src-test2/sys/dev/ata/ata-queue.c, branch release/8.2.0_cvs

Copy releng/8.2 to release/8.2.0 for 8.2-RELEASE.

2011-02-16T16:18:46Z

Approved by: re (implicit) This commit was manufactured to restore the state of the 8.2-RELEASE image.

MFC r207221:

2010-05-02T12:40:54Z

Mark ATA channel as idle on timeout in non-ATA_CAM mode. This should fix possible duplicate request completion.

MFC r200171, r200182, r200275, r200295, r200359:

2009-12-12T10:37:31Z

Introduce ATA_CAM kernel option, turning ata(4) controller drivers into cam(4) interface modules. When enabled, this option deprecates all ata(4) peripheral drivers (ad, acd, ...) and interfaces and allows cam(4) drivers (ada, cd, ...) and interfaces to be natively used instead. As side effect of this, ata(4) mode setting code was completely rewritten to make controller API more strict and permit above change. While doing this, SATA revision was separated from PATA mode. It allows DMA-incapable SATA devices to operate and makes hw.ata.(ata|atapi)_dma tunable work again. Also allow ata(4) controller drivers (except some specific or broken ones) to handle larger data transfers. Previous constraint of 64K was artificial and is not really required by PCI ATA BM specification or hardware. Submitted by: nwitehorn (powerpc part)

MFC r198717:

2009-11-23T08:45:17Z

- Remove most of direct relations between ATA(4) peripherial and controller levels. It makes logic more transparent and is a mandatory step to wrap ATA(4) controller level into ATA-native CAM SIM. - Tune AHCI and SATA2 SiI drivers memory allocation a bit to allow bigger I/O transaction sizes without additional cost.

MFC r198486, r199050:

2009-11-10T22:37:44Z

Increase ATA command timeouts. Introduce define and kernel option ATA_REQUEST_TIMEOUT to control it. PR: kern/111023

MFC r198407:

2009-11-06T10:48:44Z

Do not differentiate 12/16 bytes ATAPI CCB formats when it is not needed.

Improve kernel dumping reliability for busy ATA channels:

2009-05-01T08:03:46Z

- Generate fake channel interrupts even if channel busy with previous request to let it finish. Without this, dumping requests were just queued and never processed. - Drop pre-dump requests queue on dumping. ATA code, working in dumping (interruptless) mode, unable to handle long request queue. Actually, to get coherent dump we anyway should do as few unrelated actions as possible.

Improve clarity: if (a && (b ? b : c)) -> if (a && (b || c))

2009-04-07T19:44:06Z

Submitted by: Christoph Mallon

Revert my ata_identify()/ata_reinit() related changes: r189166, r189091

2009-02-28T22:07:15Z

and partially r188903. Revert breaks new drives detection on reinit to the state as it was before me, but fixes series of new bugs reported by some people. Unconditional queueing of ata_completed() calls can lead to deadlock if due to timeout ata_reinit() was called at the same thread by previous ata_completed(). Calling of ata_identify() on ata_reinit() in current implementation opens numerous races and deadlocks. Problems I was touching here are still exist and should be addresed, but probably in different way.

Rollback rev. 189093.

2009-02-26T23:21:32Z

mtx_lock() is not needed there as callout initialized with callout_init_mtx(). Sorry. Submitted by: Ian Dowse