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path: root/drivers/block/cciss_cmd.h
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* cciss: use new doorbell-bit-5 reset methodStephen M. Cameron2011-05-06
| | | | | | | | | | | 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 <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* cciss: get rid of message related magic numbersStephen M. Cameron2011-05-06
| | | | | Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* cciss: do a better job of detecting controller reset failureStephen M. Cameron2011-05-06
| | | | | | | | | | | | 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 <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* cciss: Inform controller we are using 32-bit tags.Stephen M. Cameron2011-03-12
| | | | | | | | 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 <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* cciss: reinstate proper FIFO order of command queue listJens Axboe2011-01-10
| | | | | | | | 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 <jaxboe@fusionio.com>
* cciss: fix hard reset code.Stephen M. Cameron2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* cciss: change pad value from 32 to 0Mike Miller2010-08-07
| | | | | | | | | | Change the command padding on 32-bit systems to 0 since setting it to 32 has the identical effect. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* cciss: add performant mode support for Stars/SiriusMike Miller2010-08-07
| | | | | | | | | | | | | | | | | | | | | 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 <mike.miller@hp.com> Cc: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* cciss: detect bad alignment of scsi commands at build timeStephen M. Cameron2010-02-28
| | | | | | | | cciss: detect bad alignment of scsi commands at build time Incidentally fix some nearby c++ style comments. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: clarify command list padding calculationStephen M. Cameron2010-02-28
| | | | | | | cciss: clarify command list padding calculation Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: Consolidate duplicate bits in cciss_cmd.h & cciss_ioctl.hdann frazier2010-02-22
| | | | | | | | | | | 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 <scameron@beardog.cce.hp.com> Signed-off-by: dann frazier <dannf@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: remove C99-style commentsdann frazier2010-02-22
| | | | | | | | | Some cleanup before the header file split-out so we don't propagate this style into new files. Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: dann frazier <dannf@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-12-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * '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 ...
| * tree-wide: fix misspelling of "definition" in commentsAdam Buchbinder2009-12-04
| | | | | | | | | | | | | | | | "Definition" is misspelled "defintion" in several comments; this patch fixes them. No code changes. Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | cciss: Add enhanced scatter-gather support.Don Brace2009-11-13
|/ | | | | | | | | | 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 <brace@beardog.cce.hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: Ignore stale commands after rebootHannes Reinecke2009-07-03
| | | | | | | | | | | | | | | | | | 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 <hare@suse.de> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Jens Axboe <axboe@carl.(none)>
* cciss: simplify interface of sendcmd() and sendcmd_withirq()scameron@beardog.cca.cpqcorp.net2009-06-08
| | | | | | | | 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 <scameron@beardog.cca.cpqcorp.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* cciss: kernel scan thread for MSA2012Mike Miller2009-04-07
| | | | | | | | | | | | | | | 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>
* cciss: switch to using hlist for command list managementJens Axboe2008-12-29
| | | | | | | | | 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>
* [PATCH] cciss: add support for 1024 logical volumesMike Miller2006-12-07
| | | | | | | | | | 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 <mike.miller@hp.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: disable DMA prefetch on P600Mike Miller2006-12-07
| | | | | | | | | | 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 <mike.miller@hp.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: support for >2TB logical volumesMike Miller (OS Dev)2006-10-01
| | | | | | | | | | Add support for logical volumes >2TB. All SAS/SATA controllers support large volumes. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cciss: direct lookup for command completionsMike Miller2005-09-13
| | | | | | | | | | | | | 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 <dab@hp.com> Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
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!
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