Commit Graph

4764 Commits

Author SHA1 Message Date
Nathan Lynch 9115d13453 powerpc: Enable AT_BASE_PLATFORM aux vector
Stash the first platform string matched by identify_cpu() in
powerpc_base_platform, and supply that to the ELF loader for the value
of AT_BASE_PLATFORM.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-25 15:44:39 +10:00
Benjamin Herrenschmidt e9f76354ce Merge commit 'jk/jk-merge' 2008-07-25 15:35:10 +10:00
Benjamin Herrenschmidt c174aff956 Merge commit 'gcl/gcl-next' 2008-07-25 15:35:03 +10:00
Linus Torvalds ecc8b655b3 Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  nohz: adjust tick_nohz_stop_sched_tick() call of s390 as well
  nohz: prevent tick stop outside of the idle loop
2008-07-24 12:55:01 -07:00
Andrea Righi 27ac792ca0 PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures
On 32-bit architectures PAGE_ALIGN() truncates 64-bit values to the 32-bit
boundary. For example:

	u64 val = PAGE_ALIGN(size);

always returns a value < 4GB even if size is greater than 4GB.

The problem resides in PAGE_MASK definition (from include/asm-x86/page.h for
example):

#define PAGE_SHIFT      12
#define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK       (~(PAGE_SIZE-1))
...
#define PAGE_ALIGN(addr)       (((addr)+PAGE_SIZE-1)&PAGE_MASK)

The "~" is performed on a 32-bit value, so everything in "and" with
PAGE_MASK greater than 4GB will be truncated to the 32-bit boundary.
Using the ALIGN() macro seems to be the right way, because it uses
typeof(addr) for the mask.

Also move the PAGE_ALIGN() definitions out of include/asm-*/page.h in
include/linux/mm.h.

See also lkml discussion: http://lkml.org/lkml/2008/6/11/237

[akpm@linux-foundation.org: fix drivers/media/video/uvc/uvc_queue.c]
[akpm@linux-foundation.org: fix v850]
[akpm@linux-foundation.org: fix powerpc]
[akpm@linux-foundation.org: fix arm]
[akpm@linux-foundation.org: fix mips]
[akpm@linux-foundation.org: fix drivers/media/video/pvrusb2/pvrusb2-dvb.c]
[akpm@linux-foundation.org: fix drivers/mtd/maps/uclinux.c]
[akpm@linux-foundation.org: fix powerpc]
Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:21 -07:00
Jon Tollefson 0d9ea75443 powerpc: support multiple hugepage sizes
Instead of using the variable mmu_huge_psize to keep track of the huge
page size we use an array of MMU_PAGE_* values.  For each supported huge
page size we need to know the hugepte_shift value and have a
pgtable_cache.  The hstate or an mmu_huge_psizes index is passed to
functions so that they know which huge page size they should use.

The hugepage sizes 16M and 64K are setup(if available on the hardware) so
that they don't have to be set on the boot cmd line in order to use them.
The number of 16G pages have to be specified at boot-time though (e.g.
hugepagesz=16G hugepages=5).

Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:19 -07:00
Jon Tollefson 91224346aa powerpc: define support for 16G hugepages
The huge page size is defined for 16G pages.  If a hugepagesz of 16G is
specified at boot-time then it becomes the huge page size instead of the
default 16M.

The change in pgtable-64K.h is to the macro pte_iterate_hashed_subpages to
make the increment to va (the 1 being shifted) be a long so that it is not
shifted to 0.  Otherwise it would create an infinite loop when the shift
value is for a 16G page (when base page size is 64K).

Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:19 -07:00
Jon Tollefson 658013e93e powerpc: scan device tree for gigantic pages
The 16G huge pages have to be reserved in the HMC prior to boot.  The
location of the pages are placed in the device tree.  This patch adds code
to scan the device tree during very early boot and save these page
locations until hugetlbfs is ready for them.

Acked-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:19 -07:00
Jon Tollefson ec4b2c0c83 powerpc: function to allocate gigantic hugepages
The 16G page locations have been saved during early boot in an array.  The
alloc_bootmem_huge_page() function adds a page from here to the
huge_boot_pages list.

Acked-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Jon Tollefson <kniht@linux.vnet.ibm.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:19 -07:00
Andi Kleen ceb8687961 hugetlb: introduce pud_huge
Straight forward extensions for huge pages located in the PUD instead of
PMDs.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:18 -07:00
Andi Kleen a551643895 hugetlb: modular state for hugetlb page size
The goal of this patchset is to support multiple hugetlb page sizes.  This
is achieved by introducing a new struct hstate structure, which
encapsulates the important hugetlb state and constants (eg.  huge page
size, number of huge pages currently allocated, etc).

The hstate structure is then passed around the code which requires these
fields, they will do the right thing regardless of the exact hstate they
are operating on.

This patch adds the hstate structure, with a single global instance of it
(default_hstate), and does the basic work of converting hugetlb to use the
hstate.

Future patches will add more hstate structures to allow for different
hugetlbfs mounts to have different page sizes.

[akpm@linux-foundation.org: coding-style fixes]
Acked-by: Adam Litke <agl@us.ibm.com>
Acked-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:17 -07:00
Jan Beulich 42b7772812 mm: remove double indirection on tlb parameter to free_pgd_range() & Co
The double indirection here is not needed anywhere and hence (at least)
confusing.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:15 -07:00
Benjamin Herrenschmidt a352894d07 spufs: use new vm_ops->access to allow local state access from gdb
This uses the new vm_ops->access to allow gdb to access the SPU local
store.  We currently prevent access to problem state registers, this can
be done later if really needed but it's safer not to.

[akpm@linux-foundation.org: fix typo]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:15 -07:00
Benjamin Herrenschmidt a1f242ff46 powerpc ioremap_prot
This adds ioremap_prot and pte_pgprot() so that one can extract protection
bits from a PTE and use them to ioremap_prot() (in order to support ptrace
of VM_IO | VM_PFNMAP as per Rik's patch).

This moves a couple of flag checks around in the ioremap implementations
of arch/powerpc.  There's a side effect of allowing non-cacheable and
non-guarded mappings on ppc32 which before would always have _PAGE_GUARDED
set whenever _PAGE_NO_CACHE is.

(standard ioremap will still set _PAGE_GUARDED, but ioremap_prot will be
capable of setting such a non guarded mapping).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:15 -07:00
Johannes Weiner b61bfa3c46 mm: move bootmem descriptors definition to a single place
There are a lot of places that define either a single bootmem descriptor or an
array of them.  Use only one central array with MAX_NUMNODES items instead.

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:14 -07:00
David Brownell 9483a578df add HAVE_CLK to Kconfig, for driver dependencies
Flag platforms as HAVE_CLK (or not) in Kconfig, based on whether they
support <linux/clk.h> calls, so that otherwise portable drivers which need
those calls can list that dependency.

Something like this is a prerequisite for merging the musb_hdrc driver,
currently used on platforms including Davinci, OMAP2430, OMAP3xx ...  and
the discrete TUSB6010 chip, which doesn't have a natural platform
dependency.  (Used with OMAP 2420 in current Nokia N8x0 tablets.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.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@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24 10:47:13 -07:00
Andre Detsch ad1ede1277 powerpc/spufs: better placement of spu affinity reference context
This patch adjusts the placement of a reference context from
a spu affinity chain. The reference context can now be placed
only on nodes that have enough spus not intended to be used by
another gang (already running on the node).

