Commit Graph

325 Commits

Author SHA1 Message Date
Christoph Hellwig
1eeb66a1bb move die notifier handling to common code
This patch moves the die notifier handling to common code.  Previous
various architectures had exactly the same code for it.  Note that the new
code is compiled unconditionally, this should be understood as an appel to
the other architecture maintainer to implement support for it aswell (aka
sprinkling a notify_die or two in the proper place)

arm had a notifiy_die that did something totally different, I renamed it to
arm_notify_die as part of the patch and made it static to the file it's
declared and used at.  avr32 used to pass slightly less information through
this interface and I brought it into line with the other architectures.

[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix vmalloc_sync_all bustage]
[bryan.wu@analog.com: fix vmalloc_sync_all in nommu]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:04 -07:00
Ryusuke Sakato
39374aadcd sh: R7785RP board updates.
Some fixups for the R7785RP board. Gets iVDR working.

Signed-off-by: Ryusuke Sakato <sakato.ryusuke@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:57 +00:00
Paul Mundt
3a2e117e22 sh: Add die chain notifiers.
Add the atomic die chains in, kprobes needs these.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:57 +00:00
Ryusuke Sakato
6865f0ea6a sh: Solution Engine 7722 board support.
This adds more full-featured support for the SH7722 Solution Engine.
Previously this was using the generic board, and lacked most of the
peripheral support.

Signed-off-by: Ryusuke Sakato <sakato.ryusuke@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:57 +00:00
Paul Mundt
6b817c0348 sh: Fix r7780rp build.
With the addition of the R7780MP and R7785RP, the R7780RP build
ended up breaking. Trivial compile fix.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:57 +00:00
Paul Mundt
4d5ade5b29 sh: kdump support.
This adds support for kexec based crash dumps.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:56 +00:00
Paul Mundt
db62e5bd29 sh: Move clock reporting to its own proc entry.
Previously this was done in cpuinfo, but with the number of clocks
growing, it makes more sense to place this in a different proc entry.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:56 +00:00
Nobuhiro Iwamatsu
2a8ff4596c sh: Solution Engine SH7705 board and CPU updates.
This fixes up SH7705 CPU support and the SE7705 board
for some of the recent changes.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.zh@hitachi.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:56 +00:00
dmitry pervushin
1929cb340b sh: SH7722 clock framework support.
This adds support for the SH7722 (MobileR) to the clock framework.

Signed-off-by: dmitry pervushin <dimka@nomadgs.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:56 +00:00
Paul Mundt
dd12666278 sh: Obey CONFIG_HZ for HZ definition.
This wasn't being set before, so now it's set for when it makes sense.
The shwdt case still requires HZ to be fixed at 1000 for the WOVF period,
so this is still preserved.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:56 +00:00
SUGIOKA Toshinobu
760bcb1dee sh: Fix fstatat64() syscall.
Signed-off-by: SUGIOKA Toshinobu <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:55 +00:00
Nobuhiro Iwamatsu
b75762302e sh: SH7780 Solution Engine board support.
This adds support for the SH7780-based Solution Engine reference board.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.zh@hitachi.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:55 +00:00
Paul Mundt
0264f16039 sh: Tidy up L-BOX area5 addresses.
L-BOX can use the normal PA_AREA5_IO, there's no reason for it to
reproduce it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:11:55 +00:00
Paul Mundt
01066625e9 sh: bootmem tidying for discontig/sparsemem preparation.
This reworks some of the node 0 bootmem initialization in
preparation for discontigmem and sparsemem support.

ARCH_POPULATES_NODE_MAP is switched to as a result of this.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:10:54 +00:00
Nobuhiro Iwamatsu
9465a54fa4 sh: MS7712SE01 board support.
Support the SH7712 (SH3-DSP) Solution Engine reference board.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:10:54 +00:00
Nobuhiro Iwamatsu
c86c5a9104 sh: L-BOX RE2 support.
This adds support for the L-BOX RE2 router.

	http://www.nttcom.co.jp/l-box/

L-BOX RE2 is a SH7751R-based router. It has CF, Cardbus, serial,
and LAN x2. This is one of the very few SH boards that a general
person can obtain now.

The L-BOX shipped with a 2.4.28 kernel, this is a rewritten patch
adding it to current git.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:10:54 +00:00
Paul Mundt
32351a28a7 sh: Add SH7785 Highlander board support (R7785RP).
This adds preliminary support for the SH7785-based Highlander board.
Some of the Highlander support code is reordered so that most of it
can be reused directly.

