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This commit is contained in:
Tony Luck 2005-06-15 14:06:48 -07:00
commit f2cbb4f019
1219 changed files with 51568 additions and 22050 deletions
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13
CREDITS
View file

@ -339,7 +339,7 @@ W: http://tomas.nocrew.org/
D: dsp56k device driver
N: Ross Biro
E: bir7@leland.Stanford.Edu
E: ross.biro@gmail.com
D: Original author of the Linux networking code
N: Anton Blanchard
@ -882,13 +882,12 @@ S: Blacksburg, Virginia 24061
S: USA
N: Randy Dunlap
E: rddunlap@osdl.org
E: rdunlap@xenotime.net
W: http://www.xenotime.net/linux/linux.html
W: http://www.linux-usb.org
D: Linux-USB subsystem, USB core/UHCI/printer/storage drivers
D: x86 SMP, ACPI, bootflag hacking
S: 12725 SW Millikan Way, Suite 400
S: Beaverton, Oregon 97005
S: (ask for current address)
S: USA
N: Bob Dunlop
@ -2476,13 +2475,9 @@ S: Potsdam, New York 13676
S: USA
N: Dave Neuer
E: dneuer@innovation-charter.com
E: mr_fred_smoothie@yahoo.com
E: dave.neuer@pobox.com
D: Helped implement support for Compaq's H31xx series iPAQs
D: Other mostly minor tweaks & bugfixes
S: 325 E. Main St., Suite 3
S: Carnegie, PA 15105
S: USA
N: Michael Neuffer
E: mike@i-Connect.Net

2
Documentation/00-INDEX
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@ -12,8 +12,6 @@ Following translations are available on the WWW:
00-INDEX
- this file.
BK-usage/
- directory with info on BitKeeper.
BUG-HUNTING
- brute force method of doing binary search of patches to find bug.
Changes

51
Documentation/BK-usage/00-INDEX
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@ -1,51 +0,0 @@
bk-kernel-howto.txt: Description of kernel workflow under BitKeeper
bk-make-sum: Create summary of changesets in one repository and not
another, typically in preparation to be sent to an upstream maintainer.
Typical usage:
cd my-updated-repo
bk-make-sum ~/repo/original-repo
mv /tmp/linus.txt ../original-repo.txt
bksend: Create readable text output containing summary of changes, GNU
patch of the changes, and BK metadata of changes (as needed for proper
importing into BitKeeper by an upstream maintainer). This output is
suitable for emailing BitKeeper changes. The recipient of this output
may pipe it directly to 'bk receive'.
bz64wrap: helper script. Uncompressed input is piped to this script,
which compresses its input, and then outputs the uu-/base64-encoded
version of the compressed input.
cpcset: Copy changeset between unrelated repositories.
Attempts to preserve changeset user, user address, description, in
addition to the changeset (the patch) itself.
Typical usage:
cd my-updated-repo
bk changes # looking for a changeset...
cpcset 1.1511 . ../another-repo
csets-to-patches: Produces a delta of two BK repositories, in the form
of individual files, each containing a single cset as a GNU patch.
Output is several files, each with the filename "/tmp/rev-$REV.patch"
Typical usage:
cd my-updated-repo
bk changes -L ~/repo/original-repo 2>&1 | \
perl csets-to-patches
cset-to-linus: Produces a delta of two BK repositories, in the form of
changeset descriptions, with 'diffstat' output created for each
individual changset.
Typical usage:
cd my-updated-repo
bk changes -L ~/repo/original-repo 2>&1 | \
perl cset-to-linus > summary.txt
gcapatch: Generates patch containing changes in local repository.
Typical usage:
cd my-updated-repo
gcapatch > foo.patch
unbz64wrap: Reverse an encoded, compressed data stream created by
bz64wrap into an uncompressed, typically text/plain output.

283
Documentation/BK-usage/bk-kernel-howto.txt
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@ -1,283 +0,0 @@
Doing the BK Thing, Penguin-Style
This set of notes is intended mainly for kernel developers, occasional
or full-time, but sysadmins and power users may find parts of it useful
as well. It assumes at least a basic familiarity with CVS, both at a
user level (use on the cmd line) and at a higher level (client-server model).
Due to the author's background, an operation may be described in terms
of CVS, or in terms of how that operation differs from CVS.
This is -not- intended to be BitKeeper documentation. Always run
"bk help <command>" or in X "bk helptool <command>" for reference
documentation.
BitKeeper Concepts
------------------
In the true nature of the Internet itself, BitKeeper is a distributed
system. When applied to revision control, this means doing away with
client-server, and changing to a parent-child model... essentially
peer-to-peer. On the developer's end, this also represents a
fundamental disruption in the standard workflow of changes, commits,
and merges. You will need to take a few minutes to think about
how to best work under BitKeeper, and re-optimize things a bit.
In some sense it is a bit radical, because it might described as
tossing changes out into a maelstrom and having them magically
land at the right destination... but I'm getting ahead of myself.
Let's start with this progression:
Each BitKeeper source tree on disk is a repository unto itself.
Each repository has a parent (except the root/original, of course).
Each repository contains a set of a changesets ("csets").
Each cset is one or more changed files, bundled together.
Each tree is a repository, so all changes are checked into the local
tree. When a change is checked in, all modified files are grouped
into a logical unit, the changeset. Internally, BK links these
changesets in a tree, representing various converging and diverging
lines of development. These changesets are the bread and butter of
the BK system.
After the concept of changesets, the next thing you need to get used
to is having multiple copies of source trees lying around. This -really-
takes some getting used to, for some people. Separate source trees
are the means in BitKeeper by which you delineate parallel lines
of development, both minor and major. What would be branches in
CVS become separate source trees, or "clones" in BitKeeper [heh,
or Star Wars] terminology.
Clones and changesets are the tools from which most of the power of
BitKeeper is derived. As mentioned earlier, each clone has a parent,
the tree used as the source when the new clone was created. In a
CVS-like setup, the parent would be a remote server on the Internet,
and the child is your local clone of that tree.
Once you have established a common baseline between two source trees --
a common parent -- then you can merge changesets between those two
trees with ease. Merging changes into a tree is called a "pull", and
is analagous to 'cvs update'. A pull downloads all the changesets in
the remote tree you do not have, and merges them. Sending changes in
one tree to another tree is called a "push". Push sends all changes
in the local tree the remote does not yet have, and merges them.
From these concepts come some initial command examples:
1) bk clone -q http://linux.bkbits.net/linux-2.5 linus-2.5
Download a 2.5 stock kernel tree, naming it "linus-2.5" in the local dir.
The "-q" disables listing every single file as it is downloaded.
2) bk clone -ql linus-2.5 alpha-2.5
Create a separate source tree for the Alpha AXP architecture.
The "-l" uses hard links instead of copying data, since both trees are
on the local disk. You can also replace the above with "bk lclone -q ..."
You only clone a tree -once-. After cloning the tree lives a long time
on disk, being updating by pushes and pulls.
3) cd alpha-2.5 ; bk pull http://gkernel.bkbits.net/alpha-2.5
Download changes in "alpha-2.5" repository which are not present
in the local repository, and merge them into the source tree.
4) bk -r co -q
Because every tree is a repository, files must be checked out before
they will be in their standard places in the source tree.
5) bk vi fs/inode.c # example change...
bk citool # checkin, using X tool
bk push bk://gkernel@bkbits.net/alpha-2.5 # upload change
Typical example of a BK sequence that would replace the analagous CVS
situation,
vi fs/inode.c
cvs commit
As this is just supposed to be a quick BK intro, for more in-depth
tutorials, live working demos, and docs, see http://www.bitkeeper.com/
BK and Kernel Development Workflow
----------------------------------
Currently the latest 2.5 tree is available via "bk clone $URL"
and "bk pull $URL" at http://linux.bkbits.net/linux-2.5
This should change in a few weeks to a kernel.org URL.
A big part of using BitKeeper is organizing the various trees you have
on your local disk, and organizing the flow of changes among those
trees, and remote trees. If one were to graph the relationships between
a desired BK setup, you are likely to see a few-many-few graph, like
this:
linux-2.5
|
merge-to-linus-2.5
/ | |
/ | |
vm-hacks bugfixes filesys personal-hacks
\ | | /
\ | | /
\ | | /
testing-and-validation
Since a "bk push" sends all changes not in the target tree, and
since a "bk pull" receives all changes not in the source tree, you want
to make sure you are only pushing specific changes to the desired tree,
not all changes from "peer parent" trees. For example, pushing a change
from the testing-and-validation tree would probably be a bad idea,
because it will push all changes from vm-hacks, bugfixes, filesys, and
personal-hacks trees into the target tree.
One would typically work on only one "theme" at a time, either
vm-hacks or bugfixes or filesys, keeping those changes isolated in
their own tree during development, and only merge the isolated with
other changes when going upstream (to Linus or other maintainers) or
downstream (to your "union" trees, like testing-and-validation above).
It should be noted that some of this separation is not just recommended
practice, it's actually [for now] -enforced- by BitKeeper. BitKeeper
requires that changesets maintain a certain order, which is the reason
that "bk push" sends all local changesets the remote doesn't have. This
separation may look like a lot of wasted disk space at first, but it
helps when two unrelated changes may "pollute" the same area of code, or
don't follow the same pace of development, or any other of the standard
reasons why one creates a development branch.
Small development branches (clones) will appear and disappear:
-------- A --------- B --------- C --------- D -------
\ /
-----short-term devel branch-----
While long-term branches will parallel a tree (or trees), with period
merge points. In this first example, we pull from a tree (pulls,
"\") periodically, such as what occurs when tracking changes in a
vendor tree, never pushing changes back up the line:
-------- A --------- B --------- C --------- D -------
\ \ \
----long-term devel branch-----------------
And then a more common case in Linux kernel development, a long term
branch with periodic merges back into the tree (pushes, "/"):
-------- A --------- B --------- C --------- D -------
\ \ / \
----long-term devel branch-----------------
Submitting Changes to Linus
---------------------------
There's a bit of an art, or style, of submitting changes to Linus.
Since Linus's tree is now (you might say) fully integrated into the
distributed BitKeeper system, there are several prerequisites to
properly submitting a BitKeeper change. All these prereq's are just
general cleanliness of BK usage, so as people become experts at BK, feel
free to optimize this process further (assuming Linus agrees, of
course).
0) Make sure your tree was originally cloned from the linux-2.5 tree
created by Linus. If your tree does not have this as its ancestor, it
is impossible to reliably exchange changesets.
1) Pay attention to your commit text. The commit message that
accompanies each changeset you submit will live on forever in history,
and is used by Linus to accurately summarize the changes in each
pre-patch. Remember that there is no context, so
"fix for new scheduler changes"
would be too vague, but
"fix mips64 arch for new scheduler switch_to(), TIF_xxx semantics"
would be much better.
You can and should use the command "bk comment -C<rev>" to update the
commit text, and improve it after the fact. This is very useful for
development: poor, quick descriptions during development, which get
cleaned up using "bk comment" before issuing the "bk push" to submit the
changes.
2) Include an Internet-available URL for Linus to pull from, such as
Pull from: http://gkernel.bkbits.net/net-drivers-2.5
3) Include a summary and "diffstat -p1" of each changeset that will be
downloaded, when Linus issues a "bk pull". The author auto-generates
these summaries using "bk changes -L <parent>", to obtain a listing
of all the pending-to-send changesets, and their commit messages.
It is important to show Linus what he will be downloading when he issues
a "bk pull", to reduce the time required to sift the changes once they
are downloaded to Linus's local machine.
IMPORTANT NOTE: One of the features of BK is that your repository does
not have to be up to date, in order for Linus to receive your changes.
It is considered a courtesy to keep your repository fairly recent, to
lessen any potential merge work Linus may need to do.
4) Split up your changes. Each maintainer<->Linus situation is likely
to be slightly different here, so take this just as general advice. The
author splits up changes according to "themes" when merging with Linus.
Simultaneous pushes from local development go to special trees which
exist solely to house changes "queued" for Linus. Example of the trees:
net-drivers-2.5 -- on-going net driver maintenance
vm-2.5 -- VM-related changes
fs-2.5 -- filesystem-related changes
Linus then has much more freedom for pulling changes. He could (for
example) issue a "bk pull" on vm-2.5 and fs-2.5 trees, to merge their
changes, but hold off net-drivers-2.5 because of a change that needs
more discussion.
Other maintainers may find that a single linus-pull-from tree is
adequate for passing BK changesets to him.
Frequently Answered Questions
-----------------------------
1) How do I change the e-mail address shown in the changelog?
A. When you run "bk citool" or "bk commit", set environment
variables BK_USER and BK_HOST to the desired username
and host/domain name.
2) How do I use tags / get a diff between two kernel versions?
A. Pass the tags Linus uses to 'bk export'.
ChangeSets are in a forward-progressing order, so it's pretty easy
to get a snapshot starting and ending at any two points in time.
Linus puts tags on each release and pre-release, so you could use
these two examples:
bk export -tpatch -hdu -rv2.5.4,v2.5.5 | less
# creates patch-2.5.5 essentially
bk export -tpatch -du -rv2.5.5-pre1,v2.5.5 | less
# changes from pre1 to final
A tag is just an alias for a specific changeset... and since changesets
are ordered, a tag is thus a marker for a specific point in time (or
specific state of the tree).
3) Is there an easy way to generate One Big Patch versus mainline,
for my long-lived kernel branch?
A. Yes. This requires BK 3.x, though.
bk export -tpatch -r`bk repogca bk://linux.bkbits.net/linux-2.5`,+

34
Documentation/BK-usage/bk-make-sum
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@ -1,34 +0,0 @@
#!/bin/sh -e
# DIR=$HOME/BK/axp-2.5
# cd $DIR
LINUS_REPO=$1
DIRBASE=`basename $PWD`
{
cat <<EOT
Please do a
bk pull bk://gkernel.bkbits.net/$DIRBASE
This will update the following files:
EOT
bk export -tpatch -hdu -r`bk repogca $LINUS_REPO`,+ | diffstat -p1 2>/dev/null
cat <<EOT
through these ChangeSets:
EOT
bk changes -L -d'$unless(:MERGE:){ChangeSet|:CSETREV:\n}' $LINUS_REPO |
bk -R prs -h -d'$unless(:MERGE:){<:P:@:HOST:> (:D: :I:)\n$each(:C:){ (:C:)\n}\n}' -
} > /tmp/linus.txt
cat <<EOT
Mail text in /tmp/linus.txt; please check and send using your favourite
mailer.
EOT

36
Documentation/BK-usage/bksend
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@ -1,36 +0,0 @@
#!/bin/sh
# A script to format BK changeset output in a manner that is easy to read.
# Andreas Dilger <adilger@turbolabs.com> 13/02/2002
#
# Add diffstat output after Changelog <adilger@turbolabs.com> 21/02/2002
PROG=bksend
usage() {
echo "usage: $PROG -r<rev>"
echo -e "\twhere <rev> is of the form '1.23', '1.23..', '1.23..1.27',"
echo -e "\tor '+' to indicate the most recent revision"
exit 1
}
case $1 in
-r) REV=$2; shift ;;
-r*) REV=`echo $1 | sed 's/^-r//'` ;;
*) echo "$PROG: no revision given, you probably don't want that";;
esac
[ -z "$REV" ] && usage
echo "You can import this changeset into BK by piping this whole message to:"
echo "'| bk receive [path to repository]' or apply the patch as usual."
SEP="\n===================================================================\n\n"
echo -e $SEP
env PAGER=/bin/cat bk changes -r$REV
echo
bk export -tpatch -du -h -r$REV | diffstat
echo; echo
bk export -tpatch -du -h -r$REV
echo -e $SEP
bk send -wgzip_uu -r$REV -

41
Documentation/BK-usage/bz64wrap
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@ -1,41 +0,0 @@
#!/bin/sh
# bz64wrap - the sending side of a bzip2 | base64 stream
# Andreas Dilger <adilger@clusterfs.com> Jan 2002
PATH=$PATH:/usr/bin:/usr/local/bin:/usr/freeware/bin
# A program to generate base64 encoding on stdout
BASE64_ENCODE="uuencode -m /dev/stdout"
BASE64_BEGIN=
BASE64_END=
BZIP=NO
BASE64=NO
# Test if we have the bzip program installed
bzip2 -c /dev/null > /dev/null 2>&1 && BZIP=YES
# Test if uuencode can handle the -m (MIME) encoding option
$BASE64_ENCODE < /dev/null > /dev/null 2>&1 && BASE64=YES
if [ $BASE64 = NO ]; then
BASE64_ENCODE=mimencode
BASE64_BEGIN="begin-base64 644 -"
BASE64_END="===="
$BASE64_ENCODE < /dev/null > /dev/null 2>&1 && BASE64=YES
fi
if [ $BZIP = NO -o $BASE64 = NO ]; then
echo "$0: can't use bz64 encoding: bzip2=$BZIP, $BASE64_ENCODE=$BASE64"
exit 1
fi
# Sadly, mimencode does not appear to have good "begin" and "end" markers
# like uuencode does, and it is picky about getting the right start/end of
# the base64 stream, so we handle this internally.
echo "$BASE64_BEGIN"
bzip2 -9 | $BASE64_ENCODE
echo "$BASE64_END"

36
Documentation/BK-usage/cpcset
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@ -1,36 +0,0 @@
#!/bin/sh
#
# Purpose: Copy changeset patch and description from one
# repository to another, unrelated one.
#
# usage: cpcset [revision] [from-repository] [to-repository]
#
REV=$1
FROM=$2
TO=$3
TMPF=/tmp/cpcset.$$
rm -f $TMPF*
CWD_SAVE=`pwd`
cd $FROM
bk changes -r$REV | \
grep -v '^ChangeSet' | \
sed -e 's/^ //g' > $TMPF.log
USERHOST=`bk changes -r$REV | grep '^ChangeSet' | awk '{print $4}'`
export BK_USER=`echo $USERHOST | awk '-F@' '{print $1}'`
export BK_HOST=`echo $USERHOST | awk '-F@' '{print $2}'`
bk export -tpatch -hdu -r$REV > $TMPF.patch && \
cd $CWD_SAVE && \
cd $TO && \
bk import -tpatch -CFR -y"`cat $TMPF.log`" $TMPF.patch . && \
bk commit -y"`cat $TMPF.log`"
rm -f $TMPF*
echo changeset $REV copied.
echo ""

49
Documentation/BK-usage/cset-to-linus
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@ -1,49 +0,0 @@
#!/usr/bin/perl -w
use strict;
my ($lhs, $rev, $tmp, $rhs, $s);
my @cset_text = ();
my @pipe_text = ();
my $have_cset = 0;
while (<>) {
next if /^---/;
if (($lhs, $tmp, $rhs) = (/^(ChangeSet\@)([^,]+)(, .*)$/)) {
&cset_rev if ($have_cset);
$rev = $tmp;
$have_cset = 1;
push(@cset_text, $_);
}
elsif ($have_cset) {
push(@cset_text, $_);
}
}
&cset_rev if ($have_cset);
exit(0);
sub cset_rev {
my $empty_cset = 0;
open PIPE, "bk export -tpatch -hdu -r $rev | diffstat -p1 2>/dev/null |" or die;
while ($s = <PIPE>) {
$empty_cset = 1 if ($s =~ /0 files changed/);
push(@pipe_text, $s);
}
close(PIPE);
if (! $empty_cset) {
print @cset_text;
print @pipe_text;
print "\n\n";
}
@pipe_text = ();
@cset_text = ();
}

44
Documentation/BK-usage/csets-to-patches
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@ -1,44 +0,0 @@
#!/usr/bin/perl -w
use strict;
my ($lhs, $rev, $tmp, $rhs, $s);
my @cset_text = ();
my @pipe_text = ();
my $have_cset = 0;
while (<>) {
next if /^---/;
if (($lhs, $tmp, $rhs) = (/^(ChangeSet\@)([^,]+)(, .*)$/)) {
&cset_rev if ($have_cset);
$rev = $tmp;
$have_cset = 1;
push(@cset_text, $_);
}
elsif ($have_cset) {
push(@cset_text, $_);
}
}
&cset_rev if ($have_cset);
exit(0);
sub cset_rev {
my $empty_cset = 0;
system("bk export -tpatch -du -r $rev > /tmp/rev-$rev.patch");
if (! $empty_cset) {
print @cset_text;
print @pipe_text;
print "\n\n";
}
@pipe_text = ();
@cset_text = ();
}

8
Documentation/BK-usage/gcapatch
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@ -1,8 +0,0 @@
#!/bin/sh
#
# Purpose: Generate GNU diff of local changes versus canonical top-of-tree
#
# Usage: gcapatch > foo.patch
#
bk export -tpatch -hdu -r`bk repogca bk://linux.bkbits.net/linux-2.5`,+

