AMD PowerNow K7 driver written by Martin Vegiard via PR port-i386/26239.
Enabled by default on GENERIC and GENERIC_LAPTOP. Imported 1 year later... but it's here finally.
This commit is contained in:
xtraeme
parent
384a271baa
commit
c9f2b0fc40
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@ -1,4 +1,4 @@
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LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.556 $>
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LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.557 $>
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[Note: This file does not mention every change made to the NetBSD source tree.
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@ -158,3 +158,5 @@ Changes from NetBSD 3.0 to NetBSD 4.0:
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was done by UCHIYAMA Yasushi. [tsutsui 20051229]
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rtw(4): Add support for GCT Semiconductor GRF5101
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transceiver/synthesizer. [dyoung 20051229]
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i386: Add support for AMD PowerNow technology.
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Written by Martin Vegiard. [xtraeme 20051231]
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@ -1,4 +1,4 @@
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.\" $NetBSD: options.4,v 1.299 2005/12/20 18:15:30 elad Exp $
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.\" $NetBSD: options.4,v 1.300 2005/12/31 17:55:55 xtraeme Exp $
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.\"
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.\" Copyright (c) 1996
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.\" Perry E. Metzger. All rights reserved.
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@ -30,7 +30,7 @@
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\"
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.Dd December 20, 2005
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.Dd December 31, 2005
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.Os
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.Dt OPTIONS 4
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.Sh NAME
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@ -2290,6 +2290,10 @@ Allow any user to change the frequency of an
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.Tn Enhanced SpeedStep Technology
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capable
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.Tn CPU .
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.It Cd options POWERNOW_K7
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Include support for the AMD
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.Tn PowerNow! Technology
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present in AMD Athlon Mobile processors.
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.It Cd options CPURESET_DELAY=value
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Specifies the time (in millisecond) to wait before doing a hardware reset
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in the last phase of a reboot.
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@ -1,4 +1,4 @@
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# $NetBSD: GENERIC,v 1.714 2005/12/20 05:35:28 thorpej Exp $
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# $NetBSD: GENERIC,v 1.715 2005/12/31 17:55:55 xtraeme Exp $
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#
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# GENERIC machine description file
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#
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@ -22,7 +22,7 @@ include "arch/i386/conf/std.i386"
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options INCLUDE_CONFIG_FILE # embed config file in kernel binary
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#ident "GENERIC-$Revision: 1.714 $"
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#ident "GENERIC-$Revision: 1.715 $"
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maxusers 32 # estimated number of users
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@ -43,6 +43,9 @@ options USER_LDT # user-settable LDT; used by WINE
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options ENHANCED_SPEEDSTEP
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#options EST_FREQ_USERWRITE # any user can set frequency
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# AMD PowerNow! K7
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options POWERNOW_K7
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options MTRR # memory-type range register syscall support
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# doesn't work with MP just yet..
