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->mt76.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->mt76.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->mt76.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->mt76.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         .set_key = mt76x02_set_key,
 130         .conf_tx = mt76x02_conf_tx,
 131         .sw_scan_start = mt76_sw_scan,
 132         .sw_scan_complete = mt76x02_sw_scan_complete,
 133         .ampdu_action = mt76x02_ampdu_action,
 134         .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
 135         .set_rts_threshold = mt76x02_set_rts_threshold,
 136         .wake_tx_queue = mt76_wake_tx_queue,
 137         .get_txpower = mt76_get_txpower,
 138         .get_survey = mt76_get_survey,
 139         .set_tim = mt76_set_tim,
 140         .release_buffered_frames = mt76_release_buffered_frames,
 141         .get_antenna = mt76_get_antenna,
 142 };
 143
 144 static int mt76x0u_init_hardware(struct mt76x02_dev *dev, bool reset)
 145 {
 146         int err;
 147
 148         mt76x0_chip_onoff(dev, true, reset);
 149
 150         if (!mt76x02_wait_for_mac(&dev->mt76))
 151                 return -ETIMEDOUT;
 152
 153         err = mt76x0u_mcu_init(dev);
 154         if (err < 0)
 155                 return err;
 156
 157         mt76x0_init_usb_dma(dev);
 158         err = mt76x0_init_hardware(dev);
 159         if (err < 0)
 160                 return err;
 161
 162         mt76x02u_init_beacon_config(dev);
 163
 164         mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
 165         mt76_wr(dev, MT_TXOP_CTRL_CFG,
 166                 FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
 167                 FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
 168
 169         return 0;
 170 }
 171
 172 static int mt76x0u_register_device(struct mt76x02_dev *dev)
 173 {
 174         struct ieee80211_hw *hw = dev->mt76.hw;
 175         int err;
 176
 177         err = mt76u_alloc_queues(&dev->mt76);
 178         if (err < 0)
 179                 goto out_err;
 180
 181         err = mt76x0u_init_hardware(dev, true);
 182         if (err < 0)
 183                 goto out_err;
 184
 185         err = mt76x0_register_device(dev);
 186         if (err < 0)
 187                 goto out_err;
 188
 189         /* check hw sg support in order to enable AMSDU */
 190         if (dev->mt76.usb.sg_en)
 191                 hw->max_tx_fragments = MT_TX_SG_MAX_SIZE;
 192         else
 193                 hw->max_tx_fragments = 1;
 194
 195         set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
 196
 197         return 0;
 198
 199 out_err:
 200         mt76x0u_cleanup(dev);
 201         return err;
 202 }
 203
 204 static int mt76x0u_probe(struct usb_interface *usb_intf,
 205                          const struct usb_device_id *id)
 206 {
 207         static const struct mt76_driver_ops drv_ops = {
 208                 .drv_flags = MT_DRV_SW_RX_AIRTIME,
 209                 .survey_flags = SURVEY_INFO_TIME_TX,
 210                 .update_survey = mt76x02_update_channel,
 211                 .tx_prepare_skb = mt76x02u_tx_prepare_skb,
 212                 .tx_complete_skb = mt76x02u_tx_complete_skb,
 213                 .tx_status_data = mt76x02_tx_status_data,
 214                 .rx_skb = mt76x02_queue_rx_skb,
 215                 .sta_ps = mt76x02_sta_ps,
 216                 .sta_add = mt76x02_sta_add,
 217                 .sta_remove = mt76x02_sta_remove,
 218         };
 219         struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
 220         struct mt76x02_dev *dev;
 221         struct mt76_dev *mdev;
 222         u32 mac_rev;
 223         int ret;
 224
 225         mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), &mt76x0u_ops,
 226                                  &drv_ops);
 227         if (!mdev)
 228                 return -ENOMEM;
 229
