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 "trace.h" 21 #include "../mt76x02_usb.h" 22 23 static struct usb_device_id mt76x0_device_table[] = { 24 { USB_DEVICE(0x148F, 0x7610) }, /* MT7610U */ 25 { USB_DEVICE(0x13B1, 0x003E) }, /* Linksys AE6000 */ 26 { USB_DEVICE(0x0E8D, 0x7610) }, /* Sabrent NTWLAC */ 27 { USB_DEVICE(0x7392, 0xa711) }, /* Edimax 7711mac */ 28 { USB_DEVICE(0x7392, 0xb711) }, /* Edimax / Elecom */ 29 { USB_DEVICE(0x148f, 0x761a) }, /* TP-Link TL-WDN5200 */ 30 { USB_DEVICE(0x148f, 0x760a) }, /* TP-Link unknown */ 31 { USB_DEVICE(0x0b05, 0x17d1) }, /* Asus USB-AC51 */ 32 { USB_DEVICE(0x0b05, 0x17db) }, /* Asus USB-AC50 */ 33 { USB_DEVICE(0x0df6, 0x0075) }, /* Sitecom WLA-3100 */ 34 { USB_DEVICE(0x2019, 0xab31) }, /* Planex GW-450D */ 35 { USB_DEVICE(0x2001, 0x3d02) }, /* D-LINK DWA-171 rev B1 */ 36 { USB_DEVICE(0x0586, 0x3425) }, /* Zyxel NWD6505 */ 37 { USB_DEVICE(0x07b8, 0x7610) }, /* AboCom AU7212 */ 38 { USB_DEVICE(0x04bb, 0x0951) }, /* I-O DATA WN-AC433UK */ 39 { USB_DEVICE(0x057c, 0x8502) }, /* AVM FRITZ!WLAN USB Stick AC 430 */ 40 { USB_DEVICE(0x293c, 0x5702) }, /* Comcast Xfinity KXW02AAA */ 41 { USB_DEVICE(0x20f4, 0x806b) }, /* TRENDnet TEW-806UBH */ 42 { USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */ 43 { USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac Stick */ 44 { USB_DEVICE(0x2357, 0x0105), 45 .driver_info = 1, }, /* TP-LINK Archer T1U */ 46 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)}, /* MT7630U */ 47 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)}, /* MT7650U */ 48 { 0, } 49 }; 50 51 static void mt76x0_init_usb_dma(struct mt76x02_dev *dev) 52 { 53 u32 val; 54 55 val = mt76_rr(dev, MT_USB_DMA_CFG); 56 57 val |= MT_USB_DMA_CFG_RX_BULK_EN | 58 MT_USB_DMA_CFG_TX_BULK_EN; 59 60 /* disable AGGR_BULK_RX in order to receive one 61 * frame in each rx urb and avoid copies 62 */ 63 val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN; 64 mt76_wr(dev, MT_USB_DMA_CFG, val); 65 66 val = mt76_rr(dev, MT_COM_REG0); 67 if (val & 1) 68 dev_dbg(dev->mt76.dev, "MCU not ready\n"); 69 70 val = mt76_rr(dev, MT_USB_DMA_CFG); 71 72 val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD; 73 mt76_wr(dev, MT_USB_DMA_CFG, val); 74 val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD; 75 mt76_wr(dev, MT_USB_DMA_CFG, val); 76 } 77 78 static void mt76x0u_cleanup(struct mt76x02_dev *dev) 79 { 80 clear_bit(MT76_STATE_INITIALIZED, &dev->mt76.state); 81 mt76x0_chip_onoff(dev, false, false); 82 mt76u_queues_deinit(&dev->mt76); 83 mt76u_mcu_deinit(&dev->mt76); 84 } 85 86 static void mt76x0u_mac_stop(struct mt76x02_dev *dev) 87 { 88 clear_bit(MT76_STATE_RUNNING, &dev->mt76.state); 89 cancel_delayed_work_sync(&dev->cal_work); 90 cancel_delayed_work_sync(&dev->mac_work); 91 mt76u_stop_stat_wk(&dev->mt76); 92 93 if (test_bit(MT76_REMOVED, &dev->mt76.state)) 94 return; 95 96 mt76_clear(dev, MT_BEACON_TIME_CFG, MT_BEACON_TIME_CFG_TIMER_EN | 97 MT_BEACON_TIME_CFG_SYNC_MODE | MT_BEACON_TIME_CFG_TBTT_EN | 98 MT_BEACON_TIME_CFG_BEACON_TX); 99 100 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000)) 101 dev_warn(dev->mt76.dev, "TX DMA did not stop\n"); 102 103 mt76x0_mac_stop(dev); 104 105 