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4802 commits

Author SHA1 Message Date
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
Nathan Fontenot
8342681d3e powerpc/pseries: Split code into helper routines for drconf memory
This splits off several pieces of code that parse the
ibm,dynamic-reconfiguration-memory node of the device tree into separate
helper routines.  This is in preparation for the next commit that will
use these helper routines.  There are no functional changes in this patch.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:17 +10:00
Nathan Fontenot
3c3f67eafa powerpc/pseries: Update the device tree correctly for drconf memory add/remove
This updates the device tree manipulation routines so that memory
add/remove of lmbs represented under the
ibm,dynamic-reconfiguration-memory node of the device tree invokes the
hotplug notifier chain.

This change is needed because of the change in the way memory is
represented under the ibm,dynamic-reconfiguration-memory node.  All lmbs
are described in the ibm,dynamic-memory property instead of having a
separate node for each lmb as in previous device tree layouts.  This
requires the update_node() routine to check for updates to the
ibm,dynamic-memory property and invoke the hotplug notifier chain.

This also updates the pseries hotplug notifier to be able to gather information
for lmbs represented under the ibm,dynamic-reconfiguration-memory node and
have the lmbs added/removed.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:16 +10:00
Nathan Fontenot
92ecd1790b powerpc/pseries: Use base address to derive starting page frame number
Use the base address of the lmb to derive the starting page frame number
instead of trying to extract it from the drc index of the lmb.  The drc
index should not be used for this as it will, and did, break.

Until this point, systems that have had memory represented in the device
tree with a node for each lmb the drc index would (luckily) closely
track the base address of the lmb.  For example a lmb with a drc index
of 8000000a would have a base address of a0000000.  This correlation
allowed the current code to derive the starting page frame number from
the drc inddex

Device tree layouts where lmbs are represented under the
ibm,dynamic-reconfiguration-memory node in the ibm,dynamic-memory
property do not have this correlation between the drc index and base
address of the lmb.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:15 +10:00
Nathan Fontenot
4b6e805e4a powerpc/pseries: Allow phandle to be specified in formats other than decimal
Allow the phandle passed to the /proc/ppc64/ofdt file to be specified
in formats other than decimal.  This allows us to easily specify phandle
values in hex that would otherwise appear as negative integers.

This is an issue on systems where the value of
/proc/device-tree/ibm,dynamic-reconfiguration-memory.ibm,phandle is
fffffff9.  Having to pass this to the ofdt file as a string results in
a large negative number, and simple_strtoul() does not handle negative
numbers.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:14 +10:00
Michael Neuling
138fc1ee06 powerpc: Remove old dump_task_* functions
Since Roland's ptrace cleanup starting with commit
f65255e8d5 ("[POWERPC] Use user_regset
accessors for FP regs"), the dump_task_* functions are no longer being
used.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:13 +10:00
Michael Neuling
6a274c08f2 powerpc: Clean up copy_to/from_user for vsx and fpr
This merges and cleans up some of the ugly copy/to from user code
which is required for the new fpr and vsx layout in the thread_struct.

Also fixes some hard coded buffer sizes and removes a redundant
fpr_flush_to_thread.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:11 +10:00
Kumar Gala
2d1b202762 powerpc: Fixup lwsync at runtime
To allow for a single kernel image on e500 v1/v2/mc we need to fixup lwsync
at runtime.  On e500v1/v2 lwsync causes an illop so we need to patch up
the code.  We default to 'sync' since that is always safe and if the cpu
is capable we will replace 'sync' with 'lwsync'.

We introduce CPU_FTR_LWSYNC as a way to determine at runtime if this is
needed.  This flag could be moved elsewhere since we dont really use it
for the normal CPU_FTR purpose.

