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/*
*
* File name : tcpal_queue.c
*
* Description : tdmb driver
*
* Copyright (C) (2012, Telechips. )
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "tcpal_os.h"
#include "tcpal_debug.h"
#include "tcbd_feature.h"
#include "tcpal_queue.h"
s32 tcbd_queue_is_full(struct tcbd_queue *_queue)
{
if (_queue->front == ((_queue->rear+1)%_queue->qsize))
return 1;
return 0;
}
s32 tcbd_queue_is_empty(struct tcbd_queue *_queue)
{
if (_queue->front == _queue->rear)
return 1;
return 0;
}
void tcbd_init_queue(
struct tcbd_queue *_queue, u8* _buffer, s32 _buff_size)
{
memset((void *)_queue->q, 0,
sizeof(struct tcbd_queue_item) * TCBD_QUEUE_SIZE);
_queue->front = 0;
_queue->rear = 0;
_queue->qsize = TCBD_QUEUE_SIZE;
_queue->buff_size = _buff_size;
_queue->global_buffer = _buffer;
_queue->pointer = 0;
tcpal_create_lock(&_queue->sem, "TcbdQueue", 0);
}
void tcbd_deinit_queue(struct tcbd_queue *_queue)
{
_queue->front = 0;
_queue->rear = 0;
_queue->qsize = 0;
_queue->buff_size = 0;
tcpal_destroy_lock(&_queue->sem);
}
void tcbd_reset_queue(struct tcbd_queue *_queue)
{
_queue->front = 0;
_queue->rear = 0;
_queue->pointer = 0;
memset(_queue->q, 0,
sizeof(struct tcbd_queue_item)*_queue->qsize);
}
s32 tcbd_enqueue(
struct tcbd_queue *_queue, u8 *_chunk, s32 _size,
u8 _subch_id, s32 _type)
{
if (_chunk == NULL || _size <= 0) {
tcbd_debug(DEBUG_ERROR, "Invalid argument!!\n");
return -1;
}
tcpal_lock(&_queue->sem);
if (tcbd_queue_is_full(_queue)) {
tcbd_debug(DEBUG_ERROR, "Queue Full!!\n");
_queue->pointer = 0;
}
if (_queue->q[_queue->rear].buffer <
_queue->q[_queue->front].buffer) {
u32 next_pos_rear =
(u32)_queue->q[_queue->rear].buffer + _size;
u32 curr_pos_front =
(u32)_queue->q[_queue->front].buffer;
if (next_pos_rear > curr_pos_front) {
tcbd_debug(DEBUG_ERROR, "Buffer overflow!!\n");
tcbd_reset_queue(_queue);
tcpal_unlock(&_queue->sem);
return -1;
}
}
_queue->q[_queue->rear].buffer =
_queue->global_buffer + _queue->pointer;
if (_queue->pointer + _size >= _queue->buff_size)
_queue->pointer = 0;
else
_queue->pointer += _size;
memcpy(_queue->q[_queue->rear].buffer, _chunk, _size);
_queue->q[_queue->rear].size = _size;
_queue->q[_queue->rear].type = _type;
_queue->q[_queue->rear].subch_id = _subch_id;
_queue->rear = (_queue->rear + 1) % _queue->qsize;
tcpal_unlock(&_queue->sem);
return 0;
}
s32 tcbd_dequeue(
struct tcbd_queue *_queue, u8 *_chunk, s32 *_size,
u8 *_subch_id, s32 *_type)
{
tcpal_lock(&_queue->sem);
if (tcbd_queue_is_empty(_queue)) {
tcbd_debug(0, "Queue Empty!!\n");
tcpal_unlock(&_queue->sem);
return -1;
}
if (_queue->q[_queue->front].size > *_size) {
tcbd_debug(DEBUG_ERROR,
"insufficient buffer!! size:%d, qsize:%d\n",
*_size, _queue->q[_queue->front].size);
tcpal_unlock(&_queue->sem);
return -1;
}
memcpy(_chunk, _queue->q[_queue->front].buffer,
_queue->q[_queue->front].size);
*_size = _queue->q[_queue->front].size;
if (_type)
*_type = _queue->q[_queue->front].type;
if (_subch_id)
*_subch_id = _queue->q[_queue->front].subch_id;
_queue->front = (_queue->front + 1) % _queue->qsize;
tcbd_debug(0, "pos:%d, size:%d\n", _queue->pointer, *_size);
tcpal_unlock(&_queue->sem);
return 0;
}
s32 tcbd_dequeue_ptr(
struct tcbd_queue *_queue, u8 **_chunk, s32 *_size, s32 *_type)
{
tcpal_lock(&_queue->sem);
if (tcbd_queue_is_empty(_queue)) {
tcbd_debug(0, "Queue Empty!!\n");
tcpal_unlock(&_queue->sem);
return -1;
}
if (_queue->q[_queue->front].size > *_size) {
tcbd_debug(DEBUG_ERROR,
"insufficient buffer!! size:%d, qsize:%d\n",
*_size, _queue->q[_queue->front].size);
tcpal_unlock(&_queue->sem);
return -1;
}
*_chunk = _queue->q[_queue->front].buffer;
*_size = _queue->q[_queue->front].size;
if (_type)
*_type = _queue->q[_queue->front].type;
_queue->front = (_queue->front + 1) % _queue->qsize;
tcbd_debug(0, "pos:%d, size:%d\n", _queue->pointer, *_size);
tcpal_unlock(&_queue->sem);
return 0;
}
s32 tcbd_get_first_queue_ptr(
struct tcbd_queue *_queue, u8 **_chunk, s32 *_size, s32 *_type)
{
tcpal_lock(&_queue->sem);
if (tcbd_queue_is_empty(_queue)) {
tcbd_debug(0, "Queue Empty!!\n");
tcpal_unlock(&_queue->sem);
return -1;
}
*_size = _queue->q[_queue->front].size;
*_chunk = _queue->q[_queue->front].buffer;
if (_type)
*_type = _queue->q[_queue->front].type;
tcbd_debug(0, "pos:%d, size:%d\n", _queue->pointer, *_size);
tcpal_unlock(&_queue->sem);
return 0;
}
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