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From: Andriy Gapon <avg@FreeBSD.org>
Date: Wed, 14 Dec 2016 16:30:53 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r310074 - stable/10/sys/dev/firewire
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Author: avg
Date: Wed Dec 14 16:30:53 2016
New Revision: 310074
URL: https://svnweb.freebsd.org/changeset/base/310074

Log:
  MFC r309092: fwohci: report whether PhysicalUpperBound register is implemented

Modified:
  stable/10/sys/dev/firewire/fwohci.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/dev/firewire/fwohci.c
==============================================================================
--- stable/10/sys/dev/firewire/fwohci.c	Wed Dec 14 16:30:47 2016	(r310073)
+++ stable/10/sys/dev/firewire/fwohci.c	Wed Dec 14 16:30:53 2016	(r310074)
@@ -1874,6 +1874,16 @@ fwohci_intr_core(struct fwohci_softc *sc
 			OWRITE(sc, OHCI_PREQLO, 0xffffffff);
 			/* 0 to 4GB region */
 			OWRITE(sc, OHCI_PREQUPPER, 0x10000);
+			if (OREAD(sc, OHCI_PREQUPPER) !=
+			    (prequpper & 0xffffffff)) {
+				device_printf(fc->dev,
+				   "PhysicalUpperBound register is not "
+				   "implemented.  Physical memory access "
+				   "is limited to the first 4GB\n");
+				device_printf(fc->dev,
+				   "PhysicalUpperBound = 0x%08x\n",
+				    OREAD(sc, OHCI_PREQUPPER));
+			}
 		}
 		/* Set ATRetries register */
 		OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff);