| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* |
| 3 | * Copyright (C) 2019 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
| 4 | */ |
| 5 | |
| 6 | #include "mt76.h" |
| 7 | |
| 8 | struct sk_buff * |
| 9 | mt76_mcu_msg_alloc(const void *data, int head_len, |
| 10 | int data_len, int tail_len) |
| 11 | { |
| 12 | struct sk_buff *skb; |
| 13 | |
| 14 | skb = alloc_skb(head_len + data_len + tail_len, |
| 15 | GFP_KERNEL); |
| 16 | if (!skb) |
| 17 | return NULL; |
| 18 | |
| 19 | skb_reserve(skb, head_len); |
| 20 | if (data && data_len) |
| 21 | skb_put_data(skb, data, data_len); |
| 22 | |
| 23 | return skb; |
| 24 | } |
| 25 | EXPORT_SYMBOL_GPL(mt76_mcu_msg_alloc); |
| 26 | |
| 27 | /* mmio */ |
| 28 | struct sk_buff *mt76_mcu_get_response(struct mt76_dev *dev, |
| 29 | unsigned long expires) |
| 30 | { |
| 31 | unsigned long timeout; |
| 32 | |
| 33 | if (!time_is_after_jiffies(expires)) |
| 34 | return NULL; |
| 35 | |
| 36 | timeout = expires - jiffies; |
| 37 | wait_event_timeout(dev->mmio.mcu.wait, |
| 38 | !skb_queue_empty(&dev->mmio.mcu.res_q), |
| 39 | timeout); |
| 40 | return skb_dequeue(&dev->mmio.mcu.res_q); |
| 41 | } |
| 42 | EXPORT_SYMBOL_GPL(mt76_mcu_get_response); |
| 43 | |
| 44 | void mt76_mcu_rx_event(struct mt76_dev *dev, struct sk_buff *skb) |
| 45 | { |
| 46 | skb_queue_tail(&dev->mmio.mcu.res_q, skb); |
| 47 | wake_up(&dev->mmio.mcu.wait); |
| 48 | } |
| 49 | EXPORT_SYMBOL_GPL(mt76_mcu_rx_event); |