Commit Graph

409 Commits

Author SHA1 Message Date
Maciej Patelczyk 49bd665c54 [SCSI] isci: copy fis 0x34 response into proper buffer
SATA MICROCODE DOWNALOAD fails on isci driver. After receiving Register
Device to Host (FIS 0x34) frame Initiator resets phy.
In the frame handler routine response (FIS 0x34) was copied into wrong
buffer and upper layer did not receive any answer which resulted in
timeout and reset.
This patch corrects this bug.

Signed-off-by: Maciej Patelczyk <maciej.patelczyk@intel.com>
Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-11-13 13:45:14 +00:00
Linus Torvalds 3151367f87 SCSI for-linus on 20121002
This is a large set of updates, mostly for drivers (qla2xxx [including support
 for new 83xx based card], qla4xxx, mpt2sas, bfa, zfcp, hpsa, be2iscsi, isci,
 lpfc, ipr, ibmvfc, ibmvscsi, megaraid_sas).  There's also a rework for tape
 adding virtually unlimited numbers of tape drives plus a set of dif fixes for
 sd and a fix for a live lock on hot remove of SCSI devices.
 
 This round includes a signed tag pull of isci-for-3.6
 
 Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull first round of SCSI updates from James Bottomley:
 "This is a large set of updates, mostly for drivers (qla2xxx [including
  support for new 83xx based card], qla4xxx, mpt2sas, bfa, zfcp, hpsa,
  be2iscsi, isci, lpfc, ipr, ibmvfc, ibmvscsi, megaraid_sas).

  There's also a rework for tape adding virtually unlimited numbers of
  tape drives plus a set of dif fixes for sd and a fix for a live lock
  on hot remove of SCSI devices.

  This round includes a signed tag pull of isci-for-3.6

  Signed-off-by: James Bottomley <JBottomley@Parallels.com>"

Fix up trivial conflict in drivers/scsi/qla2xxx/qla_nx.c due to new PCI
helper function use in a function that was removed by this pull.

* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (198 commits)
  [SCSI] st: remove st_mutex
  [SCSI] sd: Ensure we correctly disable devices with unknown protection type
  [SCSI] hpsa: gen8plus Smart Array IDs
  [SCSI] qla4xxx: Update driver version to 5.03.00-k1
  [SCSI] qla4xxx: Disable generating pause frames for ISP83XX
  [SCSI] qla4xxx: Fix double clearing of risc_intr for ISP83XX
  [SCSI] qla4xxx: IDC implementation for Loopback
  [SCSI] qla4xxx: update copyrights in LICENSE.qla4xxx
  [SCSI] qla4xxx: Fix panic while rmmod
  [SCSI] qla4xxx: Fail probe_adapter if IRQ allocation fails
  [SCSI] qla4xxx: Prevent MSI/MSI-X falling back to INTx for ISP82XX
  [SCSI] qla4xxx: Update idc reg in case of PCI AER
  [SCSI] qla4xxx: Fix double IDC locking in qla4_8xxx_error_recovery
  [SCSI] qla4xxx: Clear interrupt while unloading driver for ISP83XX
  [SCSI] qla4xxx: Print correct IDC version
  [SCSI] qla4xxx: Added new mbox cmd to pass driver version to FW
  [SCSI] scsi_dh_alua: Enable STPG for unavailable ports
  [SCSI] scsi_remove_target: fix softlockup regression on hot remove
  [SCSI] ibmvscsi: Fix host config length field overflow
  [SCSI] ibmvscsi: Remove backend abstraction
  ...
2012-10-02 19:01:32 -07:00
James Bottomley fe709ed827 Merge SCSI misc branch into isci-for-3.6 tag 2012-10-02 08:55:12 +01:00
Linus Torvalds 99dbb1632f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull the trivial tree from Jiri Kosina:
 "Tiny usual fixes all over the place"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
  doc: fix old config name of kprobetrace
  fs/fs-writeback.c: cleanup riteback_sb_inodes kerneldoc
  btrfs: fix the commment for the action flags in delayed-ref.h
  btrfs: fix trivial typo for the comment of BTRFS_FREE_INO_OBJECTID
  vfs: fix kerneldoc for generic_fh_to_parent()
  treewide: fix comment/printk/variable typos
  ipr: fix small coding style issues
  doc: fix broken utf8 encoding
  nfs: comment fix
  platform/x86: fix asus_laptop.wled_type module parameter
  mfd: printk/comment fixes
  doc: getdelays.c: remember to close() socket on error in create_nl_socket()
  doc: aliasing-test: close fd on write error
  mmc: fix comment typos
  dma: fix comments
  spi: fix comment/printk typos in spi
  Coccinelle: fix typo in memdup_user.cocci
  tmiofb: missing NULL pointer checks
  tools: perf: Fix typo in tools/perf
  tools/testing: fix comment / output typos
  ...
2012-10-01 09:06:36 -07:00
Dave Jiang 44ef2bf72d [SCSI] isci: Fix interrupt coalescing assumption of active TCs
We always assign a dummy task context to a port in order to address a
silicon issue. We have 4 ports per controller. So when idle, there are always
exactly 4 TCs "active". The adaptive interrupt coalescing code uses number of
active TCs to figure out the coalescing values. However, we never hit "0" TCs
because of the 4 dummy TCs. Putting in fix so that we calculate this correctly.

