Commit Graph

737 Commits

Author SHA1 Message Date
Ulrich Drepper
1c710c896e utimensat implementation
Implement utimensat(2) which is an extension to futimesat(2) in that it

a) supports nano-second resolution for the timestamps
b) allows to selectively ignore the atime/mtime value
c) allows to selectively use the current time for either atime or mtime
d) supports changing the atime/mtime of a symlink itself along the lines
   of the BSD lutimes(3) functions

For this change the internally used do_utimes() functions was changed to
accept a timespec time value and an additional flags parameter.

Additionally the sys_utime function was changed to match compat_sys_utime
which already use do_utimes instead of duplicating the work.

Also, the completely missing futimensat() functionality is added.  We have
such a function in glibc but we have to resort to using /proc/self/fd/* which
not everybody likes (chroot etc).

Test application (the syscall number will need per-arch editing):

#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <sys/time.h>
#include <stddef.h>
#include <syscall.h>

#define __NR_utimensat 280

#define UTIME_NOW       ((1l << 30) - 1l)
#define UTIME_OMIT      ((1l << 30) - 2l)

int
main(void)
{
  int status = 0;

  int fd = open("ttt", O_RDWR|O_CREAT|O_EXCL, 0666);
  if (fd == -1)
    error (1, errno, "failed to create test file \"ttt\"");

  struct stat64 st1;
  if (fstat64 (fd, &st1) != 0)
    error (1, errno, "fstat failed");

  struct timespec t[2];
  t[0].tv_sec = 0;
  t[0].tv_nsec = 0;
  t[1].tv_sec = 0;
  t[1].tv_nsec = 0;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  struct stat64 st2;
  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
    {
      puts ("atim not reset to zero");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("mtim not reset to zero");
      status = 1;
    }
  if (status != 0)
    goto out;

  t[0] = st1.st_atim;
  t[1].tv_sec = 0;
  t[1].tv_nsec = UTIME_OMIT;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
      || st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
    {
      puts ("atim not set");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("mtim changed from zero");
      status = 1;
    }
  if (status != 0)
    goto out;

  t[0].tv_sec = 0;
  t[0].tv_nsec = UTIME_OMIT;
  t[1] = st1.st_mtim;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != st1.st_atim.tv_sec
      || st2.st_atim.tv_nsec != st1.st_atim.tv_nsec)
    {
      puts ("mtim changed from original time");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != st1.st_mtim.tv_sec
      || st2.st_mtim.tv_nsec != st1.st_mtim.tv_nsec)
    {
      puts ("mtim not set");
      status = 1;
    }
  if (status != 0)
    goto out;

  sleep (2);

  t[0].tv_sec = 0;
  t[0].tv_nsec = UTIME_NOW;
  t[1].tv_sec = 0;
  t[1].tv_nsec = UTIME_NOW;
  if (syscall(__NR_utimensat, AT_FDCWD, "ttt", t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  struct timeval tv;
  gettimeofday(&tv,NULL);

  if (st2.st_atim.tv_sec <= st1.st_atim.tv_sec
      || st2.st_atim.tv_sec > tv.tv_sec)
    {
      puts ("atim not set to NOW");
      status = 1;
    }
  if (st2.st_mtim.tv_sec <= st1.st_mtim.tv_sec
      || st2.st_mtim.tv_sec > tv.tv_sec)
    {
      puts ("mtim not set to NOW");
      status = 1;
    }

  if (symlink ("ttt", "tttsym") != 0)
    error (1, errno, "cannot create symlink");

  t[0].tv_sec = 0;
  t[0].tv_nsec = 0;
  t[1].tv_sec = 0;
  t[1].tv_nsec = 0;
  if (syscall(__NR_utimensat, AT_FDCWD, "tttsym", t, AT_SYMLINK_NOFOLLOW) != 0)
    error (1, errno, "utimensat failed");

  if (lstat64 ("tttsym", &st2) != 0)
    error (1, errno, "lstat failed");

  if (st2.st_atim.tv_sec != 0 || st2.st_atim.tv_nsec != 0)
    {
      puts ("symlink atim not reset to zero");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 0 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("symlink mtim not reset to zero");
      status = 1;
    }
  if (status != 0)
    goto out;

  t[0].tv_sec = 1;
  t[0].tv_nsec = 0;
  t[1].tv_sec = 1;
  t[1].tv_nsec = 0;
  if (syscall(__NR_utimensat, fd, NULL, t, 0) != 0)
    error (1, errno, "utimensat failed");

  if (fstat64 (fd, &st2) != 0)
    error (1, errno, "fstat failed");

  if (st2.st_atim.tv_sec != 1 || st2.st_atim.tv_nsec != 0)
    {
      puts ("atim not reset to one");
      status = 1;
    }
  if (st2.st_mtim.tv_sec != 1 || st2.st_mtim.tv_nsec != 0)
    {
      puts ("mtim not reset to one");
      status = 1;
    }

  if (status == 0)
     puts ("all OK");

 out:
  close (fd);
  unlink ("ttt");
  unlink ("tttsym");

  return status;
}

[akpm@linux-foundation.org: add missing i386 syscall table entry]
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Cc: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:18 -07:00
Randy Dunlap
e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -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
Christoph Hellwig
ab1b6f03a1 simplify the stacktrace code
Simplify the stacktrace code:

