06 May, 2011
3 commits
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The bit-2-doorbell reset method seemed to cause (survivable) NMIs
on some systems and (unsurvivable) IOCK NMIs on some G7 servers.
Firmware guys implemented a new doorbell method to alleviate these
problems triggered by bit 5 of the doorbell register. We want to
use it if it's available.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Detect failure of controller reset by noticing if the 32 bytes of
"driver version" we store on the hardware in the config table
fail to get zeroed out. Previously we noticed if the controller
did not transition to "simple mode", but this did not detect reset
failure if the controller was already in simple mode prior to
the reset attempt (e.g. due to module parameter hpsa_simple_mode=1).Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
12 Mar, 2011
1 commit
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Controller will DMA only 32-bits of the tag per command
on completion if it knows we are only using 32-bit tags.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
11 Jan, 2011
1 commit
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Commit 8a3173de inadvertently changed the ordering when
switching to hlists. Change to regular list heads so we
can use tail list adds, this improves performance.Signed-off-by: Jens Axboe
08 Aug, 2010
3 commits
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cciss: Fix hard reset code.
Smart Array controllers newer than the P600 do not honor the
PCI power state method of resetting the controllers. Instead,
in these cases we can get them to reset via the "doorbell" register.This escaped notice until we began using "performant" mode because
the fact that the controllers did not reset did not normally
impede subsequent operation, and so things generally appeared to
"work". Once the performant mode code was added, if the controller
does not reset, it remains in performant mode. The code immediately
after the reset presumes the controller is in "simple" mode
(which previously, it had remained in simple mode the whole time).
If the controller remains in performant mode any code which presumes
it is in simple mode will not work. So the reset needs to be fixed.Unfortunately there are some controllers which cannot be reset by
either method. (eg. p800). We detect these cases by noticing that
the controller seems to remain in performant mode even after a
reset has been attempted. In those cases we ignore the controller,
as any commands outstanding on it will result in stale completions.
To sum up, we try to do a better job of resetting the controller if
"reset_devices" is set, and if it doesn't work, we ignore that
controller.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Change the command padding on 32-bit systems to 0 since setting it to 32
has the identical effect.Signed-off-by: Mike Miller
Cc: Stephen M. Cameron
Signed-off-by: Andrew Morton
Signed-off-by: Jens Axboe -
Add a mode of controller operation called Performant Mode. Even though
cciss has been deprecated in favor of hpsa there are new controllers due
out next year that HP must support in older vendor distros. Vendors
require all fixes/features be upstream. These new controllers support
only 16 commands in simple mode but support up to 1024 in performant mode.
This requires us to add this support at this late date.The performant mode transport minimizes host PCI accesses by performinf
many completions per read. PCI writes are posted so the host can write
then immediately get off the bus not waiting for the writwe to complete to
the target. In the context of performant mode the host read out to a
controller pulls all posted writes into host memory ensuring the reply
queue is coherent.Signed-off-by: Mike Miller
Cc: Stephen M. Cameron
Signed-off-by: Andrew Morton
Signed-off-by: Jens Axboe
01 Mar, 2010
2 commits
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cciss: detect bad alignment of scsi commands at build time
Incidentally fix some nearby c++ style comments.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
cciss: clarify command list padding calculation
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
22 Feb, 2010
2 commits
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There are several duplicate definitions in cciss_cmd.h and cciss_ioctl.h.
Consolidate these into the new cciss_defs.h file. This patch doesn't change
the definitions exposed under include/linux, so userspace apps shouldn't
be affected.Acked-by: Stephen M. Cameron
Signed-off-by: dann frazier
Signed-off-by: Jens Axboe -
Some cleanup before the header file split-out so we don't propagate this style
into new files.Acked-by: Stephen M. Cameron
Signed-off-by: dann frazier
Signed-off-by: Jens Axboe
10 Dec, 2009
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (42 commits)
tree-wide: fix misspelling of "definition" in comments
reiserfs: fix misspelling of "journaled"
doc: Fix a typo in slub.txt.
inotify: remove superfluous return code check
hdlc: spelling fix in find_pvc() comment
doc: fix regulator docs cut-and-pasteism
mtd: Fix comment in Kconfig
doc: Fix IRQ chip docs
tree-wide: fix assorted typos all over the place
drivers/ata/libata-sff.c: comment spelling fixes
fix typos/grammos in Documentation/edac.txt
sysctl: add missing comments
fs/debugfs/inode.c: fix comment typos
sgivwfb: Make use of ARRAY_SIZE.
sky2: fix sky2_link_down copy/paste comment error
tree-wide: fix typos "couter" -> "counter"
tree-wide: fix typos "offest" -> "offset"
fix kerneldoc for set_irq_msi()
spidev: fix double "of of" in comment
comment typo fix: sybsystem -> subsystem
...
05 Dec, 2009
1 commit
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"Definition" is misspelled "defintion" in several comments; this
patch fixes them. No code changes.Signed-off-by: Adam Buchbinder
Signed-off-by: Jiri Kosina
13 Nov, 2009
1 commit
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cciss: Add enhanced scatter-gather support. For controllers which
supported, more than 512 scatter-gather elements per command may
be used, and the max transfer size can be increased to 8192 blocks.Signed-off-by: Don Brace
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
04 Jul, 2009
1 commit
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When doing an unexpected shutdown like kexec the cciss
firmware might still have some commands in flight, which
it is trying to complete.
The driver is doing it's best on resetting the HBA,
but sadly there's a firmware issue causing the firmware
_not_ to abort or drop old commands.
So the firmware will send us commands which we haven't
accounted for, causing the driver to panic.With this patch we're just ignoring these commands as
there is nothing we could be doing with them anyway.Signed-off-by: Hannes Reinecke
Acked-by: Mike Miller
Signed-off-by: Jens Axboe
09 Jun, 2009
1 commit
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Simplify interfaces of sendcmd() and sendcmd_withirq() so that they
provide only one way to address commands instead of three ways.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
07 Apr, 2009
1 commit
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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
Cc: James Bottomley
Signed-off-by: Andrew Morton
Signed-off-by: Jens Axboe
29 Dec, 2008
1 commit
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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
Signed-off-by: Jens Axboe
08 Dec, 2006
2 commits
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Add the support for a large number of logical volumes. We will soon have
hardware that support up to 1024 logical volumes.Signed-off-by: Mike Miller
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Unconditionally disable DMA prefetch on the P600 controller. An ASIC bug may
result in prefetching beyond the end of physical memory.Signed-off-by: Mike Miller
Acked-by: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Oct, 2006
1 commit
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Add support for logical volumes >2TB. All SAS/SATA controllers support
large volumes.Signed-off-by: Mike Miller
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Sep, 2005
1 commit
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This patch changes the way we complete commands. In the old method when we
got a completion we searched our command list from the top until we find it.This method uses a tag associated with each command (not SCSI command tagging)
to index us directly to the completed command. This helps performance.Signed-off-by: Don Brace
Signed-off-by: Mike Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Apr, 2005
1 commit
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.Let it rip!
