Home | History | Annotate | Line # | Download | only in sun2
mm_md.c revision 1.3 
      1 /*	$NetBSD: mm_md.c,v 1.3 2011/06/14 15:51:35 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * the Systems Programming Group of the University of Utah Computer
      9  * Science Department.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	from: @(#)mem.c	8.3 (Berkeley) 1/12/94
     36  */
     37 
     38 /*
     39  * Copyright (c) 1994, 1995 Gordon W. Ross
     40  * Copyright (c) 1993 Adam Glass
     41  * Copyright (c) 1988 University of Utah.
     42  *
     43  * This code is derived from software contributed to Berkeley by
     44  * the Systems Programming Group of the University of Utah Computer
     45  * Science Department.
     46  *
     47  * Redistribution and use in source and binary forms, with or without
     48  * modification, are permitted provided that the following conditions
     49  * are met:
     50  * 1. Redistributions of source code must retain the above copyright
     51  *    notice, this list of conditions and the following disclaimer.
     52  * 2. Redistributions in binary form must reproduce the above copyright
     53  *    notice, this list of conditions and the following disclaimer in the
     54  *    documentation and/or other materials provided with the distribution.
     55  * 3. All advertising materials mentioning features or use of this software
     56  *    must display the following acknowledgement:
     57  *	This product includes software developed by the University of
     58  *	California, Berkeley and its contributors.
     59  * 4. Neither the name of the University nor the names of its contributors
     60  *    may be used to endorse or promote products derived from this software
     61  *    without specific prior written permission.
     62  *
     63  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     64  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     65  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     66  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     67  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     68  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     69  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     70  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     71  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     72  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     73  * SUCH DAMAGE.
     74  *
     75  *	from: @(#)mem.c	8.3 (Berkeley) 1/12/94
     76  */
     77 
     78 #include <sys/cdefs.h>
     79 __KERNEL_RCSID(0, "$NetBSD: mm_md.c,v 1.3 2011/06/14 15:51:35 tsutsui Exp $");
     80 
     81 #include <sys/param.h>
     82 #include <sys/errno.h>
     83 #include <uvm/uvm_extern.h>
     84 #include <machine/leds.h>
     85 #include <machine/pmap.h>
     86 #include <dev/mm.h>
     87 
     88 #define DEV_VME16D16	5	/* minor device 5 is /dev/vme16d16 */
     89 #define DEV_VME24D16	6	/* minor device 6 is /dev/vme24d16 */
     90 #define DEV_EEPROM	11 	/* minor device 11 is eeprom */
     91 #define DEV_LEDS	13 	/* minor device 13 is leds */
     92 
     93 int
     94 mm_md_readwrite(dev_t dev, struct uio *uio)
     95 {
     96 
     97 	switch (minor(dev)) {
     98 	case DEV_LEDS:
     99 		return leds_uio(uio);
    100 	default:
    101 		return ENXIO;
    102 	}
    103 }
    104 
    105 paddr_t
    106 mm_md_mmap(dev_t dev, off_t off, int prot)
    107 {
    108 
    109 	switch (minor(dev)) {
    110 	case DEV_VME16D16:
    111 		if (off & 0xffff0000)
    112 			return -1;
    113 		off |= 0xff0000;
    114 		/* fall through */
    115 	case DEV_VME24D16:
    116 		if (off & 0xff000000)
    117 			return -1;
    118 		return (off | (off & 0x800000 ? PMAP_VME8: PMAP_VME0));
    119 	default:
    120 		return (-1);
    121 	}
    122 }
    123