Commit Graph

15206 Commits

Author SHA1 Message Date
Domen Puncer
6f6682809b [POWERPC] clk.h interface for platforms
This provides an implementation of the <linux/clk.h> interface for
arch/powerpc using a set of function pointers in clk_functions.
Platforms that want to support this interface should fill
clk_functions and select CONFIG_PPC_CLOCK in Kconfig.

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 09:11:56 +10:00
Michael Ellerman
21ccdd31e9 [POWERPC] Inline u3msi_compose_msi_msg()
In the MPIC U3 MSI code, we call u3msi_compose_msi_msg() once for each MSI.
This is overkill, as the address is per pci device, not per MSI. So setup
the address once, and just set the data per MSI.

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>
2007-10-03 09:11:42 +10:00
Michael Ellerman
d385366a9b [POWERPC] Simplify rtas_change_msi() error semantics
Currently rtas_change_msi() returns either the error code from RTAS, or if
the RTAS call succeeded the number of irqs that were configured by RTAS.
This makes checking the return value more complicated than it needs to be.

Instead, have rtas_change_msi() check that the number of irqs configured by
RTAS is equal to what we requested - and return an error otherwise. This makes
the return semantics match the usual 0 for success, something else for error.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 09:11:39 +10:00
Michael Ellerman
fcbe8090a0 [POWERPC] Simplify error logic in rtas_setup_msi_irqs()
rtas_setup_msi_irqs() doesn't need to call teardown() itself, the
generic code will do this for us as long as we return a non-zero
value.

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>
2007-10-03 09:11:35 +10:00
Michael Ellerman
d9303d662f [POWERPC] Simplify error logic in u3msi_setup_msi_irqs()
u3msi_setup_msi_irqs() doesn't need to call teardown() itself,
the generic code will do this for us as long as we return a non
zero value.

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>
2007-10-03 09:11:32 +10:00
Michael Ellerman
db220b234d [POWERPC] Make sure to of_node_get() the result of pci_device_to_OF_node()
pci_device_to_OF_node() returns the device node attached to a PCI device,
but doesn't actually grab a reference - we need to do it ourselves.

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>
2007-10-03 09:11:29 +10:00
Arnd Bergmann
a35e370cfd [POWERPC] Move embedded6xx into multiplatform
The various embedded 6xx systems can easily coexist in one kernel
together with the other 6xx based systems, so there is no strict
reason to keep them separate.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-03 09:11:25 +10:00
Linas Vepstas
a7fb7ea76e [POWERPC] pseries: device node status can be "ok" or "okay"
It seems that some versions of firmware will report a device
node status as the string "okay". As we are not expecting this
string, the device node will be ignored by the EEH subsystem.
Which means EEH will not be enabled.

When EEH is not enabled, PCI errors will be converted into
Machine Check exceptions, and we'll have a very unhappy system.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-02 22:09:56 +10:00
Emil Medve
576e393e74 [POWERPC] Fix build errors when BLOCK=n
These are the symptom error messages:

  CC      arch/powerpc/kernel/setup_32.o
In file included from include/linux/blkdev.h:17,
                 from include/linux/ide.h:13,
                 from arch/powerpc/kernel/setup_32.c:13:
include/linux/bsg.h:67: warning: 'struct request_queue' declared inside parameter list
include/linux/bsg.h:67: warning: its scope is only this definition or declaration, which is probably not what you want
include/linux/bsg.h:71: warning: 'struct request_queue' declared inside parameter list
In file included from arch/powerpc/kernel/setup_32.c:13:
include/linux/ide.h:857: error: field 'wrq' has incomplete type

  CC      arch/powerpc/kernel/ppc_ksyms.o
In file included from include/linux/blkdev.h:17,
                 from include/linux/ide.h:13,
                 from arch/powerpc/kernel/ppc_ksyms.c:15:
include/linux/bsg.h:67: warning: 'struct request_queue' declared inside parameter list
include/linux/bsg.h:67: warning: its scope is only this definition or declaration, which is probably not what you want
include/linux/bsg.h:71: warning: 'struct request_queue' declared inside parameter list
In file included from arch/powerpc/kernel/ppc_ksyms.c:15:
include/linux/ide.h:857: error: field 'wrq' has incomplete type

