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