/* $NetBSD: clock.c,v 1.20 2006/12/29 07:00:11 rumble Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department, Ralph Campbell, and Kazumasa Utashiro of * Software Research Associates, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah $Hdr: clock.c 1.18 91/01/21$ * * @(#)clock.c 8.1 (Berkeley) 6/11/93 */ /* * Copyright (c) 1988 University of Utah. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department, Ralph Campbell, and Kazumasa Utashiro of * Software Research Associates, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah $Hdr: clock.c 1.18 91/01/21$ * * @(#)clock.c 8.1 (Berkeley) 6/11/93 */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.20 2006/12/29 07:00:11 rumble Exp $"); #include <sys/param.h> #include <sys/device.h> #include <sys/kernel.h> #include <sys/systm.h> #include <machine/sysconf.h> #include <mips/locore.h> #include <mips/mips3_clock.h> #include <dev/clock_subr.h> #include <dev/ic/i8253reg.h> #include <machine/machtype.h> #include <sgimips/sgimips/clockvar.h> u_int32_t next_clk_intr; u_int32_t missed_clk_intrs; void mips3_clock_intr(u_int32_t, u_int32_t, u_int32_t, u_int32_t); /* * Machine-dependent clock routines. */ /* * We assume newhz is either stathz or profhz, and that neither will * change after being set up above. Could recalculate intervals here * but that would be a drag. */ void setstatclockrate(int newhz) { /* do something? */ } /* * Set up the real-time and statistics clocks. Leave stathz 0 only if * no alternative timer is available. */ void cpu_initclocks() { switch (mach_type) { #if defined(MIPS1) case MACH_SGI_IP12: /* int(4) will take care of our clocks */ /* enable hardware interrupts including hardclock(9) */ _splnone(); break; #endif /* MIPS1 */ #if defined(MIPS3) case MACH_SGI_IP20: case MACH_SGI_IP22: case MACH_SGI_IP30: case MACH_SGI_IP32: mips3_initclocks(); break; #endif /* MIPS3 */ default: panic("cpu_initclocks(): unknown mach_type IP%d", mach_type); break; } } #if defined(MIPS3) void mips3_clock_intr(u_int32_t status, u_int32_t cause, u_int32_t pc, u_int32_t ipending) { struct clockframe cf; cf.pc = pc; cf.sr = status; mips3_clockintr(&cf); } #endif /* MIPS3 */