1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2021 MediaTek Inc. 3 * 4 */ 5 #include <linux/module.h> 6 #include <linux/firmware.h> 7 #include <linux/usb.h> 8 #include <linux/iopoll.h> 9 #include <linux/unaligned.h> 10 11 #include <net/bluetooth/bluetooth.h> 12 #include <net/bluetooth/hci_core.h> 13 14 #include "btmtk.h" 15 16 #define VERSION "0.1" 17 18 /* It is for mt79xx download rom patch*/ 19 #define MTK_FW_ROM_PATCH_HEADER_SIZE 32 20 #define MTK_FW_ROM_PATCH_GD_SIZE 64 21 #define MTK_FW_ROM_PATCH_SEC_MAP_SIZE 64 22 #define MTK_SEC_MAP_COMMON_SIZE 12 23 #define MTK_SEC_MAP_NEED_SEND_SIZE 52 24 25 /* It is for mt79xx iso data transmission setting */ 26 #define MTK_ISO_THRESHOLD 264 27 28 struct btmtk_patch_header { 29 u8 datetime[16]; 30 u8 platform[4]; 31 __le16 hwver; 32 __le16 swver; 33 __le32 magicnum; 34 } __packed; 35 36 struct btmtk_global_desc { 37 __le32 patch_ver; 38 __le32 sub_sys; 39 __le32 feature_opt; 40 __le32 section_num; 41 } __packed; 42 43 struct btmtk_section_map { 44 __le32 sectype; 45 __le32 secoffset; 46 __le32 secsize; 47 union { 48 __le32 u4SecSpec[13]; 49 struct { 50 __le32 dlAddr; 51 __le32 dlsize; 52 __le32 seckeyidx; 53 __le32 alignlen; 54 __le32 sectype; 55 __le32 dlmodecrctype; 56 __le32 crc; 57 __le32 reserved[6]; 58 } bin_info_spec; 59 }; 60 } __packed; 61 62 static void btmtk_coredump(struct hci_dev *hdev) 63 { 64 int err; 65 66 err = __hci_cmd_send(hdev, 0xfd5b, 0, NULL); 67 if (err < 0) 68 bt_dev_err(hdev, "Coredump failed (%d)", err); 69 } 70 71 static void btmtk_coredump_hdr(struct hci_dev *hdev, struct sk_buff *skb) 72 { 73 struct btmtk_data *data = hci_get_priv(hdev); 74 char buf[80]; 75 76 snprintf(buf, sizeof(buf), "Controller Name: 0x%X\n", 77 data->dev_id); 78 skb_put_data(skb, buf, strlen(buf)); 79 80 snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n", 81 data->cd_info.fw_version); 82 skb_put_data(skb, buf, strlen(buf)); 83 84 snprintf(buf, sizeof(buf), "Driver: %s\n", 85 data->cd_info.driver_name); 86 skb_put_data(skb, buf, strlen(buf)); 87 88 snprintf(buf, sizeof(buf), "Vendor: MediaTek\n"); 89 skb_put_data(skb, buf, strlen(buf)); 90 } 91 92 static void btmtk_coredump_notify(struct hci_dev *hdev, int state) 93 { 94 struct btmtk_data *data = hci_get_priv(hdev); 95 96 switch (state) { 97 case HCI_DEVCOREDUMP_IDLE: 98 data->cd_info.state = HCI_DEVCOREDUMP_IDLE; 99 break; 100 case HCI_DEVCOREDUMP_ACTIVE: 101 data->cd_info.state = HCI_DEVCOREDUMP_ACTIVE; 102 break; 103 case HCI_DEVCOREDUMP_TIMEOUT: 104 case HCI_DEVCOREDUMP_ABORT: 105 case HCI_DEVCOREDUMP_DONE: 106 data->cd_info.state = HCI_DEVCOREDUMP_IDLE; 107 btmtk_reset_sync(hdev); 108 break; 109 } 110 } 111 112 void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id, u32 fw_ver, 113 u32 fw_flavor) 114 { 115 if (dev_id == 0x6639) 116 snprintf(buf, size, 117 "mediatek/mt7927/BT_RAM_CODE_MT%04x_2_%x_hdr.bin", 118 dev_id & 0xffff, (fw_ver & 0xff) + 1); 119 else if (dev_id == 0x7925) 120 snprintf(buf, size, 121 "mediatek/mt%04x/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 122 dev_id & 0xffff, dev_id & 0xffff, (fw_ver & 0xff) + 1); 123 else if (dev_id == 0x7961 && fw_flavor) 124 snprintf(buf, size, 125 "mediatek/BT_RAM_CODE_MT%04x_1a_%x_hdr.bin", 126 dev_id & 0xffff, (fw_ver & 0xff) + 1); 127 else 128 snprintf(buf, size, 129 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 130 dev_id & 0xffff, (fw_ver & 0xff) + 1); 131 } 132 EXPORT_SYMBOL_GPL(btmtk_fw_get_filename); 133 134 int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname, 135 wmt_cmd_sync_func_t wmt_cmd_sync, 136 u32 dev_id) 137 { 138 struct btmtk_hci_wmt_params wmt_params; 139 struct btmtk_patch_header *hdr; 140 struct btmtk_global_desc *globaldesc = NULL; 141 struct btmtk_section_map *sectionmap; 142 const struct firmware *fw; 143 const u8 *fw_ptr; 144 const u8 *fw_bin_ptr; 145 int err, dlen, i, status; 146 u8 flag, first_block, retry; 147 u32 section_num, dl_size, section_offset; 148 u8 cmd[64]; 149 150 err = request_firmware(&fw, fwname, &hdev->dev); 151 if (err < 0) { 152 bt_dev_err(hdev, "Failed to load firmware file (%d)", err); 153 return err; 154 } 155 156 fw_ptr = fw->data; 157 fw_bin_ptr = fw_ptr; 158 hdr = (struct btmtk_patch_header *)fw_ptr; 159 globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE); 160 section_num = le32_to_cpu(globaldesc->section_num); 161 162 bt_dev_info(hdev, "HW/SW Version: 0x%04x%04x, Build Time: %s", 163 le16_to_cpu(hdr->hwver), le16_to_cpu(hdr->swver), hdr->datetime); 164 165 for (i = 0; i < section_num; i++) { 166 first_block = 1; 167 fw_ptr = fw_bin_ptr; 168 sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE + 169 MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i); 170 171 section_offset = le32_to_cpu(sectionmap->secoffset); 