This also plugs in missing SH7785 checks in the places that need it,
as this is the first board to support the CPU.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:10:53 +00:00
Paul Mundt
be782df54c sh: NR_IRQS consolidation.
Each board sets the total number of IRQs that it's interested in via
the machvec. Previously we cared about the off vs on-chip IRQ range,
but any code relying on that is long dead. Set NR_IRQS to something
sensible given the vector range, and allow boards to cap it if they
really care.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:10:53 +00:00
Paul Mundt
fa69151173 sh: generic BUG() support.
Wire up GENERIC_BUG for SH. This moves off of the special bug
frame and on to the generic struct bug_entry. Roughly the same
semantics are retained, and we can kill off some of the verbose
BUG() reporting code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:10:53 +00:00
Paul Mundt
fa5da2f7bd sh: Bring kgdb back from the dead.
This code has suffered quite a bit of bitrot, do some basic
tidying to get it to a reasonably functional state again.
This gets the basic support and the console working again.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07 02:10:51 +00:00
Linus Torvalds
ea62ccd00f Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
  [PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
  [PATCH] i386: type may be unused
  [PATCH] i386: Some additional chipset register values validation.
  [PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
  [PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
  [PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
  [PATCH] i386: white space fixes in i387.h
  [PATCH] i386: Drop noisy e820 debugging printks
  [PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
  [PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
  [PATCH] x86-64: Share identical video.S between i386 and x86-64
  [PATCH] x86-64: Remove CONFIG_REORDER
  [PATCH] x86-64: Print type and size correctly for unknown compat ioctls
  [PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
  [PATCH] i386: Little cleanups in smpboot.c
  [PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
  [PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
  [PATCH] i386: Add X86_FEATURE_RDTSCP
  [PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
  [PATCH] i386: Implement alternative_io for i386
  ...

Fix up trivial conflict in include/linux/highmem.h manually.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-05 14:55:20 -07:00
Jean Delvare
a9dfd281a7 PCI: scatterlist.h needs types.h
Most architectures' scatterlist.h use the type dma_addr_t, but omit to
include <asm/types.h> which defines it.  This could lead to build failures,
so let's add the missing includes.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:34 -07:00
Jeremy Fitzhardinge
d6dd61c831 [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction
Add hooks to allow a paravirt implementation to track the lifetime of
an mm.  Paravirtualization requires three hooks, but only two are
needed in common code.  They are:

arch_dup_mmap, which is called when a new mmap is created at fork

arch_exit_mmap, which is called when the last process reference to an
  mm is dropped, which typically happens on exit and exec.

The third hook is activate_mm, which is called from the arch-specific
activate_mm() macro/function, and so doesn't need stub versions for
other architectures.  It's called when an mm is first used.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: linux-arch@vger.kernel.org
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
2007-05-02 19:27:14 +02:00
Linus Torvalds
0278ef8b48 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (67 commits)
  [SCSI] SUNESP: Complete driver rewrite to version 2.0
  [SPARC64]: Convert PCI over to generic struct iommu/strbuf.
  [SPARC]: device_node name constification fallout
  [SPARC64]: Convert SBUS over to generic iommu/strbuf structs.
  [SPARC64]: Add generic iommu and strbuf structs to iommu.h
  [SPARC64]: Consolidate {sbus,pci}_iommu_arena.
  [SPARC]: Make device_node name and type const
  [SPARC64]: constify some paramaters of OF routines
  [TIGON3]: of_get_property() returns const.
  [SPARC64]: Fix PCI rework to adhere to of_get_property() const return.
  [SPARC64]: Document and fix calculation of pages_avail.
  [SPARC64]: Make sure pbm->prom_node is setup easly enough in psycho.c
  [SPARC64]: Use bootmem_bootmap_pages() in choose_bootmap_pfn().
  [SPARC64]: Add proper header file extern for cmdline_memory_size.
  [SPARC64]: Kill sparc_ultra_dump_{i,d}tlb()
  [SPARC64]: Use DECLARE_BITMAP and BITS_TO_LONGS in mm/init.c
  [SPARC64]: Give move verbose show_mem() output just like i386.
  [SPARC64]: Mark show_mem() printk's with KERN_INFO.
  [SPARC64]: Kill kvaddr_to_phys() and friends.
  [SPARC64]: Privatize sun4u_get_pte() and fix name.
  ...
2007-04-27 09:29:04 -07:00
David S. Miller
ded220bd8f [STRING]: Move strcasecmp/strncasecmp to lib/string.c
We have several platforms using local copies of identical
code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:39 -07:00
Eric Dumazet
92f37fd2ee [NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support
Now that network timestamps use ktime_t infrastructure, we can add a new
SOL_SOCKET sockopt  SO_TIMESTAMPNS.

