Commit graph

150 commits

Author SHA1 Message Date
Yang Hongyang
e930438c42 Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n)
This is the second go through of the old DMA_nBIT_MASK macro,and there're not
so many of them left,so I put them into one patch.I hope this is the last round.
After this the definition of the old DMA_nBIT_MASK macro could be removed.

Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Greg KH <greg@kroah.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13 15:04:33 -07:00
Linus Torvalds
6a5d263866 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  loop: mutex already unlocked in loop_clr_fd()
  cfq-iosched: don't let idling interfere with plugging
  block: remove unused REQ_UNPLUG
  cfq-iosched: kill two unused cfqq flags
  cfq-iosched: change dispatch logic to deal with single requests at the time
  mflash: initial support
  cciss: change to discover first memory BAR
  cciss: kernel scan thread for MSA2012
  cciss: fix residual count for block pc requests
  block: fix inconsistency in I/O stat accounting code
  block: elevator quiescing helpers
2009-04-07 11:06:41 -07:00
Yang Hongyang
284901a90a dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)
Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:11 -07:00
Yang Hongyang
6a35528a83 dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)
Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:10 -07:00
Mike Miller
e143858104 cciss: change to discover first memory BAR
Add a method for discovering the first memory BAR.  All Smart Array
controllers to date have always had the the memory BAR as the first BAR.
A new controller to be released later this year breaks that model.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-07 08:12:38 +02:00
Mike Miller
0a9279cc7c cciss: kernel scan thread for MSA2012
The MSA2012 cannot inform the driver of configuration changes since all
management is out of band.  This is a departure from any storage we have
supported in the past.  We need some way to detect changes on the topology
so we implement this kernel thread.  In some instances there's nothing we
can do from the driver (like LUN failure) so just print out a message.  In
the case where logical volumes are added or deleted we call
rebuild_lun_table to refresh the driver's view of the world.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-07 08:12:38 +02:00
Jens Axboe
ac44e5b2ed cciss: fix residual count for block pc requests
We must complete the full request, so store the request count and then set
the ->data_len to the residual count from the hardware.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-07 08:12:38 +02:00
Jens Axboe
10cbda97e7 cciss: add BUILD_BUG_ON() for catching bad CommandList_struct alignment
The hardware requires 64-bit alignment of commands, so add a build bug
check for that. The recent commit 8a3173de4a
didn't change the size of the command, but other additions/changes may and
thus break badly at runtime.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-03-24 12:35:16 +01:00
Jens Axboe
5e18cfd04f cciss: remove 30 second initial timeout on controller reset
Commit 5e4c91c84b forgot to remove the
initial sleep, get rid of it.

Thanks to Randy Dunlap <randy.dunlap@oracle.com> for spotting this error.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-03-05 12:04:57 +01:00
Jens Axboe
5e4c91c84b cciss: shorten 30s timeout on controller reset
If reset_devices is set for kexec, then cciss will delay 30 seconds
since the old 5i controller _may_ need that long to recover. Replace
the long sleep with incremental sleep and tests to reduce the 30 seconds
to worst case for 5i, so that other controllers will proceed quickly.

Reviewed-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-02-26 10:45:48 +01:00
Chip Coldwell
82eb03cfd8 cciss: PCI power management reset for kexec
The kexec kernel resets the CCISS hardware in three steps:

1. Use PCI power management states to reset the controller in the
   kexec kernel.

2. Clear the MSI/MSI-X bits in PCI configuration space so that MSI
   initialization in the kexec kernel doesn't fail.

3. Use the CCISS "No-op" message to determine when the controller
   firmware has recovered from the PCI PM reset.

[akpm@linux-foundation.org: cleanups]
Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-02-18 10:32:01 +01:00
Stephen M. Cameron
a0ea862291 cciss: simplify parameters to deregister_disk function
Simplify parameters to deregister_disk function.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-12-29 08:29:52 +01:00
Jens Axboe
8a3173de4a cciss: switch to using hlist for command list management
This both cleans up the code and also helps detect the spurious case
of a command attempted being removed from a queue it doesn't belong
to.

Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-12-29 08:28:43 +01:00
Stephen M. Cameron
d8a0be6ab7 cciss: fix problem that deleting multiple logical drives could cause a panic
Fix problem that deleting multiple logical drives could cause a panic.