172 dl_size = le32_to_cpu(sectionmap->bin_info_spec.dlsize); 173 174 /* MT6639: only download sections where dlmode byte0 == 0x01, 175 * matching the Windows driver behavior which skips WiFi/other 176 * sections that would cause the chip to hang. 177 */ 178 if (dev_id == 0x6639 && dl_size > 0 && 179 (le32_to_cpu(sectionmap->bin_info_spec.dlmodecrctype) & 0xff) != 0x01) 180 continue; 181 182 if (dl_size > 0) { 183 retry = 20; 184 while (retry > 0) { 185 cmd[0] = 0; /* 0 means legacy dl mode. */ 186 memcpy(cmd + 1, 187 fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE + 188 MTK_FW_ROM_PATCH_GD_SIZE + 189 MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i + 190 MTK_SEC_MAP_COMMON_SIZE, 191 MTK_SEC_MAP_NEED_SEND_SIZE + 1); 192 193 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 194 wmt_params.status = &status; 195 wmt_params.flag = 0; 196 wmt_params.dlen = MTK_SEC_MAP_NEED_SEND_SIZE + 1; 197 wmt_params.data = &cmd; 198 199 err = wmt_cmd_sync(hdev, &wmt_params); 200 if (err < 0) { 201 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 202 err); 203 goto err_release_fw; 204 } 205 206 if (status == BTMTK_WMT_PATCH_UNDONE) { 207 break; 208 } else if (status == BTMTK_WMT_PATCH_PROGRESS) { 209 msleep(100); 210 retry--; 211 } else if (status == BTMTK_WMT_PATCH_DONE) { 212 goto next_section; 213 } else { 214 bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)", 215 status); 216 err = -EIO; 217 goto err_release_fw; 218 } 219 } 220 221 /* If retry exhausted goto err_release_fw */ 222 if (retry == 0) { 223 err = -EIO; 224 goto err_release_fw; 225 } 226 227 fw_ptr += section_offset; 228 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 229 230 while (dl_size > 0) { 231 dlen = min_t(int, 250, dl_size); 232 if (first_block == 1) { 233 flag = 1; 234 first_block = 0; 235 } else if (dl_size - dlen <= 0) { 236 flag = 3; 237 } else { 238 flag = 2; 239 } 240 241 wmt_params.flag = flag; 242 wmt_params.dlen = dlen; 243 wmt_params.data = fw_ptr; 244 245 err = wmt_cmd_sync(hdev, &wmt_params); 246 /* Status BTMTK_WMT_PATCH_PROGRESS indicates firmware is 247 * in process of being downloaded, which is not expected to 248 * occur here. 249 */ 250 if (status == BTMTK_WMT_PATCH_PROGRESS) { 251 err = -EIO; 252 goto err_release_fw; 253 } else if (err < 0) { 254 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 255 err); 256 goto err_release_fw; 257 } 258 259 dl_size -= dlen; 260 fw_ptr += dlen; 261 } 262 } 263 next_section: 264 continue; 265 } 266 /* Wait a few moments for firmware activation done */ 267 usleep_range(100000, 120000); 268 269 err_release_fw: 270 release_firmware(fw); 271 272 return err; 273 } 274 EXPORT_SYMBOL_GPL(btmtk_setup_firmware_79xx); 275 276 int btmtk_setup_firmware(struct hci_dev *hdev, const char *fwname, 277 wmt_cmd_sync_func_t wmt_cmd_sync) 278 { 279 struct btmtk_hci_wmt_params wmt_params; 280 const struct firmware *fw; 281 const u8 *fw_ptr; 282 size_t fw_size; 283 int err, dlen; 284 u8 flag, param; 285 286 err = request_firmware(&fw, fwname, &hdev->dev); 287 if (err < 0) { 288 bt_dev_err(hdev, "Failed to load firmware file (%d)", err); 289 return err; 290 } 291 292 /* Power on data RAM the firmware relies on. */ 293 param = 1; 294 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 295 wmt_params.flag = 3; 296 wmt_params.dlen = sizeof(param); 297 wmt_params.data = ¶m; 298 wmt_params.status = NULL; 299 300 err = wmt_cmd_sync(hdev, &wmt_params); 301 if (err < 0) { 302 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err); 303 goto err_release_fw; 304 } 305 306 fw_ptr = fw->data; 307 fw_size = fw->size; 308 309 /* The size of patch header is 30 bytes, should be skip */ 310 if (fw_size < 30) { 311 err = -EINVAL; 312 goto err_release_fw; 313 } 314 315 fw_size -= 30; 316 fw_ptr += 30; 317 flag = 1; 318 319 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 320 wmt_params.status = NULL; 321 322 while (fw_size > 0) { 323 dlen = min_t(int, 250, fw_size); 324 325 /* Tell device the position in sequence */ 326 if (fw_size - dlen <= 0) 327 flag = 3; 328 else if (fw_size < fw->size - 30) 329 flag = 2; 330 331 wmt_params.flag = flag; 332 wmt_params.dlen = dlen; 333 wmt_params.data = fw_ptr; 334 335 err = wmt_cmd_sync(hdev, &wmt_params); 336 if (err < 0) { 337 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 338 err); 339 goto err_release_fw; 340 } 341 342 fw_size -= dlen; 343 fw_ptr += dlen; 344 } 345 346 wmt_params.op = BTMTK_WMT_RST; 347 wmt_params.flag = 4; 348 wmt_params.dlen = 0; 349 wmt_params.data = NULL; 350 wmt_params.status = NULL; 351 352 /* Activate function the firmware providing to */ 353 err = wmt_cmd_sync(hdev, &wmt_params); 354 if (err < 0) { 355 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err); 356 goto