The fix tries to use the smallest scope CONFIG_* symbols that will fix
the build problem.  In this case <linux/ide.h> needs to be included
only if IDE=y or IDE=m were selected.  Also, ppc_ide_md is needed only
if BLK_DEV_IDE=y or BLK_DEV_IDE=m

Moved the EXPORT_SYMBOL(ppc_ide_md) from ppc_ksysms.c next to its
declaration in setup_32.c which made <linux/ide.h> not needed. With
<linux/ide.h> gone from ppc_ksyms.c, <asm/cacheflush.h> is needed to
address the following warnings and errors:

  CC      arch/powerpc/kernel/ppc_ksyms.o
arch/powerpc/kernel/ppc_ksyms.c:122: error: '__flush_icache_range' undeclared here (not in a function)
arch/powerpc/kernel/ppc_ksyms.c:122: warning: type defaults to 'int' in declaration of '__flush_icache_range'
arch/powerpc/kernel/ppc_ksyms.c:123: error: 'flush_dcache_range' undeclared here (not in a function)
arch/powerpc/kernel/ppc_ksyms.c:123: warning: type defaults to 'int' in declaration of 'flush_dcache_range'

Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Satyam Sharma
8fd7675c09 [POWERPC] Avoid pointless WARN_ON(irqs_disabled()) from panic codepath
> ------------[ cut here ]------------
> Badness at arch/powerpc/kernel/smp.c:202

comes when smp_call_function_map() has been called with irqs disabled,
which is illegal. However, there is a special case, the panic() codepath,
when we do not want to warn about this -- warning at that time is pointless
anyway, and only serves to scroll away the *real* cause of the panic and
distracts from the real bug.

* So let's extract the WARN_ON() from smp_call_function_map() into all its
  callers -- smp_call_function() and smp_call_function_single()

* Also, introduce another caller of smp_call_function_map(), namely
  __smp_call_function() (and make smp_call_function() a wrapper over this)
  which does *not* warn about disabled irqs

* Use this __smp_call_function() from the panic codepath's smp_send_stop()

We also end having to move code of smp_send_stop() below the definition
of __smp_call_function().

Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Olof Johansson
17b5ee04c0 [POWERPC] Support setting affinity for U3/U4 MSI sources
Hook up affinity-setting for U3/U4 MSI interrupt sources.

Tested on Quad G5 with myri10ge.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Arnd Bergmann
3164cccdc0 [POWERPC] add Kconfig option for optimizing for cell
Since the PPE on cell is an in-order core, it suffers significantly
from wrong instruction scheduling.  This adds a Kconfig option that
enables passing -mtune=cell to gcc in order to generate object
code that runs well on cell.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Jeremy Kerr
fb8299ed31 [POWERPC] cell: Don't cast the result of of_get_property()
The cast to u32 * isn't required, of_get_property returns a void *.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Tony Breeds
408e83a682 [POWERPC] Convert define_machine(mpc885_ads) to C99 initializer syntax
Make the define_machine() block for mpc885_ads more greppable and
consistent with other examples in tree.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Grant Likely
85498ae87c [POWERPC] mpc5200: Add cuimage support for mpc5200 boards
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Grant Likely
ad25a4cca7 [POWERPC] mpc8349: Add linux,network-index to ethernet nodes in device tree
cuImage needs to know the logical index of the ethernet devices in order
to assign mac addresses.  This adds the needed properties.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
CC: Scott Wood <scottwood@freescale.com>
CC: Kumar Gala <galak@kernel.crashing.org>
CC: Timur Tabi <timur@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:22 +10:00
Meelis Roos
3e61576b2a [POWERPC] Fix ppc kernels after build-id addition
This patch fixes arch/ppc kernels, at least for prep subarch, after
build-id addition.  Without this, kernels were 3 times the size and
bootloader refused to load them.  Now they are back to normal again.

Tested only with Roland McGrath's "Use LDFLAGS_MODULE only for .ko
links" patch applied - boots and works fine.

