Release 4.14 drivers/isdn/hardware/eicon/dqueue.c

/* $Id: dqueue.c,v 1.5 2003/04/12 21:40:49 schindler Exp $
 *
 * Driver for Eicon DIVA Server ISDN cards.
 * User Mode IDI Interface
 *
 * Copyright 2000-2003 by Armin Schindler (mac@melware.de)
 * Copyright 2000-2003 Cytronics & Melware (info@melware.de)
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 */

#include "platform.h"
#include "dqueue.h"


int

diva_data_q_init(diva_um_idi_data_queue_t *q,
		 int max_length, int max_segments)
{
	int i;

	q->max_length = max_length;
	q->segments = max_segments;

	for (i = 0; i < q->segments; i++) {
		q->data[i] = NULL;
		q->length[i] = 0;
	}
	q->read = q->write = q->count = q->segment_pending = 0;

	for (i = 0; i < q->segments; i++) {
		if (!(q->data[i] = diva_os_malloc(0, q->max_length))) {
			diva_data_q_finit(q);
			return (-1);
		}
	}

	return (0);
}

Contributors
Person
Tokens
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Commits
CommitProp
Armin Schindler
138
99.28%
1
50.00%
Al Viro
1
0.72%
1
50.00%
Total
139
100.00%
2
100.00%



int diva_data_q_finit(diva_um_idi_data_queue_t *q)
{
	int i;

	for (i = 0; i < q->segments; i++) {
		if (q->data[i]) {
			diva_os_free(0, q->data[i]);
		}
		q->data[i] = NULL;
		q->length[i] = 0;
	}
	q->read = q->write = q->count = q->segment_pending = 0;

	return (0);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
91
97.85%
1
33.33%
Kai Germaschewski
1
1.08%
1
33.33%
Al Viro
1
1.08%
1
33.33%
Total
93
100.00%
3
100.00%



int diva_data_q_get_max_length(const diva_um_idi_data_queue_t *q)
{
	return (q->max_length);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
16
94.12%
1
50.00%
Kai Germaschewski
1
5.88%
1
50.00%
Total
17
100.00%
2
100.00%



void *diva_data_q_get_segment4write(diva_um_idi_data_queue_t *q)
{
	if ((!q->segment_pending) && (q->count < q->segments)) {
		q->segment_pending = 1;
		return (q->data[q->write]);
	}

	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
51
98.08%
1
50.00%
Al Viro
1
1.92%
1
50.00%
Total
52
100.00%
2
100.00%


void

diva_data_q_ack_segment4write(diva_um_idi_data_queue_t *q, int length)
{
	if (q->segment_pending) {
		q->length[q->write] = length;
		q->count++;
		q->write++;
		if (q->write >= q->segments) {
			q->write = 0;
		}
		q->segment_pending = 0;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
65
100.00%
1
100.00%
Total
65
100.00%
1
100.00%



const void *diva_data_q_get_segment4read(const diva_um_idi_data_queue_t *
					 q)
{
	if (q->count) {
		return (q->data[q->read]);
	}
	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
34
97.14%
1
50.00%
Al Viro
1
2.86%
1
50.00%
Total
35
100.00%
2
100.00%



int diva_data_q_get_segment_length(const diva_um_idi_data_queue_t *q)
{
	return (q->length[q->read]);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
21
95.45%
1
50.00%
Kai Germaschewski
1
4.55%
1
50.00%
Total
22
100.00%
2
100.00%



void diva_data_q_ack_segment4read(diva_um_idi_data_queue_t *q)
{
	if (q->count) {
		q->length[q->read] = 0;
		q->count--;
		q->read++;
		if (q->read >= q->segments) {
			q->read = 0;
		}
	}
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
55
98.21%
1
50.00%
Kai Germaschewski
1
1.79%
1
50.00%
Total
56
100.00%
2
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Armin Schindler
478
98.35%
2
50.00%
Al Viro
4
0.82%
1
25.00%
Kai Germaschewski
4
0.82%
1
25.00%
Total
486
100.00%
4
100.00%
Directory: drivers/isdn/hardware/eicon

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