diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mcu.c')
-rw-r--r-- | drivers/net/wireless/mediatek/mt76/mcu.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mcu.c b/drivers/net/wireless/mediatek/mt76/mcu.c new file mode 100644 index 0000000..2a97668 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mcu.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (C) 2019 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> + */ + +#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); |