1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* Copyright (C) 2023 MediaTek Inc. */ 3 4 #include <linux/kernel.h> 5 #include <linux/module.h> 6 #include <linux/usb.h> 7 8 #include "mt7925.h" 9 #include "mcu.h" 10 #include "mac.h" 11 12 static const struct usb_device_id mt7925u_device_table[] = { 13 { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x6639, 0xff, 0xff, 0xff), 14 .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM }, 15 { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7925, 0xff, 0xff, 0xff), 16 .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM }, 17 /* Netgear, Inc. A8500 */ 18 { USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9050, 0xff, 0xff, 0xff), 19 .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM }, 20 /* Netgear, Inc. A9000 */ 21 { USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9072, 0xff, 0xff, 0xff), 22 .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM }, 23 { }, 24 }; 25 26 static int 27 mt7925u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, 28 int cmd, int *seq) 29 { 30 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 31 u32 pad, ep; 32 int ret; 33 34 ret = mt7925_mcu_fill_message(mdev, skb, cmd, seq); 35 if (ret) 36 return ret; 37 38 mdev->mcu.timeout = 3 * HZ; 39 40 if (cmd != MCU_CMD(FW_SCATTER)) 41 ep = MT_EP_OUT_INBAND_CMD; 42 else 43 ep = MT_EP_OUT_AC_BE; 44 45 mt792x_skb_add_usb_sdio_hdr(dev, skb, 0); 46 pad = round_up(skb->len, 4) + 4 - skb->len; 47 __skb_put_zero(skb, pad); 48 49 ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL, 50 1000, ep); 51 dev_kfree_skb(skb); 52 53 return ret; 54 } 55 56 static int mt7925u_mcu_init(struct mt792x_dev *dev) 57 { 58 static const struct mt76_mcu_ops mcu_ops = { 59 .headroom = MT_SDIO_HDR_SIZE + 60 sizeof(struct mt76_connac2_mcu_txd), 61 .tailroom = MT_USB_TAIL_SIZE, 62 .mcu_skb_send_msg = mt7925u_mcu_send_message, 63 .mcu_parse_response = mt7925_mcu_parse_response, 64 }; 65 int ret; 66 67 dev->mt76.mcu_ops = &mcu_ops; 68 69 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 70 ret = mt7925_run_firmware(dev); 71 if (ret) 72 return ret; 73 74 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); 75 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 76 77 return 0; 78 } 79 80 static int mt7925u_mac_reset(struct mt792x_dev *dev) 81 { 82 int err; 83 84 if (atomic_read(&dev->mt76.bus_hung)) 85 return 0; 86 87 mt792xu_reset_on_bus_error(dev); 88 if (atomic_read(&dev->mt76.bus_hung)) 89 return 0; 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 = mt7925_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 = mt7925_mcu_set_eeprom(dev); 128 if (err) 129 goto out; 130 131 err = mt7925_mac_init(dev); 132 if (err) 133 goto out; 134 135 if (is_mt7927(&dev->mt76)) { 136 err = mt7925_mcu_set_dbdc(&dev->mphy, true); 137 if (err) 138 goto out; 139 } 140 141 err = __mt7925_start(&dev->phy); 142 out: 143 clear_bit(MT76_RESET, &dev->mphy.state); 144 145 mt76_worker_enable(&dev->mt76.tx_worker); 146 147 return err; 148 } 149 150 static int mt7925u_probe(struct usb_interface *usb_intf, 151 const struct usb_device_id *id) 152 { 153 static const struct mt76_driver_ops drv_ops = { 154 .txwi_size = MT_SDIO_TXD_SIZE, 155 .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ | 156 MT_DRV_AMSDU_OFFLOAD, 157 .survey_flags = SURVEY_INFO_TIME_TX | 158 SURVEY_INFO_TIME_RX | 159 SURVEY_INFO_TIME_BSS_RX, 160 .tx_prepare_skb = mt7925_usb_sdio_tx_prepare_skb, 161 .tx_complete_skb = mt7925_usb_sdio_tx_complete_skb, 162 .tx_status_data = mt7925_usb_sdio_tx_status_data, 163 .rx_skb = mt7925_queue_rx_skb, 164 .rx_check = mt7925_rx_check, 165 .sta_add = mt7925_mac_sta_add, 166 .sta_event = mt7925_mac_sta_event, 167 .sta_remove = mt7925_mac_sta_remove, 168 .update_survey = mt792x_update_channel, 169 }; 170 static const struct mt792x_hif_ops hif_ops = { 171 .mcu_init = mt7925u_mcu_init, 172 .init_reset = mt792xu_init_reset, 173 .reset = mt7925u_mac_reset, 174 }; 175 static struct mt76_bus_ops bus_ops = { 176 .rr = mt792xu_rr, 177 .wr = mt792xu_wr, 178 .rmw = mt792xu_rmw, 179 .read_copy = mt76u_read_copy, 180 .write_copy = mt792xu_copy, 181 .type = MT76_BUS_USB, 182 }; 183 struct usb_device *udev = interface_to_usbdev(usb_intf); 184 struct ieee80211_ops *ops; 185 struct ieee80211_hw *hw; 186 struct mt792x_dev *dev; 187 struct mt76_dev *mdev; 188 u8 features; 189 int ret; 190 191 ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7925_ops, 192 (void *)id->driver_info, &features); 193 if (!ops) 194 return -ENOMEM; 195 196 ops->stop = mt792xu_stop; 197 198 mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops); 199 if (!mdev) 200 return -ENOMEM; 201 202 dev = container_of(mdev, struct mt792x_dev, mt76); 203 dev->fw_features = features; 204 dev->hif_ops = &hif_ops; 205 mt792xu_reset_work_init(dev); 206 207 usb_reset_device(udev); 208 209 usb_set_intfdata(usb_intf, dev); 210 211 ret = __mt76u_init(mdev, usb_intf, &bus_ops); 212 if (ret < 0) 213 goto error; 214 215 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 216 (mt76_rr(dev, MT_HW_REV) & 0xff); 217 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 218 219 if (mt76_chip(mdev) == 0x6639) { 220 dev_dbg(mdev->dev, 221 "MT7927 raw CHIPID=0x%04x, forcing chip=0x7927\n", 222 mt76_chip(mdev)); 223 mdev->rev = (0x7927 << 16) | (mdev->rev & 0xff); 224 } 225 226 if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) { 227 ret = mt792xu_wfsys_reset(dev); 228 if (ret) 229 goto error; 230 } 231 232 ret = mt792xu_mcu_power_on(dev); 233 if (ret) 234 goto error; 235 236 ret = mt76u_alloc_mcu_queue(&dev->mt76); 237 if (ret) 238 goto error; 239 240 ret = mt76u_alloc_queues(&dev->mt76); 241 if (ret) 242 goto error; 243 244 ret = mt792xu_dma_init(dev, false); 245 if (ret) 246 goto error; 247 248 hw = mt76_hw(dev); 249 /* check hw sg support in order to enable AMSDU */ 250 hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1; 251 252 ret = mt7925_register_device(dev); 253 if (ret) 254 goto error; 255 256 return 0; 257 258 error: 259 mt76u_queues_deinit(&dev->mt76); 260 mt792xu_reset_work_cleanup(dev); 261 262 usb_set_intfdata(usb_intf, NULL); 263 264 mt76_free_device(&dev->mt76); 265 266 return ret; 267 } 268 269 #ifdef CONFIG_PM 270 static int mt7925u_suspend(struct usb_interface *intf, pm_message_t state) 271 { 272 struct mt792x_dev *dev = usb_get_intfdata(intf); 273 struct mt76_connac_pm *pm = &dev->pm; 274 int err, ret; 275 276 pm->suspended = true; 277 dev->hif_resumed = false; 278 flush_work(&dev->reset_work); 279 cancel_delayed_work_sync(&dev->mlo_pm_work); 280 281 mt76_connac_mcu_set_hif_suspend(&dev->mt76, true, false); 282 ret = wait_event_timeout(dev->wait, 283 dev->hif_idle, 3 * HZ); 284 if (!ret) { 285 err = -ETIMEDOUT; 286 goto failed; 287 } 288 289 mt76u_stop_rx(&dev->mt76); 290 mt76u_stop_tx(&dev->mt76); 291 292 return 0; 293 294 failed: 295 pm->suspended = false; 296 297 if (err < 0) 298 mt792x_reset(&dev->mt76); 299 300 return err; 301 } 302 303 static int mt7925u_resume(struct usb_interface *intf) 304 { 305 struct mt792x_dev *dev = usb_get_intfdata(intf); 306 struct mt76_connac_pm *pm = &dev->pm; 307 bool reinit = true; 308 int err, i, ret; 309 310 dev->hif_idle = false; 311 for (i = 0; i < 10; i++) { 312 u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT); 313 314 if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) { 315 reinit = false; 316 break; 317 } 318 if (val & MT_WF_SW_SER_DONE_SUSPEND) { 319 mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0); 320 break; 321 } 322 323 msleep(20); 324 } 325 326 if (reinit || mt792x_dma_need_reinit(dev)) { 327 err = mt792xu_dma_init(dev, true); 328 if (err) 329 goto failed; 330 } 331 332 err = mt76u_resume_rx(&dev->mt76); 333 if (err < 0) 334 goto failed; 335 336 mt76_connac_mcu_set_hif_suspend(&dev->mt76, false, false); 337 ret = wait_event_timeout(dev->wait, 338 dev->hif_resumed, 3 * HZ); 339 if (!ret) 340 err = -ETIMEDOUT; 341 failed: 342 pm->suspended = false; 343 344 if (err < 0) 345 mt792x_reset(&dev->mt76); 346 347 return err; 348 } 349 #endif /* CONFIG_PM */ 350 351 MODULE_DEVICE_TABLE(usb, mt7925u_device_table); 352 MODULE_FIRMWARE(MT7925_FIRMWARE_WM); 353 MODULE_FIRMWARE(MT7925_ROM_PATCH); 354 355 static struct usb_driver mt7925u_driver = { 356 .name = KBUILD_MODNAME, 357 .id_table = mt7925u_device_table, 358 .probe = mt7925u_probe, 359 .disconnect = mt792xu_disconnect, 360 #ifdef CONFIG_PM 361 .suspend = mt7925u_suspend, 362 .resume = mt7925u_resume, 363 .reset_resume = mt7925u_resume, 364 #endif /* CONFIG_PM */ 365 .soft_unbind = 1, 366 .disable_hub_initiated_lpm = 1, 367 }; 368 module_usb_driver(mt7925u_driver); 369 370 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); 371 MODULE_DESCRIPTION("MediaTek MT7925U (USB) wireless driver"); 372 MODULE_LICENSE("Dual BSD/GPL"); 373