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Merge branch 'linus' into tracing/core 

Merge reason: tracing/core was on an older, pre-rc1 base.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-07-18 12:19:57 +02:00
parent 6f2f3cf00e 78af08d90b
commit 45bceffc30
1707 changed files with 38100 additions and 20703 deletions
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1
.gitignore vendored
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@ -27,6 +27,7 @@
*.gz
*.lzma
*.patch
*.gcno
#
# Top-level generic files

2
Documentation/DocBook/mac80211.tmpl
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@ -184,8 +184,6 @@ usage should require reading the full document.
!Finclude/net/mac80211.h ieee80211_ctstoself_get
!Finclude/net/mac80211.h ieee80211_ctstoself_duration
!Finclude/net/mac80211.h ieee80211_generic_frame_duration
!Finclude/net/mac80211.h ieee80211_get_hdrlen_from_skb
!Finclude/net/mac80211.h ieee80211_hdrlen
!Finclude/net/mac80211.h ieee80211_wake_queue
!Finclude/net/mac80211.h ieee80211_stop_queue
!Finclude/net/mac80211.h ieee80211_wake_queues

4
Documentation/block/data-integrity.txt
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@ -50,7 +50,7 @@ encouraged them to allow separation of the data and integrity metadata
scatter-gather lists.
The controller will interleave the buffers on write and split them on
read. This means that the Linux can DMA the data buffers to and from
read. This means that Linux can DMA the data buffers to and from
host memory without changes to the page cache.
Also, the 16-bit CRC checksum mandated by both the SCSI and SATA specs
@ -66,7 +66,7 @@ software RAID5).
The IP checksum is weaker than the CRC in terms of detecting bit
errors. However, the strength is really in the separation of the data
buffers and the integrity metadata. These two distinct buffers much
buffers and the integrity metadata. These two distinct buffers must
match up for an I/O to complete.
The separation of the data and integrity metadata buffers as well as

12
Documentation/cgroups/cpusets.txt
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@ -777,6 +777,18 @@ in cpuset directories:
# /bin/echo 1-4 > cpus -> set cpus list to cpus 1,2,3,4
# /bin/echo 1,2,3,4 > cpus -> set cpus list to cpus 1,2,3,4
To add a CPU to a cpuset, write the new list of CPUs including the
CPU to be added. To add 6 to the above cpuset:
# /bin/echo 1-4,6 > cpus -> set cpus list to cpus 1,2,3,4,6
Similarly to remove a CPU from a cpuset, write the new list of CPUs
without the CPU to be removed.
To remove all the CPUs:
# /bin/echo "" > cpus -> clear cpus list
2.3 Setting flags
-----------------

54
Documentation/device-mapper/dm-log.txt Normal file
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@ -0,0 +1,54 @@
Device-Mapper Logging
=====================
The device-mapper logging code is used by some of the device-mapper
RAID targets to track regions of the disk that are not consistent.
A region (or portion of the address space) of the disk may be
inconsistent because a RAID stripe is currently being operated on or
a machine died while the region was being altered. In the case of
mirrors, a region would be considered dirty/inconsistent while you
are writing to it because the writes need to be replicated for all
the legs of the mirror and may not reach the legs at the same time.
Once all writes are complete, the region is considered clean again.
There is a generic logging interface that the device-mapper RAID
implementations use to perform logging operations (see
dm_dirty_log_type in include/linux/dm-dirty-log.h). Various different
logging implementations are available and provide different
capabilities. The list includes:
Type Files
==== =====
disk drivers/md/dm-log.c
core drivers/md/dm-log.c
userspace drivers/md/dm-log-userspace* include/linux/dm-log-userspace.h
The "disk" log type
-------------------
This log implementation commits the log state to disk. This way, the
logging state survives reboots/crashes.
The "core" log type
-------------------
This log implementation keeps the log state in memory. The log state
will not survive a reboot or crash, but there may be a small boost in
performance. This method can also be used if no storage device is
available for storing log state.
The "userspace" log type
------------------------
This log type simply provides a way to export the log API to userspace,
so log implementations can be done there. This is done by forwarding most
logging requests to userspace, where a daemon receives and processes the
request.
The structure used for communication between kernel and userspace are
located in include/linux/dm-log-userspace.h. Due to the frequency,
diversity, and 2-way communication nature of the exchanges between
kernel and userspace, 'connector' is used as the interface for
communication.
There are currently two userspace log implementations that leverage this
framework - "clustered_disk" and "clustered_core". These implementations
provide a cluster-coherent log for shared-storage. Device-mapper mirroring
can be used in a shared-storage environment when the cluster log implementations
are employed.

39
Documentation/device-mapper/dm-queue-length.txt Normal file
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@ -0,0 +1,39 @@
dm-queue-length
===============
dm-queue-length is a path selector module for device-mapper targets,
which selects a path with the least number of in-flight I/Os.
The path selector name is 'queue-length'.
Table parameters for each path: [<repeat_count>]
<repeat_count>: The number of I/Os to dispatch using the selected
path before switching to the next path.
If not given, internal default is used. To check
the default value, see the activated table.
Status for each path: <status> <fail-count> <in-flight>
<status>: 'A' if the path is active, 'F' if the path is failed.
<fail-count>: The number of path failures.
<in-flight>: The number of in-flight I/Os on the path.
Algorithm
=========
dm-queue-length increments/decrements 'in-flight' when an I/O is
dispatched/completed respectively.
dm-queue-length selects a path with the minimum 'in-flight'.
Examples
========
In case that 2 paths (sda and sdb) are used with repeat_count == 128.
# echo "0 10 multipath 0 0 1 1 queue-length 0 2 1 8:0 128 8:16 128" \
dmsetup create test
#
# dmsetup table
test: 0 10 multipath 0 0 1 1 queue-length 0 2 1 8:0 128 8:16 128
#
# dmsetup status
test: 0 10 multipath 2 0 0 0 1 1 E 0 2 1 8:0 A 0 0 8:16 A 0 0

91
Documentation/device-mapper/dm-service-time.txt Normal file
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@ -0,0 +1,91 @@
dm-service-time
===============
dm-service-time is a path selector module for device-mapper targets,
which selects a path with the shortest estimated service time for
the incoming I/O.
The service time for each path is estimated by dividing the total size
of in-flight I/Os on a path with the performance value of the path.
The performance value is a relative throughput value among all paths
in a path-group, and it can be specified as a table argument.
The path selector name is 'service-time'.
Table parameters for each path: [<repeat_count> [<relative_throughput>]]
<repeat_count>: The number of I/Os to dispatch using the selected
path before switching to the next path.
If not given, internal default is used. To check
the default value, see the activated table.
<relative_throughput>: The relative throughput value of the path
among all paths in the path-group.
The valid range is 0-100.
If not given, minimum value '1' is used.
If '0' is given, the path isn't selected while
other paths having a positive value are available.
Status for each path: <status> <fail-count> <in-flight-size> \
<relative_throughput>
<status>: 'A' if the path is active, 'F' if the path is failed.
<fail-count>: The number of path failures.
<in-flight-size>: The size of in-flight I/Os on the path.
<relative_throughput>: The relative throughput value of the path
among all paths in the path-group.
Algorithm
=========
dm-service-time adds the I/O size to 'in-flight-size' when the I/O is
dispatched and substracts when completed.
Basically, dm-service-time selects a path having minimum service time
which is calculated by:
('in-flight-size' + 'size-of-incoming-io') / 'relative_throughput'
However, some optimizations below are used to reduce the calculation
as much as possible.
1. If the paths have the same 'relative_throughput', skip
the division and just compare the 'in-flight-size'.
2. If the paths have the same 'in-flight-size', skip the division
and just compare the 'relative_throughput'.
3. If some paths have non-zero 'relative_throughput' and others
have zero 'relative_throughput', ignore those paths with zero
'relative_throughput'.
If such optimizations can't be applied, calculate service time, and
compare service time.
If calculated service time is equal, the path having maximum
'relative_throughput' may be better. So compare 'relative_throughput'
then.
Examples
========
In case that 2 paths (sda and sdb) are used with repeat_count == 128
and sda has an average throughput 1GB/s and sdb has 4GB/s,
'relative_throughput' value may be '1' for sda and '4' for sdb.
# echo "0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 1 8:16 128 4" \
dmsetup create test
#
# dmsetup table
test: 0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 1 8:16 128 4
#
# dmsetup status
test: 0 10 multipath 2 0 0 0 1 1 E 0 2 2 8:0 A 0 0 1 8:16 A 0 0 4
Or '2' for sda and '8' for sdb would be also true.
# echo "0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 2 8:16 128 8" \
dmsetup create test
#
# dmsetup table
test: 0 10 multipath 0 0 1 1 service-time 0 2 2 8:0 128 2 8:16 128 8
#
# dmsetup status
test: 0 10 multipath 2 0 0 0 1 1 E 0 2 2 8:0 A 0 0 2 8:16 A 0 0 8

4
Documentation/driver-model/driver.txt
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@ -207,8 +207,8 @@ Attributes
~~~~~~~~~~
struct driver_attribute {
struct attribute attr;
ssize_t (*show)(struct device_driver *, char * buf, size_t count, loff_t off);
ssize_t (*store)(struct device_driver *, const char * buf, size_t count, loff_t off);
ssize_t (*show)(struct device_driver *driver, char *buf);
ssize_t (*store)(struct device_driver *, const char * buf, size_t count);
};
Device drivers can export attributes via their sysfs directories.

53
Documentation/dvb/get_dvb_firmware
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@ -25,7 +25,7 @@ use IO::Handle;
"tda10046lifeview", "av7110", "dec2000t", "dec2540t",
"dec3000s", "vp7041", "dibusb", "nxt2002", "nxt2004",
"or51211", "or51132_qam", "or51132_vsb", "bluebird",
"opera1", "cx231xx", "cx18", "cx23885", "pvrusb2" );
"opera1", "cx231xx", "cx18", "cx23885", "pvrusb2", "mpc718" );
# Check args
syntax() if (scalar(@ARGV) != 1);
@ -381,6 +381,57 @@ sub cx18 {
$allfiles;
}
sub mpc718 {
my $archive = 'Yuan MPC718 TV Tuner Card 2.13.10.1016.zip';
my $url = "ftp://ftp.work.acer-euro.com/desktop/aspire_idea510/vista/Drivers/$archive";
my $fwfile = "dvb-cx18-mpc718-mt352.fw";
my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
checkstandard();
wgetfile($archive, $url);
unzip($archive, $tmpdir);
my $sourcefile = "$tmpdir/Yuan MPC718 TV Tuner Card 2.13.10.1016/mpc718_32bit/yuanrap.sys";
my $found = 0;
open IN, '<', $sourcefile or die "Couldn't open $sourcefile to extract $fwfile data\n";
binmode IN;
open OUT, '>', $fwfile;
binmode OUT;
{
# Block scope because we change the line terminator variable $/
my $prevlen = 0;
my $currlen;
# Buried in the data segment are 3 runs of almost identical
# register-value pairs that end in 0x5d 0x01 which is a "TUNER GO"
# command for the MT352.
# Pull out the middle run (because it's easy) of register-value
# pairs to make the "firmware" file.
local $/ = "\x5d\x01"; # MT352 "TUNER GO"
while (<IN>) {
$currlen = length($_);
if ($prevlen == $currlen && $currlen <= 64) {
chop; chop; # Get rid of "TUNER GO"
s/^\0\0//; # get rid of leading 00 00 if it's there
printf OUT "$_";
$found = 1;
last;
}
$prevlen = $currlen;
}
}
close OUT;
close IN;
if (!$found) {
unlink $fwfile;
die "Couldn't find valid register-value sequence in $sourcefile for $fwfile\n";
}
$fwfile;
}
sub cx23885 {
my $url = "http://linuxtv.org/downloads/firmware/";

10
Documentation/feature-removal-schedule.txt
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@ -458,3 +458,13 @@ Why: Remove the old legacy 32bit machine check code. This has been
but the old version has been kept around for easier testing. Note this
doesn't impact the old P5 and WinChip machine check handlers.
Who: Andi Kleen <andi@firstfloor.org>
----------------------------
What: lock_policy_rwsem_* and unlock_policy_rwsem_* will not be
exported interface anymore.
When: 2.6.33
Why: cpu_policy_rwsem has a new cleaner definition making it local to
cpufreq core and contained inside cpufreq.c. Other dependent
drivers should not use it in order to safely avoid lockdep issues.
Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>

41
Documentation/filesystems/Locking
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@ -109,27 +109,28 @@ prototypes:
locking rules:
All may block.
BKL s_lock s_umount
alloc_inode: no no no
destroy_inode: no
dirty_inode: no (must not sleep)
write_inode: no
drop_inode: no !!!inode_lock!!!
delete_inode: no
put_super: yes yes no
write_super: no yes read
sync_fs: no no read
freeze_fs: ?
unfreeze_fs: ?
statfs: no no no
remount_fs: yes yes maybe (see below)
clear_inode: no
umount_begin: yes no no
show_options: no (vfsmount->sem)
quota_read: no no no (see below)
quota_write: no no no (see below)
None have BKL
s_umount
alloc_inode:
destroy_inode:
dirty_inode: (must not sleep)
write_inode:
drop_inode: !!!inode_lock!!!
delete_inode:
put_super: write
write_super: read
sync_fs: read
freeze_fs: read
unfreeze_fs: read
statfs: no
remount_fs: maybe (see below)
clear_inode:
umount_begin: no
show_options: no (namespace_sem)
quota_read: no (see below)
quota_write: no (see below)
->remount_fs() will have the s_umount lock if it's already mounted.
->remount_fs() will have the s_umount exclusive lock if it's already mounted.
When called from get_sb_single, it does NOT have the s_umount lock.
->quota_read() and ->quota_write() functions are both guaranteed to
be the only ones operating on the quota file by the quota code (via

25
Documentation/gcov.txt
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@ -188,13 +188,18 @@ Solution: Exclude affected source files from profiling by specifying
GCOV_PROFILE := n or GCOV_PROFILE_basename.o := n in the
corresponding Makefile.
Problem: Files copied from sysfs appear empty or incomplete.
Cause: Due to the way seq_file works, some tools such as cp or tar
may not correctly copy files from sysfs.
Solution: Use 'cat' to read .gcda files and 'cp -d' to copy links.
Alternatively use the mechanism shown in Appendix B.
Appendix A: gather_on_build.sh
==============================
Sample script to gather coverage meta files on the build machine
(see 6a):
#!/bin/bash
KSRC=$1
@ -226,7 +231,7 @@ Appendix B: gather_on_test.sh
Sample script to gather coverage data files on the test machine
(see 6b):
#!/bin/bash
#!/bin/bash -e
DEST=$1
GCDA=/sys/kernel/debug/gcov
@ -236,11 +241,13 @@ if [ -z "$DEST" ] ; then
exit 1
fi
find $GCDA -name '*.gcno' -o -name '*.gcda' | tar cfz $DEST -T -
TEMPDIR=$(mktemp -d)
echo Collecting data..
find $GCDA -type d -exec mkdir -p $TEMPDIR/\{\} \;
find $GCDA -name '*.gcda' -exec sh -c 'cat < $0 > '$TEMPDIR'/$0' {} \;
find $GCDA -name '*.gcno' -exec sh -c 'cp -d $0 '$TEMPDIR'/$0' {} \;
tar czf $DEST -C $TEMPDIR sys
rm -rf $TEMPDIR
if [ $? -eq 0 ] ; then
echo "$DEST successfully created, copy to build system and unpack with:"
echo " tar xfz $DEST"
else
echo "Could not create file $DEST"
fi
echo "$DEST successfully created, copy to build system and unpack with:"
echo " tar xfz $DEST"

20
Documentation/kernel-parameters.txt
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@ -229,14 +229,6 @@ and is between 256 and 4096 characters. It is defined in the file
to assume that this machine's pmtimer latches its value
and always returns good values.
acpi.power_nocheck= [HW,ACPI]
Format: 1/0 enable/disable the check of power state.
On some bogus BIOS the _PSC object/_STA object of
power resource can't return the correct device power
state. In such case it is unneccessary to check its
power state again in power transition.
1 : disable the power state check
acpi_sci= [HW,ACPI] ACPI System Control Interrupt trigger mode
Format: { level | edge | high | low }
@ -1728,8 +1720,8 @@ and is between 256 and 4096 characters. It is defined in the file
oprofile.cpu_type= Force an oprofile cpu type
This might be useful if you have an older oprofile
userland or if you want common events.
Format: { archperfmon }
archperfmon: [X86] Force use of architectural
Format: { arch_perfmon }
arch_perfmon: [X86] Force use of architectural
perfmon on Intel CPUs instead of the
CPU specific event set.
@ -1863,7 +1855,7 @@ and is between 256 and 4096 characters. It is defined in the file
IRQ routing is enabled.
noacpi [X86] Do not use ACPI for IRQ routing
or for PCI scanning.
nocrs [X86] Don't use _CRS for PCI resource
use_crs [X86] Use _CRS for PCI resource
allocation.
routeirq Do IRQ routing for all PCI devices.
This is normally done in pci_enable_device(),
@ -1923,6 +1915,12 @@ and is between 256 and 4096 characters. It is defined in the file
Format: { 0 | 1 }
See arch/parisc/kernel/pdc_chassis.c
percpu_alloc= [X86] Select which percpu first chunk allocator to use.
Allowed values are one of "lpage", "embed" and "4k".
See comments in arch/x86/kernel/setup_percpu.c for
details on each allocator. This parameter is primarily
for debugging and performance comparison.
pf. [PARIDE]
See Documentation/blockdev/paride.txt.

23
Documentation/kmemleak.txt
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@ -16,13 +16,17 @@ Usage
-----
CONFIG_DEBUG_KMEMLEAK in "Kernel hacking" has to be enabled. A kernel
thread scans the memory every 10 minutes (by default) and prints any new
unreferenced objects found. To trigger an intermediate scan and display
all the possible memory leaks:
thread scans the memory every 10 minutes (by default) and prints the
number of new unreferenced objects found. To display the details of all
the possible memory leaks:
# mount -t debugfs nodev /sys/kernel/debug/
# cat /sys/kernel/debug/kmemleak
To trigger an intermediate memory scan:
# echo scan > /sys/kernel/debug/kmemleak
Note that the orphan objects are listed in the order they were allocated
and one object at the beginning of the list may cause other subsequent
objects to be reported as orphan.
@ -31,16 +35,21 @@ Memory scanning parameters can be modified at run-time by writing to the
/sys/kernel/debug/kmemleak file. The following parameters are supported:
off - disable kmemleak (irreversible)
stack=on - enable the task stacks scanning
stack=on - enable the task stacks scanning (default)
stack=off - disable the tasks stacks scanning
scan=on - start the automatic memory scanning thread
scan=on - start the automatic memory scanning thread (default)
scan=off - stop the automatic memory scanning thread
scan=<secs> - set the automatic memory scanning period in seconds (0
to disable it)
scan=<secs> - set the automatic memory scanning period in seconds
(default 600, 0 to stop the automatic scanning)
scan - trigger a memory scan
Kmemleak can also be disabled at boot-time by passing "kmemleak=off" on
the kernel command line.
Memory may be allocated or freed before kmemleak is initialised and
these actions are stored in an early log buffer. The size of this buffer
is configured via the CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE option.
Basic Algorithm
---------------

47
Documentation/laptops/thinkpad-acpi.txt
View File

@ -920,7 +920,7 @@ The available commands are:
echo '<LED number> off' >/proc/acpi/ibm/led
echo '<LED number> blink' >/proc/acpi/ibm/led
The <LED number> range is 0 to 7. The set of LEDs that can be
The <LED number> range is 0 to 15. The set of LEDs that can be
controlled varies from model to model. Here is the common ThinkPad
mapping:
@ -932,6 +932,11 @@ mapping:
5 - UltraBase battery slot
6 - (unknown)
7 - standby
8 - dock status 1
9 - dock status 2
10, 11 - (unknown)
12 - thinkvantage
13, 14, 15 - (unknown)
All of the above can be turned on and off and can be made to blink.