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-24 11:01:54 +10:00
Andre Detsch 0855b54322 powerpc/spufs: fix aff_mutex and cbe_spu_info[n].list_mutex deadlock
Currenlt,, it is possible to lock aff_mutex and
cbe_spu_info[n].list_mutex in different orders, allowing a deadlock to
occur. With this change, aff_mutex is not taken within a list_mutex
critical section anymore.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-24 10:57:26 +10:00
Jason Wessel 17ce452f7e kgdb, powerpc: arch specific powerpc kgdb support
This patch removes the old kgdb reminants from ARCH=powerpc and
implements the new style arch specific stub for the common kgdb core
interface.

It is possible to have xmon and kgdb in the same kernel, but you
cannot use both at the same time because there is only one set of
debug hooks.

The arch specific kgdb implementation saves the previous state of the
debug hooks and restores them if you unconfigure the kgdb I/O driver.
Kgdb should have no impact on a kernel that has no kgdb I/O driver
configured.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2008-07-23 11:30:15 -05:00
Milton Miller 9bcab8405c powerpc/spufs: correct kcalloc usage
kcalloc is supposed to be called with the count as its first argument and
the element size as the second.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-23 09:37:16 +10:00
Linus Torvalds 06b8147c5d Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (49 commits)
  powerpc: Fix build bug with binutils < 2.18 and GCC < 4.2
  powerpc/eeh: Don't panic when EEH_MAX_FAILS is exceeded
  fbdev: Teaches offb about palette on radeon r5xx/r6xx
  powerpc/cell/edac: Log a syndrome code in case of correctable error
  powerpc/cell: Add DMA_ATTR_WEAK_ORDERING dma attribute and use in Cell IOMMU code
  powerpc: Indicate which oprofile counters to use while in compat mode
  powerpc/boot: Change spaces to tabs
  powerpc: Remove duplicate 6xx option in Kconfig
  powerpc: Use PPC_LONG and PPC_LONG_ALIGN in lib/string.S
  powerpc: Use PPC_LONG_ALIGN in uaccess.h
  powerpc: Add a #define for aligning to a long-sized boundary
  powerpc: Fix OF parsing of 64 bits PCI addresses
  powerpc: Use WARN_ON(1) instead of __WARN()
  powerpc: Fix support for latencytop
  powerpc/ps3: Update ps3_defconfig
  powerpc/ps3: Add a sub-match id to ps3_system_bus
  powerpc: Add a 6xx defconfig
  powerpc/dma: Use the struct dma_attrs in iommu code
  powerpc/cell: Add support for power button of future IBM cell blades
  powerpc/cell: Cleanup sysreset_hack for IBM cell blades
  ...
2008-07-22 13:16:01 -07:00
Grant Likely 6d5509babc powerpc/mpc5200: Make mpc5200 GPIO driver select the GENERIC_GPIO config
CONFIG_GENERIC_GPIO is needed for the gpio driver to work.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-22 01:13:41 -06:00
Jon Smirl 78f56bd3d2 powerpc/mpc5200: Remove fsl-soc.c from mpc5200 build, it is not needed.
Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-22 01:13:16 -06:00
Benjamin Herrenschmidt 8725f25acc Merge commit 'origin/master'
Manually fixed up:

	drivers/net/fs_enet/fs_enet-main.c
2008-07-22 17:12:37 +10:00
Andi Kleen 4a0b2b4dbe sysdev: Pass the attribute to the low level sysdev show/store function
This allow to dynamically generate attributes and share show/store
functions between attributes. Right now most attributes are generated
by special macros and lots of duplicated code. With the attribute
passed it's instead possible to attach some data to the attribute
and then use that in shared low level functions to do different things.

I need this for the dynamically generated bank attributes in the x86
machine check code, but it'll allow some further cleanups.

I converted all users in tree to the new show/store prototype. It's a single
huge patch to avoid unbisectable sections.

Runtime tested: x86-32, x86-64
Compiled only: ia64, powerpc
Not compile tested/only grep converted: sh, arm, avr32

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:55:02 -07:00
Greg Kroah-Hartman fc3a8828b1 driver core: fix a lot of printk usages of bus_id
We have the dev_printk() variants for this kind of thing, use them
instead of directly trying to access the bus_id field of struct device.

This is done in order to remove bus_id entirely.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:53 -07:00
Segher Boessenkool c69cccc95f powerpc: Fix build bug with binutils < 2.18 and GCC < 4.2
binutils < 2.18 has a bug that makes it misbehave when taking an
ELF file with all segments at load address 0 as input.  This
happens when running "strip" on vmlinux, because of the AT() magic
in this linker script.  People using GCC >= 4.2 won't run into
this problem, because the "build-id" support will put some data
into the "notes" segment (at a non-zero load address).

To work around this, we force some data into both the "dummy"
segment and the kernel segment, so the dummy segment will get a
non-zero load address.  It's not enough to always create the
"notes" segment, since if nothing gets assigned to it, its load
address will be zero.

Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Tested-By: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:37 +10:00
Mike Mason f36c5227cd powerpc/eeh: Don't panic when EEH_MAX_FAILS is exceeded
This patch changes the EEH_MAX_FAILS action from panic to printing an
error message.  Panicking under under this condition is too harsh.
Although performance will be affected and the device may not recover,
the system is still running, which at the very least should allow for a
more graceful shutdown. The patch also removes the msleep() within a
spinlock, which can lead to a deadlock and is not recommended.

Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Acked-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:37 +10:00
Mark Nelson 1ed6af7344 powerpc/cell: Add DMA_ATTR_WEAK_ORDERING dma attribute and use in Cell IOMMU code
Introduce a new dma attriblue DMA_ATTR_WEAK_ORDERING to use weak ordering
on DMA mappings in the Cell processor. Add the code to the Cell's IOMMU
implementation to use this code.

Dynamic mappings can be weakly or strongly ordered on an individual basis
but the fixed mapping has to be either completely strong or completely weak.
This is currently decided by a kernel boot option (pass iommu_fixed=weak
for a weakly ordered fixed linear mapping, strongly ordered is the default).

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:36 +10:00
Torez Smith 79e25bac12 powerpc: Indicate which oprofile counters to use while in compat mode
While running on a system with new hardware and a kernel where the
cpu_specs[] table does not recognize the new hardware, the identify_cpu()
routine will select the default case as it searches through cpu_specs[]
in an attempt to match the real PVR. Once the default case is selected,
non of the oprofile counters and/or fields have been set up or defined.

When identify_cpu() is called once more with the logical PVR, some of
the cpu specific fields are replaced with the exception of the oprofile
related ones. However, in the case where we have actually taken the
default case while searching for the real PVR, we need to tell
oprofile that we are now running in compatibility mode so it can pick up
the correct counters. We do this by setting the oprofile_cpu_type field
to be that taken from the cpu_specs[] for the cpu we are now emulating.

This change will detect that we are now altering the real PVR and determine
if we also need to update the oprofile_cpu_type field.

Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:36 +10:00
Adrian Bunk 542a3a3bc9 powerpc/boot: Change spaces to tabs
For C code spaces versus tabs is just a religious issue,
but for Makefiles it actually matters.

This patch fixes he following errors:
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/powerpc/boot/Makefile:166: *** missing separator.  Stop.
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/powerpc/boot/Makefile:171: *** missing separator.  Stop.