err_release_fw; 357 } 358 359 /* Wait a few moments for firmware activation done */ 360 usleep_range(10000, 12000); 361 362 err_release_fw: 363 release_firmware(fw); 364 365 return err; 366 } 367 EXPORT_SYMBOL_GPL(btmtk_setup_firmware); 368 369 int btmtk_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 370 { 371 struct sk_buff *skb; 372 long ret; 373 374 skb = __hci_cmd_sync(hdev, 0xfc1a, 6, bdaddr, HCI_INIT_TIMEOUT); 375 if (IS_ERR(skb)) { 376 ret = PTR_ERR(skb); 377 bt_dev_err(hdev, "changing Mediatek device address failed (%ld)", 378 ret); 379 return ret; 380 } 381 kfree_skb(skb); 382 383 return 0; 384 } 385 EXPORT_SYMBOL_GPL(btmtk_set_bdaddr); 386 387 void btmtk_reset_sync(struct hci_dev *hdev) 388 { 389 struct btmtk_data *reset_work = hci_get_priv(hdev); 390 int err; 391 392 hci_dev_lock(hdev); 393 394 err = hci_cmd_sync_queue(hdev, reset_work->reset_sync, NULL, NULL); 395 if (err) 396 bt_dev_err(hdev, "failed to reset (%d)", err); 397 398 hci_dev_unlock(hdev); 399 } 400 EXPORT_SYMBOL_GPL(btmtk_reset_sync); 401 402 int btmtk_register_coredump(struct hci_dev *hdev, const char *name, 403 u32 fw_version) 404 { 405 struct btmtk_data *data = hci_get_priv(hdev); 406 407 if (!IS_ENABLED(CONFIG_DEV_COREDUMP)) 408 return -EOPNOTSUPP; 409 410 data->cd_info.fw_version = fw_version; 411 data->cd_info.state = HCI_DEVCOREDUMP_IDLE; 412 data->cd_info.driver_name = name; 413 414 return hci_devcd_register(hdev, btmtk_coredump, btmtk_coredump_hdr, 415 btmtk_coredump_notify); 416 } 417 EXPORT_SYMBOL_GPL(btmtk_register_coredump); 418 419 int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb) 420 { 421 struct btmtk_data *data = hci_get_priv(hdev); 422 int err; 423 bool complete = false; 424 425 if (!IS_ENABLED(CONFIG_DEV_COREDUMP)) { 426 kfree_skb(skb); 427 return 0; 428 } 429 430 switch (data->cd_info.state) { 431 case HCI_DEVCOREDUMP_IDLE: 432 err = hci_devcd_init(hdev, MTK_COREDUMP_SIZE); 433 if (err < 0) { 434 kfree_skb(skb); 435 break; 436 } 437 data->cd_info.cnt = 0; 438 439 /* It is supposed coredump can be done within 5 seconds */ 440 schedule_delayed_work(&hdev->dump.dump_timeout, 441 msecs_to_jiffies(5000)); 442 fallthrough; 443 case HCI_DEVCOREDUMP_ACTIVE: 444 default: 445 /* Mediatek coredump data would be more than MTK_COREDUMP_NUM */ 446 if (data->cd_info.cnt >= MTK_COREDUMP_NUM && 447 skb->len > MTK_COREDUMP_END_LEN) 448 if (!memcmp((char *)&skb->data[skb->len - MTK_COREDUMP_END_LEN], 449 MTK_COREDUMP_END, MTK_COREDUMP_END_LEN - 1)) 450 complete = true; 451 452 err = hci_devcd_append(hdev, skb); 453 if (err < 0) 454 break; 455 data->cd_info.cnt++; 456 457 if (complete) { 458 bt_dev_info(hdev, "Mediatek coredump end"); 459 hci_devcd_complete(hdev); 460 } 461 462 break; 463 } 464 465 return err; 466 } 467 EXPORT_SYMBOL_GPL(btmtk_process_coredump); 468 469 #if IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) 470 /* Known MT6639 (MT7927) Bluetooth USB devices. 471 * Used to scope the zero-CHIPID workaround to real MT6639 hardware, 472 * since some boards return 0x0000 from the MMIO chip ID register. 473 */ 474 static const struct { 475 u16 vendor; 476 u16 product; 477 } btmtk_mt6639_devs[] = { 478 { 0x0489, 0xe13a }, /* ASUS ROG Crosshair X870E Hero */ 479 { 0x0489, 0xe0fa }, /* Lenovo Legion Pro 7 16ARX9 */ 480 { 0x0489, 0xe10f }, /* Gigabyte Z790 AORUS MASTER X */ 481 { 0x0489, 0xe110 }, /* MSI X870E Ace Max */ 482 { 0x0489, 0xe116 }, /* TP-Link Archer TBE550E */ 483 { 0x13d3, 0x3588 }, /* ASUS ROG STRIX X870E-E */ 484 }; 485 486 static void btmtk_usb_wmt_recv(struct urb *urb) 487 { 488 struct hci_dev *hdev = urb->context; 489 struct btmtk_data *data = hci_get_priv(hdev); 490 struct sk_buff *skb; 491 int err; 492 493 if (urb->status == 0 && urb->actual_length > 0) { 494 hdev->stat.byte_rx += urb->actual_length; 495 496 /* WMT event shouldn't be fragmented and the size should be 497 * less than HCI_WMT_MAX_EVENT_SIZE. 498 */ 499 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 500 if (!skb) { 501 hdev->stat.err_rx++; 502 kfree(urb->setup_packet); 503 return; 504 } 505 506 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 507 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 508 509 /* When someone waits for the WMT event, the skb is being cloned 510 * and being processed the events from there then. 511 */ 512 if (test_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags)) { 513 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 514 if (!data->evt_skb) { 515 kfree_skb(skb); 516 kfree(urb->setup_packet); 517 return; 518 } 519 } 520 521 err = hci_recv_frame(hdev, skb); 522 if (err < 0) { 523 kfree_skb(data->evt_skb); 524 data->evt_skb = NULL; 525 kfree(urb->setup_packet); 526 return; 527 } 528 529 if (test_and_clear_bit(BTMTK_TX_WAIT_VND_EVT, 