Commit Graph

2064 Commits

Author SHA1 Message Date
Michael Ellerman ebf3a65092 [POWERPC] Hide resources on Axon PCIE root complex nodes
The PCI bridge representing the PCIE root complex on Axon, contains
device BARs for a memory range and ROM that define inbound accesses.
This confuses the kernel resource management code -- the resources
need to be hidden when Axon is a host bridge.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-20 10:15:13 +11:00
Michael Ellerman 3a4295d101 [POWERPC] Fix cell IOMMU code to cope with empty dma-ranges and non-PCI devices
The cell IOMMU code to parse the dma-ranges properties, used for the fixed
mapping, was broken in two ways for some devices.

Firstly it didn't cope with empty dma-ranges properties. An empty property
implies no translation so can be safely skipped.

The code also wrongly assumed it would be looking at PCI devices, and hard
coded the number of address and size cells.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-20 10:15:10 +11:00
Paul Mackerras bed04a4413 Merge branch 'linux-2.6' 2008-03-13 15:26:33 +11:00
Tony Breeds 98cddbfb32 [POWERPC] Fix arch/powerpc/platforms/powermac/pic.c when !CONFIG_ADB_PMU
When building arch/powerpc/platforms/powermac/pic.c when !CONFIG_ADB_PMU
we get the following warnings:

arch/powerpc/platforms/powermac/pic.c: In function 'pmacpic_find_viaint':
arch/powerpc/platforms/powermac/pic.c:623: warning: label 'not_found' defined but not used

This fixes it.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-13 10:09:27 +11:00
Paul Mackerras 9cf7f7fac8 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge 2008-03-12 17:13:57 +11:00
Jeremy Kerr c368392a99 [POWERPC] spufs: fix rescheduling of non-runnable contexts
At present, we can hit the BUG_ON in __spu_update_sched_info by reading
the regs file of a context between two calls to spu_run. The
spu_release_saved called by spufs_regs_read() is resulting in the (now
non-runnable) context being placed back on the run queue, so the next
call to spu_run ends up in the bug condition.

This change uses the SPU_SCHED_SPU_RUN flag to only reschedule a context
if it's still in spu_run().

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-03-11 12:46:18 +11:00
Jeremy Kerr ce7c191bca [POWERPC] spufs: don't (ab)use SCHED_IDLE
commit 4ef11014 introduced a usage of SCHED_IDLE to detect when
a context is within spu_run.

Instead of SCHED_IDLE (which has other meaning), add a flag to
sched_flags to tell if a context should be running.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-03-11 12:28:02 +11:00
Andy Fleming ad562c7159 [POWERPC] 83xx: Make 83xx perfmon support selectable
Not all e300 cores support the performance monitors, and the ones
that don't will be confused by the mf/mtpmr instructions.  This
allows the support to be optional, so the 8349 can turn it off
while the 8379 can turn it on.  Sadly, those aren't config options,
so it will be left to the defconfigs and the users to make that
determination.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-10 09:31:43 -05:00
Li Yang d7f46190ef [POWERPC] 83xx: Add local bus device nodes to MPC837xMDS device trees.
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 08:42:22 -06:00
Olof Johansson dda56df08a [POWERPC] pasemi: Add function engine management functions to dma_lib
Used to allocate functions for crypto/checksum offload.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-03-05 12:26:50 -06:00
Olof Johansson f37203b5cc [POWERPC] pasemi: Add flag management functions to dma_lib
Add functions to manage the channel syncronization flags to dma_lib

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-03-05 12:26:35 -06:00
Olof Johansson afea3278f7 pasemi_mac: Move RX/TX section enablement to dma_lib
Also stop both rx and tx sections before changing the configuration of
the dma device during init.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-03-05 12:12:14 -06:00
Paul Mackerras 3cecdda3f1 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into merge 2008-03-03 21:31:09 +11:00
Michael Ellerman da40451bba [POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages
The only tricky part is we need to adjust the PTE insertion loop to
cater for holes in the page table. The PTEs for each segment start on
a 4K boundary, so with 16M pages we have 16 PTEs per segment and then
a gap to the next 4K page boundary.

It might be possible to allocate the PTEs for each segment separately,
saving the memory currently filling the gaps. However we'd need to
check that's OK with the hardware, and that it actually saves memory.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman 225d49050f [POWERPC] Allow for different IOMMU page sizes in cell IOMMU code
Make some preliminary changes to cell_iommu_alloc_ptab() to allow it to
take the page size as a parameter rather than assuming IOMMU_PAGE_SIZE.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman 3d3e6da17d [POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE
We use n_pte_pages to calculate the stride through the page tables, but
we also use it to set the NPPT value in the segment table entry. That is
defined as the number of 4K pages per segment, so we should calculate
it as such regardless of the IOMMU page size.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman 7d432ff1b7 [POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately
Currently the cell IOMMU code allocates the entire IOMMU page table in a
contiguous chunk. This is nice and tidy, but for machines with larger
amounts of RAM the page table allocation can fail due to it simply being
too large.

So split the segment table and page table setup routine, and arrange to
have the dynamic and fixed page tables allocated separately.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman edf441fb80 [POWERPC] Move allocation of cell IOMMU pad page
There's no need to allocate the pad page unless we're going to actually
use it - so move the allocation to where we know we're going to use it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman 08e024272e [POWERPC] Remove unused pte_offset variable
The cell IOMMU code no longer needs to save the pte_offset variable
separately, it is incorporated into tbl->it_offset.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman 0d7386ebff [POWERPC] Use it_offset not pte_offset in cell IOMMU code
The cell IOMMU tce build and free routines use pte_offset to convert
the index passed from the generic IOMMU code into a page table offset.

This takes into account the SPIDER_DMA_OFFSET which sets the top bit
of every DMA address.

However it doesn't cater for the IOMMU window starting at a non-zero
address, as the base of the window is not incorporated into pte_offset
at all.

As it turns out tbl->it_offset already contains the value we need, it
takes into account the base of the window and also pte_offset. So use
it instead!

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman f9660e8a6c [POWERPC] Clearup cell IOMMU fixed mapping terminology
It's called the fixed mapping, not the static mapping.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Jens Osterkamp f3c1ed9720 [POWERPC] enable hardware watchpoints on cell blades
Ulrich Weigand has found that the hardware watchpoints on cell were not
working back in November :

http://ozlabs.org/pipermail/linuxppc-dev/2007-November/046135.html

This patch sets them during initialization.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Jens Osterkamp 9176c0b1f5 [POWERPC] move celleb DABRX definitions
This moves the private DABRX definitions for celleb from beat.h to
reg.h to make them usable for all.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Paul Mackerras b9c64498f5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge 2008-03-03 17:44:06 +11:00
Andre Detsch 2a58aa33da [POWERPC] spufs: fix use time accounting on SPE-overcommit
The spu_runcntl_RW register is restored within spu_restore function.
So, at the end of spu_bind_context, the SPU context is not just loaded,
but running.

This change corrects the state switch to account the time as USER.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:48:55 +11:00
Arnd Bergmann c92a1acb67 [POWERPC] spufs: serialize SLB invalidation against SLB loading
There is a potential race between flushes of the entire SLB in the MFC
and the point where new entries are being established. The problem is
that we might put a ESID entry into the MFC SLB when the VSID entry has
just been cleared by the global flush.

This can be circumvented by holding the register_lock throughout both
the flushing and the creation of SLB entries.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:19:52 +11:00
Arnd Bergmann cc4b7c1814 [POWERPC] spufs: invalidate SLB translation before adding a new entry
When we replace an SLB entry in the MFC after using up all the available
entries, there is a short window in which an incorrect entry is marked
as valid.

The problem is that the 'valid' bit is stored in the ESID, which is
always written after the VSID. Overwriting the VSID first will make the
original ESID entry point to the new VSID, which means that any
concurrent DMA accessing the old ESID ends up being redirected to the
new virtual address.  A few cycles later, we write the new ESID and
everything is fine again.

That race can be closed by writing a zero entry to the ESID first, which
makes sure that the VSID is not accessed until we write the new ESID.

Note that we don't actually need to invalidate the SLB entry using the
invalidation register, which would also flush any ERAT entries for that
segment, because the segment translation does not become invalid but is
only removed from the SLB cache.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:17:49 +11:00
Arnd Bergmann fae9ca7915 [POWERPC] spufs: synchronize IRQ when disabling
There is a small race between the context save procedure
and the SPU interrupt handling, where we expect all interrupt
processing to have finished after disabling them, while
an interrupt is still being processed on another CPU.

The obvious fix is to call synchronize_irq() after disabling
the interrupts at the start of the context save procedure
to make sure we never access the SPU any more during an
ongoing save or even after that.

Thanks to Benjamin Herrenschmidt for pointing this out.

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:16:48 +11:00
Jeremy Kerr 71791bee90 [POWERPC] spufs: fix order of sputrace thread IDs
Currently, we get the following output from sputrace:

[5.097935954] 1606: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
[5.097958164] 1606: spufs_ps_nopfn__insert (thread = 1605, spu = 15)
[5.097973529] 1607: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
[5.097989174] 1607: spufs_ps_nopfn__insert (thread = 1605, spu = 14)

Which leads me to believe that 160[67] is the current thread ID, and
1605 is the context backing the psmap.

However, the 'current' and 'owner' tids are reversed - the 'current'
tid is on the right. This change puts the current thread ID in the
left-hand column instead, and renames the right to 'ctxthread'.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:00:08 +11:00
Jeremy Kerr 0111a70186 [POWERPC] spufs: fix invalid scheduling of forgotten contexts
At present, we have a situation where a context with no owner is
re-scheduled by spu_forget:

	Thread 1: reading regs file	Thread 2: context owner

					spu_forget()
						- ctx->owner = NULL
						- set SPU_SCHED_WAS_ACTIVE

	spu_acquire_saved()
	- context is in saved state

	spu_release_saved()
	- SPU_SCHED_WAS_ACTIVE is set,
	  so spu_activate() the context,
	  which now has no owner

In spu_forget(), we shouldn't be requesting a re-schedule by setting
SPU_SCHED_WAS_ACTIVE. This change removes the set_bit in spu_forget(),
so that spu_release_saved() doesn't reinsert this destroyed context on
to the run queue.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-28 09:56:28 +11:00
Jeremy Kerr d58831375d [POWERPC] spufs: fix context destruction during psmap fault
We have a small window where a spu context may be destroyed while
we're servicing a page fault (from another thread) to the context's
problem state mapping.

After we up_read() the mmap_sem, it's possible that the context is
destroyed by its owning thread, and so the later references to ctx
are invalid. This can maifest as a deadlock on the (now free()-ed)
context state mutex.

This change adds a reference to the context before we release the
mmap_sem, so that the context cannot be destroyed.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-27 18:47:53 +11:00
Anton Vorontsov 5053037816 [POWERPC] 8xx: Timebase frequency should not depend on bus-frequency
m8xx_setup.c says:
   /* Force all 8xx processors to use divide by 16 processor clock. */

And at the same time it is using bus-frequency for calculating
timebase.  It is okay for most setups because bus-frequency is
equal to clock-frequency.

