| // SPDX-License-Identifier: ISC |
| /* |
| * Copyright (C) 2019 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
| */ |
| |
| #include "mt76.h" |
| |
| struct sk_buff * |
| mt76_mcu_msg_alloc(struct mt76_dev *dev, const void *data, |
| int data_len) |
| { |
| const struct mt76_mcu_ops *ops = dev->mcu_ops; |
| int length = ops->headroom + data_len + ops->tailroom; |
| struct sk_buff *skb; |
| |
| skb = alloc_skb(length, GFP_KERNEL); |
| if (!skb) |
| return NULL; |
| |
| memset(skb->head, 0, length); |
| skb_reserve(skb, ops->headroom); |
| |
| if (data && data_len) |
| skb_put_data(skb, data, data_len); |
| |
| return skb; |
| } |
| EXPORT_SYMBOL_GPL(mt76_mcu_msg_alloc); |
| |
| 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->mcu.wait, |
| (!skb_queue_empty(&dev->mcu.res_q) || |
| test_bit(MT76_MCU_RESET, &dev->phy.state)), |
| timeout); |
| return skb_dequeue(&dev->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->mcu.res_q, skb); |
| wake_up(&dev->mcu.wait); |
| } |
| EXPORT_SYMBOL_GPL(mt76_mcu_rx_event); |
