Commit Graph

526 Commits

Author SHA1 Message Date
Hugh Dickins
0b14c179a4 [PATCH] unpaged: VM_UNPAGED
Although we tend to associate VM_RESERVED with remap_pfn_range, quite a few
drivers set VM_RESERVED on areas which are then populated by nopage.  The
PageReserved removal in 2.6.15-rc1 changed VM_RESERVED not to free pages in
zap_pte_range, without changing those drivers not to set it: so their pages
just leak away.

Let's not change miscellaneous drivers now: introduce VM_UNPAGED at the core,
to flag the special areas where the ptes may have no struct page, or if they
have then it's not to be touched.  Replace most instances of VM_RESERVED in
core mm by VM_UNPAGED.  Force it on in remap_pfn_range, and the sparc and
sparc64 io_remap_pfn_range.

Revert addition of VM_RESERVED to powerpc vdso, it's not needed there.  Is it
needed anywhere?  It still governs the mm->reserved_vm statistic, and special
vmas not to be merged, and areas not to be core dumped; but could probably be
eliminated later (the drivers are probably specifying it because in 2.4 it
kept swapout off the vma, but in 2.6 we work from the LRU, which these pages
don't get on).

Use the VM_SHM slot for VM_UNPAGED, and define VM_SHM to 0: it serves no
purpose whatsoever, and should be removed from drivers when we clean up.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-22 09:13:42 -08:00
Paul Mackerras
54c4e6b5fe powerpc: Fix bug in timebase synchronization on 32-bit SMP powermac
We were using udelay in the loop on the primary cpu waiting for the
secondary cpu to take the timebase value.  Unfortunately now that
udelay uses the timebase, and the timebase is stopped at this point,
the udelay never terminated.  This fixes it by not using udelay, and
increases the number of loops before we time out to compensate.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-19 21:24:55 +11:00
Paul Mackerras
21a6290220 powerpc: move include/asm-ppc64/ptrace-common.h to arch/powerpc/kernel
It's only used by arch/powerpc/kernel/ptrace{,32}.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-19 20:47:22 +11:00
Paul Mackerras
f8ef270596 powerpc: Merge pci.h
This involves some minor changes: a few unused functions that the
ppc32 pci.c provides are no longer declared here or exported;
pcibios_assign_all_busses now just refers to the pci_assign_all_buses
variable on both 32-bit and 64-bit; pcibios_scan_all_fns is now
just 0 instead of a function that always returns 0 on 64-bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-19 20:46:04 +11:00
David Gibson
800fc3eeb0 [PATCH] powerpc: Remove imalloc.h
asm-ppc64/imalloc.h is only included from files in arch/powerpc/mm.
We already have a header for mm local definitions,
arch/powerpc/mm/mmu_decl.h.  Thus, this patch moves the contents of
imalloc.h into mmu_decl.h.  The only exception are the definitions of
PHBS_IO_BASE, IMALLOC_BASE and IMALLOC_END.  Those are moved into
pgtable.h, next to similar definitions of VMALLOC_START and
VMALLOC_SIZE.

Built for multiplatform 32bit and 64bit (ARCH=powerpc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-19 14:46:02 +11:00
Benjamin Herrenschmidt
e53566409c [PATCH] powerpc: Fix setting MPIC priority
Trying to set the priority would just disable the interrupt due to an
incorrect mask used. We rarely use that call, in fact, I think only in
the powermac code for the cmd-power key combo that triggers xmon. So it
got unnoticed for a while.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-19 14:19:13 +11:00
Paul Mackerras
8a5abdf80e powerpc: Move defconfig over and remove remaining arch/ppc64 files
make defconfig will now use arch/powerpc/configs/ppc64_defconfig
if running on a ppc64 system.  I need to add an
arch/powerpc/configs/ppc_defconfig sometime.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 16:39:08 +11:00
Paul Mackerras
44aedfe7de powerpc: Fix a couple of compile warnings for 32-bit compiles
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 15:54:12 +11:00
Paul Mackerras
49e16b7bec powerpc: time-of-day fixes for 32-bit CHRP systems
This makes 32-bit CHRP systems use the RTAS time-of-day routines if
available.  It fixes a bug in the RTAS time-of-day routines where they
were storing a 64-bit timebase value in an unsigned long by making
those variables u64.  Also, the direct-access time-of-day routines
had the wrong convention for the month and year in the struct rtc_time.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 15:52:38 +11:00
Paul Mackerras
6146eed1e9 powerpc: Fix compile error on pSeries arising from delay.h changes
pseries_dedicated_idle() was using __get_tb which used to be defined
in asm/delay.h.  Change it to use get_tb from asm/time.h, which is
in fact exactly the same thing.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 15:47:18 +11:00
Paul Mackerras
437a58db57 powerpc: Move remaining .c files from arch/ppc64 to arch/powerpc
This also deletes the now-unused Makefiles under arch/ppc64.

Both of the files moved over could use some merging, but for now I
have moved them as-is and arranged for them to be used only in 64-bit
kernels.  For 32-bit kernels we still use arch/ppc/kernel/idle.c and
drivers/char/generic_nvram.c as before.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 15:43:34 +11:00
Mike Kravetz
f62859bb68 [PATCH] Remove SPAN_OTHER_NODES config definition
The config option SPAN_OTHER_NODES was created so that we could
make pSeries numa layouts work within the DISCONTIG memory model.
Now that DISCONTIG has been replaced by SPARSEMEM, we can eliminate
this option.

I'll be sending a separate patch to Andrew to remove the arch
independent code as pSeries was the only arch that needed this.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 14:45:54 +11:00
Benjamin Herrenschmidt
5daf9071b5 [PATCH] powerpc: merge align.c
This patch merges align.c, the result isn't quite what was in ppc64 nor
what was in ppc32 :) It should implement all the functionalities of both
though. Kumar, since you played with that in the past, I suppose you
have some test cases for verifying that it works properly before I dig
out the 601 machine ? :)

Since it's likely that I won't be able to test all scenario, code
inspection is much welcome.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 14:39:23 +11:00
Paul Mackerras
6defa38b37 powerpc: Fix delay functions for 601 processors
My earlier merge of delay.h introduced a timebase-based udelay for
32-bit machines but also broke the 601, which doesn't have the
timebase register.  This fixes it by using the 601's RTC register on
the 601, and also moves __delay() and udelay() to be out-of-line in
arch/powerpc/kernel/time.c.  These functions aren't really performance
critical, after all.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 14:08:12 +11:00
Segher Boessenkool
a097a35c9a [PATCH] powerpc: Maple: request I/O resource.
Reserve the Maple RTC I/O resource.  Needed now we use genrtc.

Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 13:31:20 +11:00
Olaf Hering
68643cfb87 [PATCH] ppc boot: replace string labels with numbers
Replacing the string labels with numbers saves 117 bytes in the final zImage.
These local labels are not discared.

Signed-off-by: Olaf Hering <olh@suse.de>

 arch/powerpc/boot/crt0.S |   23 +++++++++++------------
 1 files changed, 11 insertions(+), 12 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-18 13:18:16 +11:00
David Woodhouse
1e28a7ddd3 [PATCH] Avoid use of uninitialised spinlock in EEH.
If the kernel supports both G5 and pSeries, and CONFIG_EEH is enabled,
eeh_init() is (quite reasonably) never called when we boot on a G5. Yet
eeh_check_failure() still gets called. We should avoid doing that if
!eeh_subsystem_enabled.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-17 16:53:38 +11:00
Linus Torvalds
d58a75ef75 Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2005-11-16 07:58:48 -08:00
Benjamin Herrenschmidt
5d66da3d71 [PATCH] powerpc: Make the vDSO functions set error code (#2)
The vDSO functions should have the same calling convention as a syscall.
Unfortunately, they currently don't set the cr0.so bit which is used to
indicate an error. This patch makes them clear this bit unconditionally
since all functions currently succeed. The syscall fallback done by some
of them will eventually override this if the syscall fails.

This also changes the symbol version of all vdso exports to make sure
glibc can differenciate between old and fixed calls for existing ones
like __kernel_gettimeofday.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-16 14:05:11 +11:00
Paul Mackerras
94b212c29f powerpc: Move ppc64 boot wrapper code over to arch/powerpc
This also extends the code to handle 32-bit ELF vmlinux files as well
as 64-bit ones.  This is sufficient for booting on new-world 32-bit
powermacs (i.e. all recent machines).

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-16 13:52:21 +11:00
Olof Johansson
950fc0025f [PATCH] powerpc: add new powerbooks to feature table
Hi,

The previous PowerBook patch didn't contain the feature table updates
for ARCH=powerpc. Here they are.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-16 13:52:06 +11:00
Benjamin Herrenschmidt
b5166cc252 [PATCH] powerpc: pci_64 fixes & cleanups
I discovered that in some cases (PowerMac for example) we wouldn't
properly map the PCI IO space on recent kernels. In addition, the code
for initializing PCI host bridges was scattered all over the place with
some duplication between platforms.

