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
14static 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 */
36	/* TP-LINK Archer T1U */
37	{ USB_DEVICE(0x2357, 0x0105), .driver_info = 1, },
38	/* MT7630U */
39	{ USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)},
40	/* MT7650U */
41	{ USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)},
42	{ 0, }
43};
44
45static void mt76x0_init_usb_dma(struct mt76x02_dev *dev)
46{
47	u32 val;
48
49	val = mt76_rr(dev, MT_USB_DMA_CFG);
50
51	val |= MT_USB_DMA_CFG_RX_BULK_EN |
52	       MT_USB_DMA_CFG_TX_BULK_EN;
53
54	/* disable AGGR_BULK_RX in order to receive one
55	 * frame in each rx urb and avoid copies
56	 */
57	val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN;
58	mt76_wr(dev, MT_USB_DMA_CFG, val);
59
60	val = mt76_rr(dev, MT_COM_REG0);
61	if (val & 1)
62		dev_dbg(dev->mt76.dev, "MCU not ready\n");
63
64	val = mt76_rr(dev, MT_USB_DMA_CFG);
65
66	val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD;
67	mt76_wr(dev, MT_USB_DMA_CFG, val);
68	val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD;
69	mt76_wr(dev, MT_USB_DMA_CFG, val);
70}
71
72static void mt76x0u_cleanup(struct mt76x02_dev *dev)
73{
74	clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
75	mt76x0_chip_onoff(dev, false, false);
76	mt76u_queues_deinit(&dev->mt76);
77}
78
79static void mt76x0u_stop(struct ieee80211_hw *hw)
80{
81	struct mt76x02_dev *dev = hw->priv;
82
83	clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
84	cancel_delayed_work_sync(&dev->cal_work);
85	cancel_delayed_work_sync(&dev->mt76.mac_work);
86	mt76u_stop_tx(&dev->mt76);
87	mt76x02u_exit_beacon_config(dev);
88
89	if (test_bit(MT76_REMOVED, &dev->mphy.state))
90		return;
91
92	if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000))
93		dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
94
95	mt76x0_mac_stop(dev);
96
97	if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000))
98		dev_warn(dev->mt76.dev, "RX DMA did not stop\n");
99}
100
101static int mt76x0u_start(struct ieee80211_hw *hw)
102{
103	struct mt76x02_dev *dev = hw->priv;
104	int ret;
105
106	ret = mt76x02u_mac_start(dev);
107	if (ret)
108		return ret;
109
110	mt76x0_phy_calibrate(dev, true);
111	ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mt76.mac_work,
112				     MT_MAC_WORK_INTERVAL);
113	ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
114				     MT_CALIBRATE_INTERVAL);
115	set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
116	return 0;
117}
118
119static const struct ieee80211_ops mt76x0u_ops = {
120	.tx = mt76x02_tx,
121	.start = mt76x0u_start,
122	.stop = mt76x0u_stop,
123	.add_interface = mt76x02_add_interface,
124	.remove_interface = mt76x02_remove_interface,
125	.config = mt76x0_config,
126	.configure_filter = mt76x02_configure_filter,
127	.bss_info_changed = mt76x02_bss_info_changed,
128	.sta_state = mt76_sta_state,
129	.sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
130	.set_key = mt76x02_set_key,
131	.conf_tx = mt76x02_conf_tx,
132	.sw_scan_start = mt76_sw_scan,
133	.sw_scan_complete = mt76x02_sw_scan_complete,
134	.ampdu_action = mt76x02_ampdu_action,
135	.sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
136	.set_rts_threshold = mt76x02_set_rts_threshold,
137	.wake_tx_queue = mt76_wake_tx_queue,
138	.get_txpower = mt76_get_txpower,
139	.get_survey = mt76_get_survey,
140	.set_tim = mt76_set_tim,
141	.release_buffered_frames = mt76_release_buffered_frames,
142	.get_antenna = mt76_get_antenna,
143};
144
145static int mt76x0u_init_hardware(struct mt76x02_dev *dev, bool reset)
146{
147	int err;
148
149	mt76x0_chip_onoff(dev, true, reset);
150
151	if (!mt76x02_wait_for_mac(&dev->mt76))
152		return -ETIMEDOUT;
153
154	err = mt76x0u_mcu_init(dev);
155	if (err < 0)
156		return err;
157
158	mt76x0_init_usb_dma(dev);
159	err = mt76x0_init_hardware(dev);
160	if (err < 0)
161		return err;
162
163	mt76x02u_init_beacon_config(dev);
164
165	mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
166	mt76_wr(dev, MT_TXOP_CTRL_CFG,
167		FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
168		FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
169
170	return 0;
171}
172
173static int mt76x0u_register_device(struct mt76x02_dev *dev)
174{
175	struct ieee80211_hw *hw = dev->mt76.hw;
176	struct mt76_usb *usb = &dev->mt76.usb;
177	int err;
178
179	usb->mcu.data = devm_kmalloc(dev->mt76.dev, MCU_RESP_URB_SIZE,
180				     GFP_KERNEL);