Since this was inside an ifdef DTC_GENPARSER it was not a problem unless
someone wanted to regenerate the shipped generated files.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:35 +10:00
Adrian Bunk bf312ccc04 powerpc: Remove duplicate 6xx option in Kconfig
The real option is above in the same Kconfig file.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:35 +10:00
Michael Ellerman 76bfdcf71c powerpc: Use PPC_LONG and PPC_LONG_ALIGN in lib/string.S
Replace ifdef clutter with the PPC_LONG and PPC_LONG_ALIGN macros
for readability.

No change to the generated code.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:35 +10:00
Benjamin Herrenschmidt 67260ac9a3 powerpc: Fix OF parsing of 64 bits PCI addresses
The OF parsing code for PCI addresses isn't always treating properly
the address space indication 0b11 (ie. 0x3) as meaning 64 bits
memory space.

This means that it fails to parse addresses for PCI BARs that have
this encoding set by the firmware, which happens on some SLOF
versions and breaks offb palette handling on Powerstation.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
2008-07-22 10:39:34 +10:00
Michael Ellerman 1856c02040 powerpc: Use WARN_ON(1) instead of __WARN()
__WARN() is not defined for all configs, use WARN_ON(1) instead.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:34 +10:00
Arnd Bergmann 6fdc9f5076 powerpc: Fix support for latencytop
We need to pass the kernel stack pointer instead of the user space
stack pointer in save_stack_trace_tsk().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:33 +10:00
Geoff Levand 72e82dcd1f powerpc/ps3: Update ps3_defconfig
Update ps3_defconfig.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:33 +10:00
Masakazu Mokuno 059e4938f8 powerpc/ps3: Add a sub-match id to ps3_system_bus
Add sub match id for ps3 system bus so that two different system bus
devices can be connected to a shared device.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:33 +10:00
Kumar Gala 6e5f153783 powerpc: Add a 6xx defconfig
This is a defconfig from Dave Jones and should be similar (if not
identical) to the fedora ppc32 defconfig.  The intent is to cover all
cache coherent 6xx based chips and platforms as reasonable.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:32 +10:00
Mark Nelson 4f3dd8a062 powerpc/dma: Use the struct dma_attrs in iommu code
Update iommu_alloc() to take the struct dma_attrs and pass them on to
tce_build(). This change propagates down to the tce_build functions of
all the platforms.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:32 +10:00
Christian Krafft 4795b7801b powerpc/cell: Add support for power button of future IBM cell blades
This patch adds support for the power button on future IBM cell blades.
It actually doesn't shut down the machine. Instead it exposes an
input device /dev/input/event0 to userspace which sends KEY_POWER
if power button has been pressed.
haldaemon actually recognizes the button, so a plattform independent acpid
replacement should handle it correctly.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:32 +10:00
Christian Krafft 70694a8bab powerpc/cell: Cleanup sysreset_hack for IBM cell blades
This patch adds a config option for the sysreset_hack used for
IBM Cell blades. The code is moves from pervasive.c into ras.c and
gets it's own init method.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:31 +10:00
Christian Krafft 880e710580 powerpc/cell/cpufreq: Add spu aware cpufreq governor
This patch adds a cpufreq governor that takes the number of running spus
into account. It's very similar to the ondemand governor, but not as complex.
Instead of hacking spu load into the ondemand governor it might be easier to
have cpufreq accepting multiple governors per cpu in future.
Don't know if this is the right way, but it would keep the governors simple.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:31 +10:00
Maxim Shchetynin 8204cba7fa powerpc/axonram: Enable partitioning of the Axons DDR2 DIMMs
DDR2 memory DIMMs on the Axon could be accessed only as one partition
when using file system drivers which are using the direct_access() method.
This patch enables for such file system drivers to access Axon's DDR2 memory
even if it is splitted in several partitions.

Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:31 +10:00
Maxim Shchetynin 9a23409b69 powerpc/axonram: Use only one block device major number
Axonram module registers one block device for each DDR2 DIMM found
on a system. This means that each DDR2 DIMM becomes its own block device
major number. This patch lets axonram module to register the only one
block device for all DDR2 DIMMs which also spares kernel resources.

Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-22 10:39:31 +10:00
Marcelo Tosatti 34d4cb8fca KVM: MMU: nuke shadowed pgtable pages and ptes on memslot destruction
Flush the shadow mmu before removing regions to avoid stale entries.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20 12:42:40 +03:00
Laurent Vivier 588968b6b7 KVM: Add coalesced MMIO support (powerpc part)
This patch enables coalesced MMIO for powerpc architecture.
It defines KVM_MMIO_PAGE_OFFSET and KVM_CAP_COALESCED_MMIO.
It enables the compilation of coalesced_mmio.c.

Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20 12:42:31 +03:00
Avi Kivity 7cc8883074 KVM: Remove decache_vcpus_on_cpu() and related callbacks
Obsoleted by the vmx-specific per-cpu list.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20 12:42:25 +03:00
Ingo Molnar 9b610fda0d Merge branch 'linus' into timers/nohz 2008-07-18 19:53:16 +02:00
Thomas Gleixner b8f8c3cf0a nohz: prevent tick stop outside of the idle loop
Jack Ren and Eric Miao tracked down the following long standing
problem in the NOHZ code:

	scheduler switch to idle task
	enable interrupts

Window starts here

	----> interrupt happens (does not set NEED_RESCHED)
	      	irq_exit() stops the tick

	----> interrupt happens (does set NEED_RESCHED)

	return from schedule()
	
	cpu_idle(): preempt_disable();

Window ends here

The interrupts can happen at any point inside the race window. The
first interrupt stops the tick, the second one causes the scheduler to
rerun and switch away from idle again and we end up with the tick
disabled.

The fact that it needs two interrupts where the first one does not set
NEED_RESCHED and the second one does made the bug obscure and extremly
hard to reproduce and analyse. Kudos to Jack and Eric.

Solution: Limit the NOHZ functionality to the idle loop to make sure
that we can not run into such a situation ever again.

cpu_idle()
{
	preempt_disable();

	while(1) {
		 tick_nohz_stop_sched_tick(1); <- tell NOHZ code that we
		 			          are in the idle loop

		 while (!need_resched())
		       halt();

		 tick_nohz_restart_sched_tick(); <- disables NOHZ mode
		 preempt_enable_no_resched();
		 schedule();
		 preempt_disable();
	}
}

In hindsight we should have done this forever, but ... 

/me grabs a large brown paperbag.

Debugged-by: Jack Ren <jack.ren@marvell.com>, 
Debugged-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-18 18:10:28 +02:00
Timur Tabi ac8a101480 powerpc: fix ALSA options in Freescale 85xx and 86xx defconfigs
The defconfigs for Freescale 85xx and 86xx SOCs had bad choices for some
audio related options.  In particular, OSS emulation should be enabled,
and the old ALSA API should be disabled.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:59:48 -05:00
Kumar Gala 108443cb0c Revert "powerpc/ep8248e: Fix compile problem if !CONFIG_FS_ENET"
This reverts commit e3621ee633.

This was not the proper fix.  As Scott Wood said CONFIG_FS_ENET has nothing
to do with the issue.  The proper fix is to select PHYLIB for this board.
2008-07-16 17:59:47 -05:00
Kumar Gala ff21f23648 powerpc/ep8248e: Unconditionally select PHYLIB for mdio_bitbang
Its possible to build the phylib as a module, however this breaks the
board code because alloc_mdio_bitbang and mdiobus_register are not
available if we build as a module.  These are needed by the board code
since it implements the low level mdio bitbang ops.

