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Annotation of tme/generic/disk.c, revision 1.1

1.1     ! root        1: /* $Id: disk.c,v 1.1 2003/07/29 18:18:35 fredette Exp $ */
        !             2: 
        !             3: /* generic/disk.c - generic disk implementation support: */
        !             4: 
        !             5: /*
        !             6:  * Copyright (c) 2003 Matt Fredette
        !             7:  * All rights reserved.
        !             8:  *
        !             9:  * Redistribution and use in source and binary forms, with or without
        !            10:  * modification, are permitted provided that the following conditions
        !            11:  * are met:
        !            12:  * 1. Redistributions of source code must retain the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer.
        !            14:  * 2. Redistributions in binary form must reproduce the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer in the
        !            16:  *    documentation and/or other materials provided with the distribution.
        !            17:  * 3. All advertising materials mentioning features or use of this software
        !            18:  *    must display the following acknowledgement:
        !            19:  *      This product includes software developed by Matt Fredette.
        !            20:  * 4. The name of the author may not be used to endorse or promote products
        !            21:  *    derived from this software without specific prior written permission.
        !            22:  *
        !            23:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            24:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            25:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
        !            26:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
        !            27:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            28:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            29:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            31:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
        !            32:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            33:  * POSSIBILITY OF SUCH DAMAGE.
        !            34:  */
        !            35: 
        !            36: #include <tme/common.h>
        !            37: _TME_RCSID("$Id: disk.c,v 1.1 2003/07/29 18:18:35 fredette Exp $");
        !            38: 
        !            39: /* includes: */
        !            40: #include <tme/generic/disk.h>
        !            41: #include <tme/generic/bus.h>
        !            42: #include <stdlib.h>
        !            43: 
        !            44: /* this scores a disk connection: */
        !            45: int
        !            46: tme_disk_connection_score(struct tme_connection *conn,
        !            47:                          unsigned int *_score)
        !            48: {
        !            49:   struct tme_disk_connection *conn_disk;
        !            50:   struct tme_disk_connection *conn_disk_other;
        !            51: 
        !            52:   /* both sides must be disk connections: */
        !            53:   assert(conn->tme_connection_type == TME_CONNECTION_DISK);
        !            54:   assert(conn->tme_connection_other->tme_connection_type == TME_CONNECTION_DISK);
        !            55: 
        !            56:   /* you cannot connect a disk to a disk, or a disk frontend to a disk
        !            57:      frontend: */
        !            58:   conn_disk = (struct tme_disk_connection *) conn;
        !            59:   conn_disk_other = (struct tme_disk_connection *) conn->tme_connection_other;
        !            60:   *_score
        !            61:     = ((conn_disk->tme_disk_connection_read != NULL
        !            62:        || conn_disk->tme_disk_connection_write != NULL)
        !            63:        != (conn_disk_other->tme_disk_connection_read != NULL
        !            64:           || conn_disk_other->tme_disk_connection_write != NULL));
        !            65:   return (TME_OK);
        !            66: }
        !            67: 
        !            68: /* this parses a disk dimension: */
        !            69: tme_uint32_t
        !            70: tme_disk_dimension_parse(_tme_const char *dimension_string)
        !            71: {
        !            72:   return (tme_bus_addr_parse(dimension_string, 0));
        !            73: }

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