It fixes a panic which can be easily reproduced in the following way: Just
create several "arrays," each with multiple logical drives via hpacucli,
then delete the first array, and it will blow up in deregister_disk(), in
the call to get_host() when it tries to dig the hba pointer out of a NULL
queue pointer.

The problem has been present since my code to make rebuild_lun_table
behave better went in.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-12-19 08:14:07 +01:00
Randy Dunlap
9f92f47197 cciss: fix DEBUG printk formats
Fix printk format warnings when CCISS_DEBUG is defined.

drivers/block/cciss.c:2856: warning: format '%d' expects type 'int', but argument 2 has type 'long unsigned int'
drivers/block/cciss.c:3205: warning: format '%x' expects type 'unsigned int', but argument 2 has type 'long unsigned int'
drivers/block/cciss.c:3236: warning: format '%x' expects type 'unsigned int', but argument 2 has type '__u64'
drivers/block/cciss.c:3246: warning: format '%x' expects type 'unsigned int', but argument 2 has type '__u64'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-19 18:50:00 -08:00
Mike Miller
22bece00dc cciss: fix regression firmware not displayed in procfs
This regression was introduced by commit
6ae5ce8e8d ("cciss: remove redundant code").

This patch fixes a regression where the controller firmware version is not
displayed in procfs.  The previous patch would be called anytime something
changed.  This will get called only once for each controller.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>		[2.6.27.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06 15:41:18 -08:00
Mike Miller
404443081c cciss: fix sysfs broken symlink regression
Regression introduced by commit 6ae5ce8e8d
("cciss: remove redundant code").

This patch fixes a broken symlink in sysfs that was introduced by the
above commit.  We broke it in 2.6.27-rc on or about 20080804.  Some
installers are broken if this symlink does not exist and they may not
detect the logical drives configured on the controller.  It does not
require being backported into 2.6.26.x or earlier kernels.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>		[2.6.27.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06 15:41:17 -08:00
Mike Miller
77ca7286d1 cciss: new hardware support
Add support for 2 new SAS/SATA controllers.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06 15:41:16 -08:00
Al Viro
ef7822c2fb [PATCH] switch cciss
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21 07:47:46 -04:00
Al Viro
d4430d62fa [PATCH] beginning of methods conversion
To keep the size of changesets sane we split the switch by drivers;
to keep the damn thing bisectable we do the following:
	1) rename the affected methods, add ones with correct
prototypes, make (few) callers handle both.  That's this changeset.
	2) for each driver convert to new methods.  *ALL* drivers
are converted in this series.
	3) kill the old (renamed) methods.

Note that it _is_ a flagday; all in-tree drivers are converted and by the
end of this series no trace of old methods remain.  The only reason why
we do that this way is to keep the damn thing bisectable and allow per-driver
debugging if anything goes wrong.

New methods:
	open(bdev, mode)
	release(disk, mode)
	ioctl(bdev, mode, cmd, arg)		/* Called without BKL */
	compat_ioctl(bdev, mode, cmd, arg)
	locked_ioctl(bdev, mode, cmd, arg)	/* Called with BKL, legacy */

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21 07:47:32 -04:00
Al Viro
74f3c8aff3 [PATCH] switch scsi_cmd_ioctl() to passing fmode_t
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-21 07:47:14 -04:00
Julia Lawall
061837bc86 drivers/block: Use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.

