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2469 commits

Author SHA1 Message Date
Paul Mackerras
96c4450760 powerpc: Fix time code for 601 processors
The 601 doesn't have the timebase register; instead it has an RTCL
register that counts nanoseconds and wraps at 1000000000, and an
RTCU register that counts seconds.  This makes the necessary changes
for the merged time code to use the RTCL/U registers when the kernel
is running on a 601.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-23 17:14:56 +10:00
Paul Mackerras
985990137e Merge changes from linux-2.6 by hand 2005-10-22 16:51:34 +10:00
Paul Mackerras
35499c0195 powerpc: Merge in 64-bit powermac support.
This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c to
arch/powerpc/platforms/powermac/*.c and makes various minor tweaks
elsewhere.  On the powermac we now initialize ppc_md by copying
the whole pmac_md structure into it, which required some changes in
the ordering of initializations of individual fields of it.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-22 16:02:39 +10:00
Paul Mackerras
b6ba92819d powerpc: Make set_rtc_time() return error code from lower-level function
Previously it ignored the return value from ppc_md.set_rtc_time,
but in fact the functions that that can point to do return a
useful error code, so return it from set_rtc_time().

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-22 15:57:55 +10:00
Paul Mackerras
529294d59f ppc64: Rearrange btext initialization for consistency with ppc32
Moved init_boot_display from arch/ppc64/kernel/pmac_setup.c to
arch/ppc64/kernel/btext.c and declared it in asm-ppc64/btext.h.
Call it from init_early rather than pmac_init_early.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-22 15:36:52 +10:00
Paul Mackerras
f7abbc190b ppc64: Add a `primary' argument to pci_process_bridge_OF_ranges
... for consistency with ppc32 and to make the powermac merge easier.
Also make it use just a single resource in the host bridge for multiple
consecutive elements of the ranges property.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-22 15:03:21 +10:00
Paul Mackerras
a5b518ed31 ppc64/powerpc: Fix time initialization on SMP systems
This moves smp_space_timers from arch/ppc64/kernel/smp.c to
arch/powerpc/kernel/time.c and makes it initialize last_jiffy[]
instead of paca[].next_jiffy_update_tb, since last_jiffy[] is
now what the time code uses.  It also declares smp_space_timers
in include/asm-powerpc/time.h and gets rid of an ifdef in
div128_by_32.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-22 14:55:23 +10:00
Linus Torvalds
2c86c83bf4 Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-10-21 12:23:07 -07:00
David Gibson
6cb7bfebb1 [PATCH] powerpc: Merge thread_info.h
Merge ppc32 and ppc64 versions of thread_info.h.  They were pretty
similar already, the chief changes are:

	- Instead of inline asm to implement current_thread_info(),
which needs to be different for ppc32 and ppc64, we use C with an
asm("r1") register variable.  gcc turns it into the same asm as we
used to have for both platforms.
	- We replace ppc32's 'local_flags' with the ppc64
'syscall_noerror' field.  The noerror flag was in fact the only thing
in the local_flags field anyway, so the ppc64 approach is simpler, and
means we only need a load-immediate/store instead of load/mask/store
when clearing the flag.
	- In readiness for 64k pages, when THREAD_SIZE will be less
than a page, ppc64 used kmalloc() rather than get_free_pages() to
allocate the kernel stack.  With this patch we do the same for ppc32,
since there's no strong reason not to.
	- For ppc64, we no longer export THREAD_SHIFT and THREAD_SIZE
via asm-offsets, thread_info.h can now be safely included in asm, as
on ppc32.

