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6
CREDITS
View file

@ -3642,11 +3642,9 @@ S: Beaverton, OR 97005
S: USA
N: Michal Wronski
E: wrona@mat.uni.torun.pl
W: http://www.mat.uni.torun.pl/~wrona
E: Michal.Wronski@motorola.com
D: POSIX message queues fs (with K. Benedyczak)
S: ul. Teczowa 23/12
S: 80-680 Gdansk-Sobieszewo
S: Krakow
S: Poland
N: Frank Xia

11
Documentation/Changes
View file

@ -139,9 +139,14 @@ You'll probably want to upgrade.
Ksymoops
--------
If the unthinkable happens and your kernel oopses, you'll need a 2.4
version of ksymoops to decode the report; see REPORTING-BUGS in the
root of the Linux source for more information.
If the unthinkable happens and your kernel oopses, you may need the
ksymoops tool to decode it, but in most cases you don't.
In the 2.6 kernel it is generally preferred to build the kernel with
CONFIG_KALLSYMS so that it produces readable dumps that can be used as-is
(this also produces better output than ksymoops).
If for some reason your kernel is not build with CONFIG_KALLSYMS and
you have no way to rebuild and reproduce the Oops with that option, then
you can still decode that Oops with ksymoops.
Module-Init-Tools
-----------------

2
Documentation/DocBook/Makefile
View file

@ -10,7 +10,7 @@ DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
procfs-guide.xml writing_usb_driver.xml \
sis900.xml kernel-api.xml journal-api.xml lsm.xml usb.xml \
gadget.xml libata.xml mtdnand.xml librs.xml
gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml
###
# The build process is as follows (targets):

2
Documentation/DocBook/journal-api.tmpl
View file

@ -306,7 +306,7 @@ an example.
</para>
<sect1><title>Journal Level</title>
!Efs/jbd/journal.c
!Efs/jbd/recovery.c
!Ifs/jbd/recovery.c
</sect1>
<sect1><title>Transasction Level</title>
!Efs/jbd/transaction.c

7
Documentation/DocBook/kernel-api.tmpl
View file

@ -118,7 +118,7 @@ X!Ilib/string.c
</sect1>
<sect1><title>User Space Memory Access</title>
!Iinclude/asm-i386/uaccess.h
!Iarch/i386/lib/usercopy.c
!Earch/i386/lib/usercopy.c
</sect1>
<sect1><title>More Memory Management Functions</title>
!Iinclude/linux/rmap.h
@ -174,7 +174,6 @@ X!Ilib/string.c
<title>The Linux VFS</title>
<sect1><title>The Filesystem types</title>
!Iinclude/linux/fs.h
!Einclude/linux/fs.h
</sect1>
<sect1><title>The Directory Cache</title>
!Efs/dcache.c
@ -266,7 +265,7 @@ X!Ekernel/module.c
<chapter id="hardware">
<title>Hardware Interfaces</title>
<sect1><title>Interrupt Handling</title>
!Ikernel/irq/manage.c
!Ekernel/irq/manage.c
</sect1>
<sect1><title>Resources Management</title>
@ -501,7 +500,7 @@ KAO -->
!Edrivers/video/modedb.c
</sect1>
<sect1><title>Frame Buffer Macintosh Video Mode Database</title>
!Idrivers/video/macmodes.c
!Edrivers/video/macmodes.c
</sect1>
<sect1><title>Frame Buffer Fonts</title>
<para>

160
Documentation/DocBook/rapidio.tmpl Normal file
View file

@ -0,0 +1,160 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
<!ENTITY rapidio SYSTEM "rapidio.xml">
]>
<book id="RapidIO-Guide">
<bookinfo>
<title>RapidIO Subsystem Guide</title>
<authorgroup>
<author>
<firstname>Matt</firstname>
<surname>Porter</surname>
<affiliation>
<address>
<email>mporter@kernel.crashing.org</email>
<email>mporter@mvista.com</email>
</address>
</affiliation>
</author>
</authorgroup>
<copyright>
<year>2005</year>
<holder>MontaVista Software, Inc.</holder>
</copyright>
<legalnotice>
<para>
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License version 2 as published by the Free Software Foundation.
</para>
<para>
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
</para>
<para>
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
</para>
<para>
For more details see the file COPYING in the source
distribution of Linux.
</para>
</legalnotice>
</bookinfo>
<toc></toc>
<chapter id="intro">
<title>Introduction</title>
<para>
RapidIO is a high speed switched fabric interconnect with
features aimed at the embedded market. RapidIO provides
support for memory-mapped I/O as well as message-based
transactions over the switched fabric network. RapidIO has
a standardized discovery mechanism not unlike the PCI bus
standard that allows simple detection of devices in a
network.
</para>
<para>
This documentation is provided for developers intending
to support RapidIO on new architectures, write new drivers,
or to understand the subsystem internals.
</para>
</chapter>
<chapter id="bugs">
<title>Known Bugs and Limitations</title>
<sect1>
<title>Bugs</title>
<para>None. ;)</para>
</sect1>
<sect1>
<title>Limitations</title>
<para>
<orderedlist>
<listitem><para>Access/management of RapidIO memory regions is not supported</para></listitem>
<listitem><para>Multiple host enumeration is not supported</para></listitem>
</orderedlist>
</para>
</sect1>
</chapter>
<chapter id="drivers">
<title>RapidIO driver interface</title>
<para>
Drivers are provided a set of calls in order
to interface with the subsystem to gather info
on devices, request/map memory region resources,
and manage mailboxes/doorbells.
</para>
<sect1>
<title>Functions</title>
!Iinclude/linux/rio_drv.h
!Edrivers/rapidio/rio-driver.c
!Edrivers/rapidio/rio.c
</sect1>
</chapter>
<chapter id="internals">
<title>Internals</title>
<para>
This chapter contains the autogenerated documentation of the RapidIO
subsystem.
</para>
<sect1><title>Structures</title>
!Iinclude/linux/rio.h
</sect1>
<sect1><title>Enumeration and Discovery</title>
!Idrivers/rapidio/rio-scan.c
</sect1>
<sect1><title>Driver functionality</title>
!Idrivers/rapidio/rio.c
!Idrivers/rapidio/rio-access.c
</sect1>
<sect1><title>Device model support</title>
!Idrivers/rapidio/rio-driver.c
</sect1>
<sect1><title>Sysfs support</title>
!Idrivers/rapidio/rio-sysfs.c
</sect1>
<sect1><title>PPC32 support</title>
!Iarch/ppc/kernel/rio.c
!Earch/ppc/syslib/ppc85xx_rio.c
!Iarch/ppc/syslib/ppc85xx_rio.c
</sect1>
</chapter>
<chapter id="credits">
<title>Credits</title>
<para>
The following people have contributed to the RapidIO
subsystem directly or indirectly:
<orderedlist>
<listitem><para>Matt Porter<email>mporter@kernel.crashing.org</email></para></listitem>
<listitem><para>Randy Vinson<email>rvinson@mvista.com</email></para></listitem>
<listitem><para>Dan Malek<email>dan@embeddedalley.com</email></para></listitem>
</orderedlist>
</para>
<para>
The following people have contributed to this document:
<orderedlist>
<listitem><para>Matt Porter<email>mporter@kernel.crashing.org</email></para></listitem>
</orderedlist>
</para>
</chapter>
</book>

174
Documentation/MSI-HOWTO.txt
View file

@ -10,14 +10,22 @@
This guide describes the basics of Message Signaled Interrupts (MSI),
the advantages of using MSI over traditional interrupt mechanisms,
and how to enable your driver to use MSI or MSI-X. Also included is
a Frequently Asked Questions.
a Frequently Asked Questions (FAQ) section.
1.1 Terminology
PCI devices can be single-function or multi-function. In either case,
when this text talks about enabling or disabling MSI on a "device
function," it is referring to one specific PCI device and function and
not to all functions on a PCI device (unless the PCI device has only
one function).
2. Copyright 2003 Intel Corporation
3. What is MSI/MSI-X?
Message Signaled Interrupt (MSI), as described in the PCI Local Bus
Specification Revision 2.3 or latest, is an optional feature, and a
Specification Revision 2.3 or later, is an optional feature, and a
required feature for PCI Express devices. MSI enables a device function
to request service by sending an Inbound Memory Write on its PCI bus to
the FSB as a Message Signal Interrupt transaction. Because MSI is
@ -27,7 +35,7 @@ supported.
A PCI device that supports MSI must also support pin IRQ assertion
interrupt mechanism to provide backward compatibility for systems that
do not support MSI. In Systems, which support MSI, the bus driver is
do not support MSI. In systems which support MSI, the bus driver is
responsible for initializing the message address and message data of
the device function's MSI/MSI-X capability structure during device
initial configuration.
@ -61,17 +69,17 @@ over the MSI capability structure as described below.
- MSI and MSI-X both support per-vector masking. Per-vector
masking is an optional extension of MSI but a required
feature for MSI-X. Per-vector masking provides the kernel
the ability to mask/unmask MSI when servicing its software
interrupt service routing handler. If per-vector masking is
feature for MSI-X. Per-vector masking provides the kernel the
ability to mask/unmask a single MSI while running its
interrupt service routine. If per-vector masking is
not supported, then the device driver should provide the
hardware/software synchronization to ensure that the device
generates MSI when the driver wants it to do so.
4. Why use MSI?
As a benefit the simplification of board design, MSI allows board
designers to remove out of band interrupt routing. MSI is another
As a benefit to the simplification of board design, MSI allows board
designers to remove out-of-band interrupt routing. MSI is another
step towards a legacy-free environment.
Due to increasing pressure on chipset and processor packages to
@ -87,7 +95,7 @@ support. As a result, the PCI Express technology requires MSI
support for better interrupt performance.
Using MSI enables the device functions to support two or more
vectors, which can be configured to target different CPU's to
vectors, which can be configured to target different CPUs to
increase scalability.
5. Configuring a driver to use MSI/MSI-X
@ -119,13 +127,13 @@ pci_enable_msi() explicitly.
int pci_enable_msi(struct pci_dev *dev)
With this new API, any existing device driver, which like to have
MSI enabled on its device function, must call this API to enable MSI
With this new API, a device driver that wants to have MSI
enabled on its device function must call this API to enable MSI.
A successful call will initialize the MSI capability structure
with ONE vector, regardless of whether a device function is
capable of supporting multiple messages. This vector replaces the
pre-assigned dev->irq with a new MSI vector. To avoid the conflict
of new assigned vector with existing pre-assigned vector requires
pre-assigned dev->irq with a new MSI vector. To avoid a conflict
of the new assigned vector with existing pre-assigned vector requires
a device driver to call this API before calling request_irq().
5.2.2 API pci_disable_msi
@ -137,14 +145,14 @@ when a device driver is unloading. This API restores dev->irq with
the pre-assigned IOAPIC vector and switches a device's interrupt
mode to PCI pin-irq assertion/INTx emulation mode.
Note that a device driver should always call free_irq() on MSI vector
it has done request_irq() on before calling this API. Failure to do
so results a BUG_ON() and a device will be left with MSI enabled and
Note that a device driver should always call free_irq() on the MSI vector
that it has done request_irq() on before calling this API. Failure to do
so results in a BUG_ON() and a device will be left with MSI enabled and
leaks its vector.
5.2.3 MSI mode vs. legacy mode diagram
The below diagram shows the events, which switches the interrupt
The below diagram shows the events which switch the interrupt
mode on the MSI-capable device function between MSI mode and
PIN-IRQ assertion mode.
@ -155,9 +163,9 @@ PIN-IRQ assertion mode.
------------ pci_disable_msi ------------------------
Figure 1.0 MSI Mode vs. Legacy Mode
Figure 1. MSI Mode vs. Legacy Mode
In Figure 1.0, a device operates by default in legacy mode. Legacy
In Figure 1, a device operates by default in legacy mode. Legacy
in this context means PCI pin-irq assertion or PCI-Express INTx
emulation. A successful MSI request (using pci_enable_msi()) switches
a device's interrupt mode to MSI mode. A pre-assigned IOAPIC vector
@ -166,11 +174,11 @@ assigned MSI vector will replace dev->irq.
To return back to its default mode, a device driver should always call
pci_disable_msi() to undo the effect of pci_enable_msi(). Note that a
device driver should always call free_irq() on MSI vector it has done
request_irq() on before calling pci_disable_msi(). Failure to do so
results a BUG_ON() and a device will be left with MSI enabled and
device driver should always call free_irq() on the MSI vector it has
done request_irq() on before calling pci_disable_msi(). Failure to do
so results in a BUG_ON() and a device will be left with MSI enabled and
leaks its vector. Otherwise, the PCI subsystem restores a device's
dev->irq with a pre-assigned IOAPIC vector and marks released
dev->irq with a pre-assigned IOAPIC vector and marks the released
MSI vector as unused.
Once being marked as unused, there is no guarantee that the PCI
@ -178,8 +186,8 @@ subsystem will reserve this MSI vector for a device. Depending on
the availability of current PCI vector resources and the number of
MSI/MSI-X requests from other drivers, this MSI may be re-assigned.
For the case where the PCI subsystem re-assigned this MSI vector
another driver, a request to switching back to MSI mode may result
For the case where the PCI subsystem re-assigns this MSI vector to
another driver, a request to switch back to MSI mode may result
in being assigned a different MSI vector or a failure if no more
vectors are available.
@ -208,12 +216,12 @@ Unlike the function pci_enable_msi(), the function pci_enable_msix()
does not replace the pre-assigned IOAPIC dev->irq with a new MSI
vector because the PCI subsystem writes the 1:1 vector-to-entry mapping
into the field vector of each element contained in a second argument.
Note that the pre-assigned IO-APIC dev->irq is valid only if the device
operates in PIN-IRQ assertion mode. In MSI-X mode, any attempt of
Note that the pre-assigned IOAPIC dev->irq is valid only if the device
operates in PIN-IRQ assertion mode. In MSI-X mode, any attempt at
using dev->irq by the device driver to request for interrupt service
may result unpredictabe behavior.
For each MSI-X vector granted, a device driver is responsible to call
For each MSI-X vector granted, a device driver is responsible for calling
other functions like request_irq(), enable_irq(), etc. to enable
this vector with its corresponding interrupt service handler. It is
a device driver's choice to assign all vectors with the same
@ -224,13 +232,13 @@ service handler.
The PCI 3.0 specification has implementation notes that MMIO address
space for a device's MSI-X structure should be isolated so that the
software system can set different page for controlling accesses to
the MSI-X structure. The implementation of MSI patch requires the PCI
software system can set different pages for controlling accesses to the
MSI-X structure. The implementation of MSI support requires the PCI
subsystem, not a device driver, to maintain full control of the MSI-X
table/MSI-X PBA and MMIO address space of the MSI-X table/MSI-X PBA.
A device driver is prohibited from requesting the MMIO address space
of the MSI-X table/MSI-X PBA. Otherwise, the PCI subsystem will fail
enabling MSI-X on its hardware device when it calls the function
table/MSI-X PBA (Pending Bit Array) and MMIO address space of the MSI-X
table/MSI-X PBA. A device driver is prohibited from requesting the MMIO
address space of the MSI-X table/MSI-X PBA. Otherwise, the PCI subsystem
will fail enabling MSI-X on its hardware device when it calls the function
pci_enable_msix().
5.3.2 Handling MSI-X allocation
@ -274,9 +282,9 @@ For the case where fewer MSI-X vectors are allocated to a function
than requested, the function pci_enable_msix() will return the
maximum number of MSI-X vectors available to the caller. A device
driver may re-send its request with fewer or equal vectors indicated
in a return. For example, if a device driver requests 5 vectors, but
the number of available vectors is 3 vectors, a value of 3 will be a
return as a result of pci_enable_msix() call. A function could be
in the return. For example, if a device driver requests 5 vectors, but
the number of available vectors is 3 vectors, a value of 3 will be
returned as a result of pci_enable_msix() call. A function could be
designed for its driver to use only 3 MSI-X table entries as
different combinations as ABC--, A-B-C, A--CB, etc. Note that this
patch does not support multiple entries with the same vector. Such
@ -285,49 +293,46 @@ as ABBCC, AABCC, BCCBA, etc will result as a failure by the function
pci_enable_msix(). Below are the reasons why supporting multiple
entries with the same vector is an undesirable solution.
- The PCI subsystem can not determine which entry, which
generated the message, to mask/unmask MSI while handling
- The PCI subsystem cannot determine the entry that
generated the message to mask/unmask MSI while handling
software driver ISR. Attempting to walk through all MSI-X
table entries (2048 max) to mask/unmask any match vector
is an undesirable solution.
- Walk through all MSI-X table entries (2048 max) to handle
- Walking through all MSI-X table entries (2048 max) to handle
SMP affinity of any match vector is an undesirable solution.
5.3.4 API pci_enable_msix
int pci_enable_msix(struct pci_dev *dev, u32 *entries, int nvec)
int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec)
This API enables a device driver to request the PCI subsystem
for enabling MSI-X messages on its hardware device. Depending on
to enable MSI-X messages on its hardware device. Depending on
the availability of PCI vectors resources, the PCI subsystem enables
either all or nothing.
either all or none of the requested vectors.
Argument dev points to the device (pci_dev) structure.
Argument 'dev' points to the device (pci_dev) structure.
Argument entries is a pointer of unsigned integer type. The number of
elements is indicated in argument nvec. The content of each element
will be mapped to the following struct defined in /driver/pci/msi.h.
Argument 'entries' is a pointer to an array of msix_entry structs.
The number of entries is indicated in argument 'nvec'.
struct msix_entry is defined in /driver/pci/msi.h:
struct msix_entry {
u16 vector; /* kernel uses to write alloc vector */
u16 entry; /* driver uses to specify entry */
};
A device driver is responsible for initializing the field entry of
each element with unique entry supported by MSI-X table. Otherwise,
A device driver is responsible for initializing the field 'entry' of
each element with a unique entry supported by MSI-X table. Otherwise,
-EINVAL will be returned as a result. A successful return of zero
indicates the PCI subsystem completes initializing each of requested
indicates the PCI subsystem completed initializing each of the requested
entries of the MSI-X table with message address and message data.
Last but not least, the PCI subsystem will write the 1:1
vector-to-entry mapping into the field vector of each element. A
device driver is responsible of keeping track of allocated MSI-X
vector-to-entry mapping into the field 'vector' of each element. A
device driver is responsible for keeping track of allocated MSI-X
vectors in its internal data structure.
Argument nvec is an integer indicating the number of messages
requested.
A return of zero indicates that the number of MSI-X vectors is
A return of zero indicates that the number of MSI-X vectors was
successfully allocated. A return of greater than zero indicates
MSI-X vector shortage. Or a return of less than zero indicates
a failure. This failure may be a result of duplicate entries
@ -341,12 +346,12 @@ void pci_disable_msix(struct pci_dev *dev)
This API should always be used to undo the effect of pci_enable_msix()
when a device driver is unloading. Note that a device driver should
always call free_irq() on all MSI-X vectors it has done request_irq()
on before calling this API. Failure to do so results a BUG_ON() and
on before calling this API. Failure to do so results in a BUG_ON() and
a device will be left with MSI-X enabled and leaks its vectors.
5.3.6 MSI-X mode vs. legacy mode diagram
The below diagram shows the events, which switches the interrupt
The below diagram shows the events which switch the interrupt
mode on the MSI-X capable device function between MSI-X mode and
PIN-IRQ assertion mode (legacy).
@ -356,22 +361,22 @@ PIN-IRQ assertion mode (legacy).
| | ===============> | |
------------ pci_disable_msix ------------------------
Figure 2.0 MSI-X Mode vs. Legacy Mode
Figure 2. MSI-X Mode vs. Legacy Mode
In Figure 2.0, a device operates by default in legacy mode. A
In Figure 2, a device operates by default in legacy mode. A
successful MSI-X request (using pci_enable_msix()) switches a
device's interrupt mode to MSI-X mode. A pre-assigned IOAPIC vector
stored in dev->irq will be saved by the PCI subsystem; however,
unlike MSI mode, the PCI subsystem will not replace dev->irq with
assigned MSI-X vector because the PCI subsystem already writes the 1:1
vector-to-entry mapping into the field vector of each element
vector-to-entry mapping into the field 'vector' of each element
specified in second argument.
To return back to its default mode, a device driver should always call
pci_disable_msix() to undo the effect of pci_enable_msix(). Note that
a device driver should always call free_irq() on all MSI-X vectors it
has done request_irq() on before calling pci_disable_msix(). Failure
to do so results a BUG_ON() and a device will be left with MSI-X
to do so results in a BUG_ON() and a device will be left with MSI-X
enabled and leaks its vectors. Otherwise, the PCI subsystem switches a
device function's interrupt mode from MSI-X mode to legacy mode and
marks all allocated MSI-X vectors as unused.
@ -383,53 +388,56 @@ MSI/MSI-X requests from other drivers, these MSI-X vectors may be
re-assigned.
For the case where the PCI subsystem re-assigned these MSI-X vectors
to other driver, a request to switching back to MSI-X mode may result
to other drivers, a request to switch back to MSI-X mode may result
being assigned with another set of MSI-X vectors or a failure if no
more vectors are available.
5.4 Handling function implementng both MSI and MSI-X capabilities
5.4 Handling function implementing both MSI and MSI-X capabilities
For the case where a function implements both MSI and MSI-X
capabilities, the PCI subsystem enables a device to run either in MSI
mode or MSI-X mode but not both. A device driver determines whether it
wants MSI or MSI-X enabled on its hardware device. Once a device
driver requests for MSI, for example, it is prohibited to request for
driver requests for MSI, for example, it is prohibited from requesting
MSI-X; in other words, a device driver is not permitted to ping-pong
between MSI mod MSI-X mode during a run-time.
5.5 Hardware requirements for MSI/MSI-X support
MSI/MSI-X support requires support from both system hardware and
individual hardware device functions.
5.5.1 System hardware support
Since the target of MSI address is the local APIC CPU, enabling
MSI/MSI-X support in Linux kernel is dependent on whether existing
system hardware supports local APIC. Users should verify their
system whether it runs when CONFIG_X86_LOCAL_APIC=y.
MSI/MSI-X support in the Linux kernel is dependent on whether existing
system hardware supports local APIC. Users should verify that their
system supports local APIC operation by testing that it runs when
CONFIG_X86_LOCAL_APIC=y.
In SMP environment, CONFIG_X86_LOCAL_APIC is automatically set;
however, in UP environment, users must manually set
CONFIG_X86_LOCAL_APIC. Once CONFIG_X86_LOCAL_APIC=y, setting
CONFIG_PCI_MSI enables the VECTOR based scheme and
the option for MSI-capable device drivers to selectively enable
MSI/MSI-X.
CONFIG_PCI_MSI enables the VECTOR based scheme and the option for
MSI-capable device drivers to selectively enable MSI/MSI-X.
Note that CONFIG_X86_IO_APIC setting is irrelevant because MSI/MSI-X
vector is allocated new during runtime and MSI/MSI-X support does not
depend on BIOS support. This key independency enables MSI/MSI-X
support on future IOxAPIC free platform.
support on future IOxAPIC free platforms.
5.5.2 Device hardware support
The hardware device function supports MSI by indicating the
MSI/MSI-X capability structure on its PCI capability list. By
default, this capability structure will not be initialized by
the kernel to enable MSI during the system boot. In other words,
the device function is running on its default pin assertion mode.
Note that in many cases the hardware supporting MSI have bugs,
which may result in system hang. The software driver of specific
MSI-capable hardware is responsible for whether calling
which may result in system hangs. The software driver of specific
MSI-capable hardware is responsible for deciding whether to call
pci_enable_msi or not. A return of zero indicates the kernel
successfully initializes the MSI/MSI-X capability structure of the
successfully initialized the MSI/MSI-X capability structure of the
device function. The device function is now running on MSI/MSI-X mode.
5.6 How to tell whether MSI/MSI-X is enabled on device function
@ -439,10 +447,10 @@ pci_enable_msi()/pci_enable_msix() indicates to a device driver that
its device function is initialized successfully and ready to run in
MSI/MSI-X mode.
At the user level, users can use command 'cat /proc/interrupts'
to display the vector allocated for a device and its interrupt
MSI/MSI-X mode ("PCI MSI"/"PCI MSIX"). Below shows below MSI mode is
enabled on a SCSI Adaptec 39320D Ultra320.
At the user level, users can use the command 'cat /proc/interrupts'
to display the vectors allocated for devices and their interrupt
MSI/MSI-X modes ("PCI-MSI"/"PCI-MSI-X"). Below shows MSI mode is
enabled on a SCSI Adaptec 39320D Ultra320 controller.
CPU0 CPU1
0: 324639 0 IO-APIC-edge timer
@ -453,8 +461,8 @@ enabled on a SCSI Adaptec 39320D Ultra320.
15: 1 0 IO-APIC-edge ide1
169: 0 0 IO-APIC-level uhci-hcd
185: 0 0 IO-APIC-level uhci-hcd
193: 138 10 PCI MSI aic79xx
201: 30 0 PCI MSI aic79xx
193: 138 10 PCI-MSI aic79xx
201: 30 0 PCI-MSI aic79xx
225: 30 0 IO-APIC-level aic7xxx
233: 30 0 IO-APIC-level aic7xxx
NMI: 0 0
@ -490,8 +498,8 @@ target address set as 0xfeexxxxx, as conformed to PCI
specification 2.3 or latest, then it should work.
Q4. From the driver point of view, if the MSI is lost because
of the errors occur during inbound memory write, then it may
wait for ever. Is there a mechanism for it to recover?
of errors occurring during inbound memory write, then it may
wait forever. Is there a mechanism for it to recover?
A4. Since the target of the transaction is an inbound memory
write, all transaction termination conditions (Retry,

2
Documentation/RCU/whatisRCU.txt
View file

@ -772,8 +772,6 @@ RCU pointer/list traversal:
list_for_each_entry_rcu
list_for_each_continue_rcu (to be deprecated in favor of new
list_for_each_entry_continue_rcu)
hlist_for_each_rcu (to be deprecated in favor of
hlist_for_each_entry_rcu)
hlist_for_each_entry_rcu
RCU pointer update:

7
Documentation/arm/README
View file

@ -8,10 +8,9 @@ Compilation of kernel
---------------------
In order to compile ARM Linux, you will need a compiler capable of
generating ARM ELF code with GNU extensions. GCC 2.95.1, EGCS
1.1.2, and GCC 3.3 are known to be good compilers. Fortunately, you
needn't guess. The kernel will report an error if your compiler is
a recognized offender.
generating ARM ELF code with GNU extensions. GCC 3.3 is known to be
a good compiler. Fortunately, you needn't guess. The kernel will report
an error if your compiler is a recognized offender.
To build ARM Linux natively, you shouldn't have to alter the ARCH = line
in the top level Makefile. However, if you don't have the ARM Linux ELF

4
Documentation/connector/cn_test.c
View file

@ -25,7 +25,7 @@
#include <linux/skbuff.h>
#include <linux/timer.h>
#include "connector.h"
#include <linux/connector.h>
static struct cb_id cn_test_id = { 0x123, 0x456 };
static char cn_test_name[] = "cn_test";
@ -104,7 +104,7 @@ static int cn_test_want_notify(void)
req->first = cn_test_id.val + 20;
req->range = 10;
NETLINK_CB(skb).dst_groups = ctl->group;
NETLINK_CB(skb).dst_group = ctl->group;
//netlink_broadcast(nls, skb, 0, ctl->group, GFP_ATOMIC);
netlink_unicast(nls, skb, 0, 0);

5
Documentation/device-mapper/snapshot.txt
View file

@ -19,7 +19,6 @@ There are two dm targets available: snapshot and snapshot-origin.
*) snapshot-origin <origin>
which will normally have one or more snapshots based on it.
You must create the snapshot-origin device before you can create snapshots.
Reads will be mapped directly to the backing device. For each write, the
original data will be saved in the <COW device> of each snapshot to keep
its visible content unchanged, at least until the <COW device> fills up.
@ -27,7 +26,7 @@ its visible content unchanged, at least until the <COW device> fills up.
*) snapshot <origin> <COW device> <persistent?> <chunksize>
A snapshot is created of the <origin> block device. Changed chunks of
A snapshot of the <origin> block device is created. Changed chunks of
<chunksize> sectors will be stored on the <COW device>. Writes will
only go to the <COW device>. Reads will come from the <COW device> or
from <origin> for unchanged data. <COW device> will often be
@ -37,6 +36,8 @@ the amount of free space and expand the <COW device> before it fills up.
<persistent?> is P (Persistent) or N (Not persistent - will not survive
after reboot).
The difference is that for transient snapshots less metadata must be
saved on disk - they can be kept in memory by the kernel.
How this is used by LVM2

64
Documentation/dvb/bt8xx.txt
View file

@ -1,5 +1,5 @@
How to get the Nebula, PCTV and Twinhan DST cards working
=========================================================
How to get the Nebula, PCTV, FusionHDTV Lite and Twinhan DST cards working
==========================================================================
This class of cards has a bt878a as the PCI interface, and
require the bttv driver.
@ -26,27 +26,31 @@ Furthermore you need to enable
In general you need to load the bttv driver, which will handle the gpio and
i2c communication for us, plus the common dvb-bt8xx device driver.
The frontends for Nebula (nxt6000), Pinnacle PCTV (cx24110) and
TwinHan (dst) are loaded automatically by the dvb-bt8xx device driver.
The frontends for Nebula (nxt6000), Pinnacle PCTV (cx24110), TwinHan (dst),
FusionHDTV DVB-T Lite (mt352) and FusionHDTV5 Lite (lgdt330x) are loaded
automatically by the dvb-bt8xx device driver.
3a) Nebula / Pinnacle PCTV
--------------------------
3a) Nebula / Pinnacle PCTV / FusionHDTV Lite
---------------------------------------------
$ modprobe bttv (normally bttv is being loaded automatically by kmod)
$ modprobe dvb-bt8xx (or just place dvb-bt8xx in /etc/modules for automatic loading)
$ modprobe dvb-bt8xx
(or just place dvb-bt8xx in /etc/modules for automatic loading)
3b) TwinHan and Clones
--------------------------
$ modprobe bttv i2c_hw=1 card=0x71
$ modprobe bttv card=0x71
$ modprobe dvb-bt8xx
$ modprobe dst
The value 0x71 will override the PCI type detection for dvb-bt8xx,
which is necessary for TwinHan cards.
which is necessary for TwinHan cards. Omission of this parameter might result
in a system lockup.
If you're having an older card (blue color circuit) and card=0x71 locks
If you're having an older card (blue color PCB) and card=0x71 locks up
your machine, try using 0x68, too. If that does not work, ask on the
mailing list.
@ -64,11 +68,47 @@ verbose=0 means complete disabling of messages
dst_addons takes values 0 and 0x20. A value of 0 means it is a FTA card.
0x20 means it has a Conditional Access slot.
The autodected values are determined bythe cards 'response
string' which you can see in your logs e.g.
The autodetected values are determined by the cards 'response string'
which you can see in your logs e.g.
dst_get_device_id: Recognise [DSTMCI]
If you need to sent in bug reports on the dst, please do send in a complete
log with the verbose=4 module parameter. For general usage, the default setting
of verbose=1 is ideal.
4) Multiple cards
--------------------------
If you happen to be running multiple cards, it would be advisable to load
the bttv module with the card id. This would help to solve any module loading
problems that you might face.
For example, if you have a Twinhan and Clones card along with a FusionHDTV5 Lite
$ modprobe bttv card=0x71 card=0x87
Here the order of the card id is important and should be the same as that of the
physical order of the cards. Here card=0x71 represents the Twinhan and clones
and card=0x87 represents Fusion HDTV5 Lite. These arguments can also be
specified in decimal, rather than hex:
$ modprobe bttv card=113 card=135
Some examples of card-id's
Pinnacle Sat 0x5e (94)
Nebula Digi TV 0x68 (104)
PC HDTV 0x70 (112)
Twinhan 0x71 (113)
FusionHDTV DVB-T Lite 0x80 (128)
FusionHDTV5 Lite 0x87 (135)
For a full list of card-id's, see the V4L Documentation within the kernel
source: linux/Documentation/video4linux/CARDLIST.bttv
If you have problems with this please do ask on the mailing list.
--
Authors: Richard Walker, Jamie Honan, Michael Hunold, Manu Abraham

37
Documentation/dvb/cards.txt
View file

@ -41,6 +41,12 @@ o Frontends drivers:
- dib3000mb : DiBcom 3000-MB demodulator
DVB-S/C/T:
- dst : TwinHan DST Frontend
ATSC:
- nxt200x : Nxtwave NXT2002 & NXT2004
- or51211 : or51211 based (pcHDTV HD2000 card)
- or51132 : or51132 based (pcHDTV HD3000 card)
- bcm3510 : Broadcom BCM3510
- lgdt330x : LG Electronics DT3302 & DT3303
o Cards based on the Phillips saa7146 multimedia PCI bridge chip:
@ -62,6 +68,10 @@ o Cards based on the Conexant Bt8xx PCI bridge:
- Nebula Electronics DigiTV
- TwinHan DST
- Avermedia DVB-T
- ChainTech digitop DST-1000 DVB-S
- pcHDTV HD-2000 TV
- DViCO FusionHDTV DVB-T Lite
- DViCO FusionHDTV5 Lite
o Technotrend / Hauppauge DVB USB devices:
- Nova USB
@ -83,3 +93,30 @@ o DiBcom DVB-T USB based devices:
- DiBcom USB2.0 DVB-T reference device (non-public)
o Experimental support for the analog module of the Siemens DVB-C PCI card
o Cards based on the Conexant cx2388x PCI bridge:
- ADS Tech Instant TV DVB-T PCI
- ATI HDTV Wonder
- digitalnow DNTV Live! DVB-T
- DViCO FusionHDTV DVB-T1
- DViCO FusionHDTV DVB-T Plus
- DViCO FusionHDTV3 Gold-Q
- DViCO FusionHDTV3 Gold-T
- DViCO FusionHDTV5 Gold
- Hauppauge Nova-T DVB-T
- KWorld/VStream XPert DVB-T
- pcHDTV HD3000 HDTV
- TerraTec Cinergy 1400 DVB-T
- WinFast DTV1000-T
o Cards based on the Phillips saa7134 PCI bridge:
- Medion 7134
- Pinnacle PCTV 300i DVB-T + PAL
- LifeView FlyDVB-T DUO
- Typhoon DVB-T Duo Digital/Analog Cardbus
- Philips TOUGH DVB-T reference design
- Philips EUROPA V3 reference design
- Compro Videomate DVB-T300
- Compro Videomate DVB-T200
- AVerMedia AVerTVHD MCE A180

