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_US_v1 */
  36         { USB_DEVICE(0x2357, 0x010b) }, /* TP-LINK T2UHP_UN_v1 */
  37         /* TP-LINK Archer T1U */
  38         { USB_DEVICE(0x2357, 0x0105), .driver_info = 1, },
  39         /* MT7630U */
  40         { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)},
  41         /* MT7650U */
  42         { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)},
  43         { 0, }
  44 };
  45
  46 static void mt76x0_init_usb_dma(struct mt76x02_dev *dev)
  47 {
  48         u32 val;
  49
  50         val = mt76_rr(dev, MT_USB_DMA_CFG);
  51
  52         val |= MT_USB_DMA_CFG_RX_BULK_EN |
  53                MT_USB_DMA_CFG_TX_BULK_EN;
  54
  55         /* disable AGGR_BULK_RX in order to receive one
  56          * frame in each rx urb and avoid copies
  57          */
  58         val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN;
  59         mt76_wr(dev, MT_USB_DMA_CFG, val);
  60
  61         val = mt76_rr(dev, MT_COM_REG0);
  62         if (val & 1)
  63                 dev_dbg(dev->mt76.dev, "MCU not ready\n");
  64
  65         val = mt76_rr(dev, MT_USB_DMA_CFG);
  66
  67         val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD;
  68         mt76_wr(dev, MT_USB_DMA_CFG, val);
  69         val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD;
  70         mt76_wr(dev, MT_USB_DMA_CFG, val);
  71 }
  72
  73 static void mt76x0u_cleanup(struct mt76x02_dev *dev)
  74 {
  75         clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
  76         mt76x0_chip_onoff(dev, false, false);
  77         mt76u_queues_deinit(&dev->mt76);
  78 }
  79
  80 static void mt76x0u_stop(struct ieee80211_hw *hw, bool suspend)
  81 {
  82         struct mt76x02_dev *dev = hw->priv;
  83
  84         clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
  85         cancel_delayed_work_sync(&dev->cal_work);
  86         cancel_delayed_work_sync(&dev->mphy.mac_work);
  87         mt76u_stop_tx(&dev->mt76);
  88         mt76x02u_exit_beacon_config(dev);
  89
  90         if (test_bit(MT76_REMOVED, &dev->mphy.state))
  91                 return;
  92
  93         if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000))
  94                 dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
  95
  96         mt76x0_mac_stop(dev);
  97
  98         if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000))
  99                 dev_warn(dev->mt76.dev, "RX DMA did not stop\n");
 100 }
 101
 102 static int mt76x0u_start(struct ieee80211_hw *hw)
 103 {
 104         struct mt76x02_dev *dev = hw->priv;
 105         int ret;
 106
 107         ret = mt76x02u_mac_start(dev);
 108         if (ret)
 109                 return ret;
 110
 111         mt76x0_phy_calibrate(dev, true);
 112         ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mphy.mac_work,
 113                                      MT_MAC_WORK_INTERVAL);
 114         ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
 115                                      MT_CALIBRATE_INTERVAL);
 116         set_bit(MT76_STATE_RUNNING, &dev->mphy.state);
 117         return 0;
 118 }
 119
 120 static const struct ieee80211_ops mt76x0u_ops = {
 121         .add_chanctx = ieee80211_emulate_add_chanctx,
 122         .remove_chanctx = ieee80211_emulate_remove_chanctx,
 123         .change_chanctx = ieee80211_emulate_change_chanctx,
 124         .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
 125         .tx = mt76x02_tx,
 126         .start = mt76x0u_start,
 127         .stop = mt76x0u_stop,
 128         .add_interface = mt76x02_add_interface,
 129         .remove_interface = mt76x02_remove_interface,
 130         .config = mt76x0_config,
 131         .configure_filter = mt76x02_configure_filter,
 132         .bss_info_changed = mt76x02_bss_info_changed,
 133         .sta_state = mt76_sta_state,
 134         .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