So we unconditionally select PHYLIB to ensure its built into the kernel
if we are building in EP8248E support.

Long term we should look at moving the mdio_ops into its own file so it
can be built as a module.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:59:46 -05:00
Kumar Gala 0332f000cd powerpc/fsl: Minor TLBSYNC cleanup for FSL Book-E
Use the TLBSYNC macro defined in ppc_asm.h rather than our own ifdefs.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:52 -05:00
Kumar Gala 6cfd8990e2 powerpc: rework FSL Book-E PTE access and TLB miss
This converts the FSL Book-E PTE access and TLB miss handling to match
with the recent changes to 44x that introduce support for non-atomic PTE
operations in pgtable-ppc32.h and removes write back to the PTE from
the TLB miss handlers. In addition, the DSI interrupt code no longer
tries to fixup write permission, this is left to generic code, and
_PAGE_HWWRITE is gone.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:51 -05:00
Kumar Gala 2d07db33d1 powerpc: Remove Kconfig PPC_CPM_NEW_BINDING
With arch/ppc gone and all in kernel users of CONFIG_PPC_CPM_NEW_BINDING
fixed up we dont have need for the Kconfig option anymore.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:50 -05:00
Scott Wood d87eb12785 gianfar: Add magic packet and suspend/resume support.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:47 -05:00
Andy Fleming 7e1cc9c55a powerpc: Fix a bunch of sparse warnings in the qe_lib
Mostly having to do with not marking things __iomem.  And some failure
to use appropriate accessors to read MMIO regs.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:45 -05:00
Andy Fleming 4cd7e1cbd4 powerpc: Add support for multiple gfar mdio interfaces
The old code assumed there was only one, but the 8572 actually has 3.

Also, our usual id, 0xe0024520, gets resolved to -1 somewhere, and this was
preventing the multiple buses from having different ids.  So we only keep
the low 20 bits, which have the interesting info, anyway.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:44 -05:00
Anton Vorontsov a47fda9307 powerpc/86xx: mpc8610_hpcd - add support for ULI RTC
The ULI "Super South Bridge" contains ISA bridge to the legacy
devices, such as Super IO mouse/keyboard/floppy disk controllers,
parallel port, i8259 interrupt controller and so on.

i8259 is disabled on the MPC8610HPCD, and other peripherals are not
traced out. So we use only RTC.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:43 -05:00
Anton Vorontsov 52ddd1cdc9 powerpc/85xx/86xx: some refactoring for fsl_uli1575 code
- Get rid of uses_fsl_uli_m1575, it does not scale for all cases.
  Instead, let's explicitly use machine_is() for each fixup.
- Factor out MPC8610HPCD quirks to fsl_uli1575, and protect them with
  machine_is(). One step closer to multiplatform kernels.
- Actually use fsl_uli1575 on MPC8610HPCD, so RTC quirk will be applied.
- RTC quirk applies to all boards though, so no machine_is() checks.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:42 -05:00
Anton Vorontsov 00c5372d37 powerpc/fsl_uli1575: fix RTC quirk to work on MPC8572DS and MPC8610HPCD
This patch fixes RTC on MPC8572DS boards: dummy read helps only when
reading at the end of the bridge's memory (i.e. outside of behind the
bridge devices' assigned regions).

With this change the quirk also makes RTC work on MPC8610HPCD, so it's
unlikely that this will break MPC8641HPCN or MPC8544DS boards.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:41 -05:00
Anton Vorontsov 69ad7e73de powerpc/fsl_soc: gianfar: don't probe disabled devices
Freescale ships MPC8315E-RDB boards in two variants:

1. With TSEC1 ethernet support and USB UTMI PHY;
2. Without TSEC1 support, but with USB ULPI PHY in addition.

For the second case U-Boot will add status = "disabled"; property
into the TSEC1 node, so Linux should not try to probe it.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:38 -05:00
Anton Vorontsov c0a2015965 powerpc/83xx: fix ULPI setup for MPC8315 processors
We must not use MPC831X_SICR[HL]_* definitions for the MPC8315 processors,
because SICR USB bits locations are not compatible with MPC8313.

This patch fixes ULPI workability on MPC8315E-RDB boards.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:37 -05:00
John Rigby 76fe1ffce9 powerpc: Move mpc83xx_add_bridge to fsl_pci.c
This allows other platforms with the same pci block like MPC5121 to use it.

Signed-off-by: John Rigby <jrigby@freescale.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:35 -05:00
John Rigby b500563b22 powerpc: pci config cleanup
Choosing PCI or not at config time is allowed on some
platforms via an if expression in arch/powerpc/Kconfig.
To add a new platform with PCI support selectable at
config time, you must change the if expression.  This
patch makes this easier by changing:
    bool "PCI support" if <long expression>
to
    bool "PCI support" if PPC_PCI_CHOICE
and adding select PPC_PCI_CHOICE to all the config nodes that
were previously in the PCI if expression.

Platforms with unconditional PCI support continue to
just select PCI in their config nodes.

Signed-off-by: John Rigby <jrigby@freescale.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:34 -05:00
Paul Gortmaker 36aa7965d8 powerpc/mpc7448: add alias list to DTS, clean out old chosen node
The mpc7448hpc2 board doesn't have an alias block like
most of the other modern eval boards have.  We need this
block in order to have u-boot be able to make use of the
CONFIG_OF_STDOUT_VIA_ALIAS (vs. having a hard coded node)
in the future.

Also remove the old, redundant chosen node.  Of all the modern
Freescale eval boards (incl. 83xx, 85xx, 86xx) this is the only
one which still has it.  Its presence also breaks with some older
versions of u-boot, like 1.3.1 -- which try and insert a
second chosen node.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:33 -05:00
Scott Wood 574366128d powerpc/mpc8313erdb: Add power management to the device tree.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:31 -05:00
Scott Wood d49747bdfb powerpc/mpc83xx: Power Management support
Basic PM support for 83xx.  Standby is implemented as sleep.
Suspend-to-RAM is implemented as "deep sleep" (with the processor
turned off) on 831x.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-16 17:57:30 -05:00
Kumar Gala e3621ee633 powerpc/ep8248e: Fix compile problem if !CONFIG_FS_ENET
If we don't enable FS_ENET we get build issues:

arch/powerpc/platforms/built-in.o: In function `ep8248e_mdio_probe':
arch/powerpc/platforms/82xx/ep8248e.c:129: undefined reference to `alloc_mdio_bitbang'
arch/powerpc/platforms/82xx/ep8248e.c:143: undefined reference to `mdiobus_register'

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-16 11:43:48 -07:00
Benjamin Herrenschmidt 84c3d4aaec Merge commit 'origin/master'
Manual merge of:

	arch/powerpc/Kconfig
	arch/powerpc/kernel/stacktrace.c
	arch/powerpc/mm/slice.c
	arch/ppc/kernel/smp.c
2008-07-16 11:07:59 +10:00
Ingo Molnar 1a781a777b Merge branch 'generic-ipi' into generic-ipi-for-linus
Conflicts:

	arch/powerpc/Kconfig
	arch/s390/kernel/time.c
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/cpu/perfctr-watchdog.c
	arch/x86/kernel/i8259_64.c
	arch/x86/kernel/ldt.c
	arch/x86/kernel/nmi_64.c
	arch/x86/kernel/smpboot.c
	arch/x86/xen/smp.c
	include/asm-x86/hw_irq_32.h
	include/asm-x86/hw_irq_64.h
	include/asm-x86/mach-default/irq_vectors.h
	include/asm-x86/mach-voyager/irq_vectors.h
	include/asm-x86/smp.h
	kernel/Makefile