17
Documentation/dvb/contributors.txt
View file

@ -75,5 +75,22 @@ Ernst Peinlich <e.peinlich@inode.at>
Peter Beutner <p.beutner@gmx.net>
for the IR code for the ttusb-dec driver
Wilson Michaels <wilsonmichaels@earthlink.net>
for the lgdt330x frontend driver, and various bugfixes
Michael Krufky <mkrufky@m1k.net>
for maintaining v4l/dvb inter-tree dependencies
Taylor Jacob <rtjacob@earthlink.net>
for the nxt2002 frontend driver
Jean-Francois Thibert <jeanfrancois@sagetv.com>
for the nxt2004 frontend driver
Kirk Lapray <kirk.lapray@gmail.com>
for the or51211 and or51132 frontend drivers, and
for merging the nxt2002 and nxt2004 modules into a
single nxt200x frontend driver.
(If you think you should be in this list, but you are not, drop a
line to the DVB mailing list)

19
Documentation/dvb/get_dvb_firmware
View file

@ -22,7 +22,7 @@ use File::Temp qw/ tempdir /;
use IO::Handle;
@components = ( "sp8870", "sp887x", "tda10045", "tda10046", "av7110", "dec2000t",
"dec2540t", "dec3000s", "vp7041", "dibusb", "nxt2002",
"dec2540t", "dec3000s", "vp7041", "dibusb", "nxt2002", "nxt2004",
"or51211", "or51132_qam", "or51132_vsb");
# Check args
@ -252,6 +252,23 @@ sub nxt2002 {
$outfile;
}
sub nxt2004 {
my $sourcefile = "AVerTVHD_MCE_A180_Drv_v1.2.2.16.zip";
my $url = "http://www.aver.com/support/Drivers/$sourcefile";
my $hash = "111cb885b1e009188346d72acfed024c";
my $outfile = "dvb-fe-nxt2004.fw";
my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
checkstandard();
wgetfile($sourcefile, $url);
unzip($sourcefile, $tmpdir);
verify("$tmpdir/3xHybrid.sys", $hash);
extract("$tmpdir/3xHybrid.sys", 465304, 9584, $outfile);
$outfile;
}
sub or51211 {
my $fwfile = "dvb-fe-or51211.fw";
my $url = "http://linuxtv.org/downloads/firmware/$fwfile";

152
Documentation/fb/fbcon.txt Normal file
View file

@ -0,0 +1,152 @@
The Framebuffer Console
=======================
The framebuffer console (fbcon), as its name implies, is a text
console running on top of the framebuffer device. It has the functionality of
any standard text console driver, such as the VGA console, with the added
features that can be attributed to the graphical nature of the framebuffer.
In the x86 architecture, the framebuffer console is optional, and
some even treat it as a toy. For other architectures, it is the only available
display device, text or graphical.
What are the features of fbcon? The framebuffer console supports
high resolutions, varying font types, display rotation, primitive multihead,
etc. Theoretically, multi-colored fonts, blending, aliasing, and any feature
made available by the underlying graphics card are also possible.
A. Configuration
The framebuffer console can be enabled by using your favorite kernel
configuration tool. It is under Device Drivers->Graphics Support->Support for
framebuffer devices->Framebuffer Console Support. Select 'y' to compile
support statically, or 'm' for module support. The module will be fbcon.
In order for fbcon to activate, at least one framebuffer driver is
required, so choose from any of the numerous drivers available. For x86
systems, they almost universally have VGA cards, so vga16fb and vesafb will
always be available. However, using a chipset-specific driver will give you
more speed and features, such as the ability to change the video mode
dynamically.
To display the penguin logo, choose any logo available in Logo
Configuration->Boot up logo.
Also, you will need to select at least one compiled-in fonts, but if
you don't do anything, the kernel configuration tool will select one for you,
usually an 8x16 font.
GOTCHA: A common bug report is enabling the framebuffer without enabling the
framebuffer console. Depending on the driver, you may get a blanked or
garbled display, but the system still boots to completion. If you are
fortunate to have a driver that does not alter the graphics chip, then you
will still get a VGA console.
B. Loading
Possible scenarios:
1. Driver and fbcon are compiled statically
Usually, fbcon will automatically take over your console. The notable
exception is vesafb. It needs to be explicitly activated with the
vga= boot option parameter.
2. Driver is compiled statically, fbcon is compiled as a module
Depending on the driver, you either get a standard console, or a
garbled display, as mentioned above. To get a framebuffer console,
do a 'modprobe fbcon'.
3. Driver is compiled as a module, fbcon is compiled statically
You get your standard console. Once the driver is loaded with
'modprobe xxxfb', fbcon automatically takes over the console with
the possible exception of using the fbcon=map:n option. See below.
4. Driver and fbcon are compiled as a module.
You can load them in any order. Once both are loaded, fbcon will take
over the console.
C. Boot options
The framebuffer console has several, largely unknown, boot options
that can change its behavior.
1. fbcon=font:<name>
Select the initial font to use. The value 'name' can be any of the
compiled-in fonts: VGA8x16, 7x14, 10x18, VGA8x8, MINI4x6, RomanLarge,
SUN8x16, SUN12x22, ProFont6x11, Acorn8x8, PEARL8x8.
Note, not all drivers can handle font with widths not divisible by 8,
such as vga16fb.
2. fbcon=scrollback:<value>[k]
The scrollback buffer is memory that is used to preserve display
contents that has already scrolled past your view. This is accessed
by using the Shift-PageUp key combination. The value 'value' is any
integer. It defaults to 32KB. The 'k' suffix is optional, and will
multiply the 'value' by 1024.
3. fbcon=map:<0123>
This is an interesting option. It tells which driver gets mapped to
which console. The value '0123' is a sequence that gets repeated until
the total length is 64 which is the number of consoles available. In
the above example, it is expanded to 012301230123... and the mapping
will be:
tty | 1 2 3 4 5 6 7 8 9 ...
fb | 0 1 2 3 0 1 2 3 0 ...
('cat /proc/fb' should tell you what the fb numbers are)
One side effect that may be useful is using a map value that exceeds
the number of loaded fb drivers. For example, if only one driver is
available, fb0, adding fbcon=map:1 tells fbcon not to take over the
console.
Later on, when you want to map the console the to the framebuffer
device, you can use the con2fbmap utility.
4. fbcon=vc:<n1>-<n2>
This option tells fbcon to take over only a range of consoles as
specified by the values 'n1' and 'n2'. The rest of the consoles
outside the given range will still be controlled by the standard
console driver.
NOTE: For x86 machines, the standard console is the VGA console which
is typically located on the same video card. Thus, the consoles that
are controlled by the VGA console will be garbled.
4. fbcon=rotate:<n>
This option changes the orientation angle of the console display. The
value 'n' accepts the following:
0 - normal orientation (0 degree)
1 - clockwise orientation (90 degrees)
2 - upside down orientation (180 degrees)
3 - counterclockwise orientation (270 degrees)
The angle can be changed anytime afterwards by 'echoing' the same
numbers to any one of the 2 attributes found in
/sys/class/graphics/fb{x}
con_rotate - rotate the display of the active console
con_rotate_all - rotate the display of all consoles
Console rotation will only become available if Console Rotation
Support is compiled in your kernel.
NOTE: This is purely console rotation. Any other applications that
use the framebuffer will remain at their 'normal'orientation.
Actually, the underlying fb driver is totally ignorant of console
rotation.
---
Antonino Daplas <adaplas@pol.net>

4
Documentation/fb/vesafb.txt
View file

@ -146,10 +146,10 @@ pmipal Use the protected mode interface for palette changes.
mtrr:n setup memory type range registers for the vesafb framebuffer
where n:
0 - disabled (equivalent to nomtrr)
0 - disabled (equivalent to nomtrr) (default)
1 - uncachable
2 - write-back
3 - write-combining (default)
3 - write-combining
4 - write-through
If you see the following in dmesg, choose the type that matches the

45
Documentation/feature-removal-schedule.txt
View file

@ -25,6 +25,13 @@ Who: Adrian Bunk <bunk@stusta.de>
---------------------------
What: drivers depending on OBSOLETE_OSS_DRIVER
When: January 2006
Why: OSS drivers with ALSA replacements
Who: Adrian Bunk <bunk@stusta.de>
---------------------------
What: RCU API moves to EXPORT_SYMBOL_GPL
When: April 2006
Files: include/linux/rcupdate.h, kernel/rcupdate.c
@ -60,6 +67,21 @@ Who: Jody McIntyre <scjody@steamballoon.com>
---------------------------
What: Video4Linux API 1 ioctls and video_decoder.h from Video devices.
When: July 2006
Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6
series. The old API have lots of drawbacks and don't provide enough
means to work with all video and audio standards. The newer API is
already available on the main drivers and should be used instead.
Newer drivers should use v4l_compat_translate_ioctl function to handle
old calls, replacing to newer ones.
Decoder iocts are using internally to allow video drivers to
communicate with video decoders. This should also be improved to allow
V4L2 calls being translated into compatible internal ioctls.
Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
---------------------------
What: i2c sysfs name change: in1_ref, vid deprecated in favour of cpu0_vid
When: November 2005
Files: drivers/i2c/chips/adm1025.c, drivers/i2c/chips/adm1026.c
@ -69,6 +91,22 @@ Who: Grant Coady <gcoady@gmail.com>
---------------------------
What: remove EXPORT_SYMBOL(panic_timeout)
When: April 2006
Files: kernel/panic.c
Why: No modular usage in the kernel.
Who: Adrian Bunk <bunk@stusta.de>
---------------------------
What: remove EXPORT_SYMBOL(insert_resource)
When: April 2006
Files: kernel/resource.c
Why: No modular usage in the kernel.
Who: Adrian Bunk <bunk@stusta.de>
---------------------------
What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
When: November 2005
Files: drivers/pcmcia/: pcmcia_ioctl.c
@ -95,3 +133,10 @@ Why: This interface has been obsoleted by the new layer3-independent
to link against API-compatible library on top of libnfnetlink_queue
instead of the current 'libipq'.
Who: Harald Welte <laforge@netfilter.org>
---------------------------
What: EXPORT_SYMBOL(lookup_hash)
When: January 2006
Why: Too low-level interface. Use lookup_one_len or lookup_create instead.
Who: Christoph Hellwig <hch@lst.de>

173
Documentation/filesystems/dentry-locking.txt Normal file
View file

@ -0,0 +1,173 @@
RCU-based dcache locking model
==============================
On many workloads, the most common operation on dcache is to look up a
dentry, given a parent dentry and the name of the child. Typically,
for every open(), stat() etc., the dentry corresponding to the
pathname will be looked up by walking the tree starting with the first
component of the pathname and using that dentry along with the next
component to look up the next level and so on. Since it is a frequent
operation for workloads like multiuser environments and web servers,
it is important to optimize this path.
Prior to 2.5.10, dcache_lock was acquired in d_lookup and thus in
every component during path look-up. Since 2.5.10 onwards, fast-walk
algorithm changed this by holding the dcache_lock at the beginning and
walking as many cached path component dentries as possible. This
significantly decreases the number of acquisition of
dcache_lock. However it also increases the lock hold time
significantly and affects performance in large SMP machines. Since
2.5.62 kernel, dcache has been using a new locking model that uses RCU
to make dcache look-up lock-free.
The current dcache locking model is not very different from the
existing dcache locking model. Prior to 2.5.62 kernel, dcache_lock
protected the hash chain, d_child, d_alias, d_lru lists as well as
d_inode and several other things like mount look-up. RCU-based changes
affect only the way the hash chain is protected. For everything else
the dcache_lock must be taken for both traversing as well as
updating. The hash chain updates too take the dcache_lock. The
significant change is the way d_lookup traverses the hash chain, it
doesn't acquire the dcache_lock for this and rely on RCU to ensure
that the dentry has not been *freed*.
Dcache locking details
======================
For many multi-user workloads, open() and stat() on files are very
frequently occurring operations. Both involve walking of path names to
find the dentry corresponding to the concerned file. In 2.4 kernel,
dcache_lock was held during look-up of each path component. Contention
and cache-line bouncing of this global lock caused significant
scalability problems. With the introduction of RCU in Linux kernel,
this was worked around by making the look-up of path components during
path walking lock-free.
Safe lock-free look-up of dcache hash table
===========================================
Dcache is a complex data structure with the hash table entries also
linked together in other lists. In 2.4 kernel, dcache_lock protected
all the lists. We applied RCU only on hash chain walking. The rest of
the lists are still protected by dcache_lock. Some of the important
changes are :
1. The deletion from hash chain is done using hlist_del_rcu() macro
which doesn't initialize next pointer of the deleted dentry and
this allows us to walk safely lock-free while a deletion is
happening.
2. Insertion of a dentry into the hash table is done using
hlist_add_head_rcu() which take care of ordering the writes - the
writes to the dentry must be visible before the dentry is
inserted. This works in conjunction with hlist_for_each_rcu() while
walking the hash chain. The only requirement is that all
initialization to the dentry must be done before
hlist_add_head_rcu() since we don't have dcache_lock protection
while traversing the hash chain. This isn't different from the
existing code.
3. The dentry looked up without holding dcache_lock by cannot be
returned for walking if it is unhashed. It then may have a NULL
d_inode or other bogosity since RCU doesn't protect the other
fields in the dentry. We therefore use a flag DCACHE_UNHASHED to
indicate unhashed dentries and use this in conjunction with a
per-dentry lock (d_lock). Once looked up without the dcache_lock,
we acquire the per-dentry lock (d_lock) and check if the dentry is
unhashed. If so, the look-up is failed. If not, the reference count
of the dentry is increased and the dentry is returned.
4. Once a dentry is looked up, it must be ensured during the path walk
for that component it doesn't go away. In pre-2.5.10 code, this was
done holding a reference to the dentry. dcache_rcu does the same.
In some sense, dcache_rcu path walking looks like the pre-2.5.10
version.
5. All dentry hash chain updates must take the dcache_lock as well as
the per-dentry lock in that order. dput() does this to ensure that
a dentry that has just been looked up in another CPU doesn't get
deleted before dget() can be done on it.
6. There are several ways to do reference counting of RCU protected
objects. One such example is in ipv4 route cache where deferred
freeing (using call_rcu()) is done as soon as the reference count
goes to zero. This cannot be done in the case of dentries because
tearing down of dentries require blocking (dentry_iput()) which
isn't supported from RCU callbacks. Instead, tearing down of
dentries happen synchronously in dput(), but actual freeing happens
later when RCU grace period is over. This allows safe lock-free
walking of the hash chains, but a matched dentry may have been
partially torn down. The checking of DCACHE_UNHASHED flag with
d_lock held detects such dentries and prevents them from being
returned from look-up.
Maintaining POSIX rename semantics
==================================
Since look-up of dentries is lock-free, it can race against a
concurrent rename operation. For example, during rename of file A to
B, look-up of either A or B must succeed. So, if look-up of B happens
after A has been removed from the hash chain but not added to the new
hash chain, it may fail. Also, a comparison while the name is being
written concurrently by a rename may result in false positive matches
violating rename semantics. Issues related to race with rename are
handled as described below :
1. Look-up can be done in two ways - d_lookup() which is safe from
simultaneous renames and __d_lookup() which is not. If
__d_lookup() fails, it must be followed up by a d_lookup() to
correctly determine whether a dentry is in the hash table or
not. d_lookup() protects look-ups using a sequence lock
(rename_lock).
2. The name associated with a dentry (d_name) may be changed if a
rename is allowed to happen simultaneously. To avoid memcmp() in
__d_lookup() go out of bounds due to a rename and false positive
comparison, the name comparison is done while holding the
per-dentry lock. This prevents concurrent renames during this
operation.
3. Hash table walking during look-up may move to a different bucket as
the current dentry is moved to a different bucket due to rename.
But we use hlists in dcache hash table and they are
null-terminated. So, even if a dentry moves to a different bucket,
hash chain walk will terminate. [with a list_head list, it may not
since termination is when the list_head in the original bucket is
reached]. Since we redo the d_parent check and compare name while
holding d_lock, lock-free look-up will not race against d_move().
4. There can be a theoretical race when a dentry keeps coming back to
original bucket due to double moves. Due to this look-up may
consider that it has never moved and can end up in a infinite loop.
But this is not any worse that theoretical livelocks we already
have in the kernel.
Important guidelines for filesystem developers related to dcache_rcu
====================================================================
1. Existing dcache interfaces (pre-2.5.62) exported to filesystem
don't change. Only dcache internal implementation changes. However
filesystems *must not* delete from the dentry hash chains directly
using the list macros like allowed earlier. They must use dcache
APIs like d_drop() or __d_drop() depending on the situation.
2. d_flags is now protected by a per-dentry lock (d_lock). All access
to d_flags must be protected by it.
3. For a hashed dentry, checking of d_count needs to be protected by
d_lock.
Papers and other documentation on dcache locking
================================================
1. Scaling dcache with RCU (http://linuxjournal.com/article.php?sid=7124).
2. http://lse.sourceforge.net/locking/dcache/dcache.html

5
Documentation/filesystems/devfs/README
View file

@ -1812,11 +1812,6 @@ it may overflow the messages buffer, but try to get as much of it as
you can
if you get an Oops, run ksymoops to decode it so that the
names of the offending functions are provided. A non-decoded Oops is
pretty useless
send a copy of your devfsd configuration file(s)
send the bug report to me first.

2
Documentation/filesystems/ext2.txt
View file

@ -17,8 +17,6 @@ set using tune2fs(8). Kernel-determined defaults are indicated by (*).
bsddf (*) Makes `df' act like BSD.
minixdf Makes `df' act like Minix.
check Check block and inode bitmaps at mount time
(requires CONFIG_EXT2_CHECK).
check=none, nocheck (*) Don't do extra checking of bitmaps on mount
(check=normal and check=strict options removed)

195
Documentation/filesystems/ramfs-rootfs-initramfs.txt Normal file
View file

@ -0,0 +1,195 @@
ramfs, rootfs and initramfs
October 17, 2005
Rob Landley <rob@landley.net>
=============================
What is ramfs?
--------------
Ramfs is a very simple filesystem that exports Linux's disk caching
mechanisms (the page cache and dentry cache) as a dynamically resizable
ram-based filesystem.
Normally all files are cached in memory by Linux. Pages of data read from
backing store (usually the block device the filesystem is mounted on) are kept
around in case it's needed again, but marked as clean (freeable) in case the
Virtual Memory system needs the memory for something else. Similarly, data
written to files is marked clean as soon as it has been written to backing
store, but kept around for caching purposes until the VM reallocates the
memory. A similar mechanism (the dentry cache) greatly speeds up access to
directories.
With ramfs, there is no backing store. Files written into ramfs allocate
dentries and page cache as usual, but there's nowhere to write them to.
This means the pages are never marked clean, so they can't be freed by the
VM when it's looking to recycle memory.
The amount of code required to implement ramfs is tiny, because all the
work is done by the existing Linux caching infrastructure. Basically,
you're mounting the disk cache as a filesystem. Because of this, ramfs is not
an optional component removable via menuconfig, since there would be negligible
space savings.
ramfs and ramdisk:
------------------
The older "ram disk" mechanism created a synthetic block device out of
an area of ram and used it as backing store for a filesystem. This block
device was of fixed size, so the filesystem mounted on it was of fixed
size. Using a ram disk also required unnecessarily copying memory from the
fake block device into the page cache (and copying changes back out), as well
as creating and destroying dentries. Plus it needed a filesystem driver
(such as ext2) to format and interpret this data.
Compared to ramfs, this wastes memory (and memory bus bandwidth), creates
unnecessary work for the CPU, and pollutes the CPU caches. (There are tricks
to avoid this copying by playing with the page tables, but they're unpleasantly
complicated and turn out to be about as expensive as the copying anyway.)
More to the point, all the work ramfs is doing has to happen _anyway_,
since all file access goes through the page and dentry caches. The ram
disk is simply unnecessary, ramfs is internally much simpler.
Another reason ramdisks are semi-obsolete is that the introduction of
loopback devices offered a more flexible and convenient way to create
synthetic block devices, now from files instead of from chunks of memory.
See losetup (8) for details.
ramfs and tmpfs:
----------------
One downside of ramfs is you can keep writing data into it until you fill
up all memory, and the VM can't free it because the VM thinks that files
should get written to backing store (rather than swap space), but ramfs hasn't
got any backing store. Because of this, only root (or a trusted user) should
be allowed write access to a ramfs mount.
A ramfs derivative called tmpfs was created to add size limits, and the ability
to write the data to swap space. Normal users can be allowed write access to
tmpfs mounts. See Documentation/filesystems/tmpfs.txt for more information.
What is rootfs?
---------------
Rootfs is a special instance of ramfs, which is always present in 2.6 systems.
(It's used internally as the starting and stopping point for searches of the
kernel's doubly-linked list of mount points.)
Most systems just mount another filesystem over it and ignore it. The
amount of space an empty instance of ramfs takes up is tiny.
What is initramfs?
------------------
All 2.6 Linux kernels contain a gzipped "cpio" format archive, which is
extracted into rootfs when the kernel boots up. After extracting, the kernel
checks to see if rootfs contains a file "init", and if so it executes it as PID
1. If found, this init process is responsible for bringing the system the
rest of the way up, including locating and mounting the real root device (if
any). If rootfs does not contain an init program after the embedded cpio
archive is extracted into it, the kernel will fall through to the older code
to locate and mount a root partition, then exec some variant of /sbin/init
out of that.
All this differs from the old initrd in several ways:
- The old initrd was a separate file, while the initramfs archive is linked
into the linux kernel image. (The directory linux-*/usr is devoted to
generating this archive during the build.)
- The old initrd file was a gzipped filesystem image (in some file format,
such as ext2, that had to be built into the kernel), while the new
initramfs archive is a gzipped cpio archive (like tar only simpler,
see cpio(1) and Documentation/early-userspace/buffer-format.txt).
- The program run by the old initrd (which was called /initrd, not /init) did
some setup and then returned to the kernel, while the init program from
initramfs is not expected to return to the kernel. (If /init needs to hand
off control it can overmount / with a new root device and exec another init
program. See the switch_root utility, below.)
- When switching another root device, initrd would pivot_root and then
umount the ramdisk. But initramfs is rootfs: you can neither pivot_root
rootfs, nor unmount it. Instead delete everything out of rootfs to
free up the space (find -xdev / -exec rm '{}' ';'), overmount rootfs
with the new root (cd /newmount; mount --move . /; chroot .), attach
stdin/stdout/stderr to the new /dev/console, and exec the new init.
Since this is a remarkably persnickity process (and involves deleting
commands before you can run them), the klibc package introduced a helper
program (utils/run_init.c) to do all this for you. Most other packages
(such as busybox) have named this command "switch_root".
Populating initramfs:
---------------------
The 2.6 kernel build process always creates a gzipped cpio format initramfs
archive and links it into the resulting kernel binary. By default, this
archive is empty (consuming 134 bytes on x86). The config option
CONFIG_INITRAMFS_SOURCE (for some reason buried under devices->block devices
in menuconfig, and living in usr/Kconfig) can be used to specify a source for
the initramfs archive, which will automatically be incorporated into the
resulting binary. This option can point to an existing gzipped cpio archive, a
directory containing files to be archived, or a text file specification such
as the following example:
dir /dev 755 0 0
nod /dev/console 644 0 0 c 5 1
nod /dev/loop0 644 0 0 b 7 0
dir /bin 755 1000 1000
slink /bin/sh busybox 777 0 0
file /bin/busybox initramfs/busybox 755 0 0
dir /proc 755 0 0
dir /sys 755 0 0
dir /mnt 755 0 0
file /init initramfs/init.sh 755 0 0
One advantage of the text file is that root access is not required to
set permissions or create device nodes in the new archive. (Note that those
two example "file" entries expect to find files named "init.sh" and "busybox" in
a directory called "initramfs", under the linux-2.6.* directory. See
Documentation/early-userspace/README for more details.)
If you don't already understand what shared libraries, devices, and paths
you need to get a minimal root filesystem up and running, here are some
references:
http://www.tldp.org/HOWTO/Bootdisk-HOWTO/
http://www.tldp.org/HOWTO/From-PowerUp-To-Bash-Prompt-HOWTO.html
http://www.linuxfromscratch.org/lfs/view/stable/
The "klibc" package (http://www.kernel.org/pub/linux/libs/klibc) is
designed to be a tiny C library to statically link early userspace
code against, along with some related utilities. It is BSD licensed.
I use uClibc (http://www.uclibc.org) and busybox (http://www.busybox.net)
myself. These are LGPL and GPL, respectively.
In theory you could use glibc, but that's not well suited for small embedded
uses like this. (A "hello world" program statically linked against glibc is
over 400k. With uClibc it's 7k. Also note that glibc dlopens libnss to do
name lookups, even when otherwise statically linked.)
Future directions:
------------------
Today (2.6.14), initramfs is always compiled in, but not always used. The
kernel falls back to legacy boot code that is reached only if initramfs does
not contain an /init program. The fallback is legacy code, there to ensure a
smooth transition and allowing early boot functionality to gradually move to
"early userspace" (I.E. initramfs).
The move to early userspace is necessary because finding and mounting the real
root device is complex. Root partitions can span multiple devices (raid or
separate journal). They can be out on the network (requiring dhcp, setting a
specific mac address, logging into a server, etc). They can live on removable
media, with dynamically allocated major/minor numbers and persistent naming
issues requiring a full udev implementation to sort out. They can be
compressed, encrypted, copy-on-write, loopback mounted, strangely partitioned,
and so on.
This kind of complexity (which inevitably includes policy) is rightly handled
in userspace. Both klibc and busybox/uClibc are working on simple initramfs
packages to drop into a kernel build, and when standard solutions are ready
and widely deployed, the kernel's legacy early boot code will become obsolete
and a candidate for the feature removal schedule.
But that's a while off yet.

