Commit Graph

555 Commits

Author SHA1 Message Date
Michal Simek
af2b021fd6 microblaze: Remove unused variable from ptrace
Patch b3c1e01a09 should do it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-07 15:47:55 +02:00
John Linn
7a325aa26c microblaze: io.h: Add io big-endian function
Add new io big-endian function. They will be used
for uartlite and spi driver.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-07 15:47:37 +02:00
Michal Simek
4bb30baa6d microblaze: Fix futex code
Use logical and NOT for ANDN. It was likely type fault.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-07 07:27:25 +02:00
Steven J. Magnani
d2bf98e6fc microblaze: Fix ftrace_update_ftrace_func panic
The Microblaze dynamic ftrace code assumes a call ordering that is not met
in all scenarios. Specifically, executing a command similar to:

  echo 105 > /sys/kernel/debug/tracing/set_ftrace_pid

before any other tracing-related commands results in a kernel panic:

  BUG: failure at arch/microblaze/kernel/ftrace.c:198/ftrace_update_ftrace_func()!

Recoding ftrace_update_ftrace_func() to use &ftrace_caller directly eliminates
the need to capture its address elsewhere (and thus rely on a particular call
sequence).

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-07 07:27:25 +02:00
Tejun Heo
336f5899d2 Merge branch 'master' into export-slabh 2010-04-05 11:37:28 +09:00
Michal Simek
ca3865bae5 microblaze: Support word copying in copy_tofrom_user
Word copying is used only for aligned addresses.
Here is space for improving to use any better copying technique.
Look at memcpy implementation.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:25 +02:00
Michal Simek
6059b3cbeb microblaze: Print early printk information to log buffer
If early printk console is not enabled then all messages
are written to log buffer.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:25 +02:00
Michal Simek
3f21893586 microblaze: head.S typo fix
I forget to change register name in comments.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:24 +02:00
Michal Simek
0691c97d74 microblaze: Use MICROBLAZE_TLB_SIZE in asm code
TLB size was hardcoded in asm code. This patch brings ability
to change TLB size only in one place. (mmu.h).

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:24 +02:00
Michal Simek
9373dd6ab1 microblaze: Kconfig Fix - pci
I forget to remove pci Kconfig option.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:24 +02:00
Michal Simek
78ebfa884b microblaze: Adding likely macros
On the base on GCOV analytics is helpful to add likely/unlikely
macros.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:24 +02:00
Michal Simek
13851966da microblaze: Add .type and .size to ASM functions
Cachegrind analysis need this fix to be able to log asm functions.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:24 +02:00
Michal Simek
e84452dd9f microblaze: Fix TLB macros
To be able to do trace TLB operations.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:24 +02:00
Michal Simek
3765d6958d microblaze: Use instruction with delay slot
Sync labels.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:23 +02:00
Michal Simek
bd1637d63e microblaze: Remove additional resr and rear loading
RESR and REAR uses the same regs in whole file.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:23 +02:00
Michal Simek
b175bcfe31 microblaze: Change register usage for ESR and EAR
This change synchronize register usage in code.
ESR = R4
EAR = R3

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:23 +02:00
Michal Simek
7a6bbdc930 microblaze: Prepare work for optimization in exception code
Any sync branch must follow mts instructions not mfs.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:23 +02:00
Michal Simek
708e7153d6 microblaze: Add DEBUG option
Disable debug option in asm code.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:23 +02:00
Michal Simek
ee68f1745e microblaze: Support systems without lmb bram
When the system has no lmb bram, main memory should be start from
zero because of microblaze vectors.

DTS fragment could look like:
	DDR2_SDRAM: memory@0 {
		device_type = "memory";
		reg = < 0x0 0x10000000 >;
	} ;

Then you have to setup CONFIG_KERNEL_BASE_ADDR=0 which caused
that kernel physical start address will be zero. On reset vector place
will be jump to 0x100 and on 0x100 starts kernel text.

You have to solve how to load the kernel before cpu starts.
Tested with XMD.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:23 +02:00
Michal Simek
89ae9753ae microblaze: uaccess: Sync strlen, strnlen, copy_to/from_user
Last sync.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:23 +02:00
Michal Simek
94804a9b3d microblaze: uaccess: Unify __copy_tofrom_user
Move to generic location.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:22 +02:00
Michal Simek
cca79120c2 microblaze: uaccess: Move functions to generic location
noMMU and MMU use them.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:22 +02:00
Michal Simek
ef4e277b5d microblaze: uaccess: Fix put_user for noMMU
Here is small regression on dhrystone tests and I think
that on all benchmarking tests. It is due to better checking
mechanism in put_user macro

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:22 +02:00
Michal Simek
3a6d77245e microblaze: uaccess: Fix get_user macro for noMMU
Use unified version.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:22 +02:00
Michal Simek
527bdb52d5 microblaze: uaccess: fix clear_user for noMMU kernel
Previous patches fixed only MMU version and this is the first
patch for noMMU kernel

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:21 +02:00
Michal Simek
40e11e3380 microblaze: uaccess: Fix strncpy_from_user function
Generic implementation for noMMU and MMU version

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:21 +02:00
Michal Simek
4270690bd4 microblaze: uaccess: fix copy_from_user macro
copy_from_user macro also use copy_tofrom_user function

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:21 +02:00
Michal Simek
cc5a428b7a microblaze: uaccess: copy_to_user unification
noMMU and MMU kernel will use copy copy_tofrom_user
asm implementation.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:20 +02:00
Michal Simek
0dcb409de7 microblaze: uaccess: sync put/get/clear_user macros
Add macro description and resort.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:20 +02:00
Michal Simek
8b651aa4a7 microblaze: uaccess: fix put_user and get_user macros
Use FIXUP macros and resort them.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:20 +02:00
Michal Simek
c77a9c4bb7 microblaze: uaccess: fix __get_user_asm macro
It is used __FIXUP_SECTION and __EX_TABLE_SECTION macros.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:20 +02:00
Michal Simek
40b1156db0 microblaze: uaccess: fix clean user macro
This is the first patch which does uaccess unification.
I choosed to do several patches to be able to use bisect
in future if any fault happens.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:20 +02:00
Michal Simek
60a729f7bb microblaze: move noMMU __range_ok function to uaccess.h
The same noMMU and MMU functions should be placed in
one file.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:20 +02:00
Michal Simek
357bc3c928 microblaze: Move exception_table_entry upward
Just sort to be able remove whole block.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:19 +02:00
Michal Simek
40db083433 microblaze: Remove segment.h
I would like to use asm-generic uaccess.h where are segment
macros defined. This is just first step.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:19 +02:00
Michal Simek
4009819cf9 microblaze: Remove memset in free_init_pages
We don't need to do it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:19 +02:00
Arun Bhanu
6fa114e0f1 microblaze: Makefile cleanups
If CONFIG_INITRAMFS_SOURCE is set, "scripts/gen_initramfs_list.sh"
checks if the cpio image exists. Remove the duplicate check from the
Makefile.

Remove the "clean-kernel" variable which is unused in the Makefile and
is not used by the Kbuild.

Signed-off-by: Arun Bhanu <arun@bhanu.net>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:19 +02:00
Arun Bhanu
8a8804f1ab microblaze: Fix Makefile to delete build generated files
'make clean' does not to delete the following build generated file:
	arch/microblaze/boot/linux.bin.ub

'make mrproper' does not to delete the following build generated files:
	arch/microblaze/boot/simpleImage.*

Fix the Makefile to delete these build generated files.