530 &data->flags)) { 531 /* Barrier to sync with other CPUs */ 532 smp_mb__after_atomic(); 533 wake_up_bit(&data->flags, 534 BTMTK_TX_WAIT_VND_EVT); 535 } 536 kfree(urb->setup_packet); 537 return; 538 } else if (urb->status == -ENOENT) { 539 /* Avoid suspend failed when usb_kill_urb */ 540 return; 541 } 542 543 usb_mark_last_busy(data->udev); 544 545 /* The URB complete handler is still called with urb->actual_length = 0 546 * when the event is not available, so we should keep re-submitting 547 * URB until WMT event returns, Also, It's necessary to wait some time 548 * between the two consecutive control URBs to relax the target device 549 * to generate the event. Otherwise, the WMT event cannot return from 550 * the device successfully. 551 */ 552 udelay(500); 553 554 usb_anchor_urb(urb, data->ctrl_anchor); 555 err = usb_submit_urb(urb, GFP_ATOMIC); 556 if (err < 0) { 557 kfree(urb->setup_packet); 558 /* -EPERM: urb is being killed; 559 * -ENODEV: device got disconnected 560 */ 561 if (err != -EPERM && err != -ENODEV) 562 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 563 urb, -err); 564 usb_unanchor_urb(urb); 565 } 566 } 567 568 static int btmtk_usb_submit_wmt_recv_urb(struct hci_dev *hdev) 569 { 570 struct btmtk_data *data = hci_get_priv(hdev); 571 struct usb_ctrlrequest *dr; 572 unsigned char *buf; 573 int err, size = 64; 574 unsigned int pipe; 575 struct urb *urb; 576 577 urb = usb_alloc_urb(0, GFP_KERNEL); 578 if (!urb) 579 return -ENOMEM; 580 581 dr = kmalloc_obj(*dr); 582 if (!dr) { 583 usb_free_urb(urb); 584 return -ENOMEM; 585 } 586 587 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 588 dr->bRequest = 1; 589 dr->wIndex = cpu_to_le16(0); 590 dr->wValue = cpu_to_le16(48); 591 dr->wLength = cpu_to_le16(size); 592 593 buf = kmalloc(size, GFP_KERNEL); 594 if (!buf) { 595 kfree(dr); 596 usb_free_urb(urb); 597 return -ENOMEM; 598 } 599 600 pipe = usb_rcvctrlpipe(data->udev, 0); 601 602 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 603 buf, size, btmtk_usb_wmt_recv, hdev); 604 605 urb->transfer_flags |= URB_FREE_BUFFER; 606 607 usb_anchor_urb(urb, data->ctrl_anchor); 608 err = usb_submit_urb(urb, GFP_KERNEL); 609 if (err < 0) { 610 if (err != -EPERM && err != -ENODEV) 611 bt_dev_err(hdev, "urb %p submission failed (%d)", 612 urb, -err); 613 usb_unanchor_urb(urb); 614 } 615 616 usb_free_urb(urb); 617 618 return err; 619 } 620 621 static int btmtk_usb_hci_wmt_sync(struct hci_dev *hdev, 622 struct btmtk_hci_wmt_params *wmt_params) 623 { 624 struct btmtk_data *data = hci_get_priv(hdev); 625 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 626 u32 hlen, status = BTMTK_WMT_INVALID; 627 struct btmtk_hci_wmt_evt *wmt_evt; 628 struct btmtk_hci_wmt_cmd *wc; 629 struct btmtk_wmt_hdr *hdr; 630 int err; 631 632 /* Send the WMT command and wait until the WMT event returns */ 633 hlen = sizeof(*hdr) + wmt_params->dlen; 634 if (hlen > 255) 635 return -EINVAL; 636 637 wc = kzalloc(hlen, GFP_KERNEL); 638 if (!wc) 639 return -ENOMEM; 640 641 hdr = &wc->hdr; 642 hdr->dir = 1; 643 hdr->op = wmt_params->op; 644 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 645 hdr->flag = wmt_params->flag; 646 memcpy(wc->data, wmt_params->data, wmt_params->dlen); 647 648 set_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags); 649 650 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling, 651 * it needs constantly polling control pipe until the host received the 652 * WMT event, thus, we should require to specifically acquire PM counter 653 * on the USB to prevent the interface from entering auto suspended 654 * while WMT cmd/event in progress. 655 */ 656 err = usb_autopm_get_interface(data->intf); 657 if (err < 0) 658 goto err_free_wc; 659 660 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc); 661 662 if (err < 0) { 663 clear_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags); 664 usb_autopm_put_interface(data->intf); 665 goto err_free_wc; 666 } 667 668 /* Submit control IN URB on demand to process the WMT event */ 669 err = btmtk_usb_submit_wmt_recv_urb(hdev); 670 671 usb_autopm_put_interface(data->intf); 672 673 if (err < 0) 674 goto err_free_wc; 675 676 /* The vendor specific WMT commands are all answered by a vendor 677 * specific event and will have the Command Status or Command 678 * Complete as with usual HCI command flow control. 679 * 680 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 681 * state to be cleared. The driver specific event receive routine 682 * will clear that state and with that indicate completion of the 683 * WMT command. 