]> err.no Git - linux-2.6/log
linux-2.6
17 years ago[PATCH] optional ZONE_DMA: remove ZONE_DMA remains from parisc
Christoph Lameter [Sat, 10 Feb 2007 09:43:12 +0000 (01:43 -0800)]
[PATCH] optional ZONE_DMA: remove ZONE_DMA remains from parisc

Remove ZONE_DMA remains from parisc so that kernels are build without
ZONE_DMA.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] optional ZONE_DMA: optional ZONE_DMA for ia64
Christoph Lameter [Sat, 10 Feb 2007 09:43:11 +0000 (01:43 -0800)]
[PATCH] optional ZONE_DMA: optional ZONE_DMA for ia64

ZONE_DMA less operation for IA64 SGI platform

Disable ZONE_DMA for SGI SN2.  All memory is addressable by all devices and we
do not need any special memory pool.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] optional ZONE_DMA: optional ZONE_DMA in the VM
Christoph Lameter [Sat, 10 Feb 2007 09:43:10 +0000 (01:43 -0800)]
[PATCH] optional ZONE_DMA: optional ZONE_DMA in the VM

Make ZONE_DMA optional in core code.

- ifdef all code for ZONE_DMA and related definitions following the example
  for ZONE_DMA32 and ZONE_HIGHMEM.

- Without ZONE_DMA, ZONE_HIGHMEM and ZONE_DMA32 we get to a ZONES_SHIFT of
  0.

- Modify the VM statistics to work correctly without a DMA zone.

- Modify slab to not create DMA slabs if there is no ZONE_DMA.

[akpm@osdl.org: cleanup]
[jdike@addtoit.com: build fix]
[apw@shadowen.org: Simplify calculation of the number of bits we need for ZONES_SHIFT]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA
Christoph Lameter [Sat, 10 Feb 2007 09:43:09 +0000 (01:43 -0800)]
[PATCH] optional ZONE_DMA: introduce CONFIG_ZONE_DMA

This patch simply defines CONFIG_ZONE_DMA for all arches.  We later do special
things with CONFIG_ZONE_DMA after the VM and an arch are prepared to work
without ZONE_DMA.

CONFIG_ZONE_DMA can be defined in two ways depending on how an architecture
handles ISA DMA.

First if CONFIG_GENERIC_ISA_DMA is set by the arch then we know that the arch
needs ZONE_DMA because ISA DMA devices are supported.  We can catch this in
mm/Kconfig and do not need to modify arch code.

Second, arches may use ZONE_DMA in an unknown way.  We set CONFIG_ZONE_DMA for
all arches that do not set CONFIG_GENERIC_ISA_DMA in order to insure backwards
compatibility.  The arches may later undefine ZONE_DMA if their arch code has
been verified to not depend on ZONE_DMA.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] optional ZONE_DMA: deal with cases of ZONE_DMA meaning the first zone
Christoph Lameter [Sat, 10 Feb 2007 09:43:07 +0000 (01:43 -0800)]
[PATCH] optional ZONE_DMA: deal with cases of ZONE_DMA meaning the first zone

This patchset follows up on the earlier work in Andrew's tree to reduce the
number of zones.  The patches allow to go to a minimum of 2 zones.  This one
allows also to make ZONE_DMA optional and therefore the number of zones can be
reduced to one.

ZONE_DMA is usually used for ISA DMA devices.  There are a number of reasons
why we would not want to have ZONE_DMA

1. Some arches do not need ZONE_DMA at all.

2. With the advent of IOMMUs DMA zones are no longer needed.
   The necessity of DMA zones may drastically be reduced
   in the future. This patchset allows a compilation of
   a kernel without that overhead.

3. Devices that require ISA DMA get rare these days. All
   my systems do not have any need for ISA DMA.

4. The presence of an additional zone unecessarily complicates
   VM operations because it must be scanned and balancing
   logic must operate on its.

5. With only ZONE_NORMAL one can reach the situation where
   we have only one zone. This will allow the unrolling of many
   loops in the VM and allows the optimization of varous
   code paths in the VM.

6. Having only a single zone in a NUMA system results in a
   1-1 correspondence between nodes and zones. Various additional
   optimizations to critical VM paths become possible.

Many systems today can operate just fine with a single zone.  If you look at
what is in ZONE_DMA then one usually sees that nothing uses it.  The DMA slabs
are empty (Some arches use ZONE_DMA instead of ZONE_NORMAL, then ZONE_NORMAL
will be empty instead).

On all of my systems (i386, x86_64, ia64) ZONE_DMA is completely empty.  Why
constantly look at an empty zone in /proc/zoneinfo and empty slab in
/proc/slabinfo?  Non i386 also frequently have no need for ZONE_DMA and zones
stay empty.

The patchset was tested on i386 (UP / SMP), x86_64 (UP, NUMA) and ia64 (NUMA).

The RFC posted earlier (see
http://marc.theaimsgroup.com/?l=linux-kernel&m=115231723513008&w=2) had lots
of #ifdefs in them.  An effort has been made to minize the number of #ifdefs
and make this as compact as possible.  The job was made much easier by the
ongoing efforts of others to extract common arch specific functionality.

I have been running this for awhile now on my desktop and finally Linux is
using all my available RAM instead of leaving the 16MB in ZONE_DMA untouched:

christoph@pentium940:~$ cat /proc/zoneinfo
Node 0, zone   Normal
  pages free     4435
        min      1448
        low      1810
        high     2172
        active   241786
        inactive 210170
        scanned  0 (a: 0 i: 0)
        spanned  524224
        present  524224
    nr_anon_pages 61680
    nr_mapped    14271
    nr_file_pages 390264
    nr_slab_reclaimable 27564
    nr_slab_unreclaimable 1793
    nr_page_table_pages 449
    nr_dirty     39
    nr_writeback 0
    nr_unstable  0
    nr_bounce    0
    cpu: 0 pcp: 0
              count: 156
              high:  186
              batch: 31
    cpu: 0 pcp: 1
              count: 9
              high:  62
              batch: 15
  vm stats threshold: 20
    cpu: 1 pcp: 0
              count: 177
              high:  186
              batch: 31
    cpu: 1 pcp: 1
              count: 12
              high:  62
              batch: 15
  vm stats threshold: 20
  all_unreclaimable: 0
  prev_priority:     12
  temp_priority:     12
  start_pfn:         0

This patch:

In two places in the VM we use ZONE_DMA to refer to the first zone.  If
ZONE_DMA is optional then other zones may be first.  So simply replace
ZONE_DMA with zone 0.

This also fixes ZONETABLE_PGSHIFT.  If we have only a single zone then
ZONES_PGSHIFT may become 0 because there is no need anymore to encode the zone
number related to a pgdat.  However, we still need a zonetable to index all
the zones for each node if this is a NUMA system.  Therefore define
ZONETABLE_SHIFT unconditionally as the offset of the ZONE field in page flags.

