1 files changed, 52 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 000000000..ade61a533
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mcu.c
@@ -0,0 +1,52 @@
+// 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);