This command is similar to SO_TIMESTAMP, but permits transmission of
a 'timespec struct' instead of a 'timeval struct' control message.
(nanosecond resolution instead of microsecond)

Control message is labelled SCM_TIMESTAMPNS instead of SCM_TIMESTAMP

A socket cannot mix SO_TIMESTAMP and SO_TIMESTAMPNS : the two modes are
mutually exclusive.

sock_recv_timestamp() became too big to be fully inlined so I added a
__sock_recv_timestamp() helper function.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: linux-arch@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:21 -07:00
Eric Dumazet
ae40eb1ef3 [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution
Now network timestamps use ktime_t infrastructure, we can add a new
ioctl() SIOCGSTAMPNS command to get timestamps in 'struct timespec'.
User programs can thus access to nanosecond resolution.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:04 -07:00
Kristoffer Ericson
b863f46e6a sh: Trivial fix for hp6xx build.
The IRQ3 define was removed when asm-sh/irq.h was cleaned up,
this updates the hp6xx header to use the IRQ number directly.

Signed-off-by: Kristoffer Ericson <kristoffer_e1@hotmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-28 19:45:59 +09:00
Paul Mundt
310f7963c2 sh: Fixup __cmpxchg() compile breakage with gcc4.
As reported by Manuel:

When I build linux with GCC-4.x and enable
CONFIG_CC_OPTIMIZE_FOR_SIZE linking fails with this error:

  LD      .tmp_vmlinux1
  kernel/built-in.o: In function '__cmpxchg_called_with_bad_pointer'
  make[1]: *** [.tmp_vmlinux1] Error 1
  make: *** [_all] Error 2

This ended up being an inlining problem, fixed by explicitly
including linux/compiler.h and grabbing the definitions from there.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-28 17:26:19 +09:00
Paul Mundt
3afb209a43 sh: Fix bogus regs pointer in do_IRQ().
SH-3 and SH-4 were trampling the register, and SH-2 wasn't even
setting it in the first place. This ended up with some rather
broken behaviour in the sysrq show_regs().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-14 13:03:35 +09:00
Mike Frysinger
fbd168461e sh: Convert struct ioctls to static defines.
This fixes up some compile failures for cases where we don't include
all of the headers. There's not much point in keeping the struct
references around anyways, most of the others have been converted
already.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-12 16:12:45 +09:00
Paul Mundt
72a121ba6d sh: Define missing __NR_readahead.
For some reason sh was missing __NR_readahead, even though the
syscall was wired up, and the slot was reserved. Caught with
dwmw2's missing syscall checker.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-12 15:55:19 +09:00
Paul Mundt
39e688a94b sh: Revert lazy dcache writeback changes.
These ended up causing too many problems on older parts,
revert for now..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05 19:46:47 +09:00
Paul Mundt
87e29cacb7 sh: Use L1_CACHE_BYTES for .data.cacheline_aligned.
Previously this was using a hardcoded 32, use L1_CACHE_BYTES for
cacheline alignment instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05 14:13:26 +09:00
Stuart Menefy
9432f96803 sh: Clear UBC when not in use.
This takes care of tearing down the UBC so it's not inadvertently
left configured at the next context switch time. Failure to do
this results in spurious SIGTRAPs in certain debug sequences.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05 14:13:25 +09:00
Paul Mundt
9c57548f17 sh: rts7751r2d board updates.
This tidies up some of the rts7751r2d mess and gets it booting
again. Update the defconfig, too.

