drivers/net/wireless/mediatek/mt76/mt76x0/usb.c

   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 */
  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
  45 static 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
  72 static 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
  79 static 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
 101 static 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
 119 static 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
 145 static 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
 173 static 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
 202 out_err:
 203         mt76x0u_cleanup(dev);
 204         return err;
 205 }
 206
 207 static 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
 277 err:
 278         usb_set_intfdata(usb_intf, NULL);
 279         usb_put_dev(interface_to_usbdev(usb_intf));
 280         mt76u_deinit(&dev->mt76);
 281
 282         ieee80211_free_hw(mdev->hw);
 283         return ret;
 284 }
 285
 286 static void mt76x0_disconnect(struct usb_interface *usb_intf)
 287 {
 288         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 289         bool initialized = test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 290
 291         if (!initialized)
 292                 return;
 293
 294         ieee80211_unregister_hw(dev->mt76.hw);
 295         mt76x0u_cleanup(dev);
 296
 297         usb_set_intfdata(usb_intf, NULL);
 298         usb_put_dev(interface_to_usbdev(usb_intf));
 299
 300         mt76u_deinit(&dev->mt76);
 301         ieee80211_free_hw(dev->mt76.hw);
 302 }
 303
 304 static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
 305                                          pm_message_t state)
 306 {
 307         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 308
 309         mt76u_stop_rx(&dev->mt76);
 310         clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
 311         mt76x0_chip_onoff(dev, false, false);
 312
 313         return 0;
 314 }
 315
 316 static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
 317 {
 318         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 319         int ret;
 320
 321         ret = mt76u_resume_rx(&dev->mt76);
 322         if (ret < 0)
 323                 goto err;
 324
 325         ret = mt76x0u_init_hardware(dev, false);
 326         if (ret)
 327                 goto err;
 328
 329         return 0;
 330 err:
 331         mt76x0u_cleanup(dev);
 332         return ret;
 333 }
 334
 335 MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
 336 MODULE_FIRMWARE(MT7610E_FIRMWARE);
 337 MODULE_FIRMWARE(MT7610U_FIRMWARE);
 338 MODULE_LICENSE("GPL");
 339
 340 static struct usb_driver mt76x0_driver = {
 341         .name           = KBUILD_MODNAME,
 342         .id_table       = mt76x0_device_table,
 343         .probe          = mt76x0u_probe,
 344         .disconnect     = mt76x0_disconnect,
 345         .suspend        = mt76x0_suspend,
 346         .resume         = mt76x0_resume,
 347         .reset_resume   = mt76x0_resume,
 348         .soft_unbind    = 1,
 349         .disable_hub_initiated_lpm = 1,
 350 };
 351 module_usb_driver(mt76x0_driver);