The problem emerges when cpu frequency is > 66MHz, quoting
u-boot/cpu/mpc8xx/speed.c:

        if (gd->cpu_clk <= 66000000) {
                sccr_reg |= SCCR_EBDF00;        /* bus division factor = 1 */
                gd->bus_clk = gd->cpu_clk;
        } else {
                sccr_reg |= SCCR_EBDF01;        /* bus division factor = 2 */
                gd->bus_clk = gd->cpu_clk / 2;
        }

So in case of cpu clock > 66MHz, bus_clk = cpu_clk / 2. An then, from
Linux, we calculate timebase frequency as tb_freq = bus_clk / 16,
that is cpu_clk / 2 / 16, which is wrong.

This fixes the system time drifting problem on the EP885C board
running at 133MHz.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-26 22:17:03 +11:00
Badari Pulavarty f8c8803bda [POWERPC] Add code for removing HPTEs for parts of the linear mapping
For memory remove, we need to clean up htab mappings for the
section of the memory we are removing.

This implements support for removing htab bolted mappings for pSeries
logical partitions.  Other sub-archs may need to implement similar
functionality for hotplug memory remove to work on them.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-26 22:17:03 +11:00
Paul Mackerras f8303dd3db Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/lmb-2.6 2008-02-26 21:08:45 +11:00
Eric Dujardin 4187377b24 [POWERPC] Add export for mpc52xx_set_psc_clkdiv
mpc52xx_set_psc_clkdiv is needed by PSC device drivers.

Signed-off-by: Eric Dujardin <eric.dujardin@sagem.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-02-23 22:51:28 -07:00
Paul Mackerras a8b87f609d Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge 2008-02-21 21:49:13 +11:00
Olof Johansson be2553ffb5 [POWERPC] pasemi: Register i2c devices at boot
Setup i2c_board_info based on device tree contents.  This has to be
a device_initcall since we need PCI to be probed by the time we
run it, but before the actual driver is initialized.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-21 21:08:35 +11:00
Andre Detsch 61b36fc1f7 [POWERPC] cell: fix spurious false return from spu_trap_data_{map,seg}
At present, the __spufs_trap_data_map and __spu_trap_data_seq functions
exit if spu->flags has the SPU_CONTEXT_SWITCH_ACTIVE set. This was
resulting in suprious returns from these functions, as they may be
legitimately called when we have this bit set.

We only use it in these two sanity checks, so this change removes the
flag completely. This fixes hangs in the page-fault path of SPE apps.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-20 14:57:36 +11:00
Stephen Rothwell 3d5d27c40f [POWERPC] Fix warning in pseries/power.c
Introduced by commit 79393fc46e
("kobject: convert pseries/power.c to kobj_attr interface").

sys_create_file takes a "struct attrbute *" not a "struct
kobj_addribute *".

arch/powerpc/platforms/pseries/power.c: In function 'apo_pm_init':
arch/powerpc/platforms/pseries/power.c:78: warning: passing argument 2 of 'sysfs_create_file' from incompatible pointer type

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-20 13:33:37 +11:00
Jeremy Kerr 4ef110141b [POWERPC] spufs: fix scheduler starvation by idle contexts
2.6.25 has a regression where we can starve the scheduler by creating
(N_SPES+1) contexts, then running them one at a time.

The final context will never be run, as the other contexts are loaded on
the SPEs, none of which are repoted as free (ie, spu->alloc_state !=
SPU_FREE), so spu_get_idle() doesn't give us a spu to run on. Because
all of the contexts are stopped, none are descheduled by the scheduler
tick, as spusched_tick returns if spu_stopped(ctx).

This change replaces the spu_stopped() check with checking for SCHED_IDLE
in ctx->policy. We set a context's policy to SCHED_IDLE when we're not
in spu_run(). We also favour SCHED_IDLE contexts when looking for contexts
to unbind, but leave their timeslice intact for later resumption.

This patch fixes the following test in the spufs-testsuite:
  tests/20-scheduler/02-yield-starvation

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-19 10:12:02 +11:00
Josh Boyer 4b63c3b9a6 [POWERPC] 44x: Fix Kconfig formatting
Clean up some whitespace issues in the 44x Kconfig file.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-15 22:05:03 -06:00
Linus Torvalds b9e222904c Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Remove unused CONFIG_WANT_DEVICE_TREE
  [POWERPC] Cell RAS: Remove DEBUG, and add license and copyright
  [POWERPC] hvc_rtas_init() must be __init
  [POWERPC] free_property() must not be __init
  [POWERPC] vdso_do_func_patch{32,64}() must be __init
  [POWERPC] Remove generated files on make clean
  [POWERPC] Fix arch/ppc compilation - add typedef for pgtable_t
  [POWERPC] Wire up new timerfd syscalls
  [POWERPC] PS3: Update sys-manager button events
  [POWERPC] PS3: Sys-manager code cleanup
  [POWERPC] PS3: Use system reboot on restart
  [POWERPC] PS3: Fix bootwrapper hang bug
  [POWERPC] PS3: Fix reading pm interval in logical performance monitor
  [POWERPC] PS3: Fix setting bookmark in logical performance monitor
  [POWERPC] Fix DEBUG_PREEMPT warning when warning
2008-02-14 21:22:33 -08:00
Jan Blunck 1d957f9bf8 Introduce path_put()
* Add path_put() functions for releasing a reference to the dentry and
  vfsmount of a struct path in the right order

* Switch from path_release(nd) to path_put(&nd->path)

* Rename dput_path() to path_put_conditional()

[akpm@linux-foundation.org: fix cifs]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 21:13:33 -08:00
Jan Blunck 4ac9137858 Embed a struct path into struct nameidata instead of nd->{dentry,mnt}
This is the central patch of a cleanup series. In most cases there is no good
reason why someone would want to use a dentry for itself. This series reflects
that fact and embeds a struct path into nameidata.

Together with the other patches of this series
- it enforced the correct order of getting/releasing the reference count on
  <dentry,vfsmount> pairs
- it prepares the VFS for stacking support since it is essential to have a
  struct path in every place where the stack can be traversed
- it reduces the overall code size:

without patch series:
   text    data     bss     dec     hex filename
5321639  858418  715768 6895825  6938d1 vmlinux

with patch series:
   text    data     bss     dec     hex filename
5320026  858418  715768 6894212  693284 vmlinux

This patch:

Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix cifs]
[akpm@linux-foundation.org: fix smack]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14 21:13:33 -08:00
Grant Likely d4eac7501f [POWERPC] Remove unused CONFIG_WANT_DEVICE_TREE
CONFIG_DEVICE_TREE was the only user of CONFIG_WANT_DEVICE_TREE but
it was removed in commit id 2543133381
(bootwrapper: Build multiple cuImages).

This removes CONFIG_WANT_DEVICE_TREE from Kconfig and the defconfigs.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:03 +11:00
Michael Ellerman bdb226bac1 [POWERPC] Cell RAS: Remove DEBUG, and add license and copyright
arch/powerpc/platforms/cell/ras.c still has DEBUG #defined, which is no
longer necessary.  Disable it - this disables two pr_debugs().

While we're there this file should have a copyright notice and license,
so add both.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:02 +11:00
Adrian Bunk 16e543ffa8 [POWERPC] free_property() must not be __init
This fixes the following section mismatch:

<--  snip  -->

...
WARNING: vmlinux.o(.text+0x55648): Section mismatch in reference from the function .free_node() to the function .init.text:.free_property()
...

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-14 22:11:02 +11:00
David S. Miller d9b2b2a277 [LIB]: Make PowerPC LMB code generic so sparc64 can use it too.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-13 16:56:49 -08:00
Mathieu Desnoyers fb40bd78b0 Linux Kernel Markers: support multiple probes
RCU style multiple probes support for the Linux Kernel Markers.  Common case
(one probe) is still fast and does not require dynamic allocation or a
supplementary pointer dereference on the fast path.

- Move preempt disable from the marker site to the callback.

Since we now have an internal callback, move the preempt disable/enable to the
callback instead of the marker site.

Since the callback change is done asynchronously (passing from a handler that
supports arguments to a handler that does not setup the arguments is no
arguments are passed), we can safely update it even if it is outside the
preempt disable section.

- Move probe arm to probe connection. Now, a connected probe is automatically
  armed.

Remove MARK_MAX_FORMAT_LEN, unused.

This patch modifies the Linux Kernel Markers API : it removes the probe
"arm/disarm" and changes the probe function prototype : it now expects a
va_list * instead of a "...".

If we want to have more than one probe connected to a marker at a given
time (LTTng, or blktrace, ssytemtap) then we need this patch. Without it,
connecting a second probe handler to a marker will fail.

It allow us, for instance, to do interesting combinations :

Do standard tracing with LTTng and, eventually, to compute statistics
with SystemTAP, or to have a special trigger on an event that would call
a systemtap script which would stop flight recorder tracing.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Mike Mason <mmlnx@us.ibm.com>
Cc: Dipankar Sarma <dipankar@in.ibm.com>
Cc: David Smith <dsmith@redhat.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Cc: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-13 16:21:20 -08:00
Linus Torvalds dde0013782 Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Add arch-specific walk_memory_remove() for 64-bit powerpc
  [POWERPC] Enable hotplug memory remove for 64-bit powerpc
  [POWERPC] Add remove_memory() for 64-bit powerpc
  [POWERPC] Make cell IOMMU fixed mapping printk more useful
  [POWERPC] Fix potential cell IOMMU bug when switching back to default DMA ops
  [POWERPC] Don't enable cell IOMMU fixed mapping if there are no dma-ranges
  [POWERPC] Fix cell IOMMU null pointer explosion on old firmwares
  [POWERPC] spufs: Fix timing dependent false return from spufs_run_spu
  [POWERPC] spufs: No need to have a runnable SPU for libassist update
  [POWERPC] spufs: Update SPU_Status[CISHP] in backing runcntl write
  [POWERPC] spufs: Fix state_mutex leaks
  [POWERPC] Disable G5 NAP mode during SMU commands on U3
2008-02-08 09:31:42 -08:00
Miklos Szeredi 90d09e141b mount options: fix spufs
Add a .show_options super operation to spufs.

Use generic_show_options() and save the complete option string in
spufs_fill_super().

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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>
2008-02-08 09:22:40 -08:00
Christoph Hellwig 74bedc4d56 libfs: rename simple_attr_close to simple_attr_release
simple_attr_close implementes ->release so it should be named accordingly.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: <stefano.brivio@polimi.it>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg KH <greg@kroah.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 09:22:34 -08:00
Christoph Hellwig 8b88b0998e libfs: allow error return from simple attributes
Sometimes simple attributes might need to return an error, e.g. for
acquiring a mutex interruptibly.  In fact we have that situation in
spufs already which is the original user of the simple attributes.  This
patch merged the temporarily forked attributes in spufs back into the
main ones and allows to return errors.

[akpm@linux-foundation.org: build fix]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: <stefano.brivio@polimi.it>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg KH <greg@kroah.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08 09:22:34 -08:00
Michael Ellerman 44621be4b5 [POWERPC] Make cell IOMMU fixed mapping printk more useful
Currently the cell IOMMU fixed mapping just printks that it's been setup,
which is not particularly useful.  Much more interesting is the address
ranges for the different windows.  This adds one line to dmesg on a blade.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:40 +11:00
Michael Ellerman 4a8df1507e [POWERPC] Fix potential cell IOMMU bug when switching back to default DMA ops
If we get a 64-bit dma mask we switch to the fixed ops and call
cell_dma_dev_setup().  If the driver then switches back to a 32-bit dma
mask for any reason we don't call cell_dma_dev_setup() again, which
has the potential to leave bogus data in dev->archdata.dma_data.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:40 +11:00
Michael Ellerman 0e0b47abb7 [POWERPC] Don't enable cell IOMMU fixed mapping if there are no dma-ranges
In order for the cell IOMMU fixed mapping to work we need "dma-ranges"
properties in the device tree. If there are none then there's no point
enabling the fixed mapping support.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:40 +11:00
Michael Ellerman ccd05d086f [POWERPC] Fix cell IOMMU null pointer explosion on old firmwares
The cell IOMMU fixed mapping support has a null pointer bug if you run
it on older firmwares that don't contain the "dma-ranges" properties.
Fix it and convert to using of_get_next_parent() while we're there.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:39 +11:00
Luke Browning 85687ff2b4 [POWERPC] spufs: Fix timing dependent false return from spufs_run_spu
Stop bits are only valid when the running bit is not set.  Status bits
carry over from one invocation of spufs_run_spu() to another, so the
RUNNING bit gets added to the previous state of the register which may
have been a remote library call.  In this case, it looks like another
library routine should be invoked, but the spe is actually running.

This fixes a problem with a testcase that exercises the scheduler.

Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:36 +11:00
Luke Browning e66686b414 [POWERPC] spufs: No need to have a runnable SPU for libassist update
We don't need to update the libassist statistic with the context in a
runnable state, so do it after spu_disable_spu().

Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:36 +11:00
Masato Noguchi 732377c5f5 [POWERPC] spufs: Update SPU_Status[CISHP] in backing runcntl write
Currently, the kernel may fail to restart a SPE context which
has stopped and been swapped out.

This changes spu_backing_runcntl_write to emulate the real
SPU_Status register exactly.  When the SPU Run Control register
is written with SPU_RunCntl[Run] set to '1', the physical SPU
automatically sets SPU_Status[R] and clears SPU_Status[CISHP].

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:35 +11:00
Christoph Hellwig eebead5b8f [POWERPC] spufs: Fix state_mutex leaks
Fix various state_mutex leaks.  The worst one was introduced by the
interrutible state_mutex conversion but there've been a few before
too.  Notably spufs_wait now returns without the state_mutex held
when returning an error, which actually cleans up some code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:35 +11:00
Benjamin Herrenschmidt 592a607bbc [POWERPC] Disable G5 NAP mode during SMU commands on U3
It appears that with the U3 northbridge, if the processor is in NAP
mode the whole time while waiting for an SMU command to complete,
then the SMU will fail.  It could be related to the weird backward
mechanism the SMU uses to get to system memory via i2c to the
northbridge that doesn't operate properly when the said bridge is
in napping along with the CPU.  That is on U3 at least, U4 doesn't
seem to be affected.

This didn't show before NO_HZ as the timer wakeup was enough to make
it work it seems, but that is no longer the case.

This fixes it by disabling NAP mode on those machines while
an SMU command is in flight.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:35 +11:00
Linus Torvalds 3796958130 Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (69 commits)
  [POWERPC] Add SPE registers to core dumps
  [POWERPC] Use regset code for compat PTRACE_*REGS* calls
  [POWERPC] Use generic compat_sys_ptrace
  [POWERPC] Use generic compat_ptrace_request
  [POWERPC] Use generic ptrace peekdata/pokedata
  [POWERPC] Use regset code for PTRACE_*REGS* requests
  [POWERPC] Switch to generic compat_binfmt_elf code
  [POWERPC] Switch to using user_regset-based core dumps
  [POWERPC] Add user_regset compat support
  [POWERPC] Add user_regset_view definitions
  [POWERPC] Use user_regset accessors for GPRs
  [POWERPC] ptrace accessors for special regs MSR and TRAP
  [POWERPC] Use user_regset accessors for SPE regs
  [POWERPC] Use user_regset accessors for altivec regs
  [POWERPC] Use user_regset accessors for FP regs
  [POWERPC] mpc52xx: fix compile error introduce when rebasing patch
  [POWERPC] 4xx: PCIe indirect DCR spinlock fix.
  [POWERPC] Add missing native dcr dcr_ind_lock spinlock
  [POWERPC] 4xx: Fix offset value on Warp board
  [POWERPC] 4xx: Add 440EPx Sequoia ehci dts entry
  ...
2008-02-07 09:02:26 -08:00
Josh Boyer 256ae6a720 Merge branch 'virtex-for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-virtex into for-2.6.25 2008-02-06 21:06:45 -06:00
Sean MacLennan c41f4af8fe [POWERPC] 4xx: Fix offset value on Warp board
While merging, I found a small bug that I forgot to send. I add an
offset to a value twice.

Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-06 21:02:54 -06:00
Josh Boyer fde9d16fae [POWERPC] 4xx: Fix Walnut build
The addition of of_rtc for the Walnut board was only half complete.  Select
OF_RTC in the Kconfig and include the appropriate header to make it compile.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-06 21:02:51 -06:00
Nathan Fontenot de0723dcca [POWERPC] Update default irq servers when boot cpu is removed
The xics code does update the default server information when the boot
cpu is removed.  This patch recognizes when the boot cpu is being
removed and updates the appropriate information based on the new 'boot
cpu'.

Failure to update this information can causes us to leave irqs pinned
to cpus that are being removed, especially when removing the boot cpu.
The cpu is removed from the kernel, but cpu dlpar remove operations
fail since we cannot return the cpu to the hypervisor.

Signed-off-by: Nathan Fonteno <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07 11:40:19 +11:00
Nathan Fontenot b99e62608b [POWERPC] Remove redundant of_get_cpu_node routine
It appears that xics.c has its own of_get_cpu_node().  Remove this and
use the common one from prom.c.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07 11:40:19 +11:00
Nathan Fontenot c3e8506c54 [POWERPC] Split xics_teardown_cpu()
This splits off the kexec path bits of the xics_teardown_cpu() routine
into its own xics_kexec_teardown_cpu() routine.  With the previous
combined routine the CPPR for a cpu that is being removed may have its
CPPR reset in the plpar_eoi() call (which explicitly sets the CPPR to
a non-zero value).  Splitting of the kexec bits of the code prevents
this from happening in the cpu remove path.

Once again, this does not cause the cpu remove from the kernel to
fail, but it does cause cpu dlpar operations to not be able to return
the cpu to the hypervisor.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07 11:40:19 +11:00
Nathan Fontenot a52572ddcd [POWERPC] Update irq descriptor affinity
The affinity mask in the virq descriptor needs to be set before we
reset the affinity for the virq.  Without doing this the call to get
the new irq server fails and we end up leaving the virq pinned to the
cpu we are removing.

This does not fail the cpu remove from the kernel, but it does prevent
cpu dlpar remove operations from returning the cpu to the hypervisor.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-07 11:40:19 +11:00
Paul Mackerras 1f7d4f8395 Merge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xx into for-2.6.25 2008-02-07 11:21:09 +11:00
John Rigby e177edcd15 [POWERPC] mpc512x: Basic platform support
512x is very similar to 83xx and most
of this is patterned after code from 83xx.

New platform:
    changed:
	arch/powerpc/Kconfig
	arch/powerpc/platforms/Kconfig
	arch/powerpc/platforms/Kconfig.cputype
	arch/powerpc/platforms/Makefile
    new:
	arch/powerpc/platforms/512x/*
	include/asm-powerpc/mpc512x.h

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-02-06 14:03:10 -07:00
Adrian Bunk 6c81c32f96 calibrate_delay() must be __cpuinit
calibrate_delay() must be __cpuinit, not __{dev,}init.

I've verified that this is correct for all users.

While doing the latter, I also did the following cleanups:
- remove pointless additional prototypes in C files
- ensure all users #include <linux/delay.h>

This fixes the following section mismatches with CONFIG_HOTPLUG=n,
CONFIG_HOTPLUG_CPU=y:

WARNING: vmlinux.o(.text+0x1128d): Section mismatch: reference to .init.text.1:calibrate_delay (between 'check_cx686_slop' and 'set_cx86_reorder')
WARNING: vmlinux.o(.text+0x25102): Section mismatch: reference to .init.text.1:calibrate_delay (between 'smp_callin' and 'cpu_coregroup_map')

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Christian Zankel <chris@zankel.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:08 -08:00
Stephen Neuendorffer 0e349b0e2d [POWERPC] Xilinx: Update compatible to use values generated by BSP generator.
Mainly, this involves two changes:
1) xilinx->xlnx (recognized standard is to use the stock ticker)
2) In order to have the device tree focus on describing what the
hardware is as exactly as possible, the compatible strings contain the
full IP name and IP version.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-02-06 10:23:21 -07:00
Paul Mackerras b370b08274 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into for-2.6.25 2008-02-06 22:08:37 +11:00
Julia Lawall 75e89b02e3 [POWERPC] arch/powerpc/platforms/82xx: Add missing of_node_put
Of_get_parent and of_find_compatible_node do a of_node_get, and thus a
corresponding of_code_put is needed in both the error case and the normal
return case.

The problem was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T,T1,T2;
identifier E;
statement S;
expression x1,x2,x3;
int ret;
@@

  T E;
  ...
* E = \(of_get_parent\|of_find_compatible_node\)(...);
  if (E == NULL) S
  ... when != of_node_put(...,(T1)E,...)
      when != if (E != NULL) { ... of_node_put(...,(T1)E,...); ...}
      when != x1 = (T1)E
      when != E = x3;
      when any
  if (...) {
    ... when != of_node_put(...,(T2)E,...)
        when != if (E != NULL) { ... of_node_put(...,(T2)E,...); ...}
        when != x2 = (T2)E
(
*   return;
|
*   return ret;
)
  }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 22:06:59 +11:00
Julia Lawall 842decbd67 [POWERPC] arch/powerpc/platforms/pseries: Add missing of_node_put
Of_get_parent and of_find_compatible_node do an of_node_get, and thus a
corresponding of_code_put is needed in the error case.

