Commit Graph

617 Commits

Author SHA1 Message Date
Stephen Rothwell 581b605a83 Consolidate of_find_property
The only change here is that a readlock is taken while the property list
is being traversed on Sparc where it was not taken previously.

Also, Sparc uses strcasecmp to compare property names while PowerPC
uses strcmp.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:32:24 +10:00
Stephen Rothwell 0081cbc373 Consolidate of_device_is_compatible
The only difference here is that Sparc uses strncmp to match compatibility
names while PowerPC uses strncasecmp.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:29:51 +10:00
Stephen Rothwell 97e873e5c8 Start split out of common open firmware code
This creates drivers/of/base.c (depending on CONFIG_OF) and puts
the first trivially common bits from the prom.c files into it.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:28:41 +10:00
Stephen Rothwell 76c1ce7870 Split out common parts of prom.h
This creates linux/of.h and includes asm/prom.h from it.

We also include linux/of.h from asm/prom.h while we transition.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
2007-07-20 13:10:22 +10:00
Ralf Baechle c41917df8a [PATCH] sched: sched_cacheflush is now unused
Since Ingo's recent scheduler rewrite which was merged as commit
0437e109e1 sched_cacheflush is unused.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-19 21:28:35 +02:00
Peter Zijlstra b111757c50 arch: personality independent stack top
New arch macro STACK_TOP_MAX it gives the larges valid stack address for the
architecture in question.

It differs from STACK_TOP in that it will not distinguish between
personalities but will always return the largest possible address.

This is used to create the initial stack on execve, which we will move down to
the proper location once the binfmt code has figured out where that is.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ollie Wild <aaw@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:45 -07:00
Fenghua Yu 5fb7dc37dc define new percpu interface for shared data
per cpu data section contains two types of data.  One set which is
exclusively accessed by the local cpu and the other set which is per cpu,
but also shared by remote cpus.  In the current kernel, these two sets are
not clearely separated out.  This can potentially cause the same data
cacheline shared between the two sets of data, which will result in
unnecessary bouncing of the cacheline between cpus.

One way to fix the problem is to cacheline align the remotely accessed per
cpu data, both at the beginning and at the end.  Because of the padding at
both ends, this will likely cause some memory wastage and also the
interface to achieve this is not clean.

This patch:

Moves the remotely accessed per cpu data (which is currently marked
as ____cacheline_aligned_in_smp) into a different section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:44 -07:00
Michael Ellerman 9e367d8592 jprobes: remove JPROBE_ENTRY()
AFAICT now that jprobe.entry is a void *, JPROBE_ENTRY doesn't do anything
useful - so remove it ..

I've left a do-nothing version so that out-of-tree jprobes code will still
compile without modifications.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:44 -07:00
Stephen Rothwell 0785b9dcdc [SPARC]: Mark sparc and sparc64 as not having virt_to_bus
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:20:22 -07:00
David S. Miller 6160f63518 [SPARC64]: Massively simplify VIO device layer and support hot add/remove.
Create and destroy VIO devices in response to MD update events.  These
run synchronously inside of the MD update mutex so the VIO layer
doesn't need to do internal locking of any sort.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:20:04 -07:00
David S. Miller 920c3ed741 [SPARC64]: Add basic infrastructure for MD add/remove notification.
And add dummy handlers for the VIO device layer.  These will be filled
in with real code after the vdc, vnet, and ds drivers are reworked to
have simpler dependencies on the VIO device tree.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-18 01:19:51 -07:00
Antonino A. Daplas 317b3c2167 fbdev: detect primary display device
Add function helper, fb_is_primary_device().  Given struct fb_info, it will
return a nonzero value if the device is the primary display.

Currently, only the i386 is supported where the function checks for the
IORESOURCE_ROM_SHADOW flag.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:11 -07:00
Antonino A. Daplas 10eb2659cc fbdev: move arch-specific bits to their respective subdirectories
Move arch-specific bits of fb_mmap() to their respective subdirectories

[bob.picco@hp.com: efi_range_is_wc is referenced but not declared]
[bunk@stusta.de: fix include/asm-m68k/fb.h]
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:11 -07:00
Linus Torvalds 02b2318e07 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (26 commits)
  [SPARC64]: Fix UP build.
  [SPARC64]: dr-cpu unconfigure support.
  [SERIAL]: Fix console write locking in sparc drivers.
  [SPARC64]: Give more accurate errors in dr_cpu_configure().
  [SPARC64]: Clear cpu_{core,sibling}_map[] in smp_fill_in_sib_core_maps()
  [SPARC64]: Fix leak when DR added cpu does not bootup.
  [SPARC64]: Add ->set_affinity IRQ handlers.
  [SPARC64]: Process dr-cpu events in a kthread instead of workqueue.
  [SPARC64]: More sensible udelay implementation.
  [SPARC64]: SMP build fixes.
  [SPARC64]: mdesc.c needs linux/mm.h
  [SPARC64]: Fix build regressions added by dr-cpu changes.
  [SPARC64]: Unconditionally register vio_bus_type.
  [SPARC64]: Initial LDOM cpu hotplug support.
  [SPARC64]: Fix setting of variables in LDOM guest.
  [SPARC64]: Fix MD property lifetime bugs.
  [SPARC64]: Abstract out mdesc accesses for better MD update handling.
  [SPARC64]: Use more mearningful names for IRQ registry.
  [SPARC64]: Initial domain-services driver.
  [SPARC64]: Export powerd facilities for external entities.
  ...
2007-07-16 10:45:23 -07:00
Arnd Bergmann 4b7775870b Introduce compat_u64 and compat_s64 types
One common problem with 32 bit system call and ioctl emulation is the
different alignment rules between i386 and 64 bit machines.  A number of
drivers work around this by marking the compat structures as
'attribute((packed))', which is not the right solution because it breaks
all the non-x86 architectures that want to use the same compat code.

Hopefully, this patch improves the situation, it introduces two new types,
compat_u64 and compat_s64.  These are defined on all architectures to have
the same size and alignment as the 32 bit version of u64 and s64.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Vasily Tarasov <vtaras@openvz.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:48 -07:00
Jan Beulich 45e98cdb6d page table handling cleanup
Kill pte_rdprotect(), pte_exprotect(), pte_mkread(), pte_mkexec(), pte_read(),
pte_exec(), and pte_user() except where arch-specific code is making use of
them.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:36 -07:00
David S. Miller e0204409df [SPARC64]: dr-cpu unconfigure support.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:32 -07:00
David S. Miller 8b99cfb8cc [SPARC64]: More sensible udelay implementation.
Take a page from the powerpc folks and just calculate the
delay factor directly.

Since frequency scaling chips use a system-tick register,
the value is going to be the same system-wide.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:05:02 -07:00
David S. Miller b14f5c100c [SPARC64]: Fix build regressions added by dr-cpu changes.
Do not select HOTPLUG_CPU from SUN_LDOMS, that causes
HOTPLUG_CPU to be selected even on non-SMP which is
illegal.

Only build hvtramp.o when SMP, just like trampoline.o

Protect dr-cpu code in ds.c with HOTPLUG_CPU.

Likewise move ldom_startcpu_cpuid() to smp.c and protect
it and the call site with SUN_LDOMS && HOTPLUG_CPU.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:49 -07:00
David S. Miller 4f0234f4f9 [SPARC64]: Initial LDOM cpu hotplug support.
Only adding cpus is supports at the moment, removal
will come next.

When new cpus are configured, the machine description is
updated.  When we get the configure request we pass in a
cpu mask of to-be-added cpus to the mdesc CPU node parser
so it only fetches information for those cpus.  That code
also proceeds to update the SMT/multi-core scheduling bitmaps.

cpu_up() does all the work and we return the status back
over the DS channel.

CPUs via dr-cpu need to be booted straight out of the
hypervisor, and this requires:

1) A new trampoline mechanism.  CPUs are booted straight
   out of the hypervisor with MMU disabled and running in
   physical addresses with no mappings installed in the TLB.

   The new hvtramp.S code sets up the critical cpu state,
   installs the locked TLB mappings for the kernel, and
   turns the MMU on.  It then proceeds to follow the logic
   of the existing trampoline.S SMP cpu bringup code.

2) All calls into OBP have to be disallowed when domaining
   is enabled.  Since cpus boot straight into the kernel from
   the hypervisor, OBP has no state about that cpu and therefore
   cannot handle being invoked on that cpu.

   Luckily it's only a handful of interfaces which can be called
   after the OBP device tree is obtained.  For example, rebooting,
   halting, powering-off, and setting options node variables.

CPU removal support will require some infrastructure changes
here.  Namely we'll have to process the requests via a true
kernel thread instead of in a workqueue.  workqueues run on
a per-cpu thread, but when unconfiguring we might need to
force the thread to execute on another cpu if the current cpu
is the one being removed.  Removal of a cpu also causes the kernel
to destroy that cpu's workqueue running thread.

Another issue on removal is that we may have interrupts still
pointing to the cpu-to-be-removed.  So new code will be needed
to walk the active INO list and retarget those cpus as-needed.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:40 -07:00
David S. Miller b3e13fbeb9 [SPARC64]: Fix setting of variables in LDOM guest.
There is a special domain services capability for setting
variables in the OBP options node.  Guests don't have permanent
store for the OBP variables like a normal system, so they are
instead maintained in the LDOM control node or in the SC.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:36 -07:00
David S. Miller 83292e0a9c [SPARC64]: Fix MD property lifetime bugs.
Property values cannot be referenced outside of
mdesc_grab()/mdesc_release() pairs.  The only major
offender was the VIO bus layer, easily fixed.