[apw@shadowen.org: fix mismerge]
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Drop get_zone_counts()
Christoph Lameter [Sat, 10 Feb 2007 09:43:05 +0000 (01:43 -0800)]
[PATCH] Drop get_zone_counts()

Values are available via ZVC sums.

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>
17 years ago[PATCH] Drop __get_zone_counts()
Christoph Lameter [Sat, 10 Feb 2007 09:43:05 +0000 (01:43 -0800)]
[PATCH] Drop __get_zone_counts()

Values are readily available via ZVC per node and global sums.

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>
17 years ago[PATCH] Drop nr_free_pages_pgdat()
Christoph Lameter [Sat, 10 Feb 2007 09:43:04 +0000 (01:43 -0800)]
[PATCH] Drop nr_free_pages_pgdat()

Function is unnecessary now.  We can use the summing features of the ZVCs to
get the values we need.

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>
17 years ago[PATCH] Drop free_pages()
Christoph Lameter [Sat, 10 Feb 2007 09:43:03 +0000 (01:43 -0800)]
[PATCH] Drop free_pages()

nr_free_pages is now a simple access to a global variable.  Make it a macro
instead of a function.

The nr_free_pages now requires vmstat.h to be included.  There is one
occurrence in power management where we need to add the include.  Directly
refrer to global_page_state() there to clarify why the #include was added.

[akpm@osdl.org: arm build fix]
[akpm@osdl.org: sparc64 build fix]
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>
17 years ago[PATCH] Reorder ZVCs according to cacheline
Christoph Lameter [Sat, 10 Feb 2007 09:43:02 +0000 (01:43 -0800)]
[PATCH] Reorder ZVCs according to cacheline

The global and per zone counter sums are in arrays of longs.  Reorder the ZVCs
so that the most frequently used ZVCs are put into the same cacheline.  That
way calculations of the global, node and per zone vm state touches only a
single cacheline.  This is mostly important for 64 bit systems were one 128
byte cacheline takes only 8 longs.

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>
17 years ago[PATCH] Use ZVC for free_pages
Christoph Lameter [Sat, 10 Feb 2007 09:43:02 +0000 (01:43 -0800)]
[PATCH] Use ZVC for free_pages

This is again simplifies some of the VM counter calculations through the use
of the ZVC consolidated counters.

[michal.k.k.piotrowski@gmail.com: build fix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Use ZVC for inactive and active counts
Christoph Lameter [Sat, 10 Feb 2007 09:43:01 +0000 (01:43 -0800)]
[PATCH] Use ZVC for inactive and active counts

The determination of the dirty ratio to determine writeback behavior is
currently based on the number of total pages on the system.

However, not all pages in the system may be dirtied.  Thus the ratio is always
too low and can never reach 100%.  The ratio may be particularly skewed if
large hugepage allocations, slab allocations or device driver buffers make
large sections of memory not available anymore.  In that case we may get into
a situation in which f.e.  the background writeback ratio of 40% cannot be
reached anymore which leads to undesired writeback behavior.

This patchset fixes that issue by determining the ratio based on the actual
pages that may potentially be dirty.  These are the pages on the active and
the inactive list plus free pages.

The problem with those counts has so far been that it is expensive to
calculate these because counts from multiple nodes and multiple zones will
have to be summed up.  This patchset makes these counters ZVC counters.  This
means that a current sum per zone, per node and for the whole system is always
available via global variables and not expensive anymore to calculate.

The patchset results in some other good side effects:

- Removal of the various functions that sum up free, active and inactive
  page counts

- Cleanup of the functions that display information via the proc filesystem.

This patch:

The use of a ZVC for nr_inactive and nr_active allows a simplification of some
counter operations.  More ZVC functionality is used for sums etc in the
following patches.

[akpm@osdl.org: UP build fix]
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>
17 years ago[PATCH] page_mkwrite caller race fix
Hugh Dickins [Sat, 10 Feb 2007 09:43:00 +0000 (01:43 -0800)]
[PATCH] page_mkwrite caller race fix

After do_wp_page has tested page_mkwrite, it must release old_page after
acquiring page table lock, not before: at some stage that ordering got
reversed, leaving a (very unlikely) window in which old_page might be
truncated, freed, and reused in the same position.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] typeof __page_to_pfn with SPARSEMEM=y
Randy Dunlap [Sat, 10 Feb 2007 09:42:59 +0000 (01:42 -0800)]
[PATCH] typeof __page_to_pfn with SPARSEMEM=y

With CONFIG_SPARSEMEM=y:

mm/rmap.c:579: warning: format '%lx' expects type 'long unsigned int', but argument 2 has type 'int'

Make __page_to_pfn() return unsigned long.

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>
17 years ago[PATCH] /proc/zoneinfo: fix vm stats display
Andrew Morton [Sat, 10 Feb 2007 09:42:58 +0000 (01:42 -0800)]
[PATCH] /proc/zoneinfo: fix vm stats display

This early break prevents us from displaying info for the vm stats thresholds
if the zone doesn't have any pages in its per-cpu pagesets.

So my 800MB i386 box says:

Node 0, zone      DMA
  pages free     2365
        min      16
        low      20
        high     24
        active   0
        inactive 0
        scanned  0 (a: 0 i: 0)
        spanned  4096
        present  4044
    nr_anon_pages 0
    nr_mapped    1
    nr_file_pages 0
    nr_slab_reclaimable 0
    nr_slab_unreclaimable 0
    nr_page_table_pages 0
    nr_dirty     0
    nr_writeback 0
    nr_unstable  0
    nr_bounce    0
    nr_vmscan_write 0
        protection: (0, 868, 868)
  pagesets
  all_unreclaimable: 0
  prev_priority:     12
  start_pfn:         0
Node 0, zone   Normal
  pages free     199713
        min      934
        low      1167
        high     1401
        active   10215
        inactive 4507
        scanned  0 (a: 0 i: 0)
        spanned  225280
        present  222420
    nr_anon_pages 2685
    nr_mapped    1110
    nr_file_pages 12055
    nr_slab_reclaimable 2216
    nr_slab_unreclaimable 1527
    nr_page_table_pages 213
    nr_dirty     0
    nr_writeback 0
    nr_unstable  0
    nr_bounce    0
    nr_vmscan_write 0
        protection: (0, 0, 0)
  pagesets
    cpu: 0 pcp: 0
              count: 152
              high:  186
              batch: 31
    cpu: 0 pcp: 1
              count: 13
              high:  62
              batch: 15
  vm stats threshold: 16
    cpu: 1 pcp: 0
              count: 34
              high:  186
              batch: 31
    cpu: 1 pcp: 1
              count: 10
              high:  62
              batch: 15
  vm stats threshold: 16
  all_unreclaimable: 0
  prev_priority:     12
  start_pfn:         4096

Just nuke all that search-for-the-first-non-empty-pageset code.  Dunno why it
was there in the first place..

Cc: Christoph Lameter <clameter@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Avoid excessive sorting of early_node_map[]
Mel Gorman [Sat, 10 Feb 2007 09:42:57 +0000 (01:42 -0800)]
[PATCH] Avoid excessive sorting of early_node_map[]

find_min_pfn_for_node() and find_min_pfn_with_active_regions() sort
early_node_map[] on every call.  This is an excessive amount of sorting and
that can be avoided.  This patch always searches the whole early_node_map[]
in find_min_pfn_for_node() instead of returning the first value found.  The
map is then only sorted once when required.  Successfully boot tested on a
number of machines.

[akpm@osdl.org: cleanup]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Remove final references to deprecated "MAP_ANON" page protection flag
Robert P. J. Day [Sat, 10 Feb 2007 09:42:56 +0000 (01:42 -0800)]
[PATCH] Remove final references to deprecated "MAP_ANON" page protection flag

Remove the last vestiges of the long-deprecated "MAP_ANON" page protection
flag: use "MAP_ANONYMOUS" instead.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] slab: use parameter passed to cache_reap to determine pointer to work structure
Christoph Lameter [Sat, 10 Feb 2007 09:42:55 +0000 (01:42 -0800)]
[PATCH] slab: use parameter passed to cache_reap to determine pointer to work structure

Use the pointer passed to cache_reap to determine the work pointer and
consolidate exit paths.

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>
17 years ago[PATCH] slab: cache alloc cleanups
Pekka Enberg [Sat, 10 Feb 2007 09:42:53 +0000 (01:42 -0800)]
[PATCH] slab: cache alloc cleanups

Clean up __cache_alloc and __cache_alloc_node functions a bit.  We no
longer need to do NUMA_BUILD tricks and the UMA allocation path is much
simpler.  No functional changes in this patch.

Note: saves few kernel text bytes on x86 NUMA build due to using gotos in
__cache_alloc_node() and moving __GFP_THISNODE check in to
fallback_alloc().

Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Manfred Spraul <manfred@colorfullife.com>
Acked-by: Christoph Lameter <christoph@lameter.com>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] slab: remove broken PageSlab check from kfree_debugcheck
Pekka Enberg [Sat, 10 Feb 2007 09:42:52 +0000 (01:42 -0800)]
[PATCH] slab: remove broken PageSlab check from kfree_debugcheck

The PageSlab debug check in kfree_debugcheck() is broken for compound
pages.  It is also redundant as we already do BUG_ON for non-slab pages in
page_get_cache() and page_get_slab() which are always called before we free
any actual objects.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agolibata: kill ATA_ENABLE_PATA
Jeff Garzik [Wed, 7 Feb 2007 03:19:10 +0000 (22:19 -0500)]
libata: kill ATA_ENABLE_PATA

The ATA_ENABLE_PATA define was never meant to be permanent, and in
recent kernels, it's already been unconditionally enabled.  Remove.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: build fix after dmesg probe output changes
Jeff Garzik [Wed, 7 Feb 2007 02:08:14 +0000 (21:08 -0500)]
libata: build fix after dmesg probe output changes

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: Early CFA adapters are not required to support mode setting
Alan [Mon, 5 Feb 2007 16:28:30 +0000 (16:28 +0000)]
libata: Early CFA adapters are not required to support mode setting

If we are doing a PIO setup for a CFA card and it blows up with a device
error then assume it is an older CFA card which doesn't support this
rather than failing the device out of existance.

Stands seperate to the quieting patch but that is obviously useful with
this change.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_nv: propagate ata_pci_device_do_resume return value
Robert Hancock [Tue, 6 Feb 2007 00:26:04 +0000 (16:26 -0800)]
sata_nv: propagate ata_pci_device_do_resume return value

ata_pci_device_do_resume can fail if the PCI device couldn't be re-enabled.
 Update sata_nv to propagate the return value from this call and to not try
to do any other resume activities if it fails.  Fixes a compile warning.

Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_nv: wait for response on entering/leaving ADMA mode
Robert Hancock [Tue, 6 Feb 2007 00:26:03 +0000 (16:26 -0800)]
sata_nv: wait for response on entering/leaving ADMA mode

Update sata_nv to wait for the controller to indicate via the status
register that it has entered the requested state when switching between
ADMA mode and register mode.  This issue came up recently when debugging
some problems with cache flush command timeouts and while it didn't appear
to fix that problem, this is something we should likely be doing in any
case.

Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_nv: use ADMA for NODATA commands
Robert Hancock [Tue, 6 Feb 2007 00:26:02 +0000 (16:26 -0800)]
sata_nv: use ADMA for NODATA commands

Some problems showed up recently with cache flush commands timing out on
sata_nv.  Previously these commands were always handled by transitioning to
legacy mode from ADMA mode first.  The timeout problem was worked around
already by a change to the interrupt handling code for legacy mode, but for
non-data commands like these it appears we can handle them in ADMA mode, so
the switch to legacy mode is not needed.

This patch changes the behavior so that we use ADMA mode to submit
interrupt-driven commands with ATA_PROT_NODATA protocol.  In addition to
avoiding the problem mentioned above entirely, this avoids the overhead of
switching to legacy mode and back to ADMA mode for handling cache flushes.
When handling non-DMA-mapped commands, we leave the APRD blank and clear
the NV_CPB_CTL_APRD_VALID field in the CPB so the controller does not
attempt to read it.

Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_nv: cleanup ADMA error handling
Robert Hancock [Tue, 6 Feb 2007 00:26:01 +0000 (16:26 -0800)]
sata_nv: cleanup ADMA error handling

This cleans up a few issues with the error handling in sata_nv in ADMA mode
to make it more consistent with other NCQ-capable drivers like ahci and
sata_sil24:

- When a command failed, we would effectively set AC_ERR_DEV on the
  queued command always.  In the case of NCQ commands this prevents libata
  from doing a log page query to determine the details of the failed
  command, since it thinks we've already analyzed.  Just set flags in the
  port ehi->err_mask, then freeze or abort and let libata figure out what
  went wrong.

- The code handled NV_ADMA_STAT_CPBERR as a "really bad error" which
  caused it to set error flags on every queued command.  I don't know
  exactly what this flag means (no docs, grr!) but from what I can guess
  from the standard ADMA spec, it just means that one or more of the CPBs
  had an error, so we just need to go through and do our normal checks in
  this case.

