1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/module.h>
8 #include <linux/pci.h>
9
10 #include "mt76x0.h"
11 #include "mcu.h"
12
mt76x0e_start(struct ieee80211_hw * hw)13 static int mt76x0e_start(struct ieee80211_hw *hw)
14 {
15 struct mt76x02_dev *dev = hw->priv;
16
17 mt76x02_mac_start(dev);
18 mt76x0_phy_calibrate(dev, true);
19 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mphy.mac_work,
20 MT_MAC_WORK_INTERVAL);
21 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
22 MT_CALIBRATE_INTERVAL);
23 set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
24
25 return 0;
26 }
27
mt76x0e_stop_hw(struct mt76x02_dev * dev)28 static void mt76x0e_stop_hw(struct mt76x02_dev *dev)
29 {
30 cancel_delayed_work_sync(&dev->cal_work);
31 cancel_delayed_work_sync(&dev->mphy.mac_work);
32 clear_bit(MT76_RESTART, &dev->mphy.state);
33
34 if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_BUSY,
35 0, 1000))
36 dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
37 mt76_clear(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_EN);
38
39 mt76x0_mac_stop(dev);
40
41 if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_RX_DMA_BUSY,
42 0, 1000))
43 dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
44 mt76_clear(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_RX_DMA_EN);
45 }
46
mt76x0e_stop(struct ieee80211_hw * hw)47 static void mt76x0e_stop(struct ieee80211_hw *hw)
48 {
49 struct mt76x02_dev *dev = hw->priv;
50
51 clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
52 mt76x0e_stop_hw(dev);
53 }
54
55 static void
mt76x0e_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)56 mt76x0e_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
57 u32 queues, bool drop)
58 {
59 }
60
61 static const struct ieee80211_ops mt76x0e_ops = {
62 .tx = mt76x02_tx,
63 .start = mt76x0e_start,
64 .stop = mt76x0e_stop,
65 .add_interface = mt76x02_add_interface,
66 .remove_interface = mt76x02_remove_interface,
67 .config = mt76x0_config,
68 .configure_filter = mt76x02_configure_filter,
69 .bss_info_changed = mt76x02_bss_info_changed,
70 .sta_state = mt76_sta_state,
71 .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
72 .set_key = mt76x02_set_key,
73 .conf_tx = mt76x02_conf_tx,
74 .sw_scan_start = mt76_sw_scan,
75 .sw_scan_complete = mt76x02_sw_scan_complete,
76 .ampdu_action = mt76x02_ampdu_action,
77 .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
78 .wake_tx_queue = mt76_wake_tx_queue,
79 .get_survey = mt76_get_survey,
80 .get_txpower = mt76_get_txpower,
81 .flush = mt76x0e_flush,
82 .set_tim = mt76_set_tim,
83 .release_buffered_frames = mt76_release_buffered_frames,
84 .set_coverage_class = mt76x02_set_coverage_class,
85 .set_rts_threshold = mt76x02_set_rts_threshold,
86 .get_antenna = mt76_get_antenna,
87 .reconfig_complete = mt76x02_reconfig_complete,
88 .set_sar_specs = mt76x0_set_sar_specs,
89 };
90
mt76x0e_init_hardware(struct mt76x02_dev * dev,bool resume)91 static int mt76x0e_init_hardware(struct mt76x02_dev *dev, bool resume)
92 {
93 int err;
94
95 mt76x0_chip_onoff(dev, true, false);
96 if (!mt76x02_wait_for_mac(&dev->mt76))
97 return -ETIMEDOUT;
98
99 mt76x02_dma_disable(dev);
100 err = mt76x0e_mcu_init(dev);
101 if (err < 0)
102 return err;
103
104 if (!resume) {
105 err = mt76x02_dma_init(dev);
106 if (err < 0)
107 return err;
108 }
109
110 err = mt76x0_init_hardware(dev);
111 if (err < 0)
112 return err;
113
114 mt76x02e_init_beacon_config(dev);
115
116 if (mt76_chip(&dev->mt76) == 0x7610) {
117 u16 val;
118
119 mt76_clear(dev, MT_COEXCFG0, BIT(0));
120
121 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
122 if (!(val & MT_EE_NIC_CONF_0_PA_IO_CURRENT))
123 mt76_set(dev, MT_XO_CTRL7, 0xc03);
124 }
125
126 mt76_clear(dev, 0x110, BIT(9));
127 mt76_set(dev, MT_MAX_LEN_CFG, BIT(13));
128
129 return 0;
130 }
131
mt76x0e_register_device(struct mt76x02_dev * dev)132 static int mt76x0e_register_device(struct mt76x02_dev *dev)
133 {
134 int err;
135
136 err = mt76x0e_init_hardware(dev, false);
137 if (err < 0)
138 return err;
139
140 err = mt76x0_register_device(dev);
141 if (err < 0)
142 return err;
143
144 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
145
146 return 0;
147 }
148
149 static int
mt76x0e_probe(struct pci_dev * pdev,const struct pci_device_id * id)150 mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
151 {
152 static const struct mt76_driver_ops drv_ops = {
153 .txwi_size = sizeof(struct mt76x02_txwi),
154 .drv_flags = MT_DRV_TX_ALIGNED4_SKBS |
155 MT_DRV_SW_RX_AIRTIME |
156 MT_DRV_IGNORE_TXS_FAILED,
157 .survey_flags = SURVEY_INFO_TIME_TX,
