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