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Annotation of sys/arch/mvme68k/mvme68k/sys_machdep.c, Revision 1.1.1.1

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: }