An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

#include <linux/kernel.h>

@depends on haskernel@
expression n,d;
@@

(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-09 08:56:19 +02:00
Mike Miller
ba198efb5e cciss: fix bug if scsi tape support is disabled
Bug fix. If SCSI tape support is turned off we get an implicit declaration
of cciss_unregister_scsi error in cciss_remove_one.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-08-06 12:30:04 +02:00
Mike Miller
eece695f8b cciss: fix negative logical drive count in procfs
This patch fixes a problem where the logical volume count may go negative.
In some instances if several logical are configured on a controller and all
of them are deleted using the online utilities the volume count in /proc may
go negative with no way get it correct again.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-08-06 12:30:03 +02:00
Mike Miller
6ae5ce8e8d cciss: remove redundant code
This patch removes redundant code where ever logical volumes are added or
removed. It adds 3 new functions that are called instead of having the same
code spread throughout the driver. It also removes the cciss_getgeometry
function.
The patch is fairly complex but we haven't figured out how to make it any
simpler and still do everything that needs to be done. Some of the
complexity comes from having to special case booting from cciss. Otherwise
the gendisk doesn't get added in time and the switchroot will fail.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-08-06 12:30:03 +02:00
Mike Miller
a72da29b6c cciss: make rebuild_lun_table behave better
This patch makes the rebuild_lun_table smart enough to not rip a logical
volume out from under the OS. Without this fix if a customer is running
hpacucli to monitor their storage the driver will blindly remove and re-add
the disks whenever the utility calls the CCISS_REGNEWD ioctl. Unfortunately,
both hpacucli and ACUXE call the ioctl repeatedly. Customers have reported
IO coming to a standstill. Calling the ioctl is the problem, this patch is
the fix.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-08-06 12:30:03 +02:00
Nikanth Karthikesan
f7108f91cd cciss: return -EFAULT if copy_from_user() fails
Return -EFAULT instead of -ENOMEM if copy_from_user() fails.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-08-06 12:30:03 +02:00
Hannes Reinecke
756fcab277 block/cciss.c: remove pointless curr_queue calculation
curr_queue is a local variable in a for loop, and it's being initialized
at the start of each loop.  So any assignment at the end of the loop is
pointless.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-05 14:33:46 -07:00
Mike Miller
491539982a cciss: read config to obtain max outstanding commands per controller
This patch changes the way we determine the maximum number of outstanding
commands for each controller.

Most Smart Array controllers can support up to 1024 commands, the notable
exceptions are the E200 and E200i.

The next generation of controllers which were just added support a mode of
operation called Zero Memory Raid (ZMR).  In this mode they only support
64 outstanding commands.  In Full Function Raid (FFR) mode they support
1024.

We have been setting the queue depth by arbitrarily assigning some value
for each controller.  We needed a better way to set the queue depth to
avoid lots of annoying "fifo full" messages.  So we made the driver a
little smarter.  We now read the config table and subtract 4 from the
returned value.  The -4 is to allow some room for ioctl calls which are
not tracked the same way as io commands are tracked.

Please consider this for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04 10:40:09 -07:00
Stephen M. Cameron
77b96bd7e5 cciss: fix regression that no device nodes are created if no logical drives are configured.
Fix regression in cciss driver that if no logical drives are configured,
no device nodes at all get created.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04 10:40:06 -07:00
Mike Miller
24aac480e7 cciss: add new hardware support
Add support for the next generation of HP Smart Array SAS/SATA
controllers.  Shipping date is late Fall 2008.

Bump the driver version to 3.6.20 to reflect the new hardware support from
patch 1 of this set.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-12 18:05:40 -07:00
Denis V. Lunev
3dfcf9c4bf cciss: assign PDE->data before gluing PDE into /proc tree
Simply replace proc_create and further data assigned with proc_create_data.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01 08:04:02 -07:00
Alexey Dobriyan
928b4d8c89 proc: remove proc_root_driver
Use creation by full path: "driver/foo".

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:18 -07:00
scameron@beardog.cca.cpqcorp.net
e14ac67026 cciss: Fix race between disk-adding code and interrupt handler
Fix race condition between cciss_init_one(), cciss_update_drive_info(),
and cciss_check_queues().

Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-04-21 09:50:09 +02:00
Mike Pagano
231bc2a222 cciss: error: implicit declaration of function 'sg_init_table'
This patch adds the missing include directive <linux/scatterlist.h> to the
cciss.c source file.    This was discovered by our release team when building
the kernel for the Alpha architecture.

Errors were found as references to functions 'sg_init_table' and 'sg_page' do
not exist without the include for Alpha.

Signed-off-by: Mike Pagano <mpagano@gentoo.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-11 08:06:44 -07:00
Mike Miller
68d95b585f cciss: remove READ_AHEAD define and use block layer defaults
This patch removes the #define READ_AHEAD 1024 from the driver and uses the
block layer defaults, instead. We have found that under certain workloads
the setting can cause a disk connected to the e200 controller to go offline.
If the disk hiccups the link may try to downshift but the controller is
never notified that the link successfully completed the renegotiation.
We've also found that performance using the block layer default of 32 pages
was on par with the 1024 setting. We tried setting it to zero at one time
based on info from our firmware guys but that killed performance. Turns out
we were talking about 2 different read ahead settings.
Please consider this for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:28:43 +01:00
Mike Miller
89b6e74378 resubmit: cciss: procfs updates to display info about many
volumes

This patch allows us to display information about all of the logical volumes
configured on a particular controller without stepping on memory even when
there are many volumes (128 or more) configured.
Please consider this for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04 11:14:39 +01:00
Randy Dunlap
582539e5a0 cciss: use upper_32_bits() macro to eliminate warnings
Use upper_32_bits(x) macro to handle shifts that may be >= the width of
the data type.

drivers/block/cciss.c: In function 'do_cciss_request':
drivers/block/cciss.c:2655: warning: right shift count >= width of type
drivers/block/cciss.c:2656: warning: right shift count >= width of type
drivers/block/cciss.c:2657: warning: right shift count >= width of type
drivers/block/cciss.c:2658: warning: right shift count >= width of type

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:03 -08:00
Jens Axboe
e7d9dc9cfd cciss: fix bug in overriding ->data_len before completion
For BLOCK_PC requests, we need that length for completing the request.
Andrew Vasquez <andrew.vasquez@qlogic.com> reported the following
oops

Hitting a consistent BUG() with recent Linus' linux-2.6.git:

	[   12.941428] ------------[ cut here ]------------
	[   12.944874] kernel BUG at drivers/block/cciss.c:1260!
	[   12.944874] invalid opcode: 0000 [1] SMP
	[   12.944874] CPU 0
	[   12.944874] Modules linked in:
	[   12.944874] Pid: 0, comm: swapper Not tainted 2.6.24 #43
	[   12.944874] RIP: 0010:[<ffffffff8039e43d>]  [<ffffffff8039e43d>] cciss_softirq_done+0xbc/0x1bf
	[   12.944874] RSP: 0018:ffffffff8063aed0  EFLAGS: 00010202
	[   12.944874] RAX: 0000000000000001 RBX: ffff8100cf800010 RCX: ffff81042f1253b0
	[   12.944874] RDX: ffff81042de398f0 RSI: ffff81042de398f0 RDI: 0000000000000001
	[   12.944874] RBP: ffff81042daa0000 R08: ffff81042f1253b0 R09: 0000000000000001
	[   12.944874] R10: 00000000000000fe R11: 0000000000000000 R12: 0000000000000002
	[   12.944874] R13: 0000000000000001 R14: ffff8100cf800000 R15: ffff81042de398f0
	[   12.944874] FS:  0000000000000000(0000) GS:ffffffff805bb000(0000) knlGS:0000000000000000
	[   12.944874] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
	[   12.944874] CR2: 00002afed7eea340 CR3: 000000042dbba000 CR4: 00000000000006e0
	[   12.944874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
	[   12.944874] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
	[   12.944874] Process swapper (pid: 0, threadinfo ffffffff805f4000, task ffffffff805624a0)
	[   12.944874] Stack:  0000000000000000 ffffffff8063af10 0000000000000001 ffffffff80632d60
	[   12.944874]  0000000000000000 000000000000000a ffffffff805bb900 ffffffff8032038f
	[   12.944874]  ffffffff8063af10 ffffffff8063af10 ffffffff805bb940 ffffffff802346b4
	[   12.944874] Call Trace:
	[   12.944874]  <IRQ>  [<ffffffff8032038f>] blk_done_softirq+0x69/0x78
	[   12.944874]  [<ffffffff802346b4>] __do_softirq+0x6f/0xd8
	[   12.944874]  [<ffffffff8020c45c>] call_softirq+0x1c/0x30
	[   12.944874]  [<ffffffff8020e347>] do_softirq+0x30/0x80
	[   12.944874]  [<ffffffff8020e409>] do_IRQ+0x72/0xd9
	[   12.944874]  [<ffffffff8020a50a>] mwait_idle+0x0/0x46
	[   12.944874]  [<ffffffff8020a3da>] default_idle+0x0/0x3d
	[   12.944874]  [<ffffffff8020b7e1>] ret_from_intr+0x0/0xa
	[   12.944874]  <EOI>  [<ffffffff8020a54c>] mwait_idle+0x42/0x46
	[   12.944874]  [<ffffffff8020a481>] cpu_idle+0x6a/0xae
	[   12.944874]
	[   12.944874]
	[   12.944874] Code: 0f 0b eb fe 48 8d 85 d8 c0 00 00 48 89 04 24 48 89 c7 e8 e5
	[   12.944874] RIP  [<ffffffff8039e43d>] cciss_softirq_done+0xbc/0x1bf
	[   12.944874]  RSP <ffffffff8063aed0>
	[   12.944903] ---[ end trace e9c631603f90d22f ]---

