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Date:      Thu, 12 Aug 2010 15:39:36 GMT
From:      Bryce Simonds <bsimonds@veriam.com>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   kern/149580: When using an SIIG SATA card the error "Unexpected signature 0xa05f" is reported when a new drive is connected
Message-ID:  <201008121539.o7CFdaD1034745@www.freebsd.org>
Resent-Message-ID: <201008121540.o7CFe4hM015386@freefall.freebsd.org>

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>Number:         149580
>Category:       kern
>Synopsis:       When using an SIIG SATA card the error "Unexpected signature 0xa05f" is reported when a new drive is connected
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Aug 12 15:40:03 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Bryce Simonds
>Release:        8.1-RELEASE
>Organization:
Veriam Technology, Inc.
>Environment:
FreeBSD fossel 8.1-RELEASE FreeBSD 8.1-RELEASE #1: Thu Aug 12 10:08:51 CDT 2010     bsimonds@fossel:/usr/src/sys/i386/compile/FOSSEL  i386

>Description:
When using the SIIG DP SATA 6Gb/s 2S1P PCIe card an error is reported when a drive is hot plugged into the card:

Aug 11 16:59:05 fossel kernel: (aprobe0:ahcich0:0:0:0): Unexpected signature 0xa05f

The SATA controller on the motherboard works fine.
>How-To-Repeat:
Need a SIIG DP SATA 6Gb/s 2S1P PCIe card.

While using the ahci(4) driver, hot plug a SATA drive into the card, this should generate the error (the error is viewable from dmesg)
>Fix:
Submitted a patch that appears to work around the problem okay, but I'm not certain this this is a correct fix.

I believe this might be a RAID signature code, but I'm using the card for individual SATA drives not the RAID portion so it suits our needs.

Patch attached with submission follows:

--- ata_xpt.c.orig	2010-08-12 10:16:46.000000000 -0500
+++ ata_xpt.c	2010-08-12 10:08:29.000000000 -0500
@@ -776,7 +776,10 @@
 		    done_ccb->ataio.res.lba_mid;
 		if (bootverbose)
 			xpt_print(path, "SIGNATURE: %04x\n", sign);
-		if (sign == 0x0000 &&
+/* BEGIN VERIAM HACK! */
+/*		if (sign == 0x0000 && */
+		if ( ((sign == 0x0000) || (sign == 0xA05F)) &&
+/* END VERIAM HACK! */
 		    done_ccb->ccb_h.target_id != 15) {
 			path->device->protocol = PROTO_ATA;
 			PROBE_SET_ACTION(softc, PROBE_IDENTIFY);


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



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