@ -940,10 +945,12 @@ sysfs notes:
The ThinkPad LED sysfs interface is described in detail by the LED class
documentation, in Documentation/leds-class.txt.
The leds are named (in LED ID order, from 0 to 7):
The LEDs are named (in LED ID order, from 0 to 12):
"tpacpi::power", "tpacpi:orange:batt", "tpacpi:green:batt",
"tpacpi::dock_active", "tpacpi::bay_active", "tpacpi::dock_batt",
"tpacpi::unknown_led", "tpacpi::standby".
"tpacpi::unknown_led", "tpacpi::standby", "tpacpi::dock_status1",
"tpacpi::dock_status2", "tpacpi::unknown_led2", "tpacpi::unknown_led3",
"tpacpi::thinkvantage".
Due to limitations in the sysfs LED class, if the status of the LED
indicators cannot be read due to an error, thinkpad-acpi will report it as
@ -958,6 +965,12 @@ ThinkPad indicator LED should blink in hardware accelerated mode, use the
"timer" trigger, and leave the delay_on and delay_off parameters set to
zero (to request hardware acceleration autodetection).
LEDs that are known not to exist in a given ThinkPad model are not
made available through the sysfs interface. If you have a dock and you
notice there are LEDs listed for your ThinkPad that do not exist (and
are not in the dock), or if you notice that there are missing LEDs,
a report to ibm-acpi-devel@lists.sourceforge.net is appreciated.
ACPI sounds -- /proc/acpi/ibm/beep
----------------------------------
@ -1156,17 +1169,19 @@ may not be distinct. Later Lenovo models that implement the ACPI
display backlight brightness control methods have 16 levels, ranging
from 0 to 15.
There are two interfaces to the firmware for direct brightness control,
EC and UCMS (or CMOS). To select which one should be used, use the
brightness_mode module parameter: brightness_mode=1 selects EC mode,
brightness_mode=2 selects UCMS mode, brightness_mode=3 selects EC
mode with NVRAM backing (so that brightness changes are remembered
across shutdown/reboot).
For IBM ThinkPads, there are two interfaces to the firmware for direct
brightness control, EC and UCMS (or CMOS). To select which one should be
used, use the brightness_mode module parameter: brightness_mode=1 selects
EC mode, brightness_mode=2 selects UCMS mode, brightness_mode=3 selects EC
mode with NVRAM backing (so that brightness changes are remembered across
shutdown/reboot).
The driver tries to select which interface to use from a table of
defaults for each ThinkPad model. If it makes a wrong choice, please
report this as a bug, so that we can fix it.
Lenovo ThinkPads only support brightness_mode=2 (UCMS).
When display backlight brightness controls are available through the
standard ACPI interface, it is best to use it instead of this direct
ThinkPad-specific interface. The driver will disable its native
@ -1254,7 +1269,7 @@ Fan control and monitoring: fan speed, fan enable/disable
procfs: /proc/acpi/ibm/fan
sysfs device attributes: (hwmon "thinkpad") fan1_input, pwm1,
pwm1_enable
pwm1_enable, fan2_input
sysfs hwmon driver attributes: fan_watchdog
NOTE NOTE NOTE: fan control operations are disabled by default for
@ -1267,6 +1282,9 @@ from the hardware registers of the embedded controller. This is known
to work on later R, T, X and Z series ThinkPads but may show a bogus
value on other models.
Some Lenovo ThinkPads support a secondary fan. This fan cannot be
controlled separately, it shares the main fan control.
Fan levels:
Most ThinkPad fans work in "levels" at the firmware interface. Level 0
@ -1397,6 +1415,11 @@ hwmon device attribute fan1_input:
which can take up to two minutes. May return rubbish on older
ThinkPads.
hwmon device attribute fan2_input:
Fan tachometer reading, in RPM, for the secondary fan.
Available only on some ThinkPads. If the secondary fan is
not installed, will always read 0.
hwmon driver attribute fan_watchdog:
Fan safety watchdog timer interval, in seconds. Minimum is
1 second, maximum is 120 seconds. 0 disables the watchdog.
@ -1555,3 +1578,7 @@ Sysfs interface changelog:
0x020300: hotkey enable/disable support removed, attributes
hotkey_bios_enabled and hotkey_enable deprecated and
marked for removal.
0x020400: Marker for 16 LEDs support. Also, LEDs that are known
to not exist in a given model are not registered with
the LED sysfs class anymore.

50
Documentation/leds-lp3944.txt Normal file
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@ -0,0 +1,50 @@
Kernel driver lp3944
====================
* National Semiconductor LP3944 Fun-light Chip
Prefix: 'lp3944'
Addresses scanned: None (see the Notes section below)
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LP/LP3944.html
Authors:
Antonio Ospite <ospite@studenti.unina.it>
Description
-----------
The LP3944 is a helper chip that can drive up to 8 leds, with two programmable
DIM modes; it could even be used as a gpio expander but this driver assumes it
is used as a led controller.
The DIM modes are used to set _blink_ patterns for leds, the pattern is
specified supplying two parameters:
- period: from 0s to 1.6s
- duty cycle: percentage of the period the led is on, from 0 to 100
Setting a led in DIM0 or DIM1 mode makes it blink according to the pattern.
See the datasheet for details.
LP3944 can be found on Motorola A910 smartphone, where it drives the rgb
leds, the camera flash light and the lcds power.
Notes
-----
The chip is used mainly in embedded contexts, so this driver expects it is
registered using the i2c_board_info mechanism.
To register the chip at address 0x60 on adapter 0, set the platform data
according to include/linux/leds-lp3944.h, set the i2c board info:
static struct i2c_board_info __initdata a910_i2c_board_info[] = {
{
I2C_BOARD_INFO("lp3944", 0x60),
.platform_data = &a910_lp3944_leds,
},
};
and register it in the platform init function
i2c_register_board_info(0, a910_i2c_board_info,
ARRAY_SIZE(a910_i2c_board_info));

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4xx/Axon EMAC ethernet nodes
The EMAC ethernet controller in IBM and AMCC 4xx chips, and also
the Axon bridge. To operate this needs to interact with a ths
special McMAL DMA controller, and sometimes an RGMII or ZMII
interface. In addition to the nodes and properties described
below, the node for the OPB bus on which the EMAC sits must have a
correct clock-frequency property.
i) The EMAC node itself
Required properties:
- device_type : "network"
- compatible : compatible list, contains 2 entries, first is
"ibm,emac-CHIP" where CHIP is the host ASIC (440gx,
405gp, Axon) and second is either "ibm,emac" or
"ibm,emac4". For Axon, thus, we have: "ibm,emac-axon",
"ibm,emac4"
- interrupts : <interrupt mapping for EMAC IRQ and WOL IRQ>
- interrupt-parent : optional, if needed for interrupt mapping
- reg : <registers mapping>
- local-mac-address : 6 bytes, MAC address
- mal-device : phandle of the associated McMAL node
- mal-tx-channel : 1 cell, index of the tx channel on McMAL associated
with this EMAC
- mal-rx-channel : 1 cell, index of the rx channel on McMAL associated
with this EMAC
- cell-index : 1 cell, hardware index of the EMAC cell on a given
ASIC (typically 0x0 and 0x1 for EMAC0 and EMAC1 on
each Axon chip)
- max-frame-size : 1 cell, maximum frame size supported in bytes
- rx-fifo-size : 1 cell, Rx fifo size in bytes for 10 and 100 Mb/sec
operations.
For Axon, 2048
- tx-fifo-size : 1 cell, Tx fifo size in bytes for 10 and 100 Mb/sec
operations.
For Axon, 2048.
- fifo-entry-size : 1 cell, size of a fifo entry (used to calculate
thresholds).
For Axon, 0x00000010
- mal-burst-size : 1 cell, MAL burst size (used to calculate thresholds)
in bytes.
For Axon, 0x00000100 (I think ...)
- phy-mode : string, mode of operations of the PHY interface.
Supported values are: "mii", "rmii", "smii", "rgmii",
"tbi", "gmii", rtbi", "sgmii".
For Axon on CAB, it is "rgmii"
- mdio-device : 1 cell, required iff using shared MDIO registers
(440EP). phandle of the EMAC to use to drive the
MDIO lines for the PHY used by this EMAC.
- zmii-device : 1 cell, required iff connected to a ZMII. phandle of
the ZMII device node
- zmii-channel : 1 cell, required iff connected to a ZMII. Which ZMII
channel or 0xffffffff if ZMII is only used for MDIO.
- rgmii-device : 1 cell, required iff connected to an RGMII. phandle
of the RGMII device node.
For Axon: phandle of plb5/plb4/opb/rgmii
- rgmii-channel : 1 cell, required iff connected to an RGMII. Which
RGMII channel is used by this EMAC.
Fox Axon: present, whatever value is appropriate for each
EMAC, that is the content of the current (bogus) "phy-port"
property.
Optional properties:
- phy-address : 1 cell, optional, MDIO address of the PHY. If absent,
a search is performed.
- phy-map : 1 cell, optional, bitmap of addresses to probe the PHY
for, used if phy-address is absent. bit 0x00000001 is
MDIO address 0.
For Axon it can be absent, though my current driver
doesn't handle phy-address yet so for now, keep
0x00ffffff in it.
- rx-fifo-size-gige : 1 cell, Rx fifo size in bytes for 1000 Mb/sec
operations (if absent the value is the same as
rx-fifo-size). For Axon, either absent or 2048.
- tx-fifo-size-gige : 1 cell, Tx fifo size in bytes for 1000 Mb/sec
operations (if absent the value is the same as
tx-fifo-size). For Axon, either absent or 2048.
- tah-device : 1 cell, optional. If connected to a TAH engine for
offload, phandle of the TAH device node.
- tah-channel : 1 cell, optional. If appropriate, channel used on the
TAH engine.
Example:
EMAC0: ethernet@40000800 {
device_type = "network";
compatible = "ibm,emac-440gp", "ibm,emac";
interrupt-parent = <&UIC1>;
interrupts = <1c 4 1d 4>;
reg = <40000800 70>;
local-mac-address = [00 04 AC E3 1B 1E];
mal-device = <&MAL0>;
mal-tx-channel = <0 1>;
mal-rx-channel = <0>;
cell-index = <0>;
max-frame-size = <5dc>;
rx-fifo-size = <1000>;
tx-fifo-size = <800>;
phy-mode = "rmii";
phy-map = <00000001>;
zmii-device = <&ZMII0>;
zmii-channel = <0>;
};
ii) McMAL node
Required properties:
- device_type : "dma-controller"
- compatible : compatible list, containing 2 entries, first is
"ibm,mcmal-CHIP" where CHIP is the host ASIC (like
emac) and the second is either "ibm,mcmal" or
"ibm,mcmal2".
For Axon, "ibm,mcmal-axon","ibm,mcmal2"
- interrupts : <interrupt mapping for the MAL interrupts sources:
5 sources: tx_eob, rx_eob, serr, txde, rxde>.
For Axon: This is _different_ from the current
firmware. We use the "delayed" interrupts for txeob
and rxeob. Thus we end up with mapping those 5 MPIC
interrupts, all level positive sensitive: 10, 11, 32,
33, 34 (in decimal)
- dcr-reg : < DCR registers range >
- dcr-parent : if needed for dcr-reg
- num-tx-chans : 1 cell, number of Tx channels
- num-rx-chans : 1 cell, number of Rx channels
iii) ZMII node
Required properties:
- compatible : compatible list, containing 2 entries, first is
"ibm,zmii-CHIP" where CHIP is the host ASIC (like
EMAC) and the second is "ibm,zmii".
For Axon, there is no ZMII node.
- reg : <registers mapping>
iv) RGMII node
Required properties:
- compatible : compatible list, containing 2 entries, first is
"ibm,rgmii-CHIP" where CHIP is the host ASIC (like
EMAC) and the second is "ibm,rgmii".
For Axon, "ibm,rgmii-axon","ibm,rgmii"
- reg : <registers mapping>
- revision : as provided by the RGMII new version register if
available.
For Axon: 0x0000012a

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Specifying GPIO information for devices
============================================
1) gpios property
-----------------
Nodes that makes use of GPIOs should define them using `gpios' property,
format of which is: <&gpio-controller1-phandle gpio1-specifier
&gpio-controller2-phandle gpio2-specifier
0 /* holes are permitted, means no GPIO 3 */
&gpio-controller4-phandle gpio4-specifier
...>;
Note that gpio-specifier length is controller dependent.
gpio-specifier may encode: bank, pin position inside the bank,
whether pin is open-drain and whether pin is logically inverted.
Example of the node using GPIOs:
node {
gpios = <&qe_pio_e 18 0>;
};
In this example gpio-specifier is "18 0" and encodes GPIO pin number,
and empty GPIO flags as accepted by the "qe_pio_e" gpio-controller.
2) gpio-controller nodes
------------------------
Every GPIO controller node must have #gpio-cells property defined,
this information will be used to translate gpio-specifiers.
Example of two SOC GPIO banks defined as gpio-controller nodes:
qe_pio_a: gpio-controller@1400 {
#gpio-cells = <2>;
compatible = "fsl,qe-pario-bank-a", "fsl,qe-pario-bank";
reg = <0x1400 0x18>;
gpio-controller;
};
qe_pio_e: gpio-controller@1460 {
#gpio-cells = <2>;
compatible = "fsl,qe-pario-bank-e", "fsl,qe-pario-bank";
reg = <0x1460 0x18>;
gpio-controller;
};

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@ -16,10 +16,17 @@ LED sub-node properties:
string defining the trigger assigned to the LED. Current triggers are:
"backlight" - LED will act as a back-light, controlled by the framebuffer
system
"default-on" - LED will turn on
"default-on" - LED will turn on, but see "default-state" below
"heartbeat" - LED "double" flashes at a load average based rate
"ide-disk" - LED indicates disk activity
"timer" - LED flashes at a fixed, configurable rate
- default-state: (optional) The initial state of the LED. Valid
values are "on", "off", and "keep". If the LED is already on or off
and the default-state property is set the to same value, then no
glitch should be produced where the LED momentarily turns off (or
on). The "keep" setting will keep the LED at whatever its current
state is, without producing a glitch. The default is off if this
property is not present.
Examples:
@ -30,14 +37,22 @@ leds {
gpios = <&mcu_pio 0 1>; /* Active low */
linux,default-trigger = "ide-disk";
};
fault {
gpios = <&mcu_pio 1 0>;
/* Keep LED on if BIOS detected hardware fault */
default-state = "keep";
};
};
run-control {
compatible = "gpio-leds";
red {
gpios = <&mpc8572 6 0>;
default-state = "off";
};
green {
gpios = <&mpc8572 7 0>;
default-state = "on";
};
}

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MDIO on GPIOs
Currently defined compatibles:
- virtual,gpio-mdio
MDC and MDIO lines connected to GPIO controllers are listed in the
gpios property as described in section VIII.1 in the following order:
MDC, MDIO.
Example:
mdio {
compatible = "virtual,mdio-gpio";
#address-cells = <1>;
#size-cells = <0>;
gpios = <&qe_pio_a 11
&qe_pio_c 6>;
};

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Marvell Discovery mv64[345]6x System Controller chips
===========================================================
The Marvell mv64[345]60 series of system controller chips contain
many of the peripherals needed to implement a complete computer
system. In this section, we define device tree nodes to describe
the system controller chip itself and each of the peripherals
which it contains. Compatible string values for each node are
prefixed with the string "marvell,", for Marvell Technology Group Ltd.
1) The /system-controller node
This node is used to represent the system-controller and must be
present when the system uses a system controller chip. The top-level
system-controller node contains information that is global to all
devices within the system controller chip. The node name begins
with "system-controller" followed by the unit address, which is
the base address of the memory-mapped register set for the system
controller chip.
Required properties:
- ranges : Describes the translation of system controller addresses
for memory mapped registers.
- clock-frequency: Contains the main clock frequency for the system
controller chip.
- reg : This property defines the address and size of the
memory-mapped registers contained within the system controller
chip. The address specified in the "reg" property should match
the unit address of the system-controller node.
- #address-cells : Address representation for system controller
devices. This field represents the number of cells needed to
represent the address of the memory-mapped registers of devices
within the system controller chip.
- #size-cells : Size representation for for the memory-mapped
registers within the system controller chip.
- #interrupt-cells : Defines the width of cells used to represent
interrupts.
Optional properties:
- model : The specific model of the system controller chip. Such
as, "mv64360", "mv64460", or "mv64560".
- compatible : A string identifying the compatibility identifiers
of the system controller chip.
The system-controller node contains child nodes for each system
controller device that the platform uses. Nodes should not be created
for devices which exist on the system controller chip but are not used
Example Marvell Discovery mv64360 system-controller node:
system-controller@f1000000 { /* Marvell Discovery mv64360 */
#address-cells = <1>;
#size-cells = <1>;
model = "mv64360"; /* Default */
compatible = "marvell,mv64360";
clock-frequency = <133333333>;
reg = <0xf1000000 0x10000>;
virtual-reg = <0xf1000000>;
ranges = <0x88000000 0x88000000 0x1000000 /* PCI 0 I/O Space */
0x80000000 0x80000000 0x8000000 /* PCI 0 MEM Space */
0xa0000000 0xa0000000 0x4000000 /* User FLASH */
0x00000000 0xf1000000 0x0010000 /* Bridge's regs */
0xf2000000 0xf2000000 0x0040000>;/* Integrated SRAM */
[ child node definitions... ]
}
2) Child nodes of /system-controller
a) Marvell Discovery MDIO bus
The MDIO is a bus to which the PHY devices are connected. For each
device that exists on this bus, a child node should be created. See
the definition of the PHY node below for an example of how to define
a PHY.
Required properties:
- #address-cells : Should be <1>
- #size-cells : Should be <0>
- device_type : Should be "mdio"
- compatible : Should be "marvell,mv64360-mdio"
Example:
mdio {
#address-cells = <1>;
#size-cells = <0>;
device_type = "mdio";
compatible = "marvell,mv64360-mdio";
ethernet-phy@0 {
......
};
};
b) Marvell Discovery ethernet controller
The Discover ethernet controller is described with two levels
of nodes. The first level describes an ethernet silicon block
and the second level describes up to 3 ethernet nodes within
that block. The reason for the multiple levels is that the
registers for the node are interleaved within a single set
of registers. The "ethernet-block" level describes the
shared register set, and the "ethernet" nodes describe ethernet
port-specific properties.
Ethernet block node
Required properties:
- #address-cells : <1>
- #size-cells : <0>
- compatible : "marvell,mv64360-eth-block"
- reg : Offset and length of the register set for this block
Example Discovery Ethernet block node:
ethernet-block@2000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "marvell,mv64360-eth-block";
reg = <0x2000 0x2000>;
ethernet@0 {
.......
};
};
Ethernet port node
Required properties:
- device_type : Should be "network".
- compatible : Should be "marvell,mv64360-eth".
- reg : Should be <0>, <1>, or <2>, according to which registers
within the silicon block the device uses.
- interrupts : <a> where a is the interrupt number for the port.
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
- phy : the phandle for the PHY connected to this ethernet
controller.
- local-mac-address : 6 bytes, MAC address
Example Discovery Ethernet port node:
ethernet@0 {
device_type = "network";
compatible = "marvell,mv64360-eth";
reg = <0>;
interrupts = <32>;
interrupt-parent = <&PIC>;
phy = <&PHY0>;
local-mac-address = [ 00 00 00 00 00 00 ];
};
c) Marvell Discovery PHY nodes
Required properties:
- device_type : Should be "ethernet-phy"
- interrupts : <a> where a is the interrupt number for this phy.
- interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device.
- reg : The ID number for the phy, usually a small integer
Example Discovery PHY node:
ethernet-phy@1 {
device_type = "ethernet-phy";
compatible = "broadcom,bcm5421";
interrupts = <76>; /* GPP 12 */
interrupt-parent = <&PIC>;
reg = <1>;
};
d) Marvell Discovery SDMA nodes
Represent DMA hardware associated with the MPSC (multiprotocol
serial controllers).
