cvs commit: src/sys/dev/ata ata-all.c ata-all.h ata-dma.c ata-pci.c

[Doug Ambrisko]

Yar Tikhiy writes:
| On Wed, Apr 20, 2005 at 11:51:32PM +0000, Doug Ambrisko wrote:
| > ambrisko    2005-04-20 23:51:32 UTC
| > 
| >   FreeBSD src repository
| > 
| >   Modified files:        (Branch: RELENG_4)
| >     sys/dev/ata          ata-all.c ata-all.h ata-dma.c ata-pci.c 
| >   Log:
| >   Add in Promise and Intel SATA support based on FreeBSD 5.X ATAng.
| >   This gets the HW to work but not to deal with SATA errors.  So if
| >   the drive has a read error it will probably lock up.  This is
| >   a small subset of my patches that do deal with these errors and
| >   other issues in FreeBSD and ata-raid.
| >   
| >   Sponsored by:   IronPort Systems
| >   
| >   Revision   Changes    Path
| >   1.50.2.49  +168 -36   src/sys/dev/ata/ata-all.c
| >   1.26.2.15  +166 -13   src/sys/dev/ata/ata-all.h
| >   1.35.2.39  +95 -17    src/sys/dev/ata/ata-dma.c
| >   1.32.2.22  +164 -18   src/sys/dev/ata/ata-pci.c
| 
| I myself was bitten by RELENG_4 ATA support lagging behind modern
| hardware, which made me move to RELENG_5 on some systems at last.
| However, isn't your change too big and possibly destabilizing for
| the conservative RELENG_4 branch?  I'm judging by the number of
| changed lines only.  And honestly, I'm having trouble understanding
| from the commit message whether your change introduces or corrects
| the bug in SATA error detection.

It makes some Promise HW work that wouldn't probe at all.  For the
Intel stuff adds device ID's.  Most of the changed lines are a
mechanical type thing which is using the new indirection macros so
we can probe HW like that in the Promise cards.  The core ATA code
didn't change.  Addition code was required to make the Promise HW work.

It is based on a subset of stuff at:
	http://www.ambrisko.com/doug/ata/
which has been running on lots of machines.  This patchset which is
approaching 140k has lots of various panic (ata & FreeBSD) fixes and 
enhanced SATA & ata-raid support that prevents systems from freezing, 
crashing and automatic drive recovery in mirrors.  I don't plan to be
merge all of that in, just the basic HW support so people can install.

It looks like in ata mkIII there is better support of SATA & RAID stuff 
going in so that looks encouraging.

Doug A.