1/*********************************************************************
2 *
3 * Filename:      qos.h
4 * Version:       1.0
5 * Description:   Quality of Service definitions
6 * Status:        Experimental.
7 * Author:        Dag Brattli <dagb@cs.uit.no>
8 * Created at:    Fri Sep 19 23:21:09 1997
9 * Modified at:   Thu Dec  2 13:51:54 1999
10 * Modified by:   Dag Brattli <dagb@cs.uit.no>
11 *
12 *     Copyright (c) 1999 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 ********************************************************************/
30
31#ifndef IRDA_QOS_H
32#define IRDA_QOS_H
33
34#include <linux/config.h>
35#include <linux/skbuff.h>
36
37#include <net/irda/parameters.h>
38
39#define PI_BAUD_RATE     0x01
40#define PI_MAX_TURN_TIME 0x82
41#define PI_DATA_SIZE     0x83
42#define PI_WINDOW_SIZE   0x84
43#define PI_ADD_BOFS      0x85
44#define PI_MIN_TURN_TIME 0x86
45#define PI_LINK_DISC     0x08
46
47#define IR_115200_MAX 0x3f
48
49/* Baud rates (first byte) */
50#define IR_2400     0x01
51#define IR_9600     0x02
52#define IR_19200    0x04
53#define IR_38400    0x08
54#define IR_57600    0x10
55#define IR_115200   0x20
56#define IR_576000   0x40
57#define IR_1152000  0x80
58
59/* Baud rates (second byte) */
60#define IR_4000000  0x01
61#define IR_16000000 0x02
62
63/* Quality of Service information */
64typedef struct {
65	__u32 value;
66	__u16 bits; /* LSB is first byte, MSB is second byte */
67} qos_value_t;
68
69struct qos_info {
70	magic_t magic;
71
72	qos_value_t baud_rate;       /* IR_11520O | ... */
73	qos_value_t max_turn_time;
74	qos_value_t data_size;
75	qos_value_t window_size;
76	qos_value_t additional_bofs;
77	qos_value_t min_turn_time;
78	qos_value_t link_disc_time;
79
80	qos_value_t power;
81};
82
83extern int sysctl_max_baud_rate;
84extern int sysctl_max_inactive_time;
85
86extern __u32 baud_rates[];
87extern __u32 data_sizes[];
88extern __u32 min_turn_times[];
89extern __u32 add_bofs[];
90extern __u32 compressions[];
91
92void irda_init_max_qos_capabilies(struct qos_info *qos);
93void irda_qos_compute_intersection(struct qos_info *, struct qos_info *);
94
95__u32 irlap_max_line_capacity(__u32 speed, __u32 max_turn_time);
96__u32 irlap_requested_line_capacity(struct qos_info *qos);
97
98int msb_index(__u16 byte);
99void irda_qos_bits_to_value(struct qos_info *qos);
100
101/* So simple, how could we not inline those two ?
102 * Note : one byte is 10 bits if you include start and stop bits
103 * Jean II */
104#define irlap_min_turn_time_in_bytes(speed, min_turn_time) (	\
105	speed * min_turn_time / 10000000			\
106)
107#define irlap_xbofs_in_usec(speed, xbofs) (			\
108	xbofs * 10000000 / speed				\
109)
110
111#endif
112
113