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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

This commit is contained in:
David Woodhouse 2008-07-11 14:36:25 +01:00
parent 90574d0a4d e5a5816f78
commit a8931ef380
2978 changed files with 84192 additions and 38287 deletions
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13
.gitignore vendored
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@ -3,6 +3,10 @@
# subdirectories here. Add them in the ".gitignore" file
# in that subdirectory instead.
#
# NOTE! Please use 'git-ls-files -i --exclude-standard'
# command after changing this file, to see if there are
# any tracked files which get ignored after the change.
#
# Normal rules
#
.*
@ -18,18 +22,21 @@
*.lst
*.symtypes
*.order
*.elf
*.bin
*.gz
#
# Top-level generic files
#
tags
TAGS
vmlinux*
!vmlinux.lds.S
vmlinux
System.map
Module.markers
Module.symvers
!.gitignore
!.mailmap
#
# Generated include files
@ -52,8 +59,8 @@ series
# cscope files
cscope.*
ncscope.*
*.orig
*.rej
*~
\#*#

5
CREDITS
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@ -2611,8 +2611,9 @@ S: Perth, Western Australia
S: Australia
N: Miguel Ojeda Sandonis
E: maxextreme@gmail.com
W: http://maxextreme.googlepages.com/
E: miguel.ojeda.sandonis@gmail.com
W: http://miguelojeda.es
W: http://jair.lab.fi.uva.es/~migojed/
D: Author of the ks0108, cfag12864b and cfag12864bfb auxiliary display drivers.
D: Maintainer of the auxiliary display drivers tree (drivers/auxdisplay/*)
S: C/ Mieses 20, 9-B

4
Documentation/ABI/testing/sysfs-class-bdi
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@ -14,6 +14,10 @@ MAJOR:MINOR
non-block filesystems which provide their own BDI, such as NFS
and FUSE.
MAJOR:MINOR-fuseblk
Value of st_dev on fuseblk filesystems.
default
The default backing dev, used for non-block device backed

25
Documentation/DocBook/kernel-locking.tmpl
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@ -703,6 +703,31 @@
</sect1>
</chapter>
<chapter id="trylock-functions">
<title>The trylock Functions</title>
<para>
There are functions that try to acquire a lock only once and immediately
return a value telling about success or failure to acquire the lock.
They can be used if you need no access to the data protected with the lock
when some other thread is holding the lock. You should acquire the lock
later if you then need access to the data protected with the lock.
</para>
<para>
<function>spin_trylock()</function> does not spin but returns non-zero if
it acquires the spinlock on the first try or 0 if not. This function can
be used in all contexts like <function>spin_lock</function>: you must have
disabled the contexts that might interrupt you and acquire the spin lock.
</para>
<para>
<function>mutex_trylock()</function> does not suspend your task
but returns non-zero if it could lock the mutex on the first try
or 0 if not. This function cannot be safely used in hardware or software
interrupt contexts despite not sleeping.
</para>
</chapter>
<chapter id="Examples">
<title>Common Examples</title>
<para>

28
Documentation/DocBook/kgdb.tmpl
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@ -72,7 +72,7 @@
kgdb is a source level debugger for linux kernel. It is used along
with gdb to debug a linux kernel. The expectation is that gdb can
be used to "break in" to the kernel to inspect memory, variables
and look through a cal stack information similar to what an
and look through call stack information similar to what an
application developer would use gdb for. It is possible to place
breakpoints in kernel code and perform some limited execution
stepping.
@ -84,17 +84,18 @@
runs an instance of gdb against the vmlinux file which contains
the symbols (not boot image such as bzImage, zImage, uImage...).
In gdb the developer specifies the connection parameters and
connects to kgdb. Depending on which kgdb I/O modules exist in
the kernel for a given architecture, it may be possible to debug
the test machine's kernel with the development machine using a
rs232 or ethernet connection.
connects to kgdb. The type of connection a developer makes with
gdb depends on the availability of kgdb I/O modules compiled as
builtin's or kernel modules in the test machine's kernel.
</para>
</chapter>
<chapter id="CompilingAKernel">
<title>Compiling a kernel</title>
<para>
To enable <symbol>CONFIG_KGDB</symbol>, look under the "Kernel debugging"
and then select "KGDB: kernel debugging with remote gdb".
To enable <symbol>CONFIG_KGDB</symbol> you should first turn on
"Prompt for development and/or incomplete code/drivers"
(CONFIG_EXPERIMENTAL) in "General setup", then under the
"Kernel debugging" select "KGDB: kernel debugging with remote gdb".
</para>
<para>
Next you should choose one of more I/O drivers to interconnect debugging
@ -221,7 +222,7 @@
</para>
<para>
IMPORTANT NOTE: Using this option with kgdb over the console
(kgdboc) or kgdb over ethernet (kgdboe) is not supported.
(kgdboc) is not supported.
</para>
</sect1>
</chapter>
@ -247,18 +248,11 @@
(gdb) target remote /dev/ttyS0
</programlisting>
<para>
Example (kgdb to a terminal server):
Example (kgdb to a terminal server on tcp port 2012):
</para>
<programlisting>
% gdb ./vmlinux
(gdb) target remote udp:192.168.2.2:6443
</programlisting>
<para>
Example (kgdb over ethernet):
</para>
<programlisting>
% gdb ./vmlinux
(gdb) target remote udp:192.168.2.2:6443
(gdb) target remote 192.168.2.2:2012
</programlisting>
<para>
Once connected, you can debug a kernel the way you would debug an

46
Documentation/SubmittingPatches
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@ -327,6 +327,52 @@ Some people also put extra tags at the end. They'll just be ignored for
now, but you can do this to mark internal company procedures or just
point out some special detail about the sign-off.
If you are a subsystem or branch maintainer, sometimes you need to slightly
modify patches you receive in order to merge them, because the code is not
exactly the same in your tree and the submitters'. If you stick strictly to
rule (c), you should ask the submitter to rediff, but this is a totally
counter-productive waste of time and energy. Rule (b) allows you to adjust
the code, but then it is very impolite to change one submitter's code and
make him endorse your bugs. To solve this problem, it is recommended that
you add a line between the last Signed-off-by header and yours, indicating
the nature of your changes. While there is nothing mandatory about this, it
seems like prepending the description with your mail and/or name, all
enclosed in square brackets, is noticeable enough to make it obvious that
you are responsible for last-minute changes. Example :
Signed-off-by: Random J Developer <random@developer.example.org>
[lucky@maintainer.example.org: struct foo moved from foo.c to foo.h]
Signed-off-by: Lucky K Maintainer <lucky@maintainer.example.org>
This practise is particularly helpful if you maintain a stable branch and
want at the same time to credit the author, track changes, merge the fix,
and protect the submitter from complaints. Note that under no circumstances
can you change the author's identity (the From header), as it is the one
which appears in the changelog.
Special note to back-porters: It seems to be a common and useful practise
to insert an indication of the origin of a patch at the top of the commit
message (just after the subject line) to facilitate tracking. For instance,
here's what we see in 2.6-stable :
Date: Tue May 13 19:10:30 2008 +0000
SCSI: libiscsi regression in 2.6.25: fix nop timer handling
commit 4cf1043593db6a337f10e006c23c69e5fc93e722 upstream
And here's what appears in 2.4 :
Date: Tue May 13 22:12:27 2008 +0200
wireless, airo: waitbusy() won't delay
[backport of 2.6 commit b7acbdfbd1f277c1eb23f344f899cfa4cd0bf36a]
Whatever the format, this information provides a valuable help to people
tracking your trees, and to people trying to trouble-shoot bugs in your
tree.
13) When to use Acked-by: and Cc:

6
Documentation/accounting/taskstats-struct.txt
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@ -24,6 +24,8 @@ There are three different groups of fields in the struct taskstats:
4) Per-task and per-thread context switch count statistics
5) Time accounting for SMT machines
Future extension should add fields to the end of the taskstats struct, and
should not change the relative position of each field within the struct.
@ -164,4 +166,8 @@ struct taskstats {
__u64 nvcsw; /* Context voluntary switch counter */
__u64 nivcsw; /* Context involuntary switch counter */
5) Time accounting for SMT machines
__u64 ac_utimescaled; /* utime scaled on frequency etc */
__u64 ac_stimescaled; /* stime scaled on frequency etc */
__u64 cpu_scaled_run_real_total; /* scaled cpu_run_real_total */
}

4
Documentation/auxdisplay/cfag12864b
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@ -3,7 +3,7 @@
===================================
License: GPLv2
Author & Maintainer: Miguel Ojeda Sandonis <maxextreme@gmail.com>
Author & Maintainer: Miguel Ojeda Sandonis
Date: 2006-10-27
@ -22,7 +22,7 @@ Date: 2006-10-27
1. DRIVER INFORMATION
---------------------
This driver support one cfag12864b display at time.
This driver supports a cfag12864b LCD.
---------------------

2
Documentation/auxdisplay/cfag12864b-example.c
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@ -4,7 +4,7 @@
* Description: cfag12864b LCD userspace example program
* License: GPLv2
*
* Author: Copyright (C) Miguel Ojeda Sandonis <maxextreme@gmail.com>
* Author: Copyright (C) Miguel Ojeda Sandonis
* Date: 2006-10-31
*
* This program is free software; you can redistribute it and/or modify

4
Documentation/auxdisplay/ks0108
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@ -3,7 +3,7 @@
==========================================
License: GPLv2
Author & Maintainer: Miguel Ojeda Sandonis <maxextreme@gmail.com>
Author & Maintainer: Miguel Ojeda Sandonis
Date: 2006-10-27
@ -21,7 +21,7 @@ Date: 2006-10-27
1. DRIVER INFORMATION
---------------------
This driver support the ks0108 LCD controller.
This driver supports the ks0108 LCD controller.
---------------------

5
Documentation/cciss.txt
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@ -21,6 +21,11 @@ This driver is known to work with the following cards:
* SA E200
* SA E200i
* SA E500
* SA P212
* SA P410
* SA P410i
* SA P411
* SA P812
Detecting drive failures:
-------------------------

8
Documentation/cgroups.txt
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@ -310,8 +310,8 @@ and then start a subshell 'sh' in that cgroup:
cd /dev/cgroup
mkdir Charlie
cd Charlie
/bin/echo 2-3 > cpus
/bin/echo 1 > mems
/bin/echo 2-3 > cpuset.cpus
/bin/echo 1 > cpuset.mems
/bin/echo $$ > tasks
sh
# The subshell 'sh' is now running in cgroup Charlie
@ -390,6 +390,10 @@ If you have several tasks to attach, you have to do it one after another:
...
# /bin/echo PIDn > tasks
You can attach the current shell task by echoing 0:
# echo 0 > tasks
3. Kernel API
=============

8
Documentation/controllers/devices.txt
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@ -13,7 +13,7 @@ either an integer or * for all. Access is a composition of r
The root device cgroup starts with rwm to 'all'. A child device
cgroup gets a copy of the parent. Administrators can then remove
devices from the whitelist or add new entries. A child cgroup can
never receive a device access which is denied its parent. However
never receive a device access which is denied by its parent. However
when a device access is removed from a parent it will not also be
removed from the child(ren).
@ -29,7 +29,11 @@ allows cgroup 1 to read and mknod the device usually known as
echo a > /cgroups/1/devices.deny
will remove the default 'a *:* mrw' entry.
will remove the default 'a *:* rwm' entry. Doing
echo a > /cgroups/1/devices.allow
will add the 'a *:* rwm' entry to the whitelist.
3. Security

8
Documentation/cpu-freq/governors.txt
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@ -129,14 +129,6 @@ to its default value of '80' it means that between the checking
intervals the CPU needs to be on average more than 80% in use to then
decide that the CPU frequency needs to be increased.
sampling_down_factor: this parameter controls the rate that the CPU
makes a decision on when to decrease the frequency. When set to its
default value of '5' it means that at 1/5 the sampling_rate the kernel
makes a decision to lower the frequency. Five "lower rate" decisions
have to be made in a row before the CPU frequency is actually lower.
If set to '1' then the frequency decreases as quickly as it increases,
if set to '2' it decreases at half the rate of the increase.
ignore_nice_load: this parameter takes a value of '0' or '1'. When
set to '0' (its default), all processes are counted towards the
'cpu utilisation' value. When set to '1', the processes that are

20
Documentation/cpusets.txt
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@ -154,13 +154,15 @@ browsing and modifying the cpusets presently known to the kernel. No
new system calls are added for cpusets - all support for querying and
modifying cpusets is via this cpuset file system.
The /proc/<pid>/status file for each task has two added lines,
The /proc/<pid>/status file for each task has four added lines,
displaying the tasks cpus_allowed (on which CPUs it may be scheduled)
and mems_allowed (on which Memory Nodes it may obtain memory),
in the format seen in the following example:
in the two formats seen in the following example:
Cpus_allowed: ffffffff,ffffffff,ffffffff,ffffffff
Cpus_allowed_list: 0-127
Mems_allowed: ffffffff,ffffffff
Mems_allowed_list: 0-63
Each cpuset is represented by a directory in the cgroup file system
containing (on top of the standard cgroup files) the following
@ -199,7 +201,7 @@ using the sched_setaffinity, mbind and set_mempolicy system calls.
The following rules apply to each cpuset:
- Its CPUs and Memory Nodes must be a subset of its parents.
- It can only be marked exclusive if its parent is.
- It can't be marked exclusive unless its parent is.
- If its cpu or memory is exclusive, they may not overlap any sibling.
These rules, and the natural hierarchy of cpusets, enable efficient
@ -345,7 +347,7 @@ is modified to perform an inline check for this PF_SPREAD_PAGE task
flag, and if set, a call to a new routine cpuset_mem_spread_node()
returns the node to prefer for the allocation.
Similarly, setting 'memory_spread_cache' turns on the flag
Similarly, setting 'memory_spread_slab' turns on the flag
PF_SPREAD_SLAB, and appropriately marked slab caches will allocate
pages from the node returned by cpuset_mem_spread_node().
@ -542,7 +544,10 @@ otherwise initial value -1 that indicates the cpuset has no request.
2 : search cores in a package.
3 : search cpus in a node [= system wide on non-NUMA system]
( 4 : search nodes in a chunk of node [on NUMA system] )
( 5~ : search system wide [on NUMA system])
( 5 : search system wide [on NUMA system] )
The system default is architecture dependent. The system default
can be changed using the relax_domain_level= boot parameter.
This file is per-cpuset and affect the sched domain where the cpuset
belongs to. Therefore if the flag 'sched_load_balance' of a cpuset
@ -709,7 +714,10 @@ Now you want to do something with this cpuset.
In this directory you can find several files:
# ls
cpus cpu_exclusive mems mem_exclusive mem_hardwall tasks
cpu_exclusive memory_migrate mems tasks
cpus memory_pressure notify_on_release
mem_exclusive memory_spread_page sched_load_balance
mem_hardwall memory_spread_slab sched_relax_domain_level
Reading them will give you information about the state of this cpuset:
the CPUs and Memory Nodes it can use, the processes that are using

17
Documentation/feature-removal-schedule.txt
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@ -289,6 +289,14 @@ Who: Glauber Costa <gcosta@redhat.com>
---------------------------
What: old style serial driver for ColdFire (CONFIG_SERIAL_COLDFIRE)
When: 2.6.28
Why: This driver still uses the old interface and has been replaced
by CONFIG_SERIAL_MCF.
Who: Sebastian Siewior <sebastian@breakpoint.cc>
---------------------------
What: /sys/o2cb symlink
When: January 2010
Why: /sys/fs/o2cb is the proper location for this information - /sys/o2cb
@ -304,3 +312,12 @@ When: 2.6.26
Why: Implementation became generic; users should now include
linux/semaphore.h instead.
Who: Matthew Wilcox <willy@linux.intel.com>
---------------------------
What: CONFIG_THERMAL_HWMON
When: January 2009
Why: This option was introduced just to allow older lm-sensors userspace
to keep working over the upgrade to 2.6.26. At the scheduled time of
removal fixed lm-sensors (2.x or 3.x) should be readily available.
Who: Rene Herman <rene.herman@gmail.com>

2
Documentation/filesystems/Locking
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@ -92,7 +92,6 @@ prototypes:
void (*destroy_inode)(struct inode *);
void (*dirty_inode) (struct inode *);
int (*write_inode) (struct inode *, int);
void (*put_inode) (struct inode *);
void (*drop_inode) (struct inode *);
void (*delete_inode) (struct inode *);
void (*put_super) (struct super_block *);
@ -115,7 +114,6 @@ alloc_inode: no no no
destroy_inode: no
dirty_inode: no (must not sleep)
write_inode: no
put_inode: no
drop_inode: no !!!inode_lock!!!
delete_inode: no
put_super: yes yes no

12
Documentation/filesystems/ext4.txt
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@ -139,8 +139,16 @@ commit=nrsec (*) Ext4 can be told to sync all its data and metadata
Setting it to very large values will improve
performance.
barrier=1 This enables/disables barriers. barrier=0 disables
it, barrier=1 enables it.
barrier=<0|1(*)> This enables/disables the use of write barriers in
the jbd code. barrier=0 disables, barrier=1 enables.
This also requires an IO stack which can support
barriers, and if jbd gets an error on a barrier
write, it will disable again with a warning.
Write barriers enforce proper on-disk ordering
of journal commits, making volatile disk write caches
safe to use, at some performance penalty. If
your disks are battery-backed in one way or another,
disabling barriers may safely improve performance.
orlov (*) This enables the new Orlov block allocator. It is
enabled by default.

1
Documentation/filesystems/sysfs-pci.txt
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@ -36,6 +36,7 @@ files, each with their own function.
local_cpus nearby CPU mask (cpumask, ro)
resource PCI resource host addresses (ascii, ro)
resource0..N PCI resource N, if present (binary, mmap)
resource0_wc..N_wc PCI WC map resource N, if prefetchable (binary, mmap)
rom PCI ROM resource, if present (binary, ro)
subsystem_device PCI subsystem device (ascii, ro)
subsystem_vendor PCI subsystem vendor (ascii, ro)

4
Documentation/filesystems/vfs.txt
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@ -205,7 +205,6 @@ struct super_operations {
void (*dirty_inode) (struct inode *);
int (*write_inode) (struct inode *, int);
void (*put_inode) (struct inode *);
void (*drop_inode) (struct inode *);
void (*delete_inode) (struct inode *);
void (*put_super) (struct super_block *);
@ -246,9 +245,6 @@ or bottom half).
inode to disc. The second parameter indicates whether the write
should be synchronous or not, not all filesystems check this flag.
put_inode: called when the VFS inode is removed from the inode
cache.
drop_inode: called when the last access to the inode is dropped,
with the inode_lock spinlock held.

1353
Documentation/ftrace.txt Normal file
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3
Documentation/hwmon/adt7473
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@ -69,7 +69,8 @@ point2: Set the pwm speed at a higher temperature bound.
The ADT7473 will scale the pwm between the lower and higher pwm speed when
the temperature is between the two temperature boundaries. PWM values range
from 0 (off) to 255 (full speed).
from 0 (off) to 255 (full speed). Fan speed will be set to maximum when the
temperature sensor associated with the PWM control exceeds temp#_max.
Notes
-----

37
Documentation/hwmon/ibmaem Normal file
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@ -0,0 +1,37 @@
Kernel driver ibmaem
======================
Supported systems:
* Any recent IBM System X server with Active Energy Manager support.
This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2,
x3950 M2, and certain HS2x/LS2x/QS2x blades. The IPMI host interface
driver ("ipmi-si") needs to be loaded for this driver to do anything.
Prefix: 'ibmaem'
Datasheet: Not available
Author: Darrick J. Wong
Description
-----------
This driver implements sensor reading support for the energy and power
meters available on various IBM System X hardware through the BMC. All
sensor banks will be exported as platform devices; this driver can talk
to both v1 and v2 interfaces. This driver is completely separate from the
older ibmpex driver.
The v1 AEM interface has a simple set of features to monitor energy use.
There is a register that displays an estimate of raw energy consumption
since the last BMC reset, and a power sensor that returns average power
use over a configurable interval.
The v2 AEM interface is a bit more sophisticated, being able to present
a wider range of energy and power use registers, the power cap as
set by the AEM software, and temperature sensors.
Special Features
----------------
The "power_cap" value displays the current system power cap, as set by
the Active Energy Manager software. Setting the power cap from the host
is not currently supported.

33
Documentation/hwmon/sysfs-interface
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@ -2,17 +2,12 @@ Naming and data format standards for sysfs files
------------------------------------------------
The libsensors library offers an interface to the raw sensors data
through the sysfs interface. See libsensors documentation and source for
further information. As of writing this document, libsensors
(from lm_sensors 2.8.3) is heavily chip-dependent. Adding or updating
support for any given chip requires modifying the library's code.
This is because libsensors was written for the procfs interface
older kernel modules were using, which wasn't standardized enough.
Recent versions of libsensors (from lm_sensors 2.8.2 and later) have
support for the sysfs interface, though.
The new sysfs interface was designed to be as chip-independent as
possible.
through the sysfs interface. Since lm-sensors 3.0.0, libsensors is
completely chip-independent. It assumes that all the kernel drivers
implement the standard sysfs interface described in this document.
This makes adding or updating support for any given chip very easy, as
libsensors, and applications using it, do not need to be modified.
This is a major improvement compared to lm-sensors 2.
Note that motherboards vary widely in the connections to sensor chips.
There is no standard that ensures, for example, that the second
@ -35,19 +30,17 @@ access this data in a simple and consistent way. That said, such programs
will have to implement conversion, labeling and hiding of inputs. For
this reason, it is still not recommended to bypass the library.
If you are developing a userspace application please send us feedback on
this standard.
Note that this standard isn't completely established yet, so it is subject
to changes. If you are writing a new hardware monitoring driver those
features can't seem to fit in this interface, please contact us with your
extension proposal. Keep in mind that backward compatibility must be
preserved.
Each chip gets its own directory in the sysfs /sys/devices tree. To
find all sensor chips, it is easier to follow the device symlinks from
/sys/class/hwmon/hwmon*.
Up to lm-sensors 3.0.0, libsensors looks for hardware monitoring attributes
in the "physical" device directory. Since lm-sensors 3.0.1, attributes found
in the hwmon "class" device directory are also supported. Complex drivers
(e.g. drivers for multifunction chips) may want to use this possibility to
avoid namespace pollution. The only drawback will be that older versions of
libsensors won't support the driver in question.
All sysfs values are fixed point numbers.
There is only one value per file, unlike the older /proc specification.

