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From: Alexander Motin <mav@FreeBSD.org>
Date: Fri, 19 Feb 2010 18:15:45 +0000 (UTC)
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Subject: svn commit: r204099 - stable/8/sys/dev/siis
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Author: mav
Date: Fri Feb 19 18:15:45 2010
New Revision: 204099
URL: http://svn.freebsd.org/changeset/base/204099

Log:
  MFC r200291, r203529:
  Increase Max Read Request Size for PCIe chips from 512 to 1024 bytes.
  It gives those beasts additional 10% of write bandwidth.
  Use new helper functions to do it.

Modified:
  stable/8/sys/dev/siis/siis.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)
  stable/8/sys/netinet/   (props changed)

Modified: stable/8/sys/dev/siis/siis.c
==============================================================================
--- stable/8/sys/dev/siis/siis.c	Fri Feb 19 18:07:51 2010	(r204098)
+++ stable/8/sys/dev/siis/siis.c	Fri Feb 19 18:15:45 2010	(r204099)
@@ -231,6 +231,9 @@ siis_resume(device_t dev)
 {
 	struct siis_controller *ctlr = device_get_softc(dev);
 
+	/* Set PCIe max read request size to at least 1024 bytes */
+	if (pci_get_max_read_req(dev) < 1024)
+		pci_set_max_read_req(dev, 1024);
 	/* Put controller into reset state. */
 	ctlr->gctl |= SIIS_GCTL_GRESET;
 	ATA_OUTL(ctlr->r_gmem, SIIS_GCTL, ctlr->gctl);