1// SPDX-License-Identifier: ISC
2/* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */
3
4#include "mt7615.h"
5#include "eeprom.h"
6#include "mcu.h"
7
8enum {
9	TM_CHANGED_TXPOWER_CTRL,
10	TM_CHANGED_TXPOWER,
11	TM_CHANGED_FREQ_OFFSET,
12
13	/* must be last */
14	NUM_TM_CHANGED
15};
16
17
18static const u8 tm_change_map[] = {
19	[TM_CHANGED_TXPOWER_CTRL] = MT76_TM_ATTR_TX_POWER_CONTROL,
20	[TM_CHANGED_TXPOWER] = MT76_TM_ATTR_TX_POWER,
21	[TM_CHANGED_FREQ_OFFSET] = MT76_TM_ATTR_FREQ_OFFSET,
22};
23
24static const u32 reg_backup_list[] = {
25	MT_WF_PHY_RFINTF3_0(0),
26	MT_WF_PHY_RFINTF3_0(1),
27	MT_WF_PHY_RFINTF3_0(2),
28	MT_WF_PHY_RFINTF3_0(3),
29	MT_ANT_SWITCH_CON(2),
30	MT_ANT_SWITCH_CON(3),
31	MT_ANT_SWITCH_CON(4),
32	MT_ANT_SWITCH_CON(6),
33	MT_ANT_SWITCH_CON(7),
34	MT_ANT_SWITCH_CON(8),
35};
36
37static const struct {
38	u16 wf;
39	u16 reg;
40} rf_backup_list[] = {
41	{ 0, 0x48 },
42	{ 1, 0x48 },
43	{ 2, 0x48 },
44	{ 3, 0x48 },
45};
46
47static int
48mt7615_tm_set_tx_power(struct mt7615_phy *phy)
49{
50	struct mt7615_dev *dev = phy->dev;
51	struct mt76_phy *mphy = phy->mt76;
52	int i, ret, n_chains = hweight8(mphy->antenna_mask);
53	struct cfg80211_chan_def *chandef = &mphy->chandef;
54	int freq = chandef->center_freq1, len, target_chains;
55	u8 *data, *eep = (u8 *)dev->mt76.eeprom.data;
56	enum nl80211_band band = chandef->chan->band;
57	struct sk_buff *skb;
58	struct {
59		u8 center_chan;
60		u8 dbdc_idx;
61		u8 band;
62		u8 rsv;
63	} __packed req_hdr = {
64		.center_chan = ieee80211_frequency_to_channel(freq),
65		.band = band,
66		.dbdc_idx = phy != &dev->phy,
67	};
68	u8 *tx_power = NULL;
69
70	if (dev->mt76.test.state != MT76_TM_STATE_OFF)
71		tx_power = dev->mt76.test.tx_power;
72
73	len = MT7615_EE_MAX - MT_EE_NIC_CONF_0;
74	skb = mt76_mcu_msg_alloc(&dev->mt76, NULL, sizeof(req_hdr) + len);
75	if (!skb)
76		return -ENOMEM;
77
78	skb_put_data(skb, &req_hdr, sizeof(req_hdr));
79	data = skb_put_data(skb, eep + MT_EE_NIC_CONF_0, len);
80
81	target_chains = mt7615_ext_pa_enabled(dev, band) ? 1 : n_chains;
82	for (i = 0; i < target_chains; i++) {
83		ret = mt7615_eeprom_get_target_power_index(dev, chandef->chan, i);
84		if (ret < 0) {
85			dev_kfree_skb(skb);
86			return -EINVAL;
87		}
88
89		if (tx_power && tx_power[i])
90			data[ret - MT_EE_NIC_CONF_0] = tx_power[i];
91	}
92
93	return __mt76_mcu_skb_send_msg(&dev->mt76, skb,
94				       MCU_EXT_CMD_SET_TX_POWER_CTRL, false);
95}
96
97static void
98mt7615_tm_reg_backup_restore(struct mt7615_dev *dev)
99{
100	u32 *b = dev->test.reg_backup;
101	int n_regs = ARRAY_SIZE(reg_backup_list);
102	int n_rf_regs = ARRAY_SIZE(rf_backup_list);
103	int i;
104
105	if (dev->mt76.test.state == MT76_TM_STATE_OFF) {
106		for (i = 0; i < n_regs; i++)
107			mt76_wr(dev, reg_backup_list[i], b[i]);
108
109		for (i = 0; i < n_rf_regs; i++)
110			mt7615_rf_wr(dev, rf_backup_list[i].wf,
111				     rf_backup_list[i].reg, b[n_regs + i]);
112		return;
113	}
114
115	if (b)
116		return;
117
118	b = devm_kzalloc(dev->mt76.dev, 4 * (n_regs + n_rf_regs),
119			 GFP_KERNEL);
120	if (!b)
121		return;
122
123	dev->test.reg_backup = b;
124	for (i = 0; i < n_regs; i++)
125		b[i] = mt76_rr(dev, reg_backup_list[i]);
126	for (i = 0; i < n_rf_regs; i++)
127		b[n_regs + i] = mt7615_rf_rr(dev, rf_backup_list[i].wf,
128					     rf_backup_list[i].reg);
129}
130
131
132static void
133mt7615_tm_init_phy(struct mt7615_dev *dev, struct mt7615_phy *phy)
134{
135	unsigned int total_flags = ~0;
136
137	if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
138		return;
139
140	mutex_unlock(&dev->mt76.mutex);
141	mt7615_set_channel(phy);
142	mt7615_ops.configure_filter(phy->mt76->hw, 0, &total_flags, 0);
143	mutex_lock(&dev->mt76.mutex);
144
145	mt7615_tm_reg_backup_restore(dev);
146}
147
148static void
149mt7615_tm_init(struct mt7615_dev *dev)
150{
151	mt7615_tm_init_phy(dev, &dev->phy);
152
153	if (dev->mt76.phy2)
154		mt7615_tm_init_phy(dev, dev->mt76.phy2->priv);
155}
156
157static void
158mt7615_tm_set_rx_enable(struct mt7615_dev *dev, bool en)
159{
160	u32 rqcr_mask = (MT_ARB_RQCR_RX_START |
161			 MT_ARB_RQCR_RXV_START |
162			 MT_ARB_RQCR_RXV_R_EN |
163			 MT_ARB_RQCR_RXV_T_EN) *
164			(BIT(0) | BIT(MT_ARB_RQCR_BAND_SHIFT));
165
166	if (en) {
167		mt76_clear(dev, MT_ARB_SCR,
168			   MT_ARB_SCR_RX0_DISABLE | MT_ARB_SCR_RX1_DISABLE);
169		mt76_set(dev, MT_ARB_RQCR, rqcr_mask);
170	} else {
171		mt76_set(dev, MT_ARB_SCR,
172			 MT_ARB_SCR_RX0_DISABLE | MT_ARB_SCR_RX1_DISABLE);
173		mt76_clear(dev, MT_ARB_RQCR, rqcr_mask);
174	}
175}
176
177static void
178mt7615_tm_set_tx_antenna(struct mt7615_dev *dev, bool en)
179{
180	struct mt76_testmode_data *td = &dev->mt76.test;
181	u8 mask = td->tx_antenna_mask;
182	int i;
183
184	if (!mask)
185		return;
186
187	if (!en)
188		mask = dev->phy.chainmask;
189
190	for (i = 0; i < 4; i++) {
191		mt76_rmw_field(dev, MT_WF_PHY_RFINTF3_0(i),
192			       MT_WF_PHY_RFINTF3_0_ANT,
193			       (td->tx_antenna_mask & BIT(i)) ? 0 : 0xa);
194
195	}
196
197	/* 2.4 GHz band */
198	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(3), MT_ANT_SWITCH_CON_MODE(0),
199		       (td->tx_antenna_mask & BIT(0)) ? 0x8 : 0x1b);
200	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(4), MT_ANT_SWITCH_CON_MODE(2),
201		       (td->tx_antenna_mask & BIT(1)) ? 0xe : 0x1b);
202	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(6), MT_ANT_SWITCH_CON_MODE1(0),
203		       (td->tx_antenna_mask & BIT(2)) ? 0x0 : 0xf);
204	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(7), MT_ANT_SWITCH_CON_MODE1(2),
205		       (td->tx_antenna_mask & BIT(3)) ? 0x6 : 0xf);
206
207	/* 5 GHz band */
208	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(4), MT_ANT_SWITCH_CON_MODE(1),
209		       (td->tx_antenna_mask & BIT(0)) ? 0xd : 0x1b);
210	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(2), MT_ANT_SWITCH_CON_MODE(3),
211		       (td->tx_antenna_mask & BIT(1)) ? 0x13 : 0x1b);
212	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(7), MT_ANT_SWITCH_CON_MODE1(1),
213		       (td->tx_antenna_mask & BIT(2)) ? 0x5 : 0xf);
214	mt76_rmw_field(dev, MT_ANT_SWITCH_CON(8), MT_ANT_SWITCH_CON_MODE1(3),
215		       (td->tx_antenna_mask & BIT(3)) ? 0xb : 0xf);
216
217	for (i = 0; i < 4; i++) {
218		u32 val;
219
220		val = mt7615_rf_rr(dev, i, 0x48);
221		val &= ~(0x3ff << 20);
222		if (td->tx_antenna_mask & BIT(i))
223			val |= 3 << 20;
224		else
225			val |= (2 << 28) | (2 << 26) | (8 << 20);
226		mt7615_rf_wr(dev, i, 0x48, val);
227	}
228}
229
230static void
231mt7615_tm_set_tx_frames(struct mt7615_dev *dev, bool en)
232{
233	struct ieee80211_tx_info *info;
234	struct sk_buff *skb = dev->mt76.test.tx_skb;
235
236	mt7615_mcu_set_chan_info(&dev->phy, MCU_EXT_CMD_SET_RX_PATH);
237	mt7615_tm_set_tx_antenna(dev, en);
238	mt7615_tm_set_rx_enable(dev, !en);
239	if (!en || !skb)
240		return;
241