414
Documentation/filesystems/vfs.txt
View file

@ -3,7 +3,7 @@
Original author: Richard Gooch <rgooch@atnf.csiro.au>
Last updated on August 25, 2005
Last updated on October 28, 2005
Copyright (C) 1999 Richard Gooch
Copyright (C) 2005 Pekka Enberg
@ -11,62 +11,61 @@
This file is released under the GPLv2.
What is it?
===========
Introduction
============
The Virtual File System (otherwise known as the Virtual Filesystem
Switch) is the software layer in the kernel that provides the
filesystem interface to userspace programs. It also provides an
abstraction within the kernel which allows different filesystem
implementations to coexist.
The Virtual File System (also known as the Virtual Filesystem Switch)
is the software layer in the kernel that provides the filesystem
interface to userspace programs. It also provides an abstraction
within the kernel which allows different filesystem implementations to
coexist.
VFS system calls open(2), stat(2), read(2), write(2), chmod(2) and so
on are called from a process context. Filesystem locking is described
in the document Documentation/filesystems/Locking.
A Quick Look At How It Works
============================
Directory Entry Cache (dcache)
------------------------------
In this section I'll briefly describe how things work, before
launching into the details. I'll start with describing what happens
when user programs open and manipulate files, and then look from the
other view which is how a filesystem is supported and subsequently
mounted.
The VFS implements the open(2), stat(2), chmod(2), and similar system
calls. The pathname argument that is passed to them is used by the VFS
to search through the directory entry cache (also known as the dentry
cache or dcache). This provides a very fast look-up mechanism to
translate a pathname (filename) into a specific dentry. Dentries live
in RAM and are never saved to disc: they exist only for performance.
The dentry cache is meant to be a view into your entire filespace. As
most computers cannot fit all dentries in the RAM at the same time,
some bits of the cache are missing. In order to resolve your pathname
into a dentry, the VFS may have to resort to creating dentries along
the way, and then loading the inode. This is done by looking up the
inode.
Opening a File
--------------
The Inode Object
----------------
The VFS implements the open(2), stat(2), chmod(2) and similar system
calls. The pathname argument is used by the VFS to search through the
directory entry cache (dentry cache or "dcache"). This provides a very
fast look-up mechanism to translate a pathname (filename) into a
specific dentry.
An individual dentry usually has a pointer to an inode. Inodes are
filesystem objects such as regular files, directories, FIFOs and other
beasts. They live either on the disc (for block device filesystems)
or in the memory (for pseudo filesystems). Inodes that live on the
disc are copied into the memory when required and changes to the inode
are written back to disc. A single inode can be pointed to by multiple
dentries (hard links, for example, do this).
An individual dentry usually has a pointer to an inode. Inodes are the
things that live on disc drives, and can be regular files (you know:
those things that you write data into), directories, FIFOs and other
beasts. Dentries live in RAM and are never saved to disc: they exist
only for performance. Inodes live on disc and are copied into memory
when required. Later any changes are written back to disc. The inode
that lives in RAM is a VFS inode, and it is this which the dentry
points to. A single inode can be pointed to by multiple dentries
(think about hardlinks).
To look up an inode requires that the VFS calls the lookup() method of
the parent directory inode. This method is installed by the specific
filesystem implementation that the inode lives in. Once the VFS has
the required dentry (and hence the inode), we can do all those boring
things like open(2) the file, or stat(2) it to peek at the inode
data. The stat(2) operation is fairly simple: once the VFS has the
dentry, it peeks at the inode data and passes some of it back to
userspace.
The dcache is meant to be a view into your entire filespace. Unlike
Linus, most of us losers can't fit enough dentries into RAM to cover
all of our filespace, so the dcache has bits missing. In order to
resolve your pathname into a dentry, the VFS may have to resort to
creating dentries along the way, and then loading the inode. This is
done by looking up the inode.
To look up an inode (usually read from disc) requires that the VFS
calls the lookup() method of the parent directory inode. This method
is installed by the specific filesystem implementation that the inode
lives in. There will be more on this later.
Once the VFS has the required dentry (and hence the inode), we can do
all those boring things like open(2) the file, or stat(2) it to peek
at the inode data. The stat(2) operation is fairly simple: once the
VFS has the dentry, it peeks at the inode data and passes some of it
back to userspace.
The File Object
---------------
Opening a file requires another operation: allocation of a file
structure (this is the kernel-side implementation of file
@ -74,51 +73,39 @@ descriptors). The freshly allocated file structure is initialized with
a pointer to the dentry and a set of file operation member functions.
These are taken from the inode data. The open() file method is then
called so the specific filesystem implementation can do it's work. You
can see that this is another switch performed by the VFS.
The file structure is placed into the file descriptor table for the
process.
can see that this is another switch performed by the VFS. The file
structure is placed into the file descriptor table for the process.
Reading, writing and closing files (and other assorted VFS operations)
is done by using the userspace file descriptor to grab the appropriate
file structure, and then calling the required file structure method
function to do whatever is required.
For as long as the file is open, it keeps the dentry "open" (in use),
which in turn means that the VFS inode is still in use.
All VFS system calls (i.e. open(2), stat(2), read(2), write(2),
chmod(2) and so on) are called from a process context. You should
assume that these calls are made without any kernel locks being
held. This means that the processes may be executing the same piece of
filesystem or driver code at the same time, on different
processors. You should ensure that access to shared resources is
protected by appropriate locks.
file structure, and then calling the required file structure method to
do whatever is required. For as long as the file is open, it keeps the
dentry in use, which in turn means that the VFS inode is still in use.
Registering and Mounting a Filesystem
-------------------------------------
=====================================
If you want to support a new kind of filesystem in the kernel, all you
need to do is call register_filesystem(). You pass a structure
describing the filesystem implementation (struct file_system_type)
which is then added to an internal table of supported filesystems. You
can do:
To register and unregister a filesystem, use the following API
functions:
% cat /proc/filesystems
#include <linux/fs.h>
to see what filesystems are currently available on your system.
extern int register_filesystem(struct file_system_type *);
extern int unregister_filesystem(struct file_system_type *);
When a request is made to mount a block device onto a directory in
your filespace the VFS will call the appropriate method for the
specific filesystem. The dentry for the mount point will then be
updated to point to the root inode for the new filesystem.
The passed struct file_system_type describes your filesystem. When a
request is made to mount a device onto a directory in your filespace,
the VFS will call the appropriate get_sb() method for the specific
filesystem. The dentry for the mount point will then be updated to
point to the root inode for the new filesystem.
It's now time to look at things in more detail.
You can see all filesystems that are registered to the kernel in the
file /proc/filesystems.
struct file_system_type
=======================
-----------------------
This describes the filesystem. As of kernel 2.6.13, the following
members are defined:
@ -197,8 +184,14 @@ A fill_super() method implementation has the following arguments:
int silent: whether or not to be silent on error
The Superblock Object
=====================
A superblock object represents a mounted filesystem.
struct super_operations
=======================
-----------------------
This describes how the VFS can manipulate the superblock of your
filesystem. As of kernel 2.6.13, the following members are defined:
@ -286,9 +279,9 @@ or bottom half).
a superblock. The second parameter indicates whether the method
should wait until the write out has been completed. Optional.
write_super_lockfs: called when VFS is locking a filesystem and forcing
it into a consistent state. This function is currently used by the
Logical Volume Manager (LVM).
write_super_lockfs: called when VFS is locking a filesystem and
forcing it into a consistent state. This method is currently
used by the Logical Volume Manager (LVM).
unlockfs: called when VFS is unlocking a filesystem and making it writable
again.
@ -317,8 +310,14 @@ field. This is a pointer to a "struct inode_operations" which
describes the methods that can be performed on individual inodes.
The Inode Object
================
An inode object represents an object within the filesystem.
struct inode_operations
=======================
-----------------------
This describes how the VFS can manipulate an inode in your
filesystem. As of kernel 2.6.13, the following members are defined:
@ -394,51 +393,62 @@ otherwise noted.
will probably need to call d_instantiate() just as you would
in the create() method
rename: called by the rename(2) system call to rename the object to
have the parent and name given by the second inode and dentry.
readlink: called by the readlink(2) system call. Only required if
you want to support reading symbolic links
follow_link: called by the VFS to follow a symbolic link to the
inode it points to. Only required if you want to support
symbolic links. This function returns a void pointer cookie
symbolic links. This method returns a void pointer cookie
that is passed to put_link().
put_link: called by the VFS to release resources allocated by
follow_link(). The cookie returned by follow_link() is passed to
to this function as the last parameter. It is used by filesystems
such as NFS where page cache is not stable (i.e. page that was
installed when the symbolic link walk started might not be in the
page cache at the end of the walk).
follow_link(). The cookie returned by follow_link() is passed
to to this method as the last parameter. It is used by
filesystems such as NFS where page cache is not stable
(i.e. page that was installed when the symbolic link walk
started might not be in the page cache at the end of the
walk).
truncate: called by the VFS to change the size of a file. The i_size
field of the inode is set to the desired size by the VFS before
this function is called. This function is called by the truncate(2)
system call and related functionality.
truncate: called by the VFS to change the size of a file. The
i_size field of the inode is set to the desired size by the
VFS before this method is called. This method is called by
the truncate(2) system call and related functionality.
permission: called by the VFS to check for access rights on a POSIX-like
filesystem.
setattr: called by the VFS to set attributes for a file. This function is
called by chmod(2) and related system calls.
setattr: called by the VFS to set attributes for a file. This method
is called by chmod(2) and related system calls.
getattr: called by the VFS to get attributes of a file. This function is
called by stat(2) and related system calls.
getattr: called by the VFS to get attributes of a file. This method
is called by stat(2) and related system calls.
setxattr: called by the VFS to set an extended attribute for a file.
Extended attribute is a name:value pair associated with an inode. This
function is called by setxattr(2) system call.
Extended attribute is a name:value pair associated with an
inode. This method is called by setxattr(2) system call.
getxattr: called by the VFS to retrieve the value of an extended attribute
name. This function is called by getxattr(2) function call.
getxattr: called by the VFS to retrieve the value of an extended
attribute name. This method is called by getxattr(2) function
call.
listxattr: called by the VFS to list all extended attributes for a given
file. This function is called by listxattr(2) system call.
listxattr: called by the VFS to list all extended attributes for a
given file. This method is called by listxattr(2) system call.
removexattr: called by the VFS to remove an extended attribute from a file.
This function is called by removexattr(2) system call.
removexattr: called by the VFS to remove an extended attribute from
a file. This method is called by removexattr(2) system call.
The Address Space Object
========================
The address space object is used to identify pages in the page cache.
struct address_space_operations
===============================
-------------------------------
This describes how the VFS can manipulate mapping of a file to page cache in
your filesystem. As of kernel 2.6.13, the following members are defined:
@ -502,8 +512,14 @@ struct address_space_operations {
it. An example implementation can be found in fs/ext2/xip.c.
The File Object
===============
A file object represents a file opened by a process.
struct file_operations
======================
----------------------
This describes how the VFS can manipulate an open file. As of kernel
2.6.13, the following members are defined:
@ -661,7 +677,7 @@ of child dentries. Child dentries are basically like files in a
directory.
Directory Entry Cache APIs
Directory Entry Cache API
--------------------------
There are a number of functions defined which permit a filesystem to
@ -705,178 +721,24 @@ manipulate dentries:
and the dentry is returned. The caller must use d_put()
to free the dentry when it finishes using it.
RCU-based dcache locking model
------------------------------
On many workloads, the most common operation on dcache is
to look up a dentry, given a parent dentry and the name
of the child. Typically, for every open(), stat() etc.,
the dentry corresponding to the pathname will be looked
up by walking the tree starting with the first component
of the pathname and using that dentry along with the next
component to look up the next level and so on. Since it
is a frequent operation for workloads like multiuser
environments and web servers, it is important to optimize
this path.
Prior to 2.5.10, dcache_lock was acquired in d_lookup and thus
in every component during path look-up. Since 2.5.10 onwards,
fast-walk algorithm changed this by holding the dcache_lock
at the beginning and walking as many cached path component
dentries as possible. This significantly decreases the number
of acquisition of dcache_lock. However it also increases the
lock hold time significantly and affects performance in large
SMP machines. Since 2.5.62 kernel, dcache has been using
a new locking model that uses RCU to make dcache look-up
lock-free.
The current dcache locking model is not very different from the existing
dcache locking model. Prior to 2.5.62 kernel, dcache_lock
protected the hash chain, d_child, d_alias, d_lru lists as well
as d_inode and several other things like mount look-up. RCU-based
changes affect only the way the hash chain is protected. For everything
else the dcache_lock must be taken for both traversing as well as
updating. The hash chain updates too take the dcache_lock.
The significant change is the way d_lookup traverses the hash chain,
it doesn't acquire the dcache_lock for this and rely on RCU to
ensure that the dentry has not been *freed*.
For further information on dentry locking, please refer to the document
Documentation/filesystems/dentry-locking.txt.
Dcache locking details
----------------------
Resources
=========
For many multi-user workloads, open() and stat() on files are
very frequently occurring operations. Both involve walking
of path names to find the dentry corresponding to the
concerned file. In 2.4 kernel, dcache_lock was held
during look-up of each path component. Contention and
cache-line bouncing of this global lock caused significant
scalability problems. With the introduction of RCU
in Linux kernel, this was worked around by making
the look-up of path components during path walking lock-free.
(Note some of these resources are not up-to-date with the latest kernel
version.)
Creating Linux virtual filesystems. 2002
<http://lwn.net/Articles/13325/>
Safe lock-free look-up of dcache hash table
===========================================
The Linux Virtual File-system Layer by Neil Brown. 1999
<http://www.cse.unsw.edu.au/~neilb/oss/linux-commentary/vfs.html>
Dcache is a complex data structure with the hash table entries
also linked together in other lists. In 2.4 kernel, dcache_lock
protected all the lists. We applied RCU only on hash chain
walking. The rest of the lists are still protected by dcache_lock.
Some of the important changes are :
A tour of the Linux VFS by Michael K. Johnson. 1996
<http://www.tldp.org/LDP/khg/HyperNews/get/fs/vfstour.html>
1. The deletion from hash chain is done using hlist_del_rcu() macro which
doesn't initialize next pointer of the deleted dentry and this
allows us to walk safely lock-free while a deletion is happening.
2. Insertion of a dentry into the hash table is done using
hlist_add_head_rcu() which take care of ordering the writes -
the writes to the dentry must be visible before the dentry
is inserted. This works in conjunction with hlist_for_each_rcu()
while walking the hash chain. The only requirement is that
all initialization to the dentry must be done before hlist_add_head_rcu()
since we don't have dcache_lock protection while traversing
the hash chain. This isn't different from the existing code.
3. The dentry looked up without holding dcache_lock by cannot be
returned for walking if it is unhashed. It then may have a NULL
d_inode or other bogosity since RCU doesn't protect the other
fields in the dentry. We therefore use a flag DCACHE_UNHASHED to
indicate unhashed dentries and use this in conjunction with a
per-dentry lock (d_lock). Once looked up without the dcache_lock,
we acquire the per-dentry lock (d_lock) and check if the
dentry is unhashed. If so, the look-up is failed. If not, the
reference count of the dentry is increased and the dentry is returned.
4. Once a dentry is looked up, it must be ensured during the path
walk for that component it doesn't go away. In pre-2.5.10 code,
this was done holding a reference to the dentry. dcache_rcu does
the same. In some sense, dcache_rcu path walking looks like
the pre-2.5.10 version.
5. All dentry hash chain updates must take the dcache_lock as well as
the per-dentry lock in that order. dput() does this to ensure
that a dentry that has just been looked up in another CPU
doesn't get deleted before dget() can be done on it.
6. There are several ways to do reference counting of RCU protected
objects. One such example is in ipv4 route cache where
deferred freeing (using call_rcu()) is done as soon as
the reference count goes to zero. This cannot be done in
the case of dentries because tearing down of dentries
require blocking (dentry_iput()) which isn't supported from
RCU callbacks. Instead, tearing down of dentries happen
synchronously in dput(), but actual freeing happens later
when RCU grace period is over. This allows safe lock-free
walking of the hash chains, but a matched dentry may have
been partially torn down. The checking of DCACHE_UNHASHED
flag with d_lock held detects such dentries and prevents
them from being returned from look-up.
Maintaining POSIX rename semantics
==================================
Since look-up of dentries is lock-free, it can race against
a concurrent rename operation. For example, during rename
of file A to B, look-up of either A or B must succeed.
So, if look-up of B happens after A has been removed from the
hash chain but not added to the new hash chain, it may fail.
Also, a comparison while the name is being written concurrently
by a rename may result in false positive matches violating
rename semantics. Issues related to race with rename are
handled as described below :
1. Look-up can be done in two ways - d_lookup() which is safe
from simultaneous renames and __d_lookup() which is not.
If __d_lookup() fails, it must be followed up by a d_lookup()
to correctly determine whether a dentry is in the hash table
or not. d_lookup() protects look-ups using a sequence
lock (rename_lock).
2. The name associated with a dentry (d_name) may be changed if
a rename is allowed to happen simultaneously. To avoid memcmp()
in __d_lookup() go out of bounds due to a rename and false
positive comparison, the name comparison is done while holding the
per-dentry lock. This prevents concurrent renames during this
operation.
3. Hash table walking during look-up may move to a different bucket as
the current dentry is moved to a different bucket due to rename.
But we use hlists in dcache hash table and they are null-terminated.
So, even if a dentry moves to a different bucket, hash chain
walk will terminate. [with a list_head list, it may not since
termination is when the list_head in the original bucket is reached].
Since we redo the d_parent check and compare name while holding
d_lock, lock-free look-up will not race against d_move().
4. There can be a theoretical race when a dentry keeps coming back
to original bucket due to double moves. Due to this look-up may
consider that it has never moved and can end up in a infinite loop.
But this is not any worse that theoretical livelocks we already
have in the kernel.
Important guidelines for filesystem developers related to dcache_rcu
====================================================================
1. Existing dcache interfaces (pre-2.5.62) exported to filesystem
don't change. Only dcache internal implementation changes. However
filesystems *must not* delete from the dentry hash chains directly
using the list macros like allowed earlier. They must use dcache
APIs like d_drop() or __d_drop() depending on the situation.
2. d_flags is now protected by a per-dentry lock (d_lock). All
access to d_flags must be protected by it.
3. For a hashed dentry, checking of d_count needs to be protected
by d_lock.
Papers and other documentation on dcache locking
================================================
1. Scaling dcache with RCU (http://linuxjournal.com/article.php?sid=7124).
2. http://lse.sourceforge.net/locking/dcache/dcache.html
A small trail through the Linux kernel by Andries Brouwer. 2001
<http://www.win.tue.nl/~aeb/linux/vfs/trail.html>

32
Documentation/hpet.txt
View file

@ -1,18 +1,21 @@
High Precision Event Timer Driver for Linux
The High Precision Event Timer (HPET) hardware is the future replacement for the 8254 and Real
Time Clock (RTC) periodic timer functionality. Each HPET can have up two 32 timers. It is possible
to configure the first two timers as legacy replacements for 8254 and RTC periodic. A specification
done by INTEL and Microsoft can be found at http://www.intel.com/labs/platcomp/hpet/hpetspec.htm.
The High Precision Event Timer (HPET) hardware is the future replacement
for the 8254 and Real Time Clock (RTC) periodic timer functionality.
Each HPET can have up two 32 timers. It is possible to configure the
first two timers as legacy replacements for 8254 and RTC periodic timers.
A specification done by Intel and Microsoft can be found at
<http://www.intel.com/hardwaredesign/hpetspec.htm>.
The driver supports detection of HPET driver allocation and initialization of the HPET before the
driver module_init routine is called. This enables platform code which uses timer 0 or 1 as the
main timer to intercept HPET initialization. An example of this initialization can be found in
The driver supports detection of HPET driver allocation and initialization
of the HPET before the driver module_init routine is called. This enables
platform code which uses timer 0 or 1 as the main timer to intercept HPET
initialization. An example of this initialization can be found in
arch/i386/kernel/time_hpet.c.
The driver provides two APIs which are very similar to the API found in the rtc.c driver.
There is a user space API and a kernel space API. An example user space program is provided
below.
The driver provides two APIs which are very similar to the API found in
the rtc.c driver. There is a user space API and a kernel space API.
An example user space program is provided below.
#include <stdio.h>
#include <stdlib.h>
@ -290,9 +293,8 @@ The kernel API has three interfaces exported from the driver:
hpet_unregister(struct hpet_task *tp)
hpet_control(struct hpet_task *tp, unsigned int cmd, unsigned long arg)
The kernel module using this interface fills in the ht_func and ht_data members of the
hpet_task structure before calling hpet_register. hpet_control simply vectors to the hpet_ioctl
routine and has the same commands and respective arguments as the user API. hpet_unregister
The kernel module using this interface fills in the ht_func and ht_data
members of the hpet_task structure before calling hpet_register.
hpet_control simply vectors to the hpet_ioctl routine and has the same
commands and respective arguments as the user API. hpet_unregister
is used to terminate usage of the HPET timer reserved by hpet_register.

6
Documentation/i2c/busses/i2c-viapro
View file

@ -7,12 +7,10 @@ Supported adapters:
* VIA Technologies, Inc. VT82C686A/B
Datasheet: Sometimes available at the VIA website
* VIA Technologies, Inc. VT8231, VT8233, VT8233A, VT8235, VT8237
Datasheet: available on request from Via
* VIA Technologies, Inc. VT8231, VT8233, VT8233A, VT8235, VT8237R
Datasheet: available on request from VIA
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Kyösti Mälkki <kmalkki@cc.hut.fi>,
Mark D. Studebaker <mdsxyz123@yahoo.com>,
Jean Delvare <khali@linux-fr.org>

4
Documentation/i2c/writing-clients
View file

@ -412,7 +412,7 @@ For now, you can ignore the `flags' parameter. It is there for future use.
release_region(address,FOO_EXTENT);
/* SENSORS ONLY END */
ERROR1:
kfree(new_client);
kfree(data);
ERROR0:
return err;
}
@ -443,7 +443,7 @@ much simpler than the attachment code, fortunately!
release_region(client->addr,LM78_EXTENT);
/* HYBRID SENSORS CHIP ONLY END */
kfree(data);
kfree(i2c_get_clientdata(client));
return 0;
}

2
Documentation/ioctl-number.txt
View file

@ -130,8 +130,6 @@ Code Seq# Include File Comments
<mailto:zapman@interlan.net>
'i' 00-3F linux/i2o.h
'j' 00-3F linux/joystick.h
'k' all asm-sparc/kbio.h
asm-sparc64/kbio.h
'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system
<http://mikonos.dia.unisa.it/tcfs>
'l' 40-7F linux/udf_fs_i.h in development:

2
Documentation/magic-number.txt
View file

@ -120,7 +120,7 @@ ISDN_NET_MAGIC 0x49344C02 isdn_net_local_s drivers/isdn/i4l/isdn_net_li
SAVEKMSG_MAGIC2 0x4B4D5347 savekmsg arch/*/amiga/config.c
STLI_BOARDMAGIC 0x4bc6c825 stlibrd include/linux/istallion.h
CS_STATE_MAGIC 0x4c4f4749 cs_state sound/oss/cs46xx.c
SLAB_C_MAGIC 0x4f17a36d kmem_cache_s mm/slab.c
SLAB_C_MAGIC 0x4f17a36d kmem_cache mm/slab.c
COW_MAGIC 0x4f4f4f4d cow_header_v1 arch/um/drivers/ubd_user.c
I810_CARD_MAGIC 0x5072696E i810_card sound/oss/i810_audio.c
TRIDENT_CARD_MAGIC 0x5072696E trident_card sound/oss/trident.c

119
Documentation/md.txt
View file

@ -116,3 +116,122 @@ and it's role in the array.
Once started with RUN_ARRAY, uninitialized spares can be added with
HOT_ADD_DISK.
MD devices in sysfs
-------------------
md devices appear in sysfs (/sys) as regular block devices,
e.g.
/sys/block/md0
Each 'md' device will contain a subdirectory called 'md' which
contains further md-specific information about the device.
All md devices contain:
level
a text file indicating the 'raid level'. This may be a standard
numerical level prefixed by "RAID-" - e.g. "RAID-5", or some
other name such as "linear" or "multipath".
If no raid level has been set yet (array is still being
assembled), this file will be empty.
raid_disks
a text file with a simple number indicating the number of devices
in a fully functional array. If this is not yet known, the file
will be empty. If an array is being resized (not currently
possible) this will contain the larger of the old and new sizes.
As component devices are added to an md array, they appear in the 'md'
directory as new directories named
dev-XXX
where XXX is a name that the kernel knows for the device, e.g. hdb1.
Each directory contains:
block
a symlink to the block device in /sys/block, e.g.
/sys/block/md0/md/dev-hdb1/block -> ../../../../block/hdb/hdb1
super
A file containing an image of the superblock read from, or
written to, that device.
state
A file recording the current state of the device in the array
which can be a comma separated list of
faulty - device has been kicked from active use due to
a detected fault
in_sync - device is a fully in-sync member of the array
spare - device is working, but not a full member.
This includes spares that are in the process
of being recoverred to
This list make grow in future.
An active md device will also contain and entry for each active device
in the array. These are named
rdNN
where 'NN' is the possition in the array, starting from 0.
So for a 3 drive array there will be rd0, rd1, rd2.
These are symbolic links to the appropriate 'dev-XXX' entry.
Thus, for example,
cat /sys/block/md*/md/rd*/state
will show 'in_sync' on every line.
Active md devices for levels that support data redundancy (1,4,5,6)
also have
sync_action
a text file that can be used to monitor and control the rebuild
process. It contains one word which can be one of:
resync - redundancy is being recalculated after unclean
shutdown or creation
recover - a hot spare is being built to replace a
failed/missing device
idle - nothing is happening
check - A full check of redundancy was requested and is
happening. This reads all block and checks
them. A repair may also happen for some raid
levels.
repair - A full check and repair is happening. This is
similar to 'resync', but was requested by the
user, and the write-intent bitmap is NOT used to
optimise the process.
This file is writable, and each of the strings that could be
read are meaningful for writing.
'idle' will stop an active resync/recovery etc. There is no
guarantee that another resync/recovery may not be automatically
started again, though some event will be needed to trigger
this.
'resync' or 'recovery' can be used to restart the
corresponding operation if it was stopped with 'idle'.
'check' and 'repair' will start the appropriate process
providing the current state is 'idle'.
mismatch_count
When performing 'check' and 'repair', and possibly when
performing 'resync', md will count the number of errors that are
found. The count in 'mismatch_cnt' is the number of sectors
that were re-written, or (for 'check') would have been
re-written. As most raid levels work in units of pages rather
than sectors, this my be larger than the number of actual errors
by a factor of the number of sectors in a page.
Each active md device may also have attributes specific to the
personality module that manages it.
These are specific to the implementation of the module and could
change substantially if the implementation changes.
These currently include
stripe_cache_size (currently raid5 only)
number of entries in the stripe cache. This is writable, but
there are upper and lower limits (32768, 16). Default is 128.
strip_cache_active (currently raid5 only)
number of active entries in the stripe cache

128
Documentation/networking/README.ipw2100
View file

@ -1,27 +1,82 @@
===========================
Intel(R) PRO/Wireless 2100 Network Connection Driver for Linux
Intel(R) PRO/Wireless 2100 Driver for Linux in support of:
Intel(R) PRO/Wireless 2100 Network Connection
Copyright (C) 2003-2005, Intel Corporation
README.ipw2100
March 14, 2005
Version: 1.1.3
Date : October 17, 2005
===========================
Index
---------------------------
0. Introduction
1. Release 1.1.0 Current Features
2. Command Line Parameters
3. Sysfs Helper Files
4. Radio Kill Switch
5. Dynamic Firmware
6. Power Management
7. Support
8. License
-----------------------------------------------
0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
1. Introduction
2. Release 1.1.3 Current Features
3. Command Line Parameters
4. Sysfs Helper Files
5. Radio Kill Switch
6. Dynamic Firmware
7. Power Management
8. Support
9. License
===========================
0. Introduction
------------ ----- ----- ---- --- -- -
0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
-----------------------------------------------
Important Notice FOR ALL USERS OR DISTRIBUTORS!!!!
Intel wireless LAN adapters are engineered, manufactured, tested, and
quality checked to ensure that they meet all necessary local and
governmental regulatory agency requirements for the regions that they
are designated and/or marked to ship into. Since wireless LANs are
generally unlicensed devices that share spectrum with radars,
satellites, and other licensed and unlicensed devices, it is sometimes
necessary to dynamically detect, avoid, and limit usage to avoid
interference with these devices. In many instances Intel is required to
provide test data to prove regional and local compliance to regional and
governmental regulations before certification or approval to use the
product is granted. Intel's wireless LAN's EEPROM, firmware, and
software driver are designed to carefully control parameters that affect
radio operation and to ensure electromagnetic compliance (EMC). These
parameters include, without limitation, RF power, spectrum usage,
channel scanning, and human exposure.
For these reasons Intel cannot permit any manipulation by third parties
of the software provided in binary format with the wireless WLAN
adapters (e.g., the EEPROM and firmware). Furthermore, if you use any
patches, utilities, or code with the Intel wireless LAN adapters that
have been manipulated by an unauthorized party (i.e., patches,
utilities, or code (including open source code modifications) which have
not been validated by Intel), (i) you will be solely responsible for
ensuring the regulatory compliance of the products, (ii) Intel will bear
no liability, under any theory of liability for any issues associated
with the modified products, including without limitation, claims under
the warranty and/or issues arising from regulatory non-compliance, and
(iii) Intel will not provide or be required to assist in providing
support to any third parties for such modified products.
Note: Many regulatory agencies consider Wireless LAN adapters to be
modules, and accordingly, condition system-level regulatory approval
upon receipt and review of test data documenting that the antennas and
system configuration do not cause the EMC and radio operation to be
non-compliant.
The drivers available for download from SourceForge are provided as a
part of a development project. Conformance to local regulatory
requirements is the responsibility of the individual developer. As
such, if you are interested in deploying or shipping a driver as part of
solution intended to be used for purposes other than development, please
obtain a tested driver from Intel Customer Support at:
http://support.intel.com/support/notebook/sb/CS-006408.htm
1. Introduction
-----------------------------------------------
This document provides a brief overview of the features supported by the
IPW2100 driver project. The main project website, where the latest
@ -34,9 +89,8 @@ potential fixes and patches, as well as links to the development mailing list
for the driver project.
===========================
1. Release 1.1.0 Current Supported Features
---------------------------
2. Release 1.1.3 Current Supported Features
-----------------------------------------------
- Managed (BSS) and Ad-Hoc (IBSS)
- WEP (shared key and open)
- Wireless Tools support
@ -51,9 +105,8 @@ on the amount of validation and interoperability testing that has been
performed on a given feature.
===========================
2. Command Line Parameters
---------------------------
3. Command Line Parameters
-----------------------------------------------
If the driver is built as a module, the following optional parameters are used
by entering them on the command line with the modprobe command using this
@ -75,9 +128,9 @@ associate boolean associate=0 /* Do NOT auto associate */
disable boolean disable=1 /* Do not power the HW */
===========================
3. Sysfs Helper Files
4. Sysfs Helper Files
---------------------------
-----------------------------------------------
There are several ways to control the behavior of the driver. Many of the
general capabilities are exposed through the Wireless Tools (iwconfig). There
@ -120,9 +173,8 @@ For the device level files, see /sys/bus/pci/drivers/ipw2100:
based RF kill from ON -> OFF -> ON, the radio will NOT come back on
===========================
4. Radio Kill Switch
---------------------------
5. Radio Kill Switch
-----------------------------------------------
Most laptops provide the ability for the user to physically disable the radio.
Some vendors have implemented this as a physical switch that requires no
software to turn the radio off and on. On other laptops, however, the switch
@ -134,9 +186,8 @@ See the Sysfs helper file 'rf_kill' for determining the state of the RF switch
on your system.
===========================
5. Dynamic Firmware
---------------------------
6. Dynamic Firmware
-----------------------------------------------
As the firmware is licensed under a restricted use license, it can not be
included within the kernel sources. To enable the IPW2100 you will need a
firmware image to load into the wireless NIC's processors.
@ -146,9 +197,8 @@ You can obtain these images from <http://ipw2100.sf.net/firmware.php>.
See INSTALL for instructions on installing the firmware.
===========================
6. Power Management
---------------------------
7. Power Management
-----------------------------------------------
The IPW2100 supports the configuration of the Power Save Protocol
through a private wireless extension interface. The IPW2100 supports
the following different modes:
@ -200,9 +250,8 @@ xxxx/yyyy will be replaced with 'off' -- the level reported will be the active
level if `iwconfig eth1 power on` is invoked.
===========================
7. Support
---------------------------
8. Support
-----------------------------------------------
For general development information and support,
go to:
@ -218,9 +267,8 @@ For installation support on the ipw2100 1.1.0 driver on Linux kernels
http://supportmail.intel.com
===========================
8. License
---------------------------
9. License
-----------------------------------------------
Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.

196
Documentation/networking/README.ipw2200
View file

@ -1,33 +1,89 @@
Intel(R) PRO/Wireless 2915ABG Driver for Linux in support of:
Intel(R) PRO/Wireless 2200BG Network Connection
Intel(R) PRO/Wireless 2915ABG Network Connection
Intel(R) PRO/Wireless 2200BG Network Connection
Intel(R) PRO/Wireless 2915ABG Network Connection
Note: The Intel(R) PRO/Wireless 2915ABG Driver for Linux and Intel(R)
PRO/Wireless 2200BG Driver for Linux is a unified driver that works on
both hardware adapters listed above. In this document the Intel(R)
PRO/Wireless 2915ABG Driver for Linux will be used to reference the
Note: The Intel(R) PRO/Wireless 2915ABG Driver for Linux and Intel(R)
PRO/Wireless 2200BG Driver for Linux is a unified driver that works on
both hardware adapters listed above. In this document the Intel(R)
PRO/Wireless 2915ABG Driver for Linux will be used to reference the
unified driver.
Copyright (C) 2004-2005, Intel Corporation
README.ipw2200
Version: 1.0.0
Date : January 31, 2005
Version: 1.0.8
Date : October 20, 2005
Index
-----------------------------------------------
0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
1. Introduction
1.1. Overview of features
1.2. Module parameters
1.3. Wireless Extension Private Methods
1.4. Sysfs Helper Files
2. About the Version Numbers
3. Support
4. License
2. Ad-Hoc Networking
3. Interacting with Wireless Tools
3.1. iwconfig mode
4. About the Version Numbers
5. Firmware installation
6. Support
7. License
0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
-----------------------------------------------
Important Notice FOR ALL USERS OR DISTRIBUTORS!!!!
Intel wireless LAN adapters are engineered, manufactured, tested, and
quality checked to ensure that they meet all necessary local and
governmental regulatory agency requirements for the regions that they
are designated and/or marked to ship into. Since wireless LANs are
generally unlicensed devices that share spectrum with radars,
satellites, and other licensed and unlicensed devices, it is sometimes
necessary to dynamically detect, avoid, and limit usage to avoid
interference with these devices. In many instances Intel is required to
provide test data to prove regional and local compliance to regional and
governmental regulations before certification or approval to use the
product is granted. Intel's wireless LAN's EEPROM, firmware, and
software driver are designed to carefully control parameters that affect
radio operation and to ensure electromagnetic compliance (EMC). These
parameters include, without limitation, RF power, spectrum usage,
channel scanning, and human exposure.
For these reasons Intel cannot permit any manipulation by third parties
of the software provided in binary format with the wireless WLAN
adapters (e.g., the EEPROM and firmware). Furthermore, if you use any
patches, utilities, or code with the Intel wireless LAN adapters that
have been manipulated by an unauthorized party (i.e., patches,
utilities, or code (including open source code modifications) which have
not been validated by Intel), (i) you will be solely responsible for
ensuring the regulatory compliance of the products, (ii) Intel will bear
no liability, under any theory of liability for any issues associated
with the modified products, including without limitation, claims under
the warranty and/or issues arising from regulatory non-compliance, and
(iii) Intel will not provide or be required to assist in providing
support to any third parties for such modified products.
Note: Many regulatory agencies consider Wireless LAN adapters to be
modules, and accordingly, condition system-level regulatory approval
upon receipt and review of test data documenting that the antennas and
system configuration do not cause the EMC and radio operation to be
non-compliant.
The drivers available for download from SourceForge are provided as a
part of a development project. Conformance to local regulatory
requirements is the responsibility of the individual developer. As
such, if you are interested in deploying or shipping a driver as part of
solution intended to be used for purposes other than development, please
obtain a tested driver from Intel Customer Support at:
http://support.intel.com/support/notebook/sb/CS-006408.htm
1. Introduction
@ -45,7 +101,7 @@ file.
1.1. Overview of Features
-----------------------------------------------
The current release (1.0.0) supports the following features:
The current release (1.0.8) supports the following features:
+ BSS mode (Infrastructure, Managed)
+ IBSS mode (Ad-Hoc)
@ -56,17 +112,27 @@ The current release (1.0.0) supports the following features:
+ Full A rate support (2915 only)
+ Transmit power control
+ S state support (ACPI suspend/resume)
The following features are currently enabled, but not officially
supported:
+ WPA
+ long/short preamble support
+ Monitor mode (aka RFMon)
The distinction between officially supported and enabled is a reflection
on the amount of validation and interoperability testing that has been
performed on a given feature.
1.2. Command Line Parameters
-----------------------------------------------
Like many modules used in the Linux kernel, the Intel(R) PRO/Wireless
2915ABG Driver for Linux allows certain configuration options to be
provided as module parameters. The most common way to specify a module
parameter is via the command line.
Like many modules used in the Linux kernel, the Intel(R) PRO/Wireless
2915ABG Driver for Linux allows configuration options to be provided
as module parameters. The most common way to specify a module parameter
is via the command line.
The general form is:
@ -96,14 +162,18 @@ Where the supported parameter are:
debug
If using a debug build, this is used to control the amount of debug
info is logged. See the 'dval' and 'load' script for more info on
how to use this (the dval and load scripts are provided as part
info is logged. See the 'dvals' and 'load' script for more info on
how to use this (the dvals and load scripts are provided as part
of the ipw2200 development snapshot releases available from the
SourceForge project at http://ipw2200.sf.net)
led
Can be used to turn on experimental LED code.
0 = Off, 1 = On. Default is 0.
mode
Can be used to set the default mode of the adapter.
0 = Managed, 1 = Ad-Hoc
0 = Managed, 1 = Ad-Hoc, 2 = Monitor
1.3. Wireless Extension Private Methods
@ -164,8 +234,8 @@ The supported private methods are:
-----------------------------------------------
The Linux kernel provides a pseudo file system that can be used to
access various components of the operating system. The Intel(R)
PRO/Wireless 2915ABG Driver for Linux exposes several configuration
access various components of the operating system. The Intel(R)
PRO/Wireless 2915ABG Driver for Linux exposes several configuration
parameters through this mechanism.
An entry in the sysfs can support reading and/or writing. You can
@ -184,13 +254,13 @@ You can set the debug level via:
Where $VALUE would be a number in the case of this sysfs entry. The
input to sysfs files does not have to be a number. For example, the
firmware loader used by hotplug utilizes sysfs entries for transferring
firmware loader used by hotplug utilizes sysfs entries for transfering
the firmware image from user space into the driver.
The Intel(R) PRO/Wireless 2915ABG Driver for Linux exposes sysfs entries
at two levels -- driver level, which apply to all instances of the
driver (in the event that there are more than one device installed) and
device level, which applies only to the single specific instance.
at two levels -- driver level, which apply to all instances of the driver
(in the event that there are more than one device installed) and device
level, which applies only to the single specific instance.
1.4.1 Driver Level Sysfs Helper Files
@ -203,6 +273,7 @@ For the driver level files, look in /sys/bus/pci/drivers/ipw2200/
This controls the same global as the 'debug' module parameter
1.4.2 Device Level Sysfs Helper Files
-----------------------------------------------
@ -213,7 +284,7 @@ For the device level files, look in
For example:
/sys/bus/pci/drivers/ipw2200/0000:02:01.0
For the device level files, see /sys/bus/pci/[drivers/ipw2200:
For the device level files, see /sys/bus/pci/drivers/ipw2200:
rf_kill
read -
@ -231,8 +302,59 @@ For the device level files, see /sys/bus/pci/[drivers/ipw2200:
ucode
read-only access to the ucode version number
led
read -
0 = LED code disabled
1 = LED code enabled
write -
0 = Disable LED code
1 = Enable LED code
2. About the Version Numbers
NOTE: The LED code has been reported to hang some systems when
running ifconfig and is therefore disabled by default.
2. Ad-Hoc Networking
-----------------------------------------------
When using a device in an Ad-Hoc network, it is useful to understand the
sequence and requirements for the driver to be able to create, join, or
merge networks.
The following attempts to provide enough information so that you can
have a consistent experience while using the driver as a member of an
Ad-Hoc network.
2.1. Joining an Ad-Hoc Network
-----------------------------------------------
The easiest way to get onto an Ad-Hoc network is to join one that
already exists.
2.2. Creating an Ad-Hoc Network
-----------------------------------------------
An Ad-Hoc networks is created using the syntax of the Wireless tool.
For Example:
iwconfig eth1 mode ad-hoc essid testing channel 2
2.3. Merging Ad-Hoc Networks
-----------------------------------------------
3. Interaction with Wireless Tools
-----------------------------------------------
3.1 iwconfig mode
-----------------------------------------------
When configuring the mode of the adapter, all run-time configured parameters
are reset to the value used when the module was loaded. This includes
channels, rates, ESSID, etc.
4. About the Version Numbers
-----------------------------------------------
Due to the nature of open source development projects, there are
@ -259,12 +381,23 @@ available as quickly as possible, unknown anomalies should be expected.
The major version number will be incremented when significant changes
are made to the driver. Currently, there are no major changes planned.
5. Firmware installation
----------------------------------------------
3. Support
The driver requires a firmware image, download it and extract the
files under /lib/firmware (or wherever your hotplug's firmware.agent
will look for firmware files)
The firmware can be downloaded from the following URL:
http://ipw2200.sf.net/
6. Support
-----------------------------------------------
For installation support of the 1.0.0 version, you can contact
http://supportmail.intel.com, or you can use the open source project
For direct support of the 1.0.0 version, you can contact
http://supportmail.intel.com, or you can use the open source project
support.
For general information and support, go to:
@ -272,7 +405,7 @@ For general information and support, go to:
http://ipw2200.sf.net/
4. License
7. License
-----------------------------------------------
Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
@ -297,4 +430,3 @@ For general information and support, go to:
James P. Ketrenos <ipw2100-admin@linux.intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

56
Documentation/networking/dccp.txt Normal file
View file

@ -0,0 +1,56 @@
DCCP protocol
============
Last updated: 10 November 2005
Contents
========
- Introduction
- Missing features
- Socket options
- Notes
Introduction
============
Datagram Congestion Control Protocol (DCCP) is an unreliable, connection
based protocol designed to solve issues present in UDP and TCP particularly
for real time and multimedia traffic.
It has a base protocol and pluggable congestion control IDs (CCIDs).
It is at draft RFC status and the homepage for DCCP as a protocol is at:
http://www.icir.org/kohler/dcp/
Missing features
================
The DCCP implementation does not currently have all the features that are in
the draft RFC.
In particular the following are missing:
- CCID2 support
- feature negotiation
When testing against other implementations it appears that elapsed time
options are not coded compliant to the specification.
Socket options
==============
DCCP_SOCKOPT_PACKET_SIZE is used for CCID3 to set default packet size for
calculations.
DCCP_SOCKOPT_SERVICE sets the service. This is compulsory as per the
specification. If you don't set it you will get EPROTO.
Notes
=====
SELinux does not yet have support for DCCP. You will need to turn it off or
else you will get EACCES.
DCCP does not travel through NAT successfully at present. This is because
the checksum covers the psuedo-header as per TCP and UDP. It should be
relatively trivial to add Linux NAT support for DCCP.

