Eric Lee / smarc-fsl-linux-kernel

24 Aug, 2012

1 commit

  • 303694eee   [SCSI] libsas: suspend / resume support ... Browse Code »

    libsas power management routines to suspend and recover the sas domain
    based on a model where the lldd is allowed and expected to be
    "forgetful".

    sas_suspend_ha - disable event processing allowing the lldd to take down
    links without concern for causing hotplug events.
    Regardless of whether the lldd actually posts link down
    messages libsas notifies the lldd that all
    domain_devices are gone.

    sas_prep_resume_ha - on the way back up before the lldd starts link
    training clean out any spurious events that were
    generated on the way down, and re-enable event
    processing

    sas_resume_ha - after the lldd has started and decided that all phys
    have posted link-up events this routine is called to let
    libsas start it's own timeout of any phys that did not
    resume. After the timeout an lldd can cancel the
    phy teardown by posting a link-up event.

    Storage for ex_change_count (u16) and phy_change_count (u8) are changed
    to int so they can be set to -1 to indicate 'invalidated'.

    Signed-off-by: Dan Williams
    Reviewed-by: Jacek Danecki
    Tested-by: Maciej Patelczyk
    Acked-by: Alan Stern
    Signed-off-by: James Bottomley

    Dan Williams
     

23 Apr, 2012

1 commit

  • 22b9153fa   [SCSI] libsas: introduce sas_work to fix sas_drain_work vs sas_queue_work ... Browse Code »

    When requeuing work to a draining workqueue the last work instance may
    not be idle, so sas_queue_work() must not touch work->entry. Introduce
    sas_work with a drain_node list_head to have a private list for
    collecting work deferred due to drain collision.

    Fixes reports like:
    BUG: unable to handle kernel NULL pointer dereference at (null)
    IP: [] process_one_work+0x2e/0x338

    Signed-off-by: Dan Williams
    Signed-off-by: James Bottomley

    Dan Williams
     

20 Feb, 2012

1 commit

27 May, 2011

1 commit

  • 90f1e10d0   [SCSI] libsas: fix/amend device gone notification in sas_deform_port() ... Browse Code »

    Commit 56dd2c06 "libsas: Don't issue commands to devices that have been
    hot-removed" edited Darrick's original patch to remove setting 'gone' in
    the sas_deform_port() path because that prevented scsi sync cache
    commands from being issued when the driver was unloaded. However, this
    allows true device gone notifications (as signaled port phy events) to
    trigger sync cache commands to devices that are known to be unreachable.

    Teach libsas which sas_deform_port() invocations are likely device gone
    events.

    Signed-off-by: Dan Williams
    Signed-off-by: James Bottomley

    Dan Williams
     

22 Nov, 2006

1 commit

08 Sep, 2006

1 commit

  • a01e70e57   [SCSI] aci94xx: implement link rate setting ... Browse Code »

    This patch implements the ability to set the minimum and maximum
    linkrates for both libsas (for expanders) and aic94xx (for the host
    phys). It also tidies up the setting of the hardware min and max to
    make sure they're updated when the expander emits a change broadcast.

    Signed-off-by: James Bottomley

    James Bottomley
     

29 Aug, 2006

1 commit

  • 2908d778a   [SCSI] aic94xx: new driver ... Browse Code »

    This is the end point of the separate aic94xx driver based on the
    original driver and transport class from Luben Tuikov

    The log of the separate development is:

    Alexis Bruemmer:
    o aic94xx: fix hotplug/unplug for expanderless systems
    o aic94xx: disable split completion timer/setting by default
    o aic94xx: wide port off expander support
    o aic94xx: remove various inline functions
    o aic94xx: use bitops
    o aic94xx: remove queue comment
    o aic94xx: remove sas_common.c
    o aic94xx: sas remove depot's
    o aic94xx: use available list_for_each_entry_safe_reverse()
    o aic94xx: sas header file merge

    James Bottomley:
    o aic94xx: fix TF_TMF_NO_CTX processing
    o aic94xx: convert to request_firmware interface
    o aic94xx: fix hotplug/unplug
    o aic94xx: add link error counts to the expander phys
    o aic94xx: add transport class phy reset capability
    o aic94xx: remove local_attached flag
    o Remove README
    o Fixup Makefile variable for libsas rename
    o Rename sas->libsas
    o aic94xx: correct return code for sas_discover_event
    o aic94xx: use parent backlink port
    o aic94xx: remove channel abstraction
    o aic94xx: fix routing algorithms
    o aic94xx: add backlink port
    o aic94xx: fix cascaded expander properties
    o aic94xx: fix sleep under lock
    o aic94xx: fix panic on module removal in complex topology
    o aic94xx: make use of the new sas_port
    o rename sas_port to asd_sas_port
    o Fix for eh_strategy_handler move
    o aic94xx: move entirely over to correct transport class formulation
    o remove last vestages of sas_rphy_alloc()
    o update for eh_timed_out move
    o Preliminary expander support for aic94xx
    o sas: remove event thread
    o minor warning cleanups
    o remove last vestiges of id mapping arrays
    o Further updates
    o Convert aic94xx over entirely to the transport class end device and
    o update aic94xx/sas to use the new sas transport class end device
    o [PATCH] aic94xx: attaching to the sas transport class
    o Add missing completion removal from prior patch
    o [PATCH] aic94xx: attaching to the sas transport class
    o Build fixes from akpm

    Jeff Garzik:
    o [scsi aic94xx] Remove ->owner from PCI info table

    Luben Tuikov:
    o initial aic94xx driver

    Mike Anderson:
    o aic94xx: fix panic on module insertion
    o aic94xx: stub out SATA_DEV case
    o aic94xx: compile warning cleanups
    o aic94xx: sas_alloc_task
    o aic94xx: ref count update
    o aic94xx nexus loss time value
    o [PATCH] aic94xx: driver assertion in non-x86 BIOS env

    Randy Dunlap:
    o libsas: externs not needed

    Robert Tarte:
    o aic94xx: sequence patch - fixes SATA support

    Signed-off-by: James Bottomley

    James Bottomley