See [1] for a discussion on why simpleImage.* files are deleted with 'make
mrproper' and not with 'make clean'.
	[1] http://lkml.org/lkml/2010/3/12/96

Signed-off-by: Arun Bhanu <arun@bhanu.net>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:19 +02:00
Arun Bhanu
699d17bc14 microblaze: Add a missing single quote to make 'make help' happy
'make ARCH=microblaze help' fails with the following error due to a
missing single quote.

/bin/sh: -c: line 0: unexpected EOF while looking for matching `''
/bin/sh: -c: line 1: syntax error: unexpected end of file
make: *** [help] Error 2

Signed-off-by: Arun Bhanu <arun@bhanu.net>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:19 +02:00
Steven J. Magnani
0c4ec16b86 microblaze: Fix "kstack=" parsing
The "kstack=" command line parameter is not parsed correctly.
All proper values are interpreted as zero.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:18 +02:00
Tejun Heo
5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Linus Torvalds
722874465e Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (27 commits)
  microblaze: entry.S use delay slot for return handlers
  microblaze: Save current task directly
  microblaze: Simplify entry.S - save/restore r3/r4 - ret_from_trap
  microblaze: PCI early support for noMMU system
  microblaze: Fix dma alloc and free coherent dma functions
  microblaze: Add consistent code
  microblaze: pgtable.h: move consistent functions
  microblaze: Remove ancient Kconfig option for consistent mapping
  microblaze: Remove VMALLOC_VMADDR
  microblaze: Add define for ASM_LOOP
  microblaze: Preliminary support for dma drivers
  microblaze: remove trailing space in messages
  microblaze: Use generic show_mem()
  microblaze: Change temp register for cmdline
  microblaze: Preliminary support for dma drivers
  microblaze: Move cache function to cache.c
  microblaze: Add support from PREEMPT
  microblaze: Add support for Xilinx PCI host bridge
  microblaze: Enable PCI, missing files
  microblaze: Add core PCI files
  ...
2010-03-18 16:57:24 -07:00
Christoph Hellwig
fa1ac57a31 microblaze: use generic ptrace_resume code
Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT and
PTRACE_KILL.  This also makes PTRACE_SINGLESTEP return -EIO while it
previously succeeded despite not actually causing any kind of single
stepping.

Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which
it previously wasn't which is consistent with all architectures using the
modern ptrace code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Acked-by: Michal Simek <monstr@monstr.eu>
Cc: John Williams <john.williams@petalogix.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12 15:52:39 -08:00
Christoph Hellwig
b3c1e01a09 ptrace: use ptrace_request() in the remaining architectures
Use ptrace_request() in the three remaining architectures that didn't use it
(m68knommu, h8300, microblaze).  This means:

 - ptrace_request now handles PTRACE_{PEEK,POKE}{TEXT,DATA} and PTRACE_DETATCH
   calls that were previously called directly, or in case of h8300 even open
   coded.
 - adds new support for PTRACE_SETOPTIONS/PTRACE_GETEVENTMSG/
   PTRACE_GETSIGINFO/PTRACE_SETSIGINFO

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Michal Simek <monstr@monstr.eu>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-12 15:52:38 -08:00
Michal Simek
841d6e8c4e microblaze: entry.S use delay slot for return handlers
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:26:13 +01:00
Michal Simek
8633bebc63 microblaze: Save current task directly
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:25:54 +01:00
Michal Simek
b1d70c62ff microblaze: Simplify entry.S - save/restore r3/r4 - ret_from_trap
There is possible to save r3/r4 at the beggining of user part
before calling handlers and at the end restore it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:25:30 +01:00
Michal Simek
79bf3a1376 microblaze: PCI early support for noMMU system
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:16:17 +01:00
Michal Simek
1be53e084a microblaze: Fix dma alloc and free coherent dma functions
We have to use consistent code to be able to do coherent dma
function. In consistent code is used cache inhibit page mapping.
Xilinx reported that there is bug in Microblaze for WB and
d-cache_always use option. Microblaze 7.30.a should be first version
where is this bug removed.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:15:48 +01:00
Michal Simek
3a0d7a4dd5 microblaze: Add consistent code
Remove ancient Kconfig option for consistent code.
MMU uses cache inhibit pages.

noMMU uses UNCACHE SHADOW feature where is used double ram size.
For example:
Physical ram is 256MB and cache are setup to cover the same size.
But if you setup in HW that size is 512MB and cache covers 256MB
than you can use adresses from 256-512MB without caches and
correspond with 0-256MB with cache. That's why I am using
dcache base/high addresses to find out uncache area.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:14:43 +01:00
Michal Simek
ae8ee15051 microblaze: pgtable.h: move consistent functions
Consistent functions will be used for noMMU and MMU kernels.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:14:20 +01:00
Michal Simek
b8a84059b5 microblaze: Remove ancient Kconfig option for consistent mapping
We don't use CONSISTENT option from Kconfig that's why I am removing them.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:13:34 +01:00
Michal Simek
cca5613f02 microblaze: Remove VMALLOC_VMADDR
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:13:10 +01:00
Michal Simek
22607a2821 microblaze: Add define for ASM_LOOP
It is default option but both options must be measured.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:12:50 +01:00
Michal Simek
dcbae4be90 microblaze: Preliminary support for dma drivers
I found several problems for ll_temac driver and on system with WB.
This early fix should fix it. I will clean this patch before I will add
it to mainline

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:10:02 +01:00
Frans Pop
4c912c1a33 microblaze: remove trailing space in messages
Signed-off-by: Frans Pop <elendil@planet.nl>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:09:29 +01:00
Michal Simek
e786c6ad2b microblaze: Use generic show_mem()
Remove arch-specific show_mem() in favor of the generic version.
It is based on powerpc patch.
bda2fa5355

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:09:12 +01:00
Michal Simek
137d0795a7 microblaze: Change temp register for cmdline
For copy was used r7 register when CONFIG_CMDLINE_BOOL option
is enabled. But r7 stores pointer to fdt that's why machine_early_init
not detect compiled-in DTB.

I also moved kernel PID setup to have TLB init in one block

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:08:55 +01:00
Michal Simek
d79f3b06a9 microblaze: Preliminary support for dma drivers
I found several problems for ll_temac driver and on system with WB.
This early fix should fix it. I will clean this patch before I will add
it to mainline

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:08:33 +01:00
Michal Simek
407c1da07d microblaze: Move cache function to cache.c
It is better to have init cache handling on one place.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:07:57 +01:00
Michal Simek
7775379057 microblaze: Add support from PREEMPT
This patch add core PREEMPT support for Microblaze.
I tried to trace it via tracers and I was able to see any output.

I also added low level debug functions to see if that code is called.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:07:32 +01:00
Michal Simek
733cc21831 microblaze: Add support for Xilinx PCI host bridge
This patch is based on powerpc patch
64f1650247

We did some cleanups and removed powerpc parts.
There is one new debug early listing function too.

Exclude function is only in Debug options.

We tested in on custom board.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:05:18 +01:00
Michal Simek
a6475c1322 microblaze: Enable PCI, missing files
There are two parts of changes. The first is just enable
PCI in Makefiles and in Kconfig. The second is the rest of
missing files. I didn't want to add it with previous patch
because that patch is too big.