The problem was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T,T1,T2;
identifier E;
statement S;
expression x1,x2,x3;
int ret;
@@

  T E;
  ...
* E = \(of_get_parent\|of_find_compatible_node\)(...);
  if (E == NULL) S
  ... when != of_node_put(...,(T1)E,...)
      when != if (E != NULL) { ... of_node_put(...,(T1)E,...); ...}
      when != x1 = (T1)E
      when != E = x3;
      when any
  if (...) {
    ... when != of_node_put(...,(T2)E,...)
        when != if (E != NULL) { ... of_node_put(...,(T2)E,...); ...}
        when != x2 = (T2)E
(
*   return;
|
*   return ret;
)
  }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 22:06:59 +11:00
Kim Phillips aafa195550 [POWERPC] 83xx: mpc832x_rdb: fix compiler warning
arch/powerpc/platforms/83xx/mpc832x_rdb.c: In function ‘mpc832x_rdb_setup_arch’:
arch/powerpc/platforms/83xx/mpc832x_rdb.c:104: warning: ‘np’ is used uninitialized in this function

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-05 23:38:10 -06:00
Andy Fleming 1347a2c1eb [POWERPC} Add oprofile support for e300
The e300 c3 and c4 variants support hardware performance monitor counters
which are identical to those found in the e500.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-05 23:37:58 -06:00
Andy Fleming 39aef685af [POWERPC] Made FSL Book-E PMC support more generic
Some of the more recent e300 cores have the same performance monitor
implementation as the e500.  e300 isn't book-e, so the name isn't
really appropriate.  In preparation for e300 support, rename a bunch
of fsl_booke things to say fsl_emb (Freescale Embedded Performance Monitors).

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-05 23:34:14 -06:00
Jon Loeliger 0367aad1ad [POWERPC] Fix storcenter DTS typos, feedback, IRQs.
Cleaned up IRQ layout and removed unsused ISU allocations.
Fixed RTC address typo from /dts-v1/ conversion.
Incorporated list suggestions to use an "iomega," vendor prefix,
and to use a node reference rather than a hard path.

Signed-off-by: Jon Loeliger <jdl@@jdl.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-05 23:33:46 -06:00
Stephen Rothwell c6d01179bf [POWERPC] Avoid possible extra of_node_put in axon_msi.c
I got this warning from gcc:
arch/powerpc/platforms/cell/axon_msi.c:118: warning: 'tmp' may be used uninitialized in this function

Which turns out to be a false positive, but pointed out that it was
possible for the error path in find_msi_translator() to do an extra
of_node_put on a node.  This fixes it by localising the ref counting
a bit.  As a side effect, the warning goes away.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:30:00 +11:00
Michael Ellerman de4c928b84 [POWERPC] Avoid DMA exception when using axon_msi with IOMMU
There's a brown-paper-bag bug in axon_msi, we pass the address of our
FIFO directly to the hardware, without DMA mapping it.  This leads to
DMA exceptions if you enable MSI & the IOMMU.

The fix is to correctly DMA map the fifo, dma_alloc_coherent() does
what we want - and we need to track the virt & phys addresses.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:30:00 +11:00
Michael Ellerman e4347dfb58 [POWERPC] Convert axon_msi to an of_platform driver
Now that we create of_platform devices earlier on cell, we can make the
axon_msi driver an of_platform driver.  This makes the code cleaner in
several ways, and most importantly means we have a struct device.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:30:00 +11:00
Michael Ellerman bb125fb0e0 [POWERPC] Search for and publish cell OF platform devices earlier
Currently cell publishes OF devices at device_initcall() time, which
means the earliest a driver can bind to a device is also device_initcall()
time.  We have a driver we want to register before other devices, so
publish the devices at subsys_initcall() time.

This should not cause any behaviour change for existing drivers, as they
are still bound at device_initcall() time.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:29:59 +11:00
Scott Wood 266fb4af93 [POWERPC] 8xx: adder875, ep88xc: fix to match recent 8xx cleanups.
asm/commproc.h was renamed to asm/cpm1.h
sysdev/commproc.h was renamed to platforms/8xx/mpc8xx.h
m8xx_pic_init was renamed to mpc8xx_pics_init

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-05 23:29:58 -06:00
Andre Detsch 58119068cb [POWERPC] spufs: Fix memory leak on SPU affinity
Reference count for the "neighbor" spu context was not
being correctly decremented after usage.
So, contexts used as reference during SPU affinity setup
were not being deallocated, leading to a memory leak.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:26:59 +11:00
Jeremy Kerr 60cf54db47 [POWERPC] spufs: Fix SPE single-step mode
Currently we only catch debug events through the 0x3fff status;
spufs_run_spu doesn't handle single-step SPE events.

This change adds a handler for conditions where the SPE is stopped due
to single-step-mode.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:26:59 +11:00
Christoph Hellwig 038200cfdc [POWERPC] spufs: Add marker-based tracing facility
This adds markers two important points in the spufs code and a new
module (sputrace.ko) that allows reading these out through a proc file.

Long-term I'd rather see something like lttng extended to use the spufs
instrumentation, but for now I think this is a good enough quick
solution.  We'll probably want to add various addition event in addition
to that ones I have already.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-06 16:26:59 +11:00
Kim Phillips b74a7e50cc [POWERPC] 83xx: configure USB clock for MPC8315E
SCCR USB bits are in a different location on the mpc8315.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-05 23:19:03 -06:00
FUJITA Tomonori fb3475e9b6 iommu sg: powerpc: convert iommu to use the IOMMU helper
This patch converts PPC's IOMMU to use the IOMMU helper functions.  The IOMMU
doesn't allocate a memory area spanning LLD's segment boundary anymore.

iseries_hv_alloc and iseries_hv_map don't have proper device
struct. 4GB boundary is used for them.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:11 -08:00
Rafael J. Wysocki c697eecebc Suspend: Introduce begin() and end() callbacks
On ACPI systems the target state set by acpi_pm_set_target() is
reset by acpi_pm_finish(), but that need not be called if the
suspend fails.  All platforms that use the .set_target() global
suspend callback are affected by analogous issues.

For this reason, we need an additional global suspend callback that
will reset the target state regardless of whether or not the suspend
is successful.  Also, it is reasonable to rename the .set_target()
callback, since it will be used for a different purpose on ACPI
systems (due to ACPI 1.0x code ordering requirements).

Introduce the global suspend callback .end() to be executed at the
end of the suspend sequence and rename the .set_target() global
suspend callback to .begin().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-01 18:30:56 -05:00
Olof Johansson 2da53b0134 pasemi: Fix thinko in dma_direct_ops setup
[POWERPC] pasemi: Fix thinko in dma_direct_ops setup

The first patch will just fall through and still set dma_data to a bad
value, make it return directly instead.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01 21:03:36 +11:00
Olof Johansson 24af8cb869 POWERPC: Set dma_data correctly for direct_ops on pasemi
More late-caught fallout from the mainline merge.  Commit
35e4a6e26d ("[POWERPC] Use
archdata.dma_data in dma_direct_ops and add the offset") claimed

  "Now that all platforms using dma_direct_offset setup the
   archdata.dma_data correctly, ..."

..but nope -- the pasemi iommu setup code that disables translation on
the DMA pci device didn't set dma_data correctly.

This fixes it.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-31 19:59:44 +11:00
Michael Ellerman 99e139126a [POWERPC] Cell IOMMU fixed mapping support
This patch adds support for setting up a fixed IOMMU mapping on certain
cell machines.  For 64-bit devices this avoids the performance overhead of
mapping and unmapping pages at runtime.  32-bit devices are unable to use
the fixed mapping.

The fixed mapping is established at boot, and maps all of physical memory
1:1 into device space at some offset.  On machines with < 30 GB of memory
we setup the fixed mapping immediately above the normal IOMMU window.

For example a machine with 4GB of memory would end up with the normal
IOMMU window from 0-2GB and the fixed mapping window from 2GB to 6GB. In
this case a 64-bit device wishing to DMA to 1GB would be told to DMA to
3GB, plus any offset required by firmware.  The firmware offset is encoded
in the "dma-ranges" property.

On machines with 30GB or more of memory, we are unable to place the fixed
mapping above the normal IOMMU window as we would run out of address space.
Instead we move the normal IOMMU window to coincide with the hash page
table, this region does not need to be part of the fixed mapping as no
device should ever be DMA'ing to it.  We then setup the fixed mapping
from 0 to 32GB.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-31 12:11:11 +11:00
Michael Ellerman c96b51265a [POWERPC] Split out the ioid fetching/checking logic
Split out the ioid fetching and checking logic so we can use it elsewhere
in a subsequent patch.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-31 12:11:11 +11:00
Michael Ellerman 4134791728 [POWERPC] Add support to cell_iommu_setup_page_tables() for multiple windows
Add support to cell_iommu_setup_page_tables() for handling two windows,
the dynamic window and the fixed window.  A fixed window size of 0
indicates that there is no fixed window at all.

Currently there are no callers who pass a non-zero fixed window, but the
upcoming fixed IOMMU mapping patch will change that.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-31 12:11:11 +11:00
Michael Ellerman 86865771ea [POWERPC] Split out the IOMMU logic from cell_dma_dev_setup()
Split the IOMMU logic out from cell_dma_dev_setup() into a separate
function.  If we're not using dma_direct_ops or dma_iommu_ops we don't
know what the hell's going on, so BUG.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-31 12:11:10 +11:00
Michael Ellerman 7fc67afc43 [POWERPC] Split cell_iommu_setup_hardware() into two parts
Split cell_iommu_setup_hardware() into two parts.  Split the page table
setup into cell_iommu_setup_page_tables() and the bits that kick the
hardware into cell_iommu_enable_hardware().

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-31 12:11:10 +11:00
Michael Ellerman 209bfbb478 [POWERPC] Split out the logic that allocates struct iommus
Split out the logic that allocates a struct iommu into a separate
function.  This can fail however the calling code has never cared - so
just return if we can't allocate an iommu.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-31 12:11:10 +11:00
Paul Mackerras bd45ac0c5d Merge branch 'linux-2.6' 2008-01-31 11:25:51 +11:00
Paul Mackerras 4eece4ccf9 Merge branch 'for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-mpc52xx 2008-01-31 10:50:17 +11:00
Olof Johansson 06daa168b6 pasemi: export pasemi_dma_init()
Forgot to export this one. Needed when pasemi_mac is compiled as a module.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:07:21 -08:00
Olof Johansson 8ee9d85779 pasemi: DMA engine management library
pasemi: DMA engine management library

Introduce a DMA management library to manage the various DMA resources
on the PA Semi SoCs. Since several drivers need to allocate these shared
resources, provide some abstractions as well as allocation/free functions
for channels, etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:21 -08:00
Kumar Gala 77b41597e8 [POWERPC] 85xx: convert sbc85* boards to use machine_device_initcall
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 13:15:26 -06:00
Kumar Gala b38308ac8e [POWERPC] 83xx: rework platform Kconfig
* Allow multiple boards to be selected in a single build
* Removed Kconfig option '83xx' which existed only for compat with arch/ppc
* Removed Kconfig option 'PPC_MPC836x' since its not used
* Renamed Kconfig option 'MPC834x' to 'PPC_MPC834x' to match others
* Added a multiplatform 83xx defconfig (mpc83xx_defconfig).

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 13:15:24 -06:00
Kumar Gala 3a83156bd8 [POWERPC] 85xx: rework platform Kconfig
* Allow multiple boards to be selected in a single build
* Removed Kconfig option '85xx' which existed only for compat with arch/ppc
* Added a multiplatform 85xx defconfig (mpc85xx_defconfig). This builds
  all 85xx boards except sbc8560 and stx_gp3 since these to boards have
  board specific ifdef in driver code that may break all other boards

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 13:13:12 -06:00
Kim Phillips 38f66f90b2 [POWERPC] 83xx: add MPC837x RDB platform support
primarily based on mpc837x mds code.