- In the error_handler function the code would always dump the state of
  all the CPBs.  This output seems redundant at this point since libata
  already dumps the state of all active commands on errors (and it also
  triggers at times when it shouldn't, like when suspending).  Take this
  out.

[akpm@osdl.org: many coding-style fixes]
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Allen Martin <AMartin@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago(2.6.20) pata_mpiix: probing cleanup (resend)
Sergei Shtylyov [Mon, 5 Feb 2007 18:08:55 +0000 (21:08 +0300)]
(2.6.20) pata_mpiix: probing cleanup (resend)

MPIIX has only single channel IDE which can be configured for either primary or
secondary legacy I/O ports and IRQ.  So, get rid of the unneeded second probe
entry in mpiix_init_one() and of the invalid (but unused anyway) enable bits in
mpiix_pre_reset().

Warning: this cleanup has only been compile-tested...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago(2.6.20) pata_mpiix: fix PIO setup issues
Sergei Shtylyov [Mon, 5 Feb 2007 17:24:57 +0000 (20:24 +0300)]
(2.6.20) pata_mpiix: fix PIO setup issues

Fix clearing/setting the wrong TIME/IE/PPE bits for a slave drive caused by a
wrong shift count.
Fix the PIO mode 1 being overclocked by wrongly selecting the fast timing bank.
Also, fix/rephrase some comments while at it.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago(2.6.20) pata_oldpiix: fix PIO2 underclocking
Sergei Shtylyov [Mon, 5 Feb 2007 16:45:38 +0000 (19:45 +0300)]
(2.6.20) pata_oldpiix: fix PIO2 underclocking

Fix the PIO mode 2 using mode 0 timings -- this driver should enable the
fast timing bank starting with PIO2, just like the ata_piix driver does.
Also, fix/rephrase some comments while at it.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoata: Add defines for the iordy bits
Alan [Mon, 5 Feb 2007 16:17:19 +0000 (16:17 +0000)]
ata: Add defines for the iordy bits

IORDY and IORDY enable/disable flags.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoKconfig: clarify ATA_PIIX description
Alan [Mon, 5 Feb 2007 16:04:10 +0000 (16:04 +0000)]
Kconfig: clarify ATA_PIIX description

People are getting confused about which drivers to enable for PATA PIIX
type devices. Change the ATA_PIIX line and help to make it clearer.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_inic162x: fix a few glitches in hardreset
Tejun Heo [Fri, 2 Feb 2007 06:29:52 +0000 (15:29 +0900)]
sata_inic162x: fix a few glitches in hardreset

* Hardreset must not exit without actually performing reset regardless
  of link status.  We're resetting the link after all.

* Minor message update.

* 150ms delay is meaningful iff link is online after reset is
  complete.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: add 150ms between completion of hardreset and status checking
Tejun Heo [Fri, 2 Feb 2007 06:29:27 +0000 (15:29 +0900)]
libata: add 150ms between completion of hardreset and status checking

Follow the old SRST rule and delay 150ms between completion of
hardreset and status checking.  Debouncing delay should usually cover
this but debounce duration could be shorter than 150ms under certain
circumstances.

Usefulness depends on host controller implementation but it can't hurt
and serves as a reminder that 2s delay for GoVault should also be
added here.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: rearrange dmesg info to add full ATA revision
Eric D. Mudama [Wed, 31 Jan 2007 06:00:40 +0000 (23:00 -0700)]
libata: rearrange dmesg info to add full ATA revision

Per Jeff's suggestion, this patch rearranges the info printed for ATA
drives into dmesg to add the full ATA firmware revision and model
information, while keeping the output to 2 lines.

Signed-off-by: Eric D. Mudama <edmudama@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agopata_sl82c105: wrong assumptions about compatible PIO modes
Sergei Shtylyov [Tue, 30 Jan 2007 17:40:30 +0000 (20:40 +0300)]
pata_sl82c105: wrong assumptions about compatible PIO modes

Fix the wrong "compatible" PIO mode choices: MWDMA0 has 480 ns cycle while PIO1
only has 383 ns cycle, and MWDMA2 timings matchs those of PIO4 exactly.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: add another IRQ calls (libata drivers)
Akira Iguchi [Fri, 26 Jan 2007 07:27:58 +0000 (16:27 +0900)]
libata: add another IRQ calls (libata drivers)

This patch is against each libata driver.

Two IRQ calls are added in ata_port_operations.
- irq_on() is used to enable interrupts.
- irq_ack() is used to acknowledge a device interrupt.

In most drivers, ata_irq_on() and ata_irq_ack() are used for
irq_on and irq_ack respectively.

In some drivers (ex: ahci, sata_sil24) which cannot use them
as is, ata_dummy_irq_on() and ata_dummy_irq_ack() are used.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: add another IRQ calls (core and headers)
Akira Iguchi [Fri, 26 Jan 2007 07:27:32 +0000 (16:27 +0900)]
libata: add another IRQ calls (core and headers)

This patch is against the libata core and headers.

Two IRQ calls are added in ata_port_operations.
- irq_on() is used to enable interrupts.
- irq_ack() is used to acknowledge a device interrupt.

In most drivers, ata_irq_on() and ata_irq_ack() are used for
irq_on and irq_ack respectively.

In some drivers (ex: ahci, sata_sil24) which cannot use them
as is, ata_dummy_irq_on() and ata_dummy_irq_ack() are used.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agogit-libata-all: forward declare struct device
Andrew Morton [Sat, 3 Feb 2007 02:07:15 +0000 (18:07 -0800)]
git-libata-all: forward declare struct device

In file included from drivers/infiniband/hw/ipath/ipath_diag.c:44:
include/linux/io.h:35: warning: 'struct device' declared inside parameter list
include/linux/io.h:35: warning: its scope is only this definition or declaration

Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: convert to iomap
Tejun Heo [Thu, 1 Feb 2007 06:06:36 +0000 (15:06 +0900)]
libata: convert to iomap

Convert libata core layer and LLDs to use iomap.

* managed iomap is used.  Pointer to pcim_iomap_table() is cached at
  host->iomap and used through out LLDs.  This basically replaces
  host->mmio_base.

