xref: /netbsd-src/sys/arch/arm/broadcom/bcm2835_mboxreg.h (revision f95acf1e356dc22e3baef2a6e9199300eaf1043c)
1 /*	$NetBSD: bcm2835_mboxreg.h,v 1.1 2012/08/20 07:45:24 skrll Exp $	*/
2 
3 /*-
4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Nick Hudson
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #ifndef _BCM2835_MBOXREG_H_
33 #define	_BCM2835_MBOXREG_H_
34 
35 /* mailbox 0 (from VC) and mailbox 1 (to VC) */
36 #define	BCM2835_MBOX_SIZE	0x80
37 
38 #define	BCM2835_MBOX_READ	0x00
39 #define	BCM2835_MBOX_WRITE	0x00
40 #define	BCM2835_MBOX_POLL	0x10	/* read without popping the fifo */
41 #define	BCM2835_MBOX_ID		0x14	/* sender ID (bottom two bits) */
42 #define	BCM2835_MBOX_STATUS	0x18	/* status */
43 #define	 BCM2835_MBOX_STATUS_FULL	0x80000000
44 #define	 BCM2835_MBOX_STATUS_EMPTY	0x40000000
45 #define	 BCM2835_MBOX_STATUS_LEVEL	0x400000FF
46 #define	BCM2835_MBOX_CFG	0x1C	/* configuration */
47 #define	 BCM2835_MBOX_CFG_DATAIRQEN		0x00000001
48 #define	 BCM2835_MBOX_CFG_SPACEIRQEN		0x00000002
49 #define	 BCM2835_MBOX_CFG_EMPTYOPIRQEN		0x00000004
50 #define	 BCM2835_MBOX_CFG_MAILCLEAR		0x00000008
51 #define	 BCM2835_MBOX_CFG_DATAPENDING		0x00000010
52 #define	 BCM2835_MBOX_CFG_SPACEPENDING		0x00000020
53 #define	 BCM2835_MBOX_CFG_EMPTYOPPENDING	0x00000040
54 #define	 BCM2835_MBOX_CFG_ENOOWN		0x00000100
55 #define	 BCM2835_MBOX_CFG_EOVERFLOW		0x00000200
56 #define	 BCM2835_MBOX_CFG_EUNDERFLOW		0x00000400
57 
58 #define	BCM2835_MBOX0_BASE	0x00
59 #define	BCM2835_MBOX1_BASE	0x20
60 
61 #define	BCM2835_MBOX0_READ	(BCM2835_MBOX0_BASE + BCM2835_MBOX_READ)
62 #define	BCM2835_MBOX0_WRITE	(BCM2835_MBOX0_BASE + BCM2835_MBOX_WRITE)
63 #define	BCM2835_MBOX0_POLL	(BCM2835_MBOX0_BASE + BCM2835_MBOX_POLL)
64 #define	BCM2835_MBOX0_ID	(BCM2835_MBOX0_BASE + BCM2835_MBOX_ID)
65 #define	BCM2835_MBOX0_STATUS	(BCM2835_MBOX0_BASE + BCM2835_MBOX_STATUS)
66 #define	BCM2835_MBOX0_CFG	(BCM2835_MBOX0_BASE + BCM2835_MBOX_READ)
67 
68 #define	BCM2835_MBOX1_READ	(BCM2835_MBOX1_BASE + BCM2835_MBOX_READ)
69 #define	BCM2835_MBOX1_WRITE	(BCM2835_MBOX1_BASE + BCM2835_MBOX_WRITE)
70 #define	BCM2835_MBOX1_POLL	(BCM2835_MBOX1_BASE + BCM2835_MBOX_POLL)
71 #define	BCM2835_MBOX1_ID	(BCM2835_MBOX1_BASE + BCM2835_MBOX_ID)
72 #define	BCM2835_MBOX1_STATUS	(BCM2835_MBOX1_BASE + BCM2835_MBOX_STATUS)
73 #define	BCM2835_MBOX1_CFG	(BCM2835_MBOX1_BASE + BCM2835_MBOX_READ)
74 
75 #endif /* _BCM2835_MBOXREG_H_ */
76