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Merge branch 'tracing/ftrace'; commit 'v2.6.29-rc6' into tracing/core

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Ingo Molnar 2009-02-24 18:22:39 +01:00
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2
Documentation/DocBook/Makefile
View file

@ -6,7 +6,7 @@
# To add a new book the only step required is to add the book to the
# list of DOCBOOKS.
DOCBOOKS := z8530book.xml mcabook.xml \
DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \
kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
procfs-guide.xml writing_usb_driver.xml networking.xml \
kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \

418
Documentation/DocBook/device-drivers.tmpl Normal file
View file

@ -0,0 +1,418 @@
<?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" []>
<book id="LinuxDriversAPI">
<bookinfo>
<title>Linux Device Drivers</title>
<legalnotice>
<para>
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
</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="Basics">
<title>Driver Basics</title>
<sect1><title>Driver Entry and Exit points</title>
!Iinclude/linux/init.h
</sect1>
<sect1><title>Atomic and pointer manipulation</title>
!Iarch/x86/include/asm/atomic_32.h
!Iarch/x86/include/asm/unaligned.h
</sect1>
<sect1><title>Delaying, scheduling, and timer routines</title>
!Iinclude/linux/sched.h
!Ekernel/sched.c
!Ekernel/timer.c
</sect1>
<sect1><title>High-resolution timers</title>
!Iinclude/linux/ktime.h
!Iinclude/linux/hrtimer.h
!Ekernel/hrtimer.c
</sect1>
<sect1><title>Workqueues and Kevents</title>
!Ekernel/workqueue.c
</sect1>
<sect1><title>Internal Functions</title>
!Ikernel/exit.c
!Ikernel/signal.c
!Iinclude/linux/kthread.h
!Ekernel/kthread.c
</sect1>
<sect1><title>Kernel objects manipulation</title>
<!--
X!Iinclude/linux/kobject.h
-->
!Elib/kobject.c
</sect1>
<sect1><title>Kernel utility functions</title>
!Iinclude/linux/kernel.h
!Ekernel/printk.c
!Ekernel/panic.c
!Ekernel/sys.c
!Ekernel/rcupdate.c
</sect1>
<sect1><title>Device Resource Management</title>
!Edrivers/base/devres.c
</sect1>
</chapter>
<chapter id="devdrivers">
<title>Device drivers infrastructure</title>
<sect1><title>Device Drivers Base</title>
<!--
X!Iinclude/linux/device.h
-->
!Edrivers/base/driver.c
!Edrivers/base/core.c
!Edrivers/base/class.c
!Edrivers/base/firmware_class.c
!Edrivers/base/transport_class.c
<!-- Cannot be included, because
attribute_container_add_class_device_adapter
and attribute_container_classdev_to_container
exceed allowed 44 characters maximum
X!Edrivers/base/attribute_container.c
-->
!Edrivers/base/sys.c
<!--
X!Edrivers/base/interface.c
-->
!Edrivers/base/platform.c
!Edrivers/base/bus.c
</sect1>
<sect1><title>Device Drivers Power Management</title>
!Edrivers/base/power/main.c
</sect1>
<sect1><title>Device Drivers ACPI Support</title>
<!-- Internal functions only
X!Edrivers/acpi/sleep/main.c
X!Edrivers/acpi/sleep/wakeup.c
X!Edrivers/acpi/motherboard.c
X!Edrivers/acpi/bus.c
-->
!Edrivers/acpi/scan.c
!Idrivers/acpi/scan.c
<!-- No correct structured comments
X!Edrivers/acpi/pci_bind.c
-->
</sect1>
<sect1><title>Device drivers PnP support</title>
!Idrivers/pnp/core.c
<!-- No correct structured comments
X!Edrivers/pnp/system.c
-->
!Edrivers/pnp/card.c
!Idrivers/pnp/driver.c
!Edrivers/pnp/manager.c
!Edrivers/pnp/support.c
</sect1>
<sect1><title>Userspace IO devices</title>
!Edrivers/uio/uio.c
!Iinclude/linux/uio_driver.h
</sect1>
</chapter>
<chapter id="parportdev">
<title>Parallel Port Devices</title>
!Iinclude/linux/parport.h
!Edrivers/parport/ieee1284.c
!Edrivers/parport/share.c
!Idrivers/parport/daisy.c
</chapter>
<chapter id="message_devices">
<title>Message-based devices</title>
<sect1><title>Fusion message devices</title>
!Edrivers/message/fusion/mptbase.c
!Idrivers/message/fusion/mptbase.c
!Edrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptctl.c
!Idrivers/message/fusion/mptspi.c
!Idrivers/message/fusion/mptfc.c
!Idrivers/message/fusion/mptlan.c
</sect1>
<sect1><title>I2O message devices</title>
!Iinclude/linux/i2o.h
!Idrivers/message/i2o/core.h
!Edrivers/message/i2o/iop.c
!Idrivers/message/i2o/iop.c
!Idrivers/message/i2o/config-osm.c
!Edrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/bus-osm.c
!Edrivers/message/i2o/device.c
!Idrivers/message/i2o/device.c
!Idrivers/message/i2o/driver.c
!Idrivers/message/i2o/pci.c
!Idrivers/message/i2o/i2o_block.c
!Idrivers/message/i2o/i2o_scsi.c
!Idrivers/message/i2o/i2o_proc.c
</sect1>
</chapter>
<chapter id="snddev">
<title>Sound Devices</title>
!Iinclude/sound/core.h
!Esound/sound_core.c
!Iinclude/sound/pcm.h
!Esound/core/pcm.c
!Esound/core/device.c
!Esound/core/info.c
!Esound/core/rawmidi.c
!Esound/core/sound.c
!Esound/core/memory.c
!Esound/core/pcm_memory.c
!Esound/core/init.c
!Esound/core/isadma.c
!Esound/core/control.c
!Esound/core/pcm_lib.c
!Esound/core/hwdep.c
!Esound/core/pcm_native.c
!Esound/core/memalloc.c
<!-- FIXME: Removed for now since no structured comments in source
X!Isound/sound_firmware.c
-->
</chapter>
<chapter id="uart16x50">
<title>16x50 UART Driver</title>
!Iinclude/linux/serial_core.h
!Edrivers/serial/serial_core.c
!Edrivers/serial/8250.c
</chapter>
<chapter id="fbdev">
<title>Frame Buffer Library</title>
<para>
The frame buffer drivers depend heavily on four data structures.
These structures are declared in include/linux/fb.h. They are
fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs.
The last three can be made available to and from userland.
</para>
<para>
fb_info defines the current state of a particular video card.
Inside fb_info, there exists a fb_ops structure which is a
collection of needed functions to make fbdev and fbcon work.
fb_info is only visible to the kernel.
</para>
<para>
fb_var_screeninfo is used to describe the features of a video card
that are user defined. With fb_var_screeninfo, things such as
depth and the resolution may be defined.
</para>
<para>
The next structure is fb_fix_screeninfo. This defines the
properties of a card that are created when a mode is set and can't
be changed otherwise. A good example of this is the start of the
frame buffer memory. This "locks" the address of the frame buffer
memory, so that it cannot be changed or moved.
</para>
<para>
The last structure is fb_monospecs. In the old API, there was
little importance for fb_monospecs. This allowed for forbidden things
such as setting a mode of 800x600 on a fix frequency monitor. With
the new API, fb_monospecs prevents such things, and if used
correctly, can prevent a monitor from being cooked. fb_monospecs
will not be useful until kernels 2.5.x.
</para>
<sect1><title>Frame Buffer Memory</title>
!Edrivers/video/fbmem.c
</sect1>
<!--
<sect1><title>Frame Buffer Console</title>
X!Edrivers/video/console/fbcon.c
</sect1>
-->
<sect1><title>Frame Buffer Colormap</title>
!Edrivers/video/fbcmap.c
</sect1>
<!-- FIXME:
drivers/video/fbgen.c has no docs, which stuffs up the sgml. Comment
out until somebody adds docs. KAO
<sect1><title>Frame Buffer Generic Functions</title>
X!Idrivers/video/fbgen.c
</sect1>
KAO -->
<sect1><title>Frame Buffer Video Mode Database</title>
!Idrivers/video/modedb.c
!Edrivers/video/modedb.c
</sect1>
<sect1><title>Frame Buffer Macintosh Video Mode Database</title>
!Edrivers/video/macmodes.c
</sect1>
<sect1><title>Frame Buffer Fonts</title>
<para>
Refer to the file drivers/video/console/fonts.c for more information.
</para>
<!-- FIXME: Removed for now since no structured comments in source
X!Idrivers/video/console/fonts.c
-->
</sect1>
</chapter>
<chapter id="input_subsystem">
<title>Input Subsystem</title>
!Iinclude/linux/input.h
!Edrivers/input/input.c
!Edrivers/input/ff-core.c
!Edrivers/input/ff-memless.c
</chapter>
<chapter id="spi">
<title>Serial Peripheral Interface (SPI)</title>
<para>
SPI is the "Serial Peripheral Interface", widely used with
embedded systems because it is a simple and efficient
interface: basically a multiplexed shift register.
Its three signal wires hold a clock (SCK, often in the range
of 1-20 MHz), a "Master Out, Slave In" (MOSI) data line, and
a "Master In, Slave Out" (MISO) data line.
SPI is a full duplex protocol; for each bit shifted out the
MOSI line (one per clock) another is shifted in on the MISO line.
Those bits are assembled into words of various sizes on the
way to and from system memory.
An additional chipselect line is usually active-low (nCS);
four signals are normally used for each peripheral, plus
sometimes an interrupt.
</para>
<para>
The SPI bus facilities listed here provide a generalized
interface to declare SPI busses and devices, manage them
according to the standard Linux driver model, and perform
input/output operations.
At this time, only "master" side interfaces are supported,
where Linux talks to SPI peripherals and does not implement
such a peripheral itself.
(Interfaces to support implementing SPI slaves would
necessarily look different.)
</para>
<para>
The programming interface is structured around two kinds of driver,
and two kinds of device.
A "Controller Driver" abstracts the controller hardware, which may
be as simple as a set of GPIO pins or as complex as a pair of FIFOs
connected to dual DMA engines on the other side of the SPI shift
register (maximizing throughput). Such drivers bridge between
whatever bus they sit on (often the platform bus) and SPI, and
expose the SPI side of their device as a
<structname>struct spi_master</structname>.
SPI devices are children of that master, represented as a
<structname>struct spi_device</structname> and manufactured from
<structname>struct spi_board_info</structname> descriptors which
are usually provided by board-specific initialization code.
A <structname>struct spi_driver</structname> is called a
"Protocol Driver", and is bound to a spi_device using normal
driver model calls.
</para>
<para>
The I/O model is a set of queued messages. Protocol drivers
submit one or more <structname>struct spi_message</structname>
objects, which are processed and completed asynchronously.
(There are synchronous wrappers, however.) Messages are
built from one or more <structname>struct spi_transfer</structname>
objects, each of which wraps a full duplex SPI transfer.
A variety of protocol tweaking options are needed, because
different chips adopt very different policies for how they
use the bits transferred with SPI.
</para>
!Iinclude/linux/spi/spi.h
!Fdrivers/spi/spi.c spi_register_board_info
!Edrivers/spi/spi.c
</chapter>
<chapter id="i2c">
<title>I<superscript>2</superscript>C and SMBus Subsystem</title>
<para>
I<superscript>2</superscript>C (or without fancy typography, "I2C")
is an acronym for the "Inter-IC" bus, a simple bus protocol which is
widely used where low data rate communications suffice.
Since it's also a licensed trademark, some vendors use another
name (such as "Two-Wire Interface", TWI) for the same bus.
I2C only needs two signals (SCL for clock, SDA for data), conserving
board real estate and minimizing signal quality issues.
Most I2C devices use seven bit addresses, and bus speeds of up
to 400 kHz; there's a high speed extension (3.4 MHz) that's not yet
found wide use.
I2C is a multi-master bus; open drain signaling is used to
arbitrate between masters, as well as to handshake and to
synchronize clocks from slower clients.
</para>
<para>
The Linux I2C programming interfaces support only the master
side of bus interactions, not the slave side.
The programming interface is structured around two kinds of driver,
and two kinds of device.
An I2C "Adapter Driver" abstracts the controller hardware; it binds
to a physical device (perhaps a PCI device or platform_device) and
exposes a <structname>struct i2c_adapter</structname> representing
each I2C bus segment it manages.
On each I2C bus segment will be I2C devices represented by a
<structname>struct i2c_client</structname>. Those devices will
be bound to a <structname>struct i2c_driver</structname>,
which should follow the standard Linux driver model.
(At this writing, a legacy model is more widely used.)
There are functions to perform various I2C protocol operations; at
this writing all such functions are usable only from task context.
</para>
<para>
The System Management Bus (SMBus) is a sibling protocol. Most SMBus
systems are also I2C conformant. The electrical constraints are
tighter for SMBus, and it standardizes particular protocol messages
and idioms. Controllers that support I2C can also support most
SMBus operations, but SMBus controllers don't support all the protocol
options that an I2C controller will.
There are functions to perform various SMBus protocol operations,
either using I2C primitives or by issuing SMBus commands to
i2c_adapter devices which don't support those I2C operations.
</para>
!Iinclude/linux/i2c.h
!Fdrivers/i2c/i2c-boardinfo.c i2c_register_board_info
!Edrivers/i2c/i2c-core.c
</chapter>
</book>

377
Documentation/DocBook/kernel-api.tmpl
View file

@ -38,58 +38,6 @@
<toc></toc>
<chapter id="Basics">
<title>Driver Basics</title>
<sect1><title>Driver Entry and Exit points</title>
!Iinclude/linux/init.h
</sect1>
<sect1><title>Atomic and pointer manipulation</title>
!Iarch/x86/include/asm/atomic_32.h
!Iarch/x86/include/asm/unaligned.h
</sect1>
<sect1><title>Delaying, scheduling, and timer routines</title>
!Iinclude/linux/sched.h
!Ekernel/sched.c
!Ekernel/timer.c
</sect1>
<sect1><title>High-resolution timers</title>
!Iinclude/linux/ktime.h
!Iinclude/linux/hrtimer.h
!Ekernel/hrtimer.c
</sect1>
<sect1><title>Workqueues and Kevents</title>
!Ekernel/workqueue.c
</sect1>
<sect1><title>Internal Functions</title>
!Ikernel/exit.c
!Ikernel/signal.c
!Iinclude/linux/kthread.h
!Ekernel/kthread.c
</sect1>
<sect1><title>Kernel objects manipulation</title>
<!--
X!Iinclude/linux/kobject.h
-->
!Elib/kobject.c
</sect1>
<sect1><title>Kernel utility functions</title>
!Iinclude/linux/kernel.h
!Ekernel/printk.c
!Ekernel/panic.c
!Ekernel/sys.c
!Ekernel/rcupdate.c
</sect1>
<sect1><title>Device Resource Management</title>
!Edrivers/base/devres.c
</sect1>
</chapter>
<chapter id="adt">
<title>Data Types</title>
<sect1><title>Doubly Linked Lists</title>
@ -298,62 +246,6 @@ X!Earch/x86/kernel/mca_32.c
!Ikernel/acct.c
</chapter>
<chapter id="devdrivers">
<title>Device drivers infrastructure</title>
<sect1><title>Device Drivers Base</title>
<!--
X!Iinclude/linux/device.h
-->
!Edrivers/base/driver.c
!Edrivers/base/core.c
!Edrivers/base/class.c
!Edrivers/base/firmware_class.c
!Edrivers/base/transport_class.c
<!-- Cannot be included, because
attribute_container_add_class_device_adapter
and attribute_container_classdev_to_container
exceed allowed 44 characters maximum
X!Edrivers/base/attribute_container.c
-->
!Edrivers/base/sys.c
<!--
X!Edrivers/base/interface.c
-->
!Edrivers/base/platform.c
!Edrivers/base/bus.c
</sect1>
<sect1><title>Device Drivers Power Management</title>
!Edrivers/base/power/main.c
</sect1>
<sect1><title>Device Drivers ACPI Support</title>
<!-- Internal functions only
X!Edrivers/acpi/sleep/main.c
X!Edrivers/acpi/sleep/wakeup.c
X!Edrivers/acpi/motherboard.c
X!Edrivers/acpi/bus.c
-->
!Edrivers/acpi/scan.c
!Idrivers/acpi/scan.c
<!-- No correct structured comments
X!Edrivers/acpi/pci_bind.c
-->
</sect1>
<sect1><title>Device drivers PnP support</title>
!Idrivers/pnp/core.c
<!-- No correct structured comments
X!Edrivers/pnp/system.c
-->
!Edrivers/pnp/card.c
!Idrivers/pnp/driver.c
!Edrivers/pnp/manager.c
!Edrivers/pnp/support.c
</sect1>
<sect1><title>Userspace IO devices</title>
!Edrivers/uio/uio.c
!Iinclude/linux/uio_driver.h
</sect1>
</chapter>
<chapter id="blkdev">
<title>Block Devices</title>
!Eblock/blk-core.c
@ -381,275 +273,6 @@ X!Edrivers/pnp/system.c
!Edrivers/char/misc.c
</chapter>
<chapter id="parportdev">
<title>Parallel Port Devices</title>
!Iinclude/linux/parport.h
!Edrivers/parport/ieee1284.c
!Edrivers/parport/share.c
!Idrivers/parport/daisy.c
</chapter>
<chapter id="message_devices">
<title>Message-based devices</title>
<sect1><title>Fusion message devices</title>
!Edrivers/message/fusion/mptbase.c
!Idrivers/message/fusion/mptbase.c
!Edrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptctl.c
!Idrivers/message/fusion/mptspi.c
!Idrivers/message/fusion/mptfc.c
!Idrivers/message/fusion/mptlan.c
</sect1>
<sect1><title>I2O message devices</title>
!Iinclude/linux/i2o.h
!Idrivers/message/i2o/core.h
!Edrivers/message/i2o/iop.c
!Idrivers/message/i2o/iop.c
!Idrivers/message/i2o/config-osm.c
!Edrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/bus-osm.c
!Edrivers/message/i2o/device.c
!Idrivers/message/i2o/device.c
!Idrivers/message/i2o/driver.c
!Idrivers/message/i2o/pci.c
!Idrivers/message/i2o/i2o_block.c
!Idrivers/message/i2o/i2o_scsi.c
!Idrivers/message/i2o/i2o_proc.c
</sect1>
</chapter>
<chapter id="snddev">
<title>Sound Devices</title>
!Iinclude/sound/core.h
!Esound/sound_core.c
!Iinclude/sound/pcm.h
!Esound/core/pcm.c
!Esound/core/device.c
!Esound/core/info.c
!Esound/core/rawmidi.c
!Esound/core/sound.c
!Esound/core/memory.c
!Esound/core/pcm_memory.c
!Esound/core/init.c
!Esound/core/isadma.c
!Esound/core/control.c
!Esound/core/pcm_lib.c
!Esound/core/hwdep.c
!Esound/core/pcm_native.c
!Esound/core/memalloc.c
<!-- FIXME: Removed for now since no structured comments in source
X!Isound/sound_firmware.c
-->
</chapter>
<chapter id="uart16x50">
<title>16x50 UART Driver</title>
!Iinclude/linux/serial_core.h
!Edrivers/serial/serial_core.c
!Edrivers/serial/8250.c
</chapter>
<chapter id="fbdev">
<title>Frame Buffer Library</title>
<para>
The frame buffer drivers depend heavily on four data structures.
These structures are declared in include/linux/fb.h. They are
fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs.
The last three can be made available to and from userland.
</para>
<para>
fb_info defines the current state of a particular video card.
Inside fb_info, there exists a fb_ops structure which is a
collection of needed functions to make fbdev and fbcon work.
fb_info is only visible to the kernel.
</para>
<para>
fb_var_screeninfo is used to describe the features of a video card
that are user defined. With fb_var_screeninfo, things such as
depth and the resolution may be defined.
</para>
<para>
The next structure is fb_fix_screeninfo. This defines the
properties of a card that are created when a mode is set and can't
be changed otherwise. A good example of this is the start of the
frame buffer memory. This "locks" the address of the frame buffer
memory, so that it cannot be changed or moved.
</para>
<para>
The last structure is fb_monospecs. In the old API, there was
little importance for fb_monospecs. This allowed for forbidden things
such as setting a mode of 800x600 on a fix frequency monitor. With
the new API, fb_monospecs prevents such things, and if used
correctly, can prevent a monitor from being cooked. fb_monospecs
will not be useful until kernels 2.5.x.
