Remove all initialization of obsolete ci_divisor_recip in
mips struct cpu_info and related macroes. The member was prepared for a hack in MD microtime(9) implementation but it has been superseded by MI timecounter(9).
This commit is contained in:
tsutsui
parent
46540aaf0e
commit
40f5425d58
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@ -1,4 +1,4 @@
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/* $NetBSD: algor_p4032_intr.c,v 1.19 2008/04/28 20:23:10 martin Exp $ */
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/* $NetBSD: algor_p4032_intr.c,v 1.20 2008/05/26 15:59:29 tsutsui Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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@ -38,7 +38,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: algor_p4032_intr.c,v 1.19 2008/04/28 20:23:10 martin Exp $");
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__KERNEL_RCSID(0, "$NetBSD: algor_p4032_intr.c,v 1.20 2008/05/26 15:59:29 tsutsui Exp $");
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#include "opt_ddb.h"
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@ -330,7 +330,6 @@ algor_p4032_cal_timer(bus_space_tag_t st, bus_space_handle_t sh)
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/* XXX assume CPU_MIPS_DOUBLE_COUNT */
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curcpu()->ci_cycles_per_hz /= 2;
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curcpu()->ci_divisor_delay /= 2;
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MIPS_SET_CI_RECIPROCAL(curcpu());
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printf("Timer calibration: %lu cycles/sec [(%lu, %lu) * 16]\n",
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cps, ctrdiff[2], ctrdiff[3]);
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@ -1,4 +1,4 @@
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/* $NetBSD: algor_p5064_intr.c,v 1.22 2008/04/28 20:23:10 martin Exp $ */
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/* $NetBSD: algor_p5064_intr.c,v 1.23 2008/05/26 15:59:29 tsutsui Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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@ -38,7 +38,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: algor_p5064_intr.c,v 1.22 2008/04/28 20:23:10 martin Exp $");
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__KERNEL_RCSID(0, "$NetBSD: algor_p5064_intr.c,v 1.23 2008/05/26 15:59:29 tsutsui Exp $");
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#include "opt_ddb.h"
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@ -423,7 +423,6 @@ algor_p5064_cal_timer(bus_space_tag_t st, bus_space_handle_t sh)
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/* XXX assume CPU_MIPS_DOUBLE_COUNT */
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curcpu()->ci_cycles_per_hz /= 2;
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curcpu()->ci_divisor_delay /= 2;
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MIPS_SET_CI_RECIPROCAL(curcpu());
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printf("Timer calibration: %lu cycles/sec [(%lu, %lu) * 16]\n",
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cps, ctrdiff[2], ctrdiff[3]);
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@ -1,4 +1,4 @@
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/* $NetBSD: algor_p6032_intr.c,v 1.15 2008/04/28 20:23:10 martin Exp $ */
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/* $NetBSD: algor_p6032_intr.c,v 1.16 2008/05/26 15:59:29 tsutsui Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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@ -37,7 +37,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: algor_p6032_intr.c,v 1.15 2008/04/28 20:23:10 martin Exp $");
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__KERNEL_RCSID(0, "$NetBSD: algor_p6032_intr.c,v 1.16 2008/05/26 15:59:29 tsutsui Exp $");
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#include "opt_ddb.h"
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@ -291,7 +291,6 @@ algor_p6032_cal_timer(bus_space_tag_t st, bus_space_handle_t sh)
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/* XXX assume CPU_MIPS_DOUBLE_COUNT */
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curcpu()->ci_cycles_per_hz /= 2;
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curcpu()->ci_divisor_delay /= 2;
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MIPS_SET_CI_RECIPROCAL(curcpu());
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printf("Timer calibration: %lu cycles/sec [(%lu, %lu) * 16]\n",
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cps, ctrdiff[2], ctrdiff[3]);
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@ -1,4 +1,4 @@
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/* $NetBSD: machdep.c,v 1.110 2008/01/09 20:38:34 wiz Exp $ */
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/* $NetBSD: machdep.c,v 1.111 2008/05/26 15:59:29 tsutsui Exp $ */
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/* $OpenBSD: machdep.c,v 1.36 1999/05/22 21:22:19 weingart Exp $ */
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/*
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@ -78,7 +78,7 @@
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/* from: Utah Hdr: machdep.c 1.63 91/04/24 */
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.110 2008/01/09 20:38:34 wiz Exp $");
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.111 2008/05/26 15:59:29 tsutsui Exp $");
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#include "fs_mfs.h"
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#include "opt_ddb.h"
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@ -402,7 +402,6 @@ mach_init(int argc, char *argv[], u_int bim, void *bip)
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curcpu()->ci_cycles_per_hz /= 2;
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curcpu()->ci_divisor_delay /= 2;
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}
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MIPS_SET_CI_RECIPROCAL(curcpu());
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sprintf(cpu_model, "%s %s%s",
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platform->vendor, platform->model, platform->variant);
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@ -1,4 +1,4 @@
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/* $NetBSD: machdep.c,v 1.96 2008/05/14 13:29:27 tsutsui Exp $ */
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/* $NetBSD: machdep.c,v 1.97 2008/05/26 15:59:29 tsutsui Exp $ */
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/*-
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* Copyright (c) 2006 Izumi Tsutsui. All rights reserved.
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@ -50,7 +50,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.96 2008/05/14 13:29:27 tsutsui Exp $");
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.97 2008/05/26 15:59:29 tsutsui Exp $");
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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@ -253,7 +253,6 @@ mach_init(unsigned int memsize, u_int bim, char *bip)
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/* all models have Rm5200, which is CPU_MIPS_DOUBLE_COUNT */
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curcpu()->ci_cycles_per_hz /= 2;
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curcpu()->ci_divisor_delay /= 2;
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MIPS_SET_CI_RECIPROCAL(curcpu());
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physmem = btoc(memsize - MIPS_KSEG0_START);
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@ -1,4 +1,4 @@
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/* $NetBSD: machdep.c,v 1.4 2008/01/09 20:38:35 wiz Exp $ */
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/* $NetBSD: machdep.c,v 1.5 2008/05/26 15:59:29 tsutsui Exp $ */
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/*-
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* Copyright (c) 2007 Ruslan Ermilov and Vsevolod Lobko.
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@ -107,7 +107,7 @@
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.4 2008/01/09 20:38:35 wiz Exp $");
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.5 2008/05/26 15:59:29 tsutsui Exp $");
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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@ -199,7 +199,6 @@ adm5120_setcpufreq(void)
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curcpu()->ci_cpu_freq = freq;
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curcpu()->ci_cycles_per_hz = (freq + hz / 2) / hz / 2;
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curcpu()->ci_divisor_delay = ((freq + 500000) / 1000000) / 2;
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MIPS_SET_CI_RECIPROCAL(curcpu());
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}
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void mach_init(int, char **, void *, void *); /* XXX */
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@ -1,4 +1,4 @@
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/* $NetBSD: machdep.c,v 1.11 2008/03/08 05:05:25 imp Exp $ */
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/* $NetBSD: machdep.c,v 1.12 2008/05/26 15:59:29 tsutsui Exp $ */
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/*
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* Copyright (c) 2006 Urbana-Champaign Independent Media Center.
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@ -147,7 +147,7 @@
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.11 2008/03/08 05:05:25 imp Exp $");
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.12 2008/05/26 15:59:29 tsutsui Exp $");
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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@ -213,9 +213,8 @@ cal_timer(void)
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curcpu()->ci_cycles_per_hz = (cntfreq + hz / 2) / hz;
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/* XXX: i don't understand this logic, it was borrowed from Malta */
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/* Compute number of cycles per 1us (1/MHz). 0.5MHz is for roundup. */
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curcpu()->ci_divisor_delay = ((cntfreq + 500000) / 1000000);
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MIPS_SET_CI_RECIPROCAL(curcpu());
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}
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void
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@ -1,4 +1,4 @@
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/* $NetBSD: yamon.c,v 1.10 2008/01/09 20:38:35 wiz Exp $ */
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/* $NetBSD: yamon.c,v 1.11 2008/05/26 15:59:29 tsutsui Exp $ */
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/*
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* Copyright 2002 Wasabi Systems, Inc.
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@ -38,7 +38,7 @@
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/* XXX move to arch/mips/yamon/yamon.c or similar? */
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: yamon.c,v 1.10 2008/01/09 20:38:35 wiz Exp $");
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__KERNEL_RCSID(0, "$NetBSD: yamon.c,v 1.11 2008/05/26 15:59:29 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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@ -153,7 +153,6 @@ yamon_setcpufreq(int force)
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curcpu()->ci_cycles_per_hz /= 2;
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curcpu()->ci_divisor_delay /= 2;
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}
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MIPS_SET_CI_RECIPROCAL(curcpu());
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return ret;
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: malta_intr.c,v 1.18 2008/01/09 20:38:35 wiz Exp $ */
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/* $NetBSD: malta_intr.c,v 1.19 2008/05/26 15:59:29 tsutsui Exp $ */
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/*
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* Copyright 2001, 2002 Wasabi Systems, Inc.