 230         dev = container_of(mdev, struct mt76x02_dev, mt76);
 231         mutex_init(&dev->phy_mutex);
 232
 233         /* Quirk for Archer T1U */
 234         if (id->driver_info)
 235                 dev->no_2ghz = true;
 236
 237         usb_dev = usb_get_dev(usb_dev);
 238         usb_reset_device(usb_dev);
 239
 240         usb_set_intfdata(usb_intf, dev);
 241
 242         mt76x02u_init_mcu(mdev);
 243         ret = mt76u_init(mdev, usb_intf);
 244         if (ret)
 245                 goto err;
 246
 247         /* Disable the HW, otherwise MCU fail to initialize on hot reboot */
 248         mt76x0_chip_onoff(dev, false, false);
 249
 250         if (!mt76x02_wait_for_mac(mdev)) {
 251                 ret = -ETIMEDOUT;
 252                 goto err;
 253         }
 254
 255         mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
 256         mac_rev = mt76_rr(dev, MT_MAC_CSR0);
 257         dev_info(mdev->dev, "ASIC revision: %08x MAC revision: %08x\n",
 258                  mdev->rev, mac_rev);
 259         if (!is_mt76x0(dev)) {
 260                 ret = -ENODEV;
 261                 goto err;
 262         }
 263
 264         /* Note: vendor driver skips this check for MT76X0U */
 265         if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
 266                 dev_warn(mdev->dev, "Warning: eFUSE not present\n");
 267
 268         ret = mt76x0u_register_device(dev);
 269         if (ret < 0)
 270                 goto err;
 271
 272         return 0;
 273
 274 err:
 275         usb_set_intfdata(usb_intf, NULL);
 276         usb_put_dev(interface_to_usbdev(usb_intf));
 277         mt76u_deinit(&dev->mt76);
 278
 279         ieee80211_free_hw(mdev->hw);
 280         return ret;
 281 }
 282
 283 static void mt76x0_disconnect(struct usb_interface *usb_intf)
 284 {
 285         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 286         bool initialized = test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
 287
 288         if (!initialized)
 289                 return;
 290
 291         ieee80211_unregister_hw(dev->mt76.hw);
 292         mt76x0u_cleanup(dev);
 293
 294         usb_set_intfdata(usb_intf, NULL);
 295         usb_put_dev(interface_to_usbdev(usb_intf));
 296
 297         mt76u_deinit(&dev->mt76);
 298         ieee80211_free_hw(dev->mt76.hw);
 299 }
 300
 301 static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
 302                                          pm_message_t state)
 303 {
 304         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 305
 306         mt76u_stop_rx(&dev->mt76);
 307         clear_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state);
 308         mt76x0_chip_onoff(dev, false, false);
 309
 310         return 0;
 311 }
 312
 313 static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
 314 {
 315         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 316         int ret;
 317
 318         ret = mt76u_resume_rx(&dev->mt76);
 319         if (ret < 0)
 320                 goto err;
 321
 322         ret = mt76x0u_init_hardware(dev, false);
 323         if (ret)
 324                 goto err;
 325
 326         return 0;
 327 err:
 328         mt76x0u_cleanup(dev);
 329         return ret;
 330 }
 331
 332 MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
 333 MODULE_FIRMWARE(MT7610E_FIRMWARE);
 334 MODULE_FIRMWARE(MT7610U_FIRMWARE);
 335 MODULE_LICENSE("GPL");
 336
 337 static struct usb_driver mt76x0_driver = {
 338         .name           = KBUILD_MODNAME,
 339         .id_table       = mt76x0_device_table,
 340         .probe          = mt76x0u_probe,
 341         .disconnect     = mt76x0_disconnect,
 342         .suspend        = mt76x0_suspend,
 343         .resume         = mt76x0_resume,
 344         .reset_resume   = mt76x0_resume,
 345         .soft_unbind    = 1,
 346         .disable_hub_initiated_lpm = 1,
 347 };
 348 module_usb_driver(mt76x0_driver);