Signed-off-by: Joe D'Abbraccio <ljd015@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:33:05 -06:00
Kim Phillips 846aace363 [POWERPC] 83xx: add base platform support for the mpc8315 rdb board
mpc8315 identical to mpc8313 here, just check compatible.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:33:00 -06:00
Kim Phillips 519fd80da9 [POWERPC] 83xx: fold the mpc8313 platform into the mpc831x platform
prepare for adding support for the mpc8315 rdb, since they are
identical wrt platform code.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:32:59 -06:00
Anton Vorontsov a2dd70a11d [POWERPC] QE: get rid of most device_types and model
Now we're searching for "fsl,qe", "fsl,qe-muram", "fsl,qe-muram-data"
and "fsl,qe-ic".

Unfortunately it's still impossible to remove device_type = "qe"
from the existing device trees because older u-boots are looking for it.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:32:55 -06:00
Kumar Gala f67be814ff [POWERPC] 85xx: some minor cleanups for stx_gp3 and tqm85xx
* "simple-bus" covers all our needs for of_platform_bus_probe()
* make device tree name just 'soc' not 'soc85..'

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:32:53 -06:00
Jochen Friedrich b5677d848c [POWERPC] CPM: Rename commproc to cpm1 and cpm2_common.c to cpm2.c
Rename commproc.[ch] to cpm1.[ch] to be more consistent with cpm2. Also
rename cpm2_common.c to cpm2.c as suggested by Scott Wood. Adjust the
includes accordingly.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:31:05 -06:00
Jochen Friedrich 02753cb608 [POWERPC] 8xx: Get rid of conditional includes of board specific setup
Directly include mpc885ads.h from mpc885ads_setup.c. Now we can get rid
of the arch dependent includes in mpc8xx.h.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:31:04 -06:00
Jochen Friedrich 49b51545ff [POWERPC] 8xx: Remove sysdev/commproc.h
Move cpm1 specific prototypes to asm/commproc.h and mpc8xx specific
prototypes to asm/mpc8xx.h. Adjust includes accordingly. Remove now
unneeded sysdev/commproc.h.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:31:02 -06:00
Jochen Friedrich 9e8f38b038 [POWERPC] 8xx: Remove unneeded and misspelled prototype m8xx_calibrate_decr
m8xx_calibrate_decr seems to be a misspelled prototype for
mpc8xx_calibrate_decr. As it's not needed anyways, just remove it.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:31:01 -06:00
Jochen Friedrich d0a02a06bc [POWERPC] 8xx: Rename m8xx_pic_init to mpc8xx_pics_init
m8xx_pic_init calls both mpc8xx_pic_init and cpm_pic_init. Renaming the
function to use the same name space as the rest of the mpc8xx
specific funtions and to be more meaningful.

m8xx_pic_init is declared in ppc8xx_pic.h but defined nowhere in the ppc
tree. Remove it.

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:31:00 -06:00
Paul Gortmaker a43414ccb4 [POWERPC] 83xx: Add support for Wind River SBC834x boards
This adds the basic support for the Wind River SBC834x boards.  The
SBC8349 is more common, although it should work on the SBC8347 board
as well.  Support is heavily based on the existing MPC834x_MDS code.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:30:54 -06:00
Paul Gortmaker 0e0fffe887 [POWERPC] 85xx: Add basic support for Wind River SBC8548 board
This adds the basic support for the Wind River SBC8548 board, implemented
as powerpc.  It closely follows the implementation of the MPC8548CDS.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:30:50 -06:00
Paul Gortmaker b8b3caf3b4 [POWERPC] CPM2: Make support for the CPM2 optional on 8560 based boards
Currently there is no way to disable the CPM2 support.  Some boards,
like the SBC8560 have their own external UART and don't have any direct
dependencies on the CPM for a serial console or anything else.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:30:48 -06:00
Paul Gortmaker 2c19806122 [POWERPC] 85xx: Add support for Wind River SBC8560 in arch/powerpc
This adds support for the Wind River SBC8560 board, implemented as
powerpc.  It closely follows the implementation of the MPC8560ADS.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:30:46 -06:00
Grant Likely ca956f0ea8 [POWERPC] 82xx and embedded6xx: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-28 08:30:41 -06:00
Kumar Gala 0052bc5d5c [POWERPC] 85xx: Port TQM85xx boards over from arch/ppc
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-27 14:10:37 -06:00
Kumar Gala 77e03a2241 [POWERPC] 85xx: Port STX GP3 board over from arch/ppc
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-27 14:10:36 -06:00
Grant Likely c8004a2818 [POWERPC] Add common clock setting routine mpc52xx_psc_set_clkdiv()
PSC drivers should not access the CDM registers directly.  Instead provide
a common routine for setting the PSC clock parameters with the required
locking.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-26 15:32:18 -07:00
Grant Likely 66ffbe490b [POWERPC] mpc5200: normalize compatible property bindings
Update MPC5200 drivers to also look for compatible properties in the
form "fsl,mpc5200-*" to better conform to open firmware generic names
recommended practice as published here:

http://www.openfirmware.org/1275/practice/gnames/gnamv14a.html

This patch should *not* break compatibility with older device trees
which do not use the 'fsl,' prefix.  The drivers will still bind against
the older names also.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-26 15:26:01 -07:00
Grant Likely 82e30140ff [POWERPC] mpc52xx: clean up Kconfig
Put all the mpc5200 board config option behind a menu item to get them
out of the top level of the platform support list

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-26 14:06:01 -07:00
Paul Mackerras 75e06e2d7d Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx 2008-01-26 15:30:35 +11:00
Gautham R Shenoy 86ef5c9a8e cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()
Replace all lock_cpu_hotplug/unlock_cpu_hotplug from the kernel and use
get_online_cpus and put_online_cpus instead as it highlights the
refcount semantics in these operations.

The new API guarantees protection against the cpu-hotplug operation, but
it doesn't guarantee serialized access to any of the local data
structures. Hence the changes needs to be reviewed.

In case of pseries_add_processor/pseries_remove_processor, use
cpu_maps_update_begin()/cpu_maps_update_done() as we're modifying the
cpu_present_map there.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-01-25 21:08:02 +01:00
Sean MacLennan f9bdedb2c5 [POWERPC] 4xx: PIKA Warp base platform
Add the base platform support for the PIKA Warp boards.

Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-25 07:09:42 -06:00
David Gibson 22258fa40e [POWERPC] Enable RTC for Ebony and Walnut (v2)
This patch extends the Ebony and Walnut platform code to instantiate
the existing ds1742 RTC class driver for the DS1743 RTC/NVRAM chip
found on both those boards.  The patch uses a helper function to scan
the device tree and instantiate the appropriate platform_device based
on it, so it should be easy to extend for other boards which have mmio
mapped RTC chips.

Along with this, the device tree binding for the ds1743 chips is
tweaked, based on the existing DS1385 OF binding found at:
	http://playground.sun.com/1275/proposals/Closed/Remanded/Accepted/346-it.txt
Although that document covers the NVRAM portion of the chip, whereas
here we're interested in the RTC portion, so it's not entirely clear
if that's a good model.

This implements only RTC class driver support - that is /dev/rtc0, not
/dev/rtc, and the low-level get/set time callbacks remain
unimplemented.  That means in order to get at the clock you will
either need a modified version of hwclock which will look at
/dev/rtc0, or you'll need to configure udev to symlink rtc0 to rtc.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-25 07:07:26 -06:00
Olaf Hering 5bc977867f [POWERPC] Autodetect serial console on pegasos2
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:55 +11:00
Olaf Hering 092ca5bd61 [POWERPC] Revert chrp_pci_fixup_vt8231_ata devinit to fix libata on pegasos
Commit 6d98bda79b changed the init order
for chrp_pci_fixup_vt8231_ata().

It can not work anymore because either the irq is not yet set to 14 or
pci_get_device() returns nothing.  At least the printk() in
chrp_pci_fixup_vt8231_ata() does not trigger anymore.
pata_via works again on Pegasos with the change below.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:55 +11:00
Michael Ellerman 3ca6644e5c [POWERPC] Make IOMMU code safe for > 132 GB of memory
Currently the IOMMU code allocates one page for the segment table, that
isn't safe if we have more than 132 GB of RAM.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:54 +11:00
Michael Ellerman 15c60cc472 [POWERPC] Have celleb use its own dma_direct_offset variable
Rather than using the global variable, have celleb use its own
variable to store the direct DMA offset.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:54 +11:00
Michael Ellerman f5d67bd5ec [POWERPC] Have cell use its own dma_direct_offset variable
Rather than using the global variable, have cell use its own variable
to store the direct DMA offset.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:54 +11:00
Michael Ellerman 450d87eaeb [POWERPC] Add celleb_dma_dev_setup()
Celleb always uses dma_direct_ops, and sets dma_direct_offset, so it
too should set dma_data to dma_direct_offset.

Currently there's no pci_dma_dev_setup() routine for Celleb so add one.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:54 +11:00
Michael Ellerman 110f95c9f0 [POWERPC] Set archdata.dma_data for direct DMA in cell_dma_dev_setup()
Store the direct_dma_offset in each device's dma_data in the case
where we're using the direct DMA ops.

We need to make sure we setup the ppc_md.pci_dma_dev_setup() callback
if we're using a non-zero offset.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:53 +11:00
Geoff Levand a628df1e9d [POWERPC] PS3: Remove lpar address workaround
Remove the PS3 workaround needed to support sparsemem SPU mappings.
The SPU mappings no longer use sparsemem, so this workaround is no
longer needed.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:53 +11:00
Takashi Yamamoto 781749a46b [POWERPC] PS3: Add logical performance monitor driver support
Add PS3 logical performance monitor (lpm) device driver.

The PS3's LV1 hypervisor provides a Logical Performance Monitor that
abstracts the Cell processor's performance monitor features for use
by guest operating systems.

Signed-off-by: Takashi Yamamoto <TakashiA.Yamamoto@jp.sony.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:53 +11:00
Geoff Levand ed7570022a [POWERPC] PS3: Add logical performance monitor device support
Add PS3 logical performance monitor device support to the
PS3 system-bus and platform device registration routines.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:52 +11:00
Takashi Yamamoto c2b16e1c10 [POWERPC] PS3: Add logical performance monitor repository routines
Add repository routines for the PS3 Logical Performance Monitor.

Signed-off-by: Takashi Yamamoto <TakashiA.Yamamoto@jp.sony.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:52 +11:00
Geert Uytterhoeven 720c9133ff [POWERPC] PS3: Checkpatch cleanups for arch/powerpc/platforms/ps3/repository.c
Cleanup coding errors in arch/powerpc/platforms/ps3/repository.c as
reported by sparse and checkpatch.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:52 +11:00
Geert Uytterhoeven ad7d8193e4 [POWERPC] PS3: Refactor ps3_repository_find_device()
PS3: Refactor ps3_repository_find_device() to use the existing
ps3_repository_read_bus_id() routine.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:52 +11:00
Geert Uytterhoeven 0a46893739 [POWERPC] PS3: Kill unused ps3_repository_bump_device()
PS3: Kill unused routine ps3_repository_bump_device().