Reported-by: Dan Melnic <dan@seamicro.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-24 12:11:04 +04:00
Jeff Skirvin 54b4667775 [SCSI] isci: Allow SSP tasks into the task management path.
This commit fixes a driver bug for SSP tasks that require task management
in the target after they complete in the SCU hardware.  The problem was
manifested in the function "isci_task_abort_task", which tests
to see if the sas_task.lldd_task is non-NULL before allowing task
management; this bug would always NULL lldd_task in the SCU I/O completion
path even if target management was required, which would prevent
task / target manangement from happening.

Note that in the case of SATA/STP targets, error recovery is provided by
the libata error handler which is why SATA/STP device recovery worked
correctly even though SSP handling did not.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-24 12:11:04 +04:00
James Bottomley 1c4cf1d584 isci update for 3.6
1/ Fix the workaround for drives that have a slow response to COMSAS.
    Drives with this problem intermittently take a long time to be
    identified, or fail to be identified altogether.
 
 2/ A minor fix for the efi variable code failure path
 
 3/ A handful of smatch fixups from Dan Carpenter
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Merge tag 'isci-for-3.6' into for-next

isci update for 3.6

1/ Fix the workaround for drives that have a slow response to COMSAS.
   Drives with this problem intermittently take a long time to be
   identified, or fail to be identified altogether.

2/ A minor fix for the efi variable code failure path

3/ A handful of smatch fixups from Dan Carpenter
2012-09-13 09:26:10 +01:00
Anatol Pomozov 4907cb7b19 treewide: fix comment/printk/variable typos
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-01 10:33:05 -07:00
Masanari Iida 59e13d4833 scsi: fix various printk and comment typos
Correct spelling typo within drivers/scsi

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-01 08:24:35 -07:00
Artur Wojcik e468dc112f [SCSI] isci: implement suspend/resume support
Provide a "simple-dev-pm-ops" implementation that shuts down the domain
and the device on suspend, and resumes the device and the domain on
resume.  All of the mechanics of restoring domain connectivity are
handled by libsas once isci has notified libsas that all links should be
back up.  libsas is in charge of handling links that did not resume, or
resumed out of order.

Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
Signed-off-by: Jacek Danecki <jacek.danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-08-24 13:10:24 +04:00
Dan Williams 4e646ddd5f [SCSI] isci: use sas eh strategy handlers
...now that the strategy handlers guarantee eh context and notify
the driver of bus reset.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-07-20 08:58:51 +01:00
Dan Carpenter 6734092e66 isci: add a couple __iomem annotations
These are __iomem.  Sparse complains if we don't have that.

drivers/scsi/isci/phy.c +149 70: warning:
        incorrect type in initializer (different address spaces)

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-07-03 12:09:32 -07:00
Dan Carpenter 67787c3307 isci: make function declaration match implementation
Sparse complains that we redeclare this with a different type, because
in the .c file we use an enum and in the .h file we declare the
parameter as a u32.  Probably it's best to use an enum in both places.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-07-03 12:09:31 -07:00
Dave Maurer a900375605 isci: fix COMSAS negation timout workaround for WD SAS drives
The following patch is a fix for the WD workaround
COMSAS negation timeout change. This patch disables the
OOB SM when the OOB is placed in reset, which allows
the updated COMSAS negation timeout value to take
effect.

Cc: Dan Thompson <daniel.j.thompson@intel.com>
Reported-by: Dan Thompson <daniel.j.thompson@intel.com>
Signed-off-by: Dave Maurer <david.c.maurer@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-07-03 12:09:30 -07:00
Dan Williams 6d70a74ffd isci: fix isci_pci_probe() generates warning on efi failure path
The oem parameter image embedded in the efi variable is at an offset
from the start of the variable.  However, in the failure path we try to
free the 'orom' pointer which is only valid when the paramaters are
being read from the legacy option-rom space.

Since failure to load the oem parameters is unlikely and we keep the
memory around in the success case just defer all de-allocation to devm.

Cc: <stable@vger.kernel.org>
Reported-by: Don Morris <don.morris@hp.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-07-03 12:09:30 -07:00
Jeff Skirvin de2eb4d5c5 isci: End the RNC resumption wait when the RNC is destroyed.
While the RNC is suspended for I/O cleanup, the remote device can be
stopped and the RNC setup for destruction.  These changes accomodate that
case in the abort path.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:44 -07:00
Jeff Skirvin 6c6aacbb77 isci: Fixed RNC bug that lost the suspension or resumption during destroy
This fix corrects the saving of resume parameters when the destruction
of the RNC has already been directed, and makes sure not to overwrite
the RNC destruction callbacks.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:44 -07:00
Jeff Skirvin 79cbab89ff isci: Fix RNC AWAIT_SUSPENSION->INVALIDATING transition.
The RNC state machine would incorrectly transition from
SCI_RNC_AWAIT_SUSPENSION directly to SCI_RNC_INVALIDATING when a destruct
request was made.  This would skip the increment of the suspension count
and the abort of pending TCs (although the invalidating state would at
least cleanup outstanding TCs).

Instead, the RNC will transition to SCI_RNC_SUSPENDED and then start the
destruction process.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:44 -07:00
Jeff Skirvin 3ef768c6c0 isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock.
Since there is a possibilty of a timeout waiting for the RNC suspension,
handle the exit case from the task termination under scic_lock, and leave
the tag allocated if the termination timed-out.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:44 -07:00
Jeff Skirvin f8381807eb isci: Remove obviated host callback list.
Since the callbacks to libsas now occur under scic_lock, there is no
longer any reason to save the completed requests in a separate list
for completion to libsas.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:44 -07:00
Jeff Skirvin 397497dd61 isci: Check IDEV_GONE before performing abort path operations.
In the link fail path, set IDEV_GONE for every device on the domain
when the last link in the port fails.

In the abort path functions like isci_reset_device, make sure that
there has not already been a detected domain failure with the device
by checking IDEV_GONE, before performing any kind of hard reset, SMP
phy control, or TMF operation.

