Commit Graph

1328 Commits

Author SHA1 Message Date
Al Viro
8c42ec2c99 [POWERPC] maple/pci iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:41:02 +10:00
Al Viro
62034f0338 [POWERPC] powerpc oprofile __user annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:25:33 +10:00
Al Viro
ed2bfcd2de [POWERPC] cell spufs iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:25:33 +10:00
Al Viro
e45d6634e5 [POWERPC] NULL noise removal: spufs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:24:35 +10:00
Al Viro
054e51a44b [POWERPC] ppc math-emu needs -fno-builtin-fabs for math.c and fabs.c
... since they deal with internal function with that name.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:24:35 +10:00
Kim Phillips
8306e511d2 [POWERPC] update mpc8349_itx_defconfig and remove some debug settings
update mpc8349_itx_defconfig and turn off some debug settings

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:24:35 +10:00
Anton Blanchard
0ddd3e7d07 [POWERPC] Always call cede in pseries dedicated idle loop
The smt_snooze_delay logic changed a bit when the idle loops were
consolidated. A value of 0 used to mean we always polled, now it means
we always sleep. Instead of restoring the old behaviour, lets put a
reasonable default in smt_snooze_delay. This means we spin for a bit
(in case an external interrupt comes in) and then sleep.

Also the pseries dedicated idle loop currently does not cede both
threads in an SMT pair. The hypervisor wants us to call in so it can
power manage, so lets do that.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:24:34 +10:00
Michael Ellerman
e12514650b [POWERPC] Fix loop logic in irq_alloc_virt()
There's a bug in irq_alloc_virt() if it's asked for more than 1 interrupt,
if it can't find a slot it might look past the end of the irq_map.
To be clear: the bug is that the continue affects the inner for loop,
not the outer one, so i becomes j + 1 and then we continue the inner
loop without checking if i is still <= limit.

This fixes it. No one in the kernel actually calls this with count >
1, so it's not critical.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:24:34 +10:00
David Woodhouse
94983cb788 [POWERPC] Fix PPC32 SECCOMP, unexport do_syscall_trace_{enter,leave}
The secure_computing() call which automatically aborts a process if it
tries to execute a syscall it shouldn't is much more useful if we
actually do it _before_ the syscall, rather than afterwards. PPC64 got
this right, but the original incorrect behaviour inherited from arch/ppc
was preserved by ifdefs. Make it the same on PPC32 too.

Also, I see no need to export do_syscall_trace_{leave,enter} on ppc32 --
they were only exported because the old do_syscall_trace() (which they
replaced) used to be.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:24:34 +10:00
David Woodhouse
4b9c876a81 [POWERPC] Fix audit syscall success/failure reporting on PowerPC
Due to my stupidity, we were checking for the wrong bit in CCR when
attempting to determine whether a syscall succeeded or not. Remedy the
symptom, if not the cause.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-26 15:24:34 +10:00
Al Viro
13b5aeccc4 [PATCH] more fallout from get_property returning pointer to const
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-23 11:34:43 -07:00
Linas Vepstas
e102926385 [POWERPC] EEH: Power4 systems sometimes need multiple resets.
On detection of an EEH error, some Power4 systems seem to occasionally
want to be reset twice before they report themselves as fully recovered.
This patch re-arranges the code to attempt additional resets if the first
one doesn't take.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-22 15:19:58 +10:00
Scott Wood
3d574abd59 [POWERPC] Include <asm/mmu.h> in arch/powerpc/sysdev/fsl_soc.h for phys_addr_t.
This patch causes fsl_soc.h to import the definition of phys_addr_t
itself, rather than relying on its includer to do so.