99
Documentation/i2c/functionality
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@ -51,26 +51,38 @@ A few combinations of the above flags are also defined for your convenience:
the transparent emulation layer)
ALGORITHM/ADAPTER IMPLEMENTATION
--------------------------------
ADAPTER IMPLEMENTATION
----------------------
When you write a new algorithm driver, you will have to implement a
function callback `functionality', that gets an i2c_adapter structure
pointer as its only parameter:
When you write a new adapter driver, you will have to implement a
function callback `functionality'. Typical implementations are given
below.
struct i2c_algorithm {
/* Many other things of course; check <linux/i2c.h>! */
u32 (*functionality) (struct i2c_adapter *);
}
A typical SMBus-only adapter would list all the SMBus transactions it
supports. This example comes from the i2c-piix4 driver:
A typically implementation is given below, from i2c-algo-bit.c:
static u32 bit_func(struct i2c_adapter *adap)
static u32 piix4_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR |
I2C_FUNC_PROTOCOL_MANGLING;
return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA;
}
A typical full-I2C adapter would use the following (from the i2c-pxa
driver):
static u32 i2c_pxa_functionality(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}
I2C_FUNC_SMBUS_EMUL includes all the SMBus transactions (with the
addition of I2C block transactions) which i2c-core can emulate using
I2C_FUNC_I2C without any help from the adapter driver. The idea is
to let the client drivers check for the support of SMBus functions
without having to care whether the said functions are implemented in
hardware by the adapter, or emulated in software by i2c-core on top
of an I2C adapter.
CLIENT CHECKING
@ -78,36 +90,33 @@ CLIENT CHECKING
Before a client tries to attach to an adapter, or even do tests to check
whether one of the devices it supports is present on an adapter, it should
check whether the needed functionality is present. There are two functions
defined which should be used instead of calling the functionality hook
in the algorithm structure directly:
check whether the needed functionality is present. The typical way to do
this is (from the lm75 driver):
/* Return the functionality mask */
extern u32 i2c_get_functionality (struct i2c_adapter *adap);
/* Return 1 if adapter supports everything we need, 0 if not. */
extern int i2c_check_functionality (struct i2c_adapter *adap, u32 func);
This is a typical way to use these functions (from the writing-clients
document):
int foo_detect_client(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind)
static int lm75_detect(...)
{
/* Define needed variables */
/* As the very first action, we check whether the adapter has the
needed functionality: we need the SMBus read_word_data,
write_word_data and write_byte functions in this example. */
if (!i2c_check_functionality(adapter,I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_WRITE_BYTE))
goto ERROR0;
/* Now we can do the real detection */
ERROR0:
/* Return an error */
(...)
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA))
goto exit;
(...)
}
Here, the lm75 driver checks if the adapter can do both SMBus byte data
and SMBus word data transactions. If not, then the driver won't work on
this adapter and there's no point in going on. If the check above is
successful, then the driver knows that it can call the following
functions: i2c_smbus_read_byte_data(), i2c_smbus_write_byte_data(),
i2c_smbus_read_word_data() and i2c_smbus_write_word_data(). As a rule of
thumb, the functionality constants you test for with
i2c_check_functionality() should match exactly the i2c_smbus_* functions
which you driver is calling.
Note that the check above doesn't tell whether the functionalities are
implemented in hardware by the underlying adapter or emulated in
software by i2c-core. Client drivers don't have to care about this, as
i2c-core will transparently implement SMBus transactions on top of I2C
adapters.
CHECKING THROUGH /DEV
@ -116,19 +125,19 @@ CHECKING THROUGH /DEV
If you try to access an adapter from a userspace program, you will have
to use the /dev interface. You will still have to check whether the
functionality you need is supported, of course. This is done using
the I2C_FUNCS ioctl. An example, adapted from the lm_sensors i2cdetect
program, is below:
the I2C_FUNCS ioctl. An example, adapted from the i2cdetect program, is
below:
int file;
if (file = open("/dev/i2c-0",O_RDWR) < 0) {
if (file = open("/dev/i2c-0", O_RDWR) < 0) {
/* Some kind of error handling */
exit(1);
}
if (ioctl(file,I2C_FUNCS,&funcs) < 0) {
if (ioctl(file, I2C_FUNCS, &funcs) < 0) {
/* Some kind of error handling */
exit(1);
}
if (! (funcs & I2C_FUNC_SMBUS_QUICK)) {
if (!(funcs & I2C_FUNC_SMBUS_QUICK)) {
/* Oops, the needed functionality (SMBus write_quick function) is
not available! */
exit(1);

81
Documentation/i2c/smbus-protocol
View File

@ -1,5 +1,6 @@
SMBus Protocol Summary
======================
The following is a summary of the SMBus protocol. It applies to
all revisions of the protocol (1.0, 1.1, and 2.0).
Certain protocol features which are not supported by
@ -8,6 +9,7 @@ this package are briefly described at the end of this document.
Some adapters understand only the SMBus (System Management Bus) protocol,
which is a subset from the I2C protocol. Fortunately, many devices use
only the same subset, which makes it possible to put them on an SMBus.
If you write a driver for some I2C device, please try to use the SMBus
commands if at all possible (if the device uses only that subset of the
I2C protocol). This makes it possible to use the device driver on both
@ -15,7 +17,12 @@ SMBus adapters and I2C adapters (the SMBus command set is automatically
translated to I2C on I2C adapters, but plain I2C commands can not be
handled at all on most pure SMBus adapters).
Below is a list of SMBus commands.
Below is a list of SMBus protocol operations, and the functions executing
them. Note that the names used in the SMBus protocol specifications usually
don't match these function names. For some of the operations which pass a
single data byte, the functions using SMBus protocol operation names execute
a different protocol operation entirely.
Key to symbols
==============
@ -35,17 +42,16 @@ Count (8 bits): A data byte containing the length of a block operation.
[..]: Data sent by I2C device, as opposed to data sent by the host adapter.
SMBus Write Quick
=================
SMBus Quick Command: i2c_smbus_write_quick()
=============================================
This sends a single bit to the device, at the place of the Rd/Wr bit.
There is no equivalent Read Quick command.
A Addr Rd/Wr [A] P
SMBus Read Byte
===============
SMBus Receive Byte: i2c_smbus_read_byte()
==========================================
This reads a single byte from a device, without specifying a device
register. Some devices are so simple that this interface is enough; for
@ -55,17 +61,17 @@ the previous SMBus command.
S Addr Rd [A] [Data] NA P
SMBus Write Byte
================
SMBus Send Byte: i2c_smbus_write_byte()
========================================
This is the reverse of Read Byte: it sends a single byte to a device.
See Read Byte for more information.
This operation is the reverse of Receive Byte: it sends a single byte
to a device. See Receive Byte for more information.
S Addr Wr [A] Data [A] P
SMBus Read Byte Data
====================
SMBus Read Byte: i2c_smbus_read_byte_data()
============================================
This reads a single byte from a device, from a designated register.
The register is specified through the Comm byte.
@ -73,30 +79,30 @@ The register is specified through the Comm byte.
S Addr Wr [A] Comm [A] S Addr Rd [A] [Data] NA P
SMBus Read Word Data
====================
SMBus Read Word: i2c_smbus_read_word_data()
============================================
This command is very like Read Byte Data; again, data is read from a
This operation is very like Read Byte; again, data is read from a
device, from a designated register that is specified through the Comm
byte. But this time, the data is a complete word (16 bits).
S Addr Wr [A] Comm [A] S Addr Rd [A] [DataLow] A [DataHigh] NA P
SMBus Write Byte Data
=====================
SMBus Write Byte: i2c_smbus_write_byte_data()
==============================================
This writes a single byte to a device, to a designated register. The
register is specified through the Comm byte. This is the opposite of
the Read Byte Data command.
the Read Byte operation.
S Addr Wr [A] Comm [A] Data [A] P
SMBus Write Word Data
=====================
SMBus Write Word: i2c_smbus_write_word_data()
==============================================
This is the opposite operation of the Read Word Data command. 16 bits
This is the opposite of the Read Word operation. 16 bits
of data is written to a device, to the designated register that is
specified through the Comm byte.
@ -113,8 +119,8 @@ S Addr Wr [A] Comm [A] DataLow [A] DataHigh [A]
S Addr Rd [A] [DataLow] A [DataHigh] NA P
SMBus Block Read
================
SMBus Block Read: i2c_smbus_read_block_data()
==============================================
This command reads a block of up to 32 bytes from a device, from a
designated register that is specified through the Comm byte. The amount
@ -124,8 +130,8 @@ S Addr Wr [A] Comm [A]
S Addr Rd [A] [Count] A [Data] A [Data] A ... A [Data] NA P
SMBus Block Write
=================
SMBus Block Write: i2c_smbus_write_block_data()
================================================
The opposite of the Block Read command, this writes up to 32 bytes to
a device, to a designated register that is specified through the
@ -134,10 +140,11 @@ Comm byte. The amount of data is specified in the Count byte.
S Addr Wr [A] Comm [A] Count [A] Data [A] Data [A] ... [A] Data [A] P
SMBus Block Process Call
========================
SMBus Block Write - Block Read Process Call
===========================================
SMBus Block Process Call was introduced in Revision 2.0 of the specification.
SMBus Block Write - Block Read Process Call was introduced in
Revision 2.0 of the specification.
This command selects a device register (through the Comm byte), sends
1 to 31 bytes of data to it, and reads 1 to 31 bytes of data in return.
@ -159,13 +166,16 @@ alerting device's address.
Packet Error Checking (PEC)
===========================
Packet Error Checking was introduced in Revision 1.1 of the specification.
PEC adds a CRC-8 error-checking byte to all transfers.
PEC adds a CRC-8 error-checking byte to transfers using it, immediately
before the terminating STOP.
Address Resolution Protocol (ARP)
=================================
The Address Resolution Protocol was introduced in Revision 2.0 of
the specification. It is a higher-layer protocol which uses the
messages above.
@ -177,14 +187,17 @@ require PEC checksums.
I2C Block Transactions
======================
The following I2C block transactions are supported by the
SMBus layer and are described here for completeness.
They are *NOT* defined by the SMBus specification.
I2C block transactions do not limit the number of bytes transferred
but the SMBus layer places a limit of 32 bytes.
I2C Block Read
==============
I2C Block Read: i2c_smbus_read_i2c_block_data()
================================================
This command reads a block of bytes from a device, from a
designated register that is specified through the Comm byte.
@ -203,8 +216,8 @@ S Addr Wr [A] Comm1 [A] Comm2 [A]
S Addr Rd [A] [Data] A [Data] A ... A [Data] NA P
I2C Block Write
===============
I2C Block Write: i2c_smbus_write_i2c_block_data()
==================================================
The opposite of the Block Read command, this writes bytes to
a device, to a designated register that is specified through the
@ -212,5 +225,3 @@ Comm byte. Note that command lengths of 0, 2, or more bytes are
supported as they are indistinguishable from data.
S Addr Wr [A] Comm [A] Data [A] Data [A] ... [A] Data [A] P

18
Documentation/i2c/writing-clients
View File

@ -25,12 +25,23 @@ routines, and should be zero-initialized except for fields with data you
provide. A client structure holds device-specific information like the
driver model device node, and its I2C address.
/* iff driver uses driver model ("new style") binding model: */
static struct i2c_device_id foo_idtable[] = {
{ "foo", my_id_for_foo },
{ "bar", my_id_for_bar },
{ }
};
MODULE_DEVICE_TABLE(i2c, foo_idtable);
static struct i2c_driver foo_driver = {
.driver = {
.name = "foo",
},
/* iff driver uses driver model ("new style") binding model: */
.id_table = foo_ids,
.probe = foo_probe,
.remove = foo_remove,
@ -173,10 +184,9 @@ handle may be used during foo_probe(). If foo_probe() reports success
(zero not a negative status code) it may save the handle and use it until
foo_remove() returns. That binding model is used by most Linux drivers.
Drivers match devices when i2c_client.driver_name and the driver name are
the same; this approach is used in several other busses that don't have
device typing support in the hardware. The driver and module name should
match, so hotplug/coldplug mechanisms will modprobe the driver.
The probe function is called when an entry in the id_table name field
matches the device's name. It is passed the entry that was matched so
the driver knows which one in the table matched.
Device Creation (Standard driver model)

24
Documentation/kbuild/kconfig-language.txt
View File

@ -377,27 +377,3 @@ config FOO
limits FOO to module (=m) or disabled (=n).
Build limited by a third config symbol which may be =y or =m
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A common idiom that we see (and sometimes have problems with) is this:
When option C in B (module or subsystem) uses interfaces from A (module
or subsystem), and both A and B are tristate (could be =y or =m if they
were independent of each other, but they aren't), then we need to limit
C such that it cannot be built statically if A is built as a loadable
module. (C already depends on B, so there is no dependency issue to
take care of here.)
If A is linked statically into the kernel image, C can be built
statically or as loadable module(s). However, if A is built as loadable
module(s), then C must be restricted to loadable module(s) also. This
can be expressed in kconfig language as:
config C
depends on A = y || A = B
or for real examples, use this command in a kernel tree:
$ find . -name Kconfig\* | xargs grep -ns "depends on.*=.*||.*=" | grep -v orig

99
Documentation/kernel-doc-nano-HOWTO.txt
View File

@ -1,6 +1,105 @@
kernel-doc nano-HOWTO
=====================
How to format kernel-doc comments
---------------------------------
In order to provide embedded, 'C' friendly, easy to maintain,
but consistent and extractable documentation of the functions and
data structures in the Linux kernel, the Linux kernel has adopted
a consistent style for documenting functions and their parameters,
and structures and their members.
The format for this documentation is called the kernel-doc format.
It is documented in this Documentation/kernel-doc-nano-HOWTO.txt file.
This style embeds the documentation within the source files, using
a few simple conventions. The scripts/kernel-doc perl script, some
SGML templates in Documentation/DocBook, and other tools understand
these conventions, and are used to extract this embedded documentation
into various documents.
In order to provide good documentation of kernel functions and data
structures, please use the following conventions to format your
kernel-doc comments in Linux kernel source.
We definitely need kernel-doc formatted documentation for functions
that are exported to loadable modules using EXPORT_SYMBOL.
We also look to provide kernel-doc formatted documentation for
functions externally visible to other kernel files (not marked
"static").
We also recommend providing kernel-doc formatted documentation
for private (file "static") routines, for consistency of kernel
source code layout. But this is lower priority and at the
discretion of the MAINTAINER of that kernel source file.
Data structures visible in kernel include files should also be
documented using kernel-doc formatted comments.
The opening comment mark "/**" is reserved for kernel-doc comments.
Only comments so marked will be considered by the kernel-doc scripts,
and any comment so marked must be in kernel-doc format. Do not use
"/**" to be begin a comment block unless the comment block contains
kernel-doc formatted comments. The closing comment marker for
kernel-doc comments can be either "*/" or "**/".
Kernel-doc comments should be placed just before the function
or data structure being described.
Example kernel-doc function comment:
/**
* foobar() - short function description of foobar
* @arg1: Describe the first argument to foobar.
* @arg2: Describe the second argument to foobar.
* One can provide multiple line descriptions
* for arguments.
*
* A longer description, with more discussion of the function foobar()
* that might be useful to those using or modifying it. Begins with
* empty comment line, and may include additional embedded empty
* comment lines.
*
* The longer description can have multiple paragraphs.
**/
The first line, with the short description, must be on a single line.
The @argument descriptions must begin on the very next line following
this opening short function description line, with no intervening
empty comment lines.
Example kernel-doc data structure comment.
/**
* struct blah - the basic blah structure
* @mem1: describe the first member of struct blah
* @mem2: describe the second member of struct blah,
* perhaps with more lines and words.
*
* Longer description of this structure.
**/
The kernel-doc function comments describe each parameter to the
function, in order, with the @name lines.
The kernel-doc data structure comments describe each structure member
in the data structure, with the @name lines.
The longer description formatting is "reflowed", losing your line
breaks. So presenting carefully formatted lists within these
descriptions won't work so well; derived documentation will lose
the formatting.
See the section below "How to add extractable documentation to your
source files" for more details and notes on how to format kernel-doc
comments.
Components of the kernel-doc system
-----------------------------------
Many places in the source tree have extractable documentation in the
form of block comments above functions. The components of this system
are:

8
Documentation/kernel-docs.txt
View File

@ -715,14 +715,14 @@
* Name: "Gary's Encyclopedia - The Linux Kernel"
Author: Gary (I suppose...).
URL: http://www.lisoleg.net/cgi-bin/lisoleg.pl?view=kernel.htm
Keywords: links, not found here?.
URL: http://slencyclopedia.berlios.de/index.html
Keywords: linux, community, everything!
Description: Gary's Encyclopedia exists to allow the rapid finding
of documentation and other information of interest to GNU/Linux
users. It has about 4000 links to external pages in 150 major
categories. This link is for kernel-specific links, documents,
sites... Look there if you could not find here what you were
looking for.
sites... This list is now hosted by developer.Berlios.de,
but seems not to have been updated since sometime in 1999.
* Name: "The home page of Linux-MM"
Author: The Linux-MM team.

22
Documentation/kernel-parameters.txt
View File

@ -295,7 +295,7 @@ and is between 256 and 4096 characters. It is defined in the file
when initialising the APIC and IO-APIC components.
apm= [APM] Advanced Power Management
See header of arch/i386/kernel/apm.c.
See header of arch/x86/kernel/apm_32.c.
arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards
Format: <io>,<irq>,<nodeID>
@ -398,9 +398,6 @@ and is between 256 and 4096 characters. It is defined in the file
cio_ignore= [S390]
See Documentation/s390/CommonIO for details.
cio_msg= [S390]
See Documentation/s390/CommonIO for details.
clock= [BUGS=X86-32, HW] gettimeofday clocksource override.
[Deprecated]
Forces specified clocksource (if available) to be used
@ -641,7 +638,7 @@ and is between 256 and 4096 characters. It is defined in the file
elanfreq= [X86-32]
See comment before function elanfreq_setup() in
arch/i386/kernel/cpu/cpufreq/elanfreq.c.
arch/x86/kernel/cpu/cpufreq/elanfreq.c.
elevator= [IOSCHED]
Format: {"anticipatory" | "cfq" | "deadline" | "noop"}
@ -689,6 +686,12 @@ and is between 256 and 4096 characters. It is defined in the file
floppy= [HW]
See Documentation/floppy.txt.
force_pal_cache_flush
[IA-64] Avoid check_sal_cache_flush which may hang on
buggy SAL_CACHE_FLUSH implementations. Using this
parameter will force ia64_sal_cache_flush to call
ia64_pal_cache_flush instead of SAL_CACHE_FLUSH.
gamecon.map[2|3]=
[HW,JOY] Multisystem joystick and NES/SNES/PSX pad
support via parallel port (up to 5 devices per port)
@ -1094,9 +1097,6 @@ and is between 256 and 4096 characters. It is defined in the file
mac5380= [HW,SCSI] Format:
<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
mac53c9x= [HW,SCSI] Format:
<num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
machvec= [IA64] Force the use of a particular machine-vector
(machvec) in a generic kernel.
Example: machvec=hpzx1_swiotlb
@ -1525,6 +1525,8 @@ and is between 256 and 4096 characters. It is defined in the file
This is normally done in pci_enable_device(),
so this option is a temporary workaround
for broken drivers that don't call it.
skip_isa_align [X86] do not align io start addr, so can
handle more pci cards
firmware [ARM] Do not re-enumerate the bus but instead
just use the configuration from the
bootloader. This is currently used on
@ -1677,6 +1679,10 @@ and is between 256 and 4096 characters. It is defined in the file
Format: <reboot_mode>[,<reboot_mode2>[,...]]
See arch/*/kernel/reboot.c or arch/*/kernel/process.c
relax_domain_level=
[KNL, SMP] Set scheduler's default relax_domain_level.
See Documentation/cpusets.txt.
reserve= [KNL,BUGS] Force the kernel to ignore some iomem area
reservetop= [X86-32]

2
Documentation/kobject.txt
View File

@ -305,7 +305,7 @@ should not be manipulated by any other user.
A kset keeps its children in a standard kernel linked list. Kobjects point
back to their containing kset via their kset field. In almost all cases,
the kobjects belonging to a ket have that kset (or, strictly, its embedded
the kobjects belonging to a kset have that kset (or, strictly, its embedded
kobject) in their parent.
As a kset contains a kobject within it, it should always be dynamically

2
Documentation/laptops/thinkpad-acpi.txt
View File

@ -503,7 +503,7 @@ generate input device EV_KEY events.
In addition to the EV_KEY events, thinkpad-acpi may also issue EV_SW
events for switches:
SW_RADIO T60 and later hardare rfkill rocker switch
SW_RFKILL_ALL T60 and later hardare rfkill rocker switch
SW_TABLET_MODE Tablet ThinkPads HKEY events 0x5009 and 0x500A
Non hot-key ACPI HKEY event map:

74
Documentation/lguest/lguest.c
View File

@ -131,6 +131,9 @@ struct device
/* Any queues attached to this device */
struct virtqueue *vq;
/* Handle status being finalized (ie. feature bits stable). */
void (*ready)(struct device *me);
/* Device-specific data. */
void *priv;
};
@ -154,6 +157,9 @@ struct virtqueue
/* The routine to call when the Guest pings us. */
void (*handle_output)(int fd, struct virtqueue *me);
/* Outstanding buffers */
unsigned int inflight;
};
/* Remember the arguments to the program so we can "reboot" */
@ -699,6 +705,7 @@ static unsigned get_vq_desc(struct virtqueue *vq,
errx(1, "Looped descriptor");
} while ((i = next_desc(vq, i)) != vq->vring.num);
vq->inflight++;
return head;
}
@ -716,6 +723,7 @@ static void add_used(struct virtqueue *vq, unsigned int head, int len)
/* Make sure buffer is written before we update index. */
wmb();
vq->vring.used->idx++;
vq->inflight--;
}
/* This actually sends the interrupt for this virtqueue */
@ -723,8 +731,9 @@ static void trigger_irq(int fd, struct virtqueue *vq)
{
unsigned long buf[] = { LHREQ_IRQ, vq->config.irq };
/* If they don't want an interrupt, don't send one. */
if (vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT)
/* If they don't want an interrupt, don't send one, unless empty. */
if ((vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT)
&& vq->inflight)
return;
/* Send the Guest an interrupt tell them we used something up. */
@ -925,24 +934,40 @@ static void enable_fd(int fd, struct virtqueue *vq)
write(waker_fd, &vq->dev->fd, sizeof(vq->dev->fd));
}
/* When the Guest asks us to reset a device, it's is fairly easy. */
static void reset_device(struct device *dev)
/* When the Guest tells us they updated the status field, we handle it. */
static void update_device_status(struct device *dev)
{
struct virtqueue *vq;
verbose("Resetting device %s\n", dev->name);
/* Clear the status. */
dev->desc->status = 0;
/* This is a reset. */
if (dev->desc->status == 0) {
verbose("Resetting device %s\n", dev->name);
/* Clear any features they've acked. */
memset(get_feature_bits(dev) + dev->desc->feature_len, 0,
dev->desc->feature_len);
/* Clear any features they've acked. */
memset(get_feature_bits(dev) + dev->desc->feature_len, 0,
dev->desc->feature_len);
/* Zero out the virtqueues. */
for (vq = dev->vq; vq; vq = vq->next) {
memset(vq->vring.desc, 0,
vring_size(vq->config.num, getpagesize()));
vq->last_avail_idx = 0;
/* Zero out the virtqueues. */
for (vq = dev->vq; vq; vq = vq->next) {
memset(vq->vring.desc, 0,
vring_size(vq->config.num, getpagesize()));
vq->last_avail_idx = 0;
}
} else if (dev->desc->status & VIRTIO_CONFIG_S_FAILED) {
warnx("Device %s configuration FAILED", dev->name);
} else if (dev->desc->status & VIRTIO_CONFIG_S_DRIVER_OK) {
unsigned int i;
verbose("Device %s OK: offered", dev->name);
for (i = 0; i < dev->desc->feature_len; i++)
verbose(" %08x", get_feature_bits(dev)[i]);
verbose(", accepted");
for (i = 0; i < dev->desc->feature_len; i++)
verbose(" %08x", get_feature_bits(dev)
[dev->desc->feature_len+i]);
if (dev->ready)
dev->ready(dev);
}
}
@ -954,9 +979,9 @@ static void handle_output(int fd, unsigned long addr)
/* Check each device and virtqueue. */
for (i = devices.dev; i; i = i->next) {
/* Notifications to device descriptors reset the device. */
/* Notifications to device descriptors update device status. */
if (from_guest_phys(addr) == i->desc) {
reset_device(i);
update_device_status(i);
return;
}
@ -1088,6 +1113,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs,
vq->next = NULL;
vq->last_avail_idx = 0;
vq->dev = dev;
vq->inflight = 0;
/* Initialize the configuration. */
vq->config.num = num_descs;
@ -1170,6 +1196,7 @@ static struct device *new_device(const char *name, u16 type, int fd,
dev->handle_input = handle_input;
dev->name = name;
dev->vq = NULL;
dev->ready = NULL;
/* Append to device list. Prepending to a single-linked list is
* easier, but the user expects the devices to be arranged on the bus
@ -1348,6 +1375,7 @@ static void setup_tun_net(const char *arg)
/* Tell Guest what MAC address to use. */
add_feature(dev, VIRTIO_NET_F_MAC);
add_feature(dev, VIRTIO_F_NOTIFY_ON_EMPTY);
set_config(dev, sizeof(conf), &conf);
/* We don't need the socket any more; setup is done. */
@ -1398,7 +1426,7 @@ static bool service_io(struct device *dev)
struct vblk_info *vblk = dev->priv;
unsigned int head, out_num, in_num, wlen;
int ret;
struct virtio_blk_inhdr *in;
u8 *in;
struct virtio_blk_outhdr *out;
struct iovec iov[dev->vq->vring.num];
off64_t off;
@ -1416,7 +1444,7 @@ static bool service_io(struct device *dev)
head, out_num, in_num);
out = convert(&iov[0], struct virtio_blk_outhdr);
in = convert(&iov[out_num+in_num-1], struct virtio_blk_inhdr);
in = convert(&iov[out_num+in_num-1], u8);
off = out->sector * 512;
/* The block device implements "barriers", where the Guest indicates
@ -1430,7 +1458,7 @@ static bool service_io(struct device *dev)
* It'd be nice if we supported eject, for example, but we don't. */
if (out->type & VIRTIO_BLK_T_SCSI_CMD) {
fprintf(stderr, "Scsi commands unsupported\n");
in->status = VIRTIO_BLK_S_UNSUPP;
*in = VIRTIO_BLK_S_UNSUPP;
wlen = sizeof(*in);
} else if (out->type & VIRTIO_BLK_T_OUT) {
/* Write */
@ -1453,7 +1481,7 @@ static bool service_io(struct device *dev)
errx(1, "Write past end %llu+%u", off, ret);
}
wlen = sizeof(*in);
in->status = (ret >= 0 ? VIRTIO_BLK_S_OK : VIRTIO_BLK_S_IOERR);
*in = (ret >= 0 ? VIRTIO_BLK_S_OK : VIRTIO_BLK_S_IOERR);
} else {
/* Read */
@ -1466,10 +1494,10 @@ static bool service_io(struct device *dev)
verbose("READ from sector %llu: %i\n", out->sector, ret);
if (ret >= 0) {
wlen = sizeof(*in) + ret;
in->status = VIRTIO_BLK_S_OK;
*in = VIRTIO_BLK_S_OK;
} else {
wlen = sizeof(*in);
in->status = VIRTIO_BLK_S_IOERR;
*in = VIRTIO_BLK_S_IOERR;
}
}

12
Documentation/memory-barriers.txt
View File

@ -994,7 +994,17 @@ The Linux kernel has eight basic CPU memory barriers:
DATA DEPENDENCY read_barrier_depends() smp_read_barrier_depends()
All CPU memory barriers unconditionally imply compiler barriers.
All memory barriers except the data dependency barriers imply a compiler
barrier. Data dependencies do not impose any additional compiler ordering.
Aside: In the case of data dependencies, the compiler would be expected to
issue the loads in the correct order (eg. `a[b]` would have to load the value
of b before loading a[b]), however there is no guarantee in the C specification
that the compiler may not speculate the value of b (eg. is equal to 1) and load
a before b (eg. tmp = a[1]; if (b != 1) tmp = a[b]; ). There is also the
problem of a compiler reloading b after having loaded a[b], thus having a newer
copy of b than a[b]. A consensus has not yet been reached about these problems,
however the ACCESS_ONCE macro is a good place to start looking.
SMP memory barriers are reduced to compiler barriers on uniprocessor compiled
systems because it is assumed that a CPU will appear to be self-consistent,

2
Documentation/networking/arcnet.txt
View File

@ -46,7 +46,7 @@ These are the ARCnet drivers for Linux.
This new release (2.91) has been put together by David Woodhouse
<dwmw2@cam.ac.uk>, in an attempt to tidy up the driver after adding support
<dwmw2@infradead.org>, in an attempt to tidy up the driver after adding support
for yet another chipset. Now the generic support has been separated from the
individual chipset drivers, and the source files aren't quite so packed with
#ifdefs! I've changed this file a bit, but kept it in the first person from

2
Documentation/networking/bridge.txt
View File

@ -1,6 +1,6 @@
In order to use the Ethernet bridging functionality, you'll need the
userspace tools. These programs and documentation are available
at http://bridge.sourceforge.net. The download page is
at http://www.linux-foundation.org/en/Net:Bridge. The download page is
http://prdownloads.sourceforge.net/bridge.
If you still have questions, don't hesitate to post to the mailing list

266
Documentation/networking/ip-sysctl.txt
View File

@ -81,23 +81,23 @@ inet_peer_minttl - INTEGER
Minimum time-to-live of entries. Should be enough to cover fragment
time-to-live on the reassembling side. This minimum time-to-live is
guaranteed if the pool size is less than inet_peer_threshold.
Measured in jiffies(1).
Measured in seconds.
inet_peer_maxttl - INTEGER
Maximum time-to-live of entries. Unused entries will expire after
this period of time if there is no memory pressure on the pool (i.e.
when the number of entries in the pool is very small).
Measured in jiffies(1).
Measured in seconds.
inet_peer_gc_mintime - INTEGER
Minimum interval between garbage collection passes. This interval is
in effect under high memory pressure on the pool.
Measured in jiffies(1).
Measured in seconds.
inet_peer_gc_maxtime - INTEGER
Minimum interval between garbage collection passes. This interval is
in effect under low (or absent) memory pressure on the pool.
Measured in jiffies(1).
Measured in seconds.
TCP variables:
@ -148,9 +148,9 @@ tcp_available_congestion_control - STRING
but not loaded.
tcp_base_mss - INTEGER
The initial value of search_low to be used by Packetization Layer
Path MTU Discovery (MTU probing). If MTU probing is enabled,
this is the inital MSS used by the connection.
The initial value of search_low to be used by the packetization layer
Path MTU discovery (MTU probing). If MTU probing is enabled,
this is the initial MSS used by the connection.
tcp_congestion_control - STRING
Set the congestion control algorithm to be used for new
@ -185,10 +185,9 @@ tcp_frto - INTEGER
timeouts. It is particularly beneficial in wireless environments
where packet loss is typically due to random radio interference
rather than intermediate router congestion. F-RTO is sender-side
only modification. Therefore it does not require any support from
the peer, but in a typical case, however, where wireless link is
the local access link and most of the data flows downlink, the
faraway servers should have F-RTO enabled to take advantage of it.
only modification. Therefore it does not require any support from
the peer.
If set to 1, basic version is enabled. 2 enables SACK enhanced
F-RTO if flow uses SACK. The basic version can be used also when
SACK is in use though scenario(s) with it exists where F-RTO
@ -276,7 +275,7 @@ tcp_mem - vector of 3 INTEGERs: min, pressure, max
memory.
tcp_moderate_rcvbuf - BOOLEAN
If set, TCP performs receive buffer autotuning, attempting to
If set, TCP performs receive buffer auto-tuning, attempting to
automatically size the buffer (no greater than tcp_rmem[2]) to
match the size required by the path for full throughput. Enabled by
default.
@ -336,7 +335,7 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max
pressure.
Default: 8K
default: default size of receive buffer used by TCP sockets.
default: initial size of receive buffer used by TCP sockets.
This value overrides net.core.rmem_default used by other protocols.
Default: 87380 bytes. This value results in window of 65535 with
default setting of tcp_adv_win_scale and tcp_app_win:0 and a bit
@ -344,8 +343,10 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max
max: maximal size of receive buffer allowed for automatically
selected receiver buffers for TCP socket. This value does not override
net.core.rmem_max, "static" selection via SO_RCVBUF does not use this.
Default: 87380*2 bytes.
net.core.rmem_max. Calling setsockopt() with SO_RCVBUF disables
automatic tuning of that socket's receive buffer size, in which
case this value is ignored.
Default: between 87380B and 4MB, depending on RAM size.
tcp_sack - BOOLEAN
Enable select acknowledgments (SACKS).
@ -358,7 +359,7 @@ tcp_slow_start_after_idle - BOOLEAN
Default: 1
tcp_stdurg - BOOLEAN
Use the Host requirements interpretation of the TCP urg pointer field.
Use the Host requirements interpretation of the TCP urgent pointer field.
Most hosts use the older BSD interpretation, so if you turn this on
Linux might not communicate correctly with them.
Default: FALSE
@ -371,12 +372,12 @@ tcp_synack_retries - INTEGER
tcp_syncookies - BOOLEAN
Only valid when the kernel was compiled with CONFIG_SYNCOOKIES
Send out syncookies when the syn backlog queue of a socket
overflows. This is to prevent against the common 'syn flood attack'
overflows. This is to prevent against the common 'SYN flood attack'
Default: FALSE
Note, that syncookies is fallback facility.
It MUST NOT be used to help highly loaded servers to stand
against legal connection rate. If you see synflood warnings
against legal connection rate. If you see SYN flood warnings
in your logs, but investigation shows that they occur
because of overload with legal connections, you should tune
another parameters until this warning disappear.
@ -386,7 +387,7 @@ tcp_syncookies - BOOLEAN
to use TCP extensions, can result in serious degradation
of some services (f.e. SMTP relaying), visible not by you,
but your clients and relays, contacting you. While you see
synflood warnings in logs not being really flooded, your server
SYN flood warnings in logs not being really flooded, your server
is seriously misconfigured.
tcp_syn_retries - INTEGER
@ -419,19 +420,21 @@ tcp_window_scaling - BOOLEAN
Enable window scaling as defined in RFC1323.
tcp_wmem - vector of 3 INTEGERs: min, default, max
min: Amount of memory reserved for send buffers for TCP socket.
min: Amount of memory reserved for send buffers for TCP sockets.
Each TCP socket has rights to use it due to fact of its birth.
Default: 4K
default: Amount of memory allowed for send buffers for TCP socket
by default. This value overrides net.core.wmem_default used
by other protocols, it is usually lower than net.core.wmem_default.
default: initial size of send buffer used by TCP sockets. This
value overrides net.core.wmem_default used by other protocols.
It is usually lower than net.core.wmem_default.
Default: 16K
max: Maximal amount of memory allowed for automatically selected
send buffers for TCP socket. This value does not override
net.core.wmem_max, "static" selection via SO_SNDBUF does not use this.
Default: 128K
max: Maximal amount of memory allowed for automatically tuned
send buffers for TCP sockets. This value does not override
net.core.wmem_max. Calling setsockopt() with SO_SNDBUF disables
automatic tuning of that socket's send buffer size, in which case
this value is ignored.
Default: between 64K and 4MB, depending on RAM size.
tcp_workaround_signed_windows - BOOLEAN
If set, assume no receipt of a window scaling option means the
@ -794,10 +797,6 @@ tag - INTEGER
Allows you to write a number, which can be used as required.
Default value is 0.
(1) Jiffie: internal timeunit for the kernel. On the i386 1/100s, on the
Alpha 1/1024s. See the HZ define in /usr/include/asm/param.h for the exact
value on your system.
Alexey Kuznetsov.
kuznet@ms2.inr.ac.ru
@ -1064,24 +1063,193 @@ bridge-nf-filter-pppoe-tagged - BOOLEAN
Default: 1
proc/sys/net/sctp/* Variables:
addip_enable - BOOLEAN
Enable or disable extension of Dynamic Address Reconfiguration
(ADD-IP) functionality specified in RFC5061. This extension provides
the ability to dynamically add and remove new addresses for the SCTP
associations.
1: Enable extension.
0: Disable extension.
Default: 0
addip_noauth_enable - BOOLEAN
Dynamic Address Reconfiguration (ADD-IP) requires the use of
authentication to protect the operations of adding or removing new
addresses. This requirement is mandated so that unauthorized hosts
would not be able to hijack associations. However, older
implementations may not have implemented this requirement while
allowing the ADD-IP extension. For reasons of interoperability,
we provide this variable to control the enforcement of the
authentication requirement.
1: Allow ADD-IP extension to be used without authentication. This
should only be set in a closed environment for interoperability
with older implementations.
0: Enforce the authentication requirement
Default: 0
auth_enable - BOOLEAN
Enable or disable Authenticated Chunks extension. This extension
provides the ability to send and receive authenticated chunks and is
required for secure operation of Dynamic Address Reconfiguration
(ADD-IP) extension.
1: Enable this extension.
0: Disable this extension.
Default: 0
prsctp_enable - BOOLEAN
Enable or disable the Partial Reliability extension (RFC3758) which
is used to notify peers that a given DATA should no longer be expected.
1: Enable extension
0: Disable
Default: 1
max_burst - INTEGER
The limit of the number of new packets that can be initially sent. It
controls how bursty the generated traffic can be.
Default: 4
association_max_retrans - INTEGER
Set the maximum number for retransmissions that an association can
attempt deciding that the remote end is unreachable. If this value
is exceeded, the association is terminated.
Default: 10
max_init_retransmits - INTEGER
The maximum number of retransmissions of INIT and COOKIE-ECHO chunks
that an association will attempt before declaring the destination
unreachable and terminating.
Default: 8
path_max_retrans - INTEGER
The maximum number of retransmissions that will be attempted on a given
path. Once this threshold is exceeded, the path is considered
unreachable, and new traffic will use a different path when the
association is multihomed.
Default: 5
rto_initial - INTEGER
The initial round trip timeout value in milliseconds that will be used
in calculating round trip times. This is the initial time interval
for retransmissions.
Default: 3000
rto_max - INTEGER
The maximum value (in milliseconds) of the round trip timeout. This
is the largest time interval that can elapse between retransmissions.
Default: 60000
rto_min - INTEGER
The minimum value (in milliseconds) of the round trip timeout. This
is the smallest time interval the can elapse between retransmissions.
Default: 1000
hb_interval - INTEGER
The interval (in milliseconds) between HEARTBEAT chunks. These chunks
are sent at the specified interval on idle paths to probe the state of
a given path between 2 associations.
Default: 30000
sack_timeout - INTEGER
The amount of time (in milliseconds) that the implementation will wait
to send a SACK.
Default: 200
valid_cookie_life - INTEGER
The default lifetime of the SCTP cookie (in milliseconds). The cookie
is used during association establishment.
Default: 60000
cookie_preserve_enable - BOOLEAN
Enable or disable the ability to extend the lifetime of the SCTP cookie
that is used during the establishment phase of SCTP association
1: Enable cookie lifetime extension.
0: Disable
Default: 1
rcvbuf_policy - INTEGER
Determines if the receive buffer is attributed to the socket or to
association. SCTP supports the capability to create multiple
associations on a single socket. When using this capability, it is
possible that a single stalled association that's buffering a lot
of data may block other associations from delivering their data by
consuming all of the receive buffer space. To work around this,
the rcvbuf_policy could be set to attribute the receiver buffer space
to each association instead of the socket. This prevents the described
blocking.
1: rcvbuf space is per association
0: recbuf space is per socket
Default: 0
sndbuf_policy - INTEGER
Similar to rcvbuf_policy above, this applies to send buffer space.
1: Send buffer is tracked per association
0: Send buffer is tracked per socket.
Default: 0
sctp_mem - vector of 3 INTEGERs: min, pressure, max
Number of pages allowed for queueing by all SCTP sockets.
min: Below this number of pages SCTP is not bothered about its
memory appetite. When amount of memory allocated by SCTP exceeds
this number, SCTP starts to moderate memory usage.
pressure: This value was introduced to follow format of tcp_mem.
max: Number of pages allowed for queueing by all SCTP sockets.
Default is calculated at boot time from amount of available memory.
sctp_rmem - vector of 3 INTEGERs: min, default, max
See tcp_rmem for a description.
sctp_wmem - vector of 3 INTEGERs: min, default, max
See tcp_wmem for a description.
UNDOCUMENTED:
dev_weight FIXME
discovery_slots FIXME
discovery_timeout FIXME
fast_poll_increase FIXME
ip6_queue_maxlen FIXME
lap_keepalive_time FIXME
lo_cong FIXME
max_baud_rate FIXME
max_dgram_qlen FIXME
max_noreply_time FIXME
max_tx_data_size FIXME
max_tx_window FIXME
min_tx_turn_time FIXME
mod_cong FIXME
no_cong FIXME
no_cong_thresh FIXME
slot_timeout FIXME
warn_noreply_time FIXME
/proc/sys/net/core/*
dev_weight FIXME
/proc/sys/net/unix/*
max_dgram_qlen FIXME
/proc/sys/net/irda/*
fast_poll_increase FIXME
warn_noreply_time FIXME
discovery_slots FIXME
slot_timeout FIXME
max_baud_rate FIXME
discovery_timeout FIXME
lap_keepalive_time FIXME
max_noreply_time FIXME
max_tx_data_size FIXME
max_tx_window FIXME
min_tx_turn_time FIXME

6
Documentation/networking/s2io.txt
View File

@ -83,9 +83,9 @@ Valid range: Limited by memory on system
Default: 30
e. intr_type
Specifies interrupt type. Possible values 1(INTA), 2(MSI), 3(MSI-X)
Valid range: 1-3
Default: 1
Specifies interrupt type. Possible values 0(INTA), 2(MSI-X)
Valid values: 0, 2
Default: 2
5. Performance suggestions
General:

11
Documentation/powerpc/mpc52xx-device-tree-bindings.txt
View File

@ -237,6 +237,17 @@ Each GPIO controller node should have the empty property gpio-controller and
according to the bit numbers in the GPIO control registers. The second cell
is for flags which is currently unsused.
8) FEC nodes
The FEC node can specify one of the following properties to configure
the MII link:
"fsl,7-wire-mode" - An empty property that specifies the link uses 7-wire
mode instead of MII
"current-speed" - Specifies that the MII should be configured for a fixed
speed. This property should contain two cells. The
first cell specifies the speed in Mbps and the second
should be '0' for half duplex and '1' for full duplex
"phy-handle" - Contains a phandle to an Ethernet PHY.
IV - Extra Notes
================

