mt76/mt76x0/usb.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
0004  */
0005
0006 #include <linux/kernel.h>
0007 #include <linux/module.h>
0008 #include <linux/usb.h>
0009
0010 #include "mt76x0.h"
0011 #include "mcu.h"
0012 #include "../mt76x02_usb.h"
0013
0014 static struct usb_device_id mt76x0_device_table[] = {
0015     { USB_DEVICE(0x148F, 0x7610) }, /* MT7610U */
0016     { USB_DEVICE(0x13B1, 0x003E) }, /* Linksys AE6000 */
0017     { USB_DEVICE(0x0E8D, 0x7610) }, /* Sabrent NTWLAC */
0018     { USB_DEVICE(0x7392, 0xa711) }, /* Edimax 7711mac */
0019     { USB_DEVICE(0x7392, 0xb711) }, /* Edimax / Elecom  */
0020     { USB_DEVICE(0x148f, 0x761a) }, /* TP-Link TL-WDN5200 */
0021     { USB_DEVICE(0x148f, 0x760a) }, /* TP-Link unknown */
0022     { USB_DEVICE(0x0b05, 0x17d1) }, /* Asus USB-AC51 */
0023     { USB_DEVICE(0x0b05, 0x17db) }, /* Asus USB-AC50 */
0024     { USB_DEVICE(0x0df6, 0x0075) }, /* Sitecom WLA-3100 */
0025     { USB_DEVICE(0x2019, 0xab31) }, /* Planex GW-450D */
0026     { USB_DEVICE(0x2001, 0x3d02) }, /* D-LINK DWA-171 rev B1 */
0027     { USB_DEVICE(0x0586, 0x3425) }, /* Zyxel NWD6505 */
0028     { USB_DEVICE(0x07b8, 0x7610) }, /* AboCom AU7212 */
0029     { USB_DEVICE(0x04bb, 0x0951) }, /* I-O DATA WN-AC433UK */
0030     { USB_DEVICE(0x057c, 0x8502) }, /* AVM FRITZ!WLAN USB Stick AC 430 */
0031     { USB_DEVICE(0x293c, 0x5702) }, /* Comcast Xfinity KXW02AAA  */
0032     { USB_DEVICE(0x20f4, 0x806b) }, /* TRENDnet TEW-806UBH  */
0033     { USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */
0034     { USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac  Stick */
0035     { USB_DEVICE(0x2357, 0x0123) }, /* TP-LINK T2UHP_US_v1 */
0036     { USB_DEVICE(0x2357, 0x010b) }, /* TP-LINK T2UHP_UN_v1 */
0037     /* TP-LINK Archer T1U */
0038     { USB_DEVICE(0x2357, 0x0105), .driver_info = 1, },
0039     /* MT7630U */
0040     { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)},
0041     /* MT7650U */
0042     { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)},
0043     { 0, }
0044 };
0045
0046 static void mt76x0_init_usb_dma(struct mt76x02_dev *dev)
0047 {
0048     u32 val;
0049
0050     val = mt76_rr(dev, MT_USB_DMA_CFG);
0051
0052     val |= MT_USB_DMA_CFG_RX_BULK_EN |
0053            MT_USB_DMA_CFG_TX_BULK_EN;
0054
0055     /* disable AGGR_BULK_RX in order to receive one
0056      * frame in each rx urb and avoid copies
0057      */
0058     val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN;
0059     mt76_wr(dev, MT_USB_DMA_CFG, val);
0060
0061     val = mt76_rr(dev, MT_COM_REG0);
0062     if (val & 1)
0063         dev_dbg(dev->mt76.dev, "MCU not ready\n");
0064
0065     val = mt76_rr(dev, MT_USB_DMA_CFG);
0066
0067     val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD;
0068     mt76_wr(dev, MT_USB_DMA_CFG, val);
0069     val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD;
0070     mt76_wr(dev, MT_USB_DMA_CFG, val);
0071 }
0072
0073 static void mt76x0u_cleanup(struct mt76x02_dev *dev)
0074 {
0075     clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
0076     mt76x0_chip_onoff(dev, false, false);
0077     mt76u_queues_deinit(&dev->mt76);
0078 }
0079
0080 static void mt76x0u_stop(struct ieee80211_hw *hw)
0081 {
0082     struct mt76x02_dev *dev = hw->priv;
0083
0084     clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
0085     cancel_delayed_work_sync(&dev->cal_work);
0086     cancel_delayed_work_sync(&dev->mphy.mac_work);
0087     mt76u_stop_tx(&dev->mt76);
0088     mt76x02u_exit_beacon_config(dev);
0089
0090     if (test_bit(MT76_REMOVED, &dev->mphy.state))
0091         return;
0092
0093     if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000))
0094         dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
0095
0096     mt76x0_mac_stop(dev);
0097
0098     if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000))
0099         dev_warn(dev->mt76.dev, "RX DMA did not stop\n");
0100 }
0101
0102 static int mt76x0u_start(struct ieee80211_hw *hw)