Built and booted on G4 Powerbook (ARCH=ppc and ARCH=powerpc) and
Power5 (ARCH=ppc64 and ARCH=powerpc).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-21 22:47:23 +10:00
Ben Dooks
7fe8785e41 [ARM] 3028/1: S3C2410 - add DCLK mask definitions
Patch from Ben Dooks

From: Guillaume Gourat <guillaume.gourat@nexvision.fr>

Add MASK definitions for DCLK0 and DCLK1

Signed-off-by: Guillaume Gourat <guillaume.gourat@nexvision.fr>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-20 23:21:20 +01:00
Ben Dooks
a7ce8edc82 [ARM] 3026/1: S3C2410 - avoid possible overflow in pll calculations
Patch from Ben Dooks

Avoid the possiblity that if the board is using
a 16.9334 or higher crystal with a high PLL
multiplier, then the pll value could overflow
the capability of an int.

Also fix the value types of the intermediate
variables to unsigned int.

Rewrite of patch from Guillaume Gourat

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-20 23:21:18 +01:00
Hugh Dickins
ac9b9c667c [PATCH] Fix handling spurious page fault for hugetlb region
This reverts commit 3359b54c8c and
replaces it with a cleaner version that is purely based on page table
operations, so that the synchronization between inode size and hugetlb
mappings becomes moot.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-20 09:02:07 -07:00
Paul Mackerras
5d14a18d59 powerpc: Fix some bugs in the new merged time code
I had the sense of the test for when to use the old 601-style RTC
registers inverted.  pmac_calibrate_decr and via_calibrate_decr
weren't setting ppc_tb_freq, on which all the further calculations
depended.  Lastly, update_gtod was losing the top 32 bits of
the new tb_to_xs value.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 22:33:06 +10:00
Paul Mackerras
17a6392d30 powerpc/ppc/ppc64: Various compile fixes.
This declares powersave_nap in system.h and makes it an int everywhere,
fixes typos for the maple platform, fixes a couple of places where
I missed removing the last two arguments from a message_pass function,
and makes ppc64 consistent with ppc32 in the type of the
pci_bridge.cfg_data field.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 21:10:09 +10:00
Paul Mackerras
399fe2bdd3 ppc: rename pci_assign_all_busses to pci_assign_all_buses
... for consistency with ppc64 and to make merging easier.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 20:57:05 +10:00
Paul Mackerras
ff065ddd96 powerpc: Merge various powermac-related header files.
Except for smu.h, which moved from asm-ppc64 to asm-powerpc, all
of these moved from asm-ppc to asm-powerpc.  In each case the
asm-ppc64 version (if there was one) was just a single line
including the asm-ppc version.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 20:53:39 +10:00
Paul Mackerras
a9c5926469 powerpc: Move smp_mpic_message_pass into mpic.c
Having it here rather than in arch/ppc64/kernel/smp.c means that
we can use it on 32-bit SMP systems easily with ARCH=powerpc.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 17:09:51 +10:00
Paul Mackerras
d8699e65c6 ppc64: Change ppc_md.get_cpuinfo to ppc_md.show_cpuinfo
... for consistency with ppc32; also add in ppc32's show_percpuinfo
function.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 17:02:01 +10:00
Becky Bruce
971dc77b64 [PATCH] powerpc: Merge types.h
This patch merges types.h into include/asm-powerpc. The only real change is
the removal of the include of linux/config.h from the 32-bit version - it
doesn't appear to be necessary.

This patch has been built on several different 32 and 64-bit platforms,
and booted on mpc8540_ads.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 16:22:50 +10:00
David Gibson
f7f6f4fea6 [PATCH] powerpc: Merge ppc64 pmc.[ch] with ppc32 perfmon.[ch]
This patches the ppc32 and ppc64 versions of the headers and .c files
with helper functions for manipulating the performance counting
hardware.  As a side effect, it removes use of the term "perfmon" from
ppc32, thus avoiding confusion with the unrelated performance counter
interface from HP Labs also called "perfmon".