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:51 +11:00
Geert Uytterhoeven 972b1f040c [POWERPC] PS3: Add repository polling loop to work around timing bug
PS3: Add repository polling loop to work around timing bug

On some firmware versions (e.g. 1.90), the storage device may not show up
in the repository immediately after receiving the notification message.
Add a small polling loop to make sure we don't miss it.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:51 +11:00
Geert Uytterhoeven b4cb2941f8 [POWERPC] PS3: Use the HVs storage device notification mechanism properly
The PS3 hypervisor has a storage device notification mechanism to wait
until a storage device is ready.  Unfortunately the storage device
probing code used this mechanism in an incorrect way, needing a
polling loop and handling of devices that are not yet ready.

This change corrects this by:
  - First waiting for the reception of an asynchronous notification
    that a new storage device became ready,
  - Then looking up the storage device in the device repository.

On shutdown, the storage probe thread is stopped and the storage
notification device is closed using a reboot notifier.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:51 +11:00
Geert Uytterhoeven e06bcf3cc3 [POWERPC] PS3: Add ps3_repository_find_device_by_id()
The storage probe feature of the PS3 hypervisor returns device IDs.  Add
the corresponding repository routine ps3_repository_find_device_by_id()
which can be used to retrieve the device info from the repository.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:51 +11:00
Geert Uytterhoeven 034e0ab54b [POWERPC] PS3: Make bus_id and dev_id u64
Change the PS3 bus_id and dev_id from type unsigned int to u64.  These
IDs are 64-bit in the repository, and the special storage notification
device has a device ID of ULONG_MAX.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-25 22:52:51 +11:00
Kay Sievers af5ca3f4ec Driver core: change sysdev classes to use dynamic kobject names
All kobjects require a dynamically allocated name now. We no longer
need to keep track if the name is statically assigned, we can just
unconditionally free() all kobject names on cleanup.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24 20:40:40 -08:00
Greg Kroah-Hartman d76e15fb20 driver core: make /sys/power a kobject
/sys/power should not be a kset, that's overkill.  This patch renames it
to power_kset and fixes up all usages of it in the tree.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24 20:40:25 -08:00
Greg Kroah-Hartman 79393fc46e kobject: convert pseries/power.c to kobj_attr interface
This makes the code a bit simpler and and gets us one step closer to
deleting the deprecated subsys_attr code.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24 20:40:20 -08:00
Greg Kroah-Hartman 039a5dcd2f kset: convert /sys/power to use kset_create
Dynamically create the kset instead of declaring it statically.  We also
rename power_subsys to power_kset to catch all users of the variable and
we properly export it so that people don't have to guess that it really
is present in the system.

The pseries code is wierd, why is it createing /sys/power if CONFIG_PM
is disabled?  Oh well, stupid big boxes ignoring config options...

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24 20:40:16 -08:00
Greg Kroah-Hartman 3514faca19 kobject: remove struct kobj_type from struct kset
We don't need a "default" ktype for a kset.  We should set this
explicitly every time for each kset.  This change is needed so that we
can make ksets dynamic, and cleans up one of the odd, undocumented
assumption that the kset/kobject/ktype model has.

This patch is based on a lot of help from Kay Sievers.

Nasty bug in the block code was found by Dave Young
<hidave.darkstar@gmail.com>

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-24 20:40:10 -08:00
Paul Mackerras dcb571be20 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into for-2.6.25 2008-01-24 15:29:14 +11:00
Jon Loeliger 3490cba56f [POWERPC] Add initial iomega StorCenter board port.
Use cuImage bootwrapper until U-Boot port is completed.
Derived heavily from Linkstation port.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Andy Wilcox <andy@protium.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:54:36 -06:00
Jon Loeliger 1d59483aec [POWERPC] Add _nmask_and_or_msr() declartion to asm-powerpc/system.h
Prevents miscellaneous users from declaring it locally.

Signed-off-by: Jon Loeliger <jdl@freecale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:54:30 -06:00
Grant Likely 6869e4ad4b [POWERPC] 8xx: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:54:25 -06:00
Wade Farnsworth 15061d60a3 [POWERPC] 86xx: MPC8641 HPCN - call of_platform_bus_probe()
Call of_platform_bus_probe() on the MPC8641 HPCN, similar to what is
done for other platforms.

Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:35:02 -06:00
Scott Wood de7566bff3 [POWERPC] 8xx: adder875 - Fix flash bus-width and remove duplicate __initdata
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:56 -06:00
Scott Wood ff5ac76088 [POWERPC] 83xx: MPC8313e RBD add NAND to device tree
Add NAND to device tree, and call of_platform_bus_probe().

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:46 -06:00
Scott Wood 0dde1a1df9 [POWERPC] 82xx: Embedded Planet EP8248E support
This board is also resold by Freescale under the names
"QUICCStart MPC8248 Evaluation System" and "CWH-PPC-8248N-VE".

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:43 -06:00
Scott Wood b09c16440e [POWERPC] 8xx: Analogue & Micro Adder875 board support.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:40 -06:00
Timur Tabi c7d24a2dd0 [POWERPC] Update MPC8610 HPCD to support audio drivers
Update the MPC8610 HPCD files to support the audio driver.  Update
booting-without-of.txt with information on the SSI device.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:29 -06:00
John Rigby b0bbad6068 [POWERPC] Add IPIC Kconfig option
IPIC is not just for 83xx anymore so make it a separate config option.

Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:26 -06:00
Paul Gortmaker e5091842dc [POWERPC] 85xx: mpc85xx_ads: add in missing of_node_put()
Add in missing of_node_put() after cpm2_pic_init(). This and other coding
style cleanups as suggested by Stephen Rothwell.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:18 -06:00
Timur Tabi bc556ba940 [POWERPC] QE: Add ability to upload QE firmware
Define the layout of a binary blob that contains a QE firmware and instructions
on how to upload it.  Add function qe_upload_firmware() to parse the blob
and perform the actual upload.  Fully define 'struct rsp' in immap_qe.h to
include the actual RISC Special Registers.  Added description of a new
QE firmware node to booting-without-of.txt.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:34:06 -06:00
Anton Vorontsov 9b6d19dd1d [POWERPC] MPC8349E-mITX: introduce localbus and pata nodes
This patch adds localbus and pata nodes to use CF IDE interface
on MPC8349E-mITX boards.

Patch also adds code to probe localbus.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:33:08 -06:00
Li Yang 866b6ddd28 [POWERPC] 83xx: USB device tree cleanups
Remove device_type = "usb" for 83xx SoC USB controller

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:33:05 -06:00
Li Yang e10241d8a1 [POWERPC] 83xx: Add MPC837x USB platform support
Add chip specific and board specific initialization for MPC837x USB.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:33:03 -06:00
Kumar Gala 6392f1845b [POWERPC] 83xx: convert boards to use machine_device_initcall
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:32:39 -06:00
Kumar Gala 277982e2d8 [POWERPC] 85xx: convert boards to use machine_device_initcall
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-01-23 19:32:37 -06:00
Paul Mackerras 9156ad4833 Merge branch 'linux-2.6' 2008-01-24 10:07:21 +11:00
Marian Balakowicz 5b5820d08b [POWERPC] mpc5200: Add generic support for simple MPC5200 based boards
This patch adds support for 'mpc5200-simple-platform' compatible
boards which do not need a platform specific setup. Such boards
are supported assuming the following:

- GPIO pins are configured by the firmware,
- CDM configuration (clocking) is setup correctly by firmware,
- if the 'fsl,has-wdt' property is present in one of the
  gpt nodes, then it is safe to use such gpt to reset the board,
- PCI is supported if enabled in the kernel configuration
  and if there is a PCI bus node defined in the device tree.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-18 20:57:09 -07:00
Grant Likely 75ca399e82 [POWERPC] mpc5200: eliminate mpc52xx_*_map_*() functions.
mpc5200 platform code defines a bunch of map functions which duplicate the
functionality of of_iomap().  Remove them and use of_iomap() instead.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-18 09:30:37 -07:00
Marian Balakowicz f584bc65ca [POWERPC] mpc5200: Add common mpc52xx_setup_pci() routine
This patch moves a generic pci init code from lite5200
platform file to a common mpc52xx_setup_pci() routine
and adds additional compatibility property verification.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-18 09:30:07 -07:00
Marian Balakowicz a6f024bbbe [POWERPC] mpc5200: Add 'fsl,lpb' bus type for localplus bus
Define MPC52xx specific device id list, add new
'fsl,lpb' compatible id for LocalPlus Bus.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-18 09:28:56 -07:00
Paul Mackerras 52920df4aa Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/olof/pasemi into for-2.6.25 2008-01-17 16:17:58 +11:00
Jon Loeliger 0173d422aa [POWERPC] Use <linux/of_{platform, device}.h> and not <asm/...> variants.
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:58:57 +11:00
Grant Likely e25c47ffa9 [POWERPC] cell: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:15 +11:00
Grant Likely d518b71784 [POWERPC] powermac: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:14 +11:00
Stephen Rothwell acaa617620 [POWERPC] eeh.c: Use for_each_child_of_node
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:07 +11:00
Stephen Rothwell 885b86e4e7 [POWERPC] iSeries: eliminate pci_dn bussubno
xlate_iomm_address() really wants the ds_addr to pass to the HV, so store
that value (instead of the BAR number) when we allocate the device bars.
This is not a fast path, so we can look up the device_node property
there instead of using the bussubno field of the pci_dn.

The other user of iseries_ds_addr() was already scanning the device tree,
so looking up a property will not slow it down any more.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:05 +11:00
Stephen Rothwell b6ed42a794 [POWERPC] The pci_dn pcidev is only used by EEH
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:57:01 +11:00
Cyrill Gorcunov dc2e425857 [POWERPC] Use for_each macros in arch/powerpc/platforms/powermac
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:56:57 +11:00
Grant Likely 283029d16a [POWERPC] Add of_find_matching_node() helper function
Similar to of_find_compatible_node(), of_find_matching_node() and
for_each_matching_node() allow you to iterate over the device tree
looking for specific nodes, except that they take of_device_id
tables instead of strings.

This also moves of_match_node() from driver/of/device.c to
driver/of/base.c to colocate it with the of_find_matching_node which
depends on it.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-17 14:53:22 +11:00
Olof Johansson 9cd55be4d2 [POWERPC] pasemi: Move electra-ide to pata_of_platform
Move electra-ide glue over to the new pata_of_platform framework, and
add the quirks needed to that driver.

Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-15 10:26:45 -06:00
Paul Mackerras dfbe0d3b6b [POWERPC] Fix boot failure on POWER6
Commit 473980a993 added a call to clear
the SLB shadow buffer before registering it.  Unfortunately this means
that we clear out the entries that slb_initialize has previously set in
there.  On POWER6, the hypervisor uses the SLB shadow buffer when doing
partition switches, and that means that after the next partition switch,
each non-boot CPU has no SLB entries to map the kernel text and data,
which causes it to crash.

