Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/contrib/dev/mediatek/mt76/mt76x2/mac.c
48525 views
1
// SPDX-License-Identifier: ISC

2
/*

3
 * Copyright (C) 2016 Felix Fietkau <[email protected]>

4
 * Copyright (C) 2018 Lorenzo Bianconi <[email protected]>

5
 */

6


7
#include "mt76x2.h"

8


9
void mt76x2_mac_stop(struct mt76x02_dev *dev, bool force)

10
{

11
	bool stopped = false;

12
	u32 rts_cfg;

13
	int i;

14


15
	mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);

16
	mt76_clear(dev, MT_TXOP_HLDR_ET, MT_TXOP_HLDR_TX40M_BLK_EN);

17


18
	mt76_wr(dev, MT_MAC_SYS_CTRL, 0);

19


20
	rts_cfg = mt76_rr(dev, MT_TX_RTS_CFG);

21
	mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg & ~MT_TX_RTS_CFG_RETRY_LIMIT);

22


23
	/* Wait for MAC to become idle */

24
	for (i = 0; i < 300; i++) {

25
		if ((mt76_rr(dev, MT_MAC_STATUS) &

26
		     (MT_MAC_STATUS_RX | MT_MAC_STATUS_TX)) ||

27
		    mt76_rr(dev, MT_BBP(IBI, 12))) {

28
			udelay(1);

29
			continue;

30
		}

31


32
		stopped = true;

33
		break;

34
	}

35


36
	if (force && !stopped) {

37
		mt76_set(dev, MT_BBP(CORE, 4), BIT(1));

38
		mt76_clear(dev, MT_BBP(CORE, 4), BIT(1));

39


40
		mt76_set(dev, MT_BBP(CORE, 4), BIT(0));

41
		mt76_clear(dev, MT_BBP(CORE, 4), BIT(0));

42
	}

43


44
	mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg);

45
}

46
EXPORT_SYMBOL_GPL(mt76x2_mac_stop);

47


48