684 */ 685 err = wait_on_bit_timeout(&data->flags, BTMTK_TX_WAIT_VND_EVT, 686 TASK_UNINTERRUPTIBLE, HCI_INIT_TIMEOUT); 687 688 if (err) { 689 bt_dev_err(hdev, "Execution of wmt command timed out"); 690 clear_bit(BTMTK_TX_WAIT_VND_EVT, &data->flags); 691 err = -ETIMEDOUT; 692 goto err_free_wc; 693 } 694 695 if (data->evt_skb == NULL) 696 goto err_free_wc; 697 698 /* Parse and handle the return WMT event */ 699 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 700 if (wmt_evt->whdr.op != hdr->op) { 701 bt_dev_err(hdev, "Wrong op received %d expected %d", 702 wmt_evt->whdr.op, hdr->op); 703 err = -EIO; 704 goto err_free_skb; 705 } 706 707 switch (wmt_evt->whdr.op) { 708 case BTMTK_WMT_SEMAPHORE: 709 if (wmt_evt->whdr.flag == 2) 710 status = BTMTK_WMT_PATCH_UNDONE; 711 else 712 status = BTMTK_WMT_PATCH_DONE; 713 break; 714 case BTMTK_WMT_FUNC_CTRL: 715 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 716 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 717 status = BTMTK_WMT_ON_DONE; 718 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 719 status = BTMTK_WMT_ON_PROGRESS; 720 else 721 status = BTMTK_WMT_ON_UNDONE; 722 break; 723 case BTMTK_WMT_PATCH_DWNLD: 724 if (wmt_evt->whdr.flag == 2) 725 status = BTMTK_WMT_PATCH_DONE; 726 else if (wmt_evt->whdr.flag == 1) 727 status = BTMTK_WMT_PATCH_PROGRESS; 728 else 729 status = BTMTK_WMT_PATCH_UNDONE; 730 break; 731 } 732 733 if (wmt_params->status) 734 *wmt_params->status = status; 735 736 err_free_skb: 737 kfree_skb(data->evt_skb); 738 data->evt_skb = NULL; 739 err_free_wc: 740 kfree(wc); 741 return err; 742 } 743 744 static int btmtk_usb_func_query(struct hci_dev *hdev) 745 { 746 struct btmtk_hci_wmt_params wmt_params; 747 int status, err; 748 u8 param = 0; 749 750 /* Query whether the function is enabled */ 751 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 752 wmt_params.flag = 4; 753 wmt_params.dlen = sizeof(param); 754 wmt_params.data = ¶m; 755 wmt_params.status = &status; 756 757 err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params); 758 if (err < 0) { 759 bt_dev_err(hdev, "Failed to query function status (%d)", err); 760 return err; 761 } 762 763 return status; 764 } 765 766 static int btmtk_usb_uhw_reg_write(struct hci_dev *hdev, u32 reg, u32 val) 767 { 768 struct btmtk_data *data = hci_get_priv(hdev); 769 int pipe, err; 770 void *buf; 771 772 buf = kzalloc(4, GFP_KERNEL); 773 if (!buf) 774 return -ENOMEM; 775 776 put_unaligned_le32(val, buf); 777 778 pipe = usb_sndctrlpipe(data->udev, 0); 779 err = usb_control_msg(data->udev, pipe, 0x02, 780 0x5E, 781 reg >> 16, reg & 0xffff, 782 buf, 4, USB_CTRL_SET_TIMEOUT); 783 if (err < 0) 784 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err); 785 786 kfree(buf); 787 788 return err; 789 } 790 791 static int btmtk_usb_uhw_reg_read(struct hci_dev *hdev, u32 reg, u32 *val) 792 { 793 struct btmtk_data *data = hci_get_priv(hdev); 794 int pipe, err; 795 void *buf; 796 797 buf = kzalloc(4, GFP_KERNEL); 798 if (!buf) 799 return -ENOMEM; 800 801 pipe = usb_rcvctrlpipe(data->udev, 0); 802 err = usb_control_msg(data->udev, pipe, 0x01, 803 0xDE, 804 reg >> 16, reg & 0xffff, 805 buf, 4, USB_CTRL_GET_TIMEOUT); 806 if (err < 0) { 807 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err); 808 goto err_free_buf; 809 } 810 811 *val = get_unaligned_le32(buf); 812 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val); 813 814 err_free_buf: 815 kfree(buf); 816 817 return err; 818 } 819 820 static int btmtk_usb_reg_read(struct hci_dev *hdev, u32 reg, u32 *val) 821 { 822 struct btmtk_data *data = hci_get_priv(hdev); 823 int pipe, err, size = sizeof(u32); 824 void *buf; 825 826 buf = kzalloc(size, GFP_KERNEL); 827 if (!buf) 828 return -ENOMEM; 829 830 pipe = usb_rcvctrlpipe(data->udev, 0); 831 err = usb_control_msg(data->udev, pipe, 0x63, 832 USB_TYPE_VENDOR | USB_DIR_IN, 833 reg >> 16, reg & 0xffff, 834 buf, size, USB_CTRL_GET_TIMEOUT); 835 if (err < 0) 836 goto err_free_buf; 837 838 *val = get_unaligned_le32(buf); 839 840 err_free_buf: 841 kfree(buf); 842 843 return err; 844 } 845 846 static int btmtk_usb_id_get(struct hci_dev *hdev, u32 reg, u32 *id) 847 { 848 return btmtk_usb_reg_read(hdev, reg, id); 849 } 850 851 static u32 btmtk_usb_reset_done(struct hci_dev *hdev) 852 { 853 u32 val = 0; 854 855 btmtk_usb_uhw_reg_read(hdev, MTK_BT_MISC, &val); 856 857 return val & MTK_BT_RST_DONE; 858 } 859 860 int btmtk_usb_subsys_reset(struct hci_dev *hdev, u32 dev_id) 861 { 862 u32 val; 863 int err; 864 865 if (dev_id == 0x7922) { 866 err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_SUBSYS_RST, &val); 867 if (err < 0) 868 return err; 869 val |= 0x00002020; 870 err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_SUBSYS_RST, val); 871 if (err < 0) 872 return err; 873 err = btmtk_usb_uhw_reg_write(hdev, MTK_EP_RST_OPT, 0x00010001); 874 if (err < 0) 875 return err; 876 err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_SUBSYS_RST, &val); 