0103 {
0104     struct mt76x02_dev *dev = hw->priv;
0105     int ret;
0106
0107     ret = mt76x02u_mac_start(dev);
0108     if (ret)
0109         return ret;
0110
0111     mt76x0_phy_calibrate(dev, true);
0112     ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mphy.mac_work,
0113                      MT_MAC_WORK_INTERVAL);
0114     ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
0115                      MT_CALIBRATE_INTERVAL);
0116     set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
0117     return 0;
0118 }
0119
0120 static const struct ieee80211_ops mt76x0u_ops = {
0121     .tx = mt76x02_tx,
0122     .start = mt76x0u_start,
0123     .stop = mt76x0u_stop,
0124     .add_interface = mt76x02_add_interface,
0125     .remove_interface = mt76x02_remove_interface,
0126     .config = mt76x0_config,
0127     .configure_filter = mt76x02_configure_filter,
0128     .bss_info_changed = mt76x02_bss_info_changed,
0129     .sta_state = mt76_sta_state,
0130     .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
0131     .set_key = mt76x02_set_key,
0132     .conf_tx = mt76x02_conf_tx,
0133     .sw_scan_start = mt76_sw_scan,
0134     .sw_scan_complete = mt76x02_sw_scan_complete,
0135     .ampdu_action = mt76x02_ampdu_action,
0136     .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
0137     .set_rts_threshold = mt76x02_set_rts_threshold,
0138     .wake_tx_queue = mt76_wake_tx_queue,
0139     .get_txpower = mt76_get_txpower,
0140     .get_survey = mt76_get_survey,
0141     .set_tim = mt76_set_tim,
0142     .release_buffered_frames = mt76_release_buffered_frames,
0143     .get_antenna = mt76_get_antenna,
0144     .set_sar_specs = mt76x0_set_sar_specs,
0145 };
0146
0147 static int mt76x0u_init_hardware(struct mt76x02_dev *dev, bool reset)
0148 {
0149     int err;
0150
0151     mt76x0_chip_onoff(dev, true, reset);
0152
0153     if (!mt76x02_wait_for_mac(&dev->mt76))
0154         return -ETIMEDOUT;
0155
0156     err = mt76x0u_mcu_init(dev);
0157     if (err < 0)
0158         return err;
0159
0160     mt76x0_init_usb_dma(dev);
0161     err = mt76x0_init_hardware(dev);
0162     if (err < 0)
0163         return err;
0164
0165     mt76x02u_init_beacon_config(dev);
0166
0167     mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
0168     mt76_wr(dev, MT_TXOP_CTRL_CFG,
0169         FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
0170         FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
0171
0172     return 0;
0173 }
0174
0175 static int mt76x0u_register_device(struct mt76x02_dev *dev)
0176 {
0177     struct ieee80211_hw *hw = dev->mt76.hw;
0178     struct mt76_usb *usb = &dev->mt76.usb;
0179     int err;
0180
0181     usb->mcu.data = devm_kmalloc(dev->mt76.dev, MCU_RESP_URB_SIZE,
0182                      GFP_KERNEL);
0183     if (!usb->mcu.data)
0184         return -ENOMEM;
0185
0186     err = mt76u_alloc_queues(&dev->mt76);
0187     if (err < 0)
0188         goto out_err;
0189
0190     err = mt76x0u_init_hardware(dev, true);
0191     if (err < 0)
0192         goto out_err;
0193
0194     /* check hw sg support in order to enable AMSDU */
0195     hw->max_tx_fragments = dev->mt76.usb.sg_en ? MT_TX_SG_MAX_SIZE : 1;
0196     err = mt76x0_register_device(dev);
0197     if (err < 0)
0198         goto out_err;
0199
0200     set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
0201
0202     return 0;
0203
0204 out_err:
0205     mt76x0u_cleanup(dev);
0206     return err;
0207 }
0208
0209 static int mt76x0u_probe(struct usb_interface *usb_intf,
0210              const struct usb_device_id *id)
0211 {
0212     static const struct mt76_driver_ops drv_ops = {
0213         .drv_flags = MT_DRV_SW_RX_AIRTIME,
0214         .survey_flags = SURVEY_INFO_TIME_TX,
0215         .update_survey = mt76x02_update_channel,
0216         .tx_prepare_skb = mt76x02u_tx_prepare_skb,
0217         .tx_complete_skb = mt76x02u_tx_complete_skb,
0218         .tx_status_data = mt76x02_tx_status_data,
0219         .rx_skb = mt76x02_queue_rx_skb,