158 .update_survey = mt76x02_update_channel,
159 .tx_prepare_skb = mt76x02_tx_prepare_skb,
160 .tx_complete_skb = mt76x02_tx_complete_skb,
161 .rx_skb = mt76x02_queue_rx_skb,
162 .rx_poll_complete = mt76x02_rx_poll_complete,
163 .sta_ps = mt76x02_sta_ps,
164 .sta_add = mt76x02_sta_add,
165 .sta_remove = mt76x02_sta_remove,
166 };
167 struct mt76x02_dev *dev;
168 struct mt76_dev *mdev;
169 int ret;
170
171 ret = pcim_enable_device(pdev);
172 if (ret)
173 return ret;
174
175 ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
176 if (ret)
177 return ret;
178
179 pci_set_master(pdev);
180
181 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
182 if (ret)
183 return ret;
184
185 mt76_pci_disable_aspm(pdev);
186
187 mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x0e_ops,
188 &drv_ops);
189 if (!mdev)
190 return -ENOMEM;
191
192 dev = container_of(mdev, struct mt76x02_dev, mt76);
193 mutex_init(&dev->phy_mutex);
194
195 mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
196
197 mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
198 dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
199
200 mt76_wr(dev, MT_INT_MASK_CSR, 0);
201
202 ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
203 IRQF_SHARED, KBUILD_MODNAME, dev);
204 if (ret)
205 goto error;
206
207 ret = mt76x0e_register_device(dev);
208 if (ret < 0)
209 goto error;
210
211 return 0;
212
213 error:
214 mt76_free_device(&dev->mt76);
215
216 return ret;
217 }
218
mt76x0e_cleanup(struct mt76x02_dev * dev)219 static void mt76x0e_cleanup(struct mt76x02_dev *dev)
220 {
221 clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
222 tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
223 mt76x0_chip_onoff(dev, false, false);
224 mt76x0e_stop_hw(dev);
225 mt76_dma_cleanup(&dev->mt76);
226 mt76x02_mcu_cleanup(dev);
227 }
228
229 static void
mt76x0e_remove(struct pci_dev * pdev)230 mt76x0e_remove(struct pci_dev *pdev)
231 {
232 struct mt76_dev *mdev = pci_get_drvdata(pdev);
233 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
234
235 mt76_unregister_device(mdev);
236 mt76x0e_cleanup(dev);
237 mt76_free_device(mdev);
238 }
239
240 #ifdef CONFIG_PM
mt76x0e_suspend(struct pci_dev * pdev,pm_message_t state)241 static int mt76x0e_suspend(struct pci_dev *pdev, pm_message_t state)
242 {
243 struct mt76_dev *mdev = pci_get_drvdata(pdev);
244 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
245 int i;
246
247 mt76_worker_disable(&mdev->tx_worker);
248 for (i = 0; i < ARRAY_SIZE(mdev->phy.q_tx); i++)
249 mt76_queue_tx_cleanup(dev, mdev->phy.q_tx[i], true);
250 for (i = 0; i < ARRAY_SIZE(mdev->q_mcu); i++)
251 mt76_queue_tx_cleanup(dev, mdev->q_mcu[i], true);
252 napi_disable(&mdev->tx_napi);
253
254 mt76_for_each_q_rx(mdev, i)
255 napi_disable(&mdev->napi[i]);
256
257 mt76x02_dma_disable(dev);
258 mt76x02_mcu_cleanup(dev);
259 mt76x0_chip_onoff(dev, false, false);
260
261 pci_enable_wake(pdev, pci_choose_state(pdev, state), true);
262 pci_save_state(pdev);
263
264 return pci_set_power_state(pdev, pci_choose_state(pdev, state));
265 }
266
mt76x0e_resume(struct pci_dev * pdev)267 static int mt76x0e_resume(struct pci_dev *pdev)
268 {
269 struct mt76_dev *mdev = pci_get_drvdata(pdev);
270 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
271 int err, i;
272
273 err = pci_set_power_state(pdev, PCI_D0);
274 if (err)
275 return err;
276
277 pci_restore_state(pdev);
278
279 mt76_worker_enable(&mdev->tx_worker);
280
281 local_bh_disable();
282 mt76_for_each_q_rx(mdev, i) {
283 mt76_queue_rx_reset(dev, i);
284 napi_enable(&mdev->napi[i]);
285 napi_schedule(&mdev->napi[i]);
286 }
287
288 napi_enable(&mdev->tx_napi);
289 napi_schedule(&mdev->tx_napi);
290 local_bh_enable();
291
292 return mt76x0e_init_hardware(dev, true);
293 }
294 #endif /* CONFIG_PM */
295
296 static const struct pci_device_id mt76x0e_device_table[] = {
297 { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7610) },
298 { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7630) },
299 { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7650) },
300 { },
301 };
302
303 MODULE_DEVICE_TABLE(pci, mt76x0e_device_table);
304 MODULE_FIRMWARE(MT7610E_FIRMWARE);
305 MODULE_FIRMWARE(MT7650E_FIRMWARE);
306 MODULE_LICENSE("Dual BSD/GPL");
307
308 static struct pci_driver mt76x0e_driver = {
309 .name = KBUILD_MODNAME,
310 .id_table = mt76x0e_device_table,
311 .probe = mt76x0e_probe,
312 .remove = mt76x0e_remove,
313 #ifdef CONFIG_PM
314 .suspend = mt76x0e_suspend,
315 .resume = mt76x0e_resume,
316 #endif /* CONFIG_PM */
317 };
318
319 module_pci_driver(mt76x0e_driver);
320