linux-toradex.git/drivers/scsi/isci, branch v3.6-rc1

[SCSI] isci: use sas eh strategy handlers

2012-07-20T07:58:51+00:00

...now that the strategy handlers guarantee eh context and notify
the driver of bus reset.

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

isci: End the RNC resumption wait when the RNC is destroyed.

2012-05-17T21:33:44+00:00

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 
Signed-off-by: Dan Williams

isci: Fixed RNC bug that lost the suspension or resumption during destroy

2012-05-17T21:33:44+00:00

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 
Signed-off-by: Dan Williams

isci: Fix RNC AWAIT_SUSPENSION->INVALIDATING transition.

2012-05-17T21:33:44+00:00

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 
Signed-off-by: Dan Williams

isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock.

2012-05-17T21:33:44+00:00

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 
Signed-off-by: Dan Williams

isci: Remove obviated host callback list.

2012-05-17T21:33:44+00:00

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 
Signed-off-by: Dan Williams

isci: Check IDEV_GONE before performing abort path operations.

2012-05-17T21:33:43+00:00

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 
Signed-off-by: Dan Williams

isci: Restore the ATAPI device RNC management code.

2012-05-17T21:33:43+00:00

The ATAPI specific and STP general RNC suspension code had been
incorrectly removed from the remote device code.

Signed-off-by: Jeff Skirvin 
Signed-off-by: Dan Williams

isci: Don't wait for an RNC suspend if it's being destroyed.

2012-05-17T21:33:43+00:00

Make sure that the wait for suspend can handle the RNC destruction case.

Signed-off-by: Jeff Skirvin 
Signed-off-by: Dan Williams

isci: Change the phy control and link reset interface for HW reasons.

2012-05-17T21:33:42+00:00

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 
Signed-off-by: Dan Williams