181	if (!usb->mcu.data)
182		return -ENOMEM;
183
184	err = mt76u_alloc_queues(&dev->mt76);
185	if (err < 0)
186		goto out_err;
187
188	err = mt76x0u_init_hardware(dev, true);
189	if (err < 0)
190		goto out_err;
191
192	/* check hw sg support in order to enable AMSDU */
193	hw->max_tx_fragments = dev->mt76.usb.sg_en ? MT_TX_SG_MAX_SIZE : 1;
194	err = mt76x0_register_device(dev);
195	if (err < 0)
196		goto out_err;
197
198	set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
199
200	return 0;
201
202out_err:
203	mt76x0u_cleanup(dev);
204	return err;
205}
206
207static int mt76x0u_probe(struct usb_interface *usb_intf,
208			 const struct usb_device_id *id)
209{
210	static const struct mt76_driver_ops drv_ops = {
211		.drv_flags = MT_DRV_SW_RX_AIRTIME,
212		.survey_flags = SURVEY_INFO_TIME_TX,
213		.update_survey = mt76x02_update_channel,
214		.tx_prepare_skb = mt76x02u_tx_prepare_skb,
215		.tx_complete_skb = mt76x02u_tx_complete_skb,
216		.tx_status_data = mt76x02_tx_status_data,
217		.rx_skb = mt76x02_queue_rx_skb,
218		.sta_ps = mt76x02_sta_ps,
219		.sta_add = mt76x02_sta_add,
220		.sta_remove = mt76x02_sta_remove,
221	};
222	struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
223	struct mt76x02_dev *dev;
224	struct mt76_dev *mdev;
225	u32 mac_rev;
226	int ret;
227
228	mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), &mt76x0u_ops,
229				 &drv_ops);
230	if (!mdev)
231		return -ENOMEM;
232
233	dev = container_of(mdev, struct mt76x02_dev, mt76);
234	mutex_init(&dev->phy_mutex);
235
236	/* Quirk for Archer T1U */
237	if (id->driver_info)
238		dev->no_2ghz = true;
239
240	usb_dev = usb_get_dev(usb_dev);
241	usb_reset_device(usb_dev);
242
243	usb_set_intfdata(usb_intf, dev);
244
245	mt76x02u_init_mcu(mdev);
246	ret = mt76u_init(mdev, usb_intf, false);
247	if (ret)
248		goto err;
249
250	/* Disable the HW, otherwise MCU fail to initialize on hot reboot */
251	mt76x0_chip_onoff(dev, false, false);
252
253	if (!mt76x02_wait_for_mac(mdev)) {
254		ret = -ETIMEDOUT;
255		goto err;
256	}
257
258	mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
259	mac_rev = mt76_rr(dev, MT_MAC_CSR0);
260	dev_info(mdev->dev, "ASIC revision: %08x MAC revision: %08x\n",
261		 mdev->rev, mac_rev);
262	if (!is_mt76x0(dev)) {
263		ret = -ENODEV;
264		goto err;
265	}
266
267	/* Note: vendor driver skips this check for MT76X0U */
268	if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
269		dev_warn(mdev->dev, "Warning: eFUSE not present\n");
270
271	ret = mt76x0u_register_device(dev);
272	if (ret < 0)
273		goto err;
274
275	return 0;
276
277err:
278	usb_set_intfdata(usb_intf, NULL);
279	usb_put_dev(interface_to_usbdev(usb_intf));
280	mt76_free_device(&dev->mt76);
281
282	return ret;
283}
284
285static void mt76x0_disconnect(struct usb_interface *usb_intf)
286{
287	struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
288	bool initialized = test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
289
290	if (!initialized)
291		return;
292
293	ieee80211_unregister_hw(dev->mt76.hw);
294	mt76x0u_cleanup(dev);
295
296	usb_set_intfdata(usb_intf, NULL);
297	usb_put_dev(interface_to_usbdev(usb_intf));
298
299	mt76_free_device(&dev->mt76);
300}
301
302static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
303					 pm_message_t state)
304{
305	struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
306
307	mt76u_stop_rx(&dev->mt76);
308	clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
309	mt76x0_chip_onoff(dev, false, false);
310
311	return 0;
312}
313
314static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
315{
316	struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
317	int ret;
318
319	ret = mt76u_resume_rx(&dev->mt76);
320	if (ret < 0)
321		goto err;
322
323	ret = mt76x0u_init_hardware(dev, false);
324	if (ret)
325		goto err;
326
327	return 0;
328err:
329	mt76x0u_cleanup(dev);
330	return ret;
331}
332
333MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
334MODULE_FIRMWARE(MT7610E_FIRMWARE);
335MODULE_FIRMWARE(MT7610U_FIRMWARE);
336MODULE_LICENSE("GPL");
337
338static struct usb_driver mt76x0_driver = {
339	.name		= KBUILD_MODNAME,
340	.id_table	= mt76x0_device_table,
341	.probe		= mt76x0u_probe,
342	.disconnect	= mt76x0_disconnect,
343	.suspend	= mt76x0_suspend,
344	.resume		= mt76x0_resume,
345	.reset_resume	= mt76x0_resume,
346	.soft_unbind	= 1,
347	.disable_hub_initiated_lpm = 1,
348};
349module_usb_driver(mt76x0_driver);
350