Commit graph

44 commits

Author SHA1 Message Date
Alan Cox
655fdeab80 [PATCH] Final rio polish
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-15 11:20:57 -07:00
Yoichi Yuasa
8417eb7a16 [PATCH] RTC subsystem: VR41XX driver
This patch updates VR4100 series RTC driver.

* This driver supports new RTC subsystem.
* Simple set time/read time test worked fine.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-11 06:18:47 -07:00
Paul Mackerras
bac30d1a78 Merge ../linux-2.6 2006-03-29 13:24:50 +11:00
Arnd Bergmann
f4d1749e95 [PATCH] powerpc: add hvc backend for rtas
Current Cell hardware is using the console through a set
of rtas calls. This driver is needed to get console
output on those boards.

Signed-off-by: Arnd Bergmann <abergman@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-28 16:45:28 +11:00
Ryan S. Arnold
45d607ed92 [PATCH] powerpc: hvc_console updates
These are some updates from both Ryan and Arnd for the hvc_console
driver:

The main point is to enable the inclusion of a console driver
for rtas, which is currrently needed for the cell platform.

Also shuffle around some data-type declarations and moves some
functions out of include/asm-ppc64/hvconsole.h and into a new
drivers/char/hvc_console.h file.

Signed-off-by: "Ryan S. Arnold" <rsa@us.ibm.com>
Signed-off-by: Arnd Bergmann <abergman@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-28 16:45:26 +11:00
Alessandro Zummo
12b824fb15 [PATCH] RTC subsystem: ARM cleanup
This patch removes from the ARM subsytem some of the rtc-related functions
that have been included in the RTC subsystem.  It also fixes some naming
collisions.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 08:44:50 -08:00
maximilian attems
5ff2a7e25d [PATCH] isicom: select FW_LOADER
The isicom driver uses request_firmware() and thus needs to select
FW_LOADER.

Signed-off-by: maximilian attems <maks@sternwelten.at>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 08:56:58 -08:00
Alan Cox
db3185242a [PATCH] rio driver rework continued #5
Final polish.  There is no more save_flags/cli type locking left.  We also no
longer use the pcicopy function and file so they can go.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Anton Blanchard
8ac4fc53fe [PATCH] powerpc: dont allow old RTC to be selected
Now powerpc uses the generic RTC stuff we should not enable the old RTC.
Doing so will result in hangs at boot.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-23 14:40:16 +11:00
Al Viro
8ef9cf3181 [PATCH] synclink_gt is PCI-only
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-08 01:04:50 -05:00
Jan Glauber
3633b0475e [PATCH] s390: hangcheck timer support
Remove useless s390 define from hangcheck-timer, remove wrong definition of a
TOD second and other s390 ifdefs.  Use monotonic_clock instead.

Add hangcheck-timer option, copied from drivers/char/Kconfig.  This is ugly
but unless we have a big Kconfig cleanup we cannot include
drivers/char/Kconfig...

Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01 08:53:24 -08:00
Adrian Bunk
b480146fd1 ftape: remove some outdated information from Kconfig files
This patch removes some outdated information about the ftape driver like
pointers to no longer existing webpages from Kconfig files.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-01-15 01:57:47 +01:00
Alan Cox
33f0f88f1c [PATCH] TTY layer buffering revamp
The API and code have been through various bits of initial review by
serial driver people but they definitely need to live somewhere for a
while so the unconverted drivers can get knocked into shape, existing
drivers that have been updated can be better tuned and bugs whacked out.

This replaces the tty flip buffers with kmalloc objects in rings. In the
normal situation for an IRQ driven serial port at typical speeds the
behaviour is pretty much the same, two buffers end up allocated and the
kernel cycles between them as before.

When there are delays or at high speed we now behave far better as the
buffer pool can grow a bit rather than lose characters. This also means
that we can operate at higher speeds reliably.

For drivers that receive characters in blocks (DMA based, USB and
especially virtualisation) the layer allows a lot of driver specific
code that works around the tty layer with private secondary queues to be
removed. The IBM folks need this sort of layer, the smart serial port
people do, the virtualisers do (because a virtualised tty typically
operates at infinite speed rather than emulating 9600 baud).

Finally many drivers had invalid and unsafe attempts to avoid buffer
overflows by directly invoking tty methods extracted out of the innards
of work queue structs. These are no longer needed and all go away. That
fixes various random hangs with serial ports on overflow.

The other change in here is to optimise the receive_room path that is
used by some callers. It turns out that only one ldisc uses receive room
except asa constant and it updates it far far less than the value is
read. We thus make it a variable not a function call.

I expect the code to contain bugs due to the size alone but I'll be
watching and squashing them and feeding out new patches as it goes.

Because the buffers now dynamically expand you should only run out of
buffering when the kernel runs out of memory for real.  That means a lot of
the horrible hacks high performance drivers used to do just aren't needed any
more.

