1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/module.h>
8 #include <linux/usb.h>
9
10 #include "mt76x0.h"
11 #include "mcu.h"
12 #include "../mt76x02_usb.h"
13
14 static struct usb_device_id mt76x0_device_table[] = {
15 { USB_DEVICE(0x148F, 0x7610) }, /* MT7610U */
16 { USB_DEVICE(0x13B1, 0x003E) }, /* Linksys AE6000 */
17 { USB_DEVICE(0x0E8D, 0x7610) }, /* Sabrent NTWLAC */
18 { USB_DEVICE(0x7392, 0xa711) }, /* Edimax 7711mac */
19 { USB_DEVICE(0x7392, 0xb711) }, /* Edimax / Elecom */
20 { USB_DEVICE(0x148f, 0x761a) }, /* TP-Link TL-WDN5200 */
21 { USB_DEVICE(0x148f, 0x760a) }, /* TP-Link unknown */
22 { USB_DEVICE(0x0b05, 0x17d1) }, /* Asus USB-AC51 */
23 { USB_DEVICE(0x0b05, 0x17db) }, /* Asus USB-AC50 */
24 { USB_DEVICE(0x0df6, 0x0075) }, /* Sitecom WLA-3100 */
25 { USB_DEVICE(0x2019, 0xab31) }, /* Planex GW-450D */
26 { USB_DEVICE(0x2001, 0x3d02) }, /* D-LINK DWA-171 rev B1 */
27 { USB_DEVICE(0x0586, 0x3425) }, /* Zyxel NWD6505 */
28 { USB_DEVICE(0x07b8, 0x7610) }, /* AboCom AU7212 */
29 { USB_DEVICE(0x04bb, 0x0951) }, /* I-O DATA WN-AC433UK */
30 { USB_DEVICE(0x057c, 0x8502) }, /* AVM FRITZ!WLAN USB Stick AC 430 */
31 { USB_DEVICE(0x293c, 0x5702) }, /* Comcast Xfinity KXW02AAA */
32 { USB_DEVICE(0x20f4, 0x806b) }, /* TRENDnet TEW-806UBH */
33 { USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */
34 { USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac Stick */
35 { USB_DEVICE(0x2357, 0x0123) }, /* TP-LINK T2UHP_US_v1 */
36 { USB_DEVICE(0x2357, 0x010b) }, /* TP-LINK T2UHP_UN_v1 */
37 /* TP-LINK Archer T1U */
38 { USB_DEVICE(0x2357, 0x0105), .driver_info = 1, },
39 /* MT7630U */
40 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)},
41 /* MT7650U */
42 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)},
43 { 0, }
44 };
45
mt76x0_init_usb_dma(struct mt76x02_dev * dev)46 static void mt76x0_init_usb_dma(struct mt76x02_dev *dev)
47 {
48 u32 val;
49
50 val = mt76_rr(dev, MT_USB_DMA_CFG);
51
52 val |= MT_USB_DMA_CFG_RX_BULK_EN |
53 MT_USB_DMA_CFG_TX_BULK_EN;
54
55 /* disable AGGR_BULK_RX in order to receive one
56 * frame in each rx urb and avoid copies
57 */
58 val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN;
59 mt76_wr(dev, MT_USB_DMA_CFG, val);
60
61 val = mt76_rr(dev, MT_COM_REG0);
62 if (val & 1)
63 dev_dbg(dev->mt76.dev, "MCU not ready\n");
64
65 val = mt76_rr(dev, MT_USB_DMA_CFG);
66
67 val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD;
68 mt76_wr(dev, MT_USB_DMA_CFG, val);
69 val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD;
70 mt76_wr(dev, MT_USB_DMA_CFG, val);
71 }
72
mt76x0u_cleanup(struct mt76x02_dev * dev)73 static void mt76x0u_cleanup(struct mt76x02_dev *dev)
74 {
75 clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
76 mt76x0_chip_onoff(dev, false, false);
77 mt76u_queues_deinit(&dev->mt76);
78 }
79
mt76x0u_stop(struct ieee80211_hw * hw,bool suspend)80 static void mt76x0u_stop(struct ieee80211_hw *hw, bool suspend)
81 {
82 struct mt76x02_dev *dev = hw->priv;
83
84 clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
85 cancel_delayed_work_sync(&dev->cal_work);
86 cancel_delayed_work_sync(&dev->mphy.mac_work);
87 mt76u_stop_tx(&dev->mt76);
88 mt76x02u_exit_beacon_config(dev);
89
90 if (test_bit(MT76_REMOVED, &dev->mphy.state))
91 return;
92
93 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000))
94 dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
95
96 mt76x0_mac_stop(dev);
97
98 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000))
99 dev_warn(dev->mt76.dev, "RX DMA did not stop\n");
100 }
101
mt76x0u_start(struct ieee80211_hw * hw)102 static int mt76x0u_start(struct ieee80211_hw *hw)
103 {
104 struct mt76x02_dev *dev = hw->priv;
105 int ret;
106
107 ret = mt76x02u_mac_start(dev);
108 if (ret)
109 return ret;
110
111 mt76x0_phy_calibrate(dev, true);
112 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mphy.mac_work,
113 MT_MAC_WORK_INTERVAL);
114 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
115 MT_CALIBRATE_INTERVAL);
116 set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
117 return 0;
118 }
119
120 static const struct ieee80211_ops mt76x0u_ops = {
121 .add_chanctx = ieee80211_emulate_add_chanctx,
122 .remove_chanctx = ieee80211_emulate_remove_chanctx,
123 .change_chanctx = ieee80211_emulate_change_chanctx,
124 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
125 .tx = mt76x02_tx,
126 .start = mt76x0u_start,
127 .stop = mt76x0u_stop,
128 .add_interface = mt76x02_add_interface,
129 .remove_interface = mt76x02_remove_interface,
130 .config = mt76x0_config,
131 .configure_filter = mt76x02_configure_filter,
132 .bss_info_changed = mt76x02_bss_info_changed,
133 .sta_state = mt76_sta_state,
134 .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
135 .set_key = mt76x02_set_key,
136 .conf_tx = mt76x02_conf_tx,
137 .sw_scan_start = mt76_sw_scan,
138 .sw_scan_complete = mt76x02_sw_scan_complete,
139 .ampdu_action = mt76x02_ampdu_action,
140 .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
141 .set_rts_threshold = mt76x02_set_rts_threshold,
142 .wake_tx_queue = mt76_wake_tx_queue,
143 .get_txpower = mt76_get_txpower,
144 .get_survey = mt76_get_survey,
145 .set_tim = mt76_set_tim,
146 .release_buffered_frames = mt76_release_buffered_frames,
147 .get_antenna = mt76_get_antenna,
148 .set_sar_specs = mt76x0_set_sar_specs,
149 };
150
mt76x0u_init_hardware(struct mt76x02_dev * dev,bool reset)151 static int mt76x0u_init_hardware(struct mt76x02_dev *dev, bool reset)
152 {
153 int err;
154
155 mt76x0_chip_onoff(dev, true, reset);
156
157 if (!mt76x02_wait_for_mac(&dev->mt76))
158 return -ETIMEDOUT;
159
160 err = mt76x0u_mcu_init(dev);
161 if (err < 0)
162 return err;
163
164 mt76x0_init_usb_dma(dev);
165 err = mt76x0_init_hardware(dev);
166 if (err < 0)
167 return err;
168
169 mt76x02u_init_beacon_config(dev);
170
171 mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
172 mt76_wr(dev, MT_TXOP_CTRL_CFG,
173 FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
174 FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
175
176 return 0;
177 }
178
mt76x0u_register_device(struct mt76x02_dev * dev)179 static int mt76x0u_register_device(struct mt76x02_dev *dev)
180 {
181 struct ieee80211_hw *hw = dev->mt76.hw;
182 struct mt76_usb *usb = &dev->mt76.usb;
183 int err;
184
185 usb->mcu.data = devm_kmalloc(dev->mt76.dev, MCU_RESP_URB_SIZE,
186 GFP_KERNEL);
187 if (!usb->mcu.data)
188 return -ENOMEM;
189
190 err = mt76u_alloc_queues(&dev->mt76);
191 if (err < 0)
192 goto out_err;
193
194 err = mt76x0u_init_hardware(dev, true);
195 if (err < 0)
196 goto out_err;
197
198 /* check hw sg support in order to enable AMSDU */
199 hw->max_tx_fragments = dev->mt76.usb.sg_en ? MT_TX_SG_MAX_SIZE : 1;
200 err = mt76x0_register_device(dev);
201 if (err < 0)
202 goto out_err;
203
204 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
205
206 return 0;
207
208 out_err:
209 mt76x0u_cleanup(dev);
210 return err;
211 }
212
mt76x0u_probe(struct usb_interface * usb_intf,const struct usb_device_id * id)213 static int mt76x0u_probe(struct usb_interface *usb_intf,
214 const struct usb_device_id *id)
215 {
216 static const struct mt76_driver_ops drv_ops = {
217 .drv_flags = MT_DRV_SW_RX_AIRTIME,
218 .survey_flags = SURVEY_INFO_TIME_TX,
219 .update_survey = mt76x02_update_channel,
220 .set_channel = mt76x0_set_channel,
221 .tx_prepare_skb = mt76x02u_tx_prepare_skb,
222 .tx_complete_skb = mt76x02u_tx_complete_skb,
223 .tx_status_data = mt76x02_tx_status_data,
224 .rx_skb = mt76x02_queue_rx_skb,
225 .sta_ps = mt76x02_sta_ps,
226 .sta_add = mt76x02_sta_add,
227 .sta_remove = mt76x02_sta_remove,
228 };
229 struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
230 struct mt76x02_dev *dev;
231 struct mt76_dev *mdev;
232 u32 mac_rev;
233 int ret;
234
235 mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), &mt76x0u_ops,
236 &drv_ops);
237 if (!mdev)
238 return -ENOMEM;
239
240 dev = container_of(mdev, struct mt76x02_dev, mt76);
241 mutex_init(&dev->phy_mutex);
242
243 /* Quirk for Archer T1U */
244 if (id->driver_info)
245 dev->no_2ghz = true;
246
247 usb_dev = usb_get_dev(usb_dev);
248 usb_reset_device(usb_dev);
249
250 usb_set_intfdata(usb_intf, dev);
251
252 mt76x02u_init_mcu(mdev);
253 ret = mt76u_init(mdev, usb_intf);
254 if (ret)
255 goto err;
256
257 /* Disable the HW, otherwise MCU fail to initialize on hot reboot */
258 mt76x0_chip_onoff(dev, false, false);
259
260 if (!mt76x02_wait_for_mac(mdev)) {
261 ret = -ETIMEDOUT;
262 goto err;
263 }
264
265 mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
266 mac_rev = mt76_rr(dev, MT_MAC_CSR0);
267 dev_info(mdev->dev, "ASIC revision: %08x MAC revision: %08x\n",
268 mdev->rev, mac_rev);
269 if (!is_mt76x0(dev)) {
270 ret = -ENODEV;
271 goto err;
272 }
273
274 /* Note: vendor driver skips this check for MT76X0U */
275 if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
276 dev_warn(mdev->dev, "Warning: eFUSE not present\n");
277
278 ret = mt76x0u_register_device(dev);
279 if (ret < 0)
280 goto err;
281
282 return 0;
283
284 err:
285 usb_set_intfdata(usb_intf, NULL);
286 usb_put_dev(interface_to_usbdev(usb_intf));
287 mt76u_queues_deinit(&dev->mt76);
288 mt76_free_device(&dev->mt76);
289
290 return ret;
291 }
292
mt76x0_disconnect(struct usb_interface * usb_intf)293 static void mt76x0_disconnect(struct usb_interface *usb_intf)
294 {
295 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
296 bool initialized = test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
297
298 if (!initialized)
299 return;
300
301 ieee80211_unregister_hw(dev->mt76.hw);
302 mt76x0u_cleanup(dev);
303
304 usb_set_intfdata(usb_intf, NULL);
305 usb_put_dev(interface_to_usbdev(usb_intf));
306
307 mt76_free_device(&dev->mt76);
308 }
309
mt76x0_suspend(struct usb_interface * usb_intf,pm_message_t state)310 static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
311 pm_message_t state)
312 {
313 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
314
315 mt76u_stop_rx(&dev->mt76);
316 clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
317 mt76x0_chip_onoff(dev, false, false);
318
319 return 0;
320 }
321
mt76x0_resume(struct usb_interface * usb_intf)322 static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
323 {
324 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
325 int ret;
326
327 ret = mt76u_resume_rx(&dev->mt76);
328 if (ret < 0)
329 goto err;
330
331 ret = mt76x0u_init_hardware(dev, false);
332 if (ret)
333 goto err;
334
335 return 0;
336 err:
337 mt76x0u_cleanup(dev);
338 return ret;
339 }
340
341 MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
342 MODULE_FIRMWARE(MT7610E_FIRMWARE);
343 MODULE_FIRMWARE(MT7610U_FIRMWARE);
344 MODULE_DESCRIPTION("MediaTek MT76x0U (USB) wireless driver");
345 MODULE_LICENSE("GPL");
346
347 static struct usb_driver mt76x0_driver = {
348 .name = KBUILD_MODNAME,
349 .id_table = mt76x0_device_table,
350 .probe = mt76x0u_probe,
351 .disconnect = mt76x0_disconnect,
352 .suspend = mt76x0_suspend,
353 .resume = mt76x0_resume,
354 .reset_resume = mt76x0_resume,
355 .soft_unbind = 1,
356 .disable_hub_initiated_lpm = 1,
357 };
358 module_usb_driver(mt76x0_driver);
359