Signed-off-by: Scott Wood <scott@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-22 15:19:58 +10:00
Nathan Lynch
cc9881ce37 [POWERPC] Demacrofy arch/powerpc/platforms/maple/pci.c
Noticed that the U3_*CFA macros have some typos:

#define U3_HT_CFA0(devfn, off)		\
		((((unsigned long)devfn) << 8) | offset)

(refers to offset rather than off)

#define U3_AGP_CFA0(devfn, off)	\
	((1 << (unsigned long)PCI_SLOT(dev_fn)) \
	| (((unsigned long)PCI_FUNC(dev_fn)) << 8) \

(refers to dev_fn rather than devfn)

Things happen to work, but there doesn't seem to be any reason these
shouldn't be functions.  Overall behavior should be unchanged.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-22 15:19:58 +10:00
Nathan Lynch
d608df5c7d [POWERPC] Maple U3 HT - reject inappropriate config space access
When there is a PCI-X mode 2 capable device behind the HT<->PCI-X
bridge, the pci core decides that the device has the extended 4K
config space, even though the bus is not operating in mode 2.  This is
because the u3_ht pci ops silently accept offsets greater than 255 but
use only the 8 least significant bits, which means reading at offset
0x100 gets the data at offset 0x0, and causes confusion for lspci.

Reject accesses to configuration space offsets greater than 255.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-22 15:19:58 +10:00
Scott Wood
ed709d134d [POWERPC] Fix IPIC pending register assignments
This patch fixes the assignment of pending registers to IRQ numbers for
the IPIC; the code previously assigned all IRQs to the high pending word
regardless of which word the interrupt belonged to.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-22 15:19:58 +10:00
Stephen Rothwell
caf81329c3 [POWERPC] Merge iSeries i/o operations with the rest
This patch changes the io operations so that they are out of line if
CONFIG_PPC_ISERIES is set and includes a firmware feature check in
that case.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-22 15:19:58 +10:00
Linas Vepstas
6a1ca373a1 [POWERPC] EEH: support MMIO enable recovery step
Update to the PowerPC PCI error recovery code.

Add code to enable MMIO if a device driver reports that it is capable
of recovering on its own.  One anticipated use of this having a device
driver enable MMIO so that it can take a register dump, which might
then be followed by the device driver requesting a full reset.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-21 22:59:20 +10:00
Linas Vepstas
47b5c838af [POWERPC] EEH: enable MMIO/DMA on frozen slot
Add wrapper around the rtas call to enable MMIO or DMA on a frozen pci
slot.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-21 22:59:14 +10:00
Linas Vepstas
cb5b562444 [POWERPC] EEH: code comment cleanup
Clean up subroutine documentation; mostly formatting changes, with
some new content.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-21 22:59:10 +10:00
Linas Vepstas
af52559218 [POWERPC] EEH: balance pcidev_get/put calls
This corrects a pci_dev get/put imbalance that can occur only in
highly unlikely situations (kmalloc failures, pci devices with
overlapping resource addresses).  No actual failures seen, this was
spotted during code review.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-21 22:59:08 +10:00
Peter Bergner
838fdb4d2d [POWERPC] Add AT_PLATFORM value for Xilinx Virtex-4 FX
Jakub noticed the cputable.c entry for Xilinx Virtex-4 FX was missing
a .platform value, so the AT_PLATFORM value wouldn't be set correctly.
This adds it.

Signed-off-by: Peter Bergner <bergner@vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-21 22:54:54 +10:00
Mark A. Greer
b2c5f61920 [POWERPC] Start arch/powerpc/boot code reorganization
This abstracts the operations used in the bootwrapper, and defines
the operations needed for the bootwrapper to run on an OF platform.

The operations have been divided up into platform ops (platform_ops),
firmware ops (fw_ops), device tree ops (dt_ops), and console ops
(console_ops).

The proper operations will be hooked up at runtime to provide the
functionality that you need.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-20 15:09:58 +10:00
Paul Mackerras
a4dc7ff089 [POWERPC] Define of_read_ulong helper
There are various places where we want to extract an unsigned long
value from a device-tree property that can be 1 or 2 cells in length.
This replaces some open-coded calculations, and one place where we
assumed without checking that properties were the length we wanted,
with a little of_read_ulong() helper.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-20 15:09:48 +10:00
Stephen Rothwell
5adcaf50cf [POWERPC] convert string i/o operations to C
This produces essentially the same code and will make the iSeries i/o
consolidation easier.