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#options PERFCTRS # performance-monitoring counters support
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@ -1,4 +1,4 @@
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# $NetBSD: GENERIC_LAPTOP,v 1.161 2005/12/20 05:35:28 thorpej Exp $
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# $NetBSD: GENERIC_LAPTOP,v 1.162 2005/12/31 17:55:55 xtraeme Exp $
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# From: NetBSD: GENERIC,v 1.414 2001/07/30 19:59:05 ad Exp
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#
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# GENERIC_LAPTOP -- GENERIC with cardbus and some USB devices enabled
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@ -8,7 +8,7 @@ include "arch/i386/conf/std.i386"
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#options INCLUDE_CONFIG_FILE # embed config file in kernel binary
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#ident "GENERIC-$Revision: 1.161 $"
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#ident "GENERIC-$Revision: 1.162 $"
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maxusers 32 # estimated number of users
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@ -27,6 +27,9 @@ options USER_LDT # user-settable LDT; used by WINE
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options ENHANCED_SPEEDSTEP
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#options EST_FREQ_USERWRITE # any user can set frequency
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# AMD PowerNow! K7
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options POWERNOW_K7
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options MTRR # memory-type range register syscall support
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#options PERFCTRS # performance-monitoring counters support
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@ -1,4 +1,4 @@
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# $NetBSD: files.i386,v 1.274 2005/12/11 02:11:50 christos Exp $
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# $NetBSD: files.i386,v 1.275 2005/12/31 17:55:55 xtraeme Exp $
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#
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# new style config file for i386 architecture
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#
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@ -64,6 +64,9 @@ defparam opt_beep.h BEEP_ONHALT_PITCH BEEP_ONHALT_PERIOD
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# Enhanced SpeedStep
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defflag ENHANCED_SPEEDSTEP
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# PowerNow K7
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defflag POWERNOW_K7
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file arch/i386/i386/autoconf.c
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file arch/i386/i386/db_dbgreg.S ddb | kstack_check_dr0
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file arch/i386/i386/db_disasm.c ddb
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@ -486,6 +489,9 @@ file arch/i386/bios/vesa_text.c vesatext
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file arch/i386/i386/est.c enhanced_speedstep
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defflag opt_est.h EST_FREQ_USERWRITE
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# AMD PowerNow K7
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file arch/i386/i386/powernow_k7.c powernow_k7
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# Atheros 5210/5211/5212 Hardware Abstraction Layer (HAL)
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object /athhal-i386-elf.hal.o ath
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@ -1,4 +1,4 @@
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/* $NetBSD: est.c,v 1.13 2005/12/31 09:52:46 xtraeme Exp $ */
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/* $NetBSD: est.c,v 1.14 2005/12/31 17:55:55 xtraeme Exp $ */
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/*
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* Copyright (c) 2003 Michael Eriksson.
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* All rights reserved.
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@ -84,7 +84,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: est.c,v 1.13 2005/12/31 09:52:46 xtraeme Exp $");
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__KERNEL_RCSID(0, "$NetBSD: est.c,v 1.14 2005/12/31 17:55:55 xtraeme Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -353,9 +353,6 @@ static const struct fqlist pentium_m_dothan[] = {
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ENTRY("2.00", pentium_m_n755),
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ENTRY("2.10", pentium_m_n765),
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ENTRY("2.13", pentium_m_n770),
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ENTRY("1.00", pentium_m_n723),
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ENTRY("1.10", pentium_m_n733),
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ENTRY("1.40", pentium_m_n738),
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};
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#undef ENTRY
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@ -1,4 +1,4 @@
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/* $NetBSD: identcpu.c,v 1.24 2005/12/26 19:23:59 perry Exp $ */
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/* $NetBSD: identcpu.c,v 1.25 2005/12/31 17:55:55 xtraeme Exp $ */
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/*-
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* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
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@ -37,10 +37,11 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.24 2005/12/26 19:23:59 perry Exp $");
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__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.25 2005/12/31 17:55:55 xtraeme Exp $");
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#include "opt_cputype.h"
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#include "opt_enhanced_speedstep.h"
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#include "opt_powernow_k7.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -130,6 +131,7 @@ static const char * const amd_brand[] = {
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};
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u_int cpu_serial[3];
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u_int amd_powernow_probe(struct cpu_info *);
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char cpu_brand_string[49];
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static char amd_brand_name[48];
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@ -913,6 +915,20 @@ amd_family5_setup(struct cpu_info *ci)
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}
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}
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u_int
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amd_powernow_probe(struct cpu_info *ci)
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{
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u_int32_t eax, ebx, ecx, edx;
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CPUID(0x80000007, eax, ebx, ecx, edx);
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/* checking for Freq ID control (FID) and Voltage ID control (VID) */
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if ((edx & (0x2 | 0x4)) > 0)
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return 1;
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return 0;
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}
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/*
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* Transmeta Crusoe LongRun Support by Tamotsu Hattori.