Signed-off-by: Masayuki Hosokawa <hosokawa@ace-jp.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-15 18:20:52 +09:00
Paul Mundt
e65fa9f59e sh: Kill off dead bigsur and ec3104 boards.
Neither of these have had any maintenance in years, and there's
no interest in keeping them straggling along. These have already
been slated for removal some time, so finally just get rid of them.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-14 15:06:09 +09:00
Paul Mundt
db2e1fa3f0 sh: Revert TLB miss fast-path changes that broke PTEA parts.
This ended up causing problems for older parts (particularly ones
using PTEA). Revert this for now, it can be added back in once it's
had some more testing.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-14 14:13:10 +09:00
Paul Mundt
c7666e72cf sh: define dma noncoherent API functions.
sh was missing these, too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 11:11:22 +09:00
Paul Mundt
fe82891750 sh: Missing flush_dcache_all() proto in cacheflush.h.
Some boards need this, so provide a definition.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 11:09:15 +09:00
Paul Mundt
f5df54dc2e sh: Add cpu-features header to asm/Kbuild.
This is used by the libc for parsing CPU capability flags passed
via the ELF auxvt, needed for run-time selection of atomic opcodes
amongst other things.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:46 +09:00
Paul Mundt
a5ba7d5453 sh: Move __KERNEL__ up in asm/page.h.
This was breaking the uClibc build, which triggered the bogus page
size error.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:46 +09:00
Paul Mundt
b37814352d sh: Fix syscall numbering breakage.
We accidentally broke the inotify syscalls, fix those up again.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:46 +09:00
Paul Mundt
ea9af69481 sh: Local TLB flushing variants for SMP prep.
Rename the existing flush routines to local_ variants for use by
the IPI-backed global flush routines on SMP.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:45 +09:00
Paul Mundt
11c1965687 sh: Fixup cpu_data references for the non-boot CPUs.
There are a lot of bogus cpu_data-> references that only end up working
for the boot CPU, convert these to current_cpu_data to fixup SMP.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:45 +09:00
Paul Mundt
aec5e0e1c1 sh: Use a per-cpu ASID cache.
Previously this was implemented using a global cache, cache
this per-CPU instead and bump up the number of context IDs to
match NR_CPUS.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:45 +09:00
Manuel Lauss
9f8a5e3a44 sh: SH-DMAC compile fixes
This patch does the following:
- remove the make_ipr_irq stuff from dma-sh.c and replace it
  with a simple channel<->irq mapping table.
- add DMTEx_IRQ constants for sh4 cpus
- fix sh7751 DMAE irq number

The SH7780 uses the same IRQs for DMA as other SH4 types, so
I put the constants on top of the dma.h file.

Other CPU types need to #define their own DMTEx_IRQ contants
in their appropriate header.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:45 +09:00
Paul Mundt
26b7a78c55 sh: Lazy dcache writeback optimizations.
This converts the lazy dcache handling to the model described in
Documentation/cachetlb.txt and drops the ptep_get_and_clear() hacks
used for the aliasing dcaches on SH-4 and SH7705 in 32kB mode. As a
bonus, this slightly cuts down on the cache flushing frequency.

With that and the PTEA handling out of the way, the update_mmu_cache()
implementations can be consolidated, and we no longer have to worry
about which configuration the cache is in for the SH7705 case.

And finally, explicitly disable the lazy writeback on SMP (SH-4A).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:44 +09:00
Paul Mundt
7a847f8190 sh: More tidying for large base pages.
There were a few more things that needed fixing up, namely THREAD_SIZE
and the TLB miss handler where certain PTRS_PER_PGD == PTRS_PER_PTE
assumptions were being made.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:44 +09:00
SUGIOKA Toshinobu
106dac130d sh: syscall 300 should be __NR_fstatat64.
syscall number 300 fails while testing with latest LTP
(ltp-full-20061121.tgz) on sh.

sys_fstatat64 is called on syscall 300 (see arch/sh/kernel/syscalls.S),
and __ARCH_WANT_STAT64 is defined in include/asm-sh/unistd.h, so
following patch seems correct.

Signed-off-by: SUGIOKA Toshinobu <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:44 +09:00
Paul Mundt
f413d0d9fa sh: Use a jump call table for debug trap handlers.
This rips out most of the needlessly complicated sh_bios and kgdb
trap handling, and forces it all through a common fast dispatch path.
As more debug traps are inserted, it's important to keep them in sync
for all of the parts, not just SH-3/4.

As the SH-2 parts are unable to do traps in the >= 0x40 range, we
restrict the debug traps to the 0x30-0x3f range on all parts, and
also bump the kgdb breakpoint trap down in to this range (from 0xff
to 0x3c) so it's possible to use for nommu.

