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1 /*
2 * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
3 * The President and Fellows of Harvard College.
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 UNIVERSITY 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 UNIVERSITY 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 #ifndef _LAMEBUS_EMU_H_
31 #define _LAMEBUS_EMU_H_
32
33
34 #define EMU_MAXIO 16384
35 #define EMU_ROOTHANDLE 0
36
37 /*
38 * The per-device data used by the emufs device driver.
39 * (Note that this is only a small portion of its actual data;
40 * all the filesystem stuff goes elsewhere.
41 */
42
43 struct emu_softc {
44 /* Initialized by lower-level attach code */
45 void *e_busdata;
46 uint32_t e_buspos;
47 int e_unit;
48
49 /* Initialized by config_emu() */
50 struct lock *e_lock;
51 struct semaphore *e_sem;
52 void *e_iobuf;
53
54 /* Written by the interrupt handler */
55 uint32_t e_result;
56 };
57
58 /* Functions called by lower-level drivers */
59 void emu_irq(/*struct emu_softc*/ void *);
60
61
62 #endif /* _LAMEBUS_EMU_H_ */