25
Documentation/BK-usage/unbz64wrap
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@ -1,25 +0,0 @@
#!/bin/sh
# unbz64wrap - the receiving side of a bzip2 | base64 stream
# Andreas Dilger <adilger@clusterfs.com> Jan 2002
# Sadly, mimencode does not appear to have good "begin" and "end" markers
# like uuencode does, and it is picky about getting the right start/end of
# the base64 stream, so we handle this explicitly here.
PATH=$PATH:/usr/bin:/usr/local/bin:/usr/freeware/bin
if mimencode -u < /dev/null > /dev/null 2>&1 ; then
SHOW=
while read LINE; do
case $LINE in
begin-base64*) SHOW=YES ;;
====) SHOW= ;;
*) [ "$SHOW" ] && echo "$LINE" ;;
esac
done | mimencode -u | bunzip2
exit $?
else
cat - | uudecode -o /dev/stdout | bunzip2
exit $?
fi

158
Documentation/DocBook/libata.tmpl
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@ -14,7 +14,7 @@
</authorgroup>
<copyright>
<year>2003</year>
<year>2003-2005</year>
<holder>Jeff Garzik</holder>
</copyright>
@ -44,30 +44,38 @@
<toc></toc>
<chapter id="libataThanks">
<title>Thanks</title>
<chapter id="libataIntroduction">
<title>Introduction</title>
<para>
The bulk of the ATA knowledge comes thanks to long conversations with
Andre Hedrick (www.linux-ide.org).
libATA is a library used inside the Linux kernel to support ATA host
controllers and devices. libATA provides an ATA driver API, class
transports for ATA and ATAPI devices, and SCSI&lt;-&gt;ATA translation
for ATA devices according to the T10 SAT specification.
</para>
<para>
Thanks to Alan Cox for pointing out similarities
between SATA and SCSI, and in general for motivation to hack on
libata.
</para>
<para>
libata's device detection
method, ata_pio_devchk, and in general all the early probing was
based on extensive study of Hale Landis's probe/reset code in his
ATADRVR driver (www.ata-atapi.com).
This Guide documents the libATA driver API, library functions, library
internals, and a couple sample ATA low-level drivers.
</para>
</chapter>
<chapter id="libataDriverApi">
<title>libata Driver API</title>
<para>
struct ata_port_operations is defined for every low-level libata
hardware driver, and it controls how the low-level driver
interfaces with the ATA and SCSI layers.
</para>
<para>
FIS-based drivers will hook into the system with ->qc_prep() and
->qc_issue() high-level hooks. Hardware which behaves in a manner
similar to PCI IDE hardware may utilize several generic helpers,
defining at a bare minimum the bus I/O addresses of the ATA shadow
register blocks.
</para>
<sect1>
<title>struct ata_port_operations</title>
<sect2><title>Disable ATA port</title>
<programlisting>
void (*port_disable) (struct ata_port *);
</programlisting>
@ -78,6 +86,9 @@ void (*port_disable) (struct ata_port *);
unplug).
</para>
</sect2>
<sect2><title>Post-IDENTIFY device configuration</title>
<programlisting>
void (*dev_config) (struct ata_port *, struct ata_device *);
</programlisting>
@ -88,6 +99,9 @@ void (*dev_config) (struct ata_port *, struct ata_device *);
issue of SET FEATURES - XFER MODE, and prior to operation.
</para>
</sect2>
<sect2><title>Set PIO/DMA mode</title>
<programlisting>
void (*set_piomode) (struct ata_port *, struct ata_device *);
void (*set_dmamode) (struct ata_port *, struct ata_device *);
@ -108,6 +122,9 @@ void (*post_set_mode) (struct ata_port *ap);
->set_dma_mode() is only called if DMA is possible.
</para>
</sect2>
<sect2><title>Taskfile read/write</title>
<programlisting>
void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
@ -120,6 +137,9 @@ void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
taskfile register values.
</para>
</sect2>
<sect2><title>ATA command execute</title>
<programlisting>
void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
</programlisting>
@ -129,17 +149,37 @@ void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
->tf_load(), to be initiated in hardware.
</para>
</sect2>
<sect2><title>Per-cmd ATAPI DMA capabilities filter</title>
<programlisting>
u8 (*check_status)(struct ata_port *ap);
void (*dev_select)(struct ata_port *ap, unsigned int device);
int (*check_atapi_dma) (struct ata_queued_cmd *qc);
</programlisting>
<para>
Reads the Status ATA shadow register from hardware. On some
hardware, this has the side effect of clearing the interrupt
condition.
Allow low-level driver to filter ATA PACKET commands, returning a status
indicating whether or not it is OK to use DMA for the supplied PACKET
command.
</para>
</sect2>
<sect2><title>Read specific ATA shadow registers</title>
<programlisting>
u8 (*check_status)(struct ata_port *ap);
u8 (*check_altstatus)(struct ata_port *ap);
u8 (*check_err)(struct ata_port *ap);
</programlisting>
<para>
Reads the Status/AltStatus/Error ATA shadow register from
hardware. On some hardware, reading the Status register has
the side effect of clearing the interrupt condition.
</para>
</sect2>
<sect2><title>Select ATA device on bus</title>
<programlisting>
void (*dev_select)(struct ata_port *ap, unsigned int device);
</programlisting>
@ -147,9 +187,13 @@ void (*dev_select)(struct ata_port *ap, unsigned int device);
<para>
Issues the low-level hardware command(s) that causes one of N
hardware devices to be considered 'selected' (active and
available for use) on the ATA bus.
available for use) on the ATA bus. This generally has no
meaning on FIS-based devices.
</para>
</sect2>
<sect2><title>Reset ATA bus</title>
<programlisting>
void (*phy_reset) (struct ata_port *ap);
</programlisting>
@ -162,17 +206,31 @@ void (*phy_reset) (struct ata_port *ap);
functions ata_bus_reset() or sata_phy_reset() for this hook.
</para>
</sect2>
<sect2><title>Control PCI IDE BMDMA engine</title>
<programlisting>
void (*bmdma_setup) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
void (*bmdma_stop) (struct ata_port *ap);
u8 (*bmdma_status) (struct ata_port *ap);
</programlisting>
<para>
When setting up an IDE BMDMA transaction, these hooks arm
(->bmdma_setup) and fire (->bmdma_start) the hardware's DMA
engine.
When setting up an IDE BMDMA transaction, these hooks arm
(->bmdma_setup), fire (->bmdma_start), and halt (->bmdma_stop)
the hardware's DMA engine. ->bmdma_status is used to read the standard
PCI IDE DMA Status register.
</para>
<para>
These hooks are typically either no-ops, or simply not implemented, in
FIS-based drivers.
</para>
</sect2>
<sect2><title>High-level taskfile hooks</title>
<programlisting>
void (*qc_prep) (struct ata_queued_cmd *qc);
int (*qc_issue) (struct ata_queued_cmd *qc);
@ -190,20 +248,26 @@ int (*qc_issue) (struct ata_queued_cmd *qc);
->qc_issue is used to make a command active, once the hardware
and S/G tables have been prepared. IDE BMDMA drivers use the
helper function ata_qc_issue_prot() for taskfile protocol-based
dispatch. More advanced drivers roll their own ->qc_issue
implementation, using this as the "issue new ATA command to
hardware" hook.
dispatch. More advanced drivers implement their own ->qc_issue.
</para>
</sect2>
<sect2><title>Timeout (error) handling</title>
<programlisting>
void (*eng_timeout) (struct ata_port *ap);
</programlisting>
<para>
This is a high level error handling function, called from the
error handling thread, when a command times out.
This is a high level error handling function, called from the
error handling thread, when a command times out. Most newer
hardware will implement its own error handling code here. IDE BMDMA
drivers may use the helper function ata_eng_timeout().
</para>
</sect2>
<sect2><title>Hardware interrupt handling</title>
<programlisting>
irqreturn_t (*irq_handler)(int, void *, struct pt_regs *);
void (*irq_clear) (struct ata_port *);
@ -216,6 +280,9 @@ void (*irq_clear) (struct ata_port *);
is quiet.
</para>
</sect2>
<sect2><title>SATA phy read/write</title>
<programlisting>
u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg);
void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
@ -227,6 +294,9 @@ void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
if ->phy_reset hook called the sata_phy_reset() helper function.
</para>
</sect2>
<sect2><title>Init and shutdown</title>
<programlisting>
int (*port_start) (struct ata_port *ap);
void (*port_stop) (struct ata_port *ap);
@ -240,15 +310,17 @@ void (*host_stop) (struct ata_host_set *host_set);
tasks.
</para>
<para>
->host_stop() is called when the rmmod or hot unplug process
begins. The hook must stop all hardware interrupts, DMA
engines, etc.
</para>
<para>
->port_stop() is called after ->host_stop(). It's sole function
is to release DMA/memory resources, now that they are no longer
actively being used.
</para>
<para>
->host_stop() is called after all ->port_stop() calls
have completed. The hook must finalize hardware shutdown, release DMA
and other resources, etc.
</para>
</sect2>
</sect1>
</chapter>
@ -279,4 +351,24 @@ void (*host_stop) (struct ata_host_set *host_set);
!Idrivers/scsi/sata_sil.c
</chapter>
<chapter id="libataThanks">
<title>Thanks</title>
<para>
The bulk of the ATA knowledge comes thanks to long conversations with
Andre Hedrick (www.linux-ide.org), and long hours pondering the ATA
and SCSI specifications.
</para>
<para>
Thanks to Alan Cox for pointing out similarities
between SATA and SCSI, and in general for motivation to hack on
libata.
</para>
<para>
libata's device detection
method, ata_pio_devchk, and in general all the early probing was
based on extensive study of Hale Landis's probe/reset code in his
ATADRVR driver (www.ata-atapi.com).
</para>
</chapter>
</book>

8
Documentation/SubmittingPatches
View file

@ -271,7 +271,7 @@ patch, which certifies that you wrote it or otherwise have the right to
pass it on as a open-source patch. The rules are pretty simple: if you
can certify the below:
Developer's Certificate of Origin 1.0
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
@ -291,6 +291,12 @@ can certify the below:
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
then you just add a line saying
Signed-off-by: Random J Developer <random@developer.org>

40
Documentation/aoe/aoe.txt
View file

@ -4,6 +4,16 @@ The EtherDrive (R) HOWTO for users of 2.6 kernels is found at ...
It has many tips and hints!
The aoetools are userland programs that are designed to work with this
driver. The aoetools are on sourceforge.
http://aoetools.sourceforge.net/
The scripts in this Documentation/aoe directory are intended to
document the use of the driver and are not necessary if you install
the aoetools.
CREATING DEVICE NODES
Users of udev should find the block device nodes created
@ -35,14 +45,15 @@ USING DEVICE NODES
"echo eth2 eth4 > /dev/etherd/interfaces" tells the aoe driver to
limit ATA over Ethernet traffic to eth2 and eth4. AoE traffic from
untrusted networks should be ignored as a matter of security.
untrusted networks should be ignored as a matter of security. See
also the aoe_iflist driver option described below.
"echo > /dev/etherd/discover" tells the driver to find out what AoE
devices are available.
These character devices may disappear and be replaced by sysfs
counterparts, so distribution maintainers are encouraged to create
scripts that use these devices.
counterparts. Using the commands in aoetools insulates users from
these implementation details.
The block devices are named like this:
@ -66,7 +77,8 @@ USING SYSFS
through which we are communicating with the remote AoE device.
There is a script in this directory that formats this information
in a convenient way.
in a convenient way. Users with aoetools can use the aoe-stat
command.
root@makki root# sh Documentation/aoe/status.sh
e10.0 eth3 up
@ -89,3 +101,23 @@ USING SYSFS
e4.7 eth1 up
e4.8 eth1 up
e4.9 eth1 up
Use /sys/module/aoe/parameters/aoe_iflist (or better, the driver
option discussed below) instead of /dev/etherd/interfaces to limit
AoE traffic to the network interfaces in the given
whitespace-separated list. Unlike the old character device, the
sysfs entry can be read from as well as written to.
It's helpful to trigger discovery after setting the list of allowed
interfaces. The aoetools package provides an aoe-discover script
for this purpose. You can also directly use the
/dev/etherd/discover special file described above.
DRIVER OPTIONS
There is a boot option for the built-in aoe driver and a
corresponding module parameter, aoe_iflist. Without this option,
all network interfaces may be used for ATA over Ethernet. Here is a
usage example for the module parameter.
modprobe aoe_iflist="eth1 eth3"

4
Documentation/aoe/status.sh
View file

@ -14,10 +14,6 @@ test ! -d "$sysd/block" && {
echo "$me Error: sysfs is not mounted" 1>&2
exit 1
}
test -z "`lsmod | grep '^aoe'`" && {
echo "$me Error: aoe module is not loaded" 1>&2
exit 1
}
for d in `ls -d $sysd/block/etherd* 2>/dev/null | grep -v p` end; do
# maybe ls comes up empty, so we use "end"

128
Documentation/cpu-freq/cpufreq-stats.txt Normal file
View file

@ -0,0 +1,128 @@
CPU frequency and voltage scaling statictics in the Linux(TM) kernel
L i n u x c p u f r e q - s t a t s d r i v e r
- information for users -
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Contents
1. Introduction
2. Statistics Provided (with example)
3. Configuring cpufreq-stats
1. Introduction
cpufreq-stats is a driver that provices CPU frequency statistics for each CPU.
This statistics is provided in /sysfs as a bunch of read_only interfaces. This
interface (when configured) will appear in a seperate directory under cpufreq
in /sysfs (<sysfs root>/devices/system/cpu/cpuX/cpufreq/stats/) for each CPU.
Various statistics will form read_only files under this directory.
This driver is designed to be independent of any particular cpufreq_driver
that may be running on your CPU. So, it will work with any cpufreq_driver.
2. Statistics Provided (with example)
cpufreq stats provides following statistics (explained in detail below).
- time_in_state
- total_trans
- trans_table
All the statistics will be from the time the stats driver has been inserted
to the time when a read of a particular statistic is done. Obviously, stats
driver will not have any information about the the frequcny transitions before
the stats driver insertion.
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # ls -l
total 0
drwxr-xr-x 2 root root 0 May 14 16:06 .
drwxr-xr-x 3 root root 0 May 14 15:58 ..
-r--r--r-- 1 root root 4096 May 14 16:06 time_in_state
-r--r--r-- 1 root root 4096 May 14 16:06 total_trans
-r--r--r-- 1 root root 4096 May 14 16:06 trans_table
--------------------------------------------------------------------------------
- time_in_state
This gives the amount of time spent in each of the frequencies supported by
this CPU. The cat output will have "<frequency> <time>" pair in each line, which
will mean this CPU spent <time> usertime units of time at <frequency>. Output
will have one line for each of the supported freuencies. usertime units here
is 10mS (similar to other time exported in /proc).
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat time_in_state
3600000 2089
3400000 136
3200000 34
3000000 67
2800000 172488
--------------------------------------------------------------------------------
- total_trans
This gives the total number of frequency transitions on this CPU. The cat
output will have a single count which is the total number of frequency
transitions.
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat total_trans
20
--------------------------------------------------------------------------------
- trans_table
This will give a fine grained information about all the CPU frequency
transitions. The cat output here is a two dimensional matrix, where an entry
<i,j> (row i, column j) represents the count of number of transitions from
Freq_i to Freq_j. Freq_i is in descending order with increasing rows and
Freq_j is in descending order with increasing columns. The output here also
contains the actual freq values for each row and column for better readability.
--------------------------------------------------------------------------------
<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat trans_table
From : To
: 3600000 3400000 3200000 3000000 2800000
3600000: 0 5 0 0 0
3400000: 4 0 2 0 0
3200000: 0 1 0 2 0
3000000: 0 0 1 0 3
2800000: 0 0 0 2 0
--------------------------------------------------------------------------------
3. Configuring cpufreq-stats
To configure cpufreq-stats in your kernel
Config Main Menu
Power management options (ACPI, APM) --->
CPU Frequency scaling --->
[*] CPU Frequency scaling
<*> CPU frequency translation statistics
[*] CPU frequency translation statistics details
"CPU Frequency scaling" (CONFIG_CPU_FREQ) should be enabled to configure
cpufreq-stats.
"CPU frequency translation statistics" (CONFIG_CPU_FREQ_STAT) provides the
basic statistics which includes time_in_state and total_trans.
"CPU frequency translation statistics details" (CONFIG_CPU_FREQ_STAT_DETAILS)
provides fine grained cpufreq stats by trans_table. The reason for having a
seperate config option for trans_table is:
- trans_table goes against the traditional /sysfs rule of one value per
interface. It provides a whole bunch of value in a 2 dimensional matrix
form.
Once these two options are enabled and your CPU supports cpufrequency, you
will be able to see the CPU frequency statistics in /sysfs.

3
Documentation/cpusets.txt
View file

@ -252,8 +252,7 @@ in a tasks processor placement.
There is an exception to the above. If hotplug funtionality is used
to remove all the CPUs that are currently assigned to a cpuset,
then the kernel will automatically update the cpus_allowed of all
tasks attached to CPUs in that cpuset with the online CPUs of the
nearest parent cpuset that still has some CPUs online. When memory
tasks attached to CPUs in that cpuset to allow all CPUs. When memory
hotplug functionality for removing Memory Nodes is available, a
similar exception is expected to apply there as well. In general,
the kernel prefers to violate cpuset placement, over starving a task

3
Documentation/dontdiff
View file

@ -27,6 +27,7 @@
*.so
*.tex
*.ver
*.xml
*_MODULES
*_vga16.c
*cscope*
@ -110,6 +111,7 @@ mkdep
mktables
modpost
modversions.h*
offsets.h
oui.c*
parse.c*
parse.h*
@ -134,4 +136,5 @@ vmlinux-*
vmlinux.lds
vsyscall.lds
wanxlfw.inc
uImage
zImage