</para>
<sect1><title>Frame Buffer Memory</title>
!Edrivers/video/fbmem.c
</sect1>
<!--
<sect1><title>Frame Buffer Console</title>
X!Edrivers/video/console/fbcon.c
</sect1>
-->
<sect1><title>Frame Buffer Colormap</title>
!Edrivers/video/fbcmap.c
</sect1>
<!-- FIXME:
drivers/video/fbgen.c has no docs, which stuffs up the sgml. Comment
out until somebody adds docs. KAO
<sect1><title>Frame Buffer Generic Functions</title>
X!Idrivers/video/fbgen.c
</sect1>
KAO -->
<sect1><title>Frame Buffer Video Mode Database</title>
!Idrivers/video/modedb.c
!Edrivers/video/modedb.c
</sect1>
<sect1><title>Frame Buffer Macintosh Video Mode Database</title>
!Edrivers/video/macmodes.c
</sect1>
<sect1><title>Frame Buffer Fonts</title>
<para>
Refer to the file drivers/video/console/fonts.c for more information.
</para>
<!-- FIXME: Removed for now since no structured comments in source
X!Idrivers/video/console/fonts.c
-->
</sect1>
</chapter>
<chapter id="input_subsystem">
<title>Input Subsystem</title>
!Iinclude/linux/input.h
!Edrivers/input/input.c
!Edrivers/input/ff-core.c
!Edrivers/input/ff-memless.c
</chapter>
<chapter id="spi">
<title>Serial Peripheral Interface (SPI)</title>
<para>
SPI is the "Serial Peripheral Interface", widely used with
embedded systems because it is a simple and efficient
interface: basically a multiplexed shift register.
Its three signal wires hold a clock (SCK, often in the range
of 1-20 MHz), a "Master Out, Slave In" (MOSI) data line, and
a "Master In, Slave Out" (MISO) data line.
SPI is a full duplex protocol; for each bit shifted out the
MOSI line (one per clock) another is shifted in on the MISO line.
Those bits are assembled into words of various sizes on the
way to and from system memory.
An additional chipselect line is usually active-low (nCS);
four signals are normally used for each peripheral, plus
sometimes an interrupt.
</para>
<para>
The SPI bus facilities listed here provide a generalized
interface to declare SPI busses and devices, manage them
according to the standard Linux driver model, and perform
input/output operations.
At this time, only "master" side interfaces are supported,
where Linux talks to SPI peripherals and does not implement
such a peripheral itself.
(Interfaces to support implementing SPI slaves would
necessarily look different.)
</para>
<para>
The programming interface is structured around two kinds of driver,
and two kinds of device.
A "Controller Driver" abstracts the controller hardware, which may
be as simple as a set of GPIO pins or as complex as a pair of FIFOs
connected to dual DMA engines on the other side of the SPI shift
register (maximizing throughput). Such drivers bridge between
whatever bus they sit on (often the platform bus) and SPI, and
expose the SPI side of their device as a
<structname>struct spi_master</structname>.
SPI devices are children of that master, represented as a
<structname>struct spi_device</structname> and manufactured from
<structname>struct spi_board_info</structname> descriptors which
are usually provided by board-specific initialization code.
A <structname>struct spi_driver</structname> is called a
"Protocol Driver", and is bound to a spi_device using normal
driver model calls.
</para>
<para>
The I/O model is a set of queued messages. Protocol drivers
submit one or more <structname>struct spi_message</structname>
objects, which are processed and completed asynchronously.
(There are synchronous wrappers, however.) Messages are
built from one or more <structname>struct spi_transfer</structname>
objects, each of which wraps a full duplex SPI transfer.
A variety of protocol tweaking options are needed, because
different chips adopt very different policies for how they
use the bits transferred with SPI.
</para>
!Iinclude/linux/spi/spi.h
!Fdrivers/spi/spi.c spi_register_board_info
!Edrivers/spi/spi.c
</chapter>
<chapter id="i2c">
<title>I<superscript>2</superscript>C and SMBus Subsystem</title>
<para>
I<superscript>2</superscript>C (or without fancy typography, "I2C")
is an acronym for the "Inter-IC" bus, a simple bus protocol which is
widely used where low data rate communications suffice.
Since it's also a licensed trademark, some vendors use another
name (such as "Two-Wire Interface", TWI) for the same bus.
I2C only needs two signals (SCL for clock, SDA for data), conserving
board real estate and minimizing signal quality issues.
Most I2C devices use seven bit addresses, and bus speeds of up
to 400 kHz; there's a high speed extension (3.4 MHz) that's not yet
found wide use.
I2C is a multi-master bus; open drain signaling is used to
arbitrate between masters, as well as to handshake and to
synchronize clocks from slower clients.
</para>
<para>
The Linux I2C programming interfaces support only the master
side of bus interactions, not the slave side.
The programming interface is structured around two kinds of driver,
and two kinds of device.
An I2C "Adapter Driver" abstracts the controller hardware; it binds
to a physical device (perhaps a PCI device or platform_device) and
exposes a <structname>struct i2c_adapter</structname> representing
each I2C bus segment it manages.
On each I2C bus segment will be I2C devices represented by a
<structname>struct i2c_client</structname>. Those devices will
be bound to a <structname>struct i2c_driver</structname>,
which should follow the standard Linux driver model.
(At this writing, a legacy model is more widely used.)
There are functions to perform various I2C protocol operations; at
this writing all such functions are usable only from task context.
</para>
<para>
The System Management Bus (SMBus) is a sibling protocol. Most SMBus
systems are also I2C conformant. The electrical constraints are
tighter for SMBus, and it standardizes particular protocol messages
and idioms. Controllers that support I2C can also support most
SMBus operations, but SMBus controllers don't support all the protocol
options that an I2C controller will.
There are functions to perform various SMBus protocol operations,
either using I2C primitives or by issuing SMBus commands to
i2c_adapter devices which don't support those I2C operations.
</para>
!Iinclude/linux/i2c.h
!Fdrivers/i2c/i2c-boardinfo.c i2c_register_board_info
!Edrivers/i2c/i2c-core.c
</chapter>
<chapter id="clk">
<title>Clock Framework</title>

63
Documentation/cgroups/cpusets.txt
View file

@ -142,7 +142,7 @@ into the rest of the kernel, none in performance critical paths:
- in fork and exit, to attach and detach a task from its cpuset.
- in sched_setaffinity, to mask the requested CPUs by what's
allowed in that tasks cpuset.
- in sched.c migrate_all_tasks(), to keep migrating tasks within
- in sched.c migrate_live_tasks(), to keep migrating tasks within
the CPUs allowed by their cpuset, if possible.
- in the mbind and set_mempolicy system calls, to mask the requested
Memory Nodes by what's allowed in that tasks cpuset.
@ -175,6 +175,10 @@ files describing that cpuset:
- mem_exclusive flag: is memory placement exclusive?
- mem_hardwall flag: is memory allocation hardwalled
- memory_pressure: measure of how much paging pressure in cpuset
- memory_spread_page flag: if set, spread page cache evenly on allowed nodes
- memory_spread_slab flag: if set, spread slab cache evenly on allowed nodes
- sched_load_balance flag: if set, load balance within CPUs on that cpuset
- sched_relax_domain_level: the searching range when migrating tasks
In addition, the root cpuset only has the following file:
- memory_pressure_enabled flag: compute memory_pressure?
@ -252,7 +256,7 @@ is causing.
This is useful both on tightly managed systems running a wide mix of
submitted jobs, which may choose to terminate or re-prioritize jobs that
are trying to use more memory than allowed on the nodes assigned them,
are trying to use more memory than allowed on the nodes assigned to them,
and with tightly coupled, long running, massively parallel scientific
computing jobs that will dramatically fail to meet required performance
goals if they start to use more memory than allowed to them.
@ -378,7 +382,7 @@ as cpusets and sched_setaffinity.
The algorithmic cost of load balancing and its impact on key shared
kernel data structures such as the task list increases more than
linearly with the number of CPUs being balanced. So the scheduler
has support to partition the systems CPUs into a number of sched
has support to partition the systems CPUs into a number of sched
domains such that it only load balances within each sched domain.
Each sched domain covers some subset of the CPUs in the system;
no two sched domains overlap; some CPUs might not be in any sched
@ -485,17 +489,22 @@ of CPUs allowed to a cpuset having 'sched_load_balance' enabled.
The internal kernel cpuset to scheduler interface passes from the
cpuset code to the scheduler code a partition of the load balanced
CPUs in the system. This partition is a set of subsets (represented
as an array of cpumask_t) of CPUs, pairwise disjoint, that cover all
the CPUs that must be load balanced.
as an array of struct cpumask) of CPUs, pairwise disjoint, that cover
all the CPUs that must be load balanced.
Whenever the 'sched_load_balance' flag changes, or CPUs come or go
from a cpuset with this flag enabled, or a cpuset with this flag
enabled is removed, the cpuset code builds a new such partition and
passes it to the scheduler sched domain setup code, to have the sched
domains rebuilt as necessary.
The cpuset code builds a new such partition and passes it to the
scheduler sched domain setup code, to have the sched domains rebuilt
as necessary, whenever:
- the 'sched_load_balance' flag of a cpuset with non-empty CPUs changes,
- or CPUs come or go from a cpuset with this flag enabled,
- or 'sched_relax_domain_level' value of a cpuset with non-empty CPUs
and with this flag enabled changes,
- or a cpuset with non-empty CPUs and with this flag enabled is removed,
- or a cpu is offlined/onlined.
This partition exactly defines what sched domains the scheduler should
setup - one sched domain for each element (cpumask_t) in the partition.
setup - one sched domain for each element (struct cpumask) in the
partition.
The scheduler remembers the currently active sched domain partitions.
When the scheduler routine partition_sched_domains() is invoked from
@ -559,7 +568,7 @@ domain, the largest value among those is used. Be careful, if one
requests 0 and others are -1 then 0 is used.
Note that modifying this file will have both good and bad effects,
and whether it is acceptable or not will be depend on your situation.
and whether it is acceptable or not depends on your situation.
Don't modify this file if you are not sure.
If your situation is:
@ -600,19 +609,15 @@ to allocate a page of memory for that task.
If a cpuset has its 'cpus' modified, then each task in that cpuset
will have its allowed CPU placement changed immediately. Similarly,
if a tasks pid is written to a cpusets 'tasks' file, in either its
current cpuset or another cpuset, then its allowed CPU placement is
changed immediately. If such a task had been bound to some subset
of its cpuset using the sched_setaffinity() call, the task will be
allowed to run on any CPU allowed in its new cpuset, negating the
affect of the prior sched_setaffinity() call.
if a tasks pid is written to another cpusets 'tasks' file, then its
allowed CPU placement is changed immediately. If such a task had been
bound to some subset of its cpuset using the sched_setaffinity() call,
the task will be allowed to run on any CPU allowed in its new cpuset,
negating the effect of the prior sched_setaffinity() call.
In summary, the memory placement of a task whose cpuset is changed is
updated by the kernel, on the next allocation of a page for that task,
but the processor placement is not updated, until that tasks pid is
rewritten to the 'tasks' file of its cpuset. This is done to avoid
impacting the scheduler code in the kernel with a check for changes
in a tasks processor placement.
and the processor placement is updated immediately.
Normally, once a page is allocated (given a physical page
of main memory) then that page stays on whatever node it
@ -681,10 +686,14 @@ and then start a subshell 'sh' in that cpuset:
# The next line should display '/Charlie'
cat /proc/self/cpuset
In the future, a C library interface to cpusets will likely be
available. For now, the only way to query or modify cpusets is
via the cpuset file system, using the various cd, mkdir, echo, cat,
rmdir commands from the shell, or their equivalent from C.
There are ways to query or modify cpusets:
- via the cpuset file system directly, using the various cd, mkdir, echo,
cat, rmdir commands from the shell, or their equivalent from C.
- via the C library libcpuset.
- via the C library libcgroup.
(http://sourceforge.net/proects/libcg/)
- via the python application cset.
(http://developer.novell.com/wiki/index.php/Cpuset)
The sched_setaffinity calls can also be done at the shell prompt using
SGI's runon or Robert Love's taskset. The mbind and set_mempolicy
@ -756,7 +765,7 @@ mount -t cpuset X /dev/cpuset
is equivalent to
mount -t cgroup -ocpuset X /dev/cpuset
mount -t cgroup -ocpuset,noprefix X /dev/cpuset
echo "/sbin/cpuset_release_agent" > /dev/cpuset/release_agent
2.2 Adding/removing cpus

8
Documentation/driver-model/device.txt
View file

@ -127,9 +127,11 @@ void unlock_device(struct device * dev);
Attributes
~~~~~~~~~~
struct device_attribute {
struct attribute attr;
ssize_t (*show)(struct device * dev, char * buf, size_t count, loff_t off);
ssize_t (*store)(struct device * dev, const char * buf, size_t count, loff_t off);
struct attribute attr;
ssize_t (*show)(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
};
Attributes of devices can be exported via drivers using a simple

50
Documentation/filesystems/sysfs.txt
View file

@ -2,8 +2,10 @@
sysfs - _The_ filesystem for exporting kernel objects.
Patrick Mochel <mochel@osdl.org>
Mike Murphy <mamurph@cs.clemson.edu>
10 January 2003
Revised: 22 February 2009
Original: 10 January 2003
What it is:
@ -64,12 +66,13 @@ An attribute definition is simply:
struct attribute {
char * name;
struct module *owner;
mode_t mode;
};
int sysfs_create_file(struct kobject * kobj, struct attribute * attr);
void sysfs_remove_file(struct kobject * kobj, struct attribute * attr);
int sysfs_create_file(struct kobject * kobj, const struct attribute * attr);
void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr);
A bare attribute contains no means to read or write the value of the
@ -80,9 +83,11 @@ a specific object type.
For example, the driver model defines struct device_attribute like:
struct device_attribute {
struct attribute attr;
ssize_t (*show)(struct device * dev, char * buf);
ssize_t (*store)(struct device * dev, const char * buf);
struct attribute attr;
ssize_t (*show)(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
};
int device_create_file(struct device *, struct device_attribute *);
@ -90,12 +95,8 @@ void device_remove_file(struct device *, struct device_attribute *);
It also defines this helper for defining device attributes:
#define DEVICE_ATTR(_name, _mode, _show, _store) \
struct device_attribute dev_attr_##_name = { \
.attr = {.name = __stringify(_name) , .mode = _mode }, \
.show = _show, \
.store = _store, \
};
#define DEVICE_ATTR(_name, _mode, _show, _store) \
struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store)
For example, declaring
@ -107,9 +108,9 @@ static struct device_attribute dev_attr_foo = {
.attr = {
.name = "foo",
.mode = S_IWUSR | S_IRUGO,
.show = show_foo,
.store = store_foo,
},
.show = show_foo,
.store = store_foo,
};
@ -161,10 +162,12 @@ To read or write attributes, show() or store() methods must be
specified when declaring the attribute. The method types should be as
simple as those defined for device attributes:
ssize_t (*show)(struct device * dev, char * buf);
ssize_t (*store)(struct device * dev, const char * buf);
ssize_t (*show)(struct device * dev, struct device_attribute * attr,
char * buf);
ssize_t (*store)(struct device * dev, struct device_attribute * attr,
const char * buf);
IOW, they should take only an object and a buffer as parameters.
IOW, they should take only an object, an attribute, and a buffer as parameters.
sysfs allocates a buffer of size (PAGE_SIZE) and passes it to the
@ -299,14 +302,16 @@ The following interface layers currently exist in sysfs:
Structure:
struct device_attribute {
struct attribute attr;
ssize_t (*show)(struct device * dev, char * buf);
ssize_t (*store)(struct device * dev, const char * buf);
struct attribute attr;
ssize_t (*show)(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
};
Declaring:
DEVICE_ATTR(_name, _str, _mode, _show, _store);
DEVICE_ATTR(_name, _mode, _show, _store);
Creation/Removal:
@ -342,7 +347,8 @@ Structure:
struct driver_attribute {
struct attribute attr;
ssize_t (*show)(struct device_driver *, char * buf);
ssize_t (*store)(struct device_driver *, const char * buf);
ssize_t (*store)(struct device_driver *, const char * buf,
size_t count);
};
Declaring:

2
Documentation/kernel-parameters.txt
View file

@ -135,7 +135,7 @@ and is between 256 and 4096 characters. It is defined in the file
acpi= [HW,ACPI,X86-64,i386]
Advanced Configuration and Power Interface
Format: { force | off | ht | strict | noirq }
Format: { force | off | ht | strict | noirq | rsdt }
force -- enable ACPI if default was off
off -- disable ACPI if default was on
noirq -- do not use ACPI for IRQ routing

4
MAINTAINERS
View file

@ -3340,8 +3340,8 @@ P: Jeremy Fitzhardinge
M: jeremy@xensource.com
P: Chris Wright
M: chrisw@sous-sol.org
P: Zachary Amsden
M: zach@vmware.com
P: Alok Kataria
M: akataria@vmware.com
P: Rusty Russell
M: rusty@rustcorp.com.au
L: virtualization@lists.osdl.org

2
Makefile
View file

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 29
EXTRAVERSION = -rc5
EXTRAVERSION = -rc6
NAME = Erotic Pickled Herring
# *DOCUMENTATION*

2
README
View file

@ -188,7 +188,7 @@ CONFIGURING the kernel:
values to random values.
You can find more information on using the Linux kernel config tools
in Documentation/kbuild/make-configs.txt.
in Documentation/kbuild/kconfig.txt.
NOTES on "make config":
- having unnecessary drivers will make the kernel bigger, and can

7
arch/ia64/Kconfig
View file

@ -224,7 +224,11 @@ config IA64_HP_SIM
config IA64_XEN_GUEST
bool "Xen guest"
select SWIOTLB
depends on XEN
help
Build a kernel that runs on Xen guest domain. At this moment only
16KB page size in supported.