Required properties:
- compatible : "marvell,mv64360-sdma"
- reg : Offset and length of the register set for this device
- interrupts : <a> where a is the interrupt number for the DMA
device.
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
Example Discovery SDMA node:
sdma@4000 {
compatible = "marvell,mv64360-sdma";
reg = <0x4000 0xc18>;
virtual-reg = <0xf1004000>;
interrupts = <36>;
interrupt-parent = <&PIC>;
};
e) Marvell Discovery BRG nodes
Represent baud rate generator hardware associated with the MPSC
(multiprotocol serial controllers).
Required properties:
- compatible : "marvell,mv64360-brg"
- reg : Offset and length of the register set for this device
- clock-src : A value from 0 to 15 which selects the clock
source for the baud rate generator. This value corresponds
to the CLKS value in the BRGx configuration register. See
the mv64x60 User's Manual.
- clock-frequence : The frequency (in Hz) of the baud rate
generator's input clock.
- current-speed : The current speed setting (presumably by
firmware) of the baud rate generator.
Example Discovery BRG node:
brg@b200 {
compatible = "marvell,mv64360-brg";
reg = <0xb200 0x8>;
clock-src = <8>;
clock-frequency = <133333333>;
current-speed = <9600>;
};
f) Marvell Discovery CUNIT nodes
Represent the Serial Communications Unit device hardware.
Required properties:
- reg : Offset and length of the register set for this device
Example Discovery CUNIT node:
cunit@f200 {
reg = <0xf200 0x200>;
};
g) Marvell Discovery MPSCROUTING nodes
Represent the Discovery's MPSC routing hardware
Required properties:
- reg : Offset and length of the register set for this device
Example Discovery CUNIT node:
mpscrouting@b500 {
reg = <0xb400 0xc>;
};
h) Marvell Discovery MPSCINTR nodes
Represent the Discovery's MPSC DMA interrupt hardware registers
(SDMA cause and mask registers).
Required properties:
- reg : Offset and length of the register set for this device
Example Discovery MPSCINTR node:
mpsintr@b800 {
reg = <0xb800 0x100>;
};
i) Marvell Discovery MPSC nodes
Represent the Discovery's MPSC (Multiprotocol Serial Controller)
serial port.
Required properties:
- device_type : "serial"
- compatible : "marvell,mv64360-mpsc"
- reg : Offset and length of the register set for this device
- sdma : the phandle for the SDMA node used by this port
- brg : the phandle for the BRG node used by this port
- cunit : the phandle for the CUNIT node used by this port
- mpscrouting : the phandle for the MPSCROUTING node used by this port
- mpscintr : the phandle for the MPSCINTR node used by this port
- cell-index : the hardware index of this cell in the MPSC core
- max_idle : value needed for MPSC CHR3 (Maximum Frame Length)
register
- interrupts : <a> where a is the interrupt number for the MPSC.
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
Example Discovery MPSCINTR node:
mpsc@8000 {
device_type = "serial";
compatible = "marvell,mv64360-mpsc";
reg = <0x8000 0x38>;
virtual-reg = <0xf1008000>;
sdma = <&SDMA0>;
brg = <&BRG0>;
cunit = <&CUNIT>;
mpscrouting = <&MPSCROUTING>;
mpscintr = <&MPSCINTR>;
cell-index = <0>;
max_idle = <40>;
interrupts = <40>;
interrupt-parent = <&PIC>;
};
j) Marvell Discovery Watch Dog Timer nodes
Represent the Discovery's watchdog timer hardware
Required properties:
- compatible : "marvell,mv64360-wdt"
- reg : Offset and length of the register set for this device
Example Discovery Watch Dog Timer node:
wdt@b410 {
compatible = "marvell,mv64360-wdt";
reg = <0xb410 0x8>;
};
k) Marvell Discovery I2C nodes
Represent the Discovery's I2C hardware
Required properties:
- device_type : "i2c"
- compatible : "marvell,mv64360-i2c"
- reg : Offset and length of the register set for this device
- interrupts : <a> where a is the interrupt number for the I2C.
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
Example Discovery I2C node:
compatible = "marvell,mv64360-i2c";
reg = <0xc000 0x20>;
virtual-reg = <0xf100c000>;
interrupts = <37>;
interrupt-parent = <&PIC>;
};
l) Marvell Discovery PIC (Programmable Interrupt Controller) nodes
Represent the Discovery's PIC hardware
Required properties:
- #interrupt-cells : <1>
- #address-cells : <0>
- compatible : "marvell,mv64360-pic"
- reg : Offset and length of the register set for this device
- interrupt-controller
Example Discovery PIC node:
pic {
#interrupt-cells = <1>;
#address-cells = <0>;
compatible = "marvell,mv64360-pic";
reg = <0x0 0x88>;
interrupt-controller;
};
m) Marvell Discovery MPP (Multipurpose Pins) multiplexing nodes
Represent the Discovery's MPP hardware
Required properties:
- compatible : "marvell,mv64360-mpp"
- reg : Offset and length of the register set for this device
Example Discovery MPP node:
mpp@f000 {
compatible = "marvell,mv64360-mpp";
reg = <0xf000 0x10>;
};
n) Marvell Discovery GPP (General Purpose Pins) nodes
Represent the Discovery's GPP hardware
Required properties:
- compatible : "marvell,mv64360-gpp"
- reg : Offset and length of the register set for this device
Example Discovery GPP node:
gpp@f000 {
compatible = "marvell,mv64360-gpp";
reg = <0xf100 0x20>;
};
o) Marvell Discovery PCI host bridge node
Represents the Discovery's PCI host bridge device. The properties
for this node conform to Rev 2.1 of the PCI Bus Binding to IEEE
1275-1994. A typical value for the compatible property is
"marvell,mv64360-pci".
Example Discovery PCI host bridge node
pci@80000000 {
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
device_type = "pci";
compatible = "marvell,mv64360-pci";
reg = <0xcf8 0x8>;
ranges = <0x01000000 0x0 0x0
0x88000000 0x0 0x01000000
0x02000000 0x0 0x80000000
0x80000000 0x0 0x08000000>;
bus-range = <0 255>;
clock-frequency = <66000000>;
interrupt-parent = <&PIC>;
interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
interrupt-map = <
/* IDSEL 0x0a */
0x5000 0 0 1 &PIC 80
0x5000 0 0 2 &PIC 81
0x5000 0 0 3 &PIC 91
0x5000 0 0 4 &PIC 93
/* IDSEL 0x0b */
0x5800 0 0 1 &PIC 91
0x5800 0 0 2 &PIC 93
0x5800 0 0 3 &PIC 80
0x5800 0 0 4 &PIC 81
/* IDSEL 0x0c */
0x6000 0 0 1 &PIC 91
0x6000 0 0 2 &PIC 93
0x6000 0 0 3 &PIC 80
0x6000 0 0 4 &PIC 81
/* IDSEL 0x0d */
0x6800 0 0 1 &PIC 93
0x6800 0 0 2 &PIC 80
0x6800 0 0 3 &PIC 81
0x6800 0 0 4 &PIC 91
>;
};
p) Marvell Discovery CPU Error nodes
Represent the Discovery's CPU error handler device.
Required properties:
- compatible : "marvell,mv64360-cpu-error"
- reg : Offset and length of the register set for this device
- interrupts : the interrupt number for this device
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
Example Discovery CPU Error node:
cpu-error@0070 {
compatible = "marvell,mv64360-cpu-error";
reg = <0x70 0x10 0x128 0x28>;
interrupts = <3>;
interrupt-parent = <&PIC>;
};
q) Marvell Discovery SRAM Controller nodes
Represent the Discovery's SRAM controller device.
Required properties:
- compatible : "marvell,mv64360-sram-ctrl"
- reg : Offset and length of the register set for this device
- interrupts : the interrupt number for this device
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
Example Discovery SRAM Controller node:
sram-ctrl@0380 {
compatible = "marvell,mv64360-sram-ctrl";
reg = <0x380 0x80>;
interrupts = <13>;
interrupt-parent = <&PIC>;
};
r) Marvell Discovery PCI Error Handler nodes
Represent the Discovery's PCI error handler device.
Required properties:
- compatible : "marvell,mv64360-pci-error"
- reg : Offset and length of the register set for this device
- interrupts : the interrupt number for this device
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
Example Discovery PCI Error Handler node:
pci-error@1d40 {
compatible = "marvell,mv64360-pci-error";
reg = <0x1d40 0x40 0xc28 0x4>;
interrupts = <12>;
interrupt-parent = <&PIC>;
};
s) Marvell Discovery Memory Controller nodes
Represent the Discovery's memory controller device.
Required properties:
- compatible : "marvell,mv64360-mem-ctrl"
- reg : Offset and length of the register set for this device
- interrupts : the interrupt number for this device
- interrupt-parent : the phandle for the interrupt controller
that services interrupts for this device.
Example Discovery Memory Controller node:
mem-ctrl@1400 {
compatible = "marvell,mv64360-mem-ctrl";
reg = <0x1400 0x60>;
interrupts = <17>;
interrupt-parent = <&PIC>;
};

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PHY nodes
Required properties:
- device_type : Should be "ethernet-phy"
- interrupts : <a b> where a is the interrupt number and b is a
field that represents an encoding of the sense and level
information for the interrupt. This should be encoded based on
the information in section 2) depending on the type of interrupt
controller you have.
- interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device.
- reg : The ID number for the phy, usually a small integer
- linux,phandle : phandle for this node; likely referenced by an
ethernet controller node.
Example:
ethernet-phy@0 {
linux,phandle = <2452000>
interrupt-parent = <40000>;
interrupts = <35 1>;
reg = <0>;
device_type = "ethernet-phy";
};

57
Documentation/powerpc/dts-bindings/spi-bus.txt Normal file
View File

@ -0,0 +1,57 @@
SPI (Serial Peripheral Interface) busses
SPI busses can be described with a node for the SPI master device
and a set of child nodes for each SPI slave on the bus. For this
discussion, it is assumed that the system's SPI controller is in
SPI master mode. This binding does not describe SPI controllers
in slave mode.
The SPI master node requires the following properties:
- #address-cells - number of cells required to define a chip select
address on the SPI bus.
- #size-cells - should be zero.
- compatible - name of SPI bus controller following generic names
recommended practice.
No other properties are required in the SPI bus node. It is assumed
that a driver for an SPI bus device will understand that it is an SPI bus.
However, the binding does not attempt to define the specific method for
assigning chip select numbers. Since SPI chip select configuration is
flexible and non-standardized, it is left out of this binding with the
assumption that board specific platform code will be used to manage
chip selects. Individual drivers can define additional properties to
support describing the chip select layout.
SPI slave nodes must be children of the SPI master node and can
contain the following properties.
- reg - (required) chip select address of device.
- compatible - (required) name of SPI device following generic names
recommended practice
- spi-max-frequency - (required) Maximum SPI clocking speed of device in Hz
- spi-cpol - (optional) Empty property indicating device requires
inverse clock polarity (CPOL) mode
- spi-cpha - (optional) Empty property indicating device requires
shifted clock phase (CPHA) mode
- spi-cs-high - (optional) Empty property indicating device requires
chip select active high
SPI example for an MPC5200 SPI bus:
spi@f00 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,mpc5200b-spi","fsl,mpc5200-spi";
reg = <0xf00 0x20>;
interrupts = <2 13 0 2 14 0>;
interrupt-parent = <&mpc5200_pic>;
ethernet-switch@0 {
compatible = "micrel,ks8995m";
spi-max-frequency = <1000000>;
reg = <0>;
};
codec@1 {
compatible = "ti,tlv320aic26";
spi-max-frequency = <100000>;
reg = <1>;
};
};

25
Documentation/powerpc/dts-bindings/usb-ehci.txt Normal file
View File

@ -0,0 +1,25 @@
USB EHCI controllers
Required properties:
- compatible : should be "usb-ehci".
- reg : should contain at least address and length of the standard EHCI
register set for the device. Optional platform-dependent registers
(debug-port or other) can be also specified here, but only after
definition of standard EHCI registers.
- interrupts : one EHCI interrupt should be described here.
If device registers are implemented in big endian mode, the device
node should have "big-endian-regs" property.
If controller implementation operates with big endian descriptors,
"big-endian-desc" property should be specified.
If both big endian registers and descriptors are used by the controller
implementation, "big-endian" property can be specified instead of having
both "big-endian-regs" and "big-endian-desc".
Example (Sequoia 440EPx):
ehci@e0000300 {
compatible = "ibm,usb-ehci-440epx", "usb-ehci";
interrupt-parent = <&UIC0>;
interrupts = <1a 4>;
reg = <0 e0000300 90 0 e0000390 70>;
big-endian;
};

295
Documentation/powerpc/dts-bindings/xilinx.txt Normal file
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@ -0,0 +1,295 @@
d) Xilinx IP cores
The Xilinx EDK toolchain ships with a set of IP cores (devices) for use
in Xilinx Spartan and Virtex FPGAs. The devices cover the whole range
of standard device types (network, serial, etc.) and miscellaneous
devices (gpio, LCD, spi, etc). Also, since these devices are
implemented within the fpga fabric every instance of the device can be
synthesised with different options that change the behaviour.
Each IP-core has a set of parameters which the FPGA designer can use to
control how the core is synthesized. Historically, the EDK tool would
extract the device parameters relevant to device drivers and copy them
into an 'xparameters.h' in the form of #define symbols. This tells the
device drivers how the IP cores are configured, but it requres the kernel
to be recompiled every time the FPGA bitstream is resynthesized.
The new approach is to export the parameters into the device tree and
generate a new device tree each time the FPGA bitstream changes. The
parameters which used to be exported as #defines will now become
properties of the device node. In general, device nodes for IP-cores
will take the following form:
(name): (generic-name)@(base-address) {
compatible = "xlnx,(ip-core-name)-(HW_VER)"
[, (list of compatible devices), ...];
reg = <(baseaddr) (size)>;
interrupt-parent = <&interrupt-controller-phandle>;
interrupts = < ... >;
xlnx,(parameter1) = "(string-value)";
xlnx,(parameter2) = <(int-value)>;
};
(generic-name): an open firmware-style name that describes the
generic class of device. Preferably, this is one word, such
as 'serial' or 'ethernet'.
(ip-core-name): the name of the ip block (given after the BEGIN
directive in system.mhs). Should be in lowercase
and all underscores '_' converted to dashes '-'.
(name): is derived from the "PARAMETER INSTANCE" value.
(parameter#): C_* parameters from system.mhs. The C_ prefix is
dropped from the parameter name, the name is converted
to lowercase and all underscore '_' characters are
converted to dashes '-'.
(baseaddr): the baseaddr parameter value (often named C_BASEADDR).
(HW_VER): from the HW_VER parameter.
(size): the address range size (often C_HIGHADDR - C_BASEADDR + 1).
Typically, the compatible list will include the exact IP core version
followed by an older IP core version which implements the same
interface or any other device with the same interface.
'reg', 'interrupt-parent' and 'interrupts' are all optional properties.
For example, the following block from system.mhs:
BEGIN opb_uartlite
PARAMETER INSTANCE = opb_uartlite_0
PARAMETER HW_VER = 1.00.b
PARAMETER C_BAUDRATE = 115200
PARAMETER C_DATA_BITS = 8
PARAMETER C_ODD_PARITY = 0
PARAMETER C_USE_PARITY = 0
PARAMETER C_CLK_FREQ = 50000000
PARAMETER C_BASEADDR = 0xEC100000
PARAMETER C_HIGHADDR = 0xEC10FFFF
BUS_INTERFACE SOPB = opb_7
PORT OPB_Clk = CLK_50MHz
PORT Interrupt = opb_uartlite_0_Interrupt
PORT RX = opb_uartlite_0_RX
PORT TX = opb_uartlite_0_TX
PORT OPB_Rst = sys_bus_reset_0
END
becomes the following device tree node:
opb_uartlite_0: serial@ec100000 {
device_type = "serial";
compatible = "xlnx,opb-uartlite-1.00.b";
reg = <ec100000 10000>;
interrupt-parent = <&opb_intc_0>;
interrupts = <1 0>; // got this from the opb_intc parameters
current-speed = <d#115200>; // standard serial device prop
clock-frequency = <d#50000000>; // standard serial device prop
xlnx,data-bits = <8>;
xlnx,odd-parity = <0>;
xlnx,use-parity = <0>;
};
Some IP cores actually implement 2 or more logical devices. In
this case, the device should still describe the whole IP core with
a single node and add a child node for each logical device. The
ranges property can be used to translate from parent IP-core to the
registers of each device. In addition, the parent node should be
compatible with the bus type 'xlnx,compound', and should contain
#address-cells and #size-cells, as with any other bus. (Note: this
makes the assumption that both logical devices have the same bus
binding. If this is not true, then separate nodes should be used
for each logical device). The 'cell-index' property can be used to
enumerate logical devices within an IP core. For example, the
following is the system.mhs entry for the dual ps2 controller found
on the ml403 reference design.
BEGIN opb_ps2_dual_ref
PARAMETER INSTANCE = opb_ps2_dual_ref_0
PARAMETER HW_VER = 1.00.a
PARAMETER C_BASEADDR = 0xA9000000
PARAMETER C_HIGHADDR = 0xA9001FFF
BUS_INTERFACE SOPB = opb_v20_0
PORT Sys_Intr1 = ps2_1_intr
PORT Sys_Intr2 = ps2_2_intr
PORT Clkin1 = ps2_clk_rx_1
PORT Clkin2 = ps2_clk_rx_2
PORT Clkpd1 = ps2_clk_tx_1
PORT Clkpd2 = ps2_clk_tx_2
PORT Rx1 = ps2_d_rx_1
PORT Rx2 = ps2_d_rx_2
PORT Txpd1 = ps2_d_tx_1
PORT Txpd2 = ps2_d_tx_2
END
It would result in the following device tree nodes:
opb_ps2_dual_ref_0: opb-ps2-dual-ref@a9000000 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "xlnx,compound";
ranges = <0 a9000000 2000>;
// If this device had extra parameters, then they would
// go here.
ps2@0 {
compatible = "xlnx,opb-ps2-dual-ref-1.00.a";
reg = <0 40>;
interrupt-parent = <&opb_intc_0>;
interrupts = <3 0>;
cell-index = <0>;
};
ps2@1000 {
compatible = "xlnx,opb-ps2-dual-ref-1.00.a";
reg = <1000 40>;
interrupt-parent = <&opb_intc_0>;
interrupts = <3 0>;
cell-index = <0>;
};
};
Also, the system.mhs file defines bus attachments from the processor
to the devices. The device tree structure should reflect the bus
attachments. Again an example; this system.mhs fragment:
BEGIN ppc405_virtex4
PARAMETER INSTANCE = ppc405_0
PARAMETER HW_VER = 1.01.a
BUS_INTERFACE DPLB = plb_v34_0
BUS_INTERFACE IPLB = plb_v34_0
END
BEGIN opb_intc
PARAMETER INSTANCE = opb_intc_0
PARAMETER HW_VER = 1.00.c
PARAMETER C_BASEADDR = 0xD1000FC0
PARAMETER C_HIGHADDR = 0xD1000FDF
BUS_INTERFACE SOPB = opb_v20_0
END
BEGIN opb_uart16550
PARAMETER INSTANCE = opb_uart16550_0
PARAMETER HW_VER = 1.00.d
PARAMETER C_BASEADDR = 0xa0000000
PARAMETER C_HIGHADDR = 0xa0001FFF
BUS_INTERFACE SOPB = opb_v20_0
END
BEGIN plb_v34
PARAMETER INSTANCE = plb_v34_0
PARAMETER HW_VER = 1.02.a
END
BEGIN plb_bram_if_cntlr
PARAMETER INSTANCE = plb_bram_if_cntlr_0
PARAMETER HW_VER = 1.00.b
PARAMETER C_BASEADDR = 0xFFFF0000
PARAMETER C_HIGHADDR = 0xFFFFFFFF
BUS_INTERFACE SPLB = plb_v34_0
END
BEGIN plb2opb_bridge
PARAMETER INSTANCE = plb2opb_bridge_0
PARAMETER HW_VER = 1.01.a
PARAMETER C_RNG0_BASEADDR = 0x20000000
PARAMETER C_RNG0_HIGHADDR = 0x3FFFFFFF
PARAMETER C_RNG1_BASEADDR = 0x60000000
PARAMETER C_RNG1_HIGHADDR = 0x7FFFFFFF
PARAMETER C_RNG2_BASEADDR = 0x80000000
PARAMETER C_RNG2_HIGHADDR = 0xBFFFFFFF
PARAMETER C_RNG3_BASEADDR = 0xC0000000
PARAMETER C_RNG3_HIGHADDR = 0xDFFFFFFF
BUS_INTERFACE SPLB = plb_v34_0
BUS_INTERFACE MOPB = opb_v20_0
END
Gives this device tree (some properties removed for clarity):
plb@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "xlnx,plb-v34-1.02.a";
device_type = "ibm,plb";
ranges; // 1:1 translation
plb_bram_if_cntrl_0: bram@ffff0000 {
reg = <ffff0000 10000>;
}
opb@20000000 {
#address-cells = <1>;
#size-cells = <1>;
ranges = <20000000 20000000 20000000
60000000 60000000 20000000
80000000 80000000 40000000
c0000000 c0000000 20000000>;
opb_uart16550_0: serial@a0000000 {
reg = <a00000000 2000>;
};
opb_intc_0: interrupt-controller@d1000fc0 {
reg = <d1000fc0 20>;
};
};
};
That covers the general approach to binding xilinx IP cores into the
device tree. The following are bindings for specific devices:
i) Xilinx ML300 Framebuffer
Simple framebuffer device from the ML300 reference design (also on the
ML403 reference design as well as others).