205
Documentation/dvb/README.flexcop Normal file
View file

@ -0,0 +1,205 @@
This README escorted the skystar2-driver rewriting procedure. It describes the
state of the new flexcop-driver set and some internals are written down here
too.
This document hopefully describes things about the flexcop and its
device-offsprings. Goal was to write an easy-to-write and easy-to-read set of
drivers based on the skystar2.c and other information.
Remark: flexcop-pci.c was a copy of skystar2.c, but every line has been
touched and rewritten.
History & News
==============
2005-04-01 - correct USB ISOC transfers (thanks to Vadim Catana)
General coding processing
=========================
We should proceed as follows (as long as no one complains):
0) Think before start writing code!
1) rewriting the skystar2.c with the help of the flexcop register descriptions
and splitting up the files to a pci-bus-part and a flexcop-part.
The new driver will be called b2c2-flexcop-pci.ko/b2c2-flexcop-usb.ko for the
device-specific part and b2c2-flexcop.ko for the common flexcop-functions.
2) Search for errors in the leftover of flexcop-pci.c (compare with pluto2.c
and other pci drivers)
3) make some beautification (see 'Improvements when rewriting (refactoring) is
done')
4) Testing the new driver and maybe substitute the skystar2.c with it, to reach
a wider tester audience.
5) creating an usb-bus-part using the already written flexcop code for the pci
card.
Idea: create a kernel-object for the flexcop and export all important
functions. This option saves kernel-memory, but maybe a lot of functions have
to be exported to kernel namespace.
Current situation
=================
0) Done :)
1) Done (some minor issues left)
2) Done
3) Not ready yet, more information is necessary
4) next to be done (see the table below)
5) USB driver is working (yes, there are some minor issues)
What seems to be ready?
-----------------------
1) Rewriting
1a) i2c is cut off from the flexcop-pci.c and seems to work
1b) moved tuner and demod stuff from flexcop-pci.c to flexcop-tuner-fe.c
1c) moved lnb and diseqc stuff from flexcop-pci.c to flexcop-tuner-fe.c
1e) eeprom (reading MAC address)
1d) sram (no dynamic sll size detection (commented out) (using default as JJ told me))
1f) misc. register accesses for reading parameters (e.g. resetting, revision)
1g) pid/mac filter (flexcop-hw-filter.c)
1i) dvb-stuff initialization in flexcop.c (done)
1h) dma stuff (now just using the size-irq, instead of all-together, to be done)
1j) remove flexcop initialization from flexcop-pci.c completely (done)
1l) use a well working dma IRQ method (done, see 'Known bugs and problems and TODO')
1k) cleanup flexcop-files (remove unused EXPORT_SYMBOLs, make static from
non-static where possible, moved code to proper places)
2) Search for errors in the leftover of flexcop-pci.c (partially done)
5a) add MAC address reading
5c) feeding of ISOC data to the software demux (format of the isochronous data
and speed optimization, no real error) (thanks to Vadim Catana)
What to do in the near future?
--------------------------------------
(no special order here)
5) USB driver
5b) optimize isoc-transfer (submitting/killing isoc URBs when transfer is starting)
Testing changes
---------------
O = item is working
P = item is partially working
X = item is not working
N = item does not apply here
<empty field> = item need to be examined
| PCI | USB
item | mt352 | nxt2002 | stv0299 | mt312 | mt352 | nxt2002 | stv0299 | mt312
-------+-------+---------+---------+-------+-------+---------+---------+-------
1a) | O | | | | N | N | N | N
1b) | O | | | | | | O |
1c) | N | N | | | N | N | O |
1d) | O | O
1e) | O | O
1f) | P
1g) | O
1h) | P |
1i) | O | N
1j) | O | N
1l) | O | N
2) | O | N
5a) | N | O
5b)* | N |
5c) | N | O
* - not done yet
Known bugs and problems and TODO
--------------------------------
1g/h/l) when pid filtering is enabled on the pci card
DMA usage currently:
The DMA is splitted in 2 equal-sized subbuffers. The Flexcop writes to first
address and triggers an IRQ when it's full and starts writing to the second
address. When the second address is full, the IRQ is triggered again, and
the flexcop writes to first address again, and so on.
The buffersize of each address is currently 640*188 bytes.
Problem is, when using hw-pid-filtering and doing some low-bandwidth
operation (like scanning) the buffers won't be filled enough to trigger
the IRQ. That's why:
When PID filtering is activated, the timer IRQ is used. Every 1.97 ms the IRQ
is triggered. Is the current write address of DMA1 different to the one
during the last IRQ, then the data is passed to the demuxer.
There is an additional DMA-IRQ-method: packet count IRQ. This isn't
implemented correctly yet.
The solution is to disable HW PID filtering, but I don't know how the DVB
API software demux behaves on slow systems with 45MBit/s TS.
Solved bugs :)
--------------
1g) pid-filtering (somehow pid index 4 and 5 (EMM_PID and ECM_PID) aren't
working)
SOLUTION: also index 0 was affected, because net_translation is done for
these indexes by default
5b) isochronous transfer does only work in the first attempt (for the Sky2PC
USB, Air2PC is working) SOLUTION: the flexcop was going asleep and never really
woke up again (don't know if this need fixes, see
flexcop-fe-tuner.c:flexcop_sleep)
NEWS: when the driver is loaded and unloaded and loaded again (w/o doing
anything in the while the driver is loaded the first time), no transfers take
place anymore.
Improvements when rewriting (refactoring) is done
=================================================
- split sleeping of the flexcop (misc_204.ACPI3_sig = 1;) from lnb_control
(enable sleeping for other demods than dvb-s)
- add support for CableStar (stv0297 Microtune 203x/ALPS) (almost done, incompatibilities with the Nexus-CA)
Debugging
---------
- add verbose debugging to skystar2.c (dump the reg_dw_data) and compare it
with this flexcop, this is important, because i2c is now using the
flexcop_ibi_value union from flexcop-reg.h (do you have a better idea for
that, please tell us so).
Everything which is identical in the following table, can be put into a common
flexcop-module.
PCI USB
-------------------------------------------------------------------------------
Different:
Register access: accessing IO memory USB control message
I2C bus: I2C bus of the FC USB control message
Data transfer: DMA isochronous transfer
EEPROM transfer: through i2c bus not clear yet
Identical:
Streaming: accessing registers
PID Filtering: accessing registers
Sram destinations: accessing registers
Tuner/Demod: I2C bus
DVB-stuff: can be written for common use
Acknowledgements (just for the rewriting part)
================
Bjarne Steinsbo thought a lot in the first place of the pci part for this code
sharing idea.
Andreas Oberritter for providing a recent PCI initialization template
(pluto2.c).
Boleslaw Ciesielski for pointing out a problem with firmware loader.
Vadim Catana for correcting the USB transfer.
comments, critics and ideas to linux-dvb@linuxtv.org.

69
Documentation/dvb/bt8xx.txt
View file

@ -17,74 +17,53 @@ Because of this, you need to enable
"Device drivers" => "Multimedia devices"
=> "Video For Linux" => "BT848 Video For Linux"
Furthermore you need to enable
"Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices"
=> "DVB for Linux" "DVB Core Support" "Nebula/Pinnacle PCTV/TwinHan PCI Cards"
2) Loading Modules
==================
In general you need to load the bttv driver, which will handle the gpio and
i2c communication for us. Next you need the common dvb-bt8xx device driver
and one frontend driver.
The bttv driver will HANG YOUR SYSTEM IF YOU DO NOT SPECIFY THE CORRECT
CARD ID!
(If you don't get your card running and you suspect that the card id you're
using is wrong, have a look at "bttv-cards.c" for a list of possible card
ids.)
Pay attention to failures when you load the frontend drivers
(e.g. dmesg, /var/log/messages).
i2c communication for us, plus the common dvb-bt8xx device driver.
The frontends for Nebula (nxt6000), Pinnacle PCTV (cx24110) and
TwinHan (dst) are loaded automatically by the dvb-bt8xx device driver.
3a) Nebula / Pinnacle PCTV
--------------------------
$ modprobe bttv i2c_hw=1 card=0x68
$ modprobe dvb-bt8xx
For Nebula cards use the "nxt6000" frontend driver:
$ modprobe nxt6000
$ modprobe bttv (normally bttv is being loaded automatically by kmod)
$ modprobe dvb-bt8xx (or just place dvb-bt8xx in /etc/modules for automatic loading)
For Pinnacle PCTV cards use the "cx24110" frontend driver:
$ modprobe cx24110
3b) TwinHan
-----------
3b) TwinHan and Clones
--------------------------
$ modprobe bttv i2c_hw=1 card=0x71
$ modprobe dvb-bt8xx
$ modprobe dst
The value 0x71 will override the PCI type detection for dvb-bt8xx, which
is necessary for TwinHan cards.#
The value 0x71 will override the PCI type detection for dvb-bt8xx,
which is necessary for TwinHan cards.
If you're having an older card (blue color circuit) and card=0x71 locks your
machine, try using 0x68, too. If that does not work, ask on the DVB mailing list.
If you're having an older card (blue color circuit) and card=0x71 locks
your machine, try using 0x68, too. If that does not work, ask on the
mailing list.
The DST module takes a couple of useful parameters, in case the
dst drivers fails to detect your type of card correctly.
The DST module takes a couple of useful parameters.
dst_type takes values 0 (satellite), 1 (terrestial TV), 2 (cable).
verbose takes values 0 to 5. These values control the verbosity level.
dst_type_flags takes bit combined values:
1 = new tuner type packets. You can use this if your card is detected
and you have debug and you continually see the tuner packets not
working (make sure not a basic problem like dish alignment etc.)
debug takes values 0 and 1. You can either disable or enable debugging.
2 = TS 204. If your card tunes OK, but the picture is terrible, seemingly
breaking up in one half continually, and crc fails a lot, then
this is worth a try (or trying to turn off)
dst_addons takes values 0 and 0x20. A value of 0 means it is a FTA card.
0x20 means it has a Conditional Access slot.
4 = has symdiv. Some cards, mostly without new tuner packets, require
a symbol division algorithm. Doesn't apply to terrestial TV.
You can also specify a value to have the autodetected values turned off
(e.g. 0). The autodected values are determined bythe cards 'response
The autodected values are determined bythe cards 'response
string' which you can see in your logs e.g.
dst_check_ci: recognize DST-MOT
dst_get_device_id: Recognise [DSTMCI]
or
dst_check_ci: unable to recognize DSTXCI or STXCI
--
Authors: Richard Walker, Jamie Honan, Michael Hunold
Authors: Richard Walker, Jamie Honan, Michael Hunold, Manu Abraham

219
Documentation/dvb/ci.txt Normal file
View file

@ -0,0 +1,219 @@
* For the user
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NOTE: This document describes the usage of the high level CI API as
in accordance to the Linux DVB API. This is a not a documentation for the,
existing low level CI API.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To utilize the High Level CI capabilities,
(1*) This point is valid only for the Twinhan/clones
For the Twinhan/Twinhan clones, the dst_ca module handles the CI
hardware handling.This module is loaded automatically if a CI
(Common Interface, that holds the CAM (Conditional Access Module)
is detected.
(2) one requires a userspace application, ca_zap. This small userland
application is in charge of sending the descrambling related information
to the CAM.
This application requires the following to function properly as of now.
(a) Tune to a valid channel, with szap.
eg: $ szap -c channels.conf -r "TMC" -x
(b) a channels.conf containing a valid PMT PID
eg: TMC:11996:h:0:27500:278:512:650:321
here 278 is a valid PMT PID. the rest of the values are the
same ones that szap uses.
(c) after running a szap, you have to run ca_zap, for the
descrambler to function,
eg: $ ca_zap patched_channels.conf "TMC"
The patched means a patch to apply to scan, such that scan can
generate a channels.conf_with pmt, which has this PMT PID info
(NOTE: szap cannot use this channels.conf with the PMT_PID)
(d) Hopeflly Enjoy your favourite subscribed channel as you do with
a FTA card.
(3) Currently ca_zap, and dst_test, both are meant for demonstration
purposes only, they can become full fledged applications if necessary.
* Cards that fall in this category
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
At present the cards that fall in this category are the Twinhan and it's
clones, these cards are available as VVMER, Tomato, Hercules, Orange and
so on.
* CI modules that are supported
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The CI module support is largely dependant upon the firmware on the cards
Some cards do support almost all of the available CI modules. There is
nothing much that can be done in order to make additional CI modules
working with these cards.
Modules that have been tested by this driver at present are
(1) Irdeto 1 and 2 from SCM
(2) Viaccess from SCM
(3) Dragoncam
* The High level CI API
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* For the programmer
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
With the High Level CI approach any new card with almost any random
architecture can be implemented with this style, the definitions
insidethe switch statement can be easily adapted for any card, thereby
eliminating the need for any additional ioctls.
The disadvantage is that the driver/hardware has to manage the rest. For
the application programmer it would be as simple as sending/receiving an
array to/from the CI ioctls as defined in the Linux DVB API. No changes
have been made in the API to accomodate this feature.
* Why the need for another CI interface ?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is one of the most commonly asked question. Well a nice question.
Strictly speaking this is not a new interface.
The CI interface is defined in the DVB API in ca.h as
typedef struct ca_slot_info {
int num; /* slot number */
int type; /* CA interface this slot supports */
#define CA_CI 1 /* CI high level interface */
#define CA_CI_LINK 2 /* CI link layer level interface */
#define CA_CI_PHYS 4 /* CI physical layer level interface */
#define CA_DESCR 8 /* built-in descrambler */
#define CA_SC 128 /* simple smart card interface */
unsigned int flags;
#define CA_CI_MODULE_PRESENT 1 /* module (or card) inserted */
#define CA_CI_MODULE_READY 2
} ca_slot_info_t;
This CI interface follows the CI high level interface, which is not
implemented by most applications. Hence this area is revisited.
This CI interface is quite different in the case that it tries to
accomodate all other CI based devices, that fall into the other categories
This means that this CI interface handles the EN50221 style tags in the
Application layer only and no session management is taken care of by the
application. The driver/hardware will take care of all that.
This interface is purely an EN50221 interface exchanging APDU's. This
means that no session management, link layer or a transport layer do
exist in this case in the application to driver communication. It is
as simple as that. The driver/hardware has to take care of that.
With this High Level CI interface, the interface can be defined with the
regular ioctls.
All these ioctls are also valid for the High level CI interface
#define CA_RESET _IO('o', 128)
#define CA_GET_CAP _IOR('o', 129, ca_caps_t)
#define CA_GET_SLOT_INFO _IOR('o', 130, ca_slot_info_t)
#define CA_GET_DESCR_INFO _IOR('o', 131, ca_descr_info_t)
#define CA_GET_MSG _IOR('o', 132, ca_msg_t)
#define CA_SEND_MSG _IOW('o', 133, ca_msg_t)
#define CA_SET_DESCR _IOW('o', 134, ca_descr_t)
#define CA_SET_PID _IOW('o', 135, ca_pid_t)
On querying the device, the device yields information thus
CA_GET_SLOT_INFO
----------------------------
Command = [info]
APP: Number=[1]
APP: Type=[1]
APP: flags=[1]
APP: CI High level interface
APP: CA/CI Module Present
CA_GET_CAP
----------------------------
Command = [caps]
APP: Slots=[1]
APP: Type=[1]
APP: Descrambler keys=[16]
APP: Type=[1]
CA_SEND_MSG
----------------------------
Descriptors(Program Level)=[ 09 06 06 04 05 50 ff f1]
Found CA descriptor @ program level
(20) ES type=[2] ES pid=[201] ES length =[0 (0x0)]
(25) ES type=[4] ES pid=[301] ES length =[0 (0x0)]
ca_message length is 25 (0x19) bytes
EN50221 CA MSG=[ 9f 80 32 19 03 01 2d d1 f0 08 01 09 06 06 04 05 50 ff f1 02 e0 c9 00 00 04 e1 2d 00 00]
Not all ioctl's are implemented in the driver from the API, the other
features of the hardware that cannot be implemented by the API are achieved
using the CA_GET_MSG and CA_SEND_MSG ioctls. An EN50221 style wrapper is
used to exchange the data to maintain compatibility with other hardware.
/* a message to/from a CI-CAM */
typedef struct ca_msg {
unsigned int index;
unsigned int type;
unsigned int length;
unsigned char msg[256];
} ca_msg_t;
The flow of data can be described thus,
App (User)
-----
parse
|
|
v
en50221 APDU (package)
--------------------------------------
| | | High Level CI driver
| | |
| v |
| en50221 APDU (unpackage) |
| | |
| | |
| v |
| sanity checks |
| | |
| | |
| v |
| do (H/W dep) |
--------------------------------------
| Hardware
|
v
The High Level CI interface uses the EN50221 DVB standard, following a
standard ensures futureproofness.

4
Documentation/dvb/get_dvb_firmware
View file

@ -107,7 +107,7 @@ sub tda10045 {
sub tda10046 {
my $sourcefile = "tt_budget_217g.zip";
my $url = "http://www.technotrend.de/new/217g/$sourcefile";
my $hash = "a25b579e37109af60f4a36c37893957c";
my $hash = "6a7e1e2f2644b162ff0502367553c72d";
my $outfile = "dvb-fe-tda10046.fw";
my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
@ -115,7 +115,7 @@ sub tda10046 {
wgetfile($sourcefile, $url);
unzip($sourcefile, $tmpdir);
extract("$tmpdir/software/OEM/PCI/App/ttlcdacc.dll", 0x3f731, 24479, "$tmpdir/fwtmp");
extract("$tmpdir/software/OEM/PCI/App/ttlcdacc.dll", 0x3f731, 24478, "$tmpdir/fwtmp");
verify("$tmpdir/fwtmp", $hash);
copy("$tmpdir/fwtmp", $outfile);

20
Documentation/feature-removal-schedule.txt
View file

@ -63,3 +63,23 @@ Why: Outside of Linux, the only implementations of anything even
people, who might be using implementations that I am not aware
of, to adjust to this upcoming change.
Who: Paul E. McKenney <paulmck@us.ibm.com>
---------------------------
What: IEEE1394 Audio and Music Data Transmission Protocol driver,
Connection Management Procedures driver
When: November 2005
Files: drivers/ieee1394/{amdtp,cmp}*
Why: These are incomplete, have never worked, and are better implemented
in userland via raw1394 (see http://freebob.sourceforge.net/ for
example.)
Who: Jody McIntyre <scjody@steamballoon.com>
---------------------------
What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
When: November 2005
Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
more efficient. You should really be using libraw1394 for raw1394
access anyway.
Who: Jody McIntyre <scjody@steamballoon.com>

6
Documentation/filesystems/sysfs-pci.txt
View file

@ -7,7 +7,6 @@ that support it. For example, a given bus might look like this:
|-- 0000:17:00.0
| |-- class
| |-- config
| |-- detach_state
| |-- device
| |-- irq
| |-- local_cpus
@ -19,7 +18,7 @@ that support it. For example, a given bus might look like this:
| |-- subsystem_device
| |-- subsystem_vendor
| `-- vendor
`-- detach_state
`-- ...
The topmost element describes the PCI domain and bus number. In this case,
the domain number is 0000 and the bus number is 17 (both values are in hex).
@ -31,7 +30,6 @@ files, each with their own function.
---- --------
class PCI class (ascii, ro)
config PCI config space (binary, rw)
detach_state connection status (bool, rw)
device PCI device (ascii, ro)
irq IRQ number (ascii, ro)
local_cpus nearby CPU mask (cpumask, ro)
@ -85,4 +83,4 @@ useful return codes should be provided.
Legacy resources are protected by the HAVE_PCI_LEGACY define. Platforms
wishing to support legacy functionality should define it and provide
pci_legacy_read, pci_legacy_write and pci_mmap_legacy_page_range functions.
pci_legacy_read, pci_legacy_write and pci_mmap_legacy_page_range functions.

7
Documentation/networking/DLINK.txt
View file

@ -178,10 +178,9 @@ Released 1994-06-13
7. ACKNOWLEDGMENTS.
These drivers wouldn't have been done without the base
(and support) from Ross Biro <bir7@leland.stanford.edu>,
and D-Link Systems Inc. The driver relies upon GPL-ed
source from D-Link Systems Inc. and from Russel Nelson at
Crynwr Software <nelson@crynwr.com>.
(and support) from Ross Biro, and D-Link Systems Inc.
The driver relies upon GPL-ed source from D-Link Systems Inc.
and from Russel Nelson at Crynwr Software <nelson@crynwr.com>.
Additional input also from:
Donald Becker <becker@super.org>, Alan Cox <A.Cox@swansea.ac.uk>

2
Documentation/networking/vortex.txt
View file

@ -12,7 +12,7 @@ Don is no longer the prime maintainer of this version of the driver.
Please report problems to one or more of:
Andrew Morton <andrewm@uow.edu.au>
Netdev mailing list <netdev@oss.sgi.com>
Netdev mailing list <netdev@vger.kernel.org>
Linux kernel mailing list <linux-kernel@vger.kernel.org>
Please note the 'Reporting and Diagnosing Problems' section at the end

1
Documentation/pci.txt
View file

@ -279,6 +279,7 @@ pci_for_each_dev_reverse() Superseded by pci_find_device_reverse()
pci_for_each_bus() Superseded by pci_find_next_bus()
pci_find_device() Superseded by pci_get_device()
pci_find_subsys() Superseded by pci_get_subsys()
pci_find_slot() Superseded by pci_get_slot()
pcibios_find_class() Superseded by pci_get_class()
pci_find_class() Superseded by pci_get_class()
pci_(read|write)_*_nodev() Superseded by pci_bus_(read|write)_*()

21
Documentation/power/devices.txt
View file

@ -207,27 +207,6 @@ SYSTEM_SHUTDOWN, I do not understand this one too much. probably event
#READY_AFTER_RESUME
#
Driver Detach Power Management
The kernel now supports the ability to place a device in a low-power
state when it is detached from its driver, which happens when its
module is removed.
Each device contains a 'detach_state' file in its sysfs directory
which can be used to control this state. Reading from this file
displays what the current detach state is set to. This is 0 (On) by
default. A user may write a positive integer value to this file in the
range of 1-4 inclusive.
A value of 1-3 will indicate the device should be placed in that
low-power state, which will cause ->suspend() to be called for that
device. A value of 4 indicates that the device should be shutdown, so
->shutdown() will be called for that device.
The driver is responsible for reinitializing the device when the
module is re-inserted during it's ->probe() (or equivalent) method.
The driver core will not call any extra functions when binding the
device to the driver.
pm_message_t meaning

35
Documentation/power/pci.txt
View file

@ -165,40 +165,9 @@ Description:
These functions are intended for use by individual drivers, and are defined in
struct pci_driver:
int (*save_state) (struct pci_dev *dev, u32 state);
int (*suspend) (struct pci_dev *dev, u32 state);
int (*suspend) (struct pci_dev *dev, pm_message_t state);
int (*resume) (struct pci_dev *dev);
int (*enable_wake) (struct pci_dev *dev, u32 state, int enable);
save_state
----------
Usage:
if (dev->driver && dev->driver->save_state)
dev->driver->save_state(dev,state);
The driver should use this callback to save device state. It should take into
account the current state of the device and the requested state in order to
avoid any unnecessary operations.
For example, a video card that supports all 4 states (D0-D3), all controller
context is preserved when entering D1, but the screen is placed into a low power
state (blanked).
The driver can also interpret this function as a notification that it may be
entering a sleep state in the near future. If it knows that the device cannot
enter the requested state, either because of lack of support for it, or because
the device is middle of some critical operation, then it should fail.
This function should not be used to set any state in the device or the driver
because the device may not actually enter the sleep state (e.g. another driver
later causes causes a global state transition to fail).
Note that in intermediate low power states, a device's I/O and memory spaces may
be disabled and may not be available in subsequent transitions to lower power
states.
int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable);
suspend