877 if (err < 0) 878 return err; 879 val |= BIT(0); 880 err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_SUBSYS_RST, val); 881 if (err < 0) 882 return err; 883 msleep(100); 884 } else if (dev_id == 0x7925 || dev_id == 0x6639) { 885 err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_RESET_REG_CONNV3, &val); 886 if (err < 0) 887 return err; 888 val |= (1 << 5); 889 err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_RESET_REG_CONNV3, val); 890 if (err < 0) 891 return err; 892 err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_RESET_REG_CONNV3, &val); 893 if (err < 0) 894 return err; 895 val &= 0xFFFF00FF; 896 val |= (1 << 13); 897 err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_RESET_REG_CONNV3, val); 898 if (err < 0) 899 return err; 900 err = btmtk_usb_uhw_reg_write(hdev, MTK_EP_RST_OPT, 0x00010001); 901 if (err < 0) 902 return err; 903 err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_RESET_REG_CONNV3, &val); 904 if (err < 0) 905 return err; 906 val |= (1 << 0); 907 err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_RESET_REG_CONNV3, val); 908 if (err < 0) 909 return err; 910 err = btmtk_usb_uhw_reg_write(hdev, MTK_UDMA_INT_STA_BT, 0x000000FF); 911 if (err < 0) 912 return err; 913 err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT, &val); 914 if (err < 0) 915 return err; 916 err = btmtk_usb_uhw_reg_write(hdev, MTK_UDMA_INT_STA_BT1, 0x000000FF); 917 if (err < 0) 918 return err; 919 err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT1, &val); 920 if (err < 0) 921 return err; 922 msleep(100); 923 } else { 924 /* It's Device EndPoint Reset Option Register */ 925 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw"); 926 err = btmtk_usb_uhw_reg_write(hdev, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 927 if (err < 0) 928 return err; 929 err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_WDT_STATUS, &val); 930 if (err < 0) 931 return err; 932 /* Reset the bluetooth chip via USB interface. */ 933 err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_SUBSYS_RST, 1); 934 if (err < 0) 935 return err; 936 err = btmtk_usb_uhw_reg_write(hdev, MTK_UDMA_INT_STA_BT, 0x000000FF); 937 if (err < 0) 938 return err; 939 err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT, &val); 940 if (err < 0) 941 return err; 942 err = btmtk_usb_uhw_reg_write(hdev, MTK_UDMA_INT_STA_BT1, 0x000000FF); 943 if (err < 0) 944 return err; 945 err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT1, &val); 946 if (err < 0) 947 return err; 948 /* MT7921 need to delay 20ms between toggle reset bit */ 949 msleep(20); 950 err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_SUBSYS_RST, 0); 951 if (err < 0) 952 return err; 953 err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_SUBSYS_RST, &val); 954 if (err < 0) 955 return err; 956 } 957 958 err = readx_poll_timeout(btmtk_usb_reset_done, hdev, val, 959 val & MTK_BT_RST_DONE, 20000, 1000000); 960 if (err < 0) 961 bt_dev_err(hdev, "Reset timeout"); 962 963 if (dev_id == 0x7922) { 964 err = btmtk_usb_uhw_reg_write(hdev, MTK_UDMA_INT_STA_BT, 0x000000FF); 965 if (err < 0) 966 return err; 967 } 968 969 err = btmtk_usb_id_get(hdev, 0x70010200, &val); 970 if (err < 0 || (!val && dev_id != 0x6639)) 971 bt_dev_err(hdev, "Can't get device id, subsys reset fail."); 972 973 return err; 974 } 975 EXPORT_SYMBOL_GPL(btmtk_usb_subsys_reset); 976 977 int btmtk_usb_recv_acl(struct hci_dev *hdev, struct sk_buff *skb) 978 { 979 struct btmtk_data *data = hci_get_priv(hdev); 980 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); 981 982 switch (handle) { 983 case 0xfc6f: /* Firmware dump from device */ 984 /* When the firmware hangs, the device can no longer 985 * suspend and thus disable auto-suspend. 986 */ 987 usb_disable_autosuspend(data->udev); 988 989 /* We need to forward the diagnostic packet to userspace daemon 990 * for backward compatibility, so we have to clone the packet 991 * extraly for the in-kernel coredump support. 992 */ 993 if (IS_ENABLED(CONFIG_DEV_COREDUMP)) { 994 struct sk_buff *skb_cd = skb_clone(skb, GFP_ATOMIC); 995 996 if (skb_cd) 997 btmtk_process_coredump(hdev, skb_cd); 998 } 999 1000 fallthrough; 1001 case 0x05ff: /* Firmware debug logging 1 */ 1002 case 0x05fe: /* Firmware debug logging 2 */ 1003 return hci_recv_diag(hdev, skb); 1004 } 1005 1006 return hci_recv_frame(hdev, skb); 1007 } 1008 EXPORT_SYMBOL_GPL(btmtk_usb_recv_acl); 1009 1010 static int btmtk_isopkt_pad(struct hci_dev *hdev, struct sk_buff *skb) 1011 { 1012 if (skb->len > MTK_ISO_THRESHOLD) 1013 return -EINVAL; 1014 1015 if (skb_pad(skb, MTK_ISO_THRESHOLD - skb->len)) 1016 return -ENOMEM; 1017 1018 __skb_put(skb, MTK_ISO_THRESHOLD - skb->len); 1019 1020 return 0; 1021 } 1022 1023 static int __set_mtk_intr_interface(struct hci_dev *hdev) 1024 { 1025 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1026 struct usb_interface *intf = btmtk_data->isopkt_intf; 1027 int err; 1028 1029 if (!btmtk_data->isopkt_intf) 1030 return -ENODEV; 1031 1032 err = usb_set_interface(btmtk_data->udev, MTK_ISO_IFNUM, 1033 (intf->num_altsetting > 1) ? 