2
Documentation/networking/decnet.txt
View file

@ -176,8 +176,6 @@ information (_most_ of which _is_ _essential_) includes:
- Which client caused the problem ?
- How much data was being transferred ?
- Was the network congested ?
- If there was a kernel panic, please run the output through ksymoops
before sending it to me, otherwise its _useless_.
- How can the problem be reproduced ?
- Can you use tcpdump to get a trace ? (N.B. Most (all?) versions of
tcpdump don't understand how to dump DECnet properly, so including

5
Documentation/networking/ip-sysctl.txt
View file

@ -78,6 +78,11 @@ inet_peer_gc_maxtime - INTEGER
TCP variables:
tcp_abc - INTEGER
Controls Appropriate Byte Count defined in RFC3465. If set to
0 then does congestion avoid once per ack. 1 is conservative
value, and 2 is more agressive.
tcp_syn_retries - INTEGER
Number of times initial SYNs for an active TCP connection attempt
will be retransmitted. Should not be higher than 255. Default value

2
Documentation/oops-tracing.txt
View file

@ -1,6 +1,6 @@
NOTE: ksymoops is useless on 2.6. Please use the Oops in its original format
(from dmesg, etc). Ignore any references in this or other docs to "decoding
the Oops" or "running it through ksymoops". If you post an Oops fron 2.6 that
the Oops" or "running it through ksymoops". If you post an Oops from 2.6 that
has been run through ksymoops, people will just tell you to repost it.
Quick Summary

17
Documentation/power/video.txt
View file

@ -11,9 +11,9 @@ boot video card. (Kernel usually does not even contain video card
driver -- vesafb and vgacon are widely used).
This is not problem for swsusp, because during swsusp resume, BIOS is
run normally so video card is normally initialized. S3 has absolutely
no chance of working with SMP/HT. Be sure it to turn it off before
testing (swsusp should work ok, OTOH).
run normally so video card is normally initialized. It should not be
problem for S1 standby, because hardware should retain its state over
that.
There are a few types of systems where video works after S3 resume:
@ -64,7 +64,7 @@ your video card (good luck getting docs :-(). Maybe suspending from X
(proper X, knowing your hardware, not XF68_FBcon) might have better
chance of working.
Table of known working systems:
Table of known working notebooks:
Model hack (or "how to do it")
------------------------------------------------------------------------------
@ -73,7 +73,7 @@ Acer TM 242FX vbetool (6)
Acer TM C110 video_post (8)
Acer TM C300 vga=normal (only suspend on console, not in X), vbetool (6) or video_post (8)
Acer TM 4052LCi s3_bios (2)
Acer TM 636Lci s3_bios vga=normal (2)
Acer TM 636Lci s3_bios,s3_mode (4)
Acer TM 650 (Radeon M7) vga=normal plus boot-radeon (5) gets text console back
Acer TM 660 ??? (*)
Acer TM 800 vga=normal, X patches, see webpage (5) or vbetool (6)
@ -137,6 +137,13 @@ Toshiba Satellite P10-554 s3_bios,s3_mode (4)(****)
Toshiba M30 (2) xor X with nvidia driver using internal AGP
Uniwill 244IIO ??? (*)
Known working desktop systems
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Mainboard Graphics card hack (or "how to do it")
------------------------------------------------------------------------------
Asus A7V8X nVidia RIVA TNT2 model 64 s3_bios,s3_mode (4)
(*) from http://www.ubuntulinux.org/wiki/HoaryPMResults, not sure
which options to use. If you know, please tell me.

2
Documentation/s390/Debugging390.txt
View file

@ -871,7 +871,7 @@ by playing with the --adjust-vma parameter to objdump.
extern inline void spin_lock(spinlock_t *lp)
static inline void spin_lock(spinlock_t *lp)
{
a0: 18 34 lr %r3,%r4
a2: a7 3a 03 bc ahi %r3,956

21
Documentation/s390/driver-model.txt
View file

@ -8,11 +8,10 @@ All devices which can be addressed by means of ccws are called 'CCW devices' -
even if they aren't actually driven by ccws.
All ccw devices are accessed via a subchannel, this is reflected in the
structures under root/:
structures under devices/:
root/
- sys
- legacy
devices/
- system/
- css0/
- 0.0.0000/0.0.0815/
- 0.0.0001/0.0.4711/
@ -36,7 +35,7 @@ availability: Can be 'good' or 'boxed'; 'no path' or 'no device' for
online: An interface to set the device online and offline.
In the special case of the device being disconnected (see the
notify function under 1.2), piping 0 to online will focibly delete
notify function under 1.2), piping 0 to online will forcibly delete
the device.
The device drivers can add entries to export per-device data and interfaces.
@ -222,7 +221,7 @@ and are called 'chp0.<chpid>'. They have no driver and do not belong to any bus.
Please note, that unlike /proc/chpids in 2.4, the channel path objects reflect
only the logical state and not the physical state, since we cannot track the
latter consistently due to lacking machine support (we don't need to be aware
of anyway).
of it anyway).
status - Can be 'online' or 'offline'.
Piping 'on' or 'off' sets the chpid logically online/offline.
@ -235,12 +234,16 @@ status - Can be 'online' or 'offline'.
3. System devices
-----------------
Note: cpus may yet be added here.
3.1 xpram
---------
xpram shows up under sys/ as 'xpram'.
xpram shows up under devices/system/ as 'xpram'.
3.2 cpus
--------
For each cpu, a directory is created under devices/system/cpu/. Each cpu has an
attribute 'online' which can be 0 or 1.
4. Other devices

89
Documentation/sched-arch.txt Normal file
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@ -0,0 +1,89 @@
CPU Scheduler implementation hints for architecture specific code
Nick Piggin, 2005
Context switch
==============
1. Runqueue locking
By default, the switch_to arch function is called with the runqueue
locked. This is usually not a problem unless switch_to may need to
take the runqueue lock. This is usually due to a wake up operation in
the context switch. See include/asm-ia64/system.h for an example.
To request the scheduler call switch_to with the runqueue unlocked,
you must `#define __ARCH_WANT_UNLOCKED_CTXSW` in a header file
(typically the one where switch_to is defined).
Unlocked context switches introduce only a very minor performance
penalty to the core scheduler implementation in the CONFIG_SMP case.
2. Interrupt status
By default, the switch_to arch function is called with interrupts
disabled. Interrupts may be enabled over the call if it is likely to
introduce a significant interrupt latency by adding the line
`#define __ARCH_WANT_INTERRUPTS_ON_CTXSW` in the same place as for
unlocked context switches. This define also implies
`__ARCH_WANT_UNLOCKED_CTXSW`. See include/asm-arm/system.h for an
example.
CPU idle
========
Your cpu_idle routines need to obey the following rules:
1. Preempt should now disabled over idle routines. Should only
be enabled to call schedule() then disabled again.
2. need_resched/TIF_NEED_RESCHED is only ever set, and will never
be cleared until the running task has called schedule(). Idle
threads need only ever query need_resched, and may never set or
clear it.
3. When cpu_idle finds (need_resched() == 'true'), it should call
schedule(). It should not call schedule() otherwise.
4. The only time interrupts need to be disabled when checking
need_resched is if we are about to sleep the processor until
the next interrupt (this doesn't provide any protection of
need_resched, it prevents losing an interrupt).
4a. Common problem with this type of sleep appears to be:
local_irq_disable();
if (!need_resched()) {
local_irq_enable();
*** resched interrupt arrives here ***
__asm__("sleep until next interrupt");
}
5. TIF_POLLING_NRFLAG can be set by idle routines that do not
need an interrupt to wake them up when need_resched goes high.
In other words, they must be periodically polling need_resched,
although it may be reasonable to do some background work or enter
a low CPU priority.
5a. If TIF_POLLING_NRFLAG is set, and we do decide to enter
an interrupt sleep, it needs to be cleared then a memory
barrier issued (followed by a test of need_resched with
interrupts disabled, as explained in 3).
arch/i386/kernel/process.c has examples of both polling and
sleeping idle functions.
Possible arch/ problems
=======================
Possible arch problems I found (and either tried to fix or didn't):
h8300 - Is such sleeping racy vs interrupts? (See #4a).
The H8/300 manual I found indicates yes, however disabling IRQs
over the sleep mean only NMIs can wake it up, so can't fix easily
without doing spin waiting.
ia64 - is safe_halt call racy vs interrupts? (does it sleep?) (See #4a)
sh64 - Is sleeping racy vs interrupts? (See #4a)
sparc - IRQs on at this point(?), change local_irq_save to _disable.
- TODO: needs secondary CPUs to disable preempt (See #1)

1060
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File diff suppressed because it is too large Load diff

29
Documentation/sound/alsa/ALSA-Configuration.txt
View file

@ -167,7 +167,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
spdif - Support SPDIF I/O
- Default: disabled
Module supports autoprobe and multiple chips (max 8).
This module supports one chip and autoprobe.
The power-management is supported.
@ -206,7 +206,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
See "AC97 Quirk Option" section below.
spdif_aclink - S/PDIF transfer over AC-link (default = 1)
This module supports up to 8 cards and autoprobe.
This module supports one card and autoprobe.
ATI IXP has two different methods to control SPDIF output. One is
over AC-link and another is over the "direct" SPDIF output. The
@ -218,7 +218,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module for ATI IXP 150/200/250 AC97 modem controllers.
Module supports up to 8 cards.
This module supports one card and autoprobe.
Note: The default index value of this module is -2, i.e. the first
slot is excluded.
@ -637,7 +637,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
model - force the model name
position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
Module supports up to 8 cards.
This module supports one card and autoprobe.
Each codec may have a model table for different configurations.
If your machine isn't listed there, the default (usually minimal)
@ -663,6 +663,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
adjusted. Appearing only when compiled with
$CONFIG_SND_DEBUG=y
ALC260
hp HP machines
fujitsu Fujitsu S7020
CMI9880
minimal 3-jack in back
min_fp 3-jack in back, 2-jack in front
@ -811,7 +815,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
semaphores (e.g. on some ASUS laptops)
(default off)
Module supports autoprobe and multiple bus-master chips (max 8).
This module supports one chip and autoprobe.
Note: the latest driver supports auto-detection of chip clock.
if you still encounter too fast playback, specify the clock
@ -830,7 +834,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
ac97_clock - AC'97 codec clock base (0 = auto-detect)
This module supports up to 8 cards and autoprobe.
This module supports one card and autoprobe.
Note: The default index value of this module is -2, i.e. the first
slot is excluded.
@ -950,8 +954,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
use_cache - 0 or 1 (disabled by default)
vaio_hack - alias buffer_top=0x25a800
reset_workaround - enable AC97 RESET workaround for some laptops
reset_workaround2 - enable extended AC97 RESET workaround for some
other laptops
Module supports autoprobe and multiple chips (max 8).
This module supports one chip and autoprobe.
The power-management is supported.
@ -980,6 +986,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
workaround is enabled automatically. For other laptops with a
hard freeze, you can try reset_workaround=1 option.
Note: Dell Latitude CSx laptops have another problem regarding
AC97 RESET. On these laptops, reset_workaround2 option is
turned on as default. This option is worth to try if the
previous reset_workaround option doesn't help.
Note: This driver is really crappy. It's a porting from the
OSS driver, which is a result of black-magic reverse engineering.
The detection of codec will fail if the driver is loaded *after*
@ -1310,7 +1321,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
ac97_quirk - AC'97 workaround for strange hardware
See "AC97 Quirk Option" section below.
Module supports autoprobe and multiple bus-master chips (max 8).
This module supports one chip and autoprobe.
Note: on some SMP motherboards like MSI 694D the interrupts might
not be generated properly. In such a case, please try to
@ -1352,7 +1363,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
ac97_clock - AC'97 codec clock base (default 48000Hz)
Module supports up to 8 cards.
This module supports one card and autoprobe.
Note: The default index value of this module is -2, i.e. the first
slot is excluded.

56
Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
View file

@ -18,8 +18,8 @@
</affiliation>
</author>
<date>March 6, 2005</date>
<edition>0.3.4</edition>
<date>October 6, 2005</date>
<edition>0.3.5</edition>
<abstract>
<para>
@ -30,7 +30,7 @@
<legalnotice>
<para>
Copyright (c) 2002-2004 Takashi Iwai <email>tiwai@suse.de</email>
Copyright (c) 2002-2005 Takashi Iwai <email>tiwai@suse.de</email>
</para>
<para>
@ -1433,25 +1433,10 @@
<informalexample>
<programlisting>
<![CDATA[
if (chip->res_port) {
release_resource(chip->res_port);
kfree_nocheck(chip->res_port);
}
release_and_free_resource(chip->res_port);
]]>
</programlisting>
</informalexample>
As you can see, the resource pointer is also to be freed
via <function>kfree_nocheck()</function> after
<function>release_resource()</function> is called. You
cannot use <function>kfree()</function> here, because on ALSA,
<function>kfree()</function> may be a wrapper to its own
allocator with the memory debugging. Since the resource pointer
is allocated externally outside the ALSA, it must be released
via the native
<function>kfree()</function>.
<function>kfree_nocheck()</function> is used for that; it calls
the native <function>kfree()</function> without wrapper.
</para>
<para>
@ -2190,8 +2175,7 @@ struct _snd_pcm_runtime {
unsigned int rate_den;
/* -- SW params -- */
int tstamp_timespec; /* use timeval (0) or timespec (1) */
snd_pcm_tstamp_t tstamp_mode; /* mmap timestamp is updated */
struct timespec tstamp_mode; /* mmap timestamp is updated */
unsigned int period_step;
unsigned int sleep_min; /* min ticks to sleep */
snd_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */
@ -3709,8 +3693,7 @@ struct _snd_pcm_runtime {
<para>
Here, the chip instance is retrieved via
<function>snd_kcontrol_chip()</function> macro. This macro
converts from kcontrol-&gt;private_data to the type defined by
<type>chip_t</type>. The
just accesses to kcontrol-&gt;private_data. The
kcontrol-&gt;private_data field is
given as the argument of <function>snd_ctl_new()</function>
(see the later subsection
@ -5998,32 +5981,23 @@ struct _snd_pcm_runtime {
The first argument is the expression to evaluate, and the
second argument is the action if it fails. When
<constant>CONFIG_SND_DEBUG</constant>, is set, it will show an
error message such as <computeroutput>BUG? (xxx) (called from
yyy)</computeroutput>. When no debug flag is set, this is
ignored.
error message such as <computeroutput>BUG? (xxx)</computeroutput>
together with stack trace.
</para>
</section>
<section id="useful-functions-snd-runtime-check">
<title><function>snd_runtime_check()</function></title>
<para>
This macro is quite similar with
<function>snd_assert()</function>. Unlike
<function>snd_assert()</function>, the expression is always
evaluated regardless of
<constant>CONFIG_SND_DEBUG</constant>. When
<constant>CONFIG_SND_DEBUG</constant> is set, the macro will
show a message like <computeroutput>ERROR (xx) (called from
yyy)</computeroutput>.
When no debug flag is set, this macro is ignored.
</para>
</section>
<section id="useful-functions-snd-bug">
<title><function>snd_BUG()</function></title>
<para>
It calls <function>snd_assert(0,)</function> -- that is, just
prints the error message at the point. It's useful to show that
a fatal error happens there.
It shows <computeroutput>BUG?</computeroutput> message and
stack trace as well as <function>snd_assert</function> at the point.
It's useful to show that a fatal error happens there.
</para>
<para>
When no debug flag is set, this macro is ignored.
</para>
</section>
</chapter>

4
Documentation/sparse.txt
View file

@ -41,9 +41,9 @@ sure that bitwise types don't get mixed up (little-endian vs big-endian
vs cpu-endian vs whatever), and there the constant "0" really _is_
special.
Modify top-level Makefile to say
Use
CHECK = sparse -Wbitwise
make C=[12] CF=-Wbitwise
or you don't get any checking at all.

2
Documentation/video4linux/API.html
View file

@ -8,7 +8,7 @@ V4L original API</a>
</td><td>
Obsoleted by V4L2 API
</td></tr><tr><td>
<A HREF=http://www.linuxtv.org/downloads/video4linux/API/V4L2_API.html>
<A HREF=http://www.linuxtv.org/downloads/video4linux/API/V4L2_API>
V4L2 API</a>
</td><td>
Should be used for new projects

279
Documentation/video4linux/CARDLIST.bttv
View file

@ -1,137 +1,142 @@
card=0 - *** UNKNOWN/GENERIC ***
card=1 - MIRO PCTV
card=2 - Hauppauge (bt848)
card=3 - STB, Gateway P/N 6000699 (bt848)
card=4 - Intel Create and Share PCI/ Smart Video Recorder III
card=5 - Diamond DTV2000
card=6 - AVerMedia TVPhone
card=7 - MATRIX-Vision MV-Delta
card=8 - Lifeview FlyVideo II (Bt848) LR26 / MAXI TV Video PCI2 LR26
card=9 - IMS/IXmicro TurboTV
card=10 - Hauppauge (bt878)
card=11 - MIRO PCTV pro
card=12 - ADS Technologies Channel Surfer TV (bt848)
card=13 - AVerMedia TVCapture 98
card=14 - Aimslab Video Highway Xtreme (VHX)
card=15 - Zoltrix TV-Max
card=16 - Prolink Pixelview PlayTV (bt878)
card=17 - Leadtek WinView 601
card=18 - AVEC Intercapture
card=19 - Lifeview FlyVideo II EZ /FlyKit LR38 Bt848 (capture only)
card=20 - CEI Raffles Card
card=21 - Lifeview FlyVideo 98/ Lucky Star Image World ConferenceTV LR50
card=22 - Askey CPH050/ Phoebe Tv Master + FM
card=23 - Modular Technology MM201/MM202/MM205/MM210/MM215 PCTV, bt878
card=24 - Askey CPH05X/06X (bt878) [many vendors]
card=25 - Terratec TerraTV+ Version 1.0 (Bt848)/ Terra TValue Version 1.0/ Vobis TV-Boostar
card=26 - Hauppauge WinCam newer (bt878)
card=27 - Lifeview FlyVideo 98/ MAXI TV Video PCI2 LR50
card=28 - Terratec TerraTV+ Version 1.1 (bt878)
card=29 - Imagenation PXC200
card=30 - Lifeview FlyVideo 98 LR50
card=31 - Formac iProTV, Formac ProTV I (bt848)
card=32 - Intel Create and Share PCI/ Smart Video Recorder III
card=33 - Terratec TerraTValue Version Bt878
card=34 - Leadtek WinFast 2000/ WinFast 2000 XP
card=35 - Lifeview FlyVideo 98 LR50 / Chronos Video Shuttle II
card=36 - Lifeview FlyVideo 98FM LR50 / Typhoon TView TV/FM Tuner
card=37 - Prolink PixelView PlayTV pro
card=38 - Askey CPH06X TView99
card=39 - Pinnacle PCTV Studio/Rave
card=40 - STB TV PCI FM, Gateway P/N 6000704 (bt878), 3Dfx VoodooTV 100
card=41 - AVerMedia TVPhone 98
card=42 - ProVideo PV951
card=43 - Little OnAir TV
card=44 - Sigma TVII-FM
card=45 - MATRIX-Vision MV-Delta 2
card=46 - Zoltrix Genie TV/FM
card=47 - Terratec TV/Radio+
card=48 - Askey CPH03x/ Dynalink Magic TView
card=49 - IODATA GV-BCTV3/PCI
card=50 - Prolink PV-BT878P+4E / PixelView PlayTV PAK / Lenco MXTV-9578 CP
card=51 - Eagle Wireless Capricorn2 (bt878A)
card=52 - Pinnacle PCTV Studio Pro
card=53 - Typhoon TView RDS + FM Stereo / KNC1 TV Station RDS
card=54 - Lifeview FlyVideo 2000 /FlyVideo A2/ Lifetec LT 9415 TV [LR90]
card=55 - Askey CPH031/ BESTBUY Easy TV
card=56 - Lifeview FlyVideo 98FM LR50
card=57 - GrandTec 'Grand Video Capture' (Bt848)
card=58 - Askey CPH060/ Phoebe TV Master Only (No FM)
card=59 - Askey CPH03x TV Capturer
card=60 - Modular Technology MM100PCTV
card=61 - AG Electronics GMV1
card=62 - Askey CPH061/ BESTBUY Easy TV (bt878)
card=63 - ATI TV-Wonder
card=64 - ATI TV-Wonder VE
card=65 - Lifeview FlyVideo 2000S LR90
card=66 - Terratec TValueRadio
card=67 - IODATA GV-BCTV4/PCI
card=68 - 3Dfx VoodooTV FM (Euro), VoodooTV 200 (USA)
card=69 - Active Imaging AIMMS
card=70 - Prolink Pixelview PV-BT878P+ (Rev.4C,8E)
card=71 - Lifeview FlyVideo 98EZ (capture only) LR51
card=72 - Prolink Pixelview PV-BT878P+9B (PlayTV Pro rev.9B FM+NICAM)
card=73 - Sensoray 311
card=74 - RemoteVision MX (RV605)
card=75 - Powercolor MTV878/ MTV878R/ MTV878F
card=76 - Canopus WinDVR PCI (COMPAQ Presario 3524JP, 5112JP)
card=77 - GrandTec Multi Capture Card (Bt878)
card=78 - Jetway TV/Capture JW-TV878-FBK, Kworld KW-TV878RF
card=79 - DSP Design TCVIDEO
card=80 - Hauppauge WinTV PVR
card=81 - IODATA GV-BCTV5/PCI
card=82 - Osprey 100/150 (878)
card=83 - Osprey 100/150 (848)
card=84 - Osprey 101 (848)
card=85 - Osprey 101/151
card=86 - Osprey 101/151 w/ svid
card=87 - Osprey 200/201/250/251
card=88 - Osprey 200/250
card=89 - Osprey 210/220
card=90 - Osprey 500
card=91 - Osprey 540
card=92 - Osprey 2000
card=93 - IDS Eagle
card=94 - Pinnacle PCTV Sat
card=95 - Formac ProTV II (bt878)
card=96 - MachTV
card=97 - Euresys Picolo
card=98 - ProVideo PV150
card=99 - AD-TVK503
card=100 - Hercules Smart TV Stereo
card=101 - Pace TV & Radio Card
card=102 - IVC-200
card=103 - Grand X-Guard / Trust 814PCI
card=104 - Nebula Electronics DigiTV
card=105 - ProVideo PV143
card=106 - PHYTEC VD-009-X1 MiniDIN (bt878)
card=107 - PHYTEC VD-009-X1 Combi (bt878)
card=108 - PHYTEC VD-009 MiniDIN (bt878)
card=109 - PHYTEC VD-009 Combi (bt878)
card=110 - IVC-100
card=111 - IVC-120G
card=112 - pcHDTV HD-2000 TV
card=113 - Twinhan DST + clones
card=114 - Winfast VC100
card=115 - Teppro TEV-560/InterVision IV-560
card=116 - SIMUS GVC1100
card=117 - NGS NGSTV+
card=118 - LMLBT4
card=119 - Tekram M205 PRO
card=120 - Conceptronic CONTVFMi
card=121 - Euresys Picolo Tetra
card=122 - Spirit TV Tuner
card=123 - AVerMedia AVerTV DVB-T 771
card=124 - AverMedia AverTV DVB-T 761
card=125 - MATRIX Vision Sigma-SQ
card=126 - MATRIX Vision Sigma-SLC
card=127 - APAC Viewcomp 878(AMAX)
card=128 - DViCO FusionHDTV DVB-T Lite
card=129 - V-Gear MyVCD
card=130 - Super TV Tuner
card=131 - Tibet Systems 'Progress DVR' CS16
card=132 - Kodicom 4400R (master)
card=133 - Kodicom 4400R (slave)
card=134 - Adlink RTV24
card=135 - DViCO FusionHDTV 5 Lite
card=136 - Acorp Y878F
0 -> *** UNKNOWN/GENERIC ***
1 -> MIRO PCTV
2 -> Hauppauge (bt848)
3 -> STB, Gateway P/N 6000699 (bt848)
4 -> Intel Create and Share PCI/ Smart Video Recorder III
5 -> Diamond DTV2000
6 -> AVerMedia TVPhone
7 -> MATRIX-Vision MV-Delta
8 -> Lifeview FlyVideo II (Bt848) LR26 / MAXI TV Video PCI2 LR26
9 -> IMS/IXmicro TurboTV
10 -> Hauppauge (bt878) [0070:13eb,0070:3900,2636:10b4]
11 -> MIRO PCTV pro
12 -> ADS Technologies Channel Surfer TV (bt848)
13 -> AVerMedia TVCapture 98 [1461:0002,1461:0004,1461:0300]
14 -> Aimslab Video Highway Xtreme (VHX)
15 -> Zoltrix TV-Max [a1a0:a0fc]
16 -> Prolink Pixelview PlayTV (bt878)
17 -> Leadtek WinView 601
18 -> AVEC Intercapture
19 -> Lifeview FlyVideo II EZ /FlyKit LR38 Bt848 (capture only)
20 -> CEI Raffles Card
21 -> Lifeview FlyVideo 98/ Lucky Star Image World ConferenceTV LR50
22 -> Askey CPH050/ Phoebe Tv Master + FM [14ff:3002]
23 -> Modular Technology MM201/MM202/MM205/MM210/MM215 PCTV, bt878 [14c7:0101]
24 -> Askey CPH05X/06X (bt878) [many vendors] [144f:3002,144f:3005,144f:5000,14ff:3000]
25 -> Terratec TerraTV+ Version 1.0 (Bt848)/ Terra TValue Version 1.0/ Vobis TV-Boostar
26 -> Hauppauge WinCam newer (bt878)
27 -> Lifeview FlyVideo 98/ MAXI TV Video PCI2 LR50
28 -> Terratec TerraTV+ Version 1.1 (bt878) [153b:1127,1852:1852]
29 -> Imagenation PXC200 [1295:200a]
30 -> Lifeview FlyVideo 98 LR50 [1f7f:1850]
31 -> Formac iProTV, Formac ProTV I (bt848)
32 -> Intel Create and Share PCI/ Smart Video Recorder III
33 -> Terratec TerraTValue Version Bt878 [153b:1117,153b:1118,153b:1119,153b:111a,153b:1134,153b:5018]
34 -> Leadtek WinFast 2000/ WinFast 2000 XP [107d:6606,107d:6609,6606:217d,f6ff:fff6]
35 -> Lifeview FlyVideo 98 LR50 / Chronos Video Shuttle II [1851:1850,1851:a050]
36 -> Lifeview FlyVideo 98FM LR50 / Typhoon TView TV/FM Tuner [1852:1852]
37 -> Prolink PixelView PlayTV pro
38 -> Askey CPH06X TView99 [144f:3000,144f:a005,a04f:a0fc]
39 -> Pinnacle PCTV Studio/Rave [11bd:0012,bd11:1200,bd11:ff00,11bd:ff12]
40 -> STB TV PCI FM, Gateway P/N 6000704 (bt878), 3Dfx VoodooTV 100 [10b4:2636,10b4:2645,121a:3060]
41 -> AVerMedia TVPhone 98 [1461:0001,1461:0003]
42 -> ProVideo PV951 [aa0c:146c]
43 -> Little OnAir TV
44 -> Sigma TVII-FM
45 -> MATRIX-Vision MV-Delta 2
46 -> Zoltrix Genie TV/FM [15b0:4000,15b0:400a,15b0:400d,15b0:4010,15b0:4016]
47 -> Terratec TV/Radio+ [153b:1123]
48 -> Askey CPH03x/ Dynalink Magic TView
49 -> IODATA GV-BCTV3/PCI [10fc:4020]
50 -> Prolink PV-BT878P+4E / PixelView PlayTV PAK / Lenco MXTV-9578 CP
51 -> Eagle Wireless Capricorn2 (bt878A)
52 -> Pinnacle PCTV Studio Pro
53 -> Typhoon TView RDS + FM Stereo / KNC1 TV Station RDS
54 -> Lifeview FlyVideo 2000 /FlyVideo A2/ Lifetec LT 9415 TV [LR90]
55 -> Askey CPH031/ BESTBUY Easy TV
56 -> Lifeview FlyVideo 98FM LR50 [a051:41a0]
57 -> GrandTec 'Grand Video Capture' (Bt848) [4344:4142]
58 -> Askey CPH060/ Phoebe TV Master Only (No FM)
59 -> Askey CPH03x TV Capturer
60 -> Modular Technology MM100PCTV
61 -> AG Electronics GMV1 [15cb:0101]
62 -> Askey CPH061/ BESTBUY Easy TV (bt878)
63 -> ATI TV-Wonder [1002:0001]
64 -> ATI TV-Wonder VE [1002:0003]
65 -> Lifeview FlyVideo 2000S LR90
66 -> Terratec TValueRadio [153b:1135,153b:ff3b]
67 -> IODATA GV-BCTV4/PCI [10fc:4050]
68 -> 3Dfx VoodooTV FM (Euro), VoodooTV 200 (USA) [121a:3000,10b4:2637]
69 -> Active Imaging AIMMS
70 -> Prolink Pixelview PV-BT878P+ (Rev.4C,8E)
71 -> Lifeview FlyVideo 98EZ (capture only) LR51 [1851:1851]
72 -> Prolink Pixelview PV-BT878P+9B (PlayTV Pro rev.9B FM+NICAM) [1554:4011]
73 -> Sensoray 311 [6000:0311]
74 -> RemoteVision MX (RV605)
75 -> Powercolor MTV878/ MTV878R/ MTV878F
76 -> Canopus WinDVR PCI (COMPAQ Presario 3524JP, 5112JP) [0e11:0079]
77 -> GrandTec Multi Capture Card (Bt878)
78 -> Jetway TV/Capture JW-TV878-FBK, Kworld KW-TV878RF [0a01:17de]
79 -> DSP Design TCVIDEO
80 -> Hauppauge WinTV PVR [0070:4500]
81 -> IODATA GV-BCTV5/PCI [10fc:4070,10fc:d018]
82 -> Osprey 100/150 (878) [0070:ff00]
83 -> Osprey 100/150 (848)
84 -> Osprey 101 (848)
85 -> Osprey 101/151
86 -> Osprey 101/151 w/ svid
87 -> Osprey 200/201/250/251
88 -> Osprey 200/250 [0070:ff01]
89 -> Osprey 210/220
90 -> Osprey 500 [0070:ff02]
91 -> Osprey 540 [0070:ff04]
92 -> Osprey 2000 [0070:ff03]
93 -> IDS Eagle
94 -> Pinnacle PCTV Sat [11bd:001c]
95 -> Formac ProTV II (bt878)
96 -> MachTV
97 -> Euresys Picolo
98 -> ProVideo PV150 [aa00:1460,aa01:1461,aa02:1462,aa03:1463,aa04:1464,aa05:1465,aa06:1466,aa07:1467]
99 -> AD-TVK503
100 -> Hercules Smart TV Stereo
101 -> Pace TV & Radio Card
102 -> IVC-200 [0000:a155,0001:a155,0002:a155,0003:a155,0100:a155,0101:a155,0102:a155,0103:a155]
103 -> Grand X-Guard / Trust 814PCI [0304:0102]
104 -> Nebula Electronics DigiTV [0071:0101]
105 -> ProVideo PV143 [aa00:1430,aa00:1431,aa00:1432,aa00:1433,aa03:1433]
106 -> PHYTEC VD-009-X1 MiniDIN (bt878)
107 -> PHYTEC VD-009-X1 Combi (bt878)
108 -> PHYTEC VD-009 MiniDIN (bt878)
109 -> PHYTEC VD-009 Combi (bt878)
110 -> IVC-100 [ff00:a132]
111 -> IVC-120G [ff00:a182,ff01:a182,ff02:a182,ff03:a182,ff04:a182,ff05:a182,ff06:a182,ff07:a182,ff08:a182,ff09:a182,ff0a:a182,ff0b:a182,ff0c:a182,ff0d:a182,ff0e:a182,ff0f:a182]
112 -> pcHDTV HD-2000 TV [7063:2000]
113 -> Twinhan DST + clones [11bd:0026,1822:0001,270f:fc00]
114 -> Winfast VC100 [107d:6607]
115 -> Teppro TEV-560/InterVision IV-560
116 -> SIMUS GVC1100 [aa6a:82b2]
117 -> NGS NGSTV+
118 -> LMLBT4
119 -> Tekram M205 PRO
120 -> Conceptronic CONTVFMi
121 -> Euresys Picolo Tetra [1805:0105,1805:0106,1805:0107,1805:0108]
122 -> Spirit TV Tuner
123 -> AVerMedia AVerTV DVB-T 771 [1461:0771]
124 -> AverMedia AverTV DVB-T 761 [1461:0761]
125 -> MATRIX Vision Sigma-SQ
126 -> MATRIX Vision Sigma-SLC
127 -> APAC Viewcomp 878(AMAX)
128 -> DViCO FusionHDTV DVB-T Lite [18ac:db10]
129 -> V-Gear MyVCD
130 -> Super TV Tuner
131 -> Tibet Systems 'Progress DVR' CS16
132 -> Kodicom 4400R (master)
133 -> Kodicom 4400R (slave)
134 -> Adlink RTV24
135 -> DViCO FusionHDTV 5 Lite [18ac:d500]
136 -> Acorp Y878F [9511:1540]
137 -> Conceptronic CTVFMi v2
138 -> Prolink Pixelview PV-BT878P+ (Rev.2E)
139 -> Prolink PixelView PlayTV MPEG2 PV-M4900
140 -> Osprey 440 [0070:ff07]
141 -> Asound Skyeye PCTV