Finally we only store the relative offset in the fixup section to keep it
as small as possible rather than using a full fixup_entry.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:10 +10:00
Kumar Gala
5888da1876 powerpc: Fix building of feature-fixup tests on ppc32
We need to use PPC_LCMPI otherwise we get compile errors like:

arch/powerpc/lib/feature-fixups-test.S: Assembler messages:
arch/powerpc/lib/feature-fixups-test.S:142: Error: Unrecognized opcode: `cmpdi'
arch/powerpc/lib/feature-fixups-test.S:149: Error: Unrecognized opcode: `cmpdi'
arch/powerpc/lib/feature-fixups-test.S:164: Error: Unrecognized opcode: `cmpdi'

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:09 +10:00
Tony Breeds
db7f37de2c powerpc: Fix building of arch/powerpc/mm/mem.o when MEMORY_HOTPLUG=y and SPARSEMEM=n
Currently the kernel fails to build with the above config options with:
  CC      arch/powerpc/mm/mem.o
arch/powerpc/mm/mem.c: In function 'arch_add_memory':
arch/powerpc/mm/mem.c:130: error: implicit declaration of function 'create_section_mapping'

This explicitly includes asm/sparsemem.h in arch/powerpc/mm/mem.c and
moves the guards in include/asm-powerpc/sparsemem.h to protect the
SPARSEMEM specific portions only.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-03 16:58:07 +10:00
Paul Mackerras
781c74b1e6 Merge branch 'for-2.6.26' of git://git.secretlab.ca/git/linux-2.6-mpc52xx into merge 2008-07-03 10:05:59 +10:00
Tim Yamin
18d76ac9a4 powerpc/mpc5200: Fix lite5200b suspend/resume
Suspend/resume ("echo mem > /sys/power/state") does not work with
vanilla kernels -- the system does not suspend correctly and just
hangs. This patch fixes this so suspend/resume works:

1) of_iomap does not map the whole 0xC000 of the MPC5200 immr so
saving registers does not work.
2) PCI registers need to be saved and restored.

Signed-off-by: Tim Yamin <plasm@roo.me.uk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-01 16:08:24 -06:00
John Linn
1e6d1f2606 powerpc/legacy_serial: Bail if reg-offset/shift properties are present
The legacy serial driver does not work with an 8250 type UART that is
described in the device tree with the reg-offset and reg-shift
properties.  This change makes legacy_serial ignore these devices.

Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-01 15:12:37 -06:00
John Linn
5d1a04110b powerpc/bootwrapper: update for initrd with simpleImage
This change to the makefile corrects the build of a simpleImage with initrd.

Signed-off-by: John Linn <john.linn@xilinx>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-01 14:17:18 -06:00
Michael Neuling
f3e909c275 powerpc: Update for VSX core file and ptrace
This correctly hooks the VSX dump into Roland McGrath core file
infrastructure.  It adds the VSX dump information as an additional elf
note in the core file (after talking more to the tool chain/gdb guys).
This also ensures the formats are consistent between signals, ptrace
and core files.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 14:47:09 +10:00
Michael Neuling
436db693c4 powerpc: Fix compile error for CONFIG_VSX
Fix compile error when CONFIG_VSX is enabled.

arch/powerpc/kernel/signal_64.c: In function 'restore_sigcontext':
arch/powerpc/kernel/signal_64.c:241: error: 'i' undeclared (first use in this function)

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 14:47:07 +10:00
Stephen Rothwell
fcbc5a976b powerpc: Explicitly copy elements of pt_regs
Gcc 4.3 produced this warning:

arch/powerpc/kernel/signal_64.c: In function 'restore_sigcontext':
arch/powerpc/kernel/signal_64.c:161: warning: array subscript is above array bounds

This is caused by us copying to aliases of elements of the pt_regs
structure.  Make those explicit.

This adds one extra __get_user and unrolls a loop.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:59 +10:00
Bernhard Walle
3420b5daff powerpc: Remove experimental status of kdump on 64-bit powerpc
This removes the experimental status of kdump on PPC64.  kdump is on
PPC64 now since more than one year and it has proven to be stable.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:57 +10:00
Andrew Lewis
03d70617b8 powerpc: Prevent memory corruption due to cache invalidation of unaligned DMA buffer
On PowerPC processors with non-coherent cache architectures the DMA
subsystem calls invalidate_dcache_range() before performing a DMA read
operation.  If the address and length of the DMA buffer are not aligned
to a cache-line boundary this can result in memory outside of the DMA
buffer being invalidated in the cache.  If this memory has an
uncommitted store then the data will be lost and a subsequent read of
that address will result in an old value being returned from main memory.