 - remove the unused task argument to save_stack_trace, it's always
   current
 - remove the all_contexts flag, it's alwasy 0

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andi Kleen <ak@suse.de>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:14:58 -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
Benjamin Herrenschmidt
ac35ee484d get_unmapped_area handles MAP_FIXED on sparc64
Handle MAP_FIXED in hugetlb_get_unmapped_area on sparc64 by just using
prepare_hugepage_range()

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: William Irwin <bill.irwin@oracle.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>
2007-05-07 12:12:56 -07:00
Christoph Lameter
f0f3980b21 slab allocators: remove multiple alignment specifications
It is not necessary to tell the slab allocators to align to a cacheline
if an explicit alignment was already specified. It is rather confusing
to specify multiple alignments.

Make sure that the call sites only use one form of alignment.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:55 -07:00
Christoph Lameter
5af6083990 slab allocators: Remove obsolete SLAB_MUST_HWCACHE_ALIGN
This patch was recently posted to lkml and acked by Pekka.

The flag SLAB_MUST_HWCACHE_ALIGN is

1. Never checked by SLAB at all.

2. A duplicate of SLAB_HWCACHE_ALIGN for SLUB

3. Fulfills the role of SLAB_HWCACHE_ALIGN for SLOB.

The only remaining use is in sparc64 and ppc64 and their use there
reflects some earlier role that the slab flag once may have had. If
its specified then SLAB_HWCACHE_ALIGN is also specified.

The flag is confusing, inconsistent and has no purpose.

Remove it.

Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:55 -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
e7f11aeed0 [SPARC64]: pgtable_cache_init() should be __init.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-07 00:02:46 -07:00
David S. Miller
c35a376d60 [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/prom.c
The IRQ translation init routines should all be __init.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-07 00:02:24 -07:00
David S. Miller
a6009dda97 [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/pci.c
apb_calc_first_last(), apb_fake_ranges(), pci_of_scan_bus(),
of_scan_pci_bridge(), pci_of_scan_bus(), and pci_scan_one_pbm()
should all be __devinit.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-07 00:01:38 -07:00
David S. Miller
23abc9ec6a [SPARC64]: Fix section mismatch warnings in arch/sparc64/kernel/console.c
probe_other_fhcs() and central_probe() should be __init

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-07 00:00:37 -07:00
David S. Miller
7db00552d9 [SPARC64]: Update defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-06 22:47:14 -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
Linus Torvalds
7e20ef030d 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: (49 commits)
  [SCTP]: Set assoc_id correctly during INIT collision.
  [SCTP]: Re-order SCTP initializations to avoid race with sctp_rcv()
  [SCTP]: Fix the SO_REUSEADDR handling to be similar to TCP.
  [SCTP]: Verify all destination ports in sctp_connectx.
  [XFRM] SPD info TLV aggregation
  [XFRM] SAD info TLV aggregationx
  [AF_RXRPC]: Sort out MTU handling.
  [AF_IUCV/IUCV] : Add missing section annotations
  [AF_IUCV]: Implementation of a skb backlog queue
  [NETLINK]: Remove bogus BUG_ON
  [IPV6]: Some cleanups in include/net/ipv6.h
  [TCP]: zero out rx_opt in tcp_disconnect()
  [BNX2]: Fix TSO problem with small MSS.
  [NET]: Rework dev_base via list_head (v3)
  [TCP] Highspeed: Limited slow-start is nowadays in tcp_slow_start
  [BNX2]: Update version and reldate.
  [BNX2]: Print bus information for PCIE devices.
  [BNX2]: Add 1-shot MSI handler for 5709.
  [BNX2]: Restructure PHY event handling.
  [BNX2]: Add indirect spinlock.
  ...
2007-05-04 19:36:58 -07:00
Pavel Emelianov
7562f876cd [NET]: Rework dev_base via list_head (v3)
Cleanup of dev_base list use, with the aim to simplify making device
list per-namespace. In almost every occasion, use of dev_base variable
and dev->next pointer could be easily replaced by for_each_netdev
loop. A few most complicated places were converted to using
first_netdev()/next_netdev().

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 15:13:45 -07:00
Michael Ellerman
7fe3730de7 MSI: arch must connect the irq and the msi_desc
set_irq_msi() currently connects an irq_desc to an msi_desc. The archs call
it at some point in their setup routine, and then the generic code sets up the
reverse mapping from the msi_desc back to the irq.

set_irq_msi() should do both connections, making it the one and only call
required to connect an irq with it's MSI desc and vice versa.

The arch code MUST call set_irq_msi(), and it must do so only once it's sure
it's not going to fail the irq allocation.