69
Documentation/video4linux/CARDLIST.cx88
View file

@ -1,32 +1,37 @@
card=0 - UNKNOWN/GENERIC
card=1 - Hauppauge WinTV 34xxx models
card=2 - GDI Black Gold
card=3 - PixelView
card=4 - ATI TV Wonder Pro
card=5 - Leadtek Winfast 2000XP Expert
card=6 - AverTV Studio 303 (M126)
card=7 - MSI TV-@nywhere Master
card=8 - Leadtek Winfast DV2000
card=9 - Leadtek PVR 2000
card=10 - IODATA GV-VCP3/PCI
card=11 - Prolink PlayTV PVR
card=12 - ASUS PVR-416
card=13 - MSI TV-@nywhere
card=14 - KWorld/VStream XPert DVB-T
card=15 - DViCO FusionHDTV DVB-T1
card=16 - KWorld LTV883RF
card=17 - DViCO FusionHDTV 3 Gold-Q
card=18 - Hauppauge Nova-T DVB-T
card=19 - Conexant DVB-T reference design
card=20 - Provideo PV259
card=21 - DViCO FusionHDTV DVB-T Plus
card=22 - digitalnow DNTV Live! DVB-T
card=23 - pcHDTV HD3000 HDTV
card=24 - Hauppauge WinTV 28xxx (Roslyn) models
card=25 - Digital-Logic MICROSPACE Entertainment Center (MEC)
card=26 - IODATA GV/BCTV7E
card=27 - PixelView PlayTV Ultra Pro (Stereo)
card=28 - DViCO FusionHDTV 3 Gold-T
card=29 - ADS Tech Instant TV DVB-T PCI
card=30 - TerraTec Cinergy 1400 DVB-T
card=31 - DViCO FusionHDTV 5 Gold
0 -> UNKNOWN/GENERIC
1 -> Hauppauge WinTV 34xxx models [0070:3400,0070:3401]
2 -> GDI Black Gold [14c7:0106,14c7:0107]
3 -> PixelView [1554:4811]
4 -> ATI TV Wonder Pro [1002:00f8]
5 -> Leadtek Winfast 2000XP Expert [107d:6611,107d:6613]
6 -> AverTV Studio 303 (M126) [1461:000b]
7 -> MSI TV-@nywhere Master [1462:8606]
8 -> Leadtek Winfast DV2000 [107d:6620]
9 -> Leadtek PVR 2000 [107d:663b,107d:663C]
10 -> IODATA GV-VCP3/PCI [10fc:d003]
11 -> Prolink PlayTV PVR
12 -> ASUS PVR-416 [1043:4823]
13 -> MSI TV-@nywhere
14 -> KWorld/VStream XPert DVB-T [17de:08a6]
15 -> DViCO FusionHDTV DVB-T1 [18ac:db00]
16 -> KWorld LTV883RF
17 -> DViCO FusionHDTV 3 Gold-Q [18ac:d810]
18 -> Hauppauge Nova-T DVB-T [0070:9002]
19 -> Conexant DVB-T reference design [14f1:0187]
20 -> Provideo PV259 [1540:2580]
21 -> DViCO FusionHDTV DVB-T Plus [18ac:db10]
22 -> pcHDTV HD3000 HDTV [7063:3000]
23 -> digitalnow DNTV Live! DVB-T [17de:a8a6]
24 -> Hauppauge WinTV 28xxx (Roslyn) models [0070:2801]
25 -> Digital-Logic MICROSPACE Entertainment Center (MEC) [14f1:0342]
26 -> IODATA GV/BCTV7E [10fc:d035]
27 -> PixelView PlayTV Ultra Pro (Stereo)
28 -> DViCO FusionHDTV 3 Gold-T [18ac:d820]
29 -> ADS Tech Instant TV DVB-T PCI [1421:0334]
30 -> TerraTec Cinergy 1400 DVB-T [153b:1166]
31 -> DViCO FusionHDTV 5 Gold [18ac:d500]
32 -> AverMedia UltraTV Media Center PCI 550 [1461:8011]
33 -> Kworld V-Stream Xpert DVD
34 -> ATI HDTV Wonder [1002:a101]
35 -> WinFast DTV1000-T [107d:665f]
36 -> AVerTV 303 (M126) [1461:000a]

10
Documentation/video4linux/CARDLIST.em28xx Normal file
View file

@ -0,0 +1,10 @@
0 -> Unknown EM2800 video grabber (em2800) [eb1a:2800]
1 -> Unknown EM2820/2840 video grabber (em2820/em2840)
2 -> Terratec Cinergy 250 USB (em2820/em2840) [0ccd:0036]
3 -> Pinnacle PCTV USB 2 (em2820/em2840) [2304:0208]
4 -> Hauppauge WinTV USB 2 (em2820/em2840) [2040:4200]
5 -> MSI VOX USB 2.0 (em2820/em2840) [eb1a:2820]
6 -> Terratec Cinergy 200 USB (em2800)
7 -> Leadtek Winfast USB II (em2800)
8 -> Kworld USB2800 (em2800)
9 -> Pinnacle Dazzle DVC 90 (em2820/em2840) [2304:0207]

29
Documentation/video4linux/CARDLIST.saa7134
View file

@ -6,10 +6,10 @@
5 -> SKNet Monster TV [1131:4e85]
6 -> Tevion MD 9717
7 -> KNC One TV-Station RDS / Typhoon TV Tuner RDS [1131:fe01,1894:fe01]
8 -> Terratec Cinergy 400 TV [153B:1142]
8 -> Terratec Cinergy 400 TV [153b:1142]
9 -> Medion 5044
10 -> Kworld/KuroutoShikou SAA7130-TVPCI
11 -> Terratec Cinergy 600 TV [153B:1143]
11 -> Terratec Cinergy 600 TV [153b:1143]
12 -> Medion 7134 [16be:0003]
13 -> Typhoon TV+Radio 90031
14 -> ELSA EX-VISION 300TV [1048:226b]
@ -36,8 +36,8 @@
35 -> AverMedia AverTV Studio 305 [1461:2115]
36 -> UPMOST PURPLE TV [12ab:0800]
37 -> Items MuchTV Plus / IT-005
38 -> Terratec Cinergy 200 TV [153B:1152]
39 -> LifeView FlyTV Platinum Mini [5168:0212]
38 -> Terratec Cinergy 200 TV [153b:1152]
39 -> LifeView FlyTV Platinum Mini [5168:0212,4e42:0212]
40 -> Compro VideoMate TV PVR/FM [185b:c100]
41 -> Compro VideoMate TV Gold+ [185b:c100]
42 -> Sabrent SBT-TVFM (saa7130)
@ -46,7 +46,7 @@
45 -> Avermedia AVerTV Studio 307 [1461:9715]
46 -> AVerMedia Cardbus TV/Radio (E500) [1461:d6ee]
47 -> Terratec Cinergy 400 mobile [153b:1162]
48 -> Terratec Cinergy 600 TV MK3 [153B:1158]
48 -> Terratec Cinergy 600 TV MK3 [153b:1158]
49 -> Compro VideoMate Gold+ Pal [185b:c200]
50 -> Pinnacle PCTV 300i DVB-T + PAL [11bd:002d]
51 -> ProVideo PV952 [1540:9524]
@ -56,12 +56,27 @@
55 -> LifeView FlyDVB-T DUO [5168:0502,5168:0306]
56 -> Avermedia AVerTV 307 [1461:a70a]
57 -> Avermedia AVerTV GO 007 FM [1461:f31f]
58 -> ADS Tech Instant TV (saa7135) [1421:0350,1421:0370]
58 -> ADS Tech Instant TV (saa7135) [1421:0350,1421:0370,1421:1370]
59 -> Kworld/Tevion V-Stream Xpert TV PVR7134
60 -> Typhoon DVB-T Duo Digital/Analog Cardbus [4e42:0502]
61 -> Philips TOUGH DVB-T reference design [1131:2004]
62 -> Compro VideoMate TV Gold+II
63 -> Kworld Xpert TV PVR7134
64 -> FlyTV mini Asus Digimatrix [1043:0210,1043:0210]
64 -> FlyTV mini Asus Digimatrix [1043:0210]
65 -> V-Stream Studio TV Terminator
66 -> Yuan TUN-900 (saa7135)
67 -> Beholder BeholdTV 409 FM [0000:4091]
68 -> GoTView 7135 PCI [5456:7135]
69 -> Philips EUROPA V3 reference design [1131:2004]
70 -> Compro Videomate DVB-T300 [185b:c900]
71 -> Compro Videomate DVB-T200 [185b:c901]
72 -> RTD Embedded Technologies VFG7350 [1435:7350]
73 -> RTD Embedded Technologies VFG7330 [1435:7330]
74 -> LifeView FlyTV Platinum Mini2 [14c0:1212]
75 -> AVerMedia AVerTVHD MCE A180 [1461:1044]
76 -> SKNet MonsterTV Mobile [1131:4ee9]
77 -> Pinnacle PCTV 110i (saa7133) [11bd:002e]
78 -> ASUSTeK P7131 Dual [1043:4862]
79 -> Sedna/MuchTV PC TV Cardbus TV/Radio (ITO25 Rev:2B)
80 -> ASUS Digimatrix TV [1043:0210]
81 -> Philips Tiger reference design [1131:2018]

4
Documentation/video4linux/CARDLIST.tuner
View file

@ -53,7 +53,7 @@ tuner=51 - Philips PAL/SECAM_D (FM 1256 I-H3)
tuner=52 - Thomson DDT 7610 (ATSC/NTSC)
tuner=53 - Philips FQ1286
tuner=54 - tda8290+75
tuner=55 - LG PAL (TAPE series)
tuner=55 - TCL 2002MB
tuner=56 - Philips PAL/SECAM multi (FQ1216AME MK4)
tuner=57 - Philips FQ1236A MK4
tuner=58 - Ymec TVision TVF-8531MF/8831MF/8731MF
@ -65,3 +65,5 @@ tuner=63 - Philips FMD1216ME MK3 Hybrid Tuner
tuner=64 - LG TDVS-H062F/TUA6034
tuner=65 - Ymec TVF66T5-B/DFF
tuner=66 - LG NTSC (TALN mini series)
tuner=67 - Philips TD1316 Hybrid Tuner
tuner=68 - Philips TUV1236D ATSC/NTSC dual in

8
Documentation/video4linux/README.cx88
View file

@ -17,9 +17,9 @@ audio
- The chip specs for the on-chip TV sound decoder are next
to useless :-/
- Neverless the builtin TV sound decoder starts working now,
at least for PAL-BG. Other TV norms need other code ...
FOR ANY REPORTS ON THIS PLEASE MENTION THE TV NORM YOU ARE
USING.
at least for PAL-BG. Other TV norms need other code ...
FOR ANY REPORTS ON THIS PLEASE MENTION THE TV NORM YOU ARE
USING.
- Most tuner chips do provide mono sound, which may or may not
be useable depending on the board design. With the Hauppauge
cards it works, so there is mono sound available as fallback.
@ -65,5 +65,5 @@ Have fun,
Gerd
--
--
Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]

2
Documentation/video4linux/README.saa7134
View file

@ -78,5 +78,5 @@ Have fun,
Gerd
--
--
Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]

18
Documentation/video4linux/bttv/Cards
View file

@ -149,11 +149,11 @@ Lifeview Flyvideo Series:
2) There is a print on the PCB:
LR25 = Flyvideo (Zoran ZR36120, SAA7110A)
LR26 Rev.N = Flyvideo II (Bt848)
Rev.O = Flyvideo II (Bt878)
Rev.O = Flyvideo II (Bt878)
LR37 Rev.C = Flyvideo EZ (Capture only, ZR36120 + SAA7110)
LR38 Rev.A1= Flyvideo II EZ (Bt848 capture only)
LR50 Rev.Q = Flyvideo 98 (w/eeprom and PCI subsystem ID)
Rev.W = Flyvideo 98 (no eeprom)
Rev.W = Flyvideo 98 (no eeprom)
LR51 Rev.E = Flyvideo 98 EZ (capture only)
LR90 = Flyvideo 2000 (Bt878)
Flyvideo 2000S (Bt878) w/Stereo TV (Package incl. LR91 daughterboard)
@ -163,7 +163,7 @@ Lifeview Flyvideo Series:
LR136 = Flyvideo 2100/3100 (Low profile, SAA7130/SAA7134)
LR137 = Flyvideo DV2000/DV3000 (SAA7130/SAA7134 + IEEE1394)
LR138 Rev.C= Flyvideo 2000 (SAA7130)
or Flyvideo 3000 (SAA7134) w/Stereo TV
or Flyvideo 3000 (SAA7134) w/Stereo TV
These exist in variations w/FM and w/Remote sometimes denoted
by suffixes "FM" and "R".
3) You have a laptop (miniPCI card):
@ -197,7 +197,7 @@ Typhoon TV card series:
50680 "TV Tuner Pal BG" (blue package)= Pixelview PV-BT878P+ (Rev 9B)
50681 "TV Tuner PCI Pal I" (variant of 50680)
50682 "TView TV/FM Tuner Pal BG" = Flyvideo 98FM (LR50 Rev.Q)
Note: The package has a picture of CPH05x (which would be a real TView)
Note: The package has a picture of CPH05x (which would be a real TView)
50683 "TV Tuner PCI SECAM" (variant of 50680)
50684 "TV Tuner Pal BG" = Pixelview 878TV(Rev.3D)
50686 "TV Tuner" = KNC1 TV Station
@ -418,9 +418,9 @@ Lifetec/Medion/Tevion/Aldi
--------------------------
LT9306/MD9306 = CPH061
LT9415/MD9415 = LR90 Rev.F or Rev.G
MD9592 = Avermedia TVphone98 (PCI_ID=1461:0003), PCB-Rev=M168II-B (w/TDA9873H)
MD9717 = KNC One (Rev D4, saa7134, FM1216 MK2 tuner)
MD5044 = KNC One (Rev D4, saa7134, FM1216ME MK3 tuner)
MD9592 = Avermedia TVphone98 (PCI_ID=1461:0003), PCB-Rev=M168II-B (w/TDA9873H)
MD9717 = KNC One (Rev D4, saa7134, FM1216 MK2 tuner)
MD5044 = KNC One (Rev D4, saa7134, FM1216ME MK3 tuner)
Modular Technologies (www.modulartech.com) UK
---------------------------------------------
@ -453,10 +453,10 @@ Technisat
Discos ADR PC-Karte ISA (no TV!)
Discos ADR PC-Karte PCI (probably no TV?)
Techni-PC-Sat (Sat. analog)
Rev 1.2 (zr36120, vpx3220, stv0030, saa5246, BSJE3-494A)
Rev 1.2 (zr36120, vpx3220, stv0030, saa5246, BSJE3-494A)
Mediafocus I (zr36120/zr36125, drp3510, Sat. analog + ADR Radio)
Mediafocus II (saa7146, Sat. analog)
SatADR Rev 2.1 (saa7146a, saa7113h, stv0056a, msp3400c, drp3510a, BSKE3-307A)
SatADR Rev 2.1 (saa7146a, saa7113h, stv0056a, msp3400c, drp3510a, BSKE3-307A)
SkyStar 1 DVB (AV7110) = Technotrend Premium
SkyStar 2 DVB (B2C2) (=Sky2PC)

6
Documentation/video4linux/bttv/README
View file

@ -42,9 +42,9 @@ bttv uses the PCI Subsystem ID to autodetect the card type. lspci lists
the Subsystem ID in the second line, looks like this:
00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 02)
Subsystem: Hauppauge computer works Inc. WinTV/GO
Flags: bus master, medium devsel, latency 32, IRQ 5
Memory at e2000000 (32-bit, prefetchable) [size=4K]
Subsystem: Hauppauge computer works Inc. WinTV/GO
Flags: bus master, medium devsel, latency 32, IRQ 5
Memory at e2000000 (32-bit, prefetchable) [size=4K]
only bt878-based cards can have a subsystem ID (which does not mean
that every card really has one). bt848 cards can't have a Subsystem

6
Documentation/video4linux/bttv/README.freeze
View file

@ -27,9 +27,9 @@ information out of a register+stack dump printed by the kernel on
protection faults (so-called "kernel oops").
If you run into some kind of deadlock, you can try to dump a call trace
for each process using sysrq-t (see Documentation/sysrq.txt). ksymoops
will translate these dumps into kernel symbols too. This way it is
possible to figure where *exactly* some process in "D" state is stuck.
for each process using sysrq-t (see Documentation/sysrq.txt).
This way it is possible to figure where *exactly* some process in "D"
state is stuck.
I've seen reports that bttv 0.7.x crashes whereas 0.8.x works rock solid
for some people. Thus probably a small buglet left somewhere in bttv

12
Documentation/video4linux/bttv/Sound-FAQ
View file

@ -61,8 +61,8 @@ line for your board. The important fields are these two:
struct tvcard
{
[ ... ]
u32 gpiomask;
u32 audiomux[6]; /* Tuner, Radio, external, internal, mute, stereo */
u32 gpiomask;
u32 audiomux[6]; /* Tuner, Radio, external, internal, mute, stereo */
};
gpiomask specifies which pins are used to control the audio mux chip.
@ -126,11 +126,11 @@ muxsel - video mux, input->registervalue mapping
pll - same as pll= insmod option
tuner_type - same as tuner= insmod option
*_modulename - hint whenever some card needs this or that audio
module loaded to work properly.
module loaded to work properly.
has_radio - whenever this TV card has a radio tuner.
no_msp34xx - "1" disables loading of msp3400.o module
no_tda9875 - "1" disables loading of tda9875.o module
needs_tvaudio - set to "1" to load tvaudio.o module
no_tda9875 - "1" disables loading of tda9875.o module
needs_tvaudio - set to "1" to load tvaudio.o module
If some config item is specified both from the tvcards array and as
insmod option, the insmod option takes precedence.
@ -144,5 +144,5 @@ Good luck,
PS: If you have a new working entry, mail it to me.
--
--
Gerd Knorr <kraxel@bytesex.org>

4
Documentation/video4linux/bttv/Tuners
View file

@ -21,7 +21,7 @@ SAMSUNG Tuner identification: (e.g. TCPM9091PD27)
J= NTSC-Japan
L= Secam LL
M= BG+I+DK
N= NTSC
N= NTSC
Q= BG+I+DK+LL
[89]: ?
[125]:
@ -96,7 +96,7 @@ LG Innotek Tuner:
TADC-H002F: NTSC (L,175/410?; 2-B, C-W+11, W+12-69)
TADC-M201D: PAL D/K+B/G+I (L,143/425) (sound control at I2C address 0xc8)
TADC-T003F: NTSC Taiwan (L,175/410?; 2-B, C-W+11, W+12-69)
Suffix:
Suffix:
P= Standard phono female socket
D= IEC female socket
F= F-connector

58
Documentation/video4linux/lifeview.txt
View file

@ -10,33 +10,33 @@ bt878:
------------------------------------------------------------------------------
saa7134:
/* LifeView FlyTV Platinum FM (LR214WF) */
/* "Peter Missel <peter.missel@onlinehome.de> */
.name = "LifeView FlyTV Platinum FM",
/* GP27 MDT2005 PB4 pin 10 */
/* GP26 MDT2005 PB3 pin 9 */
/* GP25 MDT2005 PB2 pin 8 */
/* GP23 MDT2005 PB1 pin 7 */
/* GP22 MDT2005 PB0 pin 6 */
/* GP21 MDT2005 PB5 pin 11 */
/* GP20 MDT2005 PB6 pin 12 */
/* GP19 MDT2005 PB7 pin 13 */
/* nc MDT2005 PA3 pin 2 */
/* Remote MDT2005 PA2 pin 1 */
/* GP18 MDT2005 PA1 pin 18 */
/* nc MDT2005 PA0 pin 17 strap low */
/* LifeView FlyTV Platinum FM (LR214WF) */
/* "Peter Missel <peter.missel@onlinehome.de> */
.name = "LifeView FlyTV Platinum FM",
/* GP27 MDT2005 PB4 pin 10 */
/* GP26 MDT2005 PB3 pin 9 */
/* GP25 MDT2005 PB2 pin 8 */
/* GP23 MDT2005 PB1 pin 7 */
/* GP22 MDT2005 PB0 pin 6 */
/* GP21 MDT2005 PB5 pin 11 */
/* GP20 MDT2005 PB6 pin 12 */
/* GP19 MDT2005 PB7 pin 13 */
/* nc MDT2005 PA3 pin 2 */
/* Remote MDT2005 PA2 pin 1 */
/* GP18 MDT2005 PA1 pin 18 */
/* nc MDT2005 PA0 pin 17 strap low */
/* GP17 Strap "GP7"=High */
/* GP16 Strap "GP6"=High
0=Radio 1=TV
Drives SA630D ENCH1 and HEF4052 A1 pins
to do FM radio through SIF input */
/* GP15 nc */
/* GP14 nc */
/* GP13 nc */
/* GP12 Strap "GP5" = High */
/* GP11 Strap "GP4" = High */
/* GP10 Strap "GP3" = High */
/* GP09 Strap "GP2" = Low */
/* GP08 Strap "GP1" = Low */
/* GP07.00 nc */
/* GP17 Strap "GP7"=High */
/* GP16 Strap "GP6"=High
0=Radio 1=TV
Drives SA630D ENCH1 and HEF4052 A1 pins
to do FM radio through SIF input */
/* GP15 nc */
/* GP14 nc */
/* GP13 nc */
/* GP12 Strap "GP5" = High */
/* GP11 Strap "GP4" = High */
/* GP10 Strap "GP3" = High */
/* GP09 Strap "GP2" = Low */
/* GP08 Strap "GP1" = Low */
/* GP07.00 nc */

25
Documentation/vm/hugetlbpage.txt
View file

@ -13,12 +13,13 @@ This optimization is more critical now as bigger and bigger physical memories
Users can use the huge page support in Linux kernel by either using the mmap
system call or standard SYSv shared memory system calls (shmget, shmat).
First the Linux kernel needs to be built with CONFIG_HUGETLB_PAGE (present
under Processor types and feature) and CONFIG_HUGETLBFS (present under file
system option on config menu) config options.
First the Linux kernel needs to be built with the CONFIG_HUGETLBFS
(present under "File systems") and CONFIG_HUGETLB_PAGE (selected
automatically when CONFIG_HUGETLBFS is selected) configuration
options.
The kernel built with hugepage support should show the number of configured
hugepages in the system by running the "cat /proc/meminfo" command.
hugepages in the system by running the "cat /proc/meminfo" command.
/proc/meminfo also provides information about the total number of hugetlb
pages configured in the kernel. It also displays information about the
@ -38,19 +39,19 @@ in the kernel.
/proc/sys/vm/nr_hugepages indicates the current number of configured hugetlb
pages in the kernel. Super user can dynamically request more (or free some
pre-configured) hugepages.
The allocation( or deallocation) of hugetlb pages is posible only if there are
pre-configured) hugepages.
The allocation (or deallocation) of hugetlb pages is possible only if there are
enough physically contiguous free pages in system (freeing of hugepages is
possible only if there are enough hugetlb pages free that can be transfered
possible only if there are enough hugetlb pages free that can be transfered
back to regular memory pool).
Pages that are used as hugetlb pages are reserved inside the kernel and can
not be used for other purposes.
not be used for other purposes.
Once the kernel with Hugetlb page support is built and running, a user can
use either the mmap system call or shared memory system calls to start using
the huge pages. It is required that the system administrator preallocate
enough memory for huge page purposes.
enough memory for huge page purposes.
Use the following command to dynamically allocate/deallocate hugepages:
@ -80,9 +81,9 @@ memory (huge pages) allowed for that filesystem (/mnt/huge). The size is
rounded down to HPAGE_SIZE. The option nr_inode sets the maximum number of
inodes that /mnt/huge can use. If the size or nr_inode options are not
provided on command line then no limits are set. For size and nr_inodes
options, you can use [G|g]/[M|m]/[K|k] to represent giga/mega/kilo. For
example, size=2K has the same meaning as size=2048. An example is given at
the end of this document.
options, you can use [G|g]/[M|m]/[K|k] to represent giga/mega/kilo. For
example, size=2K has the same meaning as size=2048. An example is given at
the end of this document.
read and write system calls are not supported on files that reside on hugetlb
file systems.

57
MAINTAINERS
View file

@ -297,6 +297,11 @@ P: Richard Purdie
M: rpurdie@rpsys.net
S: Maintained
ARM/TOSA MACHINE SUPPORT
P: Dirk Opfer
M: dirk@opfer-online.de
S: Maintained
ARM/PLEB SUPPORT
P: Peter Chubb
M: pleb@gelato.unsw.edu.au
@ -702,7 +707,7 @@ DCCP PROTOCOL
P: Arnaldo Carvalho de Melo
M: acme@mandriva.com
L: dccp@vger.kernel.org
W: http://www.wlug.org.nz/DCCP
W: http://linux-net.osdl.org/index.php/DCCP
S: Maintained
DECnet NETWORK LAYER
@ -1072,6 +1077,26 @@ P: Jaroslav Kysela
M: perex@suse.cz
S: Maintained
HPET: High Precision Event Timers driver (hpet.c)
P: Clemens Ladisch
M: clemens@ladisch.de
S: Maintained
HPET: i386
P: Venkatesh Pallipadi (Venki)
M: venkatesh.pallipadi@intel.com
S: Maintained
HPET: x86_64
P: Andi Kleen and Vojtech Pavlik
M: ak@muc.de and vojtech@suse.cz
S: Maintained
HPET: ACPI hpet.c
P: Bob Picco
M: bob.picco@hp.com
S: Maintained
HPFS FILESYSTEM
P: Mikulas Patocka
M: mikulas@artax.karlin.mff.cuni.cz
@ -1305,6 +1330,24 @@ M: john.ronciak@intel.com
W: http://sourceforge.net/projects/e1000/
S: Supported
INTEL PRO/WIRELESS 2100 NETWORK CONNECTION SUPPORT
P: Yi Zhu
M: yi.zhu@intel.com
P: James Ketrenos
M: jketreno@linux.intel.com
L: http://lists.sourceforge.net/mailman/listinfo/ipw2100-devel
W: http://ipw2100.sourceforge.net
S: Supported
INTEL PRO/WIRELESS 2915ABG NETWORK CONNECTION SUPPORT
P: Yi Zhu
M: yi.zhu@intel.com
P: James Ketrenos
M: jketreno@linux.intel.com
L: http://lists.sourceforge.net/mailman/listinfo/ipw2100-devel
W: http://ipw2200.sourceforge.net
S: Supported
IOC3 DRIVER
P: Ralf Baechle
M: ralf@linux-mips.org
@ -2046,6 +2089,12 @@ P: Matt Mackall
M: mpm@selenic.com
S: Maintained
RAPIDIO SUBSYSTEM
P: Matt Porter
M: mporter@kernel.crashing.org
L: linux-kernel@vger.kernel.org
S: Maintained
REAL TIME CLOCK DRIVER
P: Paul Gortmaker
M: p_gortmaker@yahoo.com
@ -2450,10 +2499,10 @@ L: linux-kernel@vger.kernel.org
S: Maintained
TRIVIAL PATCHES
P: Rusty Russell
M: trivial@rustcorp.com.au
P: Adrian Bunk
M: trivial@kernel.org
L: linux-kernel@vger.kernel.org
W: http://www.kernel.org/pub/linux/kernel/people/rusty/trivial/
W: http://www.kernel.org/pub/linux/kernel/people/bunk/trivial/
S: Maintained
TMS380 TOKEN-RING NETWORK DRIVER

12
Makefile
View file

@ -346,7 +346,8 @@ AFLAGS_KERNEL =
# Use LINUXINCLUDE when you must reference the include/ directory.
# Needed to be compatible with the O= option
LINUXINCLUDE := -Iinclude \
$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)
$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
-include include/linux/autoconf.h
CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
@ -406,7 +407,7 @@ outputmakefile:
# of make so .config is not included in this case either (for *config).
no-dot-config-targets := clean mrproper distclean \
cscope TAGS tags help %docs check%
cscope TAGS tags help %docs check% kernelrelease
config-targets := 0
mixed-targets := 0
@ -582,7 +583,7 @@ export MODLIB
ifeq ($(KBUILD_EXTMOD),)
core-y += kernel/ mm/ fs/ ipc/ security/ crypto/
core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
$(core-y) $(core-m) $(drivers-y) $(drivers-m) \
@ -1249,11 +1250,6 @@ tags: FORCE
# Scripts to check various things for consistency
# ---------------------------------------------------------------------------
configcheck:
find * $(RCS_FIND_IGNORE) \
-name '*.[hcS]' -type f -print | sort \
| xargs $(PERL) -w scripts/checkconfig.pl
includecheck:
find * $(RCS_FIND_IGNORE) \
-name '*.[hcS]' -type f -print | sort \

10
arch/alpha/kernel/process.c
View file

@ -43,21 +43,17 @@
#include "proto.h"
#include "pci_impl.h"
void default_idle(void)
{
barrier();
}
void
cpu_idle(void)
{
set_thread_flag(TIF_POLLING_NRFLAG);
while (1) {
void (*idle)(void) = default_idle;
/* FIXME -- EV6 and LCA45 know how to power down
the CPU. */
while (!need_resched())
idle();
cpu_relax();
schedule();
}
}

16
arch/arm/Kconfig
View file

@ -239,6 +239,8 @@ source "arch/arm/plat-omap/Kconfig"
source "arch/arm/mach-omap1/Kconfig"
source "arch/arm/mach-omap2/Kconfig"
source "arch/arm/mach-s3c2410/Kconfig"
source "arch/arm/mach-lh7a40x/Kconfig"
@ -324,7 +326,7 @@ menu "Kernel Features"
config SMP
bool "Symmetric Multi-Processing (EXPERIMENTAL)"
depends on EXPERIMENTAL && BROKEN #&& n
depends on EXPERIMENTAL && REALVIEW_MPCORE
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If
@ -356,6 +358,16 @@ config HOTPLUG_CPU
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.
config LOCAL_TIMERS
bool "Use local timer interrupts"
depends on SMP && REALVIEW_MPCORE
default y
help
Enable support for local timers on SMP platforms, rather then the
legacy IPI broadcast method. Local timers allows the system
accounting to be spread across the timer interval, preventing a
"thundering herd" at every timer tick.
config PREEMPT
bool "Preemptible Kernel (EXPERIMENTAL)"
depends on EXPERIMENTAL
@ -585,7 +597,7 @@ config FPE_NWFPE
config FPE_NWFPE_XP
bool "Support extended precision"
depends on FPE_NWFPE && !CPU_BIG_ENDIAN
depends on FPE_NWFPE
help
Say Y to include 80-bit support in the kernel floating-point
emulator. Otherwise, only 32 and 64-bit support is compiled in.

