kern/123666: aac(4) will not work with Adaptec SAS RAID 3805 controller

[Romain Tartiere]

>Number:         123666
>Category:       kern
>Synopsis:       aac(4) will not work with Adaptec SAS RAID 3805 controller
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed May 14 10:10:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Romain Tartiere
>Release:        FreeBSD 7.0-STABLE i386
>Organization:
>Environment:
System:
  - FreeBSD 7.0-STABLE i386
  - FreeBSD 8.0-CURRENT i386 (April snapshot)

>Description:

The aac(4) driver will detect an Adaptec SAS RAID 3805 controller but
fail configuring it for use. Boot messages will show the following:
> aac0: <Adaptec RAID 3805> mem 0xff200000-0xff3fffff irq 16 at device 14.0 on pci3
> aac0: couldn't allocate register window
> device_attach: aac0 attach returned 6

The controller is however listed as a supported one by the aac(4) man
page:
> % man aac | grep 3805
>      o	 Adaptec SAS RAID 3805

Compiling the kernel with "options AAC_DEBUG=3" only adds additional...
> aac_pci_probe:
... but nothing more relevant.

I can perform tests and provide feedback to help fixing this issue.

>How-To-Repeat:
Plug a controller and boot :-)

>Fix:

No fix is known at the time of sending this PR.

Unsuccessful attempt to fix the problem for which diff are available on
demand include:
  - Patch the Adaptec driver provided on the CD-ROM for FreeBSD 5/6 so
    that is builds on FreeBSD 7;
  - Patch the last version of the Adaptec driver provided on the Adaptec
    website to merge changes of the FreeBSD aac(4) driver from FreeBSD 6
    to 7.

>Release-Note:
>Audit-Trail:
>Unformatted: