1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2019 MediaTek Inc.
3 *
4 * Author: Ryder Lee <ryder.lee@mediatek.com>
5 * Roy Luo <royluo@google.com>
6 * Lorenzo Bianconi <lorenzo@kernel.org>
7 * Felix Fietkau <nbd@nbd.name>
8 */
9
10 #include "mt7615.h"
11 #include "../dma.h"
12 #include "mac.h"
13
14 static int
mt7622_init_tx_queues_multi(struct mt7615_dev * dev)15 mt7622_init_tx_queues_multi(struct mt7615_dev *dev)
16 {
17 static const u8 wmm_queue_map[] = {
18 [IEEE80211_AC_BK] = MT7622_TXQ_AC0,
19 [IEEE80211_AC_BE] = MT7622_TXQ_AC1,
20 [IEEE80211_AC_VI] = MT7622_TXQ_AC2,
21 [IEEE80211_AC_VO] = MT7622_TXQ_AC3,
22 };
23 int ret;
24 int i;
25
26 for (i = 0; i < ARRAY_SIZE(wmm_queue_map); i++) {
27 ret = mt76_init_tx_queue(&dev->mphy, i, wmm_queue_map[i],
28 MT7615_TX_RING_SIZE / 2,
29 MT_TX_RING_BASE, 0);
30 if (ret)
31 return ret;
32 }
33
34 ret = mt76_init_tx_queue(&dev->mphy, MT_TXQ_PSD, MT7622_TXQ_MGMT,
35 MT7615_TX_MGMT_RING_SIZE,
36 MT_TX_RING_BASE, 0);
37 if (ret)
38 return ret;
39
40 return mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_WM, MT7622_TXQ_MCU,
41 MT7615_TX_MCU_RING_SIZE, MT_TX_RING_BASE);
42 }
43
44 static int
mt7615_init_tx_queues(struct mt7615_dev * dev)45 mt7615_init_tx_queues(struct mt7615_dev *dev)
46 {
47 int ret;
48
49 ret = mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_FWDL, MT7615_TXQ_FWDL,
50 MT7615_TX_FWDL_RING_SIZE, MT_TX_RING_BASE);
51 if (ret)
52 return ret;
53
54 if (!is_mt7615(&dev->mt76))
55 return mt7622_init_tx_queues_multi(dev);
56
57 ret = mt76_connac_init_tx_queues(&dev->mphy, 0, MT7615_TX_RING_SIZE,
58 MT_TX_RING_BASE, 0);
59 if (ret)
60 return ret;
61
62 return mt76_init_mcu_queue(&dev->mt76, MT_MCUQ_WM, MT7615_TXQ_MCU,
63 MT7615_TX_MCU_RING_SIZE, MT_TX_RING_BASE);
64 }
65
mt7615_poll_tx(struct napi_struct * napi,int budget)66 static int mt7615_poll_tx(struct napi_struct *napi, int budget)
67 {
68 struct mt7615_dev *dev;
69
70 dev = container_of(napi, struct mt7615_dev, mt76.tx_napi);
71 if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
72 napi_complete(napi);
73 queue_work(dev->mt76.wq, &dev->pm.wake_work);
74 return 0;
75 }
76
77 mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_WM], false);
78 if (napi_complete(napi))
79 mt76_connac_irq_enable(&dev->mt76,
80 mt7615_tx_mcu_int_mask(dev));
81
82 mt76_connac_pm_unref(&dev->mphy, &dev->pm);
83
84 return 0;
85 }
86
mt7615_poll_rx(struct napi_struct * napi,int budget)87 static int mt7615_poll_rx(struct napi_struct *napi, int budget)
88 {
89 struct mt7615_dev *dev;
90 int done;
91
92 dev = container_of(napi->dev, struct mt7615_dev, mt76.napi_dev);
93
94 if (!mt76_connac_pm_ref(&dev->mphy, &dev->pm)) {
95 napi_complete(napi);
96 queue_work(dev->mt76.wq, &dev->pm.wake_work);
97 return 0;
98 }
99 done = mt76_dma_rx_poll(napi, budget);
100 mt76_connac_pm_unref(&dev->mphy, &dev->pm);
101
102 return done;
103 }
104
mt7615_wait_pdma_busy(struct mt7615_dev * dev)105 int mt7615_wait_pdma_busy(struct mt7615_dev *dev)
106 {
107 struct mt76_dev *mdev = &dev->mt76;
108
109 if (!is_mt7663(mdev)) {
110 u32 mask = MT_PDMA_TX_BUSY | MT_PDMA_RX_BUSY;
111 u32 reg = mt7615_reg_map(dev, MT_PDMA_BUSY);
112
113 if (!mt76_poll_msec(dev, reg, mask, 0, 1000)) {
114 dev_err(mdev->dev, "PDMA engine busy\n");
115 return -EIO;
116 }
117
118 return 0;
119 }
120
