1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2022 MediaTek Inc. 3 * 4 * Author: Lorenzo Bianconi <lorenzo@kernel.org> 5 */ 6 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/usb.h> 10 11 #include "mt7921.h" 12 #include "mcu.h" 13 #include "../mt76_connac2_mac.h" 14 15 static const struct usb_device_id mt7921u_device_table[] = { 16 { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7961, 0xff, 0xff, 0xff), 17 .driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM }, 18 /* Comfast CF-952AX */ 19 { USB_DEVICE_AND_INTERFACE_INFO(0x3574, 0x6211, 0xff, 0xff, 0xff), 20 .driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM }, 21 /* Netgear, Inc. [A8000,AXE3000] */ 22 { USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9060, 0xff, 0xff, 0xff), 23 .driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM }, 24 /* Netgear, Inc. A7500 */ 25 { USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9065, 0xff, 0xff, 0xff), 26 .driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM }, 27 /* TP-Link TXE50UH */ 28 { USB_DEVICE_AND_INTERFACE_INFO(0x35bc, 0x0107, 0xff, 0xff, 0xff), 29 .driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM }, 30 { }, 31 }; 32 33 static int 34 mt7921u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, 35 int cmd, int *seq) 36 { 37 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 38 u32 pad, ep; 39 int ret; 40 41 ret = mt76_connac2_mcu_fill_message(mdev, skb, cmd, seq); 42 if (ret) 43 return ret; 44 45 mdev->mcu.timeout = 3 * HZ; 46 47 if (cmd != MCU_CMD(FW_SCATTER)) 48 ep = MT_EP_OUT_INBAND_CMD; 49 else 50 ep = MT_EP_OUT_AC_BE; 51 52 mt792x_skb_add_usb_sdio_hdr(dev, skb, 0); 53 pad = round_up(skb->len, 4) + 4 - skb->len; 54 __skb_put_zero(skb, pad); 55 56 ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL, 57 1000, ep); 58 dev_kfree_skb(skb); 59 60 return ret; 61 } 62 63 static int mt7921u_mcu_init(struct mt792x_dev *dev) 64 { 65 static const struct mt76_mcu_ops mcu_ops = { 66 .headroom = MT_SDIO_HDR_SIZE + 67 sizeof(struct mt76_connac2_mcu_txd), 68 .tailroom = MT_USB_TAIL_SIZE, 69 .mcu_skb_send_msg = mt7921u_mcu_send_message, 70 .mcu_parse_response = mt7921_mcu_parse_response, 71 }; 72 int ret; 73 74 dev->mt76.mcu_ops = &mcu_ops; 75 76 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 77 ret = mt7921_run_firmware(dev); 78 if (ret) 79 return ret; 80 81 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); 82 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 83 84 return 0; 85 } 86 87 static int mt7921u_mac_reset(struct mt792x_dev *dev) 88 { 89 int err; 90 91 mt76_txq_schedule_all(&dev->mphy); 92 mt76_worker_disable(&dev->mt76.tx_worker); 93 94 set_bit(MT76_RESET, &dev->mphy.state); 95 set_bit(MT76_MCU_RESET, &dev->mphy.state); 96 97 wake_up(&dev->mt76.mcu.wait); 98 skb_queue_purge(&dev->mt76.mcu.res_q); 99 100 mt76u_stop_rx(&dev->mt76); 101 mt76u_stop_tx(&dev->mt76); 102 103 mt792xu_wfsys_reset(dev); 104 105 clear_bit(MT76_MCU_RESET, &dev->mphy.state); 106 err = mt76u_resume_rx(&dev->mt76); 107 if (err) 108 goto out; 109 110 err = mt792xu_mcu_power_on(dev); 111 if (err) 112 goto out; 113 114 err = mt792xu_dma_init(dev, false); 115 if (err) 116 goto out; 117 118 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 119 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 120 121 err = mt7921_run_firmware(dev); 122 if (err) 123 goto out; 124 125 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 126 127 err = mt7921_mcu_set_eeprom(dev); 128 if (err) 129 goto out; 130 131 err = mt7921_mac_init(dev); 132 if (err) 133 goto out; 134 135 err = __mt7921_start(&dev->phy); 136 out: 137 clear_bit(MT76_RESET, &dev->mphy.state); 138 139 mt76_worker_enable(&dev->mt76.tx_worker); 140 141 return err; 142 } 143 144 static int mt7921u_probe(struct usb_interface *usb_intf, 145 const struct usb_device_id *id) 146 { 147 static const struct mt76_driver_ops drv_ops = { 148 .txwi_size = MT_SDIO_TXD_SIZE, 149 .