Current Microblaze toolchain has problem with weak symbols
that's why is necessary to apply this changes to be possible
to compile pci support.
Xilinx knows about this problem.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:04:27 +01:00
Michal Simek
d3afa58c20 microblaze: Add core PCI files
Add pci-common.h and pci32.c. Files are based on PPC version.
There are removed ppc specific parts and the code was completely
clean.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:03:22 +01:00
Michal Simek
2ed975b43c microblaze: Add pci-bridge.h
Add pci-bridge.h for Microblaze. It is based on powerpc header file.
My changes:
I removed PPC_ prefix from constants
Removed ppc64 specifis parts

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:01:43 +01:00
Michal Simek
830980a0a8 microblaze: Add pci.h
Add pci.h for microblaze. It is based on powerpc pci.h

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:00:43 +01:00
Michal Simek
2ddafeab6f microblaze: io.h include asm-generic/iomap.h
I need to use generic/iomap.h for PCI that's why is necessary
to include it and fix ioport_{map,unmap} functions.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 14:00:09 +01:00
Michal Simek
c6ba01a4c7 microblaze: Add irq_create_{of_,}mapping functions
Support function for PCI. We don't use any advance mapping mechanism
that's why implementation is simple.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 13:59:28 +01:00
Michal Simek
a84642a339 microblaze: Add {z,}alloc_maybe_bootmem functions
I will need {z,}alloc_maybe_bootmem functions for pci patches

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 13:59:02 +01:00
Michal Simek
2549edd353 microblaze: Implement __dma_sync_page
There is necessary to do some cache handling for dma operations.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 13:58:11 +01:00
Michal Simek
ccfe27d700 microblaze: Support DMA
Add DMA support for Microblaze. There are some part of this new feature:
1. Basic DMA support
2. Enable DMA debug option
3. Setup notifier

Ad 1. dma-mapping come from powerpc and x86 version and it is based on
generic dma-mapping-common.h

Ad 2. DMA support debug features which is used in generic file.
For more information please look at Documentation/DMA-API.txt

Ad 3. notifier is very important to setup dma_ops. Without this part
for example ll_temac driver failed because there are no setup dma operations.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-03-11 13:56:29 +01:00
Linus Torvalds
0a135ba14d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu: add __percpu sparse annotations to what's left
  percpu: add __percpu sparse annotations to fs
  percpu: add __percpu sparse annotations to core kernel subsystems
  local_t: Remove leftover local.h
  this_cpu: Remove pageset_notifier
  this_cpu: Page allocator conversion
  percpu, x86: Generic inc / dec percpu instructions
  local_t: Move local.h include to ringbuffer.c and ring_buffer_benchmark.c
  module: Use this_cpu_xx to dynamically allocate counters
  local_t: Remove cpu_local_xx macros
  percpu: refactor the code in pcpu_[de]populate_chunk()
  percpu: remove compile warnings caused by __verify_pcpu_ptr()
  percpu: make accessors check for percpu pointer in sparse
  percpu: add __percpu for sparse.
  percpu: make access macros universal
  percpu: remove per_cpu__ prefix.
2010-03-03 07:34:18 -08:00
Linus Torvalds
ac0f6f927d Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
  ARM: Eliminate decompressor -Dstatic= PIC hack
  ARM: 5958/1: ARM: U300: fix inverted clk round rate
  ARM: 5956/1: misplaced parentheses
  ARM: 5955/1: ep93xx: move timer defines into core.c and document
  ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
  ARM: 5953/1: ep93xx: fix broken build of clock.c
  ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
  ARM: 5949/1: NUC900 add gpio virtual memory map
  ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
  ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
  ARM: make_coherent(): fix problems with highpte, part 2
  MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
  ARM: 5945/1: ep93xx: include correct irq.h in core.c
  ARM: 5933/1: amba-pl011: support hardware flow control
  ARM: 5930/1: Add PKMAP area description to memory.txt.
  ARM: 5929/1: Add checks to detect overlap of memory regions.
  ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
  ARM: 5927/1: Make delimiters of DMA area globally visibly.
  ARM: 5926/1: Add "Virtual kernel memory..." printout.
  ARM: 5920/1: OMAP4: Enable L2 Cache
  ...

Fix up trivial conflict in arch/arm/mach-mx25/clock.c
2010-03-01 09:15:15 -08:00
Linus Torvalds
6ebdc661b6 Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: (41 commits)
  of: remove undefined request_OF_resource & release_OF_resource
  of/sparc: Remove sparc-local declaration of allnodes and devtree_lock
  of: move definition of of_chosen into common code.
  of: remove unused extern reference to devtree_lock
  of: put default string compare and #a/s-cell values into common header
  of/flattree: Don't assume HAVE_LMB
  of: protect linux/of.h with CONFIG_OF
  proc_devtree: fix THIS_MODULE without module.h
  of: Remove old and misplaced function declarations
  of/flattree: Make the kernel accept ePAPR style phandle information
  of/flattree: endian-convert members of boot_param_header
  of: assume big-endian properties, adding conversions where necessary
  of: use __be32 for cell value accessors
  of/flattree: use OF_ROOT_NODE_{SIZE,ADDR}_CELLS DEFAULT for fdt parsing
  of/flattree: use callback to setup initrd from /chosen
  proc_devtree: include linux/of.h
  of: make set_node_proc_entry private to proc_devtree.c
  of: include linux/proc_fs.h
  of/flattree: merge early_init_dt_scan_memory() common code
  of: add 'of_' prefix to machine_is_compatible()
  ...
2010-02-25 15:38:37 -08:00
Steven J. Magnani
83b4d17d88 microblaze: Fix out_le32() macro
Trailing semicolon causes compilation involving out_le32() to fail.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-24 13:18:49 +01:00
Michal Simek
0d670b2472 microblaze: Fix cache loop function for cache range
I create wrong asm code but none test shows that this part of code is wrong.
I am not convinces that were good idea to create asm optimized macros
for caches. The reason is that there is not optimization with previous code
that's why make sense to add old code and do some benchmarking which
functions are faster.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-24 13:18:29 +01:00
Russell King
4b3073e1c5 MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
On VIVT ARM, when we have multiple shared mappings of the same file
in the same MM, we need to ensure that we have coherency across all
copies.  We do this via make_coherent() by making the pages
uncacheable.

This used to work fine, until we allowed highmem with highpte - we
now have a page table which is mapped as required, and is not available
for modification via update_mmu_cache().

Ralf Beache suggested getting rid of the PTE value passed to
update_mmu_cache():

  On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables
  to construct a pointer to the pte again.  Passing a pte_t * is much
  more elegant.  Maybe we might even replace the pte argument with the
  pte_t?

Ben Herrenschmidt would also like the pte pointer for PowerPC:

  Passing the ptep in there is exactly what I want.  I want that
  -instead- of the PTE value, because I have issue on some ppc cases,
  for I$/D$ coherency, where set_pte_at() may decide to mask out the
  _PAGE_EXEC.

So, pass in the mapped page table pointer into update_mmu_cache(), and
remove the PTE value, updating all implementations and call sites to
suit.

Includes a fix from Stephen Rothwell:

  sparc: fix fallout from update_mmu_cache API change

  Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-20 16:41:46 +00:00
Grant Likely
df0edeb59e of: remove undefined request_OF_resource & release_OF_resource
Neither request_OF_resource or release_OF_resource are defined
anywhere.  Remove the declarations.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-14 13:02:45 -07:00
Grant Likely
fc0bdae49d of: move definition of of_chosen into common code.
Rather than defining of_chosen in each arch, it can be defined for all
in driver/of/base.c

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-14 07:13:55 -07:00
Grant Likely
22d5579e66 of: remove unused extern reference to devtree_lock
Neither the powerpc nor the microblaze code use devtree_lock anymore.
Remove the extern reference.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-14 07:13:52 -07:00
Grant Likely
7c7b60cb87 of: put default string compare and #a/s-cell values into common header
Most architectures don't need to change these.  Put them into common
code to eliminate some duplication

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-14 07:13:50 -07:00
Jeremy Kerr
4ef7b373df of/flattree: Don't assume HAVE_LMB
We don't always have lmb available, so make arches provide an
early_init_dt_alloc_memory_arch() to handle the allocation of
memory in the fdt code.

