blkdev.c (2175B)
1 /* $Id: //depot/blt/srv/ide/blkdev.c#2 $ 2 ** 3 ** Copyright 1999 Sidney Cammeresi 4 ** All rights reserved. 5 ** 6 ** Redistribution and use in source and binary forms, with or without 7 ** modification, are permitted provided that the following conditions 8 ** are met: 9 ** 1. Redistributions of source code must retain the above copyright 10 ** notice, this list of conditions, and the following disclaimer. 11 ** 2. Redistributions in binary form must reproduce the above copyright 12 ** notice, this list of conditions, and the following disclaimer in the 13 ** documentation and/or other materials provided with the distribution. 14 ** 3. The name of the author may not be used to endorse or promote products 15 ** derived from this software without specific prior written permission. 16 ** 17 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <stdlib.h> 30 #include <blt/blkdev.h> 31 #include "ide-int.h" 32 33 int blk_open (const char *name, int flags, blkdev_t **retdev) 34 { 35 blkdev_t *dev; 36 37 dev = malloc (sizeof (blkdev_t)); 38 dev->blksize = 512; 39 dev->devno = (name[4] - '0') * 2 + (name[6] - '0'); 40 *retdev = dev; 41 return 0; 42 } 43 44 int blk_close (blkdev_t *dev) 45 { 46 free (dev); 47 return 0; 48 } 49 50 int blk_read (blkdev_t *dev, void *buf, int block, int count) 51 { 52 int i; 53 54 for (i = 0; i < count; i++) 55 ide_dev[dev->devno]->read ((dev->devno & 0xff) / 2, dev->devno % 2, 56 (char *) buf + dev->blksize * i, block + i); 57 return 0; 58 } 59 60 int blk_write (blkdev_t *dev, const void *buf, int block, int count) 61 { 62 return 0; 63 } 64