Sharp's newer range of Zaurus clamshell handhelds, the cxx00's are similar to
the c7x0 series yet different. This patch series abstracts the differences
and generates a set of common drivers that support both series of devices. It
then adds machine support for Spitz (SL-C3000) and Borzoi (SL-C3100). Hooks
for Akita (SL-C1000) differences are also added. The I2C driver for its IO
expander is the only missing piece.
This patch:
Separate out the Sharp Zaurus c7x0 series specific code from corgi_ssp.c so
that other models such as the cxx00's can share it. Create sharpsl.h which
will be used to abstract machine/model specifics.
This enables the driver to be used by the Zaurus cxx00 series.
Signed-Off-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove some redundant BUG_ON() statements in pktcdvd and move one run-time
check to compile-time.
Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds new PCI and subsystem ID's that finally made the spec. It
also include a name change for one controller. I know there's a lot of
duplicat names but the fw folks wanted this for the different implementations.
Even though the same ASIC is used it may be embedded on some platforms,
standup card in others, and a mezzanine in other servers.
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Explain the mysteries of set_current_state().
Quoth Linus:
The scheduler itself never needs the memory barrier at all.
The barrier is needed only if the user itself ends up testing some other
thing afterwards, ie if you have
set_process_state(TASK_INTERRUPTIBLE);
if (still_need_to_sleep())
schedule();
then the "still_need_to_sleep()" thing may test flags and wakeup events,
and then you _may_ want to (and often do) make sure that the write of
TASK_INTERRUPTIBLE is serialized wrt the reads of any wakeup data (since
the wakeup may have happened on another CPU).
So the comment is somewhat wrong. We don't really _care_ whether the state
propagates out to other CPU's since all of our actions are purely local,
and there is nothing we do that is conditional on any other CPU: we're
going to sleep unconditionally, and the scheduler only cares about _our_
state, not about somebody elses state.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Force a compiler error instead of a link error, because they are easier to
track down. Idea stolen from code by Jan Beulich <jbeulich@novell.com>
If the argument to BUILD_BUG_ON evaluates to non-zero the compiler will do:
t.c:6: error: size of array `type name' is negative
(surprised that gcc doesn't have an extension for this)
Signed-off-by: "Andi Kleen" <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Removed ppc32 architecture specific users of asm/segment.h and
asm-ppc/segment.h itself
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Switch to a space optimized version of local_irq_disable() for ColdFire
platforms. Also add reboot support for the Freescale M5272 platform.
Patch originally submitted by Philippe De Muyter <phdm@macqel.be>.
Add reboot support for the Freescale M523x ColdFire platform. Patch originally
submitted by Jate Sujjavanich.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Implement the scattergather support macros for m68knommu targets.
Patch originally submitted by Leon Woestenberg <leonw@mailcan.com>.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add better support for flushing the cache's on some ColdFire processors.
The 5249 cache code is now enabled (it was stubbed out), it really is
needed. Add support for the 527x and 528x families - we only use the
simple instruction cache on them.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
NET/ROM's virtual interfaces don't have a proper private data
structure yet. Create struct nr_private and put the statistics there.
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
NET/ROM is lacking a connection reset like TCP's RST flag which at times
may result in a connecting having to slowly timing out instead of just being
reset. An earlier attempt to reset the connection by sending a
NR_CONNACK | NR_CHOKE_FLAG transport was inacceptable as it did result in
crashes of BPQ systems. An alternative approach of introducing a new
transport type 7 (NR_RESET) has be implemented several years ago in
Paula Jayne Dowie G8PZT's Xrouter.
Implement NR_RESET for Linux's NET/ROM but like any messing with the state
engine consider this experimental for now and thus control it by a sysctl
(net.netrom.reset) which for the time being defaults to off.
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Comment the names used for the AX.25 state machine.
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a few more PID definitions. AX.25 PIDs are the equivalent to IP
protocol numbers.
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rename ax25_encapsulate to ax25_hard_header which these days more
accurately describes what the function is supposed to do.
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
[USBDEVFS] fix inclusion of <linux/compat.h> to avoud header mess
Without moving the include of compat.h down, userspace programs that use
usbdevice_fs.h end up including half the kernel includes (and eventually
fail to compile).
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Original patch from Bertro Simul
This is probably still not quite correct, but seems to be
the best solution so far.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
As mentioned before, the size of the bug frame can be further reduced while
continuing to use instructions to encode the information.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Otherwise it will generate warnings and be generated many times.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While only cosmetic for x86-64, this adjusts the cmpxchg code appearantly
inherited from i386 to use more generic constraints.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rather than blindly re-enabling interrupts in oops_end(), save their state
in oope_begin() and then restore that state.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The only difference was the inline assembly, so move that into
asm/msr.h and merge with the i386 version.