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-15 21:55:59 +02:00
Linus Torvalds af5329cdf5 Merge branch 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  generic-ipi: powerpc/generic-ipi tree build failure
  stacktrace: fix build failure on sparc64
  stacktrace: export save_stack_trace[_tsk]
  stacktrace: fix modular build, export print_stack_trace and save_stack_trace
  backtrace: replace timer with tasklet + completions
  stacktrace: add saved stack traces to backtrace self-test
  stacktrace: print_stack_trace() cleanup
  debugging: make stacktrace independent from DEBUG_KERNEL
  stacktrace: don't crash on invalid stack trace structs
2008-07-15 10:31:35 -07:00
Benjamin Herrenschmidt 43d2548bb2 Merge commit '85082fd7cbe3173198aac0eb5e85ab1edcc6352c' into test-build
Manual fixup of:

	arch/powerpc/Kconfig
2008-07-15 15:44:51 +10:00
Takashi Iwai 7ff86b0317 powerpc: Fix a build problem on ppc32 with new DMA_ATTRs
The new dma_attrs support must only be enabled for 64 bits as it's not
been implemented for 32 bits yet.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 15:38:48 +10:00
Sonny Rao b6f6b98a4e powerpc: Don't spin on sync instruction at boot time
Push the sync below the secondary smp init hold loop and comment its purpose.
This should speed up boot by reducing global traffic during the single-threaded
portion of boot.

Signed-off-by: Sonny Rao <sonnyrao@us.ibm.com>
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:29:28 +10:00
Michael Neuling cd6f37be7f powerpc: Add VSX load/store alignment exception handler
VSX loads and stores will take an alignment exception when the address
is not on a 4 byte boundary.

This add support for these alignment exceptions and will emulate the
requested load or store.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:29:25 +10:00
Michael Neuling 7c29217096 powerpc: fix giveup_vsx to save registers correctly
giveup_vsx didn't save the FPU and VMX regsiters.  Change it to be
like giveup_fpr/altivec which save these registers.

Also update call sites where FPU and VMX are already saved to use the
original giveup_vsx (renamed to __giveup_vsx).

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:29:23 +10:00
Arnd Bergmann 01f4b8b8b8 powerpc: support for latencytop
Implement save_stack_trace_tsk on powerpc, so that we can run with
latencytop.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:29:15 +10:00
Dave Kleikamp 443dcac4d8 powerpc: Remove unnecessary condition when sanity-checking WIMG bits
It is okay for both _PAGE_GUARDED and _PAGE_COHERENT (G and M) to be set
in the same pte.  In fact, even if that were not the case, there doesn't
seem to be any place where G is set without also setting I (_PAGE_NO_CACHE),
so the test for I is sufficient as a condition to clear _PAGE_COHERENT
when filling the hash table.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:24:59 +10:00
Nathan Lynch 0f47331475 powerpc: Add PPC_FEATURE_PSERIES_PERFMON_COMPAT
Background from Maynard Johnson:
As of POWER6, a set of 32 common events is defined that must be
supported on all future POWER processors.  The main impetus for this
compat set is the need to support partition migration, especially from
processor P(n) to processor P(n+1), where performance software that's
running in the new partition may not be knowledgeable about processor
P(n+1).  If a performance tool determines it does not support the
physical processor, but is told (via the
PPC_FEATURE_PSERIES_PERFMON_COMPAT bit) that the processor supports
the notion of the PMU compat set, then the performance tool can
surface just those events to the user of the tool.

PPC_FEATURE_PSERIES_PERFMON_COMPAT indicates that the PMU supports at
least this basic subset of events which is compatible across POWER
processor lines.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:24:57 +10:00
Sonny Rao fe9e8d5377 powerpc: Add driver for Barrier Synchronization Register
Adds a character driver for BSR support on IBM POWER systems including
Power5 and Power6.  The BSR is an optional processor facility not currently
implemented by any other processors.  It's primary purpose is fast large SMP
synchronization.  More details on the BSR are in comments to the code which
follows.  This patch adds BSR driver to pseries_defconfig.

Signed-off-by: Sonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-15 12:24:55 +10:00
Benjamin Herrenschmidt 5b0504c0d7 Merge commit 'gcl/gcl-next' 2008-07-15 11:55:27 +10:00
Benjamin Herrenschmidt 930074b6b9 Merge commit 'jwb/jwb-next' 2008-07-15 11:54:57 +10:00
Linus Torvalds d18bb9a548 Merge branch 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  move BUG_TABLE into RODATA
2008-07-14 15:28:10 -07:00
Stephen Rothwell 7798ed0f57 generic-ipi: powerpc/generic-ipi tree build failure
Today's linux-next build (powerpc allmodconfig) failed like this:

ERROR: ".save_stack_trace" [tests/backtracetest.ko] undefined!

But save_stack_trace is exported in arch/powerpc/kernel/stacktrace.c

I couldn't figure it out until I noticed these earlier warnings:

arch/powerpc/kernel/stacktrace.c:47: warning: data definition has no type or storage class
arch/powerpc/kernel/stacktrace.c:47: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL'
arch/powerpc/kernel/stacktrace.c:47: warning: parameter names (without types) in function declaration

I applied the patch below.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: <linuxppc-dev@ozlabs.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-14 17:54:22 +02:00
Kim Phillips 3fd44736db powerpc/fsl: update crypto node definition and device tree instances
delete obsolete device-type property, delete model property
(use compatible property instead), prepend "fsl," to Freescale
specific properties. Add nodes to device trees that are missing them,
and fix broken property values in other trees.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:47 -05:00
Jason Jin b93eeba49e powerpc/85xx: Minor fixes for 85xxds and 8536ds board.
Remove the "uninitialized use" compile warning and avoid potential
runtime issue.

Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:44 -05:00
Kumar Gala d8267c1a36 powerpc: Add 82xx/83xx/86xx to 6xx Multiplatform
There isn't any reason at this point that we can't build 82xx, 83xx & 86xx
support in with the other 6xx based boards.  Twiddle the Kconfigs to allow
this.

This allows us to remove the machine type selection for related to 6xx.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:44 -05:00
Dave Jiang a64887eb0a powerpc/85xx: publish of device for cds platforms
Publish the devices listed in dts under SOC as of_device for 85xx_cds
platform. The devices are needed by the 85xx EDAC driver.

Signed-off-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:43 -05:00
Kumar Gala ddb107e98b powerpc/booke: don't reinitialize time base
For some reason long ago I decided that we should zero out the time base
when we calibrate the decrementer.  The problem is that this can be
harmful in SMP systems where the firmware has already synchronized the
time bases on the various cores.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:42 -05:00
Kumar Gala 98384c6cdd powerpc/86xx: Refactor pic init
Moved the pic initialization into its own common file and out of the board
code.  Also fixed the OF reference counting on the mpic node.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:41 -05:00
Jochen Friedrich a5d28c8e64 powerpc/CPM: Add i2c pins to dts and board setup
Initialize I2C pins on boards with CPM1/CPM2 controllers and document the
i2c bus in booting-without-of.