Description:

tty_insert_flip_char is an old API and continues to work as before, as does
tty_flip_buffer_push() [this is why many drivers dont need modification].  It
does now also return the number of chars inserted

There are also

tty_buffer_request_room(tty, len)

which asks for a buffer block of the length requested and returns the space
found.  This improves efficiency with hardware that knows how much to
transfer.

and tty_insert_flip_string_flags(tty, str, flags, len)

to insert a string of characters and flags

For a smart interface the usual code is

    len = tty_request_buffer_room(tty, amount_hardware_says);
    tty_insert_flip_string(tty, buffer_from_card, len);

More description!

At the moment tty buffers are attached directly to the tty.  This is causing a
lot of the problems related to tty layer locking, also problems at high speed
and also with bursty data (such as occurs in virtualised environments)

I'm working on ripping out the flip buffers and replacing them with a pool of
dynamically allocated buffers.  This allows both for old style "byte I/O"
devices and also helps virtualisation and smart devices where large blocks of
data suddenely materialise and need storing.

So far so good.  Lots of drivers reference tty->flip.*.  Several of them also
call directly and unsafely into function pointers it provides.  This will all
break.  Most drivers can use tty_insert_flip_char which can be kept as an API
but others need more.

At the moment I've added the following interfaces, if people think more will
be needed now is a good time to say

 int tty_buffer_request_room(tty, size)

Try and ensure at least size bytes are available, returns actual room (may be
zero).  At the moment it just uses the flipbuf space but that will change.
Repeated calls without characters being added are not cumulative.  (ie if you
call it with 1, 1, 1, and then 4 you'll have four characters of space.  The
other functions will also try and grow buffers in future but this will be a
more efficient way when you know block sizes.

 int tty_insert_flip_char(tty, ch, flag)

As before insert a character if there is room.  Now returns 1 for success, 0
for failure.

 int tty_insert_flip_string(tty, str, len)

Insert a block of non error characters.  Returns the number inserted.

 int tty_prepare_flip_string(tty, strptr, len)

Adjust the buffer to allow len characters to be added.  Returns a buffer
pointer in strptr and the length available.  This allows for hardware that
needs to use functions like insl or mencpy_fromio.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10 08:01:59 -08:00
Alexey Dobriyan
aed615a95f [PATCH] Disable rio on 64-bit platforms
Do it via Kconfig rather than via #error.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10 08:01:26 -08:00
Ben Gardner
e329113ca4 [PATCH] i386: GPIO driver for AMD CS5535/CS5536
A simple driver for the CS5535 and CS5536 that allows a user-space program
to manipulate GPIO pins.  The CS5535/CS5536 chips are Geode processor
companion devices.

Signed-off-by: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10 08:01:24 -08:00
Paul Fulghum
705b6c7b34 [PATCH] new driver synclink_gt
New character device driver for the SyncLink GT and SyncLink AC families of
synchronous and asynchronous serial adapters

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:45 -08:00
David Howells
2919b51075 [PATCH] frv: suppress configuration of certain features for FRV
Suppress configuration of certain features for the FRV arch as they can't be
built for FRV at the moment:

 (*) RTC

 (*) HISAX_*

 (*) PARPORT_PC

 (*) VGA_CONSOLE

 (*) BINFMT_ELF

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:36 -08:00
Martin Schwidefsky
347a8dc3b8 [PATCH] s390: cleanup Kconfig
Sanitize some s390 Kconfig options.  We have ARCH_S390, ARCH_S390X,
ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT.  Replace these 6 options by
S390, 64BIT and COMPAT.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:33:53 -08:00
Adrian Bunk
0b57ee9e55 [SPARC]: introduce a SPARC Kconfig symbol
Introduce a Kconfig symbol SPARC that is defined on both the sparc and
sparc64 architectures.

This symbol makes some dependencies more readable.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-22 23:09:54 -08:00
Adrian Bunk
ce37e5f903 [SPARC]: Fix RTC build failure.
On sparc and sparc64, the rtc driver doesn't compile with PCI support 
disabled.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-19 14:52:24 -08:00
Andrew Morton
0de502aa44 [PATCH] raw driver: Kconfig fix
CONFIG_MAX_RAW_DEVS should appear immediately after CONFIG_RAW_DRIVER.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 08:57:46 -08:00
Benjamin Herrenschmidt
3136254ca5 [PATCH] powerpc: kill ppc64 rtc.c, use genrtc instead
This moves the rtas RTC callbacks to rtas-rtc.c in arch/powerpc/kernel,
and kills the rest of arch/ppc64/kernel/rtc.c which was just a duplicate
of the genrtc functionality. Also enable build of genrtc for
CONFIG_PPC64 (it just works are we already have the required callbacks)
and enable it in all defconfigs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 16:36:08 +11:00
Mark Gross
1a80ba8827 [PATCH] Telecom Clock Driver for MPCBL0010 ATCA computer blade
Signed-off-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:25 -08:00
Brian Gerst
0d078f6f96 [PATCH] CONFIG_IA32
Add CONFIG_X86_32 for i386.  This allows selecting options that only apply
to 32-bit systems.