* if possible, pcim_iomap_regions() is used

Most iomap operation conversions are taken from Jeff Garzik
<jgarzik@pobox.com>'s iomap branch.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agopata_platform: fix devres conversion
Tejun Heo [Thu, 1 Feb 2007 06:05:22 +0000 (15:05 +0900)]
pata_platform: fix devres conversion

devres updates for pata_platform were dropped while merging devres
patches due to merge conflict.  This is the updated version.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoiomap: iomap should be in obj-y not in lib-y
Tejun Heo [Wed, 31 Jan 2007 13:48:06 +0000 (22:48 +0900)]
iomap: iomap should be in obj-y not in lib-y

devres change moved iomap.o from obj-$(CONFIG_GENERIC_IOMAP) to lib-y
making it not linked if no in-kernel driver uses it.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[libata] Shuffle DRV_xxx in core and SiS drivers, to kill warnings
Jeff Garzik [Wed, 31 Jan 2007 12:43:15 +0000 (07:43 -0500)]
[libata] Shuffle DRV_xxx in core and SiS drivers, to kill warnings

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agodevres: implement pcim_iomap_regions()
Tejun Heo [Sat, 20 Jan 2007 07:00:28 +0000 (16:00 +0900)]
devres: implement pcim_iomap_regions()

Implement pcim_iomap_regions().  This function takes mask of BARs to
request and iomap.  No BAR should have length of zero.  BARs are
iomapped using pcim_iomap_table().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: remove unused functions
Tejun Heo [Sat, 20 Jan 2007 07:00:28 +0000 (16:00 +0900)]
libata: remove unused functions

Now that all LLDs are converted to use devres, default stop callbacks
are unused.  Remove them.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: update libata LLDs to use devres
Tejun Heo [Sat, 20 Jan 2007 07:00:28 +0000 (16:00 +0900)]
libata: update libata LLDs to use devres

Update libata LLDs to use devres.  Core layer is already converted to
support managed LLDs.  This patch simplifies initialization and fixes
many resource related bugs in init failure and detach path.  For
example, all converted drivers now handle ata_device_add() failure
gracefully without excessive resource rollback code.

As most resources are released automatically on driver detach, many
drivers don't need or can do with much simpler ->{port|host}_stop().
In general, stop callbacks are need iff port or host needs to be given
commands to shut it down.  Note that freezing is enough in many cases
and ports are automatically frozen before being detached.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: update libata core layer to use devres
Tejun Heo [Sat, 20 Jan 2007 07:00:28 +0000 (16:00 +0900)]
libata: update libata core layer to use devres

Update libata core layer to use devres.

* ata_device_add() acquires all resources in managed mode.

* ata_host is allocated as devres associated with ata_host_release.

* Port attached status is handled as devres associated with
  ata_host_attach_release().

* Initialization failure and host removal is handedl by releasing
  devres group.

* Except for ata_scsi_release() removal, LLD interface remains the
  same.  Some functions use hacky is_managed test to support both
  managed and unmanaged devices.  These will go away once all LLDs are
  updated to use devres.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: implement ata_host_detach()
Tejun Heo [Sat, 20 Jan 2007 07:00:26 +0000 (16:00 +0900)]
libata: implement ata_host_detach()

Implement ata_host_detach() which calls ata_port_detach() for each
port in the host and export it.  ata_port_detach() is now internal and
thus un-exported.  ata_host_detach() will be used as the 'deregister
from libata layer' function after devres conversion.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agodevres: device resource management
Tejun Heo [Sat, 20 Jan 2007 07:00:26 +0000 (16:00 +0900)]
devres: device resource management

Implement device resource management, in short, devres.  A device
driver can allocate arbirary size of devres data which is associated
with a release function.  On driver detach, release function is
invoked on the devres data, then, devres data is freed.

devreses are typed by associated release functions.  Some devreses are
better represented by single instance of the type while others need
multiple instances sharing the same release function.  Both usages are
supported.

devreses can be grouped using devres group such that a device driver
can easily release acquired resources halfway through initialization
or selectively release resources (e.g. resources for port 1 out of 4
ports).

This patch adds devres core including documentation and the following
managed interfaces.

* alloc/free : devm_kzalloc(), devm_kzfree()
* IO region : devm_request_region(), devm_release_region()
* IRQ : devm_request_irq(), devm_free_irq()
* DMA : dmam_alloc_coherent(), dmam_free_coherent(),
  dmam_declare_coherent_memory(), dmam_pool_create(),
  dmam_pool_destroy()
* PCI : pcim_enable_device(), pcim_pin_device(), pci_is_managed()
* iomap : devm_ioport_map(), devm_ioport_unmap(), devm_ioremap(),
  devm_ioremap_nocache(), devm_iounmap(), pcim_iomap_table(),
  pcim_iomap(), pcim_iounmap()

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agofix CONFIG_SATA_SIS=y compile error
Adrian Bunk [Tue, 30 Jan 2007 08:59:17 +0000 (00:59 -0800)]
fix CONFIG_SATA_SIS=y compile error

Static code shouldn't be used from other modules.

drivers/built-in.o: In function `sis_init_one':
sata_sis.c:(.text+0x7634cd): undefined reference to `sis_info133'
sata_sis.c:(.text+0x7634d6): undefined reference to `sis_info133'

While I was at it, I also moved the prototype of this struct to a header
file.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_sis: Support for PATA supports
Alan [Mon, 8 Jan 2007 16:11:07 +0000 (16:11 +0000)]
sata_sis: Support for PATA supports

This is quick rework of the patch Uwe proposed but using Kconfig not
ifdefs and user selection to sort out PATA support. Instead of ifdefs and
requiring the user to select both drivers the SATA driver selects the
PATA one.

For neatness I've also moved the extern into the function that uses it.

Signed-off-by: Alan Cox
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: implement HDIO_GET_IDENTITY
Tejun Heo [Tue, 2 Jan 2007 11:20:07 +0000 (20:20 +0900)]
libata: implement HDIO_GET_IDENTITY

'hdparm -I' doesn't work with ATAPI devices and sg_sat is not widely
spread yet leaving no easy way to access ATAPI IDENTIFY data.
Implement HDIO_GET_IDENTITY such that at least 'hdparm -i' works.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: trivial stuff
Alan [Wed, 24 Jan 2007 11:42:38 +0000 (11:42 +0000)]
libata: trivial stuff

Readability/typos etc

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_promise: kill qc->nsect
Tejun Heo [Sat, 20 Jan 2007 04:12:46 +0000 (13:12 +0900)]
sata_promise: kill qc->nsect

Merge order left qc->nsect usage in sata_promise dangling.  Kill it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata piix3 support warning fix
Andrew Morton [Thu, 11 Jan 2007 01:20:34 +0000 (17:20 -0800)]
libata piix3 support warning fix

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: PIIX3 support
Alan [Wed, 10 Jan 2007 17:13:38 +0000 (17:13 +0000)]
libata: PIIX3 support

This I believe completes the PIIX range of support for libata

This adds the table entries needed for the PIIX3, both a new PCI
identifier and a new mode list. It also fixes an erroneous access to PCI
configuration 0x48 on non UDMA capable chips.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_promise: handle ATAPI_NODATA ourselves
Mikael Pettersson [Sat, 13 Jan 2007 20:32:30 +0000 (21:32 +0100)]
sata_promise: handle ATAPI_NODATA ourselves

This patch extends sata_promise to handle ATAPI_NODATA
commands internally. However, commands destined to
ATA_DFLAG_CDB_INTR devices are excluded from this and
continue to be returned to libata.