4
Documentation/powerpc/hvcs.txt
View file

@ -347,8 +347,8 @@ address that is created by firmware. An example vty-server sysfs entry
looks like the following:
Pow5:/sys/bus/vio/drivers/hvcs/30000004 # ls
. current_vty devspec name partner_vtys
.. detach_state index partner_clcs vterm_state
. current_vty devspec name partner_vtys
.. index partner_clcs vterm_state
Each entry is provided, by default with a "name" attribute. Reading the
"name" attribute will reveal the device type as shown in the following

3
Documentation/x86_64/boot-options.txt
View file

@ -25,6 +25,9 @@ APICs
noapictimer Don't set up the APIC timer
no_timer_check Don't check the IO-APIC timer. This can work around
problems with incorrect timer initialization on some boards.
Early Console
syntax: earlyprintk=vga

62
MAINTAINERS
View file

@ -73,7 +73,7 @@ S: Status, one of the following:
3C359 NETWORK DRIVER
P: Mike Phillips
M: mikep@linuxtr.net
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
L: linux-tr@linuxtr.net
W: http://www.linuxtr.net
S: Maintained
@ -81,13 +81,13 @@ S: Maintained
3C505 NETWORK DRIVER
P: Philip Blundell
M: philb@gnu.org
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
3CR990 NETWORK DRIVER
P: David Dillow
M: dave@thedillows.org
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
3W-XXXX ATA-RAID CONTROLLER DRIVER
@ -130,7 +130,7 @@ S: Maintained
8169 10/100/1000 GIGABIT ETHERNET DRIVER
P: Francois Romieu
M: romieu@fr.zoreil.com
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
8250/16?50 (AND CLONE UARTS) SERIAL DRIVER
@ -143,7 +143,7 @@ S: Maintained
8390 NETWORK DRIVERS [WD80x3/SMC-ELITE, SMC-ULTRA, NE2000, 3C503, etc.]
P: Paul Gortmaker
M: p_gortmaker@yahoo.com
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
A2232 SERIAL BOARD DRIVER
@ -239,6 +239,12 @@ L: linux-usb-devel@lists.sourceforge.net
W: http://www.linux-usb.org/SpeedTouch/
S: Maintained
ALI1563 I2C DRIVER
P: Rudolf Marek
M: r.marek@sh.cvut.cz
L: sensors@stimpy.netroedge.com
S: Maintained
ALPHA PORT
P: Richard Henderson
M: rth@twiddle.net
@ -326,7 +332,7 @@ S: Maintained
ARPD SUPPORT
P: Jonathan Layes
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
ASUS ACPI EXTRAS DRIVER
@ -700,7 +706,7 @@ S: Orphaned
DIGI RIGHTSWITCH NETWORK DRIVER
P: Rick Richardson
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
W: http://www.digi.com
S: Orphaned
@ -806,7 +812,7 @@ S: Maintained
ETHEREXPRESS-16 NETWORK DRIVER
P: Philip Blundell
M: philb@gnu.org
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
ETHERNET BRIDGE
@ -869,7 +875,7 @@ S: Maintained
FRAME RELAY DLCI/FRAD (Sangoma drivers too)
P: Mike McLagan
M: mike.mclagan@linux.org
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
FREEVXFS FILESYSTEM
@ -1023,8 +1029,8 @@ W: http://www.ia64-linux.org/
S: Maintained
SN-IA64 (Itanium) SUB-PLATFORM
P: Jesse Barnes
M: jbarnes@sgi.com
P: Greg Edwards
M: edwardsg@sgi.com
L: linux-altix@sgi.com
L: linux-ia64@vger.kernel.org
W: http://www.sgi.com/altix
@ -1209,7 +1215,7 @@ S: Maintained
IPX NETWORK LAYER
P: Arnaldo Carvalho de Melo
M: acme@conectiva.com.br
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
IRDA SUBSYSTEM
@ -1476,7 +1482,7 @@ MARVELL MV64340 ETHERNET DRIVER
P: Manish Lachwani
M: Manish_Lachwani@pmc-sierra.com
L: linux-mips@linux-mips.org
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Supported
MATROX FRAMEBUFFER DRIVER
@ -1586,13 +1592,13 @@ P: Andrew Morton
M: akpm@osdl.org
P: Jeff Garzik
M: jgarzik@pobox.com
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
NETWORKING [GENERAL]
P: Networking Team
M: netdev@oss.sgi.com
L: netdev@oss.sgi.com
M: netdev@vger.kernel.org
L: netdev@vger.kernel.org
S: Maintained
NETWORKING [IPv4/IPv6]
@ -1608,7 +1614,7 @@ P: Hideaki YOSHIFUJI
M: yoshfuji@linux-ipv6.org
P: Patrick McHardy
M: kaber@coreworks.de
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
IPVS
@ -1628,7 +1634,7 @@ NI5010 NETWORK DRIVER
P: Jan-Pascal van Best and Andreas Mohr
M: Jan-Pascal van Best <jvbest@qv3pluto.leidenuniv.nl>
M: Andreas Mohr <100.30936@germany.net>
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
NINJA SCSI-3 / NINJA SCSI-32Bi (16bit/CardBus) PCMCIA SCSI HOST ADAPTER DRIVER
@ -1670,7 +1676,7 @@ P: Peter De Shrijver
M: p2@ace.ulyssis.student.kuleuven.ac.be
P: Mike Phillips
M: mikep@linuxtr.net
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
L: linux-tr@linuxtr.net
W: http://www.linuxtr.net
S: Maintained
@ -1699,7 +1705,9 @@ P: Pavel Roskin
M: proski@gnu.org
P: David Gibson
M: hermes@gibson.dropbear.id.au
W: http://www.ozlabs.org/people/dgibson/dldwd
L: orinoco-users@lists.sourceforge.net
L: orinoco-devel@lists.sourceforge.net
W: http://www.nongnu.org/orinoco/
S: Maintained
PARALLEL PORT SUPPORT
@ -1775,7 +1783,7 @@ S: Unmaintained
PCNET32 NETWORK DRIVER
P: Thomas Bogendörfer
M: tsbogend@alpha.franken.de
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
PHRAM MTD DRIVER
@ -1787,7 +1795,7 @@ S: Maintained
POSIX CLOCKS and TIMERS
P: George Anzinger
M: george@mvista.com
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Supported
PNP SUPPORT
@ -1822,7 +1830,7 @@ S: Supported
PRISM54 WIRELESS DRIVER
P: Prism54 Development Team
M: prism54-private@prism54.org
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
W: http://prism54.org
S: Maintained
@ -2039,7 +2047,7 @@ SIS 900/7016 FAST ETHERNET DRIVER
P: Daniele Venzano
M: venza@brownhat.org
W: http://www.brownhat.org/sis900.html
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
SIS FRAMEBUFFER DRIVER
@ -2098,7 +2106,7 @@ S: Maintained
SONIC NETWORK DRIVER
P: Thomas Bogendoerfer
M: tsbogend@alpha.franken.de
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Maintained
SONY VAIO CONTROL DEVICE DRIVER
@ -2155,7 +2163,7 @@ S: Supported
SPX NETWORK LAYER
P: Jay Schulist
M: jschlst@samba.org
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
S: Supported
SRM (Alpha) environment access
@ -2234,7 +2242,7 @@ S: Maintained
TOKEN-RING NETWORK DRIVER
P: Mike Phillips
M: mikep@linuxtr.net
L: netdev@oss.sgi.com
L: netdev@vger.kernel.org
L: linux-tr@linuxtr.net
W: http://www.linuxtr.net
S: Maintained

4
Makefile
View file

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 12
EXTRAVERSION =-rc3
EXTRAVERSION =-rc6
NAME=Woozy Numbat
# *DOCUMENTATION*
@ -530,7 +530,7 @@ endif
include $(srctree)/arch/$(ARCH)/Makefile
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS := -nostdinc -isystem $(shell $(CC) -print-file-name=include)
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
CHECKFLAGS += $(NOSTDINC_FLAGS)
# warn about C99 declaration after statement

4
arch/alpha/Kconfig
View file

@ -280,6 +280,10 @@ config ISA
(MCA) or VESA. ISA is an older system, now being displaced by PCI;
newer boards don't support it. If you have ISA, say Y, otherwise N.
config ISA_DMA_API
bool
default y
config PCI
bool
depends on !ALPHA_JENSEN

7
arch/alpha/kernel/osf_sys.c
View file

@ -1150,16 +1150,13 @@ osf_usleep_thread(struct timeval32 __user *sleep, struct timeval32 __user *remai
if (get_tv32(&tmp, sleep))
goto fault;
ticks = tmp.tv_usec;
ticks = (ticks + (1000000 / HZ) - 1) / (1000000 / HZ);
ticks += tmp.tv_sec * HZ;
ticks = timeval_to_jiffies(&tmp);
current->state = TASK_INTERRUPTIBLE;
ticks = schedule_timeout(ticks);
if (remain) {
tmp.tv_sec = ticks / HZ;
tmp.tv_usec = ticks % HZ;
jiffies_to_timeval(ticks, &tmp);
if (put_tv32(remain, &tmp))
goto fault;
}

28
arch/arm/Kconfig
View file

@ -85,6 +85,7 @@ choice
config ARCH_CLPS7500
bool "Cirrus-CL-PS7500FE"
select TIMER_ACORN
select ISA
config ARCH_CLPS711X
bool "CLPS711x/EP721x-based"
@ -96,6 +97,7 @@ config ARCH_CO285
config ARCH_EBSA110
bool "EBSA-110"
select ISA
help
This is an evaluation board for the StrongARM processor available
from Digital. It has limited hardware on-board, including an onboard
@ -120,13 +122,16 @@ config ARCH_INTEGRATOR
config ARCH_IOP3XX
bool "IOP3xx-based"
select PCI
config ARCH_IXP4XX
bool "IXP4xx-based"
select DMABOUNCE
select PCI
config ARCH_IXP2000
bool "IXP2400/2800-based"
select PCI
config ARCH_L7200
bool "LinkUp-L7200"
@ -155,6 +160,8 @@ config ARCH_RPC
config ARCH_SA1100
bool "SA1100-based"
select ISA
select DISCONTIGMEM
config ARCH_S3C2410
bool "Samsung S3C2410"
@ -165,6 +172,9 @@ config ARCH_S3C2410
config ARCH_SHARK
bool "Shark"
select ISA
select ISA_DMA
select PCI
config ARCH_LH7A40X
bool "Sharp LH7A40X"
@ -252,8 +262,6 @@ config ARM_AMBA
config ISA
bool
depends on FOOTBRIDGE_HOST || ARCH_SHARK || ARCH_CLPS7500 || ARCH_EBSA110 || ARCH_CDB89712 || ARCH_EDB7211 || ARCH_SA1100 || ARCH_MX1ADS
default y
help
Find out whether you have ISA slots on your motherboard. ISA is the
name of a bus system, i.e. the way the CPU talks to the other stuff
@ -263,12 +271,13 @@ config ISA
config ISA_DMA
bool
depends on FOOTBRIDGE_HOST || ARCH_SHARK
config ISA_DMA_API
bool
default y
config PCI
bool "PCI support" if ARCH_INTEGRATOR_AP
default y if ARCH_SHARK || FOOTBRIDGE_HOST || ARCH_IOP3XX || ARCH_IXP4XX || ARCH_IXP2000
help
Find out whether you have a PCI motherboard. PCI is the name of a
bus system, i.e. the way the CPU talks to the other stuff inside
@ -296,7 +305,7 @@ menu "Kernel Features"
config SMP
bool "Symmetric Multi-Processing (EXPERIMENTAL)"
depends on EXPERIMENTAL && n
depends on EXPERIMENTAL #&& n
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If
@ -336,8 +345,7 @@ config PREEMPT
config DISCONTIGMEM
bool
depends on ARCH_EDB7211 || ARCH_SA1100 || (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
default y
default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
help
Say Y to support efficient handling of discontiguous physical memory,
for architectures which are either NUMA (Non-Uniform Memory Access)
@ -489,7 +497,7 @@ source "drivers/cpufreq/Kconfig"
config CPU_FREQ_SA1100
bool
depends on CPU_FREQ && (SA1100_LART || SA1100_PLEB)
depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
default y
config CPU_FREQ_SA1110
@ -681,7 +689,9 @@ source "drivers/block/Kconfig"
source "drivers/acorn/block/Kconfig"
if ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
source "drivers/ide/Kconfig"
endif

7
arch/arm/boot/compressed/head-xscale.S
View file

@ -47,3 +47,10 @@ __XScale_start:
orr r7, r7, #(MACH_TYPE_GTWX5715 & 0xff00)
#endif
#ifdef CONFIG_ARCH_IXP2000
mov r1, #-1
mov r0, #0xd6000000
str r1, [r0, #0x14]
str r1, [r0, #0x18]
#endif

29
arch/arm/configs/badge4_defconfig
View file

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.12-rc1-bk2
# Sat Mar 26 21:32:26 2005
# Linux kernel version: 2.6.12-rc6-git3
# Thu Jun 9 19:00:50 2005
#
CONFIG_ARM=y
CONFIG_MMU=y
@ -16,6 +16,7 @@ CONFIG_GENERIC_IOMAP=y
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
#
# General setup
@ -34,6 +35,8 @@ CONFIG_EMBEDDED=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
@ -109,7 +112,6 @@ CONFIG_CPU_ABRT_EV4=y
CONFIG_CPU_CACHE_V4WB=y
CONFIG_CPU_CACHE_VIVT=y
CONFIG_CPU_TLB_V4WB=y
CONFIG_CPU_MINICACHE=y
#
# Processor Features
@ -122,6 +124,7 @@ CONFIG_FORCE_MAX_ZONEORDER=9
# Bus support
#
CONFIG_ISA=y
CONFIG_ISA_DMA_API=y
#
# PCCARD (PCMCIA/CardBus) support
@ -131,6 +134,7 @@ CONFIG_ISA=y
#
# Kernel Features
#
# CONFIG_SMP is not set
# CONFIG_PREEMPT is not set
CONFIG_DISCONTIGMEM=y
# CONFIG_LEDS is not set
@ -152,12 +156,14 @@ CONFIG_CPU_FREQ_TABLE=y
# CONFIG_CPU_FREQ_DEBUG is not set
CONFIG_CPU_FREQ_STAT=y
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_SA1100=y
#
# Floating point emulation
@ -294,7 +300,6 @@ CONFIG_PARPORT_NOT_PC=y
#
# Block devices
#
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_PARIDE is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
@ -428,7 +433,6 @@ CONFIG_NET=y
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
# CONFIG_NETLINK_DEV is not set
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
@ -526,6 +530,7 @@ CONFIG_IRDA_ULTRA=y
# CONFIG_SMC_IRCC_FIR is not set
# CONFIG_ALI_FIR is not set
CONFIG_SA1100_FIR=y
# CONFIG_VIA_FIR is not set
CONFIG_BT=m
CONFIG_BT_L2CAP=m
# CONFIG_BT_SCO is not set
@ -618,7 +623,6 @@ CONFIG_NET_WIRELESS=y
#
# CONFIG_SERIO is not set
# CONFIG_GAMEPORT is not set
CONFIG_SOUND_GAMEPORT=y
#
# Character devices
@ -687,7 +691,6 @@ CONFIG_RTC=m
#
# TPM devices
#
# CONFIG_TCG_TPM is not set
#
# I2C support
@ -736,6 +739,7 @@ CONFIG_I2C_ELEKTOR=m
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
@ -747,6 +751,7 @@ CONFIG_I2C_ELEKTOR=m
#
# Other I2C Chip support
#
# CONFIG_SENSORS_DS1337 is not set
# CONFIG_SENSORS_EEPROM is not set
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_SENSORS_PCF8591 is not set
@ -871,7 +876,6 @@ CONFIG_USB_PRINTER=m
#
CONFIG_USB_STORAGE=y
CONFIG_USB_STORAGE_DEBUG=y
# CONFIG_USB_STORAGE_RW_DETECT is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
@ -954,9 +958,11 @@ CONFIG_USB_USS720=m
#
CONFIG_USB_SERIAL=m
CONFIG_USB_SERIAL_GENERIC=y
# CONFIG_USB_SERIAL_AIRPRIME is not set
CONFIG_USB_SERIAL_BELKIN=m
CONFIG_USB_SERIAL_WHITEHEAT=m
CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
# CONFIG_USB_SERIAL_CP2101 is not set
# CONFIG_USB_SERIAL_CYPRESS_M8 is not set
CONFIG_USB_SERIAL_EMPEG=m
CONFIG_USB_SERIAL_FTDI_SIO=m
@ -985,6 +991,7 @@ CONFIG_USB_SERIAL_KEYSPAN=m
# CONFIG_USB_SERIAL_KOBIL_SCT is not set
CONFIG_USB_SERIAL_MCT_U232=m
CONFIG_USB_SERIAL_PL2303=m
# CONFIG_USB_SERIAL_HP4X is not set
# CONFIG_USB_SERIAL_SAFE is not set
# CONFIG_USB_SERIAL_TI is not set
CONFIG_USB_SERIAL_CYBERJACK=m

24
arch/arm/configs/h3600_defconfig
View file

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.12-rc1-bk2
# Mon Mar 28 00:02:26 2005
# Linux kernel version: 2.6.12-rc4
# Thu Jun 9 01:59:03 2005
#
CONFIG_ARM=y
CONFIG_MMU=y
@ -16,6 +16,7 @@ CONFIG_GENERIC_IOMAP=y
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
#
# General setup
@ -33,6 +34,8 @@ CONFIG_KOBJECT_UEVENT=y
# CONFIG_EMBEDDED is not set
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
@ -120,6 +123,7 @@ CONFIG_CPU_MINICACHE=y
# Bus support
#
CONFIG_ISA=y
CONFIG_ISA_DMA_API=y
#
# PCCARD (PCMCIA/CardBus) support
@ -138,6 +142,7 @@ CONFIG_PCMCIA_SA1100=y
#
# Kernel Features
#
# CONFIG_SMP is not set
# CONFIG_PREEMPT is not set
CONFIG_DISCONTIGMEM=y
# CONFIG_LEDS is not set
@ -159,12 +164,13 @@ CONFIG_CPU_FREQ_TABLE=y
# CONFIG_CPU_FREQ_DEBUG is not set
CONFIG_CPU_FREQ_STAT=y
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
CONFIG_CPU_FREQ_SA1100=y
#
# Floating point emulation
@ -298,7 +304,6 @@ CONFIG_MTD_SA1100=y
#
# Block devices
#
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=m
@ -379,7 +384,6 @@ CONFIG_NET=y
# Networking options
#
# CONFIG_PACKET is not set
# CONFIG_NETLINK_DEV is not set
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
@ -476,6 +480,7 @@ CONFIG_IRCOMM=m
# CONFIG_SMC_IRCC_FIR is not set
# CONFIG_ALI_FIR is not set
CONFIG_SA1100_FIR=m
# CONFIG_VIA_FIR is not set
# CONFIG_BT is not set
CONFIG_NETDEVICES=y
# CONFIG_DUMMY is not set
@ -647,7 +652,6 @@ CONFIG_LEGACY_PTY_COUNT=256
#
# TPM devices
#
# CONFIG_TCG_TPM is not set
#
# I2C support
@ -676,9 +680,11 @@ CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_SOFT_CURSOR=y
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set
CONFIG_FB_SA1100=y
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_VIRTUAL is not set
#

22
arch/arm/configs/hackkit_defconfig
View file

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.12-rc1-bk2
# Mon Mar 28 00:22:34 2005
# Linux kernel version: 2.6.12-rc6-git3
# Thu Jun 9 20:58:58 2005
#
CONFIG_ARM=y
CONFIG_MMU=y
@ -16,6 +16,7 @@ CONFIG_GENERIC_IOMAP=y
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
#
# General setup
@ -34,6 +35,8 @@ CONFIG_KOBJECT_UEVENT=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
@ -109,7 +112,6 @@ CONFIG_CPU_ABRT_EV4=y
CONFIG_CPU_CACHE_V4WB=y
CONFIG_CPU_CACHE_VIVT=y
CONFIG_CPU_TLB_V4WB=y
CONFIG_CPU_MINICACHE=y
#
# Processor Features
@ -119,6 +121,7 @@ CONFIG_CPU_MINICACHE=y
# Bus support
#
CONFIG_ISA=y
CONFIG_ISA_DMA_API=y
#
# PCCARD (PCMCIA/CardBus) support
@ -128,6 +131,7 @@ CONFIG_ISA=y
#
# Kernel Features
#
# CONFIG_SMP is not set
# CONFIG_PREEMPT is not set
CONFIG_DISCONTIGMEM=y
CONFIG_LEDS=y
@ -151,12 +155,14 @@ CONFIG_CPU_FREQ_TABLE=y
# CONFIG_CPU_FREQ_DEBUG is not set
CONFIG_CPU_FREQ_STAT=y
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_SA1100=y
#
# Floating point emulation
@ -280,7 +286,6 @@ CONFIG_MTD_CFI_UTIL=y
#
# Block devices
#
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
# CONFIG_BLK_DEV_LOOP is not set
@ -338,7 +343,6 @@ CONFIG_NET=y
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
# CONFIG_NETLINK_DEV is not set
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
@ -484,7 +488,6 @@ CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_RAW is not set
# CONFIG_GAMEPORT is not set
CONFIG_SOUND_GAMEPORT=y
#
# Character devices
@ -533,7 +536,6 @@ CONFIG_LEGACY_PTY_COUNT=256
#
# TPM devices
#
# CONFIG_TCG_TPM is not set
#
# I2C support