1
arch/arm/Makefile
View file

@ -93,6 +93,7 @@ textaddr-$(CONFIG_ARCH_FORTUNET) := 0xc0008000
machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx
machine-$(CONFIG_ARCH_IXP2000) := ixp2000
machine-$(CONFIG_ARCH_OMAP1) := omap1
machine-$(CONFIG_ARCH_OMAP2) := omap2
incdir-$(CONFIG_ARCH_OMAP) := omap
machine-$(CONFIG_ARCH_S3C2410) := s3c2410
machine-$(CONFIG_ARCH_LH7A40X) := lh7a40x

6
arch/arm/boot/compressed/misc.c
View file

@ -283,8 +283,14 @@ void flush_window(void)
putstr(".");
}
#ifndef arch_error
#define arch_error(x)
#endif
static void error(char *x)
{
arch_error(x);
putstr("\n\n");
putstr(x);
putstr("\n\n -- System halted");

6
arch/arm/common/scoop.c
View file

@ -19,12 +19,6 @@
#define SCOOP_REG(d,adr) (*(volatile unsigned short*)(d +(adr)))
/* PCMCIA to Scoop linkage structures for pxa2xx_sharpsl.c
There is no easy way to link multiple scoop devices into one
single entity for the pxa2xx_pcmcia device */
int scoop_num;
struct scoop_pcmcia_dev *scoop_devs;
struct scoop_dev {
void *base;
spinlock_t scoop_lock;

97
arch/arm/configs/omap_h2_1610_defconfig
View file

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.13
# Mon Sep 5 18:07:12 2005
# Linux kernel version: 2.6.14
# Wed Nov 9 18:53:40 2005
#
CONFIG_ARM=y
CONFIG_MMU=y
@ -22,6 +22,7 @@ CONFIG_INIT_ENV_ARG_LIMIT=32
# General setup
#
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
# CONFIG_POSIX_MQUEUE is not set
@ -31,6 +32,7 @@ CONFIG_SYSCTL=y
# CONFIG_HOTPLUG is not set
CONFIG_KOBJECT_UEVENT=y
# CONFIG_IKCONFIG is not set
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_EMBEDDED is not set
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
@ -59,6 +61,23 @@ CONFIG_OBSOLETE_MODPARM=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_KMOD is not set
#
# Block layer
#
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_DEFAULT_AS=y
# CONFIG_DEFAULT_DEADLINE is not set
# CONFIG_DEFAULT_CFQ is not set
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="anticipatory"
#
# System Type
#
@ -81,6 +100,7 @@ CONFIG_OBSOLETE_MODPARM=y
# CONFIG_ARCH_LH7A40X is not set
CONFIG_ARCH_OMAP=y
# CONFIG_ARCH_VERSATILE is not set
# CONFIG_ARCH_REALVIEW is not set
# CONFIG_ARCH_IMX is not set
# CONFIG_ARCH_H720X is not set
# CONFIG_ARCH_AAEC2000 is not set
@ -112,7 +132,7 @@ CONFIG_OMAP_SERIAL_WAKE=y
# OMAP Core Type
#
# CONFIG_ARCH_OMAP730 is not set
# CONFIG_ARCH_OMAP1510 is not set
# CONFIG_ARCH_OMAP15XX is not set
CONFIG_ARCH_OMAP16XX=y
#
@ -177,6 +197,8 @@ CONFIG_FLATMEM_MANUAL=y
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
# CONFIG_SPARSEMEM_STATIC is not set
CONFIG_SPLIT_PTLOCK_CPUS=4096
# CONFIG_LEDS is not set
CONFIG_ALIGNMENT_TRAP=y
@ -258,13 +280,18 @@ CONFIG_IP_PNP_BOOTP=y
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_TUNNEL is not set
CONFIG_IP_TCPDIAG=y
# CONFIG_IP_TCPDIAG_IPV6 is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_BIC=y
# CONFIG_IPV6 is not set
# CONFIG_NETFILTER is not set
#
# DCCP Configuration (EXPERIMENTAL)
#
# CONFIG_IP_DCCP is not set
#
# SCTP Configuration (EXPERIMENTAL)
#
@ -281,6 +308,10 @@ CONFIG_TCP_CONG_BIC=y
# CONFIG_NET_DIVERT is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
#
# QoS and/or fair queueing
#
# CONFIG_NET_SCHED is not set
# CONFIG_NET_CLS_ROUTE is not set
@ -291,6 +322,7 @@ CONFIG_TCP_CONG_BIC=y
# CONFIG_HAMRADIO is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_IEEE80211 is not set
#
# Device Drivers
@ -328,21 +360,13 @@ CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_CDROM_PKTCDVD is not set
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_ATA_OVER_ETH=m
#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_PROC_FS=y
@ -369,10 +393,12 @@ CONFIG_SCSI_PROC_FS=y
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
#
# SCSI low-level drivers
#
# CONFIG_ISCSI_TCP is not set
# CONFIG_SCSI_SATA is not set
# CONFIG_SCSI_DEBUG is not set
@ -403,6 +429,11 @@ CONFIG_NETDEVICES=y
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
#
# PHY device support
#
# CONFIG_PHYLIB is not set
#
# Ethernet (10 or 100Mbit)
#
@ -439,6 +470,7 @@ CONFIG_PPP=y
# CONFIG_PPP_SYNC_TTY is not set
# CONFIG_PPP_DEFLATE is not set
# CONFIG_PPP_BSDCOMP is not set
# CONFIG_PPP_MPPE is not set
# CONFIG_PPPOE is not set
CONFIG_SLIP=y
CONFIG_SLIP_COMPRESSED=y
@ -541,24 +573,28 @@ CONFIG_WATCHDOG_NOWAYOUT=y
#
# TPM devices
#
# CONFIG_TELCLOCK is not set
#
# I2C support
#
# CONFIG_I2C is not set
# CONFIG_I2C_SENSOR is not set
CONFIG_ISP1301_OMAP=y
#
# Hardware Monitoring support
#
CONFIG_HWMON=y
# CONFIG_HWMON_VID is not set
# CONFIG_HWMON_DEBUG_CHIP is not set
#
# Misc devices
#
#
# Multimedia Capabilities Port drivers
#
#
# Multimedia devices
#
@ -576,7 +612,6 @@ CONFIG_FB=y
# CONFIG_FB_CFB_FILLRECT is not set
# CONFIG_FB_CFB_COPYAREA is not set
# CONFIG_FB_CFB_IMAGEBLIT is not set
# CONFIG_FB_SOFT_CURSOR is not set
# CONFIG_FB_MACMODES is not set
CONFIG_FB_MODE_HELPERS=y
# CONFIG_FB_TILEBLITTING is not set
@ -589,6 +624,7 @@ CONFIG_FB_MODE_HELPERS=y
# CONFIG_VGA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
CONFIG_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
@ -600,6 +636,7 @@ CONFIG_FONT_8x16=y
# CONFIG_FONT_SUN8x16 is not set
# CONFIG_FONT_SUN12x22 is not set
# CONFIG_FONT_10x18 is not set
# CONFIG_FONT_RL is not set
#
# Logo configuration
@ -624,10 +661,10 @@ CONFIG_SOUND=y
# Open Sound System
#
CONFIG_SOUND_PRIME=y
# CONFIG_OBSOLETE_OSS_DRIVER is not set
# CONFIG_SOUND_MSNDCLAS is not set
# CONFIG_SOUND_MSNDPIN is not set
# CONFIG_SOUND_OSS is not set
# CONFIG_SOUND_AD1980 is not set
#
# USB support
@ -636,23 +673,22 @@ CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
# CONFIG_USB is not set
#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
#
#
# USB Gadget Support
#
CONFIG_USB_GADGET=y
# CONFIG_USB_GADGET_DEBUG_FILES is not set
CONFIG_USB_GADGET_SELECTED=y
# CONFIG_USB_GADGET is not set
# CONFIG_USB_GADGET_NET2280 is not set
# CONFIG_USB_GADGET_PXA2XX is not set
# CONFIG_USB_GADGET_GOKU is not set
# CONFIG_USB_GADGET_LH7A40X is not set
CONFIG_USB_GADGET_OMAP=y
CONFIG_USB_OMAP=y
# CONFIG_USB_GADGET_OMAP is not set
# CONFIG_USB_GADGET_DUMMY_HCD is not set
# CONFIG_USB_GADGET_DUALSPEED is not set
# CONFIG_USB_ZERO is not set
CONFIG_USB_ETH=y
CONFIG_USB_ETH_RNDIS=y
# CONFIG_USB_ETH is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FILE_STORAGE is not set
# CONFIG_USB_G_SERIAL is not set
@ -673,10 +709,6 @@ CONFIG_EXT2_FS=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
#
# XFS support
#
# CONFIG_XFS_FS is not set
# CONFIG_MINIX_FS is not set
CONFIG_ROMFS_FS=y
@ -685,6 +717,7 @@ CONFIG_INOTIFY=y
CONFIG_DNOTIFY=y
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
#
# CD-ROM/DVD Filesystems
@ -706,10 +739,10 @@ CONFIG_FAT_DEFAULT_CODEPAGE=437
#
CONFIG_PROC_FS=y
CONFIG_SYSFS=y
# CONFIG_DEVPTS_FS_XATTR is not set
# CONFIG_TMPFS is not set
# CONFIG_HUGETLB_PAGE is not set
CONFIG_RAMFS=y
# CONFIG_RELAYFS_FS is not set
#
# Miscellaneous filesystems
@ -750,6 +783,7 @@ CONFIG_RPCSEC_GSS_KRB5=y
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
# CONFIG_9P_FS is not set
#
# Partition Types
@ -859,6 +893,7 @@ CONFIG_CRYPTO_DES=y
# Library routines
#
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
CONFIG_CRC32=y
# CONFIG_LIBCRC32C is not set
CONFIG_ZLIB_INFLATE=y

4
arch/arm/kernel/armksyms.c
View file

@ -9,6 +9,7 @@
*/
#include <linux/module.h>
#include <linux/string.h>
#include <linux/cryptohash.h>
#include <linux/delay.h>
#include <linux/in6.h>
#include <linux/syscalls.h>
@ -126,6 +127,9 @@ EXPORT_SYMBOL(__put_user_2);
EXPORT_SYMBOL(__put_user_4);
EXPORT_SYMBOL(__put_user_8);
/* crypto hash */
EXPORT_SYMBOL(sha_transform);
/* gcc lib functions */
EXPORT_SYMBOL(__ashldi3);
EXPORT_SYMBOL(__ashrdi3);

22
arch/arm/kernel/entry-armv.S
View file

@ -47,6 +47,13 @@
movne r0, sp
adrne lr, 1b
bne do_IPI
#ifdef CONFIG_LOCAL_TIMERS
test_for_ltirq r0, r6, r5, lr
movne r0, sp
adrne lr, 1b
bne do_local_timer
#endif
#endif
.endm
@ -785,7 +792,7 @@ __kuser_helper_end:
* SP points to a minimal amount of processor-private memory, the address
* of which is copied into r0 for the mode specific abort handler.
*/
.macro vector_stub, name, correction=0
.macro vector_stub, name, mode, correction=0
.align 5
vector_\name:
@ -805,15 +812,14 @@ vector_\name:
@ Prepare for SVC32 mode. IRQs remain disabled.
@
mrs r0, cpsr
bic r0, r0, #MODE_MASK
orr r0, r0, #SVC_MODE
eor r0, r0, #(\mode ^ SVC_MODE)
msr spsr_cxsf, r0
@
@ the branch table must immediately follow this code
@
mov r0, sp
and lr, lr, #0x0f
mov r0, sp
ldr lr, [pc, lr, lsl #2]
movs pc, lr @ branch to handler in SVC mode
.endm
@ -823,7 +829,7 @@ __stubs_start:
/*
* Interrupt dispatcher
*/
vector_stub irq, 4
vector_stub irq, IRQ_MODE, 4
.long __irq_usr @ 0 (USR_26 / USR_32)
.long __irq_invalid @ 1 (FIQ_26 / FIQ_32)
@ -846,7 +852,7 @@ __stubs_start:
* Data abort dispatcher
* Enter in ABT mode, spsr = USR CPSR, lr = USR PC
*/
vector_stub dabt, 8
vector_stub dabt, ABT_MODE, 8
.long __dabt_usr @ 0 (USR_26 / USR_32)
.long __dabt_invalid @ 1 (FIQ_26 / FIQ_32)
@ -869,7 +875,7 @@ __stubs_start:
* Prefetch abort dispatcher
* Enter in ABT mode, spsr = USR CPSR, lr = USR PC
*/
vector_stub pabt, 4
vector_stub pabt, ABT_MODE, 4
.long __pabt_usr @ 0 (USR_26 / USR_32)
.long __pabt_invalid @ 1 (FIQ_26 / FIQ_32)
@ -892,7 +898,7 @@ __stubs_start:
* Undef instr entry dispatcher
* Enter in UND mode, spsr = SVC/USR CPSR, lr = SVC/USR PC
*/
vector_stub und
vector_stub und, UND_MODE
.long __und_usr @ 0 (USR_26 / USR_32)
.long __und_invalid @ 1 (FIQ_26 / FIQ_32)

3
arch/arm/kernel/irq.c
View file

@ -264,6 +264,7 @@ unlock:
#endif
#ifdef CONFIG_SMP
show_ipi_list(p);
show_local_irqs(p);
#endif
seq_printf(p, "Err: %10lu\n", irq_err_count);
}
@ -995,7 +996,7 @@ void __init init_irq_proc(void)
struct proc_dir_entry *dir;
int irq;
dir = proc_mkdir("irq", 0);
dir = proc_mkdir("irq", NULL);
if (!dir)
return;

20
arch/arm/kernel/process.c
View file

@ -86,12 +86,16 @@ EXPORT_SYMBOL(pm_power_off);
*/
void default_idle(void)
{
local_irq_disable();
if (!need_resched() && !hlt_counter) {
timer_dyn_reprogram();
arch_idle();
if (hlt_counter)
cpu_relax();
else {
local_irq_disable();
if (!need_resched()) {
timer_dyn_reprogram();
arch_idle();
}
local_irq_enable();
}
local_irq_enable();
}
/*
@ -116,13 +120,13 @@ void cpu_idle(void)
if (!idle)
idle = default_idle;
preempt_disable();
leds_event(led_idle_start);
while (!need_resched())
idle();
leds_event(led_idle_end);
preempt_enable();
preempt_enable_no_resched();
schedule();
preempt_disable();
}
}
@ -355,7 +359,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start,
struct thread_info *thread = p->thread_info;
struct pt_regs *childregs;
childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_START_SP)) - 1;
childregs = (void *)thread + THREAD_START_SP - sizeof(*regs);
*childregs = *regs;
childregs->ARM_r0 = 0;
childregs->ARM_sp = stack_start;

49
arch/arm/kernel/ptrace.c
View file

@ -648,7 +648,7 @@ static int ptrace_setwmmxregs(struct task_struct *tsk, void __user *ufp)
#endif
static int do_ptrace(int request, struct task_struct *child, long addr, long data)
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
unsigned long tmp;
int ret;
@ -782,53 +782,6 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
return ret;
}
asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
{
struct task_struct *child;
int ret;
lock_kernel();
ret = -EPERM;
if (request == PTRACE_TRACEME) {
/* are we already being traced? */
if (current->ptrace & PT_PTRACED)
goto out;
ret = security_ptrace(current->parent, current);
if (ret)
goto out;
/* set the ptrace bit in the process flags. */
current->ptrace |= PT_PTRACED;
ret = 0;
goto out;
}
ret = -ESRCH;
read_lock(&tasklist_lock);
child = find_task_by_pid(pid);
if (child)
get_task_struct(child);
read_unlock(&tasklist_lock);
if (!child)
goto out;
ret = -EPERM;
if (pid == 1) /* you may not mess with init */
goto out_tsk;
if (request == PTRACE_ATTACH) {
ret = ptrace_attach(child);
goto out_tsk;
}
ret = ptrace_check_attach(child, request == PTRACE_KILL);
if (ret == 0)
ret = do_ptrace(request, child, addr, data);
out_tsk:
put_task_struct(child);
out:
unlock_kernel();
return ret;
}
asmlinkage void syscall_trace(int why, struct pt_regs *regs)
{
unsigned long ip;

10
arch/arm/kernel/setup.c
View file

@ -338,7 +338,8 @@ void cpu_init(void)
BUG();
}
dump_cpu_info(cpu);
if (system_state == SYSTEM_BOOTING)
dump_cpu_info(cpu);
/*
* setup stacks for re-entrant exception handlers
@ -838,7 +839,12 @@ static int c_show(struct seq_file *m, void *v)
#if defined(CONFIG_SMP)
for_each_online_cpu(i) {
seq_printf(m, "Processor\t: %d\n", i);
/*
* glibc reads /proc/cpuinfo to determine the number of
* online processors, looking for lines beginning with
* "processor". Give glibc what it expects.
*/
seq_printf(m, "processor\t: %d\n", i);
seq_printf(m, "BogoMIPS\t: %lu.%02lu\n\n",
per_cpu(cpu_data, i).loops_per_jiffy / (500000UL/HZ),
(per_cpu(cpu_data, i).loops_per_jiffy / (5000UL/HZ)) % 100);

47
arch/arm/kernel/smp.c
View file

@ -142,7 +142,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
ret = -EIO;
}
secondary_data.stack = 0;
secondary_data.stack = NULL;
secondary_data.pgdir = 0;
*pmd_offset(pgd, PHYS_OFFSET) = __pmd(0);
@ -184,6 +184,11 @@ int __cpuexit __cpu_disable(void)
*/
migrate_irqs();
/*
* Stop the local timer for this CPU.
*/
local_timer_stop(cpu);
/*
* Flush user cache and TLB mappings, and then remove this CPU
* from the vm mask set of all processes.
@ -251,7 +256,9 @@ void __cpuexit cpu_die(void)
asmlinkage void __cpuinit secondary_start_kernel(void)
{
struct mm_struct *mm = &init_mm;
unsigned int cpu = smp_processor_id();
unsigned int cpu;
cpu = smp_processor_id();
printk("CPU%u: Booted secondary processor\n", cpu);
@ -268,6 +275,7 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
local_flush_tlb_all();
cpu_init();
preempt_disable();
/*
* Give the platform a chance to do its own initialisation.
@ -289,6 +297,11 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
*/
cpu_set(cpu, cpu_online_map);
/*
* Setup local timer for this CPU.
*/
local_timer_setup(cpu);
/*
* OK, it's off to the idle thread for us
*/
@ -359,8 +372,8 @@ static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg)
* You must not call this function with disabled interrupts, from a
* hardware interrupt handler, nor from a bottom half handler.
*/
int smp_call_function_on_cpu(void (*func)(void *info), void *info, int retry,
int wait, cpumask_t callmap)
static int smp_call_function_on_cpu(void (*func)(void *info), void *info,
int retry, int wait, cpumask_t callmap)
{
struct smp_call_struct data;
unsigned long timeout;
@ -454,6 +467,18 @@ void show_ipi_list(struct seq_file *p)
seq_putc(p, '\n');
}
void show_local_irqs(struct seq_file *p)
{
unsigned int cpu;
seq_printf(p, "LOC: ");
for_each_present_cpu(cpu)
seq_printf(p, "%10u ", irq_stat[cpu].local_timer_irqs);
seq_putc(p, '\n');
}
static void ipi_timer(struct pt_regs *regs)
{
int user = user_mode(regs);
@ -464,6 +489,18 @@ static void ipi_timer(struct pt_regs *regs)
irq_exit();
}
#ifdef CONFIG_LOCAL_TIMERS
asmlinkage void do_local_timer(struct pt_regs *regs)
{
int cpu = smp_processor_id();
if (local_timer_ack()) {
irq_stat[cpu].local_timer_irqs++;
ipi_timer(regs);
}
}
#endif
/*
* ipi_call_function - handle IPI from smp_call_function()
*
@ -515,7 +552,7 @@ static void ipi_cpu_stop(unsigned int cpu)
*
* Bit 0 - Inter-processor function call
*/
void do_IPI(struct pt_regs *regs)
asmlinkage void do_IPI(struct pt_regs *regs)
{
unsigned int cpu = smp_processor_id();
struct ipi_data *ipi = &per_cpu(ipi_data, cpu);

4
arch/arm/lib/bitops.h
View file

@ -34,7 +34,7 @@
and r2, r0, #7
mov r3, #1
mov r3, r3, lsl r2
save_and_disable_irqs ip, r2
save_and_disable_irqs ip
ldrb r2, [r1, r0, lsr #3]
\instr r2, r2, r3
strb r2, [r1, r0, lsr #3]
@ -54,7 +54,7 @@
add r1, r1, r0, lsr #3
and r3, r0, #7
mov r0, #1
save_and_disable_irqs ip, r2
save_and_disable_irqs ip
ldrb r2, [r1]
tst r2, r0, lsl r3
\instr r2, r2, r0, lsl r3

4
arch/arm/lib/csumpartial.S
View file

@ -39,6 +39,7 @@ td3 .req lr
/* we must have at least one byte. */
tst buf, #1 @ odd address?
movne sum, sum, ror #8
ldrneb td0, [buf], #1
subne len, len, #1
adcnes sum, sum, td0, put_byte_1
@ -103,6 +104,9 @@ ENTRY(csum_partial)
cmp len, #8 @ Ensure that we have at least
blo .less8 @ 8 bytes to copy.
tst buf, #1
movne sum, sum, ror #8
adds sum, sum, #0 @ C = 0
tst buf, #3 @ Test destination alignment
blne .not_aligned @ aligh destination, return here

1
arch/arm/mach-aaec2000/clock.c
View file

@ -14,6 +14,7 @@
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/string.h>
#include <asm/semaphore.h>
#include <asm/hardware/clock.h>

1
arch/arm/mach-epxa10db/mm.c
View file

@ -25,6 +25,7 @@
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/sizes.h>
#include <asm/page.h>
#include <asm/mach/map.h>

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

@ -420,8 +420,7 @@ static int impd1_probe(struct lm_device *dev)
free_impd1:
if (impd1 && impd1->base)
iounmap(impd1->base);
if (impd1)
kfree(impd1);
kfree(impd1);
release_lm:
release_mem_region(dev->resource.start, SZ_4K);
return ret;

35
arch/arm/mach-ixp2000/core.c
View file

@ -84,63 +84,54 @@ static struct map_desc ixp2000_io_desc[] __initdata = {
.virtual = IXP2000_CAP_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_CAP_PHYS_BASE),
.length = IXP2000_CAP_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_INTCTL_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_INTCTL_PHYS_BASE),
.length = IXP2000_INTCTL_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CREG_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CREG_PHYS_BASE),
.length = IXP2000_PCI_CREG_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CSR_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CSR_PHYS_BASE),
.length = IXP2000_PCI_CSR_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_MSF_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_MSF_PHYS_BASE),
.length = IXP2000_MSF_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_IO_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_IO_PHYS_BASE),
.length = IXP2000_PCI_IO_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CFG0_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CFG0_PHYS_BASE),
.length = IXP2000_PCI_CFG0_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}, {
.virtual = IXP2000_PCI_CFG1_VIRT_BASE,
.pfn = __phys_to_pfn(IXP2000_PCI_CFG1_PHYS_BASE),
.length = IXP2000_PCI_CFG1_SIZE,
.type = MT_DEVICE
.type = MT_IXP2000_DEVICE,
}
};
void __init ixp2000_map_io(void)
{
extern unsigned int processor_id;
/*
* On IXP2400 CPUs we need to use MT_IXP2000_DEVICE for
* tweaking the PMDs so XCB=101. On IXP2800s we use the normal
* PMD flags.
* On IXP2400 CPUs we need to use MT_IXP2000_DEVICE so that
* XCB=101 (to avoid triggering erratum #66), and given that
* this mode speeds up I/O accesses and we have write buffer
* flushes in the right places anyway, it doesn't hurt to use
* XCB=101 for all IXP2000s.
*/
if ((processor_id & 0xfffffff0) == 0x69054190) {
int i;
printk(KERN_INFO "Enabling IXP2400 erratum #66 workaround\n");
for(i=0;i<ARRAY_SIZE(ixp2000_io_desc);i++)
ixp2000_io_desc[i].type = MT_IXP2000_DEVICE;
}
iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc));
/* Set slowport to 8-bit mode. */

11
arch/arm/mach-ixp2000/uengine.c
View file

@ -91,8 +91,8 @@ EXPORT_SYMBOL(ixp2000_uengine_csr_write);
void ixp2000_uengine_reset(u32 uengine_mask)
{
ixp2000_reg_write(IXP2000_RESET1, uengine_mask & ixp2000_uengine_mask);
ixp2000_reg_write(IXP2000_RESET1, 0);
ixp2000_reg_wrb(IXP2000_RESET1, uengine_mask & ixp2000_uengine_mask);
ixp2000_reg_wrb(IXP2000_RESET1, 0);
}
EXPORT_SYMBOL(ixp2000_uengine_reset);
@ -452,21 +452,20 @@ static int __init ixp2000_uengine_init(void)
/*
* Reset microengines.
*/
ixp2000_reg_write(IXP2000_RESET1, ixp2000_uengine_mask);
ixp2000_reg_write(IXP2000_RESET1, 0);
ixp2000_uengine_reset(ixp2000_uengine_mask);
/*
* Synchronise timestamp counters across all microengines.
*/
value = ixp2000_reg_read(IXP2000_MISC_CONTROL);
ixp2000_reg_write(IXP2000_MISC_CONTROL, value & ~0x80);
ixp2000_reg_wrb(IXP2000_MISC_CONTROL, value & ~0x80);
for (uengine = 0; uengine < 32; uengine++) {
if (ixp2000_uengine_mask & (1 << uengine)) {
ixp2000_uengine_csr_write(uengine, TIMESTAMP_LOW, 0);
ixp2000_uengine_csr_write(uengine, TIMESTAMP_HIGH, 0);
}
}
ixp2000_reg_write(IXP2000_MISC_CONTROL, value | 0x80);
ixp2000_reg_wrb(IXP2000_MISC_CONTROL, value | 0x80);
return 0;
}

10
arch/arm/mach-ixp4xx/Kconfig
View file

@ -8,6 +8,16 @@ menu "Intel IXP4xx Implementation Options"
comment "IXP4xx Platforms"
# This entry is placed on top because otherwise it would have
# been shown as a submenu.
config MACH_NSLU2
bool
prompt "NSLU2" if !(MACH_IXDP465 || MACH_IXDPG425 || ARCH_IXDP425 || ARCH_ADI_COYOTE || ARCH_AVILA || ARCH_IXCDP1100 || ARCH_PRPMC1100 || MACH_GTWX5715)
help
Say 'Y' here if you want your kernel to support Linksys's
NSLU2 NAS device. For more information on this platform,
see http://www.nslu2-linux.org
config ARCH_AVILA
bool "Avila"
help

1
arch/arm/mach-ixp4xx/Makefile
View file

@ -8,4 +8,5 @@ obj-$(CONFIG_ARCH_IXDP4XX) += ixdp425-pci.o ixdp425-setup.o
obj-$(CONFIG_MACH_IXDPG425) += ixdpg425-pci.o coyote-setup.o
obj-$(CONFIG_ARCH_ADI_COYOTE) += coyote-pci.o coyote-setup.o
obj-$(CONFIG_MACH_GTWX5715) += gtwx5715-pci.o gtwx5715-setup.o
obj-$(CONFIG_MACH_NSLU2) += nslu2-pci.o nslu2-setup.o nslu2-power.o

2
arch/arm/mach-ixp4xx/common-pci.c
View file

@ -427,7 +427,7 @@ void __init ixp4xx_pci_preinit(void)
#ifdef __ARMEB__
*PCI_CSR = PCI_CSR_IC | PCI_CSR_ABE | PCI_CSR_PDS | PCI_CSR_ADS;
#else
*PCI_CSR = PCI_CSR_IC;
*PCI_CSR = PCI_CSR_IC | PCI_CSR_ABE;
#endif
pr_debug("DONE\n");

77
arch/arm/mach-ixp4xx/nslu2-pci.c Normal file
View file

@ -0,0 +1,77 @@
/*
* arch/arm/mach-ixp4xx/nslu2-pci.c
*
* NSLU2 board-level PCI initialization
*
* based on ixdp425-pci.c:
* Copyright (C) 2002 Intel Corporation.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* Maintainer: http://www.nslu2-linux.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/config.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/mach/pci.h>
#include <asm/mach-types.h>
void __init nslu2_pci_preinit(void)
{
set_irq_type(IRQ_NSLU2_PCI_INTA, IRQT_LOW);
set_irq_type(IRQ_NSLU2_PCI_INTB, IRQT_LOW);
set_irq_type(IRQ_NSLU2_PCI_INTC, IRQT_LOW);
gpio_line_isr_clear(NSLU2_PCI_INTA_PIN);
gpio_line_isr_clear(NSLU2_PCI_INTB_PIN);
gpio_line_isr_clear(NSLU2_PCI_INTC_PIN);
/* INTD is not configured as GPIO is used
* for the power input button.
*/
ixp4xx_pci_preinit();
}
static int __init nslu2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
static int pci_irq_table[NSLU2_PCI_IRQ_LINES] = {
IRQ_NSLU2_PCI_INTA,
IRQ_NSLU2_PCI_INTB,
IRQ_NSLU2_PCI_INTC,
};
int irq = -1;
if (slot >= 1 && slot <= NSLU2_PCI_MAX_DEV &&
pin >= 1 && pin <= NSLU2_PCI_IRQ_LINES) {
irq = pci_irq_table[(slot + pin - 2) % NSLU2_PCI_IRQ_LINES];
}
return irq;
}
struct hw_pci __initdata nslu2_pci = {
.nr_controllers = 1,
.preinit = nslu2_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = nslu2_map_irq,
};
int __init nslu2_pci_init(void) /* monkey see, monkey do */
{
if (machine_is_nslu2())
pci_common_init(&nslu2_pci);
return 0;
}
subsys_initcall(nslu2_pci_init);

92
arch/arm/mach-ixp4xx/nslu2-power.c Normal file
View file

@ -0,0 +1,92 @@
/*
* arch/arm/mach-ixp4xx/nslu2-power.c
*
* NSLU2 Power/Reset driver
*
* Copyright (C) 2005 Tower Technologies
*
* based on nslu2-io.c
* Copyright (C) 2004 Karen Spearel
*
* Author: Alessandro Zummo <a.zummo@towertech.it>
* Maintainers: http://www.nslu2-linux.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/module.h>
#include <linux/reboot.h>
#include <linux/interrupt.h>
#include <asm/mach-types.h>
extern void ctrl_alt_del(void);
static irqreturn_t nslu2_power_handler(int irq, void *dev_id, struct pt_regs *regs)
{
/* Signal init to do the ctrlaltdel action, this will bypass init if
* it hasn't started and do a kernel_restart.
*/
ctrl_alt_del();
return IRQ_HANDLED;
}
static irqreturn_t nslu2_reset_handler(int irq, void *dev_id, struct pt_regs *regs)
{
/* This is the paper-clip reset, it shuts the machine down directly.
*/
machine_power_off();
return IRQ_HANDLED;
}
static int __init nslu2_power_init(void)
{
if (!(machine_is_nslu2()))
return 0;
*IXP4XX_GPIO_GPISR = 0x20400000; /* read the 2 irqs to clr */
set_irq_type(NSLU2_RB_IRQ, IRQT_LOW);
set_irq_type(NSLU2_PB_IRQ, IRQT_HIGH);
gpio_line_isr_clear(NSLU2_RB_GPIO);
gpio_line_isr_clear(NSLU2_PB_GPIO);
if (request_irq(NSLU2_RB_IRQ, &nslu2_reset_handler,
SA_INTERRUPT, "NSLU2 reset button", NULL) < 0) {
printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
NSLU2_RB_IRQ);
return -EIO;
}
if (request_irq(NSLU2_PB_IRQ, &nslu2_power_handler,
SA_INTERRUPT, "NSLU2 power button", NULL) < 0) {
printk(KERN_DEBUG "Power Button IRQ %d not available\n",
NSLU2_PB_IRQ);
return -EIO;
}
return 0;
}
static void __exit nslu2_power_exit(void)
{
free_irq(NSLU2_RB_IRQ, NULL);
free_irq(NSLU2_PB_IRQ, NULL);
}
module_init(nslu2_power_init);
module_exit(nslu2_power_exit);
MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
MODULE_DESCRIPTION("NSLU2 Power/Reset driver");
MODULE_LICENSE("GPL");

134
arch/arm/mach-ixp4xx/nslu2-setup.c Normal file
View file

@ -0,0 +1,134 @@
/*
* arch/arm/mach-ixp4xx/nslu2-setup.c
*
* NSLU2 board-setup
*
* based ixdp425-setup.c:
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* Author: Mark Rakes <mrakes at mac.com>
* Maintainers: http://www.nslu2-linux.org/
*
* Fixed missing init_time in MACHINE_START kas11 10/22/04
* Changed to conform to new style __init ixdp425 kas11 10/22/04
*/
#include <linux/kernel.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
static struct flash_platform_data nslu2_flash_data = {
.map_name = "cfi_probe",
.width = 2,
};
static struct resource nslu2_flash_resource = {
.start = NSLU2_FLASH_BASE,
.end = NSLU2_FLASH_BASE + NSLU2_FLASH_SIZE,
.flags = IORESOURCE_MEM,
};
static struct platform_device nslu2_flash = {
.name = "IXP4XX-Flash",
.id = 0,
.dev.platform_data = &nslu2_flash_data,
.num_resources = 1,
.resource = &nslu2_flash_resource,
};
static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
.sda_pin = NSLU2_SDA_PIN,
.scl_pin = NSLU2_SCL_PIN,
};
static struct platform_device nslu2_i2c_controller = {
.name = "IXP4XX-I2C",
.id = 0,
.dev.platform_data = &nslu2_i2c_gpio_pins,
.num_resources = 0,
};
static struct resource nslu2_uart_resources[] = {
{
.start = IXP4XX_UART1_BASE_PHYS,
.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM,
},
{
.start = IXP4XX_UART2_BASE_PHYS,
.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
.flags = IORESOURCE_MEM,
}
};
static struct plat_serial8250_port nslu2_uart_data[] = {
{
.mapbase = IXP4XX_UART1_BASE_PHYS,
.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
.irq = IRQ_IXP4XX_UART1,
.flags = UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = IXP4XX_UART_XTAL,
},
{
.mapbase = IXP4XX_UART2_BASE_PHYS,
.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
.irq = IRQ_IXP4XX_UART2,
.flags = UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = IXP4XX_UART_XTAL,
},
{ }
};
static struct platform_device nslu2_uart = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev.platform_data = nslu2_uart_data,
.num_resources = 2,
.resource = nslu2_uart_resources,
};
static struct platform_device *nslu2_devices[] __initdata = {
&nslu2_i2c_controller,
&nslu2_flash,
&nslu2_uart,
};
static void nslu2_power_off(void)
{
/* This causes the box to drop the power and go dead. */
/* enable the pwr cntl gpio */
gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
/* do the deed */
gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
}
static void __init nslu2_init(void)
{
ixp4xx_sys_init();
pm_power_off = nslu2_power_off;
platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
}
MACHINE_START(NSLU2, "Linksys NSLU2")
/* Maintainer: www.nslu2-linux.org */
.phys_ram = PHYS_OFFSET,
.phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
.io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
.boot_params = 0x00000100,
.map_io = ixp4xx_map_io,
.init_irq = ixp4xx_init_irq,
.timer = &ixp4xx_timer,
.init_machine = nslu2_init,
MACHINE_END

32
arch/arm/mach-omap1/Kconfig
View file

@ -6,10 +6,10 @@ config ARCH_OMAP730
bool "OMAP730 Based System"
select ARCH_OMAP_OTG
config ARCH_OMAP1510
config ARCH_OMAP15XX
depends on ARCH_OMAP1
default y
bool "OMAP1510 Based System"
bool "OMAP15xx Based System"
config ARCH_OMAP16XX
depends on ARCH_OMAP1
@ -21,7 +21,7 @@ comment "OMAP Board Type"
config MACH_OMAP_INNOVATOR
bool "TI Innovator"
depends on ARCH_OMAP1 && (ARCH_OMAP1510 || ARCH_OMAP16XX)
depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX)
help
TI OMAP 1510 or 1610 Innovator board support. Say Y here if you
have such a board.
@ -64,20 +64,30 @@ config MACH_OMAP_PERSEUS2
config MACH_VOICEBLUE
bool "Voiceblue"
depends on ARCH_OMAP1 && ARCH_OMAP1510
depends on ARCH_OMAP1 && ARCH_OMAP15XX
help
Support for Voiceblue GSM/VoIP gateway. Say Y here if you have
such a board.
config MACH_NETSTAR
bool "NetStar"
depends on ARCH_OMAP1 && ARCH_OMAP1510
depends on ARCH_OMAP1 && ARCH_OMAP15XX
help
Support for NetStar PBX. Say Y here if you have such a board.
config MACH_OMAP_PALMTE
bool "Palm Tungsten E"
depends on ARCH_OMAP1 && ARCH_OMAP15XX
help
Support for the Palm Tungsten E PDA. Currently only the LCD panel
is supported. To boot the kernel, you'll need a PalmOS compatible
bootloader; check out http://palmtelinux.sourceforge.net for more
informations.
Say Y here if you have such a PDA, say NO otherwise.
config MACH_OMAP_GENERIC
bool "Generic OMAP board"
depends on ARCH_OMAP1 && (ARCH_OMAP1510 || ARCH_OMAP16XX)
depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX)
help
Support for generic OMAP-1510, 1610 or 1710 board with
no FPGA. Can be used as template for porting Linux to
@ -121,32 +131,32 @@ config OMAP_ARM_182MHZ
config OMAP_ARM_168MHZ
bool "OMAP ARM 168 MHz CPU"
depends on ARCH_OMAP1 && (ARCH_OMAP1510 || ARCH_OMAP16XX || ARCH_OMAP730)
depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730)
help
Enable 168MHz clock for OMAP CPU. If unsure, say N.
config OMAP_ARM_150MHZ
bool "OMAP ARM 150 MHz CPU"
depends on ARCH_OMAP1 && ARCH_OMAP1510
depends on ARCH_OMAP1 && ARCH_OMAP15XX
help
Enable 150MHz clock for OMAP CPU. If unsure, say N.
config OMAP_ARM_120MHZ
bool "OMAP ARM 120 MHz CPU"
depends on ARCH_OMAP1 && (ARCH_OMAP1510 || ARCH_OMAP16XX || ARCH_OMAP730)
depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730)
help
Enable 120MHz clock for OMAP CPU. If unsure, say N.
config OMAP_ARM_60MHZ
bool "OMAP ARM 60 MHz CPU"
depends on ARCH_OMAP1 && (ARCH_OMAP1510 || ARCH_OMAP16XX || ARCH_OMAP730)
depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730)
default y
help
Enable 60MHz clock for OMAP CPU. If unsure, say Y.
config OMAP_ARM_30MHZ
bool "OMAP ARM 30 MHz CPU"
depends on ARCH_OMAP1 && (ARCH_OMAP1510 || ARCH_OMAP16XX || ARCH_OMAP730)
depends on ARCH_OMAP1 && (ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730)
help
Enable 30MHz clock for OMAP CPU. If unsure, say N.