Concrete changes:
- pdc_atapi_dma_pkt() is renamed to pdc_atapi_pkt(), and is
  extended to set up correct headers for NODATA packets
- pdc_qc_prep() calls pdc_atapi_pkt() for ATAPI_NODATA
- pdc_host_intr() handles ATAPI_NODATA
- pdc_qc_issue_prot() sends ATAPI_NODATA packets via the
  chip's packet mechanism, except for CDB_INTR devices

Tested on first- and second-generation chips, SATAPI and PATAPI,
with no observable regressions.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_promise: issue ATAPI commands as normal packets
Mikael Pettersson [Sat, 13 Jan 2007 20:31:05 +0000 (21:31 +0100)]
sata_promise: issue ATAPI commands as normal packets

This patch (against libata #upstream + the ATAPI cleanup patch)
reimplements sata_promise's ATAPI support to format ATAPI DMA
commands as normal packets, and to issue them via the hardware's
normal packet machinery.

It turns out that the only reason for issuing ATAPI DMA
commands via the pdc_issue_atapi_pkt_cmd() procedure was to
perform two interrupt-fiddling steps for ATA_DFLAG_CDB_INTR
devices. But these steps aren't needed because sata_promise
sets ATA_FLAG_PIO_POLLING, which disables DMA for those devices.
The remaining steps can easily be done in ATA taskfile packets.

Concrete changes:
- pdc_atapi_dma_pkt() is extended to program all packet setup
  steps, and not just contain the CDB; the sequence of steps
  exactly mirrors what pdc_issue_atapi_pkt_cmd() did
- pdc_atapi_dma_pkt() needed more parameters: simplify it by
  just passing 'qc' and having it extract the data it needs
- pdc_issue_atai_pkt_cmd() and its two helper procedures
  pdc_wait_for_drq() and pdc_wait_on_busy() are removed

Tested on first- and second-generation chips, SATAPI and PATAPI,
with no observable regressions.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_promise: ATAPI cleanup
Mikael Pettersson [Wed, 10 Jan 2007 08:32:34 +0000 (09:32 +0100)]
sata_promise: ATAPI cleanup

Here's a cleanup for yesterday's sata_promise ATAPI patch:
- add and use a symbolic constant for the altstatus register
- check return status from ata_busy_wait()
- add missing newline in a warning printk()
- update comment in pdc_issue_atapi_pkt_cmd() to clarify
  that the maybe-wait-for-INT issue cannot occur in the
  current driver, but may occur if the driver starts issuing
  ATAPI non-DMA commands as PDC packets

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_inic162x: finally, driver for initio 162x SATA controllers, take #2
Tejun Heo [Wed, 3 Jan 2007 08:32:45 +0000 (17:32 +0900)]
sata_inic162x: finally, driver for initio 162x SATA controllers, take #2

Driver for Initio 162x SATA controllers.  ATA r/w, ATAPI r, hotplug
and suspend/resume work.  ATAPI w (recording, that is) broken.  Feel
free to fix it, but be warned, this controller is weird.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: kill qc->nsect and cursect
Tejun Heo [Wed, 3 Jan 2007 08:30:39 +0000 (17:30 +0900)]
libata: kill qc->nsect and cursect

libata used two separate sets of variables to record request size and
current offset for ATA and ATAPI.  This is confusing and fragile.
This patch replaces qc->nsect/cursect with qc->nbytes/curbytes and
kills them.  Also, ata_pio_sector() is updated to use bytes for
qc->cursg_ofs instead of sectors.  The field used to be used in bytes
for ATAPI and in sectors for ATA.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[libata] sata_vsc: build fix after PCI MSI feature addition
Jeff Garzik [Tue, 9 Jan 2007 11:28:24 +0000 (06:28 -0500)]
[libata] sata_vsc: build fix after PCI MSI feature addition

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[libata] sata_vsc: support PCI MSI
Dan Wolstenholme [Tue, 9 Jan 2007 10:59:21 +0000 (05:59 -0500)]
[libata] sata_vsc: support PCI MSI

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: handle pci_enable_device() failure while resuming
Tejun Heo [Tue, 26 Dec 2006 10:39:50 +0000 (19:39 +0900)]
libata: handle pci_enable_device() failure while resuming

Handle pci_enable_device() failure while resuming.  This patch kills
the "ignoring return value of 'pci_enable_device'" warning message and
propagates __must_check through ata_pci_device_do_resume().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: use ata_id_c_string()
Tejun Heo [Tue, 2 Jan 2007 11:19:40 +0000 (20:19 +0900)]
libata: use ata_id_c_string()

There were several places where ATA ID strings are manually terminated
and in some places possibly unterminated strings were passed to string
functions which don't limit length like strstr().  This patch converts
all of them over to ata_id_c_string().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata: straighten out ATA_ID_* constants
Tejun Heo [Tue, 2 Jan 2007 11:18:49 +0000 (20:18 +0900)]
libata: straighten out ATA_ID_* constants

* Kill _OFS suffixes in ATA_ID_{SERNO|FW_REV|PROD}_OFS for consistency
  with other ATA_ID_* constants.

* Kill ATA_SERNO_LEN

* Add and use ATA_ID_SERNO_LEN, ATA_ID_FW_REV_LEN and ATA_ID_PROD_LEN.
  This change also makes ata_device_blacklisted() use proper length
  for fwrev.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_nv: add suspend/resume support v3 (Resubmit)
Robert Hancock [Thu, 4 Jan 2007 00:13:57 +0000 (18:13 -0600)]
sata_nv: add suspend/resume support v3 (Resubmit)

Thoughts from Jeff & company on merging the patch below into libata-dev?
This has been in the -mm tree for over a month now, I haven't heard any
complaints about regressions..

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agodrivers/ata/: make 4 functions static
Adrian Bunk [Wed, 3 Jan 2007 23:09:36 +0000 (00:09 +0100)]
drivers/ata/: make 4 functions static

This patch makes the following needlessly global functions static:
- libata-core.c: ata_qc_complete_internal()
- libata-scsi.c: ata_scsi_qc_new()
- libata-scsi.c: ata_dump_status()
- libata-scsi.c: ata_to_sense_error()

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoahci: Remove jmicron fixup
Alan [Mon, 8 Jan 2007 12:07:25 +0000 (12:07 +0000)]
ahci: Remove jmicron fixup

The AHCI set up is handled properly along with the other bits in the
JMICRON quirk. Remove the code whacking it in ahci.c as its un-needed and
also blindly fiddles with bits it doesn't own.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agolibata-sff: Don't try and activate channels which are not in use
Alan [Mon, 8 Jan 2007 12:10:05 +0000 (12:10 +0000)]
libata-sff: Don't try and activate channels which are not in use

An ATA controller in native mode may have one or more channels disabled
and not assigned resources. In that case the existing code crashes trying
to access I/O ports 0-7.