This patch fixes the problem and does a small cleanup by creating a
pcibios_alloc_controller() in pci_64.c that is similar to the one in
pci_32.c (just takes an additional device node argument) that takes care
of all the grunt allocation and initialisation work. It should work for
both boot time and dynamically allocated PHBs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-16 13:29:46 +11:00
Michael Ellerman
f9e4ec57c6 [PATCH] powerpc: More debugging fixups
Add a few more missing includes of udbg.h

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-16 13:29:40 +11:00
Michael Ellerman
eb481899aa [PATCH] powerpc: Fixup debugging in lmb.c
Somewhere we lost the include of udbg.h in lmb.c. While we're there, add a DBG
macro like every other file has and use it in lmb_dump_all().

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-16 13:28:40 +11:00
Benjamin Herrenschmidt
5444a5e9e8 [PATCH] powerpc: update defconfigs
My patch moving ppc64 RTC to genrtc was supposed to update all
defconfigs, but for some reason, the patch actually posted only had the
pseries one... ouch. This patch properly updates all defconfigs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-16 13:28:32 +11:00
Paul Mackerras
fb6d73d301 [PATCH] powerpc: Fix sparsemem with memory holes [was Re: ppc64 oops..]
This patch should fix the crashes we have been seeing on 64-bit
powerpc systems with a memory hole when sparsemem is enabled.
I'd appreciate it if people who know more about NUMA and sparsemem
than me could look over it.

There were two bugs.  The first was that if NUMA was enabled but there
was no NUMA information for the machine, the setup_nonnuma() function
was adding a single region, assuming memory was contiguous.  The
second was that the loops in mem_init() and show_mem() assumed that
all pages within the span of a pgdat were valid (had a valid struct
page).

I also fixed the incorrect setting of num_physpages that Mike Kravetz
pointed out.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-15 16:57:12 -08:00
Ben Collins
fa63b22982 [PATCH] Add missing EXPORT_SYMBOLS() for __ide_mm_* functions on powerpc
These exported symbols are in arch/ppc/ but missing from arch/powerpc/ for
ppc32 builds.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-15 08:59:19 -08:00
Paul Mackerras
ba76cd575f powerpc: Remove __init from a function used in suspend/resume.
Suspend/resume on powermacs uses the pmac_get_boot_time function,
so it can't be marked as __init.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-15 11:17:09 +11:00
Paul Mackerras
cc657f5392 powerpc: Fix clearing of the FPSCR when invoking a signal handler
As pointed out by Gary Byers, we were clearing the image of the FPSCR
(floating point status and control register) in the thread_struct before
copying it to the user stack when invoking a signal.  Thus the task
would see its FPSCR getting cleared when it took a signal.

While fixing it I noticed that our swapcontext system call was also
clearing FPSCR.  It shouldn't, so I fixed that too.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-15 11:11:32 +11:00
Paul Mackerras
5be396b00c powerpc: Mark PREP and embedded as broken for now
These machines don't have working ARCH=powerpc support yet, so make
them depend on BROKEN so people don't enable them inadvertently and
get compile errors.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 17:31:55 +11:00
Paul Mackerras
1dfc677209 powerpc: Export a couple of prom functions
These are needed by the TPM driver, apparently.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 17:30:40 +11:00
Paul Mackerras
7568cb4ef6 powerpc: Move most remaining ppc64 files over to arch/powerpc
Also deletes files in arch/ppc64 that are no longer used now that
we don't compile with ARCH=ppc64 any more.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 17:30:17 +11:00
Paul Mackerras
821077b261 Merge git://oak/home/sfr/kernels/iseries/work 2005-11-14 17:15:45 +11:00
Stephen Rothwell
d7867959e7 powerpc: iSeries build fixes
log_plpar_hcall_return is only used on PPC_PSERIES, so move
it closer to its users and inside ifdef CONFIG_PPC_PSERIES.

remove the last vestiges of systemcfg in iSeries.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-14 17:14:51 +11:00
Benjamin Herrenschmidt
3136254ca5 [PATCH] powerpc: kill ppc64 rtc.c, use genrtc instead
This moves the rtas RTC callbacks to rtas-rtc.c in arch/powerpc/kernel,
and kills the rest of arch/ppc64/kernel/rtc.c which was just a duplicate
of the genrtc functionality. Also enable build of genrtc for
CONFIG_PPC64 (it just works are we already have the required callbacks)
and enable it in all defconfigs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 16:36:08 +11:00
Benjamin Herrenschmidt
0c37ec2aa8 [PATCH] powerpc: vdso fixes (take #2)
This fixes various errors in the new functions added in the vDSO's,
I've now verified all functions on both 32 and 64 bits vDSOs. It also
fix a sign extension bug getting the initial time of day at boot that
could cause the monotonic clock value to be completely on bogus for
64 bits applications (with either the vDSO or the syscall) on
powermacs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 16:35:58 +11:00
Benjamin Herrenschmidt
50092b233a [PATCH] powerpc: Always rebuild arch/powerpc/include/asm symlink
This patch uses a FORCE dependency on the arch/powerpc/include/asm
symlink so that it always gets rebuilt, thus avoiding all sort of funny
errors if the .config is changed between 32 and 64 bits.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 16:35:50 +11:00
Michael Ellerman
593e537b93 [PATCH] powerpc: Export htab start/end via device tree
The userspace kexec-tools need to know the location of the htab on non-lpar
machines, as well as the end of the kernel. Export via the device tree.

NB. This patch has been updated to use "linux,x" property names. You may
need to update your kexec-tools to match.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 16:34:06 +11:00
Michael Ellerman
c5e24354ef [PATCH] powerpc: Turn cpu_irq_down into kexec_cpu_down
We currently have a ppc_md member called cpu_irq_down, which disables IRQs
for the cpu in question. The only caller of cpu_irq_down is the kexec code.

On pSeries we need to do more than just teardown IRQs at kexec time, so rename
the ppc_md member to kexec_cpu_down and expand it. The pSeries code needs to
know, and other platforms might too, whether we're doing a crash shutdown (ie.
panicking) or a regular kexec, so add a flag for that.

The pSeries implementation of kexec_cpu_down does an unregister VPA call, which
tells the Hypervisor to stop writing stuff into our pacas. Without this we can
get weird memory corruption bugs when we kexec, caused by the Hypervisor
writing into the first kernel's pacas which happens to be somewhere interesting
in the second kernel's memory.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 16:33:09 +11:00
Stephen Rothwell
868accb7b9 powerpc: have only one definition of __irq_offset_value
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-14 14:44:33 +11:00
Stephen Rothwell
d9ae2bad5c powerpc: make iSeries use generic virtual irq mapping
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-14 14:44:24 +11:00
Andrew Morton
4694ca02d1 [PATCH] powerpc-xmon-build-fix
arch/powerpc/xmon/xmon.c:525: error: syntax error before "xmon_irq"
arch/powerpc/xmon/xmon.c:526: warning: return type defaults to `int'
arch/powerpc/xmon/xmon.c: In function `xmon_irq':
arch/powerpc/xmon/xmon.c:532: error: `IRQ_HANDLED' undeclared (first use in this function)
arch/powerpc/xmon/xmon.c:532: error: (Each undeclared identifier is reported only once
arch/powerpc/xmon/xmon.c:532: error: for each function it appears in.)

Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-13 18:14:13 -08:00
Kumar Gala
4c8d3d997e [PATCH] Update email address for Kumar
Changed jobs and the Freescale address is no longer valid.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-13 18:14:10 -08:00
Christoph Hellwig
535f8d65d8 [SPARC]: Fix RTC compat ioctl kernel log spam.
On Fri, Nov 11, 2005 at 12:58:40PM -0800, David S. Miller wrote:
> 
> This change:
> 
> diff-tree 8ca2bdc7a9 (from feee207e44d3643d19e648aAuthor: Christoph Hellwig <hch@lst.de>
> Date:   Wed Nov 9 12:07:18 2005 -0800
> 
>     [SPARC] sbus rtc: implement ->compat_ioctl
>     
>     Signed-off-by: Christoph Hellwig <hch@lst.de>
>     Signed-off-by: David S. Miller <davem@davemloft.net>
> 
> results in the console now getting spewed on sparc64 systems
> with messages like:
> 
> [   11.968298] ioctl32(hwclock:464): Unknown cmd fd(3) cmd(401c7014){00} arg(efc
> What's happening is hwclock tries first the SBUS rtc device ioctls
> then the normal rtc driver ones.
> 
> So things actually worked better when we had the SBUS rtc compat ioctl
> directly handled via the generic compat ioctl code.
> 
> There are _so_ many rtc drivers in the kernel implementing the
> generic rtc ioctls that I don't think putting a ->compat_ioctl
> into all of them to fix this problem is feasible.  Unless we
> write a single rtc_compat_ioctl(), export it to modules, and hook
> it into all of those somehow.
> 
> But even that doesn't appear to have any pretty implementation.
> 
> Any better ideas?