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ | 150 MT_DRV_AMSDU_OFFLOAD, 151 .survey_flags = SURVEY_INFO_TIME_TX | 152 SURVEY_INFO_TIME_RX | 153 SURVEY_INFO_TIME_BSS_RX, 154 .tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb, 155 .tx_complete_skb = mt7921_usb_sdio_tx_complete_skb, 156 .tx_status_data = mt7921_usb_sdio_tx_status_data, 157 .rx_skb = mt7921_queue_rx_skb, 158 .rx_check = mt7921_rx_check, 159 .sta_add = mt7921_mac_sta_add, 160 .sta_event = mt7921_mac_sta_event, 161 .sta_remove = mt7921_mac_sta_remove, 162 .update_survey = mt792x_update_channel, 163 .set_channel = mt7921_set_channel, 164 }; 165 static const struct mt792x_hif_ops hif_ops = { 166 .mcu_init = mt7921u_mcu_init, 167 .init_reset = mt792xu_init_reset, 168 .reset = mt7921u_mac_reset, 169 }; 170 static struct mt76_bus_ops bus_ops = { 171 .rr = mt792xu_rr, 172 .wr = mt792xu_wr, 173 .rmw = mt792xu_rmw, 174 .read_copy = mt76u_read_copy, 175 .write_copy = mt792xu_copy, 176 .type = MT76_BUS_USB, 177 }; 178 struct usb_device *udev = interface_to_usbdev(usb_intf); 179 struct ieee80211_ops *ops; 180 struct ieee80211_hw *hw; 181 struct mt792x_dev *dev; 182 struct mt76_dev *mdev; 183 u8 features; 184 int ret; 185 186 ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7921_ops, 187 (void *)id->driver_info, &features); 188 if (!ops) 189 return -ENOMEM; 190 191 ops->stop = mt792xu_stop; 192 mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops); 193 if (!mdev) 194 return -ENOMEM; 195 196 dev = container_of(mdev, struct mt792x_dev, mt76); 197 dev->fw_features = features; 198 dev->hif_ops = &hif_ops; 199 200 udev = usb_get_dev(udev); 201 usb_reset_device(udev); 202 203 usb_set_intfdata(usb_intf, dev); 204 205 ret = __mt76u_init(mdev, usb_intf, &bus_ops); 206 if (ret < 0) 207 goto error; 208 209 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 210 (mt76_rr(dev, MT_HW_REV) & 0xff); 211 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 212 213 if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) { 214 ret = mt792xu_wfsys_reset(dev); 215 if (ret) 216 goto error; 217 } 218 219 ret = mt792xu_mcu_power_on(dev); 220 if (ret) 221 goto error; 222 223 ret = mt76u_alloc_mcu_queue(&dev->mt76); 224 if (ret) 225 goto error; 226 227 ret = mt76u_alloc_queues(&dev->mt76); 228 if (ret) 229 goto error; 230 231 ret = mt792xu_dma_init(dev, false); 232 if (ret) 233 goto error; 234 235 hw = mt76_hw(dev); 236 /* check hw sg support in order to enable AMSDU */ 237 hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1; 238 239 ret = mt7921_register_device(dev); 240 if (ret) 241 goto error; 242 243 return 0; 244 245 error: 246 mt76u_queues_deinit(&dev->mt76); 247 248 usb_set_intfdata(usb_intf, NULL); 249 usb_put_dev(interface_to_usbdev(usb_intf)); 250 251 mt76_free_device(&dev->mt76); 252 253 return ret; 254 } 255 256 #ifdef CONFIG_PM 257 static int mt7921u_suspend(struct usb_interface *intf, pm_message_t state) 258 { 259 struct mt792x_dev *dev = usb_get_intfdata(intf); 260 struct mt76_connac_pm *pm = &dev->pm; 261 int err; 262 263 pm->suspended = true; 264 flush_work(&dev->reset_work); 265 266 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true, true); 267 if (err) 268 goto failed; 269 270 mt76u_stop_rx(&dev->mt76); 271 mt76u_stop_tx(&dev->mt76); 272 273 return 0; 274 275 failed: 276 pm->suspended = false; 277 278 if (err < 0) 279 mt792x_reset(&dev->mt76); 280 281 return err; 282 } 283 284 static int mt7921u_resume(struct usb_interface *intf) 285 { 286 struct mt792x_dev *dev = usb_get_intfdata(intf); 287 struct mt76_connac_pm *pm = &dev->pm; 288 bool reinit = true; 289 int err, i; 290 291 for (i = 0; i < 10; i++) { 292 u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT); 293 294 if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) { 295 reinit = false; 296 break; 297 } 298 if (val & MT_WF_SW_SER_DONE_SUSPEND) { 299 mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0); 300 break; 301 } 302 303 msleep(20); 304 } 305 306 if (reinit || mt792x_dma_need_reinit(dev)) { 307 err = mt792xu_dma_init(dev, true); 308 if (err) 309 goto failed; 310 } 311 312 err = mt76u_resume_rx(&dev->mt76); 313 if (err < 0) 314 goto failed; 315 316 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false, true); 317 failed: 318 pm->suspended = false; 319 320 if (err < 0) 321 mt792x_reset(&dev->mt76); 322 323 return err; 324 } 325 #endif /* CONFIG_PM */ 326 327 MODULE_DEVICE_TABLE(usb, mt7921u_device_table); 328 MODULE_FIRMWARE(MT7921_FIRMWARE_WM); 329 MODULE_FIRMWARE(MT7921_ROM_PATCH); 330 331 static struct usb_driver mt7921u_driver = { 332 .name = KBUILD_MODNAME, 333 .id_table = mt7921u_device_table, 334 .probe = mt7921u_probe, 335 .disconnect = mt792xu_disconnect, 336 #ifdef CONFIG_PM 337 .suspend = mt7921u_suspend, 338 .resume = mt7921u_resume, 339 .reset_resume = mt7921u_resume, 340 #endif /* CONFIG_PM */ 341 .soft_unbind = 1, 342 .disable_hub_initiated_lpm = 1, 343 }; 344 module_usb_driver(mt7921u_driver); 345 346 MODULE_DESCRIPTION("MediaTek MT7921U (USB) wireless driver"); 347 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); 348 MODULE_LICENSE("Dual BSD/GPL"); 349