11
Documentation/s390/CommonIO
View File

@ -8,17 +8,6 @@ Command line parameters
Enable logging of debug information in case of ccw device timeouts.
* cio_msg = yes | no
Determines whether information on found devices and sensed device
characteristics should be shown during startup or when new devices are
found, i. e. messages of the types "Detected device 0.0.4711 on subchannel
0.0.0042" and "SenseID: Device 0.0.4711 reports: ...".
Default is off.
* cio_ignore = {all} |
{<device> | <range of devices>} |
{!<device> | !<range of devices>}

165
Documentation/scheduler/sched-design.txt
View File

@ -1,165 +0,0 @@
Goals, Design and Implementation of the
new ultra-scalable O(1) scheduler
This is an edited version of an email Ingo Molnar sent to
lkml on 4 Jan 2002. It describes the goals, design, and
implementation of Ingo's new ultra-scalable O(1) scheduler.
Last Updated: 18 April 2002.
Goal
====
The main goal of the new scheduler is to keep all the good things we know
and love about the current Linux scheduler:
- good interactive performance even during high load: if the user
types or clicks then the system must react instantly and must execute
the user tasks smoothly, even during considerable background load.
- good scheduling/wakeup performance with 1-2 runnable processes.
- fairness: no process should stay without any timeslice for any
unreasonable amount of time. No process should get an unjustly high
amount of CPU time.
- priorities: less important tasks can be started with lower priority,
more important tasks with higher priority.
- SMP efficiency: no CPU should stay idle if there is work to do.
- SMP affinity: processes which run on one CPU should stay affine to
that CPU. Processes should not bounce between CPUs too frequently.
- plus additional scheduler features: RT scheduling, CPU binding.
and the goal is also to add a few new things:
- fully O(1) scheduling. Are you tired of the recalculation loop
blowing the L1 cache away every now and then? Do you think the goodness
loop is taking a bit too long to finish if there are lots of runnable
processes? This new scheduler takes no prisoners: wakeup(), schedule(),
the timer interrupt are all O(1) algorithms. There is no recalculation
loop. There is no goodness loop either.
- 'perfect' SMP scalability. With the new scheduler there is no 'big'
runqueue_lock anymore - it's all per-CPU runqueues and locks - two
tasks on two separate CPUs can wake up, schedule and context-switch
completely in parallel, without any interlocking. All
scheduling-relevant data is structured for maximum scalability.
- better SMP affinity. The old scheduler has a particular weakness that
causes the random bouncing of tasks between CPUs if/when higher
priority/interactive tasks, this was observed and reported by many
people. The reason is that the timeslice recalculation loop first needs
every currently running task to consume its timeslice. But when this
happens on eg. an 8-way system, then this property starves an
increasing number of CPUs from executing any process. Once the last
task that has a timeslice left has finished using up that timeslice,
the recalculation loop is triggered and other CPUs can start executing
tasks again - after having idled around for a number of timer ticks.
The more CPUs, the worse this effect.
Furthermore, this same effect causes the bouncing effect as well:
whenever there is such a 'timeslice squeeze' of the global runqueue,
idle processors start executing tasks which are not affine to that CPU.
(because the affine tasks have finished off their timeslices already.)
The new scheduler solves this problem by distributing timeslices on a
per-CPU basis, without having any global synchronization or
recalculation.
- batch scheduling. A significant proportion of computing-intensive tasks
benefit from batch-scheduling, where timeslices are long and processes
are roundrobin scheduled. The new scheduler does such batch-scheduling
of the lowest priority tasks - so nice +19 jobs will get
'batch-scheduled' automatically. With this scheduler, nice +19 jobs are
in essence SCHED_IDLE, from an interactiveness point of view.
- handle extreme loads more smoothly, without breakdown and scheduling
storms.
- O(1) RT scheduling. For those RT folks who are paranoid about the
O(nr_running) property of the goodness loop and the recalculation loop.
- run fork()ed children before the parent. Andrea has pointed out the
advantages of this a few months ago, but patches for this feature
do not work with the old scheduler as well as they should,
because idle processes often steal the new child before the fork()ing
CPU gets to execute it.
Design
======
The core of the new scheduler contains the following mechanisms:
- *two* priority-ordered 'priority arrays' per CPU. There is an 'active'
array and an 'expired' array. The active array contains all tasks that
are affine to this CPU and have timeslices left. The expired array
contains all tasks which have used up their timeslices - but this array
is kept sorted as well. The active and expired array is not accessed
directly, it's accessed through two pointers in the per-CPU runqueue
structure. If all active tasks are used up then we 'switch' the two
pointers and from now on the ready-to-go (former-) expired array is the
active array - and the empty active array serves as the new collector
for expired tasks.
- there is a 64-bit bitmap cache for array indices. Finding the highest
priority task is thus a matter of two x86 BSFL bit-search instructions.
the split-array solution enables us to have an arbitrary number of active
and expired tasks, and the recalculation of timeslices can be done
immediately when the timeslice expires. Because the arrays are always
access through the pointers in the runqueue, switching the two arrays can
be done very quickly.
this is a hybride priority-list approach coupled with roundrobin
scheduling and the array-switch method of distributing timeslices.
- there is a per-task 'load estimator'.
one of the toughest things to get right is good interactive feel during
heavy system load. While playing with various scheduler variants i found
that the best interactive feel is achieved not by 'boosting' interactive
tasks, but by 'punishing' tasks that want to use more CPU time than there
is available. This method is also much easier to do in an O(1) fashion.
to establish the actual 'load' the task contributes to the system, a
complex-looking but pretty accurate method is used: there is a 4-entry
'history' ringbuffer of the task's activities during the last 4 seconds.
This ringbuffer is operated without much overhead. The entries tell the
scheduler a pretty accurate load-history of the task: has it used up more
CPU time or less during the past N seconds. [the size '4' and the interval
of 4x 1 seconds was found by lots of experimentation - this part is
flexible and can be changed in both directions.]
the penalty a task gets for generating more load than the CPU can handle
is a priority decrease - there is a maximum amount to this penalty
relative to their static priority, so even fully CPU-bound tasks will
observe each other's priorities, and will share the CPU accordingly.
the SMP load-balancer can be extended/switched with additional parallel
computing and cache hierarchy concepts: NUMA scheduling, multi-core CPUs
can be supported easily by changing the load-balancer. Right now it's
tuned for my SMP systems.
i skipped the prev->mm == next->mm advantage - no workload i know of shows
any sensitivity to this. It can be added back by sacrificing O(1)
schedule() [the current and one-lower priority list can be searched for a
that->mm == current->mm condition], but costs a fair number of cycles
during a number of important workloads, so i wanted to avoid this as much
as possible.
- the SMP idle-task startup code was still racy and the new scheduler
triggered this. So i streamlined the idle-setup code a bit. We do not call
into schedule() before all processors have started up fully and all idle
threads are in place.
- the patch also cleans up a number of aspects of sched.c - moves code
into other areas of the kernel where it's appropriate, and simplifies
certain code paths and data constructs. As a result, the new scheduler's
code is smaller than the old one.
Ingo

22
Documentation/scsi/ChangeLog.megaraid_sas
View File

@ -1,3 +1,25 @@
1 Release Date : Mon. March 10 11:02:31 PDT 2008 -
(emaild-id:megaraidlinux@lsi.com)
Sumant Patro
Bo Yang
2 Current Version : 00.00.03.20-RC1
3 Older Version : 00.00.03.16
1. Rollback the sense info implementation
Sense buffer ptr data type in the ioctl path is reverted back
to u32 * as in previous versions of driver.
2. Fixed the driver frame count.
When Driver sent wrong frame count to firmware. As this
particular command is sent to drive, FW is seeing continuous
chip resets and so the command will timeout.
3. Add the new controller(1078DE) support to the driver
and Increase the max_wait to 60 from 10 in the controller
operational status. With this max_wait increase, driver will
make sure the FW will finish the pending cmd for KDUMP case.
1 Release Date : Thur. Nov. 07 16:30:43 PST 2007 -
(emaild-id:megaraidlinux@lsi.com)
Sumant Patro

2
Documentation/video4linux/CARDLIST.au0828
View File

@ -1,4 +1,4 @@
0 -> Unknown board (au0828)
1 -> Hauppauge HVR950Q (au0828) [2040:7200]
1 -> Hauppauge HVR950Q (au0828) [2040:7200,2040:7210,2040:7217,2040:721b,2040:721f,2040:7280,0fd9:0008]
2 -> Hauppauge HVR850 (au0828) [2040:7240]
3 -> DViCO FusionHDTV USB (au0828) [0fe9:d620]

2
Documentation/video4linux/CARDLIST.cx23885
View File

@ -5,6 +5,6 @@
4 -> DViCO FusionHDTV5 Express [18ac:d500]
5 -> Hauppauge WinTV-HVR1500Q [0070:7790,0070:7797]
6 -> Hauppauge WinTV-HVR1500 [0070:7710,0070:7717]
7 -> Hauppauge WinTV-HVR1200 [0070:71d1]
7 -> Hauppauge WinTV-HVR1200 [0070:71d1,0070:71d3]
8 -> Hauppauge WinTV-HVR1700 [0070:8101]
9 -> Hauppauge WinTV-HVR1400 [0070:8010]

2
Documentation/video4linux/CARDLIST.cx88
View File

@ -60,7 +60,7 @@
59 -> DViCO FusionHDTV 5 PCI nano [18ac:d530]
60 -> Pinnacle Hybrid PCTV [12ab:1788]
61 -> Winfast TV2000 XP Global [107d:6f18]
62 -> PowerColor Real Angel 330 [14f1:ea3d]
62 -> PowerColor RA330 [14f1:ea3d]
63 -> Geniatech X8000-MT DVBT [14f1:8852]
64 -> DViCO FusionHDTV DVB-T PRO [18ac:db30]
65 -> DViCO FusionHDTV 7 Gold [18ac:d610]

2
Documentation/video4linux/CARDLIST.em28xx
View File

@ -14,4 +14,4 @@
13 -> Terratec Prodigy XS (em2880) [0ccd:0047]
14 -> Pixelview Prolink PlayTV USB 2.0 (em2820/em2840)
15 -> V-Gear PocketTV (em2800)
16 -> Hauppauge WinTV HVR 950 (em2880) [2040:6513]
16 -> Hauppauge WinTV HVR 950 (em2880) [2040:6513,2040:6517,2040:651b,2040:651f]

4
Documentation/video4linux/cx18.txt
View File

@ -1,7 +1,9 @@
Some notes regarding the cx18 driver for the Conexant CX23418 MPEG
encoder chip:
1) The only hardware currently supported is the Hauppauge HVR-1600.
1) The only hardware currently supported is the Hauppauge HVR-1600
card and the Compro VideoMate H900 (note that this card only
supports analog input, it has no digital tuner!).
2) Some people have problems getting the i2c bus to work. Cause unknown.
The symptom is that the eeprom cannot be read and the card is

77
Documentation/vm/pagemap.txt Normal file
View File

@ -0,0 +1,77 @@
pagemap, from the userspace perspective
---------------------------------------
pagemap is a new (as of 2.6.25) set of interfaces in the kernel that allow
userspace programs to examine the page tables and related information by
reading files in /proc.
There are three components to pagemap:
* /proc/pid/pagemap. This file lets a userspace process find out which
physical frame each virtual page is mapped to. It contains one 64-bit
value for each virtual page, containing the following data (from
fs/proc/task_mmu.c, above pagemap_read):
* Bits 0-55 page frame number (PFN) if present
* Bits 0-4 swap type if swapped
* Bits 5-55 swap offset if swapped
* Bits 55-60 page shift (page size = 1<<page shift)
* Bit 61 reserved for future use
* Bit 62 page swapped
* Bit 63 page present
If the page is not present but in swap, then the PFN contains an
encoding of the swap file number and the page's offset into the
swap. Unmapped pages return a null PFN. This allows determining
precisely which pages are mapped (or in swap) and comparing mapped
pages between processes.
Efficient users of this interface will use /proc/pid/maps to
determine which areas of memory are actually mapped and llseek to
skip over unmapped regions.
* /proc/kpagecount. This file contains a 64-bit count of the number of
times each page is mapped, indexed by PFN.
* /proc/kpageflags. This file contains a 64-bit set of flags for each
page, indexed by PFN.
The flags are (from fs/proc/proc_misc, above kpageflags_read):
0. LOCKED
1. ERROR
2. REFERENCED
3. UPTODATE
4. DIRTY
5. LRU
6. ACTIVE
7. SLAB
8. WRITEBACK
9. RECLAIM
10. BUDDY
Using pagemap to do something useful:
The general procedure for using pagemap to find out about a process' memory
usage goes like this:
1. Read /proc/pid/maps to determine which parts of the memory space are
mapped to what.
2. Select the maps you are interested in -- all of them, or a particular
library, or the stack or the heap, etc.
3. Open /proc/pid/pagemap and seek to the pages you would like to examine.
4. Read a u64 for each page from pagemap.
5. Open /proc/kpagecount and/or /proc/kpageflags. For each PFN you just
read, seek to that entry in the file, and read the data you want.
For example, to find the "unique set size" (USS), which is the amount of
memory that a process is using that is not shared with any other process,
you can go through every map in the process, find the PFNs, look those up
in kpagecount, and tally up the number of pages that are only referenced
once.
Other notes:
Reading from any of the files will return -EINVAL if you are not starting
the read on an 8-byte boundary (e.g., if you seeked an odd number of bytes
into the file), or if the size of the read is not a multiple of 8 bytes.

14
Documentation/vm/slabinfo.c
View File

@ -1,7 +1,7 @@
/*
* Slabinfo: Tool to get reports about slabs
*
* (C) 2007 sgi, Christoph Lameter <clameter@sgi.com>
* (C) 2007 sgi, Christoph Lameter
*
* Compile by:
*
@ -38,7 +38,7 @@ struct slabinfo {
unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill;
unsigned long cpuslab_flush, deactivate_full, deactivate_empty;
unsigned long deactivate_to_head, deactivate_to_tail;
unsigned long deactivate_remote_frees;
unsigned long deactivate_remote_frees, order_fallback;
int numa[MAX_NODES];
int numa_partial[MAX_NODES];
} slabinfo[MAX_SLABS];
@ -99,7 +99,7 @@ void fatal(const char *x, ...)
void usage(void)
{
printf("slabinfo 5/7/2007. (c) 2007 sgi. clameter@sgi.com\n\n"
printf("slabinfo 5/7/2007. (c) 2007 sgi.\n\n"
"slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n"
"-a|--aliases Show aliases\n"
"-A|--activity Most active slabs first\n"
@ -293,7 +293,7 @@ int line = 0;
void first_line(void)
{
if (show_activity)
printf("Name Objects Alloc Free %%Fast\n");
printf("Name Objects Alloc Free %%Fast Fallb O\n");
else
printf("Name Objects Objsize Space "
"Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n");
@ -573,11 +573,12 @@ void slabcache(struct slabinfo *s)
total_alloc = s->alloc_fastpath + s->alloc_slowpath;
total_free = s->free_fastpath + s->free_slowpath;
printf("%-21s %8ld %8ld %8ld %3ld %3ld \n",
printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d\n",
s->name, s->objects,
total_alloc, total_free,
total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0,
total_free ? (s->free_fastpath * 100 / total_free) : 0);
total_free ? (s->free_fastpath * 100 / total_free) : 0,
s->order_fallback, s->order);
}
else
printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n",
@ -1188,6 +1189,7 @@ void read_slab_dir(void)
slab->deactivate_to_head = get_obj("deactivate_to_head");
slab->deactivate_to_tail = get_obj("deactivate_to_tail");
slab->deactivate_remote_frees = get_obj("deactivate_remote_frees");
slab->order_fallback = get_obj("order_fallback");
chdir("..");
if (slab->name[0] == ':')
alias_targets++;

2
Documentation/vm/slub.txt
View File

@ -266,4 +266,4 @@ of other objects.
slub_debug=FZ,dentry
Christoph Lameter, <clameter@sgi.com>, May 30, 2007
Christoph Lameter, May 30, 2007

3
Kbuild
View File

@ -96,5 +96,4 @@ missing-syscalls: scripts/checksyscalls.sh FORCE
$(call cmd,syscalls)
# Delete all targets during make clean
clean-files := $(addprefix $(objtree)/,$(targets))
clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file) $(offsets-file),$(targets)))