We had similar problems with other ioctls where userspace did things
like that.  What we did there was to put the compat handler to generic
code.  The patch below does that, adding a big comment about what's
going on and removing the COMPAT_IOCTL entires for these on powerpc
that not only weren't ever useful but are duplicated now aswell.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-11-12 12:10:54 -08:00
Paul Mackerras
271c3f35bd powerpc: Fix some compile problems with the VDSO stuff
We needed the VDSO symbols in the arch/ppc asm-offsets.c, and there
were a few usages of _systemcfg still left lying around.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 23:04:40 +11:00
Paul Mackerras
548ccebc2a powerpc: Fix reading and writing SPRs from xmon on 32-bit
When we created the instructions to read/write SPRs in xmon, we were
setting up a ppc64-style procedure descriptor and calling that, which
doesn't work in 32-bit.  For 32-bit a function pointer just points
to the instructions of the function.  This fixes it to do the right
thing for both 32-bit and 64-bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:36:34 +11:00
Paul Mackerras
22c841c9a4 powerpc: Initialize secondary CPU setup for 32-bit SMP
32-bit SMP powermacs weren't booting with ARCH=powerpc because the
boot cpu wasn't saving away the state of various control registers,
but the secondary CPUs were loading them from the uninitialized
state.  This adds the necessary save-state call.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:34:43 +11:00
Benjamin Herrenschmidt
a7f290dad3 [PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel
This patch moves the vdso's to arch/powerpc, adds support for the 32
bits vdso to the 32 bits kernel, rename systemcfg (finally !), and adds
some new (still untested) routines to both vdso's: clock_gettime() with
support for CLOCK_REALTIME and CLOCK_MONOTONIC, clock_getres() (same
clocks) and get_tbfreq() for glibc to retreive the timebase frequency.

Tom,Steve: The implementation of get_tbfreq() I've done for 32 bits
returns a long long (r3, r4) not a long. This is such that if we ever
add support for >4Ghz timebases on ppc32, the userland interface won't
have to change.

I have tested gettimeofday() using some glibc patches in both ppc32 and
ppc64 kernels using 32 bits userland (I haven't had a chance to test a
64 bits userland yet, but the implementation didn't change and was
tested earlier). I haven't tested yet the new functions.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:25:39 +11:00
David Woodhouse
6761c4a073 [PATCH] powerpc: remove initrd debug printk
This removes a stray debugging printk which offended Anton.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:23:36 +11:00
David Gibson
35cd8785de [PATCH] powerpc: Move udbg code to arch/powerpc
Since the udbg code in ppc64 has no ppc32 equivalent, move it straight
over into arch/powerpc (and include/asm-powerpc for udbg.h).  In time,
we probably want to meld the various bits and pieces of 32-bit early
debugging code into udbg, but for now only include it on
CONFIG_PPC64=y builds.  The only change during the move is to
standardise the protecting #ifdef/#define in udbg.h, and move its
banner comment above the initial #ifdef (which seems to be normal
practice).

Built and booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64).  Built
for 32bit multiplatform (ARCH=powerpc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:23:34 +11:00
Anton Blanchard
45fb6cea09 [PATCH] ppc64: Convert NUMA to sparsemem (3)
Convert to sparsemem and remove all the discontigmem code in the
process. This has a few advantages:

- The old numa_memory_lookup_table can go away
- All the arch specific discontigmem magic can go away

We also remove the triple pass of memory properties and instead create a
list of per node extents that we iterate through. A final cleanup would
be to change our lmb code to store extents per node, then we can reuse
that information in the numa code.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:21:11 +11:00
Anton Blanchard
3e66c4def1 [PATCH] ppc64: prep for NUMA sparsemem rework 2
Remove ppc64 specific version of nr_cpus_node and use the generic one
provided.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:20:57 +11:00
Anton Blanchard
50bcfec19f [PATCH] ppc64: Remove debug boot message
We have been printing the raw ppc64_firmware_features during boot. Since
we can work it out from the device tree, lets remove it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:20:04 +11:00
Anton Blanchard
8acb888c9c [PATCH] ppc64: Quieten lparcfg
If we dont have permission to read some information from the hypervisor,
lparcfg outputs a warning on the console. Now that lparcfg is world
readable this is a problem.

Dont warn in the case of H_Authority, remove some unnecessary function
prototypes and fix whitespace damage in a structure as well.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:20:01 +11:00
Linus Torvalds
3ae0af12b4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2005-11-10 07:37:51 -08:00
Linas Vepstas
d9564ad114 [PATCH] ppc64: mark failed devices
17-eeh-slot-marking-bug.patch

A device that experiences a PCI outage may be just one deivce out
of many that was affected. In order to avoid repeated reports of
a failure, the entire tree of affected devices should be marked
as failed. This patch marks up the entire tree.

Signed-off-by: Linas Vepstas <linas@linas.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 16:00:32 +11:00
Paul Mackerras
0c95fbb256 Merge git://oak/home/sfr/kernels/iseries/work 2005-11-10 15:54:00 +11:00
Paul Mackerras
49b09853df powerpc: Move some extern declarations from C code into headers
This also make klimit have the same type on 32-bit as on 64-bit,
namely unsigned long, and defines and initializes it in one place.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 15:53:40 +11:00
David Gibson
d3d2176a0b [PATCH] powerpc: Move more ppc64 files with no ppc32 equivalent to powerpc
This patch moves a bunch more files from arch/ppc64 and
include/asm-ppc64 which have no equivalents in ppc32 code into
arch/powerpc and include/asm-powerpc.  The file affected are:
	hvcall.h
	proc_ppc64.c
	sysfs.c
	lparcfg.c
	rtas_pci.c

The only changes apart from the move and corresponding Makefile
changes are:
	- #ifndef/#define in includes updated to _ASM_POWERPC_ form
	- trailing whitespace removed
	- comments giving full paths removed

Built and booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64), built
for 32-bit powermac (ARCH=powerpc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 15:32:37 +11:00
Benjamin Herrenschmidt
0f34f49029 [PATCH] ppc64: fix PCI IO mapping
phbs_remap_io(), which maps the PCI IO space into the kernel virtual space,
is called too early on powermac, and thus doesn't work.

This fixes it by removing the call from all platforms and putting it back
into the ppc64 common code where it belongs, after the actual probing of
the bus.

That means that before that call, only the ISA IO space (if any) is mapped,
any PIO access (from quirks for example) will fail. This happens not to be
a problem for now, but we'll have to rework that code if it becomes one in
the future.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 15:32:37 +11:00
Benjamin Herrenschmidt
47c2ac8cc3 [PATCH] powerpc: 64k pages vs. U3 iommu
That DART (U3 iommu) code didn't properly scale the number of entries
when using !4k pages. That caused crashes when booting G5s with more
than 2Gb of RAM. This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 15:03:37 +11:00
Benjamin Herrenschmidt
87655ff268 [PATCH] powerpc: 64k pages pmd alloc fix
This patch makes the kernel use a different kmem cache for PMD pages
as they are smaller than PTE pages. Avoids waste of memory.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 15:03:29 +11:00
Stephen Rothwell
676e2497f8 powerpc: remove some warnings when building iSeries
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-10 14:40:43 +11:00
Paul Mackerras
e1449ed956 powerpc: 32-bit fixes for xmon
This makes the memory examine/change command print the address as
8 digits instead of 16, and makes the memory dump command print
4 4-byte values per line instead of 2 8-byte values.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 14:30:20 +11:00
Paul Mackerras
a7ddc5e853 powerpc: Add user CPU features for POWER4, POWER5, POWER5+ and Cell.
This is at the request of the glibc folks, who want to use these bits
to select libraries optimized for the microarchitecture and new
instructions in these processors.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 14:29:18 +11:00
Paul Mackerras
cbe62e2b4a powerpc: Fix SMP time initialization problem
We were getting the last_jiffy per-cpu variable set ahead of the current
timebase in smp_space_timers on SMP machines.  This caused the loop in
timer_interrupt to loop virtually forever, since tb_ticks_since assumes
that it will never be called with the timebase behind the last_jiffy
value.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 14:28:03 +11:00
Paul Mackerras
094fe2e712 powerpc: Fixes for 32-bit powermac SMP
A couple of bugs crept in with the merge of smp.c...

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 14:26:12 +11:00
Paul Mackerras
0a5cab42a1 powerpc: Fix compile error in EEH code with gcc4
Gcc 4 doesn't like being told to inline a recursive function...

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 14:23:54 +11:00
Paul Mackerras
799d6046d3 [PATCH] powerpc: merge code values for identifying platforms
This patch merges platform codes.  systemcfg->platform is no longer used,
systemcfg use in general is deprecated as much as possible (and renamed
_systemcfg before it gets completely moved elsewhere in a future patch),
_machine is now used on ppc64 along as ppc32.  Platform codes aren't gone
yet but we are getting a step closer. A bunch of asm code in head[_64].S
is also turned into C code.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 13:37:51 +11:00
David Gibson
3ddfbcf19b [PATCH] powerpc: Consolidate asm compatibility macros
This patch consolidates macros used to generate assembly for
compatibility across different CPUs or configs.  A new header,
asm-powerpc/asm-compat.h contains the main compatibility macros.  It
uses some preprocessor magic to make the macros suitable both for use
in .S files, and in inline asm in .c files.  Headers (bitops.h,
uaccess.h, atomic.h, bug.h) which had their own such compatibility
macros are changed to use asm-compat.h.

ppc_asm.h is now for use in .S files *only*, and a #error enforces
that.  As such, we're a lot more careless about namespace pollution
here than in asm-compat.h.

While we're at it, this patch adds a call to the PPC405_ERR77 macro in
futex.h which should have had it already, but didn't.

Built and booted on pSeries, Maple and iSeries (ARCH=powerpc).  Built
for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 13:10:38 +11:00
David Gibson
f6d3577da1 [PATCH] powerpc: Move scanlog.c to platforms/pseries
scanlog.c is only compiled on pSeries.  Thus, this patch moves it to
platforms/pseries.

Built and booted on pSeries LPAR (ARCH=powerpc and ARCH=ppc64).  Built
for iSeries (ARCH=powerpc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 13:09:27 +11:00
David Gibson
26ef5c0957 [PATCH] powerpc: Merge cacheflush.h and cache.h
The ppc32 and ppc64 versions of cacheflush.h were almost identical.
The two versions of cache.h are fairly similar, except for a bunch of
register definitions in the ppc32 version which probably belong better
elsewhere.  This patch, therefore, merges both headers.  Notable
points:
	- there are several functions in cacheflush.h which exist only
on ppc32 or only on ppc64.  These are handled by #ifdef for now, but
these should probably be consolidated, along with the actual code
behind them later.
	- Confusingly, both ppc32 and ppc64 have a
flush_dcache_range(), but they're subtly different: it uses dcbf on
ppc32 and dcbst on ppc64, ppc64 has a flush_inval_dcache_range() which
uses dcbf.  These too should be merged and consolidated later.
	- Also flush_dcache_range() was defined in cacheflush.h on
ppc64, and in cache.h on ppc32.  In the merged version it's in
cacheflush.h
	- On ppc32 flush_icache_range() is a normal function from
misc.S.  On ppc64, it was wrapper, testing a feature bit before
calling __flush_icache_range() which does the actual flush.  This
patch takes the ppc64 approach, which amounts to no change on ppc32,
since CPU_FTR_COHERENT_ICACHE will never be set there, but does mean
renaming flush_icache_range() to __flush_icache_range() in
arch/ppc/kernel/misc.S and arch/powerpc/kernel/misc_32.S
	- The PReP register info from asm-ppc/cache.h has moved to
arch/ppc/platforms/prep_setup.c
	- The 8xx register info from asm-ppc/cache.h has moved to a
new asm-powerpc/reg_8xx.h, included from reg.h
	- flush_dcache_all() was defined on ppc32 (only), but was
never called (although it was exported).  Thus this patch removes it
from cacheflush.h and from ARCH=powerpc (misc_32.S) entirely.  It's
left in ARCH=ppc for now, with the prototype moved to ppc_ksyms.c.

Built for Walnut (ARCH=ppc), 32-bit multiplatform (pmac, CHRP and PReP
ARCH=ppc, pmac and CHRP ARCH=powerpc).  Built and booted on POWER5
LPAR (ARCH=powerpc and ARCH=ppc64).

Built for 32-bit powermac (ARCH=ppc and ARCH=powerpc).  Built and
booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64).  Built and booted
on G5 (ARCH=powerpc)

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 13:09:22 +11:00
Paul Mackerras
e130bedb7c Merge git://oak/home/sfr/kernels/iseries/work 2005-11-10 13:08:55 +11:00
Paul Mackerras
00557b59c6 powerpc: Fix find_next_bit on 32-bit
We had a "64" that didn't get changed to BITS_PER_LONG, resulting
in find_next_bit not working correctly.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 12:01:41 +11:00
Paul Mackerras
a23414beb6 ppc/powerpc: workarounds for old Open Firmware versions
This adds code to work around some problems with old versions of
Open Firmware, such as on the early powermacs (7500 etc.) and the
"Longtrail" CHRP machine.  On these machines we have to claim
the physical and virtual address ranges explicitly when claiming
memory and then set up a V->P mapping.

The Longtrail has more problems: setprop doesn't work, and we have
to set an "allow-reclaim" variable to 0 in order to get claim on
physical memory ranges to fail if the memory is already claimed.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 12:00:55 +11:00
Linas Vepstas
8b553f32db [PATCH] ppc64: Save & restore of PCI device BARS
14-eeh-device-bar-save.patch

After a PCI device has been resest, the device BAR's and other config
space info must be restored to the same state as they were in when
the firmware first handed us this device.  This will allow the
PCI device driver, when restarted, to correctly recognize and set up
the device.

Tis patch saves the device config space as early as reasonable after
the firmware has handed over the device.  Te state resore funcion
is inteded for use by the EEH recovery routines.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 11:38:14 +11:00
Linas Vepstas
6dee3fb940 [PATCH] ppc64: PCI reset support routines
13-eeh-recovery-support-routines.patch

EEH Recovery support routines

This patch adds routines required to help drive the recovery of
EEH-frozen slots.  The main function is to drive the PCI #RST
signal line high for a qurter of a second, and then allow for
a second & a half of settle time.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 11:38:11 +11:00
Linas Vepstas
172ca92618 [PATCH] ppc64: PCI error event dispatcher
12-eeh-event-dispatcher.patch

ppc64: EEH Recovery dispatcher thread

This patch adds a mechanism to create recovery threads when an
EEH event is received.  Since an EEH freeze state may be detected
within an interrupt context, we need to get out of the interrupt
context before starting recovery. This dispatcher does this in
two steps: first, it uses a workqueue to get out, and then
lanuches a kernel thread, so that the recovery routine can
sleep for exteded periods without upseting the keventd.

A kernel thread is created with each EEH event, rather than
having one long-running daemon started at boot time.  This is
because it is anticipated that EEH events will be very rare
(very very rare, ideally) and so its pointless to cluter the
process tables with a daemon that will almost never run.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 11:38:05 +11:00
Linas Vepstas
7f79da7acc [PATCH] ppc64: move eeh.c to powerpc directory from ppc64
11-eeh-move-to-powerpc.patch

Move arch/ppc64/kernel/eeh.c to arch//powerpc/platforms/pseries/eeh.c
No other changes (except for Makefile to build it)

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 11:37:59 +11:00
Benjamin Herrenschmidt
77ac166fba [PATCH] ppc64: Don't panic when early __ioremap fails
Early calls to __ioremap() will panic if the hash insertion fails. This
patch makes them return NULL instead. It happens with some pSeries users
who enabled CONFIG_BOOTX_TEXT. The later is getting an incorrect address
for the fame buffer and the hash insertion fails. With this patch, it
will display an error instead of crashing at boot.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 11:26:06 +11:00
David Gibson
8882a4da1c [PATCH] powerpc: Move various ppc64 files with no ppc32 equivalent to powerpc
This patch moves a bunch of files from arch/ppc64 and
include/asm-ppc64 which have no equivalents in ppc32 code into
arch/powerpc and include/asm-powerpc.  The file affected are:
	abs_addr.h
	compat.h
	lppaca.h
	paca.h
	tce.h
	cpu_setup_power4.S
	ioctl32.c
	firmware.c
	pacaData.c

The only changes apart from the move and corresponding Makefile
changes are:
	- #ifndef/#define in includes updated to _ASM_POWERPC_ form
	- trailing whitespace removed
	- comments giving full paths removed
	- pacaData.c renamed paca.c to remove studlyCaps
	- Misplaced { moved in lppaca.h

Built and booted on POWER5 LPAR (ARCH=powerpc and ARCH=ppc64), built
for 32-bit powermac (ARCH=powerpc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 11:24:04 +11:00
David Gibson
c5ff700116 [PATCH] powerpc: Merge signal.h
Having already merged the ppc and ppc64 versions of signal.c, this
patch finishes the job by merging signal.h.  The two versions were
almost identical already.  Notable changes:
	- We use BITS_PER_LONG to correctly size sigset_t
	- Remove some uneeded #includes and struct forward
declarations.  This does mean adding an include to signal_32.c which
relied on the indirect inclusion of sigcontext.h
	- As the ppc64 version, the merged signal.h has prototypes for
do_signal() and do_signal32().  Thus remove extra prototypes from
ppc_ksyms.c which had them directly.

Built and booted on POWER5 LPAR (ARCH=ppc64 and ARCH=powerpc).  Built
for 32-bit powermac (ARCH=ppc and ARCH=powerpc) and Walnut (ARCH=ppc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 11:23:46 +11:00
Andrew Morton
e4d76e1c0b [PATCH] powerpc: sched fixups
- Re-add a hunk lost during merge: ppc64 is missing the hunk that disables
  preempt on the secondary CPUs before they call cpu_idle().

- ppc's cpu_idle() had the need_resched() test wrong.

Cc: Nick Piggin <nickpiggin@yahoo.com.au>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 16:07:44 -08:00
Paul Mackerras
31e7f1ff3c Merge ../linux-2.6 2005-11-10 11:06:04 +11:00
Nick Piggin
64c7c8f885 [PATCH] sched: resched and cpu_idle rework
Make some changes to the NEED_RESCHED and POLLING_NRFLAG to reduce
confusion, and make their semantics rigid.  Improves efficiency of
resched_task and some cpu_idle routines.

* In resched_task:
- TIF_NEED_RESCHED is only cleared with the task's runqueue lock held,
  and as we hold it during resched_task, then there is no need for an
  atomic test and set there. The only other time this should be set is
  when the task's quantum expires, in the timer interrupt - this is
  protected against because the rq lock is irq-safe.

- If TIF_NEED_RESCHED is set, then we don't need to do anything. It
  won't get unset until the task get's schedule()d off.

- If we are running on the same CPU as the task we resched, then set
  TIF_NEED_RESCHED and no further action is required.

- If we are running on another CPU, and TIF_POLLING_NRFLAG is *not* set
  after TIF_NEED_RESCHED has been set, then we need to send an IPI.

