1 \ *****************************************************************************
2 \ * Copyright (c) 2004, 2008 IBM Corporation
3 \ * All rights reserved.
4 \ * This program and the accompanying materials
5 \ * are made available under the terms of the BSD License
6 \ * which accompanies this distribution, and is available at
7 \ * http://www.opensource.org/licenses/bsd-license.php
10 \ * IBM Corporation - initial implementation
11 \ ****************************************************************************/
14 \ Generic disk support
17 \ name of device ( e.g. "disk", "cdrom", ... )
20 \ Needs from parent in device tree:
21 \ dev-read-blocks ( addr block# #blocks phys.lo ... phys.hi -- #read )
28 \ read ( addr len -- actual )
29 \ seek ( pos.lo pos.hi -- status )
30 \ read-blocks ( addr block# #blocks -- #read )
32 \ disk-label package interpose for partition and file systems support
33 \ deblocker package for byte read support
35 ( str len phys.lo ... phys.hi -- )
36 new-device set-unit ( str len )
38 s" 0 pci-alias-" 2swap $cat evaluate
41 \ Requiered interface for deblocker
43 s" block-size" $call-parent CONSTANT block-size
44 s" max-transfer" $call-parent CONSTANT max-transfer
46 : read-blocks ( addr block# #blocks -- #read )
47 my-unit s" dev-read-blocks" $call-parent
50 INSTANCE VARIABLE deblocker
53 0 0 s" deblocker" $open-package dup deblocker ! dup IF
54 s" disk-label" find-package IF
60 deblocker @ close-package ;
62 : seek ( pos.lo pos.hi -- status )
63 s" seek" deblocker @ $call-method ;
65 : read ( addr len -- actual )
66 s" read" deblocker @ $call-method ;