The boards don't have any I2C chips connected to the I2C bus, so unless
some external chips are connected to the boards, this code is just an
example of setting everything else up.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:39 -05:00
Kumar Gala 2f3804edf9 powerpc/85xx: Add support for MPC8536DS
Add support for the MPC8536 process and MPC8536DS reference board.  The
MPC8536 is an e500v2 based SoC which eTSEC, USB, SATA, PCI, and PCIe.

The USB and SATA IP blocks are similiar to those on the PQ2 Pro SoCs and
thus use the same drivers.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:37 -05:00
Kumar Gala a712b65cd0 powerpc/85xx: minor fixes for MPC85xx DS board port
These issues were reported by Stephen Rothwell for another 85xx board
port and pointed out by Chen Gong as issues in the DS port.

* mpic OF node reference counting was off
* of_device_id struct should be marked as __initdata

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:36 -05:00
Nye Liu 5e82eb3339 powerpc/CPM: Minor cosmetic changes to udbg_putc
udbg_putc is a *function pointer* that is initialized during
udbg_init_cpm. It might not be initialized properly when called from
udbg_putc_cpm(), so (recursively) call udbg_putc_cpm() directly.

Signed-off-by: Nye Liu <nyet@mrv.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:35 -05:00
Wolfgang Grandegger a3083220c0 powerpc/85xx: TQM8548: add missing support for RTC and LM75
It adds the missing RTC node to tqm8548.dts and enables support for
I2C, DS1307 and LM75 in the default configuration.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:34 -05:00
Anton Vorontsov deabeabf0b powerpc/86xx: mpc8610_hpcd: fix interrupt trigger type for ULi IDE
i8259 PIC is disabled on MPC8610HPCD, and ULi IDE is configured to use
PCI sideband interrupt that is specified in the device tree.

Current HPCD's device tree specify that IDE interrupt is low to high
sensitive, but in practice ULi IDE throws active-high interrupts (not
active-low as all normal PCI devices).

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:32 -05:00
Rune Torgersen 6c11609912 powerpc: Fix pq2fads irq handling with PREEMPT_RT
Fix interrupt threading issue on pq2fads when running with CONFIG_PREEMPT_RT

Signed-off-by: Rune Torgersen <runet@innovsys.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:30 -05:00
Kumar Gala 0fe9b1ea60 powerpc/85xx: Fix KSI8560 .dts
Rename MPIC label to mpic to match all other 85xx .dts and to fix compile
issue introduced by addition of the DMA node.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-07-14 07:55:29 -05:00
Benjamin Herrenschmidt 11c2d8174e Merge commit 'origin/HEAD' into test-merge
Manual fixup of include/asm-powerpc/pgtable-ppc64.h
2008-07-14 14:29:49 +10:00
John Rigby 1879f711d8 powerpc/mpc5121: Add support for CPLD on MPC5121ADS board
Add a interrupt host for the interrupt controller in the mpc5121ads cpld.
PCI interrupts are 0-7 the rest are 8-15 Touchscreen pendown irq is
hardwired to irq1 All other irqs are chained to irq0

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:55 -06:00
John Rigby fb1803224e powerpc/mpc5121: Add generic board support for MPC5121 platforms
Move shared code from mpc5121_ads.c to new file mpc512x_shared.c
- mpc512x_find_ips_freq -> unchanged
- contents of mpc5121_ads_init_IRQ -> mpc512x_init_IRQ
  - looking for fsl,mpc5121-ipic instead of fsl,ipic
- mpc5121_ads_declare_of_platform_devices -> mpc5121_declare_of_platform_devices
  - and use compatible for lookup instead of node name

Add new generic board setup mpc5121_generic.c

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:54 -06:00
John Rigby 137e95906e powerpc/mpc5121: Add clock driver
Plugs into the generic powerpc clock driver in
arch/powerpc/kernel/clock.c

The following subset of clk_interface is implemented:
    clk_get, clk_put:  get clock via name, release clock
    clk_enable, clk_disable:  enable or disable clock
    clk_get_rate:  get clock rate in Hz
    clk_set_rate:  stubbed
    clk_round_rate:  stubbed
    clk_set_parent: NULL
    clk_get_parent: NULL

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:54 -06:00
John Rigby 4df64c3e58 powerpc/mpc5121: Update device tree for MPC5121ADS evaluation board
Current device tree is only bare bones.  This patch adds nodes to make
it a complete tree for the MPC5121ads.

Added nodes include:
    mbx      - opengl coprocessor
    nfc      - nand flash controller
    cpld-pic - on board cpld
    rtc
    clock    - clock control
    pmc      - power management control
    gpio
    mscan    - can module
    i2c
    axe      - audio coprocessor
    display  - display interface unit
    mdio
    ethernet
    usb
    ioctl    - pin config
    pata
    ac97     - PSC configured as AC97
    pscfifo  - psc fifo configuration
    dma
    pci

Fix typo in header changing MDS to ADS.

Add a compatible property of the form "fsl,mpc5121-..."
to nodes missing one.

Changed localbus compatible to fsl,mpc5121-localbus, this does
not break anything because the only code that uses it finds it
via the node name, not compatible.

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:54 -06:00
Grant Likely 08b6c06de5 powerpc/mpc5200: fix compile warnings in bestcomm driver
Fix for the following compiler warnings:

  CC      arch/powerpc/sysdev/bestcomm/bestcomm.o
  arch/powerpc/sysdev/bestcomm/bestcomm.c: In function 'mpc52xx_bcom_probe':
  arch/powerpc/sysdev/bestcomm/bestcomm.c:446:
      warning: format '%08lx' expects type 'long unsigned int',
      but argument 2 has type 'phys_addr_t'
  CC      arch/powerpc/sysdev/bestcomm/sram.o
  arch/powerpc/sysdev/bestcomm/sram.c: In function 'bcom_sram_init':
  arch/powerpc/sysdev/bestcomm/sram.c:89:
      warning: format '%08lx' expects type 'long unsigned int',
      but argument 3 has type 'phys_addr_t'

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:53 -06:00
Grant Likely 7ba6d6dc8d powerpc/mpc5200: Add PSC helpers for bestcomm engine
Simplify the interface for setting up bestcomm DMA to PSCs by adding
some helper functions.  The helper function sets the correct values
for the initator and ipr values in PSC DMA tasks based on the PSC
number.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:53 -06:00
Wolfgang Grandegger b0852cb884 powerpc/mpc5200: add missing MSCAN FDT nodes for TQM52xx
This patch adds the still missing FDT nodes for the MSCAN devices for
the TQM52xx modules.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:52 -06:00
Jon Smirl 0d1cde2358 powerpc/i2c: Convert i2c-mpc into an of_platform driver
Convert i2c-mpc to an of_platform driver. Utilize the code in
drivers/of-i2c.c to make i2c modules dynamically loadable by the
device tree.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:23 -06:00
Andre Schwarz 6eb9d32298 powerpc/mpc5200: PCI write combine timer
On MPC5200 the PCI target control register (PCITCR) @ MBAR + 0xD6C is
initialized with only bit 7 (Latrule disable) set. The 8-Bit write
combine timer (Bits 24..31) should be also set to a reasonable value
_greater zero_ (0x08 = default) since setting it to 0x00 leads to
_very poor_ performance as a PCI target since external burst won't be
possible at all.

Setting the WCT to 0x08 (cache-line size) leads to good overall perfomance.

Signed-off-by: Andre Schwarz <andre.schwarz@matrix-vision.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:12 -06:00
Ingo Molnar bac0c9103b Merge branch 'tracing/ftrace' into auto-ftrace-next 2008-07-10 11:43:00 +02:00
Stefan Roese 2bf3016f89 powerpc: Fix problems with 32bit PPC's running with >= 4GB of RAM
This patch enables 32bit PPC's (with 36bit physical address space, e.g.
IBM/AMCC PPC44x) to run with >= 4GB of RAM. Mostly its just replacing types
(unsigned long -> phys_addr_t).

Tested on an AMCC Katmai with 4GB of DDR2.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-07-09 14:13:01 -04:00
Josh Boyer 3fa69dd577 powerpc/44x: Update ppc44x_defconfig
Add the virtex and sam440ep platforms to the multiboard defconfig

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-07-09 14:05:15 -04:00
Sean MacLennan 4248652d4f powerpc/44x: Support NAND boot for Rev A Warp boards
Allow the Rev A Warp boards to boot from NAND.

Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-07-09 13:36:39 -04:00
Benjamin Herrenschmidt 1bc54c0311 powerpc: rework 4xx PTE access and TLB miss
This is some preliminary work to improve TLB management on SW loaded
TLB powerpc platforms. This introduce support for non-atomic PTE
operations in pgtable-ppc32.h and removes write back to the PTE from
the TLB miss handlers. In addition, the DSI interrupt code no longer
tries to fixup write permission, this is left to generic code, and
_PAGE_HWWRITE is gone.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-07-09 13:36:17 -04:00
Josh Boyer beae4c03c0 Merge branch 'virtex-for-2.6.27' of git://git.secretlab.ca/git/linux-2.6-virtex into 4xx-next 2008-07-09 13:35:16 -04:00
Grant Likely 9fde9bdd30 powerpc/440: Convert Virtex ML507 device tree to dts-v1
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-09 10:56:11 -06:00
Grant Likely c356aa456e powerpc/bootwrapper: Allow user to specify additional default targets
It is inconvenient to add additional default targets to the bootwrapper
Makefile for each new board supported which just needs a different dts
file.  This change allows the defconfig to specify additional build
targets.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-07-09 09:41:52 -06:00
Mike Mason cde274c0c7 powerpc/eeh: PERR/SERR bit settings during EEH device recovery
The following patch restores the PERR and SERR bits in the PCI
command register during an EEH device recovery. We have found
at least one case (an Agilent test card) where the PERR/SERR
bits are set to 1 by firmware at boot time, but are not restored
to 1 during EEH recovery.  The patch fixes the Agilent card
problem.  It has been tested on several other EEH-enabled cards
with no regressions.

Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Acked-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:48 +10:00
Michael Neuling b887ec620a powerpc: remove unused variable in emulate_fp_pair
regs is not used in emulate_fp_pair so remove it.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:47 +10:00
Michael Neuling c1cb299ead powerpc: fix swapcontext backwards compat. with VSX ucontext changes
When the ucontext changed to add the VSX context, this broke backwards
compatibly on swapcontext.  swapcontext only compares the ucontext size
passed in from the user to the new kernel ucontext size.

This adds a check against the old ucontext size (with VMX but without
VSX).  It also adds some sanity check for ucontexts without VSX, but
where VSX is used according the MSR.  Fixes for both 32 and 64bit
processes on 64bit kernels

Kudos to Paulus for noticing.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:47 +10:00
Paul Gortmaker 1b17adf19b powerpc/ibmebus: more meaningful variable name
Choose a more meaningful name for better System.map readability and
autopsy value etc.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:46 +10:00
Grant Erickson 05781ccd74 ibm_newemac: Parameterize EMAC Multicast Match Handling
Various instances of the EMAC core have varying: 1) number of address
match slots, 2) width of the registers for handling address match slots,
3) number of registers for handling address match slots and 4) base
offset for those registers.

As the driver stands today, it assumes that all EMACs have 4 IAHT and
GAHT 32-bit registers, starting at offset 0x30 from the register base,
with only 16-bits of each used for a total of 64 match slots.

The 405EX(r) and 460EX now use the EMAC4SYNC core rather than the EMAC4
core. This core has 8 IAHT and GAHT registers, starting at offset 0x80
from the register base, with ALL 32-bits of each used for a total of
256 match slots.

This adds a new compatible device tree entry "emac4sync" and a new,
related feature flag "EMAC_FTR_EMAC4SYNC" along with a series of macros
and inlines which supply the appropriate parameterized value based on
the presence or absence of the EMAC4SYNC feature.

The code has further been reworked where appropriate to use those macros
and inlines.

In addition, the register size passed to ioremap is now taken from the
device tree:

	c4 for EMAC4SYNC cores
	74 for EMAC4 cores
	70 for EMAC cores

rather than sizeof (emac_regs).

Finally, the device trees have been updated with the appropriate compatible
entries and resource sizes.

This has been tested on an AMCC Haleakala board such that: 1) inbound
ICMP requests to 'haleakala.local' via MDNS from both Mac OS X 10.4.11
and Ubuntu 8.04 systems as well as 2) outbound ICMP requests from
'haleakala.local' to those same systems in the '.local' domain via MDNS
now work.

Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:46 +10:00
Dave Kleikamp 801eb73f45 powerpc/mm: Don't clear _PAGE_COHERENT when _PAGE_SAO is set
The current low level hash code on LPAR configurations clears
_PAGE_COHERENT (M) when either _PAGE_GUARDED (G) or _PAGE_NO_CACHE (I)
is set. This conflicts with _PAGE_SAO which has M, I and W bits sets at
once (normally invalid combo) to indicate the new SAO attribute.

This changes the code to allow that case.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:46 +10:00
Dave Kleikamp ef3d3246a0 powerpc/mm: Add Strong Access Ordering support
Allow an application to enable Strong Access Ordering on specific pages of
memory on Power 7 hardware. Currently, power has a weaker memory model than
x86. Implementing a stronger memory model allows an emulator to more
efficiently translate x86 code into power code, resulting in faster code
execution.

On Power 7 hardware, storing 0b1110 in the WIMG bits of the hpte enables
strong access ordering mode for the memory page.  This patchset allows a
user to specify which pages are thus enabled by passing a new protection
bit through mmap() and mprotect().  I have defined PROT_SAO to be 0x10.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:45 +10:00
Benjamin Herrenschmidt 058c78f4ba powerpc: Use new printk extension %pS to print symbols on oops
This changes the oops and backtrace code to use the new %pS
printk extension to print out symbols rather than manually
calling print_symbol.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:44 +10:00
Mark Nelson 3a4c6f0b15 powerpc: move device_to_mask() to dma-mapping.h
Move device_to_mask() to dma-mapping.h because we need to use it from
outside dma_64.c in a later patch.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:44 +10:00
Mark Nelson 7e5f810503 powerpc/cell: cell_dma_dev_setup_iommu() return the iommu table
Make cell_dma_dev_setup_iommu() return a pointer to the struct iommu_table
(or NULL if no table can be found) rather than putting this pointer into
dev->archdata.dma_data (let the caller do that), and rename this function
to cell_get_iommu_table() to reflect this change.

This will allow us to get the iommu table for a device that doesn't have
the table in the archdata.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:43 +10:00
Mark Nelson 3affedc4e1 powerpc/dma: implement new dma_*map*_attrs() interfaces
Update powerpc to use the new dma_*map*_attrs() interfaces. In doing so
update struct dma_mapping_ops to accept a struct dma_attrs and propagate
these changes through to all users of the code (generic IOMMU and the
64bit DMA code, and the iseries and ps3 platform code).

