linux-stable.git/drivers/scsi/aacraid/src.c, branch linux-4.1.y

scsi: aacraid: Reorder Adapter status check

2017-05-17T19:06:59+00:00

[ Upstream commit c421530bf848604e97d0785a03b3fe2c62775083 ]

The driver currently checks the SELF_TEST_FAILED first and then
KERNEL_PANIC next. Under error conditions(boot code failure) both
SELF_TEST_FAILED and KERNEL_PANIC can be set at the same time.

The driver has the capability to reset the controller on an KERNEL_PANIC,
but not on SELF_TEST_FAILED.

Fixed by first checking KERNEL_PANIC and then the others.

Cc: stable@vger.kernel.org
Fixes: e8b12f0fb835223752 ([SCSI] aacraid: Add new code for PMC-Sierra's SRC base controller family)
Signed-off-by: Raghava Aditya Renukunta 
Reviewed-by: David Carroll 
Reviewed-by: Johannes Thumshirn 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Sasha Levin

aacraid: Fix RRQ overload

2016-04-18T12:50:39+00:00

[ Upstream commit 3f4ce057d51a9c0ed9b01ba693df685d230ffcae ]

The driver utilizes an array of atomic variables to keep track of IO
submissions to each vector. To submit an IO multiple threads iterate
through the array to find a vector which has empty slots to send an
IO. The reading and updating of the variable is not atomic, causing race
conditions when a thread uses a full vector to submit an IO.

Fixed by mapping each FIB to a vector, the submission path then uses
said vector to submit IO thereby removing the possibly of a race
condition.The vector assignment is started from 1 since vector 0 is
reserved for the use of AIF management FIBS.If the number of MSIx
vectors is 1 (MSI or INTx mode) then all the fibs are allocated to
vector 0.

Fixes: 495c0217 "aacraid: MSI-x support"
Cc: stable@vger.kernel.org # v4.1

Signed-off-by: Raghava Aditya Renukunta 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Tomas Henzl 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Sasha Levin

aacraid: performance improvement changes

2015-04-09T23:55:21+00:00

Signed-off-by: Mahesh Rajashekhara 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Murthy Bhat 
Signed-off-by: James Bottomley

aacraid: IOP RESET command handling changes

2015-04-09T23:53:37+00:00

This patch fixes the IOP_RESET issue. Sending IOP_RESET command need to wait
for only 10 sec instead of 5 minutes in case of firmware does not response
IOP_RESET command.  Disable interrupt before setup interrupt routine to
prevent spurious interrupts.

Signed-off-by: Mahesh Rajashekhara 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Murthy Bhat 
Signed-off-by: James Bottomley

aacraid: MSI-x support

2015-04-09T23:48:15+00:00

Signed-off-by: Mahesh Rajashekhara 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Murthy Bhat 
Signed-off-by: James Bottomley

[SCSI] remove deprecated IRQF_DISABLED from SCSI

2014-03-19T22:04:44+00:00

It's a NOOP since 2.6.35 and it will be removed one day.

[jejb: remove from missed arm scsi drivers]
Signed-off-by: Michael Opdenacker 
Signed-off-by: James Bottomley

[SCSI] aacraid: Fix for arrays are going offline in the system. System hangs

2013-06-27T01:01:42+00:00

One of the customer had reported that the set of raid logical arrays will
become unavailable (I/O offline) after a long hours of IO stress test.  The OS
wouldn`t be accessible afterwards and require a hard reset.

This driver patch has a fix for race condition between the doorbell and the
circular buffer. The driver is modified to do an extra read after clearing the
doorbell in case there had been a completion posted during the small timing
window.

With this fix, we ran IO stress for ~13 days. There were no IO failures.

Signed-off-by: Mahesh Rajashekhara 
Cc: 
Signed-off-by: James Bottomley

[SCSI] aacraid: Dual firmware image support

2013-04-10T18:55:52+00:00

This patch adds dual flash firmware support for Series 7 and above controllers.

[thenzl: used ssleep(10) instead udelay]
Signed-off-by: Mahesh Rajashekhara 
Reviewed-by: Tomas Henzl 
Signed-off-by: James Bottomley

[SCSI] aacraid: suppress two GCC warnings

2013-02-24T09:38:10+00:00

Building src.o for a 32 bit system triggers two GCC warnings:
    drivers/scsi/aacraid/src.c: In function ‘aac_src_deliver_message’:
    drivers/scsi/aacraid/src.c:410:3: warning: right shift count >= width of type [enabled by default]
    drivers/scsi/aacraid/src.c:434:2: warning: right shift count >= width of type [enabled by default]

These warnings are caused by a right shift of 32. Use upper_32_bits() to
suppress them.

Signed-off-by: Paul Bolle 
Cc: Mahesh Rajashekhara 
Signed-off-by: James Bottomley

[SCSI] aacraid: Series 7 Async. (performance) mode support

2012-07-20T07:59:04+00:00

- Series 7 Async. (performance) mode support added
- New scatter/gather list format for Series 7
- Driver converts s/g list to a firmware suitable list for best performance on
  Series 7, this can be disabled with driver parameter "aac_convert_sgl" for
  testing purposes
- New container read/write command structure for Series 7
- Fast response support for the SCSI pass-through path added
- Async. status response buffer changes

Signed-off-by: Mahesh Rajashekhara 
Signed-off-by: James Bottomley