svn commit: r196777 - head/sys/dev/ahci
Alexander Motin
mav at FreeBSD.org
Thu Sep 3 12:37:18 UTC 2009
Author: mav
Date: Thu Sep 3 12:37:17 2009
New Revision: 196777
URL: http://svn.freebsd.org/changeset/base/196777
Log:
ATI SB600 can't handle 256 sectors transfers with FPDMA (NCQ).
MFC after: 3 days
Modified:
head/sys/dev/ahci/ahci.c
Modified: head/sys/dev/ahci/ahci.c
==============================================================================
--- head/sys/dev/ahci/ahci.c Thu Sep 3 10:06:37 2009 (r196776)
+++ head/sys/dev/ahci/ahci.c Thu Sep 3 12:37:17 2009 (r196777)
@@ -1942,6 +1942,9 @@ ahciaction(struct cam_sim *sim, union cc
cpi->protocol = PROTO_ATA;
cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
cpi->maxio = MAXPHYS;
+ /* ATI SB600 can't handle 256 sectors with FPDMA (NCQ). */
+ if (pci_get_devid(device_get_parent(dev)) == 0x43801002)
+ cpi->maxio = min(cpi->maxio, 255 * 512);
cpi->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
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