30
arch/arm/kernel/entry-armv.S
View file

@ -17,8 +17,8 @@
#include <asm/glue.h>
#include <asm/vfpmacros.h>
#include <asm/hardware.h> @ should be moved into entry-macro.S
#include <asm/arch/irqs.h> @ should be moved into entry-macro.S
#include <asm/hardware.h> /* should be moved into entry-macro.S */
#include <asm/arch/irqs.h> /* should be moved into entry-macro.S */
#include <asm/arch/entry-macro.S>
#include "entry-header.S"
@ -269,7 +269,7 @@ __pabt_svc:
add r5, sp, #S_PC
ldmia r7, {r2 - r4} @ Get USR pc, cpsr
#if __LINUX_ARM_ARCH__ < 6
#if __LINUX_ARM_ARCH__ < 6 && !defined(CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG)
@ make sure our user space atomic helper is aborted
cmp r2, #VIRT_OFFSET
bichs r3, r3, #PSR_Z_BIT
@ -505,9 +505,9 @@ ENTRY(__switch_to)
mra r4, r5, acc0
stmia ip, {r4, r5}
#endif
#ifdef CONFIG_HAS_TLS_REG
#if defined(CONFIG_HAS_TLS_REG)
mcr p15, 0, r3, c13, c0, 3 @ set TLS register
#else
#elif !defined(CONFIG_TLS_REG_EMUL)
mov r4, #0xffff0fff
str r3, [r4, #-15] @ TLS val at 0xffff0ff0
#endif
@ -616,11 +616,17 @@ __kuser_helper_start:
__kuser_cmpxchg: @ 0xffff0fc0
#if __LINUX_ARM_ARCH__ < 6
#if defined(CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG)
#ifdef CONFIG_SMP /* sanity check */
#error "CONFIG_SMP on a machine supporting pre-ARMv6 processors?"
#endif
/*
* Poor you. No fast solution possible...
* The kernel itself must perform the operation.
* A special ghost syscall is used for that (see traps.c).
*/
swi #0x9ffff0
mov pc, lr
#elif __LINUX_ARM_ARCH__ < 6
/*
* Theory of operation:
@ -690,11 +696,7 @@ __kuser_cmpxchg: @ 0xffff0fc0
__kuser_get_tls: @ 0xffff0fe0
#ifndef CONFIG_HAS_TLS_REG
#ifdef CONFIG_SMP /* sanity check */
#error "CONFIG_SMP without CONFIG_HAS_TLS_REG is wrong"
#endif
#if !defined(CONFIG_HAS_TLS_REG) && !defined(CONFIG_TLS_REG_EMUL)
ldr r0, [pc, #(16 - 8)] @ TLS stored at 0xffff0ff0
mov pc, lr

3
arch/arm/kernel/head.S
View file

@ -19,6 +19,7 @@
#include <asm/procinfo.h>
#include <asm/ptrace.h>
#include <asm/constants.h>
#include <asm/thread_info.h>
#include <asm/system.h>
#define PROCINFO_MMUFLAGS 8
@ -131,7 +132,7 @@ __switch_data:
.long processor_id @ r4
.long __machine_arch_type @ r5
.long cr_alignment @ r6
.long init_thread_union+8192 @ sp
.long init_thread_union + THREAD_START_SP @ sp
/*
* The following fragment of code is executed with the MMU on, and uses

25
arch/arm/kernel/process.c
View file

@ -256,8 +256,6 @@ static unsigned long *thread_info_head;
static unsigned int nr_thread_info;
#define EXTRA_TASK_STRUCT 4
#define ll_alloc_task_struct() ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
#define ll_free_task_struct(p) free_pages((unsigned long)(p),1)
struct thread_info *alloc_thread_info(struct task_struct *task)
{
@ -274,17 +272,16 @@ struct thread_info *alloc_thread_info(struct task_struct *task)
}
if (!thread)
thread = ll_alloc_task_struct();
thread = (struct thread_info *)
__get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER);
#ifdef CONFIG_MAGIC_SYSRQ
#ifdef CONFIG_DEBUG_STACK_USAGE
/*
* The stack must be cleared if you want SYSRQ-T to
* give sensible stack usage information
*/
if (thread) {
char *p = (char *)thread;
memzero(p+KERNEL_STACK_SIZE, KERNEL_STACK_SIZE);
}
if (thread)
memzero(thread, THREAD_SIZE);
#endif
return thread;
}
@ -297,7 +294,7 @@ void free_thread_info(struct thread_info *thread)
thread_info_head = p;
nr_thread_info += 1;
} else
ll_free_task_struct(thread);
free_pages((unsigned long)thread, THREAD_SIZE_ORDER);
}
/*
@ -350,7 +347,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start,
struct thread_info *thread = p->thread_info;
struct pt_regs *childregs;
childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_SIZE - 8)) - 1;
childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_START_SP)) - 1;
*childregs = *regs;
childregs->ARM_r0 = 0;
childregs->ARM_sp = stack_start;
@ -447,15 +444,17 @@ EXPORT_SYMBOL(kernel_thread);
unsigned long get_wchan(struct task_struct *p)
{
unsigned long fp, lr;
unsigned long stack_page;
unsigned long stack_start, stack_end;
int count = 0;
if (!p || p == current || p->state == TASK_RUNNING)
return 0;
stack_page = 4096 + (unsigned long)p->thread_info;
stack_start = (unsigned long)(p->thread_info + 1);
stack_end = ((unsigned long)p->thread_info) + THREAD_SIZE;
fp = thread_saved_fp(p);
do {
if (fp < stack_page || fp > 4092+stack_page)
if (fp < stack_start || fp > stack_end)
return 0;
lr = pc_pointer (((unsigned long *)fp)[-1]);
if (!in_sched_functions(lr))

2
arch/arm/kernel/sys_arm.c
View file

@ -302,7 +302,7 @@ long execve(const char *filename, char **argv, char **envp)
"b ret_to_user"
:
: "r" (current_thread_info()),
"Ir" (THREAD_SIZE - 8 - sizeof(regs)),
"Ir" (THREAD_START_SP - sizeof(regs)),
"r" (&regs),
"Ir" (sizeof(regs))
: "r0", "r1", "r2", "r3", "ip", "memory");

63
arch/arm/kernel/traps.c
View file

@ -218,7 +218,8 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
tsk->comm, tsk->pid, tsk->thread_info + 1);
if (!user_mode(regs) || in_interrupt()) {
dump_mem("Stack: ", regs->ARM_sp, 8192+(unsigned long)tsk->thread_info);
dump_mem("Stack: ", regs->ARM_sp,
THREAD_SIZE + (unsigned long)tsk->thread_info);
dump_backtrace(regs, tsk);
dump_instr(regs);
}
@ -450,9 +451,9 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
case NR(set_tls):
thread->tp_value = regs->ARM_r0;
#ifdef CONFIG_HAS_TLS_REG
#if defined(CONFIG_HAS_TLS_REG)
asm ("mcr p15, 0, %0, c13, c0, 3" : : "r" (regs->ARM_r0) );
#else
#elif !defined(CONFIG_TLS_REG_EMUL)
/*
* User space must never try to access this directly.
* Expect your app to break eventually if you do so.
@ -463,6 +464,55 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
#endif
return 0;
#ifdef CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG
/*
* Atomically store r1 in *r2 if *r2 is equal to r0 for user space.
* Return zero in r0 if *MEM was changed or non-zero if no exchange
* happened. Also set the user C flag accordingly.
* If access permissions have to be fixed up then non-zero is
* returned and the operation has to be re-attempted.
*
* *NOTE*: This is a ghost syscall private to the kernel. Only the
* __kuser_cmpxchg code in entry-armv.S should be aware of its
* existence. Don't ever use this from user code.
*/
case 0xfff0:
{
extern void do_DataAbort(unsigned long addr, unsigned int fsr,
struct pt_regs *regs);
unsigned long val;
unsigned long addr = regs->ARM_r2;
struct mm_struct *mm = current->mm;
pgd_t *pgd; pmd_t *pmd; pte_t *pte;
regs->ARM_cpsr &= ~PSR_C_BIT;
spin_lock(&mm->page_table_lock);
pgd = pgd_offset(mm, addr);
if (!pgd_present(*pgd))
goto bad_access;
pmd = pmd_offset(pgd, addr);
if (!pmd_present(*pmd))
goto bad_access;
pte = pte_offset_map(pmd, addr);
if (!pte_present(*pte) || !pte_write(*pte))
goto bad_access;
val = *(unsigned long *)addr;
val -= regs->ARM_r0;
if (val == 0) {
*(unsigned long *)addr = regs->ARM_r1;
regs->ARM_cpsr |= PSR_C_BIT;
}
spin_unlock(&mm->page_table_lock);
return val;
bad_access:
spin_unlock(&mm->page_table_lock);
/* simulate a read access fault */
do_DataAbort(addr, 15 + (1 << 11), regs);
return -1;
}
#endif
default:
/* Calls 9f00xx..9f07ff are defined to return -ENOSYS
if not implemented, rather than raising SIGILL. This
@ -497,11 +547,14 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
return 0;
}
#if defined(CONFIG_CPU_32v6) && !defined(CONFIG_HAS_TLS_REG)
#ifdef CONFIG_TLS_REG_EMUL
/*
* We might be running on an ARMv6+ processor which should have the TLS
* register, but for some reason we can't use it and have to emulate it.
* register but for some reason we can't use it, or maybe an SMP system
* using a pre-ARMv6 processor (there are apparently a few prototypes like
* that in existence) and therefore access to that register must be
* emulated.
*/
static int get_tp_trap(struct pt_regs *regs, unsigned int instr)

3
arch/arm/kernel/vmlinux.lds.S
View file

@ -5,6 +5,7 @@
#include <asm-generic/vmlinux.lds.h>
#include <linux/config.h>
#include <asm/thread_info.h>
OUTPUT_ARCH(arm)
ENTRY(stext)
@ -103,7 +104,7 @@ SECTIONS
__data_loc = ALIGN(4); /* location in binary */
. = DATAADDR;
#else
. = ALIGN(8192);
. = ALIGN(THREAD_SIZE);
__data_loc = .;
#endif

6
arch/arm/lib/io-writesw-armv4.S
View file

@ -87,9 +87,9 @@ ENTRY(__raw_writesw)
subs r2, r2, #2
orr ip, ip, r3, push_hbyte1
strh ip, [r0]
bpl 2b
bpl 1b
3: tst r2, #1
2: movne ip, r3, lsr #8
tst r2, #1
3: movne ip, r3, lsr #8
strneh ip, [r0]
mov pc, lr

3
arch/arm/mach-clps711x/Kconfig
View file

@ -10,6 +10,7 @@ config ARCH_AUTCPU12
config ARCH_CDB89712
bool "CDB89712"
select ISA
help
This is an evaluation board from Cirrus for the CS89712 processor.
The board includes 2 serial ports, Ethernet, IRDA, and expansion
@ -26,6 +27,8 @@ config ARCH_CLEP7312
config ARCH_EDB7211
bool "EDB7211"
select ISA
select DISCONTIGMEM
help
Say Y here if you intend to run this kernel on a Cirrus Logic EDB-7211
evaluation board.

12
arch/arm/mach-footbridge/Kconfig
View file

@ -5,6 +5,9 @@ menu "Footbridge Implementations"
config ARCH_CATS
bool "CATS"
select FOOTBRIDGE_HOST
select ISA
select ISA_DMA
select PCI
help
Say Y here if you intend to run this kernel on the CATS.
@ -13,6 +16,9 @@ config ARCH_CATS
config ARCH_PERSONAL_SERVER
bool "Compaq Personal Server"
select FOOTBRIDGE_HOST
select ISA
select ISA_DMA
select PCI
---help---
Say Y here if you intend to run this kernel on the Compaq
Personal Server.
@ -42,6 +48,9 @@ config ARCH_EBSA285_HOST
bool "EBSA285 (host mode)"
select ARCH_EBSA285
select FOOTBRIDGE_HOST
select ISA
select ISA_DMA
select PCI
help
Say Y here if you intend to run this kernel on the EBSA285 card
in host ("central function") mode.
@ -51,6 +60,9 @@ config ARCH_EBSA285_HOST
config ARCH_NETWINDER
bool "NetWinder"
select FOOTBRIDGE_HOST
select ISA
select ISA_DMA
select PCI
help
Say Y here if you intend to run this kernel on the Rebel.COM
NetWinder. Information about this machine can be found at:

1
arch/arm/mach-imx/Kconfig
View file

@ -4,6 +4,7 @@ menu "IMX Implementations"
config ARCH_MX1ADS
bool "mx1ads"
depends on ARCH_IMX
select ISA
help
Say Y here if you are using the Motorola MX1ADS board

10
arch/arm/mach-ixp4xx/common-pci.c
View file

@ -501,15 +501,6 @@ pci_set_dma_mask(struct pci_dev *dev, u64 mask)
return -EIO;
}
int
pci_dac_set_dma_mask(struct pci_dev *dev, u64 mask)
{
if (mask >= SZ_64M - 1 )
return 0;
return -EIO;
}
int
pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
{
@ -520,7 +511,6 @@ pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
}
EXPORT_SYMBOL(pci_set_dma_mask);
EXPORT_SYMBOL(pci_dac_set_dma_mask);
EXPORT_SYMBOL(pci_set_consistent_dma_mask);
EXPORT_SYMBOL(ixp4xx_pci_read);
EXPORT_SYMBOL(ixp4xx_pci_write);

9
arch/arm/mach-pxa/mainstone.c
View file

@ -304,6 +304,15 @@ static void __init mainstone_map_io(void)
PWER = 0xC0000002;
PRER = 0x00000002;
PFER = 0x00000002;
/* for use I SRAM as framebuffer. */
PSLR |= 0xF04;
PCFR = 0x66;
/* For Keypad wakeup. */
KPC &=~KPC_ASACT;
KPC |=KPC_AS;
PKWR = 0x000FD000;
/* Need read PKWR back after set it. */
PKWR;
}
MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")

32
arch/arm/mach-pxa/pm.c
View file

@ -29,9 +29,6 @@
*/
#undef DEBUG
extern void pxa_cpu_suspend(void);
extern void pxa_cpu_resume(void);
#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
@ -63,6 +60,12 @@ enum { SLEEP_SAVE_START = 0,
SLEEP_SAVE_ICMR,
SLEEP_SAVE_CKEN,
#ifdef CONFIG_PXA27x
SLEEP_SAVE_MDREFR,
SLEEP_SAVE_PWER, SLEEP_SAVE_PCFR, SLEEP_SAVE_PRER,
SLEEP_SAVE_PFER, SLEEP_SAVE_PKWR,
#endif
SLEEP_SAVE_CKSUM,
SLEEP_SAVE_SIZE
@ -75,9 +78,7 @@ static int pxa_pm_enter(suspend_state_t state)
unsigned long checksum = 0;
struct timespec delta, rtc;
int i;
if (state != PM_SUSPEND_MEM)
return -EINVAL;
extern void pxa_cpu_pm_enter(suspend_state_t state);
#ifdef CONFIG_IWMMXT
/* force any iWMMXt context to ram **/
@ -100,16 +101,17 @@ static int pxa_pm_enter(suspend_state_t state)
SAVE(GAFR2_L); SAVE(GAFR2_U);
#ifdef CONFIG_PXA27x
SAVE(MDREFR);
SAVE(GPLR3); SAVE(GPDR3); SAVE(GRER3); SAVE(GFER3); SAVE(PGSR3);
SAVE(GAFR3_L); SAVE(GAFR3_U);
SAVE(PWER); SAVE(PCFR); SAVE(PRER);
SAVE(PFER); SAVE(PKWR);
#endif
SAVE(ICMR);
ICMR = 0;
SAVE(CKEN);
CKEN = 0;
SAVE(PSTR);
/* Note: wake up source are set up in each machine specific files */
@ -123,16 +125,13 @@ static int pxa_pm_enter(suspend_state_t state)
/* Clear sleep reset status */
RCSR = RCSR_SMR;
/* set resume return address */
PSPR = virt_to_phys(pxa_cpu_resume);
/* before sleeping, calculate and save a checksum */
for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)
checksum += sleep_save[i];
sleep_save[SLEEP_SAVE_CKSUM] = checksum;
/* *** go zzz *** */
pxa_cpu_suspend();
pxa_cpu_pm_enter(state);
/* after sleeping, validate the checksum */
checksum = 0;
@ -145,7 +144,7 @@ static int pxa_pm_enter(suspend_state_t state)
LUB_HEXLED = 0xbadbadc5;
#endif
while (1)
pxa_cpu_suspend();
pxa_cpu_pm_enter(state);
}
/* ensure not to come back here if it wasn't intended */
@ -162,8 +161,11 @@ static int pxa_pm_enter(suspend_state_t state)
RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);
#ifdef CONFIG_PXA27x
RESTORE(MDREFR);
RESTORE(GAFR3_L); RESTORE(GAFR3_U); RESTORE_GPLEVEL(3);
RESTORE(GPDR3); RESTORE(GRER3); RESTORE(GFER3); RESTORE(PGSR3);
RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
RESTORE(PFER); RESTORE(PKWR);
#endif
PSSR = PSSR_RDH | PSSR_PH;
@ -197,7 +199,9 @@ unsigned long sleep_phys_sp(void *sp)
*/
static int pxa_pm_prepare(suspend_state_t state)
{
return 0;
extern int pxa_cpu_pm_prepare(suspend_state_t state);
return pxa_cpu_pm_prepare(state);
}
/*

33
arch/arm/mach-pxa/pxa25x.c
View file

@ -16,6 +16,7 @@
* initialization stuff for PXA machines which can be overridden later if
* need be.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
@ -102,3 +103,35 @@ unsigned int get_lcdclk_frequency_10khz(void)
}
EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
#ifdef CONFIG_PM
int pxa_cpu_pm_prepare(suspend_state_t state)
{
switch (state) {
case PM_SUSPEND_MEM:
break;
default:
return -EINVAL;
}
return 0;
}
void pxa_cpu_pm_enter(suspend_state_t state)
{
extern void pxa_cpu_suspend(unsigned int);
extern void pxa_cpu_resume(void);
CKEN = 0;
switch (state) {
case PM_SUSPEND_MEM:
/* set resume return address */
PSPR = virt_to_phys(pxa_cpu_resume);
pxa_cpu_suspend(3);
break;
}
}
#endif

36
arch/arm/mach-pxa/pxa27x.c
View file

@ -120,6 +120,42 @@ EXPORT_SYMBOL(get_clk_frequency_khz);
EXPORT_SYMBOL(get_memclk_frequency_10khz);
EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
#ifdef CONFIG_PM
int pxa_cpu_pm_prepare(suspend_state_t state)
{
switch (state) {
case PM_SUSPEND_MEM:
return 0;
default:
return -EINVAL;
}
}
void pxa_cpu_pm_enter(suspend_state_t state)
{
extern void pxa_cpu_standby(void);
extern void pxa_cpu_suspend(unsigned int);
extern void pxa_cpu_resume(void);
CKEN = CKEN22_MEMC | CKEN9_OSTIMER;
/* ensure voltage-change sequencer not initiated, which hangs */
PCFR &= ~PCFR_FVC;
/* Clear edge-detect status register. */
PEDR = 0xDF12FE1B;
switch (state) {
case PM_SUSPEND_MEM:
/* set resume return address */
PSPR = virt_to_phys(pxa_cpu_resume);
pxa_cpu_suspend(3);
break;
}
}
#endif
/*
* device registration specific to PXA27x.