323
MAINTAINERS
View File

@ -228,21 +228,21 @@ ACPI BATTERY DRIVERS
P: Alexey Starikovskiy
M: astarikovskiy@suse.de
L: linux-acpi@vger.kernel.org
W: http://acpi.sourceforge.net/
W: http://www.lesswatts.org/projects/acpi/
S: Supported
ACPI EC DRIVER
P: Alexey Starikovskiy
M: astarikovskiy@suse.de
L: linux-acpi@vger.kernel.org
W: http://acpi.sourceforge.net/
W: http://www.lesswatts.org/projects/acpi/
S: Supported
ACPI FAN DRIVER
P: Len Brown
M: len.brown@intel.com
L: linux-acpi@vger.kernel.org
W: http://acpi.sourceforge.net/
W: http://www.lesswatts.org/projects/acpi/
S: Supported
ACPI PCI HOTPLUG DRIVER
@ -255,14 +255,14 @@ ACPI THERMAL DRIVER
P: Len Brown
M: len.brown@intel.com
L: linux-acpi@vger.kernel.org
W: http://acpi.sourceforge.net/
W: http://www.lesswatts.org/projects/acpi/
S: Supported
ACPI VIDEO DRIVER
P: Rui Zhang
M: rui.zhang@intel.com
L: linux-acpi@vger.kernel.org
W: http://acpi.sourceforge.net/
W: http://www.lesswatts.org/projects/acpi/
S: Supported
ACPI WMI DRIVER
@ -274,7 +274,7 @@ S: Maintained
AD1889 ALSA SOUND DRIVER
P: Kyle McMartin
M: kyle@parisc-linux.org
M: kyle@mcmartin.ca
P: Thibaut Varene
M: T-Bone@parisc-linux.org
W: http://wiki.parisc-linux.org/AD1889
@ -367,12 +367,12 @@ S: Maintained for 2.4; PCI support for 2.6.
AMD GEODE CS5536 USB DEVICE CONTROLLER DRIVER
P: Thomas Dahlmann
M: thomas.dahlmann@amd.com
L: info-linux@geode.amd.com (subscribers-only)
L: linux-geode@lists.infradead.org (moderated for non-subscribers)
S: Supported
AMD GEODE PROCESSOR/CHIPSET SUPPORT
P: Jordan Crouse
L: info-linux@geode.amd.com (subscribers-only)
L: linux-geode@lists.infradead.org (moderated for non-subscribers)
W: http://www.amd.com/us-en/ConnectivitySolutions/TechnicalResources/0,,50_2334_2452_11363,00.html
S: Supported
@ -763,9 +763,10 @@ S: Maintained
AUXILIARY DISPLAY DRIVERS
P: Miguel Ojeda Sandonis
M: maxextreme@gmail.com
M: miguel.ojeda.sandonis@gmail.com
L: linux-kernel@vger.kernel.org
W: http://auxdisplay.googlepages.com/
W: http://miguelojeda.es/auxdisplay.htm
W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm
S: Maintained
AVR32 ARCHITECTURE
@ -982,13 +983,6 @@ L: bonding-devel@lists.sourceforge.net
W: http://sourceforge.net/projects/bonding/
S: Supported
BROADBAND PROCESSOR ARCHITECTURE
P: Arnd Bergmann
M: arnd@arndb.de
L: linuxppc-dev@ozlabs.org
W: http://www.penguinppc.org/ppc64/
S: Supported
BROADCOM B44 10/100 ETHERNET DRIVER
P: Gary Zambrano
M: zambrano@broadcom.com
@ -1002,8 +996,8 @@ L: netdev@vger.kernel.org
S: Supported
BROADCOM BNX2X 10 GIGABIT ETHERNET DRIVER
P: Eliezer Tamir
M: eliezert@broadcom.com
P: Eilon Greenstein
M: eilong@broadcom.com
L: netdev@vger.kernel.org
S: Supported
@ -1052,18 +1046,28 @@ L: linux-kernel@vger.kernel.org
L: discuss@x86-64.org
S: Maintained
CELL BROADBAND ENGINE ARCHITECTURE
P: Arnd Bergmann
M: arnd@arndb.de
L: linuxppc-dev@ozlabs.org
L: cbe-oss-dev@ozlabs.org
W: http://www.ibm.com/developerworks/power/cell/
S: Supported
CFAG12864B LCD DRIVER
P: Miguel Ojeda Sandonis
M: maxextreme@gmail.com
M: miguel.ojeda.sandonis@gmail.com
L: linux-kernel@vger.kernel.org
W: http://auxdisplay.googlepages.com/
W: http://miguelojeda.es/auxdisplay.htm
W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm
S: Maintained
CFAG12864BFB LCD FRAMEBUFFER DRIVER
P: Miguel Ojeda Sandonis
M: maxextreme@gmail.com
M: miguel.ojeda.sandonis@gmail.com
L: linux-kernel@vger.kernel.org
W: http://auxdisplay.googlepages.com/
W: http://miguelojeda.es/auxdisplay.htm
W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm
S: Maintained
CFG80211 and NL80211
@ -1201,6 +1205,7 @@ M: pj@sgi.com
M: menage@google.com
L: linux-kernel@vger.kernel.org
W: http://www.bullopensource.org/cpuset/
W: http://oss.sgi.com/projects/cpusets/
S: Supported
CRAMFS FILESYSTEM
@ -1230,6 +1235,29 @@ P: Jaya Kumar
M: jayakumar.alsa@gmail.com
S: Maintained
CX18 VIDEO4LINUX DRIVER
P: Hans Verkuil, Andy Walls
M: hverkuil@xs4all.nl, awalls@radix.net
L: ivtv-devel@ivtvdriver.org
L: ivtv-users@ivtvdriver.org
L: video4linux-list@redhat.com
W: http://linuxtv.org
S: Maintained
CXGB3 ETHERNET DRIVER (CXGB3)
P: Divy Le Ray
M: divy@chelsio.com
L: netdev@vger.kernel.org
W: http://www.chelsio.com
S: Supported
CXGB3 IWARP RNIC DRIVER (IW_CXGB3)
P: Steve Wise
M: swise@chelsio.com
L: general@lists.openfabrics.org
W: http://www.openfabrics.org
S: Supported
CYBERPRO FB DRIVER
P: Russell King
M: rmk@arm.linux.org.uk
@ -1395,6 +1423,14 @@ M: kristen.c.accardi@intel.com
L: linux-acpi@vger.kernel.org
S: Supported
DOCUMENTATION (/Documentation directory)
P: Michael Kerrisk
M: mtk.manpages@gmail.com
P: Randy Dunlap
M: rdunlap@xenotime.net
L: linux-doc@vger.kernel.org
S: Maintained
DOUBLETALK DRIVER
P: James R. Van Zandt
M: jrv@vanzandt.mv.com
@ -1587,7 +1623,7 @@ ETHERNET BRIDGE
P: Stephen Hemminger
M: shemminger@linux-foundation.org
L: bridge@lists.linux-foundation.org
W: http://bridge.sourceforge.net/
W: http://www.linux-foundation.org/en/Net:Bridge
S: Maintained
ETHERTEAM 16I DRIVER
@ -1601,13 +1637,13 @@ S: Maintained
EXT3 FILE SYSTEM
P: Stephen Tweedie, Andrew Morton
M: sct@redhat.com, akpm@linux-foundation.org, adilger@clusterfs.com
M: sct@redhat.com, akpm@linux-foundation.org, adilger@sun.com
L: linux-ext4@vger.kernel.org
S: Maintained
EXT4 FILE SYSTEM
P: Stephen Tweedie, Andrew Morton
M: sct@redhat.com, akpm@linux-foundation.org, adilger@clusterfs.com
M: sct@redhat.com, akpm@linux-foundation.org, adilger@sun.com
L: linux-ext4@vger.kernel.org
S: Maintained
@ -1636,8 +1672,10 @@ W: http://linux-fbdev.sourceforge.net/
S: Maintained
FREESCALE DMA DRIVER
P; Zhang Wei
M: wei.zhang@freescale.com
P: Li Yang
M: leoli@freescale.com
P: Zhang Wei
M: zw@zh-kernel.org
L: linuxppc-embedded@ozlabs.org
L: linux-kernel@vger.kernel.org
S: Maintained
@ -1801,7 +1839,7 @@ S: Maintained
HARMONY SOUND DRIVER
P: Kyle McMartin
M: kyle@parisc-linux.org
M: kyle@mcmartin.ca
L: linux-parisc@vger.kernel.org
S: Maintained
@ -1931,8 +1969,10 @@ L: lm-sensors@lm-sensors.org
S: Maintained
I2C SUBSYSTEM
P: Jean Delvare
P: Jean Delvare (PC drivers, core)
M: khali@linux-fr.org
P: Ben Dooks (embedded platforms)
M: ben-linux@fluff.org
L: i2c@lm-sensors.org
T: quilt http://khali.linux-fr.org/devel/linux-2.6/jdelvare-i2c/
S: Maintained
@ -2112,12 +2152,10 @@ L: netdev@vger.kernel.org
S: Maintained
INTEL ETHERNET DRIVERS (e100/e1000/e1000e/igb/ixgb/ixgbe)
P: Auke Kok
M: auke-jan.h.kok@intel.com
P: Jesse Brandeburg
M: jesse.brandeburg@intel.com
P: Jeff Kirsher
M: jeffrey.t.kirsher@intel.com
P: Jesse Brandeburg
M: jesse.brandeburg@intel.com
P: Bruce Allan
M: bruce.w.allan@intel.com
P: John Ronciak
@ -2320,7 +2358,8 @@ S: Maintained
KERNEL BUILD (kbuild: Makefile, scripts/Makefile.*)
P: Sam Ravnborg
M: sam@ravnborg.org
T: git kernel.org:/pub/scm/linux/kernel/git/sam/kbuild.git
T: git kernel.org:/pub/scm/linux/kernel/git/sam/kbuild-next.git
T: git kernel.org:/pub/scm/linux/kernel/git/sam/kbuild-fixes.git
L: linux-kbuild@vger.kernel.org
S: Maintained
@ -2342,24 +2381,24 @@ S: Supported
KERNEL VIRTUAL MACHINE (KVM)
P: Avi Kivity
M: avi@qumranet.com
L: kvm-devel@lists.sourceforge.net
W: kvm.sourceforge.net
L: kvm@vger.kernel.org
W: http://kvm.qumranet.com
S: Supported
KERNEL VIRTUAL MACHINE (KVM) FOR POWERPC
P: Hollis Blanchard
M: hollisb@us.ibm.com
L: kvm-ppc-devel@lists.sourceforge.net
W: kvm.sourceforge.net
L: kvm-ppc@vger.kernel.org
W: http://kvm.qumranet.com
S: Supported
KERNEL VIRTUAL MACHINE For Itanium(KVM/IA64)
KERNEL VIRTUAL MACHINE For Itanium (KVM/IA64)
P: Anthony Xu
M: anthony.xu@intel.com
P: Xiantao Zhang
M: xiantao.zhang@intel.com
L: kvm-ia64-devel@lists.sourceforge.net
W: kvm.sourceforge.net
L: kvm-ia64@vger.kernel.org
W: http://kvm.qumranet.com
S: Supported
KERNEL VIRTUAL MACHINE for s390 (KVM/s390)
@ -2400,9 +2439,10 @@ S: Maintained
KS0108 LCD CONTROLLER DRIVER
P: Miguel Ojeda Sandonis
M: maxextreme@gmail.com
M: miguel.ojeda.sandonis@gmail.com
L: linux-kernel@vger.kernel.org
W: http://auxdisplay.googlepages.com/
W: http://miguelojeda.es/auxdisplay.htm
W: http://jair.lab.fi.uva.es/~migojed/auxdisplay.htm
S: Maintained
LAPB module
@ -2446,9 +2486,11 @@ M: James.Bottomley@HansenPartnership.com
W: http://www.hansenpartnership.com/voyager
S: Maintained
LINUX FOR POWERPC
LINUX FOR POWERPC (32-BIT AND 64-BIT)
P: Paul Mackerras
M: paulus@samba.org
P: Benjamin Herrenschmidt
M: benh@kernel.crashing.org
W: http://www.penguinppc.org/
L: linuxppc-dev@ozlabs.org
T: git kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc.git
@ -2488,13 +2530,6 @@ W: http://wiki.secretlab.ca/index.php/Linux_on_Xilinx_Virtex
L: linuxppc-dev@ozlabs.org
S: Maintained
LINUX FOR POWERPC BOOT CODE
P: Tom Rini
M: trini@kernel.crashing.org
W: http://www.penguinppc.org/
L: linuxppc-dev@ozlabs.org
S: Maintained
LINUX FOR POWERPC EMBEDDED PPC8XX
P: Vitaly Bordug
M: vitb@kernel.crashing.org
@ -2523,22 +2558,10 @@ P: Arnaldo Carvalho de Melo
M: acme@ghostprotocols.net
S: Maintained
LINUX FOR 64BIT POWERPC
P: Paul Mackerras
M: paulus@samba.org
M: paulus@au.ibm.com
P: Anton Blanchard
M: anton@samba.org
M: anton@au.ibm.com
W: http://www.penguinppc.org/ppc64/
L: linuxppc-dev@ozlabs.org
S: Supported
LINUX SECURITY MODULE (LSM) FRAMEWORK
P: Chris Wright
M: chrisw@sous-sol.org
L: linux-security-module@vger.kernel.org
W: http://lsm.immunix.org
T: git kernel.org:/pub/scm/linux/kernel/git/chrisw/lsm-2.6.git
S: Supported
@ -2653,8 +2676,8 @@ S: Supported
MAN-PAGES: MANUAL PAGES FOR LINUX -- Sections 2, 3, 4, 5, and 7
P: Michael Kerrisk
M: mtk.manpages@gmail.com
W: ftp://ftp.kernel.org/pub/linux/docs/manpages
S: Maintained
W: http://www.kernel.org/doc/man-pages
S: Supported
MARVELL LIBERTAS WIRELESS DRIVER
P: Dan Williams
@ -2787,6 +2810,12 @@ W: https://tango.0pointer.de/mailman/listinfo/s270-linux
W: http://0pointer.de/lennart/tchibo.html
S: Maintained
MULTIFUNCTION DEVICES (MFD)
P: Samuel Ortiz
M: sameo@openedhand.com
L: linux-kernel@vger.kernel.org
S: Supported
MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
P: Pierre Ossman
M: drzeus-mmc@drzeus.cx
@ -2810,6 +2839,15 @@ M: jirislaby@gmail.com
L: linux-kernel@vger.kernel.org
S: Maintained
MYRICOM MYRI-10G 10GbE DRIVER (MYRI10GE)
P: Andrew Gallatin
M: gallatin@myri.com
P: Brice Goglin
M: brice@myri.com
L: netdev@vger.kernel.org
W: http://www.myri.com/scs/download-Myri10GE.html
S: Supported
NATSEMI ETHERNET DRIVER (DP8381x)
P: Tim Hockin
M: thockin@hockin.org
@ -2830,8 +2868,8 @@ S: Maintained
NETEFFECT IWARP RNIC DRIVER (IW_NES)
P: Faisal Latif
M: flatif@neteffect.com
P: Nishi Gupta
M: ngupta@neteffect.com
P: Chien Tung
M: ctung@neteffect.com
P: Glenn Streiff
M: gstreiff@neteffect.com
L: general@lists.openfabrics.org
@ -3085,7 +3123,7 @@ S: Maintained
PARISC ARCHITECTURE
P: Kyle McMartin
M: kyle@parisc-linux.org
M: kyle@mcmartin.ca
P: Matthew Wilcox
M: matthew@wil.cx
P: Grant Grundler
@ -3123,14 +3161,14 @@ PCI ERROR RECOVERY
P: Linas Vepstas
M: linas@austin.ibm.com
L: linux-kernel@vger.kernel.org
L: linux-pci@atrey.karlin.mff.cuni.cz
L: linux-pci@vger.kernel.org
S: Supported
PCI SUBSYSTEM
P: Jesse Barnes
M: jbarnes@virtuousgeek.org
L: linux-kernel@vger.kernel.org
L: linux-pci@atrey.karlin.mff.cuni.cz
L: linux-pci@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/jbarnes/pci-2.6.git
S: Supported
@ -3159,8 +3197,8 @@ L: netdev@vger.kernel.org
S: Maintained
PER-TASK DELAY ACCOUNTING
P: Shailabh Nagar
M: nagar@watson.ibm.com
P: Balbir Singh
M: balbir@linux.vnet.ibm.com
L: linux-kernel@vger.kernel.org
S: Maintained
@ -3229,7 +3267,7 @@ S: Maintained
PPP OVER ETHERNET
P: Michal Ostrowski
M: mostrows@speakeasy.net
M: mostrows@earthlink.net
S: Maintained
PPP OVER L2TP
@ -3294,9 +3332,11 @@ L: video4linux-list@redhat.com
W: http://www.isely.net/pvrusb2/
S: Maintained
PXA2xx SUPPORT
P: Nicolas Pitre
M: nico@cam.org
PXA2xx/PXA3xx SUPPORT
P: Eric Miao
M: eric.miao@marvell.com
P: Russell King
M: linux@arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
S: Maintained
@ -3403,10 +3443,7 @@ L: rtc-linux@googlegroups.com
S: Maintained
REISERFS FILE SYSTEM
P: Hans Reiser
M: reiserfs-dev@namesys.com
L: reiserfs-devel@vger.kernel.org
W: http://www.namesys.com
S: Supported
RFKILL
@ -3626,13 +3663,6 @@ M: romieu@fr.zoreil.com
L: netdev@vger.kernel.org
S: Maintained
SIS 5513 IDE CONTROLLER DRIVER
P: Lionel Bouton
M: Lionel.Bouton@inet6.fr
W: http://inet6.dyn.dhs.org/sponsoring/sis5513/index.html
W: http://gyver.homeip.net/sis5513/index.html
S: Maintained
SIS 900/7016 FAST ETHERNET DRIVER
P: Daniele Venzano
M: venza@brownhat.org
@ -3660,7 +3690,7 @@ S: Maintained
SLAB ALLOCATOR
P: Christoph Lameter
M: clameter@sgi.com
M: cl@linux-foundation.org
P: Pekka Enberg
M: penberg@cs.helsinki.fi
P: Matt Mackall
@ -3757,6 +3787,14 @@ M: dbrownell@users.sourceforge.net
L: spi-devel-general@lists.sourceforge.net
S: Maintained
SPU FILE SYSTEM
P: Jeremy Kerr
M: jk@ozlabs.org
L: linuxppc-dev@ozlabs.org
L: cbe-oss-dev@ozlabs.org
W: http://www.ibm.com/developerworks/power/cell/
S: Supported
STABLE BRANCH:
P: Greg Kroah-Hartman
M: greg@kroah.com
@ -3862,8 +3900,8 @@ M: hch@infradead.org
S: Maintained
TASKSTATS STATISTICS INTERFACE
P: Shailabh Nagar
M: nagar@watson.ibm.com
P: Balbir Singh
M: balbir@linux.vnet.ibm.com
L: linux-kernel@vger.kernel.org
S: Maintained
@ -3959,7 +3997,8 @@ W: http://www.buzzard.org.uk/toshiba/
S: Maintained
TPM DEVICE DRIVER
P: Kylene Hall
P: Debora Velarde
P: Rajiv Andrade
M: tpmdd-devel@lists.sourceforge.net
W: http://tpmdd.sourceforge.net
P: Marcel Selhorst
@ -3990,7 +4029,7 @@ TULIP NETWORK DRIVERS
P: Grant Grundler
M: grundler@parisc-linux.org
P: Kyle McMartin
M: kyle@parisc-linux.org
M: kyle@mcmartin.ca
L: netdev@vger.kernel.org
S: Maintained
@ -4012,12 +4051,41 @@ M: ballabio_dario@emc.com
L: linux-scsi@vger.kernel.org
S: Maintained
UCLINUX (AND M68KNOMMU)
P: Greg Ungerer
M: gerg@uclinux.org
W: http://www.uclinux.org/
L: uclinux-dev@uclinux.org (subscribers-only)
S: Maintained
UCLINUX FOR NEC V850
P: Miles Bader
UCLINUX FOR RENESAS H8/300
P: Yoshinori Sato
M: ysato@users.sourceforge.jp
W: http://uclinux-h8.sourceforge.jp/
S: Supported
UDF FILESYSTEM
P: Jan Kara
M: jack@suse.cz
W: http://linux-udf.sourceforge.net
S: Maintained
UFS FILESYSTEM
P: Evgeniy Dushistov
M: dushistov@mail.ru
L: linux-kernel@vger.kernel.org
S: Maintained
UltraSPARC (sparc64):
P: David S. Miller
M: davem@davemloft.net
L: sparclinux@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6.git
S: Maintained
UNIFORM CDROM DRIVER
P: Jens Axboe
M: axboe@kernel.dk
@ -4051,6 +4119,12 @@ L: linux-usb@vger.kernel.org
S: Maintained
W: http://www.kroah.com/linux-usb/
USB CYPRESS C67X00 DRIVER
P: Peter Korsgaard
M: jacmet@sunsite.dk
L: linux-usb@vger.kernel.org
S: Maintained
USB DAVICOM DM9601 DRIVER
P: Peter Korsgaard
M: jacmet@sunsite.dk
@ -4058,6 +4132,13 @@ L: netdev@vger.kernel.org
W: http://www.linux-usb.org/usbnet
S: Maintained
USB DIAMOND RIO500 DRIVER
P: Cesar Miquel
M: miquel@df.uba.ar
L: rio500-users@lists.sourceforge.net
W: http://rio500.sourceforge.net
S: Maintained
USB EHCI DRIVER
P: David Brownell
M: dbrownell@users.sourceforge.net
@ -4236,6 +4317,14 @@ L: netdev@vger.kernel.org
W: http://www.linux-usb.org/usbnet
S: Maintained
USB VIDEO CLASS
P: Laurent Pinchart
M: laurent.pinchart@skynet.be
L: linx-uvc-devel@berlios.de
L: video4linux-list@redhat.com
W: http://linux-uvc.berlios.de
S: Maintained
USB W996[87]CF DRIVER
P: Luca Risolia
M: luca.risolia@studio.unibo.it
@ -4289,6 +4378,14 @@ M: gregkh@suse.de
L: linux-kernel@vger.kernel.org
S: Maintained
UTIL-LINUX-NG PACKAGE
P: Karel Zak
M: kzak@redhat.com
L: util-linux-ng@vger.kernel.org
W: http://kernel.org/~kzak/util-linux-ng/
T: git://git.kernel.org/pub/scm/utils/util-linux-ng/util-linux-ng.git
S: Maintained
VFAT/FAT/MSDOS FILESYSTEM:
P: OGAWA Hirofumi
M: hirofumi@mail.parknet.co.jp
@ -4312,42 +4409,6 @@ M: romieu@fr.zoreil.com
L: netdev@vger.kernel.org
S: Maintained
UCLINUX (AND M68KNOMMU)
P: Greg Ungerer
M: gerg@uclinux.org
W: http://www.uclinux.org/
L: uclinux-dev@uclinux.org (subscribers-only)
S: Maintained
UCLINUX FOR NEC V850
P: Miles Bader
UCLINUX FOR RENESAS H8/300
P: Yoshinori Sato
M: ysato@users.sourceforge.jp
W: http://uclinux-h8.sourceforge.jp/
S: Supported
UFS FILESYSTEM
P: Evgeniy Dushistov
M: dushistov@mail.ru
L: linux-kernel@vger.kernel.org
S: Maintained
UltraSPARC (sparc64):
P: David S. Miller
M: davem@davemloft.net
L: sparclinux@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6.git
S: Maintained
USB DIAMOND RIO500 DRIVER
P: Cesar Miquel
M: miquel@df.uba.ar
L: rio500-users@lists.sourceforge.net
W: http://rio500.sourceforge.net
S: Maintained
VIDEO FOR LINUX
P: Mauro Carvalho Chehab
M: mchehab@infradead.org
@ -4381,10 +4442,10 @@ M: johnpol@2ka.mipt.ru
S: Maintained
W83791D HARDWARE MONITORING DRIVER
P: Charles Spirakis
M: bezaur@gmail.com
P: Marc Hulsman
M: m.hulsman@tudelft.nl
L: lm-sensors@lm-sensors.org
S: Odd Fixes
S: Maintained
W83793 HARDWARE MONITORING DRIVER
P: Rudolf Marek

15
Makefile
View File

@ -1,8 +1,8 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 25
EXTRAVERSION =
NAME = Funky Weasel is Jiggy wit it
SUBLEVEL = 26
EXTRAVERSION = -rc9
NAME = Rotary Wombat
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
@ -794,7 +794,7 @@ endif # ifdef CONFIG_KALLSYMS
quiet_cmd_vmlinux-modpost = LD $@
cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
$(vmlinux-init) --start-group $(vmlinux-main) --end-group \
$(filter-out $(vmlinux-init) $(vmlinux-main) $(vmlinux-lds) FORCE ,$^)
$(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
define rule_vmlinux-modpost
:
+$(call cmd,vmlinux-modpost)
@ -818,7 +818,9 @@ endif
ifdef CONFIG_KALLSYMS
.tmp_vmlinux1: vmlinux.o
endif
vmlinux.o: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE
modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
$(call if_changed_rule,vmlinux-modpost)
# The actual objects are generated when descending,
@ -1112,6 +1114,7 @@ MRPROPER_DIRS += include/config include2 usr/include
MRPROPER_FILES += .config .config.old include/asm .version .old_version \
include/linux/autoconf.h include/linux/version.h \
include/linux/utsrelease.h \
include/linux/bounds.h include/asm*/asm-offsets.h \
Module.symvers tags TAGS cscope*
# clean - Delete most, but leave enough to build external modules
@ -1429,7 +1432,7 @@ define xtags
elif $1 --version 2>&1 | grep -iq emacs; then \
$(all-sources) | xargs $1 -a; \
$(all-kconfigs) | xargs $1 -a \
--regex='/^[ \t]*(menu|)config[ \t]+\([a-zA-Z0-9_]+\)/\2/'; \
--regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/'; \
$(all-defconfigs) | xargs -r $1 -a \
--regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
else \

1
arch/alpha/Makefile
View File

@ -13,6 +13,7 @@ NM := $(NM) -B
LDFLAGS_vmlinux := -static -N #-relax
CHECKFLAGS += -D__alpha__ -m64
cflags-y := -pipe -mno-fp-regs -ffixed-8 -msmall-data
cflags-y += $(call cc-option, -fno-jump-tables)
cpuflags-$(CONFIG_ALPHA_EV4) := -mcpu=ev4
cpuflags-$(CONFIG_ALPHA_EV5) := -mcpu=ev5

2
arch/alpha/kernel/core_t2.c
View File

@ -74,6 +74,8 @@
# define DBG(args)
#endif
DEFINE_SPINLOCK(t2_hae_lock);
static volatile unsigned int t2_mcheck_any_expected;
static volatile unsigned int t2_mcheck_last_taken;

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

@ -9,7 +9,6 @@
static struct fs_struct init_fs = INIT_FS;
static struct files_struct init_files = INIT_FILES;
static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
struct mm_struct init_mm = INIT_MM(init_mm);

