While working on implementing csum_ipv6_magic, I noticed that current
version of ip_fast_csum will potentially return bits above "unsigned
short" as 1.  While no harm is done right now because all call sites
will chop off the upper bits when it uses the return value.  However,
this is still dangerous and buggy.  Here is a patch to enforce that the
function really returns unsigned short in the native register format.

The fix is free as there are plenty open slot to add one more asm instruction.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

The asm version is 4.4 times faster than the generic C version and
10X smaller in code size.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

Additional updates to conform with Rev 2.2 of Volume 2 of "Intel
Itanium Architecture Software Developer's Manual" (January 2006).

Add pal_bus_features_s bits 52 & 53 (page 2:347)
Add pal_vm_info_2_s field max_purges (page 2:2:451)
Add PAL_GET_HW_POLICY call (page 2:381)
Add PAL_SET_HW_POLICY call (page 2:439)

Sample output before:
---------------------------------------------------------------------
cobra:~ # cat /proc/pal/cpu0/vm_info
Physical Address Space         : 50 bits
Virtual Address Space          : 61 bits
Protection Key Registers(PKR)  : 16
Implemented bits in PKR.key    : 24
Hash Tag ID                    : 0x2
Size of RR.rid                 : 24
Supported memory attributes    : WB, UC, UCE, WC, NaTPage
---------------------------------------------------------------------

Sample output after:
---------------------------------------------------------------------
cobra:~ # cat /proc/pal/cpu0/vm_info
Physical Address Space         : 50 bits
Virtual Address Space          : 61 bits
Protection Key Registers(PKR)  : 16
Implemented bits in PKR.key    : 24
Hash Tag ID                    : 0x2
Max Purges                     : 1
Size of RR.rid                 : 24
Supported memory attributes    : WB, UC, UCE, WC, NaTPage
---------------------------------------------------------------------

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>

Add the printing of additional processor features to proc_features.

Based on Rev 2.2 of Volume 2 of "Intel Itanium Architecture Software
Developer's Manual" (January 2006) fields (pages 2:430-2:432).
This patch gets the features back in sync with the spec.

Sample output before:
--------------------------------------------------------------
cobra:~ # cat /proc/pal/cpu0/processor_info
XIP,XPSR,XFS implemented                 : On NoCtrl
XR1-XR3 implemented                      : On NoCtrl
Disable dynamic predicate prediction     : NotImpl
Disable processor physical number        : NotImpl
Disable dynamic data cache prefetch      : NotImpl
Disable dynamic inst cache prefetch      : NotImpl
Disable dynamic branch prediction        : NotImpl
Disable BINIT on processor time-out      : On Ctrl
Disable dynamic power management (DPM)   : NotImpl
Disable coherency                        : NotImpl
Disable cache                            : NotImpl
Enable CMCI promotion                    : Off Ctrl
Enable MCA to BINIT promotion            : Off Ctrl
Enable MCA promotion                     : NotImpl
Enable BERR promotion                    : NotImpl
cobra:~ #
--------------------------------------------------------------

Sample output after:
--------------------------------------------------------------
cobra:~ # cat /proc/pal/cpu0/processor_info
Unimplemented instruction address fault  : NotImpl
INIT, PMI, and LINT pins                 : NotImpl
Simple unimplimented instr addresses     : On NoCtrl
Variable P-state performance             : NotImpl
Virtual machine features implemeted      : On NoCtrl
XIP,XPSR,XFS implemented                 : On NoCtrl
XR1-XR3 implemented                      : On NoCtrl
Disable dynamic predicate prediction     : NotImpl
Disable processor physical number        : NotImpl
Disable dynamic data cache prefetch      : NotImpl
Disable dynamic inst cache prefetch      : NotImpl
Disable dynamic branch prediction        : NotImpl
Disable P-states                         : Off Ctrl
Enable MCA on Data Poisoning             : Off Ctrl
Enable vmsw instruction                  : On Ctrl
Enable extern environmental notification : NotImpl
Disable BINIT on processor time-out      : On Ctrl
Disable dynamic power management (DPM)   : NotImpl
Disable coherency                        : NotImpl
Disable cache                            : NotImpl
Enable CMCI promotion                    : Off Ctrl
Enable MCA to BINIT promotion            : Off Ctrl
Enable MCA promotion                     : NotImpl
Enable BERR promotion                    : NotImpl
cobra:~ #
--------------------------------------------------------------

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>

Rev 2.2 of Volume 2 of "Intel Itanium Architecture Software Developer's
Manual" (January 2006) adds a se bit to the Processor State Parameter
fields (pages 2:299).  This patch gets the structs back in sync
with the spec.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>

Rev 2.2 of Volume 2 of "Intel Itanium Architecture Software Developer's
Manual" (January 2006) adds a dp bit to the cache_check and bus_check
fields (pages 2:401-2:404).  This patch gets the structs back in sync
with the spec.

Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>

On Altix systems, the /proc/irq/nn/smp_affinity mask is not being setup
at device iniitalization, or updated after an interrupt redirection.
This patch resolves those issues.
Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

0/NULL confusion and some missing UL on constants.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Tony Luck <tony.luck@intel.com>

Changes and updates.

1. Remove fake rendz path and related code according to discuss with Khalid Aziz.
2. fc.i offset fix in relocate_kernel.S.
3. iospic shutdown code eoi and mask race fix from Fujitsu.
4. Warm boot hook in machine_kexec to SN SAL code from Jack Steiner.
5. Send slave to SAL slave loop patch from Jay Lan.
6. Kdump on non-recoverable MCA event patch from Jay Lan
7. Use CTL_UNNUMBERED in kdump_on_init sysctl.
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

Here's a small patch which

 - adds a few archs to the current list of supported platforms.
 - adds a few missing slashes at the end of URLs.
 - adds a few references to additional documentation.
 - adds "make config" to the list of possible configuration targets.
 - makes a few other minor changes.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
[ Ben Nizette <ben.nizette@iinet.net.au> points out AVR32 arch too ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Here's a patch that cleans up the "make help" output a bit for the
documentation targets.

Currently the documentation targets are listed completely different than
all the other targets :

  Documentation targets:
    Linux kernel internal documentation in different formats:
    xmldocs (XML DocBook), psdocs (Postscript), pdfdocs (PDF)
    htmldocs (HTML), mandocs (man pages, use installmandocs to install)

with this patch they are more in line with the rest of the output :

  Documentation targets:
   Linux kernel internal documentation in different formats:
    htmldocs        - HTML
    installmandocs  - install man pages generated by mandocs
    mandocs         - man pages
    pdfdocs         - PDF
    psdocs          - Postscript
    xmldocs         - XML DocBook
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Import updates from i386's i8259.c
  [MIPS] *-berr: Header inclusions for DEC bus error handlers
  [MIPS] Compile __do_IRQ() when really needed
  [MIPS] genirq: use name instead of typename
  [MIPS] Do not use handle_level_irq for ioasic_dma_irq_type.
  [MIPS] pte_offset(dir,addr): parenthesis fix

* 'release' of master.kernel.org:/home/ftp/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Fix pci.c kernel compilation breakage.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Any code that relies on the volatile would be a bug waiting to happen
anyway.

Don't encourage people to think that putting 'volatile' on data
structures somehow fixes problems.  We should always use proper locking
(and other serialization) techniques.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This is a resubmission of patches originally created by Ingo Molnar.
The link below is the initial (?) posting of the patch.

  http://marc.theaimsgroup.com/?l=linux-kernel&m=115217423929806&w=2

Remove 'volatile' from spinlock_types as it causes GCC to generate bad
code (see link) and locking should be used on kernel data.
Signed-off-by: Art Haas <ahaas@airmail.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The recent change to convert the is_enabled flag in the PCI device to an
atomic count broke the IA64 compilation.

As pcibios_disable_device is only ever called if the reference count
is zero, convert the if to a BUG_ON.
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>

Import many updates from i386's i8259.c, especially genirq transitions.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 A fixup to add missing header inclusions for bus error handlers for
DECstation system after the recent switch to get_irq_regs().
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

__do_IRQ() is needed only by irq handlers that can't use
default handlers defined in kernel/irq/chip.c.

For others platforms there's no need to compile this function
since it won't be used. For those platforms this patch defines
GENERIC_HARDIRQS_NO__DO_IRQ symbol which is used exactly for
this purpose.

Futhermore for platforms which do not use __do_IRQ(), end()
method which is part of the 'irq_chip' structure is not used.
This patch simply removes this method in this case.
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

The "typename" field was obsoleted by the "name" field.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

This patch adds missing parenthesis around 'dir' argument in pte_offset()
macro definition.