endchoice
@ -482,8 +486,7 @@ config HOLES_IN_ZONE
default y if VIRTUAL_MEM_MAP
config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool y
depends on NEED_MULTIPLE_NODES
def_bool NUMA && SPARSEMEM
config HAVE_ARCH_NODEDATA_EXTENSION
def_bool y

1601
arch/ia64/configs/xen_domu_defconfig Normal file
View file

File diff suppressed because it is too large Load diff

2
arch/ia64/include/asm/sn/bte.h
View file

@ -39,7 +39,7 @@
/* BTE status register only supports 16 bits for length field */
#define BTE_LEN_BITS (16)
#define BTE_LEN_MASK ((1 << BTE_LEN_BITS) - 1)
#define BTE_MAX_XFER ((1 << BTE_LEN_BITS) * L1_CACHE_BYTES)
#define BTE_MAX_XFER (BTE_LEN_MASK << L1_CACHE_SHIFT)
/* Define hardware */

5
arch/ia64/kernel/smpboot.c
View file

@ -736,14 +736,15 @@ int __cpu_disable(void)
return -EBUSY;
}
cpu_clear(cpu, cpu_online_map);
if (migrate_platform_irqs(cpu)) {
cpu_set(cpu, cpu_online_map);
return (-EBUSY);
return -EBUSY;
}
remove_siblinginfo(cpu);
fixup_irqs();
cpu_clear(cpu, cpu_online_map);
local_flush_tlb_all();
cpu_clear(cpu, cpu_callin_map);
return 0;

7
arch/ia64/sn/kernel/bte.c
View file

@ -97,9 +97,10 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
return BTE_SUCCESS;
}
BUG_ON((len & L1_CACHE_MASK) ||
(src & L1_CACHE_MASK) || (dest & L1_CACHE_MASK));
BUG_ON(!(len < ((BTE_LEN_MASK + 1) << L1_CACHE_SHIFT)));
BUG_ON(len & L1_CACHE_MASK);
BUG_ON(src & L1_CACHE_MASK);
BUG_ON(dest & L1_CACHE_MASK);
BUG_ON(len > BTE_MAX_XFER);
/*
* Start with interface corresponding to cpu number

3
arch/ia64/xen/Kconfig
View file

@ -8,8 +8,7 @@ config XEN
depends on PARAVIRT && MCKINLEY && IA64_PAGE_SIZE_16KB && EXPERIMENTAL
select XEN_XENCOMM
select NO_IDLE_HZ
# those are required to save/restore.
# followings are required to save/restore.
select ARCH_SUSPEND_POSSIBLE
select SUSPEND
select PM_SLEEP

4
arch/ia64/xen/xen_pv_ops.c
View file

@ -153,7 +153,7 @@ xen_post_smp_prepare_boot_cpu(void)
xen_setup_vcpu_info_placement();
}
static const struct pv_init_ops xen_init_ops __initdata = {
static const struct pv_init_ops xen_init_ops __initconst = {
.banner = xen_banner,
.reserve_memory = xen_reserve_memory,
@ -337,7 +337,7 @@ xen_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op);
}
static const struct pv_iosapic_ops xen_iosapic_ops __initdata = {
static const struct pv_iosapic_ops xen_iosapic_ops __initconst = {
.pcat_compat_init = xen_pcat_compat_init,
.__get_irq_chip = xen_iosapic_get_irq_chip,

16
arch/m68k/atari/ataints.c
View file

@ -187,8 +187,8 @@ __asm__ (__ALIGN_STR "\n" \
" jbra ret_from_interrupt\n" \
: : "i" (&kstat_cpu(0).irqs[n+8]), "i" (&irq_handler[n+8]), \
"n" (PT_OFF_SR), "n" (n), \
"i" (n & 8 ? (n & 16 ? &tt_mfp.int_mk_a : &mfp.int_mk_a) \
: (n & 16 ? &tt_mfp.int_mk_b : &mfp.int_mk_b)), \
"i" (n & 8 ? (n & 16 ? &tt_mfp.int_mk_a : &st_mfp.int_mk_a) \
: (n & 16 ? &tt_mfp.int_mk_b : &st_mfp.int_mk_b)), \
"m" (preempt_count()), "di" (HARDIRQ_OFFSET) \
); \
for (;;); /* fake noreturn */ \
@ -366,14 +366,14 @@ void __init atari_init_IRQ(void)
/* Initialize the MFP(s) */
#ifdef ATARI_USE_SOFTWARE_EOI
mfp.vec_adr = 0x48; /* Software EOI-Mode */
st_mfp.vec_adr = 0x48; /* Software EOI-Mode */
#else
mfp.vec_adr = 0x40; /* Automatic EOI-Mode */
st_mfp.vec_adr = 0x40; /* Automatic EOI-Mode */
#endif
mfp.int_en_a = 0x00; /* turn off MFP-Ints */
mfp.int_en_b = 0x00;
mfp.int_mk_a = 0xff; /* no Masking */
mfp.int_mk_b = 0xff;
st_mfp.int_en_a = 0x00; /* turn off MFP-Ints */
st_mfp.int_en_b = 0x00;
st_mfp.int_mk_a = 0xff; /* no Masking */
st_mfp.int_mk_b = 0xff;
if (ATARIHW_PRESENT(TT_MFP)) {
#ifdef ATARI_USE_SOFTWARE_EOI

4
arch/m68k/atari/atakeyb.c
View file

@ -609,10 +609,10 @@ int atari_keyb_init(void)
ACIA_RHTID : 0);
/* make sure the interrupt line is up */
} while ((mfp.par_dt_reg & 0x10) == 0);
} while ((st_mfp.par_dt_reg & 0x10) == 0);
/* enable ACIA Interrupts */
mfp.active_edge &= ~0x10;
st_mfp.active_edge &= ~0x10;
atari_turnon_irq(IRQ_MFP_ACIA);
ikbd_self_test = 1;

2
arch/m68k/atari/config.c
View file

@ -258,7 +258,7 @@ void __init config_atari(void)
printk("STND_SHIFTER ");
}
}
if (hwreg_present(&mfp.par_dt_reg)) {
if (hwreg_present(&st_mfp.par_dt_reg)) {
ATARIHW_SET(ST_MFP);
printk("ST_MFP ");
}

22
arch/m68k/atari/debug.c
View file

@ -34,9 +34,9 @@ static struct console atari_console_driver = {
static inline void ata_mfp_out(char c)
{
while (!(mfp.trn_stat & 0x80)) /* wait for tx buf empty */
while (!(st_mfp.trn_stat & 0x80)) /* wait for tx buf empty */
barrier();
mfp.usart_dta = c;
st_mfp.usart_dta = c;
}
static void atari_mfp_console_write(struct console *co, const char *str,
@ -91,7 +91,7 @@ static int ata_par_out(char c)
/* This a some-seconds timeout in case no printer is connected */
unsigned long i = loops_per_jiffy > 1 ? loops_per_jiffy : 10000000/HZ;
while ((mfp.par_dt_reg & 1) && --i) /* wait for BUSY == L */
while ((st_mfp.par_dt_reg & 1) && --i) /* wait for BUSY == L */
;
if (!i)
return 0;
@ -131,9 +131,9 @@ static void atari_par_console_write(struct console *co, const char *str,
#if 0
int atari_mfp_console_wait_key(struct console *co)
{
while (!(mfp.rcv_stat & 0x80)) /* wait for rx buf filled */
while (!(st_mfp.rcv_stat & 0x80)) /* wait for rx buf filled */
barrier();
return mfp.usart_dta;
return st_mfp.usart_dta;
}
int atari_scc_console_wait_key(struct console *co)
@ -175,12 +175,12 @@ static void __init atari_init_mfp_port(int cflag)
baud = B9600; /* use default 9600bps for non-implemented rates */
baud -= B1200; /* baud_table[] starts at 1200bps */
mfp.trn_stat &= ~0x01; /* disable TX */
mfp.usart_ctr = parity | csize | 0x88; /* 1:16 clk mode, 1 stop bit */
mfp.tim_ct_cd &= 0x70; /* stop timer D */
mfp.tim_dt_d = baud_table[baud];
mfp.tim_ct_cd |= 0x01; /* start timer D, 1:4 */
mfp.trn_stat |= 0x01; /* enable TX */
st_mfp.trn_stat &= ~0x01; /* disable TX */
st_mfp.usart_ctr = parity | csize | 0x88; /* 1:16 clk mode, 1 stop bit */
st_mfp.tim_ct_cd &= 0x70; /* stop timer D */
st_mfp.tim_dt_d = baud_table[baud];
st_mfp.tim_ct_cd |= 0x01; /* start timer D, 1:4 */
st_mfp.trn_stat |= 0x01; /* enable TX */
}
#define SCC_WRITE(reg, val) \

8
arch/m68k/atari/time.c
View file

@ -27,9 +27,9 @@ void __init
atari_sched_init(irq_handler_t timer_routine)
{
/* set Timer C data Register */
mfp.tim_dt_c = INT_TICKS;
st_mfp.tim_dt_c = INT_TICKS;
/* start timer C, div = 1:100 */
mfp.tim_ct_cd = (mfp.tim_ct_cd & 15) | 0x60;
st_mfp.tim_ct_cd = (st_mfp.tim_ct_cd & 15) | 0x60;
/* install interrupt service routine for MFP Timer C */
if (request_irq(IRQ_MFP_TIMC, timer_routine, IRQ_TYPE_SLOW,
"timer", timer_routine))
@ -46,11 +46,11 @@ unsigned long atari_gettimeoffset (void)
unsigned long ticks, offset = 0;
/* read MFP timer C current value */
ticks = mfp.tim_dt_c;
ticks = st_mfp.tim_dt_c;
/* The probability of underflow is less than 2% */
if (ticks > INT_TICKS - INT_TICKS / 50)
/* Check for pending timer interrupt */
if (mfp.int_pn_b & (1 << 5))
if (st_mfp.int_pn_b & (1 << 5))
offset = TICK_SIZE;
ticks = INT_TICKS - ticks;

4
arch/m68k/include/asm/atarihw.h
View file

@ -113,7 +113,7 @@ extern struct atari_hw_present atari_hw_present;
* of nops on various machines. Somebody claimed that the tstb takes 600 ns.
*/
#define MFPDELAY() \
__asm__ __volatile__ ( "tstb %0" : : "m" (mfp.par_dt_reg) : "cc" );
__asm__ __volatile__ ( "tstb %0" : : "m" (st_mfp.par_dt_reg) : "cc" );
/* Do cache push/invalidate for DMA read/write. This function obeys the
* snooping on some machines (Medusa) and processors: The Medusa itself can
@ -565,7 +565,7 @@ struct MFP
u_char char_dummy23;
u_char usart_dta;
};
# define mfp ((*(volatile struct MFP*)MFP_BAS))
# define st_mfp ((*(volatile struct MFP*)MFP_BAS))
/* TT's second MFP */

6
arch/m68k/include/asm/atariints.h
View file

@ -113,7 +113,7 @@ static inline int get_mfp_bit( unsigned irq, int type )
{ unsigned char mask, *reg;
mask = 1 << (irq & 7);
reg = (unsigned char *)&mfp.int_en_a + type*4 +
reg = (unsigned char *)&st_mfp.int_en_a + type*4 +
((irq & 8) >> 2) + (((irq-8) & 16) << 3);
return( *reg & mask );
}
@ -123,7 +123,7 @@ static inline void set_mfp_bit( unsigned irq, int type )
{ unsigned char mask, *reg;
mask = 1 << (irq & 7);
reg = (unsigned char *)&mfp.int_en_a + type*4 +
reg = (unsigned char *)&st_mfp.int_en_a + type*4 +
((irq & 8) >> 2) + (((irq-8) & 16) << 3);
__asm__ __volatile__ ( "orb %0,%1"
: : "di" (mask), "m" (*reg) : "memory" );
@ -134,7 +134,7 @@ static inline void clear_mfp_bit( unsigned irq, int type )
{ unsigned char mask, *reg;
mask = ~(1 << (irq & 7));
reg = (unsigned char *)&mfp.int_en_a + type*4 +
reg = (unsigned char *)&st_mfp.int_en_a + type*4 +
((irq & 8) >> 2) + (((irq-8) & 16) << 3);
if (type == MFP_PENDING || type == MFP_SERVICE)
__asm__ __volatile__ ( "moveb %0,%1"

1
arch/mn10300/Kconfig
View file

@ -7,6 +7,7 @@ mainmenu "Linux Kernel Configuration"
config MN10300
def_bool y
select HAVE_OPROFILE
config AM33
def_bool y

2
arch/mn10300/unit-asb2305/pci.c
View file

@ -173,7 +173,7 @@ static int pci_ampci_write_config_byte(struct pci_bus *bus, unsigned int devfn,
BRIDGEREGB(where) = value;
} else {
if (bus->number == 0 &&
(devfn == PCI_DEVFN(2, 0) && devfn == PCI_DEVFN(3, 0))
(devfn == PCI_DEVFN(2, 0) || devfn == PCI_DEVFN(3, 0))
)
__pcidebug("<= %02x", bus, devfn, where, value);
CONFIG_ADDRESS = CONFIG_CMD(bus, devfn, where);

6
arch/um/drivers/vde_user.c
View file

@ -78,7 +78,7 @@ void vde_init_libstuff(struct vde_data *vpri, struct vde_init *init)
{
struct vde_open_args *args;
vpri->args = kmalloc(sizeof(struct vde_open_args), UM_GFP_KERNEL);
vpri->args = uml_kmalloc(sizeof(struct vde_open_args), UM_GFP_KERNEL);
if (vpri->args == NULL) {
printk(UM_KERN_ERR "vde_init_libstuff - vde_open_args "
"allocation failed");
@ -91,8 +91,8 @@ void vde_init_libstuff(struct vde_data *vpri, struct vde_init *init)
args->group = init->group;
args->mode = init->mode ? init->mode : 0700;
args->port ? printk(UM_KERN_INFO "port %d", args->port) :
printk(UM_KERN_INFO "undefined port");
args->port ? printk("port %d", args->port) :
printk("undefined port");
}
int vde_user_read(void *conn, void *buf, int len)

30
arch/x86/kernel/acpi/wakeup_64.S
View file

@ -13,7 +13,6 @@
* Hooray, we are in Long 64-bit mode (but still running in low memory)
*/
ENTRY(wakeup_long64)
wakeup_long64:
movq saved_magic, %rax
movq $0x123456789abcdef0, %rdx
cmpq %rdx, %rax
@ -34,16 +33,12 @@ wakeup_long64:
movq saved_rip, %rax
jmp *%rax
ENDPROC(wakeup_long64)
bogus_64_magic:
jmp bogus_64_magic
.align 2
.p2align 4,,15
.globl do_suspend_lowlevel
.type do_suspend_lowlevel,@function
do_suspend_lowlevel:
.LFB5:
ENTRY(do_suspend_lowlevel)
subq $8, %rsp
xorl %eax, %eax
call save_processor_state
@ -67,7 +62,7 @@ do_suspend_lowlevel:
pushfq
popq pt_regs_flags(%rax)
movq $.L97, saved_rip(%rip)
movq $resume_point, saved_rip(%rip)
movq %rsp, saved_rsp
movq %rbp, saved_rbp
@ -78,14 +73,12 @@ do_suspend_lowlevel:
addq $8, %rsp
movl $3, %edi
xorl %eax, %eax
jmp acpi_enter_sleep_state
.L97:
.p2align 4,,7
.L99:
.align 4
movl $24, %eax
movw %ax, %ds
call acpi_enter_sleep_state
/* in case something went wrong, restore the machine status and go on */
jmp resume_point
.align 4
resume_point:
/* We don't restore %rax, it must be 0 anyway */
movq $saved_context, %rax
movq saved_context_cr4(%rax), %rbx
@ -117,12 +110,9 @@ do_suspend_lowlevel:
xorl %eax, %eax
addq $8, %rsp
jmp restore_processor_state
.LFE5:
.Lfe5:
.size do_suspend_lowlevel, .Lfe5-do_suspend_lowlevel
ENDPROC(do_suspend_lowlevel)
.data
ALIGN
ENTRY(saved_rbp) .quad 0
ENTRY(saved_rsi) .quad 0
ENTRY(saved_rdi) .quad 0

4
arch/x86/kernel/apm_32.c
View file

@ -1192,6 +1192,7 @@ static int suspend(int vetoable)
device_suspend(PMSG_SUSPEND);
local_irq_disable();
device_power_down(PMSG_SUSPEND);
sysdev_suspend(PMSG_SUSPEND);
local_irq_enable();
@ -1208,6 +1209,7 @@ static int suspend(int vetoable)
if (err != APM_SUCCESS)
apm_error("suspend", err);
err = (err == APM_SUCCESS) ? 0 : -EIO;
sysdev_resume();
device_power_up(PMSG_RESUME);
local_irq_enable();
device_resume(PMSG_RESUME);
@ -1228,6 +1230,7 @@ static void standby(void)
local_irq_disable();
device_power_down(PMSG_SUSPEND);
sysdev_suspend(PMSG_SUSPEND);
local_irq_enable();
err = set_system_power_state(APM_STATE_STANDBY);
@ -1235,6 +1238,7 @@ static void standby(void)
apm_error("standby", err);
local_irq_disable();
sysdev_resume();
device_power_up(PMSG_RESUME);
local_irq_enable();
}

2
arch/x86/kernel/cpu/mcheck/mce_64.c
View file

@ -490,7 +490,7 @@ static void __cpuinit mce_cpu_quirks(struct cpuinfo_x86 *c)
}
static void __cpuinit mce_cpu_features(struct cpuinfo_x86 *c)
static void mce_cpu_features(struct cpuinfo_x86 *c)
{
switch (c->x86_vendor) {
case X86_VENDOR_INTEL:

2
arch/x86/kernel/cpu/mcheck/mce_amd_64.c
View file

@ -121,7 +121,7 @@ static long threshold_restart_bank(void *_tr)
}
/* cpu init entry point, called from mce.c with preempt off */
void __cpuinit mce_amd_feature_init(struct cpuinfo_x86 *c)
void mce_amd_feature_init(struct cpuinfo_x86 *c)
{
unsigned int bank, block;
unsigned int cpu = smp_processor_id();

4
arch/x86/kernel/cpu/mcheck/mce_intel_64.c
View file

@ -30,7 +30,7 @@ asmlinkage void smp_thermal_interrupt(void)
irq_exit();
}
static void __cpuinit intel_init_thermal(struct cpuinfo_x86 *c)
static void intel_init_thermal(struct cpuinfo_x86 *c)
{
u32 l, h;
int tm2 = 0;
@ -84,7 +84,7 @@ static void __cpuinit intel_init_thermal(struct cpuinfo_x86 *c)
return;
}
void __cpuinit mce_intel_feature_init(struct cpuinfo_x86 *c)
void mce_intel_feature_init(struct cpuinfo_x86 *c)
{
intel_init_thermal(c);
}

2
arch/x86/kernel/time_64.c
View file

@ -115,7 +115,7 @@ unsigned long __init calibrate_cpu(void)
static struct irqaction irq0 = {
.handler = timer_interrupt,
.flags = IRQF_DISABLED | IRQF_IRQPOLL | IRQF_NOBALANCING,
.flags = IRQF_DISABLED | IRQF_IRQPOLL | IRQF_NOBALANCING | IRQF_TIMER,
.mask = CPU_MASK_NONE,
.name = "timer"
};

2
arch/x86/kernel/vmiclock_32.c
View file

@ -202,7 +202,7 @@ static irqreturn_t vmi_timer_interrupt(int irq, void *dev_id)
static struct irqaction vmi_clock_action = {
.name = "vmi-timer",
.handler = vmi_timer_interrupt,
.flags = IRQF_DISABLED | IRQF_NOBALANCING,
.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TIMER,
.mask = CPU_MASK_ALL,
};

2
arch/x86/mach-default/setup.c
View file

@ -96,7 +96,7 @@ void __init trap_init_hook(void)
static struct irqaction irq0 = {
.handler = timer_interrupt,
.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL,
.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
.mask = CPU_MASK_NONE,
.name = "timer"
};

2
arch/x86/mach-voyager/setup.c
View file

@ -56,7 +56,7 @@ void __init trap_init_hook(void)
static struct irqaction irq0 = {
.handler = timer_interrupt,
.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL,
.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
.mask = CPU_MASK_NONE,
.name = "timer"
};

7
drivers/acpi/Kconfig
View file

@ -254,13 +254,6 @@ config ACPI_PCI_SLOT
help you correlate PCI bus addresses with the physical geography
of your slots. If you are unsure, say N.
config ACPI_SYSTEM
bool
default y
help
This driver will enable your system to shut down using ACPI, and
dump your ACPI DSDT table using /proc/acpi/dsdt.
config X86_PM_TIMER
bool "Power Management Timer Support" if EMBEDDED
depends on X86

2
drivers/acpi/Makefile
View file

@ -52,7 +52,7 @@ obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
obj-$(CONFIG_ACPI_CONTAINER) += container.o
obj-$(CONFIG_ACPI_THERMAL) += thermal.o
obj-y += power.o
obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o
obj-y += system.o event.o
obj-$(CONFIG_ACPI_DEBUG) += debug.o
obj-$(CONFIG_ACPI_NUMA) += numa.o
obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o

25
drivers/acpi/battery.c
View file

@ -138,6 +138,29 @@ static int acpi_battery_technology(struct acpi_battery *battery)
static int acpi_battery_get_state(struct acpi_battery *battery);
static int acpi_battery_is_charged(struct acpi_battery *battery)
{
/* either charging or discharging */
if (battery->state != 0)
return 0;
/* battery not reporting charge */
if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN ||
battery->capacity_now == 0)
return 0;
/* good batteries update full_charge as the batteries degrade */
if (battery->full_charge_capacity == battery->capacity_now)
return 1;
/* fallback to using design values for broken batteries */
if (battery->design_capacity == battery->capacity_now)
return 1;
/* we don't do any sort of metric based on percentages */
return 0;
}
static int acpi_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@ -155,7 +178,7 @@ static int acpi_battery_get_property(struct power_supply *psy,
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
else if (battery->state & 0x02)
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else if (battery->state == 0)
else if (acpi_battery_is_charged(battery))
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = POWER_SUPPLY_STATUS_UNKNOWN;

9
drivers/acpi/ec.c
View file

@ -120,6 +120,8 @@ static struct acpi_ec {
spinlock_t curr_lock;
} *boot_ec, *first_ec;
static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */
/* --------------------------------------------------------------------------
Transaction Management
-------------------------------------------------------------------------- */
@ -259,6 +261,8 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
acpi_disable_gpe(NULL, ec->gpe);
}
if (EC_FLAGS_MSI)
udelay(ACPI_EC_DELAY);
/* start transaction */
spin_lock_irqsave(&ec->curr_lock, tmp);
/* following two actions should be kept atomic */
@ -967,6 +971,11 @@ int __init acpi_ec_ecdt_probe(void)
/*
* Generate a boot ec context
*/
if (dmi_name_in_vendors("Micro-Star") ||
dmi_name_in_vendors("Notebook")) {
pr_info(PREFIX "Enabling special treatment for EC from MSI.\n");
EC_FLAGS_MSI = 1;
}
status = acpi_get_table(ACPI_SIG_ECDT, 1,
(struct acpi_table_header **)&ecdt_ptr);
if (ACPI_SUCCESS(status)) {

2
drivers/base/base.h
View file

@ -88,8 +88,6 @@ extern void driver_detach(struct device_driver *drv);
extern int driver_probe_device(struct device_driver *drv, struct device *dev);
extern void sysdev_shutdown(void);
extern int sysdev_suspend(pm_message_t state);
extern int sysdev_resume(void);
extern char *make_class_name(const char *name, struct kobject *kobj);

17
drivers/base/dd.c
View file

@ -18,9 +18,11 @@
*/
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/kthread.h>
#include <linux/wait.h>
#include <linux/async.h>
#include "base.h"
#include "power/power.h"
@ -167,6 +169,21 @@ int driver_probe_done(void)
return 0;
}
/**
* wait_for_device_probe
* Wait for device probing to be completed.