69
arch/alpha/kernel/osf_sys.c
View File

@ -981,27 +981,18 @@ asmlinkage int
osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp,
struct timeval32 __user *tvp)
{
fd_set_bits fds;
char *bits;
size_t size;
long timeout;
int ret = -EINVAL;
struct fdtable *fdt;
int max_fds;
timeout = MAX_SCHEDULE_TIMEOUT;
s64 timeout = MAX_SCHEDULE_TIMEOUT;
if (tvp) {
time_t sec, usec;
if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp))
|| __get_user(sec, &tvp->tv_sec)
|| __get_user(usec, &tvp->tv_usec)) {
ret = -EFAULT;
goto out_nofds;
return -EFAULT;
}
if (sec < 0 || usec < 0)
goto out_nofds;
return -EINVAL;
if ((unsigned long) sec < MAX_SELECT_SECONDS) {
timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
@ -1009,60 +1000,8 @@ osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp,
}
}
rcu_read_lock();
fdt = files_fdtable(current->files);
max_fds = fdt->max_fds;
rcu_read_unlock();
if (n < 0 || n > max_fds)
goto out_nofds;
/*
* We need 6 bitmaps (in/out/ex for both incoming and outgoing),
* since we used fdset we need to allocate memory in units of
* long-words.
*/
ret = -ENOMEM;
size = FDS_BYTES(n);
bits = kmalloc(6 * size, GFP_KERNEL);
if (!bits)
goto out_nofds;
fds.in = (unsigned long *) bits;
fds.out = (unsigned long *) (bits + size);
fds.ex = (unsigned long *) (bits + 2*size);
fds.res_in = (unsigned long *) (bits + 3*size);
fds.res_out = (unsigned long *) (bits + 4*size);
fds.res_ex = (unsigned long *) (bits + 5*size);
if ((ret = get_fd_set(n, inp->fds_bits, fds.in)) ||
(ret = get_fd_set(n, outp->fds_bits, fds.out)) ||
(ret = get_fd_set(n, exp->fds_bits, fds.ex)))
goto out;
zero_fd_set(n, fds.res_in);
zero_fd_set(n, fds.res_out);
zero_fd_set(n, fds.res_ex);
ret = do_select(n, &fds, &timeout);
/* OSF does not copy back the remaining time. */
if (ret < 0)
goto out;
if (!ret) {
ret = -ERESTARTNOHAND;
if (signal_pending(current))
goto out;
ret = 0;
}
if (set_fd_set(n, inp->fds_bits, fds.res_in) ||
set_fd_set(n, outp->fds_bits, fds.res_out) ||
set_fd_set(n, exp->fds_bits, fds.res_ex))
ret = -EFAULT;
out:
kfree(bits);
out_nofds:
return ret;
return core_sys_select(n, inp, outp, exp, &timeout);
}
struct rusage32 {

17
arch/alpha/kernel/pci.c
View File

@ -71,6 +71,23 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82378, quirk_i
static void __init
quirk_cypress(struct pci_dev *dev)
{
/* The Notorious Cy82C693 chip. */
/* The generic legacy mode IDE fixup in drivers/pci/probe.c
doesn't work correctly with the Cypress IDE controller as
it has non-standard register layout. Fix that. */
if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE) {
dev->resource[2].start = dev->resource[3].start = 0;
dev->resource[2].end = dev->resource[3].end = 0;
dev->resource[2].flags = dev->resource[3].flags = 0;
if (PCI_FUNC(dev->devfn) == 2) {
dev->resource[0].start = 0x170;
dev->resource[0].end = 0x177;
dev->resource[1].start = 0x376;
dev->resource[1].end = 0x376;
}
}
/* The Cypress bridge responds on the PCI bus in the address range
0xffff0000-0xffffffff (conventional x86 BIOS ROM). There is no
way to turn this off. The bridge also supports several extended

3
arch/alpha/kernel/traps.c
View File

@ -447,7 +447,7 @@ struct unaligned_stat {
/* Macro for exception fixup code to access integer registers. */
#define una_reg(r) (regs->regs[(r) >= 16 && (r) <= 18 ? (r)+19 : (r)])
#define una_reg(r) (_regs[(r) >= 16 && (r) <= 18 ? (r)+19 : (r)])
asmlinkage void
@ -456,6 +456,7 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
{
long error, tmp1, tmp2, tmp3, tmp4;
unsigned long pc = regs->pc - 4;
unsigned long *_regs = regs->regs;
const struct exception_table_entry *fixup;
unaligned[0].count++;

14
arch/alpha/kernel/vmlinux.lds.S
View File

@ -25,6 +25,13 @@ SECTIONS
} :kernel
_etext = .; /* End of text section */
NOTES :kernel :note
.dummy : {
*(.dummy)
} :kernel
RODATA
/* Exception table */
. = ALIGN(16);
__ex_table : {
@ -33,13 +40,6 @@ SECTIONS
__stop___ex_table = .;
}
NOTES :kernel :note
.dummy : {
*(.dummy)
} :kernel
RODATA
/* Will be freed after init */
. = ALIGN(PAGE_SIZE);
/* Init code and data */

4
arch/arm/boot/compressed/head-xscale.S
View File

@ -33,10 +33,6 @@ __XScale_start:
bic r0, r0, #0x1000 @ clear Icache
mcr p15, 0, r0, c1, c0, 0
#ifdef CONFIG_ARCH_COTULLA_IDP
mov r7, #MACH_TYPE_COTULLA_IDP
#endif
#ifdef CONFIG_ARCH_IXP2000
mov r1, #-1
mov r0, #0xd6000000

3
arch/arm/common/dmabounce.c
View File

@ -650,7 +650,8 @@ EXPORT_SYMBOL(dma_map_sg);
EXPORT_SYMBOL(dma_unmap_sg);
EXPORT_SYMBOL(dma_sync_single_for_cpu);
EXPORT_SYMBOL(dma_sync_single_for_device);
EXPORT_SYMBOL(dma_sync_sg);
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
EXPORT_SYMBOL(dma_sync_sg_for_device);
EXPORT_SYMBOL(dmabounce_register_dev);
EXPORT_SYMBOL(dmabounce_unregister_dev);

66
arch/arm/common/locomo.c
View File

@ -321,11 +321,42 @@ static void locomo_gpio_unmask_irq(unsigned int irq)
locomo_writel(r, mapbase + LOCOMO_GIE);
}
static int GPIO_IRQ_rising_edge;
static int GPIO_IRQ_falling_edge;
static int locomo_gpio_type(unsigned int irq, unsigned int type)
{
unsigned int mask;
void __iomem *mapbase = get_irq_chip_data(irq);
mask = 1 << (irq - LOCOMO_IRQ_GPIO_START);
if (type == IRQT_PROBE) {
if ((GPIO_IRQ_rising_edge | GPIO_IRQ_falling_edge) & mask)
return 0;
type = __IRQT_RISEDGE | __IRQT_FALEDGE;
}
if (type & __IRQT_RISEDGE)
GPIO_IRQ_rising_edge |= mask;
else
GPIO_IRQ_rising_edge &= ~mask;
if (type & __IRQT_FALEDGE)
GPIO_IRQ_falling_edge |= mask;
else
GPIO_IRQ_falling_edge &= ~mask;
locomo_writel(GPIO_IRQ_rising_edge, mapbase + LOCOMO_GRIE);
locomo_writel(GPIO_IRQ_falling_edge, mapbase + LOCOMO_GFIE);
return 0;
}
static struct irq_chip locomo_gpio_chip = {
.name = "LOCOMO-gpio",
.ack = locomo_gpio_ack_irq,
.mask = locomo_gpio_mask_irq,
.unmask = locomo_gpio_unmask_irq,
.name = "LOCOMO-gpio",
.ack = locomo_gpio_ack_irq,
.mask = locomo_gpio_mask_irq,
.unmask = locomo_gpio_unmask_irq,
.set_type = locomo_gpio_type,
};
static void locomo_lt_handler(unsigned int irq, struct irq_desc *desc)
@ -450,22 +481,18 @@ static void locomo_setup_irq(struct locomo *lchip)
set_irq_chip(IRQ_LOCOMO_KEY_BASE, &locomo_chip);
set_irq_chip_data(IRQ_LOCOMO_KEY_BASE, irqbase);
set_irq_chained_handler(IRQ_LOCOMO_KEY_BASE, locomo_key_handler);
set_irq_flags(IRQ_LOCOMO_KEY_BASE, IRQF_VALID | IRQF_PROBE);
set_irq_chip(IRQ_LOCOMO_GPIO_BASE, &locomo_chip);
set_irq_chip_data(IRQ_LOCOMO_GPIO_BASE, irqbase);
set_irq_chained_handler(IRQ_LOCOMO_GPIO_BASE, locomo_gpio_handler);
set_irq_flags(IRQ_LOCOMO_GPIO_BASE, IRQF_VALID | IRQF_PROBE);
set_irq_chip(IRQ_LOCOMO_LT_BASE, &locomo_chip);
set_irq_chip_data(IRQ_LOCOMO_LT_BASE, irqbase);
set_irq_chained_handler(IRQ_LOCOMO_LT_BASE, locomo_lt_handler);
set_irq_flags(IRQ_LOCOMO_LT_BASE, IRQF_VALID | IRQF_PROBE);
set_irq_chip(IRQ_LOCOMO_SPI_BASE, &locomo_chip);
set_irq_chip_data(IRQ_LOCOMO_SPI_BASE, irqbase);
set_irq_chained_handler(IRQ_LOCOMO_SPI_BASE, locomo_spi_handler);
set_irq_flags(IRQ_LOCOMO_SPI_BASE, IRQF_VALID | IRQF_PROBE);
/* install handlers for IRQ_LOCOMO_KEY_BASE generated interrupts */
set_irq_chip(LOCOMO_IRQ_KEY_START, &locomo_key_chip);
@ -488,7 +515,7 @@ static void locomo_setup_irq(struct locomo *lchip)
set_irq_flags(LOCOMO_IRQ_LT_START, IRQF_VALID | IRQF_PROBE);
/* install handlers for IRQ_LOCOMO_SPI_BASE generated interrupts */
for (irq = LOCOMO_IRQ_SPI_START; irq < LOCOMO_IRQ_SPI_START + 3; irq++) {
for (irq = LOCOMO_IRQ_SPI_START; irq < LOCOMO_IRQ_SPI_START + 4; irq++) {
set_irq_chip(irq, &locomo_spi_chip);
set_irq_chip_data(irq, irqbase);
set_irq_handler(irq, handle_edge_irq);
@ -574,20 +601,20 @@ static int locomo_suspend(struct platform_device *dev, pm_message_t state)
save->LCM_GPO = locomo_readl(lchip->base + LOCOMO_GPO); /* GPIO */
locomo_writel(0x00, lchip->base + LOCOMO_GPO);
save->LCM_SPICT = locomo_readl(lchip->base + LOCOMO_SPICT); /* SPI */
save->LCM_SPICT = locomo_readl(lchip->base + LOCOMO_SPI + LOCOMO_SPICT); /* SPI */
locomo_writel(0x40, lchip->base + LOCOMO_SPICT);
save->LCM_GPE = locomo_readl(lchip->base + LOCOMO_GPE); /* GPIO */
locomo_writel(0x00, lchip->base + LOCOMO_GPE);
save->LCM_ASD = locomo_readl(lchip->base + LOCOMO_ASD); /* ADSTART */
locomo_writel(0x00, lchip->base + LOCOMO_ASD);
save->LCM_SPIMD = locomo_readl(lchip->base + LOCOMO_SPIMD); /* SPI */
locomo_writel(0x3C14, lchip->base + LOCOMO_SPIMD);
save->LCM_SPIMD = locomo_readl(lchip->base + LOCOMO_SPI + LOCOMO_SPIMD); /* SPI */
locomo_writel(0x3C14, lchip->base + LOCOMO_SPI + LOCOMO_SPIMD);
locomo_writel(0x00, lchip->base + LOCOMO_PAIF);
locomo_writel(0x00, lchip->base + LOCOMO_DAC);
locomo_writel(0x00, lchip->base + LOCOMO_BACKLIGHT + LOCOMO_TC);
if ( (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT0) & 0x88) && (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT1) & 0x88) )
if ((locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT0) & 0x88) && (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT1) & 0x88))
locomo_writel(0x00, lchip->base + LOCOMO_C32K); /* CLK32 off */
else
/* 18MHz already enabled, so no wait */
@ -616,10 +643,10 @@ static int locomo_resume(struct platform_device *dev)
spin_lock_irqsave(&lchip->lock, flags);
locomo_writel(save->LCM_GPO, lchip->base + LOCOMO_GPO);
locomo_writel(save->LCM_SPICT, lchip->base + LOCOMO_SPICT);
locomo_writel(save->LCM_SPICT, lchip->base + LOCOMO_SPI + LOCOMO_SPICT);
locomo_writel(save->LCM_GPE, lchip->base + LOCOMO_GPE);
locomo_writel(save->LCM_ASD, lchip->base + LOCOMO_ASD);
locomo_writel(save->LCM_SPIMD, lchip->base + LOCOMO_SPIMD);
locomo_writel(save->LCM_SPIMD, lchip->base + LOCOMO_SPI + LOCOMO_SPIMD);
locomo_writel(0x00, lchip->base + LOCOMO_C32K);
locomo_writel(0x90, lchip->base + LOCOMO_TADC);
@ -688,9 +715,9 @@ __locomo_probe(struct device *me, struct resource *mem, int irq)
/* GPIO */
locomo_writel(0, lchip->base + LOCOMO_GPO);
locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14))
locomo_writel((LOCOMO_GPIO(1) | LOCOMO_GPIO(2) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14))
, lchip->base + LOCOMO_GPE);
locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14))
locomo_writel((LOCOMO_GPIO(1) | LOCOMO_GPIO(2) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14))
, lchip->base + LOCOMO_GPD);
locomo_writel(0, lchip->base + LOCOMO_GIE);
@ -833,7 +860,10 @@ void locomo_gpio_set_dir(struct device *dev, unsigned int bits, unsigned int dir
spin_lock_irqsave(&lchip->lock, flags);
r = locomo_readl(lchip->base + LOCOMO_GPD);
r &= ~bits;
if (dir)
r |= bits;
else
r &= ~bits;
locomo_writel(r, lchip->base + LOCOMO_GPD);
r = locomo_readl(lchip->base + LOCOMO_GPE);

2
arch/arm/kernel/armksyms.c
View File

@ -179,3 +179,5 @@ EXPORT_SYMBOL(_find_next_zero_bit_be);
EXPORT_SYMBOL(_find_first_bit_be);
EXPORT_SYMBOL(_find_next_bit_be);
#endif
EXPORT_SYMBOL(copy_page);

2
arch/arm/kernel/arthur.c
View File

@ -90,3 +90,5 @@ static void __exit arthur_exit(void)
module_init(arthur_init);
module_exit(arthur_exit);
MODULE_LICENSE("GPL");

1
arch/arm/kernel/init_task.c
View File

@ -13,7 +13,6 @@
#include <asm/pgtable.h>
static struct fs_struct init_fs = INIT_FS;
static struct files_struct init_files = INIT_FILES;
static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
struct mm_struct init_mm = INIT_MM(init_mm);

17
arch/arm/kernel/sys_arm.c
View File

@ -34,23 +34,6 @@ extern unsigned long do_mremap(unsigned long addr, unsigned long old_len,
unsigned long new_len, unsigned long flags,
unsigned long new_addr);
/*
* sys_pipe() is the normal C calling standard for creating
* a pipe. It's not the way unix traditionally does this, though.
*/
asmlinkage int sys_pipe(unsigned long __user *fildes)
{
int fd[2];
int error;
error = do_pipe(fd);
if (!error) {
if (copy_to_user(fildes, fd, 2*sizeof(int)))
error = -EFAULT;
}
return error;
}
/* common code for old and new mmaps */
inline long do_mmap2(
unsigned long addr, unsigned long len,

4
arch/arm/mach-at91/at91sam9261_devices.c
View File

@ -544,10 +544,10 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
struct resource *fb_res = &lcdc_resources[2];
size_t fb_len = fb_res->end - fb_res->start + 1;
fb = ioremap_writecombine(fb_res->start, fb_len);
fb = ioremap(fb_res->start, fb_len);
if (fb) {
memset(fb, 0, fb_len);
iounmap(fb, fb_len);
iounmap(fb);
}
}
lcdc_data = *data;

21
arch/arm/mach-at91/at91sam9rl_devices.c
View File

@ -332,13 +332,6 @@ static struct resource lcdc_resources[] = {
.end = AT91SAM9RL_ID_LCDC,
.flags = IORESOURCE_IRQ,
},
#if defined(CONFIG_FB_INTSRAM)
[2] = {
.start = AT91SAM9RL_SRAM_BASE,
.end = AT91SAM9RL_SRAM_BASE + AT91SAM9RL_SRAM_SIZE - 1,
.flags = IORESOURCE_MEM,
},
#endif
};
static struct platform_device at91_lcdc_device = {
@ -381,20 +374,6 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
at91_set_B_periph(AT91_PIN_PC24, 0); /* LCDD22 */
at91_set_B_periph(AT91_PIN_PC25, 0); /* LCDD23 */
#ifdef CONFIG_FB_INTSRAM
{
void __iomem *fb;
struct resource *fb_res = &lcdc_resources[2];
size_t fb_len = fb_res->end - fb_res->start + 1;
fb = ioremap_writecombine(fb_res->start, fb_len);
if (fb) {
memset(fb, 0, fb_len);
iounmap(fb, fb_len);
}
}
#endif
lcdc_data = *data;
platform_device_register(&at91_lcdc_device);
}

18
arch/arm/mach-at91/at91x40.c
View File

@ -16,16 +16,32 @@
#include <asm/mach/arch.h>
#include <asm/arch/at91x40.h>
#include <asm/arch/at91_st.h>
#include <asm/arch/timex.h>
#include "generic.h"
/*
* This is used in the gpio code, stub locally.
* Export the clock functions for the AT91X40. Some external code common
* to all AT91 family parts relys on this, like the gpio and serial support.
*/
int clk_enable(struct clk *clk)
{
return 0;
}
void clk_disable(struct clk *clk)
{
}
unsigned long clk_get_rate(struct clk *clk)
{
return AT91X40_MASTER_CLOCK;
}
struct clk *clk_get(struct device *dev, const char *id)
{
return NULL;
}
void __init at91x40_initialize(unsigned long main_clock)
{
at91_extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1)

2
arch/arm/mach-ep93xx/core.c
View File

@ -280,7 +280,7 @@ static int ep93xx_gpio_irq_type(unsigned int irq, unsigned int type)
const int port = gpio >> 3;
const int port_mask = 1 << (gpio & 7);
gpio_direction_output(gpio, gpio_get_value(gpio));
gpio_direction_input(gpio);
switch (type) {
case IRQT_RISING:

3
arch/arm/mach-integrator/impd1.c
View File

@ -369,7 +369,8 @@ static int impd1_probe(struct lm_device *dev)
lm_set_drvdata(dev, impd1);
printk("IM-PD1 found at 0x%08lx\n", dev->resource.start);
printk("IM-PD1 found at 0x%08lx\n",
(unsigned long)dev->resource.start);
for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) {
impd1->vcos[i].owner = THIS_MODULE,

2
arch/arm/mach-integrator/pci_v3.c
View File

@ -405,7 +405,6 @@ v3_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
addr, fsr, pc, instr, __raw_readl(SC_LBFADDR), __raw_readl(SC_LBFCODE) & 255,
v3_readb(V3_LB_ISTAT));
printk(KERN_DEBUG "%s", buf);
printascii(buf);
#endif
v3_writeb(V3_LB_ISTAT, 0);
@ -447,6 +446,7 @@ static irqreturn_t v3_irq(int dummy, void *devid)
unsigned long pc = instruction_pointer(regs);
unsigned long instr = *(unsigned long *)pc;
char buf[128];
extern void printascii(const char *);
sprintf(buf, "V3 int %d: pc=0x%08lx [%08lx] LBFADDR=%08x LBFCODE=%02x "
"ISTAT=%02x\n", IRQ_AP_V3INT, pc, instr,

22
arch/arm/mach-ns9xxx/irq.c
View File

@ -62,7 +62,7 @@ static struct irq_chip ns9xxx_chip = {
#if 0
#define handle_irq handle_level_irq
#else
void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
static void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
{
unsigned int cpu = smp_processor_id();
struct irqaction *action;
@ -70,27 +70,35 @@ void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
spin_lock(&desc->lock);
if (unlikely(desc->status & IRQ_INPROGRESS))
goto out_unlock;
BUG_ON(desc->status & IRQ_INPROGRESS);
desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
kstat_cpu(cpu).irqs[irq]++;
action = desc->action;
if (unlikely(!action || (desc->status & IRQ_DISABLED)))
goto out_unlock;
goto out_mask;
desc->status |= IRQ_INPROGRESS;
spin_unlock(&desc->lock);
action_ret = handle_IRQ_event(irq, action);
/* XXX: There is no direct way to access noirqdebug, so check
* unconditionally for spurious irqs...
* Maybe this function should go to kernel/irq/chip.c? */
note_interrupt(irq, desc, action_ret);
spin_lock(&desc->lock);
desc->status &= ~IRQ_INPROGRESS;
if (!(desc->status & IRQ_DISABLED) && desc->chip->ack)
desc->chip->ack(irq);
out_unlock:
if (desc->status & IRQ_DISABLED)
out_mask:
desc->chip->mask(irq);
/* ack unconditionally to unmask lower prio irqs */
desc->chip->ack(irq);
spin_unlock(&desc->lock);
}
#define handle_irq handle_prio_irq

