1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
|
// SPDX-License-Identifier: ISC
/* Copyright (C) 2022 MediaTek Inc.
*
* Author: Lorenzo Bianconi <lorenzo@kernel.org>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
#include "mt7921.h"
#include "mcu.h"
#include "../mt76_connac2_mac.h"
static const struct usb_device_id mt7921u_device_table[] = {
{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7961, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
/* Comfast CF-952AX */
{ USB_DEVICE_AND_INTERFACE_INFO(0x3574, 0x6211, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
/* Netgear, Inc. [A8000,AXE3000] */
{ USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9060, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
{ },
};
static int
mt7921u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
int cmd, int *seq)
{
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
u32 pad, ep;
int ret;
ret = mt76_connac2_mcu_fill_message(mdev, skb, cmd, seq);
if (ret)
return ret;
mdev->mcu.timeout = 3 * HZ;
if (cmd != MCU_CMD(FW_SCATTER))
ep = MT_EP_OUT_INBAND_CMD;
else
ep = MT_EP_OUT_AC_BE;
mt792x_skb_add_usb_sdio_hdr(dev, skb, 0);
pad = round_up(skb->len, 4) + 4 - skb->len;
__skb_put_zero(skb, pad);
ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL,
1000, ep);
dev_kfree_skb(skb);
return ret;
}
static int mt7921u_mcu_init(struct mt792x_dev *dev)
{
static const struct mt76_mcu_ops mcu_ops = {
.headroom = MT_SDIO_HDR_SIZE +
sizeof(struct mt76_connac2_mcu_txd),
.tailroom = MT_USB_TAIL_SIZE,
.mcu_skb_send_msg = mt7921u_mcu_send_message,
.mcu_parse_response = mt7921_mcu_parse_response,
};
int ret;
dev->mt76.mcu_ops = &mcu_ops;
mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
ret = mt7921_run_firmware(dev);
if (ret)
return ret;
set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
return 0;
}
static int mt7921u_mac_reset(struct mt792x_dev *dev)
{
int err;
mt76_txq_schedule_all(&dev->mphy);
mt76_worker_disable(&dev->mt76.tx_worker);
set_bit(MT76_RESET, &dev->mphy.state);
set_bit(MT76_MCU_RESET, &dev->mphy.state);
wake_up(&dev->mt76.mcu.wait);
skb_queue_purge(&dev->mt76.mcu.res_q);
mt76u_stop_rx(&dev->mt76);
mt76u_stop_tx(&dev->mt76);
mt792xu_wfsys_reset(dev);
clear_bit(MT76_MCU_RESET, &dev->mphy.state);
err = mt76u_resume_rx(&dev->mt76);
if (err)
goto out;
err = mt792xu_mcu_power_on(dev);
if (err)
goto out;
err = mt792xu_dma_init(dev, false);
if (err)
goto out;
mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
err = mt7921_run_firmware(dev);
if (err)
goto out;
mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
err = mt7921_mcu_set_eeprom(dev);
if (err)
goto out;
err = mt7921_mac_init(dev);
if (err)
goto out;
err = __mt7921_start(&dev->phy);
out:
clear_bit(MT76_RESET, &dev->mphy.state);
mt76_worker_enable(&dev->mt76.tx_worker);
return err;
}
static int mt7921u_probe(struct usb_interface *usb_intf,
const struct usb_device_id *id)
{
static const struct mt76_driver_ops drv_ops = {
.txwi_size = MT_SDIO_TXD_SIZE,
.drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ |
MT_DRV_AMSDU_OFFLOAD,
.survey_flags = SURVEY_INFO_TIME_TX |
SURVEY_INFO_TIME_RX |
SURVEY_INFO_TIME_BSS_RX,
.tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb,
.tx_complete_skb = mt7921_usb_sdio_tx_complete_skb,
.tx_status_data = mt7921_usb_sdio_tx_status_data,
.rx_skb = mt7921_queue_rx_skb,
.rx_check = mt7921_rx_check,
.sta_add = mt7921_mac_sta_add,
.sta_event = mt7921_mac_sta_event,
.sta_remove = mt7921_mac_sta_remove,
.update_survey = mt792x_update_channel,
.set_channel = mt7921_set_channel,
};
static const struct mt792x_hif_ops hif_ops = {
.mcu_init = mt7921u_mcu_init,
.init_reset = mt792xu_init_reset,
.reset = mt7921u_mac_reset,
};
static struct mt76_bus_ops bus_ops = {
.rr = mt792xu_rr,
.wr = mt792xu_wr,
.rmw = mt792xu_rmw,
.read_copy = mt76u_read_copy,
.write_copy = mt792xu_copy,
.type = MT76_BUS_USB,
};
struct usb_device *udev = interface_to_usbdev(usb_intf);
struct ieee80211_ops *ops;
struct ieee80211_hw *hw;
struct mt792x_dev *dev;
struct mt76_dev *mdev;
u8 features;
int ret;
ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7921_ops,
(void *)id->driver_info, &features);
if (!ops)
return -ENOMEM;
ops->stop = mt792xu_stop;
mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
if (!mdev)
return -ENOMEM;
dev = container_of(mdev, struct mt792x_dev, mt76);
dev->fw_features = features;
dev->hif_ops = &hif_ops;
udev = usb_get_dev(udev);
usb_reset_device(udev);
usb_set_intfdata(usb_intf, dev);
ret = __mt76u_init(mdev, usb_intf, &bus_ops);
if (ret < 0)
goto error;
mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
(mt76_rr(dev, MT_HW_REV) & 0xff);
dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) {
ret = mt792xu_wfsys_reset(dev);
if (ret)
goto error;
}
ret = mt792xu_mcu_power_on(dev);
if (ret)
goto error;
ret = mt76u_alloc_mcu_queue(&dev->mt76);
if (ret)
goto error;
ret = mt76u_alloc_queues(&dev->mt76);
if (ret)
goto error;
ret = mt792xu_dma_init(dev, false);
if (ret)
goto error;
hw = mt76_hw(dev);
/* check hw sg support in order to enable AMSDU */
hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1;
ret = mt7921_register_device(dev);
if (ret)
goto error;
return 0;
error:
mt76u_queues_deinit(&dev->mt76);
usb_set_intfdata(usb_intf, NULL);
usb_put_dev(interface_to_usbdev(usb_intf));
mt76_free_device(&dev->mt76);
return ret;
}
#ifdef CONFIG_PM
static int mt7921u_suspend(struct usb_interface *intf, pm_message_t state)
{
struct mt792x_dev *dev = usb_get_intfdata(intf);
struct mt76_connac_pm *pm = &dev->pm;
int err;
pm->suspended = true;
flush_work(&dev->reset_work);
err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
if (err)
goto failed;
mt76u_stop_rx(&dev->mt76);
mt76u_stop_tx(&dev->mt76);
return 0;
failed:
pm->suspended = false;
if (err < 0)
mt792x_reset(&dev->mt76);
return err;
}
static int mt7921u_resume(struct usb_interface *intf)
{
struct mt792x_dev *dev = usb_get_intfdata(intf);
struct mt76_connac_pm *pm = &dev->pm;
bool reinit = true;
int err, i;
for (i = 0; i < 10; i++) {
u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT);
if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) {
reinit = false;
break;
}
if (val & MT_WF_SW_SER_DONE_SUSPEND) {
mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0);
break;
}
msleep(20);
}
if (reinit || mt792x_dma_need_reinit(dev)) {
err = mt792xu_dma_init(dev, true);
if (err)
goto failed;
}
err = mt76u_resume_rx(&dev->mt76);
if (err < 0)
goto failed;
err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false);
failed:
pm->suspended = false;
if (err < 0)
mt792x_reset(&dev->mt76);
return err;
}
#endif /* CONFIG_PM */
MODULE_DEVICE_TABLE(usb, mt7921u_device_table);
MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
MODULE_FIRMWARE(MT7921_ROM_PATCH);
static struct usb_driver mt7921u_driver = {
.name = KBUILD_MODNAME,
.id_table = mt7921u_device_table,
.probe = mt7921u_probe,
.disconnect = mt792xu_disconnect,
#ifdef CONFIG_PM
.suspend = mt7921u_suspend,
.resume = mt7921u_resume,
.reset_resume = mt7921u_resume,
#endif /* CONFIG_PM */
.soft_unbind = 1,
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(mt7921u_driver);
MODULE_DESCRIPTION("MediaTek MT7921U (USB) wireless driver");
MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
MODULE_LICENSE("Dual BSD/GPL");
|