Optional properties:
- resolution = <xres yres> : pixel resolution of framebuffer. Some
implementations use a different resolution.
Default is <d#640 d#480>
- virt-resolution = <xvirt yvirt> : Size of framebuffer in memory.
Default is <d#1024 d#480>.
- rotate-display (empty) : rotate display 180 degrees.
ii) Xilinx SystemACE
The Xilinx SystemACE device is used to program FPGAs from an FPGA
bitstream stored on a CF card. It can also be used as a generic CF
interface device.
Optional properties:
- 8-bit (empty) : Set this property for SystemACE in 8 bit mode
iii) Xilinx EMAC and Xilinx TEMAC
Xilinx Ethernet devices. In addition to general xilinx properties
listed above, nodes for these devices should include a phy-handle
property, and may include other common network device properties
like local-mac-address.
iv) Xilinx Uartlite
Xilinx uartlite devices are simple fixed speed serial ports.
Required properties:
- current-speed : Baud rate of uartlite
v) Xilinx hwicap
Xilinx hwicap devices provide access to the configuration logic
of the FPGA through the Internal Configuration Access Port
(ICAP). The ICAP enables partial reconfiguration of the FPGA,
readback of the configuration information, and some control over
'warm boots' of the FPGA fabric.
Required properties:
- xlnx,family : The family of the FPGA, necessary since the
capabilities of the underlying ICAP hardware
differ between different families. May be
'virtex2p', 'virtex4', or 'virtex5'.
vi) Xilinx Uart 16550
Xilinx UART 16550 devices are very similar to the NS16550 but with
different register spacing and an offset from the base address.
Required properties:
- clock-frequency : Frequency of the clock input
- reg-offset : A value of 3 is required
- reg-shift : A value of 2 is required

13
Documentation/scheduler/sched-rt-group.txt
View File

@ -73,7 +73,7 @@ The remaining CPU time will be used for user input and other tasks. Because
realtime tasks have explicitly allocated the CPU time they need to perform
their tasks, buffer underruns in the graphics or audio can be eliminated.
NOTE: the above example is not fully implemented as of yet (2.6.25). We still
NOTE: the above example is not fully implemented yet. We still
lack an EDF scheduler to make non-uniform periods usable.
@ -140,14 +140,15 @@ The other option is:
.o CONFIG_CGROUP_SCHED (aka "Basis for grouping tasks" = "Control groups")
This uses the /cgroup virtual file system and "/cgroup/<cgroup>/cpu.rt_runtime_us"
to control the CPU time reserved for each control group instead.
This uses the /cgroup virtual file system and
"/cgroup/<cgroup>/cpu.rt_runtime_us" to control the CPU time reserved for each
control group instead.
For more information on working with control groups, you should read
Documentation/cgroups/cgroups.txt as well.
Group settings are checked against the following limits in order to keep the configuration
schedulable:
Group settings are checked against the following limits in order to keep the
configuration schedulable:
\Sum_{i} runtime_{i} / global_period <= global_runtime / global_period
@ -189,7 +190,7 @@ Implementing SCHED_EDF might take a while to complete. Priority Inheritance is
the biggest challenge as the current linux PI infrastructure is geared towards
the limited static priority levels 0-99. With deadline scheduling you need to
do deadline inheritance (since priority is inversely proportional to the
deadline delta (deadline - now).
deadline delta (deadline - now)).
This means the whole PI machinery will have to be reworked - and that is one of
the most complex pieces of code we have.

1
Documentation/sound/alsa/HD-Audio-Models.txt
View File

@ -240,6 +240,7 @@ AD1986A
laptop-automute 2-channel with EAPD and HP-automute (Lenovo N100)
ultra 2-channel with EAPD (Samsung Ultra tablet PC)
samsung 2-channel with EAPD (Samsung R65)
samsung-p50 2-channel with HP-automute (Samsung P50)
AD1988/AD1988B/AD1989A/AD1989B
==============================

10
Documentation/spi/spidev_test.c
View File

@ -99,11 +99,13 @@ void parse_opts(int argc, char *argv[])
{ "lsb", 0, 0, 'L' },
{ "cs-high", 0, 0, 'C' },
{ "3wire", 0, 0, '3' },
{ "no-cs", 0, 0, 'N' },
{ "ready", 0, 0, 'R' },
{ NULL, 0, 0, 0 },
};
int c;
c = getopt_long(argc, argv, "D:s:d:b:lHOLC3", lopts, NULL);
c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR", lopts, NULL);
if (c == -1)
break;
@ -139,6 +141,12 @@ void parse_opts(int argc, char *argv[])
case '3':
mode |= SPI_3WIRE;
break;
case 'N':
mode |= SPI_NO_CS;
break;
case 'R':
mode |= SPI_READY;
break;
default:
print_usage(argv[0]);
break;

1
Documentation/video4linux/CARDLIST.em28xx
View File

@ -66,3 +66,4 @@
68 -> Terratec AV350 (em2860) [0ccd:0084]
69 -> KWorld ATSC 315U HDTV TV Box (em2882) [eb1a:a313]
70 -> Evga inDtube (em2882)
71 -> Silvercrest Webcam 1.3mpix (em2820/em2840)

2
Documentation/x86/00-INDEX
View File

@ -2,3 +2,5 @@
- this file
mtrr.txt
- how to use x86 Memory Type Range Registers to increase performance
exception-tables.txt
- why and how Linux kernel uses exception tables on x86

202
Documentation/exception.txt → Documentation/x86/exception-tables.txt
View File

@ -1,123 +1,123 @@
Kernel level exception handling in Linux 2.1.8
Kernel level exception handling in Linux
Commentary by Joerg Pommnitz <joerg@raleigh.ibm.com>
When a process runs in kernel mode, it often has to access user
mode memory whose address has been passed by an untrusted program.
When a process runs in kernel mode, it often has to access user
mode memory whose address has been passed by an untrusted program.
To protect itself the kernel has to verify this address.
In older versions of Linux this was done with the
int verify_area(int type, const void * addr, unsigned long size)
In older versions of Linux this was done with the
int verify_area(int type, const void * addr, unsigned long size)
function (which has since been replaced by access_ok()).
This function verified that the memory area starting at address
This function verified that the memory area starting at address
'addr' and of size 'size' was accessible for the operation specified
in type (read or write). To do this, verify_read had to look up the
virtual memory area (vma) that contained the address addr. In the
normal case (correctly working program), this test was successful.
in type (read or write). To do this, verify_read had to look up the
virtual memory area (vma) that contained the address addr. In the
normal case (correctly working program), this test was successful.
It only failed for a few buggy programs. In some kernel profiling
tests, this normally unneeded verification used up a considerable
amount of time.
To overcome this situation, Linus decided to let the virtual memory
To overcome this situation, Linus decided to let the virtual memory
hardware present in every Linux-capable CPU handle this test.
How does this work?
Whenever the kernel tries to access an address that is currently not
accessible, the CPU generates a page fault exception and calls the
page fault handler
Whenever the kernel tries to access an address that is currently not
accessible, the CPU generates a page fault exception and calls the
page fault handler
void do_page_fault(struct pt_regs *regs, unsigned long error_code)
in arch/i386/mm/fault.c. The parameters on the stack are set up by
the low level assembly glue in arch/i386/kernel/entry.S. The parameter
regs is a pointer to the saved registers on the stack, error_code
in arch/x86/mm/fault.c. The parameters on the stack are set up by
the low level assembly glue in arch/x86/kernel/entry_32.S. The parameter
regs is a pointer to the saved registers on the stack, error_code
contains a reason code for the exception.
do_page_fault first obtains the unaccessible address from the CPU
control register CR2. If the address is within the virtual address
space of the process, the fault probably occurred, because the page
was not swapped in, write protected or something similar. However,
we are interested in the other case: the address is not valid, there
is no vma that contains this address. In this case, the kernel jumps
to the bad_area label.
do_page_fault first obtains the unaccessible address from the CPU
control register CR2. If the address is within the virtual address
space of the process, the fault probably occurred, because the page
was not swapped in, write protected or something similar. However,
we are interested in the other case: the address is not valid, there
is no vma that contains this address. In this case, the kernel jumps
to the bad_area label.
There it uses the address of the instruction that caused the exception
(i.e. regs->eip) to find an address where the execution can continue
(fixup). If this search is successful, the fault handler modifies the
return address (again regs->eip) and returns. The execution will
There it uses the address of the instruction that caused the exception
(i.e. regs->eip) to find an address where the execution can continue
(fixup). If this search is successful, the fault handler modifies the
return address (again regs->eip) and returns. The execution will
continue at the address in fixup.
Where does fixup point to?
Since we jump to the contents of fixup, fixup obviously points
to executable code. This code is hidden inside the user access macros.
I have picked the get_user macro defined in include/asm/uaccess.h as an
example. The definition is somewhat hard to follow, so let's peek at
Since we jump to the contents of fixup, fixup obviously points
to executable code. This code is hidden inside the user access macros.
I have picked the get_user macro defined in arch/x86/include/asm/uaccess.h
as an example. The definition is somewhat hard to follow, so let's peek at
the code generated by the preprocessor and the compiler. I selected
the get_user call in drivers/char/console.c for a detailed examination.
the get_user call in drivers/char/sysrq.c for a detailed examination.
The original code in console.c line 1405:
The original code in sysrq.c line 587:
get_user(c, buf);
The preprocessor output (edited to become somewhat readable):
(
{
long __gu_err = - 14 , __gu_val = 0;
const __typeof__(*( ( buf ) )) *__gu_addr = ((buf));
if (((((0 + current_set[0])->tss.segment) == 0x18 ) ||
(((sizeof(*(buf))) <= 0xC0000000UL) &&
((unsigned long)(__gu_addr ) <= 0xC0000000UL - (sizeof(*(buf)))))))
{
long __gu_err = - 14 , __gu_val = 0;
const __typeof__(*( ( buf ) )) *__gu_addr = ((buf));
if (((((0 + current_set[0])->tss.segment) == 0x18 ) ||
(((sizeof(*(buf))) <= 0xC0000000UL) &&
((unsigned long)(__gu_addr ) <= 0xC0000000UL - (sizeof(*(buf)))))))
do {
__gu_err = 0;
switch ((sizeof(*(buf)))) {
case 1:
__asm__ __volatile__(
"1: mov" "b" " %2,%" "b" "1\n"
"2:\n"
".section .fixup,\"ax\"\n"
"3: movl %3,%0\n"
" xor" "b" " %" "b" "1,%" "b" "1\n"
" jmp 2b\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b,3b\n"
".text" : "=r"(__gu_err), "=q" (__gu_val): "m"((*(struct __large_struct *)
( __gu_addr )) ), "i"(- 14 ), "0"( __gu_err )) ;
break;
case 2:
__gu_err = 0;
switch ((sizeof(*(buf)))) {
case 1:
__asm__ __volatile__(
"1: mov" "w" " %2,%" "w" "1\n"
"2:\n"
".section .fixup,\"ax\"\n"
"3: movl %3,%0\n"
" xor" "w" " %" "w" "1,%" "w" "1\n"
" jmp 2b\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b,3b\n"
"1: mov" "b" " %2,%" "b" "1\n"
"2:\n"
".section .fixup,\"ax\"\n"
"3: movl %3,%0\n"
" xor" "b" " %" "b" "1,%" "b" "1\n"
" jmp 2b\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b,3b\n"
".text" : "=r"(__gu_err), "=q" (__gu_val): "m"((*(struct __large_struct *)
( __gu_addr )) ), "i"(- 14 ), "0"( __gu_err )) ;
break;
case 2:
__asm__ __volatile__(
"1: mov" "w" " %2,%" "w" "1\n"
"2:\n"
".section .fixup,\"ax\"\n"
"3: movl %3,%0\n"
" xor" "w" " %" "w" "1,%" "w" "1\n"
" jmp 2b\n"
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 1b,3b\n"
".text" : "=r"(__gu_err), "=r" (__gu_val) : "m"((*(struct __large_struct *)
( __gu_addr )) ), "i"(- 14 ), "0"( __gu_err ));
break;
case 4:
__asm__ __volatile__(
"1: mov" "l" " %2,%" "" "1\n"
"2:\n"
".section .fixup,\"ax\"\n"
"3: movl %3,%0\n"
" xor" "l" " %" "" "1,%" "" "1\n"
" jmp 2b\n"
".section __ex_table,\"a\"\n"
" .align 4\n" " .long 1b,3b\n"
( __gu_addr )) ), "i"(- 14 ), "0"( __gu_err ));
break;
case 4:
__asm__ __volatile__(
"1: mov" "l" " %2,%" "" "1\n"
"2:\n"
".section .fixup,\"ax\"\n"
"3: movl %3,%0\n"
" xor" "l" " %" "" "1,%" "" "1\n"
" jmp 2b\n"
".section __ex_table,\"a\"\n"
" .align 4\n" " .long 1b,3b\n"
".text" : "=r"(__gu_err), "=r" (__gu_val) : "m"((*(struct __large_struct *)
( __gu_addr )) ), "i"(- 14 ), "0"(__gu_err));
break;
default:
(__gu_val) = __get_user_bad();
}
} while (0) ;
((c)) = (__typeof__(*((buf))))__gu_val;
( __gu_addr )) ), "i"(- 14 ), "0"(__gu_err));
break;
default:
(__gu_val) = __get_user_bad();
}
} while (0) ;
((c)) = (__typeof__(*((buf))))__gu_val;
__gu_err;
}
);
@ -127,12 +127,12 @@ see what code gcc generates:
> xorl %edx,%edx
> movl current_set,%eax
> cmpl $24,788(%eax)
> je .L1424
> cmpl $24,788(%eax)
> je .L1424
> cmpl $-1073741825,64(%esp)
> ja .L1423
> ja .L1423
> .L1424:
> movl %edx,%eax
> movl %edx,%eax
> movl 64(%esp),%ebx
> #APP
> 1: movb (%ebx),%dl /* this is the actual user access */
@ -149,17 +149,17 @@ see what code gcc generates:
> .L1423:
> movzbl %dl,%esi
The optimizer does a good job and gives us something we can actually
understand. Can we? The actual user access is quite obvious. Thanks
to the unified address space we can just access the address in user
The optimizer does a good job and gives us something we can actually
understand. Can we? The actual user access is quite obvious. Thanks
to the unified address space we can just access the address in user
memory. But what does the .section stuff do?????
To understand this we have to look at the final kernel:
> objdump --section-headers vmlinux
>
>
> vmlinux: file format elf32-i386
>
>
> Sections:
> Idx Name Size VMA LMA File off Algn
> 0 .text 00098f40 c0100000 c0100000 00001000 2**4
@ -198,18 +198,18 @@ final kernel executable:
The whole user memory access is reduced to 10 x86 machine instructions.
The instructions bracketed in the .section directives are no longer
in the normal execution path. They are located in a different section
in the normal execution path. They are located in a different section
of the executable file:
> objdump --disassemble --section=.fixup vmlinux
>
>
> c0199ff5 <.fixup+10b5> movl $0xfffffff2,%eax
> c0199ffa <.fixup+10ba> xorb %dl,%dl
> c0199ffc <.fixup+10bc> jmp c017e7a7 <do_con_write+e3>
And finally:
> objdump --full-contents --section=__ex_table vmlinux
>
>
> c01aa7c4 93c017c0 e09f19c0 97c017c0 99c017c0 ................
> c01aa7d4 f6c217c0 e99f19c0 a5e717c0 f59f19c0 ................
> c01aa7e4 080a18c0 01a019c0 0a0a18c0 04a019c0 ................
@ -235,8 +235,8 @@ sections in the ELF object file. So the instructions
ended up in the .fixup section of the object file and the addresses
.long 1b,3b
ended up in the __ex_table section of the object file. 1b and 3b
are local labels. The local label 1b (1b stands for next label 1
backward) is the address of the instruction that might fault, i.e.
are local labels. The local label 1b (1b stands for next label 1
backward) is the address of the instruction that might fault, i.e.
in our case the address of the label 1 is c017e7a5:
the original assembly code: > 1: movb (%ebx),%dl
and linked in vmlinux : > c017e7a5 <do_con_write+e1> movb (%ebx),%dl
@ -254,7 +254,7 @@ The assembly code
becomes the value pair
> c01aa7d4 c017c2f6 c0199fe9 c017e7a5 c0199ff5 ................
^this is ^this is
1b 3b
1b 3b
c017e7a5,c0199ff5 in the exception table of the kernel.
So, what actually happens if a fault from kernel mode with no suitable
@ -266,9 +266,9 @@ vma occurs?
3.) CPU calls do_page_fault
4.) do page fault calls search_exception_table (regs->eip == c017e7a5);
5.) search_exception_table looks up the address c017e7a5 in the
exception table (i.e. the contents of the ELF section __ex_table)
exception table (i.e. the contents of the ELF section __ex_table)
and returns the address of the associated fault handle code c0199ff5.
6.) do_page_fault modifies its own return address to point to the fault
6.) do_page_fault modifies its own return address to point to the fault
handle code and returns.
7.) execution continues in the fault handling code.