It also removes an extra space in the definition of pte_offset_kernel()
macro.
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

part 1 of fsck-knows-how-many
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (43 commits)
  sh: sh775x/titan fixes for irq header changes.
  sh: update r7780rp defconfig.
  sh: compile fixes for header cleanup.
  sh: Fixup pte_mkhuge() build failure.
  sh: set KBUILD_IMAGE to something sensible.
  sh: show held locks in stack trace with lockdep.
  sh: platform_pata support for R7780RP
  sh: stacktrace/lockdep/irqflags tracing support.
  sh: Fixup movli.l/movco.l atomic ops for gcc4.
  sh: dyntick infrastructure.
  sh: Clock framework tidying.
  sh: Turn off IRQs around get_timer_offset() calls.
  sh: Get the PGD right in oops case with 64-bit PTEs.
  sh: Fix store queue bitmap end.
  sh: More flexible + SH7780 earlyprintk SCIF support.
  sh: Fixup various PAGE_SIZE == 4096 assumptions.
  sh: Fixup 4K irq stacks.
  sh: dma-api channel capability extensions.
  sh: Drop name overload in dma-sh.
  sh: Make dma-isa depend on ISA_DMA_API.
  ...

* git://git.infradead.org/users/dhowells/workq-2.6:
  Actually update the fixed up compile failures.
  WorkQueue: Fix up arch-specific work items where possible
  WorkStruct: make allyesconfig
  WorkStruct: Pass the work_struct pointer instead of context data
  WorkStruct: Merge the pending bit into the wq_data pointer
  WorkStruct: Typedef the work function prototype
  WorkStruct: Separate delayable and non-delayable events.

I was playing with blackfin when i hit a neat bug ... doing an open() on a
directory and then passing that fd to mmap() would cause the kernel to hang

after poking into the code a bit more, i found that
mm/nommu.c:validate_mmap_request() checks the length and if it is 0, just
returns the address ... this is in stark contrast to mmu's
mm/mmap.c:do_mmap_pgoff() where it returns -EINVAL for 0 length requests ...
i then noticed that some other parts of the logic is out of date between the
two funcs, so perhaps that's the easy fix ?
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The first patch is to the 2.6 kernel include file (for m68knommu), to get
rid of the conditional definitions, otherwise the structures have different
sizes depending on whether there's an FPU or not.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Some updates for the old ColdFire serial driver:

 . support 3 and 4 UARTs on some ColdFire parts that have them
 . enable multifunction pins to serial for 527x CPU's
 . support the 5272 UART's fractional baud rate divisor
 . switch driver name to "mcfserial"
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Adds support for RTCs (through genrtc) for M68KNOMMU.

Board-specific code will have to link the appropriate RTC driver to the
mach_hwclk callback, at minimum.

This patch switches the 68360 code over to using rtc_time.
Signed-off-by: Gavin Lambert <gavinl@compacsort.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The 523x timer TRR register is a full 32bits, the older register (on
other ColdFire parts) was only 16 bits.  Use the right type of
__raw_read when accessing it.

Problem found by Yaroslav Vinogradov <yaroslav.vinogradov@freescale.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add a null definition for irq_canonicalize(). It is used in the gerneric
serial subsystem code, can't compile without it.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This adds support for RTCs (through genrtc) for M68KNOMMU.

Board-specific code will have to link the appropriate RTC driver to the
mach_hwclk callback, at minimum.
Signed-off-by: Gavin Lambert <gavinl@compacsort.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-Off-By: David Howells <dhowells@redhat.com>

Conflicts:

	drivers/pcmcia/ds.c

Fix up merge failures with Linus's head and fix new compile failures.
Signed-Off-By: David Howells <dhowells@redhat.com>

The following moves the creation of IPR interupts into setup-7750.c
and updates a few other things to make it all work after the "Drop
CPU subtype IRQ headers" commit. It boots and runs fine on my titan
board.

 - adds an ipr_idx to the ipr_data and uses a function in the subtype
   code to calculate the address of the IPR registers

 - adds a function to enable individual interrupt mode for externals
   in the subtype code and calls that from the titan board code
   instead of doing it directly.

 - I changed the shift in the ipr_data to be the actual # of bits to
   shift, instead of the numnber / 4 - made it easier to match with
   the manual.
Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

Signed-off-by: Paul Mundt <lethal@linux-sh.org>