 135         .set_key = mt76x02_set_key,
 136         .conf_tx = mt76x02_conf_tx,
 137         .sw_scan_start = mt76_sw_scan,
 138         .sw_scan_complete = mt76x02_sw_scan_complete,
 139         .ampdu_action = mt76x02_ampdu_action,
 140         .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
 141         .set_rts_threshold = mt76x02_set_rts_threshold,
 142         .wake_tx_queue = mt76_wake_tx_queue,
 143         .get_txpower = mt76_get_txpower,
 144         .get_survey = mt76_get_survey,
 145         .set_tim = mt76_set_tim,
 146         .release_buffered_frames = mt76_release_buffered_frames,
 147         .get_antenna = mt76_get_antenna,
 148         .set_sar_specs = mt76x0_set_sar_specs,
 149 };
 150
 151 static int mt76x0u_init_hardware(struct mt76x02_dev *dev, bool reset)
 152 {
 153         int err;
 154
 155         mt76x0_chip_onoff(dev, true, reset);
 156
 157         if (!mt76x02_wait_for_mac(&dev->mt76))
 158                 return -ETIMEDOUT;
 159
 160         err = mt76x0u_mcu_init(dev);
 161         if (err < 0)
 162                 return err;
 163
 164         mt76x0_init_usb_dma(dev);
 165         err = mt76x0_init_hardware(dev);
 166         if (err < 0)
 167                 return err;
 168
 169         mt76x02u_init_beacon_config(dev);
 170
 171         mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
 172         mt76_wr(dev, MT_TXOP_CTRL_CFG,
 173                 FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
 174                 FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
 175
 176         return 0;
 177 }
 178
 179 static int mt76x0u_register_device(struct mt76x02_dev *dev)
 180 {
 181         struct ieee80211_hw *hw = dev->mt76.hw;
 182         struct mt76_usb *usb = &dev->mt76.usb;
 183         int err;
 184
 185         usb->mcu.data = devm_kmalloc(dev->mt76.dev, MCU_RESP_URB_SIZE,
 186                                      GFP_KERNEL);
 187         if (!usb->mcu.data)
 188                 return -ENOMEM;
 189
 190         err = mt76u_alloc_queues(&dev->mt76);
 191         if (err < 0)
 192                 goto out_err;
 193
 194         err = mt76x0u_init_hardware(dev, true);
 195         if (err < 0)
 196                 goto out_err;
 197
 198         /* check hw sg support in order to enable AMSDU */
 199         hw->max_tx_fragments = dev->mt76.usb.sg_en ? MT_TX_SG_MAX_SIZE : 1;
 200         err = mt76x0_register_device(dev);
 201         if (err < 0)
 202                 goto out_err;
 203
 204         set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 205
 206         return 0;
 207
 208 out_err:
 209         mt76x0u_cleanup(dev);
 210         return err;
 211 }
 212
 213 static int mt76x0u_probe(struct usb_interface *usb_intf,
 214                          const struct usb_device_id *id)
 215 {
 216         static const struct mt76_driver_ops drv_ops = {
 217                 .drv_flags = MT_DRV_SW_RX_AIRTIME,
 218                 .survey_flags = SURVEY_INFO_TIME_TX,
 219                 .update_survey = mt76x02_update_channel,
 220                 .set_channel = mt76x0_set_channel,
 221                 .tx_prepare_skb = mt76x02u_tx_prepare_skb,
 222                 .tx_complete_skb = mt76x02u_tx_complete_skb,
 223                 .tx_status_data = mt76x02_tx_status_data,
 224                 .rx_skb = mt76x02_queue_rx_skb,
 225                 .sta_ps = mt76x02_sta_ps,
 226                 .sta_add = mt76x02_sta_add,
 227                 .sta_remove = mt76x02_sta_remove,
 228         };
 229         struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
 230         struct mt76x02_dev *dev;
 231         struct mt76_dev *mdev;
 232         u32 mac_rev;
 233         int ret;
 234
 235         mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), &mt76x0u_ops,
 236                                  &drv_ops);
 237         if (!mdev)
 238                 return -ENOMEM;
 239