5
arch/arm/mach-omap1/Makefile
View file

@ -3,7 +3,7 @@
#
# Common support
obj-y := io.o id.o irq.o time.o serial.o devices.o
obj-y := io.o id.o clock.o irq.o time.o mux.o serial.o devices.o
led-y := leds.o
# Specific board support
@ -15,8 +15,9 @@ obj-$(CONFIG_MACH_OMAP_OSK) += board-osk.o
obj-$(CONFIG_MACH_OMAP_H3) += board-h3.o
obj-$(CONFIG_MACH_VOICEBLUE) += board-voiceblue.o
obj-$(CONFIG_MACH_NETSTAR) += board-netstar.o
obj-$(CONFIG_MACH_OMAP_PALMTE) += board-palmte.o
ifeq ($(CONFIG_ARCH_OMAP1510),y)
ifeq ($(CONFIG_ARCH_OMAP15XX),y)
# Innovator-1510 FPGA
obj-$(CONFIG_MACH_OMAP_INNOVATOR) += fpga.o
endif

33
arch/arm/mach-omap1/board-generic.c
View file

@ -15,7 +15,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
@ -28,8 +28,6 @@
#include <asm/arch/board.h>
#include <asm/arch/common.h>
static int __initdata generic_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
static void __init omap_generic_init_irq(void)
{
omap_init_irq();
@ -37,7 +35,7 @@ static void __init omap_generic_init_irq(void)
/* assume no Mini-AB port */
#ifdef CONFIG_ARCH_OMAP1510
#ifdef CONFIG_ARCH_OMAP15XX
static struct omap_usb_config generic1510_usb_config __initdata = {
.register_host = 1,
.register_dev = 1,
@ -76,21 +74,19 @@ static struct omap_mmc_config generic_mmc_config __initdata = {
#endif
static struct omap_uart_config generic_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct omap_board_config_kernel generic_config[] = {
{ OMAP_TAG_USB, NULL },
{ OMAP_TAG_MMC, &generic_mmc_config },
{ OMAP_TAG_UART, &generic_uart_config },
};
static void __init omap_generic_init(void)
{
const struct omap_uart_config *uart_conf;
/*
* Make sure the serial ports are muxed on at this point.
* You have to mux them off in device drivers later on
* if not needed.
*/
#ifdef CONFIG_ARCH_OMAP1510
#ifdef CONFIG_ARCH_OMAP15XX
if (cpu_is_omap1510()) {
generic_config[0].data = &generic1510_usb_config;
}
@ -101,20 +97,9 @@ static void __init omap_generic_init(void)
}
#endif
uart_conf = omap_get_config(OMAP_TAG_UART, struct omap_uart_config);
if (uart_conf != NULL) {
unsigned int enabled_ports, i;
enabled_ports = uart_conf->enabled_uarts;
for (i = 0; i < 3; i++) {
if (!(enabled_ports & (1 << i)))
generic_serial_ports[i] = 0;
}
}
omap_board_config = generic_config;
omap_board_config_size = ARRAY_SIZE(generic_config);
omap_serial_init(generic_serial_ports);
omap_serial_init();
}
static void __init omap_generic_map_io(void)

15
arch/arm/mach-omap1/board-h2.c
View file

@ -40,8 +40,6 @@
extern int omap_gpio_init(void);
static int __initdata h2_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
static struct mtd_partition h2_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
@ -160,9 +158,20 @@ static struct omap_mmc_config h2_mmc_config __initdata = {
},
};
static struct omap_uart_config h2_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct omap_lcd_config h2_lcd_config __initdata = {
.panel_name = "h2",
.ctrl_name = "internal",
};
static struct omap_board_config_kernel h2_config[] = {
{ OMAP_TAG_USB, &h2_usb_config },
{ OMAP_TAG_MMC, &h2_mmc_config },
{ OMAP_TAG_UART, &h2_uart_config },
{ OMAP_TAG_LCD, &h2_lcd_config },
};
static void __init h2_init(void)
@ -180,12 +189,12 @@ static void __init h2_init(void)
platform_add_devices(h2_devices, ARRAY_SIZE(h2_devices));
omap_board_config = h2_config;
omap_board_config_size = ARRAY_SIZE(h2_config);
omap_serial_init();
}
static void __init h2_map_io(void)
{
omap_map_common_io();
omap_serial_init(h2_serial_ports);
}
MACHINE_START(OMAP_H2, "TI-H2")

19
arch/arm/mach-omap1/board-h3.c
View file

@ -41,8 +41,6 @@
extern int omap_gpio_init(void);
static int __initdata h3_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
static struct mtd_partition h3_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
@ -168,9 +166,20 @@ static struct omap_mmc_config h3_mmc_config __initdata = {
},
};
static struct omap_uart_config h3_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct omap_lcd_config h3_lcd_config __initdata = {
.panel_name = "h3",
.ctrl_name = "internal",
};
static struct omap_board_config_kernel h3_config[] = {
{ OMAP_TAG_USB, &h3_usb_config },
{ OMAP_TAG_MMC, &h3_mmc_config },
{ OMAP_TAG_USB, &h3_usb_config },
{ OMAP_TAG_MMC, &h3_mmc_config },
{ OMAP_TAG_UART, &h3_uart_config },
{ OMAP_TAG_LCD, &h3_lcd_config },
};
static void __init h3_init(void)
@ -180,6 +189,7 @@ static void __init h3_init(void)
(void) platform_add_devices(devices, ARRAY_SIZE(devices));
omap_board_config = h3_config;
omap_board_config_size = ARRAY_SIZE(h3_config);
omap_serial_init();
}
static void __init h3_init_smc91x(void)
@ -201,7 +211,6 @@ void h3_init_irq(void)
static void __init h3_map_io(void)
{
omap_map_common_io();
omap_serial_init(h3_serial_ports);
}
MACHINE_START(OMAP_H3, "TI OMAP1710 H3 board")

42
arch/arm/mach-omap1/board-innovator.c
View file

@ -36,8 +36,6 @@
#include <asm/arch/usb.h>
#include <asm/arch/common.h>
static int __initdata innovator_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
static struct mtd_partition innovator_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
@ -99,7 +97,7 @@ static struct platform_device innovator_flash_device = {
.resource = &innovator_flash_resource,
};
#ifdef CONFIG_ARCH_OMAP1510
#ifdef CONFIG_ARCH_OMAP15XX
/* Only FPGA needs to be mapped here. All others are done with ioremap */
static struct map_desc innovator1510_io_desc[] __initdata = {
@ -136,7 +134,7 @@ static struct platform_device *innovator1510_devices[] __initdata = {
&innovator1510_smc91x_device,
};
#endif /* CONFIG_ARCH_OMAP1510 */
#endif /* CONFIG_ARCH_OMAP15XX */
#ifdef CONFIG_ARCH_OMAP16XX
@ -185,7 +183,7 @@ void innovator_init_irq(void)
{
omap_init_irq();
omap_gpio_init();
#ifdef CONFIG_ARCH_OMAP1510
#ifdef CONFIG_ARCH_OMAP15XX
if (cpu_is_omap1510()) {
omap1510_fpga_init_irq();
}
@ -193,7 +191,7 @@ void innovator_init_irq(void)
innovator_init_smc91x();
}
#ifdef CONFIG_ARCH_OMAP1510
#ifdef CONFIG_ARCH_OMAP15XX
static struct omap_usb_config innovator1510_usb_config __initdata = {
/* for bundled non-standard host and peripheral cables */
.hmc_mode = 4,
@ -205,6 +203,11 @@ static struct omap_usb_config innovator1510_usb_config __initdata = {
.register_dev = 1,
.pins[0] = 2,
};
static struct omap_lcd_config innovator1510_lcd_config __initdata = {
.panel_name = "inn1510",
.ctrl_name = "internal",
};
#endif
#ifdef CONFIG_ARCH_OMAP16XX
@ -222,6 +225,11 @@ static struct omap_usb_config h2_usb_config __initdata = {
.pins[1] = 3,
};
static struct omap_lcd_config innovator1610_lcd_config __initdata = {
.panel_name = "inn1610",
.ctrl_name = "internal",
};
#endif
static struct omap_mmc_config innovator_mmc_config __initdata = {
@ -234,14 +242,20 @@ static struct omap_mmc_config innovator_mmc_config __initdata = {
},
};
static struct omap_uart_config innovator_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct omap_board_config_kernel innovator_config[] = {
{ OMAP_TAG_USB, NULL },
{ OMAP_TAG_LCD, NULL },
{ OMAP_TAG_MMC, &innovator_mmc_config },
{ OMAP_TAG_UART, &innovator_uart_config },
};
static void __init innovator_init(void)
{
#ifdef CONFIG_ARCH_OMAP1510
#ifdef CONFIG_ARCH_OMAP15XX
if (cpu_is_omap1510()) {
platform_add_devices(innovator1510_devices, ARRAY_SIZE(innovator1510_devices));
}
@ -252,23 +266,28 @@ static void __init innovator_init(void)
}
#endif
#ifdef CONFIG_ARCH_OMAP1510
if (cpu_is_omap1510())
#ifdef CONFIG_ARCH_OMAP15XX
if (cpu_is_omap1510()) {
innovator_config[0].data = &innovator1510_usb_config;
innovator_config[1].data = &innovator1510_lcd_config;
}
#endif
#ifdef CONFIG_ARCH_OMAP16XX
if (cpu_is_omap1610())
if (cpu_is_omap1610()) {
innovator_config[0].data = &h2_usb_config;
innovator_config[1].data = &innovator1610_lcd_config;
}
#endif
omap_board_config = innovator_config;
omap_board_config_size = ARRAY_SIZE(innovator_config);
omap_serial_init();
}
static void __init innovator_map_io(void)
{
omap_map_common_io();
#ifdef CONFIG_ARCH_OMAP1510
#ifdef CONFIG_ARCH_OMAP15XX
if (cpu_is_omap1510()) {
iotable_init(innovator1510_io_desc, ARRAY_SIZE(innovator1510_io_desc));
udelay(10); /* Delay needed for FPGA */
@ -280,7 +299,6 @@ static void __init innovator_map_io(void)
fpga_read(OMAP1510_FPGA_BOARD_REV));
}
#endif
omap_serial_init(innovator_serial_ports);
}
MACHINE_START(OMAP_INNOVATOR, "TI-Innovator")

15
arch/arm/mach-omap1/board-netstar.c
View file

@ -55,6 +55,14 @@ static struct platform_device *netstar_devices[] __initdata = {
&netstar_smc91x_device,
};
static struct omap_uart_config netstar_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct omap_board_config_kernel netstar_config[] = {
{ OMAP_TAG_UART, &netstar_uart_config },
};
static void __init netstar_init_irq(void)
{
omap_init_irq();
@ -92,14 +100,15 @@ static void __init netstar_init(void)
/* Switch off red LED */
omap_writeb(0x00, OMAP_LPG1_PMR); /* Disable clock */
omap_writeb(0x80, OMAP_LPG1_LCR);
}
static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
omap_board_config = netstar_config;
omap_board_config_size = ARRAY_SIZE(netstar_config);
omap_serial_init();
}
static void __init netstar_map_io(void)
{
omap_map_common_io();
omap_serial_init(omap_serial_ports);
}
#define MACHINE_PANICED 1

17
arch/arm/mach-omap1/board-osk.c
View file

@ -46,8 +46,6 @@
#include <asm/arch/tc.h>
#include <asm/arch/common.h>
static int __initdata osk_serial_ports[OMAP_MAX_NR_PORTS] = {1, 0, 0};
static struct mtd_partition osk_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
@ -155,7 +153,7 @@ static void __init osk_init_smc91x(void)
}
/* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
EMIFS_CCS(1) |= 0x2;
EMIFS_CCS(1) |= 0x3;
}
static void __init osk_init_cf(void)
@ -193,8 +191,19 @@ static struct omap_usb_config osk_usb_config __initdata = {
.pins[0] = 2,
};
static struct omap_uart_config osk_uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
static struct omap_lcd_config osk_lcd_config __initdata = {
.panel_name = "osk",
.ctrl_name = "internal",
};
static struct omap_board_config_kernel osk_config[] = {
{ OMAP_TAG_USB, &osk_usb_config },
{ OMAP_TAG_UART, &osk_uart_config },
{ OMAP_TAG_LCD, &osk_lcd_config },
};
#ifdef CONFIG_OMAP_OSK_MISTRAL
@ -254,13 +263,13 @@ static void __init osk_init(void)
omap_board_config_size = ARRAY_SIZE(osk_config);
USB_TRANSCEIVER_CTRL_REG |= (3 << 1);
omap_serial_init();
osk_mistral_init();
}
static void __init osk_map_io(void)
{
omap_map_common_io();
omap_serial_init(osk_serial_ports);
}
MACHINE_START(OMAP_OSK, "TI-OSK")

87
arch/arm/mach-omap1/board-palmte.c Normal file
View file

@ -0,0 +1,87 @@
/*
* linux/arch/arm/mach-omap1/board-palmte.c
*
* Modified from board-generic.c
*
* Support for the Palm Tungsten E PDA.
*
* Original version : Laurent Gonzalez
*
* Maintainters : http://palmtelinux.sf.net
* palmtelinux-developpers@lists.sf.net
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/notifier.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mux.h>
#include <asm/arch/usb.h>
#include <asm/arch/board.h>
#include <asm/arch/common.h>
#include <asm/hardware/clock.h>
static void __init omap_generic_init_irq(void)
{
omap_init_irq();
}
static struct omap_usb_config palmte_usb_config __initdata = {
.register_dev = 1,
.hmc_mode = 0,
.pins[0] = 3,
};
static struct omap_mmc_config palmte_mmc_config __initdata = {
.mmc [0] = {
.enabled = 1,
.wire4 = 1,
.wp_pin = OMAP_MPUIO(3),
.power_pin = -1,
.switch_pin = -1,
},
};
static struct omap_lcd_config palmte_lcd_config __initdata = {
.panel_name = "palmte",
.ctrl_name = "internal",
};
static struct omap_board_config_kernel palmte_config[] = {
{ OMAP_TAG_USB, &palmte_usb_config },
{ OMAP_TAG_MMC, &palmte_mmc_config },
{ OMAP_TAG_LCD, &palmte_lcd_config },
};
static void __init omap_generic_init(void)
{
omap_board_config = palmte_config;
omap_board_config_size = ARRAY_SIZE(palmte_config);
}
static void __init omap_generic_map_io(void)
{
omap_map_common_io();
}
MACHINE_START(OMAP_PALMTE, "OMAP310 based Palm Tungsten E")
.phys_ram = 0x10000000,
.phys_io = 0xfff00000,
.io_pg_offst = ((0xfef00000) >> 18) & 0xfffc,
.boot_params = 0x10000100,
.map_io = omap_generic_map_io,
.init_irq = omap_generic_init_irq,
.init_machine = omap_generic_init,
.timer = &omap_timer,
MACHINE_END

23
arch/arm/mach-omap1/board-perseus2.c
View file

@ -29,6 +29,7 @@
#include <asm/arch/mux.h>
#include <asm/arch/fpga.h>
#include <asm/arch/common.h>
#include <asm/arch/board.h>
static struct resource smc91x_resources[] = {
[0] = {
@ -43,8 +44,6 @@ static struct resource smc91x_resources[] = {
},
};
static int __initdata p2_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 0};
static struct mtd_partition p2_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
@ -111,9 +110,27 @@ static struct platform_device *devices[] __initdata = {
&smc91x_device,
};
static struct omap_uart_config perseus2_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1)),
};
static struct omap_lcd_config perseus2_lcd_config __initdata = {
.panel_name = "p2",
.ctrl_name = "internal",
};
static struct omap_board_config_kernel perseus2_config[] = {
{ OMAP_TAG_UART, &perseus2_uart_config },
{ OMAP_TAG_LCD, &perseus2_lcd_config },
};
static void __init omap_perseus2_init(void)
{
(void) platform_add_devices(devices, ARRAY_SIZE(devices));
omap_board_config = perseus2_config;
omap_board_config_size = ARRAY_SIZE(perseus2_config);
omap_serial_init();
}
static void __init perseus2_init_smc91x(void)
@ -131,7 +148,6 @@ void omap_perseus2_init_irq(void)
omap_gpio_init();
perseus2_init_smc91x();
}
/* Only FPGA needs to be mapped here. All others are done with ioremap */
static struct map_desc omap_perseus2_io_desc[] __initdata = {
{
@ -179,7 +195,6 @@ static void __init omap_perseus2_map_io(void)
* It is used as the Ethernet controller interrupt
*/
omap_writel(omap_readl(OMAP730_IO_CONF_9) & 0x1FFFFFFF, OMAP730_IO_CONF_9);
omap_serial_init(p2_serial_ports);
}
MACHINE_START(OMAP_PERSEUS2, "OMAP730 Perseus2")

9
arch/arm/mach-omap1/board-voiceblue.c
View file

@ -150,9 +150,14 @@ static struct omap_mmc_config voiceblue_mmc_config __initdata = {
},
};
static struct omap_uart_config voiceblue_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static struct omap_board_config_kernel voiceblue_config[] = {
{ OMAP_TAG_USB, &voiceblue_usb_config },
{ OMAP_TAG_MMC, &voiceblue_mmc_config },
{ OMAP_TAG_UART, &voiceblue_uart_config },
};
static void __init voiceblue_init_irq(void)
@ -191,6 +196,7 @@ static void __init voiceblue_init(void)
platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
omap_board_config = voiceblue_config;
omap_board_config_size = ARRAY_SIZE(voiceblue_config);
omap_serial_init();
/* There is a good chance board is going up, so enable power LED
* (it is connected through invertor) */
@ -198,12 +204,9 @@ static void __init voiceblue_init(void)
omap_writeb(0x00, OMAP_LPG1_PMR); /* Disable clock */
}
static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
static void __init voiceblue_map_io(void)
{
omap_map_common_io();
omap_serial_init(omap_serial_ports);
}
#define MACHINE_PANICED 1

792
arch/arm/mach-omap1/clock.c Normal file
View file

@ -0,0 +1,792 @@
/*
* linux/arch/arm/mach-omap1/clock.c
*
* Copyright (C) 2004 - 2005 Nokia corporation
* Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
*
* Modified to use omap shared clock framework by
* Tony Lindgren <tony@atomide.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <asm/io.h>
#include <asm/hardware/clock.h>
#include <asm/arch/usb.h>
#include <asm/arch/clock.h>
#include <asm/arch/sram.h>
#include "clock.h"
__u32 arm_idlect1_mask;
/*-------------------------------------------------------------------------
* Omap1 specific clock functions
*-------------------------------------------------------------------------*/
static void omap1_watchdog_recalc(struct clk * clk)
{
clk->rate = clk->parent->rate / 14;
}
static void omap1_uart_recalc(struct clk * clk)
{
unsigned int val = omap_readl(clk->enable_reg);
if (val & clk->enable_bit)
clk->rate = 48000000;
else
clk->rate = 12000000;
}
static int omap1_clk_enable_dsp_domain(struct clk *clk)
{
int retval;
retval = omap1_clk_use(&api_ck.clk);
if (!retval) {
retval = omap1_clk_enable(clk);
omap1_clk_unuse(&api_ck.clk);
}
return retval;
}
static void omap1_clk_disable_dsp_domain(struct clk *clk)
{
if (omap1_clk_use(&api_ck.clk) == 0) {
omap1_clk_disable(clk);
omap1_clk_unuse(&api_ck.clk);
}
}
static int omap1_clk_enable_uart_functional(struct clk *clk)
{
int ret;
struct uart_clk *uclk;
ret = omap1_clk_enable(clk);
if (ret == 0) {
/* Set smart idle acknowledgement mode */
uclk = (struct uart_clk *)clk;
omap_writeb((omap_readb(uclk->sysc_addr) & ~0x10) | 8,
uclk->sysc_addr);
}
return ret;
}
static void omap1_clk_disable_uart_functional(struct clk *clk)
{
struct uart_clk *uclk;
/* Set force idle acknowledgement mode */
uclk = (struct uart_clk *)clk;
omap_writeb((omap_readb(uclk->sysc_addr) & ~0x18), uclk->sysc_addr);
omap1_clk_disable(clk);
}
static void omap1_clk_allow_idle(struct clk *clk)
{
struct arm_idlect1_clk * iclk = (struct arm_idlect1_clk *)clk;
if (!(clk->flags & CLOCK_IDLE_CONTROL))
return;
if (iclk->no_idle_count > 0 && !(--iclk->no_idle_count))
arm_idlect1_mask |= 1 << iclk->idlect_shift;
}
static void omap1_clk_deny_idle(struct clk *clk)
{
struct arm_idlect1_clk * iclk = (struct arm_idlect1_clk *)clk;
if (!(clk->flags & CLOCK_IDLE_CONTROL))
return;
if (iclk->no_idle_count++ == 0)
arm_idlect1_mask &= ~(1 << iclk->idlect_shift);
}
static __u16 verify_ckctl_value(__u16 newval)
{
/* This function checks for following limitations set
* by the hardware (all conditions must be true):
* DSPMMU_CK == DSP_CK or DSPMMU_CK == DSP_CK/2
* ARM_CK >= TC_CK
* DSP_CK >= TC_CK
* DSPMMU_CK >= TC_CK
*
* In addition following rules are enforced:
* LCD_CK <= TC_CK
* ARMPER_CK <= TC_CK
*
* However, maximum frequencies are not checked for!
*/
__u8 per_exp;
__u8 lcd_exp;
__u8 arm_exp;
__u8 dsp_exp;
__u8 tc_exp;
__u8 dspmmu_exp;
per_exp = (newval >> CKCTL_PERDIV_OFFSET) & 3;
lcd_exp = (newval >> CKCTL_LCDDIV_OFFSET) & 3;
arm_exp = (newval >> CKCTL_ARMDIV_OFFSET) & 3;
dsp_exp = (newval >> CKCTL_DSPDIV_OFFSET) & 3;
tc_exp = (newval >> CKCTL_TCDIV_OFFSET) & 3;
dspmmu_exp = (newval >> CKCTL_DSPMMUDIV_OFFSET) & 3;
if (dspmmu_exp < dsp_exp)
dspmmu_exp = dsp_exp;
if (dspmmu_exp > dsp_exp+1)
dspmmu_exp = dsp_exp+1;
if (tc_exp < arm_exp)
tc_exp = arm_exp;
if (tc_exp < dspmmu_exp)
tc_exp = dspmmu_exp;
if (tc_exp > lcd_exp)
lcd_exp = tc_exp;
if (tc_exp > per_exp)
per_exp = tc_exp;
newval &= 0xf000;
newval |= per_exp << CKCTL_PERDIV_OFFSET;
newval |= lcd_exp << CKCTL_LCDDIV_OFFSET;
newval |= arm_exp << CKCTL_ARMDIV_OFFSET;
newval |= dsp_exp << CKCTL_DSPDIV_OFFSET;
newval |= tc_exp << CKCTL_TCDIV_OFFSET;
newval |= dspmmu_exp << CKCTL_DSPMMUDIV_OFFSET;
return newval;
}
static int calc_dsor_exp(struct clk *clk, unsigned long rate)
{
/* Note: If target frequency is too low, this function will return 4,
* which is invalid value. Caller must check for this value and act
* accordingly.
*
* Note: This function does not check for following limitations set
* by the hardware (all conditions must be true):
* DSPMMU_CK == DSP_CK or DSPMMU_CK == DSP_CK/2
* ARM_CK >= TC_CK
* DSP_CK >= TC_CK
* DSPMMU_CK >= TC_CK
*/
unsigned long realrate;
struct clk * parent;
unsigned dsor_exp;
if (unlikely(!(clk->flags & RATE_CKCTL)))
return -EINVAL;
parent = clk->parent;
if (unlikely(parent == 0))
return -EIO;
realrate = parent->rate;
for (dsor_exp=0; dsor_exp<4; dsor_exp++) {
if (realrate <= rate)
break;
realrate /= 2;
}
return dsor_exp;
}
static void omap1_ckctl_recalc(struct clk * clk)
{
int dsor;
/* Calculate divisor encoded as 2-bit exponent */
dsor = 1 << (3 & (omap_readw(ARM_CKCTL) >> clk->rate_offset));
if (unlikely(clk->rate == clk->parent->rate / dsor))
return; /* No change, quick exit */
clk->rate = clk->parent->rate / dsor;
if (unlikely(clk->flags & RATE_PROPAGATES))
propagate_rate(clk);
}
static void omap1_ckctl_recalc_dsp_domain(struct clk * clk)
{
int dsor;
/* Calculate divisor encoded as 2-bit exponent
*
* The clock control bits are in DSP domain,
* so api_ck is needed for access.
* Note that DSP_CKCTL virt addr = phys addr, so
* we must use __raw_readw() instead of omap_readw().
*/
omap1_clk_use(&api_ck.clk);
dsor = 1 << (3 & (__raw_readw(DSP_CKCTL) >> clk->rate_offset));
omap1_clk_unuse(&api_ck.clk);
if (unlikely(clk->rate == clk->parent->rate / dsor))
return; /* No change, quick exit */
clk->rate = clk->parent->rate / dsor;
if (unlikely(clk->flags & RATE_PROPAGATES))
propagate_rate(clk);
}
/* MPU virtual clock functions */
static int omap1_select_table_rate(struct clk * clk, unsigned long rate)
{
/* Find the highest supported frequency <= rate and switch to it */
struct mpu_rate * ptr;
if (clk != &virtual_ck_mpu)
return -EINVAL;
for (ptr = rate_table; ptr->rate; ptr++) {
if (ptr->xtal != ck_ref.rate)
continue;
/* DPLL1 cannot be reprogrammed without risking system crash */
if (likely(ck_dpll1.rate!=0) && ptr->pll_rate != ck_dpll1.rate)
continue;
/* Can check only after xtal frequency check */
if (ptr->rate <= rate)
break;
}
if (!ptr->rate)
return -EINVAL;
/*
* In most cases we should not need to reprogram DPLL.
* Reprogramming the DPLL is tricky, it must be done from SRAM.
*/
omap_sram_reprogram_clock(ptr->dpllctl_val, ptr->ckctl_val);
ck_dpll1.rate = ptr->pll_rate;
propagate_rate(&ck_dpll1);
return 0;
}
static int omap1_clk_set_rate_dsp_domain(struct clk *clk, unsigned long rate)
{
int ret = -EINVAL;
int dsor_exp;
__u16 regval;
if (clk->flags & RATE_CKCTL) {
dsor_exp = calc_dsor_exp(clk, rate);
if (dsor_exp > 3)
dsor_exp = -EINVAL;
if (dsor_exp < 0)
return dsor_exp;
regval = __raw_readw(DSP_CKCTL);
regval &= ~(3 << clk->rate_offset);
regval |= dsor_exp << clk->rate_offset;
__raw_writew(regval, DSP_CKCTL);
clk->rate = clk->parent->rate / (1 << dsor_exp);
ret = 0;
}
if (unlikely(ret == 0 && (clk->flags & RATE_PROPAGATES)))
propagate_rate(clk);
return ret;
}
static long omap1_round_to_table_rate(struct clk * clk, unsigned long rate)
{
/* Find the highest supported frequency <= rate */
struct mpu_rate * ptr;
long highest_rate;
if (clk != &virtual_ck_mpu)
return -EINVAL;
highest_rate = -EINVAL;
for (ptr = rate_table; ptr->rate; ptr++) {
if (ptr->xtal != ck_ref.rate)
continue;
highest_rate = ptr->rate;
/* Can check only after xtal frequency check */
if (ptr->rate <= rate)
break;
}
return highest_rate;
}
static unsigned calc_ext_dsor(unsigned long rate)
{
unsigned dsor;
/* MCLK and BCLK divisor selection is not linear:
* freq = 96MHz / dsor
*
* RATIO_SEL range: dsor <-> RATIO_SEL
* 0..6: (RATIO_SEL+2) <-> (dsor-2)
* 6..48: (8+(RATIO_SEL-6)*2) <-> ((dsor-8)/2+6)
* Minimum dsor is 2 and maximum is 96. Odd divisors starting from 9
* can not be used.
*/
for (dsor = 2; dsor < 96; ++dsor) {
if ((dsor & 1) && dsor > 8)
continue;
if (rate >= 96000000 / dsor)
break;
}
return dsor;
}
/* Only needed on 1510 */
static int omap1_set_uart_rate(struct clk * clk, unsigned long rate)
{
unsigned int val;
val = omap_readl(clk->enable_reg);
if (rate == 12000000)
val &= ~(1 << clk->enable_bit);
else if (rate == 48000000)
val |= (1 << clk->enable_bit);
else
return -EINVAL;
omap_writel(val, clk->enable_reg);
clk->rate = rate;
return 0;
}
/* External clock (MCLK & BCLK) functions */
static int omap1_set_ext_clk_rate(struct clk * clk, unsigned long rate)
{
unsigned dsor;
__u16 ratio_bits;
dsor = calc_ext_dsor(rate);
clk->rate = 96000000 / dsor;
if (dsor > 8)
ratio_bits = ((dsor - 8) / 2 + 6) << 2;
else
ratio_bits = (dsor - 2) << 2;
ratio_bits |= omap_readw(clk->enable_reg) & ~0xfd;
omap_writew(ratio_bits, clk->enable_reg);
return 0;
}
static long omap1_round_ext_clk_rate(struct clk * clk, unsigned long rate)
{
return 96000000 / calc_ext_dsor(rate);
}
static void omap1_init_ext_clk(struct clk * clk)
{
unsigned dsor;
__u16 ratio_bits;
/* Determine current rate and ensure clock is based on 96MHz APLL */
ratio_bits = omap_readw(clk->enable_reg) & ~1;
omap_writew(ratio_bits, clk->enable_reg);
ratio_bits = (ratio_bits & 0xfc) >> 2;
if (ratio_bits > 6)
dsor = (ratio_bits - 6) * 2 + 8;
else
dsor = ratio_bits + 2;
clk-> rate = 96000000 / dsor;
}
static int omap1_clk_use(struct clk *clk)
{
int ret = 0;
if (clk->usecount++ == 0) {
if (likely(clk->parent)) {
ret = omap1_clk_use(clk->parent);
if (unlikely(ret != 0)) {
clk->usecount--;
return ret;
}
if (clk->flags & CLOCK_NO_IDLE_PARENT)
if (!cpu_is_omap24xx())
omap1_clk_deny_idle(clk->parent);
}
ret = clk->enable(clk);
if (unlikely(ret != 0) && clk->parent) {
omap1_clk_unuse(clk->parent);
clk->usecount--;
}
}
return ret;
}
static void omap1_clk_unuse(struct clk *clk)
{
if (clk->usecount > 0 && !(--clk->usecount)) {
clk->disable(clk);
if (likely(clk->parent)) {
omap1_clk_unuse(clk->parent);
if (clk->flags & CLOCK_NO_IDLE_PARENT)
if (!cpu_is_omap24xx())
omap1_clk_allow_idle(clk->parent);
}
}
}
static int omap1_clk_enable(struct clk *clk)
{
__u16 regval16;
__u32 regval32;
if (clk->flags & ALWAYS_ENABLED)
return 0;
if (unlikely(clk->enable_reg == 0)) {
printk(KERN_ERR "clock.c: Enable for %s without enable code\n",
clk->name);
return 0;
}
if (clk->flags & ENABLE_REG_32BIT) {
if (clk->flags & VIRTUAL_IO_ADDRESS) {
regval32 = __raw_readl(clk->enable_reg);
regval32 |= (1 << clk->enable_bit);
__raw_writel(regval32, clk->enable_reg);
} else {
regval32 = omap_readl(clk->enable_reg);
regval32 |= (1 << clk->enable_bit);
omap_writel(regval32, clk->enable_reg);
}
} else {
if (clk->flags & VIRTUAL_IO_ADDRESS) {
regval16 = __raw_readw(clk->enable_reg);
regval16 |= (1 << clk->enable_bit);
__raw_writew(regval16, clk->enable_reg);
} else {
regval16 = omap_readw(clk->enable_reg);
regval16 |= (1 << clk->enable_bit);
omap_writew(regval16, clk->enable_reg);
}
}
return 0;
}
static void omap1_clk_disable(struct clk *clk)
{
__u16 regval16;
__u32 regval32;
if (clk->enable_reg == 0)
return;
if (clk->flags & ENABLE_REG_32BIT) {
if (clk->flags & VIRTUAL_IO_ADDRESS) {
regval32 = __raw_readl(clk->enable_reg);
regval32 &= ~(1 << clk->enable_bit);
__raw_writel(regval32, clk->enable_reg);
} else {
regval32 = omap_readl(clk->enable_reg);
regval32 &= ~(1 << clk->enable_bit);
omap_writel(regval32, clk->enable_reg);
}
} else {
if (clk->flags & VIRTUAL_IO_ADDRESS) {
regval16 = __raw_readw(clk->enable_reg);
regval16 &= ~(1 << clk->enable_bit);
__raw_writew(regval16, clk->enable_reg);
} else {
regval16 = omap_readw(clk->enable_reg);
regval16 &= ~(1 << clk->enable_bit);
omap_writew(regval16, clk->enable_reg);
}
}
}
static long omap1_clk_round_rate(struct clk *clk, unsigned long rate)
{
int dsor_exp;
if (clk->flags & RATE_FIXED)
return clk->rate;
if (clk->flags & RATE_CKCTL) {
dsor_exp = calc_dsor_exp(clk, rate);
if (dsor_exp < 0)
return dsor_exp;
if (dsor_exp > 3)
dsor_exp = 3;
return clk->parent->rate / (1 << dsor_exp);
}
if(clk->round_rate != 0)
return clk->round_rate(clk, rate);
return clk->rate;
}
static int omap1_clk_set_rate(struct clk *clk, unsigned long rate)
{
int ret = -EINVAL;
int dsor_exp;
__u16 regval;
if (clk->set_rate)
ret = clk->set_rate(clk, rate);
else if (clk->flags & RATE_CKCTL) {
dsor_exp = calc_dsor_exp(clk, rate);
if (dsor_exp > 3)
dsor_exp = -EINVAL;
if (dsor_exp < 0)
return dsor_exp;
regval = omap_readw(ARM_CKCTL);
regval &= ~(3 << clk->rate_offset);
regval |= dsor_exp << clk->rate_offset;
regval = verify_ckctl_value(regval);
omap_writew(regval, ARM_CKCTL);
clk->rate = clk->parent->rate / (1 << dsor_exp);
ret = 0;
}
if (unlikely(ret == 0 && (clk->flags & RATE_PROPAGATES)))
propagate_rate(clk);
return ret;
}
/*-------------------------------------------------------------------------
* Omap1 clock reset and init functions
*-------------------------------------------------------------------------*/
#ifdef CONFIG_OMAP_RESET_CLOCKS
/*
* Resets some clocks that may be left on from bootloader,
* but leaves serial clocks on. See also omap_late_clk_reset().
*/
static inline void omap1_early_clk_reset(void)
{
//omap_writel(0x3 << 29, MOD_CONF_CTRL_0);
}
static int __init omap1_late_clk_reset(void)
{
/* Turn off all unused clocks */
struct clk *p;
__u32 regval32;
/* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */
regval32 = omap_readw(SOFT_REQ_REG) & (1 << 4);
omap_writew(regval32, SOFT_REQ_REG);
omap_writew(0, SOFT_REQ_REG2);
list_for_each_entry(p, &clocks, node) {
if (p->usecount > 0 || (p->flags & ALWAYS_ENABLED) ||
p->enable_reg == 0)
continue;
/* Clocks in the DSP domain need api_ck. Just assume bootloader
* has not enabled any DSP clocks */
if ((u32)p->enable_reg == DSP_IDLECT2) {
printk(KERN_INFO "Skipping reset check for DSP domain "
"clock \"%s\"\n", p->name);
continue;
}
/* Is the clock already disabled? */
if (p->flags & ENABLE_REG_32BIT) {
if (p->flags & VIRTUAL_IO_ADDRESS)
regval32 = __raw_readl(p->enable_reg);
else
regval32 = omap_readl(p->enable_reg);
} else {
if (p->flags & VIRTUAL_IO_ADDRESS)
regval32 = __raw_readw(p->enable_reg);
else
regval32 = omap_readw(p->enable_reg);
}
if ((regval32 & (1 << p->enable_bit)) == 0)
continue;
/* FIXME: This clock seems to be necessary but no-one
* has asked for its activation. */
if (p == &tc2_ck // FIX: pm.c (SRAM), CCP, Camera
|| p == &ck_dpll1out.clk // FIX: SoSSI, SSR
|| p == &arm_gpio_ck // FIX: GPIO code for 1510
) {
printk(KERN_INFO "FIXME: Clock \"%s\" seems unused\n",
p->name);
continue;
}
printk(KERN_INFO "Disabling unused clock \"%s\"... ", p->name);
p->disable(p);
printk(" done\n");
}
return 0;
}
late_initcall(omap1_late_clk_reset);
#else
#define omap1_early_clk_reset() {}
#endif
static struct clk_functions omap1_clk_functions = {
.clk_use = omap1_clk_use,
.clk_unuse = omap1_clk_unuse,
.clk_round_rate = omap1_clk_round_rate,
.clk_set_rate = omap1_clk_set_rate,
};
int __init omap1_clk_init(void)
{
struct clk ** clkp;
const struct omap_clock_config *info;
int crystal_type = 0; /* Default 12 MHz */
omap1_early_clk_reset();
clk_init(&omap1_clk_functions);
/* By default all idlect1 clocks are allowed to idle */
arm_idlect1_mask = ~0;
for (clkp = onchip_clks; clkp < onchip_clks+ARRAY_SIZE(onchip_clks); clkp++) {
if (((*clkp)->flags &CLOCK_IN_OMAP1510) && cpu_is_omap1510()) {
clk_register(*clkp);
continue;
}
if (((*clkp)->flags &CLOCK_IN_OMAP16XX) && cpu_is_omap16xx()) {
clk_register(*clkp);
continue;
}
if (((*clkp)->flags &CLOCK_IN_OMAP730) && cpu_is_omap730()) {
clk_register(*clkp);
continue;
}
}
info = omap_get_config(OMAP_TAG_CLOCK, struct omap_clock_config);
if (info != NULL) {
if (!cpu_is_omap1510())
crystal_type = info->system_clock_type;
}
#if defined(CONFIG_ARCH_OMAP730)
ck_ref.rate = 13000000;
#elif defined(CONFIG_ARCH_OMAP16XX)
if (crystal_type == 2)
ck_ref.rate = 19200000;
#endif
printk("Clocks: ARM_SYSST: 0x%04x DPLL_CTL: 0x%04x ARM_CKCTL: 0x%04x\n",
omap_readw(ARM_SYSST), omap_readw(DPLL_CTL),
omap_readw(ARM_CKCTL));
/* We want to be in syncronous scalable mode */
omap_writew(0x1000, ARM_SYSST);
#ifdef CONFIG_OMAP_CLOCKS_SET_BY_BOOTLOADER
/* Use values set by bootloader. Determine PLL rate and recalculate
* dependent clocks as if kernel had changed PLL or divisors.
*/
{
unsigned pll_ctl_val = omap_readw(DPLL_CTL);
ck_dpll1.rate = ck_ref.rate; /* Base xtal rate */
if (pll_ctl_val & 0x10) {
/* PLL enabled, apply multiplier and divisor */
if (pll_ctl_val & 0xf80)
ck_dpll1.rate *= (pll_ctl_val & 0xf80) >> 7;
ck_dpll1.rate /= ((pll_ctl_val & 0x60) >> 5) + 1;
} else {
/* PLL disabled, apply bypass divisor */
switch (pll_ctl_val & 0xc) {
case 0:
break;
case 0x4:
ck_dpll1.rate /= 2;
break;
default:
ck_dpll1.rate /= 4;
break;
}
}
}
propagate_rate(&ck_dpll1);
#else
/* Find the highest supported frequency and enable it */
if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) {
printk(KERN_ERR "System frequencies not set. Check your config.\n");
/* Guess sane values (60MHz) */
omap_writew(0x2290, DPLL_CTL);
omap_writew(0x1005, ARM_CKCTL);
ck_dpll1.rate = 60000000;
propagate_rate(&ck_dpll1);
}
#endif
/* Cache rates for clocks connected to ck_ref (not dpll1) */
propagate_rate(&ck_ref);
printk(KERN_INFO "Clocking rate (xtal/DPLL1/MPU): "
"%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n",
ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10,
ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10,
arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10);
#ifdef CONFIG_MACH_OMAP_PERSEUS2
/* Select slicer output as OMAP input clock */
omap_writew(omap_readw(OMAP730_PCC_UPLD_CTRL) & ~0x1, OMAP730_PCC_UPLD_CTRL);
#endif
/* Turn off DSP and ARM_TIMXO. Make sure ARM_INTHCK is not divided */
omap_writew(omap_readw(ARM_CKCTL) & 0x0fff, ARM_CKCTL);
/* Put DSP/MPUI into reset until needed */
omap_writew(0, ARM_RSTCT1);
omap_writew(1, ARM_RSTCT2);
omap_writew(0x400, ARM_IDLECT1);
/*
* According to OMAP5910 Erratum SYS_DMA_1, bit DMACK_REQ (bit 8)
* of the ARM_IDLECT2 register must be set to zero. The power-on
* default value of this bit is one.
*/
omap_writew(0x0000, ARM_IDLECT2); /* Turn LCD clock off also */
/*
* Only enable those clocks we will need, let the drivers
* enable other clocks as necessary
*/
clk_use(&armper_ck.clk);
clk_use(&armxor_ck.clk);
clk_use(&armtim_ck.clk); /* This should be done by timer code */
if (cpu_is_omap1510())
clk_enable(&arm_gpio_ck);
return 0;
}