8.) 8a) EAX becomes -EFAULT (== -14)

100
MAINTAINERS
View File

@ -230,6 +230,13 @@ L: linux-acenic@sunsite.dk
S: Maintained
F: drivers/net/acenic*
ACER ASPIRE ONE TEMPERATURE AND FAN DRIVER
P: Peter Feuerer
M: peter@piie.net
W: http://piie.net/?section=acerhdf
S: Maintained
F: drivers/platform/x86/acerhdf.c
ACER WMI LAPTOP EXTRAS
P: Carlos Corbacho
M: carlos@strangeworlds.co.uk
@ -860,12 +867,22 @@ M: alex@shark-linux.de
W: http://www.shark-linux.de/shark.html
S: Maintained
ARM/SAMSUNG ARM ARCHITECTURES
P: Ben Dooks
M: ben-linux@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
F: arch/arm/plat-s3c/
F: arch/arm/plat-s3c24xx/
ARM/S3C2410 ARM ARCHITECTURE
P: Ben Dooks
M: ben-linux@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
F: arch/arm/mach-s3c2410/
ARM/S3C2440 ARM ARCHITECTURE
P: Ben Dooks
@ -873,6 +890,39 @@ M: ben-linux@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
F: arch/arm/mach-s3c2440/
ARM/S3C2442 ARM ARCHITECTURE
P: Ben Dooks
M: ben-linux@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
F: arch/arm/mach-s3c2442/
ARM/S3C2443 ARM ARCHITECTURE
P: Ben Dooks
M: ben-linux@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
F: arch/arm/mach-s3c2443/
ARM/S3C6400 ARM ARCHITECTURE
P: Ben Dooks
M: ben-linux@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
F: arch/arm/mach-s3c6400/
ARM/S3C6410 ARM ARCHITECTURE
P: Ben Dooks
M: ben-linux@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
F: arch/arm/mach-s3c6410/
ARM/TECHNOLOGIC SYSTEMS TS7250 MACHINE SUPPORT
P: Lennert Buytenhek
@ -913,8 +963,7 @@ M: corentincj@iksaif.net
P: Karol Kozimor
M: sziwan@users.sourceforge.net
L: acpi4asus-user@lists.sourceforge.net
W: http://sourceforge.net/projects/acpi4asus
W: http://xf.iksaif.net/acpi4asus
W: http://acpi4asus.sf.net
S: Maintained
F: arch/x86/kernel/acpi/boot.c
F: drivers/platform/x86/asus_acpi.c
@ -930,8 +979,7 @@ ASUS LAPTOP EXTRAS DRIVER
P: Corentin Chary
M: corentincj@iksaif.net
L: acpi4asus-user@lists.sourceforge.net
W: http://sourceforge.net/projects/acpi4asus
W: http://xf.iksaif.net/acpi4asus
W: http://acpi4asus.sf.net
S: Maintained
F: drivers/platform/x86/asus-laptop.c
@ -1636,7 +1684,7 @@ P: Mikael Starvik
M: starvik@axis.com
P: Jesper Nilsson
M: jesper.nilsson@axis.com
L: dev-etrax@axis.com
L: linux-cris-kernel@axis.com
W: http://developer.axis.com
S: Maintained
F: arch/cris/
@ -2082,9 +2130,9 @@ F: drivers/edac/i5400_edac.c
EDAC-I82975X
P: Ranganathan Desikan
M: rdesikan@jetzbroadband.com
M: ravi@jetztechnologies.com
P: Arvind R.
M: arvind@acarlab.com
M: arvind@jetztechnologies.com
L: bluesmoke-devel@lists.sourceforge.net (moderated for non-subscribers)
W: bluesmoke.sourceforge.net
S: Maintained
@ -2110,7 +2158,7 @@ EEEPC LAPTOP EXTRAS DRIVER
P: Corentin Chary
M: corentincj@iksaif.net
L: acpi4asus-user@lists.sourceforge.net
W: http://sourceforge.net/projects/acpi4asus
W: http://acpi4asus.sf.net
S: Maintained
F: drivers/platform/x86/eeepc-laptop.c
@ -2803,7 +2851,9 @@ S: Maintained
IA64 (Itanium) PLATFORM
P: Tony Luck
P: Fenghua Yu
M: tony.luck@intel.com
M: fenghua.yu@intel.com
L: linux-ia64@vger.kernel.org
W: http://www.ia64-linux.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6.git
@ -2881,7 +2931,7 @@ P: Dmitry Eremin-Solenikov
M: dbaryshkov@gmail.com
P: Sergey Lapin
M: slapin@ossfans.org
L: linux-zigbee-devel@lists.sourceforge.net
L: linux-zigbee-devel@lists.sourceforge.net (moderated for non-subscribers)
W: http://apps.sourceforge.net/trac/linux-zigbee
T: git git://git.kernel.org/pub/scm/linux/kernel/git/lowpan/lowpan.git
S: Maintained
@ -3237,11 +3287,11 @@ F: include/linux/ivtv*
JFS FILESYSTEM
P: Dave Kleikamp
M: shaggy@austin.ibm.com
M: shaggy@linux.vnet.ibm.com
L: jfs-discussion@lists.sourceforge.net
W: http://jfs.sourceforge.net/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6.git
S: Supported
S: Maintained
F: Documentation/filesystems/jfs.txt
F: fs/jfs/
@ -4357,7 +4407,7 @@ W: http://www.nongnu.org/orinoco/
S: Maintained
F: drivers/net/wireless/orinoco/
OSD LIBRARY
OSD LIBRARY and FILESYSTEM
P: Boaz Harrosh
M: bharrosh@panasas.com
P: Benny Halevy
@ -4366,6 +4416,9 @@ L: osd-dev@open-osd.org
W: http://open-osd.org
T: git git://git.open-osd.org/open-osd.git
S: Maintained
F: drivers/scsi/osd/
F: drivers/include/scsi/osd_*
F: fs/exofs/
P54 WIRELESS DRIVER
P: Michael Wu
@ -5528,8 +5581,8 @@ F: drivers/staging/
STARFIRE/DURALAN NETWORK DRIVER
P: Ion Badulescu
M: ionut@cs.columbia.edu
S: Maintained
M: ionut@badula.org
S: Odd Fixes
F: drivers/net/starfire*
STARMODE RADIO IP (STRIP) PROTOCOL DRIVER
@ -5663,6 +5716,13 @@ F: drivers/misc/tifm*
F: drivers/mmc/host/tifm_sd.c
F: include/linux/tifm.h
TI TWL4030 SERIES SOC CODEC DRIVER
P: Peter Ujfalusi
M: peter.ujfalusi@nokia.com
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Maintained
F: sound/soc/codecs/twl4030*
TIPC NETWORK LAYER
P: Per Liden
M: per.liden@ericsson.com
@ -5746,17 +5806,17 @@ P: Jiri Kosina
M: trivial@kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial.git
S: Maintained
F: drivers/char/tty_*
F: drivers/serial/serial_core.c
F: include/linux/serial_core.h
F: include/linux/serial.h
F: include/linux/tty.h
TTY LAYER
P: Alan Cox
M: alan@lxorguk.ukuu.org.uk
S: Maintained
T: stgit http://zeniv.linux.org.uk/~alan/ttydev/
F: drivers/char/tty_*
F: drivers/serial/serial_core.c
F: include/linux/serial_core.h
F: include/linux/serial.h
F: include/linux/tty.h
TULIP NETWORK DRIVERS
P: Grant Grundler
@ -5794,7 +5854,7 @@ UBI FILE SYSTEM (UBIFS)
P: Artem Bityutskiy
M: dedekind@infradead.org
P: Adrian Hunter
M: ext-adrian.hunter@nokia.com
M: adrian.hunter@nokia.com
L: linux-mtd@lists.infradead.org
T: git git://git.infradead.org/ubifs-2.6.git
W: http://www.linux-mtd.infradead.org/doc/ubifs.html

14
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 30
EXTRAVERSION =
SUBLEVEL = 31
EXTRAVERSION = -rc3
NAME = Man-Eating Seals of Antiquity
# *DOCUMENTATION*
@ -140,15 +140,13 @@ _all: modules
endif
srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
TOPDIR := $(srctree)
# FIXME - TOPDIR is obsolete, use srctree/objtree
objtree := $(CURDIR)
src := $(srctree)
obj := $(objtree)
VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
export srctree objtree VPATH TOPDIR
export srctree objtree VPATH
# SUBARCH tells the usermode build what the underlying arch is. That is set
@ -344,7 +342,9 @@ KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common \
-Werror-implicit-function-declaration
-Werror-implicit-function-declaration \
-Wno-format-security \
-fno-delete-null-pointer-checks
KBUILD_AFLAGS := -D__ASSEMBLY__
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
@ -566,7 +566,7 @@ KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
# disable invalid "can't wrap" optimizations for signed / pointers
KBUILD_CFLAGS += $(call cc-option,-fwrapv)
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
# revert to pre-gcc-4.4 behaviour of .eh_frame
KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)

6
arch/alpha/include/asm/percpu.h
View File

@ -30,7 +30,7 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
#ifndef MODULE
#define SHIFT_PERCPU_PTR(var, offset) RELOC_HIDE(&per_cpu_var(var), (offset))
#define PER_CPU_ATTRIBUTES
#define PER_CPU_DEF_ATTRIBUTES
#else
/*
* To calculate addresses of locally defined variables, GCC uses 32-bit
@ -49,7 +49,7 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
: "=&r"(__ptr), "=&r"(tmp_gp)); \
(typeof(&per_cpu_var(var)))(__ptr + (offset)); })
#define PER_CPU_ATTRIBUTES __used
#define PER_CPU_DEF_ATTRIBUTES __used
#endif /* MODULE */
@ -71,7 +71,7 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
#define __get_cpu_var(var) per_cpu_var(var)
#define __raw_get_cpu_var(var) per_cpu_var(var)
#define PER_CPU_ATTRIBUTES
#define PER_CPU_DEF_ATTRIBUTES
#endif /* SMP */

1
arch/alpha/include/asm/thread_info.h
View File

@ -37,6 +37,7 @@ struct thread_info {
.task = &tsk, \
.exec_domain = &default_exec_domain, \
.addr_limit = KERNEL_DS, \
.preempt_count = INIT_PREEMPT_COUNT, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \

1
arch/alpha/kernel/ptrace.c
View File

@ -8,7 +8,6 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>

8
arch/arm/Kconfig.debug
View File

@ -99,14 +99,6 @@ config DEBUG_CLPS711X_UART2
output to the second serial port on these devices. Saying N will
cause the debug messages to appear on the first serial port.
config DEBUG_S3C_PORT
depends on DEBUG_LL && PLAT_S3C
bool "Kernel low-level debugging messages via S3C UART"
help
Say Y here if you want debug print routines to go to one of the
S3C internal UARTs. The chosen UART must have been configured
before it is used.
config DEBUG_S3C_UART
depends on PLAT_S3C
int "S3C UART to use for low-level debug"

1206
arch/arm/configs/kb9202_defconfig
View File

File diff suppressed because it is too large Load Diff

2
arch/arm/configs/s3c2410_defconfig
View File

@ -260,6 +260,7 @@ CONFIG_MACH_NEXCODER_2440=y
CONFIG_SMDK2440_CPU2440=y
CONFIG_MACH_AT2440EVB=y
CONFIG_CPU_S3C2442=y
CONFIG_MACH_MINI2440=y
#
# S3C2442 Machines
@ -2298,7 +2299,6 @@ CONFIG_DEBUG_ERRORS=y
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_DEBUG_LL=y
# CONFIG_DEBUG_ICEDCC is not set
CONFIG_DEBUG_S3C_PORT=y
CONFIG_DEBUG_S3C_UART=0
#

1
arch/arm/configs/s3c6400_defconfig
View File

@ -816,7 +816,6 @@ CONFIG_DEBUG_ERRORS=y
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_DEBUG_LL=y
# CONFIG_DEBUG_ICEDCC is not set
CONFIG_DEBUG_S3C_PORT=y
CONFIG_DEBUG_S3C_UART=0
#

1
arch/arm/configs/tct_hammer_defconfig
View File

@ -857,7 +857,6 @@ CONFIG_DEBUG_ERRORS=y
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_DEBUG_LL=y
# CONFIG_DEBUG_ICEDCC is not set
# CONFIG_DEBUG_S3C_PORT is not set
CONFIG_DEBUG_S3C_UART=0
#

92
arch/arm/configs/u300_defconfig
View File

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.30-rc6
# Mon Jun 1 09:18:22 2009
# Linux kernel version: 2.6.31-rc1
# Thu Jul 2 00:16:59 2009
#
CONFIG_ARM=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
@ -9,7 +9,7 @@ CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_MMU=y
# CONFIG_NO_IOPORT is not set
CONFIG_HAVE_TCM=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
@ -18,13 +18,12 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y
#
# General setup
@ -68,7 +67,6 @@ CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
# CONFIG_STRIP_ASM_SYMS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
@ -81,8 +79,13 @@ CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
# CONFIG_AIO is not set
#
# Performance Counters
#
# CONFIG_VM_EVENT_COUNTERS is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_STRIP_ASM_SYMS is not set
CONFIG_COMPAT_BRK=y
# CONFIG_SLAB is not set
CONFIG_SLUB=y
@ -94,6 +97,10 @@ CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_CLK=y
#
# GCOV-based kernel profiling
#
# CONFIG_SLOW_WORK is not set
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
@ -106,7 +113,7 @@ CONFIG_MODULE_UNLOAD=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_BLOCK=y
# CONFIG_LBD is not set
CONFIG_LBDAF=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
@ -138,9 +145,9 @@ CONFIG_DEFAULT_IOSCHED="deadline"
# CONFIG_ARCH_EP93XX is not set
# CONFIG_ARCH_FOOTBRIDGE is not set
# CONFIG_ARCH_MXC is not set
# CONFIG_ARCH_STMP3XXX is not set
# CONFIG_ARCH_NETX is not set
# CONFIG_ARCH_H720X is not set
# CONFIG_ARCH_IMX is not set
# CONFIG_ARCH_IOP13XX is not set
# CONFIG_ARCH_IOP32X is not set
# CONFIG_ARCH_IOP33X is not set
@ -216,8 +223,8 @@ CONFIG_ARM_THUMB=y
# CONFIG_CPU_DCACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_WRITETHROUGH is not set
# CONFIG_CPU_CACHE_ROUND_ROBIN is not set
# CONFIG_OUTER_CACHE is not set
CONFIG_ARM_VIC=y
CONFIG_ARM_VIC_NR=2
CONFIG_COMMON_CLKDEV=y
#
@ -243,7 +250,6 @@ CONFIG_PREEMPT=y
CONFIG_HZ=100
CONFIG_AEABI=y
CONFIG_OABI_COMPAT=y
CONFIG_ARCH_FLATMEM_HAS_HOLES=y
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
# CONFIG_HIGHMEM is not set
@ -258,17 +264,18 @@ CONFIG_SPLIT_PTLOCK_CPUS=4096
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
CONFIG_VIRT_TO_BUS=y
CONFIG_UNEVICTABLE_LRU=y
CONFIG_HAVE_MLOCK=y
CONFIG_HAVE_MLOCKED_PAGE_BIT=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_UACCESS_WITH_MEMCPY is not set
#
# Boot options
#
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_CMDLINE="root=/dev/mtdblock2 rw rootfstype=yaffs2 console=ttyAMA0,115200n8 ab3100.force=0,0x48 mtdparts=u300nand:128k@0x0(bootrecords)ro,8064k@128k(free)ro,253952k@8192k(platform) lpj=515072"
CONFIG_CMDLINE="root=/dev/ram0 rw rootfstype=rootfs console=ttyAMA0,115200n8 lpj=515072"
# CONFIG_XIP_KERNEL is not set
# CONFIG_KEXEC is not set
@ -359,6 +366,7 @@ CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
@ -497,6 +505,7 @@ CONFIG_MISC_DEVICES=y
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_AT25 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set
@ -538,6 +547,7 @@ CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_GPIO is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
@ -597,9 +607,11 @@ CONFIG_I2C_HELPER_AUTO=y
#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_DESIGNWARE is not set
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_SIMTEC is not set
CONFIG_I2C_STU300=y
#
# External I2C/SMBus adapter drivers
@ -620,7 +632,6 @@ CONFIG_I2C_HELPER_AUTO=y
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_PCF8575 is not set
# CONFIG_SENSORS_PCA9539 is not set
# CONFIG_SENSORS_MAX6875 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
@ -635,6 +646,7 @@ CONFIG_SPI_MASTER=y
#
# CONFIG_SPI_BITBANG is not set
# CONFIG_SPI_GPIO is not set
CONFIG_SPI_PL022=y
#
# SPI Protocol Masters
@ -647,6 +659,7 @@ CONFIG_POWER_SUPPLY=y
# CONFIG_PDA_POWER is not set
# CONFIG_BATTERY_DS2760 is not set
# CONFIG_BATTERY_BQ27x00 is not set
# CONFIG_BATTERY_MAX17040 is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_THERMAL_HWMON is not set
@ -657,6 +670,7 @@ CONFIG_WATCHDOG=y
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_COH901327_WATCHDOG=y
CONFIG_SSB_POSSIBLE=y
#
@ -678,22 +692,9 @@ CONFIG_SSB_POSSIBLE=y
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_PCF50633 is not set
#
# Multimedia devices
#
#
# Multimedia core support
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DVB_CORE is not set
# CONFIG_VIDEO_MEDIA is not set
#
# Multimedia drivers
#
# CONFIG_DAB is not set
CONFIG_AB3100_CORE=y
# CONFIG_EZX_PCAP is not set
# CONFIG_MEDIA_SUPPORT is not set
#
# Graphics support
@ -760,6 +761,11 @@ CONFIG_SND_JACK=y
# CONFIG_SND_VERBOSE_PROCFS is not set
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
# CONFIG_SND_RAWMIDI_SEQ is not set
# CONFIG_SND_OPL3_LIB_SEQ is not set
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
# CONFIG_SND_EMU10K1_SEQ is not set
# CONFIG_SND_DRIVERS is not set
# CONFIG_SND_ARM is not set
# CONFIG_SND_SPI is not set
@ -770,7 +776,7 @@ CONFIG_SND_SOC_I2C_AND_SPI=y
# CONFIG_HID_SUPPORT is not set
# CONFIG_USB_SUPPORT is not set
CONFIG_MMC=y
# CONFIG_MMC_DEBUG is not set
CONFIG_MMC_DEBUG=y
# CONFIG_MMC_UNSAFE_RESUME is not set
#
@ -797,7 +803,7 @@ CONFIG_LEDS_CLASS=y
#
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_GPIO is not set
# CONFIG_LEDS_LP5521 is not set
# CONFIG_LEDS_LP3944 is not set
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_BD2802 is not set
@ -845,6 +851,7 @@ CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8581 is not set
# CONFIG_RTC_DRV_RX8025 is not set
#
# SPI RTC drivers
@ -887,7 +894,10 @@ CONFIG_REGULATOR=y
# CONFIG_REGULATOR_DEBUG is not set
# CONFIG_REGULATOR_FIXED_VOLTAGE is not set
# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_REGULATOR_BQ24022 is not set
# CONFIG_REGULATOR_MAX1586 is not set
# CONFIG_REGULATOR_LP3971 is not set
# CONFIG_UIO is not set
# CONFIG_STAGING is not set
@ -900,16 +910,20 @@ CONFIG_REGULATOR=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
CONFIG_FILE_LOCKING=y
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
# CONFIG_BTRFS_FS is not set
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY is not set
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
CONFIG_FUSE_FS=y
# CONFIG_CUSE is not set
#
# Caches
@ -1033,6 +1047,7 @@ CONFIG_TIMER_STATS=y
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_PREEMPT is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
@ -1063,18 +1078,16 @@ CONFIG_DEBUG_INFO=y
# CONFIG_PAGE_POISONING is not set
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_TRACING_SUPPORT=y
#
# Tracers
#
CONFIG_FTRACE=y
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_PREEMPT_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_CONTEXT_SWITCH_TRACER is not set
# CONFIG_EVENT_TRACER is not set
# CONFIG_ENABLE_DEFAULT_TRACERS is not set
# CONFIG_BOOT_TRACER is not set
# CONFIG_TRACE_BRANCH_PROFILING is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_KMEMTRACE is not set
# CONFIG_WORKQUEUE_TRACER is not set
@ -1109,6 +1122,7 @@ CONFIG_GENERIC_FIND_LAST_BIT=y
# CONFIG_CRC32 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y

2
arch/arm/include/asm/page.h
View File

@ -12,7 +12,7 @@
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT 12
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#ifndef __ASSEMBLY__

53
arch/arm/include/asm/pgtable.h
View File

@ -285,15 +285,6 @@ extern struct page *empty_zero_page;
#define pte_young(pte) (pte_val(pte) & L_PTE_YOUNG)
#define pte_special(pte) (0)
/*
* The following only works if pte_present() is not true.
*/
#define pte_file(pte) (pte_val(pte) & L_PTE_FILE)
#define pte_to_pgoff(x) (pte_val(x) >> 2)
#define pgoff_to_pte(x) __pte(((x) << 2) | L_PTE_FILE)
#define PTE_FILE_MAX_BITS 30
#define PTE_BIT_FUNC(fn,op) \
static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; }
@ -384,16 +375,50 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
/* Encode and decode a swap entry.
