1 /* 2 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 6 * as published by the Free Software Foundation 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 14 #include <linux/kernel.h> 15 #include <linux/module.h> 16 #include <linux/usb.h> 17 18 #include "mt76x0.h" 19 #include "mcu.h" 20 #include "../mt76x02_usb.h" 21 22 static struct usb_device_id mt76x0_device_table[] = { 23 { USB_DEVICE(0x148F, 0x7610) }, /* MT7610U */ 24 { USB_DEVICE(0x13B1, 0x003E) }, /* Linksys AE6000 */ 25 { USB_DEVICE(0x0E8D, 0x7610) }, /* Sabrent NTWLAC */ 26 { USB_DEVICE(0x7392, 0xa711) }, /* Edimax 7711mac */ 27 { USB_DEVICE(0x7392, 0xb711) }, /* Edimax / Elecom */ 28 { USB_DEVICE(0x148f, 0x761a) }, /* TP-Link TL-WDN5200 */ 29 { USB_DEVICE(0x148f, 0x760a) }, /* TP-Link unknown */ 30 { USB_DEVICE(0x0b05, 0x17d1) }, /* Asus USB-AC51 */ 31 { USB_DEVICE(0x0b05, 0x17db) }, /* Asus USB-AC50 */ 32 { USB_DEVICE(0x0df6, 0x0075) }, /* Sitecom WLA-3100 */ 33 { USB_DEVICE(0x2019, 0xab31) }, /* Planex GW-450D */ 34 { USB_DEVICE(0x2001, 0x3d02) }, /* D-LINK DWA-171 rev B1 */ 35 { USB_DEVICE(0x0586, 0x3425) }, /* Zyxel NWD6505 */ 36 { USB_DEVICE(0x07b8, 0x7610) }, /* AboCom AU7212 */ 37 { USB_DEVICE(0x04bb, 0x0951) }, /* I-O DATA WN-AC433UK */ 38 { USB_DEVICE(0x057c, 0x8502) }, /* AVM FRITZ!WLAN USB Stick AC 430 */ 39 { USB_DEVICE(0x293c, 0x5702) }, /* Comcast Xfinity KXW02AAA */ 40 { USB_DEVICE(0x20f4, 0x806b) }, /* TRENDnet TEW-806UBH */ 41 { USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */ 42 { USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac Stick */ 43 { USB_DEVICE(0x2357, 0x0105), 44 .driver_info = 1, }, /* TP-LINK Archer T1U */ 45 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)}, /* MT7630U */ 46 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)}, /* MT7650U */ 47 { 0, } 48 }; 49 50 static void mt76x0_init_usb_dma(struct mt76x02_dev *dev) 51 { 52 u32 val; 53 54 val = mt76_rr(dev, MT_USB_DMA_CFG); 55 56 val |= MT_USB_DMA_CFG_RX_BULK_EN | 57 MT_USB_DMA_CFG_TX_BULK_EN; 58 59 /* disable AGGR_BULK_RX in order to receive one 60 * frame in each rx urb and avoid copies 61 */ 62 val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN; 63 mt76_wr(dev, MT_USB_DMA_CFG, val); 64 65 val = mt76_rr(dev, MT_COM_REG0); 66 if (val & 1) 67 dev_dbg(dev->mt76.dev, "MCU not ready\n"); 68 69 val = mt76_rr(dev, MT_USB_DMA_CFG); 70 71 val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD; 72 mt76_wr(dev, MT_USB_DMA_CFG, val); 73 val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD; 74 mt76_wr(dev, MT_USB_DMA_CFG, val); 75 } 76 77 static void mt76x0u_cleanup(struct mt76x02_dev *dev) 78 { 79 clear_bit(MT76_STATE_INITIALIZED, &dev->mt76.state); 80 mt76x0_chip_onoff(dev, false, false); 81 mt76u_queues_deinit(&dev->mt76); 82 } 83 84 static void mt76x0u_stop(struct ieee80211_hw *hw) 85 { 86 struct mt76x02_dev *dev = hw->priv; 87 88 clear_bit(MT76_STATE_RUNNING, &dev->mt76.state); 89 cancel_delayed_work_sync(&dev->cal_work); 90 cancel_delayed_work_sync(&dev->mt76.mac_work); 91 mt76u_stop_tx(&dev->mt76); 92 mt76x02u_exit_beacon_config(dev); 93 94 if (test_bit(MT76_REMOVED, &dev->mt76.state)) 95 return; 96 97 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000)) 98 dev_warn(dev->mt76.dev, "TX DMA did not stop\n"); 99 100 mt76x0_mac_stop(dev); 101 102 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000)) 103 dev_warn(dev->mt76.dev, "RX DMA did not stop\n"); 104 } 105 106 static int mt76x0u_start(struct ieee80211_hw *hw) 107 { 108 struct mt76x02_dev *dev = hw->priv; 109 int ret; 110 111 ret = mt76x0_mac_start(dev); 112 if (ret) 113 return ret; 114 115 mt76x0_phy_calibrate(dev, true); 116 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mt76.mac_work, 117 MT_MAC_WORK_INTERVAL); 118 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work, 119 MT_CALIBRATE_INTERVAL); 120 set_bit(MT76_STATE_RUNNING, &dev->mt76.state); 121 return 0; 122 } 123 124 static const struct ieee80211_ops mt76x0u_ops = { 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 .set_key = mt76x02_set_key, 135 .conf_tx = mt76x02_conf_tx, 136 .sw_scan_start = mt76x02_sw_scan, 137 .sw_scan_complete = mt76x02_sw_scan_complete, 138 .ampdu_action = mt76x02_ampdu_action, 139 .