Add some commentary to mdesc.h describing these rules.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:33 -07:00
David S. Miller 43fdf27470 [SPARC64]: Abstract out mdesc accesses for better MD update handling.
Since we have to be able to handle MD updates, having an in-tree
set of data structures representing the MD objects actually makes
things more painful.

The MD itself is easy to parse, and we can implement the existing
interfaces using direct parsing of the MD binary image.

The MD is now reference counted, so accesses have to now take the
form:

	handle = mdesc_grab();

	... operations on MD ...

	mdesc_release(handle);

The only remaining issue are cases where code holds on to references
to MD property values.  mdesc_get_property() returns a direct pointer
to the property value, most cases just pull in the information they
need and discard the pointer, but there are few that use the pointer
directly over a long lifetime.  Those will be fixed up in a subsequent
changeset.

A preliminary handler for MD update events from domain services is
there, it is rudimentry but it works and handles all of the reference
counting.  It does not check the generation number of the MDs,
and it does not generate a "add/delete" list for notification to
interesting parties about MD changes but that will be forthcoming.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:28 -07:00
David S. Miller 133f09a169 [SPARC64]: Use more mearningful names for IRQ registry.
All of the interrupts say "LDX RX" and "LDX TX" currently
which is next to useless.  Put a device specific prefix
before "RX" and "TX" instead which makes it much more
useful.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:24 -07:00
David S. Miller 13077d8028 [SPARC64]: Export powerd facilities for external entities.
Besides the existing usage for power-button interrupts, we'll
want to make use of this code for domain-services where the
LDOM manager can send reboot requests to the guest node.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:16 -07:00
David S. Miller cb48123584 [SPARC64]: Assorted LDC bug cures.
1) LDC_MODE_RELIABLE is deprecated an unused by anything, plus
   it and LDC_MODE_STREAM were mis-numbered.

2) read_stream() should try to read as much as possible into
   the per-LDC stream buffer area, so do not trim the read_nonraw()
   length by the caller's size parameter.

3) Send data ACKs when necessary in read_nonraw().

4) In read_nonraw() when we get a pure ACK, advance the RX head
   unconditionally past it.

5) Provide the ACKID field in the ldcdgb() packet dump in read_nonraw().
   This helps debugging stream mode LDC channel problems.

6) Decrease verbosity of rx_data_wait() so that it is more useful.
   A debugging message each loop iteration is too much.

7) In process_data_ack() stop the loop checking when we hit lp->tx_tail
   not lp->tx_head.

8) Set the seqid field properly in send_data_nack().

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:09 -07:00
David S. Miller e53e97ce3c [SPARC64]: Add LDOM virtual channel driver and VIO device layer.
Virtual devices on Sun Logical Domains are built on top
of a virtual channel framework.  This, with help of hypervisor
interfaces, provides a link layer protocol with basic
handshaking over which virtual device clients and servers
communicate.

Built on top of this is a VIO device protocol which has it's
own handshaking and message types.  At this layer attributes
are exchanged (disk size, network device addresses, etc.)
descriptor rings are registered, and data transfers are
triggers and replied to.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:03:18 -07:00
Jan Beulich caa5171622 PCI: remove pci_dac_dma_... APIs
Based on replies to a respective query, remove the pci_dac_dma_...() APIs
(except for pci_dac_dma_supported() on Alpha, where this function is used
in non-DAC PCI DMA code).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Jesse Barnes <jesse.barnes@intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Acked-by: David Miller <davem@davemloft.net>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:11 -07:00
Michael Ellerman 575e3348cb PCI: Use a weak symbol for the empty version of pcibios_add_platform_entries()
I'm not sure if this is going to fly, weak symbols work on the compilers I'm
using, but whether they work for all of the affected architectures I can't say.
I've cc'ed as many arch maintainers/lists as I could find.

But assuming they do, we can use a weak empty definition of
pcibios_add_platform_entries() to avoid having an empty definition on every
arch.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:07 -07:00
Alexey Dobriyan 9f462a1a5d [SPARC64]: Add linux/pagemap.h to asm/tlb.h
As seen on sparc64-allnoconfig:

  CC      arch/sparc64/mm/tlb.o
In file included from arch/sparc64/mm/tlb.c:19:
include/asm/tlb.h: In function 'tlb_flush_mmu':
include/asm/tlb.h:60: warning: implicit declaration of function 'release_pages'
include/asm/tlb.h: In function 'tlb_remove_page':
include/asm/tlb.h:92: warning: implicit declaration of function 'page_cache_release'

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-28 21:25:31 -07:00
David S. Miller 701271dfd2 [SPARC64]: Add irqs to mdesc_node.
Will be used to store translated LDC rx-ino and tx-ino.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-26 00:11:56 -07:00
David S. Miller fc395f8d58 [SPARC64]: Fix args to sun4v_ldc_revoke().
First argument is LDC channel ID, then mapping cookie,
then the MTE revoke cookie.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-13 00:01:27 -07:00
David S. Miller f467b998ee [SPARC64]: Really fix parport.
We were passing a "struct pci_dev *" instead of a
"struct device *" to the parport registry routines.
No wonder things exploded.

The ebus_bus_type hacks can be backed out from
asm-sparc64/dma-mapping.h, those were wrong.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-13 00:01:24 -07:00
David S. Miller 4a907dec98 [SPARC64]: Wire up cookie based sun4v interrupt registry.
This will be used for logical domain channel interrupts.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-13 00:01:04 -07:00
David S. Miller f04dbac262 [SPARC64]: Fill in gaps in non-PCI dma_*() NOP implementation.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 23:32:23 -07:00
David S. Miller a2f9f6bbb3 [SPARC64]: Fix {mc,smt}_capable().
It's not just sun4v hypervisor platforms that should return true
for this, sun4u with UltraSPARC-IV should return true too.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:50:05 -07:00
David S. Miller f78eae2e6f [SPARC64]: Proper multi-core scheduling support.
The scheduling domain hierarchy is:

   all cpus -->
      cpus that share an instruction cache -->
          cpus that share an integer execution unit

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:50:00 -07:00
David Miller d887ab3a9b [SPARC64]: Provide mmu statistics via sysfs.
If the system supports hypervisor based statistics, allow them to
be fetched, enabled, and disabled via sysfs.

Enable and disable via the boolean:

/sys/devices/systems/cpu/cpuN/mmustat_enable

Statistic values are provided under:

/sys/devices/systems/cpu/cpuN/mmu_status/

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-04 21:49:57 -07:00
David S. Miller dbbe3cb8cf [SPARC64]: Add missing NCS and SVC hypervisor interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-31 01:52:48 -07:00
David S. Miller 7db35f31cb [SPARC64]: Fill holes in hypervisor APIs and fix KTSB registry.
Several interfaces were missing and others misnumbered or
improperly documented.

Also, make sure to check the return value when registering
the kernel TSBs with the hypervisor.  This helped to find
the 4MB kernel TSB alignment bug fixed in a previous changeset.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:52:15 -07:00
David S. Miller 2d9e2763c2 [SPARC64]: Fix two bugs wrt. kernel 4MB TSB.
1) The TSB lookup was not using the correct hash mask.

2) It was not aligned on a boundary equal to it's size,
   which is required by the sun4v Hypervisor.

wasn't having it's return value checked, and that bug will be fixed up
as well in a subsequent changeset.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:51:38 -07:00
David S. Miller 22adb358e8 [SPARC64]: Eliminate NR_CPUS limitations.
Cheetah systems can have cpuids as large as 1023, although physical
systems don't have that many cpus.

Only three limitations existed in the kernel preventing arbitrary
NR_CPUS values:

1) dcache dirty cpu state stored in page->flags on
   D-cache aliasing platforms.  With some build time
   calculations and some build-time BUG checks on
   page->flags layout, this one was easily solved.

2) The cheetah XCALL delivery code could only handle
   a cpumask with up to 32 cpus set.  Some simple looping
   logic clears that up too.

3) thread_info->cpu was a u8, easily changed to a u16.

There are a few spots in the kernel that still put NR_CPUS
sized arrays on the kernel stack, but that's not a sparc64
specific problem.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:49 -07:00
David S. Miller 5cbc307373 [SPARC64]: Use machine description and OBP properly for cpu probing.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:41 -07:00
David S. Miller 22d6a1cba3 [SPARC64]: Report proper system soft state to the hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:29 -07:00
Christoph Hellwig a1aadd55fb [SPARC64]: Kill unused DIE_PAGE_FAULT enum value.
sparc64 got rid of the pagefault notifiers, so the enum value for them
can go away aswell.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-29 02:49:14 -07:00
David S. Miller c7754d465b [SPARC64]: Add hypervisor API negotiation and fix console bugs.
Hypervisor interfaces need to be negotiated in order to use
some API calls reliably.  So add a small set of interfaces
to request API versions and query current settings.

This allows us to fix some bugs in the hypervisor console:

1) If we can negotiate API group CORE of at least major 1
   minor 1 we can use con_read and con_write which can improve
   console performance quite a bit.

2) When we do a console write request, we should hold the
   spinlock around the whole request, not a byte at a time.
   What would happen is that it's easy for output from
   different cpus to get mixed with each other.

3) Use consistent udelay() based polling, udelay(1) each
   loop with a limit of 1000 polls to handle stuck hypervisor
   console.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-15 20:23:02 -07:00
David S. Miller 9ac6d4a4b8 [SPARC64]: Accept ebus_bus_type for generic DMA ops.
Based upon a bug report by Meelis Roos.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-14 02:56:03 -07:00
David S. Miller 8354c5b726 [SPARC]: Wire up signalfd/timerfd/eventfd syscalls.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-11 22:06:51 -07:00
Stephen Rothwell 04dd08b45b Consolidate asm/poll.h
These files are almost all the same.