When we don't have lmb.h included, we need asm/page.h for __va.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-14 07:13:47 -07:00
Jeremy Kerr
1406bc2f57 of/flattree: use callback to setup initrd from /chosen
At present, the fdt code sets the kernel-wide initrd_start and
initrd_end variables when parsing /chosen. On ARM, we only set these
once the bootmem has been reserved.

This change adds an arch hook to setup the initrd from the device
tree:

 void early_init_dt_setup_initrd_arch(unsigned long start,
				      unsigned long end);

The arch-specific code can then setup the initrd however it likes.

Compiled on powerpc, with CONFIG_BLK_DEV_INITRD=y and =n.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-02-09 08:34:10 -07:00
Grant Likely
51975db0b7 of/flattree: merge early_init_dt_scan_memory() common code
Merge common code between PowerPC and Microblaze architectures.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-09 08:33:10 -07:00
Jeremy Kerr
89751a7cb7 of: merge of_find_node_by_phandle
Merge common function between powerpc, sparc and microblaze. Code is
identical for powerpc and microblaze, but adds a lock (and release) of
the devtree_lock on sparc.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-02-09 08:32:48 -07:00
Grant Likely
fcdeb7fedf of: merge of_attach_node() & of_detach_node()
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-09 08:32:42 -07:00
Grant Likely
5805371405 microblaze: remove early_init_dt_scan_cpus() and phyp_dump_*()
Microblaze only has one CPU, it isn't SMP at all.  early_init_dt_scan_cpus()
is effectively just a no-op, so remove it.

Microblaze doesn't support hypervisor assisted dump either, so the phyp stuff
can also go.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-09 08:32:36 -07:00
Michal Simek
a601341111 microblaze: Invalidate dcache before enabling it
We found that on write-trough kernel is necessary to do that invalidation.
One WB is possible to use invalidation too.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-08 11:39:18 +01:00
Steven J. Magnani
58424a49cb microblaze: fix interrupt state restore
Interrupts must be disabled while an interrupt state restore
(prep for interrupt return) is in progress.
Code to do this was lost in the port to the mainline kernel.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-03 13:17:44 +01:00
Michal Simek
7823860ca2 microblaze: Defconfig update
There were several changes in Microblaze defconfig that's why
is good to update defconfigs.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-03 10:18:20 +01:00
Tejun Heo
ab386128f2 Merge branch 'master' into percpu 2010-02-02 14:38:15 +09:00
Grant Likely
0ada0a7312 Merge commit 'v2.6.33-rc5' into secretlab/test-devicetree 2010-01-28 14:38:25 -07:00
Grant Likely
6016a363f6 of: unify phandle name in struct device_node
In struct device_node, the phandle is named 'linux_phandle' for PowerPC
and MicroBlaze, and 'node' for SPARC.  There is no good reason for the
difference, it is just an artifact of the code diverging over a couple
of years.  This patch renames both to simply .phandle.

Note: the .node also existed in PowerPC/MicroBlaze, but the only user
seems to be arch/powerpc/platforms/powermac/pfunc_core.c.  It doesn't
look like the assignment between .linux_phandle and .node is
significantly different enough to warrant the separate code paths
unless ibm,phandle properties actually appear in Apple device trees.

I think it is safe to eliminate the old .node property and use
phandle everywhere.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-28 14:06:53 -07:00
Grant Likely
923f7e30b4 of: Merge of_node_get() and of_node_put()
Merge common code between PowerPC and MicroBlaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-28 13:52:53 -07:00
Grant Likely
1f43cfb947 of: merge machine_is_compatible()
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-28 13:47:25 -07:00
Michal Simek
878194c823 microblaze: pci_controller->arch_data really is a struct device_node *
we are follow powerpc change:
44ef339073

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18 16:36:07 +01:00
Michal Simek
296e2603cf microblaze: Add missing double apostrophe in Kconfig
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18 16:35:52 +01:00
Michal Simek
90974cb4cc microblaze: Add PT_ macros for special purpose regs
PT_ macros are used by gdb and strace uses them too.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18 16:35:39 +01:00
Michal Simek
4a3bb9a900 microblaze: Enable accept4 syscall
We had wrong name in unistd.h + I wire up this syscall
in syscall table.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18 16:35:27 +01:00
Michal Simek
ce9c37f131 microblaze: Wire up recvmmsg syscall
Patch a2e2725541 should
contain change in unistd.h too. The same problem
had MIPS.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-01-18 16:35:15 +01:00
Tejun Heo
32032df6c2 Merge branch 'master' into percpu
Conflicts:
	arch/powerpc/platforms/pseries/hvCall.S
	include/linux/percpu.h
2010-01-05 09:17:33 +09:00
Linus Torvalds
5a865c0606 Merge branch 'for-33' of git://repo.or.cz/linux-kbuild
* 'for-33' of git://repo.or.cz/linux-kbuild: (29 commits)
  net: fix for utsrelease.h moving to generated
  gen_init_cpio: fixed fwrite warning
  kbuild: fix make clean after mismerge
  kbuild: generate modules.builtin
  genksyms: properly consider  EXPORT_UNUSED_SYMBOL{,_GPL}()
  score: add asm/asm-offsets.h wrapper
  unifdef: update to upstream revision 1.190
  kbuild: specify absolute paths for cscope
  kbuild: create include/generated in silentoldconfig
  scripts/package: deb-pkg: use fakeroot if available
  scripts/package: add KBUILD_PKG_ROOTCMD variable
  scripts/package: tar-pkg: use tar --owner=root
  Kbuild: clean up marker
  net: add net_tstamp.h to headers_install
  kbuild: move utsrelease.h to include/generated
  kbuild: move autoconf.h to include/generated
  drop explicit include of autoconf.h
  kbuild: move compile.h to include/generated
  kbuild: drop include/asm
  kbuild: do not check for include/asm-$ARCH
  ...

Fixed non-conflicting clean merge of modpost.c as per comments from
Stephen Rothwell (modpost.c had grown an include of linux/autoconf.h
that needed to be changed to generated/autoconf.h)
2009-12-17 07:23:42 -08:00
Christoph Hellwig
698ba7b5a3 elf: kill USE_ELF_CORE_DUMP
Currently all architectures but microblaze unconditionally define
USE_ELF_CORE_DUMP.  The microblaze omission seems like an error to me, so
let's kill this ifdef and make sure we are the same everywhere.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: <linux-arch@vger.kernel.org>
Cc: Michal Simek <michal.simek@petalogix.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-16 07:20:12 -08:00
Thomas Gleixner
239007b844 genirq: Convert irq_desc.lock to raw_spinlock
Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
2009-12-14 23:55:33 +01:00
Michal Simek
571202f50f microblaze: Remove rt_sigsuspend wrapper
Generic rt_sigsuspend syscalls doesn't need any asm wrapper.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:12 +01:00
steve@digidescorp.com
825c9a359e microblaze: nommu: Don't clobber R11 on syscalls
The noMMU syscall trap has a bug that causes R11 to be zero on return to
userland. Remove the extra "save" of R11 responsible for the bug.

