/*
 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/delay.h>
#include "mt76x2.h"
#include "mt76x2_trace.h"

void mt76x2_set_irq_mask(struct mt76x2_dev *dev, u32 clear, u32 set)
{
	unsigned long flags;

	spin_lock_irqsave(&dev->irq_lock, flags);
	dev->irqmask &= ~clear;
	dev->irqmask |= set;
	mt76_wr(dev, MT_INT_MASK_CSR, dev->irqmask);
	spin_unlock_irqrestore(&dev->irq_lock, flags);
}

void mt76x2_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
{
	struct mt76x2_dev *dev = container_of(mdev, struct mt76x2_dev, mt76);
	mt76x2_irq_enable(dev, MT_INT_RX_DONE(q));
}

irqreturn_t mt76x2_irq_handler(int irq, void *dev_instance)
{
	struct mt76x2_dev *dev = dev_instance;
	u32 intr;

	intr = mt76_rr(dev, MT_INT_SOURCE_CSR);
	mt76_wr(dev, MT_INT_SOURCE_CSR, intr);

	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state))
		return IRQ_NONE;

	trace_dev_irq(dev, intr, dev->irqmask);

	intr &= dev->irqmask;

	if (intr & MT_INT_TX_DONE_ALL) {
		mt76x2_irq_disable(dev, MT_INT_TX_DONE_ALL);
		tasklet_schedule(&dev->tx_tasklet);
	}

	if (intr & MT_INT_RX_DONE(0)) {
		mt76x2_irq_disable(dev, MT_INT_RX_DONE(0));
		napi_schedule(&dev->mt76.napi[0]);
	}

	if (intr & MT_INT_RX_DONE(1)) {
		mt76x2_irq_disable(dev, MT_INT_RX_DONE(1));
		napi_schedule(&dev->mt76.napi[1]);
	}

	if (intr & MT_INT_PRE_TBTT)
		tasklet_schedule(&dev->pre_tbtt_tasklet);

	/* send buffered multicast frames now */
	if (intr & MT_INT_TBTT)
		mt76_queue_kick(dev, &dev->mt76.q_tx[MT_TXQ_PSD]);

	if (intr & MT_INT_TX_STAT) {
		mt76x2_mac_poll_tx_status(dev, true);
		tasklet_schedule(&dev->tx_tasklet);
	}

	return IRQ_HANDLED;
}