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Annotation of sys/arch/amd64/amd64/ipifuncs.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: ipifuncs.c,v 1.7 2007/05/25 16:22:11 art Exp $        */
        !             2: /*     $NetBSD: ipifuncs.c,v 1.1 2003/04/26 18:39:28 fvdl Exp $ */
        !             3:
        !             4: /*-
        !             5:  * Copyright (c) 2000 The NetBSD Foundation, Inc.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * This code is derived from software contributed to The NetBSD Foundation
        !             9:  * by RedBack Networks Inc.
        !            10:  *
        !            11:  * Author: Bill Sommerfeld
        !            12:  *
        !            13:  * Redistribution and use in source and binary forms, with or without
        !            14:  * modification, are permitted provided that the following conditions
        !            15:  * are met:
        !            16:  * 1. Redistributions of source code must retain the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer.
        !            18:  * 2. Redistributions in binary form must reproduce the above copyright
        !            19:  *    notice, this list of conditions and the following disclaimer in the
        !            20:  *    documentation and/or other materials provided with the distribution.
        !            21:  * 3. All advertising materials mentioning features or use of this software
        !            22:  *    must display the following acknowledgement:
        !            23:  *        This product includes software developed by the NetBSD
        !            24:  *        Foundation, Inc. and its contributors.
        !            25:  * 4. Neither the name of The NetBSD Foundation nor the names of its
        !            26:  *    contributors may be used to endorse or promote products derived
        !            27:  *    from this software without specific prior written permission.
        !            28:  *
        !            29:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
        !            30:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        !            31:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
        !            32:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
        !            33:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
        !            34:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        !            35:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
        !            36:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        !            37:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
        !            38:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            39:  * POSSIBILITY OF SUCH DAMAGE.
        !            40:  */
        !            41:
        !            42: #include <sys/cdefs.h>                 /* RCS ID & Copyright macro defns */
        !            43:
        !            44: /*
        !            45:  * Interprocessor interrupt handlers.
        !            46:  */
        !            47:
        !            48: #include <sys/param.h>
        !            49: #include <sys/device.h>
        !            50: #include <sys/systm.h>
        !            51:
        !            52: #include <uvm/uvm_extern.h>
        !            53:
        !            54: #include <machine/intr.h>
        !            55: #include <machine/atomic.h>
        !            56: #include <machine/cpuvar.h>
        !            57: #include <machine/i82093var.h>
        !            58: #include <machine/i82489reg.h>
        !            59: #include <machine/i82489var.h>
        !            60: #include <machine/mtrr.h>
        !            61: #include <machine/gdt.h>
        !            62: #include <machine/fpu.h>
        !            63:
        !            64: #include <ddb/db_output.h>
        !            65: #include <machine/db_machdep.h>
        !            66:
        !            67: void x86_64_ipi_halt(struct cpu_info *);
        !            68:
        !            69: void x86_64_ipi_synch_fpu(struct cpu_info *);
        !            70: void x86_64_ipi_flush_fpu(struct cpu_info *);
        !            71:
        !            72: void x86_64_ipi_nop(struct cpu_info *);
        !            73:
        !            74: #ifdef MTRR
        !            75: void x86_64_reload_mtrr(struct cpu_info *);
        !            76: #else
        !            77: #define x86_64_reload_mtrr NULL
        !            78: #endif
        !            79:
        !            80: void (*ipifunc[X86_NIPI])(struct cpu_info *) =
        !            81: {
        !            82:        x86_64_ipi_halt,
        !            83:        x86_64_ipi_nop,
        !            84:        x86_64_ipi_flush_fpu,
        !            85:        x86_64_ipi_synch_fpu,
        !            86:        NULL,
        !            87:        x86_64_reload_mtrr,
        !            88:        gdt_reload_cpu,
        !            89: #ifdef DDB
        !            90:        x86_ipi_db,
        !            91: #else
        !            92:        NULL,
        !            93: #endif
        !            94:        x86_setperf_ipi,
        !            95: };
        !            96:
        !            97: void
        !            98: x86_64_ipi_nop(struct cpu_info *ci)
        !            99: {
        !           100: }
        !           101:
        !           102: void
        !           103: x86_64_ipi_halt(struct cpu_info *ci)
        !           104: {
        !           105:        disable_intr();
        !           106:
        !           107:        for(;;) {
        !           108:                __asm __volatile("hlt");
        !           109:        }
        !           110: }
        !           111:
        !           112: void
        !           113: x86_64_ipi_flush_fpu(struct cpu_info *ci)
        !           114: {
        !           115:        fpusave_cpu(ci, 0);
        !           116: }
        !           117:
        !           118: void
        !           119: x86_64_ipi_synch_fpu(struct cpu_info *ci)
        !           120: {
        !           121:        fpusave_cpu(ci, 1);
        !           122: }
        !           123:
        !           124: #ifdef MTRR
        !           125:
        !           126: /*
        !           127:  * mtrr_reload_cpu() is a macro in mtrr.h which picks the appropriate
        !           128:  * function to use..
        !           129:  */
        !           130:
        !           131: void
        !           132: x86_64_reload_mtrr(struct cpu_info *ci)
        !           133: {
        !           134:        if (mtrr_funcs != NULL)
        !           135:                mtrr_reload_cpu(ci);
        !           136: }
        !           137: #endif