Built, but not booted, for g5, pSeries, iSeries, and 32-bit Powermac
with both ARCH=powerpc and ARCH=ppc{,64} as appropriate.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 16:22:24 +10:00
Linus Torvalds
26baeba8dd Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-10-19 23:12:03 -07:00
Yasunori Goto
281dd25cdc [PATCH] swiotlb: make sure initial DMA allocations really are in DMA memory
This introduces a limit parameter to the core bootmem allocator; The new
parameter indicates that physical memory allocated by the bootmem
allocator should be within the requested limit.

We also introduce alloc_bootmem_low_pages_limit, alloc_bootmem_node_limit,
alloc_bootmem_low_pages_node_limit apis, but alloc_bootmem_low_pages_limit
is the only api used for swiotlb.

The existing alloc_bootmem_low_pages() api could instead have been
changed and made to pass right limit to the core allocator.  But that
would make the patch more intrusive for 2.6.14, as other arches use
alloc_bootmem_low_pages().  We may be done that post 2.6.14 as a
cleanup.

With this, swiotlb gets memory within 4G for both x86_64 and ia64
arches.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Ravikiran G Thirumalai <kiran@scalex86.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-19 23:11:33 -07:00
Paul Mackerras
f2783c1500 powerpc: Merge time.c and asm/time.h.
We now use the merged time.c for both 32-bit and 64-bit compilation
with ARCH=powerpc, and for ARCH=ppc64, but not for ARCH=ppc32.
This removes setup_default_decr (folds its function into time_init)
and moves wakeup_decrementer into time.c.  This also makes an
asm-powerpc/rtc.h.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-20 09:23:26 +10:00
Seth, Rohit
3359b54c8c [PATCH] Handle spurious page fault for hugetlb region
The hugetlb pages are currently pre-faulted.  At the time of mmap of
hugepages, we populate the new PTEs.  It is possible that HW has already
cached some of the unused PTEs internally.  These stale entries never
get a chance to be purged in existing control flow.

This patch extends the check in page fault code for hugepages.  Check if
a faulted address falls with in size for the hugetlb file backing it.
We return VM_FAULT_MINOR for these cases (assuming that the arch
specific page-faulting code purges the stale entry for the archs that
need it).

Signed-off-by: Rohit Seth <rohit.seth@intel.com>

[ This is apparently arguably an ia64 port bug. But the code won't
  hurt, and for now it fixes a real problem on some ia64 machines ]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-19 13:56:27 -07:00
Paul Mackerras
0b879a3144 ppc: declare smp_ops in asm/smp.h, since platform setup code needs it
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-19 23:12:01 +10:00
Paul Mackerras
143a1dec7e powerpc: Merge machdep.h
A few things change for consistency between ppc32 and ppc64:
idle functions return void; *_get_boot_time functions return
unsigned long (i.e. time_t) rather than filling in a struct rtc_time
(since that's useful to the callers and easier for pmac to
generate); *_get_rtc_time and *_set_rtc_time functions take
a struct rtc_time; irq_canonicalize is gone; nvram_sync returns
void.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-19 23:11:21 +10:00
Paul Schulz
d1972efaf2 [ARM] 3023/1: pxa-regs: Typo in ARM pxa register definitions.
Patch from Paul Schulz

The following trivial patch is to fix what looks like a typo in the PXA register
definitions. The correction comes directly from the definition in the
Intel Documentation.

 http://www.intel.com/design/pca/applicationsprocessors/manuals/278693.htm
 Intel(R) PXA 255 Processor - Developers Manual - Jan 2004 - Page 12-33

Neither 'UDCCS_IO_ROF' or 'UDCCS_IO_DME' are currently used elseware
in the main code (from grep of tree)... The current definitions have been
in the code since at lease 2.4.7.

Signed-off-by: Paul Schulz <paul@mawsonlakes.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-18 19:40:32 +01:00
Kenneth Tan
251b928cdf [ARM] 3021/1: Interrupt 0 bug fix for ixp4xx
Patch from Kenneth Tan

The get_irqnr_and_base subroutine of ixp4xx does not take interrupt 0 condition into account properly. We should not perform "subs" here. The Z flag will be set when interrupt 0 occur, which resulting "movne r1, sp" in the caller routine (irq_handler) not being executed.