768
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/*
* linux/arch/arm/mach-omap1/clock.h
*
* Copyright (C) 2004 - 2005 Nokia corporation
* Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
* Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ARCH_ARM_MACH_OMAP1_CLOCK_H
#define __ARCH_ARM_MACH_OMAP1_CLOCK_H
static int omap1_clk_enable(struct clk * clk);
static void omap1_clk_disable(struct clk * clk);
static void omap1_ckctl_recalc(struct clk * clk);
static void omap1_watchdog_recalc(struct clk * clk);
static void omap1_ckctl_recalc_dsp_domain(struct clk * clk);
static int omap1_clk_enable_dsp_domain(struct clk * clk);
static int omap1_clk_set_rate_dsp_domain(struct clk * clk, unsigned long rate);
static void omap1_clk_disable_dsp_domain(struct clk * clk);
static int omap1_set_uart_rate(struct clk * clk, unsigned long rate);
static void omap1_uart_recalc(struct clk * clk);
static int omap1_clk_enable_uart_functional(struct clk * clk);
static void omap1_clk_disable_uart_functional(struct clk * clk);
static int omap1_set_ext_clk_rate(struct clk * clk, unsigned long rate);
static long omap1_round_ext_clk_rate(struct clk * clk, unsigned long rate);
static void omap1_init_ext_clk(struct clk * clk);
static int omap1_select_table_rate(struct clk * clk, unsigned long rate);
static long omap1_round_to_table_rate(struct clk * clk, unsigned long rate);
static int omap1_clk_use(struct clk *clk);
static void omap1_clk_unuse(struct clk *clk);
struct mpu_rate {
unsigned long rate;
unsigned long xtal;
unsigned long pll_rate;
__u16 ckctl_val;
__u16 dpllctl_val;
};
struct uart_clk {
struct clk clk;
unsigned long sysc_addr;
};
/* Provide a method for preventing idling some ARM IDLECT clocks */
struct arm_idlect1_clk {
struct clk clk;
unsigned long no_idle_count;
__u8 idlect_shift;
};
/* ARM_CKCTL bit shifts */
#define CKCTL_PERDIV_OFFSET 0
#define CKCTL_LCDDIV_OFFSET 2
#define CKCTL_ARMDIV_OFFSET 4
#define CKCTL_DSPDIV_OFFSET 6
#define CKCTL_TCDIV_OFFSET 8
#define CKCTL_DSPMMUDIV_OFFSET 10
/*#define ARM_TIMXO 12*/
#define EN_DSPCK 13
/*#define ARM_INTHCK_SEL 14*/ /* Divide-by-2 for mpu inth_ck */
/* DSP_CKCTL bit shifts */
#define CKCTL_DSPPERDIV_OFFSET 0
/* ARM_IDLECT2 bit shifts */
#define EN_WDTCK 0
#define EN_XORPCK 1
#define EN_PERCK 2
#define EN_LCDCK 3
#define EN_LBCK 4 /* Not on 1610/1710 */
/*#define EN_HSABCK 5*/
#define EN_APICK 6
#define EN_TIMCK 7
#define DMACK_REQ 8
#define EN_GPIOCK 9 /* Not on 1610/1710 */
/*#define EN_LBFREECK 10*/
#define EN_CKOUT_ARM 11
/* ARM_IDLECT3 bit shifts */
#define EN_OCPI_CK 0
#define EN_TC1_CK 2
#define EN_TC2_CK 4
/* DSP_IDLECT2 bit shifts (0,1,2 are same as for ARM_IDLECT2) */
#define EN_DSPTIMCK 5
/* Various register defines for clock controls scattered around OMAP chip */
#define USB_MCLK_EN_BIT 4 /* In ULPD_CLKC_CTRL */
#define USB_HOST_HHC_UHOST_EN 9 /* In MOD_CONF_CTRL_0 */
#define SWD_ULPD_PLL_CLK_REQ 1 /* In SWD_CLK_DIV_CTRL_SEL */
#define COM_ULPD_PLL_CLK_REQ 1 /* In COM_CLK_DIV_CTRL_SEL */
#define SWD_CLK_DIV_CTRL_SEL 0xfffe0874
#define COM_CLK_DIV_CTRL_SEL 0xfffe0878
#define SOFT_REQ_REG 0xfffe0834
#define SOFT_REQ_REG2 0xfffe0880
/*-------------------------------------------------------------------------
* Omap1 MPU rate table
*-------------------------------------------------------------------------*/
static struct mpu_rate rate_table[] = {
/* MPU MHz, xtal MHz, dpll1 MHz, CKCTL, DPLL_CTL
* NOTE: Comment order here is different from bits in CKCTL value:
* armdiv, dspdiv, dspmmu, tcdiv, perdiv, lcddiv
*/
#if defined(CONFIG_OMAP_ARM_216MHZ)
{ 216000000, 12000000, 216000000, 0x050d, 0x2910 }, /* 1/1/2/2/2/8 */
#endif
#if defined(CONFIG_OMAP_ARM_195MHZ)
{ 195000000, 13000000, 195000000, 0x050e, 0x2790 }, /* 1/1/2/2/4/8 */
#endif
#if defined(CONFIG_OMAP_ARM_192MHZ)
{ 192000000, 19200000, 192000000, 0x050f, 0x2510 }, /* 1/1/2/2/8/8 */
{ 192000000, 12000000, 192000000, 0x050f, 0x2810 }, /* 1/1/2/2/8/8 */
{ 96000000, 12000000, 192000000, 0x055f, 0x2810 }, /* 2/2/2/2/8/8 */
{ 48000000, 12000000, 192000000, 0x0baf, 0x2810 }, /* 4/4/4/8/8/8 */
{ 24000000, 12000000, 192000000, 0x0fff, 0x2810 }, /* 8/8/8/8/8/8 */
#endif
#if defined(CONFIG_OMAP_ARM_182MHZ)
{ 182000000, 13000000, 182000000, 0x050e, 0x2710 }, /* 1/1/2/2/4/8 */
#endif
#if defined(CONFIG_OMAP_ARM_168MHZ)
{ 168000000, 12000000, 168000000, 0x010f, 0x2710 }, /* 1/1/1/2/8/8 */
#endif
#if defined(CONFIG_OMAP_ARM_150MHZ)
{ 150000000, 12000000, 150000000, 0x010a, 0x2cb0 }, /* 1/1/1/2/4/4 */
#endif
#if defined(CONFIG_OMAP_ARM_120MHZ)
{ 120000000, 12000000, 120000000, 0x010a, 0x2510 }, /* 1/1/1/2/4/4 */
#endif
#if defined(CONFIG_OMAP_ARM_96MHZ)
{ 96000000, 12000000, 96000000, 0x0005, 0x2410 }, /* 1/1/1/1/2/2 */
#endif
#if defined(CONFIG_OMAP_ARM_60MHZ)
{ 60000000, 12000000, 60000000, 0x0005, 0x2290 }, /* 1/1/1/1/2/2 */
#endif
#if defined(CONFIG_OMAP_ARM_30MHZ)
{ 30000000, 12000000, 60000000, 0x0555, 0x2290 }, /* 2/2/2/2/2/2 */
#endif
{ 0, 0, 0, 0, 0 },
};
/*-------------------------------------------------------------------------
* Omap1 clocks
*-------------------------------------------------------------------------*/
static struct clk ck_ref = {
.name = "ck_ref",
.rate = 12000000,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
ALWAYS_ENABLED,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk ck_dpll1 = {
.name = "ck_dpll1",
.parent = &ck_ref,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_PROPAGATES | ALWAYS_ENABLED,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct arm_idlect1_clk ck_dpll1out = {
.clk = {
.name = "ck_dpll1out",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP16XX | CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_CKOUT_ARM,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 12,
};
static struct clk arm_ck = {
.name = "arm_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_CKCTL | RATE_PROPAGATES | ALWAYS_ENABLED,
.rate_offset = CKCTL_ARMDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct arm_idlect1_clk armper_ck = {
.clk = {
.name = "armper_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_CKCTL | CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_PERCK,
.rate_offset = CKCTL_PERDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 2,
};
static struct clk arm_gpio_ck = {
.name = "arm_gpio_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_GPIOCK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct arm_idlect1_clk armxor_ck = {
.clk = {
.name = "armxor_ck",
.parent = &ck_ref,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_XORPCK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 1,
};
static struct arm_idlect1_clk armtim_ck = {
.clk = {
.name = "armtim_ck",
.parent = &ck_ref,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_TIMCK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 9,
};
static struct arm_idlect1_clk armwdt_ck = {
.clk = {
.name = "armwdt_ck",
.parent = &ck_ref,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_WDTCK,
.recalc = &omap1_watchdog_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 0,
};
static struct clk arminth_ck16xx = {
.name = "arminth_ck",
.parent = &arm_ck,
.flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
.recalc = &followparent_recalc,
/* Note: On 16xx the frequency can be divided by 2 by programming
* ARM_CKCTL:ARM_INTHCK_SEL(14) to 1
*
* 1510 version is in TC clocks.
*/
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk dsp_ck = {
.name = "dsp_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_CKCTL,
.enable_reg = (void __iomem *)ARM_CKCTL,
.enable_bit = EN_DSPCK,
.rate_offset = CKCTL_DSPDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk dspmmu_ck = {
.name = "dspmmu_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_CKCTL | ALWAYS_ENABLED,
.rate_offset = CKCTL_DSPMMUDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk dspper_ck = {
.name = "dspper_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_CKCTL | VIRTUAL_IO_ADDRESS,
.enable_reg = (void __iomem *)DSP_IDLECT2,
.enable_bit = EN_PERCK,
.rate_offset = CKCTL_PERDIV_OFFSET,
.recalc = &omap1_ckctl_recalc_dsp_domain,
.set_rate = &omap1_clk_set_rate_dsp_domain,
.enable = &omap1_clk_enable_dsp_domain,
.disable = &omap1_clk_disable_dsp_domain,
};
static struct clk dspxor_ck = {
.name = "dspxor_ck",
.parent = &ck_ref,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
VIRTUAL_IO_ADDRESS,
.enable_reg = (void __iomem *)DSP_IDLECT2,
.enable_bit = EN_XORPCK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable_dsp_domain,
.disable = &omap1_clk_disable_dsp_domain,
};
static struct clk dsptim_ck = {
.name = "dsptim_ck",
.parent = &ck_ref,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
VIRTUAL_IO_ADDRESS,
.enable_reg = (void __iomem *)DSP_IDLECT2,
.enable_bit = EN_DSPTIMCK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable_dsp_domain,
.disable = &omap1_clk_disable_dsp_domain,
};
/* Tie ARM_IDLECT1:IDLIF_ARM to this logical clock structure */
static struct arm_idlect1_clk tc_ck = {
.clk = {
.name = "tc_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
CLOCK_IN_OMAP730 | RATE_CKCTL |
RATE_PROPAGATES | ALWAYS_ENABLED |
CLOCK_IDLE_CONTROL,
.rate_offset = CKCTL_TCDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 6,
};
static struct clk arminth_ck1510 = {
.name = "arminth_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP1510 | ALWAYS_ENABLED,
.recalc = &followparent_recalc,
/* Note: On 1510 the frequency follows TC_CK
*
* 16xx version is in MPU clocks.
*/
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk tipb_ck = {
/* No-idle controlled by "tc_ck" */
.name = "tibp_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP1510 | ALWAYS_ENABLED,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk l3_ocpi_ck = {
/* No-idle controlled by "tc_ck" */
.name = "l3_ocpi_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP16XX,
.enable_reg = (void __iomem *)ARM_IDLECT3,
.enable_bit = EN_OCPI_CK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk tc1_ck = {
.name = "tc1_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP16XX,
.enable_reg = (void __iomem *)ARM_IDLECT3,
.enable_bit = EN_TC1_CK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk tc2_ck = {
.name = "tc2_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP16XX,
.enable_reg = (void __iomem *)ARM_IDLECT3,
.enable_bit = EN_TC2_CK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk dma_ck = {
/* No-idle controlled by "tc_ck" */
.name = "dma_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
ALWAYS_ENABLED,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk dma_lcdfree_ck = {
.name = "dma_lcdfree_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct arm_idlect1_clk api_ck = {
.clk = {
.name = "api_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_APICK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 8,
};
static struct arm_idlect1_clk lb_ck = {
.clk = {
.name = "lb_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_LBCK,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 4,
};
static struct clk rhea1_ck = {
.name = "rhea1_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk rhea2_ck = {
.name = "rhea2_ck",
.parent = &tc_ck.clk,
.flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED,
.recalc = &followparent_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk lcd_ck_16xx = {
.name = "lcd_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP730 | RATE_CKCTL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_LCDCK,
.rate_offset = CKCTL_LCDDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct arm_idlect1_clk lcd_ck_1510 = {
.clk = {
.name = "lcd_ck",
.parent = &ck_dpll1,
.flags = CLOCK_IN_OMAP1510 | RATE_CKCTL |
CLOCK_IDLE_CONTROL,
.enable_reg = (void __iomem *)ARM_IDLECT2,
.enable_bit = EN_LCDCK,
.rate_offset = CKCTL_LCDDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
},
.idlect_shift = 3,
};
static struct clk uart1_1510 = {
.name = "uart1_ck",
/* Direct from ULPD, no real parent */
.parent = &armper_ck.clk,
.rate = 12000000,
.flags = CLOCK_IN_OMAP1510 | ENABLE_REG_32BIT |
ALWAYS_ENABLED | CLOCK_NO_IDLE_PARENT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = 29, /* Chooses between 12MHz and 48MHz */
.set_rate = &omap1_set_uart_rate,
.recalc = &omap1_uart_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct uart_clk uart1_16xx = {
.clk = {
.name = "uart1_ck",
/* Direct from ULPD, no real parent */
.parent = &armper_ck.clk,
.rate = 48000000,
.flags = CLOCK_IN_OMAP16XX | RATE_FIXED |
ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = 29,
.enable = &omap1_clk_enable_uart_functional,
.disable = &omap1_clk_disable_uart_functional,
},
.sysc_addr = 0xfffb0054,
};
static struct clk uart2_ck = {
.name = "uart2_ck",
/* Direct from ULPD, no real parent */
.parent = &armper_ck.clk,
.rate = 12000000,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
ENABLE_REG_32BIT | ALWAYS_ENABLED |
CLOCK_NO_IDLE_PARENT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = 30, /* Chooses between 12MHz and 48MHz */
.set_rate = &omap1_set_uart_rate,
.recalc = &omap1_uart_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk uart3_1510 = {
.name = "uart3_ck",
/* Direct from ULPD, no real parent */
.parent = &armper_ck.clk,
.rate = 12000000,
.flags = CLOCK_IN_OMAP1510 | ENABLE_REG_32BIT |
ALWAYS_ENABLED | CLOCK_NO_IDLE_PARENT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = 31, /* Chooses between 12MHz and 48MHz */
.set_rate = &omap1_set_uart_rate,
.recalc = &omap1_uart_recalc,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct uart_clk uart3_16xx = {
.clk = {
.name = "uart3_ck",
/* Direct from ULPD, no real parent */
.parent = &armper_ck.clk,
.rate = 48000000,
.flags = CLOCK_IN_OMAP16XX | RATE_FIXED |
ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = 31,
.enable = &omap1_clk_enable_uart_functional,
.disable = &omap1_clk_disable_uart_functional,
},
.sysc_addr = 0xfffb9854,
};
static struct clk usb_clko = { /* 6 MHz output on W4_USB_CLKO */
.name = "usb_clko",
/* Direct from ULPD, no parent */
.rate = 6000000,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_FIXED | ENABLE_REG_32BIT,
.enable_reg = (void __iomem *)ULPD_CLOCK_CTRL,
.enable_bit = USB_MCLK_EN_BIT,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk usb_hhc_ck1510 = {
.name = "usb_hhc_ck",
/* Direct from ULPD, no parent */
.rate = 48000000, /* Actually 2 clocks, 12MHz and 48MHz */
.flags = CLOCK_IN_OMAP1510 |
RATE_FIXED | ENABLE_REG_32BIT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = USB_HOST_HHC_UHOST_EN,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk usb_hhc_ck16xx = {
.name = "usb_hhc_ck",
/* Direct from ULPD, no parent */
.rate = 48000000,
/* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */
.flags = CLOCK_IN_OMAP16XX |
RATE_FIXED | ENABLE_REG_32BIT,
.enable_reg = (void __iomem *)OTG_BASE + 0x08 /* OTG_SYSCON_2 */,
.enable_bit = 8 /* UHOST_EN */,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk usb_dc_ck = {
.name = "usb_dc_ck",
/* Direct from ULPD, no parent */
.rate = 48000000,
.flags = CLOCK_IN_OMAP16XX | RATE_FIXED,
.enable_reg = (void __iomem *)SOFT_REQ_REG,
.enable_bit = 4,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk mclk_1510 = {
.name = "mclk",
/* Direct from ULPD, no parent. May be enabled by ext hardware. */
.rate = 12000000,
.flags = CLOCK_IN_OMAP1510 | RATE_FIXED,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk mclk_16xx = {
.name = "mclk",
/* Direct from ULPD, no parent. May be enabled by ext hardware. */
.flags = CLOCK_IN_OMAP16XX,
.enable_reg = (void __iomem *)COM_CLK_DIV_CTRL_SEL,
.enable_bit = COM_ULPD_PLL_CLK_REQ,
.set_rate = &omap1_set_ext_clk_rate,
.round_rate = &omap1_round_ext_clk_rate,
.init = &omap1_init_ext_clk,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk bclk_1510 = {
.name = "bclk",
/* Direct from ULPD, no parent. May be enabled by ext hardware. */
.rate = 12000000,
.flags = CLOCK_IN_OMAP1510 | RATE_FIXED,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk bclk_16xx = {
.name = "bclk",
/* Direct from ULPD, no parent. May be enabled by ext hardware. */
.flags = CLOCK_IN_OMAP16XX,
.enable_reg = (void __iomem *)SWD_CLK_DIV_CTRL_SEL,
.enable_bit = SWD_ULPD_PLL_CLK_REQ,
.set_rate = &omap1_set_ext_clk_rate,
.round_rate = &omap1_round_ext_clk_rate,
.init = &omap1_init_ext_clk,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk mmc1_ck = {
.name = "mmc1_ck",
/* Functional clock is direct from ULPD, interface clock is ARMPER */
.parent = &armper_ck.clk,
.rate = 48000000,
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = 23,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk mmc2_ck = {
.name = "mmc2_ck",
/* Functional clock is direct from ULPD, interface clock is ARMPER */
.parent = &armper_ck.clk,
.rate = 48000000,
.flags = CLOCK_IN_OMAP16XX |
RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
.enable_reg = (void __iomem *)MOD_CONF_CTRL_0,
.enable_bit = 20,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk virtual_ck_mpu = {
.name = "mpu",
.flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX |
VIRTUAL_CLOCK | ALWAYS_ENABLED,
.parent = &arm_ck, /* Is smarter alias for */
.recalc = &followparent_recalc,
.set_rate = &omap1_select_table_rate,
.round_rate = &omap1_round_to_table_rate,
.enable = &omap1_clk_enable,
.disable = &omap1_clk_disable,
};
static struct clk * onchip_clks[] = {
/* non-ULPD clocks */
&ck_ref,
&ck_dpll1,
/* CK_GEN1 clocks */
&ck_dpll1out.clk,
&arm_ck,
&armper_ck.clk,
&arm_gpio_ck,
&armxor_ck.clk,
&armtim_ck.clk,
&armwdt_ck.clk,
&arminth_ck1510, &arminth_ck16xx,
/* CK_GEN2 clocks */
&dsp_ck,
&dspmmu_ck,
&dspper_ck,
&dspxor_ck,
&dsptim_ck,
/* CK_GEN3 clocks */
&tc_ck.clk,
&tipb_ck,
&l3_ocpi_ck,
&tc1_ck,
&tc2_ck,
&dma_ck,
&dma_lcdfree_ck,
&api_ck.clk,
&lb_ck.clk,
&rhea1_ck,
&rhea2_ck,
&lcd_ck_16xx,
&lcd_ck_1510.clk,
/* ULPD clocks */
&uart1_1510,
&uart1_16xx.clk,
&uart2_ck,
&uart3_1510,
&uart3_16xx.clk,
&usb_clko,
&usb_hhc_ck1510, &usb_hhc_ck16xx,
&usb_dc_ck,
&mclk_1510, &mclk_16xx,
&bclk_1510, &bclk_16xx,
&mmc1_ck,
&mmc2_ck,
/* Virtual clocks */
&virtual_ck_mpu,
};
#endif

221
arch/arm/mach-omap1/devices.c
View file

@ -25,56 +25,7 @@
#include <asm/arch/mux.h>
#include <asm/arch/gpio.h>
static void omap_nop_release(struct device *dev)
{
/* Nothing */
}
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
#define OMAP_I2C_BASE 0xfffb3800
static struct resource i2c_resources[] = {
{
.start = OMAP_I2C_BASE,
.end = OMAP_I2C_BASE + 0x3f,
.flags = IORESOURCE_MEM,
},
{
.start = INT_I2C,
.flags = IORESOURCE_IRQ,
},
};
/* DMA not used; works around erratum writing to non-empty i2c fifo */
static struct platform_device omap_i2c_device = {
.name = "i2c_omap",
.id = -1,
.dev = {
.release = omap_nop_release,
},
.num_resources = ARRAY_SIZE(i2c_resources),
.resource = i2c_resources,
};
static void omap_init_i2c(void)
{
/* FIXME define and use a boot tag, in case of boards that
* either don't wire up I2C, or chips that mux it differently...
* it can include clocking and address info, maybe more.
*/
omap_cfg_reg(I2C_SCL);
omap_cfg_reg(I2C_SDA);
(void) platform_device_register(&omap_i2c_device);
}
#else
static inline void omap_init_i2c(void) {}
#endif
extern void omap_nop_release(struct device *dev);
/*-------------------------------------------------------------------------*/
@ -110,137 +61,6 @@ static inline void omap_init_irda(void) {}
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
#define OMAP_MMC1_BASE 0xfffb7800
#define OMAP_MMC2_BASE 0xfffb7c00 /* omap16xx only */
static struct omap_mmc_conf mmc1_conf;
static u64 mmc1_dmamask = 0xffffffff;
static struct resource mmc1_resources[] = {
{
.start = IO_ADDRESS(OMAP_MMC1_BASE),
.end = IO_ADDRESS(OMAP_MMC1_BASE) + 0x7f,
.flags = IORESOURCE_MEM,
},
{
.start = INT_MMC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mmc_omap_device1 = {
.name = "mmci-omap",
.id = 1,
.dev = {
.release = omap_nop_release,
.dma_mask = &mmc1_dmamask,
.platform_data = &mmc1_conf,
},
.num_resources = ARRAY_SIZE(mmc1_resources),
.resource = mmc1_resources,
};
#ifdef CONFIG_ARCH_OMAP16XX
static struct omap_mmc_conf mmc2_conf;
static u64 mmc2_dmamask = 0xffffffff;
static struct resource mmc2_resources[] = {
{
.start = IO_ADDRESS(OMAP_MMC2_BASE),
.end = IO_ADDRESS(OMAP_MMC2_BASE) + 0x7f,
.flags = IORESOURCE_MEM,
},
{
.start = INT_1610_MMC2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mmc_omap_device2 = {
.name = "mmci-omap",
.id = 2,
.dev = {
.release = omap_nop_release,
.dma_mask = &mmc2_dmamask,
.platform_data = &mmc2_conf,
},
.num_resources = ARRAY_SIZE(mmc2_resources),
.resource = mmc2_resources,
};
#endif
static void __init omap_init_mmc(void)
{
const struct omap_mmc_config *mmc_conf;
const struct omap_mmc_conf *mmc;
/* NOTE: assumes MMC was never (wrongly) enabled */
mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
if (!mmc_conf)
return;
/* block 1 is always available and has just one pinout option */
mmc = &mmc_conf->mmc[0];
if (mmc->enabled) {
omap_cfg_reg(MMC_CMD);
omap_cfg_reg(MMC_CLK);
omap_cfg_reg(MMC_DAT0);
if (cpu_is_omap1710()) {
omap_cfg_reg(M15_1710_MMC_CLKI);
omap_cfg_reg(P19_1710_MMC_CMDDIR);
omap_cfg_reg(P20_1710_MMC_DATDIR0);
}
if (mmc->wire4) {
omap_cfg_reg(MMC_DAT1);
/* NOTE: DAT2 can be on W10 (here) or M15 */
if (!mmc->nomux)
omap_cfg_reg(MMC_DAT2);
omap_cfg_reg(MMC_DAT3);
}
mmc1_conf = *mmc;
(void) platform_device_register(&mmc_omap_device1);
}
#ifdef CONFIG_ARCH_OMAP16XX
/* block 2 is on newer chips, and has many pinout options */
mmc = &mmc_conf->mmc[1];
if (mmc->enabled) {
if (!mmc->nomux) {
omap_cfg_reg(Y8_1610_MMC2_CMD);
omap_cfg_reg(Y10_1610_MMC2_CLK);
omap_cfg_reg(R18_1610_MMC2_CLKIN);
omap_cfg_reg(W8_1610_MMC2_DAT0);
if (mmc->wire4) {
omap_cfg_reg(V8_1610_MMC2_DAT1);
omap_cfg_reg(W15_1610_MMC2_DAT2);
omap_cfg_reg(R10_1610_MMC2_DAT3);
}
/* These are needed for the level shifter */
omap_cfg_reg(V9_1610_MMC2_CMDDIR);
omap_cfg_reg(V5_1610_MMC2_DATDIR0);
omap_cfg_reg(W19_1610_MMC2_DATDIR1);
}
/* Feedback clock must be set on OMAP-1710 MMC2 */
if (cpu_is_omap1710())
omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
MOD_CONF_CTRL_1);
mmc2_conf = *mmc;
(void) platform_device_register(&mmc_omap_device2);
}
#endif
return;
}
#else
static inline void omap_init_mmc(void) {}
#endif
#if defined(CONFIG_OMAP_RTC) || defined(CONFIG_OMAP_RTC)
#define OMAP_RTC_BASE 0xfffb4800
@ -279,38 +99,6 @@ static void omap_init_rtc(void)
static inline void omap_init_rtc(void) {}
#endif
/*-------------------------------------------------------------------------*/
#if defined(CONFIG_OMAP16XX_WATCHDOG) || defined(CONFIG_OMAP16XX_WATCHDOG_MODULE)
#define OMAP_WDT_BASE 0xfffeb000
static struct resource wdt_resources[] = {
{
.start = OMAP_WDT_BASE,
.end = OMAP_WDT_BASE + 0x4f,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device omap_wdt_device = {
.name = "omap1610_wdt",
.id = -1,
.dev = {
.release = omap_nop_release,
},
.num_resources = ARRAY_SIZE(wdt_resources),
.resource = wdt_resources,
};
static void omap_init_wdt(void)
{
(void) platform_device_register(&omap_wdt_device);
}
#else
static inline void omap_init_wdt(void) {}
#endif
/*-------------------------------------------------------------------------*/
@ -334,18 +122,15 @@ static inline void omap_init_wdt(void) {}
* may be handled by the boot loader, and drivers should expect it will
* normally have been done by the time they're probed.
*/
static int __init omap_init_devices(void)
static int __init omap1_init_devices(void)
{
/* please keep these calls, and their implementations above,
* in alphabetical order so they're easier to sort through.
*/
omap_init_i2c();
omap_init_irda();
omap_init_mmc();
omap_init_rtc();
omap_init_wdt();
return 0;
}
arch_initcall(omap_init_devices);
arch_initcall(omap1_init_devices);

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