This patch could be made even simpler if we don't mind POLLREMOVE turning
up in a few architectures that didn't have it previously (which should be
OK as POLLREMOVE is not used anywhere in the current tree).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11 08:29:34 -07:00
Linus Torvalds 0ab598099c Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Use alloc_pci_dev() in PCI bus probes.
  [SPARC64]: Bump PROMINTR_MAX to 32.
  [SPARC64]: Fix recursion in PROM tree building.
  [SERIAL] sunzilog: Interrupt enable before ISR handler installed
  [SPARC64] PCI: Consolidate PCI access code into pci_common.c
2007-05-10 13:32:05 -07:00
David S. Miller 9245df0cd3 [SPARC64]: Bump PROMINTR_MAX to 32.
Some devices have more than 15 which was the previous
setting.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-10 00:55:59 -07:00
Fernando Luis Vazquez Cao 2f4dfe206a Remove hardcoding of hard_smp_processor_id on UP systems
With the advent of kdump, the assumption that the boot CPU when booting an UP
kernel is always the CPU with a particular hardware ID (often 0) (usually
referred to as BSP on some architectures) is not valid anymore.  The reason
being that the dump capture kernel boots on the crashed CPU (the CPU that
invoked crash_kexec), which may be or may not be that particular CPU.

Move definition of hard_smp_processor_id for the UP case to
architecture-specific code ("asm/smp.h") where it belongs, so that each
architecture can provide its own implementation.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Andi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:48 -07:00
David S. Miller 127cda1e8c [SPARC64]: Optimize fault kprobe handling just like powerpc.
And eliminate DIE_GPF while we're at it.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 18:25:14 -07:00
David S. Miller 6c1142602c [SPARC]: Wire up utimensat syscall.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 17:50:14 -07:00
David S. Miller c57c2ffb15 [SPARC64]: Kill asm-sparc64/pbm.h
Everything it contains can be hidden in pci_impl.h

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:43:08 -07:00
David S. Miller 6c108f1299 [SPARC64]: Move index info pci_pbm_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:40 -07:00
David S. Miller e9870c4c0a [SPARC64]: Move {setup,teardown}_msi_irq into pci_pbm_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:36 -07:00
David S. Miller f1cd8de2c9 [SPARC64]: Move pci_ops into pci_pbm_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:32 -07:00
David S. Miller 34768bc832 [SPARC64] PCI: Use root list of pbm's instead of pci_controller_info's
The idea is to move more and more things into the pbm,
with the eventual goal of eliminating the pci_controller_info
entirely as there really isn't any need for it.

This stage of the transformations requires some reworking of
the PCI error interrupt handling.

It might be tricky to get rid of the pci_controller_info parenting for
a few reasons:

1) When we get an uncorrectable or correctable error we want
   to interrogate the IOMMU and streaming cache of both
   PBMs for error status.  These errors come from the UPA
   front-end which is shared between the two PBM PCI bus
   segments.

   Historically speaking this is why I choose the datastructure
   hierarchy of pci_controller_info-->pci_pbm_info

2) The probing does a portid/devhandle match to look for the
   'other' pbm, but this is entirely an artifact and can be
   eliminated trivially.

What we could do to solve #1 is to have a "buddy" pointer from one pbm
to another.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:24 -07:00
David S. Miller 5a4a3e592d [SPARC64] PCI: Kill PROM_PCIRNG_MAX and PROM_PCIIMAP_MAX.
They are totally unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:20 -07:00
David S. Miller cfa0652c4e [SPARC64] PCI: Use common routine to fetch PBM properties.
Namely bus-range and ino-bitmap.

This allows us also to eliminate pci_controller_info's
pci_{first,last}_busno fields as only the pbm ones are
used now.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-08 16:41:12 -07:00
Jeff Dike 5dc12ddee9 Remove tas()
tas() has no users, so get rid of it.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: <linux-arch@vger.kernel.org>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:20 -07:00
Mathieu Desnoyers 469b50b622 local_t: sparc64 cleanup
sparc64 local_t cleanup : simply use asm-generic/local.h.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:20 -07:00
Mathieu Desnoyers 2856f5e31c atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency
atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
I agree (with Andi Kleen) this typeof is not needed and more error
prone. All the original atomic.h code that uses cmpxchg (which includes
the atomic_add_unless) uses defines instead of inline functions,
probably to circumvent a circular dependency between system.h and
atomic.h on powerpc (which my patch addresses). Therefore, it makes
sense to use inline functions that will provide type checking.

atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
Digging into the FRV architecture shows me that it is also affected by
such a circular dependency. Here is the diff applying this against the
rest of my atomic.h patches.

It applies over the atomic.h standardization patches.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:20 -07:00
Mathieu Desnoyers 2549c8589c atomic.h: add atomic64 cmpxchg, xchg and add_unless to sparc64
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:19 -07:00
Randy Dunlap 6df95fd7ad consolidate asm/const.h to linux/const.h
Make a global linux/const.h header file instead of having multiple,
per-arch files, and convert current users of asm/const.h to use
linux/const.h.

Built on x86_64 and sparc64.

[akpm@linux-foundation.org: fix include/asm-x86_64/Kbuild]
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:13 -07:00
Christoph Hellwig 1eeb66a1bb move die notifier handling to common code
This patch moves the die notifier handling to common code.  Previous
various architectures had exactly the same code for it.  Note that the new
code is compiled unconditionally, this should be understood as an appel to
the other architecture maintainer to implement support for it aswell (aka
sprinkling a notify_die or two in the proper place)

arm had a notifiy_die that did something totally different, I renamed it to
arm_notify_die as part of the patch and made it static to the file it's
declared and used at.  avr32 used to pass slightly less information through
this interface and I brought it into line with the other architectures.

[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix vmalloc_sync_all bustage]
[bryan.wu@analog.com: fix vmalloc_sync_all in nommu]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:04 -07:00
Linus Torvalds ef93127e4c Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SERIAL] sunsu: Fix section mismatch warnings.
  [SPARC64]: pgtable_cache_init() should be __init.
  [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/prom.c
  [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/pci.c
  [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/console.c
  [MM]: sparse_init() should be __init.
  [SPARC64]: Update defconfig.
  [VIDEO]: Add Sun XVR-2500 framebuffer driver.
  [VIDEO]: Add Sun XVR-500 framebuffer driver.
  [SPARC64]: SUN4U PCI-E controller support.
  [SPARC]: Fix comment typo in smp4m_blackbox_current().
  [SCSI] SUNESP: sun_esp.c needs linux/delay.h

Fix up conflict in arch/sparc64/mm/init.c manually due to removal of
pgtable_cache_init() through the -mm patches (even though that patch was
also by David ;)

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:22:48 -07:00
David Miller 3a2cba993b Quicklist support for sparc64
I ported this to sparc64 as per the patch below, tested on UP SunBlade1500 and
24 cpu Niagara T1000.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:54 -07:00
David S. Miller 861fe90656 [SPARC64]: SUN4U PCI-E controller support.
Some minor refactoring in the generic code was necessary for
this:

1) This controller requires 8-byte access to the interrupt map
   and clear register.  They are 64-bits on all the other
   SBUS and PCI controllers anyways, so this was easy to cure.

2) The IMAP register has a different layout and some bits that we
   need to preserve, so use a read/modify/write when making
   changes to the IMAP register in generic code.

3) Flushing the entire IOMMU TLB is best done with a single write
   to a register on this PCI controller, add a iommu->iommu_flushinv
   for this.

Still lacks MSI support, that will come later.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-06 22:44:06 -07:00
Linus Torvalds ea62ccd00f Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
  [PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
  [PATCH] i386: type may be unused
  [PATCH] i386: Some additional chipset register values validation.
  [PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
  [PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
  [PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
  [PATCH] i386: white space fixes in i387.h
  [PATCH] i386: Drop noisy e820 debugging printks
  [PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
  [PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
  [PATCH] x86-64: Share identical video.S between i386 and x86-64
  [PATCH] x86-64: Remove CONFIG_REORDER
  [PATCH] x86-64: Print type and size correctly for unknown compat ioctls
  [PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
  [PATCH] i386: Little cleanups in smpboot.c
  [PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
  [PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
  [PATCH] i386: Add X86_FEATURE_RDTSCP
  [PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
  [PATCH] i386: Implement alternative_io for i386
  ...

Fix up trivial conflict in include/linux/highmem.h manually.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-05 14:55:20 -07:00
Jean Delvare a9dfd281a7 PCI: scatterlist.h needs types.h
Most architectures' scatterlist.h use the type dma_addr_t, but omit to
include <asm/types.h> which defines it.  This could lead to build failures,
so let's add the missing includes.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:34 -07:00
Jeremy Fitzhardinge d6dd61c831 [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction
Add hooks to allow a paravirt implementation to track the lifetime of
an mm.  Paravirtualization requires three hooks, but only two are
needed in common code.  They are:

arch_dup_mmap, which is called when a new mmap is created at fork

arch_exit_mmap, which is called when the last process reference to an
  mm is dropped, which typically happens on exit and exec.

The third hook is activate_mm, which is called from the arch-specific
activate_mm() macro/function, and so doesn't need stub versions for
other architectures.  It's called when an mm is first used.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: linux-arch@vger.kernel.org
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
2007-05-02 19:27:14 +02:00
Jeremy Fitzhardinge b00742d399 [PATCH] x86-64: Account for module percpu space separately from kernel percpu
Rather than using a single constant PERCPU_ENOUGH_ROOM, compute it as
the sum of kernel_percpu + PERCPU_MODULE_RESERVE.  This is now common
to all architectures; if an architecture wants to set
PERCPU_ENOUGH_ROOM to something special, then it may do so (ia64 is
the only one which does).