Only when the DMA buffer starts on a cache-line boundary and is an exact
mutiple of the cache-line size can invalidate_dcache_range() be called,
otherwise flush_dcache_range() must be called.  flush_dcache_range()
will first flush uncommitted writes, and then invalidate the cache.

Signed-off-by: Andrew Lewis <andrew-lewis at netspace.net.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:54 +10:00
Kumar Gala
9d4ae9fc92 powerpc/bootwrapper: Pad .dtb by default
Since most bootloaders or wrappers tend to update or add some information
to the .dtb they a handled they need some working space to do that in.

By default add 1K of padding via a default setting of DTS_FLAGS.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:53 +10:00
Michael Neuling
96d5b52c84 powerpc: Add CONFIG_VSX config option
Add CONFIG_VSX config build option.  Must compile with POWER4, FPU and ALTIVEC.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:51 +10:00
Michael Neuling
ce48b21007 powerpc: Add VSX context save/restore, ptrace and signal support
This patch extends the floating point save and restore code to use the
VSX load/stores when VSX is available.  This will make FP context
save/restore marginally slower on FP only code, when VSX is available,
as it has to load/store 128bits rather than just 64bits.

Mixing FP, VMX and VSX code will get constant architected state.

The signals interface is extended to enable access to VSR 0-31
doubleword 1 after discussions with tool chain maintainers.  Backward
compatibility is maintained.

The ptrace interface is also extended to allow access to VSR 0-31 full
registers.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:50 +10:00
Michael Neuling
72ffff5b17 powerpc: Add VSX assembler code macros
This adds the macros for the VSX load/store instruction as most
binutils are not going to support this for a while.

Also add VSX register save/restore macros and vsr[0-63] register definitions.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:48 +10:00
Michael Neuling
b962ce9d26 powerpc: Add VSX CPU feature
Add a VSX CPU feature.  Also add code to detect if VSX is available
from the device tree.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:47 +10:00
Michael Neuling
c6e6771b87 powerpc: Introduce VSX thread_struct and CONFIG_VSX
The layout of the new VSR registers and how they overlap on top of the
legacy FPR and VR registers is:

                   VSR doubleword 0               VSR doubleword 1
          ----------------------------------------------------------------
  VSR[0]  |             FPR[0]            |                              |
          ----------------------------------------------------------------
  VSR[1]  |             FPR[1]            |                              |
          ----------------------------------------------------------------
          |              ...              |                              |
          |              ...              |                              |
          ----------------------------------------------------------------
  VSR[30] |             FPR[30]           |                              |
          ----------------------------------------------------------------
  VSR[31] |             FPR[31]           |                              |
          ----------------------------------------------------------------
  VSR[32] |                             VR[0]                            |
          ----------------------------------------------------------------
  VSR[33] |                             VR[1]                            |
          ----------------------------------------------------------------
          |                              ...                             |
          |                              ...                             |
          ----------------------------------------------------------------
  VSR[62] |                             VR[30]                           |
          ----------------------------------------------------------------
  VSR[63] |                             VR[31]                           |
          ----------------------------------------------------------------

VSX has 64 128bit registers.  The first 32 regs overlap with the FP
registers and hence extend them with and additional 64 bits.  The
second 32 regs overlap with the VMX registers.

This commit introduces the thread_struct changes required to reflect
this register layout.  Ptrace and signals code is updated so that the
floating point registers are correctly accessed from the thread_struct
when CONFIG_VSX is enabled.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:46 +10:00
Michael Neuling
6f3d8e6947 powerpc: Make load_up_fpu and load_up_altivec callable
Make load_up_fpu and load_up_altivec callable so they can be reused by
the VSX code.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:45 +10:00
Michael Neuling
10e343925a powerpc: Move altivec_unavailable
Move the altivec_unavailable code, to make room at 0xf40 where the
vsx_unavailable exception will be.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:44 +10:00
Michael Neuling
9c75a31c35 powerpc: Add macros to access floating point registers in thread_struct.
We are going to change where the floating point registers are stored
in the thread_struct, so in preparation add some macros to access the
floating point registers.  Update all code to use these new macros.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:43 +10:00
Michael Neuling
9e7511861c powerpc: Fix MSR setting in 32 bit signal code
If we set the SPE MSR bit in save_user_regs we can blow away the VEC
bit.  This doesn't matter in reality as they are in fact the same bit
but looks bad.

