronize every now and then.
$ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} +
$ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} +
$ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} +
$ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} +
$ find * -type f
-a \! -name \*.patch \
-a \! -name \*_shipped \
-a \! -name LICENSE_GPL \
-a \! -name LGPL.txt \
-a \! -name COPYING \
-a \! -name DISCLAIMER \
-exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} +
Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/9233
Tested-by: build bot (Jenkins)
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-03-26 15:17:45 +01:00
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* Foundation, Inc.
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2007-04-22 21:08:13 +02:00
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*/
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2004-11-18 23:38:08 +01:00
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#include <console/console.h>
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#include <arch/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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2013-07-04 16:17:45 +02:00
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const struct pci_bus_operations *pci_bus_default_ops(device_t dev)
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{
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#if CONFIG_MMCONF_SUPPORT_DEFAULT
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return &pci_ops_mmconf;
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#else
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return &pci_cf8_conf1;
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#endif
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}
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2014-10-28 17:04:40 +01:00
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static const struct pci_bus_operations *pci_bus_ops(struct bus *bus, struct device *dev)
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2013-07-04 16:17:45 +02:00
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{
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const struct pci_bus_operations *bops;
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bops = NULL;
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if (bus && bus->dev && bus->dev->ops && bus->dev->ops->ops_pci_bus) {
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bops = bus->dev->ops->ops_pci_bus(dev);
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}
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if (!bops)
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bops = pci_bus_default_ops(dev);
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return bops;
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}
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2010-10-17 21:01:48 +02:00
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/*
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2013-07-04 16:17:45 +02:00
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* The only consumer of the return value of get_pbus() is pci_bus_ops().
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* pci_bus_ops() can handle being passed NULL and auto-picks working ops.
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If no pci access method has been set for the device tree so far (e.g.
during early coreboot_ram), pci_{read,write}_config{8,16,32} will die().
This patch changes pci_{read,write}_config{8,16,32} to use the existing
PCI access method autodetection infrastructure instead of die()ing.
Until r4340, any usage of pci_{read,write}_config{8,16,32} in
coreboot_ram before the device tree was set up resulted in either a
silent hang or a NULL pointer dereference. I changed the code in r4340
to die() properly with a loud error message. That still was not perfect,
but at least it allowed people to see why their new ports died.
Still, die() is not something developers like to see, and thus a patch
to automatically pick a sensible default instead of dying was created.
Of course, handling PCI access method selection automatically for
fallback purposes has certain limitations before the device tree is set
up. We only check if conf1 works and use conf2 as fallback. No further
tests are done.
This patch enables cleanups and readability improvements in early
coreboot_ram code:
Without this patch:
dword = pci_cf8_conf1.read32(&pbus, sm_dev->bus->secondary,
sm_dev->path.pci.devfn, 0x64);
With this patch:
dword = pci_read_config32(sm_dev, 0x64);
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4646 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-09-22 02:09:41 +02:00
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*/
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2014-10-28 17:04:40 +01:00
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static struct bus *get_pbus(struct device *dev)
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2004-11-18 23:38:08 +01:00
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{
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2009-07-21 23:36:41 +02:00
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struct bus *pbus = NULL;
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2009-03-26 22:45:26 +01:00
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if (!dev)
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2009-06-05 13:41:51 +02:00
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die("get_pbus: dev is NULL!\n");
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2009-07-21 23:36:41 +02:00
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else
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pbus = dev->bus;
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2009-03-26 22:45:26 +01:00
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2013-07-04 16:17:45 +02:00
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while (pbus && pbus->dev && !pci_bus_ops(pbus, dev)) {
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2009-03-05 20:33:12 +01:00
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if (pbus == pbus->dev->bus) {
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2010-11-05 00:23:47 +01:00
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printk(BIOS_ALERT, "%s in endless loop looking for a "
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2013-07-04 16:17:45 +02:00
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"parent bus with pci_bus_ops for %s, breaking "
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2010-11-05 00:23:47 +01:00
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"out.\n", __func__, dev_path(dev));
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2009-03-05 20:33:12 +01:00
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break;
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}
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2004-11-18 23:38:08 +01:00
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pbus = pbus->dev->bus;
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}
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2010-11-05 00:23:47 +01:00
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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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/* This can happen before the device tree is fully set up. */
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// printk(BIOS_EMERG, "%s: Cannot find PCI bus operations.\n",
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// dev_path(dev));
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If no pci access method has been set for the device tree so far (e.g.
during early coreboot_ram), pci_{read,write}_config{8,16,32} will die().
This patch changes pci_{read,write}_config{8,16,32} to use the existing
PCI access method autodetection infrastructure instead of die()ing.
Until r4340, any usage of pci_{read,write}_config{8,16,32} in
coreboot_ram before the device tree was set up resulted in either a
silent hang or a NULL pointer dereference. I changed the code in r4340
to die() properly with a loud error message. That still was not perfect,
but at least it allowed people to see why their new ports died.
Still, die() is not something developers like to see, and thus a patch
to automatically pick a sensible default instead of dying was created.
Of course, handling PCI access method selection automatically for
fallback purposes has certain limitations before the device tree is set
up. We only check if conf1 works and use conf2 as fallback. No further
tests are done.