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Andi Kleen <ak@suse.de>
2007-05-02 19:27:11 +02:00
Linus Torvalds 0278ef8b48 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (67 commits)
  [SCSI] SUNESP: Complete driver rewrite to version 2.0
  [SPARC64]: Convert PCI over to generic struct iommu/strbuf.
  [SPARC]: device_node name constification fallout
  [SPARC64]: Convert SBUS over to generic iommu/strbuf structs.
  [SPARC64]: Add generic iommu and strbuf structs to iommu.h
  [SPARC64]: Consolidate {sbus,pci}_iommu_arena.
  [SPARC]: Make device_node name and type const
  [SPARC64]: constify some paramaters of OF routines
  [TIGON3]: of_get_property() returns const.
  [SPARC64]: Fix PCI rework to adhere to of_get_property() const return.
  [SPARC64]: Document and fix calculation of pages_avail.
  [SPARC64]: Make sure pbm->prom_node is setup easly enough in psycho.c
  [SPARC64]: Use bootmem_bootmap_pages() in choose_bootmap_pfn().
  [SPARC64]: Add proper header file extern for cmdline_memory_size.
  [SPARC64]: Kill sparc_ultra_dump_{i,d}tlb()
  [SPARC64]: Use DECLARE_BITMAP and BITS_TO_LONGS in mm/init.c
  [SPARC64]: Give move verbose show_mem() output just like i386.
  [SPARC64]: Mark show_mem() printk's with KERN_INFO.
  [SPARC64]: Kill kvaddr_to_phys() and friends.
  [SPARC64]: Privatize sun4u_get_pte() and fix name.
  ...
2007-04-27 09:29:04 -07:00
David S. Miller 16ce82d846 [SPARC64]: Convert PCI over to generic struct iommu/strbuf.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 21:08:21 -07:00
David S. Miller 6687508809 [SPARC64]: Add generic iommu and strbuf structs to iommu.h
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:43 -07:00
David S. Miller 9b3627f389 [SPARC64]: Consolidate {sbus,pci}_iommu_arena.
Move to asm-sparc64/iommu.h and rename to plain "iommu_arena".

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:42 -07:00
Stephen Rothwell 711b360d64 [SPARC]: Make device_node name and type const
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:41 -07:00
Stephen Rothwell 3dfe10ee7c [SPARC64]: constify some paramaters of OF routines
This starts bringing the PowerPC and Sparc64 implemetations back closer
together.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:40 -07:00
David S. Miller b93f262023 [SPARC64]: Add proper header file extern for cmdline_memory_size.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:33 -07:00
David S. Miller 4be5c34dc4 [SPARC64]: Privatize sun4u_get_pte() and fix name.
__get_phys is only called from init.c as is prom_virt_to_phys(),
__get_iospace() is not called at all, and sun4u_get_pte() is largely
misnamed.

Privatize the implementation and helper functions of
sun4u_get_phys() to mm/init.c, and rename to
kvaddr_to_paddr().

The only used of this thing is flush_icache_range(), and thus
things can be considerably further simplified.  For example,
we should only see module or PAGE_OFFSET kernel addresses here,
so we don't need the OBP firmware range handling at all.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:26 -07:00
David S. Miller 4e286d5be6 [SPARC64]: MAX_PHYSADDR_BITS et al. really need to be 42 bits not 41.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:24 -07:00
David S. Miller d78d0891d3 [SPARC64]: Use SPARSEMEM_STATIC
Decrease the SECTION_SIZE_BITS --> MAX_PHYSADDR_BITS
range a little bit.

The cost of going to SPARSEMEM_STATIC becomes 8K of BSS space, and in
return we save a pointer dereferences on every page struct lookup.
Even better we hit the main kernel image for the base address which is
in a hugepage locked TLB entry.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:22 -07:00
David S. Miller 43bed12737 [SPARC64]: Use DECLARE_BITMAP in struct pci_iommu.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:21 -07:00
David S. Miller c6e87566ea [SPARC64]: Const'ify pci_iommu_ops.
Based upon a similar patch for x86_64 written by
Stephen Hemminger.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:18 -07:00
David S. Miller 0bba2dd823 [SPARC64]: Kill pbm->pci_first_slot.
Set but never used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:17 -07:00
David S. Miller 3875c5c02d [SPARC64]: Kill pci_controller->pbms_same_domain
We don't do the "Simba APB is a PBM" bogosity for Sabre
controllers any longer, so this pbms_same_domain thing
is no longer necessary.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:16 -07:00
David S. Miller 8d3aee9375 [SPARC64]: Kill pci_controller->base_address_update().
Implemented but never actually used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:15 -07:00
David S. Miller 0bae5f81b6 [SPARC64]: Kill pci_controller->resource_adjust()
All the implementations can be identical and generic, so
no need for controller specific methods.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:14 -07:00
David S. Miller 3487a1f9e7 [SPARC64]: Kill PBM ranges software state.
It is only used in one spot and we can just fetch the
OF property right there.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:13 -07:00
David S. Miller 229177c7f3 [SPARC64]: Kill PBM intmap software state.
Set but never used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:12 -07:00
David S. Miller 1e8a8cc52d [SPARC64]: Internalize pci_memspace_mask.
The only user was bus_dvma_to_mem() which is no longer used
by any driver, so kill that, and the export of pci_memspace_mask.

The only user now is the PCI mmap support code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:07 -07:00
David S. Miller a2fb23af1c [SPARC64]: Probe PCI bus using OF device tree.
Almost entirely taken from the 64-bit PowerPC PCI code.

This allowed to eliminate a ton of cruft from the sparc64
PCI layer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:06 -07:00
David S. Miller deb66c4521 [SPARC64] isa: Convert to use pci_device_to_OF_node().
Also, do not try to compute resources by hand, instead use
the pre-computed ones in the of_device.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:05 -07:00
David S. Miller 1327e9b62f [SPARC64] ebus: Convert to use pci_device_to_OF_node().
Also, we don't need to store or use the PBM so kill that
from the linux_ebus.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:04 -07:00
Stephen Rothwell 64b94701c0 [SPARC/64]: constify of_get_property return
Finally, we actually change the functions themselves.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:35 -07:00
Stephen Rothwell 66f3cb7ccf [SPARC64] constify of_get_property return: include
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:30 -07:00
David S. Miller 112f48716d [SPARC64]: Add clocksource/clockevents support.
I'd like to thank John Stul and others for helping
me along the way.

A lot of cleanups fell out of this.  For example, the get_compare()
tick_op was totally unused, so was deleted.  And the most often used
tick_op members were grouped together for cache-friendlyness.

The sparc64 TSC is given to the kernel as a one-shot timer.

tick_ops->init_timer() simply turns off the privileged bit in
the tick register (when possible), and disables the interrupt
by setting bit 63 in the compare register.  The ->disable_irq()
op also sets this bit.

tick_ops->add_compare() is changed to:

1) Add the given delta to "tick" not to "compare"
2) Return a boolean which, if true, means that the tick
   value read after writing the compare value was found
   to have incremented past the initial tick value.  This
   mirrors logic used in the HPET driver's ->next_event()
   method.

Each tick_ops implementation also now provides a name string.
And we feed this into the clocksource and clockevents layers.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:15 -07:00
David S. Miller 777a447529 [SPARC64]: Unify timer interrupt handler.
Things were scattered all over the place, split between
SMP and non-SMP.

Unify it all so that dyntick support is easier to add.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:11 -07:00
Eric Dumazet 92f37fd2ee [NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support
Now that network timestamps use ktime_t infrastructure, we can add a new
SOL_SOCKET sockopt  SO_TIMESTAMPNS.

This command is similar to SO_TIMESTAMP, but permits transmission of
a 'timespec struct' instead of a 'timeval struct' control message.
(nanosecond resolution instead of microsecond)

Control message is labelled SCM_TIMESTAMPNS instead of SCM_TIMESTAMP

A socket cannot mix SO_TIMESTAMP and SO_TIMESTAMPNS : the two modes are
mutually exclusive.

sock_recv_timestamp() became too big to be fully inlined so I added a
__sock_recv_timestamp() helper function.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: linux-arch@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:21 -07:00
Eric Dumazet ae40eb1ef3 [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution
Now network timestamps use ktime_t infrastructure, we can add a new
ioctl() SIOCGSTAMPNS command to get timestamps in 'struct timespec'.
User programs can thus access to nanosecond resolution.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
CC: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:04 -07:00
Robert Reif d80f0a4beb [SPARC]: Add unsigned to unused bit field in a.out.h
Add unsigned to unused bit field in a.out.h to make sparse happy.

[ I took care of the sparc64 side as well -DaveM ]

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-02 14:26:21 -07:00
Mikael Pettersson 7945d5626c [SPARC]: sparc64 gcc-4.2.0 20070317 -Werror failure
Compiling 2.6.21-rc5 with gcc-4.2.0 20070317 (prerelease)
for sparc64 fails as follows:

  gcc -Wp,-MD,arch/sparc64/kernel/.time.o.d  -nostdinc -isystem /home/mikpe/pkgs/linux-sparc64/gcc-4.2.0/lib/gcc/sparc64-unknown-linux-gnu/4.2.0/include -D__KERNEL__ -Iinclude  -include include/linux/autoconf.h -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Os -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare -Wa,--undeclared-regs -fomit-frame-pointer  -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign -Werror   -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(time)"  -D"KBUILD_MODNAME=KBUILD_STR(time)" -c -o arch/sparc64/kernel/time.o arch/sparc64/kernel/time.c
cc1: warnings being treated as errors
arch/sparc64/kernel/time.c: In function 'kick_start_clock':
arch/sparc64/kernel/time.c:559: warning: overflow in implicit constant conversion
make[1]: *** [arch/sparc64/kernel/time.o] Error 1
make: *** [arch/sparc64/kernel] Error 2

gcc gets unhappy when the MSTK_SET macro's u8 __val variable
is updated with &= ~0xff (MSTK_YEAR_MASK). Making the constant
unsigned fixes the problem.