*
* Note: this function polls at 100 msec intervals.
*/
int wait_for_device_probe(void)
{
/* wait for the known devices to complete their probing */
while (driver_probe_done() != 0)
msleep(100);
async_synchronize_full();
return 0;
}
/**
* driver_probe_device - attempt to bind device & driver together
* @drv: driver to bind a device to

3
drivers/base/power/main.c
View file

@ -333,7 +333,6 @@ static void dpm_power_up(pm_message_t state)
*/
void device_power_up(pm_message_t state)
{
sysdev_resume();
dpm_power_up(state);
}
EXPORT_SYMBOL_GPL(device_power_up);
@ -577,8 +576,6 @@ int device_power_down(pm_message_t state)
}
dev->power.status = DPM_OFF_IRQ;
}
if (!error)
error = sysdev_suspend(state);
if (error)
dpm_power_up(resume_event(state));
return error;

7
drivers/base/sys.c
View file

@ -303,7 +303,6 @@ void sysdev_unregister(struct sys_device * sysdev)
* is guaranteed by virtue of the fact that child devices are registered
* after their parents.
*/
void sysdev_shutdown(void)
{
struct sysdev_class * cls;
@ -363,7 +362,6 @@ static void __sysdev_resume(struct sys_device *dev)
* This is only called by the device PM core, so we let them handle
* all synchronization.
*/
int sysdev_suspend(pm_message_t state)
{
struct sysdev_class * cls;
@ -432,7 +430,7 @@ aux_driver:
}
return ret;
}
EXPORT_SYMBOL_GPL(sysdev_suspend);
/**
* sysdev_resume - Bring system devices back to life.
@ -442,7 +440,6 @@ aux_driver:
*
* Note: Interrupts are disabled when called.
*/
int sysdev_resume(void)
{
struct sysdev_class * cls;
@ -463,7 +460,7 @@ int sysdev_resume(void)
}
return 0;
}
EXPORT_SYMBOL_GPL(sysdev_resume);
int __init system_bus_init(void)
{

4
drivers/block/ataflop.c
View file

@ -1730,7 +1730,7 @@ static int __init fd_test_drive_present( int drive )
timeout = jiffies + 2*HZ+HZ/2;
while (time_before(jiffies, timeout))
if (!(mfp.par_dt_reg & 0x20))
if (!(st_mfp.par_dt_reg & 0x20))
break;
status = FDC_READ( FDCREG_STATUS );
@ -1747,7 +1747,7 @@ static int __init fd_test_drive_present( int drive )
/* dummy seek command to make WP bit accessible */
FDC_WRITE( FDCREG_DATA, 0 );
FDC_WRITE( FDCREG_CMD, FDCCMD_SEEK );
while( mfp.par_dt_reg & 0x20 )
while( st_mfp.par_dt_reg & 0x20 )
;
status = FDC_READ( FDCREG_STATUS );
}

2
drivers/char/scc.h
View file

@ -387,7 +387,7 @@ struct scc_port {
/* The SCC needs 3.5 PCLK cycles recovery time between to register
* accesses. PCLK runs with 8 MHz on an Atari, so this delay is 3.5 *
* 125 ns = 437.5 ns. This is too short for udelay().
* 10/16/95: A tstb mfp.par_dt_reg takes 600ns (sure?) and thus should be
* 10/16/95: A tstb st_mfp.par_dt_reg takes 600ns (sure?) and thus should be
* quite right
*/

5
drivers/char/sx.c
View file

@ -1746,9 +1746,10 @@ static long sx_fw_ioctl(struct file *filp, unsigned int cmd,
sx_dprintk(SX_DEBUG_FIRMWARE, "returning type= %ld\n", rc);
break;
case SXIO_DO_RAMTEST:
if (sx_initialized) /* Already initialized: better not ramtest the board. */
if (sx_initialized) { /* Already initialized: better not ramtest the board. */
rc = -EPERM;
break;
}
if (IS_SX_BOARD(board)) {
rc = do_memtest(board, 0, 0x7000);
if (!rc)
@ -1788,7 +1789,7 @@ static long sx_fw_ioctl(struct file *filp, unsigned int cmd,
nbytes - i : SX_CHUNK_SIZE)) {
kfree(tmp);
rc = -EFAULT;
break;
goto out;
}
memcpy_toio(board->base2 + offset + i, tmp,
(i + SX_CHUNK_SIZE > nbytes) ?

3
drivers/gpu/drm/drm_crtc.c
View file

@ -1741,9 +1741,8 @@ out:
* RETURNS:
* Zero on success, errno on failure.
*/
void drm_fb_release(struct file *filp)
void drm_fb_release(struct drm_file *priv)
{
struct drm_file *priv = filp->private_data;
struct drm_device *dev = priv->minor->dev;
struct drm_framebuffer *fb, *tfb;

21
drivers/gpu/drm/drm_crtc_helper.c
View file

@ -512,8 +512,8 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
if (drm_mode_equal(&saved_mode, &crtc->mode)) {
if (saved_x != crtc->x || saved_y != crtc->y ||
depth_changed || bpp_changed) {
crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y,
old_fb);
ret = !crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y,
old_fb);
goto done;
}
}
@ -552,7 +552,9 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
/* Set up the DPLL and any encoders state that needs to adjust or depend
* on the DPLL.
*/
crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
if (!ret)
goto done;
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
@ -752,6 +754,8 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
set->x, set->y,
old_fb)) {
DRM_ERROR("failed to set mode on crtc %p\n",
set->crtc);
ret = -EINVAL;
goto fail_set_mode;
}
@ -765,7 +769,10 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
old_fb = set->crtc->fb;
if (set->crtc->fb != set->fb)
set->crtc->fb = set->fb;
crtc_funcs->mode_set_base(set->crtc, set->x, set->y, old_fb);
ret = crtc_funcs->mode_set_base(set->crtc,
set->x, set->y, old_fb);
if (ret != 0)
goto fail_set_mode;
}
kfree(save_encoders);
@ -775,8 +782,12 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
fail_set_mode:
set->crtc->enabled = save_enabled;
count = 0;
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (!connector->encoder)
continue;
connector->encoder->crtc = save_crtcs[count++];
}
fail_no_encoder:
kfree(save_crtcs);
count = 0;

3
drivers/gpu/drm/drm_fops.c
View file

@ -457,6 +457,9 @@ int drm_release(struct inode *inode, struct file *filp)
if (dev->driver->driver_features & DRIVER_GEM)
drm_gem_release(dev, file_priv);
if (dev->driver->driver_features & DRIVER_MODESET)
drm_fb_release(file_priv);
mutex_lock(&dev->ctxlist_mutex);
if (!list_empty(&dev->ctxlist)) {
struct drm_ctx_list *pos, *n;

79
drivers/gpu/drm/drm_gem.c
View file

@ -104,8 +104,8 @@ drm_gem_init(struct drm_device *dev)
if (drm_mm_init(&mm->offset_manager, DRM_FILE_PAGE_OFFSET_START,
DRM_FILE_PAGE_OFFSET_SIZE)) {
drm_free(mm, sizeof(struct drm_gem_mm), DRM_MEM_MM);
drm_ht_remove(&mm->offset_hash);
drm_free(mm, sizeof(struct drm_gem_mm), DRM_MEM_MM);
return -ENOMEM;
}
@ -295,35 +295,37 @@ drm_gem_flink_ioctl(struct drm_device *dev, void *data,
return -EBADF;
again:
if (idr_pre_get(&dev->object_name_idr, GFP_KERNEL) == 0)
return -ENOMEM;
if (idr_pre_get(&dev->object_name_idr, GFP_KERNEL) == 0) {
ret = -ENOMEM;
goto err;
}
spin_lock(&dev->object_name_lock);
if (obj->name) {
args->name = obj->name;
if (!obj->name) {
ret = idr_get_new_above(&dev->object_name_idr, obj, 1,
&obj->name);
args->name = (uint64_t) obj->name;
spin_unlock(&dev->object_name_lock);
return 0;
}
ret = idr_get_new_above(&dev->object_name_idr, obj, 1,
&obj->name);
spin_unlock(&dev->object_name_lock);
if (ret == -EAGAIN)
goto again;
if (ret != 0) {
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return ret;
if (ret == -EAGAIN)
goto again;
if (ret != 0)
goto err;
/* Allocate a reference for the name table. */
drm_gem_object_reference(obj);
} else {
args->name = (uint64_t) obj->name;
spin_unlock(&dev->object_name_lock);
ret = 0;
}
/*
* Leave the reference from the lookup around as the
* name table now holds one
*/
args->name = (uint64_t) obj->name;
return 0;
err:
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return ret;
}
/**
@ -448,6 +450,7 @@ drm_gem_object_handle_free(struct kref *kref)
spin_lock(&dev->object_name_lock);
if (obj->name) {
idr_remove(&dev->object_name_idr, obj->name);
obj->name = 0;
spin_unlock(&dev->object_name_lock);
/*
* The object name held a reference to this object, drop
@ -460,6 +463,26 @@ drm_gem_object_handle_free(struct kref *kref)
}
EXPORT_SYMBOL(drm_gem_object_handle_free);
void drm_gem_vm_open(struct vm_area_struct *vma)
{
struct drm_gem_object *obj = vma->vm_private_data;
drm_gem_object_reference(obj);
}
EXPORT_SYMBOL(drm_gem_vm_open);
void drm_gem_vm_close(struct vm_area_struct *vma)
{
struct drm_gem_object *obj = vma->vm_private_data;
struct drm_device *dev = obj->dev;
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
}
EXPORT_SYMBOL(drm_gem_vm_close);
/**
* drm_gem_mmap - memory map routine for GEM objects
* @filp: DRM file pointer
@ -521,6 +544,14 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
#endif
vma->vm_page_prot = __pgprot(prot);
/* Take a ref for this mapping of the object, so that the fault
* handler can dereference the mmap offset's pointer to the object.
* This reference is cleaned up by the corresponding vm_close
* (which should happen whether the vma was created by this call, or
* by a vm_open due to mremap or partial unmap or whatever).
*/
drm_gem_object_reference(obj);
vma->vm_file = filp; /* Needed for drm_vm_open() */
drm_vm_open_locked(vma);

2
drivers/gpu/drm/i915/i915_dma.c
View file

@ -202,7 +202,7 @@ static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
dev_priv->ring.map.flags = 0;
dev_priv->ring.map.mtrr = 0;
drm_core_ioremap(&dev_priv->ring.map, dev);
drm_core_ioremap_wc(&dev_priv->ring.map, dev);
if (dev_priv->ring.map.handle == NULL) {
i915_dma_cleanup(dev);

25
drivers/gpu/drm/i915/i915_drv.c
View file

@ -27,6 +27,7 @@
*
*/
#include <linux/device.h>
#include "drmP.h"
#include "drm.h"
#include "i915_drm.h"
@ -66,6 +67,12 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
i915_save_state(dev);
/* If KMS is active, we do the leavevt stuff here */
if (drm_core_check_feature(dev, DRIVER_MODESET) && i915_gem_idle(dev)) {
dev_err(&dev->pdev->dev, "GEM idle failed, aborting suspend\n");
return -EBUSY;
}
intel_opregion_free(dev);
if (state.event == PM_EVENT_SUSPEND) {
@ -79,6 +86,9 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
static int i915_resume(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret = 0;
pci_set_power_state(dev->pdev, PCI_D0);
pci_restore_state(dev->pdev);
if (pci_enable_device(dev->pdev))
@ -89,11 +99,24 @@ static int i915_resume(struct drm_device *dev)
intel_opregion_init(dev);
return 0;
/* KMS EnterVT equivalent */
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
mutex_lock(&dev->struct_mutex);
dev_priv->mm.suspended = 0;
ret = i915_gem_init_ringbuffer(dev);
if (ret != 0)
ret = -1;
mutex_unlock(&dev->struct_mutex);
}
return ret;
}
static struct vm_operations_struct i915_gem_vm_ops = {
.fault = i915_gem_fault,
.open = drm_gem_vm_open,
.close = drm_gem_vm_close,
};
static struct drm_driver driver = {

3
drivers/gpu/drm/i915/i915_drv.h
View file

@ -184,6 +184,8 @@ typedef struct drm_i915_private {
unsigned int lvds_dither:1;
unsigned int lvds_vbt:1;
unsigned int int_crt_support:1;
unsigned int lvds_use_ssc:1;
int lvds_ssc_freq;
struct drm_i915_fence_reg fence_regs[16]; /* assume 965 */
int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
@ -616,6 +618,7 @@ int i915_gem_init_ringbuffer(struct drm_device *dev);
void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
int i915_gem_do_init(struct drm_device *dev, unsigned long start,
unsigned long end);
int i915_gem_idle(struct drm_device *dev);
int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
int i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj,
int write);

182
drivers/gpu/drm/i915/i915_gem.c
View file

@ -34,10 +34,6 @@
#define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
static void
i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
uint32_t read_domains,
uint32_t write_domain);
static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj);
static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj);
static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj);
@ -607,8 +603,6 @@ int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
case -EAGAIN:
return VM_FAULT_OOM;
case -EFAULT:
case -EBUSY:
DRM_ERROR("can't insert pfn?? fault or busy...\n");
return VM_FAULT_SIGBUS;
default:
return VM_FAULT_NOPAGE;
@ -684,6 +678,30 @@ out_free_list:
return ret;
}
static void
i915_gem_free_mmap_offset(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
struct drm_gem_mm *mm = dev->mm_private;
struct drm_map_list *list;
list = &obj->map_list;
drm_ht_remove_item(&mm->offset_hash, &list->hash);
if (list->file_offset_node) {
drm_mm_put_block(list->file_offset_node);
list->file_offset_node = NULL;
}
if (list->map) {
drm_free(list->map, sizeof(struct drm_map), DRM_MEM_DRIVER);
list->map = NULL;
}
obj_priv->mmap_offset = 0;
}
/**
* i915_gem_get_gtt_alignment - return required GTT alignment for an object
* @obj: object to check
@ -758,8 +776,11 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
if (!obj_priv->mmap_offset) {
ret = i915_gem_create_mmap_offset(obj);
if (ret)
if (ret) {
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return ret;
}
}
args->offset = obj_priv->mmap_offset;
@ -1996,30 +2017,28 @@ i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write)
* drm_agp_chipset_flush
*/
static void
i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
uint32_t read_domains,
uint32_t write_domain)
i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
uint32_t invalidate_domains = 0;
uint32_t flush_domains = 0;
BUG_ON(read_domains & I915_GEM_DOMAIN_CPU);
BUG_ON(write_domain == I915_GEM_DOMAIN_CPU);
BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU);
BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU);
#if WATCH_BUF
DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n",
__func__, obj,
obj->read_domains, read_domains,
obj->write_domain, write_domain);
obj->read_domains, obj->pending_read_domains,
obj->write_domain, obj->pending_write_domain);
#endif
/*
* If the object isn't moving to a new write domain,
* let the object stay in multiple read domains
*/
if (write_domain == 0)
read_domains |= obj->read_domains;
if (obj->pending_write_domain == 0)
obj->pending_read_domains |= obj->read_domains;
else
obj_priv->dirty = 1;
@ -2029,15 +2048,17 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
* any read domains which differ from the old
* write domain
*/
if (obj->write_domain && obj->write_domain != read_domains) {
if (obj->write_domain &&
obj->write_domain != obj->pending_read_domains) {
flush_domains |= obj->write_domain;
invalidate_domains |= read_domains & ~obj->write_domain;
invalidate_domains |=
obj->pending_read_domains & ~obj->write_domain;
}
/*
* Invalidate any read caches which may have
* stale data. That is, any new read domains.
*/
invalidate_domains |= read_domains & ~obj->read_domains;
invalidate_domains |= obj->pending_read_domains & ~obj->read_domains;
if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) {
#if WATCH_BUF
DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n",
@ -2046,9 +2067,15 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
i915_gem_clflush_object(obj);
}
if ((write_domain | flush_domains) != 0)
obj->write_domain = write_domain;
obj->read_domains = read_domains;
/* The actual obj->write_domain will be updated with
* pending_write_domain after we emit the accumulated flush for all
* of our domain changes in execbuffers (which clears objects'
* write_domains). So if we have a current write domain that we
* aren't changing, set pending_write_domain to that.
*/
if (flush_domains == 0 && obj->pending_write_domain == 0)
obj->pending_write_domain = obj->write_domain;
obj->read_domains = obj->pending_read_domains;
dev->invalidate_domains |= invalidate_domains;
dev->flush_domains |= flush_domains;
@ -2251,6 +2278,8 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj,
(int) reloc.offset,
reloc.read_domains,
reloc.write_domain);
drm_gem_object_unreference(target_obj);
i915_gem_object_unpin(obj);
return -EINVAL;
}
@ -2480,13 +2509,15 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
if (dev_priv->mm.wedged) {
DRM_ERROR("Execbuf while wedged\n");
mutex_unlock(&dev->struct_mutex);
return -EIO;
ret = -EIO;
goto pre_mutex_err;
}
if (dev_priv->mm.suspended) {
DRM_ERROR("Execbuf while VT-switched.\n");
mutex_unlock(&dev->struct_mutex);
return -EBUSY;
ret = -EBUSY;
goto pre_mutex_err;
}
/* Look up object handles */
@ -2554,9 +2585,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
struct drm_gem_object *obj = object_list[i];
/* Compute new gpu domains and update invalidate/flush */
i915_gem_object_set_to_gpu_domain(obj,
obj->pending_read_domains,
obj->pending_write_domain);
i915_gem_object_set_to_gpu_domain(obj);
}
i915_verify_inactive(dev, __FILE__, __LINE__);
@ -2575,6 +2604,12 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
(void)i915_add_request(dev, dev->flush_domains);
}
for (i = 0; i < args->buffer_count; i++) {
struct drm_gem_object *obj = object_list[i];
obj->write_domain = obj->pending_write_domain;
}
i915_verify_inactive(dev, __FILE__, __LINE__);
#if WATCH_COHERENCY
@ -2632,15 +2667,6 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
i915_verify_inactive(dev, __FILE__, __LINE__);
/* Copy the new buffer offsets back to the user's exec list. */
ret = copy_to_user((struct drm_i915_relocation_entry __user *)
(uintptr_t) args->buffers_ptr,
exec_list,
sizeof(*exec_list) * args->buffer_count);
if (ret)
DRM_ERROR("failed to copy %d exec entries "
"back to user (%d)\n",
args->buffer_count, ret);
err:
for (i = 0; i < pinned; i++)
i915_gem_object_unpin(object_list[i]);
@ -2650,6 +2676,18 @@ err:
mutex_unlock(&dev->struct_mutex);
if (!ret) {
/* Copy the new buffer offsets back to the user's exec list. */
ret = copy_to_user((struct drm_i915_relocation_entry __user *)
(uintptr_t) args->buffers_ptr,
exec_list,
sizeof(*exec_list) * args->buffer_count);
if (ret)
DRM_ERROR("failed to copy %d exec entries "
"back to user (%d)\n",
args->buffer_count, ret);
}
pre_mutex_err:
drm_free(object_list, sizeof(*object_list) * args->buffer_count,
DRM_MEM_DRIVER);
@ -2753,6 +2791,7 @@ i915_gem_pin_ioctl(struct drm_device *dev, void *data,
if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) {
DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n",
args->handle);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return -EINVAL;
}
@ -2833,6 +2872,13 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data,
return -EBADF;
}
/* Update the active list for the hardware's current position.
* Otherwise this only updates on a delayed timer or when irqs are
* actually unmasked, and our working set ends up being larger than
* required.
