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);
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