The count parameter is changed to long since that will produce the same
(better) code on 32 and 64 bit builds.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:06:18 +10:00
Stephen Rothwell
73ea9e1bcb [POWERPC] clean up ide io accessors
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:06:18 +10:00
Stephen Rothwell
661f1cdb8b [POWERPC] remove unused asm routines
_insw, _outsw, _insl amd _outsl are all unused, so remove them.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:06:18 +10:00
Stephen Rothwell
9ca91e0fb5 [POWERPC] silence a warning
Left over from the constifying of get_property.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:02:51 +10:00
Stephen Rothwell
4f896e53ee [POWERPC] make spinlocks work in a combined kernel
If we build a pSeries/iSeries combined kernel, we will need this.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:01:16 +10:00
Kim Phillips
7dcd86e143 [POWERPC] Fix MPC8349EMDS dts PCI interrupt-map values for IDSEL 0x18
Fix MPC8349EMDS dts PCI interrupt-map values for IDSEL 0x18 per
Tanya's catch.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Tanya Jiang <tanya.jiang@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-14 10:36:11 +10:00
Olof Johansson
f04da0bc36 [POWERPC] Fix non-smp build
This fixes a compile error that only surfaces on CONFIG_SMP=n builds;
<asm/hvcall.h> seems to get pulled in through another header file for
SMP builds.  This problem was introduced by the hvcall stats patch.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-14 10:36:11 +10:00
Paul Mackerras
c547fc28ab Merge branch 'linux-2.6' 2006-09-14 07:07:18 +10:00
Linus Torvalds
63b98080da 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 G5 DART (IOMMU) race causing occasional data corruption
  [POWERPC] Fix MMIO ops to provide expected barrier behaviour
  [POWERPC] Fix interrupt clearing in kdump shutdown sequence
  [POWERPC] update prep_defconfig
  [POWERPC] kdump: Support kernels having 64k page size.
  [POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic().
  [POWERPC] Add new, missing argument to of_irq_map_raw() for 86xx.
  [POWERPC] Update defconfigs
2006-09-13 08:01:41 -07:00
Benjamin Herrenschmidt
eeac5c142b [POWERPC] Fix G5 DART (IOMMU) race causing occasional data corruption
It seems that the occasional data corruption observed with the tg3
driver wasn't due to missing barriers after all, but rather seems to
be due to the DART (= IOMMU) in the U4 northbridge reading stale
IOMMU table entries from memory due to a race.  This fixes it by
making the CPU read the entry back from memory before using it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 22:12:52 +10:00
Paul Mackerras
f007cacffc [POWERPC] Fix MMIO ops to provide expected barrier behaviour
This changes the writeX family of functions to have a sync instruction
before the MMIO store rather than after, because the generally expected
behaviour is that the device receiving the MMIO store can be guaranteed
to see the effects of any preceding writes to normal memory.

To preserve ordering between writeX and readX, and to preserve ordering
between preceding stores and the readX, the readX family of functions
have had an sync added before the load.

Although writeX followed by spin_unlock is not officially guaranteed
to keep the writeX inside the spin-locked region unless an mmiowb()
is used, there are currently drivers that depend on the previous
behaviour on powerpc, which was that the mmiowb wasn't actually required.
Therefore we have a per-cpu flag that is set by writeX, cleared by
__raw_spin_lock and mmiowb, and tested by __raw_spin_unlock.  If it is
set, __raw_spin_unlock does a sync and clears it.

This changes both 32-bit and 64-bit readX/writeX.  32-bit already has a
sync in __raw_spin_unlock (since lwsync doesn't exist on 32-bit), and thus
doesn't need the per-cpu flag.

