1 // SPDX-License-Identifier: ISC 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, 0x7925, 0xff, 0xff, 0xff), 14 .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM }, 15 /* Netgear, Inc. A9000 */ 16 { USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9072, 0xff, 0xff, 0xff), 17 .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM }, 18 { }, 19 }; 20 21 static int 22 mt7925u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, 23 int cmd, int *seq) 24 { 25 struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76); 26 u32 pad, ep; 27 int ret; 28 29 ret = mt7925_mcu_fill_message(mdev, skb, cmd, seq); 30 if (ret) 31 return ret; 32 33 mdev->mcu.timeout = 3 * HZ; 34 35 if (cmd != MCU_CMD(FW_SCATTER)) 36 ep = MT_EP_OUT_INBAND_CMD; 37 else 38 ep = MT_EP_OUT_AC_BE; 39 40 mt792x_skb_add_usb_sdio_hdr(dev, skb, 0); 41 pad = round_up(skb->len, 4) + 4 - skb->len; 42 __skb_put_zero(skb, pad); 43 44 ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL, 45 1000, ep); 46 dev_kfree_skb(skb); 47 48 return ret; 49 } 50 51 static int mt7925u_mcu_init(struct mt792x_dev *dev) 52 { 53 static const struct mt76_mcu_ops mcu_ops = { 54 .headroom = MT_SDIO_HDR_SIZE + 55 sizeof(struct mt76_connac2_mcu_txd), 56 .tailroom = MT_USB_TAIL_SIZE, 57 .mcu_skb_send_msg = mt7925u_mcu_send_message, 58 .mcu_parse_response = mt7925_mcu_parse_response, 59 }; 60 int ret; 61 62 dev->mt76.mcu_ops = &mcu_ops; 63 64 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 65 ret = mt7925_run_firmware(dev); 66 if (ret) 67 return ret; 68 69 set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); 70 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 71 72 return 0; 73 } 74 75 static int mt7925u_mac_reset(struct mt792x_dev *dev) 76 { 77 int err; 78 79 mt76_txq_schedule_all(&dev->mphy); 80 mt76_worker_disable(&dev->mt76.tx_worker); 81 82 set_bit(MT76_RESET, &dev->mphy.state); 83 set_bit(MT76_MCU_RESET, &dev->mphy.state); 84 85 wake_up(&dev->mt76.mcu.wait); 86 skb_queue_purge(&dev->mt76.mcu.res_q); 87 88 mt76u_stop_rx(&dev->mt76); 89 mt76u_stop_tx(&dev->mt76); 90 91 mt792xu_wfsys_reset(dev); 92 93 clear_bit(MT76_MCU_RESET, &dev->mphy.state); 94 err = mt76u_resume_rx(&dev->mt76); 95 if (err) 96 goto out; 97 98 err = mt792xu_mcu_power_on(dev); 99 if (err) 100 goto out; 101 102 err = mt792xu_dma_init(dev, false); 103 if (err) 104 goto out; 105 106 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 107 mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 108 109 err = mt7925_run_firmware(dev); 110 if (err) 111 goto out; 112 113 mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN); 114 115 err = mt7925_mcu_set_eeprom(dev); 116 if (err) 117 goto out; 118 119 err = mt7925_mac_init(dev); 120 if (err) 121 goto out; 122 123 err = __mt7925_start(&dev->phy); 124 out: 125 clear_bit(MT76_RESET, &dev->mphy.state); 126 127 mt76_worker_enable(&dev->mt76.tx_worker); 128 129 return err; 130 } 131 132 static int mt7925u_probe(struct usb_interface *usb_intf, 133 const struct usb_device_id *id) 134 { 135 static const struct mt76_driver_ops drv_ops = { 136 .txwi_size = MT_SDIO_TXD_SIZE, 137 .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ | 138 MT_DRV_AMSDU_OFFLOAD, 139 .survey_flags = SURVEY_INFO_TIME_TX | 140 SURVEY_INFO_TIME_RX | 141 SURVEY_INFO_TIME_BSS_RX, 142 .tx_prepare_skb = mt7925_usb_sdio_tx_prepare_skb, 143 .tx_complete_skb = mt7925_usb_sdio_tx_complete_skb, 144 .tx_status_data = mt7925_usb_sdio_tx_status_data, 145 .rx_skb = mt7925_queue_rx_skb, 146 .rx_check = mt7925_rx_check, 147 .sta_add = mt7925_mac_sta_add, 148 .sta_event = mt7925_mac_sta_event, 149 .sta_remove = mt7925_mac_sta_remove, 150 .update_survey = mt792x_update_channel, 151 }; 152 static const struct mt792x_hif_ops hif_ops = { 153 .mcu_init = mt7925u_mcu_init, 154 .init_reset = mt792xu_init_reset, 155 .reset = mt7925u_mac_reset, 156 }; 157 static struct mt76_bus_ops bus_ops = { 158 .rr = mt792xu_rr, 159 .wr = mt792xu_wr, 160 .rmw = mt792xu_rmw, 161 .read_copy = mt76u_read_copy, 162 .write_copy = mt792xu_copy, 163 .type = MT76_BUS_USB, 164 }; 165 struct usb_device *udev = interface_to_usbdev(usb_intf); 166 struct ieee80211_ops *ops; 167 struct ieee80211_hw *hw; 168 struct mt792x_dev *dev; 169 struct mt76_dev *mdev; 170 u8 features; 171 int ret; 172 173 ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7925_ops, 174 (void *)id->driver_info, &features); 175 if (!ops) 176 return -ENOMEM; 177 178 ops->stop = mt792xu_stop; 179 180 mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops); 181 if (!mdev) 182 return -ENOMEM; 183 184 dev = container_of(mdev, struct mt792x_dev, mt76); 185 dev->fw_features = features; 186 dev->hif_ops = &hif_ops; 187 188 udev = usb_get_dev(udev); 189 usb_reset_device(udev); 190 191 usb_set_intfdata(usb_intf, dev); 192 193 ret = __mt76u_init(mdev, usb_intf, &bus_ops); 194 if (ret < 0) 195 goto error; 196 197 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 198 (mt76_rr(dev, MT_HW_REV) & 0xff); 199 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 200 201 if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) { 202 ret = mt792xu_wfsys_reset(dev); 203 if (ret) 204 goto error; 205 } 206 207 ret = mt792xu_mcu_power_on(dev); 208 if (ret) 209 goto error; 210 211 ret = mt76u_alloc_mcu_queue(&dev->mt76); 212 if (ret) 213 goto error; 214 215 ret = mt76u_alloc_queues(&dev->mt76); 216 if (ret) 217 goto error; 218 219 ret = mt792xu_dma_init(dev, false); 220 if (ret) 221 goto error; 222 223 hw = mt76_hw(dev); 224 /* check hw sg support in order to enable AMSDU */ 225 hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1; 226 227 ret = mt7925_register_device(dev); 228 if (ret) 229 goto error; 230 231 return 0; 232 233 error: 234 mt76u_queues_deinit(&dev->mt76); 235 236 usb_set_intfdata(usb_intf, NULL); 237 usb_put_dev(interface_to_usbdev(usb_intf)); 238 239 mt76_free_device(&dev->mt76); 240 241 return ret; 242 } 243 244 #ifdef CONFIG_PM 245 static int mt7925u_suspend(struct usb_interface *intf, pm_message_t state) 246 { 247 struct mt792x_dev *dev = usb_get_intfdata(intf); 248 struct mt76_connac_pm *pm = &dev->pm; 249 int err, ret; 250 251 pm->suspended = true; 252 dev->hif_resumed = false; 253 flush_work(&dev->reset_work); 254 255 mt76_connac_mcu_set_hif_suspend(&dev->mt76, true, false); 256 ret = wait_event_timeout(dev->wait, 257 dev->hif_idle, 3 * HZ); 258 if (!ret) { 259 err = -ETIMEDOUT; 260 goto failed; 261 } 262 263 mt76u_stop_rx(&dev->mt76); 264 mt76u_stop_tx(&dev->mt76); 265 266 return 0; 267 268 failed: 269 pm->suspended = false; 270 271 if (err < 0) 272 mt792x_reset(&dev->mt76); 273 274 return err; 275 } 276 277 static int mt7925u_resume(struct usb_interface *intf) 278 { 279 struct mt792x_dev *dev = usb_get_intfdata(intf); 280 struct mt76_connac_pm *pm = &dev->pm; 281 bool reinit = true; 282 int err, i, ret; 283 284 dev->hif_idle = false; 285 for (i = 0; i < 10; i++) { 286 u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT); 287 288 if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) { 289 reinit = false; 290 break; 291 } 292 if (val & MT_WF_SW_SER_DONE_SUSPEND) { 293 mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0); 294 break; 295 } 296 297 msleep(20); 298 } 299 300 if (reinit || mt792x_dma_need_reinit(dev)) { 301 err = mt792xu_dma_init(dev, true); 302 if (err) 303 goto failed; 304 } 305 306 err = mt76u_resume_rx(&dev->mt76); 307 if (err < 0) 308 goto failed; 309 310 mt76_connac_mcu_set_hif_suspend(&dev->mt76, false, false); 311 ret = wait_event_timeout(dev->wait, 312 dev->hif_resumed, 3 * HZ); 313 if (!ret) 314 err = -ETIMEDOUT; 315 failed: 316 pm->suspended = false; 317 318 if (err < 0) 319 mt792x_reset(&dev->mt76); 320 321 return err; 322 } 323 #endif /* CONFIG_PM */ 324 325 MODULE_DEVICE_TABLE(usb, mt7925u_device_table); 326 MODULE_FIRMWARE(MT7925_FIRMWARE_WM); 327 MODULE_FIRMWARE(MT7925_ROM_PATCH); 328 329 static struct usb_driver mt7925u_driver = { 330 .name = KBUILD_MODNAME, 331 .id_table = mt7925u_device_table, 332 .probe = mt7925u_probe, 333 .disconnect = mt792xu_disconnect, 334 #ifdef CONFIG_PM 335 .suspend = mt7925u_suspend, 336 .resume = mt7925u_resume, 337 .reset_resume = mt7925u_resume, 338 #endif /* CONFIG_PM */ 339 .soft_unbind = 1, 340 .disable_hub_initiated_lpm = 1, 341 }; 342 module_usb_driver(mt7925u_driver); 343 344 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); 345 MODULE_DESCRIPTION("MediaTek MT7925U (USB) wireless driver"); 346 MODULE_LICENSE("Dual BSD/GPL"); 347