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* Port from FreeBSD-current(August, 2001) to NetBSD by tshiozak.
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@ -1430,4 +1446,10 @@ identifycpu(struct cpu_info *ci)
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}
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#endif /* ENHANCED_SPEEDSTEP */
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#ifdef POWERNOW_K7
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if (amd_powernow_probe (ci)) {
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pnowk7_init(ci);
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}
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#endif /* POWERNOW_K7 */
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}
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@ -0,0 +1,338 @@
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/* $NetBSD: powernow_k7.c,v 1.1 2005/12/31 17:55:55 xtraeme Exp $ */
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/*
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* Copyright (c) 2004 Martin Végiard.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* AMD PowerNow! K7 driver */
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/* Sysctl related code was adapted from NetBSD's i386/est.c for compatibility */
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: powernow_k7.c,v 1.1 2005/12/31 17:55:55 xtraeme Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/sysctl.h>
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#include <dev/isa/isareg.h>
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#include <machine/cpu.h>
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#include <machine/isa_machdep.h>
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#define BIOS_START 0xe0000
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#define BIOS_END 0x20000
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#define BIOS_LEN BIOS_END - BIOS_START
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#define MSR_K7_CTL 0xC0010041
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#define CTL_SET_FID 0x0000000000010000ULL
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#define CTL_SET_VID 0x0000000000020000ULL
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#define cpufreq(x) fsb * fid_codes[x] / 10
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struct psb_s {
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char signature[10]; /* AMDK7PNOW! */
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uint8_t version;
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uint8_t flags;
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uint16_t ttime; /* Min Settling time */
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uint8_t reserved;
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uint8_t n_pst;
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};
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struct pst_s {
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cpuid_t cpuid;
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uint8_t fsb; /* Front Side Bus frequency (Mhz) */
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uint8_t fid; /* Max Frequency code */
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uint8_t vid; /* Max Voltage code */
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uint8_t n_states; /* Number of states */
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};
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struct state_s {
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uint8_t fid; /* Frequency code */
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uint8_t vid; /* Voltage code */
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};
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struct freq_table_s {
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unsigned int frequency;
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struct state_s *state;
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};
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/* Taken from powernow-k7.c/Linux by Dave Jones */
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static int fid_codes[32] = {
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110, 115, 120, 125, 50, 55, 60, 65,
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70, 75, 80, 85, 90, 95, 100, 105,
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30, 190, 40, 200, 130, 135, 140, 210,
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150, 225, 160, 165, 170, 180, -1, -1
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};
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/* Static variables */
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static unsigned int fsb;
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static unsigned int cur_freq;
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static unsigned int ttime;
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static unsigned int n_states;
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static struct freq_table_s *freq_table;
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static int powernow_node_target, powernow_node_current;
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/* Prototypes */
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struct state_s *pnowk7_getstates(cpuid_t cpuid);
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int pnowk7_setstate(unsigned int freq);
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static int powernow_sysctl_helper(SYSCTLFN_ARGS);
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static int
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powernow_sysctl_helper(SYSCTLFN_ARGS)
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{
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struct sysctlnode node;