Also, when we add VSX in a later patch, we need to be able to set two
separate MSR bits here.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:42 +10:00
Tony Breeds
9b09c6d909 powerpc: Change the default link address for pSeries zImage kernels
Currently we set the start of the .text section to be 4Mb for pSeries.
In situations where the zImage is > 8Mb we'll fail to boot (due to
overlapping with OF).  Move .text in a zImage from 4MB to 64MB
(well past OF).

We still will not be able to load large zImage unless we also move OF,
to that end, add a note to the zImage ELF to move OF to 32Mb.  If this
is the very first kernel booted then we'll need to move OF manually by
setting real-base.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:32 +10:00
Michael Ellerman
c230328def powerpc: Use an alternative feature section in entry_64.S
Use an alternative feature section in _switch. There are three cases
handled here, either we don't have an SLB, in which case we jump over the
entire code section, or if we do we either do or don't have 1TB segments.

Boot tested on Power3, Power5 and Power5+.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:31 +10:00
Michael Ellerman
362e7701fd powerpc: Add self-tests of the feature fixup code
This commit adds tests of the feature fixup code, they are run during
boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke
the patching routines to check their behaviour, and others use the
macros and so are patched during the normal patching done during boot.

Because we have two sets of macros with different names, we use a macro
to generate the test of the macros, very niiiice.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:30 +10:00
Michael Ellerman
9b1a735de6 powerpc: Add logic to patch alternative feature sections
This commit adds the logic to patch alternative sections.  This is fairly
straightforward, except for branches.  Relative branches that jump from
inside the else section to outside of it need to be translated as they're
moved, otherwise they will jump to the wrong location.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:29 +10:00
Michael Ellerman
fac23fe4be powerpc: Introduce infrastructure for feature sections with alternatives
The current feature section logic only supports nop'ing out code, this means
if you want to choose at runtime between instruction sequences, one or both
cases will have to execute the nop'ed out contents of the other section, eg:

BEGIN_FTR_SECTION
	or	1,1,1
END_FTR_SECTION_IFSET(FOO)
BEGIN_FTR_SECTION
	or	2,2,2
END_FTR_SECTION_IFCLR(FOO)

and the resulting code will be either,

	or	1,1,1
	nop

or,
	nop
	or	2,2,2

For small code segments this is fine, but for larger code blocks and in
performance criticial code segments, it would be nice to avoid the nops.
This commit starts to implement logic to allow the following:

BEGIN_FTR_SECTION
	or	1,1,1
FTR_SECTION_ELSE
	or	2,2,2
ALT_FTR_SECTION_END_IFSET(FOO)

and the resulting code will be:

	or	1,1,1
or,
	or	2,2,2

We achieve this by extending the existing FTR macros. The current feature
section semantic just becomes a special case, ie. if the else case is empty
we nop out the default case.

The key limitation is that the size of the else case must be less than or
equal to the size of the default case. If the else case is smaller the
remainder of the section is nop'ed.

We let the linker put the else case code in with the rest of the text,
so that relative branches from the else case are more likley to link,
this has the disadvantage that we can't free the unused else cases.

This commit introduces the required macro and linker script changes, but
does not enable the patching of the alternative sections.

We also need to update two hand-made section entries in reg.h and timex.h

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:28 +10:00
Michael Ellerman
51c52e8669 powerpc: Split out do_feature_fixups() from cputable.c
The logic to patch CPU feature sections lives in cputable.c, but these days
it's used for CPU features as well as firmware features.  Move it into
it's own file for neatness and as preparation for some additions.

While we're moving the code, we pull the loop body logic into a separate
routine, and remove a comment which doesn't apply anymore.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:24 +10:00
Michael Ellerman
b7bcda631e powerpc: Add PPC_NOP_INSTR, a hash define for the preferred nop instruction
A bunch of code has hard-coded the value for a "nop" instruction, it
would be nice to have a #define for it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:23 +10:00
Michael Ellerman
ae0dc73625 powerpc: Add tests of the code patching routines
Add tests of the existing code patching routines, as well as the new
routines added in the last commit.  The self-tests are run late in boot
when CONFIG_CODE_PATCHING_SELFTEST=y, which depends on DEBUG_KERNEL=y.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:22 +10:00
Michael Ellerman
411781a290 powerpc: Add new code patching routines
This commit adds some new routines for patching code, which will be used
in a following commit.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:21 +10:00
Michael Ellerman
053a858efa powerpc: Make create_branch() return errors if the branch target is too large
If you pass a target value to create_branch() which is more than 32MB - 4,
or - 32MB away from the branch site, then it's impossible to create an
immediate branch.  The current code doesn't check, which will lead to us
creating a branch to somewhere else - which is bad.