/*
* Encode and decode a swap entry. Swap entries are stored in the Linux
* page tables as follows:
*
* We support up to 32GB of swap on 4k machines
* 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* <--------------- offset --------------------> <--- type --> 0 0
*
* This gives us up to 127 swap files and 32GB per swap file. Note that
* the offset field is always non-zero.
*/
#define __swp_type(x) (((x).val >> 2) & 0x7f)
#define __swp_offset(x) ((x).val >> 9)
#define __swp_entry(type,offset) ((swp_entry_t) { ((type) << 2) | ((offset) << 9) })
#define __SWP_TYPE_SHIFT 2
#define __SWP_TYPE_BITS 7
#define __SWP_TYPE_MASK ((1 << __SWP_TYPE_BITS) - 1)
#define __SWP_OFFSET_SHIFT (__SWP_TYPE_BITS + __SWP_TYPE_SHIFT)
#define __swp_type(x) (((x).val >> __SWP_TYPE_SHIFT) & __SWP_TYPE_MASK)
#define __swp_offset(x) ((x).val >> __SWP_OFFSET_SHIFT)
#define __swp_entry(type,offset) ((swp_entry_t) { ((type) << __SWP_TYPE_SHIFT) | ((offset) << __SWP_OFFSET_SHIFT) })
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(swp) ((pte_t) { (swp).val })
/*
* It is an error for the kernel to have more swap files than we can
* encode in the PTEs. This ensures that we know when MAX_SWAPFILES
* is increased beyond what we presently support.
*/
#define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > __SWP_TYPE_BITS)
/*
* Encode and decode a file entry. File entries are stored in the Linux
* page tables as follows:
*
* 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* <------------------------ offset -------------------------> 1 0
*/
#define pte_file(pte) (pte_val(pte) & L_PTE_FILE)
#define pte_to_pgoff(x) (pte_val(x) >> 2)
#define pgoff_to_pte(x) __pte(((x) << 2) | L_PTE_FILE)
#define PTE_FILE_MAX_BITS 30
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
/* FIXME: this is not correct */
#define kern_addr_valid(addr) (1)

2
arch/arm/include/asm/thread_info.h
View File

@ -73,7 +73,7 @@ struct thread_info {
.task = &tsk, \
.exec_domain = &default_exec_domain, \
.flags = 0, \
.preempt_count = 1, \
.preempt_count = INIT_PREEMPT_COUNT, \
.addr_limit = KERNEL_DS, \
.cpu_domain = domain_val(DOMAIN_USER, DOMAIN_MANAGER) | \
domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \

24
arch/arm/kernel/irq.c
View File

@ -98,17 +98,6 @@ unlock:
return 0;
}
/* Handle bad interrupts */
static struct irq_desc bad_irq_desc = {
.handle_irq = handle_bad_irq,
.lock = __SPIN_LOCK_UNLOCKED(bad_irq_desc.lock),
};
#ifdef CONFIG_CPUMASK_OFFSTACK
/* We are not allocating bad_irq_desc.affinity or .pending_mask */
#error "ARM architecture does not support CONFIG_CPUMASK_OFFSTACK."
#endif
/*
* do_IRQ handles all hardware IRQ's. Decoded IRQs should not
* come via this function. Instead, they should provide their
@ -124,10 +113,13 @@ asmlinkage void __exception asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
* Some hardware gives randomly wrong interrupts. Rather
* than crashing, do something sensible.
*/
if (irq >= NR_IRQS)
handle_bad_irq(irq, &bad_irq_desc);
else
if (unlikely(irq >= NR_IRQS)) {
if (printk_ratelimit())
printk(KERN_WARNING "Bad IRQ%u\n", irq);
ack_bad_irq(irq);
} else {
generic_handle_irq(irq);
}
/* AT91 specific workaround */
irq_finish(irq);
@ -165,10 +157,6 @@ void __init init_IRQ(void)
for (irq = 0; irq < NR_IRQS; irq++)
irq_desc[irq].status |= IRQ_NOREQUEST | IRQ_NOPROBE;
#ifdef CONFIG_SMP
cpumask_setall(bad_irq_desc.affinity);
bad_irq_desc.node = smp_processor_id();
#endif
init_arch_irq();
}

15
arch/arm/kernel/vmlinux.lds.S
View File

@ -6,6 +6,7 @@
#include <asm-generic/vmlinux.lds.h>
#include <asm/thread_info.h>
#include <asm/memory.h>
#include <asm/page.h>
OUTPUT_ARCH(arm)
ENTRY(stext)
@ -63,7 +64,7 @@ SECTIONS
usr/built-in.o(.init.ramfs)
__initramfs_end = .;
#endif
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
__per_cpu_load = .;
__per_cpu_start = .;
*(.data.percpu.page_aligned)
@ -73,7 +74,7 @@ SECTIONS
#ifndef CONFIG_XIP_KERNEL
__init_begin = _stext;
INIT_DATA
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
__init_end = .;
#endif
}
@ -118,7 +119,7 @@ SECTIONS
*(.got) /* Global offset table */
}
RODATA
RO_DATA(PAGE_SIZE)
_etext = .; /* End of text and rodata section */
@ -158,17 +159,17 @@ SECTIONS
*(.data.init_task)
#ifdef CONFIG_XIP_KERNEL
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
__init_begin = .;
INIT_DATA
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
__init_end = .;
#endif
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
__nosave_begin = .;
*(.data.nosave)
. = ALIGN(4096);
. = ALIGN(PAGE_SIZE);
__nosave_end = .;
/*

54
arch/arm/mach-at91/board-sam9g20ek.c
View File

@ -24,6 +24,8 @@
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/at73c213.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/clk.h>
#include <mach/hardware.h>
@ -218,6 +220,56 @@ static struct gpio_led ek_leds[] = {
}
};
/*
* GPIO Buttons
*/
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button ek_buttons[] = {
{
.gpio = AT91_PIN_PA30,
.code = BTN_3,
.desc = "Button 3",
.active_low = 1,
.wakeup = 1,
},
{
.gpio = AT91_PIN_PA31,
.code = BTN_4,
.desc = "Button 4",
.active_low = 1,
.wakeup = 1,
}
};
static struct gpio_keys_platform_data ek_button_data = {
.buttons = ek_buttons,
.nbuttons = ARRAY_SIZE(ek_buttons),
};
static struct platform_device ek_button_device = {
.name = "gpio-keys",
.id = -1,
.num_resources = 0,
.dev = {
.platform_data = &ek_button_data,
}
};
static void __init ek_add_device_buttons(void)
{
at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */
at91_set_deglitch(AT91_PIN_PA30, 1);
at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
at91_set_deglitch(AT91_PIN_PA31, 1);
platform_device_register(&ek_button_device);
}
#else
static void __init ek_add_device_buttons(void) {}
#endif
static struct i2c_board_info __initdata ek_i2c_devices[] = {
{
I2C_BOARD_INFO("24c512", 0x50),
@ -245,6 +297,8 @@ static void __init ek_board_init(void)
at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
/* LEDs */
at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
/* Push Buttons */
ek_add_device_buttons();
/* PCK0 provides MCLK to the WM8731 */
at91_set_B_periph(AT91_PIN_PC1, 0);
/* SSC (for WM8731) */

6
arch/arm/mach-at91/board-sam9rlek.c
View File

@ -186,19 +186,21 @@ static struct fb_monspecs at91fb_default_monspecs = {
static void at91_lcdc_power_control(int on)
{
if (on)
at91_set_gpio_value(AT91_PIN_PA30, 0); /* power up */
at91_set_gpio_value(AT91_PIN_PC1, 0); /* power up */
else
at91_set_gpio_value(AT91_PIN_PA30, 1); /* power down */
at91_set_gpio_value(AT91_PIN_PC1, 1); /* power down */
}
/* Driver datas */
static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
.lcdcon_is_backlight = true,
.default_bpp = 16,
.default_dmacon = ATMEL_LCDC_DMAEN,
.default_lcdcon2 = AT91SAM9RL_DEFAULT_LCDCON2,
.default_monspecs = &at91fb_default_monspecs,
.atmel_lcdfb_power_control = at91_lcdc_power_control,
.guard_time = 1,
.lcd_wiring_mode = ATMEL_LCDC_WIRING_RGB,
};
#else

3
arch/arm/mach-omap1/board-nokia770.c
View File

@ -36,7 +36,6 @@
#include <mach/hwa742.h>
#include <mach/lcd_mipid.h>
#include <mach/mmc.h>
#include <mach/usb.h>
#include <mach/clock.h>
#define ADS7846_PENDOWN_GPIO 15
@ -205,9 +204,11 @@ static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
static struct omap_mmc_platform_data nokia770_mmc2_data = {
.nr_slots = 1,
.dma_mask = 0xffffffff,
.max_freq = 12000000,
.slots[0] = {
.set_power = nokia770_mmc_set_power,
.get_cover_state = nokia770_mmc_get_cover_state,
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.name = "mmcblk",
},
};

2
arch/arm/mach-omap1/mailbox.c
View File

@ -203,5 +203,5 @@ module_exit(omap1_mbox_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("omap mailbox: omap1 architecture specific functions");
MODULE_AUTHOR("Hiroshi DOYU" <Hiroshi.DOYU@nokia.com>);
MODULE_AUTHOR("Hiroshi DOYU <Hiroshi.DOYU@nokia.com>");
MODULE_ALIAS("platform:omap1-mailbox");

1
arch/arm/mach-omap2/board-rx51-peripherals.c
View File

@ -362,6 +362,7 @@ static struct omap_onenand_platform_data board_onenand_data = {
.gpio_irq = 65,
.parts = onenand_partitions,
.nr_parts = ARRAY_SIZE(onenand_partitions),
.flags = ONENAND_SYNC_READWRITE,
};
static void __init board_onenand_init(void)

21
arch/arm/mach-omap2/gpmc-onenand.c
View File

@ -31,6 +31,8 @@ static struct platform_device gpmc_onenand_device = {
static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base)
{
struct gpmc_timings t;
u32 reg;
int err;
const int t_cer = 15;
const int t_avdp = 12;
@ -43,6 +45,11 @@ static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base)
const int t_wpl = 40;
const int t_wph = 30;
/* Ensure sync read and sync write are disabled */
reg = readw(onenand_base + ONENAND_REG_SYS_CFG1);
reg &= ~ONENAND_SYS_CFG1_SYNC_READ & ~ONENAND_SYS_CFG1_SYNC_WRITE;
writew(reg, onenand_base + ONENAND_REG_SYS_CFG1);
memset(&t, 0, sizeof(t));
t.sync_clk = 0;
t.cs_on = 0;
@ -74,7 +81,16 @@ static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base)
GPMC_CONFIG1_DEVICESIZE_16 |
GPMC_CONFIG1_MUXADDDATA);
return gpmc_cs_set_timings(cs, &t);
err = gpmc_cs_set_timings(cs, &t);
if (err)
return err;
/* Ensure sync read and sync write are disabled */
reg = readw(onenand_base + ONENAND_REG_SYS_CFG1);
reg &= ~ONENAND_SYS_CFG1_SYNC_READ & ~ONENAND_SYS_CFG1_SYNC_WRITE;
writew(reg, onenand_base + ONENAND_REG_SYS_CFG1);
return 0;
}
static void set_onenand_cfg(void __iomem *onenand_base, int latency,
@ -124,7 +140,8 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
} else if (cfg->flags & ONENAND_SYNC_READWRITE) {
sync_read = 1;
sync_write = 1;
}
} else
return omap2_onenand_set_async_mode(cs, onenand_base);
if (!freq) {
/* Very first call freq is not known */

22
arch/arm/mach-omap2/id.c
View File

@ -48,6 +48,28 @@ int omap_chip_is(struct omap_chip_id oci)
}
EXPORT_SYMBOL(omap_chip_is);
int omap_type(void)
{
u32 val = 0;
if (cpu_is_omap24xx())
val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
else if (cpu_is_omap34xx())
val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
else {
pr_err("Cannot detect omap type!\n");
goto out;
}
val &= OMAP2_DEVICETYPE_MASK;
val >>= 8;
out:
return val;
}
EXPORT_SYMBOL(omap_type);
/*----------------------------------------------------------------------------*/
#define OMAP_TAP_IDCODE 0x0204

6
arch/arm/mach-omap2/mailbox.c
View File

@ -282,12 +282,12 @@ static int __devinit omap2_mbox_probe(struct platform_device *pdev)
return -ENOMEM;
/* DSP or IVA2 IRQ */
mbox_dsp_info.irq = platform_get_irq(pdev, 0);
if (mbox_dsp_info.irq < 0) {
ret = platform_get_irq(pdev, 0);
if (ret < 0) {
dev_err(&pdev->dev, "invalid irq resource\n");
ret = -ENODEV;
goto err_dsp;
}
mbox_dsp_info.irq = ret;
ret = omap_mbox_register(&pdev->dev, &mbox_dsp_info);
if (ret)

13
arch/arm/mach-omap2/mmc-twl4030.c
View File

@ -263,8 +263,19 @@ static int twl_mmc1_set_power(struct device *dev, int slot, int power_on,
static int twl_mmc23_set_power(struct device *dev, int slot, int power_on, int vdd)
{
int ret = 0;
struct twl_mmc_controller *c = &hsmmc[1];
struct twl_mmc_controller *c = NULL;
struct omap_mmc_platform_data *mmc = dev->platform_data;
int i;
for (i = 1; i < ARRAY_SIZE(hsmmc); i++) {
if (mmc == hsmmc[i].mmc) {
c = &hsmmc[i];
break;
}
}
if (c == NULL)
return -ENODEV;
/* If we don't see a Vcc regulator, assume it's a fixed
* voltage always-on regulator.

3
arch/arm/mach-s3c2440/mach-mini2440.c
View File

@ -48,8 +48,6 @@
#include <plat/mci.h>
#include <plat/udc.h>
#include <plat/regs-serial.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
@ -275,6 +273,7 @@ static struct s3c2410_nand_set mini2440_nand_sets[] __initdata = {
.nr_chips = 1,
.nr_partitions = ARRAY_SIZE(mini2440_default_nand_part),
.partitions = mini2440_default_nand_part,
.flash_bbt = 1, /* we use u-boot to create a BBT */
},
};

3
arch/arm/mach-s3c2442/mach-gta02.c
View File

@ -433,8 +433,7 @@ static struct s3c2410_nand_set gta02_nand_sets[] = {
*/
.name = "neo1973-nand",
.nr_chips = 1,
.use_bbt = 1,
.force_soft_ecc = 1,
.flash_bbt = 1,
},
};

121
arch/arm/mach-u300/clock.c
View File

@ -24,6 +24,7 @@
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/io.h>
#include <linux/seq_file.h>
#include <asm/clkdev.h>
#include <mach/hardware.h>
@ -702,6 +703,7 @@ static struct clk amba_clk = {
.rate = 52000000, /* this varies! */
.hw_ctrld = true,
.reset = false,
.lock = __SPIN_LOCK_UNLOCKED(amba_clk.lock),
};
/*
@ -720,6 +722,7 @@ static struct clk cpu_clk = {
.set_rate = clk_set_rate_cpuclk,
.get_rate = clk_get_rate_cpuclk,
.round_rate = clk_round_rate_cpuclk,
.lock = __SPIN_LOCK_UNLOCKED(cpu_clk.lock),
};
static struct clk nandif_clk = {
@ -732,6 +735,7 @@ static struct clk nandif_clk = {
.clk_val = U300_SYSCON_SBCER_NANDIF_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(nandif_clk.lock),
};
static struct clk semi_clk = {
@ -744,6 +748,7 @@ static struct clk semi_clk = {
.clk_val = U300_SYSCON_SBCER_SEMI_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(semi_clk.lock),
};
#ifdef CONFIG_MACH_U300_BS335
@ -758,6 +763,7 @@ static struct clk isp_clk = {
.clk_val = U300_SYSCON_SBCER_ISP_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(isp_clk.lock),
};
static struct clk cds_clk = {
@ -771,6 +777,7 @@ static struct clk cds_clk = {
.clk_val = U300_SYSCON_SBCER_CDS_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(cds_clk.lock),
};
#endif
@ -785,6 +792,7 @@ static struct clk dma_clk = {
.clk_val = U300_SYSCON_SBCER_DMAC_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(dma_clk.lock),
};
static struct clk aaif_clk = {
@ -798,6 +806,7 @@ static struct clk aaif_clk = {
.clk_val = U300_SYSCON_SBCER_AAIF_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(aaif_clk.lock),
};
static struct clk apex_clk = {
@ -811,6 +820,7 @@ static struct clk apex_clk = {
.clk_val = U300_SYSCON_SBCER_APEX_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(apex_clk.lock),
};
static struct clk video_enc_clk = {
@ -825,6 +835,7 @@ static struct clk video_enc_clk = {
.clk_val = U300_SYSCON_SBCER_VIDEO_ENC_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(video_enc_clk.lock),
};
static struct clk xgam_clk = {
@ -839,6 +850,7 @@ static struct clk xgam_clk = {
.get_rate = clk_get_rate_xgamclk,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(xgam_clk.lock),
};
/* This clock is used to activate the video encoder */
@ -854,6 +866,7 @@ static struct clk ahb_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_ahb_clk,
.lock = __SPIN_LOCK_UNLOCKED(ahb_clk.lock),
};
@ -871,6 +884,7 @@ static struct clk ahb_subsys_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_ahb_clk,
.lock = __SPIN_LOCK_UNLOCKED(ahb_subsys_clk.lock),
};
static struct clk intcon_clk = {
@ -882,6 +896,8 @@ static struct clk intcon_clk = {
.res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR,
.res_mask = U300_SYSCON_RRR_INTCON_RESET_EN,
/* INTCON can be reset but not clock-gated */
.lock = __SPIN_LOCK_UNLOCKED(intcon_clk.lock),
};
static struct clk mspro_clk = {
@ -895,6 +911,7 @@ static struct clk mspro_clk = {
.clk_val = U300_SYSCON_SBCER_MSPRO_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(mspro_clk.lock),
};
static struct clk emif_clk = {
@ -909,6 +926,7 @@ static struct clk emif_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_emif_clk,
.lock = __SPIN_LOCK_UNLOCKED(emif_clk.lock),
};
@ -926,6 +944,7 @@ static struct clk fast_clk = {
.clk_val = U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(fast_clk.lock),
};
static struct clk mmcsd_clk = {
@ -942,6 +961,7 @@ static struct clk mmcsd_clk = {
.round_rate = clk_round_rate_mclk,
.disable = syscon_clk_disable,
.enable = syscon_clk_enable,
.lock = __SPIN_LOCK_UNLOCKED(mmcsd_clk.lock),
};
static struct clk i2s0_clk = {
@ -956,6 +976,7 @@ static struct clk i2s0_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
.lock = __SPIN_LOCK_UNLOCKED(i2s0_clk.lock),
};
static struct clk i2s1_clk = {
@ -970,6 +991,7 @@ static struct clk i2s1_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
.lock = __SPIN_LOCK_UNLOCKED(i2s1_clk.lock),
};
static struct clk i2c0_clk = {
@ -984,6 +1006,7 @@ static struct clk i2c0_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
.lock = __SPIN_LOCK_UNLOCKED(i2c0_clk.lock),
};
static struct clk i2c1_clk = {
@ -998,6 +1021,7 @@ static struct clk i2c1_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
.lock = __SPIN_LOCK_UNLOCKED(i2c1_clk.lock),
};
static struct clk spi_clk = {
@ -1012,6 +1036,7 @@ static struct clk spi_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
.lock = __SPIN_LOCK_UNLOCKED(spi_clk.lock),
};
#ifdef CONFIG_MACH_U300_BS335
@ -1026,6 +1051,7 @@ static struct clk uart1_clk = {
.clk_val = U300_SYSCON_SBCER_UART1_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(uart1_clk.lock),
};
#endif
@ -1044,6 +1070,7 @@ static struct clk slow_clk = {
.clk_val = U300_SYSCON_SBCER_SLOW_BRIDGE_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(slow_clk.lock),
};
/* TODO: implement SYSCON clock? */
@ -1055,6 +1082,7 @@ static struct clk wdog_clk = {
.rate = 32768,
.reset = false,
/* This is always on, cannot be enabled/disabled or reset */
.lock = __SPIN_LOCK_UNLOCKED(wdog_clk.lock),
};
/* This one is hardwired to PLL13 */
@ -1069,6 +1097,7 @@ static struct clk uart_clk = {
.clk_val = U300_SYSCON_SBCER_UART_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(uart_clk.lock),
};
static struct clk keypad_clk = {
@ -1082,6 +1111,7 @@ static struct clk keypad_clk = {
.clk_val = U300_SYSCON_SBCER_KEYPAD_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(keypad_clk.lock),
};
static struct clk gpio_clk = {
@ -1095,6 +1125,7 @@ static struct clk gpio_clk = {
.clk_val = U300_SYSCON_SBCER_GPIO_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(gpio_clk.lock),
};
static struct clk rtc_clk = {
@ -1106,6 +1137,7 @@ static struct clk rtc_clk = {
.res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR,
.res_mask = U300_SYSCON_RSR_RTC_RESET_EN,
/* This clock is always on, cannot be enabled/disabled */
.lock = __SPIN_LOCK_UNLOCKED(rtc_clk.lock),
};
static struct clk bustr_clk = {
@ -1119,6 +1151,7 @@ static struct clk bustr_clk = {
.clk_val = U300_SYSCON_SBCER_BTR_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(bustr_clk.lock),
};
static struct clk evhist_clk = {
@ -1132,6 +1165,7 @@ static struct clk evhist_clk = {
.clk_val = U300_SYSCON_SBCER_EH_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(evhist_clk.lock),
};
static struct clk timer_clk = {
@ -1145,6 +1179,7 @@ static struct clk timer_clk = {
.clk_val = U300_SYSCON_SBCER_ACC_TMR_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(timer_clk.lock),
};
static struct clk app_timer_clk = {
@ -1158,6 +1193,7 @@ static struct clk app_timer_clk = {
.clk_val = U300_SYSCON_SBCER_APP_TMR_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(app_timer_clk.lock),
};
#ifdef CONFIG_MACH_U300_BS335
@ -1172,6 +1208,7 @@ static struct clk ppm_clk = {
.clk_val = U300_SYSCON_SBCER_PPM_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.lock = __SPIN_LOCK_UNLOCKED(ppm_clk.lock),
};
#endif
@ -1187,53 +1224,53 @@ static struct clk ppm_clk = {
*/
static struct clk_lookup lookups[] = {
/* Connected directly to the AMBA bus */
DEF_LOOKUP("amba", &amba_clk),
DEF_LOOKUP("cpu", &cpu_clk),
DEF_LOOKUP("nandif", &nandif_clk),
DEF_LOOKUP("semi", &semi_clk),
DEF_LOOKUP("amba", &amba_clk),
DEF_LOOKUP("cpu", &cpu_clk),
DEF_LOOKUP("fsmc", &nandif_clk),
DEF_LOOKUP("semi", &semi_clk),
#ifdef CONFIG_MACH_U300_BS335
DEF_LOOKUP("isp", &isp_clk),
DEF_LOOKUP("cds", &cds_clk),
DEF_LOOKUP("isp", &isp_clk),
DEF_LOOKUP("cds", &cds_clk),
#endif
DEF_LOOKUP("dma", &dma_clk),
DEF_LOOKUP("aaif", &aaif_clk),
DEF_LOOKUP("apex", &apex_clk),
DEF_LOOKUP("dma", &dma_clk),
DEF_LOOKUP("msl", &aaif_clk),
DEF_LOOKUP("apex", &apex_clk),
DEF_LOOKUP("video_enc", &video_enc_clk),
DEF_LOOKUP("xgam", &xgam_clk),
DEF_LOOKUP("ahb", &ahb_clk),
DEF_LOOKUP("xgam", &xgam_clk),
DEF_LOOKUP("ahb", &ahb_clk),
/* AHB bridge clocks */
DEF_LOOKUP("ahb", &ahb_subsys_clk),
DEF_LOOKUP("intcon", &intcon_clk),
DEF_LOOKUP("mspro", &mspro_clk),
DEF_LOOKUP("pl172", &emif_clk),
DEF_LOOKUP("ahb_subsys", &ahb_subsys_clk),
DEF_LOOKUP("intcon", &intcon_clk),
DEF_LOOKUP("mspro", &mspro_clk),
DEF_LOOKUP("pl172", &emif_clk),
/* FAST bridge clocks */
DEF_LOOKUP("fast", &fast_clk),
DEF_LOOKUP("mmci", &mmcsd_clk),
DEF_LOOKUP("fast", &fast_clk),
DEF_LOOKUP("mmci", &mmcsd_clk),
/*
* The .0 and .1 identifiers on these comes from the platform device
* .id field and are assigned when the platform devices are registered.