if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000)) 106 dev_warn(dev->mt76.dev, "RX DMA did not stop\n"); 107 } 108 109 static int mt76x0u_start(struct ieee80211_hw *hw) 110 { 111 struct mt76x02_dev *dev = hw->priv; 112 int ret; 113 114 mutex_lock(&dev->mt76.mutex); 115 116 ret = mt76x0_mac_start(dev); 117 if (ret) 118 goto out; 119 120 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mac_work, 121 MT_CALIBRATE_INTERVAL); 122 ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work, 123 MT_CALIBRATE_INTERVAL); 124 set_bit(MT76_STATE_RUNNING, &dev->mt76.state); 125 126 out: 127 mutex_unlock(&dev->mt76.mutex); 128 return ret; 129 } 130 131 static void mt76x0u_stop(struct ieee80211_hw *hw) 132 { 133 struct mt76x02_dev *dev = hw->priv; 134 135 mutex_lock(&dev->mt76.mutex); 136 mt76x0u_mac_stop(dev); 137 mutex_unlock(&dev->mt76.mutex); 138 } 139 140 static const struct ieee80211_ops mt76x0u_ops = { 141 .tx = mt76x02_tx, 142 .start = mt76x0u_start, 143 .stop = mt76x0u_stop, 144 .add_interface = mt76x02_add_interface, 145 .remove_interface = mt76x02_remove_interface, 146 .config = mt76x0_config, 147 .configure_filter = mt76x02_configure_filter, 148 .bss_info_changed = mt76x0_bss_info_changed, 149 .sta_add = mt76x02_sta_add, 150 .sta_remove = mt76x02_sta_remove, 151 .set_key = mt76x02_set_key, 152 .conf_tx = mt76x02_conf_tx, 153 .sw_scan_start = mt76x0_sw_scan, 154 .sw_scan_complete = mt76x0_sw_scan_complete, 155 .ampdu_action = mt76x02_ampdu_action, 156 .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update, 157 .set_rts_threshold = mt76x0_set_rts_threshold, 158 .wake_tx_queue = mt76_wake_tx_queue, 159 }; 160 161 static int mt76x0u_register_device(struct mt76x02_dev *dev) 162 { 163 struct ieee80211_hw *hw = dev->mt76.hw; 164 int err; 165 166 err = mt76u_alloc_queues(&dev->mt76); 167 if (err < 0) 168 goto out_err; 169 170 err = mt76u_mcu_init_rx(&dev->mt76); 171 if (err < 0) 172 goto out_err; 173 174 mt76x0_chip_onoff(dev, true, true); 175 if (!mt76x02_wait_for_mac(&dev->mt76)) { 176 err = -ETIMEDOUT; 177 goto out_err; 178 } 179 180 err = mt76x0u_mcu_init(dev); 181 if (err < 0) 182 goto out_err; 183 184 mt76x0_init_usb_dma(dev); 185 err = mt76x0_init_hardware(dev); 186 if (err < 0) 187 goto out_err; 188 189 mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e); 190 mt76_wr(dev, MT_TXOP_CTRL_CFG, 191 FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) | 192 FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58)); 193 194 err = mt76x0_register_device(dev); 195 if (err < 0) 196 goto out_err; 197 198 /* check hw sg support in order to enable AMSDU */ 199 if (mt76u_check_sg(&dev->mt76)) 200 hw->max_tx_fragments = MT_SG_MAX_SIZE; 201 else 202 hw->max_tx_fragments = 1; 203 204 set_bit(MT76_STATE_INITIALIZED, &dev->mt76.