1 /* $Id: capiutil.h,v 1.5.6.2 2001/09/23 22:24:33 kai Exp $
2  *
3  * CAPI 2.0 defines & types
4  *
5  * From CAPI 2.0 Development Kit AVM 1995 (msg.c)
6  * Rewritten for Linux 1996 by Carsten Paeth <calle@calle.de>
7  *
8  * This software may be used and distributed according to the terms
9  * of the GNU General Public License, incorporated herein by reference.
10  *
11  */
12 
13 #ifndef __CAPIUTIL_H__
14 #define __CAPIUTIL_H__
15 
16 #include <asm/types.h>
17 
18 #define CAPIMSG_BASELEN		8
19 #define CAPIMSG_U8(m, off)	(m[off])
20 #define CAPIMSG_U16(m, off)	(m[off]|(m[(off)+1]<<8))
21 #define CAPIMSG_U32(m, off)	(m[off]|(m[(off)+1]<<8)|(m[(off)+2]<<16)|(m[(off)+3]<<24))
22 #define	CAPIMSG_LEN(m)		CAPIMSG_U16(m,0)
23 #define	CAPIMSG_APPID(m)	CAPIMSG_U16(m,2)
24 #define	CAPIMSG_COMMAND(m)	CAPIMSG_U8(m,4)
25 #define	CAPIMSG_SUBCOMMAND(m)	CAPIMSG_U8(m,5)
26 #define CAPIMSG_CMD(m)		(((m[4])<<8)|(m[5]))
27 #define	CAPIMSG_MSGID(m)	CAPIMSG_U16(m,6)
28 #define CAPIMSG_CONTROLLER(m)	(m[8] & 0x7f)
29 #define CAPIMSG_CONTROL(m)	CAPIMSG_U32(m, 8)
30 #define CAPIMSG_NCCI(m)		CAPIMSG_CONTROL(m)
31 #define CAPIMSG_DATALEN(m)	CAPIMSG_U16(m,16) /* DATA_B3_REQ */
32 
capimsg_setu8(void * m,int off,__u8 val)33 static inline void capimsg_setu8(void *m, int off, __u8 val)
34 {
35 	((__u8 *)m)[off] = val;
36 }
37 
capimsg_setu16(void * m,int off,__u16 val)38 static inline void capimsg_setu16(void *m, int off, __u16 val)
39 {
40 	((__u8 *)m)[off] = val & 0xff;
41 	((__u8 *)m)[off+1] = (val >> 8) & 0xff;
42 }
43 
capimsg_setu32(void * m,int off,__u32 val)44 static inline void capimsg_setu32(void *m, int off, __u32 val)
45 {
46 	((__u8 *)m)[off] = val & 0xff;
47 	((__u8 *)m)[off+1] = (val >> 8) & 0xff;
48 	((__u8 *)m)[off+2] = (val >> 16) & 0xff;
49 	((__u8 *)m)[off+3] = (val >> 24) & 0xff;
50 }
51 
52 #define	CAPIMSG_SETLEN(m, len)		capimsg_setu16(m, 0, len)
53 #define	CAPIMSG_SETAPPID(m, applid)	capimsg_setu16(m, 2, applid)
54 #define	CAPIMSG_SETCOMMAND(m,cmd)	capimsg_setu8(m, 4, cmd)
55 #define	CAPIMSG_SETSUBCOMMAND(m, cmd)	capimsg_setu8(m, 5, cmd)
56 #define	CAPIMSG_SETMSGID(m, msgid)	capimsg_setu16(m, 6, msgid)
57 #define	CAPIMSG_SETCONTROL(m, contr)	capimsg_setu32(m, 8, contr)
58 #define	CAPIMSG_SETDATALEN(m, len)	capimsg_setu16(m, 16, len)
59 
60 #endif				/* __CAPIUTIL_H__ */
61