Given that there's no need for the arch to return the irq anymore, the return
value from the arch setup routine just becomes 0 for success and anything else
for failure.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:38 -07:00
Dan Williams
f282b97021 msi: introduce ARCH_SUPPORTS_MSI Kconfig option (rev2)
Allows architectures to advertise that they support MSI rather than listing
each architecture as a PCI_MSI dependency.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:37 -07:00
Jeremy Fitzhardinge
b6e3590f81 [PATCH] x86: Allow percpu variables to be page-aligned
Let's allow page-alignment in general for per-cpu data (wanted by Xen, and
Ingo suggested KVM as well).

Because larger alignments can use more room, we increase the max per-cpu
memory to 64k rather than 32k: it's getting a little tight.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-05-02 19:27:12 +02:00
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
3e4d26508a [SPARC64]: Convert SBUS over to generic iommu/strbuf structs.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:44 -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
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
a165b4205e [SPARC64]: Fix PCI rework to adhere to of_get_property() const return.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:37 -07:00
David S. Miller
f1cfdb55f1 [SPARC64]: Document and fix calculation of pages_avail.
It should be set to the total number of pages that the
system will really have available after things like
initmem, the bootmem map, and initrd are freed up.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:36 -07:00
David S. Miller
0f3e25049e [SPARC64]: Make sure pbm->prom_node is setup easly enough in psycho.c
It needs to be ready before we invoke pci_determine_mem_io_space().

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:35 -07:00
David S. Miller
3996465392 [SPARC64]: Use bootmem_bootmap_pages() in choose_bootmap_pfn().
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:34 -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
9753f0d650 [SPARC64]: Kill sparc_ultra_dump_{i,d}tlb()
While useful in odd circumstances to debug something, they are
normally totally unused and anyone can fetch this code out of the
history if they really need it.

And in any event, the person who needs this kind of code is usually me
:-)

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:32 -07:00
David S. Miller
85f1e1f660 [SPARC64]: Use DECLARE_BITMAP and BITS_TO_LONGS in mm/init.c
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:31 -07:00
David S. Miller
5be4a96367 [SPARC64]: Give move verbose show_mem() output just like i386.
We now report everything i386 does except for highmem which
doesn't apply.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:30 -07:00
David S. Miller
28256ca2e0 [SPARC64]: Mark show_mem() printk's with KERN_INFO.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:28 -07:00
David S. Miller
a94aa25306 [SPARC64]: Kill kvaddr_to_phys() and friends.
Just inline it into flush_icache_range() which is the only
user.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:27 -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
a0963bdfb9 [SPARC64]: Kill _start[]/_end[] declarations in mm/init.c
We already get those from asm/sections.h

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:25 -07:00
David S. Miller
0015d3d68c [SPARC64]: Simplify read_obp_memory().
Kick out empty entries as soon as we spot them, and use memmove()
instead of a silly loop to make the operation more clear.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:23 -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
28f57e774d [SPARC64]: Force dummy host controller onto bus zero.
This helps deal with the invisible bridge that sits between
the host controller and the top-most visisble PCI devices
on hypervisor systems.

For example, on T1000 the bus-range property says 2 --> 4
and so there is a PCI express bridge at bus 2, devfn 0, etc.

So if we don't force the dummy host controller to bus zero,
we'll try to create two devices with the same domain/bus/devfn
triplet.

Also, add some more log diagnostics to make debugging stuff like this
easyer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:20 -07:00
David S. Miller
97b3cf050b [SPARC64]: Add dummy host controller to root of all PCI domains.
We fake up a dummy one in all cases because that is the simplest
thing to do and it happens to be necessary for hypervisor systems.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:19 -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
9fd8b64761 [SPARC64]: Consolidate PCI mem/io resource determination.
It can be done for every PCI configuration using OF properties.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:11 -07:00
David S. Miller
01f94c4a6c [SPARC64]: Fix sabre pci controllers with new probing scheme.
The SIMBA APB bridge is strange, it is a PCI bridge but it lacks
some standard OF properties, in particular it lacks a 'ranges'
property.

What you have to do is read the IO and MEM range registers in
the APB bridge to determine the ranges handled by each bridge.
So fill in the bus resources by doing that.

Since we now handle this quirk in the generic PCI and OF device
probing layers, we can flat out eliminate all of that code from
the sabre pci controller driver.

In fact we can thus eliminate completely another quirk of the sabre
driver.  It tried to make the two APB bridges look like PBMs but that
makes zero sense now (and it's questionable whether it ever made sense).
So now just use pbm_A and probe the whole PCI hierarchy using that as
the root.

This simplification allows many future cleanups to occur.

Also, I've found yet another quirk that needs to be worked around
while testing this.  You can't use the 'class-code' OF firmware
property, especially for IDE controllers.  We have to read the value
out of PCI config space or else we'll see the value the device was
showing before it was programmed into native mode.

I'm starting to think it might be wise to just read all of the values
out of PCI config space instead of using the OF properties. :-/

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:55:10 -07:00