The check for IDEV_GONE makes sure that the device in the abort path
really has control of the port with which it is associated.  This
prevents starting hard resets at incorrect times and scheduling
unnecessary LUN resets for SATA devices.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:43 -07:00
Jeff Skirvin 87805162b6 isci: Restore the ATAPI device RNC management code.
The ATAPI specific and STP general RNC suspension code had been
incorrectly removed from the remote device code.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:43 -07:00
Jeff Skirvin 1f05388933 isci: Don't wait for an RNC suspend if it's being destroyed.
Make sure that the wait for suspend can handle the RNC destruction case.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:43 -07:00
Jeff Skirvin c5457a82a4 isci: Change the phy control and link reset interface for HW reasons.
There is an apparent HW lockup caused when the PE is disabled while there
is an outstanding TC in progress.  This change puts the link into OOB to
force the TC to end before the PE is disabled.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:42 -07:00
Jeff Skirvin 8c731888bf isci: Added timeouts to RNC suspensions in the abort path.
This change adds timeouts to the RNC suspension wait.  It makes the
suspend and resume timeouts the same.

The previous resume timeout of 5 ms was too short, and timeouts were
seen in resumptions of devices in the abort task/LUN reset path - which
would receive an RNC resumed message within a tenth of a second later.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:42 -07:00
Jeff Skirvin 28de92bef0 isci: Add protocol indicator for TMF requests.
Requests contructed as task management requests need to have the protocol
indicator set so the completion decode can observe any RNC suspension
conditions.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:42 -07:00
Jeff Skirvin 1db79b3e78 isci: Directly control IREQ_ABORT_PATH_ACTIVE when completing TMFs.
TMF requests, unlike normal I/O requests, need to handle I/O management
conditions in the completion function because TMFs are not handled in the
completion tasklet.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:42 -07:00
Jeff Skirvin 0cce165e28 isci: Wait for RNC resumption before leaving the abort path.
In the case of TMF execution, or device resets, wait for the RNC to fully
resume before returning to the caller.  This ensures that the remote
device will not fail I/O requests while waiting for the RNC resumption to
complete.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:42 -07:00
Jeff Skirvin d76689e46c isci: Fix RNC suspend call for SCI_RESUMING state.
Instead of immediately transitioning to the SCI_RNC_AWAIT_SUSPENSION
state, handle the SCI_RNC_RESUMING suspend transition from the
SCI_RNC_READY state like the SCI_RNC_INVALIDATING --> SCI_RNC_POSTING
transitions do now, by setting the destination state for the entry
into the READY state.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:41 -07:00
Jeff Skirvin 621120ca56 isci: Manage tag releases differently when aborting tasks.
When an individual request is being terminated, the request's tag
is managed in the terminate function.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:41 -07:00
Jeff Skirvin 033d19d298 isci: Callbacks to libsas occur under scic_lock and are synchronized.
This patch changes the callback mechanism to libsas to only occur while
the scic_lock is held; the abort path cleanup of I/Os also checks to make
sure IREQ_ABORT_PATH_ACTIVE is clear before proceding.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:41 -07:00
Jeff Skirvin 0c3ce38f1b isci: When in the abort path, defeat other resume calls until done.
Completion of I/Os during the one of the abort path interface calls
from libsas can drive remote device state changes and the resumption
of the device RNC.  This is a problem when the abort path is
attempting to cleanup outstanding I/O at the same time - the resumption
can prevent the termination from occuring correctly.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:41 -07:00
Jeff Skirvin 31a38ef0a5 isci: Implement waiting for suspend in the abort path.
In order to prevent a device from receiving an I/O request while still
in an RNC suspending or resuming state (and therefore failing that
I/O back to libsas with a reset required status) wait for the RNC state
change before proceding in the abort path.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:41 -07:00
Jeff Skirvin 08c031e4e3 isci: Make sure all TCs are terminated and cleaned in LUN reset.
In the libsas error path, SATA disks require extra handling in
libata to recover operation.  However, libsas expects to be able
to immediately recover all outstanding I/O once the error handler
escalation stops.  This patch fixes the condition where the libata
error handler is scheduled for operation but libsas has already
deleted the outstanding sas_tasks.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:40 -07:00
Jeff Skirvin 9608b6408e isci: Manage the LLHANG timer enable/disable per-device.
The LLHANG timer should be enabled once per device.  This patch corrects
both the timer enable and the timer disable for the remote device.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:40 -07:00
Jeff Skirvin 447bfbcee0 isci: Save the suspension hint for upcoming suspensions.
In the case of a suspend call while in SCI_RNC_POSTING or INVALIDATING
states, the LLHANG detect needed to be saved so the upcoming suspension
would enable it correctly.  The unused suspend callback parameters were
removed.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:40 -07:00
Jeff Skirvin e3c84dfdb8 isci: Fix the terminated I/O to not call sas_task_abort().
This addresses a regression from the commit "isci: Redesign
device suspension, abort, cleanup." in which the sas_task end
condition for terminated I/Os was made to call back on
sas_task_abort()".
This commit will be rolled into the original.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:40 -07:00
Jeff Skirvin c94fc1ad25 isci: Distinguish between remote device suspension cases
For NCQ error conditions among others, there is no need to enable
the link layer hang detect timer.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:40 -07:00
Jeff Skirvin d6b2a0e4a0 isci: Remove isci_device reqs_in_process and dev_node from isci_device.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:39 -07:00
Jeff Skirvin 033751f664 isci: Only set IDEV_GONE in the device stop path.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:39 -07:00
Jeff Skirvin aa20d93430 isci: All pending TCs are terminated when the RNC is invalidated.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:39 -07:00
Jeff Skirvin 637325028f isci: Device access in the error path does not depend on IDEV_GONE.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:39 -07:00
Jeff Skirvin 59e3539643 isci: Add suspension cases for RNC INVALIDATING, POSTING states.
The RNC can be any of the states in the loop from suspended to
ready when the API "suspend" or "resume" are called.  This change
adds destination states parameters that control the suspension /
resumption action of the RNC statemachine for those transition states.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:39 -07:00
Jeff Skirvin 14aaa9f0a3 isci: Redesign device suspension, abort, cleanup.
This commit changes the means by which outstanding I/Os are handled
for cleanup.
The likelihood is that this commit will be broken into smaller pieces,
however that will be a later revision.  Among the changes:

- All completion structures have been removed from the tmf and
abort paths.
- Now using one completed I/O list, with the I/O completed in host bit being
used to select error or normal callback paths.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:38 -07:00
Jeff Skirvin d80ecd5726 isci: Escalate to I_T_Nexus_Reset when the device is gone.
If LUN reset sees that the device is gone, it returns TMF_RESP_FUNC_FAILED
to cause libsas to escalate to an I_T_Nexus_Reset.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:38 -07:00
Jeff Skirvin 83884014ea isci: Remote device stop also suspends the RNC and terminates I/O.
Fixing the remote device state machine to suspend and terminate
all outstanding I/O before the device stopped state is reached.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:37 -07:00
Jeff Skirvin 23ec2aa947 isci: Remote device must be suspended for NCQ cleanup.
When the remote device enters the NCQ error state, the device must
be suspended so that the I/O terminations can take place.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:37 -07:00
Jeff Skirvin 5b6bf225e7 isci: Manage device suspensions during TC terminations.
TCs must be terminated only while the RNC is suspended.  This commit
adds remote device suspensions and resumptions in the abort, reset and
termination paths.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:37 -07:00
Jeff Skirvin 726980d569 isci: Terminate outstanding TCs on TX/RX RNC suspensions.
TCs must only be terminated when RNCs are suspended.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:37 -07:00
Jeff Skirvin ac78ed0f78 isci: Handle all suspending TC completions
Add comprehensive decode for all TC completions that generate RNC
suspensions.

Note that this commit also removes unconditional resumptions of ATAPI
devices when in the SCI_STP_DEV_ATAPI_ERROR state, and STP devices
when in the SCI_STP_DEV_IDLE state. This is because the SCI_STP_DEV_IDLE
and SCI_STP_DEV_ATAPI state entry functions manage the RNC resumption.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17 14:33:37 -07:00