For code that cares to check we return 0, which is easy to check for, and
for code that doesn't at least we'll be creating an illegal instruction,
rather than a branch to some random address.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:19 +10:00
Michael Ellerman
e7a57273c6 powerpc: Allow create_branch() to return errors
Currently create_branch() creates a branch instruction for you, and
patches it into the call site.  In some circumstances it would be nice
to be able to create the instruction and patch it later, and also some
code might want to check for errors in the branch creation before
doing the patching.  A future commit will change create_branch() to
check for errors.

For callers that don't care, replace create_branch() with
patch_branch(), which just creates the branch and patches it directly.

While we're touching all the callers, change to using unsigned int *,
as this seems to match usage better.  That allows (and requires) us to
remove the volatile in the definition of vector in powermac/smp.c and
mpc86xx_smp.c, that's correct because now that we're passing vector as
an unsigned int * the compiler knows that it's value might change
across the patch_branch() call.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:19 +10:00
Michael Ellerman
aaddd3eaca powerpc: Move code patching code into arch/powerpc/lib/code-patching.c
We currently have a few routines for patching code in asm/system.h, because
they didn't fit anywhere else. I'd like to clean them up a little and add
some more, so first move them into a dedicated C file - they don't need to
be inlined.

While we're moving the code, drop create_function_call(), it's intended
caller never got merged and will be replaced in future with something
different.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:18 +10:00
Kumar Gala
f0c426bc35 powerpc: Move common module code into its own file
Refactor common code between ppc32 and ppc64 module handling into a
shared filed.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:05 +10:00
Dave Kleikamp
87e9ab13c3 powerpc: hash_huge_page() should get the WIMG bits from the lpte
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Jon Tollefson <kniht@linux.vnet.ibm.com>
Cc: Adam Litke <agl@us.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:02 +10:00
Joel Schopp
0cb9901377 powerpc: Tell firmware we support architecture V2.06
Add the bits to the architecture-vec so that ibm,client-architecture
lets the firmware know we support the 2.06 architecture.

Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:28:00 +10:00
Joel Schopp
635f5a6354 powerpc: Add cputable entry for Power7 architected mode
Add an entry for Power7 architected mode and add "(raw)" to Power7 raw
mode to distinguish it more clearly.

Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 11:27:59 +10:00
Paul Mackerras
3a8247cc2c powerpc: Only demote individual slices rather than whole process
At present, if we have a kernel with a 64kB page size, and some
process maps something that has to be mapped with 4kB pages (such as a
cache-inhibited mapping on POWER5+, or the eHCA infiniband queue-pair
pages), we change the process to use 4kB pages everywhere.  This hurts
the performance of HPC programs that access eHCA from userspace.

With this patch, the kernel will only demote the slice(s) containing
the eHCA or cache-inhibited mappings, leaving the remaining slices
able to use 64kB hardware pages.

This also changes the slice_get_unmapped_area code so that it is
willing to place a 64k-page mapping into (or across) a 4k-page slice
if there is no better alternative, i.e. if the program specified
MAP_FIXED or if there is not sufficient space available in slices that
are either empty or already have 64k-page mappings in them.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-01 11:27:57 +10:00
Michael Neuling
e952e6c4d6 powerpc: Add cputable entry for POWER7
Add a cputable entry for the POWER7 processor.

Also tell firmware that we know about POWER7.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:31:11 +10:00
Becky Bruce
316a405841 powerpc: Get rid of bitfields in ppc_bat struct
While working on the 36-bit physical support, I noticed that there
was exactly one line of code that actually referenced the bitfields.
So I got rid of them and redefined ppc_bat as a struct of 2 u32's:
batu and batl.  I also got rid of the previous union that held the
bitfield structs and a word representation of the batu/l values.