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update, 140 .set_rts_threshold = mt76x02_set_rts_threshold, 141 .wake_tx_queue = mt76_wake_tx_queue, 142 .get_txpower = mt76_get_txpower, 143 .set_tim = mt76_set_tim, 144 .release_buffered_frames = mt76_release_buffered_frames, 145 }; 146 147 static int mt76x0u_init_hardware(struct mt76x02_dev *dev) 148 { 149 int err; 150 151 mt76x0_chip_onoff(dev, true, true); 152 153 if (!mt76x02_wait_for_mac(&dev->mt76)) 154 return -ETIMEDOUT; 155 156 err = mt76x0u_mcu_init(dev); 157 if (err < 0) 158 return err; 159 160 mt76x0_init_usb_dma(dev); 161 err = mt76x0_init_hardware(dev); 162 if (err < 0) 163 return err; 164 165 mt76x02u_init_beacon_config(dev); 166 167 mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e); 168 mt76_wr(dev, MT_TXOP_CTRL_CFG, 169 FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) | 170 FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58)); 171 172 return 0; 173 } 174 175 static int mt76x0u_register_device(struct mt76x02_dev *dev) 176 { 177 struct ieee80211_hw *hw = dev->mt76.hw; 178 int err; 179 180 err = mt76u_alloc_queues(&dev->mt76); 181 if (err < 0) 182 goto out_err; 183 184 err = mt76x0u_init_hardware(dev); 185 if (err < 0) 186 goto out_err; 187 188 err = mt76x0_register_device(dev); 189 if (err < 0) 190 goto out_err; 191 192 /* check hw sg support in order to enable AMSDU */ 193 if (dev->mt76.usb.sg_en) 194 hw->max_tx_fragments = MT_SG_MAX_SIZE; 195 else 196 hw->max_tx_fragments = 1; 197 198 set_bit(MT76_STATE_INITIALIZED, &dev->mt76.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 .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_dev->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 initalize 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)); 277 278 ieee80211_free_hw(mdev->hw); 279 return ret; 280 } 281 282 static void mt76x0_disconnect(struct usb_interface *usb_intf) 283 { 284 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); 285 bool initalized = test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state); 286 287 if (!initalized) 288 return; 289 290 ieee80211_unregister_hw(dev->mt76.hw); 291 mt76x0u_cleanup(dev); 292 293 usb_set_intfdata(usb_intf, NULL); 294 usb_put_dev(interface_to_usbdev(usb_intf)); 295 296 ieee80211_free_hw(dev->mt76.hw); 297 } 298 299 static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf, 300 pm_message_t state) 301 { 302 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); 303 304 mt76u_stop_rx(&dev->mt76); 305 clear_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state); 306 mt76x0_chip_onoff(dev, false, false); 307 308 return 0; 309 } 310 311 static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf) 312 { 313 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); 314 int ret; 315 316 ret = mt76u_resume_rx(&dev->mt76); 317 if (ret < 0) 318 goto err; 319 320 ret = mt76x0u_init_hardware(dev); 321 if (ret) 322 goto err; 323 324 return 0; 325 err: 326 mt76x0u_cleanup(dev); 327 return ret; 328 } 329 330 MODULE_DEVICE_TABLE(usb, mt76x0_device_table); 331 MODULE_FIRMWARE(MT7610E_FIRMWARE); 332 MODULE_FIRMWARE(MT7610U_FIRMWARE); 333 MODULE_LICENSE("GPL"); 334 335 static struct usb_driver mt76x0_driver = { 336 .name = KBUILD_MODNAME, 337 .id_table = mt76x0_device_table, 338 .probe = mt76x0u_probe, 339 .disconnect = mt76x0_disconnect, 340 .suspend = mt76x0_suspend, 341 .resume = mt76x0_resume, 342 .reset_resume = mt76x0_resume, 343 .soft_unbind = 1, 344 .disable_hub_initiated_lpm = 1, 345 }; 346 module_usb_driver(mt76x0_driver); 347