*/
DEF_LOOKUP("i2s.0", &i2s0_clk),
DEF_LOOKUP("i2s.1", &i2s1_clk),
DEF_LOOKUP("stddci2c.0", &i2c0_clk),
DEF_LOOKUP("stddci2c.1", &i2c1_clk),
DEF_LOOKUP("pl022", &spi_clk),
DEF_LOOKUP("i2s.0", &i2s0_clk),
DEF_LOOKUP("i2s.1", &i2s1_clk),
DEF_LOOKUP("stu300.0", &i2c0_clk),
DEF_LOOKUP("stu300.1", &i2c1_clk),
DEF_LOOKUP("pl022", &spi_clk),
#ifdef CONFIG_MACH_U300_BS335
DEF_LOOKUP("uart1", &uart1_clk),
DEF_LOOKUP("uart1", &uart1_clk),
#endif
/* SLOW bridge clocks */
DEF_LOOKUP("slow", &slow_clk),
DEF_LOOKUP("wdog", &wdog_clk),
DEF_LOOKUP("uart0", &uart_clk),
DEF_LOOKUP("apptimer", &app_timer_clk),
DEF_LOOKUP("keypad", &keypad_clk),
DEF_LOOKUP("slow", &slow_clk),
DEF_LOOKUP("coh901327_wdog", &wdog_clk),
DEF_LOOKUP("uart0", &uart_clk),
DEF_LOOKUP("apptimer", &app_timer_clk),
DEF_LOOKUP("coh901461-keypad", &keypad_clk),
DEF_LOOKUP("u300-gpio", &gpio_clk),
DEF_LOOKUP("rtc0", &rtc_clk),
DEF_LOOKUP("bustr", &bustr_clk),
DEF_LOOKUP("evhist", &evhist_clk),
DEF_LOOKUP("timer", &timer_clk),
DEF_LOOKUP("rtc-coh901331", &rtc_clk),
DEF_LOOKUP("bustr", &bustr_clk),
DEF_LOOKUP("evhist", &evhist_clk),
DEF_LOOKUP("timer", &timer_clk),
#ifdef CONFIG_MACH_U300_BS335
DEF_LOOKUP("ppm", &ppm_clk),
DEF_LOOKUP("ppm", &ppm_clk),
#endif
};
@ -1427,16 +1464,20 @@ static const struct file_operations u300_clocks_operations = {
.release = single_release,
};
static void init_clk_read_procfs(void)
static int __init init_clk_read_debugfs(void)
{
/* Expose a simple debugfs interface to view all clocks */
(void) debugfs_create_file("u300_clocks", S_IFREG | S_IRUGO,
NULL, NULL, &u300_clocks_operations);
}
#else
static inline void init_clk_read_procfs(void)
{
NULL, NULL,
&u300_clocks_operations);
return 0;
}
/*
* This needs to come in after the core_initcall() for the
* overall clocks, because debugfs is not available until
* the subsystems come up.
*/
module_init(init_clk_read_debugfs);
#endif
static int __init u300_clock_init(void)
@ -1462,8 +1503,6 @@ static int __init u300_clock_init(void)
clk_register();
init_clk_read_procfs();
/*
* Some of these may be on when we boot the system so make sure they
* are turned OFF.

1
arch/arm/mm/proc-syms.c
View File

@ -27,6 +27,7 @@ EXPORT_SYMBOL(__cpuc_flush_kern_all);
EXPORT_SYMBOL(__cpuc_flush_user_all);
EXPORT_SYMBOL(__cpuc_flush_user_range);
EXPORT_SYMBOL(__cpuc_coherent_kern_range);
EXPORT_SYMBOL(__cpuc_flush_dcache_page);
EXPORT_SYMBOL(dmac_inv_range); /* because of flush_ioremap_region() */
#else
EXPORT_SYMBOL(cpu_cache);

13
arch/arm/plat-omap/dma.c
View File

@ -2457,6 +2457,19 @@ static int __init omap_init_dma(void)
setup_irq(irq, &omap24xx_dma_irq);
}
/* Enable smartidle idlemodes and autoidle */
if (cpu_is_omap34xx()) {
u32 v = dma_read(OCP_SYSCONFIG);
v &= ~(DMA_SYSCONFIG_MIDLEMODE_MASK |
DMA_SYSCONFIG_SIDLEMODE_MASK |
DMA_SYSCONFIG_AUTOIDLE);
v |= (DMA_SYSCONFIG_MIDLEMODE(DMA_IDLEMODE_SMARTIDLE) |
DMA_SYSCONFIG_SIDLEMODE(DMA_IDLEMODE_SMARTIDLE) |
DMA_SYSCONFIG_AUTOIDLE);
dma_write(v , OCP_SYSCONFIG);
}
/* FIXME: Update LCD DMA to work on 24xx */
if (cpu_class_is_omap1()) {
r = request_irq(INT_DMA_LCD, lcd_dma_irq_handler, 0,

1
arch/arm/plat-omap/gpio.c
View File

@ -1585,6 +1585,7 @@ static int __init _omap_gpio_init(void)
__raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_IRQENABLE1);
__raw_writel(0xffffffff, bank->base + OMAP24XX_GPIO_IRQSTATUS1);
__raw_writew(0x0015, bank->base + OMAP24XX_GPIO_SYSCONFIG);
__raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_DEBOUNCE_EN);
/* Initialize interface clock ungated, module enabled */
__raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);

22
arch/arm/plat-omap/include/mach/cpu.h
View File

@ -30,6 +30,17 @@
#ifndef __ASM_ARCH_OMAP_CPU_H
#define __ASM_ARCH_OMAP_CPU_H
/*
* Omap device type i.e. EMU/HS/TST/GP/BAD
*/
#define OMAP2_DEVICE_TYPE_TEST 0
#define OMAP2_DEVICE_TYPE_EMU 1
#define OMAP2_DEVICE_TYPE_SEC 2
#define OMAP2_DEVICE_TYPE_GP 3
#define OMAP2_DEVICE_TYPE_BAD 4
int omap_type(void);
struct omap_chip_id {
u8 oc;
u8 type;
@ -424,17 +435,6 @@ IS_OMAP_TYPE(3430, 0x3430)
int omap_chip_is(struct omap_chip_id oci);
int omap_type(void);
/*
* Macro to detect device type i.e. EMU/HS/TST/GP/BAD
*/
#define OMAP2_DEVICE_TYPE_TEST 0
#define OMAP2_DEVICE_TYPE_EMU 1
#define OMAP2_DEVICE_TYPE_SEC 2
#define OMAP2_DEVICE_TYPE_GP 3
#define OMAP2_DEVICE_TYPE_BAD 4
void omap2_check_revision(void);
#endif /* defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) */

15
arch/arm/plat-omap/include/mach/dma.h
View File

@ -389,6 +389,21 @@
#define DMA_THREAD_FIFO_25 (0x02 << 14)
#define DMA_THREAD_FIFO_50 (0x03 << 14)
/* DMA4_OCP_SYSCONFIG bits */
#define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12)
#define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8)
#define DMA_SYSCONFIG_EMUFREE (1 << 5)
#define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3)
#define DMA_SYSCONFIG_SOFTRESET (1 << 2)
#define DMA_SYSCONFIG_AUTOIDLE (1 << 0)
#define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12)
#define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3)
#define DMA_IDLEMODE_SMARTIDLE 0x2
#define DMA_IDLEMODE_NO_IDLE 0x1
#define DMA_IDLEMODE_FORCE_IDLE 0x0
/* Chaining modes*/
#ifndef CONFIG_ARCH_OMAP1
#define OMAP_DMA_STATIC_CHAIN 0x1

2
arch/arm/plat-omap/include/mach/io.h
View File

@ -201,7 +201,7 @@
#define OMAP2_IO_ADDRESS(pa) IOMEM(__OMAP2_IO_ADDRESS(pa))
#ifdef __ASSEMBLER__
#define IOMEM(x) x
#define IOMEM(x) (x)
#else
#define IOMEM(x) ((void __force __iomem *)(x))

2
arch/arm/plat-omap/iommu.c
View File

@ -298,7 +298,7 @@ void flush_iotlb_page(struct iommu *obj, u32 da)
if ((start <= da) && (da < start + bytes)) {
dev_dbg(obj->dev, "%s: %08x<=%08x(%x)\n",
__func__, start, da, bytes);
iotlb_load_cr(obj, &cr);
iommu_write_reg(obj, 1, MMU_FLUSH_ENTRY);
}
}

7
arch/arm/plat-omap/sram.c
View File

@ -133,7 +133,12 @@ void __init omap_detect_sram(void)
if (cpu_is_omap34xx()) {
omap_sram_base = OMAP3_SRAM_PUB_VA;
omap_sram_start = OMAP3_SRAM_PUB_PA;
omap_sram_size = 0x8000; /* 32K */
if ((omap_type() == OMAP2_DEVICE_TYPE_EMU) ||
(omap_type() == OMAP2_DEVICE_TYPE_SEC)) {
omap_sram_size = 0x7000; /* 28K */
} else {
omap_sram_size = 0x8000; /* 32K */
}
} else {
omap_sram_base = OMAP2_SRAM_PUB_VA;
omap_sram_start = OMAP2_SRAM_PUB_PA;

2
arch/arm/plat-s3c/Makefile
View File

@ -34,7 +34,7 @@ obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o
obj-y += dev-i2c0.o
obj-$(CONFIG_S3C_DEV_I2C1) += dev-i2c1.o
obj-$(CONFIG_SND_S3C24XX_SOC) += dev-audio.o
obj-$(CONFIG_SND_S3C64XX_SOC_I2S) += dev-audio.o
obj-$(CONFIG_S3C_DEV_FB) += dev-fb.o
obj-$(CONFIG_S3C_DEV_USB_HOST) += dev-usb.o
obj-$(CONFIG_S3C_DEV_USB_HSOTG) += dev-usb-hsotg.o

1
arch/arm/plat-s3c/include/plat/devs.h
View File

@ -37,6 +37,7 @@ extern struct platform_device s3c_device_i2c1;
extern struct platform_device s3c_device_rtc;
extern struct platform_device s3c_device_adc;
extern struct platform_device s3c_device_sdi;
extern struct platform_device s3c_device_iis;
extern struct platform_device s3c_device_hwmon;
extern struct platform_device s3c_device_hsmmc0;
extern struct platform_device s3c_device_hsmmc1;

2
arch/arm/plat-s3c24xx/Makefile
View File

@ -29,7 +29,7 @@ obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o
obj-$(CONFIG_PM) += pm.o
obj-$(CONFIG_PM) += irq-pm.o
obj-$(CONFIG_PM) += sleep.o
obj-$(CONFIG_HAVE_PWM) += pwm.o
obj-$(CONFIG_S3C24XX_PWM) += pwm.o
obj-$(CONFIG_S3C2410_CLOCK) += s3c2410-clock.o
obj-$(CONFIG_S3C2410_DMA) += dma.o
obj-$(CONFIG_S3C24XX_ADC) += adc.o

3
arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
View File

@ -12,8 +12,7 @@
*/
#include <linux/kernel.h>
#include <mach/hardware.h>
#include <linux/gpio.h>
#include <mach/spi.h>
#include <mach/regs-gpio.h>

3
arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c
View File

@ -12,8 +12,7 @@
*/
#include <linux/kernel.h>
#include <mach/hardware.h>
#include <linux/gpio.h>
#include <mach/spi.h>
#include <mach/regs-gpio.h>

2
arch/avr32/include/asm/thread_info.h
View File

@ -40,7 +40,7 @@ struct thread_info {
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.preempt_count = INIT_PREEMPT_COUNT, \
.restart_block = { \
.fn = do_no_restart_syscall \
} \

13
arch/avr32/kernel/traps.c
View File

@ -32,22 +32,25 @@ void NORET_TYPE die(const char *str, struct pt_regs *regs, long err)
spin_lock_irq(&die_lock);
bust_spinlocks(1);
printk(KERN_ALERT "Oops: %s, sig: %ld [#%d]\n" KERN_EMERG,
printk(KERN_ALERT "Oops: %s, sig: %ld [#%d]\n",
str, err, ++die_counter);
printk(KERN_EMERG);
#ifdef CONFIG_PREEMPT
printk("PREEMPT ");
printk(KERN_CONT "PREEMPT ");
#endif
#ifdef CONFIG_FRAME_POINTER
printk("FRAME_POINTER ");
printk(KERN_CONT "FRAME_POINTER ");
#endif
if (current_cpu_data.features & AVR32_FEATURE_OCD) {
unsigned long did = ocd_read(DID);
printk("chip: 0x%03lx:0x%04lx rev %lu\n",
printk(KERN_CONT "chip: 0x%03lx:0x%04lx rev %lu\n",
(did >> 1) & 0x7ff,
(did >> 12) & 0x7fff,
(did >> 28) & 0xf);
} else {
printk("cpu: arch %u r%u / core %u r%u\n",
printk(KERN_CONT "cpu: arch %u r%u / core %u r%u\n",
current_cpu_data.arch_type,
current_cpu_data.arch_revision,
current_cpu_data.cpu_type,

2
arch/blackfin/include/asm/thread_info.h
View File

@ -77,7 +77,7 @@ struct thread_info {
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.preempt_count = INIT_PREEMPT_COUNT, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \

1
arch/blackfin/kernel/ptrace.c
View File

@ -31,7 +31,6 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>

41
arch/blackfin/kernel/setup.c
View File

@ -408,13 +408,14 @@ static void __init print_memory_map(char *who)
bfin_memmap.map[i].addr + bfin_memmap.map[i].size);
switch (bfin_memmap.map[i].type) {
case BFIN_MEMMAP_RAM:
printk("(usable)\n");
break;
printk(KERN_CONT "(usable)\n");
break;
case BFIN_MEMMAP_RESERVED:
printk("(reserved)\n");
break;
default: printk("type %lu\n", bfin_memmap.map[i].type);
break;
printk(KERN_CONT "(reserved)\n");
break;
default:
printk(KERN_CONT "type %lu\n", bfin_memmap.map[i].type);
break;
}
}
}
@ -614,19 +615,19 @@ static __init void memory_setup(void)
printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
printk(KERN_INFO "Memory map:\n"
KERN_INFO " fixedcode = 0x%p-0x%p\n"
KERN_INFO " text = 0x%p-0x%p\n"
KERN_INFO " rodata = 0x%p-0x%p\n"
KERN_INFO " bss = 0x%p-0x%p\n"
KERN_INFO " data = 0x%p-0x%p\n"
KERN_INFO " stack = 0x%p-0x%p\n"
KERN_INFO " init = 0x%p-0x%p\n"
KERN_INFO " available = 0x%p-0x%p\n"
" fixedcode = 0x%p-0x%p\n"
" text = 0x%p-0x%p\n"
" rodata = 0x%p-0x%p\n"
" bss = 0x%p-0x%p\n"
" data = 0x%p-0x%p\n"
" stack = 0x%p-0x%p\n"
" init = 0x%p-0x%p\n"
" available = 0x%p-0x%p\n"
#ifdef CONFIG_MTD_UCLINUX
KERN_INFO " rootfs = 0x%p-0x%p\n"
" rootfs = 0x%p-0x%p\n"
#endif
#if DMA_UNCACHED_REGION > 0
KERN_INFO " DMA Zone = 0x%p-0x%p\n"
" DMA Zone = 0x%p-0x%p\n"
#endif
, (void *)FIXED_CODE_START, (void *)FIXED_CODE_END,
_stext, _etext,
@ -859,13 +860,13 @@ void __init setup_arch(char **cmdline_p)
#endif
printk(KERN_INFO "Hardware Trace ");
if (bfin_read_TBUFCTL() & 0x1)
printk("Active ");
printk(KERN_CONT "Active ");
else
printk("Off ");
printk(KERN_CONT "Off ");
if (bfin_read_TBUFCTL() & 0x2)
printk("and Enabled\n");
printk(KERN_CONT "and Enabled\n");
else
printk("and Disabled\n");
printk(KERN_CONT "and Disabled\n");
#if defined(CONFIG_CHR_DEV_FLASH) || defined(CONFIG_BLK_DEV_FLASH)
/* we need to initialize the Flashrom device here since we might

1
arch/blackfin/kernel/sys_bfin.c
View File

@ -29,7 +29,6 @@
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/sem.h>
#include <linux/msg.h>

34
arch/blackfin/kernel/traps.c
View File

@ -212,7 +212,7 @@ asmlinkage void double_fault_c(struct pt_regs *fp)
console_verbose();
oops_in_progress = 1;
#ifdef CONFIG_DEBUG_VERBOSE
printk(KERN_EMERG "\n" KERN_EMERG "Double Fault\n");
printk(KERN_EMERG "Double Fault\n");
#ifdef CONFIG_DEBUG_DOUBLEFAULT_PRINT
if (((long)fp->seqstat & SEQSTAT_EXCAUSE) == VEC_UNCOV) {
unsigned int cpu = smp_processor_id();
@ -583,15 +583,14 @@ asmlinkage void trap_c(struct pt_regs *fp)
#ifndef CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE
if (trapnr == VEC_CPLB_I_M || trapnr == VEC_CPLB_M)
verbose_printk(KERN_NOTICE "No trace since you do not have "
"CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE enabled\n"
KERN_NOTICE "\n");
"CONFIG_DEBUG_BFIN_NO_KERN_HWTRACE enabled\n\n");
else
#endif
dump_bfin_trace_buffer();
if (oops_in_progress) {
/* Dump the current kernel stack */
verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "Kernel Stack\n");
verbose_printk(KERN_NOTICE "Kernel Stack\n");
show_stack(current, NULL);
print_modules();
#ifndef CONFIG_ACCESS_CHECK
@ -906,7 +905,7 @@ void show_stack(struct task_struct *task, unsigned long *stack)
ret_addr = 0;
if (!j && i % 8 == 0)
printk("\n" KERN_NOTICE "%p:",addr);
printk(KERN_NOTICE "%p:",addr);
/* if it is an odd address, or zero, just skip it */
if (*addr & 0x1 || !*addr)
@ -996,9 +995,9 @@ void dump_bfin_process(struct pt_regs *fp)
printk(KERN_NOTICE "CPU = %d\n", current_thread_info()->cpu);
if (!((unsigned long)current->mm & 0x3) && (unsigned long)current->mm >= FIXED_CODE_START)
verbose_printk(KERN_NOTICE "TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n"
KERN_NOTICE " BSS = 0x%p-0x%p USER-STACK = 0x%p\n"
KERN_NOTICE "\n",
verbose_printk(KERN_NOTICE
"TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n"
" BSS = 0x%p-0x%p USER-STACK = 0x%p\n\n",
(void *)current->mm->start_code,
(void *)current->mm->end_code,
(void *)current->mm->start_data,
@ -1009,8 +1008,8 @@ void dump_bfin_process(struct pt_regs *fp)
else
verbose_printk(KERN_NOTICE "invalid mm\n");
} else
verbose_printk(KERN_NOTICE "\n" KERN_NOTICE
"No Valid process in current context\n");
verbose_printk(KERN_NOTICE
"No Valid process in current context\n");
#endif
}
@ -1028,7 +1027,7 @@ void dump_bfin_mem(struct pt_regs *fp)
addr < (unsigned short *)((unsigned long)erraddr & ~0xF) + 0x10;
addr++) {
if (!((unsigned long)addr & 0xF))
verbose_printk("\n" KERN_NOTICE "0x%p: ", addr);
verbose_printk(KERN_NOTICE "0x%p: ", addr);
if (!get_instruction(&val, addr)) {
