Commit Graph

69 Commits

Author SHA1 Message Date
Stephen M. Cameron 36ed2176fe [SCSI] hpsa: disable doorbell reset on reset_devices
The doorbell reset initially appears to work correctly,
the controller resets, comes up, some i/o can even be
done, but on at least some Smart Arrays in some servers,
it eventually causes a subsequent controller lockup due
to some kind of PCIe error, and kdump can end up leaving
the root filesystem in an unbootable state.  For this
reason, until the problem is fixed, or at least isolated
to certain hardware enough to be avoided, the doorbell
reset should not be used at all.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-02 17:14:44 -03:00
Stephen M. Cameron cba3d38b6c [SCSI] hpsa: sanitize max commands
Some controllers might try to tell us they support 0 commands
in performant mode.  This is a lie told by buggy firmware.
We have to be wary of this lest we try to allocate a negative
number of command blocks, which will be treated as unsigned,
and get an out of memory condition.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:02:03 -05:00
Stephen M. Cameron 10f6601808 [SCSI] hpsa: separate intx and msi/msix interrupt handlers
There are things which need to be done in the intx
interrupt handler which do not need to be done in
the msi/msix interrupt handler, like checking that
the interrupt is actually for us, and checking that the
interrupt pending bit on the hardware is set (which we
weren't previously doing at all, which means old controllers
wouldn't work), so it makes sense to separate these into
two functions.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:02:03 -05:00
Stephen M. Cameron 1886765906 [SCSI] hpsa: forbid hard reset of 640x boards
The 6402/6404 are two PCI devices -- two Smart Array controllers
-- that fit into one slot.  It is possible to reset them independently,
however, they share a battery backed cache module.  One of the pair
controls the cache and the 2nd one access the cache through the first
one.  If you reset the one controlling the cache, the other one will
not be a happy camper.  So we just forbid resetting this conjoined
mess.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:02:02 -05:00
Stephen M. Cameron 1df8552abf [SCSI] hpsa: 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 case, we proceed anyway,
as if the reset has happened (and skip the step of waiting for
the controller to become ready -- which is expecting it to be in
"simple" mode.)  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 print a message and try to continue anyway.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:02:00 -05:00
Stephen M. Cameron 4c2a8c40d8 [SCSI] hpsa: factor out the code to reset controllers on driver load
for kdump support

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:02:00 -05:00
Stephen M. Cameron a51fd47f1b [SCSI] hpsa: factor out hpsa_find_cfg_addrs.
Rationale for this is that I will also need to use this code
in fixing kdump host reset code prior to having the hba structure.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:58 -05:00
Stephen M. Cameron 12d2cd4711 [SCSI] hpsa: make hpsa_find_memory_BAR not require the per HBA structure.
Rationale for this is that in order to fix the hard reset code used
by kdump, we need to use this function before we even have the per
HBA structure.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:57 -05:00
Stephen M. Cameron 6798cc0a49 [SCSI] hpsa: Make "hpsa_allow_any=1" boot param enable Compaq Smart Arrays.
We were previously only accepting HP boards.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:55 -05:00
Stephen M. Cameron 2e931f3176 [SCSI] hpsa: add new controllers
Add 5 CCISSE smart array controllers

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:54 -05:00
Stephen M. Cameron def342bd74 [SCSI] hpsa: fix block fetch table problem.
We have 32 (MAXSGENTRIES) scatter gather elements embedded
in the command.  With all these, the total command size is
about 576 bytes.  However, the last entry in the block fetch table
is 35.  (the block fetch table contains the number of 16-byte chunks
the firmware needs to fetch for a given number of scatter gather
elements.)  35 * 16 = 560 bytes, which isn't enough.  It needs to be
36. (36 * 16 == 576) or, MAXSGENTRIES + 4.  (plus 4 because there's a
bunch of stuff at the front of the command before the first scatter
gather element that takes up 4 * 16 bytes.)  Without this fix, the
controller may have to perform two DMA operations to fetch the
command since the first one may not get the whole thing.