Optionally, this table can be padded out to catch spurious traps for
SH-3/4, but we don't do that yet..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13 10:54:43 +09:00
Tilman Schmidt
4564f9e5fd [PATCH] consolidate line discipline number definitions
The line discipline numbers N_* are currently defined for each architecture
individually, but (except for a seeming mistake) identically, in
asm/termios.h.  There is no obvious reason why these numbers should be
architecture specific, nor any apparent relationship with the termios
structure.  The total number of these, NR_LDISCS, is defined in linux/tty.h
anyway.  So I propose the following patch which moves the definitions of
the individual line disciplines to linux/tty.h too.

Three of these numbers (N_MASC, N_PROFIBUS_FDL, and N_SMSBLOCK) are unused
in the current kernel, but the patch still keeps the complete set in case
there are plans to use them yet.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:26 -08:00
Paul Mundt
0a9b0db192 [APM] SH: Convert to use shared APM emulation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-02-09 17:08:58 +00:00
Ralf Baechle
ec8c0446b6 [PATCH] Optimize D-cache alias handling on fork
Virtually index, physically tagged cache architectures can get away
without cache flushing when forking.  This patch adds a new cache
flushing function flush_cache_dup_mm(struct mm_struct *) which for the
moment I've implemented to do the same thing on all architectures
except on MIPS where it's a no-op.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:27:08 -08:00
Rafael J. Wysocki
8a102eed9c [PATCH] PM: Fix SMP races in the freezer
Currently, to tell a task that it should go to the refrigerator, we set the
PF_FREEZE flag for it and send a fake signal to it.  Unfortunately there
are two SMP-related problems with this approach.  First, a task running on
another CPU may be updating its flags while the freezer attempts to set
PF_FREEZE for it and this may leave the task's flags in an inconsistent
state.  Second, there is a potential race between freeze_process() and
refrigerator() in which freeze_process() running on one CPU is reading a
task's PF_FREEZE flag while refrigerator() running on another CPU has just
set PF_FROZEN for the same task and attempts to reset PF_FREEZE for it.  If
the refrigerator wins the race, freeze_process() will state that PF_FREEZE
hasn't been set for the task and will set it unnecessarily, so the task
will go to the refrigerator once again after it's been thawed.

To solve first of these problems we need to stop using PF_FREEZE to tell
tasks that they should go to the refrigerator.  Instead, we can introduce a
special TIF_*** flag and use it for this purpose, since it is allowed to
change the other tasks' TIF_*** flags and there are special calls for it.

To avoid the freeze_process()-refrigerator() race we can make
freeze_process() to always check the task's PF_FROZEN flag after it's read
its "freeze" flag.  We should also make sure that refrigerator() will
always reset the task's "freeze" flag after it's set PF_FROZEN for it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Andi Kleen <ak@muc.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:49 -08:00
Paul Mundt
41504c3972 sh: SH-MobileR SH7722 CPU support.
This adds CPU support for the SH7722.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:09 +09:00
Paul Mundt
5432143464 sh: Fixup dma_cache_sync() callers.
This now takes a struct device, update all of the callers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:09 +09:00
Paul Mundt
dc34d312c7 sh: BUG() handling through trapa vector.
Previously we haven't been doing anything with verbose BUG() reporting,
and we've been relying on the oops path for handling BUG()'s, which is
rather sub-optimal.

This switches BUG handling to use a fixed trapa vector (#0x3e) where we
construct a small bug frame post trapa instruction to get the context
right. This also makes it trivial to wire up a DIE_BUG for the atomic
die chain, which we couldn't really do before.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:08 +09:00
Paul Mundt
ec723fbe7e sh: Split out atomic ops logically.
We have a few different ways to do the atomic operations, so split
them out in to different headers rather than bloating atomic.h.
Kernelspace gUSA will take this up to a third implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:08 +09:00
Paul Mundt
b6250e3729 sh: landisk board build fixes.
Get the landisk board building again..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:07 +09:00
Paul Mundt
fce3a24e70 sh: push-switch fixups for work_struct API damage.
INIT_WORK() dropped the data arg, so now we have to stash an extra
pointer and backpedal instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:07 +09:00
Paul Mundt
b482ad5dae sh: Shut up csum_ipv6_magic() warnings.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:07 +09:00
Paul Mundt
b9b382dabb sh: Reworked swap cache entry encoding for SH-X2 MMU.
In the 64-bit PTE case there's no point in restricting the encoding
to the low bits of the PTE, we can instead bump all of this up to
the high 32 bits and extend PTE_FILE_MAX_BITS to 32, adopting the
same convention used by x86 PAE.