This fixes it by reverting most of 473980a9 and instead clearing the
3rd entry explicitly in slb_initialize.  This fixes the problem that
473980a9 was trying to solve, but without breaking POWER6.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-15 17:30:58 +11:00
Josh Boyer 98c31c1d6c Merge branch 'virtex-for-2.6.25' of git://git.secretlab.ca/git/linux-2.6-virtex into for-2.6.25 2008-01-11 07:02:57 -06:00
Michael Neuling 473980a993 [POWERPC] Fix CPU hotplug when using the SLB shadow buffer
Before we register the SLB shadow buffer, we need to invalidate the
entries in the buffer, otherwise we can end up stale entries from when
we previously offlined the CPU.

This does this invalidate as well as unregistering the buffer with
PHYP before we offline the cpu.  Tested and fixes crashes seen on
970MP (thanks to tonyb) and POWER5.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-11 16:33:55 +11:00
Stephen Neuendorffer faa6511109 [POWERPC] Xilinx: Add correct compatible list for device tree bus bindings.
Includes both flavors of plb, opb, dcr, and a pseudo 'compound' bus
for representing compound peripherals containing more than one logical
device.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-01-09 07:56:29 -07:00
Grant Likely bdddec454c [POWERPC] pasemi: Use machine_*_initcall() hooks in platform code
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-02 14:08:42 -06:00
Olof Johansson f0d4577c4d [POWERPC] pasemi: Fix NMI handling check
The logic that checks to see if a machine check is caused by an NMI will
always match when NMI hasn't been initialized, since the mpic routine
will return NO_IRQ (and that's what the nmi_virq value is as well).

Signed-off-by: Olof Johansson <olof@lixom.net>
2008-01-02 12:40:29 -06:00
Grant Likely 1fe1b95d86 [POWERPC] 4xx: typo in calling machine_device_initcall() for Sequoia board
Fix an obvious typo.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-01-02 11:38:15 -06:00
Paul Mackerras a5a971129c [POWERPC] Fix build failure on Cell when CONFIG_SPU_FS=y
Commit aed3a8c9bb introduced a
definition of notify_spus_active in .../cell/spu_syscalls.c, and
another definition under #ifndef MODULE in .../cell/spufs/sched.c.
The latter is not necessary and causes the build to fail when
CONFIG_SPU_FS=y, so this removes it.  It also removes the export
of do_notify_spus_active, which is unnecessary.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
2008-01-02 15:56:30 +11:00
Paul Mackerras 4f43143f9f Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/pasemi 2007-12-31 13:54:13 +11:00
Olof Johansson d87bf3bed7 [POWERPC] pasemi: Distribute interrupts evenly across cpus
By default the OpenPIC on PWRficient will bias to one core (since that
will improve changes of the other core being able to stay idle/powered
down). However, this conflicts with most irq load balancing schemes,
since setting an interrupt to be delivered to either core doesn't really
result in the load being shared. It also doesn't work well with the
soft irq disable feature of PPC, since EE will stay on until the first
interrupt is taken while soft disabled.

Set the gconf0 config bit that enables even distribution of interrupts
among the two cores.

Signed-off-by: Olof Johansson <olof@lixom.net>
2007-12-28 09:22:25 -06:00
Olof Johansson f365355e65 [POWERPC] pasemi: Implement NMI support
Some PWRficient-based boards have a NMI button that's wired up to a GPIO
as interrupt source. By configuring the openpic accordingly, these get
delivered as a machine check with high priority, instead of as an external
interrupt.

The device tree contains a property "nmi-source" in the openpic node
for these systems, and it's the (hwirq) source for the input.

Also, for these interrupts, the IACK is read from another register than
the regular (MCACK instead), but they are EOI'd as usual. So implement
said function for the mpic driver.

Finally, move a couple of external function defines to include/ instead
of local under sysdev. Being able to mask/unmask and eoi directly saves
us from setting up a dummy irq handler that will never be called.

Signed-off-by: Olof Johansson <olof@lixom.net>
2007-12-28 09:22:24 -06:00
Geoff Levand ec5d2dfe72 [POWERPC] PS3: Fix printing of os-area magic numbers
Fix a bug in the printing of the os-area magic numbers which assumed
that magic numbers were zero terminated strings.  The magic numbers
are represented in memory as integers.  If the os-area sections are
not initialized correctly they could contained random data that would
be printed to the display.  Also unify the handling of header and db
magic numbers and make both of type array of u8.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-28 15:07:52 +11:00
Bob Nelson aed3a8c9bb [POWERPC] Oprofile: Remove dependency on spufs module
This removes an OProfile dependency on the spufs module.  This
dependency was causing a problem for multiplatform systems that are
built with support for Oprofile on Cell but try to load the oprofile
module on a non-Cell system.

Signed-off-by: Bob Nelson <rrnelson@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-28 15:07:52 +11:00
Josh Boyer 3f8c5c3b4d [POWERPC] 4xx: Use machine_device_initcall for bus probe
Some machine_xx_initcall macros were recently added that check for the machine
type before calling the function.  This converts the 4xx platforms to use those
for bus probing.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-24 10:42:02 -06:00
Josh Boyer 9e0fd5f06c [POWERPC] Remove unneeded variable declarations from mpc837x_mds
Remove the declarations for isa_io_base and isa_mem_base as they are declared
in pci-common.c now.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-24 09:01:11 -06:00
Josh Boyer 8cb34d291d [POWERPC] 4xx: Mark of_bus structures as __initdata
Mark the of_device_id structures used to probe the various busses on 4xx
as __initdata.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-24 08:40:31 -06:00
Josh Boyer 9901162370 [POWERPC] 4xx: Update Kilauea, Rainier, and Walnut defconfigs
Enable PCI support for these eval boards among other things.  Also selects
PCI for Rainier in the Kconfig file.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:41:54 -06:00
Stefan Roese be1e0e98cc [POWERPC] 4xx: Add AMCC Makalu board support to platforms/40x
This patch adds basic support for the AMCC Makalu board to arch/powerpc.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:36:54 -06:00
Stefan Roese 151161c6e2 [POWERPC] 4xx: Add Kilauea PCIe support to dts and Kconfig
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:31:32 -06:00
Stefan Roese cdb159af9d [POWERPC] 4xx: Add 405EX CPU type needed for EMAC support on Kilauea
For EMAC support, 405EX needs to be defined to enable the corresponding
EMAC features (IBM_NEW_EMAC_EMAC4, etc.).

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:31:22 -06:00
Josh Boyer 4922566f03 [POWERPC] 4xx: libfdt and pci fixes for Rainier
Update the Rainier wrapper for the libfdt merge and add the pci flags to the
platform file.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:28:40 -06:00
Josh Boyer af7baf9259 [POWERPC] 4xx: Include missing header
A small error caused a header file to be removed making sequoia support no
longer compile.  Fix it.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:28:24 -06:00
Valentine Barshak 6272175d2a [POWERPC] 4xx: 440GRx Rainier board support.
PowerPC 440GRx Rainier board support.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:23:18 -06:00
Benjamin Herrenschmidt 25c24f3dc7 [POWERPC] pci32: 4xx embedded platforms want to reassign all PCI resources
This makes 4xx embedded platforms re-assign all PCI resources as we
pretty much never care about what the various firmwares have done on
these, it's generally not compatible with the way the kernel will map
the bridges.

We still need to also enable bus renumbering on some of them, but I
will do that from a separate patch after I've fixed 4xx PCIe to handle
all bus numbers.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:18:59 -06:00
Benjamin Herrenschmidt 3de9c9cd22 [POWERPC] 4xx: Base support for 440SPe "Katmai" eval board
This adds base support for the Katmai board, including PCI-X and
PCI-Express (but no RTC, nvram, etc... yet).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:14:57 -06:00
Benjamin Herrenschmidt c3fc2de0fe [POWERPC] 4xx: Wire up PCI on Bamboo board
This adds the device-tree bits & call to ppc4xx_pci_find_bridges()
to make PCI work on the Bamboo board

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:13:41 -06:00
Hugh Blemings 6bbc547629 [POWERPC] 4xx: Base support for 440GX Taishan eval board
This patch adds base support for the AMCC Taishan 440GX evaluation
board.

Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:13:33 -06:00
Benjamin Herrenschmidt 379865d63c [POWERPC] 4xx: Add PCI to Walnut platform
This wires up the 4xx PCI support & device-tree bits for the
405GP based Walnut platform.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:13:22 -06:00
Benjamin Herrenschmidt 619740384c [POWERPC] 4xx: EP405 boards support for arch/powerpc
Brings EP405 support to arch/powerpc. The IRQ routing for the CPLD
comes from a device-tree property, PCI is working to the point where
I can see the video card, USB device, and south bridge.

This should work with both EP405 and EP405PC.

I've not totally figured out how IRQs are wired on this hardware
though, thus at this stage, expect only USB interrupts working,
pretty much the same as what arch/ppc did.

Also, the flash, nvram, rtc and temp control still have to be wired.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:13:14 -06:00
Benjamin Herrenschmidt 9dae8afdf2 [POWERPC] 4xx: Add early udbg support for 40x processors
This adds some basic real mode based early udbg support for 40x
in order to debug things more easily

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:13:03 -06:00
Benjamin Herrenschmidt 69c0785112 [POWERPC] 4xx: PCI support for Ebony board
This wires up the 4xx PCI support & device tree bits for
440GP based Ebony platform.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:12:52 -06:00
Benjamin Herrenschmidt 47c0bd1ae2 [POWERPC] Reworking machine check handling and Fix 440/440A
This adds a cputable function pointer for the CPU-side machine
check handling. The semantic is still the same as the old one,
the one in ppc_md. overrides the one in cputable, though
ultimately we'll want to change that so the CPU gets first.

This removes CONFIG_440A which was a problem for multiplatform
kernels and instead fixes up the IVOR at runtime from a setup_cpu
function. The "A" version of the machine check also tweaks the
regs->trap value to differenciate the 2 versions at the C level.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-12-23 13:11:59 -06:00
Paul Mackerras c2a7dcad9f Merge branch 'linux-2.6' 2007-12-21 22:21:08 +11:00
Stephen Rothwell 373a6da165 [POWERPC] Make non-PCI build work again
Maple and pasemi both require PCI as does CONFIG_OF_PLATFORM_PCI.
The default setting of CONFIG_ISA_DMA_API is set to match the protection
around the relevant routines in asm/dma.h.

I also had to remove the PMAC platform from the combined build.  The
precis is that to build a 64 bit kernel with no PCI, you can only include
pSeries and iSeries.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 22:14:08 +11:00
Jeremy Kerr cbea92383d [POWERPC] spufs: Don't leak kernel stack through an empty {i,m}box_info read
Based on an original patch from Arnd Bergmann
<arnd.bergmann@de.ibm.com>

If there's no entry in the mailbox, then a read on the _info file will
return data from an uninitialised variable.

This change returns EOF if there's no mailbox info available instead.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:22 +11:00
Andre Detsch 18789fb1c3 [POWERPC] spufs: DMA Restart after SIGSEGV
This fixes the behavior of spufs when a spu tries a DMA operation
based on a wrong / unavailable address.

Instead of just generating a SIGBUS signal, spufs now
generates a SIGSEGV signal and restarts the problematic DMA operation
after the execution of the application's signal handler.  This allows
applications to employ user-level paging systems.