Signed-off-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:21 +10:00
Robert P. J. Day
20b31b53ea [POWERPC] Prevent direct inclusion of <asm/rwsem.h>.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:21 +10:00
Dale Farnsworth
9b41fcb0eb [POWERPC] Add Marvell mv64x60 udbg putc/getc functions
Commit 69331af, "Fixes and cleanups for earlyprintk aka boot console",
resulted in printk output prior to the initialization of the mpsc
console driver not being printed.  That commit causes the mpsc's
CON_PRINTBUFFER flag to be cleared since udbg should have printed
the previous output.

I guess we can no longer ignore udbg. :)

This patch provides udbg_putc() and udbg_getc() functions for the
Marvell mv64x60 chips. These functions are enabled if an mv64x60
port is to be used as the console as determined from the device tree.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-22 14:49:21 +10:00
Valentine Barshak
bd0076cc33 [POWERPC] 4xx: Fix Sequoia MAL0 and EMAC dts entries.
According to PowerPC 440EPx documentation,
MAL0 is comprised of four channels (two transmit and two receive).
Each channel is dedicated to one of two EMAC cores.
This patch fixes Sequoia DTS MAL0 entry and EMAC entries,
assigning correct channel numbers to EMACs.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-20 07:37:14 -05:00
Valentine Barshak
e52f5677bf [POWERPC] 4xx: Fix Bamboo MAL0 dts entry.
According to PowerPC 440EP documentation,
MAL0 consists of 6 channels (4 transmit channels and 2 receive channels)
This patch fixes Bamboo DTS MAL0 "num-rx-chans" entry.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-20 07:37:03 -05:00
Valentine Barshak
472b5b43be [POWERPC] Add 64-bit resources support to pci_iomap
The patch adds support for the 64-bit resources to the PCI
iomap code.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-20 07:36:52 -05:00
Hollis Blanchard
70dea47da1 [POWERPC] 4xx: Implement udbg_getc() for 440
Implement udbg_getc() for 440, which fixes xmon input.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-19 21:13:17 -05:00
Josh Boyer
504ca43e5e [POWERPC] 4xx: Convert Seqouia flash mappings to new binding
A new binding for flash devices was recently introduced.  This updates the
Sequoia DTS to use the new binding and enabled MTD in the defconfig.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Stefan Roese <sr@denx.de>
2007-09-19 21:13:16 -05:00
Josh Boyer
bf07f32d43 [POWERPC] 4xx: Convert Walnut flash mappings to new binding
A new binding for flash devices was recently introduced.  This updates the
Walnut DTS to use the new binding.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
2007-09-19 21:13:16 -05:00
Josh Boyer
658e817019 [POWERPC] cuimage for Bamboo board
Add a cuboot wrapper for the Bamboo board.  Additionally, we enable MAC
address fixups for both cuboot and treeboot.

This also removes some obsoleted linker declarations that have been
moved into ops.h

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
2007-09-19 21:13:16 -05:00
Paul Mackerras
0ce49a3945 Merge branch 'linux-2.6' 2007-09-20 10:09:27 +10:00
Linus Torvalds
a88a8eff1e Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] cpu-bugs64.c: GCC 3.3 constraint workaround
  [MIPS] DEC: Initialise ioasic_ssr_lock
2007-09-19 11:45:32 -07:00
Linus Torvalds
f15f41383d 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] Fix timekeeping on PowerPC 601
  [POWERPC] Don't expose clock vDSO functions when CPU has no timebase
  [POWERPC] spusched: Fix null pointer dereference in find_victim
2007-09-19 11:38:25 -07:00
Linus Torvalds
dbe3ed1c07 x86-64: page faults from user mode are always user faults
Randy Dunlap noticed an interesting "crashme" behaviour on his dual
Prescott Xeon setup, where he gets page faults with the error code
having a zero "user" bit, but the register state points back to user
mode.

This may be a CPU microcode buglet triggered by some strange instruction
pattern that crashme generates, and loading a microcode update seems to
possibly have fixed it.

Regardless, we really should trust the register state more than the
error code, since it's really the register state that determines whether
we can actually send a signal, or whether we're in kernel mode and need
to oops/kill the process in the case of a page fault.

Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-19 11:37:14 -07:00
Maciej W. Rozycki
09abbcffb3 [MIPS] cpu-bugs64.c: GCC 3.3 constraint workaround
Add a workaround to address warnings generated on the "n" constraint by
GCC 3.3 and below.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-19 19:33:14 +01:00
Maciej W. Rozycki
6883599943 [MIPS] DEC: Initialise ioasic_ssr_lock
Fix the definition of the ioasic_ssr_lock spinlock to include a proper 
initialisation.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-09-19 19:33:14 +01:00
Jeff Dike
508a92741a uml: fix irqstack crash
This patch fixes a crash caused by an interrupt coming in when an IRQ stack
is being torn down.  When this happens, handle_signal will loop, setting up
the IRQ stack again because the tearing down had finished, and handling
whatever signals had come in.

However, to_irq_stack returns a mask of pending signals to be handled, plus
bit zero is set if the IRQ stack was already active, and thus shouldn't be
torn down.  This causes a problem because when handle_signal goes around
the loop, sig will be zero, and to_irq_stack will duly set bit zero in the
returned mask, faking handle_signal into believing that it shouldn't tear
down the IRQ stack and return thread_info pointers back to their original
values.

This will eventually cause a crash, as the IRQ stack thread_info will
continue pointing to the original task_struct and an interrupt will look
into it after it has been freed.

The fix is to stop passing a signal number into to_irq_stack.  Rather, the
pending signals mask is initialized beforehand with the bit for sig already
set.  References to sig in to_irq_stack can be replaced with references to
the mask.

[akpm@linux-foundation.org: use UL]
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-19 11:24:18 -07:00
Jeremy Fitzhardinge
389a3c0249 xen: don't bother trying to set cr4
Xen ignores all updates to cr4, and some versions will kill the domain if
you try to change its value.  Just ignore all changes.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-19 11:24:18 -07:00
Nicolas George
2c392a4f47 uml: use correct type in BLKGETSIZE ioctl
I found a type mismatch in UML that makes host block devices unusable as ubd
devices on x86_64 and other 64 bits systems (segfault of the mm subsystem):

In block/ioctl.c, the following lines show that the BLKGETSIZE ioctl expects
a pointer to a long:

	case BLKGETSIZE:
		if ((bdev->bd_inode->i_size >> 9) > ~0UL)
			return -EFBIG;
		return put_ulong(arg, bdev->bd_inode->i_size >> 9);

In arch/um/os-Linux/file.c, os_file_size calls it with an int.

The ioctl_list man page should be fixed as well.

Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-19 11:24:17 -07:00
Benjamin Herrenschmidt
c27da33969 [POWERPC] Fix timekeeping on PowerPC 601
Recent changes to the timekeeping code broke support for the PowerPC 601
processor which doesn't have the usual timebase facility but a slightly
different thing called (yuck) the RTC.

This fixes it, boot tested on an old 601 based PowerMac 7200.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:26:34 +10:00
Benjamin Herrenschmidt
7b5acbaac3 [POWERPC] Don't expose clock vDSO functions when CPU has no timebase
We forgot to remove the clock_gettime, clock_getres and get_tbfreq vDSO
calls on CPUs that have no timebase such as 601 or 403 (old CPUs that have
different mechanisms and for which the vDSO code will not work properly).
This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:26:34 +10:00
Christoph Hellwig
c0e7b4aa1c [POWERPC] spusched: Fix null pointer dereference in find_victim
find_victim can dereference a NULL pointer when iterating over the list
of victim spus because list_mutex only guarantees spu->ct to be stable,
but of course not to be non-NULL.

Also fix find_victim to not call spu_unbind_context without list_mutex
because that violates the above guarantee.