Remove reloading of mode indicator because r11 already contains it.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:11 +01:00
Michal Simek
233eb92115 microblaze: Remove show_tmem function
show_tmem function do nothing that's why I removed it.
There is also cleaning of commented ancient code.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:11 +01:00
Michal Simek
2ee2ff875a microblaze: Support for WB cache
Microblaze version 7.20.d is the first MB version which can be run
on MMU linux. Please do not used previous version because they contain
HW bug.
Based on WB support was necessary to redesign whole cache design.
Microblaze versions from 7.20.a don't need to disable IRQ and cache
before working with them that's why there are special structures for it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:10 +01:00
Michal Simek
c8983a5c6e microblaze: Add PVR for Microblaze v7.30.a
Microblaze v7.30.a will have 0x10 version string.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:10 +01:00
Michal Simek
81ab0dfd94 microblaze: Remove ancient and fake microblaze version from cpu_ver table
We need to continue with next microblaze PVR version that's why
I have to remove that ancient version. These version strings not match
any versions. From Microblaze v5.00.a is possible to use this style.
I believe that none use ancients versions. If yes they will be just
labeled as unknown version.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:09 +01:00
Michal Simek
5de2344630 microblaze: Remove panic_timeout init value
panic_timeout is in BSS section and it is cleared with BSS section.
This means that value is setup to 0.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:09 +01:00
Michal Simek
11d5136043 microblaze: Do not count system calls in default
There is not necessary to count system calls that's why
I added DEBUG macro

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:08 +01:00
Michal Simek
3c5e56724d microblaze: Enable DTC compilation
For simpleImage format we need to compile DTC. There is still possibility
to compile only Linux kernel without DTB compiled-in.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:08 +01:00
John Williams
3540ce8238 microblaze: Core oprofile configs and hooks
Microblaze uses timer interrupt mode. Microblaze don't have
any performance counter that's why we use just simple implementation.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:07 +01:00
steve@digidescorp.com
33d9ff5985 microblaze: Fix level interrupt ACKing
Level interrupts need to be ack'd in the unmask handler, as in powerpc.
Among other issues, this bug causes the system clock to appear to run at
double-speed.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:06 +01:00
Michal Simek
833d0d8da4 microblaze: Enable futimesat syscall
Futimesat was disabled. LTP testing shows that MB has no
problem with this syscall.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:06 +01:00
Michal Simek
f6e1f1b480 microblaze: Checking DTS against PVR for write-back cache
WB cache has special flag in PVR. There is added checking mechanism
for PVR and DTS.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:05 +01:00
Michal Simek
d4f182700b microblaze: Remove duplicity from pgalloc.h
just file cleanup

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:05 +01:00
Michal Simek
fd3db0a675 microblaze: Futex support
Microblaze v7.20 provides new lwx, swx instructions which bring
possibility to implement lock rutines.

There are some tests in open posix thread LTP part but current
toolchain not support it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:04 +01:00
Michal Simek
d68bf9705a microblaze: Adding dev_arch_data functions
The functions, dev_arch_data_set_node and get_node are missing
and are needed by some device drivers such as I2C.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:04 +01:00
John Linn
6d858535be microblaze: Fix the heartbeat gpio to be more robust
The device tree handling for the gpio in the heart beat was not handling
the system when there was no gpio and it wasn't working with a newer version
of the gpio core which does not have the is-bidir property.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:03 +01:00
John Williams
95dfbbe470 microblaze: Simple __copy_tofrom_user for noMMU
This is first patch which clear part of uaccess.h.
uaccess.h will be clear later.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:03 +01:00
Michal Simek
fd6ed51f4f microblaze: Export memory_start for modules
memory_start symbol is needed by kernel modules.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:02 +01:00
John Williams
4a7b40c9b8 microblaze: Use lowest-common-denominator default CPU settings
This will ensure that kernels built with no custom CPU settings will still boot
OK on hardware that has additional CPU hardware instructions etc.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:02 +01:00
Michal Simek
f99ec58b6a microblaze: Update default generic DTS
It is generated with longer compatible list

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:01 +01:00
Michal Simek
27d2a3ee5e microblaze: Enable asm optimization only for HW with barrel-shifter
Asm code uses barrel-shifter instruction that's why we have
to protect cases when HW don't have it.

Reported-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:01 +01:00
John Williams
3e78e4e5ea microblaze: Remove the buggy ALLOW_EDIT_AUTO config option
This was intended to allow manual override of CPU settings copied automatically
to Kconfig.auto, however it's problematic for several reasons, but mostly:

  * If the defconfig doesn't have ALLOW_EDIT_AUTO=y, then it's impossible for
    that defconfig to iverride the values in the kernel source tree.  This leads
    to very strange errors where the kernel is compiled with the wrong CPUFLAGS.

Next patch in the series will back out the default in Kconfig.auto to baseline
settings, so a kernel built with no default values will at least boot on any
hardware, just not make use of additional CPU features.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:00 +01:00
Michal Simek
a1f55113ca microblaze: Move cache macro from cache.h to cacheflush.h
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:45:00 +01:00
Michal Simek
6a8dfe1cac microblaze: support U-BOOT image format
Two version are generated.
linux.bin.ub which is created from linux.bin file
and
simpleImage.<dts>.ub which is created from stripped simpleImage.<dts> file

Load address and entry point is for microblaze first instruction
which is CONFIG_KERNEL_BASE_ADDR variable.

There is possible for simpleImage format parse _start symbol too.

simpleImage.<dts> is still stripped elf file

I cleared simpleImage.<dts>.unstrip file because there are so big.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:59 +01:00
Michal Simek
a01523cdcd microblaze: Ptrace notifying from signal code
After the signal frame is set up on the userspace stack, ptrace() should
be given an opportunity to single-step into the signal handler

FRV, Blackfin, mn10300 and UM. Worth to look at that patches.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:58 +01:00
Michal Simek
e051af576a microblaze: Extend cpuinfo for support write-back caches
There is missing checking agains PVR but this is not important
for now. There are some missing checking too.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:58 +01:00
Michal Simek
44e4e196a9 microblaze: Fix cache_line_lenght
We used cache_line as cache_line_lenght. For this reason
we did cache flushing 4 times longer than was necessary.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:57 +01:00
Michal Simek
6cec713b16 microblaze: Detect new 7.20.d version
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:57 +01:00
Michal Simek
67bf876654 microblaze: Support both levels for reset
Till this patch reset always perform writen to 1.
Now we can use negative logic and perform reset write to 0.

It is opposite level than is currently read from that pin

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:56 +01:00
Michal Simek
7537583040 microblaze: Fix announce message for reset gpio
I had to change message for gpio-reset because I always
not to see it. Prefix RESET is big and visible.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:56 +01:00
Michal Simek
f7816e284b microblaze: Remove saving and restoring before calling signal code
Saving is done in SAVE_STATE macros that's why another save discard
previous saved value.

This change has no effect to normal programs because they ends in any exception
and they are killed. On the other side has effect on debugging.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:55 +01:00
steve@digidescorp.com
5dd48a235c microblaze: Fix pfn_valid() for noMMU
Configuring DEBUG_SLAB causes a noMMU kernel to die during initialization
with an invalid virtual address panic in kfree_debugcheck().
The panic is due to an improper definition of pfn_valid().

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:55 +01:00
Michal Simek
4f911b0daf microblaze: ftrace: Add dynamic function graph tracer
This patch add support for dynamic function graph tracer.

There is one my expactation that I can do flush_icache after
all code modification. On microblaze is this safer than do
flush for every entry. For icache is used name flush but
correct should be invalidation - this will be fix in upcomming
new cache implementaion and WB support.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:54 +01:00
Michal Simek
a0d3e66522 microblaze: ftrace: add function graph support
For more information look at Documentation/trace folder.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:53 +01:00
Michal Simek
7d241ff056 microblaze: ftrace: Add dynamic trace support
With dynamic function tracer, by default, _mcount is defined as an
"empty" function, it returns directly without any more action. When
enabling it in user-space, it will jump to a real tracing
function(ftrace_caller), and do the real job for us.