[ I fixed up the sparc32 side as well -DaveM ]

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-27 01:13:55 -07:00
David S. Miller d1acb4210a [SPARC64]: Get DEBUG_PAGEALLOC working again.
We have to make sure to use base-pagesize TLB entries even during the
early transition period where we need TLB miss handling but don't have
the kernel page tables setup yet for the linear region.

Also, it is necessary therefore to not use the 4MB TSB for these
translations, and instead use the normal kernel TSB.  This allows us
to also get rid of the 4MB tsb for debug builds which shrinks the
kernel a little bit.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-16 17:20:28 -07:00
David S. Miller 50d266a3a1 [SPARC]: Hook up missing syscalls.
sys_mbind
sys_get_mempolicy
sys_set_mempolicy
sys_kexec_load
sys_move_pages
sys_getcpu
sys_epoll_pwait

This work is largely a result of David Woodhouse's most
excellent missing syscalls patch.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-12 19:58:18 -07:00
David S. Miller ac33d1febb [SPARC]: We do not need OLD_GETRLIMIT.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-09 23:10:23 -08:00
David S. Miller 2ef550790a [SPARC64]: Fix PARPORT build (again).
Need to provide {claim,release}_dma_lock() for this guy too.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-08 15:00:03 -08:00
David S. Miller 78ad0b8408 [SPARC64]: Fix floppy build failure.
Just define a local {claim,release}_dma_lock() implementation
for the floppy driver to use so we don't need to define and
export to modules the silly dma_spin_lock.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-05 13:22:28 -08:00
David S. Miller c4c31fe0e2 [SPARC]: Provide 'get_property()' alias for of_get_property().
Another powerpc compatibility item, this will allow us to share
more code with them.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-02 15:22:53 -08:00
David S. Miller f6d0f9ea55 [SPARC]: Provide pci_device_to_OF_node() just like powerpc.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-02 15:22:51 -08:00
David S. Miller 74bd7d093b [SPARC64]: Fix parport_pc build.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-28 13:09:34 -08:00
David S. Miller b5ba1b31c7 [SPARC64]: Increase command line size to 2048 like other arches.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-12 15:15:47 -08:00
Linus Torvalds c827ba4cb4 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Update defconfig.
  [SPARC64]: Add PCI MSI support on Niagara.
  [SPARC64] IRQ: Use irq_desc->chip_data instead of irq_desc->handler_data
  [SPARC64]: Add obppath sysfs attribute for SBUS and PCI devices.
  [PARTITION]: Add whole_disk attribute.
2007-02-11 11:37:45 -08:00
Tilman Schmidt 4564f9e5fd [PATCH] consolidate line discipline number definitions
The line discipline numbers N_* are currently defined for each architecture
individually, but (except for a seeming mistake) identically, in
asm/termios.h.  There is no obvious reason why these numbers should be
architecture specific, nor any apparent relationship with the termios
structure.  The total number of these, NR_LDISCS, is defined in linux/tty.h
anyway.  So I propose the following patch which moves the definitions of
the individual line disciplines to linux/tty.h too.

Three of these numbers (N_MASC, N_PROFIBUS_FDL, and N_SMSBLOCK) are unused
in the current kernel, but the patch still keeps the complete set in case
there are plans to use them yet.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:26 -08:00
David S. Miller 35a17eb6a8 [SPARC64]: Add PCI MSI support on Niagara.
This is kind of hokey, we could use the hardware provided facilities
much better.

MSIs are assosciated with MSI Queues.  MSI Queues generate interrupts
when any MSI assosciated with it is signalled.  This suggests a
two-tiered IRQ dispatch scheme:

	MSI Queue interrupt --> queue interrupt handler
		MSI dispatch --> driver interrupt handler

But we just get one-level under Linux currently.  What I'd like to do
is possibly stick the IRQ actions into a per-MSI-Queue data structure,
and dispatch them form there, but the generic IRQ layer doesn't
provide a way to do that right now.

So, the current kludge is to "ACK" the interrupt by processing the
MSI Queue data structures and ACK'ing them, then we run the actual
handler like normal.

We are wasting a lot of useful information, for example the MSI data
and address are provided with ever MSI, as well as a system tick if
available.  If we could pass this into the IRQ handler it could help
with certain things, in particular for PCI-Express error messages.

The MSI entries on sparc64 also tell you exactly which bus/device/fn
sent the MSI, which would be great for error handling when no
registered IRQ handler can service the interrupt.

We override the disable/enable IRQ chip methods in sun4v_msi, so we
have to call {mask,unmask}_msi_irq() directly from there.  This is
another ugly wart.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-10 23:50:37 -08:00
David S. Miller e3a411a3df [SPARC64]: Fix of_iounmap() region release.
We need to pass in the resource otherwise we cannot
release the region properly.  We must know whether it is
an I/O or MEM resource.

Spotted by Eric Brower.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-31 14:06:05 -08:00
David S. Miller 5a089006bf [SPARC64]: Mirror x86_64's PERCPU_ENOUGH_ROOM definition.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-17 14:06:59 -08:00
David S. Miller 729e7d7e4d [SPARC64]: Minor irq handling cleanups.
Use struct irq_chip instead of hw_interrupt_type.

Delete hw_resend_irq(), totally unused.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-17 14:06:56 -08:00
Ralf Baechle ec8c0446b6 [PATCH] Optimize D-cache alias handling on fork
Virtually index, physically tagged cache architectures can get away
without cache flushing when forking.  This patch adds a new cache
flushing function flush_cache_dup_mm(struct mm_struct *) which for the
moment I've implemented to do the same thing on all architectures
except on MIPS where it's a no-op.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:27:08 -08:00
David S. Miller f088258966 [SPARC64]: Fix several kprobes bugs.
- relbranch_fixup(), for non-branches, would end up setting
  regs->tnpc incorrectly, in fact it would set it equal to
  regs->tpc which would cause that instruction to execute twice

  Also, if this is not a PC-relative branch, we should just
  leave regs->tnpc as-is.  This covers cases like 'jmpl' which
  branch to absolute values.

- To be absolutely %100 safe, we need to flush the instruction
  cache for all assignments to kprobe->ainsn.insn[], including
  cases like add_aggr_kprobe()

- prev_kprobe's status field needs to be 'unsigned long' to match
  the type of the value it is saving

- jprobes were totally broken:
  = jprobe_return() can run in the stack frame of the jprobe handler,
    or in an even deeper stack frame, thus we'll be in the wrong
    register window than the one from the original probe state.

    So unwind using 'restore' instructions, if necessary, right
    before we do the jprobe_return() breakpoint trap.

  = There is no reason to save/restore the register window saved
    at %sp at jprobe trigger time.  Those registers cannot be
    modified by the jprobe handler.  Also, this code was saving
    and restoring "sizeof (struct sparc_stackf)" bytes.  Depending
    upon the caller, this could clobber unrelated stack frame
    pieces if there is only a basic 128-byte register window
    stored on the stack, without the argument save area.

    So just saving and restoring struct pt_regs is sufficient.

  = Kill the "jprobe_saved_esp", totally unused.

    Also, delete "jprobe_saved_regs_location", with the stack frame
    unwind now done explicitly by jprobe_return(), this check is
    superfluous.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-10 02:42:03 -08:00
Mariusz Kozlowski 5ff42459af [SPARC64]: dma remove extra brackets
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-10 02:40:36 -08:00
David S. Miller 10e267234c [SPARC64]: Add irqtrace/stacktrace/lockdep support.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-10 02:39:09 -08:00
Alan Cox be90038a24 [PATCH] tty: preparatory structures for termios revamp
In order to sort out our struct termios and add proper speed control we need
to separate the kernel and user termios structures.  Glibc is fine but the
other libraries rely on the kernel exported struct termios and we need to
extend this without breaking the ABI/API

To do so we add a struct ktermios which is the kernel view of a termios
structure and overlaps the struct termios with extra fields on the end for
now.  (That limitation will go away in later patches).  Some platforms (eg
alpha) planned ahead and thus use the same struct for both, others did not.

This just adds the structures but does not use them, it seems a sensible
splitting point for bisect if there are compile failures (not that I expect
them)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:56 -08:00
Ralf Baechle d3fa72e455 [PATCH] Pass struct dev pointer to dma_cache_sync()
Pass struct dev pointer to dma_cache_sync()

dma_cache_sync() is ill-designed in that it does not have a struct device
pointer argument which makes proper support for systems that consist of a
mix of coherent and non-coherent DMA devices hard.  Change dma_cache_sync
to take a struct device pointer as first argument and fix all its callers
to pass it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:41 -08:00
Ralf Baechle f67637ee4b [PATCH] Add struct dev pointer to dma_is_consistent()
dma_is_consistent() is ill-designed in that it does not have a struct
device pointer argument which makes proper support for systems that consist
of a mix of coherent and non-coherent DMA devices hard.  Change
dma_is_consistent to take a struct device pointer as first argument and fix
the sole caller to pass it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:41 -08:00
Arnd Bergmann f5738ceed4 [PATCH] remove kernel syscalls
The last thing we agreed on was to remove the macros entirely for 2.6.19,
on all architectures. Unfortunately, I think nobody actually _did_ that,
so they are still there.