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int fq, oldfq, error;
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if (freq_table == NULL)
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return (EOPNOTSUPP);
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node = *rnode;
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node.sysctl_data = &fq;
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oldfq = 0;
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if (rnode->sysctl_num == powernow_node_target)
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fq = oldfq = cur_freq;
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else if (rnode->sysctl_num == powernow_node_current)
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fq = cur_freq;
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else
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return (EOPNOTSUPP);
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error = sysctl_lookup(SYSCTLFN_CALL(&node));
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if (error || newp == NULL)
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return (error);
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/* support writing to ...frequency.target */
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if (rnode->sysctl_num == powernow_node_target && fq != oldfq) {
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if (pnowk7_setstate(fq) == 0)
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{
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cur_freq = fq;
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} else
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aprint_normal("\nInvalid CPU frequency request\n");
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}
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return (0);
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}
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struct state_s *
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pnowk7_getstates(cpuid_t cpuid)
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{
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unsigned int i, j;
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char *ptr;
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struct psb_s *psb;
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struct pst_s *pst;
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/*
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* Look in the 0xe0000 - 0x20000 physical address
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* range for the pst tables; 16 byte blocks
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*/
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ptr = (char *)ISA_HOLE_VADDR(BIOS_START);
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for (i = 0; i < BIOS_LEN; i += 16, ptr += 16) {
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if (memcmp(ptr, "AMDK7PNOW!", 10) == 0)
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{
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psb = (struct psb_s *) ptr;
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ptr += sizeof(struct psb_s);
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ttime = psb->ttime;
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/* Only this version is supported */
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if (psb->version != 0x12)
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return 0;
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/* Find the right PST */
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for (j = 0; j < psb->n_pst; j++) {
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pst = (struct pst_s *) ptr;
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ptr += sizeof(struct pst_s);
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/* Use the first PST with matching CPUID */
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if ((cpuid == pst->cpuid) ||
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(cpuid == (pst->cpuid - 0x100)))
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/*
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* XXX
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* some braindead BIOS seems to expect
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* signature 0x780 from Athlon. Let's try to
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* subtract 0x100 from the BIOS supplied values
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* to fix.
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*/
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{
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/*
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* XXX
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* I need more info on this.
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* For now, let's just ignore it
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*/
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if ((cpuid & 0xFF) == 0x60)
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return 0;
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fsb = pst->fsb;
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n_states = pst->n_states;
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return (struct state_s *) ptr;
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} else
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ptr += sizeof(struct state_s) *
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pst->n_states;
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}
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/* aprint_normal("No match was found for your CPUID\n"); */
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return 0;
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}
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}
