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2012-11-13[SCSI] isci: copy fis 0x34 response into proper bufferMaciej Patelczyk1-1/+1
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>
2012-10-02Merge tag 'scsi-for-linus' of ↵Linus Torvalds6-14/+78
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 ...
2012-10-02Merge SCSI misc branch into isci-for-3.6 tagJames Bottomley3-9/+73
2012-10-01Merge branch 'for-linus' of ↵Linus Torvalds5-5/+5
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 ...
2012-09-24[SCSI] isci: Fix interrupt coalescing assumption of active TCsDave Jiang1-2/+8
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[SCSI] isci: Allow SSP tasks into the task management path.Jeff Skirvin1-4/+6
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>
2012-09-13Merge tag 'isci-for-3.6' into for-nextJames Bottomley5-5/+5
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
2012-09-01treewide: fix comment/printk/variable typosAnatol Pomozov3-3/+3
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-01scsi: fix various printk and comment typosMasanari Iida2-2/+2
Correct spelling typo within drivers/scsi Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-08-24[SCSI] isci: implement suspend/resume supportArtur Wojcik3-3/+59
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>
2012-07-20[SCSI] isci: use sas eh strategy handlersDan Williams1-0/+3
...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>
2012-07-03isci: add a couple __iomem annotationsDan Carpenter2-2/+2
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>
2012-07-03isci: make function declaration match implementationDan Carpenter1-1/+1
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>
2012-07-03isci: fix COMSAS negation timout workaround for WD SAS drivesDave Maurer1-0/+2
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>
2012-07-03isci: fix isci_pci_probe() generates warning on efi failure pathDan Williams2-2/+0
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>
2012-05-17isci: End the RNC resumption wait when the RNC is destroyed.Jeff Skirvin4-11/+33
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>
2012-05-17isci: Fixed RNC bug that lost the suspension or resumption during destroyJeff Skirvin1-58/+38
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>
2012-05-17isci: Fix RNC AWAIT_SUSPENSION->INVALIDATING transition.Jeff Skirvin1-5/+13
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>
2012-05-17isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock.Jeff Skirvin1-1/+4
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>
2012-05-17isci: Remove obviated host callback list.Jeff Skirvin5-66/+31
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>
2012-05-17isci: Check IDEV_GONE before performing abort path operations.Jeff Skirvin2-21/+57
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>
2012-05-17isci: Restore the ATAPI device RNC management code.Jeff Skirvin3-20/+34
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>
2012-05-17isci: Don't wait for an RNC suspend if it's being destroyed.Jeff Skirvin3-4/+28
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>
2012-05-17isci: Change the phy control and link reset interface for HW reasons.Jeff Skirvin1-0/+2
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>
2012-05-17isci: Added timeouts to RNC suspensions in the abort path.Jeff Skirvin2-11/+55
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>
2012-05-17isci: Add protocol indicator for TMF requests.Jeff Skirvin1-0/+6
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>
2012-05-17isci: Directly control IREQ_ABORT_PATH_ACTIVE when completing TMFs.Jeff Skirvin1-0/+3
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>
2012-05-17isci: Wait for RNC resumption before leaving the abort path.Jeff Skirvin2-2/+53
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>
2012-05-17isci: Fix RNC suspend call for SCI_RESUMING state.Jeff Skirvin1-8/+4
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>
2012-05-17isci: Manage tag releases differently when aborting tasks.Jeff Skirvin4-6/+12
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>
2012-05-17isci: Callbacks to libsas occur under scic_lock and are synchronized.Jeff Skirvin2-13/+40
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>
2012-05-17isci: When in the abort path, defeat other resume calls until done.Jeff Skirvin3-46/+83
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>
2012-05-17isci: Implement waiting for suspend in the abort path.Jeff Skirvin5-22/+66
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>
2012-05-17isci: Make sure all TCs are terminated and cleaned in LUN reset.Jeff Skirvin1-6/+8
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>
2012-05-17isci: Manage the LLHANG timer enable/disable per-device.Jeff Skirvin3-8/+20
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>
2012-05-17isci: Save the suspension hint for upcoming suspensions.Jeff Skirvin4-18/+12
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>
2012-05-17isci: Fix the terminated I/O to not call sas_task_abort().Jeff Skirvin1-1/+1
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>
2012-05-17isci: Distinguish between remote device suspension casesJeff Skirvin4-25/+28
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>
2012-05-17isci: Remove isci_device reqs_in_process and dev_node from isci_device.Jeff Skirvin6-25/+1
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Only set IDEV_GONE in the device stop path.Jeff Skirvin2-26/+0
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: All pending TCs are terminated when the RNC is invalidated.Jeff Skirvin1-2/+2
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Device access in the error path does not depend on IDEV_GONE.Jeff Skirvin1-2/+5
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Add suspension cases for RNC INVALIDATING, POSTING states.Jeff Skirvin4-63/+105
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>
2012-05-17isci: Redesign device suspension, abort, cleanup.Jeff Skirvin11-1474/+418
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>
2012-05-17isci: Escalate to I_T_Nexus_Reset when the device is gone.Jeff Skirvin1-2/+2
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>
2012-05-17isci: Remote device stop also suspends the RNC and terminates I/O.Jeff Skirvin1-12/+11
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>
2012-05-17isci: Remote device must be suspended for NCQ cleanup.Jeff Skirvin1-13/+12
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>
2012-05-17isci: Manage device suspensions during TC terminations.Jeff Skirvin3-49/+154
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>
2012-05-17isci: Terminate outstanding TCs on TX/RX RNC suspensions.Jeff Skirvin7-32/+188
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>
2012-05-17isci: Handle all suspending TC completionsJeff Skirvin7-87/+242
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>
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