[akpm@osdl.org: x86_64 fix]
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Greg Schafer <gschafer@zip.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:37 -08:00
Christoph Lameter e18b890bb0 [PATCH] slab: remove kmem_cache_t
Replace all uses of kmem_cache_t with struct kmem_cache.

The patch was generated using the following script:

	#!/bin/sh
	#
	# Replace one string by another in all the kernel sources.
	#

	set -e

	for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do
		quilt add $file
		sed -e "1,\$s/$1/$2/g" $file >/tmp/$$
		mv /tmp/$$ $file
		quilt refresh
	done

The script was run like this

	sh replace kmem_cache_t "struct kmem_cache"

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:25 -08:00
Peter Zijlstra a866374aec [PATCH] mm: pagefault_{disable,enable}()
Introduce pagefault_{disable,enable}() and use these where previously we did
manual preempt increments/decrements to make the pagefault handler do the
atomic thing.

Currently they still rely on the increased preempt count, but do not rely on
the disabled preemption, this might go away in the future.

(NOTE: the extra barrier() in pagefault_disable might fix some holes on
       machines which have too many registers for their own good)

[heiko.carstens@de.ibm.com: s390 fix]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Nick Piggin <npiggin@suse.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:21 -08:00
Al Viro d5c6393641 [NET]: SPARC64 checksum annotations and cleanups.
* sanitize prototypes, annotate
* kill useless shift

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:23:23 -08:00
Linus Torvalds 72a73a69f6 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (28 commits)
  PCI: make arch/i386/pci/common.c:pci_bf_sort static
  PCI: ibmphp_pci.c: fix NULL dereference
  pciehp: remove unnecessary pci_disable_msi
  pciehp: remove unnecessary free_irq
  PCI: rpaphp: change device tree examination
  PCI: Change memory allocation for acpiphp slots
  i2c-i801: SMBus patch for Intel ICH9
  PCI: irq: irq and pci_ids patch for Intel ICH9
  PCI: pci_{enable,disable}_device() nestable ports
  PCI: switch pci_{enable,disable}_device() to be nestable
  PCI: arch/i386/kernel/pci-dma.c: ioremap balanced with iounmap
  pci/i386: style cleanups
  PCI: Block on access to temporarily unavailable pci device
  pci: fix __pci_register_driver error handling
  pci: clear osc support flags if no _OSC method
  acpiphp: fix missing acpiphp_glue_exit()
  acpiphp: fix use of list_for_each macro
  Altix: Initial ACPI support - ROM shadowing.
  Altix: SN ACPI hotplug support.
  Altix: Add initial ACPI IO support
  ...
2006-12-01 16:41:27 -08:00
Benjamin Herrenschmidt c6dbaef22a Driver core: add dev_archdata to struct device
Add arch specific dev_archdata to struct device

Adds an arch specific struct dev_arch to struct device. This enables
architecture to add specific fields to every device in the system, like
DMA operation pointers, NUMA node ID, firmware specific data, etc...

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Andi Kleen <ak@suse.de>
Acked-By: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:52:01 -08:00
Matthew Wilcox ebf5a24829 PCI: Use pci_generic_prep_mwi on sparc64
The setting of the CACHE_LINE_SIZE register in sparc64's pci
initialisation code isn't quite adequate as the device may have
incompatible requirements.  The generic code tests for this, so switch
sparc64 over to using it.

Since sparc64 has different L1 cache line size and PCI cache line size,
it would need to override the generic code like i386 and ia64 do.  We
know what the cache line size is at compile time though, so introduce a
new optional constant PCI_CACHE_LINE_BYTES.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: David Miller <davem@davemloft.net>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:36:57 -08:00
David S. Miller 59359ff877 [SPARC]: Fix robust futex syscalls and wire up migrate_pages.
When I added the entries for the robust futex syscall entries, I
forgot to bump NR_SYSCALLS.  The current situation is error-prone
because NR_SYSCALLS lives in entry.S where the system call limit
checks are enforced.  Move the definition to asm/unistd.h in order to
make this mistake much more difficult to make.

And wire up sys_migrate_pages since the powerpc folks implemented the
compat wrapper for us.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-05 16:51:03 -08:00
David S. Miller c7fed9d750 [SPARC64]: Fix futex_atomic_cmpxchg_inatomic implementation.
I copied the logic from ll/sc arch implementations, but that
was wrong and makes no sense at all.  Just do a straight
compare-exchange instruction, just like x86.

Based upon bug reports from Dennis Gilmore and Fabio Massimo.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-01 16:30:39 -08:00
David S. Miller a94b1d1fd7 [SPARC64]: 8-byte align return value from compat_alloc_user_space()
Otherwise we get a ton of unaligned exceptions, for cases such
as compat_sys_msgrcv() which go:

	p = compat_alloc_user_space(second + sizeof(struct msgbuf));

and here 'second' can for example be an arbitrary odd value.

Based upon a bug report from Jurij Smakov.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-22 21:53:30 -07:00
Matthew Wilcox e50190a834 [PATCH] Consolidate check_signature
There's nothing arch-specific about check_signature(), so move it to
<linux/io.h>.  Use a cross between the Alpha and i386 implementations as
the generic one.

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11 11:14:23 -07:00
Al Viro 6d24c8dc2e [PATCH] sparc64 pt_regs fixes
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-08 12:32:35 -07:00
Dave Jones 038b0a6d8d Remove all inclusions of <linux/config.h>
kbuild explicitly includes this at build time.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-04 03:38:54 -04:00
David S. Miller 36d046bbbd [SPARC64]: Do not include compat.h from asm-sparc64/signal.h any more.
It's not needed, now that all of that stuff is now in
asm/compat_signal.h, and it breaks the build too :-)

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-02 14:30:45 -07:00
David S. Miller 14cc6abada [SPARC64]: Move signal compat bits to new header file.
Create asm-sparc64/compat_signal.h and stuff things there.

This avoids the "linux/compat.h includes asm/signal.h but
asm/signal.h needs compat_sigset_t which isn't defined yet"
problems introduced recently.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-02 14:24:18 -07:00
Arnd Bergmann 135ab6ec8f [PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references
The last in-kernel user of errno is gone, so we should remove the definition
and everything referring to it.  This also removes the now-unused lib/execve.c
file that was introduced earlier.

Also remove every trace of __KERNEL_SYSCALLS__ that still remained in the
kernel.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ian Molton <spyro@f2s.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Hirokazu Takata <takata.hirokazu@renesas.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Richard Curnow <rc@rc0.org.uk>
Cc: William Lee Irwin III <wli@holomorphy.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: Chris Zankel <chris@zankel.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02 07:57:23 -07:00
Martin Schwidefsky ef6edc9746 [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks
On systems running with virtual cpus there is optimization potential in
regard to spinlocks and rw-locks.  If the virtual cpu that has taken a lock
is known to a cpu that wants to acquire the same lock it is beneficial to
yield the timeslice of the virtual cpu in favour of the cpu that has the
lock (directed yield).

With CONFIG_PREEMPT="n" this can be implemented by the architecture without
common code changes.  Powerpc already does this.

With CONFIG_PREEMPT="y" the lock loops are coded with _raw_spin_trylock,
_raw_read_trylock and _raw_write_trylock in kernel/spinlock.c.  If the lock
could not be taken cpu_relax is called.  A directed yield is not possible
because cpu_relax doesn't know anything about the lock.  To be able to
yield the lock in favour of the current lock holder variants of cpu_relax
for spinlocks and rw-locks are needed.  The new _raw_spin_relax,
_raw_read_relax and _raw_write_relax primitives differ from cpu_relax
insofar that they have an argument: a pointer to the lock structure.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:21 -07:00
Dave McCracken 46a82b2d55 [PATCH] Standardize pxx_page macros
One of the changes necessary for shared page tables is to standardize the
pxx_page macros.  pte_page and pmd_page have always returned the struct
page associated with their entry, while pte_page_kernel and pmd_page_kernel
have returned the kernel virtual address.  pud_page and pgd_page, on the
other hand, return the kernel virtual address.

Shared page tables needs pud_page and pgd_page to return the actual page
structures.  There are very few actual users of these functions, so it is
simple to standardize their usage.

Since this is basic cleanup, I am submitting these changes as a standalone
patch.  Per Hugh Dickins' comments about it, I am also changing the
pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning.

Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:51 -07:00
Jeff Garzik a6d967a485 [libata] No need for all those arch libata-portmap.h headers
They all contain the same thing.  Instead, have a single generic one in
include/asm-generic, and permit an arch to override as needed.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-25 15:33:09 -04:00
David Woodhouse 02b25fcff6 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-09-24 22:05:59 +01:00
Jeff Garzik 23930fa1ce Merge branch 'master' into upstream 2006-09-24 01:52:47 -04:00
David Woodhouse 09087a1a87 Fix exported headers for SPARC, SPARC64
Mostly removing files which have no business being used in userspace.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-21 08:48:27 +01:00
David Woodhouse fadcfa33b6 [HEADERS] One line per header in Kbuild files to reduce conflicts
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-09-19 12:43:58 +01:00
Jeff Garzik 97148ba223 Merge branch 'master' into upstream 2006-09-12 12:03:21 -04:00
Kirill Korotaev 3a45975681 [PATCH] IA64,sparc: local DoS with corrupted ELFs
This prevents cross-region mappings on IA64 and SPARC which could lead
to system crash.  They were correctly trapped for normal mmap() calls,
but not for the kernel internal calls generated by executable loading.

This code just moves the architecture-specific cross-region checks into
an arch-specific "arch_mmap_check()" macro, and defines that for the
architectures that needed it (ia64, sparc and sparc64).

