Date: Sun, 14 Feb 2010 20:00:21 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r203904 - stable/8/sys/dev/ahci Message-ID: <201002142000.o1EK0L0Q071071@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: mav Date: Sun Feb 14 20:00:21 2010 New Revision: 203904 URL: http://svn.freebsd.org/changeset/base/203904 Log: MFC r203426: Disable PHY of unconnected ports when interface power management enabled. It allows to save a bit more power (about 0.5W on 2 unused ports of ICH8M). Modified: stable/8/sys/dev/ahci/ahci.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/ahci/ahci.c ============================================================================== --- stable/8/sys/dev/ahci/ahci.c Sun Feb 14 19:59:19 2010 (r203903) +++ stable/8/sys/dev/ahci/ahci.c Sun Feb 14 20:00:21 2010 (r203904) @@ -2291,7 +2291,12 @@ ahci_sata_phy_reset(device_t dev) ATA_SC_DET_IDLE | val | ((ch->pm_level > 0) ? 0 : (ATA_SC_IPM_DIS_PARTIAL | ATA_SC_IPM_DIS_SLUMBER))); DELAY(5000); - return (ahci_sata_connect(ch)); + if (!ahci_sata_connect(ch)) { + if (ch->pm_level > 0) + ATA_OUTL(ch->r_mem, AHCI_P_SCTL, ATA_SC_DET_DISABLE); + return (0); + } + return (1); } static void
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201002142000.o1EK0L0Q071071>