When interrupt 0 occur:
o if CONFIG_CPU_IXP46X is not set, "subs" will set the Z flag and return
o if CONFIG_CPU_IXP46X is set, codes in upper interrupt handling will be trigerred. But since this is not supper interrupt, the "cmp" in the upper interrupt handling portion will set the Z flag and return

Signed-off-by: Kenneth Tan <chong.yin.tan@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-18 07:53:35 +01:00
Kenneth Tan
ad1b472bea [ARM] 3020/1: Fixes typo error CONFIG_CPU_IXP465, which should be CONFIG_CPU_IXP46X
Patch from Kenneth Tan

The cpu_is_ixp465 macro in include/asm-arm/arch-ixp4xx/hardware.h is always returning 0 because #ifdef CONFIG_CPU_IXP465 is always false.

Signed-off-by: Kenneth Tan <chong.yin.tan@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-18 07:51:35 +01:00
Nicolas Pitre
9b15c6c4e2 [ARM] 3019/1: fix wrong comments
Patch from Nicolas Pitre

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-18 07:51:34 +01:00
Stephen Rothwell
81e7009ea4 powerpc: merge ppc signal.c and ppc64 signal32.c
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-18 11:17:58 +10:00
Zach Brown
4faa528528 [PATCH] aio: revert lock_kiocb()
lock_kiocb() was introduced to serialize retrying and cancellation.  In the
process of doing so it tried to sleep waiting for KIF_LOCKED while holding
the ctx_lock spinlock.  Recent fixes have ensured that multiple concurrent
retries won't be attempted for a given iocb.  Cancel has other problems and
has no significant in-tree users that have been complaining about it.  So
for the immediate future we'll revert sleeping with the lock held and will
address proper cancellation and retry serialization in the future.

Signed-off-by: Zach Brown <zach.brown@oracle.com>
Acked-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-17 17:03:57 -07:00
Eric Dumazet
5ee832dbc6 [PATCH] rcu: keep rcu callback event counter
This makes call_rcu() keep track of how many events there are on the RCU
list, and cause a reschedule event when the list gets too long.

This helps keep RCU event lists down.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-17 15:27:58 -07:00
Herbert Xu
b24d18aa74 [PATCH] list: add missing rcu_dereference on first element
It seems that all the list_*_rcu primitives are missing a memory barrier
on the very first dereference.  For example,

#define list_for_each_rcu(pos, head) \
	for (pos = (head)->next; prefetch(pos->next), pos != (head); \
		pos = rcu_dereference(pos->next))

It will go something like:

	pos = (head)->next

	prefetch(pos->next)

	pos != (head)

	do stuff

We're missing a barrier here.

	pos = rcu_dereference(pos->next)

		fetch pos->next

		barrier given by rcu_dereference(pos->next)

		store pos

Without the missing barrier, the pos->next value may turn out to be stale.
In fact, if "do stuff" were also dereferencing pos and relying on
list_for_each_rcu to provide the barrier then it may also break.

So here is a patch to make sure that we have a barrier for the first
element in the list.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-17 08:59:10 -07:00
Paul Mackerras
7ac59c6249 ppc: Fix various compile errors resulting from ptrace.c merge
This introduces flush_{fp,altivec,spe}_to_thread and fixes a
branch-too-far error in linking.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-17 20:12:39 +10:00
Stephen Rothwell
7dffb72028 ppc32: use L1_CACHE_SHIFT/L1_CACHE_BYTES
instead of L1_CACHE_LINE_SIZE and LG_L1_CACHE_LINE_SIZE

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-17 11:50:32 +10:00
Stephen Rothwell
cf76485562 powerpc: fix 32bit LOADADDR macro
I forgot a semicolon.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-17 11:46:53 +10:00
Al Viro
688ce17b85 [PATCH]: highest_possible_processor_id() has to be a macro
... otherwise, things like alpha and sparc64 break and break
badly.  They define cpu_possible_map to something else in smp.h
*AFTER* having included cpumask.h.

