1/*********************************************************************
2 *
3 * Filename:      parameters.h
4 * Version:       1.0
5 * Description:   A more general way to handle (pi,pl,pv) parameters
6 * Status:        Experimental.
7 * Author:        Dag Brattli <dagb@cs.uit.no>
8 * Created at:    Mon Jun  7 08:47:28 1999
9 * Modified at:   Sun Jan 30 14:05:14 2000
10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
11 *
12 *     Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
13 *
14 *     This program is free software; you can redistribute it and/or
15 *     modify it under the terms of the GNU General Public License as
16 *     published by the Free Software Foundation; either version 2 of
17 *     the License, or (at your option) any later version.
18 *
19 *     This program is distributed in the hope that it will be useful,
20 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
21 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 *     GNU General Public License for more details.
23 *
24 *     You should have received a copy of the GNU General Public License
25 *     along with this program; if not, see <http://www.gnu.org/licenses/>.
26 *
27 *     Michel Dänzer <daenzer@debian.org>, 10/2001
28 *     - simplify irda_pv_t to avoid endianness issues
29 *
30 ********************************************************************/
31
32#ifndef IRDA_PARAMS_H
33#define IRDA_PARAMS_H
34
35/*
36 *  The currently supported types. Beware not to change the sequence since
37 *  it a good reason why the sized integers has a value equal to their size
38 */
39typedef enum {
40	PV_INTEGER,      /* Integer of any (pl) length */
41	PV_INT_8_BITS,   /* Integer of 8 bits in length */
42	PV_INT_16_BITS,  /* Integer of 16 bits in length */
43	PV_STRING,       /* \0 terminated string */
44	PV_INT_32_BITS,  /* Integer of 32 bits in length */
45	PV_OCT_SEQ,      /* Octet sequence */
46	PV_NO_VALUE      /* Does not contain any value (pl=0) */
47} PV_TYPE;
48
49/* Bit 7 of type field */
50#define PV_BIG_ENDIAN    0x80
51#define PV_LITTLE_ENDIAN 0x00
52#define PV_MASK          0x7f   /* To mask away endian bit */
53
54#define PV_PUT 0
55#define PV_GET 1
56
57typedef union {
58	char   *c;
59	__u32   i;
60	__u32 *ip;
61} irda_pv_t;
62
63typedef struct {
64	__u8 pi;
65	__u8 pl;
66	irda_pv_t pv;
67} irda_param_t;
68
69typedef int (*PI_HANDLER)(void *self, irda_param_t *param, int get);
70typedef int (*PV_HANDLER)(void *self, __u8 *buf, int len, __u8 pi,
71			  PV_TYPE type, PI_HANDLER func);
72
73typedef struct {
74	const PI_HANDLER func;  /* Handler for this parameter identifier */
75	PV_TYPE    type;  /* Data type for this parameter */
76} pi_minor_info_t;
77
78typedef struct {
79	const pi_minor_info_t *pi_minor_call_table;
80	int len;
81} pi_major_info_t;
82
83typedef struct {
84	const pi_major_info_t *tables;
85	int              len;
86	__u8             pi_mask;
87	int              pi_major_offset;
88} pi_param_info_t;
89
90int irda_param_pack(__u8 *buf, char *fmt, ...);
91
92int irda_param_insert(void *self, __u8 pi, __u8 *buf, int len,
93		      pi_param_info_t *info);
94int irda_param_extract_all(void *self, __u8 *buf, int len,
95			   pi_param_info_t *info);
96
97#define irda_param_insert_byte(buf,pi,pv) irda_param_pack(buf,"bbb",pi,1,pv)
98
99#endif /* IRDA_PARAMS_H */
100
101