121 if (!mt76_poll_msec(dev, MT_PDMA_BUSY_STATUS,
122 MT_PDMA_TX_IDX_BUSY, 0, 1000)) {
123 dev_err(mdev->dev, "PDMA engine tx busy\n");
124 return -EIO;
125 }
126
127 if (!mt76_poll_msec(dev, MT_PSE_PG_INFO,
128 MT_PSE_SRC_CNT, 0, 1000)) {
129 dev_err(mdev->dev, "PSE engine busy\n");
130 return -EIO;
131 }
132
133 if (!mt76_poll_msec(dev, MT_PDMA_BUSY_STATUS,
134 MT_PDMA_BUSY_IDX, 0, 1000)) {
135 dev_err(mdev->dev, "PDMA engine busy\n");
136 return -EIO;
137 }
138
139 return 0;
140 }
141
mt7622_dma_sched_init(struct mt7615_dev * dev)142 static void mt7622_dma_sched_init(struct mt7615_dev *dev)
143 {
144 u32 reg = mt7615_reg_map(dev, MT_DMASHDL_BASE);
145 int i;
146
147 mt76_rmw(dev, reg + MT_DMASHDL_PKT_MAX_SIZE,
148 MT_DMASHDL_PKT_MAX_SIZE_PLE | MT_DMASHDL_PKT_MAX_SIZE_PSE,
149 FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PLE, 1) |
150 FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PSE, 8));
151
152 for (i = 0; i <= 5; i++)
153 mt76_wr(dev, reg + MT_DMASHDL_GROUP_QUOTA(i),
154 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x10) |
155 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x800));
156
157 mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(0), 0x42104210);
158 mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(1), 0x42104210);
159 mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(2), 0x5);
160 mt76_wr(dev, reg + MT_DMASHDL_Q_MAP(3), 0);
161
162 mt76_wr(dev, reg + MT_DMASHDL_SCHED_SET0, 0x6012345f);
163 mt76_wr(dev, reg + MT_DMASHDL_SCHED_SET1, 0xedcba987);
164 }
165
mt7663_dma_sched_init(struct mt7615_dev * dev)166 static void mt7663_dma_sched_init(struct mt7615_dev *dev)
167 {
168 int i;
169
170 mt76_rmw(dev, MT_DMA_SHDL(MT_DMASHDL_PKT_MAX_SIZE),
171 MT_DMASHDL_PKT_MAX_SIZE_PLE | MT_DMASHDL_PKT_MAX_SIZE_PSE,
172 FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PLE, 1) |
173 FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PSE, 8));
174
175 /* enable refill control group 0, 1, 2, 4, 5 */
176 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_REFILL), 0xffc80000);
177 /* enable group 0, 1, 2, 4, 5, 15 */
178 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_OPTIONAL), 0x70068037);
179
180 /* each group min quota must larger then PLE_PKT_MAX_SIZE_NUM */
181 for (i = 0; i < 5; i++)
182 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(i)),
183 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x40) |
184 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x800));
185 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(5)),
186 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x40) |
187 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x40));
188 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(15)),
189 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x20) |
190 FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x20));
191
192 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(0)), 0x42104210);
193 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(1)), 0x42104210);
194 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(2)), 0x00050005);
195 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(3)), 0);
196 /* ALTX0 and ALTX1 QID mapping to group 5 */
197 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET0), 0x6012345f);
198 mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET1), 0xedcba987);
