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From: Alexander Motin <mav@FreeBSD.org>
Date: Fri, 26 Feb 2010 10:42:46 +0000 (UTC)
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Subject: svn commit: r204354 - in head/sys: cam/ata sys
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Author: mav
Date: Fri Feb 26 10:42:46 2010
New Revision: 204354
URL: http://svn.freebsd.org/changeset/base/204354

Log:
  Make PUIS detection more strict. Previous implementation caused false
  positives on VMWare's virtual CD-ROMs.

Modified:
  head/sys/cam/ata/ata_xpt.c
  head/sys/sys/ata.h

Modified: head/sys/cam/ata/ata_xpt.c
==============================================================================
--- head/sys/cam/ata/ata_xpt.c	Fri Feb 26 10:33:48 2010	(r204353)
+++ head/sys/cam/ata/ata_xpt.c	Fri Feb 26 10:42:46 2010	(r204354)
@@ -788,11 +788,10 @@ noerror:
 		ata_btrim(ident_buf->serial, sizeof(ident_buf->serial));
 		ata_bpack(ident_buf->serial, ident_buf->serial, sizeof(ident_buf->serial));
 		/* Device may need spin-up before IDENTIFY become valid. */
-		if ((ident_buf->config & ATA_RESP_INCOMPLETE) ||
-		    ((ident_buf->support.command2 & ATA_SUPPORT_STANDBY) &&
-		     (ident_buf->enabled.command2 & ATA_SUPPORT_STANDBY) &&
-		     (ident_buf->support.command2 & ATA_SUPPORT_SPINUP) &&
-		      softc->spinup == 0)) {
+		if ((ident_buf->specconf == 0x37c8 ||
+		     ident_buf->specconf == 0x738c) &&
+		    ((ident_buf->config & ATA_RESP_INCOMPLETE) ||
+		     softc->spinup == 0)) {
 			PROBE_SET_ACTION(softc, PROBE_SPINUP);
 			xpt_release_ccb(done_ccb);
 			xpt_schedule(periph, priority);

Modified: head/sys/sys/ata.h
==============================================================================
--- head/sys/sys/ata.h	Fri Feb 26 10:33:48 2010	(r204353)
+++ head/sys/sys/ata.h	Fri Feb 26 10:42:46 2010	(r204354)
@@ -51,7 +51,7 @@ struct ata_params {
 #define ATA_RESP_INCOMPLETE             0x0004
 
 /*001*/ u_int16_t       cylinders;              /* # of cylinders */
-	u_int16_t       reserved2;
+/*002*/ u_int16_t       specconf;		/* specific configuration */
 /*003*/ u_int16_t       heads;                  /* # heads */
 	u_int16_t       obsolete4;
 	u_int16_t       obsolete5;