This seems like a nicer solution than adding in a bunch of
new bitfields to support extended bat addressing that would never
get used, and just leaving the struct as-is would have been
incomplete in the face of large physical addressing.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:31:05 +10:00
Becky Bruce
7c5c4325d2 powerpc: Change BAT code to use phys_addr_t
Currently, the physical address is an unsigned long, but it should
be phys_addr_t in set_bat, [v/p]_mapped_by_bat.  Also, create a
macro that can convert a large physical address into the correct
format for programming the BAT registers.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:31:03 +10:00
Arnd Bergmann
36c35be332 powerpc: Increase CRASH_HANDLER_MAX
There are now two potential callers of machine_crash_shutdown,
so increase the limit accordingly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:31:00 +10:00
Arnd Bergmann
5acb08070d powerpc/cell: Disable ptcal in case of crash kdump
We need to disable ptcal before starting a new kernel after a crash,
in order to avoid overwriting data in the kdump kernel.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:30:58 +10:00
Arnd Bergmann
cf2076012f powerpc/pseries: Call pseries_kexec_setup only on pseries
The pseries_kexec_setup function overwrites some ppc_md
pointers, so make sure it only gets called when running on
the right architecture.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:30:57 +10:00
Benjamin Herrenschmidt
41743a4e34 powerpc: Free a PTE bit on ppc64 with 64K pages
This frees a PTE bit when using 64K pages on ppc64.  This is done
by getting rid of the separate _PAGE_HASHPTE bit.  Instead, we just test
if any of the 16 sub-page bits is set.  For non-combo pages (ie. real
64K pages), we set SUB0 and the location encoding in that field.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:30:53 +10:00
Nick Piggin
b1e2270ffe spufs: Convert nopfn to fault
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:30:44 +10:00
Segher Boessenkool
1976aef970 powerpc: Get rid of CROSS32{AS,LD,OBJCOPY}
CROSS32AS and CROSS32LD are never used (instead, CROSS32CC is used
with proper command line options).

CROSS32OBJCOPY isn't used anymore either, since the "wrapper" stuff
was added.

Remove these unused variables.

Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-30 22:30:39 +10:00
Paul Mackerras
e9a4b6a3f6 Merge branch 'linux-2.6' 2008-06-30 10:16:50 +10:00
Paul Mackerras
441dbb500b Merge branch 'next' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx 2008-06-30 09:57:05 +10:00
Kumar Gala
dee805532a powerpc: Add dma nodes to 83xx, 85xx and 86xx boards
Added DMA nodes for the elo/elo-plus DMA engines.

Renamed the interrupt controller alias in mpc832x_rdb.dts to ipic so that
its the same as all the other boards.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-27 16:04:29 -05:00
Jens Axboe
15c8b6c1aa on_each_cpu(): kill unused 'retry' parameter
It's not even passed on to smp_call_function() anymore, since that
was removed. So kill it.

Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-06-26 11:24:38 +02:00
Jens Axboe
8691e5a8f6 smp_call_function: get rid of the unused nonatomic/retry argument
It's never used and the comments refer to nonatomic and retry
interchangably. So get rid of it.

Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-06-26 11:24:35 +02:00
Jens Axboe
b7d7a2404f powerpc: convert to generic helpers for IPI function calls
This converts ppc to use the new helpers for smp_call_function() and
friends, and adds support for smp_call_function_single().

ppc loses the timeout functionality of smp_call_function_mask() with
this change, as the generic code does not provide that.

Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-06-26 11:22:13 +02:00
Kumar Gala
f82796214a powerpc/booke: Add kprobes support for booke style processors
This patch is based on work done by Madhvesh. R. Sulibhavi back in
March 2007.

We refactor some of the single step handling since it differs between
"classic" and "booke" powerpc cores.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-26 03:35:46 -05:00
Kumar Gala
b76e59d1fb powerpc/kprobes: Some minor fixes
* Mark __flush_icache_range as a function that can't be probed since its
  used by the kprobe code.

* Fix an issue with single stepping and async exceptions.  We need to
  ensure that we dont get an async exception (external, decrementer, etc)
  while we are attempting to single step the probe point.

  Added a check to ensure we only handle a single step if its really
  intended for the instruction in question.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-06-26 03:35:33 -05:00