Using these rules, we are able to remove the test and set operation in
resched_task, and make clear the previously vague semantics of
POLLING_NRFLAG.

* In idle routines:
- Enter cpu_idle with preempt disabled. When the need_resched() condition
  becomes true, explicitly call schedule(). This makes things a bit clearer
  (IMO), but haven't updated all architectures yet.

- Many do a test and clear of TIF_NEED_RESCHED for some reason. According
  to the resched_task rules, this isn't needed (and actually breaks the
  assumption that TIF_NEED_RESCHED is only cleared with the runqueue lock
  held). So remove that. Generally one less locked memory op when switching
  to the idle thread.

- Many idle routines clear TIF_POLLING_NRFLAG, and only set it in the inner
  most polling idle loops. The above resched_task semantics allow it to be
  set until before the last time need_resched() is checked before going into
  a halt requiring interrupt wakeup.

  Many idle routines simply never enter such a halt, and so POLLING_NRFLAG
  can be always left set, completely eliminating resched IPIs when rescheduling
  the idle task.

  POLLING_NRFLAG width can be increased, to reduce the chance of resched IPIs.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Con Kolivas <kernel@kolivas.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:33 -08:00
Nick Piggin
5bfb5d690f [PATCH] sched: disable preempt in idle tasks
Run idle threads with preempt disabled.

Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()).
How did it ever work before?

Might fix the CPU hotplugging hang which Nigel Cunningham noted.

We think the bug hits if the idle thread is preempted after checking
need_resched() and before going to sleep, then the CPU offlined.

After calling stop_machine_run, the CPU eventually returns from preemption and
into the idle thread and goes to sleep.  The CPU will continue executing
previous idle and have no chance to call play_dead.

By disabling preemption until we are ready to explicitly schedule, this bug is
fixed and the idle threads generally become more robust.

From: alexs <ashepard@u.washington.edu>

  PPC build fix

From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>

  MIPS build fix

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:33 -08:00
Matt Porter
a31751e04e [PATCH] ppc32: fix perf_irq extern on e500
Fixes e500 build and cleans up traps.c by moving perf_irq extern to
pmc.h.

Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:55:52 -08:00
Olaf Hering
143dcec2f7 [PATCH] ppc64: add MODALIAS= for vio bus
A non-broken udev would autoload also the drivers for devices on the
pseries vio bus, like ibmveth, ibmvscsic and hvsc.  This is similar to pci,
usb and ieee1394:

 /lib/modules/`uname -r`/modules.alias
alias vio:TvscsiSIBM,v-scsi* ibmvscsic
alias vio:TnetworkSIBM,l-lan* ibmveth
alias vio:Tserial-serverShvterm2* hvcs

/events/debug.00004.pci.add.1394:MODALIAS='pci:v00001014d00000188sv00000000sd00000000bc06sc04i0f'
/events/debug.00005.pci.add.1509:MODALIAS='pci:v00008086d00001229sv00001014sd000001FFbc02sc00i00'
/events/debug.00026.vio.add.1519:MODALIAS='vio:TserialShvterm1'
/events/debug.00027.vio.add.1446:MODALIAS='vio:TvscsiSIBM,v-scsi'
/events/debug.00028.vio.add.1451:MODALIAS='vio:TnetworkSIBM,l-lan'

 modprobe -v vio:TnetworkSIBM,l-lan
insmod /lib/modules/2.6.14-20051030_vio-ppc64/kernel/drivers/net/ibmveth.ko

Signed-off-by: Olaf Hering <olh@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:55:51 -08:00
Stephen Rothwell
756e7104fe powerpc: merge irq.c
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-09 18:07:45 +11:00
Stephen Rothwell
d4be4f37d9 ppc64: remove ppc_irq_dispatch_handler
Use __do_IRQ instead.  The only difference is that every controller
is now assumed to have an end() routine (only xics_8259 did not).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-09 16:19:53 +11:00
Stephen Rothwell
5a7b3ff467 ppc64: allow iSeries to use IRQSTACKS again
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-09 15:07:16 +11:00
Stephen Rothwell
b709c08328 ppc64: move stack switching up in interrupt processing
This will make the ppc64 multiplatform irq handling more like
the generic handling.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-09 13:28:33 +11:00
Stephen Rothwell
66ba135c5a powerpc: create kernel/setup.h
for functions defined by setup-common.c and used in setup_xx.c

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-09 11:35:26 +11:00
Paul Mackerras
fca5dcd483 powerpc: Simplify and clean up the xmon terminal I/O
This factors out the common bits of arch/powerpc/xmon/start_*.c into
a new nonstdio.c, and removes some stuff that was supposed to make
xmon's I/O routines somewhat stdio-like but was never used.

It also makes the parsing of the xmon= command line option common,
so that ppc32 can now use xmon={off,on,early} also.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 22:55:08 +11:00
Paul Mackerras
3825ac0ee6 powerpc: Fix crash in early boot on some powermacs
Some powermac machines were crashing in the quiesce firmware call
in prom_init.c because we have just closed the OF stdin device;
notably my 1999 G3 powerbook does this.  To avoid this, don't
close the OF stdin device on powermacs.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 22:48:08 +11:00
Mike Kravetz
7e9191daf6 [PATCH] Memory Add Fixes for ppc64
ppc64 needs a special sysfs probe file for adding new memory.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 15:17:38 +11:00
Mike Kravetz
dd7ccbd3ee [PATCH] Memory Add Fixes for ppc64
memmap_init_zone() sets page count to 1.  Before 'freeing' the
page, we need to clear the count.  This is the same that is done
on free_all_bootmem_core() for memory discovered at boot time.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 15:17:19 +11:00
Mike Kravetz
54b79248b2 [PATCH] revised Memory Add Fixes for ppc64
Add the create_section_mapping() routine to create hptes for memory
sections dynamically added after system boot.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 15:17:13 +11:00
Benjamin Herrenschmidt
76c8e25b90 [PATCH] ppc64: Fix the lazy icache/dcache code for non-RAM pages
For some stupid reason I can't explain (brown paper bag is at hand), I
removed the check pfn_valid() in the code that does the icache/dcache
coherency on POWER4 and later. That causes us to eventually try to
access non existing struct page when hashing in IO pages.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 13:07:50 +11:00
Paul Mackerras
22358ea8e1 powerpc: Fix typo in pmac_cpufreq_resume
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 12:13:38 +11:00
Mike Kravetz
0286486783 [PATCH] Memory Add Fixes for ppc64
On Tue, Nov 08, 2005 at 08:12:56AM +1100, Benjamin Herrenschmidt wrote:
> Yes, the MAX_ORDER should be different indeed. But can Kconfig do that ?
> That is have the default value be different based on a Kconfig option ?
> I don't see that ... We may have to do things differently here...

This seems to be done in other parts of the Kconfig file.  Using those
as an example, this should keep the MAX_ORDER block size at 16MB.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:20:00 +11:00
Anton Blanchard
570142ca37 [PATCH] ppc64: remove some direct xmon calls
Even though we can enable and disable xmon at runtime now, there are a
few places in the merge tree that call xmon and xmon_printf directly.

In the case below we call die() which will call xmon if it is enabled.

Also remove an unnecessary include of xmon.h in smp.c.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:19:57 +11:00
Anton Blanchard
cb09cff30a [PATCH] ppc64: fix oprofile sample bit handling
Oprofile was hardwiring the MMCRA sample bit to 1 but on newer cpus
(eg POWER5) we want to vary it based on the group being sampled.

Add a temporary workaround until people update their oprofile userspace.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:19:55 +11:00
Anton Blanchard
bcb3557694 [PATCH] ppc64: fix Memory: summary line
On ppc64 we end up with a negative value for the data size in the memory
boot message:

Memory: 2035560k/2097152k available (5792k kernel code, 89564k reserved,
18014398509481632k data, 870k bss, 352k init)

It turns out the section ordering of the linker script is different on
ppc32 and ppc64, so just count data as _edata - _sdata which should work
on both.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:19:53 +11:00
Benjamin Herrenschmidt
21fe3301f1 [PATCH] ppc: fix a bunch of warnings
Building a PowerMac kernel with ARCH=powerpc causes a bunch of warnings,
this fixes some of them

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:19:36 +11:00
Benjamin Herrenschmidt
7d49697ef9 [PATCH] ppc64: More U3 device-tree fixes
Some more U3 revisions have the missing "interrupts" property in U3,
this adds them to the fixup code in prom_init.c

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:17:53 +11:00
Benjamin Herrenschmidt
c618cf1999 [PATCH] ppc64: Update g5_defconfig for ARCH=powerpc
This patch updates g5_defconfig for ARCH=powerpc in order to add the SMU
support & thermal drivers to it, the pmac sound driver (works on some
G5s) and replaces rivafb with nvidiafb which works better for the cards
found in G5 based machines.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:17:50 +11:00
Benjamin Herrenschmidt
183d020258 [PATCH] ppc64: SMU partition recovery
This patch adds the ability to the SMU driver to recover missing
calibration partitions from the SMU chip itself. It also adds some
dynamic mecanism to /proc/device-tree so that new properties are visible
to userland.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:17:40 +11:00
Benjamin Herrenschmidt
4350147a81 [PATCH] ppc64: SMU based macs cpufreq support
CPU freq support using 970FX powertune facility for iMac G5 and SMU
based single CPU desktop.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:17:34 +11:00
David Woodhouse
a82765b6ee [PATCH] powerpc: Fix ppc32 initrd
OK, the Fedora ppc32 and ppc64 kernels should both be arch/powerpc by
tomorrow. They're booting on G5, POWER5, and my powerbook. I'll test
pmac SMP and Pegasos later -- but pmac smp is known broken in arch/ppc
anyway, and I'll live with a potential Pegasos regression for now; it
wasn't supported officially in FC4 either.