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 .tx_prepare_skb = mt76x02u_tx_prepare_skb, 218 .tx_complete_skb = mt76x02u_tx_complete_skb, 219 .tx_status_data = mt76x02_tx_status_data, 220 .rx_skb = mt76x02_queue_rx_skb, 221 }; 222 struct usb_device *usb_dev = interface_to_usbdev(usb_intf); 223 struct mt76x02_dev *dev; 224 u32 asic_rev, mac_rev; 225 int ret; 226 227 dev = mt76x0_alloc_device(&usb_intf->dev, &drv_ops, 228 &mt76x0u_ops); 229 if (!dev) 230 return -ENOMEM; 231 232 /* Quirk for Archer T1U */ 233 if (id->driver_info) 234 dev->no_2ghz = true; 235 236 usb_dev = usb_get_dev(usb_dev); 237 usb_reset_device(usb_dev); 238 239 usb_set_intfdata(usb_intf, dev); 240 241 mt76x02u_init_mcu(&dev->mt76); 242 ret = mt76u_init(&dev->mt76, usb_intf); 243 if (ret) 244 goto err; 245 246 /* Disable the HW, otherwise MCU fail to initalize on hot reboot */ 247 mt76x0_chip_onoff(dev, false, false); 248 249 if (!mt76x02_wait_for_mac(&dev->mt76)) { 250 ret = -ETIMEDOUT; 251 goto err; 252 } 253 254 asic_rev = mt76_rr(dev, MT_ASIC_VERSION); 255 mac_rev = mt76_rr(dev, MT_MAC_CSR0); 256 dev_info(dev->mt76.dev, "ASIC revision: %08x MAC revision: %08x\n", 257 asic_rev, mac_rev); 258 259 /* Note: vendor driver skips this check for MT76X0U */ 260 if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL)) 261 dev_warn(dev->mt76.dev, "Warning: eFUSE not present\n"); 262 263 ret = mt76x0u_register_device(dev); 264 if (ret < 0) 265 goto err; 266 267 return 0; 268 269 err: 270 usb_set_intfdata(usb_intf, NULL); 271 usb_put_dev(interface_to_usbdev(usb_intf)); 272 273 ieee80211_free_hw(dev->mt76.hw); 274 return ret; 275 } 276 277 static void mt76x0_disconnect(struct usb_interface *usb_intf) 278 { 279 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); 280 bool initalized = test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state); 281 282 if (!initalized) 283 return; 284 285 ieee80211_unregister_hw(dev->mt76.hw); 286 mt76x0u_cleanup(dev); 287 288 usb_set_intfdata(usb_intf, NULL); 289 usb_put_dev(interface_to_usbdev(usb_intf)); 290 291 ieee80211_free_hw(dev->mt76.hw); 292 } 293 294 static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf, 295 pm_message_t state) 296 { 297 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); 298 struct mt76_usb *usb = &dev->mt76.usb; 299 300 mt76u_stop_queues(&dev->mt76); 301 mt76x0u_mac_stop(dev); 302 usb_kill_urb(usb->mcu.res.urb); 303 304 return 0; 305 } 306 307 static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf) 308 { 309 struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); 310 struct mt76_usb *usb = &dev->mt76.usb; 311 int ret; 312 313 reinit_completion(&usb->mcu.cmpl); 314 ret = mt76u_submit_buf(&dev->mt76, USB_DIR_IN, 315 MT_EP_IN_CMD_RESP, 316 &usb->mcu.res, GFP_KERNEL, 317 mt76u_mcu_complete_urb, 318 &usb->mcu.cmpl); 319 if (ret < 0) 320 goto err; 321 322 ret = mt76u_submit_rx_buffers(&dev->mt76); 323 if (ret < 0) 324 goto err; 325 326 tasklet_enable(&usb->rx_tasklet); 327 tasklet_enable(&usb->tx_tasklet); 328 329 ret = mt76x0_init_hardware(dev); 330 if (ret) 331 goto err; 332 333 return 0; 334 err: 335 mt76x0u_cleanup(dev); 336 return ret; 337 } 338 339 MODULE_DEVICE_TABLE(usb, mt76x0_device_table); 340 MODULE_LICENSE("GPL"); 341 342 static struct usb_driver mt76x0_driver = { 343 .name = KBUILD_MODNAME, 344 .id_table = mt76x0_device_table, 345 .probe = mt76x0u_probe, 346 .disconnect = mt76x0_disconnect, 347 .suspend = mt76x0_suspend, 348 .resume = mt76x0_resume, 349 .reset_resume = mt76x0_resume, 350 .soft_unbind = 1, 351 .disable_hub_initiated_lpm = 1, 352 }; 353 module_usb_driver(mt76x0_driver); 354