Signed-off-by: Don Brace <brace@beardog.cce.hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:17 -05:00
Stephen M. Cameron d28ce020fb [SCSI] hpsa: expose controller firmware revision via /sys.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:17 -05:00
Stephen M. Cameron 873f339fc5 [SCSI] hpsa: remove unused firm_ver member of the per-hba structure
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:15 -05:00
Stephen M. Cameron 6c311b5725 [SCSI] hpsa: factor out hpsa_enter_performant_mode
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:14 -05:00
Stephen M. Cameron ec18d2abad [SCSI] hpsa: remove unused variable trans_offset
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:14 -05:00
Stephen M. Cameron 3f4336f333 [SCSI] hpsa: factor out hpsa_wait_for_mode_change_ack
Signed-off-by:  Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:13 -05:00
Stephen M. Cameron 7136f9a78e [SCSI] hpsa: mark hpsa_mark_hpsa_put_ctlr_into_performant_mode as __devinit
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:12 -05:00
Stephen M. Cameron 58f8665cc3 [SCSI] hpsa: clean up debug ifdefs
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:12 -05:00
Stephen M. Cameron cda7612d4b [SCSI] hpsa: check that simple mode is supported
before trying to enter simple mode transport method.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:11 -05:00
Stephen M. Cameron eb6b2ae905 [SCSI] hpsa: factor out hpsa_enter_simple_mode
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:10 -05:00
Stephen M. Cameron 3d0eab67cf [SCSI] hpsa: factor out hpsa_p600_dma_prefetch_quirk
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:10 -05:00
Stephen M. Cameron f7c391015a [SCSI] hpsa: factor out hpsa_enable_scsi_prefetch
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:09 -05:00
Stephen M. Cameron 76c46e4970 [SCSI] hpsa: factor out hpsa-CISS-signature-present
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:08 -05:00
Stephen M. Cameron b93d7536ea [SCSI] hpsa: hpsa factor out hpsa_find_board_params
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:08 -05:00
Stephen M. Cameron 204892e971 [SCSI] hpsa: fix leak of ioremapped memory in hpsa_pci_init error path.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:07 -05:00
Stephen M. Cameron 77c4495c17 [SCSI] hpsa: factor out hpsa_find_cfgtables
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:07 -05:00
Stephen M. Cameron 2c4c8c8b66 [SCSI] hpsa: factor out hpsa_wait_for_board_ready
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:06 -05:00
Stephen M. Cameron 3a7774ceb8 [SCSI] hpsa: factor out hpsa_find_memory_BAR
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:05 -05:00
Stephen M. Cameron 6b3f4c52b2 [SCSI] hpsa: remove redundant board_id parameter from hpsa_interrupt_mode
and delete duplicated comment

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:04 -05:00
Stephen M. Cameron 85bdbabbd9 [SCSI] hpsa: factor out hpsa_board_disabled
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:03 -05:00
Stephen M. Cameron e5c880d1d5 [SCSI] hpsa: factor out hpsa_lookup_board_id
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:03 -05:00
Stephen M. Cameron 55c06c7171 [SCSI] hpsa: save pdev pointer in per hba structure early to avoid passing it around so much.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:01:02 -05:00
Mike Miller 859e816704 [SCSI] hpsa: remove unneeded defines
This patch removes unnecessary #define's from hpsa. The SCSI midlayer
handles all this for us.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-02 11:02:17 -04:00
Stephen M. Cameron 33a2ffce51 [SCSI] hpsa: Increase the number of scatter gather elements supported.
This uses the scatter-gather chaining feature of Smart Array
controllers.  32 scatter-gather elements are embedded in the
"command list", and the last element in the list may be marked
as a "chain pointer", and point to an additional block of
scatter gather elements.  The precise number of scatter gather
elements supported is dependent on the particular kind of
Smart Array, and is determined at runtime by querying the
hardware.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:37:22 +05:30
Stephen M. Cameron ff9fea9454 [SCSI] hpsa: mark hpsa_pci_init as __devinit
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:58 +05:30
Mike Miller 31468401cc [SCSI] hpsa: remove scan thread
The intent of the scan thread was to allow a UNIT ATTENTION/LUN
DATA CHANGED condition encountered in the interrupt handler
to trigger a rescan of devices, which can't be done in interrupt
context.  However, we weren't able to get this to work, due to
multiple such UNIT ATTENTION conditions arriving during the rescan,
during updating of the SCSI mid layer, etc.  There's no way to tell
the devices, "stand still while I scan you!"  Since it doesn't work,
there's no point in having the thread, as the rescan triggered via
ioctl or sysfs can be done without such a thread.