Tested on G5 (PPC970) and POWER5.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 22:08:26 +10:00
David Howells
3dd836a56d [POWERPC] Export copy_4K_page()
Export copy_4K_page() for use by modules via copy_page() (such as
CacheFiles).

Signed-Off-By: David Howells <dhowells@redhat.com>

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Olaf Hering
26c8af5f01 [POWERPC] print backtrace when entering xmon
xmon does not print a backtrace per default. This is bad on systems with
USB keyboard, the most needed info about the crash is lost.
print a backtrace during the very first xmon entry.

Booting with xmon=nobt disables the autobacktrace functionality.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Mike Kravetz
57852a853b [POWERPC] powerpc: Instrument Hypervisor Calls
Add instrumentation for hypervisor calls on pseries.  Call statistics
include number of calls, wall time and cpu cycles (if available) and
are made available via debugfs.  Instrumentation code is behind the
HCALL_STATS config option and has no impact if not enabled.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Olof Johansson
1e76875e51 [POWERPC] powerpc: PA Semi PWRficient platform support
Base patch for PA6T and PA6T-1682M. This introduces the
arch/powerpc/platform/pasemi directory, together with basic
implementations for various setup.

Much of this was based on other platform code, i.e. Maple, etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Olof Johansson
b3ebd1d862 [POWERPC] powerpc: PA6T cputable entry, PVR value
Introduce PWRficient PA6T cputable entries and feature bits.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Olof Johansson
5a2fe38d28 [POWERPC] powerpc: Reduce default cacheline size to 64 bytes
Reduce default cacheline size on 64-bit powerpc from 128 bytes to 64.
This is the architected minimum. In most cases we'll still end up using
cache line information from the device tree, but defaults are used during
early boot and doing a few dcbst/icbi's too many there won't do any harm.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Will Schmidt
c3412dcb75 [POWERPC] Emulate power5 popcntb instruction
In an attempt to make it easier for a power5 optimized app to run on a
power4 or a 970 or random earlier machine, this provides emulation of
the popcntb instruction.

Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Michael Ellerman
f50d4cfc98 [POWERPC] Split out vpa unregister logic from pseries_kexec_cpu_down_xics()
As part of the new irq code pseries_kexec_cpu_down() was split into a
xics and mpic version. The vpa unregister logic is now only done in the
xics routine, and although that's ok in practice (we don't have SPLPAR
machines with mpic), I'd rather have the two concepts stay separate.

So move the vpa unregister into pseries_kexec_cpu_down(), which gets called
by both the xics and mpic routines. This also gives us an obvious place to
put any new kexec-down logic needed in future.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Mohan Kumar M
2e8e8dacc5 [POWERPC] Fix interrupt clearing in kdump shutdown sequence
Call chip->eoi(irq) to clear any pending interrupt in case of kdump
shutdown sequence.  chip->end(irq) does not serve this purpose.

Signed-off-by: Mohan Kumar M <mohan@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:31:23 +10:00
Jon Loeliger
20fb96e2aa [POWERPC] Add new, missing argument to of_irq_map_raw() for 86xx.
Ben speaks; we follow.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:28:28 +10:00
Al Viro
e65e1fc2d2 [PATCH] syscall class hookup for all normal targets
Take default arch/*/kernel/audit.c to lib/, have those with special
needs (== biarch) define AUDIT_ARCH in their Kconfig.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-12 03:04:40 -04:00
Al Viro
55669bfa14 [PATCH] audit: AUDIT_PERM support
add support for AUDIT_PERM predicate

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-11 13:32:30 -04:00
Al Viro
dc104fb323 [PATCH] audit: more syscall classes added
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-11 13:32:27 -04:00
Al Viro
c08037997d [PATCH] syscall classes hookup for ppc and s390
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-11 13:32:25 -04:00
Paul Mackerras
fb7d527c1a [POWERPC] Update defconfigs
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-10 11:04:36 +10:00