 240         dev = container_of(mdev, struct mt76x02_dev, mt76);
 241         mutex_init(&dev->phy_mutex);
 242
 243         /* Quirk for Archer T1U */
 244         if (id->driver_info)
 245                 dev->no_2ghz = true;
 246
 247         usb_dev = usb_get_dev(usb_dev);
 248         usb_reset_device(usb_dev);
 249
 250         usb_set_intfdata(usb_intf, dev);
 251
 252         mt76x02u_init_mcu(mdev);
 253         ret = mt76u_init(mdev, usb_intf);
 254         if (ret)
 255                 goto err;
 256
 257         /* Disable the HW, otherwise MCU fail to initialize on hot reboot */
 258         mt76x0_chip_onoff(dev, false, false);
 259
 260         if (!mt76x02_wait_for_mac(mdev)) {
 261                 ret = -ETIMEDOUT;
 262                 goto err;
 263         }
 264
 265         mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
 266         mac_rev = mt76_rr(dev, MT_MAC_CSR0);
 267         dev_info(mdev->dev, "ASIC revision: %08x MAC revision: %08x\n",
 268                  mdev->rev, mac_rev);
 269         if (!is_mt76x0(dev)) {
 270                 ret = -ENODEV;
 271                 goto err;
 272         }
 273
 274         /* Note: vendor driver skips this check for MT76X0U */
 275         if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL))
 276                 dev_warn(mdev->dev, "Warning: eFUSE not present\n");
 277
 278         ret = mt76x0u_register_device(dev);
 279         if (ret < 0)
 280                 goto err;
 281
 282         return 0;
 283
 284 err:
 285         usb_set_intfdata(usb_intf, NULL);
 286         usb_put_dev(interface_to_usbdev(usb_intf));
 287         mt76u_queues_deinit(&dev->mt76);
 288         mt76_free_device(&dev->mt76);
 289
 290         return ret;
 291 }
 292
 293 static void mt76x0_disconnect(struct usb_interface *usb_intf)
 294 {
 295         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 296         bool initialized = test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 297
 298         if (!initialized)
 299                 return;
 300
 301         ieee80211_unregister_hw(dev->mt76.hw);
 302         mt76x0u_cleanup(dev);
 303
 304         usb_set_intfdata(usb_intf, NULL);
 305         usb_put_dev(interface_to_usbdev(usb_intf));
 306
 307         mt76_free_device(&dev->mt76);
 308 }
 309
 310 static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
 311                                          pm_message_t state)
 312 {
 313         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 314
 315         mt76u_stop_rx(&dev->mt76);
 316         clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
 317         mt76x0_chip_onoff(dev, false, false);
 318
 319         return 0;
 320 }
 321
 322 static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
 323 {
 324         struct mt76x02_dev *dev = usb_get_intfdata(usb_intf);
 325         int ret;
 326
 327         ret = mt76u_resume_rx(&dev->mt76);
 328         if (ret < 0)
 329                 goto err;
 330
 331         ret = mt76x0u_init_hardware(dev, false);
 332         if (ret)
 333                 goto err;
 334
 335         return 0;
 336 err:
 337         mt76x0u_cleanup(dev);
 338         return ret;
 339 }
 340
 341 MODULE_DEVICE_TABLE(usb, mt76x0_device_table);
 342 MODULE_FIRMWARE(MT7610E_FIRMWARE);
 343 MODULE_FIRMWARE(MT7610U_FIRMWARE);
 344 MODULE_DESCRIPTION("MediaTek MT76x0U (USB) wireless driver");
 345 MODULE_LICENSE("GPL");
 346
 347 static struct usb_driver mt76x0_driver = {
 348         .name           = KBUILD_MODNAME,
 349         .id_table       = mt76x0_device_table,
 350         .probe          = mt76x0u_probe,
 351         .disconnect     = mt76x0_disconnect,
 352         .suspend        = mt76x0_suspend,
 353         .resume         = mt76x0_resume,
 354         .reset_resume   = mt76x0_resume,
 355         .soft_unbind    = 1,
 356         .disable_hub_initiated_lpm = 1,
 357 };
 358 module_usb_driver(mt76x0_driver);