12
arch/arm/mach-omap1/board-palmte.c
View File

@ -24,7 +24,6 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/spi/tsc2102.h>
#include <linux/interrupt.h>
#include <linux/apm-emulation.h>
@ -63,7 +62,7 @@ static const int palmte_keymap[] = {
KEY(1, 1, KEY_DOWN),
KEY(1, 2, KEY_UP),
KEY(1, 3, KEY_RIGHT),
KEY(1, 4, KEY_CENTER),
KEY(1, 4, KEY_ENTER),
0,
};
@ -315,14 +314,6 @@ static void palmte_get_power_status(struct apm_power_info *info, int *battery)
#define palmte_get_power_status NULL
#endif
static struct tsc2102_config palmte_tsc2102_config = {
.use_internal = 0,
.monitor = TSC_BAT1 | TSC_AUX | TSC_TEMP,
.temp_at25c = { 2200, 2615 },
.apm_report = palmte_get_power_status,
.alsa_config = &palmte_alsa_config,
};
static struct omap_board_config_kernel palmte_config[] __initdata = {
{ OMAP_TAG_USB, &palmte_usb_config },
{ OMAP_TAG_MMC, &palmte_mmc_config },
@ -336,7 +327,6 @@ static struct spi_board_info palmte_spi_info[] __initdata = {
.bus_num = 2, /* uWire (officially) */
.chip_select = 0, /* As opposed to 3 */
.irq = OMAP_GPIO_IRQ(PALMTE_PINTDAV_GPIO),
.platform_data = &palmte_tsc2102_config,
.max_speed_hz = 8000000,
},
};

2
arch/arm/mach-omap1/board-palmz71.c
View File

@ -65,7 +65,7 @@ static int palmz71_keymap[] = {
KEY(1, 1, KEY_DOWN),
KEY(1, 2, KEY_UP),
KEY(1, 3, KEY_RIGHT),
KEY(1, 4, KEY_CENTER),
KEY(1, 4, KEY_ENTER),
KEY(2, 0, KEY_CAMERA),
0,
};

1
arch/arm/mach-omap2/board-2430sdp.c
View File

@ -208,6 +208,7 @@ static void __init omap_2430sdp_init(void)
static void __init omap_2430sdp_map_io(void)
{
omap2_set_globals_243x();
omap2_map_common_io();
}

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

@ -394,6 +394,7 @@ static void __init omap_apollon_init(void)
static void __init omap_apollon_map_io(void)
{
omap2_set_globals_242x();
omap2_map_common_io();
}

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

@ -65,6 +65,7 @@ static void __init omap_generic_init(void)
static void __init omap_generic_map_io(void)
{
omap2_set_globals_242x(); /* should be 242x, 243x, or 343x */
omap2_map_common_io();
}

1
arch/arm/mach-omap2/board-h4.c
View File

@ -420,6 +420,7 @@ static void __init omap_h4_init(void)
static void __init omap_h4_map_io(void)
{
omap2_set_globals_242x();
omap2_map_common_io();
}

4
arch/arm/mach-omap2/clock.c
View File

@ -205,7 +205,9 @@ static void omap2_clk_wait_ready(struct clk *clk)
/* REVISIT: What are the appropriate exclusions for 34XX? */
/* OMAP3: ignore DSS-mod clocks */
if (cpu_is_omap34xx() &&
(((u32)reg & ~0xff) == (u32)OMAP_CM_REGADDR(OMAP3430_DSS_MOD, 0)))
(((u32)reg & ~0xff) == (u32)OMAP_CM_REGADDR(OMAP3430_DSS_MOD, 0) ||
((((u32)reg & ~0xff) == (u32)OMAP_CM_REGADDR(CORE_MOD, 0)) &&
clk->enable_bit == OMAP3430_EN_SSI_SHIFT)))
return;
/* Check if both functional and interface clocks

21
arch/arm/mach-omap2/clock34xx.h
View File

@ -836,7 +836,8 @@ static struct clk dpll5_m2_ck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, OMAP3430ES2_CM_CLKSEL5),
.clksel_mask = OMAP3430ES2_DIV_120M_MASK,
.clksel = div16_dpll5_clksel,
.flags = CLOCK_IN_OMAP3430ES2 | RATE_PROPAGATES,
.flags = CLOCK_IN_OMAP3430ES2 | RATE_PROPAGATES |
PARENT_CONTROLS_CLOCK,
.recalc = &omap2_clksel_recalc,
};
@ -1046,12 +1047,13 @@ static struct clk iva2_ck = {
.name = "iva2_ck",
.parent = &dpll2_m2_ck,
.init = &omap2_init_clksel_parent,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_IVA2_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_SHIFT,
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_IVA2_MOD,
OMAP3430_CM_IDLEST_PLL),
.clksel_mask = OMAP3430_ST_IVA2_CLK_MASK,
.clksel = iva2_clksel,
.flags = CLOCK_IN_OMAP343X | RATE_PROPAGATES |
PARENT_CONTROLS_CLOCK,
.flags = CLOCK_IN_OMAP343X | RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -1836,7 +1838,8 @@ static struct clk omapctrl_ick = {
static struct clk ssi_l4_ick = {
.name = "ssi_l4_ick",
.parent = &l4_ick,
.flags = CLOCK_IN_OMAP343X | RATE_PROPAGATES,
.flags = CLOCK_IN_OMAP343X | RATE_PROPAGATES |
PARENT_CONTROLS_CLOCK,
.recalc = &followparent_recalc,
};
@ -2344,7 +2347,7 @@ static struct clk gpio6_fck = {
.name = "gpio6_fck",
.parent = &per_32k_alwon_fck,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_PER_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_GPT6_SHIFT,
.enable_bit = OMAP3430_EN_GPIO6_SHIFT,
.flags = CLOCK_IN_OMAP343X,
.recalc = &followparent_recalc,
};
@ -2353,7 +2356,7 @@ static struct clk gpio5_fck = {
.name = "gpio5_fck",
.parent = &per_32k_alwon_fck,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_PER_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_GPT5_SHIFT,
.enable_bit = OMAP3430_EN_GPIO5_SHIFT,
.flags = CLOCK_IN_OMAP343X,
.recalc = &followparent_recalc,
};
@ -2362,7 +2365,7 @@ static struct clk gpio4_fck = {
.name = "gpio4_fck",
.parent = &per_32k_alwon_fck,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_PER_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_GPT4_SHIFT,
.enable_bit = OMAP3430_EN_GPIO4_SHIFT,
.flags = CLOCK_IN_OMAP343X,
.recalc = &followparent_recalc,
};
@ -2371,7 +2374,7 @@ static struct clk gpio3_fck = {
.name = "gpio3_fck",
.parent = &per_32k_alwon_fck,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_PER_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_GPT3_SHIFT,
.enable_bit = OMAP3430_EN_GPIO3_SHIFT,
.flags = CLOCK_IN_OMAP343X,
.recalc = &followparent_recalc,
};
@ -2380,7 +2383,7 @@ static struct clk gpio2_fck = {
.name = "gpio2_fck",
.parent = &per_32k_alwon_fck,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_PER_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_GPT2_SHIFT,
.enable_bit = OMAP3430_EN_GPIO2_SHIFT,
.flags = CLOCK_IN_OMAP343X,
.recalc = &followparent_recalc,
};

1
arch/arm/mach-omap2/cm-regbits-34xx.h
View File

@ -56,6 +56,7 @@
/* CM_FCLKEN_IVA2 */
#define OMAP3430_CM_FCLKEN_IVA2_EN_IVA2 (1 << 0)
#define OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_SHIFT 0
/* CM_CLKEN_PLL_IVA2 */
#define OMAP3430_IVA2_DPLL_RAMPTIME_SHIFT 8

2
arch/arm/mach-omap2/gpmc.c
View File

@ -42,7 +42,7 @@
#define GPMC_STATUS 0x54
#define GPMC_PREFETCH_CONFIG1 0x1e0
#define GPMC_PREFETCH_CONFIG2 0x1e4
#define GPMC_PREFETCH_CONTROL 0x1e8
#define GPMC_PREFETCH_CONTROL 0x1ec
#define GPMC_PREFETCH_STATUS 0x1f0
#define GPMC_ECC_CONFIG 0x1f4
#define GPMC_ECC_CONTROL 0x1f8

25
arch/arm/mach-omap2/mailbox.c
View File

@ -70,6 +70,9 @@ struct omap_mbox2_priv {
static struct clk *mbox_ick_handle;
static void omap2_mbox_enable_irq(struct omap_mbox *mbox,
omap_mbox_type_t irq);
static inline unsigned int mbox_read_reg(unsigned int reg)
{
return __raw_readl(mbox_base + reg);
@ -81,7 +84,7 @@ static inline void mbox_write_reg(unsigned int val, unsigned int reg)
}
/* Mailbox H/W preparations */
static inline int omap2_mbox_startup(struct omap_mbox *mbox)
static int omap2_mbox_startup(struct omap_mbox *mbox)
{
unsigned int l;
@ -97,38 +100,40 @@ static inline int omap2_mbox_startup(struct omap_mbox *mbox)
l |= 0x00000011;
mbox_write_reg(l, MAILBOX_SYSCONFIG);
omap2_mbox_enable_irq(mbox, IRQ_RX);
return 0;
}
static inline void omap2_mbox_shutdown(struct omap_mbox *mbox)
static void omap2_mbox_shutdown(struct omap_mbox *mbox)
{
clk_disable(mbox_ick_handle);
clk_put(mbox_ick_handle);
}
/* Mailbox FIFO handle functions */
static inline mbox_msg_t omap2_mbox_fifo_read(struct omap_mbox *mbox)
static mbox_msg_t omap2_mbox_fifo_read(struct omap_mbox *mbox)
{
struct omap_mbox2_fifo *fifo =
&((struct omap_mbox2_priv *)mbox->priv)->rx_fifo;
return (mbox_msg_t) mbox_read_reg(fifo->msg);
}
static inline void omap2_mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
static void omap2_mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
{
struct omap_mbox2_fifo *fifo =
&((struct omap_mbox2_priv *)mbox->priv)->tx_fifo;
mbox_write_reg(msg, fifo->msg);
}
static inline int omap2_mbox_fifo_empty(struct omap_mbox *mbox)
static int omap2_mbox_fifo_empty(struct omap_mbox *mbox)
{
struct omap_mbox2_fifo *fifo =
&((struct omap_mbox2_priv *)mbox->priv)->rx_fifo;
return (mbox_read_reg(fifo->msg_stat) == 0);
}
static inline int omap2_mbox_fifo_full(struct omap_mbox *mbox)
static int omap2_mbox_fifo_full(struct omap_mbox *mbox)
{
struct omap_mbox2_fifo *fifo =
&((struct omap_mbox2_priv *)mbox->priv)->tx_fifo;
@ -136,7 +141,7 @@ static inline int omap2_mbox_fifo_full(struct omap_mbox *mbox)
}
/* Mailbox IRQ handle functions */
static inline void omap2_mbox_enable_irq(struct omap_mbox *mbox,
static void omap2_mbox_enable_irq(struct omap_mbox *mbox,
omap_mbox_type_t irq)
{
struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
@ -147,7 +152,7 @@ static inline void omap2_mbox_enable_irq(struct omap_mbox *mbox,
mbox_write_reg(l, p->irqenable);
}
static inline void omap2_mbox_disable_irq(struct omap_mbox *mbox,
static void omap2_mbox_disable_irq(struct omap_mbox *mbox,
omap_mbox_type_t irq)
{
struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
@ -158,7 +163,7 @@ static inline void omap2_mbox_disable_irq(struct omap_mbox *mbox,
mbox_write_reg(l, p->irqenable);
}
static inline void omap2_mbox_ack_irq(struct omap_mbox *mbox,
static void omap2_mbox_ack_irq(struct omap_mbox *mbox,
omap_mbox_type_t irq)
{
struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;
@ -167,7 +172,7 @@ static inline void omap2_mbox_ack_irq(struct omap_mbox *mbox,
mbox_write_reg(bit, p->irqstatus);
}
static inline int omap2_mbox_is_irq(struct omap_mbox *mbox,
static int omap2_mbox_is_irq(struct omap_mbox *mbox,
omap_mbox_type_t irq)
{
struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv;

2
arch/arm/mach-omap2/prm.h
View File

@ -30,7 +30,7 @@
/*
* Architecture-specific global PRM registers
* Use prm_{read,write}_reg() with these registers.
* Use __raw_{read,write}l() with these registers.
*
* With a few exceptions, these are the register names beginning with
* PRCM_* on 24xx, and PRM_* on 34xx. (The exceptions are the

66
arch/arm/mach-orion5x/addr-map.c
View File

@ -34,11 +34,7 @@
* Non-CPU Masters address decoding --
* Unlike the CPU, we setup the access from Orion's master interfaces to DDR
* banks only (the typical use case).
* Setup access for each master to DDR is issued by common.c.
*
* Note: although orion_setbits() and orion_clrbits() are not atomic
* no locking is necessary here since code in this file is only called
* at boot time when there is no concurrency issues.
* Setup access for each master to DDR is issued by platform device setup.
*/
/*
@ -48,10 +44,6 @@
#define TARGET_DEV_BUS 1
#define TARGET_PCI 3
#define TARGET_PCIE 4
#define ATTR_DDR_CS(n) (((n) ==0) ? 0xe : \
((n) == 1) ? 0xd : \
((n) == 2) ? 0xb : \
((n) == 3) ? 0x7 : 0xf)
#define ATTR_PCIE_MEM 0x59
#define ATTR_PCIE_IO 0x51
#define ATTR_PCIE_WA 0x79
@ -61,17 +53,12 @@
#define ATTR_DEV_CS1 0x1d
#define ATTR_DEV_CS2 0x1b
#define ATTR_DEV_BOOT 0xf
#define WIN_EN 1
/*
* Helpers to get DDR bank info
*/
#define DDR_BASE_CS(n) ORION5X_DDR_REG(0x1500 + ((n) * 8))
#define DDR_SIZE_CS(n) ORION5X_DDR_REG(0x1504 + ((n) * 8))
#define DDR_MAX_CS 4
#define DDR_REG_TO_SIZE(reg) (((reg) | 0xffffff) + 1)
#define DDR_REG_TO_BASE(reg) ((reg) & 0xff000000)
#define DDR_BANK_EN 1
#define DDR_BASE_CS(n) ORION5X_DDR_REG(0x1500 + ((n) << 3))
#define DDR_SIZE_CS(n) ORION5X_DDR_REG(0x1504 + ((n) << 3))
/*
* CPU Address Decode Windows registers
@ -81,17 +68,6 @@
#define CPU_WIN_REMAP_LO(n) ORION5X_BRIDGE_REG(0x008 | ((n) << 4))
#define CPU_WIN_REMAP_HI(n) ORION5X_BRIDGE_REG(0x00c | ((n) << 4))
/*
* Gigabit Ethernet Address Decode Windows registers
*/
#define ETH_WIN_BASE(win) ORION5X_ETH_REG(0x200 + ((win) * 8))
#define ETH_WIN_SIZE(win) ORION5X_ETH_REG(0x204 + ((win) * 8))
#define ETH_WIN_REMAP(win) ORION5X_ETH_REG(0x280 + ((win) * 4))
#define ETH_WIN_EN ORION5X_ETH_REG(0x290)
#define ETH_WIN_PROT ORION5X_ETH_REG(0x294)
#define ETH_MAX_WIN 6
#define ETH_MAX_REMAP_WIN 4
struct mbus_dram_target_info orion5x_mbus_dram_info;
@ -202,39 +178,3 @@ void __init orion5x_setup_pcie_wa_win(u32 base, u32 size)
{
setup_cpu_win(7, base, size, TARGET_PCIE, ATTR_PCIE_WA, -1);
}
void __init orion5x_setup_eth_wins(void)
{
int i;
/*
* First, disable and clear windows
*/
for (i = 0; i < ETH_MAX_WIN; i++) {
orion5x_write(ETH_WIN_BASE(i), 0);
orion5x_write(ETH_WIN_SIZE(i), 0);
orion5x_setbits(ETH_WIN_EN, 1 << i);
orion5x_clrbits(ETH_WIN_PROT, 0x3 << (i * 2));
if (i < ETH_MAX_REMAP_WIN)
orion5x_write(ETH_WIN_REMAP(i), 0);
}
/*
* Setup windows for DDR banks.
*/
for (i = 0; i < DDR_MAX_CS; i++) {
u32 base, size;
size = orion5x_read(DDR_SIZE_CS(i));
base = orion5x_read(DDR_BASE_CS(i));
if (size & DDR_BANK_EN) {
base = DDR_REG_TO_BASE(base);
size = DDR_REG_TO_SIZE(size);
orion5x_write(ETH_WIN_SIZE(i), (size-1) & 0xffff0000);
orion5x_write(ETH_WIN_BASE(i), (base & 0xffff0000) |
(ATTR_DDR_CS(i) << 8) |
TARGET_DDR);
orion5x_clrbits(ETH_WIN_EN, 1 << i);
orion5x_setbits(ETH_WIN_PROT, 0x3 << (i * 2));
}
}
}

11
arch/arm/mach-orion5x/common.c
View File

@ -190,6 +190,11 @@ static struct platform_device orion5x_ehci1 = {
* (The Orion and Discovery (MV643xx) families use the same Ethernet driver)
****************************************************************************/
struct mv643xx_eth_shared_platform_data orion5x_eth_shared_data = {
.dram = &orion5x_mbus_dram_info,
.t_clk = ORION5X_TCLK,
};
static struct resource orion5x_eth_shared_resources[] = {
{
.start = ORION5X_ETH_PHYS_BASE + 0x2000,
@ -201,6 +206,9 @@ static struct resource orion5x_eth_shared_resources[] = {
static struct platform_device orion5x_eth_shared = {
.name = MV643XX_ETH_SHARED_NAME,
.id = 0,
.dev = {
.platform_data = &orion5x_eth_shared_data,
},
.num_resources = 1,
.resource = orion5x_eth_shared_resources,
};
@ -223,7 +231,9 @@ static struct platform_device orion5x_eth = {
void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
{
eth_data->shared = &orion5x_eth_shared;
orion5x_eth.dev.platform_data = eth_data;
platform_device_register(&orion5x_eth_shared);
platform_device_register(&orion5x_eth);
}
@ -360,7 +370,6 @@ void __init orion5x_init(void)
* Setup Orion address map
*/
orion5x_setup_cpu_mbus_bridge();
orion5x_setup_eth_wins();
/*
* Register devices.

1
arch/arm/mach-orion5x/common.h
View File

@ -22,7 +22,6 @@ void orion5x_setup_dev0_win(u32 base, u32 size);
void orion5x_setup_dev1_win(u32 base, u32 size);
void orion5x_setup_dev2_win(u32 base, u32 size);
void orion5x_setup_pcie_wa_win(u32 base, u32 size);
void orion5x_setup_eth_wins(void);
/*
* Shared code used internally by other Orion core functions.

2
arch/arm/mach-orion5x/dns323-setup.c
View File

@ -58,7 +58,7 @@ static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci dns323_pci __initdata = {
.nr_controllers = 1,
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,

2
arch/arm/mach-orion5x/kurobox_pro-setup.c
View File

@ -138,7 +138,7 @@ static int __init kurobox_pro_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
}
static struct hw_pci kurobox_pro_pci __initdata = {
.nr_controllers = 1,
.nr_controllers = 2,
.swizzle = pci_std_swizzle,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,

12
arch/arm/mach-pxa/Makefile
View File

@ -5,6 +5,13 @@
# Common support (must be linked before board specific support)
obj-y += clock.o devices.o generic.o irq.o dma.o \
time.o gpio.o
obj-$(CONFIG_PM) += pm.o sleep.o standby.o
obj-$(CONFIG_CPU_FREQ) += cpu-pxa.o
# Generic drivers that other drivers may depend upon
obj-$(CONFIG_PXA_SSP) += ssp.o
# SoC-specific code
obj-$(CONFIG_PXA25x) += mfp-pxa2xx.o pxa25x.o
obj-$(CONFIG_PXA27x) += mfp-pxa2xx.o pxa27x.o
obj-$(CONFIG_PXA3xx) += mfp-pxa3xx.o pxa3xx.o smemc.o
@ -48,11 +55,6 @@ led-$(CONFIG_MACH_TRIZEPS4) += leds-trizeps4.o
obj-$(CONFIG_LEDS) += $(led-y)
# Misc features
obj-$(CONFIG_PM) += pm.o sleep.o standby.o
obj-$(CONFIG_CPU_FREQ) += cpu-pxa.o
obj-$(CONFIG_PXA_SSP) += ssp.o
ifeq ($(CONFIG_PCI),y)
obj-$(CONFIG_MACH_ARMCORE) += cm-x270-pci.o
endif

2
arch/arm/mach-pxa/cm-x270.c
View File

@ -59,7 +59,7 @@ static struct resource cmx270_dm9k_resource[] = {
[2] = {
.start = CMX270_ETHIRQ,
.end = CMX270_ETHIRQ,
.flags = IORESOURCE_IRQ,
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
}
};

3
arch/arm/mach-pxa/colibri.c
View File

@ -98,7 +98,7 @@ static struct resource dm9000_resources[] = {
[2] = {
.start = COLIBRI_ETH_IRQ,
.end = COLIBRI_ETH_IRQ,
.flags = IORESOURCE_IRQ,
.flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
},
};
@ -119,7 +119,6 @@ static void __init colibri_init(void)
/* DM9000 LAN */
pxa_gpio_mode(GPIO78_nCS_2_MD);
pxa_gpio_mode(GPIO_DM9000 | GPIO_IN);
set_irq_type(COLIBRI_ETH_IRQ, IRQT_FALLING);
platform_add_devices(colibri_devices, ARRAY_SIZE(colibri_devices));
}

4
arch/arm/mach-pxa/corgi.c
View File

@ -493,8 +493,6 @@ static struct platform_device *devices[] __initdata = {
static void corgi_poweroff(void)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
if (!machine_is_corgi())
/* Green LED off tells the bootloader to halt */
reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
@ -503,8 +501,6 @@ static void corgi_poweroff(void)
static void corgi_restart(char mode)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
if (!machine_is_corgi())
/* Green LED on tells the bootloader to reboot */
set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);