199 }
200
mt7615_dma_start(struct mt7615_dev * dev)201 void mt7615_dma_start(struct mt7615_dev *dev)
202 {
203 /* start dma engine */
204 mt76_set(dev, MT_WPDMA_GLO_CFG,
205 MT_WPDMA_GLO_CFG_TX_DMA_EN |
206 MT_WPDMA_GLO_CFG_RX_DMA_EN |
207 MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE);
208
209 if (is_mt7622(&dev->mt76))
210 mt7622_dma_sched_init(dev);
211
212 if (is_mt7663(&dev->mt76)) {
213 mt7663_dma_sched_init(dev);
214
215 mt76_wr(dev, MT_MCU2HOST_INT_ENABLE, MT7663_MCU_CMD_ERROR_MASK);
216 }
217
218 }
219
mt7615_dma_init(struct mt7615_dev * dev)220 int mt7615_dma_init(struct mt7615_dev *dev)
221 {
222 int rx_ring_size = MT7615_RX_RING_SIZE;
223 u32 mask;
224 int ret;
225
226 mt76_dma_attach(&dev->mt76);
227
228 mt76_wr(dev, MT_WPDMA_GLO_CFG,
229 MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE |
230 MT_WPDMA_GLO_CFG_FIFO_LITTLE_ENDIAN |
231 MT_WPDMA_GLO_CFG_OMIT_TX_INFO);
232
233 mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
234 MT_WPDMA_GLO_CFG_TX_BT_SIZE_BIT0, 0x1);
235
236 mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
237 MT_WPDMA_GLO_CFG_TX_BT_SIZE_BIT21, 0x1);
238
239 mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
240 MT_WPDMA_GLO_CFG_DMA_BURST_SIZE, 0x3);
241
242 mt76_rmw_field(dev, MT_WPDMA_GLO_CFG,
243 MT_WPDMA_GLO_CFG_MULTI_DMA_EN, 0x3);
244
245 if (is_mt7615(&dev->mt76)) {
246 mt76_set(dev, MT_WPDMA_GLO_CFG,
247 MT_WPDMA_GLO_CFG_FIRST_TOKEN_ONLY);
248
249 mt76_wr(dev, MT_WPDMA_GLO_CFG1, 0x1);
250 mt76_wr(dev, MT_WPDMA_TX_PRE_CFG, 0xf0000);
251 mt76_wr(dev, MT_WPDMA_RX_PRE_CFG, 0xf7f0000);
252 mt76_wr(dev, MT_WPDMA_ABT_CFG, 0x4000026);
253 mt76_wr(dev, MT_WPDMA_ABT_CFG1, 0x18811881);
254 mt76_set(dev, 0x7158, BIT(16));
255 mt76_clear(dev, 0x7000, BIT(23));
256 }
257
258 mt76_wr(dev, MT_WPDMA_RST_IDX, ~0);
259
260 ret = mt7615_init_tx_queues(dev);
261 if (ret)
262 return ret;
263
264 /* init rx queues */
265 ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MCU], 1,
266 MT7615_RX_MCU_RING_SIZE, MT_RX_BUF_SIZE,
267 MT_RX_RING_BASE);
268 if (ret)
269 return ret;
270
271 if (!is_mt7615(&dev->mt76))
272 rx_ring_size /= 2;
273
274 ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MAIN], 0,
275 rx_ring_size, MT_RX_BUF_SIZE, MT_RX_RING_BASE);
276 if (ret)
277 return ret;
278
279 mt76_wr(dev, MT_DELAY_INT_CFG, 0);
280
281 ret = mt76_init_queues(dev, mt7615_poll_rx);
282 if (ret < 0)
283 return ret;
284
285 netif_napi_add_tx(&dev->mt76.tx_napi_dev, &dev->mt76.tx_napi,
286 mt7615_poll_tx);
287 napi_enable(&dev->mt76.tx_napi);
288
289 mt76_poll(dev, MT_WPDMA_GLO_CFG,
290 MT_WPDMA_GLO_CFG_TX_DMA_BUSY |
291 MT_WPDMA_GLO_CFG_RX_DMA_BUSY, 0, 1000);
292
293 /* enable interrupts for TX/RX rings */
294
295 mask = MT_INT_RX_DONE_ALL | mt7615_tx_mcu_int_mask(dev);
296 if (is_mt7663(&dev->mt76))
297 mask |= MT7663_INT_MCU_CMD;
298 else
299 mask |= MT_INT_MCU_CMD;
300
301 mt76_connac_irq_enable(&dev->mt76, mask);
302
303 mt7615_dma_start(dev);
304
305 return 0;
306 }
307
mt7615_dma_cleanup(struct mt7615_dev * dev)308 void mt7615_dma_cleanup(struct mt7615_dev *dev)
309 {
310 mt76_clear(dev, MT_WPDMA_GLO_CFG,
311 MT_WPDMA_GLO_CFG_TX_DMA_EN |
312 MT_WPDMA_GLO_CFG_RX_DMA_EN);
313 mt76_set(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_SW_RESET);
314
315 mt76_dma_cleanup(&dev->mt76);
316 }
317