I needed to fix ppc32 initrd -- we were never setting initrd_start.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:16:41 +11:00
Paul Mackerras
24bfb00123 Merge ../linux-2.6 2005-11-08 11:14:20 +11:00
Jesper Juhl
b2325fe1b7 [PATCH] kfree cleanup: arch
This is the arch/ part of the big kfree cleanup patch.

Remove pointless checks for NULL prior to calling kfree() in arch/.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:54:06 -08:00
Christoph Hellwig
481bed4542 [PATCH] consolidate sys_ptrace()
The sys_ptrace boilerplate code (everything outside the big switch
statement for the arch-specific requests) is shared by most architectures.
This patch moves it to kernel/ptrace.c and leaves the arch-specific code as
arch_ptrace.

Some architectures have a too different ptrace so we have to exclude them.
They continue to keep their implementations.  For sh64 I had to add a
sh64_ptrace wrapper because it does some initialization on the first call.
For um I removed an ifdefed SUBARCH_PTRACE_SPECIAL block, but
SUBARCH_PTRACE_SPECIAL isn't defined anywhere in the tree.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-By: David Howells <dhowells@redhat.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:42 -08:00
Prasanna S Panchamukhi
cd6b0762a0 [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu
Andrew Morton suggested to move kprobes from kernel hacking menu, since
kernel hacking menu is in-appropriate for the Kprobes.  This patch moves
Kprobes and Oprofile under instrumentation menu.

(akpm: it's not a natural fit, but things like djprobes and the s390 guys'
statistics library need a home)

Signed-of-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: John Levon <levon@movementarian.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:35 -08:00
Roland Dreier
b0f7b8bc57 [PATCH] ppc32: Add 440SPe support
Add support for the AMCC PowerPC 440SPe SoC, including PCI Express in root
port mode.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:26 -08:00
Benjamin Herrenschmidt
863c84b97c [PATCH] ppc: Fix ppc32 build after 64K pages
Oops, some last minute changes caused the 64K pages patch to break ppc32
build, this fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:23 -08:00
Olof Johansson
732ee21f28 [PATCH] POWERPC/PPC64: Fix CONFIG_SMP=n build for ppc64
Two CONFIG_SMP=n build fixes due to missing <asm/smp.h> includes.

Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:23 -08:00
David Gibson
7d24f0b8a5 [PATCH] ppc64: Fix bug in SLB miss handler for hugepages
This patch, however, should be applied on top of the 64k-page-size patch to
fix some problems with hugepage (some pre-existing, another introduced by
this patch).

The patch fixes a bug in the SLB miss handler for hugepages on ppc64
introduced by the dynamic hugepage patch (commit id
c594adad56) due to a misunderstanding of the
srd instruction's behaviour (mea culpa).  The problem arises when a 64-bit
process maps some hugepages in the low 4GB of the address space (unusual).
In this case, as well as the 256M segment in question being marked for
hugepages, other segments at 32G intervals will be incorrectly marked for
hugepages.

In the process, this patch tweaks the semantics of the hugepage bitmaps to
be more sensible.  Previously, an address below 4G was marked for hugepages
if the appropriate segment bit in the "low areas" bitmask was set *or* if
the low bit in the "high areas" bitmap was set (which would mark all
addresses below 1TB for hugepage).  With this patch, any given address is
governed by a single bitmap.  Addresses below 4GB are marked for hugepage
if and only if their bit is set in the "low areas" bitmap (256M
granularity).  Addresses between 4GB and 1TB are marked for hugepage iff
the low bit in the "high areas" bitmap is set.  Higher addresses are marked
for hugepage iff their bit in the "high areas" bitmap is set (1TB
granularity).

To avoid conflicts, this patch must be applied on top of BenH's pending
patch for 64k base page size [0].  As such, this patch also addresses a
hugepage problem introduced by that patch.  That patch allows hugepages of
1MB in size on hardware which supports it, however, that won't work when
using 4k pages (4 level pagetable), because in that case hugepage PTEs are
stored at the PMD level, and each PMD entry maps 2MB.  This patch simply
disallows hugepages in that case (we can do something cleverer to re-enable
them some other day).

Built, booted, and a handful of hugepage related tests passed on POWER5
LPAR (both ARCH=powerpc and ARCH=ppc64).

[0] http://gate.crashing.org/~benh/ppc64-64k-pages.diff

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:23 -08:00
Paul Mackerras
c613523455 Merge ../linux-2.6 2005-11-07 14:42:09 +11:00
Michael Ellerman
76032de898 [PATCH] powerpc: Make ppc_md.set_dabr non 64-bit specific
Define ppc_md.set_dabr for both 32 + 64 bit. Cleanup the implementation for
pSeries also, it was needlessly complex. Now we just do two firmware tests at
setup time, and use one of two functions, rather than using one function and
testing on every call.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-07 13:31:13 +11:00
Paul Mackerras
2249ca9d60 powerpc: Various UP build fixes
Mostly this involves adding #include <asm/smp.h>, since that defines
things like boot_cpuid[_phys] and [gs]et_hard_smp_processor_id, which
are SMP-related but still needed on UP.  This incorporates fixes
posted by Olof Johansson and Heikki Lindholm.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-07 13:18:13 +11:00
David Gibson
dcad47fc42 [PATCH] powerpc: Kill ppcdebug
The ancient ppcdebug/PPCDBG mechanism is now only used in two places.
First, in the hash setup code, one of the bits allows the size of the
hash table to be reduced by a factor of 8 - which would be better
accomplished with a command line option for that purpose.  The other
was a bunch of bus walking related messages in the iSeries code, which
would seem to be insufficient reason to keep the mechanism.

This patch removes the last traces of this mechanism.

Built and booted on iSeries and pSeries POWER5 LPAR (ARCH=powerpc).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-07 12:37:45 +11:00
Olof Johansson
723925b7b1 [PATCH] powerpc: Nicer printing of address at oops
Add nicer printing of faulting address on unresolvable kernel faults.

Makes life a little easier for those who don't know how to decode our
register contents at oops time.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-07 12:37:28 +11:00
David Woodhouse
9d2ba6faa1 [PATCH] powerpc: Fix i8259 cascade IRQ
setup_irq() aborts immediately if there's no handler for the IRQ in
question. So i8259_init() should set up its handlers before trying to
set up the cascade on IRQ 2.

With this and the patch I sent a few days ago to fix initrd on ppc32, my
Pegasos now runs the arch/powerpc kernel.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-07 12:36:25 +11:00
Benjamin Herrenschmidt
3c726f8dee [PATCH] ppc64: support 64k pages
Adds a new CONFIG_PPC_64K_PAGES which, when enabled, changes the kernel
base page size to 64K.  The resulting kernel still boots on any
hardware.  On current machines with 4K pages support only, the kernel
will maintain 16 "subpages" for each 64K page transparently.

Note that while real 64K capable HW has been tested, the current patch
will not enable it yet as such hardware is not released yet, and I'm
still verifying with the firmware architects the proper to get the
information from the newer hypervisors.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-06 16:56:47 -08:00
Linus Torvalds
602d4a7e2f Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc-merge 2005-11-04 16:27:50 -08:00
Paul Mackerras
c51e3a417b powerpc: Fix vmlinux.lds.S for 32-bit
We can't currently use asm-ppc/page.h in vmlinux.lds.S, so until
we have a merged page.h, define PAGE_SIZE and KERNELBASE locally.
Also gets rid of some dynamic executable cruft that we had for
32-bit.  With -Ttext=$(KERNELBASE) this didn't cause any problem,
but when we changed to putting . = KERNELBASE in the vmlinux.lds.S
this cruft caused the text to get linked at 0xa0 instead of
0xc0000000.  Oops.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-05 10:36:59 +11:00
Paul Mackerras
5ad5707861 powerpc: Merge smp.c and smp.h
This also moves setup_cpu_maps to setup-common.c (calling it
smp_setup_cpu_maps) and uses it on both 32-bit and 64-bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-05 10:33:55 +11:00
Paul Mackerras
292a6c58e9 Merge branch 'for-paulus' of git://kernel/home/michael/src/work/ 2005-11-04 16:17:32 +11:00
Paul Mackerras
8ad200d7b7 powerpc: Merge smp-tbsync.c (the generic timebase sync routine)
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-04 13:28:58 +11:00
Michael Ellerman
dc3a9efb5e Merge with Paulus 2005-11-04 12:12:52 +11:00
Michael Ellerman
b8f510219e powerpc: Implement smp_release_cpus() in C not asm
There's no reason for smp_release_cpus() to be asm, and most people can make
more sense of C code. Add an extern declaration to smp.h and remove the custom
one in machine_kexec.c

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-04 12:09:42 +11:00
Michael Ellerman
40765d2b8b powerpc: Cleanup vpa code
register_vpa() doesn't actually do a VPA register call it just uses the flags
you pass it, so rename it to vpa_call() to be clearer.