The old dma_*map_*() interfaces are reimplemented as calls to the
corresponding new interfaces.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:43 +10:00
Mark Nelson c8692362db powerpc/dma: Add struct iommu_table argument to iommu_map_sg()
Make iommu_map_sg take a struct iommu_table. It did so before commit
740c3ce667 (iommu sg merging: ppc: make
iommu respect the segment size limits).

This stops the function looking in the archdata.dma_data for the iommu
table because in the future it will be called with a device that has
no table there.

This also has the nice side effect of making iommu_map_sg() match the
other map functions.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:43 +10:00
Maxim Shchetynin fabb657005 powerpc/spufs: add atomic busy_spus counter to struct cbe_spu_info
As nr_active counter includes also spus waiting for syscalls to return
we need a seperate counter that only counts spus that are currently running
on spu side. This counter shall be used by a cpufreq governor that targets
a frequency dependent from the number of running spus.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:42 +10:00
Geoff Levand 88b90c96b7 powerpc/ps3: Quiet system bus match output
Reduce the output verbosity of ps3_system_bus_match().

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:42 +10:00
Vitaly Bordug ba0fc709e1 powerpc: Add missing reference to coherent_dma_mask
There is dma_mask in of_device upon of_platform_device_create()
but we don't actually set coherent_dma_mask. This may cause weird
behavior of USB subsystem using of_device USB host drivers.

Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-08 21:06:35 -07:00
Jeremy Kerr 2c3e47871d powerpc/spufs: only add ".ctx" file with "debug" mount option
Currently, the .ctx debug file in spu context directories is always
present.

We'd prefer to prevent users from relying on this file, so add a
"debug" mount option to spufs. The .ctx file will only be added to
the context directories when this option is present.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-09 10:13:41 +10:00
Jeremy Kerr 6f7dde812d powerpc/spufs: add sizes for context files
Populate the size member of a few context files. Leave out files that
have different semantics with read vs mmap, or contain a
variable-length hex string.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-09 10:13:41 +10:00
Jeremy Kerr 23d893f51c powerpc/spufs: allow spufs files to specify sizes
Currently, spufs never specifies the i_size for the files in context
directories, so stat() always reports 0-byte files.

This change adds allows the spufs_dir_(nosched_)contents arrays to
specify a file size. This allows stat() to report correct file sizes,
and makes SEEK_END work.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-09 10:13:40 +10:00
Jeremy Kerr 87ff6090bf powerpc/spufs: avoid magic numbers for mapping sizes
Use a set of #defines for the size of context mappings, instead of
magic numbers.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-09 10:13:40 +10:00
Luke Browning 2442a8ba5a powerpc/spufs: don't extend time time slice if context is not in spu_run
An spu context shouldn't get an extra tick if the time slice code
couldn't find something else to run. This means contexts that are not
within spu_run (ie, SPU_SCHED_SPU_RUN is cleared) will not receive
extra ticks while we have no other contexts waiting.

Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-09 10:13:40 +10:00
Luke Browning 46deed69b3 powerpc/spufs: provide context debug file
Add a ctxt file to spufs that shows spu context information that is used
in scheduling. This info can be used for debugging spufs scheduler
issues, and to isolate between application and spufs problems as it
shows a lot of state such as priorities and dispatch counts.

This file contains internal spufs state and is subject to change at any
time, and therefore no applications should depend on it.  The file is
intended for the use of spufs kernel developers.

Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-07-09 10:13:40 +10:00
Benjamin Herrenschmidt 3bc5ab9b7f powerpc: Fix unterminated of_device_id array in legacy_serial.c
A recent patch to legacy_serial.c factored out some code by
using the of_match_node() facility to match a node against
an array of possible matches. However, the patch didn't properly
terminate the array causing potential crashes in cases where no
match is found. In addition, the name of the array was poorly
chosen for a static symbol making debugging harder.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-07 08:53:49 -07:00
Grant Likely 1d46e379aa powerpc/bootwrapper: add missing bit of simpleImage target
The wrapper script is missing the bits needed for building generic
simpleImage targets (targets which don't depend on any particular
firmware interface and retrieve all their data from the device tree).

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-04 00:59:37 -06:00
Grant Likely 70bf0333d7 powerpc/bootwrapper: Add documentation of boot wrapper targets
There have been many questions on and off the mailing list about how
exactly the bootwrapper is used for embedded targets.  Add some
documentation and help text to try and clarify the system.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-04 00:59:03 -06:00
John Linn 94ec359e45 powerpc/virtex: add defconfig for virtex 5 platforms
This defconfig file is specific to Xilinx Virtex 5 FXT platform.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-04 00:59:02 -06:00
John Linn 23e7237e09 powerpc/virtex: add Xilinx 440 cpu to the cputable
Updates the cputable to include the 440 processor found in the
Xilinx Virtex5 FXT FPGA.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-04 00:59:02 -06:00
John Linn 39fd0e92b3 powerpc/virtex: add Xilinx Virtex 5 ppc440 platform support
Support for the Xilinx Virtex5 FXT 440 is being added.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-04 00:59:02 -06:00
John Linn d58577d8f3 powerpc/virtex: Fix booting of Xilinx FPGAs with 16550 for 405 and 440
The following changes add processing to initialize the Xilinx 16550 UART
in the boot wrapper for Virtex targets without firmware.  Normally the
boot wrapper assumes that the serial port has already been initialized by
firmware.

The wrapper was also modified to add the 440 build.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-04 00:58:59 -06:00
John Linn dc568ec490 powerpc/virtex: add dts file for ML507 reference design
This new file adds support for the ML507 reference design.  The ML507
uses the Virtex 5 FXT FPGA which embeds a ppc440 core.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-04 00:57:59 -06:00
Stephen Rothwell 392096e98f generic-ipi: fix linux-next tree build failure
Today's linux-next build (powerpc ppc64_defconfig) failed like this:

arch/powerpc/mm/tlb_64.c: In function 'pgtable_free_now':
arch/powerpc/mm/tlb_64.c:66: error: too many arguments to function 'smp_call_function'
arch/powerpc/kernel/machine_kexec_64.c: In function 'kexec_prepare_cpus':
arch/powerpc/kernel/machine_kexec_64.c:175: error: too many arguments to function 'smp_call_function'

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: <linuxppc-dev@ozlabs.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-03 09:25:42 +02:00
Ingo Molnar 7b4c9505f2 stacktrace: export save_stack_trace[_tsk]
Andrew Morton reported this against linux-next:

ERROR: ".save_stack_trace" [tests/backtracetest.ko] undefined!

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-03 09:17:55 +02:00
Nathan Fontenot 0db9360aaa powerpc/pseries: Update numa association of hotplug memory add for drconf memory
Update the association of a memory section with a numa node that
occurs during hotplug add of a memory section.  This adds a check in
the hot_add_scn_to_nid() routine for the
ibm,dynamic-reconfiguration-memory node in the device tree.  If
present the new hot_add_drconf_scn_to_nid() routine is invoked, which
can properly parse the ibm,dynamic-reconfiguration-memory node of the
device tree and make the proper numa node associations.

This also introduces the valid_hot_add_scn() routine as a helper
function for code that is common to the hot_add_scn_to_nid() and
hot_add_drconf_scn_to_nid() routines.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:18 +10:00