Differ from the static function tracer, dynamic function tracer provides
two functions ftrace_make_call()/ftrace_make_nop() to enable/disable the
tracing of some indicated kernel functions(set_ftrace_filter).

In the kernel version, there is only one "_mcount" string for every
kernel function, so, we just need to match this one in mcount_regex of
scripts/recordmcount.pl.

For more information please look at code and Documentation/trace folder.

Steven ACK that scripts/recordmcount.pl part.

Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:44:01 +01:00
Michal Simek
6d9e60ce30 microblaze: ftrace: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST
Implement MCOUNT_TEST in asm code - it is faster than use
generic code

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:10 +01:00
Michal Simek
2fd7c761a2 microblaze: ftrace: add static function tracer
If -pg of gcc is enabled with CONFIG_FUNCTION_TRACER=y. a calling to
_mcount will be inserted into each kernel function. so, there is a
possibility to trace the kernel functions in _mcount.

This patch add the specific _mcount support for static function
tracing. by default, ftrace_trace_function is initialized as
ftrace_stub(an empty function), so, the default _mcount will introduce
very little overhead. after enabling ftrace in user-space, it will jump
to a real tracing function and do static function tracing for us.

Commit message from Wu Zhangjin <wuzhangjin@gmail.com>

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
Michal Simek
a3cd613b2e microblaze: Add TRACE_IRQFLAGS_SUPPORT
There are just two major changes
Renamed local_irq functions to raw_local_irq in irq.c.
Added TRACE_IRQFLAGS_SUPPORT to Kconfig.debug.

Look at Documentation/irqflags-tracing.txt

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
Michal Simek
fb5a32dc1a microblaze: preliminary enabling for LATENCYTOP support in Kconfig
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
Michal Simek
bf2d809668 microblaze: Lockdep support
Microblaze needs to do lock_init very soon because MMU init calls lock functions.

Here is the explanation from Peter Zijlstra why we have to enable
__ARCH_WANTS_INTERRUPTS_ON_CTSW.

"So we schedule while holding rq->lock (for obvious reasons), but since
lockdep tracks held locks per tasks, we need to transfer the held state
from the prev to the next task. We do this by explicity calling
spin_release(&rq->lock) in context_switch() right before switch_to(),
and calling spin_acquire(&rq->lock) in
finish_task_switch()->finish_lock_switch().

Now, for some reason lockdep thinks that interrupts got enabled over the
context switch (git grep __ARCH_WANTS_INTERRUPTS_ON_CTSW arch/microblaze
doesn't seem to turn up anything).

Clearly trying to acquire the rq->lock with interrupts enabled is a bad
idea and lockdep warns you about this."

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
Michal Simek
519e9f4173 microblaze: Register timecounter/cyclecounter
It is the same counter as we use as free running one.
I would like to use it for ftrace.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
Michal Simek
24b45a12c2 microblaze: Stack trace support
This is working implemetation but the problem is that
Microblaze misses frame pointer that's why is there
big loop which trace and show all addresses which are in text.
It shows addresses which are in registers, etc.

This is problem and this is the reason why all Microblaze
traces are wrong. There is an option to do hacks and trace
the kernel code but this is too complicated.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
Michal Simek
7cf79d59ea microblaze: Add IRQENTRY_TEXT to lds
It is important for ftrace irqsoff support

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
Michal Simek
13cdee2329 microblaze: __init_begin symbol must be aligned
The problem was that free_initmem pass to  free_initrd_mem got
bad aligned __init_begin symbol and free_initrd_mem don't care
about __init_end but take PAGE_SIZE instead.

Here is behavior in kernel bootlog.
ramdisk_execute_command from (init/main.c) was rewrite

Freeing unused kernel memory: 6224k freed
Failed to execute ��������������{���
Failed to execute ��������������{����.  Attempting defaults...
Mounting proc:
Mounting var:

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:08 +01:00
Michal Simek
42a2478b78 microblaze: GPIO reset support
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:08 +01:00
Sam Ravnborg
559df2e021 kbuild: move asm-offsets.h to include/generated
The simplest method was to add an extra asm-offsets.h
file in arch/$ARCH/include/asm that references the generated file.

We can now migrate the architectures one-by-one to reference
the generated file direct - and when done we can delete the
temporary arch/$ARCH/include/asm/asm-offsets.h file.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2009-12-12 13:08:14 +01:00
Al Viro
f8b7256096 Unify sys_mmap*
New helper - sys_mmap_pgoff(); switch syscalls to using it.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-11 06:44:29 -05:00
Grant Likely
86e0322134 of/flattree: merge early_init_dt_scan_chosen()
Merge common code between PowerPC and Microblaze.  This patch
splits the arch-specific stuff out into a new function,
early_init_dt_scan_chosen_arch().

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-10 23:42:21 -07:00
Grant Likely
0f0b56c3f2 of/flattree: eliminate cell_t typedef
A cell is firmly established as a u32.  No need to do an ugly typedef
to redefine it to cell_t.  Eliminate the unnecessary typedef so that
it doesn't have to be added to the of_fdt header file

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-10 23:42:17 -07:00
Grant Likely
83f7a06eb4 of/flattree: merge dt_mem_next_cell
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-10 15:23:15 -07:00
Grant Likely
f00abd9491 of/flattree: Merge earlyinit_dt_scan_root()
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-10 15:23:15 -07:00
Grant Likely
f7b3a8355b of/flattree: Merge early_init_dt_check_for_initrd()
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-10 15:18:03 -07:00
Linus Torvalds
4ef58d4e2a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (42 commits)
  tree-wide: fix misspelling of "definition" in comments
  reiserfs: fix misspelling of "journaled"
  doc: Fix a typo in slub.txt.
  inotify: remove superfluous return code check
  hdlc: spelling fix in find_pvc() comment
  doc: fix regulator docs cut-and-pasteism
  mtd: Fix comment in Kconfig
  doc: Fix IRQ chip docs
  tree-wide: fix assorted typos all over the place
  drivers/ata/libata-sff.c: comment spelling fixes
  fix typos/grammos in Documentation/edac.txt
  sysctl: add missing comments
  fs/debugfs/inode.c: fix comment typos
  sgivwfb: Make use of ARRAY_SIZE.
  sky2: fix sky2_link_down copy/paste comment error
  tree-wide: fix typos "couter" -> "counter"
  tree-wide: fix typos "offest" -> "offset"
  fix kerneldoc for set_irq_msi()
  spidev: fix double "of of" in comment
  comment typo fix: sybsystem -> subsystem
  ...
2009-12-09 19:43:33 -08:00
Linus Torvalds
6035ccd8e9 Merge branch 'for-2.6.33' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.33' of git://git.kernel.dk/linux-2.6-block: (113 commits)
  cfq-iosched: Do not access cfqq after freeing it
  block: include linux/err.h to use ERR_PTR
  cfq-iosched: use call_rcu() instead of doing grace period stall on queue exit
  blkio: Allow CFQ group IO scheduling even when CFQ is a module
  blkio: Implement dynamic io controlling policy registration
  blkio: Export some symbols from blkio as its user CFQ can be a module
  block: Fix io_context leak after failure of clone with CLONE_IO
  block: Fix io_context leak after clone with CLONE_IO
  cfq-iosched: make nonrot check logic consistent
  io controller: quick fix for blk-cgroup and modular CFQ
  cfq-iosched: move IO controller declerations to a header file
  cfq-iosched: fix compile problem with !CONFIG_CGROUP
  blkio: Documentation
  blkio: Wait on sync-noidle queue even if rq_noidle = 1
  blkio: Implement group_isolation tunable
  blkio: Determine async workload length based on total number of queues
  blkio: Wait for cfq queue to get backlogged if group is empty
  blkio: Propagate cgroup weight updation to cfq groups
  blkio: Drop the reference to queue once the task changes cgroup
  blkio: Provide some isolation between groups
  ...
2009-12-08 08:19:16 -08:00
Linus Torvalds
d7fc02c7ba Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1815 commits)
  mac80211: fix reorder buffer release
  iwmc3200wifi: Enable wimax core through module parameter
  iwmc3200wifi: Add wifi-wimax coexistence mode as a module parameter
  iwmc3200wifi: Coex table command does not expect a response
  iwmc3200wifi: Update wiwi priority table
  iwlwifi: driver version track kernel version
  iwlwifi: indicate uCode type when fail dump error/event log
  iwl3945: remove duplicated event logging code
  b43: fix two warnings
  ipw2100: fix rebooting hang with driver loaded
  cfg80211: indent regulatory messages with spaces
  iwmc3200wifi: fix NULL pointer dereference in pmkid update
  mac80211: Fix TX status reporting for injected data frames
  ath9k: enable 2GHz band only if the device supports it
  airo: Fix integer overflow warning
  rt2x00: Fix padding bug on L2PAD devices.
  WE: Fix set events not propagated
  b43legacy: avoid PPC fault during resume
  b43: avoid PPC fault during resume
  tcp: fix a timewait refcnt race
  ...