Architectures that don't have any special requirements can just ignore
the new cross-region check, since the mmap() code will just notice on
its own when the macro isn't defined.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[ Cleaned up to not affect architectures that don't need it ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-08 08:40:46 -07:00
Jeff Garzik b01e86fee6 Merge /spare/repo/linux-2.6 into upstream 2006-08-29 17:55:59 -04:00
David S. Miller c46f477422 [SPARC64]: Fix pfn_pte() build failure.
The "%uhi" needs to be "%%uhi" because we want a real
"%" character in the assembler here, instead of an
assembler variable expansion.

Aparently older GCCs were more liberal and interpreted
this %-letter as a literal "%" for whatever reason.

Based upon a build failure report from Meelis Roos.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-22 14:35:40 -07:00
Alan Cox 2ec7df0457 [PATCH] libata: rework legacy handling to remove much of the cruft
Kill host_set->next
Fix simplex support
Allow per platform setting of IDE legacy bases

Some of this can be tidied further later on, in particular all the
legacy port gunge belongs as a PCI quirk/PCI header decode to understand
the special legacy IDE rules in the PCI spec.

Longer term Jeff also wants to move the request_irq/free_irq out of core
which will make this even cleaner.

tj: folded in three followup patches - ata_piix-fix, broken-arch-fix
and fix-new-legacy-handling, and separated per-dev xfermask into
separate patch preceding this one.  Folded in fixes are...

* ata_piix-fix: fix build failure due to host_set->next removal
* broken-arch-fix: add missing include/asm-*/libata-portmap.h
* fix-new-legacy-handling:
	* In ata_pci_init_legacy_port(), probe_num was incorrectly
          incremented during initialization of the secondary port and
          probe_ent->n_ports was incorrectly fixed to 1.

	* Both legacy ports ended up having the same hard_port_no.

	* When printing port information, both legacy ports printed
	  the first irq.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-08-10 16:59:10 +09:00
bibo, mao a9ad965ea9 [PATCH] IA64: kprobe invalidate icache of jump buffer
Kprobe inserts breakpoint instruction in probepoint and then jumps to
instruction slot when breakpoint is hit, the instruction slot icache must
be consistent with dcache.  Here is the patch which invalidates instruction
slot icache area.

Without this patch, in some machines there will be fault when executing
instruction slot where icache content is inconsistent with dcache.

Signed-off-by: bibo,mao <bibo.mao@intel.com>
Acked-by: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Keshavamurthy Anil S <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-31 13:28:38 -07:00
David S. Miller b8cfac4c2f [SPARC64]: Fix typo in pgprot_noncached().
The sun4v code sequence was or'ing in the sun4u pte bits by mistake.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-27 17:57:32 -07:00
David S. Miller 92f282988b [SPARC64]: Fix quad-float multiply emulation.
Something is wrong with the 3-multiply (vs. 4-multiply) optimized
version of _FP_MUL_MEAT_2_*(), so just use the slower version
which actually computes correct values.

Noticed by Rene Rebe

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-27 16:49:21 -07:00
David S. Miller 06ffd7956e [SPARC]: Kill prom_getname, unused and not implemented properly.
The m68k port's sun3 asm/oplib.h had a stray reference too, so I
killed that off as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-21 14:17:55 -07:00
David S. Miller 46ba6d7d8b [SPARC64]: Fix more of_device layer IRQ bugs, and correct PROMREG_MAX.
Sabre and Psycho PCI controllers can have partial interrupt-map
properties, meaning that on-board devices don't match up to any
entries.  Instead, they are fully specified from the beginning and
we should pass them directly to the IRQ translator as-is.

Also, fill in the necessary translator slots for the "graphics"
and "expansion UPA" interrupts on Sabre, Psycho, and SYSIO SBUS.

Increase PROMREG_MAX to 24, as seen on SUNW,ffb devices.

Finally, prevent accidentally writing past the end of the of_device
struct resource[] and irqs[] arrays.  Spit out a log message when
we ignore some entries because there are too many of them.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-21 14:17:52 -07:00
Steven Rostedt 52393ccc0a [PATCH] remove set_wmb - arch removal
set_wmb should not be used in the kernel because it just confuses the
code more and has no benefit.  Since it is not currently used in the
kernel this patch removes it so that new code does not include it.

All archs define set_wmb(var, value) to do { var = value; wmb(); }
while(0) except ia64 and sparc which use a mb() instead.  But this is
still moot since it is not used anyway.

Hasn't been tested on any archs but x86 and x86_64 (and only compiled
tested)

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-14 21:56:14 -07:00
David Woodhouse 50f73fe026 [SPARC64]: Fix make headers_install
A minor typo in the include/asm-sparc64/Kbuild file prevents the make
headers_install from building a useful tree of kernel headers for
sparc64.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Tom "spot" Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-13 01:50:04 -07:00
Randy Dunlap 7233589d77 [SPARC64]: Fix sparc64 build errors when CONFIG_PCI=n.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-05 20:18:39 -07:00
Linus Torvalds 6fa0cb1141 Merge git://git.infradead.org/hdrinstall-2.6
* git://git.infradead.org/hdrinstall-2.6:
  Remove export of include/linux/isdn/tpam.h
  Remove <linux/i2c-id.h> and <linux/i2c-algo-ite.h> from userspace export
  Restrict headers exported to userspace for SPARC and SPARC64
  Add empty Kbuild files for 'make headers_install' in remaining arches.
  Add Kbuild file for Alpha 'make headers_install'
  Add Kbuild file for SPARC 'make headers_install'
  Add Kbuild file for IA64 'make headers_install'
  Add Kbuild file for S390 'make headers_install'
  Add Kbuild file for i386 'make headers_install'
  Add Kbuild file for x86_64 'make headers_install'
  Add Kbuild file for PowerPC 'make headers_install'
  Add generic Kbuild files for 'make headers_install'
  Basic implementation of 'make headers_check'
  Basic implementation of 'make headers_install'
2006-07-04 12:55:45 -07:00
Ingo Molnar a875a69f8b [PATCH] lockdep: add per_cpu_offset()
Add the per_cpu_offset() generic method. (used by the lock validator)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:27:00 -07:00
Thomas Gleixner d356d7f4f2 [PATCH] irq-flags: SPARC64: Use the new IRQF_ constants
Use the new IRQF_ constants and remove the SA_INTERRUPT define

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:48 -07:00
David S. Miller 6e990b50ed [SPARC64]: Kill sun4v virtual device layer.
Replace with a simple IRQ translater in the PROM
device tree builder.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-30 14:13:41 -07:00
Linus Torvalds 74e651f0aa Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (30 commits)
  [TIPC]: Initial activation message now includes TIPC version number
  [TIPC]: Improve response to requests for node/link information
  [TIPC]: Fixed skb_under_panic caused by tipc_link_bundle_buf
  [IrDA]: Fix the AU1000 FIR dependencies
  [IrDA]: Fix RCU lock pairing on error path
  [XFRM]: unexport xfrm_state_mtu
  [NET]: make skb_release_data() static
  [NETFILTE] ipv4: Fix typo (Bugzilla #6753)
  [IrDA]: MCS7780 usb_driver struct should be static
  [BNX2]: Turn off link during shutdown
  [BNX2]: Use dev_kfree_skb() instead of the _irq version
  [ATM]: basic sysfs support for ATM devices
  [ATM]: [suni] change suni_init to __devinit
  [ATM]: [iphase] should be __devinit not __init
  [ATM]: [idt77105] should be __devinit not __init
  [BNX2]: Add NETIF_F_TSO_ECN
  [NET]: Add ECN support for TSO
  [AF_UNIX]: Datagram getpeersec
  [NET]: Fix logical error in skb_gso_ok
  [PKT_SCHED]: PSCHED_TADD() and PSCHED_TADD2() can result,tv_usec >= 1000000
  ...
2006-06-29 17:43:43 -07:00
Catherine Zhang 877ce7c1b3 [AF_UNIX]: Datagram getpeersec
This patch implements an API whereby an application can determine the
label of its peer's Unix datagram sockets via the auxiliary data mechanism of
recvmsg.

Patch purpose:

This patch enables a security-aware application to retrieve the
security context of the peer of a Unix datagram socket.  The application
can then use this security context to determine the security context for
processing on behalf of the peer who sent the packet.

Patch design and implementation:

The design and implementation is very similar to the UDP case for INET
sockets.  Basically we build upon the existing Unix domain socket API for
retrieving user credentials.  Linux offers the API for obtaining user
credentials via ancillary messages (i.e., out of band/control messages
that are bundled together with a normal message).  To retrieve the security
context, the application first indicates to the kernel such desire by
setting the SO_PASSSEC option via getsockopt.  Then the application
retrieves the security context using the auxiliary data mechanism.

An example server application for Unix datagram socket should look like this:

toggle = 1;
toggle_len = sizeof(toggle);

setsockopt(sockfd, SOL_SOCKET, SO_PASSSEC, &toggle, &toggle_len);
recvmsg(sockfd, &msg_hdr, 0);
if (msg_hdr.msg_controllen > sizeof(struct cmsghdr)) {
    cmsg_hdr = CMSG_FIRSTHDR(&msg_hdr);
    if (cmsg_hdr->cmsg_len <= CMSG_LEN(sizeof(scontext)) &&
        cmsg_hdr->cmsg_level == SOL_SOCKET &&
        cmsg_hdr->cmsg_type == SCM_SECURITY) {
        memcpy(&scontext, CMSG_DATA(cmsg_hdr), sizeof(scontext));
    }
}

sock_setsockopt is enhanced with a new socket option SOCK_PASSSEC to allow
a server socket to receive security context of the peer.