(X86 && !X86_64) becomes X86_32
(X86 ||  X86_64) becomes X86

Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:10 -08:00
viro@ZenIV.linux.org.uk
f91f4d923f [PATCH] gratuitous includes of asm/serial.h
Removed gratuitous includes of asm/serial.h in synklinkmp and ip2main.
Allows to remove the rest of "broken on sparc32" in drivers/char - this
stuff doesn't break the build anymore.  Since it got zero testing, it almost
certainly won't work there, though...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 10:31:58 -07:00
Alan Cox
f2cf8e25ba [PATCH] Clean up the old digi support and rescue it
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:20 -07:00
Al Viro
c0f2f761e1 [SPARC64]: Kconfig fix (GEN_RTC dependencies)
Yet another architecture not coverd by GEN_RTC - sparc64 never picked
it until now and it doesn't have asm/rtc.h to go with it, so it
wouldn't compile anyway (or have these ioctls in the user-visible
headers, for that matter).

FWIW, I'm very tempted to introduce ARCH_HAS_GEN_RTC and have it set
in arch/*/Kconfig for architectures that know what to do with this
stuff - for something supposedly generic the list of architectures
where it doesn't work is getting too long...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-05 23:35:41 -07:00
Al Viro
1d25240fcf [MOXA]: Fix this driver properly.
Actually, proper fix of that breakage is embarrassingly simple - it's yet
another gratitious leftover include of asm/segment.h, so incremental to the
previos would be removal of that BROKEN and removal of bogus include from
mxser.c itself.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-05 23:30:15 -07:00
Linus Torvalds
e766f1cc59 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 2005-09-05 00:12:58 -07:00
Yoichi Yuasa
466adc66cf [PATCH] fix warning of TANBAC_TB0219 in drivers/char/Kconfig
$ make menuconfig
scripts/kconfig/mconf arch/i386/Kconfig
drivers/char/Kconfig:847:warning: 'select' used by config symbol
'TANBAC_TB0219' refer to undefined symbol 'PCI_VR41XX'

Here is a patch for this warning fix.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:04 -07:00
Yoichi Yuasa
63b799f9de [PATCH] mips: add TANBAC VR4131 multichip module
This patch has added TANBAC VR4131 multichip module in arch/mips/Kconfig

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-05 00:06:04 -07:00
Al Viro
ebede60741 [SPARC32]: More dependencies fallout
More stuff that got exposed to sparc32 build due to inclusion of
drivers/char/Kconfig in arch/sparc/Kconfig needs to be excluded.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-02 12:20:18 -07:00
Al Viro
a238b56350 [PATCH] Kconfig fix (sparc32 drivers/char dependencies)
since sparc32 Kconfig includes drivers/char/Kconfig (instead of duplicating
its parts) we need several new dependencies there to exclude the stuff
broken on sparc32 and not excluded by existing dependencies.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-23 18:43:43 -07:00
Al Viro
253a9c3308 [PATCH] Kconfig fix (m32r genrtc)
genrtc is not for m32r; marked as such.  Probably ought to put that into
arch/* - list of "don't build it on <platform>" is getting too long.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-23 18:43:40 -07:00
Al Viro
e9bcb173dd [PATCH] Kconfig fix (epca on 64bit)
epca is broken on 64bit; marked as such

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-23 18:43:39 -07:00
Andrew Morton
62b662a309 [PATCH] ppc64: genrtc build fix
genrtc.c won't compile on ppc64.  Seems that ppc32 does support it though?

We do this wrong btw - we should be selecting GEN_RTC in each
arch/xxx/Kconfig.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27 16:25:57 -07:00
Adrian Bunk
98e7f29418 [PATCH] schedule the obsolete raw driver for removal
Since kernel 2.6.3 the Kconfig text explicitely stated this driver was
obsolete.

(trolling for IBMers)

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:25:11 -07:00
Yoichi Yuasa
e400bae984 [PATCH] mips: add vr41xx gpio support
Add vr41xx gpio support.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-21 18:46:32 -07:00
Linus Torvalds
897f5ab2cd Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6.git 2005-05-04 19:52:45 -07:00
Al Viro
a553260618 [PATCH] ISA DMA Kconfig fixes - part 3
Drivers that expect ISA DMA API are marked as such in Kconfig.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04 07:33:14 -07:00
Bruce Losure
ae40aae9b9 [IA64-SGI] Altix patch to fix missing Kconfig dependency.
This is a one-liner to make the mbcs driver depend on SGI_TIOCX in the
drivers/char/Kconfig file.

Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03 12:00:01 -07:00
Joel Becker
696f9486d0 [PATCH] hangcheck-timer: Update to 0.9.0.
I recently realized that the in-kernel copy of hangcheck-timer was quite
stale.  Here's the latest.  It adds support for s390, ppc64, and ia64 too.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:08 -07:00
Bruce Losure
e1e19747ec [IA64-SGI] Bus driver for the CX port of SGI's TIO chip.
This patch is to provide CX port infrastructure for SGI TIO-based
h/w.   Also a 'core services' driver for SGI FPGA-based h/w.
                                                                                
Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:09:41 -07:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00