There's a minor discrepency between the number of bits used for the
swap type encoding between 32 and 64-bit PTEs, but this is unlikely
to cause any problem given the extended offset.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12 08:42:06 +09:00
Alan Cox
be90038a24 [PATCH] tty: preparatory structures for termios revamp
In order to sort out our struct termios and add proper speed control we need
to separate the kernel and user termios structures.  Glibc is fine but the
other libraries rely on the kernel exported struct termios and we need to
extend this without breaking the ABI/API

To do so we add a struct ktermios which is the kernel view of a termios
structure and overlaps the struct termios with extra fields on the end for
now.  (That limitation will go away in later patches).  Some platforms (eg
alpha) planned ahead and thus use the same struct for both, others did not.

This just adds the structures but does not use them, it seems a sensible
splitting point for bisect if there are compile failures (not that I expect
them)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:56 -08:00
Adrian Bunk
7d1362c0d0 [PATCH] cleanup asm/setup.h userspace visibility
Make the contents of the userspace asm/setup.h header consistent on all
architectures:

 - export setup.h to userspace on all architectures
 - export only COMMAND_LINE_SIZE to userspace
 - frv: move COMMAND_LINE_SIZE from param.h
 - i386: remove duplicate COMMAND_LINE_SIZE from param.h
 - arm:
   - export ATAGs to userspace
   - change u8/u16/u32 to __u8/__u16/__u32

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:46 -08:00
Ralf Baechle
d3fa72e455 [PATCH] Pass struct dev pointer to dma_cache_sync()
Pass struct dev pointer to dma_cache_sync()

dma_cache_sync() is ill-designed in that it does not have a struct device
pointer argument which makes proper support for systems that consist of a
mix of coherent and non-coherent DMA devices hard.  Change dma_cache_sync
to take a struct device pointer as first argument and fix all its callers
to pass it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:41 -08:00
Arnd Bergmann
f5738ceed4 [PATCH] remove kernel syscalls
The last thing we agreed on was to remove the macros entirely for 2.6.19,
on all architectures. Unfortunately, I think nobody actually _did_ that,
so they are still there.

[akpm@osdl.org: x86_64 fix]
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Greg Schafer <gschafer@zip.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:37 -08:00
Jamie Lenehan
ea0f8feaa0 sh: sh775x/titan fixes for irq header changes.
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>
2006-12-06 12:05:02 +09:00
Paul Mundt
5b67954e80 sh: Fixup pte_mkhuge() build failure.
When hugetlbpage support isn't enabled, this can be bogus.
Wrap it back in _PAGE_FLAGS_HARD to avoid changes to the
base PTE when not aiming for larger sizes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 11:20:53 +09:00
Paul Mundt
afbfb52e47 sh: stacktrace/lockdep/irqflags tracing support.
Wire up all of the essentials for lockdep..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:40 +09:00
Paul Mundt
c03c69610b sh: Fixup movli.l/movco.l atomic ops for gcc4.
gcc4 gets a bit pissy about the outputs:

include/asm/atomic.h: In function 'atomic_add':
include/asm/atomic.h:37: error: invalid lvalue in asm statement
include/asm/atomic.h:30: error: invalid lvalue in asm output 1
...

this ended up being a thinko anyways, so just fix it up.

Verified for proper behaviour with the older toolchains, too.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:40 +09:00
Paul Mundt
bd156147eb sh: dyntick infrastructure.
This adds basic NO_IDLE_HZ support to the SH timer API so timers
are able to wire it up. Taken from the ARM version, as it fit in
to our API with very few changes needed.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:40 +09:00
Paul Mundt
1d118562c2 sh: Clock framework tidying.
This syncs up the SH clock framework with the linux/clk.h API,
for which there were only some minor changes required, namely
the clk_get() dev_id and subsequent callsites.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:40 +09:00
Paul Mundt
510c72ad2d sh: Fixup various PAGE_SIZE == 4096 assumptions.
There were a number of places that made evil PAGE_SIZE == 4k
assumptions that ended up breaking when trying to play with
8k and 64k page sizes, this fixes those up.