310
arch/arm/mach-pxa/cpu-pxa.c
View File

@ -49,125 +49,216 @@ MODULE_PARM_DESC(freq_debug, "Set the debug messages to on=1/off=0");
#define freq_debug 0
#endif
static unsigned int pxa27x_maxfreq;
module_param(pxa27x_maxfreq, uint, 0);
MODULE_PARM_DESC(pxa27x_maxfreq, "Set the pxa27x maxfreq in MHz"
"(typically 624=>pxa270, 416=>pxa271, 520=>pxa272)");
typedef struct {
unsigned int khz;
unsigned int membus;
unsigned int cccr;
unsigned int div2;
unsigned int cclkcfg;
} pxa_freqs_t;
/* Define the refresh period in mSec for the SDRAM and the number of rows */
#define SDRAM_TREF 64 /* standard 64ms SDRAM */
#define SDRAM_ROWS 4096 /* 64MB=8192 32MB=4096 */
#define MDREFR_DRI(x) (((x) * SDRAM_TREF) / (SDRAM_ROWS * 32))
#define CCLKCFG_TURBO 0x1
#define CCLKCFG_FCS 0x2
#define PXA25x_MIN_FREQ 99500
#define PXA25x_MAX_FREQ 398100
#define MDREFR_DB2_MASK (MDREFR_K2DB2 | MDREFR_K1DB2)
#define MDREFR_DRI_MASK 0xFFF
#define SDRAM_TREF 64 /* standard 64ms SDRAM */
#define SDRAM_ROWS 4096 /* 64MB=8192 32MB=4096 */
#define CCLKCFG_TURBO 0x1
#define CCLKCFG_FCS 0x2
#define CCLKCFG_HALFTURBO 0x4
#define CCLKCFG_FASTBUS 0x8
#define MDREFR_DB2_MASK (MDREFR_K2DB2 | MDREFR_K1DB2)
#define MDREFR_DRI_MASK 0xFFF
/*
* PXA255 definitions
*/
/* Use the run mode frequencies for the CPUFREQ_POLICY_PERFORMANCE policy */
#define CCLKCFG CCLKCFG_TURBO | CCLKCFG_FCS
static pxa_freqs_t pxa255_run_freqs[] =
{
/* CPU MEMBUS CCCR DIV2*/
{ 99500, 99500, 0x121, 1}, /* run= 99, turbo= 99, PXbus=50, SDRAM=50 */
{132700, 132700, 0x123, 1}, /* run=133, turbo=133, PXbus=66, SDRAM=66 */
{199100, 99500, 0x141, 0}, /* run=199, turbo=199, PXbus=99, SDRAM=99 */
{265400, 132700, 0x143, 1}, /* run=265, turbo=265, PXbus=133, SDRAM=66 */
{331800, 165900, 0x145, 1}, /* run=331, turbo=331, PXbus=166, SDRAM=83 */
{398100, 99500, 0x161, 0}, /* run=398, turbo=398, PXbus=196, SDRAM=99 */
{0,}
/* CPU MEMBUS CCCR DIV2 CCLKCFG run turbo PXbus SDRAM */
{ 99500, 99500, 0x121, 1, CCLKCFG}, /* 99, 99, 50, 50 */
{132700, 132700, 0x123, 1, CCLKCFG}, /* 133, 133, 66, 66 */
{199100, 99500, 0x141, 0, CCLKCFG}, /* 199, 199, 99, 99 */
{265400, 132700, 0x143, 1, CCLKCFG}, /* 265, 265, 133, 66 */
{331800, 165900, 0x145, 1, CCLKCFG}, /* 331, 331, 166, 83 */
{398100, 99500, 0x161, 0, CCLKCFG}, /* 398, 398, 196, 99 */
};
#define NUM_RUN_FREQS ARRAY_SIZE(pxa255_run_freqs)
static struct cpufreq_frequency_table pxa255_run_freq_table[NUM_RUN_FREQS+1];
/* Use the turbo mode frequencies for the CPUFREQ_POLICY_POWERSAVE policy */
static pxa_freqs_t pxa255_turbo_freqs[] =
{
/* CPU MEMBUS CCCR DIV2*/
{ 99500, 99500, 0x121, 1}, /* run=99, turbo= 99, PXbus=50, SDRAM=50 */
{199100, 99500, 0x221, 0}, /* run=99, turbo=199, PXbus=50, SDRAM=99 */
{298500, 99500, 0x321, 0}, /* run=99, turbo=287, PXbus=50, SDRAM=99 */
{298600, 99500, 0x1c1, 0}, /* run=199, turbo=287, PXbus=99, SDRAM=99 */
{398100, 99500, 0x241, 0}, /* run=199, turbo=398, PXbus=99, SDRAM=99 */
{0,}
/* CPU MEMBUS CCCR DIV2 CCLKCFG run turbo PXbus SDRAM */
{ 99500, 99500, 0x121, 1, CCLKCFG}, /* 99, 99, 50, 50 */
{199100, 99500, 0x221, 0, CCLKCFG}, /* 99, 199, 50, 99 */
{298500, 99500, 0x321, 0, CCLKCFG}, /* 99, 287, 50, 99 */
{298600, 99500, 0x1c1, 0, CCLKCFG}, /* 199, 287, 99, 99 */
{398100, 99500, 0x241, 0, CCLKCFG}, /* 199, 398, 99, 99 */
};
#define NUM_TURBO_FREQS ARRAY_SIZE(pxa255_turbo_freqs)
static struct cpufreq_frequency_table pxa255_turbo_freq_table[NUM_TURBO_FREQS+1];
#define NUM_PXA25x_RUN_FREQS ARRAY_SIZE(pxa255_run_freqs)
#define NUM_PXA25x_TURBO_FREQS ARRAY_SIZE(pxa255_turbo_freqs)
static struct cpufreq_frequency_table
pxa255_run_freq_table[NUM_PXA25x_RUN_FREQS+1];
static struct cpufreq_frequency_table
pxa255_turbo_freq_table[NUM_PXA25x_TURBO_FREQS+1];
/*
* PXA270 definitions
*
* For the PXA27x:
* Control variables are A, L, 2N for CCCR; B, HT, T for CLKCFG.
*
* A = 0 => memory controller clock from table 3-7,
* A = 1 => memory controller clock = system bus clock
* Run mode frequency = 13 MHz * L
* Turbo mode frequency = 13 MHz * L * N
* System bus frequency = 13 MHz * L / (B + 1)
*
* In CCCR:
* A = 1
* L = 16 oscillator to run mode ratio
* 2N = 6 2 * (turbo mode to run mode ratio)
*
* In CCLKCFG:
* B = 1 Fast bus mode
* HT = 0 Half-Turbo mode
* T = 1 Turbo mode
*
* For now, just support some of the combinations in table 3-7 of
* PXA27x Processor Family Developer's Manual to simplify frequency
* change sequences.
*/
#define PXA27x_CCCR(A, L, N2) (A << 25 | N2 << 7 | L)
#define CCLKCFG2(B, HT, T) \
(CCLKCFG_FCS | \
((B) ? CCLKCFG_FASTBUS : 0) | \
((HT) ? CCLKCFG_HALFTURBO : 0) | \
((T) ? CCLKCFG_TURBO : 0))
static pxa_freqs_t pxa27x_freqs[] = {
{104000, 104000, PXA27x_CCCR(1, 8, 2), 0, CCLKCFG2(1, 0, 1)},
{156000, 104000, PXA27x_CCCR(1, 8, 6), 0, CCLKCFG2(1, 1, 1)},
{208000, 208000, PXA27x_CCCR(0, 16, 2), 1, CCLKCFG2(0, 0, 1)},
{312000, 208000, PXA27x_CCCR(1, 16, 3), 1, CCLKCFG2(1, 0, 1)},
{416000, 208000, PXA27x_CCCR(1, 16, 4), 1, CCLKCFG2(1, 0, 1)},
{520000, 208000, PXA27x_CCCR(1, 16, 5), 1, CCLKCFG2(1, 0, 1)},
{624000, 208000, PXA27x_CCCR(1, 16, 6), 1, CCLKCFG2(1, 0, 1)}
};
#define NUM_PXA27x_FREQS ARRAY_SIZE(pxa27x_freqs)
static struct cpufreq_frequency_table
pxa27x_freq_table[NUM_PXA27x_FREQS+1];
extern unsigned get_clk_frequency_khz(int info);
static void find_freq_tables(struct cpufreq_policy *policy,
struct cpufreq_frequency_table **freq_table,
pxa_freqs_t **pxa_freqs)
{
if (cpu_is_pxa25x()) {
if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
*pxa_freqs = pxa255_run_freqs;
*freq_table = pxa255_run_freq_table;
} else if (policy->policy == CPUFREQ_POLICY_POWERSAVE) {
*pxa_freqs = pxa255_turbo_freqs;
*freq_table = pxa255_turbo_freq_table;
} else {
printk("CPU PXA: Unknown policy found. "
"Using CPUFREQ_POLICY_PERFORMANCE\n");
*pxa_freqs = pxa255_run_freqs;
*freq_table = pxa255_run_freq_table;
}
}
if (cpu_is_pxa27x()) {
*pxa_freqs = pxa27x_freqs;
*freq_table = pxa27x_freq_table;
}
}
static void pxa27x_guess_max_freq(void)
{
if (!pxa27x_maxfreq) {
pxa27x_maxfreq = 416000;
printk(KERN_INFO "PXA CPU 27x max frequency not defined "
"(pxa27x_maxfreq), assuming pxa271 with %dkHz maxfreq\n",
pxa27x_maxfreq);
} else {
pxa27x_maxfreq *= 1000;
}
}
static u32 mdrefr_dri(unsigned int freq)
{
u32 dri = 0;
if (cpu_is_pxa25x())
dri = ((freq * SDRAM_TREF) / (SDRAM_ROWS * 32));
if (cpu_is_pxa27x())
dri = ((freq * SDRAM_TREF) / (SDRAM_ROWS - 31)) / 32;
return dri;
}
/* find a valid frequency point */
static int pxa_verify_policy(struct cpufreq_policy *policy)
{
struct cpufreq_frequency_table *pxa_freqs_table;
pxa_freqs_t *pxa_freqs;
int ret;
if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
pxa_freqs_table = pxa255_run_freq_table;
} else if (policy->policy == CPUFREQ_POLICY_POWERSAVE) {
pxa_freqs_table = pxa255_turbo_freq_table;
} else {
printk("CPU PXA: Unknown policy found. "
"Using CPUFREQ_POLICY_PERFORMANCE\n");
pxa_freqs_table = pxa255_run_freq_table;
}
find_freq_tables(policy, &pxa_freqs_table, &pxa_freqs);
ret = cpufreq_frequency_table_verify(policy, pxa_freqs_table);
if (freq_debug)
pr_debug("Verified CPU policy: %dKhz min to %dKhz max\n",
policy->min, policy->max);
policy->min, policy->max);
return ret;
}
static unsigned int pxa_cpufreq_get(unsigned int cpu)
{
return get_clk_frequency_khz(0);
}
static int pxa_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
unsigned int target_freq,
unsigned int relation)
{
struct cpufreq_frequency_table *pxa_freqs_table;
pxa_freqs_t *pxa_freq_settings;
struct cpufreq_freqs freqs;
unsigned int idx;
unsigned long flags;
unsigned int unused, preset_mdrefr, postset_mdrefr;
void *ramstart = phys_to_virt(0xa0000000);
unsigned int new_freq_cpu, new_freq_mem;
unsigned int unused, preset_mdrefr, postset_mdrefr, cclkcfg;
/* Get the current policy */
if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
pxa_freq_settings = pxa255_run_freqs;
pxa_freqs_table = pxa255_run_freq_table;
} else if (policy->policy == CPUFREQ_POLICY_POWERSAVE) {
pxa_freq_settings = pxa255_turbo_freqs;
pxa_freqs_table = pxa255_turbo_freq_table;
} else {
printk("CPU PXA: Unknown policy found. "
"Using CPUFREQ_POLICY_PERFORMANCE\n");
pxa_freq_settings = pxa255_run_freqs;
pxa_freqs_table = pxa255_run_freq_table;
}
find_freq_tables(policy, &pxa_freqs_table, &pxa_freq_settings);
/* Lookup the next frequency */
if (cpufreq_frequency_table_target(policy, pxa_freqs_table,
target_freq, relation, &idx)) {
target_freq, relation, &idx)) {
return -EINVAL;
}
new_freq_cpu = pxa_freq_settings[idx].khz;
new_freq_mem = pxa_freq_settings[idx].membus;
freqs.old = policy->cur;
freqs.new = pxa_freq_settings[idx].khz;
freqs.new = new_freq_cpu;
freqs.cpu = policy->cpu;
if (freq_debug)
pr_debug(KERN_INFO "Changing CPU frequency to %d Mhz, (SDRAM %d Mhz)\n",
freqs.new / 1000, (pxa_freq_settings[idx].div2) ?
(pxa_freq_settings[idx].membus / 2000) :
(pxa_freq_settings[idx].membus / 1000));
pr_debug(KERN_INFO "Changing CPU frequency to %d Mhz, "
"(SDRAM %d Mhz)\n",
freqs.new / 1000, (pxa_freq_settings[idx].div2) ?
(new_freq_mem / 2000) : (new_freq_mem / 1000));
/*
* Tell everyone what we're about to do...
@ -177,16 +268,16 @@ static int pxa_set_target(struct cpufreq_policy *policy,
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
/* Calculate the next MDREFR. If we're slowing down the SDRAM clock
* we need to preset the smaller DRI before the change. If we're speeding
* up we need to set the larger DRI value after the change.
* we need to preset the smaller DRI before the change. If we're
* speeding up we need to set the larger DRI value after the change.
*/
preset_mdrefr = postset_mdrefr = MDREFR;
if ((MDREFR & MDREFR_DRI_MASK) > MDREFR_DRI(pxa_freq_settings[idx].membus)) {
preset_mdrefr = (preset_mdrefr & ~MDREFR_DRI_MASK) |
MDREFR_DRI(pxa_freq_settings[idx].membus);
if ((MDREFR & MDREFR_DRI_MASK) > mdrefr_dri(new_freq_mem)) {
preset_mdrefr = (preset_mdrefr & ~MDREFR_DRI_MASK);
preset_mdrefr |= mdrefr_dri(new_freq_mem);
}
postset_mdrefr = (postset_mdrefr & ~MDREFR_DRI_MASK) |
MDREFR_DRI(pxa_freq_settings[idx].membus);
postset_mdrefr =
(postset_mdrefr & ~MDREFR_DRI_MASK) | mdrefr_dri(new_freq_mem);
/* If we're dividing the memory clock by two for the SDRAM clock, this
* must be set prior to the change. Clearing the divide must be done
@ -201,26 +292,27 @@ static int pxa_set_target(struct cpufreq_policy *policy,
local_irq_save(flags);
/* Set new the CCCR */
/* Set new the CCCR and prepare CCLKCFG */
CCCR = pxa_freq_settings[idx].cccr;
cclkcfg = pxa_freq_settings[idx].cclkcfg;
asm volatile(" \n\
ldr r4, [%1] /* load MDREFR */ \n\
b 2f \n\
.align 5 \n\
.align 5 \n\
1: \n\
str %4, [%1] /* preset the MDREFR */ \n\
str %3, [%1] /* preset the MDREFR */ \n\
mcr p14, 0, %2, c6, c0, 0 /* set CCLKCFG[FCS] */ \n\
str %5, [%1] /* postset the MDREFR */ \n\
str %4, [%1] /* postset the MDREFR */ \n\
\n\
b 3f \n\
2: b 1b \n\
3: nop \n\
"
: "=&r" (unused)
: "r" (&MDREFR), "r" (CCLKCFG_TURBO|CCLKCFG_FCS), "r" (ramstart),
"r" (preset_mdrefr), "r" (postset_mdrefr)
: "r4", "r5");
: "=&r" (unused)
: "r" (&MDREFR), "r" (cclkcfg),
"r" (preset_mdrefr), "r" (postset_mdrefr)
: "r4", "r5");
local_irq_restore(flags);
/*
@ -233,38 +325,57 @@ static int pxa_set_target(struct cpufreq_policy *policy,
return 0;
}
static unsigned int pxa_cpufreq_get(unsigned int cpu)
{
return get_clk_frequency_khz(0);
}
static int pxa_cpufreq_init(struct cpufreq_policy *policy)
static __init int pxa_cpufreq_init(struct cpufreq_policy *policy)
{
int i;
unsigned int freq;
/* try to guess pxa27x cpu */
if (cpu_is_pxa27x())
pxa27x_guess_max_freq();
/* set default policy and cpuinfo */
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
policy->policy = CPUFREQ_POLICY_PERFORMANCE;
policy->cpuinfo.max_freq = PXA25x_MAX_FREQ;
policy->cpuinfo.min_freq = PXA25x_MIN_FREQ;
if (cpu_is_pxa25x())
policy->policy = CPUFREQ_POLICY_PERFORMANCE;
policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */
policy->cur = get_clk_frequency_khz(0); /* current freq */
policy->cur = get_clk_frequency_khz(0); /* current freq */
policy->min = policy->max = policy->cur;
/* Generate the run cpufreq_frequency_table struct */
for (i = 0; i < NUM_RUN_FREQS; i++) {
/* Generate pxa25x the run cpufreq_frequency_table struct */
for (i = 0; i < NUM_PXA25x_RUN_FREQS; i++) {
pxa255_run_freq_table[i].frequency = pxa255_run_freqs[i].khz;
pxa255_run_freq_table[i].index = i;
}
pxa255_run_freq_table[i].frequency = CPUFREQ_TABLE_END;
/* Generate the turbo cpufreq_frequency_table struct */
for (i = 0; i < NUM_TURBO_FREQS; i++) {
pxa255_turbo_freq_table[i].frequency = pxa255_turbo_freqs[i].khz;
/* Generate pxa25x the turbo cpufreq_frequency_table struct */
for (i = 0; i < NUM_PXA25x_TURBO_FREQS; i++) {
pxa255_turbo_freq_table[i].frequency =
pxa255_turbo_freqs[i].khz;
pxa255_turbo_freq_table[i].index = i;
}
pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END;
/* Generate the pxa27x cpufreq_frequency_table struct */
for (i = 0; i < NUM_PXA27x_FREQS; i++) {
freq = pxa27x_freqs[i].khz;
if (freq > pxa27x_maxfreq)
break;
pxa27x_freq_table[i].frequency = freq;
pxa27x_freq_table[i].index = i;
}
pxa27x_freq_table[i].frequency = CPUFREQ_TABLE_END;
/*
* Set the policy's minimum and maximum frequencies from the tables
* just constructed. This sets cpuinfo.mxx_freq, min and max.
*/
if (cpu_is_pxa25x())
cpufreq_frequency_table_cpuinfo(policy, pxa255_run_freq_table);
else if (cpu_is_pxa27x())
cpufreq_frequency_table_cpuinfo(policy, pxa27x_freq_table);
printk(KERN_INFO "PXA CPU frequency change support initialized\n");
return 0;
@ -275,26 +386,25 @@ static struct cpufreq_driver pxa_cpufreq_driver = {
.target = pxa_set_target,
.init = pxa_cpufreq_init,
.get = pxa_cpufreq_get,
.name = "PXA25x",
.name = "PXA2xx",
};
static int __init pxa_cpu_init(void)
{
int ret = -ENODEV;
if (cpu_is_pxa25x())
if (cpu_is_pxa25x() || cpu_is_pxa27x())
ret = cpufreq_register_driver(&pxa_cpufreq_driver);
return ret;
}
static void __exit pxa_cpu_exit(void)
{
if (cpu_is_pxa25x())
cpufreq_unregister_driver(&pxa_cpufreq_driver);
cpufreq_unregister_driver(&pxa_cpufreq_driver);
}
MODULE_AUTHOR ("Intrinsyc Software Inc.");
MODULE_DESCRIPTION ("CPU frequency changing driver for the PXA architecture");
MODULE_AUTHOR("Intrinsyc Software Inc.");
MODULE_DESCRIPTION("CPU frequency changing driver for the PXA architecture");
MODULE_LICENSE("GPL");
module_init(pxa_cpu_init);
module_exit(pxa_cpu_exit);

2
arch/arm/mach-pxa/em-x270.c
View File

@ -50,7 +50,7 @@ static struct resource em_x270_dm9k_resource[] = {
[2] = {
.start = EM_X270_ETHIRQ,
.end = EM_X270_ETHIRQ,
.flags = IORESOURCE_IRQ,
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
}
};

2
arch/arm/mach-pxa/lubbock.c
View File

@ -396,7 +396,7 @@ static struct pxafb_mach_info sharp_lm8v31 = {
.cmap_inverse = 0,
.cmap_static = 0,
.lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
LCD_AC_BIAS_FREQ(255);
LCD_AC_BIAS_FREQ(255),
};
#define MMC_POLL_RATE msecs_to_jiffies(1000)

10
arch/arm/mach-pxa/pm.c
View File

@ -42,20 +42,17 @@ int pxa_pm_enter(suspend_state_t state)
if (state != PM_SUSPEND_STANDBY) {
pxa_cpu_pm_fns->save(sleep_save);
/* before sleeping, calculate and save a checksum */
for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
sleep_save_checksum += sleep_save[i];
}
/* Clear reset status */
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
/* *** go zzz *** */
pxa_cpu_pm_fns->enter(state);
cpu_init();
if (state != PM_SUSPEND_STANDBY) {
/* after sleeping, validate the checksum */
for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++)
for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
checksum += sleep_save[i];
/* if invalid, display message and wait for a hardware reset */
@ -101,7 +98,8 @@ static int __init pxa_pm_init(void)
return -EINVAL;
}
sleep_save = kmalloc(pxa_cpu_pm_fns->save_size, GFP_KERNEL);
sleep_save = kmalloc(pxa_cpu_pm_fns->save_count * sizeof(unsigned long),
GFP_KERNEL);
if (!sleep_save) {
printk(KERN_ERR "failed to alloc memory for pm save\n");
return -ENOMEM;

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