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/* aprint_normal("Power state table not found\n"); */
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return 0;
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}
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int
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pnowk7_setstate(unsigned int freq)
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{
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unsigned int i;
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u_int32_t sgtc, vid, fid;
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u_int64_t ctl;
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vid = fid = 0;
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for (i = 0; i < n_states; i++) {
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/* Do we know how to set that frequency? */
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if (freq_table[i].frequency == freq)
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{
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fid = freq_table[i].state->fid;
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vid = freq_table[i].state->vid;
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}
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}
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if (fid == 0 || vid == 0)
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return -1;
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/* Get CTL and only modify fid/vid/sgtc */
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ctl = rdmsr(MSR_K7_CTL);
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/* FID */
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ctl &= 0xFFFFFFFFFFFFFF00ULL;
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ctl |= fid;
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/* VID */
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ctl &= 0xFFFFFFFFFFFF00FFULL;
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ctl |= vid << 8;
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/* SGTC */
|
||||
if ((sgtc = ttime * 100) < 10000) sgtc = 10000;
|
||||
ctl &= 0xFFF00000FFFFFFFFULL;
|
||||
ctl |= (u_int64_t)sgtc << 32;
|
||||
|
||||
if (cur_freq > freq) {
|
||||
wrmsr(MSR_K7_CTL, ctl | CTL_SET_FID);
|
||||
wrmsr(MSR_K7_CTL, ctl | CTL_SET_VID);
|
||||
} else {
|
||||
wrmsr(MSR_K7_CTL, ctl | CTL_SET_VID);
|
||||
wrmsr(MSR_K7_CTL, ctl | CTL_SET_FID);
|
||||
}
|
||||
|
||||
ctl = rdmsr(MSR_K7_CTL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
pnowk7_init(struct cpu_info *ci)
|
||||
{
|
||||
int rc;
|
||||
unsigned int i, freq_names_len, len = 0;
|
||||
char *freq_names, *cpuname;
|
||||
const struct sysctlnode *node, *pnownode, *freqnode;
|
||||
struct state_s *s = pnowk7_getstates(ci->ci_signature);
|
||||
|
||||
cpuname = ci->ci_dev->dv_xname;
|
||||
|
||||
if (s == 0) {
|
||||
/* aprint_normal("AMD PowerNow not supported\n"); */
|
||||
return;
|
||||
}
|
||||
|
||||
freq_names_len = n_states * (sizeof("9999 ")-1) + 1;
|
||||
freq_names = malloc(freq_names_len, M_SYSCTLDATA, M_WAITOK);
|
||||
|
||||
freq_table = malloc(sizeof(struct freq_table_s) * n_states, \
|
||||
M_TEMP, M_WAITOK);
|
||||
|
||||
|
||||
for (i = 0; i < n_states; i++, s++) {
|
||||
freq_table[i].frequency = cpufreq(s->fid);
|
||||
freq_table[i].state = s;
|
||||
|
||||
len += snprintf(freq_names + len, freq_names_len - len, "%d%s",
|
||||
freq_table[i].frequency, i < n_states - 1 ? " " : "");
|
||||
}
|
||||
|
||||
/* On bootup the frequency should be at it's max */
|
||||
cur_freq = freq_table[i-1].frequency;
|
||||
|
||||
/* Create sysctl machdep.powernow.frequency. */
|
||||
if ((rc = sysctl_createv(NULL, 0, NULL, &node,
|
||||
CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", NULL,
|
||||
NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL)) != 0)
|
||||
goto err;
|
||||
|
||||
if ((rc = sysctl_createv(NULL, 0, &node, &pnownode,
|
||||
0, CTLTYPE_NODE, "powernow", NULL,
|
||||
NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0)
|
||||
goto err;
|
||||
|
||||
if ((rc = sysctl_createv(NULL, 0, &pnownode, &freqnode,
|
||||
0, CTLTYPE_NODE, "frequency", NULL,
|
||||
NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0)
|
||||
goto err;
|
||||
|
||||
if ((rc = sysctl_createv(NULL, 0, &freqnode, &node,
|
||||
CTLFLAG_READWRITE, CTLTYPE_INT, "target", NULL,
|
||||
powernow_sysctl_helper, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0)
|
||||
goto err;
|
||||
powernow_node_target = node->sysctl_num;
|
||||
|
||||
if ((rc = sysctl_createv(NULL, 0, &freqnode, &node,
|
||||
0, CTLTYPE_INT, "current", NULL,
|
||||
powernow_sysctl_helper, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0)
|
||||
goto err;
|
||||
powernow_node_current = node->sysctl_num;
|
||||
|
||||
if ((rc = sysctl_createv(NULL, 0, &freqnode, &node,
|
||||
0, CTLTYPE_STRING, "available", NULL,
|
||||
NULL, 0, freq_names, freq_names_len, CTL_CREATE, CTL_EOL)) != 0)
|
||||
goto err;
|
||||
|
||||
/* aprint_normal("AMD PowerNow supported current frequency : %d Mhz\n", \
|
||||
cur_freq); */
|
||||
aprint_normal("%s: AMD PowerNow! Technology supported\n", cpuname);
|
||||
aprint_normal("%s: available frequencies (Mhz): %s\n",
|
||||
cpuname, freq_names);
|
||||
return;
|
||||
err:
|
||||
aprint_normal("%s: sysctl_createv failed (rc = %d)\n", __func__, rc);
|
||||
}
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: cpu.h,v 1.120 2005/12/26 19:23:59 perry Exp $ */
|
||||
/* $NetBSD: cpu.h,v 1.121 2005/12/31 17:55:55 xtraeme Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
|
|
@ -425,6 +425,9 @@ void x86_bus_space_mallocok(void);
|
|||
/* est.c */
|
||||
void est_init(struct cpu_info *);
|
||||
|
||||
/* pnow_k7.c */
|
||||
void pnowk7_init(struct cpu_info *);
|
||||
|
||||
#endif /* _KERNEL */
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Reference in New Issue