Add the neccessary check.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_via: PATA support
Alan [Mon, 8 Jan 2007 17:11:13 +0000 (17:11 +0000)]
sata_via: PATA support

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agopata_sis: implement laptop list and add ASUS A6K/A6U
Jakub W. Jozwicki J [Tue, 9 Jan 2007 00:01:19 +0000 (09:01 +0900)]
pata_sis: implement laptop list and add ASUS A6K/A6U

In ASUS A6K/A6U hdd is connected to SiS 96x via 40c cable, however it
is short cable and is UDMA66 capable.

tj: fixed if () conditionals
ah: fixed infinite loop

Signed-off-by: Jakub W. Jozwicki <jakub007@go2.pl>
Cc: Andreas Henriksson <andreas@fatal.se>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoata_piix: add ICH7 on Acer 3682WLMi to laptop list
J J [Mon, 8 Jan 2007 17:26:30 +0000 (02:26 +0900)]
ata_piix: add ICH7 on Acer 3682WLMi to laptop list

In Acer Aspire hdd is connected to ICH7 via 40c cable, however it is
short cable and it is UDMA66 capable.

Signed-off-by: J J <jakub007@go2.pl>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agoAdd pci class code for SATA & AHCI, and replace some magic numbers.
Conke Hu [Tue, 9 Jan 2007 10:32:51 +0000 (05:32 -0500)]
Add pci class code for SATA & AHCI, and replace some magic numbers.

Signed-off-by: Conke Hu <conke.hu@amd.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_promise: ATAPI support
Mikael Pettersson [Tue, 9 Jan 2007 09:51:46 +0000 (10:51 +0100)]
sata_promise: ATAPI support

This patch adds ATAPI support to the sata_promise driver.
This has been tested on both first- and second-generation
chips (20378 and 20575), and with both SATAPI and PATAPI
devices. CD-writing works.

SATAPI DMA works on second-generation chips, but on
first-generation chips SATAPI is limited to PIO due
to what appears to be HW limitations.
PATAPI DMA works on both first- and second-generation
chips, but requires the separate PATA support patch
before it can be used on TX2plus chips.

The functional changes to the driver are:
- remove ATA_FLAG_NO_ATAPI from PDC_COMMON_FLAGS
- add ->check_atapi_dma() operation to enable DMA for bulk data
  transfers but force PIO for other ATAPI commands; this filter
  is from Promise's driver and largely matches pata_pdc207x.c
- use a more restrictive ->check_atapi_dma() on first-generation
  chips to force SATAPI to always use PIO
- add handling of ATAPI protocols to pdc_qc_prep(), pdc_host_intr(),
  and pdc_qc_issue_prot(): ATAPI_DMA is handled by the driver
  while non-DMA protocols are handed over to libata generic code
- add pdc_issue_atapi_pkt_cmd() to handle the initial steps in
  issuing ATAPI DMA commands before sending the actual CDB;
  this procedure was ported from Promise's driver

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years agosata_promise: TX2plus PATA support
Mikael Pettersson [Tue, 9 Jan 2007 09:50:27 +0000 (10:50 +0100)]
sata_promise: TX2plus PATA support

This patch implements a simple way of setting up per-port
flags on the SATA+PATA Promise TX2plus chips, which is a
prerequisite for supporting the PATA port on those chips.

It is based on the observation that ap->flags isn't really
used until after ->port_start() has been invoked. So it
places the "exceptional" per-port flags array in the driver's
private host structure, and uses it in ->port_start() to
finalise the port's flags.

This patch obsoletes the #promise-sata-pata branch included
in the #all branch.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] user of the jiffies rounding patch: ATA subsystem
Arjan van de Ven [Tue, 19 Dec 2006 21:05:53 +0000 (13:05 -0800)]
[PATCH] user of the jiffies rounding patch: ATA subsystem

This patch introduces users of the round_jiffies() function: ATA subsystem

This delayed work is of the "about once a second" variety and can be rounded
to coincide with other wakers.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] pci: Move PCI_VDEVICE from libata to core
Alan Cox [Fri, 15 Dec 2006 21:08:50 +0000 (13:08 -0800)]
[PATCH] pci: Move PCI_VDEVICE from libata to core

Updated diff which doesn't move the comment as per Jeff's request and
corrects the docs as per report on l/k

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[libata] trim trailing whitespace
Jeff Garzik [Mon, 11 Dec 2006 16:14:06 +0000 (11:14 -0500)]
[libata] trim trailing whitespace

Most of these contributed by that mysterious figger known as A.C.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] libata: Add support for the MPC52xx ATA controller
Sylvain Munaut [Thu, 7 Dec 2006 23:14:16 +0000 (00:14 +0100)]
[PATCH] libata: Add support for the MPC52xx ATA controller

This patch adds initial libata support for the Freescale
MPC5200 integrated IDE controller.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] pata_it8213: Add new driver for the IT8213 card
Alan [Thu, 7 Dec 2006 16:59:14 +0000 (08:59 -0800)]
[PATCH] pata_it8213: Add new driver for the IT8213 card

Add a driver for the IT8213 which is a single channel ICH-ish PATA
controller.  As it is very different to the IT8211/2 it gets its own
driver.  There is a legacy drivers/ide driver also available and I'll post
that once I get time to test it all out (probably early January).  If
anyone else needs the drivers/ide driver and wants to do the merge for
drivers/ide (Bart ??) then I'll forward it.

[akpm@osdl.org: add PCI ID, constify needed_pio[]]
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] sata_sis: support SiS966/966L
Uwe Koziolek [Mon, 4 Dec 2006 00:34:42 +0000 (01:34 +0100)]
[PATCH] sata_sis: support SiS966/966L

The SiS966/966L has different PCI-IDs for native mode and AHCI mode.
The SiS966 supports four SATA ports only in native mode.

Added additional PCI-ID 0x0183 for SiS965/965L.

this patch is based on the code from David Wang from SiS Corporation published on SiS Website.