Signed-off-by: Mike Miller <mikem@beardog.cce.hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:48 +05:30
Stephen M. Cameron e9ea04a65a [SCSI] hpsa: return -ENOMEM, not -1
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:18 +05:30
Stephen M. Cameron 5512672f75 [SCSI] hpsa: fix scsi status mis-shift
The SCSI status does not need to be shifted.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:36:04 +05:30
Stephen M. Cameron f0edafc662 [SCSI] hpsa: fix firmwart typo
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:35:50 +05:30
Stephen M. Cameron 667e23d4e9 [SCSI] hpsa: allow modifying device queue depth.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 18:35:40 +05:30
Stephen M. Cameron 4b5aa7cff0 [SCSI] hpsa: update driver version to 2.0.1-3
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:24:14 -06:00
Stephen M. Cameron 71fe75a705 [SCSI] hpsa: Reorder compat ioctl functions to eliminate some forward declarations.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:24:02 -06:00
Stephen M. Cameron e39eeaed1f [SCSI] hpsa: eliminate lock_kernel in compat_ioctl
The use of the big kernel lock here  appears
to be ancient cruft that is no longer needed.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:23:40 -06:00
Stephen M. Cameron 2a8ccf3187 [SCSI] hpsa: fix bug in adjust_hpsa_scsi_table
fix bug in adjust_hpsa_scsi_table which caused devices which have
changed size, etc. to do the wrong thing.

The problem was as follows:

The driver maintains its current idea of what devices are present
in the h->dev[] array.  When it updates this array, it scans the
hardware, and produces a new list of devices, call it sd[], for
scsi devices.

Then, it compares each item in h->dev[] vs. sd[], and any items which
are not present sd it removes from h->dev[], and any items present
in sd[], but different, it modifies in h->dev[].

Then, it looks for items in sd[] which are not present in h->dev[],
and adds those items into h->dev[].  All the while, it keeps track
of what items were added and removed to/from h->dev[].

Finally, it updates the SCSI mid-layer by removing and adding
the same devices it removed and added to/from h->dev[]. (modified
devices count as a remove then add.)

originally, when a "changed" device was discovered, it was
removed then added to h->dev[].  The item was added to the *end*
of h->dev[].  And, the item was removed from sd[] as well
(nulled out).  As it processed h->dev[], these newly added items
at the end of the list were encountered, and sd[] was searched,
but those items were nulled out.  So they ended up getting removed
immediately after they were added.

The solution is to have a way to replace items in the h->dev[]
array instead of doing a remove + add.  Then the "changed" items.
are not encountered a second time, and removed.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:23:18 -06:00
Stephen M. Cameron 2323104830 [SCSI] hpsa: Fix hpsa_find_scsi_entry so that it doesn't try to dereference NULL pointers
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:23:03 -06:00
Stephen M. Cameron c7f172dca2 [SCSI] hpsa: clarify obscure comment in adjust_hpsa_scsi_table
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:22:51 -06:00
Mike Miller 807be732f9 [SCSI] hpsa: print all the bytes of the CDB, not just the first one.
Signed-off-by: Mike Miller <mikem@beardog.cce.hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:22:40 -06:00
Stephen M. Cameron d416b0c75f [SCSI] hpsa: when resetting devices, print out which device
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:22:29 -06:00
Stephen M. Cameron a08a8471b7 [SCSI] hpsa: use scan_start and scan_finished entry points for scanning
use scan_start and scan_finished entry points for scanning and route
the CCISS_REGNEWD ioctl and sysfs triggering of same functionality
through hpsa_scan_start.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:22:16 -06:00
Stephen M. Cameron a23513e841 [SCSI] hpsa: Add an shost_to_hba helper function.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-02-17 13:22:01 -06:00