	If that puppy is a macro, expansion will happen at the actual
caller, when we'd already seen #define cpu_possible_map ... and we will
get the right thing used.

	As an inline helper it will be tokenized before we get to that
define and that's it; no matter what we define later, it won't affect
anything.  We get modules with dependency on cpu_possible_map instead
of the right symbol (phys_cpu_present_map in case of sparc64), or outright
link errors if they are built-in.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-10-16 00:17:33 -07:00
Linus Torvalds
f8cc5756de Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 2005-10-14 17:17:04 -07:00
Linus Torvalds
9e04099cb9 Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-10-14 17:16:35 -07:00
Tim Schmielau
e26148d934 [PATCH] Fix copy-and-paste error in BSD accounting
Fix copy and paste error in jiffies_to_AHZ conversion which leads to wrong
BSD accounting information on alpha and ia64 when
CONFIG_BSD_PROCESS_ACCT_V3 is turned on.

Also update comment to match reorganised header files.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-14 17:10:12 -07:00
Richard Purdie
cb38c569e5 [ARM] 3011/1: pxafb: Add ability to set device parent + fix spitz compile error
Patch from Richard Purdie

Add a function to allow machines to set the parent of the pxa
framebuffer device. This means the power up/down sequence can be
controlled where required by the machine.

Update spitz to use the new function, fixing a compile error.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-14 16:07:25 +01:00
Ben Dooks
6205d158d1 [ARM] 3009/1: S3C2410 - io.h offsets too large for LDRH/STRH
Patch from Ben Dooks

The __inwc/__outwc calls are capable of creating
LDRH and STRH instructions with offsets over 8bits
as GCC does not have a constraint for an 8bit
offset.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-14 12:24:24 +01:00
Stephen Rothwell
c6d2ea92d1 powerpc: move iSeries/HvCallPci.h to platforms/iseries/call_pci.h
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-14 17:16:17 +10:00
Stephen Rothwell
0e29bb1a4e powerpc: move iSeries/HvCallHpt.h to platforms/iseries/call_hpt.h
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-14 17:09:16 +10:00
Stephen Rothwell
20f48ccfa0 powerpc: eliminate DsaAddr from pci_dn
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-14 16:49:58 +10:00
David S. Miller
688cb30bdc [SPARC64]: Eliminate PCI IOMMU dma mapping size limit.
The hairy fast allocator in the sparc64 PCI IOMMU code
has a hard limit of 256 pages.  Certain devices can
exceed this when performing very large I/Os.

So replace with a more simple allocator, based largely
upon the arch/ppc64/kernel/iommu.c code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-10-13 22:15:24 -07:00
Stephen Rothwell
426c1a11a6 powerpc: move iSeries/iSeries_pci.h to platforms/iseries
The only real user of this file outside platforms/iseries was
drivers/net/iseries_veth.c but all it wanted was ISERIES_HV_ADDR()
so we move that to abs_addr.h (and lowercase it).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-14 14:51:42 +10:00
David S. Miller
51e8513615 [SPARC64]: Consolidate common PCI IOMMU init code.
All the PCI controller drivers were doing the same thing
setting up the IOMMU software state, put it all in one spot.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-10-13 21:10:08 -07:00
David S. Miller
c8923c6b85 [NETFILTER]: Fix OOPSes on machines with discontiguous cpu numbering.
Original patch by Harald Welte, with feedback from Herbert Xu
and testing by Sébastien Bernard.

EBTABLES, ARP tables, and IP/IP6 tables all assume that cpus
are numbered linearly.  That is not necessarily true.

This patch fixes that up by calculating the largest possible
cpu number, and allocating enough per-cpu structure space given
that.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-10-13 14:41:23 -07:00