Fix up conflicts due to sysctl cleanups (dead sysctl_check code and
CTL_UNNUMBERED removed) in
	kernel/sysctl_check.c
	net/ipv4/sysctl_net_ipv4.c
	net/ipv6/addrconf.c
	net/sctp/sysctl.c
2009-12-08 07:55:01 -08:00
André Goddard Rosa
af901ca181 tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:55 +01:00
Ilya Loginov
2d4dc890b5 block: add helpers to run flush_dcache_page() against a bio and a request's pages
Mtdblock driver doesn't call flush_dcache_page for pages in request.  So,
this causes problems on architectures where the icache doesn't fill from
the dcache or with dcache aliases.  The patch fixes this.

The ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE symbol was introduced to avoid
pointless empty cache-thrashing loops on architectures for which
flush_dcache_page() is a no-op.  Every architecture was provided with this
flush pages on architectires where ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE is
equal 1 or do nothing otherwise.

See "fix mtd_blkdevs problem with caches on some architectures" discussion
on LKML for more information.

Signed-off-by: Ilya Loginov <isloginov@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Peter Horton <phorton@bitbox.co.uk>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-11-26 09:16:19 +01:00
Grant Likely
02af11b03f of: merge prom_{add,remove,modify}_property
Merge common code between PowerPC and MicroBlaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 20:16:45 -07:00
Grant Likely
41f880091c of/flattree: Merge unflatten_device_tree
Merge common code between PowerPC and MicroBlaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 20:07:01 -07:00
Grant Likely
bbd33931a0 of/flattree: Merge unflatten_dt_node
Merge common code between PowerPC and MicroBlaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 20:07:00 -07:00
Grant Likely
00e38efd90 of/flattree: Merge of_flat_dt_is_compatible
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 20:07:00 -07:00
Grant Likely
ca900cfa29 of/flattree: merge of_get_flat_dt_prop
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 20:06:59 -07:00
Grant Likely
819d281930 of/flattree: merge of_get_flat_dt_root
Merge common code between PowerPC and MicroBlaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 19:44:23 -07:00
Grant Likely
c8cb7a5984 of/flattree: merge of_scan_flat_dt
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 18:54:23 -07:00
Grant Likely
e169cfbef4 of/flattree: merge find_flat_dt_string and initial_boot_params
Merge common code between Microblaze and PowerPC.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
2009-11-23 14:53:09 -07:00
David S. Miller
3505d1a9fd Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/sfc/sfe4001.c
	drivers/net/wireless/libertas/cmd.c
	drivers/staging/Kconfig
	drivers/staging/Makefile
	drivers/staging/rtl8187se/Kconfig
	drivers/staging/rtl8192e/Kconfig
2009-11-18 22:19:03 -08:00
Rusty Russell
dd17c8f729 percpu: remove per_cpu__ prefix.
Now that the return from alloc_percpu is compatible with the address
of per-cpu vars, it makes sense to hand around the address of per-cpu
variables.  To make this sane, we remove the per_cpu__ prefix we used
created to stop people accidentally using these vars directly.

Now we have sparse, we can use that (next patch).

tj: * Updated to convert stuff which were missed by or added after the
      original patch.

    * Kill per_cpu_var() macro.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
2009-10-29 22:34:15 +09:00
Grant Likely
e91edcf5a2 of: merge of_find_all_nodes() implementations
Merge common code between Microblaze and PowerPC, and make it available
to Sparc

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:58:09 -06:00
Grant Likely
82b2928c95 of: merge other miscellaneous prototypes
Merge common prototypes used by Microblaze and PowerPC

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:58:07 -06:00
Grant Likely
8482f56803 of: merge of_*_flat_dt*() functions
Merge common flattened device tree code between Microblaze and PowerPC

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:58:04 -06:00
Grant Likely
526b5b3ed9 of: merge of_node_get(), of_node_put() and of_find_all_nodes()
Merge common code between Sparc, PowerPC and Microblaze.

Sparc differs in the implementation at this point, so this patch uses
a #ifdef to handle sparc differently for now.  The merging of
implementations will occur in a later patch

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:58:02 -06:00
Grant Likely
b6caf2ad7c of: merge of_read_number() an of_read_ulong()
Merge common code between Microblaze and PowerPC

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:58:00 -06:00
Grant Likely
50436312f4 of: merge of_node_*_flag() and set_node_proc_entry()
Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:57:58 -06:00
Grant Likely
d45d94f672 of: merge struct boot_param_header from Microblaze and PowerPC
Merge common code for working with Flattened Device Tree data structure

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:57:55 -06:00
Grant Likely
d8678b5870 of: add common header for flattened device tree representation
Add a common header file for working with the flattened device tree
data structure and merge the shared data tags used by Microblaze and
PowerPC

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:57:53 -06:00
Grant Likely
6f19249283 of: merge struct device_node
Merge of common code duplicated between Sparc, PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:57:49 -06:00
Grant Likely
731581e6a6 of: merge phandle, ihandle and struct property
Merge of common code duplicated between Sparc, PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:57:46 -06:00
Grant Likely
9d24c888c7 of: Rework linux/of.h and asm/prom.h include ordering
In preparation to prune things out of the Sparc, PowerPC and Microblaze
asm/prom.h files, change the #include statements to ensure that
even if asm/prom.h is included first, linux/of.h gets to determine the
order in which files are processed.

This patch adds a #include <linux/of.h> to each of the prom.h files
*above* the multi-include protection macros to ensure that linux/of.h
can define things before prom.h gets processed.

At the end of the merge the cross dependencies between the files should
be gone and a sane #include scheme can be restored.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
2009-10-15 10:57:44 -06:00
Arnaldo Carvalho de Melo
a2e2725541 net: Introduce recvmmsg socket syscall
Meaning receive multiple messages, reducing the number of syscalls and
net stack entry/exit operations.

Next patches will introduce mechanisms where protocols that want to
optimize this operation will provide an unlocked_recvmsg operation.

This takes into account comments made by:

. Paul Moore: sock_recvmsg is called only for the first datagram,
  sock_recvmsg_nosec is used for the rest.

. Caitlin Bestler: recvmmsg now has a struct timespec timeout, that
  works in the same fashion as the ppoll one.

  If the underlying protocol returns a datagram with MSG_OOB set, this
  will make recvmmsg return right away with as many datagrams (+ the OOB
  one) it has received so far.