2
arch/arm/mach-s3c2410/clock.c
View file

@ -478,7 +478,7 @@ static int s3c2440_clk_add(struct sys_device *sysdev)
{
unsigned long upllcon = __raw_readl(S3C2410_UPLLCON);
s3c2440_clk_upll.rate = s3c2410_get_pll(upllcon, clk_xtal.rate) * 2;
s3c2440_clk_upll.rate = s3c2410_get_pll(upllcon, clk_xtal.rate);
printk("S3C2440: Clock Support, UPLL %ld.%03ld MHz\n",
print_mhz(s3c2440_clk_upll.rate));

4
arch/arm/mach-s3c2410/dma.c
View file

@ -785,6 +785,10 @@ int s3c2410_dma_free(dmach_t channel, s3c2410_dma_client_t *client)
chan->client = NULL;
chan->in_use = 0;
if (chan->irq_claimed)
free_irq(chan->irq, (void *)chan);
chan->irq_claimed = 0;
local_irq_restore(flags);
return 0;

6
arch/arm/mach-s3c2410/s3c2440.c
View file

@ -192,9 +192,11 @@ void __init s3c2440_map_io(struct map_desc *mach_desc, int size)
iotable_init(s3c2440_iodesc, ARRAY_SIZE(s3c2440_iodesc));
iotable_init(mach_desc, size);
/* rename any peripherals used differing from the s3c2410 */
s3c_device_i2c.name = "s3c2440-i2c";
s3c_device_i2c.name = "s3c2440-i2c";
s3c_device_nand.name = "s3c2440-nand";
/* change irq for watchdog */
@ -225,7 +227,7 @@ void __init s3c2440_init_clocks(int xtal)
break;
case S3C2440_CLKDIVN_HDIVN_2:
hdiv = 1;
hdiv = 2;
break;
case S3C2440_CLKDIVN_HDIVN_4_8:

2
arch/arm/mach-sa1100/Kconfig
View file

@ -150,7 +150,7 @@ config SA1100_SSP
config H3600_SLEEVE
tristate "Compaq iPAQ Handheld sleeve support"
depends on SA1100_H3600
depends on SA1100_H3100 || SA1100_H3600
help
Choose this option to enable support for extension packs (sleeves)
for the Compaq iPAQ H3XXX series of handheld computers. This option

38
arch/arm/mm/Kconfig
View file

@ -228,7 +228,6 @@ config CPU_SA1100
select CPU_CACHE_V4WB
select CPU_CACHE_VIVT
select CPU_TLB_V4WB
select CPU_MINICACHE
# XScale
config CPU_XSCALE
@ -239,7 +238,6 @@ config CPU_XSCALE
select CPU_ABRT_EV5T
select CPU_CACHE_VIVT
select CPU_TLB_V4WBI
select CPU_MINICACHE
# ARMv6
config CPU_V6
@ -345,11 +343,6 @@ config CPU_TLB_V4WBI
config CPU_TLB_V6
bool
config CPU_MINICACHE
bool
help
Processor has a minicache.
comment "Processor Features"
config ARM_THUMB
@ -410,17 +403,30 @@ config CPU_BPREDICT_DISABLE
help
Say Y here to disable branch prediction. If unsure, say N.
config TLS_REG_EMUL
bool
default y if SMP && (CPU_32v5 || CPU_32v4 || CPU_32v3)
help
An SMP system using a pre-ARMv6 processor (there are apparently
a few prototypes like that in existence) and therefore access to
that required register must be emulated.
config HAS_TLS_REG
bool
depends on CPU_32v6 && !CPU_32v5 && !CPU_32v4 && !CPU_32v3
default y
depends on !TLS_REG_EMUL
default y if SMP || CPU_32v7
help
This selects support for the CP15 thread register.
It is defined to be available on ARMv6 or later. However
if the kernel is configured to support multiple CPUs including
a pre-ARMv6 processors, or if a given ARMv6 processor doesn't
implement the thread register for some reason, then access to
this register from user space must be trapped and emulated.
If user space is relying on the __kuser_get_tls code then
there should not be any impact.
It is defined to be available on some ARMv6 processors (including
all SMP capable ARMv6's) or later processors. User space may
assume directly accessing that register and always obtain the
expected value only on ARMv7 and above.
config NEEDS_SYSCALL_FOR_CMPXCHG
bool
default y if SMP && (CPU_32v5 || CPU_32v4 || CPU_32v3)
help
SMP on a pre-ARMv6 processor? Well OK then.
Forget about fast user space cmpxchg support.
It is just not possible.

2
arch/arm/mm/Makefile
View file

@ -31,8 +31,6 @@ obj-$(CONFIG_CPU_COPY_V6) += copypage-v6.o mmu.o
obj-$(CONFIG_CPU_SA1100) += copypage-v4mc.o
obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o
obj-$(CONFIG_CPU_MINICACHE) += minicache.o
obj-$(CONFIG_CPU_TLB_V3) += tlb-v3.o
obj-$(CONFIG_CPU_TLB_V4WT) += tlb-v4.o
obj-$(CONFIG_CPU_TLB_V4WB) += tlb-v4wb.o

80
arch/arm/mm/copypage-v4mc.S
View file

@ -1,80 +0,0 @@
/*
* linux/arch/arm/lib/copy_page-armv4mc.S
*
* Copyright (C) 1995-2001 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* ASM optimised string functions
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/constants.h>
.text
.align 5
/*
* ARMv4 mini-dcache optimised copy_user_page
*
* We flush the destination cache lines just before we write the data into the
* corresponding address. Since the Dcache is read-allocate, this removes the
* Dcache aliasing issue. The writes will be forwarded to the write buffer,
* and merged as appropriate.
*
* Note: We rely on all ARMv4 processors implementing the "invalidate D line"
* instruction. If your processor does not supply this, you have to write your
* own copy_user_page that does the right thing.
*/
ENTRY(v4_mc_copy_user_page)
stmfd sp!, {r4, lr} @ 2
mov r4, r0
mov r0, r1
bl map_page_minicache
mov r1, #PAGE_SZ/64 @ 1
ldmia r0!, {r2, r3, ip, lr} @ 4
1: mcr p15, 0, r4, c7, c6, 1 @ 1 invalidate D line
stmia r4!, {r2, r3, ip, lr} @ 4
ldmia r0!, {r2, r3, ip, lr} @ 4+1
stmia r4!, {r2, r3, ip, lr} @ 4
ldmia r0!, {r2, r3, ip, lr} @ 4
mcr p15, 0, r4, c7, c6, 1 @ 1 invalidate D line
stmia r4!, {r2, r3, ip, lr} @ 4
ldmia r0!, {r2, r3, ip, lr} @ 4
subs r1, r1, #1 @ 1
stmia r4!, {r2, r3, ip, lr} @ 4
ldmneia r0!, {r2, r3, ip, lr} @ 4
bne 1b @ 1
ldmfd sp!, {r4, pc} @ 3
.align 5
/*
* ARMv4 optimised clear_user_page
*
* Same story as above.
*/
ENTRY(v4_mc_clear_user_page)
str lr, [sp, #-4]!
mov r1, #PAGE_SZ/64 @ 1
mov r2, #0 @ 1
mov r3, #0 @ 1
mov ip, #0 @ 1
mov lr, #0 @ 1
1: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line
stmia r0!, {r2, r3, ip, lr} @ 4
stmia r0!, {r2, r3, ip, lr} @ 4
mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line
stmia r0!, {r2, r3, ip, lr} @ 4
stmia r0!, {r2, r3, ip, lr} @ 4
subs r1, r1, #1 @ 1
bne 1b @ 1
ldr pc, [sp], #4
__INITDATA
.type v4_mc_user_fns, #object
ENTRY(v4_mc_user_fns)
.long v4_mc_clear_user_page
.long v4_mc_copy_user_page
.size v4_mc_user_fns, . - v4_mc_user_fns

111
arch/arm/mm/copypage-v4mc.c Normal file
View file

@ -0,0 +1,111 @@
/*
* linux/arch/arm/lib/copypage-armv4mc.S
*
* Copyright (C) 1995-2005 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This handles the mini data cache, as found on SA11x0 and XScale
* processors. When we copy a user page page, we map it in such a way
* that accesses to this page will not touch the main data cache, but
* will be cached in the mini data cache. This prevents us thrashing
* the main data cache on page faults.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
/*
* 0xffff8000 to 0xffffffff is reserved for any ARM architecture
* specific hacks for copying pages efficiently.
*/
#define minicache_pgprot __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | \
L_PTE_CACHEABLE)
#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
static DEFINE_SPINLOCK(minicache_lock);
/*
* ARMv4 mini-dcache optimised copy_user_page
*
* We flush the destination cache lines just before we write the data into the
* corresponding address. Since the Dcache is read-allocate, this removes the
* Dcache aliasing issue. The writes will be forwarded to the write buffer,
* and merged as appropriate.
*
* Note: We rely on all ARMv4 processors implementing the "invalidate D line"
* instruction. If your processor does not supply this, you have to write your
* own copy_user_page that does the right thing.
*/
static void __attribute__((naked))
mc_copy_user_page(void *from, void *to)
{
asm volatile(
"stmfd sp!, {r4, lr} @ 2\n\
mov r4, %2 @ 1\n\
ldmia %0!, {r2, r3, ip, lr} @ 4\n\
1: mcr p15, 0, %1, c7, c6, 1 @ 1 invalidate D line\n\
stmia %1!, {r2, r3, ip, lr} @ 4\n\
ldmia %0!, {r2, r3, ip, lr} @ 4+1\n\
stmia %1!, {r2, r3, ip, lr} @ 4\n\
ldmia %0!, {r2, r3, ip, lr} @ 4\n\
mcr p15, 0, %1, c7, c6, 1 @ 1 invalidate D line\n\
stmia %1!, {r2, r3, ip, lr} @ 4\n\
ldmia %0!, {r2, r3, ip, lr} @ 4\n\
subs r4, r4, #1 @ 1\n\
stmia %1!, {r2, r3, ip, lr} @ 4\n\
ldmneia %0!, {r2, r3, ip, lr} @ 4\n\
bne 1b @ 1\n\
ldmfd sp!, {r4, pc} @ 3"
:
: "r" (from), "r" (to), "I" (PAGE_SIZE / 64));
}
void v4_mc_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
{
spin_lock(&minicache_lock);
set_pte(TOP_PTE(0xffff8000), pfn_pte(__pa(kfrom) >> PAGE_SHIFT, minicache_pgprot));
flush_tlb_kernel_page(0xffff8000);
mc_copy_user_page((void *)0xffff8000, kto);
spin_unlock(&minicache_lock);
}
/*
* ARMv4 optimised clear_user_page
*/
void __attribute__((naked))
v4_mc_clear_user_page(void *kaddr, unsigned long vaddr)
{
asm volatile(
"str lr, [sp, #-4]!\n\
mov r1, %0 @ 1\n\
mov r2, #0 @ 1\n\
mov r3, #0 @ 1\n\
mov ip, #0 @ 1\n\
mov lr, #0 @ 1\n\
1: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
stmia r0!, {r2, r3, ip, lr} @ 4\n\
stmia r0!, {r2, r3, ip, lr} @ 4\n\
mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\
stmia r0!, {r2, r3, ip, lr} @ 4\n\
stmia r0!, {r2, r3, ip, lr} @ 4\n\
subs r1, r1, #1 @ 1\n\
bne 1b @ 1\n\
ldr pc, [sp], #4"
:
: "I" (PAGE_SIZE / 64));
}
struct cpu_user_fns v4_mc_user_fns __initdata = {
.cpu_clear_user_page = v4_mc_clear_user_page,
.cpu_copy_user_page = v4_mc_copy_user_page,
};

28
arch/arm/mm/copypage-v6.c
View file

@ -26,8 +26,8 @@
#define to_address (0xffffc000)
#define to_pgprot PAGE_KERNEL
static pte_t *from_pte;
static pte_t *to_pte;
#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
static DEFINE_SPINLOCK(v6_lock);
#define DCACHE_COLOUR(vaddr) ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT)
@ -74,8 +74,8 @@ void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned long vadd
*/
spin_lock(&v6_lock);
set_pte(from_pte + offset, pfn_pte(__pa(kfrom) >> PAGE_SHIFT, from_pgprot));
set_pte(to_pte + offset, pfn_pte(__pa(kto) >> PAGE_SHIFT, to_pgprot));
set_pte(TOP_PTE(from_address) + offset, pfn_pte(__pa(kfrom) >> PAGE_SHIFT, from_pgprot));
set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kto) >> PAGE_SHIFT, to_pgprot));
from = from_address + (offset << PAGE_SHIFT);
to = to_address + (offset << PAGE_SHIFT);
@ -114,7 +114,7 @@ void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr)
*/
spin_lock(&v6_lock);
set_pte(to_pte + offset, pfn_pte(__pa(kaddr) >> PAGE_SHIFT, to_pgprot));
set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kaddr) >> PAGE_SHIFT, to_pgprot));
flush_tlb_kernel_page(to);
clear_page((void *)to);
@ -129,21 +129,6 @@ struct cpu_user_fns v6_user_fns __initdata = {
static int __init v6_userpage_init(void)
{
if (cache_is_vipt_aliasing()) {
pgd_t *pgd;
pmd_t *pmd;
pgd = pgd_offset_k(from_address);
pmd = pmd_alloc(&init_mm, pgd, from_address);
if (!pmd)
BUG();
from_pte = pte_alloc_kernel(&init_mm, pmd, from_address);
if (!from_pte)
BUG();
to_pte = pte_alloc_kernel(&init_mm, pmd, to_address);
if (!to_pte)
BUG();
cpu_user.cpu_clear_user_page = v6_clear_user_page_aliasing;
cpu_user.cpu_copy_user_page = v6_copy_user_page_aliasing;
}
@ -151,5 +136,4 @@ static int __init v6_userpage_init(void)
return 0;
}
__initcall(v6_userpage_init);
core_initcall(v6_userpage_init);

113
arch/arm/mm/copypage-xscale.S
View file

@ -1,113 +0,0 @@
/*
* linux/arch/arm/lib/copypage-xscale.S
*
* Copyright (C) 2001 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/constants.h>
/*
* General note:
* We don't really want write-allocate cache behaviour for these functions
* since that will just eat through 8K of the cache.
*/
.text
.align 5
/*
* XScale optimised copy_user_page
* r0 = destination
* r1 = source
* r2 = virtual user address of ultimate destination page
*
* The source page may have some clean entries in the cache already, but we
* can safely ignore them - break_cow() will flush them out of the cache
* if we eventually end up using our copied page.
*
* What we could do is use the mini-cache to buffer reads from the source
* page. We rely on the mini-cache being smaller than one page, so we'll
* cycle through the complete cache anyway.
*/
ENTRY(xscale_mc_copy_user_page)
stmfd sp!, {r4, r5, lr}
mov r5, r0
mov r0, r1
bl map_page_minicache
mov r1, r5
mov lr, #PAGE_SZ/64-1
/*
* Strangely enough, best performance is achieved
* when prefetching destination as well. (NP)
*/
pld [r0, #0]
pld [r0, #32]
pld [r1, #0]
pld [r1, #32]
1: pld [r0, #64]
pld [r0, #96]
pld [r1, #64]
pld [r1, #96]
2: ldrd r2, [r0], #8
ldrd r4, [r0], #8
mov ip, r1
strd r2, [r1], #8
ldrd r2, [r0], #8
strd r4, [r1], #8
ldrd r4, [r0], #8
strd r2, [r1], #8
strd r4, [r1], #8
mcr p15, 0, ip, c7, c10, 1 @ clean D line
ldrd r2, [r0], #8
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line
ldrd r4, [r0], #8
mov ip, r1
strd r2, [r1], #8
ldrd r2, [r0], #8
strd r4, [r1], #8
ldrd r4, [r0], #8
strd r2, [r1], #8
strd r4, [r1], #8
mcr p15, 0, ip, c7, c10, 1 @ clean D line
subs lr, lr, #1
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line
bgt 1b
beq 2b
ldmfd sp!, {r4, r5, pc}
.align 5
/*
* XScale optimised clear_user_page
* r0 = destination
* r1 = virtual user address of ultimate destination page
*/
ENTRY(xscale_mc_clear_user_page)
mov r1, #PAGE_SZ/32
mov r2, #0
mov r3, #0
1: mov ip, r0
strd r2, [r0], #8
strd r2, [r0], #8
strd r2, [r0], #8
strd r2, [r0], #8
mcr p15, 0, ip, c7, c10, 1 @ clean D line
subs r1, r1, #1
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line
bne 1b
mov pc, lr
__INITDATA
.type xscale_mc_user_fns, #object
ENTRY(xscale_mc_user_fns)
.long xscale_mc_clear_user_page
.long xscale_mc_copy_user_page
.size xscale_mc_user_fns, . - xscale_mc_user_fns

131
arch/arm/mm/copypage-xscale.c Normal file
View file

@ -0,0 +1,131 @@
/*
* linux/arch/arm/lib/copypage-xscale.S
*
* Copyright (C) 1995-2005 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This handles the mini data cache, as found on SA11x0 and XScale
* processors. When we copy a user page page, we map it in such a way
* that accesses to this page will not touch the main data cache, but
* will be cached in the mini data cache. This prevents us thrashing
* the main data cache on page faults.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
/*
* 0xffff8000 to 0xffffffff is reserved for any ARM architecture
* specific hacks for copying pages efficiently.
*/
#define COPYPAGE_MINICACHE 0xffff8000
#define minicache_pgprot __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | \
L_PTE_CACHEABLE)
#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
static DEFINE_SPINLOCK(minicache_lock);
/*
* XScale mini-dcache optimised copy_user_page
*
* We flush the destination cache lines just before we write the data into the
* corresponding address. Since the Dcache is read-allocate, this removes the
* Dcache aliasing issue. The writes will be forwarded to the write buffer,
* and merged as appropriate.
*/
static void __attribute__((naked))
mc_copy_user_page(void *from, void *to)
{
/*
* Strangely enough, best performance is achieved
* when prefetching destination as well. (NP)
*/
asm volatile(
"stmfd sp!, {r4, r5, lr} \n\
mov lr, %2 \n\
pld [r0, #0] \n\
pld [r0, #32] \n\
pld [r1, #0] \n\
pld [r1, #32] \n\
1: pld [r0, #64] \n\
pld [r0, #96] \n\
pld [r1, #64] \n\
pld [r1, #96] \n\
2: ldrd r2, [r0], #8 \n\
ldrd r4, [r0], #8 \n\
mov ip, r1 \n\
strd r2, [r1], #8 \n\
ldrd r2, [r0], #8 \n\
strd r4, [r1], #8 \n\
ldrd r4, [r0], #8 \n\
strd r2, [r1], #8 \n\
strd r4, [r1], #8 \n\
mcr p15, 0, ip, c7, c10, 1 @ clean D line\n\
ldrd r2, [r0], #8 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line\n\
ldrd r4, [r0], #8 \n\
mov ip, r1 \n\
strd r2, [r1], #8 \n\
ldrd r2, [r0], #8 \n\
strd r4, [r1], #8 \n\
ldrd r4, [r0], #8 \n\
strd r2, [r1], #8 \n\
strd r4, [r1], #8 \n\
mcr p15, 0, ip, c7, c10, 1 @ clean D line\n\
subs lr, lr, #1 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line\n\
bgt 1b \n\
beq 2b \n\
ldmfd sp!, {r4, r5, pc} "
:
: "r" (from), "r" (to), "I" (PAGE_SIZE / 64 - 1));
}
void xscale_mc_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
{
spin_lock(&minicache_lock);
set_pte(TOP_PTE(COPYPAGE_MINICACHE), pfn_pte(__pa(kfrom) >> PAGE_SHIFT, minicache_pgprot));
flush_tlb_kernel_page(COPYPAGE_MINICACHE);
mc_copy_user_page((void *)COPYPAGE_MINICACHE, kto);
spin_unlock(&minicache_lock);
}
/*
* XScale optimised clear_user_page
*/
void __attribute__((naked))
xscale_mc_clear_user_page(void *kaddr, unsigned long vaddr)
{
asm volatile(
"mov r1, %0 \n\
mov r2, #0 \n\
mov r3, #0 \n\
1: mov ip, r0 \n\
strd r2, [r0], #8 \n\
strd r2, [r0], #8 \n\
strd r2, [r0], #8 \n\
strd r2, [r0], #8 \n\
mcr p15, 0, ip, c7, c10, 1 @ clean D line\n\
subs r1, r1, #1 \n\
mcr p15, 0, ip, c7, c6, 1 @ invalidate D line\n\
bne 1b \n\
mov pc, lr"
:
: "I" (PAGE_SIZE / 32));
}
struct cpu_user_fns xscale_mc_user_fns __initdata = {
.cpu_clear_user_page = xscale_mc_clear_user_page,
.cpu_copy_user_page = xscale_mc_copy_user_page,
};