which is caused by blk_end_request() returning 'not done' for a request,
since it gets asked to complete zero bytes.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-29 21:55:18 +01:00
Kiyoshi Ueda
3daeea29f9 blk_end_request: changing cciss (take 4)
This patch converts cciss to use blk_end_request interfaces.
Related 'uptodate' arguments are converted to 'error'.

cciss is a little bit different from "normal" drivers.
cciss directly calls bio_endio() and disk_stat_add()
when completing request.  But those can be replaced with
__end_that_request_first().
After the replacement, request completion procedures of
those drivers become like the following:
    o end_that_request_first()
    o add_disk_randomness()
    o end_that_request_last()
This can be converted to blk_end_request() by following
the rule (a) mentioned in the patch subject
"[PATCH 01/30] blk_end_request: add new request completion interface".

Cc: Mike Miller <mike.miller@hp.com>
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-28 10:36:58 +01:00
Randy Dunlap
7d1fd970e4 cciss: section mismatch
Mark cciss_pci_init() as __devinit, to fix section mismatch warning.

WARNING: vmlinux.o(.text+0x601fc9): Section mismatch: reference to .init.text: (between 'cciss_pci_init' and 'cciss_getgeometry')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <mike.miller@hp.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-14 08:52:22 -08:00
Mike Miller
bd4f36d6da cciss: update copyright notices
This patch updates the copyright information for the cciss driver. It
includes extending the year to 2007 (how timely) and some minor corrections
deemed necessary by HP legal and the Open Source Review Board. Please
consider this patch for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
--------------------------------------------------------------------------------
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-29 11:33:05 +01:00
Jens Axboe
45711f1af6 [SG] Update drivers to use sg helpers
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-22 21:19:53 +02:00
Linus Torvalds
b6257a9036 Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block:
  [SCSI] Remove full sg table memset()
  [SCSI] ide-scsi: remove usage of sg_last()
  Fix loop terminating conditions in fill_sg().
  [BLOCK] Clear sg entry before filling in blk_rq_map_sg()
  IA64: iommu uses sg_next with an invalid sg element
  cciss: disable DMA refetch on Smart Array P600
  swiotlb: fix map_sg failure handling
  SPARC64: fix iommu sg chaining
  [SCSI] ide-scsi: use scsi_sg_count() instead of ->use_sg
2007-10-17 09:08:13 -07:00
Adrian Bunk
5a9df732b6 drivers/block/cciss.c: fix check-after-use
The Coverity checker spotted that we have already oops'ed if "disk"
was NULL.

Since "disk" being NULL seems impossible at this point this patch
removes the NULL check.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:42:55 -07:00
Steve Cameron
1a614f5051 cciss: fix error reporting for SG_IO
This fixes a problem with the way cciss was filling out the "errors" field
of the request structure upon completion of requests.  Previously, it just
put a 1 or a 0 in there and used the negation of this as the uptodate
parameter to one of the functions in the block layer, being a block device.
 For the SG_IO ioctl, this was not sufficient, and we noticed that, for
example, sg_turs from sg3_utils did not correctly detect problems due to
cciss having set rq->errors incorrectly.

Signed-off-by: Stephen M. Cameron <steve.cameron@hp.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17 08:42:55 -07:00
Mike Miller (OS Dev)
8bf50f71cb cciss: disable DMA refetch on Smart Array P600
This patch disables DMA refetch in the PCI bridge. We have disabled DMA
prefetch for quite some time. Testing with XEN revealed another ASIC bug. If
dom0 resides on a P600 the board can can an MCA bi accessing invalid memory
addresses. Apparently, we need to disable both prefetch and refetch.
My understanding is a refetch operation should not occur but it is a valid
thing to do if prefetched data is no longer available for whatever reason.
Please consider this patch for inclusion.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Alex Chiang <achiang@hp.com>