242	info = IEEE80211_SKB_CB(skb);
243	info->control.vif = dev->phy.monitor_vif;
244}
245
246static void
247mt7615_tm_update_params(struct mt7615_dev *dev, u32 changed)
248{
249	struct mt76_testmode_data *td = &dev->mt76.test;
250	bool en = dev->mt76.test.state != MT76_TM_STATE_OFF;
251
252	if (changed & BIT(TM_CHANGED_TXPOWER_CTRL))
253		mt7615_mcu_set_test_param(dev, MCU_ATE_SET_TX_POWER_CONTROL,
254					  en, en && td->tx_power_control);
255	if (changed & BIT(TM_CHANGED_FREQ_OFFSET))
256		mt7615_mcu_set_test_param(dev, MCU_ATE_SET_FREQ_OFFSET,
257					  en, en ? td->freq_offset : 0);
258	if (changed & BIT(TM_CHANGED_TXPOWER))
259		mt7615_tm_set_tx_power(&dev->phy);
260}
261
262static int
263mt7615_tm_set_state(struct mt76_dev *mdev, enum mt76_testmode_state state)
264{
265	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
266	struct mt76_testmode_data *td = &mdev->test;
267	enum mt76_testmode_state prev_state = td->state;
268
269	mdev->test.state = state;
270
271	if (prev_state == MT76_TM_STATE_TX_FRAMES)
272		mt7615_tm_set_tx_frames(dev, false);
273	else if (state == MT76_TM_STATE_TX_FRAMES)
274		mt7615_tm_set_tx_frames(dev, true);
275
276	if (state <= MT76_TM_STATE_IDLE)
277		mt7615_tm_init(dev);
278
279	if ((state == MT76_TM_STATE_IDLE &&
280	     prev_state == MT76_TM_STATE_OFF) ||
281	    (state == MT76_TM_STATE_OFF &&
282	     prev_state == MT76_TM_STATE_IDLE)) {
283		u32 changed = 0;
284		int i;
285
286		for (i = 0; i < ARRAY_SIZE(tm_change_map); i++) {
287			u16 cur = tm_change_map[i];
288
289			if (td->param_set[cur / 32] & BIT(cur % 32))
290				changed |= BIT(i);
291		}
292
293		mt7615_tm_update_params(dev, changed);
294	}
295
296	return 0;
297}
298
299static int
300mt7615_tm_set_params(struct mt76_dev *mdev, struct nlattr **tb,
301		     enum mt76_testmode_state new_state)
302{
303	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
304	struct mt76_testmode_data *td = &dev->mt76.test;
305	u32 changed = 0;
306	int i;
307
308	BUILD_BUG_ON(NUM_TM_CHANGED >= 32);
309
310	if (new_state == MT76_TM_STATE_OFF ||
311	    td->state == MT76_TM_STATE_OFF)
312		return 0;
313
314	if (td->tx_antenna_mask & ~dev->phy.chainmask)
315		return -EINVAL;
316
317	for (i = 0; i < ARRAY_SIZE(tm_change_map); i++) {
318		if (tb[tm_change_map[i]])
319			changed |= BIT(i);
320	}
321
322	mt7615_tm_update_params(dev, changed);
323
324	return 0;
325}
326
327static int
328mt7615_tm_dump_stats(struct mt76_dev *mdev, struct sk_buff *msg)
329{
330	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
331	void *rx, *rssi;
332	int i;
333
334	rx = nla_nest_start(msg, MT76_TM_STATS_ATTR_LAST_RX);
335	if (!rx)
336		return -ENOMEM;
337
338	if (nla_put_s32(msg, MT76_TM_RX_ATTR_FREQ_OFFSET, dev->test.last_freq_offset) ||
339	    nla_put_s32(msg, MT76_TM_RX_ATTR_IB_RSSI, dev->test.last_ib_rssi) ||
340	    nla_put_s32(msg, MT76_TM_RX_ATTR_WB_RSSI, dev->test.last_wb_rssi))
341		return -ENOMEM;
342
343	rssi = nla_nest_start(msg, MT76_TM_RX_ATTR_RCPI);
344	if (!rssi)
345		return -ENOMEM;
346
347	for (i = 0; i < ARRAY_SIZE(dev->test.last_rcpi); i++)
348		if (nla_put_u8(msg, i, dev->test.last_rcpi[i]))
349			return -ENOMEM;
350
351	nla_nest_end(msg, rssi);
352
353	nla_nest_end(msg, rx);
354
355	return 0;
356}
357
358const struct mt76_testmode_ops mt7615_testmode_ops = {
359	.set_state = mt7615_tm_set_state,
360	.set_params = mt7615_tm_set_params,
361	.dump_stats = mt7615_tm_dump_stats,
362};
363