val = 0;
@ -1056,9 +1055,9 @@ void dump_bfin_mem(struct pt_regs *fp)
oops_in_progress)){
verbose_printk(KERN_NOTICE "Looks like this was a deferred error - sorry\n");
#ifndef CONFIG_DEBUG_HWERR
verbose_printk(KERN_NOTICE "The remaining message may be meaningless\n"
KERN_NOTICE "You should enable CONFIG_DEBUG_HWERR to get a"
" better idea where it came from\n");
verbose_printk(KERN_NOTICE
"The remaining message may be meaningless\n"
"You should enable CONFIG_DEBUG_HWERR to get a better idea where it came from\n");
#else
/* If we are handling only one peripheral interrupt
* and current mm and pid are valid, and the last error
@ -1114,9 +1113,10 @@ void show_regs(struct pt_regs *fp)
verbose_printk(KERN_NOTICE "%s", linux_banner);
verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\t\t%s\n", print_tainted());
verbose_printk(KERN_NOTICE "\nSEQUENCER STATUS:\t\t%s\n",
print_tainted());
verbose_printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n",
(long)fp->seqstat, fp->ipend, fp->syscfg);
(long)fp->seqstat, fp->ipend, fp->syscfg);
if ((fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) {
verbose_printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n",
(fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14);
@ -1184,7 +1184,7 @@ unlock:
verbose_printk(KERN_NOTICE "ICPLB_FAULT_ADDR: %s\n", buf);
}
verbose_printk(KERN_NOTICE "\n" KERN_NOTICE "PROCESSOR STATE:\n");
verbose_printk(KERN_NOTICE "PROCESSOR STATE:\n");
verbose_printk(KERN_NOTICE " R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n",
fp->r0, fp->r1, fp->r2, fp->r3);
verbose_printk(KERN_NOTICE " R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n",

4
arch/cris/include/asm/thread_info.h
View File

@ -50,8 +50,6 @@ struct thread_info {
/*
* macros/functions for gaining access to the thread information structure
*
* preempt_count needs to be 1 initially, until the scheduler is functional.
*/
#ifndef __ASSEMBLY__
#define INIT_THREAD_INFO(tsk) \
@ -60,7 +58,7 @@ struct thread_info {
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.preempt_count = INIT_PREEMPT_COUNT, \
.addr_limit = KERNEL_DS, \
.restart_block = { \
.fn = do_no_restart_syscall, \

1
arch/cris/kernel/sys_cris.c
View File

@ -15,7 +15,6 @@
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>

1
arch/frv/Kconfig
View File

@ -7,6 +7,7 @@ config FRV
default y
select HAVE_IDE
select HAVE_ARCH_TRACEHOOK
select HAVE_PERF_COUNTERS
config ZONE_DMA
bool

68
arch/frv/include/asm/atomic.h
View File

@ -121,10 +121,72 @@ static inline void atomic_dec(atomic_t *v)
#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
/*
* 64-bit atomic ops
*/
typedef struct {
volatile long long counter;
} atomic64_t;
#define ATOMIC64_INIT(i) { (i) }
static inline long long atomic64_read(atomic64_t *v)
{
long long counter;
asm("ldd%I1 %M1,%0"
: "=e"(counter)
: "m"(v->counter));
return counter;
}
static inline void atomic64_set(atomic64_t *v, long long i)
{
asm volatile("std%I0 %1,%M0"
: "=m"(v->counter)
: "e"(i));
}
extern long long atomic64_inc_return(atomic64_t *v);
extern long long atomic64_dec_return(atomic64_t *v);
extern long long atomic64_add_return(long long i, atomic64_t *v);
extern long long atomic64_sub_return(long long i, atomic64_t *v);
static inline long long atomic64_add_negative(long long i, atomic64_t *v)
{
return atomic64_add_return(i, v) < 0;
}
static inline void atomic64_add(long long i, atomic64_t *v)
{
atomic64_add_return(i, v);
}
static inline void atomic64_sub(long long i, atomic64_t *v)
{
atomic64_sub_return(i, v);
}
static inline void atomic64_inc(atomic64_t *v)
{
atomic64_inc_return(v);
}
static inline void atomic64_dec(atomic64_t *v)
{
atomic64_dec_return(v);
}
#define atomic64_sub_and_test(i,v) (atomic64_sub_return((i), (v)) == 0)
#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
#define atomic64_inc_and_test(v) (atomic64_inc_return((v)) == 0)
/*****************************************************************************/
/*
* exchange value with memory
*/
extern uint64_t __xchg_64(uint64_t i, volatile void *v);
#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
#define xchg(ptr, x) \
@ -174,8 +236,10 @@ extern uint32_t __xchg_32(uint32_t i, volatile void *v);
#define tas(ptr) (xchg((ptr), 1))
#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), old, new))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_cmpxchg(v, old, new) (cmpxchg(&(v)->counter, old, new))
#define atomic_xchg(v, new) (xchg(&(v)->counter, new))
#define atomic64_cmpxchg(v, old, new) (__cmpxchg_64(old, new, &(v)->counter))
#define atomic64_xchg(v, new) (__xchg_64(new, &(v)->counter))
static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
{

17
arch/frv/include/asm/perf_counter.h Normal file
View File

@ -0,0 +1,17 @@
/* FRV performance counter support
*
* Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_PERF_COUNTER_H
#define _ASM_PERF_COUNTER_H
#define PERF_COUNTER_INDEX_OFFSET 0
#endif /* _ASM_PERF_COUNTER_H */

2
arch/frv/include/asm/system.h
View File

@ -208,6 +208,8 @@ extern void free_initmem(void);
* - if (*ptr == test) then orig = *ptr; *ptr = test;
* - if (*ptr != test) then orig = *ptr;
*/
extern uint64_t __cmpxchg_64(uint64_t test, uint64_t new, volatile uint64_t *v);
#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
#define cmpxchg(ptr, test, new) \

4
arch/frv/include/asm/thread_info.h
View File

@ -56,8 +56,6 @@ struct thread_info {
/*
* macros/functions for gaining access to the thread information structure
*
* preempt_count needs to be 1 initially, until the scheduler is functional.
*/
#ifndef __ASSEMBLY__
@ -67,7 +65,7 @@ struct thread_info {
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.preempt_count = INIT_PREEMPT_COUNT, \
.addr_limit = KERNEL_DS, \
.restart_block = { \
.fn = do_no_restart_syscall, \

4
arch/frv/include/asm/unistd.h
View File

@ -341,10 +341,12 @@
#define __NR_inotify_init1 332
#define __NR_preadv 333
#define __NR_pwritev 334
#define __NR_rt_tgsigqueueinfo 335
#define __NR_perf_counter_open 336
#ifdef __KERNEL__
#define NR_syscalls 335
#define NR_syscalls 337
#define __ARCH_WANT_IPC_PARSE_VERSION
/* #define __ARCH_WANT_OLD_READDIR */

2
arch/frv/kernel/entry.S
View File

@ -1524,5 +1524,7 @@ sys_call_table:
.long sys_inotify_init1
.long sys_preadv
.long sys_pwritev
.long sys_rt_tgsigqueueinfo /* 335 */
.long sys_perf_counter_open
syscall_table_size = (. - sys_call_table)

4
arch/frv/kernel/frv_ksyms.c
View File

@ -67,6 +67,10 @@ EXPORT_SYMBOL(atomic_sub_return);
EXPORT_SYMBOL(__xchg_32);
EXPORT_SYMBOL(__cmpxchg_32);
#endif
EXPORT_SYMBOL(atomic64_add_return);
EXPORT_SYMBOL(atomic64_sub_return);
EXPORT_SYMBOL(__xchg_64);
EXPORT_SYMBOL(__cmpxchg_64);
EXPORT_SYMBOL(__debug_bug_printk);
EXPORT_SYMBOL(__delay_loops_MHz);

4
arch/frv/lib/Makefile
View File

@ -4,5 +4,5 @@
lib-y := \
__ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \
checksum.o memcpy.o memset.o atomic-ops.o \
outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o
checksum.o memcpy.o memset.o atomic-ops.o atomic64-ops.o \
outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o perf_counter.o

3
arch/frv/lib/atomic-ops.S
View File

@ -163,11 +163,10 @@ __cmpxchg_32:
ld.p @(gr11,gr0),gr8
orcr cc7,cc7,cc3
subcc gr8,gr9,gr7,icc0
bne icc0,#0,1f
bnelr icc0,#0
cst.p gr10,@(gr11,gr0) ,cc3,#1
corcc gr29,gr29,gr0 ,cc3,#1
beq icc3,#0,0b
1:
bralr
.size __cmpxchg_32, .-__cmpxchg_32

162
arch/frv/lib/atomic64-ops.S Normal file
View File

@ -0,0 +1,162 @@
/* kernel atomic64 operations
*
* For an explanation of how atomic ops work in this arch, see:
* Documentation/frv/atomic-ops.txt
*
* Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* 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.
*/
#include <asm/spr-regs.h>
.text
.balign 4
###############################################################################
#
# long long atomic64_inc_return(atomic64_t *v)
#
###############################################################################
.globl atomic64_inc_return
.type atomic64_inc_return,@function
atomic64_inc_return:
or.p gr8,gr8,gr10
0:
orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
ckeq icc3,cc7
ldd.p @(gr10,gr0),gr8 /* LDD.P/ORCR must be atomic */
orcr cc7,cc7,cc3 /* set CC3 to true */
addicc gr9,#1,gr9,icc0
addxi gr8,#0,gr8,icc0
cstd.p gr8,@(gr10,gr0) ,cc3,#1
corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
beq icc3,#0,0b
bralr
.size atomic64_inc_return, .-atomic64_inc_return
###############################################################################
#
# long long atomic64_dec_return(atomic64_t *v)
#
###############################################################################
.globl atomic64_dec_return
.type atomic64_dec_return,@function
atomic64_dec_return:
or.p gr8,gr8,gr10
0:
orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
ckeq icc3,cc7
ldd.p @(gr10,gr0),gr8 /* LDD.P/ORCR must be atomic */
orcr cc7,cc7,cc3 /* set CC3 to true */
subicc gr9,#1,gr9,icc0
subxi gr8,#0,gr8,icc0
cstd.p gr8,@(gr10,gr0) ,cc3,#1
corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
beq icc3,#0,0b
bralr
.size atomic64_dec_return, .-atomic64_dec_return
###############################################################################
#
# long long atomic64_add_return(long long i, atomic64_t *v)
#
###############################################################################
.globl atomic64_add_return
.type atomic64_add_return,@function
atomic64_add_return:
or.p gr8,gr8,gr4
or gr9,gr9,gr5
0:
orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
ckeq icc3,cc7
ldd.p @(gr10,gr0),gr8 /* LDD.P/ORCR must be atomic */
orcr cc7,cc7,cc3 /* set CC3 to true */
addcc gr9,gr5,gr9,icc0
addx gr8,gr4,gr8,icc0
cstd.p gr8,@(gr10,gr0) ,cc3,#1
corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
beq icc3,#0,0b
bralr
.size atomic64_add_return, .-atomic64_add_return
###############################################################################
#
# long long atomic64_sub_return(long long i, atomic64_t *v)
#
###############################################################################
.globl atomic64_sub_return
.type atomic64_sub_return,@function
atomic64_sub_return:
or.p gr8,gr8,gr4
or gr9,gr9,gr5
0:
orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
ckeq icc3,cc7
ldd.p @(gr10,gr0),gr8 /* LDD.P/ORCR must be atomic */
orcr cc7,cc7,cc3 /* set CC3 to true */
subcc gr9,gr5,gr9,icc0
subx gr8,gr4,gr8,icc0
cstd.p gr8,@(gr10,gr0) ,cc3,#1
corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
beq icc3,#0,0b
bralr
.size atomic64_sub_return, .-atomic64_sub_return
###############################################################################
#
# uint64_t __xchg_64(uint64_t i, uint64_t *v)
#
###############################################################################
.globl __xchg_64
.type __xchg_64,@function
__xchg_64:
or.p gr8,gr8,gr4
or gr9,gr9,gr5
0:
orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
ckeq icc3,cc7
ldd.p @(gr10,gr0),gr8 /* LDD.P/ORCR must be atomic */
orcr cc7,cc7,cc3 /* set CC3 to true */
cstd.p gr4,@(gr10,gr0) ,cc3,#1
corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
beq icc3,#0,0b
bralr
.size __xchg_64, .-__xchg_64
###############################################################################
#
# uint64_t __cmpxchg_64(uint64_t test, uint64_t new, uint64_t *v)
#
###############################################################################
.globl __cmpxchg_64
.type __cmpxchg_64,@function
__cmpxchg_64:
or.p gr8,gr8,gr4
or gr9,gr9,gr5
0:
orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
ckeq icc3,cc7
ldd.p @(gr12,gr0),gr8 /* LDD.P/ORCR must be atomic */
orcr cc7,cc7,cc3
subcc gr8,gr4,gr0,icc0
subcc.p gr9,gr5,gr0,icc1
bnelr icc0,#0
bnelr icc1,#0
cstd.p gr10,@(gr12,gr0) ,cc3,#1
corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
beq icc3,#0,0b
bralr
.size __cmpxchg_64, .-__cmpxchg_64

19
arch/frv/lib/perf_counter.c Normal file
View File

@ -0,0 +1,19 @@
/* Performance counter handling
*
* Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#include <linux/perf_counter.h>
/*
* mark the performance counter as pending
*/
void set_perf_counter_pending(void)
{
}

2
arch/h8300/include/asm/thread_info.h
View File

@ -36,7 +36,7 @@ struct thread_info {
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.preempt_count = INIT_PREEMPT_COUNT, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \

2
arch/ia64/include/asm/fpu.h
View File

@ -6,6 +6,8 @@
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#include <linux/types.h>
/* floating point status register: */
#define FPSR_TRAP_VD (1 << 0) /* invalid op trap disabled */
#define FPSR_TRAP_DD (1 << 1) /* denormal trap disabled */

2
arch/ia64/include/asm/thread_info.h
View File

@ -48,7 +48,7 @@ struct thread_info {
.flags = 0, \
.cpu = 0, \
.addr_limit = KERNEL_DS, \
.preempt_count = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \

1
arch/ia64/include/asm/xen/hypervisor.h
View File

@ -33,6 +33,7 @@
#ifndef _ASM_IA64_XEN_HYPERVISOR_H
#define _ASM_IA64_XEN_HYPERVISOR_H
#include <linux/err.h>
#include <xen/interface/xen.h>
#include <xen/interface/version.h> /* to compile feature.c */
#include <xen/features.h> /* to comiple xen-netfront.c */

12
arch/ia64/kernel/acpi-processor.c
View File

@ -71,3 +71,15 @@ void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
}
EXPORT_SYMBOL(arch_acpi_processor_init_pdc);
void arch_acpi_processor_cleanup_pdc(struct acpi_processor *pr)
{
if (pr->pdc) {
kfree(pr->pdc->pointer->buffer.pointer);
kfree(pr->pdc->pointer);
kfree(pr->pdc);
pr->pdc = NULL;
}
}
EXPORT_SYMBOL(arch_acpi_processor_cleanup_pdc);

8
arch/ia64/kernel/dma-mapping.c
View File

@ -6,6 +6,14 @@ int iommu_detected __read_mostly;
struct dma_map_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);
#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
static int __init dma_init(void)
{
dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
}
fs_initcall(dma_init);
struct dma_map_ops *dma_get_ops(struct device *dev)
{
return dma_ops;

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