The most significant change is the way we load THREAD_SIZE,
previously this was done via:

	mov	#(THREAD_SIZE >> 8), reg
	shll8	reg

to avoid a memory access and allow the immediate load. With
a 64k PAGE_SIZE, we're out of range for the immediate load
size without resorting to special instructions available in
later ISAs (movi20s and so on). The "workaround" for this is
to bump up the shift to 10 and insert a shll2, which gives a
bit more flexibility while still being much cheaper than a
memory access.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:39 +09:00
Mark Glaisher
db9b99d461 sh: dma-api channel capability extensions.
This extends the SH DMA API for allowing handling of DMA
channels based off of their respective capabilities.

A couple of functions are added to the existing API,
the core bits are register_chan_caps() for registering
channel capabilities, and request_dma_bycap() for fetching
a channel dynamically based off of a capability set.

Signed-off-by: Mark Glaisher <mark.glaisher@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:39 +09:00
Stuart Menefy
c9f0b1c141 sh: KSTK_EIP/KSTK_ESP consistency.
Two of the fields in /proc/[number]/stat are documented in
proc(5) as:

      kstkesp %lu
	     The current value of esp (stack pointer), as
	     found in the kernel stack page for the process.

      kstkeip %lu
	     The current EIP (instruction pointer).

The SH currently prints the the last SP and PC of the process
inside the kernel, while most other archs use the last user
space values.

This patch modifes the SH to display the user space values.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:38 +09:00
Stuart Menefy
9b3a53ab76 sh: TLB miss fast-path optimizations.
Handle simple TLB miss faults which can be resolved completely
from the page table in assembler.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:38 +09:00
Paul Mundt
9f5e8eee5c sh: generic push-switch framework.
This adds support for a generic push switch framework. Adaptable for
various switches, including GPIO switches and the push switches commonly
found on Renesas debug boards.

This allows switch states to be trivially reported through sysfs.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:38 +09:00
Stuart Menefy
99a596f93b sh: pmd rework.
Remove extra bits from the pmd structure and store a kernel logical
address rather than a physical address. This allows it to be directly
dereferenced. Another piece of wierdness inherited from x86.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:38 +09:00
Stuart Menefy
6e4662ff49 sh: Use MMU.TTB register as pointer to current pgd.
Add TTB accessor functions and give it a sensible default
value. We will use this later for optimizing the fault
path.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:38 +09:00
Stuart Menefy
b5a1bcbee4 sh: Set up correct siginfo structures for page faults.
Remove the previous saving of fault codes into the thread_struct
as they are never used, and appeared to be inherited from x86.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:38 +09:00
Paul Mundt
21440cf04a sh: Preliminary support for SH-X2 MMU.
This adds some preliminary support for the SH-X2 MMU, used by
newer SH-4A parts (particularly SH7785).

This MMU implements a 'compat' mode with SH-X MMUs and an
'extended' mode for SH-X2 extended features. Extended features
include additional page sizes (8kB, 4MB, 64MB), as well as the
addition of page execute permissions.

The extended mode attributes are placed in a second data array,
which requires us to switch to 64-bit PTEs when in X2 mode.

With the addition of the exec perms, we also overhaul the mmap
prots somewhat, now that it's possible to handle them more
intelligently.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:37 +09:00
Paul Mundt
b552c7e8bc sh: Hook SH7785 in to the build system.
Simple 7785 placeholders to start hooking up other bits of code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:37 +09:00
Paul Mundt
9a7ef6d59f sh: Drop CPU subtype IRQ headers.
This drops the various IRQ headers that were floating around
and primarily providing hardcoded IRQ definitions for the
various CPU subtypes. This quickly got to be an unmaintainable
mess, made even more evident by the subtle breakage introduced
by the SH-2 and SH-2A changes.

Now that subtypes are able to register IRQ maps directly, just
rip all of the headers out.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:37 +09:00
Paul Mundt
710ee0cc45 sh: SE7206 build fixes.
A number of API changes happened underneath the 7206 patches, update
for everything that broke.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:37 +09:00
Yoshinori Sato
b229632abd sh: Add SH-2A platform headers.
Mostly SH-2 wrappers..

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06 10:45:36 +09:00
Matthew Wilcox
e62438630c [PATCH] Centralise definitions of sector_t and blkcnt_t
CONFIG_LBD and CONFIG_LSF are spread into asm/types.h for no particularly
good reason.

Centralising the definition in linux/types.h means that arch maintainers
don't need to bother adding it, as well as fixing the problem with
x86-64 users being asked to make a decision that has absolutely no
effect.

