145 lines
4.6 KiB
C
145 lines
4.6 KiB
C
/****************************************************************************
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* drivers/wireless/ieee80211/bcm43xxx/bcmf_interface.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/signal.h>
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#include "bcmf_interface.h"
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#include "debug.h"
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#include "assert.h"
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static bcmf_interface_frame_t
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g_pktframes[CONFIG_IEEE80211_BROADCOM_FRAME_POOL_SIZE];
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static struct list_node free_interface_frames; /* Queue of available frames */
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: bcmf_initialize_interface_frames
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****************************************************************************/
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void bcmf_initialize_interface_frames(void)
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{
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int i;
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list_initialize(&free_interface_frames);
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for (i = 0; i < CONFIG_IEEE80211_BROADCOM_FRAME_POOL_SIZE; ++i)
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{
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list_add_tail(&free_interface_frames, &g_pktframes[i].list_entry);
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}
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}
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/****************************************************************************
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* Name: bcmf_interface_free_frame
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****************************************************************************/
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void bcmf_interface_free_frame(FAR struct bcmf_dev_s *priv,
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bcmf_interface_frame_t *iframe)
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{
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FAR bcmf_interface_dev_t *ibus = (FAR bcmf_interface_dev_t *) priv->bus;
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if (nxsem_wait_uninterruptible(&ibus->queue_mutex) < 0)
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{
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DEBUGPANIC();
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}
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list_add_head(&free_interface_frames, &iframe->list_entry);
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if (iframe->tx)
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{
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ibus->tx_queue_count--;
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}
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nxsem_post(&ibus->queue_mutex);
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}
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/****************************************************************************
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* Name: bcmf_interface_allocate_frame
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****************************************************************************/
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bcmf_interface_frame_t
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*bcmf_interface_allocate_frame(FAR struct bcmf_dev_s *priv,
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bool block,
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bool tx)
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{
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FAR bcmf_interface_dev_t *ibus = (FAR bcmf_interface_dev_t *) priv->bus;
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bcmf_interface_frame_t *iframe;
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while (1)
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{
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if (nxsem_wait_uninterruptible(&ibus->queue_mutex) < 0)
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{
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DEBUGPANIC();
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}
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if (!tx ||
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ibus->tx_queue_count <
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CONFIG_IEEE80211_BROADCOM_FRAME_POOL_SIZE / 2)
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{
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if ((iframe = list_remove_head_type(&free_interface_frames,
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bcmf_interface_frame_t,
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list_entry)) != NULL)
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{
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if (tx)
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{
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ibus->tx_queue_count++;
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}
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nxsem_post(&ibus->queue_mutex);
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break;
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}
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}
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nxsem_post(&ibus->queue_mutex);
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if (!block)
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{
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wlinfo("No avail buffer\n");
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return NULL;
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}
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nxsig_usleep(10 * 1000);
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}
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#if defined(CONFIG_IEEE80211_BROADCOM_FULLMAC_GSPI)
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iframe->header.len = CONFIG_IEEE80211_BROADCOM_FULLMAC_GSPI_MAX_FRAME;
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#else
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iframe->header.len = HEADER_SIZE + MAX_NETDEV_PKTSIZE +
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CONFIG_NET_GUARDSIZE;
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#endif
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iframe->header.base = iframe->data;
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iframe->header.data = iframe->data;
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iframe->tx = tx;
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return iframe;
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}
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