37
arch/arm/mm/flush.c
View file

@ -13,6 +13,29 @@
#include <asm/cacheflush.h>
#include <asm/system.h>
#include <asm/tlbflush.h>
#ifdef CONFIG_CPU_CACHE_VIPT
#define ALIAS_FLUSH_START 0xffff4000
#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
{
unsigned long to = ALIAS_FLUSH_START + (CACHE_COLOUR(vaddr) << PAGE_SHIFT);
set_pte(TOP_PTE(to), pfn_pte(pfn, PAGE_KERNEL));
flush_tlb_kernel_page(to);
asm( "mcrr p15, 0, %1, %0, c14\n"
" mcrr p15, 0, %1, %0, c5\n"
:
: "r" (to), "r" (to + PAGE_SIZE - L1_CACHE_BYTES)
: "cc");
}
#else
#define flush_pfn_alias(pfn,vaddr) do { } while (0)
#endif
static void __flush_dcache_page(struct address_space *mapping, struct page *page)
{
@ -36,6 +59,18 @@ static void __flush_dcache_page(struct address_space *mapping, struct page *page
if (!mapping)
return;
/*
* This is a page cache page. If we have a VIPT cache, we
* only need to do one flush - which would be at the relevant
* userspace colour, which is congruent with page->index.
*/
if (cache_is_vipt()) {
if (cache_is_vipt_aliasing())
flush_pfn_alias(page_to_pfn(page),
page->index << PAGE_CACHE_SHIFT);
return;
}
/*
* There are possible user space mappings of this page:
* - VIVT cache: we need to also write back and invalidate all user
@ -57,8 +92,6 @@ static void __flush_dcache_page(struct address_space *mapping, struct page *page
continue;
offset = (pgoff - mpnt->vm_pgoff) << PAGE_SHIFT;
flush_cache_page(mpnt, mpnt->vm_start + offset, page_to_pfn(page));
if (cache_is_vipt())
break;
}
flush_dcache_mmap_unlock(mapping);
}

73
arch/arm/mm/minicache.c
View file

@ -1,73 +0,0 @@
/*
* linux/arch/arm/mm/minicache.c
*
* Copyright (C) 2001 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This handles the mini data cache, as found on SA11x0 and XScale
* processors. When we copy a user page page, we map it in such a way
* that accesses to this page will not touch the main data cache, but
* will be cached in the mini data cache. This prevents us thrashing
* the main data cache on page faults.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
/*
* 0xffff8000 to 0xffffffff is reserved for any ARM architecture
* specific hacks for copying pages efficiently.
*/
#define minicache_address (0xffff8000)
#define minicache_pgprot __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | \
L_PTE_CACHEABLE)
static pte_t *minicache_pte;
/*
* Note that this is intended to be called only from the copy_user_page
* asm code; anything else will require special locking to prevent the
* mini-cache space being re-used. (Note: probably preempt unsafe).
*
* We rely on the fact that the minicache is 2K, and we'll be pushing
* 4K of data through it, so we don't actually have to specifically
* flush the minicache when we change the mapping.
*
* Note also: assert(PAGE_OFFSET <= virt < high_memory).
* Unsafe: preempt, kmap.
*/
unsigned long map_page_minicache(unsigned long virt)
{
set_pte(minicache_pte, pfn_pte(__pa(virt) >> PAGE_SHIFT, minicache_pgprot));
flush_tlb_kernel_page(minicache_address);
return minicache_address;
}
static int __init minicache_init(void)
{
pgd_t *pgd;
pmd_t *pmd;
spin_lock(&init_mm.page_table_lock);
pgd = pgd_offset_k(minicache_address);
pmd = pmd_alloc(&init_mm, pgd, minicache_address);
if (!pmd)
BUG();
minicache_pte = pte_alloc_kernel(&init_mm, pmd, minicache_address);
if (!minicache_pte)
BUG();
spin_unlock(&init_mm.page_table_lock);
return 0;
}
core_initcall(minicache_init);

27
arch/arm/mm/mm-armv.c
View file

@ -37,6 +37,8 @@ pgprot_t pgprot_kernel;
EXPORT_SYMBOL(pgprot_kernel);
pmd_t *top_pmd;
struct cachepolicy {
const char policy[16];
unsigned int cr_mask;
@ -142,6 +144,16 @@ __setup("noalign", noalign_setup);
#define FIRST_KERNEL_PGD_NR (FIRST_USER_PGD_NR + USER_PTRS_PER_PGD)
static inline pmd_t *pmd_off(pgd_t *pgd, unsigned long virt)
{
return pmd_offset(pgd, virt);
}
static inline pmd_t *pmd_off_k(unsigned long virt)
{
return pmd_off(pgd_offset_k(virt), virt);
}
/*
* need to get a 16k page for level 1
*/
@ -220,7 +232,7 @@ void free_pgd_slow(pgd_t *pgd)
return;
/* pgd is always present and good */
pmd = (pmd_t *)pgd;
pmd = pmd_off(pgd, 0);
if (pmd_none(*pmd))
goto free;
if (pmd_bad(*pmd)) {
@ -246,9 +258,8 @@ free:
static inline void
alloc_init_section(unsigned long virt, unsigned long phys, int prot)
{
pmd_t *pmdp;
pmd_t *pmdp = pmd_off_k(virt);
pmdp = pmd_offset(pgd_offset_k(virt), virt);
if (virt & (1 << 20))
pmdp++;
@ -283,11 +294,9 @@ alloc_init_supersection(unsigned long virt, unsigned long phys, int prot)
static inline void
alloc_init_page(unsigned long virt, unsigned long phys, unsigned int prot_l1, pgprot_t prot)
{
pmd_t *pmdp;
pmd_t *pmdp = pmd_off_k(virt);
pte_t *ptep;
pmdp = pmd_offset(pgd_offset_k(virt), virt);
if (pmd_none(*pmdp)) {
unsigned long pmdval;
ptep = alloc_bootmem_low_pages(2 * PTRS_PER_PTE *
@ -310,7 +319,7 @@ alloc_init_page(unsigned long virt, unsigned long phys, unsigned int prot_l1, pg
*/
static inline void clear_mapping(unsigned long virt)
{
pmd_clear(pmd_offset(pgd_offset_k(virt), virt));
pmd_clear(pmd_off_k(virt));
}
struct mem_types {
@ -578,7 +587,7 @@ void setup_mm_for_reboot(char mode)
PMD_TYPE_SECT;
if (cpu_arch <= CPU_ARCH_ARMv5)
pmdval |= PMD_BIT4;
pmd = pmd_offset(pgd + i, i << PGDIR_SHIFT);
pmd = pmd_off(pgd, i << PGDIR_SHIFT);
pmd[0] = __pmd(pmdval);
pmd[1] = __pmd(pmdval + (1 << (PGDIR_SHIFT - 1)));
flush_pmd_entry(pmd);
@ -675,6 +684,8 @@ void __init memtable_init(struct meminfo *mi)
flush_cache_all();
flush_tlb_all();
top_pmd = pmd_off_k(0xffff0000);
}
/*

4
arch/arm26/Kconfig
View file

@ -89,6 +89,10 @@ config PAGESIZE_16
machine with 4MB of memory.
endmenu
config ISA_DMA_API
bool
default y
menu "General setup"
# Compressed boot loader in ROM. Yes, we really want to ask about

2
arch/h8300/kernel/process.c
View file

@ -54,7 +54,7 @@ asmlinkage void ret_from_fork(void);
void default_idle(void)
{
while(1) {
if (need_resched()) {
if (!need_resched()) {
local_irq_enable();
__asm__("sleep");
local_irq_disable();

26
arch/i386/Kconfig
View file

@ -183,7 +183,7 @@ config M386
- "Winchip-C6" for original IDT Winchip.
- "Winchip-2" for IDT Winchip 2.
- "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
- "MediaGX/Geode" for Cyrix MediaGX aka Geode.
- "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
- "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
- "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
@ -311,12 +311,10 @@ config MWINCHIP3D
stores for this CPU, which can increase performance of some
operations.
config MGEODE
bool "MediaGX/Geode"
config MGEODEGX1
bool "GeodeGX1"
help
Select this for a Cyrix MediaGX aka Geode chip. Linux and GCC
treat this chip as a 586TSC with some extended instructions
and alignment reqirements.
Select this for a Geode GX1 (Cyrix MediaGX) chip.
config MCYRIXIII
bool "CyrixIII/VIA-C3"
@ -368,7 +366,7 @@ config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || X86_GENERIC
default "4" if X86_ELAN || M486 || M386
default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE
default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODEGX1
default "6" if MK7 || MK8 || MPENTIUMM
config RWSEM_GENERIC_SPINLOCK
@ -387,7 +385,7 @@ config GENERIC_CALIBRATE_DELAY
config X86_PPRO_FENCE
bool
depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODE
depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
default y
config X86_F00F_BUG
@ -417,7 +415,7 @@ config X86_POPAD_OK
config X86_ALIGNMENT_16
bool
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODE
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
default y
config X86_GOOD_APIC
@ -442,7 +440,7 @@ config X86_USE_3DNOW
config X86_OOSTORE
bool
depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MGEODE) && MTRR
depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
default y
config HPET_TIMER
@ -578,7 +576,7 @@ config X86_VISWS_APIC
config X86_TSC
bool
depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODE) && !X86_NUMAQ
depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1) && !X86_NUMAQ
default y
config X86_MCE
@ -1165,7 +1163,7 @@ config PCI_DIRECT
config PCI_MMCONFIG
bool
depends on PCI && (PCI_GOMMCONFIG || (PCI_GOANY && ACPI))
depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
select ACPI_BOOT
default y
@ -1173,6 +1171,10 @@ source "drivers/pci/pcie/Kconfig"
source "drivers/pci/Kconfig"
config ISA_DMA_API
bool
default y
config ISA
bool "ISA support"
depends on !(X86_VOYAGER || X86_VISWS)

6
arch/i386/Makefile
View file

@ -14,7 +14,7 @@
# 19990713 Artur Skawina <skawina@geocities.com>
# Added '-march' and '-mpreferred-stack-boundary' support
#
# Kianusch Sayah Karadji <kianusch@sk-tech.net>
# 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net>
# Added support for GEODE CPU
LDFLAGS := -m elf_i386
@ -54,8 +54,8 @@ cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686)
# AMD Elan support
cflags-$(CONFIG_X86_ELAN) += -march=i486
# MediaGX aka Geode support
cflags-$(CONFIG_MGEODE) += $(call cc-option,-march=pentium-mmx,-march=i586)
# Geode GX1 support
cflags-$(CONFIG_MGEODEGX1) += $(call cc-option,-march=pentium-mmx,-march=i486)
# -mregparm=3 works ok on gcc-3.0 and later
#

2
arch/i386/boot/bootsect.S
View file

@ -83,7 +83,7 @@ bugger_off_msg:
.ascii "\n"
.ascii "Remove disk and press any key to reboot . . .\r\n"
.byte 0
# Kernel attributes; used by setup

18
arch/i386/boot/video.S
View file

@ -1924,36 +1924,36 @@ skip10: movb %ah, %al
ret
store_edid:
pushw %es # just save all registers
pushw %ax
pushw %es # just save all registers
pushw %ax
pushw %bx
pushw %cx
pushw %dx
pushw %di
pushw %fs
pushw %fs
popw %es
movl $0x13131313, %eax # memset block with 0x13
movw $32, %cx
movw $0x140, %di
cld
rep
stosl
rep
stosl
movw $0x4f15, %ax # do VBE/DDC
movw $0x4f15, %ax # do VBE/DDC
movw $0x01, %bx
movw $0x00, %cx
movw $0x01, %dx
movw $0x140, %di
int $0x10
int $0x10
popw %di # restore all registers
popw %di # restore all registers
popw %dx
popw %cx
popw %bx
popw %ax
popw %es
popw %es
ret
# VIDEO_SELECT-only variables

2
arch/i386/kernel/Makefile
View file

@ -43,7 +43,7 @@ obj-$(CONFIG_SCx200) += scx200.o
# Note: kbuild does not track this dependency due to usage of .incbin
$(obj)/vsyscall.o: $(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so
targets += $(foreach F,int80 sysenter,vsyscall-$F.o vsyscall-$F.so)
targets += vsyscall.lds
targets += vsyscall-note.o vsyscall.lds
# The DSO images are built using a special linker script.
quiet_cmd_syscall = SYSCALL $@

2
arch/i386/kernel/acpi/boot.c
View file

@ -650,7 +650,7 @@ acpi_find_rsdp (void)
*/
rsdp_phys = acpi_scan_rsdp (0, 0x400);
if (!rsdp_phys)
rsdp_phys = acpi_scan_rsdp (0xE0000, 0xFFFFF);
rsdp_phys = acpi_scan_rsdp (0xE0000, 0x20000);
return rsdp_phys;
}

2
arch/i386/kernel/apm.c
View file

@ -1222,6 +1222,7 @@ static int suspend(int vetoable)
save_processor_state();
err = set_system_power_state(APM_STATE_SUSPEND);
ignore_normal_resume = 1;
restore_processor_state();
local_irq_disable();
@ -1229,7 +1230,6 @@ static int suspend(int vetoable)
spin_lock(&i8253_lock);
reinit_timer();
set_time();
ignore_normal_resume = 1;
spin_unlock(&i8253_lock);
write_sequnlock(&xtime_lock);

12
arch/i386/kernel/cpu/amd.c
View file

@ -24,9 +24,6 @@ __asm__(".align 4\nvide: ret");
static void __init init_amd(struct cpuinfo_x86 *c)
{
#ifdef CONFIG_X86_SMP
int cpu = c == &boot_cpu_data ? 0 : c - cpu_data;
#endif
u32 l, h;
int mbytes = num_physpages >> (20-PAGE_SHIFT);
int r;
@ -198,14 +195,19 @@ static void __init init_amd(struct cpuinfo_x86 *c)
c->x86_num_cores = 1;
}
#ifdef CONFIG_X86_SMP
#ifdef CONFIG_X86_HT
/*
* On a AMD dual core setup the lower bits of the APIC id
* distingush the cores. Assumes number of cores is a power
* of two.
*/
if (c->x86_num_cores > 1) {
cpu_core_id[cpu] = cpu >> hweight32(c->x86_num_cores - 1);
int cpu = smp_processor_id();
unsigned bits = 0;
while ((1 << bits) < c->x86_num_cores)
bits++;
cpu_core_id[cpu] = phys_proc_id[cpu] & ((1<<bits)-1);
phys_proc_id[cpu] >>= bits;
printk(KERN_INFO "CPU %d(%d) -> Core %d\n",
cpu, c->x86_num_cores, cpu_core_id[cpu]);
}

4
arch/i386/kernel/cpu/common.c
View file

@ -243,6 +243,10 @@ static void __init early_cpu_detect(void)
}
early_intel_workaround(c);
#ifdef CONFIG_X86_HT
phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
#endif
}
void __init generic_identify(struct cpuinfo_x86 * c)

14
arch/i386/kernel/cpu/cpufreq/Kconfig
View file

@ -23,7 +23,7 @@ config X86_ACPI_CPUFREQ
If in doubt, say N.
config ELAN_CPUFREQ
tristate "AMD Elan"
tristate "AMD Elan SC400 and SC410"
select CPU_FREQ_TABLE
depends on X86_ELAN
---help---
@ -38,6 +38,18 @@ config ELAN_CPUFREQ
If in doubt, say N.
config SC520_CPUFREQ
tristate "AMD Elan SC520"
select CPU_FREQ_TABLE
depends on X86_ELAN
---help---
This adds the CPUFreq driver for AMD Elan SC520 processor.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
config X86_POWERNOW_K6
tristate "AMD Mobile K6-2/K6-3 PowerNow!"
select CPU_FREQ_TABLE

1
arch/i386/kernel/cpu/cpufreq/Makefile
View file

@ -3,6 +3,7 @@ obj-$(CONFIG_X86_POWERNOW_K7) += powernow-k7.o
obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o
obj-$(CONFIG_X86_LONGHAUL) += longhaul.o
obj-$(CONFIG_ELAN_CPUFREQ) += elanfreq.o
obj-$(CONFIG_SC520_CPUFREQ) += sc520_freq.o
obj-$(CONFIG_X86_LONGRUN) += longrun.o
obj-$(CONFIG_X86_GX_SUSPMOD) += gx-suspmod.o
obj-$(CONFIG_X86_SPEEDSTEP_ICH) += speedstep-ich.o

58
arch/i386/kernel/cpu/cpufreq/longhaul.c
View file

@ -29,6 +29,7 @@
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <asm/msr.h>
#include <asm/timex.h>
@ -119,7 +120,13 @@ static int longhaul_get_cpu_mult(void)
static void do_powersaver(union msr_longhaul *longhaul,
unsigned int clock_ratio_index)
{
struct pci_dev *dev;
unsigned long flags;
unsigned int tmp_mask;
int version;
int i;
u16 pci_cmd;
u16 cmd_state[64];
switch (cpu_model) {
case CPU_EZRA_T:
@ -137,17 +144,58 @@ static void do_powersaver(union msr_longhaul *longhaul,
longhaul->bits.SoftBusRatio4 = (clock_ratio_index & 0x10) >> 4;
longhaul->bits.EnableSoftBusRatio = 1;
longhaul->bits.RevisionKey = 0;
local_irq_disable();
wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
preempt_disable();
local_irq_save(flags);
/*
* get current pci bus master state for all devices
* and clear bus master bit
*/
dev = NULL;
i = 0;
do {
dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
if (dev != NULL) {
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
cmd_state[i++] = pci_cmd;
pci_cmd &= ~PCI_COMMAND_MASTER;
pci_write_config_word(dev, PCI_COMMAND, pci_cmd);
}
} while (dev != NULL);
tmp_mask=inb(0x21); /* works on C3. save mask. */
outb(0xFE,0x21); /* TMR0 only */
outb(0xFF,0x80); /* delay */
local_irq_enable();
__hlt();
wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
__hlt();
local_irq_disable();
outb(tmp_mask,0x21); /* restore mask */
/* restore pci bus master state for all devices */
dev = NULL;
i = 0;
do {
dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
if (dev != NULL) {
pci_cmd = cmd_state[i++];
pci_write_config_byte(dev, PCI_COMMAND, pci_cmd);
}
} while (dev != NULL);
local_irq_restore(flags);
preempt_enable();
/* disable bus ratio bit */
rdmsrl(MSR_VIA_LONGHAUL, longhaul->val);
longhaul->bits.EnableSoftBusRatio = 0;
longhaul->bits.RevisionKey = version;
local_irq_disable();
wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
local_irq_enable();
}
/**
@ -578,7 +626,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
longhaul_setup_voltagescaling();
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cpuinfo.transition_latency = 200000; /* nsec */
policy->cur = calc_speed(longhaul_get_cpu_mult());
ret = cpufreq_frequency_table_cpuinfo(policy, longhaul_table);

11
arch/i386/kernel/cpu/cpufreq/powernow-k7.c
View file

@ -23,6 +23,7 @@
#include <linux/dmi.h>
#include <asm/msr.h>
#include <asm/timer.h>
#include <asm/timex.h>
#include <asm/io.h>
#include <asm/system.h>
@ -586,13 +587,17 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy)
rdmsrl (MSR_K7_FID_VID_STATUS, fidvidstatus.val);
/* A K7 with powernow technology is set to max frequency by BIOS */
fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.MFID];
/* recalibrate cpu_khz */
result = recalibrate_cpu_khz();
if (result)
return result;
fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.CFID];
if (!fsb) {
printk(KERN_WARNING PFX "can not determine bus frequency\n");
return -EINVAL;
}
dprintk("FSB: %3d.%03d MHz\n", fsb/1000, fsb%1000);
dprintk("FSB: %3dMHz\n", fsb/1000);
if (dmi_check_system(powernow_dmi_table) || acpi_force) {
printk (KERN_INFO PFX "PSB/PST known to be broken. Trying ACPI instead\n");

