Adaptec 2200S hang with 5.3 kernel and APIC enabled

[Mike Selner]

Hi,

I have a new supermicro X6DH8-G server with an Adaptec 2200S RAID
controller. 2200S firmware build 7349.

I booted and installed FreeBSD from the 5.2.1 CD image.  System was fine.

I did cvsup to 5.3-STABLE & installed new kernel and world.
When I restarted it would display:

Waiting 15 seconds for SCSI devices to settle
aacd0: <RAID 0/1> on aac0
aacd0: 139948MB (286614016 sectors)

and than hang for about 45 seconds.  Then I would get a continual message:

AAC0 command 0xc31c3bb8 TIMEOUT AFTER X Seconds
(the command changes through a small group of values) forever.

The same thing happens with the 5.3 Kernel from the MINI ISO cdrom.

I was able to determine that it is related to the APIC interrupt
by trying safe mode and device hints.

If I include the /boot/device.hints =
hint.apic.0.disabled="1"
the kernel I built boots and seems to work fine.
I stress tested by doing several of simultaneous compiles.

The 5.2 kernel is still installed as /kernel.orig.
It shows a dmesg line for the controller as:

aac0: <Adaptec SCSI RAID 2200S> mem 0xdc000000-0xdfffffff irq 72 at device 2.0 on pci3
aac0: [MPSAFE]
aac0: Unknown processor 100MHz, 48MB cache memory, optional battery not installed
aac0: Kernel 4.2-0, Build 7349, S/N be8f06
aac0: Supported Options=31d7e<CLUSTERS,WCACHE,DATA64,HOSTTIME,RAID50,WINDOW4GB,SOFTERR,SGMAP64,ALARM,NONDASD>
aacp0: <SCSI Passthrough Bus> on aac0
aacp1: <SCSI Passthrough Bus> on aac0

The 5.3 kernel I built and boot with the above hint returns:

aac0: <Adaptec SCSI RAID 2200S> mem 0xdc000000-0xdfffffff irq 5 at device 2.0 on pci3
aac0: can't set up FAST interrupt
aac0: Unknown processor 100MHz, 48MB cache memory, optional battery not installed
aac0: Kernel 4.2-0, Build 7349, S/N be8f06
aac0: Supported Options=31d7e<CLUSTERS,WCACHE,DATA64,HOSTTIME,RAID50,WINDOW4GB,SOFTERR,SGMAP64,ALARM,NONDASD>
aacp0: <SCSI Passthrough Bus> on aac0
aacp1: <SCSI Passthrough Bus> on aac0

My questions:

1. Is there any reason not to run with hint.apic.0.disabled="1"?  Any disadvatages to
   the smaller number of IRQs?
   I do not have many devices, no usb/onboard scsi.  Only need ide cdrom occasionally.

2. Wher should I report this for fixing?

3. Are there any other suggestions / recommendations?

thank you

-- 
Mike Selner