sys_machdep.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 1990 The Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/sysproto.h>
   36 #include <sys/sysent.h>
   37 
   38 #include <machine/cpu.h>
   39 #include <machine/sysarch.h>
   40 
   41 #ifndef _SYS_SYSPROTO_H_
   42 struct sysarch_args {
   43         int op;
   44         char *parms;
   45 };
   46 #endif
   47 
   48 int
   49 sysarch(struct thread *td, struct sysarch_args *uap)
   50 {
   51         struct ia64_iodesc iod;
   52         int error;
   53 
   54         error = 0;
   55         switch(uap->op) {
   56         case IA64_IORD:
   57                 copyin(uap->parms, &iod, sizeof(iod));
   58                 switch (iod.width) {
   59                 case 1:
   60                         iod.val = inb(iod.port);
   61                         break;
   62                 case 2:
   63                         if (iod.port & 1) {
   64                                 iod.val = inb(iod.port);
   65                                 iod.val |= inb(iod.port + 1) << 8;
   66                         } else
   67                                 iod.val = inw(iod.port);
   68                         break;
   69                 case 4:
   70                         if (iod.port & 3) {
   71                                 if (iod.port & 1) {
   72                                         iod.val = inb(iod.port);
   73                                         iod.val |= inw(iod.port + 1) << 8;
   74                                         iod.val |= inb(iod.port + 3) << 24;
   75                                 } else {
   76                                         iod.val = inw(iod.port);
   77                                         iod.val |= inw(iod.port + 2) << 16;
   78                                 }
   79                         } else
   80                                 iod.val = inl(iod.port);
   81                         break;
   82                 default:
   83                         error = EINVAL;
   84                 }
   85                 copyout(&iod, uap->parms, sizeof(iod));
   86                 break;
   87         case IA64_IOWR:
   88                 copyin(uap->parms, &iod, sizeof(iod));
   89                 switch (iod.width) {
   90                 case 1:
   91                         outb(iod.port, iod.val);
   92                         break;
   93                 case 2:
   94                         if (iod.port & 1) {
   95                                 outb(iod.port, iod.val);
   96                                 outb(iod.port + 1, iod.val >> 8);
   97                         } else
   98                                 outw(iod.port, iod.val);
   99                         break;
  100                 case 4:
  101                         if (iod.port & 3) {
  102                                 if (iod.port & 1) {
  103                                         outb(iod.port, iod.val);
  104                                         outw(iod.port + 1, iod.val >> 8);
  105                                         outb(iod.port + 3, iod.val >> 24);
  106                                 } else {
  107                                         outw(iod.port, iod.val);
  108                                         outw(iod.port + 2, iod.val >> 16);
  109                                 }
  110                         } else
  111                                 outl(iod.port, iod.val);
  112                         break;
  113                 default:
  114                         error = EINVAL;
  115                 }
  116                 break;
  117         default:
  118                 error = EINVAL;
  119                 break;
  120         }
  121         return (error);
  122 }

Cache object: 0289893b0b9265511f52a2ff8674138c

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/ia64/ia64/sys_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/ia64/ia64/sys_machdep.c