We can then define register_vpa() and unregister_vpa() which are both simple
wrappers around vpa_call(). (we'll need unregister_vpa() for kexec soon)

We can then cleanup vpa_init(), and because vpa_init() is only called from
platforms/pseries we remove the definition in asm-ppc64/smp.h.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
2005-11-03 19:34:38 +11:00
Paul Mackerras
d3ab57ebdc Merge git://oak/home/sfr/kernels/iseries/work 2005-11-03 17:04:08 +11:00
David Woodhouse
91c33d28cd [PATCH] powerpc: always init nvram on 64-bit powermac
Currently there is no Kconfig symbol to indicate that we want nvram
support on 64-bit kernels; it's assumed we always want it, so make
the powermac setup code always initialize the pmac nvram code if
64-bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-03 16:56:13 +11:00
John Rose
8902e87f1f [PATCH] ppc64: Fix add notifier crashes
The extraction of PCI stuff from struct device_node left some false
assumptions in notifier code.  As a result, dynamic add crashes when
non-PCI nodes are added.  This patch fixes these assumptions.

Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-03 16:53:49 +11:00
Stephen Rothwell
879168ee51 powerpc: move include/asm-ppc64/ppc32.h to arch/powerpc/kernel
It is only included by signal_32.c

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-03 16:03:28 +11:00
Stephen Rothwell
62f4f47da6 powerpc: move ppc64/kernel/signal.c to arch/powerpc
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-03 16:03:20 +11:00
Michael Ellerman
e19e4ab415 powerpc: Set entry point and text address in linker script
Currently we set the kernel entry point and the address of the text
section in the Makefile, using CONFIG_KERNEL_START.

But we've already got <asm/page.h> in the linker script, so we can just
use KERNELBASE directly. That means if we ever change KERNELBASE there's
one less place to change it.

And we can set the entry point with ENTRY().

There are zero differences from "readelf -a vmlinux" with or without this
patch.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
2005-11-03 16:03:06 +11:00
Michael Ellerman
358c86fda0 powerpc: Make early debugging fit on 80 character terminal
There's some debugging in prom.c that wraps nastly on 80 character
terminals, reformat it to fit.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
2005-11-03 15:39:09 +11:00
Michael Ellerman
a121872032 powerpc: Move plpar_wrappers.h into arch/powerpc/platforms/pseries
Move plpar_wrappers.h into arch/powerpc/platforms/pseries, fixup white space,
and update callers.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
2005-11-03 15:33:31 +11:00
Michael Ellerman
cab0af98df powerpc: Make set_dabr() a ppc_md function
Move pSeries specific code in set_dabr() into a ppc_md function, this will
allow us to keep plpar_wrappers.h private to platforms/pseries.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
2005-11-03 15:30:49 +11:00
Michael Ellerman
60d4f4c656 powerpc: Copy default configs into arch/powerpc/configs
Copy default configs into arch/powerpc/configs, rename bpa_defconfig to
cell_defconfig while we're at it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
2005-11-03 15:24:57 +11:00
Paul Mackerras
f4fcbbe9a7 powerpc: Merge remaining RTAS code
This moves rtas-proc.c and rtas_flash.c into arch/powerpc/kernel, since
cell wants them as well as pseries (and chrp can use rtas-proc.c too,
at least in principle).  rtas_fw.c is gone, with its bits moved into
rtas_flash.c and rtas.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-03 14:41:19 +11:00
Paul Mackerras
398382999b powerpc: Compile fixes for chrp/nvram.c
Include asm/rtas.h for prototype for rtas_call etc., and make the
`done' variable unsigned int since that's what rtas_call wants.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 19:58:12 +11:00
Paul Mackerras
300230dcba powerpc: include <linux/platform_device.h> in pegasos_eth.c
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 19:57:22 +11:00
Stephen Rothwell
2be7a90675 Merge Paulus' tree 2005-11-02 18:15:43 +11:00
Horms
ebd50e5001 [PATCH] audit_sysctl_exit can only be used with CONF_AUDIT_SYSCTL
This section of code calls .audit_syscal_exit, but is inside CONFIG_AUDIT,
so it will fail to build if CONFIG_AUDITSYSCALL is not defined.

After discussion with David Woodhouse, change the ifdef to
CONFIG_AUDITSYSCALL

Signed-off-by: Horms <horms@verge.net.au>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-01 21:44:46 -08:00
Paul Mackerras
fbf1769d08 powerpc: include lmb.h in arch/powerpc/platforms/powermac/setup.c
since it uses the lmb stuff in one place.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 16:07:22 +11:00
Stephen Rothwell
aaf8a7a294 Merge iSeries include file move 2005-11-02 16:06:03 +11:00
David Gibson
f11b7bd88f [PATCH] powerpc: Move naca.h to platforms/iseries
These days, the NACA only exists on iSeries.  Therefore, this patch
moves naca.h from include/asm-ppc64 to arch/powerpc/platforms/iseries.
There was one file including naca.h outside of platforms/iseries -
arch/ppc64/kernel/udbg_scc.c.  However, that's obviously a hangover
from older days.  The include is not necessary, so this patch simply
removes it.

Built and booted on iSeries, built for G5 (which uses udbg_scc.o).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 16:05:53 +11:00
David Gibson
9933f299d0 [PATCH] powerpc: Move dart.h
asm-ppc64/dart.h is included in exactly one place -
arch/powerpc/sysdev/u3_iommu.c.  This patch, therefore, moves it into
arch/powerpc/sysdev.  While we're at it, update the #ifndef/#define
protecting the include, and the filename in the comments of
u3_iommu.c.

Built and booted on pSeries and G5, built for ppc32 powermac.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 15:25:51 +11:00
Paul Mackerras
104dd65fef powerpc: clean up bug.h further
This simplifies the macros which are different between 32-bit and
64-bit.  It also fixes a couple of printks on the bug->line element,
which is now a long.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 15:19:47 +11:00
Kelly Daly
b420677870 merge filename and modify references to iseries/vio.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 15:13:57 +11:00
Kelly Daly
bbc8b628b0 merge filename and modify references to iSeries/mf.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 15:10:38 +11:00
Paul Mackerras
a000503471 powerpc: exclude powerbook sleep code with CONFIG_PPC64 and CONFIG_PM
We were getting powerbook sleep code included, and giving compile
errors, with CONFIG_PM=y on a 64-bit build.  This excludes that code
so the kernel will compile.  One day BenH will implement on sleep on
the G5...

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 15:08:17 +11:00
Paul Mackerras
bccfd58842 powerpc: Fix compile error with CONFIG_TAU=y
A couple of instances of "i" that needed to be changed to "cpu_id"
got missed in the merge, because they were in CONFIG_TAU code.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 15:06:22 +11:00
Paul Mackerras
19fa17e5b1 powerpc: Use rtas_call not call_rtas in CHRP code
The nvram driver imported from the ppc code uses call_rtas, but
rtas_call is the name we are using in merged code (since ppc64 used
that name, and it uses far more RTAS calls than ppc32).

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-02 15:04:26 +11:00
Kelly Daly
c43a55ff4e merge filename and modify references to iseries/lpar_map.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 15:02:47 +11:00
Kelly Daly
59ce20bb34 merge filename and modify references to iseries/it_lp_reg_save.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 14:49:47 +11:00
Kelly Daly
8875ccfb7a merge filename and modify references to iseries/it_lp_queue.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 14:13:34 +11:00
Kelly Daly
f218aab5cf merge filename and modify references to iseries/it_lp_naca.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 13:51:41 +11:00
Kelly Daly
7b487bb801 merge filename and modify references to iseries/it_exp_vpd_panel.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 13:48:25 +11:00
Kelly Daly
1ec65d76f3 merge filename and modify references to iseries/hv_types.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 13:46:07 +11:00
Kelly Daly
e45423eac2 merge filename and modify references to iseries/hv_lp_event.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 12:08:31 +11:00
Kelly Daly
15b1718948 merge filename and modify reference to iseries/hv_lp_config.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 11:55:28 +11:00
Kelly Daly
8021b8a776 merge filename and modify references to iseries/hv_call_xm.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 11:41:12 +11:00
Kelly Daly
50592f5d2a merge filename and modify references to iseries/hv_call_sc.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 11:37:22 +11:00
Kelly Daly
c0a8d05c8a merge filename and modify references to iseries/hv_call_event.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-02 11:11:11 +11:00
Paul Mackerras
a39dbcf71e powerpc: Fix pseries (64-bit) build
A recent commit that removed rtas-fw.h and moved its contents to
include/asm-powerpc/rtas.h forgot to also remove the inclusion of
it in arch/powerpc/platforms/pseries/setup.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01 22:37:47 +11:00
David Gibson
a0e60b2033 [PATCH] powerpc: Merge bitops.h
Here's a revised version.  This re-introduces the set_bits() function
from ppc64, which I removed because I thought it was unused (it exists
on no other arch).  In fact it is used in the powermac interrupt code
(but not on pSeries).