113
arch/i386/kernel/cpu/cpufreq/powernow-k8.c
View file

@ -4,7 +4,7 @@
* GNU general public license version 2. See "COPYING" or
* http://www.gnu.org/licenses/gpl.html
*
* Support : paul.devriendt@amd.com
* Support : mark.langsdorf@amd.com
*
* Based on the powernow-k7.c module written by Dave Jones.
* (C) 2003 Dave Jones <davej@codemonkey.org.uk> on behalf of SuSE Labs
@ -15,12 +15,13 @@
*
* Valuable input gratefully received from Dave Jones, Pavel Machek,
* Dominik Brodowski, and others.
* Originally developed by Paul Devriendt.
* Processor information obtained from Chapter 9 (Power and Thermal Management)
* of the "BIOS and Kernel Developer's Guide for the AMD Athlon 64 and AMD
* Opteron Processors" available for download from www.amd.com
*
* Tables for specific CPUs can be infrerred from
* http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf
* http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf
*/
#include <linux/kernel.h>
@ -30,6 +31,7 @@
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/cpumask.h>
#include <asm/msr.h>
#include <asm/io.h>
@ -42,7 +44,7 @@
#define PFX "powernow-k8: "
#define BFX PFX "BIOS error: "
#define VERSION "version 1.00.09e"
#define VERSION "version 1.40.2"
#include "powernow-k8.h"
/* serialize freq changes */
@ -50,6 +52,10 @@ static DECLARE_MUTEX(fidvid_sem);
static struct powernow_k8_data *powernow_data[NR_CPUS];
#ifndef CONFIG_SMP
static cpumask_t cpu_core_map[1];
#endif
/* Return a frequency in MHz, given an input fid */
static u32 find_freq_from_fid(u32 fid)
{
@ -274,11 +280,18 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid
{
u32 rvosteps = data->rvo;
u32 savefid = data->currfid;
u32 maxvid, lo;
dprintk("ph1 (cpu%d): start, currfid 0x%x, currvid 0x%x, reqvid 0x%x, rvo 0x%x\n",
smp_processor_id(),
data->currfid, data->currvid, reqvid, data->rvo);
rdmsr(MSR_FIDVID_STATUS, lo, maxvid);
maxvid = 0x1f & (maxvid >> 16);
dprintk("ph1 maxvid=0x%x\n", maxvid);
if (reqvid < maxvid) /* lower numbers are higher voltages */
reqvid = maxvid;
while (data->currvid > reqvid) {
dprintk("ph1: curr 0x%x, req vid 0x%x\n",
data->currvid, reqvid);
@ -286,8 +299,8 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid
return 1;
}
while ((rvosteps > 0) && ((data->rvo + data->currvid) > reqvid)) {
if (data->currvid == 0) {
while ((rvosteps > 0) && ((data->rvo + data->currvid) > reqvid)) {
if (data->currvid == maxvid) {
rvosteps = 0;
} else {
dprintk("ph1: changing vid for rvo, req 0x%x\n",
@ -671,7 +684,7 @@ static int find_psb_table(struct powernow_k8_data *data)
* BIOS and Kernel Developer's Guide, which is available on
* www.amd.com
*/
printk(KERN_ERR PFX "BIOS error - no PSB\n");
printk(KERN_INFO PFX "BIOS error - no PSB or ACPI _PSS objects\n");
return -ENODEV;
}
@ -695,7 +708,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
struct cpufreq_frequency_table *powernow_table;
if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) {
dprintk("register performance failed\n");
dprintk("register performance failed: bad ACPI data\n");
return -EIO;
}
@ -746,22 +759,23 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
continue;
}
if (fid < HI_FID_TABLE_BOTTOM) {
if (cntlofreq) {
/* if both entries are the same, ignore this
* one...
*/
if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) ||
(powernow_table[i].index != powernow_table[cntlofreq].index)) {
printk(KERN_ERR PFX "Too many lo freq table entries\n");
goto err_out_mem;
}
dprintk("double low frequency table entry, ignoring it.\n");
powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
continue;
} else
cntlofreq = i;
/* verify only 1 entry from the lo frequency table */
if (fid < HI_FID_TABLE_BOTTOM) {
if (cntlofreq) {
/* if both entries are the same, ignore this
* one...
*/
if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) ||
(powernow_table[i].index != powernow_table[cntlofreq].index)) {
printk(KERN_ERR PFX "Too many lo freq table entries\n");
goto err_out_mem;
}
dprintk("double low frequency table entry, ignoring it.\n");
powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
continue;
} else
cntlofreq = i;
}
if (powernow_table[i].frequency != (data->acpi_data.states[i].core_frequency * 1000)) {
@ -816,7 +830,7 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
{
u32 fid;
u32 vid;
int res;
int res, i;
struct cpufreq_freqs freqs;
dprintk("cpu %d transition to index %u\n", smp_processor_id(), index);
@ -841,7 +855,8 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
}
if ((fid < HI_FID_TABLE_BOTTOM) && (data->currfid < HI_FID_TABLE_BOTTOM)) {
printk("ignoring illegal change in lo freq table-%x to 0x%x\n",
printk(KERN_ERR PFX
"ignoring illegal change in lo freq table-%x to 0x%x\n",
data->currfid, fid);
return 1;
}
@ -850,18 +865,20 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
smp_processor_id(), fid, vid);
freqs.cpu = data->cpu;
freqs.old = find_khz_freq_from_fid(data->currfid);
freqs.new = find_khz_freq_from_fid(fid);
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
for_each_cpu_mask(i, cpu_core_map[data->cpu]) {
freqs.cpu = i;
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
}
down(&fidvid_sem);
res = transition_fid_vid(data, fid, vid);
up(&fidvid_sem);
freqs.new = find_khz_freq_from_fid(data->currfid);
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
for_each_cpu_mask(i, cpu_core_map[data->cpu]) {
freqs.cpu = i;
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
}
return res;
}
@ -874,6 +891,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
u32 checkvid = data->currvid;
unsigned int newstate;
int ret = -EIO;
int i;
/* only run on specific CPU from here on */
oldmask = current->cpus_allowed;
@ -902,22 +920,41 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
data->currfid, data->currvid);
if ((checkvid != data->currvid) || (checkfid != data->currfid)) {
printk(KERN_ERR PFX
"error - out of sync, fid 0x%x 0x%x, vid 0x%x 0x%x\n",
checkfid, data->currfid, checkvid, data->currvid);
printk(KERN_INFO PFX
"error - out of sync, fix 0x%x 0x%x, vid 0x%x 0x%x\n",
checkfid, data->currfid, checkvid, data->currvid);
}
if (cpufreq_frequency_table_target(pol, data->powernow_table, targfreq, relation, &newstate))
goto err_out;
down(&fidvid_sem);
for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
/* make sure the sibling is initialized */
if (!powernow_data[i]) {
ret = 0;
up(&fidvid_sem);
goto err_out;
}
}
powernow_k8_acpi_pst_values(data, newstate);
if (transition_frequency(data, newstate)) {
printk(KERN_ERR PFX "transition frequency failed\n");
ret = 1;
up(&fidvid_sem);
goto err_out;
}
/* Update all the fid/vids of our siblings */
for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
powernow_data[i]->currvid = data->currvid;
powernow_data[i]->currfid = data->currfid;
}
up(&fidvid_sem);
pol->cur = find_khz_freq_from_fid(data->currfid);
ret = 0;
@ -962,7 +999,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
*/
if ((num_online_cpus() != 1) || (num_possible_cpus() != 1)) {
printk(KERN_INFO PFX "MP systems not supported by PSB BIOS structure\n");
printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n");
kfree(data);
return -ENODEV;
}
@ -1003,6 +1040,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
schedule();
pol->governor = CPUFREQ_DEFAULT_GOVERNOR;
pol->cpus = cpu_core_map[pol->cpu];
/* Take a crude guess here.
* That guess was in microseconds, so multiply with 1000 */
@ -1069,7 +1107,7 @@ static unsigned int powernowk8_get (unsigned int cpu)
return 0;
}
preempt_disable();
if (query_current_values_with_pending_wait(data))
goto out;
@ -1127,9 +1165,10 @@ static void __exit powernowk8_exit(void)
cpufreq_unregister_driver(&cpufreq_amd64_driver);
}
MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com>");
MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com> and Mark Langsdorf <mark.langsdorf@amd.com.");
MODULE_DESCRIPTION("AMD Athlon 64 and Opteron processor frequency driver.");
MODULE_LICENSE("GPL");
late_initcall(powernowk8_init);
module_exit(powernowk8_exit);

15
arch/i386/kernel/cpu/cpufreq/powernow-k8.h
View file

@ -174,3 +174,18 @@ static int core_voltage_post_transition(struct powernow_k8_data *data, u32 reqvi
static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid);
static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index);
#ifndef for_each_cpu_mask
#define for_each_cpu_mask(i,mask) for (i=0;i<1;i++)
#endif
#ifdef CONFIG_SMP
static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
{
}
#else
static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
{
cpu_set(0, cpu_sharedcore_mask[0]);
}
#endif

186
arch/i386/kernel/cpu/cpufreq/sc520_freq.c Normal file
View file

@ -0,0 +1,186 @@
/*
* sc520_freq.c: cpufreq driver for the AMD Elan sc520
*
* Copyright (C) 2005 Sean Young <sean@mess.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; either version
* 2 of the License, or (at your option) any later version.
*
* Based on elanfreq.c
*
* 2005-03-30: - initial revision
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/cpufreq.h>
#include <asm/msr.h>
#include <asm/timex.h>
#include <asm/io.h>
#define MMCR_BASE 0xfffef000 /* The default base address */
#define OFFS_CPUCTL 0x2 /* CPU Control Register */
static __u8 __iomem *cpuctl;
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "sc520_freq", msg)
static struct cpufreq_frequency_table sc520_freq_table[] = {
{0x01, 100000},
{0x02, 133000},
{0, CPUFREQ_TABLE_END},
};
static unsigned int sc520_freq_get_cpu_frequency(unsigned int cpu)
{
u8 clockspeed_reg = *cpuctl;
switch (clockspeed_reg & 0x03) {
default:
printk(KERN_ERR "sc520_freq: error: cpuctl register has unexpected value %02x\n", clockspeed_reg);
case 0x01:
return 100000;
case 0x02:
return 133000;
}
}
static void sc520_freq_set_cpu_state (unsigned int state)
{
struct cpufreq_freqs freqs;
u8 clockspeed_reg;
freqs.old = sc520_freq_get_cpu_frequency(0);
freqs.new = sc520_freq_table[state].frequency;
freqs.cpu = 0; /* AMD Elan is UP */
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
dprintk("attempting to set frequency to %i kHz\n",
sc520_freq_table[state].frequency);
local_irq_disable();
clockspeed_reg = *cpuctl & ~0x03;
*cpuctl = clockspeed_reg | sc520_freq_table[state].index;
local_irq_enable();
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
};
static int sc520_freq_verify (struct cpufreq_policy *policy)
{
return cpufreq_frequency_table_verify(policy, &sc520_freq_table[0]);
}
static int sc520_freq_target (struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
unsigned int newstate = 0;
if (cpufreq_frequency_table_target(policy, sc520_freq_table, target_freq, relation, &newstate))
return -EINVAL;
sc520_freq_set_cpu_state(newstate);
return 0;
}
/*
* Module init and exit code
*/
static int sc520_freq_cpu_init(struct cpufreq_policy *policy)
{
struct cpuinfo_x86 *c = cpu_data;
int result;
/* capability check */
if (c->x86_vendor != X86_VENDOR_AMD ||
c->x86 != 4 || c->x86_model != 9)
return -ENODEV;
/* cpuinfo and default policy values */
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
policy->cpuinfo.transition_latency = 1000000; /* 1ms */
policy->cur = sc520_freq_get_cpu_frequency(0);
result = cpufreq_frequency_table_cpuinfo(policy, sc520_freq_table);
if (result)
return (result);
cpufreq_frequency_table_get_attr(sc520_freq_table, policy->cpu);
return 0;
}
static int sc520_freq_cpu_exit(struct cpufreq_policy *policy)
{
cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}
static struct freq_attr* sc520_freq_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
NULL,
};
static struct cpufreq_driver sc520_freq_driver = {
.get = sc520_freq_get_cpu_frequency,
.verify = sc520_freq_verify,
.target = sc520_freq_target,
.init = sc520_freq_cpu_init,
.exit = sc520_freq_cpu_exit,
.name = "sc520_freq",
.owner = THIS_MODULE,
.attr = sc520_freq_attr,
};
static int __init sc520_freq_init(void)
{
struct cpuinfo_x86 *c = cpu_data;
/* Test if we have the right hardware */
if(c->x86_vendor != X86_VENDOR_AMD ||
c->x86 != 4 || c->x86_model != 9) {
dprintk("no Elan SC520 processor found!\n");
return -ENODEV;
}
cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1);
if(!cpuctl) {
printk(KERN_ERR "sc520_freq: error: failed to remap memory\n");
return -ENOMEM;
}
return cpufreq_register_driver(&sc520_freq_driver);
}
static void __exit sc520_freq_exit(void)
{
cpufreq_unregister_driver(&sc520_freq_driver);
iounmap(cpuctl);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Sean Young <sean@mess.org>");
MODULE_DESCRIPTION("cpufreq driver for AMD's Elan sc520 CPU");
module_init(sc520_freq_init);
module_exit(sc520_freq_exit);

6
arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
View file

@ -54,6 +54,8 @@ enum {
CPU_DOTHAN_A1,
CPU_DOTHAN_A2,
CPU_DOTHAN_B0,
CPU_MP4HT_D0,
CPU_MP4HT_E0,
};
static const struct cpu_id cpu_ids[] = {
@ -61,6 +63,8 @@ static const struct cpu_id cpu_ids[] = {
[CPU_DOTHAN_A1] = { 6, 13, 1 },
[CPU_DOTHAN_A2] = { 6, 13, 2 },
[CPU_DOTHAN_B0] = { 6, 13, 6 },
[CPU_MP4HT_D0] = {15, 3, 4 },
[CPU_MP4HT_E0] = {15, 4, 1 },
};
#define N_IDS (sizeof(cpu_ids)/sizeof(cpu_ids[0]))
@ -226,6 +230,8 @@ static struct cpu_model models[] =
{ &cpu_ids[CPU_DOTHAN_A1], NULL, 0, NULL },
{ &cpu_ids[CPU_DOTHAN_A2], NULL, 0, NULL },
{ &cpu_ids[CPU_DOTHAN_B0], NULL, 0, NULL },
{ &cpu_ids[CPU_MP4HT_D0], NULL, 0, NULL },
{ &cpu_ids[CPU_MP4HT_E0], NULL, 0, NULL },
{ NULL, }
};

6
arch/i386/kernel/cpu/cpufreq/speedstep-lib.c
View file

@ -336,7 +336,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
if (!prev_speed)
return -EIO;
dprintk("previous seped is %u\n", prev_speed);
dprintk("previous speed is %u\n", prev_speed);
local_irq_save(flags);
@ -348,7 +348,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
goto out;
}
dprintk("low seped is %u\n", *low_speed);
dprintk("low speed is %u\n", *low_speed);
/* switch to high state */
set_state(SPEEDSTEP_HIGH);
@ -358,7 +358,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
goto out;
}
dprintk("high seped is %u\n", *high_speed);
dprintk("high speed is %u\n", *high_speed);
if (*low_speed == *high_speed) {
ret = -ENODEV;

3
arch/i386/kernel/cpu/cpufreq/speedstep-smi.c
View file

@ -357,6 +357,9 @@ static int __init speedstep_init(void)
case SPEEDSTEP_PROCESSOR_PIII_C:
case SPEEDSTEP_PROCESSOR_PIII_C_EARLY:
break;
case SPEEDSTEP_PROCESSOR_P4M:
printk(KERN_INFO "speedstep-smi: you're trying to use this cpufreq driver on a Pentium 4-based CPU. Most likely it will not work.\n");
break;
default:
speedstep_processor = 0;
}

2
arch/i386/kernel/cpu/intel_cacheinfo.c
View file

@ -118,7 +118,7 @@ struct _cpuid4_info {
};
#define MAX_CACHE_LEAVES 4
static unsigned short __devinitdata num_cache_leaves;
static unsigned short num_cache_leaves;
static int __devinit cpuid4_cache_lookup(int index, struct _cpuid4_info *this_leaf)
{

4
arch/i386/kernel/cpu/mtrr/cyrix.c
View file

@ -218,12 +218,12 @@ typedef struct {
mtrr_type type;
} arr_state_t;
static arr_state_t arr_state[8] __initdata = {
static arr_state_t arr_state[8] __devinitdata = {
{0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL},
{0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}, {0UL, 0UL, 0UL}
};
static unsigned char ccr_state[7] __initdata = { 0, 0, 0, 0, 0, 0, 0 };
static unsigned char ccr_state[7] __devinitdata = { 0, 0, 0, 0, 0, 0, 0 };
static void cyrix_set_all(void)
{

4
arch/i386/kernel/i386_ksyms.c
View file

@ -169,10 +169,6 @@ EXPORT_SYMBOL(rtc_lock);
EXPORT_SYMBOL_GPL(set_nmi_callback);
EXPORT_SYMBOL_GPL(unset_nmi_callback);
#undef memcmp
extern int memcmp(const void *,const void *,__kernel_size_t);
EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(register_die_notifier);
#ifdef CONFIG_HAVE_DEC_LOCK
EXPORT_SYMBOL(_atomic_dec_and_lock);

7
arch/i386/kernel/kprobes.c
View file

@ -217,6 +217,13 @@ static void resume_execution(struct kprobe *p, struct pt_regs *regs)
*tos &= ~(TF_MASK | IF_MASK);
*tos |= kprobe_old_eflags;
break;
case 0xc3: /* ret/lret */
case 0xcb:
case 0xc2:
case 0xca:
regs->eflags &= ~TF_MASK;
/* eip is already adjusted, no more changes required*/
return;
case 0xe8: /* call relative - Fix return addr */
*tos = orig_eip + (*tos - copy_eip);
break;

13
arch/i386/kernel/process.c
View file

@ -400,11 +400,6 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long esp,
int err;
childregs = ((struct pt_regs *) (THREAD_SIZE + (unsigned long) p->thread_info)) - 1;
*childregs = *regs;
childregs->eax = 0;
childregs->esp = esp;
p->thread.esp = (unsigned long) childregs;
/*
* The below -8 is to reserve 8 bytes on top of the ring0 stack.
* This is necessary to guarantee that the entire "struct pt_regs"
@ -415,7 +410,13 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long esp,
* "struct pt_regs" is possible, but they may contain the
* completely wrong values.
*/
p->thread.esp0 = (unsigned long) (childregs+1) - 8;
childregs = (struct pt_regs *) ((unsigned long) childregs - 8);
*childregs = *regs;
childregs->eax = 0;
childregs->esp = esp;
p->thread.esp = (unsigned long) childregs;
p->thread.esp0 = (unsigned long) (childregs+1);
p->thread.eip = (unsigned long) ret_from_fork;

19
arch/i386/kernel/ptrace.c
View file

@ -683,24 +683,18 @@ void do_syscall_trace(struct pt_regs *regs, int entryexit)
/* do the secure computing check first */
secure_computing(regs->orig_eax);
if (unlikely(current->audit_context)) {
if (!entryexit)
audit_syscall_entry(current, regs->orig_eax,
regs->ebx, regs->ecx,
regs->edx, regs->esi);
else
audit_syscall_exit(current, regs->eax);
}
if (unlikely(current->audit_context) && entryexit)
audit_syscall_exit(current, AUDITSC_RESULT(regs->eax), regs->eax);
if (!(current->ptrace & PT_PTRACED))
return;
goto out;
/* Fake a debug trap */
if (test_thread_flag(TIF_SINGLESTEP))
send_sigtrap(current, regs, 0);
if (!test_thread_flag(TIF_SYSCALL_TRACE))
return;
goto out;
/* the 0x80 provides a way for the tracing parent to distinguish
between a syscall stop and SIGTRAP delivery */
@ -715,4 +709,9 @@ void do_syscall_trace(struct pt_regs *regs, int entryexit)
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
out:
if (unlikely(current->audit_context) && !entryexit)
audit_syscall_entry(current, AUDIT_ARCH_I386, regs->orig_eax,
regs->ebx, regs->ecx, regs->edx, regs->esi);
}

2
arch/i386/kernel/setup.c
View file

@ -1502,11 +1502,13 @@ void __init setup_arch(char **cmdline_p)
if (efi_enabled)
efi_map_memmap();
#ifdef CONFIG_ACPI_BOOT
/*
* Parse the ACPI tables for possible boot-time SMP configuration.
*/
acpi_boot_table_init();
acpi_boot_init();
#endif
#ifdef CONFIG_X86_LOCAL_APIC
if (smp_found_config)

5
arch/i386/kernel/smpboot.c
View file

@ -888,6 +888,7 @@ void *xquad_portio;
cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
EXPORT_SYMBOL(cpu_core_map);
static void __init smp_boot_cpus(unsigned int max_cpus)
{
@ -1073,8 +1074,10 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
cpu_set(cpu, cpu_sibling_map[cpu]);
}
if (siblings != smp_num_siblings)
if (siblings != smp_num_siblings) {
printk(KERN_WARNING "WARNING: %d siblings found for CPU%d, should be %d\n", siblings, cpu, smp_num_siblings);
smp_num_siblings = siblings;
}
if (c->x86_num_cores > 1) {
for (i = 0; i < NR_CPUS; i++) {

6
arch/i386/kernel/timers/common.c
View file

@ -6,6 +6,7 @@
#include <linux/timex.h>
#include <linux/errno.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <asm/io.h>
#include <asm/timer.h>
@ -24,7 +25,7 @@
#define CALIBRATE_TIME (5 * 1000020/HZ)
unsigned long __init calibrate_tsc(void)
unsigned long calibrate_tsc(void)
{
mach_prepare_counter();
@ -139,7 +140,7 @@ bad_calibration:
#endif
/* calculate cpu_khz */
void __init init_cpu_khz(void)
void init_cpu_khz(void)
{
if (cpu_has_tsc) {
unsigned long tsc_quotient = calibrate_tsc();
@ -158,3 +159,4 @@ void __init init_cpu_khz(void)
}
}
}

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