Date: Fri, 8 Aug 2008 16:26:53 +0000 (UTC) From: Stanislav Sedov <stas@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/share/man/man4 Makefile cpuctl.4 src/sys/amd64/amd64 support.S src/sys/amd64/conf NOTES src/sys/amd64/include cpufunc.h specialreg.h src/sys/conf files.amd64 files.i386 src/sys/dev/cpuctl cpuctl.c ... Message-ID: <200808081631.m78GVG9i088754@repoman.freebsd.org>
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stas 2008-08-08 16:26:53 UTC FreeBSD src repository Modified files: share/man/man4 Makefile sys/amd64/amd64 support.S sys/amd64/conf NOTES sys/amd64/include cpufunc.h specialreg.h sys/conf files.amd64 files.i386 sys/i386/conf NOTES sys/i386/i386 support.s sys/i386/include cpufunc.h specialreg.h sys/modules Makefile sys/sys priv.h usr.sbin Makefile Added files: share/man/man4 cpuctl.4 sys/dev/cpuctl cpuctl.c sys/modules/cpuctl Makefile sys/sys cpuctl.h usr.sbin/cpucontrol Makefile amd.c amd.h cpucontrol.8 cpucontrol.c cpucontrol.h intel.c intel.h Log: SVN rev 181430 on 2008-08-08 16:26:53Z by stas - Add cpuctl(4) pseudo-device driver to provide access to some low-level features of CPUs like reading/writing machine-specific registers, retrieving cpuid data, and updating microcode. - Add cpucontrol(8) utility, that provides userland access to the features of cpuctl(4). - Add subsequent manpages. The cpuctl(4) device operates as follows. The pseudo-device node cpuctlX is created for each cpu present in the systems. The pseudo-device minor number corresponds to the cpu number in the system. The cpuctl(4) pseudo- device allows a number of ioctl to be preformed, namely RDMSR/WRMSR/CPUID and UPDATE. The first pair alows the caller to read/write machine-specific registers from the correspondent CPU. cpuid data could be retrieved using the CPUID call, and microcode updates are applied via UPDATE. The permissions are inforced based on the pseudo-device file permissions. RDMSR/CPUID will be allowed when the caller has read access to the device node, while WRMSR/UPDATE will be granted only when the node is opened for writing. There're also a number of priv(9) checks. The cpucontrol(8) utility is intened to provide userland access to the cpuctl(4) device features. The utility also allows one to apply cpu microcode updates. Currently only Intel and AMD cpus are supported and were tested. Approved by: kib Reviewed by: rpaulo, cokane, Peter Jeremy MFC after: 1 month Revision Changes Path 1.423 +2 -0 src/share/man/man4/Makefile 1.1 +146 -0 src/share/man/man4/cpuctl.4 (new) 1.129 +44 -0 src/sys/amd64/amd64/support.S 1.82 +6 -0 src/sys/amd64/conf/NOTES 1.150 +5 -0 src/sys/amd64/include/cpufunc.h 1.46 +7 -0 src/sys/amd64/include/specialreg.h 1.122 +1 -0 src/sys/conf/files.amd64 1.601 +1 -0 src/sys/conf/files.i386 1.1 +446 -0 src/sys/dev/cpuctl/cpuctl.c (new) 1.1260 +6 -0 src/sys/i386/conf/NOTES 1.120 +49 -0 src/sys/i386/i386/support.s 1.147 +5 -0 src/sys/i386/include/cpufunc.h 1.45 +7 -0 src/sys/i386/include/specialreg.h 1.582 +3 -0 src/sys/modules/Makefile 1.1 +8 -0 src/sys/modules/cpuctl/Makefile (new) 1.1 +52 -0 src/sys/sys/cpuctl.h (new) 1.21 +7 -1 src/sys/sys/priv.h 1.391 +3 -0 src/usr.sbin/Makefile 1.1 +9 -0 src/usr.sbin/cpucontrol/Makefile (new) 1.1 +183 -0 src/usr.sbin/cpucontrol/amd.c (new) 1.1 +49 -0 src/usr.sbin/cpucontrol/amd.h (new) 1.1 +116 -0 src/usr.sbin/cpucontrol/cpucontrol.8 (new) 1.1 +362 -0 src/usr.sbin/cpucontrol/cpucontrol.c (new) 1.1 +56 -0 src/usr.sbin/cpucontrol/cpucontrol.h (new) 1.1 +285 -0 src/usr.sbin/cpucontrol/intel.c (new) 1.1 +70 -0 src/usr.sbin/cpucontrol/intel.h (new)
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