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@ -40,7 +40,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: malta_intr.c,v 1.18 2008/01/09 20:38:35 wiz Exp $");
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__KERNEL_RCSID(0, "$NetBSD: malta_intr.c,v 1.19 2008/05/26 15:59:29 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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@ -193,10 +193,9 @@ malta_cal_timer(bus_space_tag_t st, bus_space_handle_t sh)
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/* Compute the number of ticks for hz. */
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curcpu()->ci_cycles_per_hz = (curcpu()->ci_cpu_freq + hz / 2) / hz;
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/* Compute the delay divisor and reciprocal. */
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/* Compute the delay divisor. */
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curcpu()->ci_divisor_delay =
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((curcpu()->ci_cpu_freq + 500000) / 1000000);
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MIPS_SET_CI_RECIPROCAL(curcpu());
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/*
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* Get correct cpu frequency if the CPU runs at twice the
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@ -1,4 +1,4 @@
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/* $NetBSD: machdep.c,v 1.12 2008/04/28 20:23:18 martin Exp $ */
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/* $NetBSD: machdep.c,v 1.13 2008/05/26 15:59:29 tsutsui Exp $ */
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/*-
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* Copyright (c) 2001, 2004, 2005 The NetBSD Foundation, Inc.
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@ -27,7 +27,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.12 2008/04/28 20:23:18 martin Exp $");
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.13 2008/05/26 15:59:29 tsutsui Exp $");
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#include "opt_ddb.h"
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@ -153,7 +153,6 @@ mach_init(int argc, char *argv[], struct bootinfo *bi)
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curcpu()->ci_cycles_per_hz /= 2;
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curcpu()->ci_divisor_delay /= 2;
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}
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MIPS_SET_CI_RECIPROCAL(curcpu());
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/* Load memory to UVM */
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for (i = 1; i < mem_cluster_cnt; i++) {
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@ -1,4 +1,4 @@
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/* $NetBSD: au_timer.c,v 1.8 2008/01/09 20:38:35 wiz Exp $ */
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/* $NetBSD: au_timer.c,v 1.9 2008/05/26 15:59:30 tsutsui Exp $ */
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/*
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* Copyright 2002 Wasabi Systems, Inc.
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@ -36,7 +36,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: au_timer.c,v 1.8 2008/01/09 20:38:35 wiz Exp $");
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__KERNEL_RCSID(0, "$NetBSD: au_timer.c,v 1.9 2008/05/26 15:59:30 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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@ -118,24 +118,6 @@ au_cal_timers(bus_space_tag_t st, bus_space_handle_t sh)
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curcpu()->ci_divisor_delay =
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((curcpu()->ci_cpu_freq + 500000) / 1000000);
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/*
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* To implement a more accurate microtime using the CP0 COUNT
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* register we need to divide that register by the number of
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* cycles per MHz. But...
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*
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* DIV and DIVU are expensive on MIPS (eg 75 clocks on the
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* R4000). MULT and MULTU are only 12 clocks on the same CPU.
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* On the SB1 these appear to be 40-72 clocks for DIV/DIVU and 3
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* clocks for MUL/MULTU.
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*
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* The strategy we use to to calculate the reciprocal of cycles
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* per MHz, scaled by 1<<32. Then we can simply issue a MULTU
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* and pluck of the HI register and have the results of the
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* division.
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*/
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curcpu()->ci_divisor_recip =
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0x100000000ULL / curcpu()->ci_divisor_delay;
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/*
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* Get correct cpu frequency if the CPU runs at twice the
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* external/cp0-count frequency.
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@ -1,4 +1,4 @@
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/* $NetBSD: cpu.h,v 1.89 2008/02/27 18:26:16 xtraeme Exp $ */
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/* $NetBSD: cpu.h,v 1.90 2008/05/26 15:59:29 tsutsui Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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@ -58,8 +58,7 @@ struct cpu_info {
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u_long ci_cpu_freq; /* CPU frequency */
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u_long ci_cycles_per_hz; /* CPU freq / hz */
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u_long ci_divisor_delay; /* for delay/DELAY */
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u_long ci_divisor_recip; /* scaled reciprocal of previous;
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see below */
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u_long ci_divisor_recip; /* unused, for obsolete microtime(9) */
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struct lwp *ci_curlwp; /* currently running lwp */
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struct lwp *ci_fpcurlwp; /* the current FPU owner */
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int ci_want_resched; /* user preemption pending */
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@ -72,28 +71,6 @@ struct cpu_info {
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#define CPU_INFO_FOREACH(cii, ci) \
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(void)(cii), ci = &cpu_info_store; ci != NULL; ci = ci->ci_next
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/*
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* To implement a more accurate microtime using the CP0 COUNT register
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* we need to divide that register by the number of cycles per MHz.
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* But...
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*
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* DIV and DIVU are expensive on MIPS (eg 75 clocks on the R4000). MULT
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* and MULTU are only 12 clocks on the same CPU.