*/
i915_gem_retire_requests(dev);
obj_priv = obj->driver_private;
/* Don't count being on the flushing list against the object being
* done. Otherwise, a buffer left on the flushing list but not getting
@ -2885,9 +2931,6 @@ int i915_gem_init_object(struct drm_gem_object *obj)
void i915_gem_free_object(struct drm_gem_object *obj)
{
struct drm_device *dev = obj->dev;
struct drm_gem_mm *mm = dev->mm_private;
struct drm_map_list *list;
struct drm_map *map;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
while (obj_priv->pin_count > 0)
@ -2898,19 +2941,7 @@ void i915_gem_free_object(struct drm_gem_object *obj)
i915_gem_object_unbind(obj);
list = &obj->map_list;
drm_ht_remove_item(&mm->offset_hash, &list->hash);
if (list->file_offset_node) {
drm_mm_put_block(list->file_offset_node);
list->file_offset_node = NULL;
}
map = list->map;
if (map) {
drm_free(map, sizeof(*map), DRM_MEM_DRIVER);
list->map = NULL;
}
i915_gem_free_mmap_offset(obj);
drm_free(obj_priv->page_cpu_valid, 1, DRM_MEM_DRIVER);
drm_free(obj->driver_private, 1, DRM_MEM_DRIVER);
@ -2949,7 +2980,7 @@ i915_gem_evict_from_list(struct drm_device *dev, struct list_head *head)
return 0;
}
static int
int
i915_gem_idle(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
@ -3095,6 +3126,7 @@ i915_gem_init_hws(struct drm_device *dev)
if (dev_priv->hw_status_page == NULL) {
DRM_ERROR("Failed to map status page.\n");
memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
return -EINVAL;
}
@ -3107,6 +3139,31 @@ i915_gem_init_hws(struct drm_device *dev)
return 0;
}
static void
i915_gem_cleanup_hws(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_gem_object *obj;
struct drm_i915_gem_object *obj_priv;
if (dev_priv->hws_obj == NULL)
return;
obj = dev_priv->hws_obj;
obj_priv = obj->driver_private;
kunmap(obj_priv->page_list[0]);
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
dev_priv->hws_obj = NULL;
memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
dev_priv->hw_status_page = NULL;
/* Write high address into HWS_PGA when disabling. */
I915_WRITE(HWS_PGA, 0x1ffff000);
}
int
i915_gem_init_ringbuffer(struct drm_device *dev)
{
@ -3124,6 +3181,7 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
obj = drm_gem_object_alloc(dev, 128 * 1024);
if (obj == NULL) {
DRM_ERROR("Failed to allocate ringbuffer\n");
i915_gem_cleanup_hws(dev);
return -ENOMEM;
}
obj_priv = obj->driver_private;
@ -3131,6 +3189,7 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
ret = i915_gem_object_pin(obj, 4096);
if (ret != 0) {
drm_gem_object_unreference(obj);
i915_gem_cleanup_hws(dev);
return ret;
}
@ -3148,7 +3207,9 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
if (ring->map.handle == NULL) {
DRM_ERROR("Failed to map ringbuffer.\n");
memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
i915_gem_cleanup_hws(dev);
return -EINVAL;
}
ring->ring_obj = obj;
@ -3228,20 +3289,7 @@ i915_gem_cleanup_ringbuffer(struct drm_device *dev)
dev_priv->ring.ring_obj = NULL;
memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
if (dev_priv->hws_obj != NULL) {
struct drm_gem_object *obj = dev_priv->hws_obj;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
kunmap(obj_priv->page_list[0]);
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
dev_priv->hws_obj = NULL;
memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
dev_priv->hw_status_page = NULL;
/* Write high address into HWS_PGA when disabling. */
I915_WRITE(HWS_PGA, 0x1ffff000);
}
i915_gem_cleanup_hws(dev);
}
int

6
drivers/gpu/drm/i915/i915_gem_tiling.c
View file

@ -299,9 +299,8 @@ i915_gem_set_tiling(struct drm_device *dev, void *data,
}
obj_priv->stride = args->stride;
mutex_unlock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return 0;
}
@ -340,9 +339,8 @@ i915_gem_get_tiling(struct drm_device *dev, void *data,
DRM_ERROR("unknown tiling mode\n");
}
mutex_unlock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return 0;
}

8
drivers/gpu/drm/i915/intel_bios.c
View file

@ -135,6 +135,14 @@ parse_general_features(struct drm_i915_private *dev_priv,
if (general) {
dev_priv->int_tv_support = general->int_tv_support;
dev_priv->int_crt_support = general->int_crt_support;
dev_priv->lvds_use_ssc = general->enable_ssc;
if (dev_priv->lvds_use_ssc) {
if (IS_I855(dev_priv->dev))
dev_priv->lvds_ssc_freq = general->ssc_freq ? 66 : 48;
else
dev_priv->lvds_ssc_freq = general->ssc_freq ? 100 : 96;
}
}
}

161
drivers/gpu/drm/i915/intel_display.c
View file

@ -90,12 +90,12 @@ typedef struct {
#define I9XX_DOT_MAX 400000
#define I9XX_VCO_MIN 1400000
#define I9XX_VCO_MAX 2800000
#define I9XX_N_MIN 3
#define I9XX_N_MAX 8
#define I9XX_N_MIN 1
#define I9XX_N_MAX 6
#define I9XX_M_MIN 70
#define I9XX_M_MAX 120
#define I9XX_M1_MIN 10
#define I9XX_M1_MAX 20
#define I9XX_M1_MAX 22
#define I9XX_M2_MIN 5
#define I9XX_M2_MAX 9
#define I9XX_P_SDVO_DAC_MIN 5
@ -189,9 +189,7 @@ static const intel_limit_t *intel_limit(struct drm_crtc *crtc)
return limit;
}
/** Derive the pixel clock for the given refclk and divisors for 8xx chips. */
static void i8xx_clock(int refclk, intel_clock_t *clock)
static void intel_clock(int refclk, intel_clock_t *clock)
{
clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
clock->p = clock->p1 * clock->p2;
@ -199,25 +197,6 @@ static void i8xx_clock(int refclk, intel_clock_t *clock)
clock->dot = clock->vco / clock->p;
}
/** Derive the pixel clock for the given refclk and divisors for 9xx chips. */
static void i9xx_clock(int refclk, intel_clock_t *clock)
{
clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
clock->p = clock->p1 * clock->p2;
clock->vco = refclk * clock->m / (clock->n + 2);
clock->dot = clock->vco / clock->p;
}
static void intel_clock(struct drm_device *dev, int refclk,
intel_clock_t *clock)
{
if (IS_I9XX(dev))
i9xx_clock (refclk, clock);
else
i8xx_clock (refclk, clock);
}
/**
* Returns whether any output on the specified pipe is of the specified type
*/
@ -238,7 +217,7 @@ bool intel_pipe_has_type (struct drm_crtc *crtc, int type)
return false;
}
#define INTELPllInvalid(s) { /* ErrorF (s) */; return false; }
#define INTELPllInvalid(s) do { DRM_DEBUG(s); return false; } while (0)
/**
* Returns whether the given set of divisors are valid for a given refclk with
* the given connectors.
@ -318,7 +297,7 @@ static bool intel_find_best_PLL(struct drm_crtc *crtc, int target,
clock.p1 <= limit->p1.max; clock.p1++) {
int this_err;
intel_clock(dev, refclk, &clock);
intel_clock(refclk, &clock);
if (!intel_PLL_is_valid(crtc, &clock))
continue;
@ -343,7 +322,7 @@ intel_wait_for_vblank(struct drm_device *dev)
udelay(20000);
}
static void
static int
intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
@ -361,11 +340,21 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
int dspstride = (pipe == 0) ? DSPASTRIDE : DSPBSTRIDE;
int dspcntr_reg = (pipe == 0) ? DSPACNTR : DSPBCNTR;
u32 dspcntr, alignment;
int ret;
/* no fb bound */
if (!crtc->fb) {
DRM_DEBUG("No FB bound\n");
return;
return 0;
}
switch (pipe) {
case 0:
case 1:
break;
default:
DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
return -EINVAL;
}
intel_fb = to_intel_framebuffer(crtc->fb);
@ -377,28 +366,30 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
alignment = 64 * 1024;
break;
case I915_TILING_X:
if (IS_I9XX(dev))
alignment = 1024 * 1024;
else
alignment = 512 * 1024;
/* pin() will align the object as required by fence */
alignment = 0;
break;
case I915_TILING_Y:
/* FIXME: Is this true? */
DRM_ERROR("Y tiled not allowed for scan out buffers\n");
return;
return -EINVAL;
default:
BUG();
}
if (i915_gem_object_pin(intel_fb->obj, alignment))
return;
mutex_lock(&dev->struct_mutex);
ret = i915_gem_object_pin(intel_fb->obj, alignment);
if (ret != 0) {
mutex_unlock(&dev->struct_mutex);
return ret;
}
i915_gem_object_set_to_gtt_domain(intel_fb->obj, 1);
Start = obj_priv->gtt_offset;
Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
I915_WRITE(dspstride, crtc->fb->pitch);
ret = i915_gem_object_set_to_gtt_domain(intel_fb->obj, 1);
if (ret != 0) {
i915_gem_object_unpin(intel_fb->obj);
mutex_unlock(&dev->struct_mutex);
return ret;
}
dspcntr = I915_READ(dspcntr_reg);
/* Mask out pixel format bits in case we change it */
@ -419,11 +410,17 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
break;
default:
DRM_ERROR("Unknown color depth\n");
return;
i915_gem_object_unpin(intel_fb->obj);
mutex_unlock(&dev->struct_mutex);
return -EINVAL;
}
I915_WRITE(dspcntr_reg, dspcntr);
Start = obj_priv->gtt_offset;
Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
DRM_DEBUG("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y);
I915_WRITE(dspstride, crtc->fb->pitch);
if (IS_I965G(dev)) {
I915_WRITE(dspbase, Offset);
I915_READ(dspbase);
@ -440,27 +437,24 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
intel_fb = to_intel_framebuffer(old_fb);
i915_gem_object_unpin(intel_fb->obj);
}
mutex_unlock(&dev->struct_mutex);
if (!dev->primary->master)
return;
return 0;
master_priv = dev->primary->master->driver_priv;
if (!master_priv->sarea_priv)
return;
return 0;
switch (pipe) {
case 0:
master_priv->sarea_priv->pipeA_x = x;
master_priv->sarea_priv->pipeA_y = y;
break;
case 1:
if (pipe) {
master_priv->sarea_priv->pipeB_x = x;
master_priv->sarea_priv->pipeB_y = y;
break;
default:
DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
break;
} else {
master_priv->sarea_priv->pipeA_x = x;
master_priv->sarea_priv->pipeA_y = y;
}
return 0;
}
@ -708,11 +702,11 @@ static int intel_panel_fitter_pipe (struct drm_device *dev)
return 1;
}
static void intel_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y,
struct drm_framebuffer *old_fb)
static int intel_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@ -732,13 +726,14 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
int dspsize_reg = (pipe == 0) ? DSPASIZE : DSPBSIZE;
int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
int refclk;
int refclk, num_outputs = 0;
intel_clock_t clock;
u32 dpll = 0, fp = 0, dspcntr, pipeconf;
bool ok, is_sdvo = false, is_dvo = false;
bool is_crt = false, is_lvds = false, is_tv = false;
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *connector;
int ret;
drm_vblank_pre_modeset(dev, pipe);
@ -768,9 +763,14 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
is_crt = true;
break;
}
num_outputs++;
}
if (IS_I9XX(dev)) {
if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2) {
refclk = dev_priv->lvds_ssc_freq * 1000;
DRM_DEBUG("using SSC reference clock of %d MHz\n", refclk / 1000);
} else if (IS_I9XX(dev)) {
refclk = 96000;
} else {
refclk = 48000;
@ -779,7 +779,7 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
ok = intel_find_best_PLL(crtc, adjusted_mode->clock, refclk, &clock);
if (!ok) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return;
return -EINVAL;
}
fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
@ -829,11 +829,14 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
}
}
if (is_tv) {
if (is_sdvo && is_tv)
dpll |= PLL_REF_INPUT_TVCLKINBC;
else if (is_tv)
/* XXX: just matching BIOS for now */
/* dpll |= PLL_REF_INPUT_TVCLKINBC; */
/* dpll |= PLL_REF_INPUT_TVCLKINBC; */
dpll |= 3;
}
else if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2)
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
@ -950,9 +953,13 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
I915_WRITE(dspcntr_reg, dspcntr);
/* Flush the plane changes */
intel_pipe_set_base(crtc, x, y, old_fb);
ret = intel_pipe_set_base(crtc, x, y, old_fb);
if (ret != 0)
return ret;
drm_vblank_post_modeset(dev, pipe);
return 0;
}
/** Loads the palette/gamma unit for the CRTC with the prepared values */
@ -1001,6 +1008,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
temp = CURSOR_MODE_DISABLE;
addr = 0;
bo = NULL;
mutex_lock(&dev->struct_mutex);
goto finish;
}
@ -1023,18 +1031,19 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
}
/* we only need to pin inside GTT if cursor is non-phy */
mutex_lock(&dev->struct_mutex);
if (!dev_priv->cursor_needs_physical) {
ret = i915_gem_object_pin(bo, PAGE_SIZE);
if (ret) {
DRM_ERROR("failed to pin cursor bo\n");
goto fail;
goto fail_locked;
}
addr = obj_priv->gtt_offset;
} else {
ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1);
if (ret) {
DRM_ERROR("failed to attach phys object\n");
goto fail;
goto fail_locked;
}
addr = obj_priv->phys_obj->handle->busaddr;
}
@ -1054,10 +1063,9 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
} else
i915_gem_object_unpin(intel_crtc->cursor_bo);
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(intel_crtc->cursor_bo);
mutex_unlock(&dev->struct_mutex);
}
mutex_unlock(&dev->struct_mutex);
intel_crtc->cursor_addr = addr;
intel_crtc->cursor_bo = bo;
@ -1065,6 +1073,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
return 0;
fail:
mutex_lock(&dev->struct_mutex);
fail_locked:
drm_gem_object_unreference(bo);
mutex_unlock(&dev->struct_mutex);
return ret;
@ -1292,7 +1301,7 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
}
/* XXX: Handle the 100Mhz refclk */
i9xx_clock(96000, &clock);
intel_clock(96000, &clock);
} else {
bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
@ -1304,9 +1313,9 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
if ((dpll & PLL_REF_INPUT_MASK) ==
PLLB_REF_INPUT_SPREADSPECTRUMIN) {
/* XXX: might not be 66MHz */
i8xx_clock(66000, &clock);
intel_clock(66000, &clock);
} else
i8xx_clock(48000, &clock);
intel_clock(48000, &clock);
} else {
if (dpll & PLL_P1_DIVIDE_BY_TWO)
clock.p1 = 2;
@ -1319,7 +1328,7 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
else
clock.p2 = 2;
i8xx_clock(48000, &clock);
intel_clock(48000, &clock);
}
}
@ -1598,7 +1607,9 @@ intel_user_framebuffer_create(struct drm_device *dev,
ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj);
if (ret) {
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return NULL;
}

8
drivers/gpu/drm/i915/intel_fb.c
View file

@ -473,7 +473,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo);
if (ret) {
DRM_ERROR("failed to allocate fb.\n");
goto out_unref;
goto out_unpin;
}
list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
@ -484,7 +484,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
info = framebuffer_alloc(sizeof(struct intelfb_par), device);
if (!info) {
ret = -ENOMEM;
goto out_unref;
goto out_unpin;
}
par = info->par;
@ -513,7 +513,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
size);
if (!info->screen_base) {
ret = -ENOSPC;
goto out_unref;
goto out_unpin;
}
info->screen_size = size;
@ -608,6 +608,8 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
mutex_unlock(&dev->struct_mutex);
return 0;
out_unpin:
i915_gem_object_unpin(fbo);
out_unref:
drm_gem_object_unreference(fbo);
mutex_unlock(&dev->struct_mutex);

2
drivers/gpu/drm/i915/intel_lvds.c
View file

@ -481,8 +481,6 @@ void intel_lvds_init(struct drm_device *dev)
if (dev_priv->panel_fixed_mode) {
dev_priv->panel_fixed_mode->type |=
DRM_MODE_TYPE_PREFERRED;
drm_mode_probed_add(connector,
dev_priv->panel_fixed_mode);
goto out;
}
}

2
drivers/gpu/drm/i915/intel_sdvo.c
View file

@ -193,7 +193,7 @@ static bool intel_sdvo_write_byte(struct intel_output *intel_output, int addr,
#define SDVO_CMD_NAME_ENTRY(cmd) {cmd, #cmd}
/** Mapping of command numbers to names, for debug output */
const static struct _sdvo_cmd_name {
static const struct _sdvo_cmd_name {
u8 cmd;
char *name;
} sdvo_cmd_names[] = {

2
drivers/gpu/drm/i915/intel_tv.c
View file

@ -411,7 +411,7 @@ struct tv_mode {
* These values account for -1s required.