Signed-off-by: Uwe Koziolek <uwe.koziolek@gmx.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
17 years ago[PATCH] m68knommu: use irq_handler_t for passing handler types
Greg Ungerer [Wed, 7 Feb 2007 02:03:19 +0000 (12:03 +1000)]
[PATCH] m68knommu: use irq_handler_t for passing handler types

Use irq_handler_t for passing clock handler routine around.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] m68knommu: removed include of system.h from bitops
Greg Ungerer [Wed, 7 Feb 2007 02:03:14 +0000 (12:03 +1000)]
[PATCH] m68knommu: removed include of system.h from bitops

Remove include of asm/system.h, not needed.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] uclinux: correctly remap bin_fmtflat exe allocated mem regions
Greg Ungerer [Wed, 7 Feb 2007 02:03:08 +0000 (12:03 +1000)]
[PATCH] uclinux: correctly remap bin_fmtflat exe allocated mem regions

remap() the region we get from mmap() to mark the fact that we are
using all of the available slack space. Any slack space is used
to form a simple brk region, and potentially more stack space than
requested at load time.

Any searches of the vma chain may well fail looking for
stack (and especially arg) addresses if the remaping is not done.
The simplest example is /proc/<pid>/cmdline, since the args
are pretty much always at the top of the data/bss/stack region.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] m68knommu: use irq_handler_t passing handler to clock init
Greg Ungerer [Wed, 7 Feb 2007 02:03:01 +0000 (12:03 +1000)]
[PATCH] m68knommu: use irq_handler_t passing handler to clock init

Use irq_handler_t for passing interrupt handler around.
Fix optional profiler handler to return a irq_return_t type.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] m68knommu: use irq_handler_t passing handler to PIT init
Greg Ungerer [Wed, 7 Feb 2007 02:02:52 +0000 (12:02 +1000)]
[PATCH] m68knommu: use irq_handler_t passing handler to PIT init

Use irq_handler_t type for passing timer handler to timer init code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] m68knommu: include unused sections in linker script
Greg Ungerer [Wed, 7 Feb 2007 01:45:43 +0000 (11:45 +1000)]
[PATCH] m68knommu: include unused sections in linker script

Include the unused sections in the m68knommu linker scripts.
Needed for modules support.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] m68knommu: remove regs arg from coldfire timer interrupt
Greg Ungerer [Wed, 7 Feb 2007 01:35:29 +0000 (11:35 +1000)]
[PATCH] m68knommu: remove regs arg from coldfire timer interrupt

Fix coldfire kernel timer to remove regs arg.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Fri, 9 Feb 2007 18:25:38 +0000 (10:25 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  ieee1394: fix host device registering when nodemgr disabled
  ieee1394: video1394: DMA fix
  ieee1394: raw1394: prevent unloading of low-level driver
  ieee1394: dv1394: tidy up card removal
  ieee1394: dv1394: fix CardBus card ejection
  ieee1394: sbp2: lower block queue alignment requirement
  ieee1394: sbp2: remove bogus "emulated" host flag
  ieee1394: save one word in struct hpsb_host
  ieee1394: restore config ROM when resuming
  ieee1394: ohci1394: drop pcmcia-cs compatibility code
  ieee1394: nodemgr: check info_length in ROM header earlier
  the scheduled IEEE1394_OUI_DB removal
  the scheduled IEEE1394_EXPORT_FULL_API removal
  ieee1394: sbp2: use a better wildcard for blacklist
  Add PCI class ID for firewire OHCI controllers.
  ieee1394: modified csr1212_key_id_type_map to support lisight

17 years ago[PATCH] kbuild: more Makefile cleanups
Roman Zippel [Thu, 8 Feb 2007 21:48:51 +0000 (22:48 +0100)]
[PATCH] kbuild: more Makefile cleanups

This adds the remaining changes which should have been part of the
review process.

 - the define command is inappropriate (it's primarily for rule
   definitions)
 - execute commands in the current dir as all other commands
 - .*.tmp (but not .*.null) files are also removed up by "make clean"
 - printf has other side effects, just use "echo -e"
 - proper quoting
 - proper indentation

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm
Linus Torvalds [Fri, 9 Feb 2007 17:44:28 +0000 (09:44 -0800)]
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm:
  [APM] SH: Convert to use shared APM emulation.
  [APM] MIPS: Convert to use shared APM emulation.
  [APM] ARM: Convert to use shared APM emulation.
  [APM] Add shared version of APM emulation

17 years ago[PATCH] SH vdso: use install_special_mapping()
Paul Mundt [Thu, 8 Feb 2007 22:20:44 +0000 (14:20 -0800)]
[PATCH] SH vdso: use install_special_mapping()

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] powerpc vDSO: use install_special_mapping
Roland McGrath [Thu, 8 Feb 2007 22:20:43 +0000 (14:20 -0800)]
[PATCH] powerpc vDSO: use install_special_mapping

This patch uses install_special_mapping for the powerpc vDSO setup,
consolidating duplicated code.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] x86_64 ia32 vDSO: use install_special_mapping
Roland McGrath [Thu, 8 Feb 2007 22:20:43 +0000 (14:20 -0800)]
[PATCH] x86_64 ia32 vDSO: use install_special_mapping

This patch uses install_special_mapping for the ia32 vDSO setup, consolidating
duplicated code.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] i386 vDSO: use install_special_mapping
Roland McGrath [Thu, 8 Feb 2007 22:20:42 +0000 (14:20 -0800)]
[PATCH] i386 vDSO: use install_special_mapping

This patch uses install_special_mapping for the i386 vDSO setup, consolidating
duplicated code.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] Add install_special_mapping
Roland McGrath [Thu, 8 Feb 2007 22:20:41 +0000 (14:20 -0800)]
[PATCH] Add install_special_mapping

This patch adds a utility function install_special_mapping, for creating a
special vma using a fixed set of preallocated pages as backing, such as for a
vDSO.  This consolidates some nearly identical code used for vDSO mapping
reimplemented for different architectures.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] mm: show bounce pages in oom killer output
Andrew Morton [Thu, 8 Feb 2007 22:20:40 +0000 (14:20 -0800)]
[PATCH] mm: show bounce pages in oom killer output

Also split that long line up - people like to send us wordwrapped oom-kill
traces.

Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] enable mouse button 2+3 emulation for x86 macs
Soeren Sonnenburg [Thu, 8 Feb 2007 22:20:38 +0000 (14:20 -0800)]
[PATCH] enable mouse button 2+3 emulation for x86 macs

As macbook/macbook pro's also have to live with a single mouse button the
following patch just enables the Macintosh device drivers menu in Kconfig +
adds the macintosh dir to the obj-* to make macbook* users happy (who use
exactly that since months....

Signed-off-by: Soeren Sonnenburg <kernel@nn7.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
17 years ago[PATCH] v9fs_vfs_mkdir(): fix a double free
Adrian Bunk [Thu, 8 Feb 2007 22:20:38 +0000 (14:20 -0800)]
[PATCH] v9fs_vfs_mkdir(): fix a double free

Fix a double free of "dfid" introduced by commit
da977b2c7eb4d6312f063a7b486f2aad99809710 and spotted by the Coverity
checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>