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*
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* The strategy we use is to calculate the reciprocal of cycles per MHz,
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* scaled by 1<<32. Then we can simply issue a MULTU and pluck of the
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* HI register and have the results of the division.
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*/
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#define MIPS_SET_CI_RECIPROCAL(cpu) \
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do { \
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KASSERT((cpu)->ci_divisor_delay != 0); \
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(cpu)->ci_divisor_recip = 0x100000000ULL / (cpu)->ci_divisor_delay; \
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} while (0)
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#define MIPS_COUNT_TO_MHZ(cpu, count, res) \
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__asm volatile("multu %1,%2 ; mfhi %0" \
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: "=r"((res)) : "r"((count)), "r"((cpu)->ci_divisor_recip))
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#endif /* !_LOCORE */
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#endif /* _KERNEL */
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@ -1,4 +1,4 @@
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/* $NetBSD: cpu.c,v 1.17 2008/01/09 20:38:36 wiz Exp $ */
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/* $NetBSD: cpu.c,v 1.18 2008/05/26 15:59:30 tsutsui Exp $ */
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/*
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* Copyright 2000, 2001
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@ -33,7 +33,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.17 2008/01/09 20:38:36 wiz Exp $");
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__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.18 2008/05/26 15:59:30 tsutsui Exp $");
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#include "opt_multiprocessor.h"
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@ -117,11 +117,10 @@ cpu_attach(struct device *parent, struct device *self, void *aux)
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}
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curcpu()->ci_cpu_freq = 50000000 * plldiv;
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/* Compute the delay divisor and reciprocal. */
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curcpu()->ci_divisor_delay = curcpu()->ci_cpu_freq / 1000000;
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MIPS_SET_CI_RECIPROCAL(curcpu());
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/* Compute the delay divisor. */
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curcpu()->ci_divisor_delay = (curcpu()->ci_cpu_freq + 500000) / 1000000;
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/* Compute clock cycles per hz */
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curcpu()->ci_cycles_per_hz = curcpu()->ci_cpu_freq / hz;
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curcpu()->ci_cycles_per_hz = (curcpu()->ci_cpu_freq + hz / 2 ) / hz;
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||||
|
||||
printf(": %lu.%02luMHz (hz cycles = %lu, delay divisor = %lu)\n",
|
||||
curcpu()->ci_cpu_freq / 1000000,
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: crime.c,v 1.28 2008/01/09 20:38:36 wiz Exp $ */
|
||||
/* $NetBSD: crime.c,v 1.29 2008/05/26 15:59:30 tsutsui Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2004 Christopher SEKIYA
|
||||
|
|
@ -38,7 +38,7 @@
|
|||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: crime.c,v 1.28 2008/01/09 20:38:36 wiz Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: crime.c,v 1.29 2008/05/26 15:59:30 tsutsui Exp $");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/device.h>
|
||||
|
|
@ -158,7 +158,6 @@ crime_attach(struct device *parent, struct device *self, void *aux)
|
|||
curcpu()->ci_cpu_freq = cps * 2 * hz;
|
||||
curcpu()->ci_cycles_per_hz = curcpu()->ci_cpu_freq / (2 * hz);
|
||||
curcpu()->ci_divisor_delay = curcpu()->ci_cpu_freq / (2 * 1000000);
|
||||
MIPS_SET_CI_RECIPROCAL(curcpu());
|
||||
|
||||
/* Turn on memory error and crime error interrupts.
|
||||
All others turned on as devices are registered. */
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: int.c,v 1.17 2008/01/09 20:38:36 wiz Exp $ */
|
||||
/* $NetBSD: int.c,v 1.18 2008/05/26 15:59:30 tsutsui Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2004 Christopher SEKIYA
|
||||
|
|
@ -32,7 +32,7 @@
|
|||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: int.c,v 1.17 2008/01/09 20:38:36 wiz Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: int.c,v 1.18 2008/05/26 15:59:30 tsutsui Exp $");
|
||||
|
||||
#include "opt_cputype.h"
|
||||
|
||||
|
|
@ -187,7 +187,6 @@ int_attach(struct device *parent, struct device *self, void *aux)
|
|||
|
||||
curcpu()->ci_cycles_per_hz = curcpu()->ci_cpu_freq / (2 * hz);
|
||||
curcpu()->ci_divisor_delay = curcpu()->ci_cpu_freq / (2 * 1000000);
|
||||
MIPS_SET_CI_RECIPROCAL(curcpu());
|
||||
|
||||
if (mach_type == MACH_SGI_IP22) {
|
||||
/* Wire interrupts 7, 11 to mappable interrupt 0,1 handlers */
|
||||
|
|
|
|||
Loading…
Reference in New Issue