1 files changed, 60 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 000000000000..dbb57b593a87
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mcu.c
@@ -0,0 +1,60 @@
+/*
+ * 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);