Testing:

We have tested the patch by setting up Unix datagram client and server
applications.  We verified that the server can retrieve the security context
using the auxiliary data mechanism of recvmsg.

Signed-off-by: Catherine Zhang <cxzhang@watson.ibm.com>
Acked-by: Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:58:06 -07:00
David S. Miller 2b1e597871 [SPARC64]: of_device layer IRQ resolution
Do IRQ determination generically by parsing the PROM properties,
and using IRQ controller drivers for final resolution.

One immediate positive effect is that all of the IRQ frobbing
in the EBUS, ISA, and PCI controller layers has been eliminated.
We just look up the of_device and use the properly computed
value.

The PCI controller irq_build() routines are gone and no longer
used.  Unfortunately sbus_build_irq() has to remain as there is
a direct reference to this in the sunzilog driver.  That can be
killed off once the sparc32 side of this is written and the
sunzilog driver is transformed into an "of" bus driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:37:38 -07:00
David S. Miller 946ea09962 [SPARC]: Kill interrupt stuff and linux_phandle from device_node.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:37:25 -07:00
David S. Miller 3ca9fab410 [SPARC]: Add of_io{remap,unmap}().
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:37:16 -07:00
David S. Miller cf44bbc26c [SPARC]: Beginnings of generic of_device framework.
The idea is to fully construct the device register and
interrupt values into these of_device objects, and convert
all of SBUS, EBUS, ISA drivers to use this new stuff.

Much ideas and code taken from Ben H.'s powerpc work.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:37:12 -07:00
David S. Miller 3ae9a3489a [SPARC]: Add of_n_{addr,size}_cells().
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:37:10 -07:00
David S. Miller 286bbe87c1 [SPARC64]: Kill starfire_cookie from SBUS/PCI.
Totally unused.

We need to traverse the list of global IRQ translaters,
so storing it in the per-bus structures was useless.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:37:08 -07:00
Siddha, Suresh B 5c45bf279d [PATCH] sched: mc/smt power savings sched policy
sysfs entries 'sched_mc_power_savings' and 'sched_smt_power_savings' in
/sys/devices/system/cpu/ control the MC/SMT power savings policy for the
scheduler.

Based on the values (1-enable, 0-disable) for these controls, sched groups
cpu power will be determined for different domains.  When power savings
policy is enabled and under light load conditions, scheduler will minimize
the physical packages/cpu cores carrying the load and thus conserving
power(with a perf impact based on the workload characteristics...  see OLS
2005 CMP kernel scheduler paper for more details..)

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Con Kolivas <kernel@kolivas.org>
Cc: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:45 -07:00
Linus Torvalds 8871e73fdb Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC]: Add iomap interfaces.
  [OPENPROM]: Rewrite driver to use in-kernel device tree.
  [OPENPROMFS]: Rewrite using in-kernel device tree and seq_file.
  [SPARC]: Add unique device_node IDs and a ".node" property.
  [SPARC]: Add of_set_property() interface.
  [SPARC64]: Export auxio_register to modules.
  [SPARC64]: Add missing interfaces to dma-mapping.h
  [SPARC64]: Export _PAGE_IE to modules.
  [SPARC64]: Allow floppy driver to build modular.
  [SPARC]: Export x_bus_type to modules.
  [RIOWATCHDOG]: Fix the build.
  [CPWATCHDOG]: Fix the build.
  [PARPORT] sunbpp: Fix typo.
  [MTD] sun_uflash: Port to new EBUS device layer.
2006-06-26 10:08:32 -07:00
Anil S Keshavamurthy e6f47f978b [PATCH] Notify page fault call chain
With this patch Kprobes now registers for page fault notifications only when
their is an active probe registered.  Once all the active probes are
unregistered their is no need to be notified of page faults and kprobes
unregisters itself from the page fault notifications.  Hence we will have ZERO
side effects when no probes are active.

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:22 -07:00
Anil S Keshavamurthy d98f8f0518 [PATCH] Notify page fault call chain for sparc64
Overloading of page fault notification with the notify_die() has performance
issues(since the only interested components for page fault is kprobes and/or
kdb) and hence this patch introduces the new notifier call chain exclusively
for page fault notifications their by avoiding notifying unnecessary
components in the do_page_fault() code path.

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 09:58:22 -07:00
David S. Miller 87b385da1f [SPARC]: Add unique device_node IDs and a ".node" property.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:18:57 -07:00
David S. Miller fb7cd9d9ac [SPARC]: Add of_set_property() interface.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:18:36 -07:00
David S. Miller 36321426e3 [SPARC64]: Add missing interfaces to dma-mapping.h
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:15:05 -07:00
David S. Miller 3505599615 [SPARC64]: Allow floppy driver to build modular.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:15:01 -07:00
Paul Mackerras bfe5d83419 [PATCH] Define __raw_get_cpu_var and use it
There are several instances of per_cpu(foo, raw_smp_processor_id()), which
is semantically equivalent to __get_cpu_var(foo) but without the warning
that smp_processor_id() can give if CONFIG_DEBUG_PREEMPT is enabled.  For
those architectures with optimized per-cpu implementations, namely ia64,
powerpc, s390, sparc64 and x86_64, per_cpu() turns into more and slower
code than __get_cpu_var(), so it would be preferable to use __get_cpu_var
on those platforms.

This defines a __raw_get_cpu_var(x) macro which turns into per_cpu(x,
raw_smp_processor_id()) on architectures that use the generic per-cpu
implementation, and turns into __get_cpu_var(x) on the architectures that
have an optimized per-cpu implementation.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 10:01:01 -07:00
David S. Miller 576c352e89 [SBUS]: Rewrite and plug into of_device framework.
I severely apologize, I was still learning how to program
in C when I wrote this stuff 10 years ago...

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:50 -07:00
David S. Miller fd53143116 [SPARC]: Port of_device layer and make ebus use it.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:47 -07:00
David S. Miller a2bd4fd179 [SPARC64]: Add of_device layer and make ebus/isa use it.
Sparcspkr and power drivers are converted, to make sure it works.
Eventually the SBUS device layer will use this as a sub-class.

I really cannot cut loose on that bit until sparc32 is given the
same infrastructure.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:43 -07:00
David S. Miller 8cd24ed4f8 [SPARC64]: Expand of_*() interfaces some more.
Import some more stuff from powerpc.

Add of_device_is_compatible(), and of_find_compatible_node().
Export some more of the other routines to modules.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:41 -07:00
David S. Miller cecc4e9222 [SPARC64]: Convert central bus layer to in-kernel PROM device tree.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:32 -07:00
David S. Miller 9c10a58ed6 [SPARC64]: Kill ebus/isa range and interrupt mapping struct members.
Unused outside of initial bus probe scan.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:30 -07:00
David S. Miller 690c8fd31f [SPARC64]: Use in-kernel PROM tree for EBUS and ISA.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:28 -07:00
David S. Miller de8d28b16f [SPARC64]: Convert sparc64 PCI layer to in-kernel device tree.
One thing this change pointed out was that we really should
pull the "get 'local-mac-address' property" logic into a helper
function all the network drivers can call.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:26 -07:00
David S. Miller c2a5a46be4 [SPARC64]: Fix for Niagara memory corruption.
On some sun4v systems, after netboot the ethernet controller and it's
DMA mappings can be left active.  The net result is that the kernel
can end up using memory the ethernet controller will continue to DMA
into, resulting in corruption.

To deal with this, we are more careful about importing IOMMU
translations which OBP has left in the IO-TLB.  If the mapping maps
into an area the firmware claimed was free and available memory for
the kernel to use, we demap instead of import that IOMMU entry.

This is going to cause the network chip to take a PCI master abort on
the next DMA it attempts, if it has been left going like this.  All
tests show that this is handled properly by the PCI layer and the e1000
drivers.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:21 -07:00
David S. Miller 07f8e5f358 [SPARC64]: Convert cpu_find_by_*() interface to in-kernel PROM device tree.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:17 -07:00
David S. Miller 6d307724cb [SPARC64]: Add of_getintprop_default().
This encodes a common idiomatic coding pattern used when
dealing with integer properties.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:15 -07:00
David S. Miller 6760d28bc6 [SPARC64]: Convert sun4v virtual-device layer to in-kernel PROM device tree.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:13 -07:00
David S. Miller e87dc35020 [SPARC64]: Use in-kernel OBP device tree for PCI controller probing.
It can be pushed even further down, but this is a first step.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:07 -07:00
David S. Miller aaf7cec276 [SPARC64]: Add of_find_node_by_{name,type}().
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:04 -07:00
David S. Miller 372b07bb5a [SPARC64]: Import OBP device tree into kernel data structures.
The basic framework is based on the PowerPC OF code.

This code even tries to get the device addressing components
correct in the full path names.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:02 -07:00
David S. Miller 8fae097deb [SBUS]: Start cleaning up generic sbus support layer.
In particular, move the IRQ probing out to sparc32/sparc64
arch specific code where it belongs.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 23:15:00 -07:00
Bjorn Helgaas 4f1bcaf094 [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use
VGA_MAP_MEM translates to ioremap() on some architectures.  It makes sense
to do this to vga_vram_base, because we're going to access memory between
vga_vram_base and vga_vram_end.

But it doesn't really make sense to map starting at vga_vram_end, because
we aren't going to access memory starting there.  On ia64, which always has
to be different, ioremapping vga_vram_end gives you something completely
incompatible with ioremapped vga_vram_start, so vga_vram_size ends up being
nonsense.

As a bonus, we often know the size up front, so we can use ioremap()
correctly, rather than giving it a zero size.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-22 15:05:58 -07:00