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, write to the Free Software 
 26 *     Foundation, Inc., 59 Temple Place, Suite 330, Boston, 
 27 *     MA 02111-1307 USA
 28 *
 29 *     Michel Dänzer <daenzer@debian.org>, 10/2001
 30 *     - simplify irda_pv_t to avoid endianness issues
 31 *     
 32 ********************************************************************/
 33
 34#ifndef IRDA_PARAMS_H
 35#define IRDA_PARAMS_H
 36
 37/*
 38 *  The currently supported types. Beware not to change the sequence since
 39 *  it a good reason why the sized integers has a value equal to their size
 40 */
 41typedef enum {
 42	PV_INTEGER,      /* Integer of any (pl) length */
 43	PV_INT_8_BITS,   /* Integer of 8 bits in length */
 44	PV_INT_16_BITS,  /* Integer of 16 bits in length */
 45	PV_STRING,       /* \0 terminated string */
 46	PV_INT_32_BITS,  /* Integer of 32 bits in length */
 47	PV_OCT_SEQ,      /* Octet sequence */
 48	PV_NO_VALUE      /* Does not contain any value (pl=0) */
 49} PV_TYPE;
 50
 51/* Bit 7 of type field */
 52#define PV_BIG_ENDIAN    0x80 
 53#define PV_LITTLE_ENDIAN 0x00
 54#define PV_MASK          0x7f   /* To mask away endian bit */
 55
 56#define PV_PUT 0
 57#define PV_GET 1
 58
 59typedef union {
 60	char   *c;
 61	__u32   i;
 62	__u32 *ip;
 63} irda_pv_t;
 64
 65typedef struct {
 66	__u8 pi;
 67	__u8 pl;
 68	irda_pv_t pv;
 69} irda_param_t;
 70
 71typedef int (*PI_HANDLER)(void *self, irda_param_t *param, int get);
 72typedef int (*PV_HANDLER)(void *self, __u8 *buf, int len, __u8 pi,
 73			  PV_TYPE type, PI_HANDLER func);
 74
 75typedef struct {
 76	PI_HANDLER func;  /* Handler for this parameter identifier */
 77	PV_TYPE    type;  /* Data type for this parameter */
 78} pi_minor_info_t;
 79
 80typedef struct {
 81	pi_minor_info_t *pi_minor_call_table;
 82	int len;
 83} pi_major_info_t;
 84
 85typedef struct {
 86	pi_major_info_t *tables;
 87	int              len;
 88	__u8             pi_mask;
 89	int              pi_major_offset;
 90} pi_param_info_t;
 91
 92int irda_param_pack(__u8 *buf, char *fmt, ...);
 93
 94int irda_param_insert(void *self, __u8 pi, __u8 *buf, int len, 
 95		      pi_param_info_t *info);
 96int irda_param_extract_all(void *self, __u8 *buf, int len, 
 97			   pi_param_info_t *info);
 98
 99#define irda_param_insert_byte(buf,pi,pv) irda_param_pack(buf,"bbb",pi,1,pv)
100
101#endif /* IRDA_PARAMS_H */
102