Add support for allocating user access regions (UARs).  Use this to
allocate a region for kernel at driver init instead using hard-coded
MTHCA_KAR_PAGE index.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Move the request/ioremap of regions related to event handling into
mthca_eq.c.  Map the correct regions depending on whether we're in
Tavor or native mem-free mode.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Remove support for unsignaled receive requests.  This is a
non-standard extension to the IB spec that is not used by any known
applications or protocols, and is not supported by newer hardware.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Simplify some of the code for CQ handling slightly.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Locking during the poll cq operation can be reduced by locking the cq
while qp is being removed from the qp array.  This also avoids an
extra atomic operation for reference counting.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Avoid taking the CQ table lock in the fast path path by using
synchronize_irq() after removing a CQ from the table to make sure that
no completion events are still in progress.  This gets a nice speedup
(about 4%) in IP over IB on my hardware.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Clean up CQ code so that we only calculate the address of a CQ entry
once when using it.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix ib_find_cached_gid() to return the correct port number relative to
the port numbering used by the device.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix up locking for IPoIB path table.  Make sure that destruction of address
handles, neighbour info and path structs is locked properly to avoid races and
deadlocks.  (Problem originally diagnosed by Shirley Ma)
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

ipoib_put_ah() may call ipoib_free_ah(), which might take the device's lock.
Therefore we need to make sure we don't call ipoib_put_ah() when holding the
lock already.
Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

IPoIB small fixes: Initialize path->ah to NULL, and fix dereference after free
of neigh in error path of neigh_add_path().
Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Make IPoIB data_debug_level module parameter static to the single file
where it is used.  Also Rename IPoIB module parameter variable from
"debug_level" to "ipoib_debug_level".  This avoids possible name
clashes if IPoIB is built into the kernel.  We use module_param_named
so that the user-visible parameter names remain the same.
Signed-off-by: Tom Duffy <tduffy@sun.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Change uses of list_for_each_entry() where the loop variable is freed
inside the loop to list_for_each_entry_safe().
Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix memory leak when posting a receive buffer (pointed out by Shirley Ma).
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

MTHCA_RESET_VALUE must always be swapped, since the HCA expects to see
it in big-endian order and we write it with writel.  This means on
little-endian systems we have to swap it to big-endian order before
writing, and on big-endian systems we need to swap it to make up for
the additional swap that writel will do.  This fixes resetting the HCA
on big-endian machines.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add missing break statements in switch in mthca_profile.c (pointed out
by Michael Tsirkin).
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix some sparse warnings by making sure we have appropriate "extern"
declarations visible.
Signed-off-by: Tom Duffy <tduffy@sun.com>
Signed-off-by: Hal Rosenstock (<halr@voltaire.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix bug when deregistering a vendor class MAD agent.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Remove unneeded MAD agent registration by using a single agent for
both directed-route and LID-routed MADs.
Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

  CC      arch/mips/kernel/ptrace.o
arch/mips/kernel/ptrace.c: In function 'do_syscall_trace':
arch/mips/kernel/ptrace.c:310: warning: implicit declaration of function 'audit_syscall_entry'
arch/mips/kernel/ptrace.c:310: error: 'struct pt_regs' has no member named 'orig_eax'
arch/mips/kernel/ptrace.c:314: warning: implicit declaration of function 'audit_syscall_exit'
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>

u64's are not longlongs on sparc64 and ppc64.
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch should fix a problem that has been experienced on at-least one
busy NFS server, but it has not had lots of testing yet.  If -mm could provide
that .....

The rpc auth cache currently differentiates between a reference due to
being in a hash chain (signalled by CACHE_HASHED flag) and any other
reference (counted in refcnt).

This is an artificial difference due to an historical accident, and it
makes cache_put unsafe.

This patch removes the distinction so now existance in a hash chain is
counted just like any other reference.  Thus a race window in cache_put is
closed.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

also kmalloc the cache one entry at a time, instead of in one big slab.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The patch below contains the following cleanups:
- make some needlessly global code static
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The pg_authenticate (now pg_authenticate_obsolete) callback was only being
used by the nfs4 client callback code to circumvent the svcauth_unix code's
insistence on checking all requests against the export table.  With that
problem solved, we no longer need it.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

On lockd callbacks, we're a client, and the source address is that of a
server, so we shouldn't be trying to match the source address of the callback
request against our export table.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Use new pg_authenticate method to simplify nfs4 callback authentication.

This also has the effect of changing the error return from rejectedcred to
badcred.  I believe the change is correct.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

svcauth_null_accept() and svcauth_unix_accept() are currently hard-wired to
check the source ip address on an incoming request against the export table,
which make sense for nfsd but not necessarily for other rpc-based services.

So instead we have the accept() method call a program-specific
pg_authenticate() method.  We also move the call to this method into
svc_process instead of calling it from the flavor-specific accept() routines.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Later patches remove pg_authenticate and use the name for a different purpose;
so rename it to pg_authenticate_obsolete for now.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add a set_client method to the server rpc auth_ops struct, used to set the
client (for the purposes of nfsd export authorization) using flavor-specific
information.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

find_exported_dentry() declares
	char nbuf[NAME_MAX+1];
in 2 separate places, and gcc allocates space on the stack for both
of them.  Having just one of them will suffice, if we can put put
with its scope.

Reduces function stack usage on x86-32 from 0x230 to 0x130.
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch makes "find" work when traversing nohide exports on NFSv3.  The
READDIRPLUS reply needs to not return a file handle for the ".." entry when
the directory is a server side mountpoint, which would be the directory
itself, otherwise the client remembers the wrong file handle and gets
confused.
Signed-off-by: Greg Banks <gnb@melbourne.sgi.com>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

Patch from Nicolas Pitre

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King

Patch from Nicolas Pitre

... plus Mainstone bits.

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King

Patch from George G. Davis

Use ARMv6 supersections for 16MiB static kernel direct mapped memory
regions when possible.
Based on comments received for the first version of this patch, this
version has added a comment to clarify that ARMv6 supersections are
only valid for the domain == 0 case and moved the supersection address
mask and size macros before the hardware page table definitions.

Signed-off-by: George G. Davis
Signed-off-by: Russell King

Patch from SAN People

On some ARM-based processor's (eg, Atmel's AT91RM9200) it is necessary
to signal the end-of-interrupt to the interrupt controller. This is
necessary so it can restore its internal priority levels, etc.
This patch is equivalent to the version in the current 2.4 kernels.
Patch now updated to 2.6.11

Signed-off-by: Andrew Victor
Signed-off-by: Russell King

Patch from Richard Purdie

The printks inside pxa_gpio_irq_type damage performance and are of little value in a production kernel. They should be disabled.

Signed-off-by: Richard PurdieSigned-off-by: Nicolas Pitre
Signed-off-by: Russell King

Patch from Thomas Gleixner

IRQ_DISPATCH is defined in two c files. Move it to the common header file.

Signed-off-by: Thomas Gleixner
Signed-off-by: Russell King