This adds some missing sysfs support code to x86-64.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Being the foundation for reliable stack unwinding, this fixes CFI unwind
annotations in many low-level x86_64 routines, plus a config option
(available to all architectures, and also present in the previously sent
patch adding such annotations to i386 code) to enable them separatly
rather than only along with adding full debug information.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Currently just defined to their non range parts.
Pointed out by John Linville
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
They should be identical in the kernel now, but this
makes it consistent with other code.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Needed for some newer Opteron systems with E stepping and memory
relocation enabled. The node addresses are different in lower
bits now so the nodemap hash function needs to be enlarged.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
As noted by matz@suse.de
The problem is, that on i386 the syscallN
macro is defined like so:
long __res; \
__asm__ volatile ("int $0x80" \
: "=a" (__res) \
: "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
"d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
If one of the arguments (in the _llseek syscall it's the arg4) is a pointer
which the syscall is expected to write to (to the memory pointed to by this
ptr), then this side-effect is not captured in the asm.
If anyone uses this macro to define it's own version of the syscall
(sometimes necessary when not using glibc) and it's inlined, then GCC
doesn't know that this asm write to "*dest", when called like so for instance:
out = 1;
llseek (fd, bla, blubb, &out, trara)
use (out);
Here nobody tells GCC that "out" actually is written to (just a pointer to it
is passed to the asm). Hence GCC might (and in the above bug did)
copy-propagate "1" into the second use of "out".
The easiest solution would be to add a "memory" clobber to the definition
of this syscall macro. As this is a syscall, it shouldn't inhibit too many
optimizations.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The generic TLB flush functions kept upto 506 pages per
CPU to avoid too frequent IPIs.
This value was done for the L1 cache of older x86 CPUs,
but with modern CPUs it does not make much sense anymore.
TLB flushing is slow enough that using the L2 cache is fine.
This patch increases the flush array on x86-64 to cache
5350 pages. That is roughly 20MB with 4K pages. It speeds
up large munmaps in multithreaded processes on SMP considerably.
The cost is roughly 42k of memory per CPU, which is reasonable.
I only increased it on x86-64 for now, but it would probably
make sense to increase it everywhere. Embedded architectures
with SMP may keep it smaller to save some memory per CPU.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
asm-x86-64/timex.h does not reference CONFIG constants.
Do not need to include config.h.
Signed-off-by: Grant Grundler <iod00d@hp.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Instead of using a global spinlock to protect the state
of the remote TLB flush use a lock and state for each sending CPU.
To tell the receiver where to look for the state use 8 different
call vectors. Each CPU uses a specific vector to trigger flushes on other
CPUs. Depending on the received vector the target CPUs look into
the right per cpu variable for the flush data.
When the system has more than 8 CPUs they are hashed to the 8 available
vectors. The limited global vector space forces us to this right now.
In future when interrupts are split into per CPU domains this could be
fixed, at the cost of needing more IPIs in flat mode.
Also some minor cleanup in the smp flush code and remove some outdated
debug code.
Requires patch to move cpu_possible_map setup earlier.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The FLATMEM people added it, but there doesn't seem a good reason
because end_pfn is identical.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
PCI_DMA_BUS_IS_PHYS has to be zero even when the GART IOMMU is disabled
and the swiotlb is used. Otherwise the block layer does unnecessary
double bouncing.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In particular on systems where the local APIC space and node space
is very different from the Linux CPU number space.
Previously the older NUMA setup code directly parsing the K8
northbridge registers had some issues on 8 socket or dual core
systems. This patch fixes them.
This is mainly done by fixing some confusion between Linux
CPU numbers and local APIC ids. We now pass the local APIC IDs
to later code, which avoids mismatches.
Also add some heuristics to detect cases where the Hypertransport
nodeids and the local APIC IDs don't match, but are shifted
by a constant offset.
This is still all quite hackish, hopefully BIOS writers fill
in correct SRATs instead.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Do that later when the CPU boots. SRAT just stores the APIC<->Node
mapping node. This fixes problems on systems where the order
of SRAT entries does not match the MADT.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This was just needed for the Numasaurus, which fortunately
doesn't support x86-64 CPUs.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
No x86-64 chipset has this bug
Generated code doesn't change because it was always disabled.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Optimize the deadlock avoidance check on the global cpuset
semaphore cpuset_sem. Instead of adding a depth counter to the
task struct of each task, rather just two words are enough, one
to store the depth and the other the current cpuset_sem holder.
Thanks to Nikita Danilov for the idea.
Signed-off-by: Paul Jackson <pj@sgi.com>
[ We may want to change this further, but at least it's now
a totally internal decision to the cpusets code ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove w1 comments from crc16.h and move specific constants into
w1_ds2433.c where they are used.
Replace %d with %zd.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
ppc64_attention_msg and ppc64_dump_msg are not used so remove them.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