Signed-off-by: Christoph Hellwig <hch@lst.de>
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>
2007-09-19 15:26:29 +10:00
Stephen Rothwell
9e4859ef54 [POWERPC] FWNMI is only used on pSeries
This saves 4k on non pSeries builds (except for iSeries where it saves
almost 4k).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Stephen Rothwell
ee7a76da1e [POWERPC] Size swapper_pg_dir correctly
David Gibson pointed out that swapper_pg_dir actually need to be
PGD_TABLE_SIZE bytes long not PAGE_SIZE.  This actually saves 64k in
the bss for a kernel ppc64_defconfig built with CONFIG_PPC_64K_PAGES.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Stephen Rothwell
19a8d97d89 [POWERPC] Remove cmd_line from head*.S
It is just a C char array, so declare it thusly.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Stephen Rothwell
7b2c3c5b1d [POWERPC] Fix section mismatch in PCI code
Create a helper function (alloc_maybe_bootmem) that is marked __init_refok
to limit the chances of mistakenly referring to other __init routines.

WARNING: vmlinux.o(.text+0x2a9c4): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.update_dn_pci_info' and '.pci_dn_reconfig_notifier')
WARNING: vmlinux.o(.text+0x36430): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.mpic_msi_init_allocator' and '.find_ht_magic_addr')
WARNING: vmlinux.o(.text+0x5e804): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e8e8): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e968): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Domen Puncer
ee983079ce [POWERPC] MPC5200 low power mode
Low-power mode implementation for Lite5200b.
Some I/O registers are also saved here.

A recent U-Boot that supports this (lite5200b_PM_config) is needed.

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:25:34 +10:00
Michael Ellerman
104f0cc2dc [POWERPC] spufs: Add DEFINE_SPUFS_ATTRIBUTE()
This patch adds DEFINE_SPUFS_ATTRIBUTE(), a wrapper around
DEFINE_SIMPLE_ATTRIBUTE which does the specified locking for the get
routine for us.

Unfortunately we need two get routines (a locked and unlocked version) to
support the coredump code.  This hides one of those (the locked version)
inside the macro foo.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman
9e25ae6d91 [POWERPC] spufs: Respect RLIMIT_CORE in spu coredump code
Currently the spu coredump code doesn't respect the ulimit, it should.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman
7af1443a9d [POWERPC] spufs: Handle errors in SPU coredump code, and support coredump to a pipe
Rework spufs_coredump_extra_notes_write() to check for and return errors.

If we're coredumping to a pipe we can't trust file->f_pos, we need to
maintain the foffset value passed to us. The cleanest way to do this is
to have the low level write routine increment foffset when we've
successfully written.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman
e55014923e [POWERPC] spufs: Cleanup ELF coredump extra notes logic
To start with, arch_notes_size() etc. is a little too ambiguous a name for
my liking, so change the function names to be more explicit.

Calling through macros is ugly, especially with hidden parameters, so don't
do that, call the routines directly.

Use ARCH_HAVE_EXTRA_ELF_NOTES as the only flag, and based on it decide
whether we want the extern declarations or the empty versions.

Since we have empty routines, actually use them in the coredump code to
save a few #ifdefs.

We want to change the handling of foffset so that the write routine updates
foffset as it goes, instead of using file->f_pos (so that writing to a pipe
works).  So pass foffset to the write routine, and for now just set it to
file->f_pos at the end of writing.

It should also be possible for the write routine to fail, so change it to
return int and treat a non-zero return as failure.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman
48cad41f7e [POWERPC] spufs: Combine spufs_coredump_calls with spufs_calls
Because spufs might be built as a module, we can't have other parts of the
kernel calling directly into it, we need stub routines that check first if the
module is loaded.

Currently we have two structures which hold callbacks for these stubs, the
syscalls are in spufs_calls and the coredump calls are in spufs_coredump_calls.
In both cases the logic for registering/unregistering is essentially the same,
so we can simplify things by combining the two.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman
78810ff672 [POWERPC] spufs: Add contents of npc file to SPU coredumps
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:19 +10:00
Michael Ellerman
74de08bc10 [POWERPC] spufs: Internal __spufs_get_foo() routines should take a spu_context *
The SPUFS attribute get routines take a void * because the generic attribute
code doesn't know what sort of data it's passing around.

However our internal __spufs_get_foo() routines can take a spu_context *
directly, which saves plonking it in and out of a void * again.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-19 15:12:18 +10:00