*/
const static struct tv_mode tv_modes[] = {
static const struct tv_mode tv_modes[] = {
{
.name = "NTSC-M",
.clock = 107520,

21
drivers/gpu/drm/radeon/radeon_cp.c
View file

@ -557,8 +557,10 @@ static int radeon_do_engine_reset(struct drm_device * dev)
}
static void radeon_cp_init_ring_buffer(struct drm_device * dev,
drm_radeon_private_t * dev_priv)
drm_radeon_private_t *dev_priv,
struct drm_file *file_priv)
{
struct drm_radeon_master_private *master_priv;
u32 ring_start, cur_read_ptr;
u32 tmp;
@ -677,6 +679,14 @@ static void radeon_cp_init_ring_buffer(struct drm_device * dev,
dev_priv->scratch[2] = 0;
RADEON_WRITE(RADEON_LAST_CLEAR_REG, 0);
/* reset sarea copies of these */
master_priv = file_priv->master->driver_priv;
if (master_priv->sarea_priv) {
master_priv->sarea_priv->last_frame = 0;
master_priv->sarea_priv->last_dispatch = 0;
master_priv->sarea_priv->last_clear = 0;
}
radeon_do_wait_for_idle(dev_priv);
/* Sync everything up */
@ -1215,7 +1225,7 @@ static int radeon_do_init_cp(struct drm_device *dev, drm_radeon_init_t *init,
}
radeon_cp_load_microcode(dev_priv);
radeon_cp_init_ring_buffer(dev, dev_priv);
radeon_cp_init_ring_buffer(dev, dev_priv, file_priv);
dev_priv->last_buf = 0;
@ -1281,7 +1291,7 @@ static int radeon_do_cleanup_cp(struct drm_device * dev)
*
* Charl P. Botha <http://cpbotha.net>
*/
static int radeon_do_resume_cp(struct drm_device * dev)
static int radeon_do_resume_cp(struct drm_device *dev, struct drm_file *file_priv)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
@ -1304,7 +1314,7 @@ static int radeon_do_resume_cp(struct drm_device * dev)
}
radeon_cp_load_microcode(dev_priv);
radeon_cp_init_ring_buffer(dev, dev_priv);
radeon_cp_init_ring_buffer(dev, dev_priv, file_priv);
radeon_do_engine_reset(dev);
radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
@ -1479,8 +1489,7 @@ int radeon_cp_idle(struct drm_device *dev, void *data, struct drm_file *file_pri
*/
int radeon_cp_resume(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
return radeon_do_resume_cp(dev);
return radeon_do_resume_cp(dev, file_priv);
}
int radeon_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)

6
drivers/parport/parport_atari.c
View file

@ -84,7 +84,7 @@ parport_atari_frob_control(struct parport *p, unsigned char mask,
static unsigned char
parport_atari_read_status(struct parport *p)
{
return ((mfp.par_dt_reg & 1 ? 0 : PARPORT_STATUS_BUSY) |
return ((st_mfp.par_dt_reg & 1 ? 0 : PARPORT_STATUS_BUSY) |
PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR);
}
@ -193,9 +193,9 @@ static int __init parport_atari_init(void)
sound_ym.wd_data = sound_ym.rd_data_reg_sel | (1 << 5);
local_irq_restore(flags);
/* MFP port I0 as input. */
mfp.data_dir &= ~1;
st_mfp.data_dir &= ~1;
/* MFP port I0 interrupt on high->low edge. */
mfp.active_edge &= ~1;
st_mfp.active_edge &= ~1;
p = parport_register_port((unsigned long)&sound_ym.wd_data,
IRQ_MFP_BUSY, PARPORT_DMA_NONE,
&parport_atari_ops);

25
drivers/platform/x86/fujitsu-laptop.c
View file

@ -166,6 +166,7 @@ struct fujitsu_hotkey_t {
struct platform_device *pf_device;
struct kfifo *fifo;
spinlock_t fifo_lock;
int rfkill_supported;
int rfkill_state;
int logolamp_registered;
int kblamps_registered;
@ -526,7 +527,7 @@ static ssize_t
show_lid_state(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
if (!(fujitsu_hotkey->rfkill_supported & 0x100))
return sprintf(buf, "unknown\n");
if (fujitsu_hotkey->rfkill_state & 0x100)
return sprintf(buf, "open\n");
@ -538,7 +539,7 @@ static ssize_t
show_dock_state(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
if (!(fujitsu_hotkey->rfkill_supported & 0x200))
return sprintf(buf, "unknown\n");
if (fujitsu_hotkey->rfkill_state & 0x200)
return sprintf(buf, "docked\n");
@ -550,7 +551,7 @@ static ssize_t
show_radios_state(struct device *dev,
struct device_attribute *attr, char *buf)
{
if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
if (!(fujitsu_hotkey->rfkill_supported & 0x20))
return sprintf(buf, "unknown\n");
if (fujitsu_hotkey->rfkill_state & 0x20)
return sprintf(buf, "on\n");
@ -928,8 +929,17 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
; /* No action, result is discarded */
vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
fujitsu_hotkey->rfkill_state =
call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
fujitsu_hotkey->rfkill_supported =
call_fext_func(FUNC_RFKILL, 0x0, 0x0, 0x0);
/* Make sure our bitmask of supported functions is cleared if the
RFKILL function block is not implemented, like on the S7020. */
if (fujitsu_hotkey->rfkill_supported == UNSUPPORTED_CMD)
fujitsu_hotkey->rfkill_supported = 0;
if (fujitsu_hotkey->rfkill_supported)
fujitsu_hotkey->rfkill_state =
call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
/* Suspect this is a keymap of the application panel, print it */
printk(KERN_INFO "fujitsu-laptop: BTNI: [0x%x]\n",
@ -1005,8 +1015,9 @@ static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
input = fujitsu_hotkey->input;
fujitsu_hotkey->rfkill_state =
call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
if (fujitsu_hotkey->rfkill_supported)
fujitsu_hotkey->rfkill_state =
call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
switch (event) {
case ACPI_FUJITSU_NOTIFY_CODE1:

15
drivers/scsi/ibmvscsi/ibmvfc.c
View file

@ -1573,9 +1573,6 @@ static int ibmvfc_queuecommand(struct scsi_cmnd *cmnd,
vfc_cmd->resp_len = sizeof(vfc_cmd->rsp);
vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata;
vfc_cmd->tgt_scsi_id = rport->port_id;
if ((rport->supported_classes & FC_COS_CLASS3) &&
(fc_host_supported_classes(vhost->host) & FC_COS_CLASS3))
vfc_cmd->flags = IBMVFC_CLASS_3_ERR;
vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd);
int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun);
memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len);
@ -3266,6 +3263,7 @@ static int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id)
return -ENOMEM;
}
memset(tgt, 0, sizeof(*tgt));
tgt->scsi_id = scsi_id;
tgt->new_scsi_id = scsi_id;
tgt->vhost = vhost;
@ -3576,9 +3574,18 @@ static void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events)
static void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt)
{
struct ibmvfc_host *vhost = tgt->vhost;
struct fc_rport *rport;
struct fc_rport *rport = tgt->rport;
unsigned long flags;
if (rport) {
tgt_dbg(tgt, "Setting rport roles\n");
fc_remote_port_rolechg(rport, tgt->ids.roles);
spin_lock_irqsave(vhost->host->host_lock, flags);
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
return;
}
tgt_dbg(tgt, "Adding rport\n");
rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
spin_lock_irqsave(vhost->host->host_lock, flags);

2
drivers/scsi/ibmvscsi/ibmvfc.h
View file

@ -32,7 +32,7 @@
#define IBMVFC_DRIVER_VERSION "1.0.4"
#define IBMVFC_DRIVER_DATE "(November 14, 2008)"
#define IBMVFC_DEFAULT_TIMEOUT 15
#define IBMVFC_DEFAULT_TIMEOUT 60
#define IBMVFC_INIT_TIMEOUT 120
#define IBMVFC_MAX_REQUESTS_DEFAULT 100

1
drivers/scsi/ibmvscsi/ibmvscsi.c
View file

@ -432,6 +432,7 @@ static int map_sg_data(struct scsi_cmnd *cmd,
sdev_printk(KERN_ERR, cmd->device,
"Can't allocate memory "
"for indirect table\n");
scsi_dma_unmap(cmd);
return 0;
}
}

3
drivers/scsi/libiscsi.c
View file

@ -1998,6 +1998,8 @@ int iscsi_host_add(struct Scsi_Host *shost, struct device *pdev)
if (!shost->can_queue)
shost->can_queue = ISCSI_DEF_XMIT_CMDS_MAX;
if (!shost->transportt->eh_timed_out)
shost->transportt->eh_timed_out = iscsi_eh_cmd_timed_out;
return scsi_add_host(shost, pdev);
}
EXPORT_SYMBOL_GPL(iscsi_host_add);
@ -2020,7 +2022,6 @@ struct Scsi_Host *iscsi_host_alloc(struct scsi_host_template *sht,
shost = scsi_host_alloc(sht, sizeof(struct iscsi_host) + dd_data_size);
if (!shost)
return NULL;
shost->transportt->eh_timed_out = iscsi_eh_cmd_timed_out;
if (qdepth > ISCSI_MAX_CMD_PER_LUN || qdepth < 1) {
if (qdepth != 0)

1
drivers/scsi/lpfc/lpfc_els.c
View file

@ -5258,6 +5258,7 @@ lpfc_send_els_event(struct lpfc_vport *vport,
sizeof(struct lpfc_name));
break;
default:
kfree(els_data);
return;
}
memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));

13
drivers/scsi/qla2xxx/qla_attr.c
View file

@ -1265,13 +1265,6 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags))
msleep(1000);
if (ha->mqenable) {
if (qla25xx_delete_queues(vha, 0) != QLA_SUCCESS)
qla_printk(KERN_WARNING, ha,
"Queue delete failed.\n");
vha->req_ques[0] = ha->req_q_map[0]->id;
}
qla24xx_disable_vp(vha);
fc_remove_host(vha->host);
@ -1293,6 +1286,12 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
vha->host_no, vha->vp_idx, vha));
}
if (ha->mqenable) {
if (qla25xx_delete_queues(vha, 0) != QLA_SUCCESS)
qla_printk(KERN_WARNING, ha,
"Queue delete failed.\n");
}
scsi_host_put(vha->host);
qla_printk(KERN_INFO, ha, "vport %d deleted\n", id);
return 0;

5
drivers/scsi/qla2xxx/qla_def.h
View file

@ -2135,6 +2135,7 @@ struct qla_msix_entry {
/* Work events. */
enum qla_work_type {
QLA_EVT_AEN,
QLA_EVT_IDC_ACK,
};
@ -2149,6 +2150,10 @@ struct qla_work_evt {
enum fc_host_event_code code;
u32 data;
} aen;
struct {
#define QLA_IDC_ACK_REGS 7
uint16_t mb[QLA_IDC_ACK_REGS];
} idc_ack;
} u;
};

2
drivers/scsi/qla2xxx/qla_devtbl.h
View file

@ -72,7 +72,7 @@ static char *qla2x00_model_name[QLA_MODEL_NAMES*2] = {
"QLA2462", "Sun PCI-X 2.0 to 4Gb FC, Dual Channel", /* 0x141 */
"QLE2460", "Sun PCI-Express to 2Gb FC, Single Channel", /* 0x142 */
"QLE2462", "Sun PCI-Express to 4Gb FC, Single Channel", /* 0x143 */
"QEM2462" "Server I/O Module 4Gb FC, Dual Channel", /* 0x144 */
"QEM2462", "Server I/O Module 4Gb FC, Dual Channel", /* 0x144 */
"QLE2440", "PCI-Express to 4Gb FC, Single Channel", /* 0x145 */
"QLE2464", "PCI-Express to 4Gb FC, Quad Channel", /* 0x146 */
"QLA2440", "PCI-X 2.0 to 4Gb FC, Single Channel", /* 0x147 */

2
drivers/scsi/qla2xxx/qla_fw.h
View file

@ -1402,6 +1402,8 @@ struct access_chip_rsp_84xx {
#define MBA_IDC_NOTIFY 0x8101
#define MBA_IDC_TIME_EXT 0x8102
#define MBC_IDC_ACK 0x101
struct nvram_81xx {
/* NVRAM header. */
uint8_t id[4];

9
drivers/scsi/qla2xxx/qla_gbl.h
View file

@ -72,6 +72,7 @@ extern int qla2x00_loop_reset(scsi_qla_host_t *);
extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);
extern int qla2x00_post_aen_work(struct scsi_qla_host *, enum
fc_host_event_code, u32);
extern int qla2x00_post_idc_ack_work(struct scsi_qla_host *, uint16_t *);
extern void qla2x00_abort_fcport_cmds(fc_port_t *);
extern struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *,
@ -266,6 +267,8 @@ qla2x00_set_idma_speed(scsi_qla_host_t *, uint16_t, uint16_t, uint16_t *);
extern int qla84xx_verify_chip(struct scsi_qla_host *, uint16_t *);
extern int qla81xx_idc_ack(scsi_qla_host_t *, uint16_t *);
/*
* Global Function Prototypes in qla_isr.c source file.
*/
@ -376,10 +379,8 @@ extern int qla2x00_dfs_remove(scsi_qla_host_t *);
/* Globa function prototypes for multi-q */
extern int qla25xx_request_irq(struct rsp_que *);
extern int qla25xx_init_req_que(struct scsi_qla_host *, struct req_que *,
uint8_t);
extern int qla25xx_init_rsp_que(struct scsi_qla_host *, struct rsp_que *,
uint8_t);
extern int qla25xx_init_req_que(struct scsi_qla_host *, struct req_que *);
extern int qla25xx_init_rsp_que(struct scsi_qla_host *, struct rsp_que *);
extern int qla25xx_create_req_que(struct qla_hw_data *, uint16_t, uint8_t,
uint16_t, uint8_t, uint8_t);
extern int qla25xx_create_rsp_que(struct qla_hw_data *, uint16_t, uint8_t,

7
drivers/scsi/qla2xxx/qla_init.c
View file

@ -1226,9 +1226,8 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
icb->firmware_options_2 |=
__constant_cpu_to_le32(BIT_18);
icb->firmware_options_2 |= __constant_cpu_to_le32(BIT_22);
icb->firmware_options_2 &= __constant_cpu_to_le32(~BIT_22);
icb->firmware_options_2 |= __constant_cpu_to_le32(BIT_23);
ha->rsp_q_map[0]->options = icb->firmware_options_2;
WRT_REG_DWORD(&reg->isp25mq.req_q_in, 0);
WRT_REG_DWORD(&reg->isp25mq.req_q_out, 0);
@ -3493,7 +3492,7 @@ qla25xx_init_queues(struct qla_hw_data *ha)
rsp = ha->rsp_q_map[i];
if (rsp) {
rsp->options &= ~BIT_0;
ret = qla25xx_init_rsp_que(base_vha, rsp, rsp->options);
ret = qla25xx_init_rsp_que(base_vha, rsp);
if (ret != QLA_SUCCESS)
DEBUG2_17(printk(KERN_WARNING
"%s Rsp que:%d init failed\n", __func__,
@ -3507,7 +3506,7 @@ qla25xx_init_queues(struct qla_hw_data *ha)
if (req) {
/* Clear outstanding commands array. */
req->options &= ~BIT_0;
ret = qla25xx_init_req_que(base_vha, req, req->options);
ret = qla25xx_init_req_que(base_vha, req);
if (ret != QLA_SUCCESS)
DEBUG2_17(printk(KERN_WARNING
"%s Req que:%d init failed\n", __func__,

58
drivers/scsi/qla2xxx/qla_isr.c
View file

@ -266,6 +266,40 @@ qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
}
}
static void
qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
{
static char *event[] =
{ "Complete", "Request Notification", "Time Extension" };
int rval;
struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
uint16_t __iomem *wptr;
uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
/* Seed data -- mailbox1 -> mailbox7. */
wptr = (uint16_t __iomem *)&reg24->mailbox1;
for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
mb[cnt] = RD_REG_WORD(wptr);
DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
"%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
event[aen & 0xff],
mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
/* Acknowledgement needed? [Notify && non-zero timeout]. */
timeout = (descr >> 8) & 0xf;
if (aen != MBA_IDC_NOTIFY || !timeout)
return;
DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
"ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
rval = qla2x00_post_idc_ack_work(vha, mb);
if (rval != QLA_SUCCESS)
qla_printk(KERN_WARNING, vha->hw,
"IDC failed to post ACK.\n");
}
/**
* qla2x00_async_event() - Process aynchronous events.
* @ha: SCSI driver HA context
@ -714,21 +748,9 @@ skip_rio:
"%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
break;
case MBA_IDC_COMPLETE:
DEBUG2(printk("scsi(%ld): Inter-Driver Commucation "
"Complete -- %04x %04x %04x\n", vha->host_no, mb[1], mb[2],
mb[3]));
break;
case MBA_IDC_NOTIFY:
DEBUG2(printk("scsi(%ld): Inter-Driver Commucation "
"Request Notification -- %04x %04x %04x\n", vha->host_no,
mb[1], mb[2], mb[3]));
/**** Mailbox registers 4 - 7 valid!!! */
break;
case MBA_IDC_TIME_EXT:
DEBUG2(printk("scsi(%ld): Inter-Driver Commucation "
"Time Extension -- %04x %04x %04x\n", vha->host_no, mb[1],
mb[2], mb[3]));
/**** Mailbox registers 4 - 7 valid!!! */
qla81xx_idc_event(vha, mb[0], mb[1]);
break;
}
@ -1707,7 +1729,6 @@ qla25xx_msix_rsp_q(int irq, void *dev_id)
struct qla_hw_data *ha;
struct rsp_que *rsp;
struct device_reg_24xx __iomem *reg;
uint16_t msix_disabled_hccr = 0;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
@ -1720,17 +1741,8 @@ qla25xx_msix_rsp_q(int irq, void *dev_id)
spin_lock_irq(&ha->hardware_lock);
msix_disabled_hccr = rsp->options;
if (!rsp->id)
msix_disabled_hccr &= __constant_cpu_to_le32(BIT_22);
else
msix_disabled_hccr &= __constant_cpu_to_le32(BIT_6);
qla24xx_process_response_queue(rsp);
if (!msix_disabled_hccr)
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
spin_unlock_irq(&ha->hardware_lock);
return IRQ_HANDLED;

40
drivers/scsi/qla2xxx/qla_mbx.c
View file

@ -3090,8 +3090,7 @@ verify_done:
}
int
qla25xx_init_req_que(struct scsi_qla_host *vha, struct req_que *req,
uint8_t options)
qla25xx_init_req_que(struct scsi_qla_host *vha, struct req_que *req)
{
int rval;
unsigned long flags;
@ -3101,7 +3100,7 @@ qla25xx_init_req_que(struct scsi_qla_host *vha, struct req_que *req,
struct qla_hw_data *ha = vha->hw;
mcp->mb[0] = MBC_INITIALIZE_MULTIQ;
mcp->mb[1] = options;
mcp->mb[1] = req->options;
mcp->mb[2] = MSW(LSD(req->dma));
mcp->mb[3] = LSW(LSD(req->dma));
mcp->mb[6] = MSW(MSD(req->dma));
@ -3128,7 +3127,7 @@ qla25xx_init_req_que(struct scsi_qla_host *vha, struct req_que *req,
mcp->tov = 60;
spin_lock_irqsave(&ha->hardware_lock, flags);
if (!(options & BIT_0)) {
if (!(req->options & BIT_0)) {
WRT_REG_DWORD(&reg->req_q_in, 0);
WRT_REG_DWORD(&reg->req_q_out, 0);
}
@ -3142,8 +3141,7 @@ qla25xx_init_req_que(struct scsi_qla_host *vha, struct req_que *req,
}
int
qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp,
uint8_t options)
qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
{
int rval;
unsigned long flags;
@ -3153,7 +3151,7 @@ qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp,
struct qla_hw_data *ha = vha->hw;
mcp->mb[0] = MBC_INITIALIZE_MULTIQ;
mcp->mb[1] = options;
mcp->mb[1] = rsp->options;
mcp->mb[2] = MSW(LSD(rsp->dma));
mcp->mb[3] = LSW(LSD(rsp->dma));
mcp->mb[6] = MSW(MSD(rsp->dma));
@ -3178,7 +3176,7 @@ qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp,
mcp->tov = 60;
spin_lock_irqsave(&ha->hardware_lock, flags);
if (!(options & BIT_0)) {
if (!(rsp->options & BIT_0)) {
WRT_REG_DWORD(&reg->rsp_q_out, 0);
WRT_REG_DWORD(&reg->rsp_q_in, 0);
}
@ -3193,3 +3191,29 @@ qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp,
return rval;
}
int
qla81xx_idc_ack(scsi_qla_host_t *vha, uint16_t *mb)
{
int rval;
mbx_cmd_t mc;
mbx_cmd_t *mcp = &mc;
DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));
mcp->mb[0] = MBC_IDC_ACK;
memcpy(&mcp->mb[1], mb, QLA_IDC_ACK_REGS * sizeof(uint16_t));
mcp->out_mb = MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
mcp->in_mb = MBX_0;
mcp->tov = MBX_TOV_SECONDS;
mcp->flags = 0;
rval = qla2x00_mailbox_command(vha, mcp);
if (rval != QLA_SUCCESS) {
DEBUG2_3_11(printk("%s(%ld): failed=%x (%x).\n", __func__,
vha->host_no, rval, mcp->mb[0]));
} else {
DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no));
}
return rval;
}

12
drivers/scsi/qla2xxx/qla_mid.c
View file

@ -396,7 +396,7 @@ qla24xx_create_vhost(struct fc_vport *fc_vport)
qla2x00_start_timer(vha, qla2x00_timer, WATCH_INTERVAL);
memset(vha->req_ques, 0, sizeof(vha->req_ques) * QLA_MAX_HOST_QUES);
memset(vha->req_ques, 0, sizeof(vha->req_ques));
vha->req_ques[0] = ha->req_q_map[0]->id;
host->can_queue = ha->req_q_map[0]->length + 128;
host->this_id = 255;
@ -471,7 +471,7 @@ qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
if (req) {
req->options |= BIT_0;
ret = qla25xx_init_req_que(vha, req, req->options);
ret = qla25xx_init_req_que(vha, req);
}
if (ret == QLA_SUCCESS)
qla25xx_free_req_que(vha, req);
@ -486,7 +486,7 @@ qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
if (rsp) {
rsp->options |= BIT_0;
ret = qla25xx_init_rsp_que(vha, rsp, rsp->options);
ret = qla25xx_init_rsp_que(vha, rsp);
}
if (ret == QLA_SUCCESS)
qla25xx_free_rsp_que(vha, rsp);
@ -502,7 +502,7 @@ int qla25xx_update_req_que(struct scsi_qla_host *vha, uint8_t que, uint8_t qos)
req->options |= BIT_3;
req->qos = qos;
ret = qla25xx_init_req_que(vha, req, req->options);
ret = qla25xx_init_req_que(vha, req);
if (ret != QLA_SUCCESS)
DEBUG2_17(printk(KERN_WARNING "%s failed\n", __func__));
/* restore options bit */
@ -632,7 +632,7 @@ qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options,
req->max_q_depth = ha->req_q_map[0]->max_q_depth;
mutex_unlock(&ha->vport_lock);
ret = qla25xx_init_req_que(base_vha, req, options);
ret = qla25xx_init_req_que(base_vha, req);
if (ret != QLA_SUCCESS) {
qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
mutex_lock(&ha->vport_lock);
@ -710,7 +710,7 @@ qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options,
if (ret)
goto que_failed;
ret = qla25xx_init_rsp_que(base_vha, rsp, options);
ret = qla25xx_init_rsp_que(base_vha, rsp);
if (ret != QLA_SUCCESS) {
qla_printk(KERN_WARNING, ha, "%s failed\n", __func__);
mutex_lock(&ha->vport_lock);

16
drivers/scsi/qla2xxx/qla_os.c
View file

@ -2522,6 +2522,19 @@ qla2x00_post_aen_work(struct scsi_qla_host *vha, enum fc_host_event_code code,
return qla2x00_post_work(vha, e, 1);
}
int
qla2x00_post_idc_ack_work(struct scsi_qla_host *vha, uint16_t *mb)
{
struct qla_work_evt *e;
e = qla2x00_alloc_work(vha, QLA_EVT_IDC_ACK, 1);
if (!e)
return QLA_FUNCTION_FAILED;
memcpy(e->u.idc_ack.mb, mb, QLA_IDC_ACK_REGS * sizeof(uint16_t));
return qla2x00_post_work(vha, e, 1);
}
static void
qla2x00_do_work(struct scsi_qla_host *vha)
{
@ -2539,6 +2552,9 @@ qla2x00_do_work(struct scsi_qla_host *vha)
fc_host_post_event(vha->host, fc_get_event_number(),
e->u.aen.code, e->u.aen.data);
break;
case QLA_EVT_IDC_ACK:
qla81xx_idc_ack(vha, e->u.idc_ack.mb);
break;
}
if (e->flags & QLA_EVT_FLAG_FREE)
kfree(e);

2
drivers/scsi/qla2xxx/qla_sup.c
View file

@ -684,7 +684,7 @@ qla2xxx_get_flt_info(scsi_qla_host_t *vha, uint32_t flt_addr)
"end=0x%x size=0x%x.\n", le32_to_cpu(region->code), start,
le32_to_cpu(region->end) >> 2, le32_to_cpu(region->size)));
switch (le32_to_cpu(region->code)) {
switch (le32_to_cpu(region->code) & 0xff) {
case FLT_REG_FW:
ha->flt_region_fw = start;
break;

2
drivers/scsi/qla2xxx/qla_version.h
View file

@ -7,7 +7,7 @@
/*
* Driver version
*/
#define QLA2XXX_VERSION "8.03.00-k2"
#define QLA2XXX_VERSION "8.03.00-k3"
#define QLA_DRIVER_MAJOR_VER 8
#define QLA_DRIVER_MINOR_VER 3

1
drivers/scsi/scsi_scan.c
View file

@ -317,6 +317,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
return sdev;
out_device_destroy:
scsi_device_set_state(sdev, SDEV_DEL);
transport_destroy_device(&sdev->sdev_gendev);
put_device(&sdev->sdev_gendev);
out:

2
drivers/scsi/sg.c
View file

@ -1078,7 +1078,7 @@ sg_ioctl(struct inode *inode, struct file *filp,
case BLKTRACESETUP:
return blk_trace_setup(sdp->device->request_queue,
sdp->disk->disk_name,
sdp->device->sdev_gendev.devt,
MKDEV(SCSI_GENERIC_MAJOR, sdp->index),
(char *)arg);
case BLKTRACESTART:
return blk_trace_startstop(sdp->device->request_queue, 1);

15
drivers/serial/8250.c
View file

@ -2083,6 +2083,20 @@ static int serial8250_startup(struct uart_port *port)
serial8250_set_mctrl(&up->port, up->port.mctrl);
/* Serial over Lan (SoL) hack:
Intel 8257x Gigabit ethernet chips have a
16550 emulation, to be used for Serial Over Lan.