This patch enables cleanups and readability improvements in early
coreboot_ram code:
Without this patch:
dword = pci_cf8_conf1.read32(&pbus, sm_dev->bus->secondary,
sm_dev->path.pci.devfn, 0x64);
With this patch:
dword = pci_read_config32(sm_dev, 0x64);
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4646 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-09-22 02:09:41 +02:00
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pbus = NULL;
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2004-11-18 23:38:08 +01:00
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}
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2010-11-05 00:23:47 +01:00
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2004-11-18 23:38:08 +01:00
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return pbus;
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}
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2014-10-28 17:04:40 +01:00
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u8 pci_read_config8(struct device *dev, unsigned int where)
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2004-11-18 23:38:08 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2013-07-04 16:17:45 +02:00
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return pci_bus_ops(pbus, dev)->read8(pbus, dev->bus->secondary,
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2010-11-05 00:23:47 +01:00
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dev->path.pci.devfn, where);
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2004-11-18 23:38:08 +01:00
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}
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2014-10-28 17:04:40 +01:00
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u16 pci_read_config16(struct device *dev, unsigned int where)
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2004-11-18 23:38:08 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2013-07-04 16:17:45 +02:00
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return pci_bus_ops(pbus, dev)->read16(pbus, dev->bus->secondary,
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2010-11-05 00:23:47 +01:00
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dev->path.pci.devfn, where);
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2004-11-18 23:38:08 +01:00
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}
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2014-10-28 17:04:40 +01:00
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u32 pci_read_config32(struct device *dev, unsigned int where)
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2004-11-18 23:38:08 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2013-07-04 16:17:45 +02:00
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return pci_bus_ops(pbus, dev)->read32(pbus, dev->bus->secondary,
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2010-11-05 00:23:47 +01:00
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dev->path.pci.devfn, where);
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2004-11-18 23:38:08 +01:00
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}
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2014-10-28 17:04:40 +01:00
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void pci_write_config8(struct device *dev, unsigned int where, u8 val)
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2004-11-18 23:38:08 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2013-07-04 16:17:45 +02:00
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pci_bus_ops(pbus, dev)->write8(pbus, dev->bus->secondary,
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2010-11-05 00:23:47 +01:00
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dev->path.pci.devfn, where, val);
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2004-11-18 23:38:08 +01:00
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}
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2014-10-28 17:04:40 +01:00
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void pci_write_config16(struct device *dev, unsigned int where, u16 val)
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2004-11-18 23:38:08 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2013-07-04 16:17:45 +02:00
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pci_bus_ops(pbus, dev)->write16(pbus, dev->bus->secondary,
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2010-11-05 00:23:47 +01:00
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dev->path.pci.devfn, where, val);
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2004-11-18 23:38:08 +01:00
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}
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2014-10-28 17:04:40 +01:00
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void pci_write_config32(struct device *dev, unsigned int where, u32 val)
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2004-11-18 23:38:08 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2013-07-04 16:17:45 +02:00
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pci_bus_ops(pbus, dev)->write32(pbus, dev->bus->secondary,
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2010-11-05 00:23:47 +01:00
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dev->path.pci.devfn, where, val);
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2004-11-18 23:38:08 +01:00
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}
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2009-03-06 20:11:52 +01:00
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2009-06-30 17:17:49 +02:00
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#if CONFIG_MMCONF_SUPPORT
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2014-10-28 17:04:40 +01:00
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u8 pci_mmio_read_config8(struct device *dev, unsigned int where)
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2009-03-06 20:11:52 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2010-11-05 00:23:47 +01:00
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return pci_ops_mmconf.read8(pbus, dev->bus->secondary,
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dev->path.pci.devfn, where);
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2009-03-06 20:11:52 +01:00
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}
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2014-10-28 17:04:40 +01:00
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u16 pci_mmio_read_config16(struct device *dev, unsigned int where)
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2009-03-06 20:11:52 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2010-11-05 00:23:47 +01:00
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return pci_ops_mmconf.read16(pbus, dev->bus->secondary,
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dev->path.pci.devfn, where);
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2009-03-06 20:11:52 +01:00
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}
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2014-10-28 17:04:40 +01:00
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u32 pci_mmio_read_config32(struct device *dev, unsigned int where)
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2009-03-06 20:11:52 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2010-11-05 00:23:47 +01:00
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return pci_ops_mmconf.read32(pbus, dev->bus->secondary,
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dev->path.pci.devfn, where);
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2009-03-06 20:11:52 +01:00
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}
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2014-10-28 17:04:40 +01:00
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void pci_mmio_write_config8(struct device *dev, unsigned int where, u8 val)
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2009-03-06 20:11:52 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2010-11-05 00:23:47 +01:00
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pci_ops_mmconf.write8(pbus, dev->bus->secondary, dev->path.pci.devfn,
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where, val);
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2009-03-06 20:11:52 +01:00
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}
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2014-10-28 17:04:40 +01:00
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void pci_mmio_write_config16(struct device *dev, unsigned int where, u16 val)
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2009-03-06 20:11:52 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2010-11-05 00:23:47 +01:00
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pci_ops_mmconf.write16(pbus, dev->bus->secondary, dev->path.pci.devfn,
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where, val);
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2009-03-06 20:11:52 +01:00
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}
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2014-10-28 17:04:40 +01:00
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void pci_mmio_write_config32(struct device *dev, unsigned int where, u32 val)
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2009-03-06 20:11:52 +01:00
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{
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struct bus *pbus = get_pbus(dev);
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2010-11-05 00:23:47 +01:00
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pci_ops_mmconf.write32(pbus, dev->bus->secondary, dev->path.pci.devfn,
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where, val);
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2009-03-06 20:11:52 +01:00
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}
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2010-11-05 00:23:47 +01:00
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2009-03-06 20:11:52 +01:00
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#endif
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