0220         .sta_ps = mt76x02_sta_ps,
0221         .sta_add = mt76x02_sta_add,
0222         .sta_remove = mt76x02_sta_remove,
0223     };
0224     struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
0225     struct mt76x02_dev *dev;
0226     struct mt76_dev *mdev;
0227     u32 mac_rev;
0228     int ret;
0229
0230     mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), &mt76x0u_ops,
0231                  &drv_ops);
0232     if (!mdev)
0233         return -ENOMEM;
0234
0235     dev = container_of(mdev, struct mt76x02_dev, mt76);
0236     mutex_init(&dev->phy_mutex);
0237
0238     /* Quirk for Archer T1U */
0239     if (id->driver_info)
0240         dev->no_2ghz = true;
0241
0242     usb_dev = usb_get_dev(usb_dev);
0243     usb_reset_device(usb_dev);
0244
0245     usb_set_intfdata(usb_intf, dev);
0246
0247     mt76x02u_init_mcu(mdev);
0248     ret = mt76u_init(mdev, usb_intf);
0249     if (ret)
0250         goto err;
0251
0252     /* Disable the HW, otherwise MCU fail to initialize on hot reboot */
0253     mt76x0_chip_onoff(dev, false, false);
0254
0255     if (!mt76x02_wait_for_mac(mdev)) {
0256         ret = -ETIMEDOUT;
0257         goto err;
0258     }
0259
0260     mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
0261     mac_rev = mt76_rr(dev, MT_MAC_CSR0);
0262     dev_info(mdev->dev, "ASIC revision: %08x MAC revision: %08x\n",
0263          mdev->rev, mac_rev);
0264     if (!is_mt76x0(dev)) {
0265         ret = -ENODEV;
0266         goto err;
0267     }
0268
0269     /* Note: vendor driver skips this check for MT76X0U */
0270     if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
0271         dev_warn(mdev->dev, "Warning: eFUSE not present\n");
0272
0273     ret = mt76x0u_register_device(dev);
0274     if (ret < 0)
0275         goto err;
0276
0277     return 0;
0278
0279 err:
0280     usb_set_intfdata(usb_intf, NULL);
0281     usb_put_dev(interface_to_usbdev(usb_intf));
0282     mt76u_queues_deinit(&dev->mt76);
0283     mt76_free_device(&dev->mt76);
0284
0285     return ret;
0286 }
0287
0288 static void mt76x0_disconnect(struct usb_interface *usb_intf)
0289 {
0290     struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
0291     bool initialized = test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
0292
0293     if (!initialized)
0294         return;
0295
0296     ieee80211_unregister_hw(dev->mt76.hw);
0297     mt76x0u_cleanup(dev);
0298
0299     usb_set_intfdata(usb_intf, NULL);
0300     usb_put_dev(interface_to_usbdev(usb_intf));
0301
0302     mt76_free_device(&dev->mt76);
0303 }
0304
0305 static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
0306                      pm_message_t state)
0307 {
0308     struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
0309
0310     mt76u_stop_rx(&dev->mt76);
0311     clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
0312     mt76x0_chip_onoff(dev, false, false);
0313
0314     return 0;
0315 }
0316
0317 static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
0318 {
0319     struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
0320     int ret;
0321
0322     ret = mt76u_resume_rx(&dev->mt76);
0323     if (ret < 0)
0324         goto err;
0325
0326     ret = mt76x0u_init_hardware(dev, false);
0327     if (ret)
0328         goto err;
0329
0330     return 0;
0331 err:
0332     mt76x0u_cleanup(dev);
0333     return ret;
0334 }
0335
0336 MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
0337 MODULE_FIRMWARE(MT7610E_FIRMWARE);
0338 MODULE_FIRMWARE(MT7610U_FIRMWARE);
0339 MODULE_LICENSE("GPL");
0340
0341 static struct usb_driver mt76x0_driver = {
0342     .name       = KBUILD_MODNAME,
0343     .id_table   = mt76x0_device_table,
0344     .probe      = mt76x0u_probe,
0345     .disconnect = mt76x0_disconnect,
0346     .suspend    = mt76x0_suspend,
0347     .resume     = mt76x0_resume,
0348     .reset_resume   = mt76x0_resume,
0349     .soft_unbind    = 1,
0350     .disable_hub_initiated_lpm = 1,
0351 };
0352 module_usb_driver(mt76x0_driver);