Although the restart_dma function is called before the application's
signal handler, the operation is not actually performed at this time,
since the spu context is already stopped.  The operation only takes
place when spu_run is restarted (which happens automatically).

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:21 +11:00
Aegis Lin 90608a2928 [POWERPC] spufs: Use separate timer for /proc/spu_loadavg calculation
The original spusched_timer was designed to take effect only when
a context is waiting in the runqueue.

This change adds an additional lower-freq timer has been added to
purely handle the spu_load updates. The new timer will be triggered
per LOAD_FREQ ticks.

Signed-off-by: Aegis Lin <aegislin@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:21 +11:00
Christoph Hellwig c9101bdb1b [POWERPC] spufs: make state_mutex interruptible
Make most places that use spu_acquire/spu_acquire_saved interruptible,
this allows getting out of the spufs code when e.g. pressing ctrl+c.
There are a few places where we get called e.g. from spufs teardown
routines were we can't simply err out so these are left with a comment.
For now I've also not touched the poll routines because it's open what
libspe would expect in terms of interrupted system calls.

Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:21 +11:00
Christoph Hellwig 197b1a8263 [POWERPC] spufs: add enchanced simple attr macros
The simple attr macros currently used by spufs can't deal with the
handlers returning errors, which is required to make the state_mutex
interruptible.  This adds a local copy that allows for an error
return from the get/set handlers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:21 +11:00
Luke Browning e65c2f6fce [POWERPC] spufs: decouple spu scheduler from spufs_spu_run (asynchronous scheduling)
Change spufs_spu_run so that the context is queued directly to the
scheduler and the controlling thread advances directly to spufs_wait()
for spe errors and exceptions.

nosched contexts are treated the same as before.

Fixes from Christoph Hellwig <hch@lst.de>

Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:21 +11:00
Masato Noguchi 9476141c18 [POWERPC] spufs: don't set reserved bits in spu interrupt status
This changes the spu context switch code to not write to reserved bits
of spu interrupt status register.
The architecture book says the reserved fields should be set to zero.

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:20 +11:00
Luke Browning b192541b39 [POWERPC] spufs: spu_find_victim may choose wrong victim
Need to re-check priority after dropping lock.  Otherwise, a
more favored context may be preempted.

Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:20 +11:00
Luke Browning 91569531d1 [POWERPC] spufs: reorganize spu_run_init
This cleans up spu_run_init so that it does all of the spu
initialization for spufs_run_spu.  It initializes the spu context as
much as possible before it activates the spu and writes the runcntl
register.

Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:20 +11:00
Jeremy Kerr d6ad39bc53 [POWERPC] spufs: rework class 0 and 1 interrupt handling
Based on original patches from
 Arnd Bergmann <arnd.bergman@de.ibm.com>; and
 Luke Browning <lukebr@linux.vnet.ibm.com>

Currently, spu contexts need to be loaded to the SPU in order to take
class 0 and class 1 exceptions.

This change makes the actual interrupt-handlers much simpler (ie,
set the exception information in the context save area), and defers the
handling code to the spufs_handle_class[01] functions, called from
spufs_run_spu.

This should improve the concurrency of the spu scheduling leading to
greater SPU utilization when SPUs are overcommited.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:20 +11:00
Jeremy Kerr 8af30675c3 [POWERPC] spufs: use #defines for SPU class [012] exception status
Add a few #defines for the class 0, 1 and 2 interrupt status bits, and
use them instead of magic numbers when we're setting or checking for
these interrupts.

Also, add a #define for the class 2 mailbox threshold interrupt mask.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:20 +11:00
Jeremy Kerr c40aa47104 [POWERPC] spufs: fix incorrect interrupt status clearing in backing mbox stat poll
When doing a poll on the mbox stat file of a swapped-out context, we
clear the class 0 interrupt status, rather than the class 2 interrupt
status.

This change corrects the poll operation to clear the correct interrupt.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:19 +11:00
Luke Browning cc210b3ec5 [POWERPC] spufs: add backing ops for privcntl register
This change encapsulates the spu_privcntl_RW register so that it can
be written through backing ops.  This is necessary so that spu contexts
can be initialized and queued to the scheduler in spufs_run_spu.

Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:19 +11:00
Arnd Bergmann 33bfd7a738 [POWERPC] spufs: block fault handlers in spu_acquire_runnable
This change disables the logic that faults-in spu contexts under the
covers from the page fault handler.  When a fault requires a runnable
context, the handler will block until the context is scheduled by
other means.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:19 +11:00
Jeremy Kerr 7cd58e4381 [POWERPC] spufs: move fault, lscsa_alloc and switch code to spufs module
Currently, part of the spufs code (switch.o, lscsa_alloc.o and fault.o)
is compiled directly into the kernel.

This change moves these components of spufs into the kernel.

The lscsa and switch objects are fairly straightforward to move in.

For the fault.o module, we split the fault-handling code into two
parts: a/p/p/c/spu_fault.c and a/p/p/c/spufs/fault.c. The former is for
the in-kernel spu_handle_mm_fault function, and we move the rest of the
fault-handling code into spufs.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:19 +11:00
Julio M. Merino Vidal 9b1d21f858 [POWERPC] spufs: fix typos in sched.c comments
Fix a few typos in the spufs scheduler comments

Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:46:18 +11:00
Masato Noguchi c25620d766 [POWERPC] cell: wrap master run control bit
Add platform specific SPU run control routines to the spufs.  The current
spufs implementation uses the SPU master run control bit (MFC_SR1[S]) to
control SPE execution, but the PS3 hypervisor does not support the use of
this feature.

This change adds the run control wrapper routies spu_enable_spu() and
spu_disable_spu().  The bare metal routines use the master run control
bit, and the PS3 specific routines use the priv2 run control register.

An outstanding enhancement for the PS3 would be to add a guard to check
for incorrect access to the spu problem state when the spu context is
disabled.  This check could be implemented with a flag added to the spu
context that would inhibit mapping problem state pages, and a routine
to unmap spu problem state pages.  When the spu is enabled with
ps3_enable_spu() the flag would be set allowing pages to be mapped,
and when the spu is disabled with ps3_disable_spu() the flag would be
cleared and mapped problem state pages would be unmapped.

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-21 19:45:05 +11:00
Julia Lawall 1fe58a875e [POWERPC] cell/cbe_regs.c: Add missing of_node_put
There should be an of_node_put when breaking out of a loop that iterates
using for_each_node_by_type.

This was detected and fixed using the following semantic patch.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
identifier d;
type T;
expression e;
iterator for_each_node_by_type;
@@

T *d;
...
for_each_node_by_type(d,...)
  {... when != of_node_put(d)
       when != e = d
(
   return d;
|
+  of_node_put(d);
?  return ...;
)
...}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Christian Krafft <krafft@de.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Erb <djerb@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 17:13:51 +11:00
Julia Lawall af449c330e [POWERPC] arch/powerpc: Add missing of_node_put
There should be an of_node_put when breaking out of a loop that iterates
over calls to of_find_all_nodes, as this function does an of_node_get on
the value it returns.

This was fixed using the following semantic patch.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
identifier d;
expression e;
@@

T *d;
...
for (d = NULL; (d = of_find_all_nodes(d)) != NULL; )
 {... when != of_node_put(d)
      when != e = d
(
   return d;
|
+  of_node_put(d);
?  return ...;
)
...}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 17:13:51 +11:00
Lucas Woods 05ead01554 [POWERPC] arch/powerpc: Remove duplicate includes
Signed-off-by: Lucas Woods <woodzy@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 17:13:50 +11:00
Cyrill Gorcunov 9ac71d0039 [POWERPC] CHRP: Fix possible NULL pointer dereference
This fixes a possible NULL pointer dereference inside of strncmp() if
of_get_property() fails.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 17:13:34 +11:00
Benjamin Herrenschmidt d0264ce796 [POWERPC] Improve resource setup of PowerMac G5 HT bridge
The device node for the HT bridge on G5s doesn't contain useful ranges.

We used to give it a bunch of the known PCI space and then punch a "hole"
in it based on where the AGP or PCIe region was.  This reworks it to
use the actual register in the bridge that controls the decoding instead.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:14 +11:00
Benjamin Herrenschmidt 444532d44a [POWERPC] Enable self-view of the HT host bridge on PowerMac G5
This enables the PCI code to see the device that represents the
HT host bridge on the PowerMac G5.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:13 +11:00
Benjamin Herrenschmidt 295f83e7aa [POWERPC] Clear pci_probe_only on 64 bits PowerMac
It should now be safe to re-assign unassigned resources on 64 bits PowerMac
machines (G5s).  This clears pci_probe_only on those.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:12 +11:00
Benjamin Herrenschmidt bc0826cfb1 [POWERPC] Fixup powermac enable device hook
Powermac's use of the pcibios_enable_device_hook() got slightly
broken by the recent PCI merge in that it won't be called for
the "initial" case of assigning resources to a previously
unassigned device.  This was an abuse of that hook anyway, so
instead we now use a header quirk.

While at it, we move a #ifdef CONFIG_PPC32 to enclose more code
that is only ever used on 32 bits.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:12 +11:00
Benjamin Herrenschmidt 549beb9ba3 [POWERPC] Merge 32 and 64 bits pcibios_enable_device
This merge the two implementations, based on the previously
fixed up 32 bits one.  The pcibios_enable_device_hook in ppc_md
is now available for ppc64 use.  Also remove the new unused
"initial" parameter from it and fixup users.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:11 +11:00
Benjamin Herrenschmidt 50c9bc2fc8 [POWERPC] fix iSeries PCI resource management
The way iSeries manages PCI IO and Memory resources is a bit strange
and is based on overriding the content of those resources with home
cooked ones afterward.

This changes it a bit to better integrate with the new resource handling
so that the "virtual" tokens that iSeries replaces resources with are
done from the proper per-device fixup hook, and bridge resources are
set to enclose that token space.  This fixes various things such as
the output of /proc/iomem & ioports, among others.  This also fixes up
various boot messages as well.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:10 +11:00
Benjamin Herrenschmidt 3fd94c6b1a [POWERPC] Merge PCI resource allocation & assignment
The 32 bits PCI code now uses the generic code for assigning unassigned
resources and an algorithm similar to x86 for claiming existing ones.

This works far better than the 64 bits code which basically can only
claim existing ones (pci_probe_only=1) or would fall apart completely.

This merges them so that the new 32 bits implementation is used for both.

64 bits now gets the new PCI flags for controlling the behaviour, though
the old pci_probe_only global is still there for now to be cleared if you
want to.

I kept a pcibios_claim_one_bus() function mostly based on the old 64
bits code for use by the DLPAR hotplug. This will have to be cleaned
up, thought I hope it will work in the meantime.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:09 +11:00
Benjamin Herrenschmidt bf5e2ba28f [POWERPC] Merge PCI resource fixups
The PCI code in 32 and 64 bits fixes up resources differently.

32 bits uses a header quirk plus handles bridges in pcibios_fixup_bus()
while 64 bits does things in various places depending on whether you
are using OF probing, using PCI hotplug, etc...

This merges those by basically using the 32 bits approach for both,
with various tweaks to make 64 bits work with the new approach.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-12-20 16:18:09 +11:00