- We use LARXL/STCXL macros to generate the right (32 or 64 bit)
  instructions, similar to LDL/STL from ppc_asm.h, used in fpu.S

- ppc32 previously used a full "sync" barrier at the end of
  test_and_*_bit(), whereas ppc64 used an "isync".  The merged version
  uses "isync", since I believe that's sufficient.

- The ppc64 versions of then minix_*() bitmap functions have changed
  semantics.  Previously on ppc64, these functions were big-endian
  (that is bit 0 was the LSB in the first 64-bit, big-endian word).
  On ppc32 (and x86, for that matter, they were little-endian.  As far
  as I can tell, the big-endian usage was simply wrong - I guess
  no-one ever tried to use minixfs on ppc64.

- On ppc32 find_next_bit() and find_next_zero_bit() are no longer
  inline (they were already out-of-line on ppc64).

- For ppc64, sched_find_first_bit() has moved from mmu_context.h to
  the merged bitops.  What it was doing in mmu_context.h in the first
  place, I have no idea.

- The fls() function is now implemented using the cntlzw instruction
  on ppc64, instead of generic_fls(), as it already was on ppc32.

- For ARCH=ppc, this patch requires adding arch/powerpc/lib to the
  arch/ppc/Makefile.  This in turn requires some changes to
  arch/powerpc/lib/Makefile which didn't correctly handle ARCH=ppc.

Built and running on G5.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01 21:49:02 +11:00
Arnd Bergmann
811d4176f4 [PATCH] powerpc: move arch/ppc64/kernel/bpa* to arch/powerpc/platforms/cell
This patch simply moves files over to arch/powerpc without making
any changes to them.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01 21:03:07 +11:00
Arnd Bergmann
edf03c1ee8 [PATCH] powerpc: move mmio_nvram.c over to arch/powerpc
The nvram code formally known as bpa_nvram.c is rather
generic really, so it is quite likely to be useful to
future boards not based on cell.

This patch puts it into arch/powerpc/sysdev.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01 21:03:04 +11:00
Arnd Bergmann
e9add2eeb1 [PATCH] powerpc: move rtas_fw.c out of platforms/pseries
Cell uses the same code as pSeries for flashing the firmware
through rtas, so the implementation should not be part of
platforms/pseries.

Put it into arch/powerpc/kernel instead.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01 21:02:59 +11:00
Arnd Bergmann
19fe04755a [PATCH] powerpc: create a new arch/powerpc/platforms/cell/smp.c
During the conversion to the merge tree, the Cell specific
SMP initialization was removed from the pSeries code.

This creates a new Cell specific SMP implementation file.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01 21:02:53 +11:00
Arnd Bergmann
f3f66f599d [PATCH] powerpc: Rename BPA to Cell
The official name for BPA is now CBEA (Cell Broadband
Engine Architecture). This patch renames all occurences
of the term BPA to 'Cell' for easier recognition.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-01 21:02:44 +11:00
Kelly Daly
1da4403788 merge filename and modify references to iseries/hv_call.h
Signed-off-by: Kelly Daly <kelly@au.ibm.com>
2005-11-01 16:59:20 +11:00
Stephen Rothwell
bec7c458b3 powerpc: make mem= work on iSeries again
By parsing the command line earlier, we can add the mem= value to the
flattened device tree and let the generic code sort out the memory limit
for us.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-01 14:34:30 +11:00
Stephen Rothwell
5015b49448 powerpc: fix __strnlen_user in merge tree
Change USER/KERNEL_DS so that the merged version of
__strnlen_user can be used which allows us to complete the
removal of arch/ppc64/lib/.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-11-01 14:34:17 +11:00
Paul Mackerras
e2f2e58e79 powerpc: import a fix from arch/ppc/mm/pgtable.c
... namely, the change to the 2-argument pte_alloc_kernel.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-31 14:40:03 +11:00
Paul Mackerras
734d652480 powerpc: apply recent changes to merged code
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-31 13:57:01 +11:00
Paul Mackerras
23fd07750a Merge ../linux-2.6 by hand 2005-10-31 13:37:12 +11:00
Paul Mackerras
cf00a8d18b powerpc: Fix bug arising from having multiple memory_limit variables
We had a static memory_limit in prom.c, and then another one defined
in setup_64.c and used in numa.c, which resulted in the kernel crashing
when mem=xxx was given on the command line.  This puts the declaration
in system.h and the definition in mem.c.  This also moves the
definition of tce_alloc_start/end out of setup_64.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-31 13:07:02 +11:00
Paul Mackerras
5f6b5b973a powerpc: Fix time setting bug on 32-bit
This fixes a bug where settimeofday would set the wrong parameters
in do_gtod, resulting in gettimeofday returning a value about 4
hours after the correct time.  The bug was that we divided a
negative 64-bit value with do_div, which treated it as unsigned
and gave us a result that was approximately 1.8e10 too large
(since the divisor was 1e9).

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-30 22:55:52 +11:00
Paul Mackerras
eb66ce6333 powerpc: Remove T command from xmon help text since it no longer exists
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 22:11:06 +10:00
Paul Mackerras
3ee1fcac33 powerpc: import a gfp_t fix to arch/powerpc/mm/pgtable_32.c
This applies the same fix as Al Viro recently made to
arch/ppc/mm/pgtable.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 22:10:38 +10:00
Paul Mackerras
c1c3a554a3 powerpc: 32-bit needs cur_cpu_spec exported too
Somehow we ended up with an #ifdef CONFIG_PPC64 around the export
of cur_cpu_spec, but raid6 as a module needs it on ppc32 as well
as ppc64.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 22:08:55 +10:00
Paul Mackerras
0cb7b2afd7 powerpc: Merge maple support code to arch/powerpc/platforms/maple
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 22:07:56 +10:00
Paul Mackerras
d3f67fbb96 powerpc: Add -mno-altivec for ARCH=powerpc builds
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 15:31:17 +10:00
Andy Whitcroft
ffa27b6bc6 [PATCH] ppc64 memory model depends on NUMA
Currently when we first select memory model (FLAT, DISCONTIG, SPARSE) then
select whether the machine is NUMA.  However NUMA systems may not be FLAT.
This constraint it not honoured and we may configure a NUMA/FLAT system.

Reorder the configuration such that we choose NUMA first which allows us to
only list the memory models which are valid.  We now default NUMA for known
NUMA systems.  Note that this new order also matches that used in x86.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 15:27:39 +10:00
Olaf Hering
ea6526605a [PATCH] ppc64: remove duplicate local variable in set_preferred_console
remove duplicate local variable, saves 2 asm instructions.

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 15:23:08 +10:00
Nicolas DET
dd03d25fac [PATCH] chrp_pegasos_eth: Added Marvell Discovery II SRAM support
Add proper entry to support the Marvell MV64361 (Marvell Discovery II)
SRAM.

This feature may be used by the mv643xx_eth driver.

Signed-off-by: Nicolas DET <det.nicolas@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 14:41:08 +10:00
Olaf Hering
35e95e6399 [PATCH] ppc32: nvram driver for chrp
This implements a nvram acccess method, similar to
arch/ppc64/kernel/pSeries_nvram.c tested on CHRP B50.

Signed-off-by: Olaf Hering <olh@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 14:35:00 +10:00
Roland Dreier
8b150478ae [PATCH] ppc: make phys_mem_access_prot() work with pfns instead of addresses
Change the phys_mem_access_prot() function to take a pfn instead of an
address.  This allows mmap64() to work on /dev/mem for addresses above 4G
on 32-bit architectures.  We start with a pfn in mmap_mem(), so there's no
need to convert to an address; in fact, it's actively bad, since the
conversion can overflow when the address is above 4G.

Similarly fix the ppc32 page_is_ram() function to avoid a conversion to an
address by directly comparing to max_pfn.  Working with max_pfn instead of
high_memory fixes page_is_ram() to give the right answer for highmem pages.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-29 14:25:49 +10:00
Paul Mackerras
f78541dcec powerpc: Merge xmon
The merged version follows the ppc64 version pretty closely mostly,
and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version.
The main difference for ppc64 is that the 'p' command to call
show_state (which was always pretty dodgy) has been replaced by
the ppc32 'p' command, which calls a given procedure (so in fact
the old 'p' command behaviour can be achieved with 'p $show_state').

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 22:53:37 +10:00
Paul Mackerras
c032524f0d powerpc: Make single-stepping emulation (mostly) usable on 32-bit
The sc instruction emulation can't be done the same way on 32-bit
as 64-bit yet, but this should work OK.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 22:48:08 +10:00
Paul Mackerras
d73e0c99f5 powerpc: Rename asm offset TRAP to _TRAP for 32-bit
... for consistency with 64-bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 22:45:25 +10:00
David Gibson
007e8f51b2 [PATCH] powerpc: Move xics.[ch] into platforms/pseries
This patch moves the XICS interrupt controller code into the
platforms/pseries directory, since it only appears on pSeries
machines.  If it ever appears on some other machine we can move it to
sysdev, although xics.c itself will need a bunch of changes in that
case to remove pSeries specific assumptions.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 16:39:19 +10:00
Paul Mackerras
22b280324a Merge git://oak/home/sfr/kernels/iseries/work/ 2005-10-28 13:50:39 +10:00
Stephen Rothwell
299f6ce491 ppc64: use mem_64.S from powerpc/lib
and remove the same bits from ppc64/lib/string.S.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-28 12:54:35 +10:00