The H8/300 porters seem particularly confused since I'm not aware of any
microcontrollers that need to support 2TB filesystems.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-04 19:41:15 -08:00
Al Viro
7c73a746ba [NET]: SH checksum annotations and cleanups.
* sanitize prototypes, annotate
* kill useless shifts
* usual ntohs->shift

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:23:22 -08:00
Benjamin Herrenschmidt
c6dbaef22a Driver core: add dev_archdata to struct device
Add arch specific dev_archdata to struct device

Adds an arch specific struct dev_arch to struct device. This enables
architecture to add specific fields to every device in the system, like
DMA operation pointers, NUMA node ID, firmware specific data, etc...

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Andi Kleen <ak@suse.de>
Acked-By: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:52:01 -08:00
Jamie Lenehan
bd71ab88de sh: Fix IPR-IRQ's for IRQ-chip change breakage.
The conversion from IPR-IRQ to IRQ-chip resulted in the
ipr data being allocated in a local variable in
make_ipr_irq - breaking anything using IPR interrupts.

This changes all of the callers of make_ipr_irq to
allocate a static structure containing the IPR data which
is then passed to make_ipr_irq. This removes the need for
make_ipr_irq to allocate any additional space for the IPR
information.

Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-31 12:53:28 +09:00
Paul Mundt
6887d83d6a sh: Wire up new syscalls.
This wires up sys_move_pages, sys_getcpu, and sys_epoll_pwait.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-31 12:53:28 +09:00
Paul Mundt
66a740572d sh: Convert INTC2 to IRQ table registration.
Currently the INTC2 code contains a fixed IRQ table that it
iterates through to set the handler type, we move this in to
the CPU subtype setup code instead and allow for submitting
the table that way.

This drops the ST40 tables, as nothing has been happening
with those processors, while converting the only existing
users to use the new table directly (SH7760 and SH7780).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-20 15:30:55 +09:00
Paul Mundt
c2a560f533 sh: Add some missing board headers.
Some of these were dropped in the header directory rework, add
the few missing ones back in.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-19 17:31:22 +09:00
Paul Mundt
1f666587db sh: Fix exception_handling_table alignment.
With the recent change ripping out interrupt_table, explicit
padding of the table was missing, causing bad things to happen
when manually inserting handlers in to the table. This problem
particularly showed up in relation to do_fpu_state_restore()
which was inserted quite deeply in to the table and ended up
scribbling over a slab object.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-19 16:30:32 +09:00
Paul Mundt
082c44d20e sh: Cleanup board header directories.
Now with the ide.h mess sorted out, most of these boards
don't need their own directory. Move the headers out, and
update the driver paths.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-19 16:30:32 +09:00
Paul Mundt
4a58eaca7c sh: Remove board-specific ide.h headers.
The driver that these were using never made it in to
drivers/ide, so kill off the rest of the cruft. These
will have to be reworked for board-specific platform
devices through libata when they're added back through
the setup code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-19 16:30:32 +09:00
Paul Mundt
6b0022305f sh: Proper show_stack/show_trace() implementation.
This splits out some of the previous show_stack() implementation which
was mostly doing the show_trace() work without actually dumping any of
the stack contents. This now gets split in to two sections, where we
do the fetching of the stack pointer and subsequent stack dumping in
show_stack(), while moving the call trace in to show_trace().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-19 16:30:31 +09:00
Linus Torvalds
9eb2007488 Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: SH-4A UBC support
  sh: interrupt exception handling rework
  sh: Default enable R7780RP IRQs.
  sh: Zero-out coherent buffer in consistent_alloc().
  sh: Convert IPR-IRQ to IRQ chip.
  sh: Convert INTC2 IRQ handler to irq_chip.
  sh: Fix pr_debug statements for sh4
  sh: Convert r7780rp IRQ handler to IRQ chip.
  sh: Updates for IRQ handler changes.
  sh: Kill off timer_ops get_frequency().
  sh: First step at generic timeofday support.
2006-10-12 08:33:23 -07:00
Ryusuke Sakato
8ae91b9ad8 sh: SH-4A UBC support
A simple patch to enable the UBC on SH-4A.

Signed-off-by: Ryusuke Sakato <sakato@hsdv.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-12 12:16:13 +09:00
Matthew Wilcox
e50190a834 [PATCH] Consolidate check_signature
There's nothing arch-specific about check_signature(), so move it to
<linux/io.h>.  Use a cross between the Alpha and i386 implementations as
the generic one.

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11 11:14:23 -07:00