/* * 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);