. Rémi Denis-Courmont & Steven Whitehouse: If we receive N < vlen
  datagrams and then recvmsg returns an error, recvmmsg will return
  the successfully received datagrams, store the error and return it
  in the next call.

This paves the way for a subsequent optimization, sk_prot->unlocked_recvmsg,
where we will be able to acquire the lock only at batch start and end, not at
every underlying recvmsg call.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-12 23:40:10 -07:00
Michal Simek
131e4e97bf microblaze: Clear sticky FSR register after saving it to func parametr
Previous patch d63678d607d0e37ec7abe5ceb545d7e8aab956a4 clear
it for noMMU kernel. This one do it for MMU.

Correct noMMU version

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-10-05 11:37:47 +02:00
Michal Simek
f1ae3f6918 microblaze: UMS is used only for MMU kernel
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-10-05 11:37:47 +02:00
Linus Torvalds
a6b49cb210 Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (24 commits)
  microblaze: Disable heartbeat/enable emaclite in defconfigs
  microblaze: Support simpleImage.dts make target
  microblaze: Fix _start symbol to physical address
  microblaze: Use LOAD_OFFSET macro to get correct LMA for all sections
  microblaze: Create the LOAD_OFFSET macro used to compute VMA vs LMA offsets
  microblaze: Copy ppc asm-compat.h for clean handling of constants in asm and C
  microblaze: Actually show KiB rather than pages in "Freeing initrd memory:"
  microblaze: Support ptrace syscall tracing.
  microblaze: Updated CPU version and FPGA family codes in PVR
  microblaze: Generate correct signal and siginfo for integer div-by-zero
  microblaze: Don't be noisy when userspace causes hardware exceptions
  microblaze: Remove ipc.h file which points to non-existing asm-generic file
  microblaze: Clear sticky FSR register after generating exception signals
  microblaze: Ensure CPU usermode is set on new userspace processes
  microblaze: Use correct kbuild variable KBUILD_CFLAGS
  microblaze: Save and restore msr in hw exception
  microblaze: Add architectural support for USB EHCI host controllers
  microblaze: Implement include/asm/syscall.h.
  microblaze: Improve checking mechanism for MSR instruction
  microblaze: Add checking mechanism for MSR instruction
  ...
2009-09-24 09:01:44 -07:00
Michal Simek
bfc8125858 microblaze: Disable heartbeat/enable emaclite in defconfigs
I need to disable heartbeat function because this features
breaks testing in Qemu.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-24 10:30:27 +02:00
Michal Simek
f05131cd7a microblaze: Support simpleImage.dts make target
Instead of remembering to specify DTB= on the make commandline, this commit
allows the much friendlier make simpleImage.<dts>
where <dts>.dts is expected to be found in arch/microblaze/boot/dts/
The resulting vmlinux, with the compiled DTS linked in, will be copied to
boot/simpleImage.<dts>

This mirrors the same functionality as on PowerPC,
albeit achieving it in a slightly different way.

+ strip simpleImage file
The size of output file is very similar to linux.bin.

vmlinux - full elf without fdt blob
simpleImage.<dtb name>.unstrip - full elf with fdt blob
simpleImage.<dtb name> - stripped elf with fdt blob

Add symlink to generic system.dts in platform folder

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-24 10:28:22 +02:00
Alexey Dobriyan
2bcd57ab61 headers: utsname.h redux
* remove asm/atomic.h inclusion from linux/utsname.h --
   not needed after kref conversion
 * remove linux/utsname.h inclusion from files which do not need it

NOTE: it looks like fs/binfmt_elf.c do not need utsname.h, however
due to some personality stuff it _is_ needed -- cowardly leave ELF-related
headers and files alone.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23 18:13:10 -07:00
Linus Torvalds
c37efa9325 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (30 commits)
  Use macros for .data.page_aligned section.
  Use macros for .bss.page_aligned section.
  Use new __init_task_data macro in arch init_task.c files.
  kbuild: Don't define ALIGN and ENTRY when preprocessing linker scripts.
  arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0
  kbuild: add static to prototypes
  kbuild: fail build if recordmcount.pl fails
  kbuild: set -fconserve-stack option for gcc 4.5
  kbuild: echo the record_mcount command
  gconfig: disable "typeahead find" search in treeviews
  kbuild: fix cc1 options check to ensure we do not use -fPIC when compiling
  checkincludes.pl: add option to remove duplicates in place
  markup_oops: use modinfo to avoid confusion with underscored module names
  checkincludes.pl: provide usage helper
  checkincludes.pl: close file as soon as we're done with it
  ctags: usability fix
  kernel hacking: move STRIP_ASM_SYMS from General
  gitignore usr/initramfs_data.cpio.bz2 and usr/initramfs_data.cpio.lzma
  kbuild: Check if linker supports the -X option
  kbuild: introduce ld-option
  ...

Fix trivial conflict in scripts/basic/fixdep.c
2009-09-23 15:37:02 -07:00
Geert Uytterhoeven
cc013a8890 arches: drop superfluous casts in nr_free_pages() callers
Commit 9617729941 ("Drop free_pages()")
modified nr_free_pages() to return 'unsigned long' instead of 'unsigned
int'.  This made the casts to 'unsigned long' in most callers superfluous,
so remove them.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <zankel@tensilica.com>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 07:17:34 -07:00
Michal Simek
cfa9a775b9 microblaze: Fix _start symbol to physical address
_start is setup to physical kernel start address.
This caused that when you load vmlinux (with MMU kernel)
via XMD program counter (pc) is setup correctly
and then you can write con and start kernel.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-22 10:11:08 +02:00
Michal Simek
a061dd5258 microblaze: Use LOAD_OFFSET macro to get correct LMA for all sections
Currently, vmlinux has LMA==VMA for all sections, which is wrong for MMU
kernels.  Previous patches in this series defined the LOAD_OFFSET constant,
now we make use of it in our link script.

Other minor changes in this patch:
	* brace/indenting cleanup of some sections
	* put __fdt_* symbols in their own section, and apply LOAD_OFFSET fixup

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-22 10:10:35 +02:00
John Williams
a1253977df microblaze: Create the LOAD_OFFSET macro used to compute VMA vs LMA offsets
LOAD_OFFSET is the offset between the physical load address and the kernel's
virtual address.  It will be used in the upcoming commit to vmlinux.ld.S to
make sure that the LMAs of sections in vmlinux are correct.

Signed-off-by: John Williams <john.williams@petalogix.com>
2009-09-22 10:10:06 +02:00
John Williams
1908676514 microblaze: Copy ppc asm-compat.h for clean handling of constants in asm and C
Provides the ASM_CONST macro for creating asm-safe constants.

No users yet, we'll be using it in upcoming page.h commit, for generating
the LOAD_OFFSET macro

Signed-off-by: John Williams <john.williams@petalogix.com>
2009-09-22 10:10:06 +02:00
Lennart Sorensen
d6f61770f9 microblaze: Actually show KiB rather than pages in "Freeing initrd memory:"
Fix "Freeing initrd memory:" message on microblaze to show kilobytes as
claimed rather than number of pages.

Signed-off-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-22 10:10:05 +02:00
Michal Simek
235754834b microblaze: Support ptrace syscall tracing.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-22 10:00:45 +02:00
John Williams
f97b4f7de4 microblaze: Updated CPU version and FPGA family codes in PVR
Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-09-22 10:00:45 +02:00
Michal Simek
23902d95c9 microblaze: Generate correct signal and siginfo for integer div-by-zero
Signed-off-by: John Williams <john.williams@petalogix.com>
2009-09-22 10:00:44 +02:00