Those chips take a longer time than a normal
serial device to signalize that a transmission
data was queued. Due to that, the above test generally
fails. One solution would be to delay the reading of
iir. However, this is not reliable, since the timeout
is variable. So, let's just don't test if we receive
TX irq. This way, we'll never enable UART_BUG_TXEN.
*/
if (up->port.flags & UPF_NO_TXEN_TEST)
goto dont_test_tx_en;
/*
* Do a quick test to see if we receive an
* interrupt when we enable the TX irq.
@ -2102,6 +2116,7 @@ static int serial8250_startup(struct uart_port *port)
up->bugs &= ~UART_BUG_TXEN;
}
dont_test_tx_en:
spin_unlock_irqrestore(&up->port.lock, flags);
/*

36
drivers/serial/8250_pci.c
View file

@ -798,6 +798,21 @@ pci_default_setup(struct serial_private *priv,
return setup_port(priv, port, bar, offset, board->reg_shift);
}
static int skip_tx_en_setup(struct serial_private *priv,
const struct pciserial_board *board,
struct uart_port *port, int idx)
{
port->flags |= UPF_NO_TXEN_TEST;
printk(KERN_DEBUG "serial8250: skipping TxEn test for device "
"[%04x:%04x] subsystem [%04x:%04x]\n",
priv->dev->vendor,
priv->dev->device,
priv->dev->subsystem_vendor,
priv->dev->subsystem_device);
return pci_default_setup(priv, board, port, idx);
}
/* This should be in linux/pci_ids.h */
#define PCI_VENDOR_ID_SBSMODULARIO 0x124B
#define PCI_SUBVENDOR_ID_SBSMODULARIO 0x124B
@ -864,6 +879,27 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.init = pci_inteli960ni_init,
.setup = pci_default_setup,
},
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_8257X_SOL,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = skip_tx_en_setup,
},
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_82573L_SOL,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = skip_tx_en_setup,
},
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_82573E_SOL,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = skip_tx_en_setup,
},
/*
* ITE
*/

22
drivers/video/atafb.c
View file

@ -841,7 +841,7 @@ static int tt_detect(void)
tt_dmasnd.ctrl = DMASND_CTRL_OFF;
udelay(20); /* wait a while for things to settle down */
}
mono_moni = (mfp.par_dt_reg & 0x80) == 0;
mono_moni = (st_mfp.par_dt_reg & 0x80) == 0;
tt_get_par(&par);
tt_encode_var(&atafb_predefined[0], &par);
@ -2035,7 +2035,7 @@ static int stste_detect(void)
tt_dmasnd.ctrl = DMASND_CTRL_OFF;
udelay(20); /* wait a while for things to settle down */
}
mono_moni = (mfp.par_dt_reg & 0x80) == 0;
mono_moni = (st_mfp.par_dt_reg & 0x80) == 0;
stste_get_par(&par);
stste_encode_var(&atafb_predefined[0], &par);
@ -2086,20 +2086,20 @@ static void st_ovsc_switch(void)
return;
local_irq_save(flags);
mfp.tim_ct_b = 0x10;
mfp.active_edge |= 8;
mfp.tim_ct_b = 0;
mfp.tim_dt_b = 0xf0;
mfp.tim_ct_b = 8;
while (mfp.tim_dt_b > 1) /* TOS does it this way, don't ask why */
st_mfp.tim_ct_b = 0x10;
st_mfp.active_edge |= 8;
st_mfp.tim_ct_b = 0;
st_mfp.tim_dt_b = 0xf0;
st_mfp.tim_ct_b = 8;
while (st_mfp.tim_dt_b > 1) /* TOS does it this way, don't ask why */
;
new = mfp.tim_dt_b;
new = st_mfp.tim_dt_b;
do {
udelay(LINE_DELAY);
old = new;
new = mfp.tim_dt_b;
new = st_mfp.tim_dt_b;
} while (old != new);
mfp.tim_ct_b = 0x10;
st_mfp.tim_ct_b = 0x10;
udelay(SYNC_DELAY);
if (atari_switches & ATARI_SWITCH_OVSC_IKBD)

1
drivers/video/aty/aty128fb.c
View file

@ -2365,7 +2365,6 @@ static void fbcon_aty128_bmove(struct display *p, int sy, int sx, int dy, int dx
static void aty128_set_suspend(struct aty128fb_par *par, int suspend)
{
u32 pmgt;
u16 pwr_command;
struct pci_dev *pdev = par->pdev;
if (!par->pm_reg)

8
drivers/xen/manage.c
View file

@ -45,6 +45,13 @@ static int xen_suspend(void *data)
err);
return err;
}
err = sysdev_suspend(PMSG_SUSPEND);
if (err) {
printk(KERN_ERR "xen_suspend: sysdev_suspend failed: %d\n",
err);
device_power_up(PMSG_RESUME);
return err;
}
xen_mm_pin_all();
gnttab_suspend();
@ -61,6 +68,7 @@ static int xen_suspend(void *data)
gnttab_resume();
xen_mm_unpin_all();
sysdev_resume();
device_power_up(PMSG_RESUME);
if (!*cancelled) {

8
fs/btrfs/file.c
View file

@ -1222,7 +1222,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
/*
* ok we haven't committed the transaction yet, lets do a commit
*/
if (file->private_data)
if (file && file->private_data)
btrfs_ioctl_trans_end(file);
trans = btrfs_start_transaction(root, 1);
@ -1231,7 +1231,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
goto out;
}
ret = btrfs_log_dentry_safe(trans, root, file->f_dentry);
ret = btrfs_log_dentry_safe(trans, root, dentry);
if (ret < 0)
goto out;
@ -1245,7 +1245,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
* file again, but that will end up using the synchronization
* inside btrfs_sync_log to keep things safe.
*/
mutex_unlock(&file->f_dentry->d_inode->i_mutex);
mutex_unlock(&dentry->d_inode->i_mutex);
if (ret > 0) {
ret = btrfs_commit_transaction(trans, root);
@ -1253,7 +1253,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
btrfs_sync_log(trans, root);
ret = btrfs_end_transaction(trans, root);
}
mutex_lock(&file->f_dentry->d_inode->i_mutex);
mutex_lock(&dentry->d_inode->i_mutex);
out:
return ret > 0 ? EIO : ret;
}

15
fs/cifs/CHANGES
View file

@ -1,3 +1,13 @@
Version 1.57
------------
Improve support for multiple security contexts to the same server. We
used to use the same "vcnumber" for all connections which could cause
the server to treat subsequent connections, especially those that
are authenticated as guest, as reconnections, invalidating the earlier
user's smb session. This fix allows cifs to mount multiple times to the
same server with different userids without risking invalidating earlier
established security contexts.
Version 1.56
------------
Add "forcemandatorylock" mount option to allow user to use mandatory
@ -7,7 +17,10 @@ specified and user does not have access to query information about the
top of the share. Fix problem in 2.6.28 resolving DFS paths to
Samba servers (worked to Windows). Fix rmdir so that pending search
(readdir) requests do not get invalid results which include the now
removed directory.
removed directory. Fix oops in cifs_dfs_ref.c when prefixpath is not reachable
when using DFS. Add better file create support to servers which support
the CIFS POSIX protocol extensions (this adds support for new flags
on create, and improves semantics for write of locked ranges).
Version 1.55
------------

2
fs/cifs/cifsfs.h
View file

@ -100,5 +100,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
extern const struct export_operations cifs_export_ops;
#endif /* EXPERIMENTAL */
#define CIFS_VERSION "1.56"
#define CIFS_VERSION "1.57"
#endif /* _CIFSFS_H */

6
fs/cifs/cifsglob.h
View file

@ -164,9 +164,12 @@ struct TCP_Server_Info {
/* multiplexed reads or writes */
unsigned int maxBuf; /* maxBuf specifies the maximum */
/* message size the server can send or receive for non-raw SMBs */
unsigned int maxRw; /* maxRw specifies the maximum */
unsigned int max_rw; /* maxRw specifies the maximum */
/* message size the server can send or receive for */
/* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */
unsigned int max_vcs; /* maximum number of smb sessions, at least
those that can be specified uniquely with
vcnumbers */
char sessid[4]; /* unique token id for this session */
/* (returned on Negotiate */
int capabilities; /* allow selective disabling of caps by smb sess */
@ -210,6 +213,7 @@ struct cifsSesInfo {
unsigned overrideSecFlg; /* if non-zero override global sec flags */
__u16 ipc_tid; /* special tid for connection to IPC share */
__u16 flags;
__u16 vcnum;
char *serverOS; /* name of operating system underlying server */
char *serverNOS; /* name of network operating system of server */
char *serverDomain; /* security realm of server */

4
fs/cifs/cifsproto.h
View file

@ -42,6 +42,7 @@ extern void _FreeXid(unsigned int);
#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current_fsuid()));
#define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__func__,curr_xid,(int)rc));}
extern char *build_path_from_dentry(struct dentry *);
extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb);
extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
/* extern void renew_parental_timestamps(struct dentry *direntry);*/
extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
@ -91,6 +92,9 @@ extern u64 cifs_UnixTimeToNT(struct timespec);
extern __le64 cnvrtDosCifsTm(__u16 date, __u16 time);
extern struct timespec cnvrtDosUnixTm(__u16 date, __u16 time);
extern void posix_fill_in_inode(struct inode *tmp_inode,
FILE_UNIX_BASIC_INFO *pData, int isNewInode);
extern struct inode *cifs_new_inode(struct super_block *sb, __u64 *inum);
extern int cifs_get_inode_info(struct inode **pinode,
const unsigned char *search_path,
FILE_ALL_INFO *pfile_info,

7
fs/cifs/cifssmb.c
View file

@ -528,14 +528,15 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
server->maxReq = le16_to_cpu(rsp->MaxMpxCount);
server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize),
(__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs);
GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey);
/* even though we do not use raw we might as well set this
accurately, in case we ever find a need for it */
if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
server->maxRw = 0xFF00;
server->max_rw = 0xFF00;
server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE;
} else {
server->maxRw = 0;/* we do not need to use raw anyway */
server->max_rw = 0;/* do not need to use raw anyway */
server->capabilities = CAP_MPX_MODE;
}
tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
@ -638,7 +639,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
/* probably no need to store and check maxvcs */
server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize),
(__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf));
GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
server->capabilities = le32_to_cpu(pSMBr->Capabilities);

51
fs/cifs/connect.c
View file

@ -23,7 +23,6 @@
#include <linux/string.h>
#include <linux/list.h>
#include <linux/wait.h>
#include <linux/ipv6.h>
#include <linux/pagemap.h>
#include <linux/ctype.h>
#include <linux/utsname.h>
@ -35,6 +34,7 @@
#include <linux/freezer.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <net/ipv6.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
@ -1379,8 +1379,8 @@ cifs_find_tcp_session(struct sockaddr_storage *addr)
server->addr.sockAddr.sin_addr.s_addr))
continue;
else if (addr->ss_family == AF_INET6 &&
memcmp(&server->addr.sockAddr6.sin6_addr,
&addr6->sin6_addr, sizeof(addr6->sin6_addr)))
!ipv6_addr_equal(&server->addr.sockAddr6.sin6_addr,
&addr6->sin6_addr))
continue;
++server->srv_count;
@ -2180,6 +2180,33 @@ static void setup_cifs_sb(struct smb_vol *pvolume_info,
"mount option supported"));
}
static int
is_path_accessible(int xid, struct cifsTconInfo *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path)
{
int rc;
__u64 inode_num;
FILE_ALL_INFO *pfile_info;
rc = CIFSGetSrvInodeNumber(xid, tcon, full_path, &inode_num,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != -EOPNOTSUPP)
return rc;
pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (pfile_info == NULL)
return -ENOMEM;
rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info,
0 /* not legacy */, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
kfree(pfile_info);
return rc;
}
int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
char *mount_data, const char *devname)
@ -2190,6 +2217,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
struct cifsSesInfo *pSesInfo = NULL;
struct cifsTconInfo *tcon = NULL;
struct TCP_Server_Info *srvTcp = NULL;
char *full_path;
xid = GetXid();
@ -2426,6 +2454,23 @@ mount_fail_check:
cifs_sb->rsize = min(cifs_sb->rsize,
(tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
if (!rc && cifs_sb->prepathlen) {
/* build_path_to_root works only when we have a valid tcon */
full_path = cifs_build_path_to_root(cifs_sb);
if (full_path == NULL) {
rc = -ENOMEM;
goto mount_fail_check;
}
rc = is_path_accessible(xid, tcon, cifs_sb, full_path);
if (rc) {
cERROR(1, ("Path %s in not accessible: %d",
full_path, rc));
kfree(full_path);
goto mount_fail_check;
}
kfree(full_path);
}
/* volume_info->password is freed above when existing session found
(in which case it is not needed anymore) but when new sesion is created
the password ptr is put in the new session structure (in which case the

301
fs/cifs/dir.c
View file

@ -3,7 +3,7 @@
*
* vfs operations that deal with dentries
*
* Copyright (C) International Business Machines Corp., 2002,2008
* Copyright (C) International Business Machines Corp., 2002,2009
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
@ -129,6 +129,78 @@ cifs_bp_rename_retry:
return full_path;
}
static int cifs_posix_open(char *full_path, struct inode **pinode,
struct super_block *sb, int mode, int oflags,
int *poplock, __u16 *pnetfid, int xid)
{
int rc;
__u32 oplock;
FILE_UNIX_BASIC_INFO *presp_data;
__u32 posix_flags = 0;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
cFYI(1, ("posix open %s", full_path));
presp_data = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
if (presp_data == NULL)
return -ENOMEM;
/* So far cifs posix extensions can only map the following flags.
There are other valid fmode oflags such as FMODE_LSEEK, FMODE_PREAD, but
so far we do not seem to need them, and we can treat them as local only */
if ((oflags & (FMODE_READ | FMODE_WRITE)) ==
(FMODE_READ | FMODE_WRITE))
posix_flags = SMB_O_RDWR;
else if (oflags & FMODE_READ)
posix_flags = SMB_O_RDONLY;
else if (oflags & FMODE_WRITE)
posix_flags = SMB_O_WRONLY;
if (oflags & O_CREAT)
posix_flags |= SMB_O_CREAT;
if (oflags & O_EXCL)
posix_flags |= SMB_O_EXCL;
if (oflags & O_TRUNC)
posix_flags |= SMB_O_TRUNC;
if (oflags & O_APPEND)
posix_flags |= SMB_O_APPEND;
if (oflags & O_SYNC)
posix_flags |= SMB_O_SYNC;
if (oflags & O_DIRECTORY)
posix_flags |= SMB_O_DIRECTORY;
if (oflags & O_NOFOLLOW)
posix_flags |= SMB_O_NOFOLLOW;
if (oflags & O_DIRECT)
posix_flags |= SMB_O_DIRECT;
rc = CIFSPOSIXCreate(xid, cifs_sb->tcon, posix_flags, mode,
pnetfid, presp_data, &oplock, full_path,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc)
goto posix_open_ret;
if (presp_data->Type == cpu_to_le32(-1))
goto posix_open_ret; /* open ok, caller does qpathinfo */
/* get new inode and set it up */
if (!pinode)
goto posix_open_ret; /* caller does not need info */
*pinode = cifs_new_inode(sb, &presp_data->UniqueId);
/* We do not need to close the file if new_inode fails since
the caller will retry qpathinfo as long as inode is null */
if (*pinode == NULL)
goto posix_open_ret;
posix_fill_in_inode(*pinode, presp_data, 1);
posix_open_ret:
kfree(presp_data);
return rc;
}
static void setup_cifs_dentry(struct cifsTconInfo *tcon,
struct dentry *direntry,
struct inode *newinode)
@ -150,7 +222,14 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
int xid;
int create_options = CREATE_NOT_DIR;
int oplock = 0;
/* BB below access is too much for the mknod to request */
int oflags;
/*
* BB below access is probably too much for mknod to request
* but we have to do query and setpathinfo so requesting
* less could fail (unless we want to request getatr and setatr
* permissions (only). At least for POSIX we do not have to
* request so much.
