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/*
* Copyright (C) 2019 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "mt76.h"
struct sk_buff *
mt76_mcu_msg_alloc(const void *data, int head_len,
int data_len, int tail_len)
{
struct sk_buff *skb;
skb = alloc_skb(head_len + data_len + tail_len,
GFP_KERNEL);
if (!skb)
return NULL;
skb_reserve(skb, head_len);
if (data && data_len)
skb_put_data(skb, data, data_len);
return skb;
}
EXPORT_SYMBOL_GPL(mt76_mcu_msg_alloc);
/* mmio */
struct sk_buff *mt76_mcu_get_response(struct mt76_dev *dev,
unsigned long expires)
{
unsigned long timeout;
if (!time_is_after_jiffies(expires))
return NULL;
timeout = expires - jiffies;
wait_event_timeout(dev->mmio.mcu.wait,
!skb_queue_empty(&dev->mmio.mcu.res_q),
timeout);
return skb_dequeue(&dev->mmio.mcu.res_q);
}
EXPORT_SYMBOL_GPL(mt76_mcu_get_response);
void mt76_mcu_rx_event(struct mt76_dev *dev, struct sk_buff *skb)
{
skb_queue_tail(&dev->mmio.mcu.res_q, skb);
wake_up(&dev->mmio.mcu.wait);
}
EXPORT_SYMBOL_GPL(mt76_mcu_rx_event);
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