src/sys/dev/isci/isci_sysctl.c, branch stable/10 FreeBSD source tree MFC 276174: 2014-12-26T23:18:09+00:00 Scott Long scottl@FreeBSD.org 2014-12-26T23:18:09+00:00 2756e4d57dcdf68a6df60b3ad5e07e483b02b525 Fix tunable and sysctl handling of the fail_on_task_timeout knob. Reviewed by: emax Obtained from: Netflix, Inc. 
Fix tunable and sysctl handling of the fail_on_task_timeout knob.

Reviewed by:    emax
Obtained from:  Netflix, Inc.
Merge r268024, 268025: 2014-07-01T06:23:48+00:00 Scott Long scottl@FreeBSD.org 2014-07-01T06:23:48+00:00 a0d098249fb44e93a93f47dcd7bd3a989b2e4810 Fix a case in ndling ATA_PASSTHROUGH commands that have an unaligned buffer. This impacts some home-rolled SMART tools. In rare cases, a SATA drive can stop responding to commands and trigger a reset device task request from the driver. If the drive fails to respond with a signature FIS, the driver would previously get into an endless retry loop, stalling all I/O to the drive and keeping user processes stranded. Instead, fail the i/o and invalidate the device if the task management command times out. This is controllable with the sysctl and tunable hw.isci.fail_on_task_timeout dev.isci.0.fail_on_task_timeout The default for these is 1. Obtained from: Netflix, Inc. 
 Fix a case in ndling ATA_PASSTHROUGH commands that have an unaligned buffer.
 This impacts some home-rolled SMART tools.

 In rare cases, a SATA drive can stop responding to commands and trigger a
 reset device task request from the driver.  If the drive fails to respond
 with a signature FIS, the driver would previously get into an endless retry
 loop, stalling all I/O to the drive and keeping user processes stranded.
 Instead, fail the i/o and invalidate the device if the task management
 command times out.  This is controllable with the sysctl and tunable
 hw.isci.fail_on_task_timeout
 dev.isci.0.fail_on_task_timeout

 The default for these is 1.

Obtained from:	Netflix, Inc.
Improve logging around some of the isci(4) reset and recovery paths. 2013-10-09T19:37:41+00:00 Jim Harris jimharris@FreeBSD.org 2013-10-09T19:37:41+00:00 cce45f0b079764c42d8cde77a61370d4deb9dda6 Sponsored by: Intel Discussed with: scottl Approved by: re (marius) MFC after: 1 week 
Sponsored by:	Intel
Discussed with:	scottl
Approved by:	re (marius)
MFC after:	1 week
Add isci(4) driver for amd64 and i386 targets. 2012-01-31T19:38:18+00:00 Jim Harris jimharris@FreeBSD.org 2012-01-31T19:38:18+00:00 f11c7f63056671247335df83a3fe80b94c6616ac The isci driver is for the integrated SAS controller in the Intel C600 (Patsburg) chipset. Source files in sys/dev/isci directory are FreeBSD-specific, and sys/dev/isci/scil subdirectory contains an OS-agnostic library (SCIL) published by Intel to control the SAS controller. This library is used primarily as-is in this driver, with some post-processing to better integrate into the kernel build environment. isci.4 and a README in the sys/dev/isci directory contain a few additional details. This driver is only built for amd64 and i386 targets. Sponsored by: Intel Reviewed by: scottl Approved by: scottl 
The isci driver is for the integrated SAS controller in the Intel C600
(Patsburg) chipset.  Source files in sys/dev/isci directory are
FreeBSD-specific, and sys/dev/isci/scil subdirectory contains
an OS-agnostic library (SCIL) published by Intel to control the SAS
controller.  This library is used primarily as-is in this driver, with
some post-processing to better integrate into the kernel build
environment.

isci.4 and a README in the sys/dev/isci directory contain a few
additional details.

This driver is only built for amd64 and i386 targets.

Sponsored by: Intel
Reviewed by: scottl
Approved by: scottl