*/
int desiredAccess = GENERIC_READ | GENERIC_WRITE;
__u16 fileHandle;
struct cifs_sb_info *cifs_sb;
@ -174,13 +253,43 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
}
mode &= ~current->fs->umask;
if (oplockEnabled)
oplock = REQ_OPLOCK;
if (nd && (nd->flags & LOOKUP_OPEN))
oflags = nd->intent.open.flags;
else
oflags = FMODE_READ;
if (tcon->unix_ext && (tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
rc = cifs_posix_open(full_path, &newinode, inode->i_sb,
mode, oflags, &oplock, &fileHandle, xid);
/* EIO could indicate that (posix open) operation is not
supported, despite what server claimed in capability
negotation. EREMOTE indicates DFS junction, which is not
handled in posix open */
if ((rc == 0) && (newinode == NULL))
goto cifs_create_get_file_info; /* query inode info */
else if (rc == 0) /* success, no need to query */
goto cifs_create_set_dentry;
else if ((rc != -EIO) && (rc != -EREMOTE) &&
(rc != -EOPNOTSUPP)) /* path not found or net err */
goto cifs_create_out;
/* else fallthrough to retry, using older open call, this is
case where server does not support this SMB level, and
falsely claims capability (also get here for DFS case
which should be rare for path not covered on files) */
}
if (nd && (nd->flags & LOOKUP_OPEN)) {
int oflags = nd->intent.open.flags;
/* if the file is going to stay open, then we
need to set the desired access properly */
desiredAccess = 0;
if (oflags & FMODE_READ)
desiredAccess |= GENERIC_READ;
desiredAccess |= GENERIC_READ; /* is this too little? */
if (oflags & FMODE_WRITE) {
desiredAccess |= GENERIC_WRITE;
if (!(oflags & FMODE_READ))
@ -199,8 +308,6 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
/* BB add processing to set equivalent of mode - e.g. via CreateX with
ACLs */
if (oplockEnabled)
oplock = REQ_OPLOCK;
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (buf == NULL) {
@ -233,116 +340,112 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
}
if (rc) {
cFYI(1, ("cifs_create returned 0x%x", rc));
} else {
/* If Open reported that we actually created a file
then we now have to set the mode if possible */
if ((tcon->unix_ext) && (oplock & CIFS_CREATE_ACTION)) {
struct cifs_unix_set_info_args args = {
goto cifs_create_out;
}
/* If Open reported that we actually created a file
then we now have to set the mode if possible */
if ((tcon->unix_ext) && (oplock & CIFS_CREATE_ACTION)) {
struct cifs_unix_set_info_args args = {
.mode = mode,
.ctime = NO_CHANGE_64,
.atime = NO_CHANGE_64,
.mtime = NO_CHANGE_64,
.device = 0,
};
};
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
args.uid = (__u64) current_fsuid();
if (inode->i_mode & S_ISGID)
args.gid = (__u64) inode->i_gid;
else
args.gid = (__u64) current_fsgid();
} else {
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
}
CIFSSMBUnixSetInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
args.uid = (__u64) current_fsuid();
if (inode->i_mode & S_ISGID)
args.gid = (__u64) inode->i_gid;
else
args.gid = (__u64) current_fsgid();
} else {
/* BB implement mode setting via Windows security
descriptors e.g. */
/* CIFSSMBWinSetPerms(xid,tcon,path,mode,-1,-1,nls);*/
/* Could set r/o dos attribute if mode & 0222 == 0 */
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
}
CIFSSMBUnixSetInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
} else {
/* BB implement mode setting via Windows security
descriptors e.g. */
/* CIFSSMBWinSetPerms(xid,tcon,path,mode,-1,-1,nls);*/
/* server might mask mode so we have to query for it */
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
else {
rc = cifs_get_inode_info(&newinode, full_path,
buf, inode->i_sb, xid,
&fileHandle);
if (newinode) {
if (cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_DYNPERM)
newinode->i_mode = mode;
if ((oplock & CIFS_CREATE_ACTION) &&
(cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_SET_UID)) {
newinode->i_uid = current_fsuid();
if (inode->i_mode & S_ISGID)
newinode->i_gid =
inode->i_gid;
else
newinode->i_gid =
current_fsgid();
}
/* Could set r/o dos attribute if mode & 0222 == 0 */
}
cifs_create_get_file_info:
/* server might mask mode so we have to query for it */
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
else {
rc = cifs_get_inode_info(&newinode, full_path, buf,
inode->i_sb, xid, &fileHandle);
if (newinode) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
newinode->i_mode = mode;
if ((oplock & CIFS_CREATE_ACTION) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) {
newinode->i_uid = current_fsuid();
if (inode->i_mode & S_ISGID)
newinode->i_gid = inode->i_gid;
else
newinode->i_gid = current_fsgid();
}
}
}
if (rc != 0) {
cFYI(1, ("Create worked, get_inode_info failed rc = %d",
rc));
} else
setup_cifs_dentry(tcon, direntry, newinode);
cifs_create_set_dentry:
if (rc == 0)
setup_cifs_dentry(tcon, direntry, newinode);
else
cFYI(1, ("Create worked, get_inode_info failed rc = %d", rc));
if ((nd == NULL /* nfsd case - nfs srv does not set nd */) ||
(!(nd->flags & LOOKUP_OPEN))) {
/* mknod case - do not leave file open */
CIFSSMBClose(xid, tcon, fileHandle);
} else if (newinode) {
struct cifsFileInfo *pCifsFile =
kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
/* nfsd case - nfs srv does not set nd */
if ((nd == NULL) || (!(nd->flags & LOOKUP_OPEN))) {
/* mknod case - do not leave file open */
CIFSSMBClose(xid, tcon, fileHandle);
} else if (newinode) {
struct cifsFileInfo *pCifsFile =
kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
if (pCifsFile == NULL)
goto cifs_create_out;
pCifsFile->netfid = fileHandle;
pCifsFile->pid = current->tgid;
pCifsFile->pInode = newinode;
pCifsFile->invalidHandle = false;
pCifsFile->closePend = false;
init_MUTEX(&pCifsFile->fh_sem);
mutex_init(&pCifsFile->lock_mutex);
INIT_LIST_HEAD(&pCifsFile->llist);
atomic_set(&pCifsFile->wrtPending, 0);
if (pCifsFile == NULL)
goto cifs_create_out;
pCifsFile->netfid = fileHandle;
pCifsFile->pid = current->tgid;
pCifsFile->pInode = newinode;
pCifsFile->invalidHandle = false;
pCifsFile->closePend = false;
init_MUTEX(&pCifsFile->fh_sem);
mutex_init(&pCifsFile->lock_mutex);
INIT_LIST_HEAD(&pCifsFile->llist);
atomic_set(&pCifsFile->wrtPending, 0);
/* set the following in open now
/* set the following in open now
pCifsFile->pfile = file; */
write_lock(&GlobalSMBSeslock);
list_add(&pCifsFile->tlist, &tcon->openFileList);
pCifsInode = CIFS_I(newinode);
if (pCifsInode) {
/* if readable file instance put first in list*/
if (write_only) {
list_add_tail(&pCifsFile->flist,
&pCifsInode->openFileList);
} else {
list_add(&pCifsFile->flist,
&pCifsInode->openFileList);
}
if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
pCifsInode->clientCanCacheAll = true;
pCifsInode->clientCanCacheRead = true;
cFYI(1, ("Exclusive Oplock inode %p",
newinode));
} else if ((oplock & 0xF) == OPLOCK_READ)
pCifsInode->clientCanCacheRead = true;
write_lock(&GlobalSMBSeslock);
list_add(&pCifsFile->tlist, &tcon->openFileList);
pCifsInode = CIFS_I(newinode);
if (pCifsInode) {
/* if readable file instance put first in list*/
if (write_only) {
list_add_tail(&pCifsFile->flist,
&pCifsInode->openFileList);
} else {
list_add(&pCifsFile->flist,
&pCifsInode->openFileList);
}
write_unlock(&GlobalSMBSeslock);
if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
pCifsInode->clientCanCacheAll = true;
pCifsInode->clientCanCacheRead = true;
cFYI(1, ("Exclusive Oplock inode %p",
newinode));
} else if ((oplock & 0xF) == OPLOCK_READ)
pCifsInode->clientCanCacheRead = true;
}
write_unlock(&GlobalSMBSeslock);
}
cifs_create_out:
kfree(buf);

104
fs/cifs/inode.c
View file

@ -199,6 +199,49 @@ static void fill_fake_finddataunix(FILE_UNIX_BASIC_INFO *pfnd_dat,
pfnd_dat->Gid = cpu_to_le64(pinode->i_gid);
}
/**
* cifs_new inode - create new inode, initialize, and hash it
* @sb - pointer to superblock
* @inum - if valid pointer and serverino is enabled, replace i_ino with val
*
* Create a new inode, initialize it for CIFS and hash it. Returns the new
* inode or NULL if one couldn't be allocated.
*
* If the share isn't mounted with "serverino" or inum is a NULL pointer then
* we'll just use the inode number assigned by new_inode(). Note that this can
* mean i_ino collisions since the i_ino assigned by new_inode is not
* guaranteed to be unique.
*/
struct inode *
cifs_new_inode(struct super_block *sb, __u64 *inum)
{
struct inode *inode;
inode = new_inode(sb);
if (inode == NULL)
return NULL;
/*
* BB: Is i_ino == 0 legal? Here, we assume that it is. If it isn't we
* stop passing inum as ptr. Are there sanity checks we can use to
* ensure that the server is really filling in that field? Also,
* if serverino is disabled, perhaps we should be using iunique()?
*/
if (inum && (CIFS_SB(sb)->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM))
inode->i_ino = (unsigned long) *inum;
/*
* must set this here instead of cifs_alloc_inode since VFS will
* clobber i_flags
*/
if (sb->s_flags & MS_NOATIME)
inode->i_flags |= S_NOATIME | S_NOCMTIME;
insert_inode_hash(inode);
return inode;
}
int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *full_path, struct super_block *sb, int xid)
{
@ -233,22 +276,11 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* get new inode */
if (*pinode == NULL) {
*pinode = new_inode(sb);
*pinode = cifs_new_inode(sb, &find_data.UniqueId);
if (*pinode == NULL) {
rc = -ENOMEM;
goto cgiiu_exit;
}
/* Is an i_ino of zero legal? */
/* note ino incremented to unique num in new_inode */
/* Are there sanity checks we can use to ensure that
the server is really filling in that field? */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
(*pinode)->i_ino = (unsigned long)find_data.UniqueId;
if (sb->s_flags & MS_NOATIME)
(*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
insert_inode_hash(*pinode);
}
inode = *pinode;
@ -465,11 +497,9 @@ int cifs_get_inode_info(struct inode **pinode,
/* get new inode */
if (*pinode == NULL) {
*pinode = new_inode(sb);
if (*pinode == NULL) {
rc = -ENOMEM;
goto cgii_exit;
}
__u64 inode_num;
__u64 *pinum = &inode_num;
/* Is an i_ino of zero legal? Can we use that to check
if the server supports returning inode numbers? Are
there other sanity checks we can use to ensure that
@ -486,22 +516,26 @@ int cifs_get_inode_info(struct inode **pinode,
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
int rc1 = 0;
__u64 inode_num;
rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
full_path, &inode_num,
full_path, pinum,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc1) {
cFYI(1, ("GetSrvInodeNum rc %d", rc1));
pinum = NULL;
/* BB EOPNOSUPP disable SERVER_INUM? */
} else /* do we need cast or hash to ino? */
(*pinode)->i_ino = inode_num;
} /* else ino incremented to unique num in new_inode*/
if (sb->s_flags & MS_NOATIME)
(*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
insert_inode_hash(*pinode);
}
} else {
pinum = NULL;
}
*pinode = cifs_new_inode(sb, pinum);
if (*pinode == NULL) {
rc = -ENOMEM;
goto cgii_exit;
}
}
inode = *pinode;
cifsInfo = CIFS_I(inode);
@ -621,7 +655,7 @@ static const struct inode_operations cifs_ipc_inode_ops = {
.lookup = cifs_lookup,
};
static char *build_path_to_root(struct cifs_sb_info *cifs_sb)
char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
{
int pplen = cifs_sb->prepathlen;
int dfsplen;
@ -678,7 +712,7 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
return inode;
cifs_sb = CIFS_SB(inode->i_sb);
full_path = build_path_to_root(cifs_sb);
full_path = cifs_build_path_to_root(cifs_sb);
if (full_path == NULL)
return ERR_PTR(-ENOMEM);
@ -1017,7 +1051,7 @@ out_reval:
return rc;
}
static void posix_fill_in_inode(struct inode *tmp_inode,
void posix_fill_in_inode(struct inode *tmp_inode,
FILE_UNIX_BASIC_INFO *pData, int isNewInode)
{
struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
@ -1114,24 +1148,14 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
else
direntry->d_op = &cifs_dentry_ops;
newinode = new_inode(inode->i_sb);
newinode = cifs_new_inode(inode->i_sb,
&pInfo->UniqueId);
if (newinode == NULL) {
kfree(pInfo);
goto mkdir_get_info;
}
/* Is an i_ino of zero legal? */
/* Are there sanity checks we can use to ensure that
the server is really filling in that field? */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
newinode->i_ino =
(unsigned long)pInfo->UniqueId;
} /* note ino incremented to unique num in new_inode */
if (inode->i_sb->s_flags & MS_NOATIME)
newinode->i_flags |= S_NOATIME | S_NOCMTIME;
newinode->i_nlink = 2;
insert_inode_hash(newinode);
d_instantiate(direntry, newinode);
/* we already checked in POSIXCreate whether

58
fs/cifs/readdir.c
View file

@ -56,35 +56,34 @@ static inline void dump_cifs_file_struct(struct file *file, char *label)
}
#endif /* DEBUG2 */
/* Returns one if new inode created (which therefore needs to be hashed) */
/* Returns 1 if new inode created, 2 if both dentry and inode were */
/* Might check in the future if inode number changed so we can rehash inode */
static int construct_dentry(struct qstr *qstring, struct file *file,
struct inode **ptmp_inode, struct dentry **pnew_dentry)
static int
construct_dentry(struct qstr *qstring, struct file *file,
struct inode **ptmp_inode, struct dentry **pnew_dentry,
__u64 *inum)
{
struct dentry *tmp_dentry;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
struct dentry *tmp_dentry = NULL;
struct super_block *sb = file->f_path.dentry->d_sb;
int rc = 0;
cFYI(1, ("For %s", qstring->name));
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
pTcon = cifs_sb->tcon;
qstring->hash = full_name_hash(qstring->name, qstring->len);
tmp_dentry = d_lookup(file->f_path.dentry, qstring);
if (tmp_dentry) {
/* BB: overwrite old name? i.e. tmp_dentry->d_name and
* tmp_dentry->d_name.len??
*/
cFYI(0, ("existing dentry with inode 0x%p",
tmp_dentry->d_inode));
*ptmp_inode = tmp_dentry->d_inode;
/* BB overwrite old name? i.e. tmp_dentry->d_name and tmp_dentry->d_name.len??*/
if (*ptmp_inode == NULL) {
*ptmp_inode = new_inode(file->f_path.dentry->d_sb);
*ptmp_inode = cifs_new_inode(sb, inum);
if (*ptmp_inode == NULL)
return rc;
rc = 1;
}
if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
(*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
} else {
tmp_dentry = d_alloc(file->f_path.dentry, qstring);
if (tmp_dentry == NULL) {
@ -93,15 +92,14 @@ static int construct_dentry(struct qstr *qstring, struct file *file,
return rc;
}
*ptmp_inode = new_inode(file->f_path.dentry->d_sb);
if (pTcon->nocase)
if (CIFS_SB(sb)->tcon->nocase)
tmp_dentry->d_op = &cifs_ci_dentry_ops;
else
tmp_dentry->d_op = &cifs_dentry_ops;
*ptmp_inode = cifs_new_inode(sb, inum);
if (*ptmp_inode == NULL)
return rc;
if (file->f_path.dentry->d_sb->s_flags & MS_NOATIME)
(*ptmp_inode)->i_flags |= S_NOATIME | S_NOCMTIME;
rc = 2;
}
@ -822,7 +820,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
/* inode num, inode type and filename returned */
static int cifs_get_name_from_search_buf(struct qstr *pqst,
char *current_entry, __u16 level, unsigned int unicode,
struct cifs_sb_info *cifs_sb, int max_len, ino_t *pinum)
struct cifs_sb_info *cifs_sb, int max_len, __u64 *pinum)
{
int rc = 0;
unsigned int len = 0;
@ -842,9 +840,7 @@ static int cifs_get_name_from_search_buf(struct qstr *pqst,
len = strnlen(filename, PATH_MAX);
}
/* BB fixme - hash low and high 32 bits if not 64 bit arch BB */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
*pinum = pFindData->UniqueId;
*pinum = pFindData->UniqueId;
} else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
FILE_DIRECTORY_INFO *pFindData =
(FILE_DIRECTORY_INFO *)current_entry;
@ -907,7 +903,7 @@ static int cifs_filldir(char *pfindEntry, struct file *file,
struct qstr qstring;
struct cifsFileInfo *pCifsF;
unsigned int obj_type;
ino_t inum;
__u64 inum;
struct cifs_sb_info *cifs_sb;
struct inode *tmp_inode;
struct dentry *tmp_dentry;
@ -940,20 +936,18 @@ static int cifs_filldir(char *pfindEntry, struct file *file,
if (rc)
return rc;
rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry);
/* only these two infolevels return valid inode numbers */
if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX ||
pCifsF->srch_inf.info_level == SMB_FIND_FILE_ID_FULL_DIR_INFO)
rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry,
&inum);
else
rc = construct_dentry(&qstring, file, &tmp_inode, &tmp_dentry,
NULL);
if ((tmp_inode == NULL) || (tmp_dentry == NULL))
return -ENOMEM;
if (rc) {
/* inode created, we need to hash it with right inode number */
if (inum != 0) {
/* BB fixme - hash the 2 32 quantities bits together if
* necessary BB */
tmp_inode->i_ino = inum;
}
insert_inode_hash(tmp_inode);
}
/* we pass in rc below, indicating whether it is a new inode,
so we can figure out whether to invalidate the inode cached
data if the file has changed */

91
fs/cifs/sess.c
View file

@ -34,15 +34,99 @@
extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
unsigned char *p24);
/* Checks if this is the first smb session to be reconnected after
the socket has been reestablished (so we know whether to use vc 0).
Called while holding the cifs_tcp_ses_lock, so do not block */
static bool is_first_ses_reconnect(struct cifsSesInfo *ses)
{
struct list_head *tmp;
struct cifsSesInfo *tmp_ses;
list_for_each(tmp, &ses->server->smb_ses_list) {
tmp_ses = list_entry(tmp, struct cifsSesInfo,
smb_ses_list);
if (tmp_ses->need_reconnect == false)
return false;
}
/* could not find a session that was already connected,
this must be the first one we are reconnecting */
return true;
}
/*
* vc number 0 is treated specially by some servers, and should be the
* first one we request. After that we can use vcnumbers up to maxvcs,
* one for each smb session (some Windows versions set maxvcs incorrectly
* so maxvc=1 can be ignored). If we have too many vcs, we can reuse
* any vc but zero (some servers reset the connection on vcnum zero)
*
*/
static __le16 get_next_vcnum(struct cifsSesInfo *ses)
{
__u16 vcnum = 0;
struct list_head *tmp;
struct cifsSesInfo *tmp_ses;
__u16 max_vcs = ses->server->max_vcs;
__u16 i;
int free_vc_found = 0;
/* Quoting the MS-SMB specification: "Windows-based SMB servers set this
field to one but do not enforce this limit, which allows an SMB client
to establish more virtual circuits than allowed by this value ... but
other server implementations can enforce this limit." */
if (max_vcs < 2)
max_vcs = 0xFFFF;
write_lock(&cifs_tcp_ses_lock);
if ((ses->need_reconnect) && is_first_ses_reconnect(ses))
goto get_vc_num_exit; /* vcnum will be zero */
for (i = ses->server->srv_count - 1; i < max_vcs; i++) {
if (i == 0) /* this is the only connection, use vc 0 */
break;
free_vc_found = 1;
list_for_each(tmp, &ses->server->smb_ses_list) {
tmp_ses = list_entry(tmp, struct cifsSesInfo,
smb_ses_list);
if (tmp_ses->vcnum == i) {
free_vc_found = 0;
break; /* found duplicate, try next vcnum */
}
}
if (free_vc_found)
break; /* we found a vcnumber that will work - use it */
}
if (i == 0)
vcnum = 0; /* for most common case, ie if one smb session, use
vc zero. Also for case when no free vcnum, zero
is safest to send (some clients only send zero) */
else if (free_vc_found == 0)
vcnum = 1; /* we can not reuse vc=0 safely, since some servers
reset all uids on that, but 1 is ok. */
else
vcnum = i;
ses->vcnum = vcnum;
get_vc_num_exit:
write_unlock(&cifs_tcp_ses_lock);
return le16_to_cpu(vcnum);
}
static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
{
__u32 capabilities = 0;
/* init fields common to all four types of SessSetup */
/* note that header is initialized to zero in header_assemble */
/* Note that offsets for first seven fields in req struct are same */
/* in CIFS Specs so does not matter which of 3 forms of struct */
/* that we use in next few lines */
/* Note that header is initialized to zero in header_assemble */
pSMB->req.AndXCommand = 0xFF;
pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
pSMB->req.VcNumber = get_next_vcnum(ses);
/* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */
@ -71,7 +155,6 @@ static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
if (ses->capabilities & CAP_UNIX)
capabilities |= CAP_UNIX;
/* BB check whether to init vcnum BB */
return capabilities;
}
@ -228,7 +311,7 @@ static int decode_unicode_ssetup(char **pbcc_area, int bleft,
kfree(ses->serverOS);
/* UTF-8 string will not grow more than four times as big as UCS-16 */
ses->serverOS = kzalloc(4 * len, GFP_KERNEL);
ses->serverOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL);
if (ses->serverOS != NULL)
cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp);
data += 2 * (len + 1);
@ -241,7 +324,7 @@ static int decode_unicode_ssetup(char **pbcc_area, int bleft,
return rc;
kfree(ses->serverNOS);
ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
ses->serverNOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL);
if (ses->serverNOS != NULL) {
cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len,
nls_cp);

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