Date: Thu, 11 Nov 2010 14:13:57 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@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: r215123 - stable/8/sys/powerpc/aim Message-ID: <201011111413.oABEDvvT069970@svn.freebsd.org>
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Author: nwhitehorn Date: Thu Nov 11 14:13:56 2010 New Revision: 215123 URL: http://svn.freebsd.org/changeset/base/215123 Log: MFC r198588: Turn off Altivec data-stream prefetching before going into power-save mode on those CPUs that need it. Modified: stable/8/sys/powerpc/aim/machdep.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) Modified: stable/8/sys/powerpc/aim/machdep.c ============================================================================== --- stable/8/sys/powerpc/aim/machdep.c Thu Nov 11 13:48:48 2010 (r215122) +++ stable/8/sys/powerpc/aim/machdep.c Thu Nov 11 14:13:56 2010 (r215123) @@ -614,8 +614,10 @@ void cpu_idle(int busy) { uint32_t msr; + uint16_t vers; msr = mfmsr(); + vers = mfpvr() >> 16; #ifdef INVARIANTS if ((msr & PSL_EE) != PSL_EE) { @@ -625,9 +627,25 @@ cpu_idle(int busy) } #endif if (powerpc_pow_enabled) { - powerpc_sync(); - mtmsr(msr | PSL_POW); - isync(); + switch (vers) { + case IBM970: + case IBM970FX: + case IBM970MP: + case MPC7447A: + case MPC7448: + case MPC7450: + case MPC7455: + case MPC7457: + __asm __volatile("\ + dssall; sync; mtmsr %0; isync" + :: "r"(msr | PSL_POW)); + break; + default: + powerpc_sync(); + mtmsr(msr | PSL_POW); + isync(); + break; + } } }
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