LXR linux/include/net/irda/parameters.h

   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 */
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