FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F8.4.0 2013-02-06T18:41:12Z 2013-02-06T18:41:12Z Alexander Motin mav@FreeBSD.org 2013-02-06T18:41:12Z urn:sha1:147c0c8fb640a7eea5ff32d283f21c960bb2a9df Remove priority enforcement from xpt_ation(). It is not good and even not safe in some cases to reduce CCB priority after it was scheduled with high priority. This fixes reproducible deadlock when command sent through the pass interface while ATA XPT recovers from command timeout. Instead of that enforce priority at passioctl(). libcam provides no obvious interface to specify CCB priority and so much (all?) code specifies zero (highest) priority. This change limits pass CCBs priority to NORMAL run level, allowing XPT to complete bus and device recovery after reset before running any payload. 2012-06-27T11:04:04Z Alexander Motin mav@FreeBSD.org 2012-06-27T11:04:04Z urn:sha1:a758cb42850f9e5f1ba57166f2052264a80245eb In camisr() clear CAM_SIM_ON_DONEQ flag after camisr_runqueue() purged SIM done queue. Clearing it before caused extra SIM queueing in some cases. It was invisible during normal operation, but during USB device unplug and respective SIM destruction it could keep pointer on SIM without having counted reference and as result crash the system by use afer free. PR: usb/168743 2012-06-20T14:47:39Z Alexander Motin mav@FreeBSD.org 2012-06-20T14:47:39Z urn:sha1:a6fd194e3e704800ec90ab5b8bb260484a6f90a1 Add CAM_DEBUG_INFO debug messages for periph created/invalidated/destroyed and for asyncs sent. 2012-06-20T14:39:35Z Alexander Motin mav@FreeBSD.org 2012-06-20T14:39:35Z urn:sha1:3c2606b31a02ae4fb4fb95838690a10bd9d24aa3 To make CAM debugging easier, compile in some debug flags (CAM_DEBUG_INFO, CAM_DEBUG_CDB, CAM_DEBUG_PERIPH and CAM_DEBUG_PROBE) by default. List of these flags can be modified with CAM_DEBUG_COMPILE kernel option. CAMDEBUG kernel option still enables all possible debug, if not overriden. Additional 50KB of kernel size is a good price for the ability to debug problems without rebuilding the kernel. In case where size is important, debugging can be compiled out by setting CAM_DEBUG_COMPILE option to 0. 2012-06-20T13:42:40Z Alexander Motin mav@FreeBSD.org 2012-06-20T13:42:40Z urn:sha1:76c1a3b87404cf24079e80f7ced30dea0e5160a5 Replace #ifdef CAMDEBUG + if + panic() with single KASSERT(). 2012-06-09T08:51:25Z Alexander Motin mav@FreeBSD.org 2012-06-09T08:51:25Z urn:sha1:41b711081f73f004b2197dcb76bf3ea9d30d24e2 Fixes for sure bus reference miscounting and potential device and target reference miscounts. It also adds a helper function to get the current reference counts for components of cam_path for debug aid. One minor style(9) change. 2012-06-09T07:44:51Z Alexander Motin mav@FreeBSD.org 2012-06-09T07:44:51Z urn:sha1:cd43a2268e35edafcf5d7abc39a853ac95df872f Rewrite enabling NCQ for SATA devices in a way more alike to SCSI TCQ. This allows to control it with `camcontrol negotiate adaX -T (en|dis)able` on the fly, same as for SCSI devices. Sponsored by: iXsystems, Inc. 2012-06-09T07:36:18Z Alexander Motin mav@FreeBSD.org 2012-06-09T07:36:18Z urn:sha1:cad4059f4eed75ab95c0a9fd57480c5c4726a069 Use AC_GETDEV_CHANGED async to notify ada driver about DMA and NCQ status change. Now that allows switching between PIO and DMA modes on the fly. 2012-06-09T07:29:07Z Alexander Motin mav@FreeBSD.org 2012-06-09T07:29:07Z urn:sha1:189380d245a48dd34d583fe62d7fdef643a390f8 Allow to change number of openings (used tags) for ATA/SATA devices via `camcontrol tags ... -N ...`. There is no need to tune it in usual cases, but some users want to have it for debugging purposes. 2012-06-06T11:46:37Z Alexander Motin mav@FreeBSD.org 2012-06-06T11:46:37Z urn:sha1:2ed8c8eece92a91a065a003b38bd5e94e47f311f Implement the usage of Report Luns as part of SCSI probing for SCP3 or better devices. This can be disabled on a per-device basis using quirks as well. This also handles the case where there is actually no connected LUN 0 (which can definitely be the case for storage arrays).