--------------------------------------------------------------------------------
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-17 10:10:04 +02:00
Jens Axboe
3eed13fd93 Merge branch 'sglist-arch' into for-linus 2007-10-16 12:29:34 +02:00
Lee Schermerhorn
a683d652d3 Panic in blk_rq_map_sg() from CCISS driver
New scatter/gather list chaining [sg_next()] treats 'page' member of
struct scatterlist with low bit set [0x01] as a chain pointer to
another struct scatterlist [array].  The CCISS driver request function
passes an uninitialized, temporary, on-stack scatterlist array to
blk_rq_map_sq().  sg_next() interprets random data on the stack as a
chain pointer and eventually tries to de-reference an invalid pointer,
resulting in:

[<ffffffff8031dd70>] blk_rq_map_sg+0x70/0x170
PGD 6090c3067 PUD 0
Oops: 0000 [1] SMP
last sysfs file: /block/cciss!c0d0/cciss!c0d0p1/dev
CPU 6
Modules linked in: ehci_hcd ohci_hcd uhci_hcd
Pid: 1, comm: init Not tainted 2.6.23-rc6-mm1 #3
RIP: 0010:[<ffffffff8031dd70>] [<ffffffff8031dd70>] blk_rq_map_sg+0x70/0x170
RSP: 0018:ffff81060901f768 EFLAGS: 00010206
RAX: 000000040b161000 RBX: ffff81060901f7d8 RCX: 000000040b162c00
RDX: 0000000000000000 RSI: ffff81060b13a260 RDI: ffff81060b139600
RBP: 0000000000001400 R08: 00000000fffffffe R09: 0000000000000400
R10: 0000000000000000 R11: 000000040b163000 R12: ffff810102fe0000
R13: 0000000000000001 R14: 0000000000000001 R15: 00001e0000000000
FS: 00000000026108f0(0063) GS:ffff810409000b80(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 000000010000001e CR3: 00000006090c6000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process init (pid: 1, threadinfo ffff81060901e000, task ffff810409020800)
last branch before last exception/interrupt
from [<ffffffff8031de0a>] blk_rq_map_sg+0x10a/0x170
to [<ffffffff8031dd70>] blk_rq_map_sg+0x70/0x170
Stack: 000000018068ea00 ffff810102fe0000 0000000000000000 ffff810011400000
0000000000000002 0000000000000000 ffff81040b172000 ffffffff803acd3d
0000000000003ec1 ffff8106090d5000 ffff8106090d5000 ffff810102fe0000
Call Trace:
[<ffffffff803acd3d>] do_cciss_request+0x15d/0x4c0
[<ffffffff80298968>] new_slab+0x1c8/0x270
[<ffffffff80298ffd>] __slab_alloc+0x22d/0x470
[<ffffffff8027327b>] mempool_alloc+0x4b/0x130
[<ffffffff8032b21e>] cfq_set_request+0xee/0x380
[<ffffffff8027327b>] mempool_alloc+0x4b/0x130
[<ffffffff8031ff98>] get_request+0x168/0x360
[<ffffffff80331b0d>] rb_insert_color+0x8d/0x110
[<ffffffff8031cfd8>] elv_rb_add+0x58/0x60
[<ffffffff8032a329>] cfq_add_rq_rb+0x69/0xa0
[<ffffffff8031c1ab>] elv_merged_request+0x5b/0x60
[<ffffffff803224fd>] __make_request+0x23d/0x650
[<ffffffff80298ffd>] __slab_alloc+0x22d/0x470
[<ffffffff80270000>] generic_write_checks+0x140/0x190
[<ffffffff8031f012>] generic_make_request+0x1c2/0x3a0
<etc>
Kernel panic - not syncing: Attempted to kill init!

This patch initializes the tmp_sg array to zeroes.  Perhaps not the ultimate
fix, but an effective work-around.  I can now boot 23-rc6-mm1 on an HP
Proliant x86_64 with CCISS boot disk.

Signed-off-by:  Lee Schermerhorn <lee.schermerhorn@hp.com>

 drivers/block/cciss.c |    1 +
 1 file changed, 1 insertion(+)
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-16 11:24:44 +02:00
Jeff Garzik
87ad900164 drivers/block/cpqarray,cciss: kill unused var
The recent bio work and subsequent fixups created unused variables.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-16 09:59:55 +02:00