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Annotation of sys/arch/mvme68k/mvme68k/sys_machdep.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: sys_machdep.c,v 1.19 2005/12/17 07:31:26 miod Exp $ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1982, 1986, 1993
        !             5:  *     The Regents of the University of California.  All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  * 3. Neither the name of the University nor the names of its contributors
        !            16:  *    may be used to endorse or promote products derived from this software
        !            17:  *    without specific prior written permission.
        !            18:  *
        !            19:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            20:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            21:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            22:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            23:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            24:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            25:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            26:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            27:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            28:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            29:  * SUCH DAMAGE.
        !            30:  *
        !            31:  *     @(#)sys_machdep.c       8.2 (Berkeley) 1/13/94
        !            32:  */
        !            33:
        !            34: #include <sys/param.h>
        !            35: #include <sys/systm.h>
        !            36: #include <sys/ioctl.h>
        !            37: #include <sys/file.h>
        !            38: #include <sys/time.h>
        !            39: #include <sys/proc.h>
        !            40: #include <sys/signalvar.h>
        !            41: #include <sys/uio.h>
        !            42: #include <sys/kernel.h>
        !            43: #include <sys/mtio.h>
        !            44: #include <sys/buf.h>
        !            45: #include <sys/mount.h>
        !            46:
        !            47: #include <sys/syscallargs.h>
        !            48:
        !            49: #include <uvm/uvm_extern.h>
        !            50:
        !            51: #include <machine/cpu.h>
        !            52:
        !            53: /*
        !            54:  * DMA cache control
        !            55:  */
        !            56: /*ARGSUSED1*/
        !            57: void
        !            58: dma_cachectl(addr, len)
        !            59:        caddr_t  addr;
        !            60:        int len;
        !            61: {
        !            62: #if defined(M68040) || defined(M68060)
        !            63:        if (mmutype <= MMU_68040) {
        !            64:                register int inc = 0;
        !            65:                int pa = 0;
        !            66:                caddr_t end;
        !            67:
        !            68:                end = addr + len;
        !            69:                if (len <= 1024 || mmutype == MMU_68060) { /* always line push line for 060 */
        !            70:                        addr = (caddr_t)((int)addr & ~0xF);
        !            71:                        inc = 16;
        !            72:                } else {
        !            73:                        addr = (caddr_t)((int)addr & ~PGOFSET);
        !            74:                        inc = NBPG;
        !            75:                }
        !            76:                do {
        !            77:                        /*
        !            78:                         * Convert to physical address.
        !            79:                         */
        !            80:                        if (pa == 0 || ((int)addr & PGOFSET) == 0) {
        !            81:                                pa = kvtop((vaddr_t)addr);
        !            82:                        }
        !            83:                        if (inc == 16) {
        !            84:                                DCFL(pa);
        !            85:                                ICPL(pa);
        !            86:                        } else {
        !            87:                                DCFP(pa);
        !            88:                                ICPP(pa);
        !            89:                        }
        !            90:                        pa += inc;
        !            91:                        addr += inc;
        !            92:                } while (addr < end);
        !            93:        }
        !            94: #endif /* M68040 */
        !            95: }
        !            96:
        !            97: int
        !            98: sys_sysarch(p, v, retval)
        !            99:        struct proc *p;
        !           100:        void *v;
        !           101:        register_t *retval;
        !           102: {
        !           103: #if 0
        !           104:        struct sys_sysarch_args /* {
        !           105:                syscallarg(int) op;
        !           106:                syscallarg(char *) parms;
        !           107:        } */ *uap = v;
        !           108: #endif
        !           109:
        !           110:        return ENOSYS;
        !           111: }