1 : 0); 1034 if (err < 0) { 1035 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1036 return err; 1037 } 1038 1039 err = usb_find_common_endpoints(intf->cur_altsetting, NULL, NULL, 1040 &btmtk_data->isopkt_rx_ep, 1041 &btmtk_data->isopkt_tx_ep); 1042 if (err) { 1043 bt_dev_err(hdev, "invalid interrupt descriptors"); 1044 return -ENODEV; 1045 } 1046 1047 return 0; 1048 } 1049 1050 struct urb *alloc_mtk_intr_urb(struct hci_dev *hdev, struct sk_buff *skb, 1051 usb_complete_t tx_complete) 1052 { 1053 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1054 struct urb *urb; 1055 unsigned int pipe; 1056 1057 if (!btmtk_data->isopkt_tx_ep) 1058 return ERR_PTR(-ENODEV); 1059 1060 urb = usb_alloc_urb(0, GFP_KERNEL); 1061 if (!urb) 1062 return ERR_PTR(-ENOMEM); 1063 1064 if (btmtk_isopkt_pad(hdev, skb)) 1065 return ERR_PTR(-EINVAL); 1066 1067 pipe = usb_sndintpipe(btmtk_data->udev, 1068 btmtk_data->isopkt_tx_ep->bEndpointAddress); 1069 1070 usb_fill_int_urb(urb, btmtk_data->udev, pipe, 1071 skb->data, skb->len, tx_complete, 1072 skb, btmtk_data->isopkt_tx_ep->bInterval); 1073 1074 skb->dev = (void *)hdev; 1075 1076 return urb; 1077 } 1078 EXPORT_SYMBOL_GPL(alloc_mtk_intr_urb); 1079 1080 static int btmtk_recv_isopkt(struct hci_dev *hdev, void *buffer, int count) 1081 { 1082 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1083 struct sk_buff *skb; 1084 unsigned long flags; 1085 int err = 0; 1086 1087 spin_lock_irqsave(&btmtk_data->isorxlock, flags); 1088 skb = btmtk_data->isopkt_skb; 1089 1090 while (count) { 1091 int len; 1092 1093 if (!skb) { 1094 skb = bt_skb_alloc(HCI_MAX_ISO_SIZE, GFP_ATOMIC); 1095 if (!skb) { 1096 err = -ENOMEM; 1097 break; 1098 } 1099 1100 hci_skb_pkt_type(skb) = HCI_ISODATA_PKT; 1101 hci_skb_expect(skb) = HCI_ISO_HDR_SIZE; 1102 } 1103 1104 len = min_t(uint, hci_skb_expect(skb), count); 1105 skb_put_data(skb, buffer, len); 1106 1107 count -= len; 1108 buffer += len; 1109 hci_skb_expect(skb) -= len; 1110 1111 if (skb->len == HCI_ISO_HDR_SIZE) { 1112 __le16 dlen = ((struct hci_iso_hdr *)skb->data)->dlen; 1113 1114 /* Complete ISO header */ 1115 hci_skb_expect(skb) = __le16_to_cpu(dlen); 1116 1117 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 1118 kfree_skb(skb); 1119 skb = NULL; 1120 1121 err = -EILSEQ; 1122 break; 1123 } 1124 } 1125 1126 if (!hci_skb_expect(skb)) { 1127 /* Complete frame */ 1128 hci_recv_frame(hdev, skb); 1129 skb = NULL; 1130 } 1131 } 1132 1133 btmtk_data->isopkt_skb = skb; 1134 spin_unlock_irqrestore(&btmtk_data->isorxlock, flags); 1135 1136 return err; 1137 } 1138 1139 static void btmtk_intr_complete(struct urb *urb) 1140 { 1141 struct hci_dev *hdev = urb->context; 1142 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1143 int err; 1144 1145 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1146 urb->actual_length); 1147 1148 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1149 return; 1150 1151 if (hdev->suspended) 1152 return; 1153 1154 if (urb->status == 0) { 1155 hdev->stat.byte_rx += urb->actual_length; 1156 1157 if (btmtk_recv_isopkt(hdev, urb->transfer_buffer, 1158 urb->actual_length) < 0) { 1159 bt_dev_err(hdev, "corrupted iso packet"); 1160 hdev->stat.err_rx++; 1161 } 1162 } else if (urb->status == -ENOENT) { 1163 /* Avoid suspend failed when usb_kill_urb */ 1164 return; 1165 } 1166 1167 usb_mark_last_busy(btmtk_data->udev); 1168 usb_anchor_urb(urb, &btmtk_data->isopkt_anchor); 1169 1170 err = usb_submit_urb(urb, GFP_ATOMIC); 1171 if (err < 0) { 1172 /* -EPERM: urb is being killed; 1173 * -ENODEV: device got disconnected 1174 */ 1175 if (err != -EPERM && err != -ENODEV) 1176 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1177 urb, -err); 1178 if (err != -EPERM) 1179 hci_cmd_sync_cancel(hdev, -err); 1180 usb_unanchor_urb(urb); 1181 } 1182 } 1183 1184 static int btmtk_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 1185 { 1186 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1187 unsigned char *buf; 1188 unsigned int pipe; 1189 struct urb *urb; 1190 int err, size; 1191 1192 BT_DBG("%s", hdev->name); 1193 1194 if (!btmtk_data->isopkt_rx_ep) 1195 return -ENODEV; 1196 1197 urb = usb_alloc_urb(0, mem_flags); 1198 if (!urb) 1199 return -ENOMEM; 1200 size = le16_to_cpu(btmtk_data->isopkt_rx_ep->wMaxPacketSize); 1201 1202 buf = kmalloc(size, mem_flags); 1203 if (!buf) { 1204 usb_free_urb(urb); 1205 return -ENOMEM; 1206 } 1207 1208 pipe = usb_rcvintpipe(btmtk_data->udev, 1209 btmtk_data->isopkt_rx_ep->bEndpointAddress); 1210 1211 usb_fill_int_urb(urb, btmtk_data->udev, pipe, buf, size, 1212 btmtk_intr_complete, hdev, 1213 btmtk_data->isopkt_rx_ep->bInterval); 1214 1215 urb->transfer_flags |= URB_FREE_BUFFER; 1216 1217 usb_mark_last_busy(btmtk_data->udev); 1218 usb_anchor_urb(urb, &btmtk_data->isopkt_anchor); 1219 1220 err = usb_submit_urb(urb, mem_flags); 1221 if (err < 0) { 1222 if (err != -EPERM && err != -ENODEV) 1223 bt_dev_err(hdev, "urb %p submission failed (%d)", 1224 urb, -err); 1225 usb_unanchor_urb(urb); 1226 } 1227 1228 usb_free_urb(urb); 1229 1230 return err; 1231 } 1232 1233 static int btmtk_usb_isointf_init(struct hci_dev *hdev) 1234 { 1235 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1236 u8 iso_param[2] = { 0x08, 0x01 }; 1237 struct sk_buff *skb; 1238 int err; 1239 1240 spin_lock_init(&btmtk_data->isorxlock); 1241 1242 __set_mtk_intr_interface(hdev); 1243 1244 err = btmtk_submit_intr_urb(hdev, GFP_KERNEL); 1245 if (err < 0) { 1246 usb_kill_anchored_urbs(&btmtk_data->isopkt_anchor); 1247 bt_dev_err(hdev, "ISO intf not support (%d)", err); 1248 return err; 1249 } 1250 1251 skb = __hci_cmd_sync(hdev, 0xfd98, sizeof(iso_param), iso_param, 1252 HCI_INIT_TIMEOUT); 1253 if (IS_ERR(skb)) { 1254 bt_dev_err(hdev, "Failed to apply iso setting (%ld)", PTR_ERR(skb)); 1255 return PTR_ERR(skb); 1256 } 1257 kfree_skb(skb); 1258 1259 return 0; 1260 } 1261 1262 int btmtk_usb_resume(struct hci_dev *hdev) 1263 { 1264 /* This function describes the specific additional steps taken by MediaTek 1265 * when Bluetooth usb driver's resume function is called. 1266 */ 1267 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1268 1269 /* Resubmit urb for iso data transmission */ 1270 if (test_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags)) { 1271 if (btmtk_submit_intr_urb(hdev, GFP_NOIO) < 0) 1272 clear_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags); 1273 } 1274 1275 return 0; 1276 } 1277 EXPORT_SYMBOL_GPL(btmtk_usb_resume); 1278 1279 int btmtk_usb_suspend(struct hci_dev *hdev) 1280 { 1281 /* This function describes the specific additional steps taken by MediaTek 1282 * when Bluetooth usb driver's suspend function is called. 1283 */ 1284 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1285 1286 /* Stop urb anchor for iso data transmission */ 1287 if (test_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags)) 1288 usb_kill_anchored_urbs(&btmtk_data->isopkt_anchor); 1289 1290 return 0; 1291 } 1292 EXPORT_SYMBOL_GPL(btmtk_usb_suspend); 1293 1294 int btmtk_usb_setup(struct hci_dev *hdev) 1295 { 1296 struct btmtk_data *btmtk_data = hci_get_priv(hdev); 1297 struct btmtk_hci_wmt_params wmt_params; 1298 ktime_t calltime, delta, rettime; 1299 struct btmtk_tci_sleep tci_sleep; 1300 unsigned long long duration; 1301 struct sk_buff *skb; 1302 const char *fwname; 1303 int err, status; 1304 u32 dev_id = 0; 1305 char fw_bin_name[64]; 1306 u32 fw_version = 0, fw_flavor = 0; 1307 u8 param; 1308 1309 calltime = ktime_get(); 1310 1311 err = btmtk_usb_id_get(hdev, 0x80000008, &dev_id); 1312 if (err < 0) { 1313 bt_dev_err(hdev, "Failed to get device id (%d)", err); 1314 return err; 1315 } 1316 1317 if (!dev_id || dev_id != 0x7663) { 1318 err = btmtk_usb_id_get(hdev, 0x70010200, &dev_id); 1319 if (err < 0) { 1320 bt_dev_err(hdev, "Failed to get device id (%d)", err); 1321 return err; 1322 } 1323 err = btmtk_usb_id_get(hdev, 0x80021004, &fw_version); 1324 if (err < 0) { 1325 bt_dev_err(hdev, "Failed to get fw version (%d)", err); 1326 return err; 1327 } 1328 err = btmtk_usb_id_get(hdev, 0x70010020, &fw_flavor); 1329 if (err < 0) { 1330 bt_dev_err(hdev, "Failed to get fw flavor (%d)", err); 1331 return err; 1332 } 1333 fw_flavor = (fw_flavor & 0x00000080) >> 7; 1334 } 1335 1336 if (!dev_id) { 1337 u16 vid = le16_to_cpu(btmtk_data->udev->descriptor.idVendor); 1338 u16 pid = le16_to_cpu(btmtk_data->udev->descriptor.idProduct); 1339 int i; 1340 1341 for (i = 0; i < ARRAY_SIZE(btmtk_mt6639_devs); i++) { 1342 if (vid == btmtk_mt6639_devs[i].vendor && 1343 pid == btmtk_mt6639_devs[i].product) { 1344 dev_id = 0x6639; 1345 break; 1346 } 1347 } 1348 1349 if (dev_id) 1350 bt_dev_info(hdev, "MT6639: CHIPID=0x0000 with VID=%04x PID=%04x, using 0x6639", 1351 vid, pid); 1352 } 1353 1354 btmtk_data->dev_id = dev_id; 1355 1356 err = btmtk_register_coredump(hdev, btmtk_data->drv_name, fw_version); 1357 if (err < 0) 1358 bt_dev_err(hdev, "Failed to register coredump (%d)", err); 1359 1360 switch (dev_id) { 1361 case 0x7663: 1362 fwname = FIRMWARE_MT7663; 1363 break; 1364 case 0x7668: 1365 fwname = FIRMWARE_MT7668; 1366 break; 1367 case 0x7922: 1368 case 0x7925: 1369 case 0x7961: 1370 case 0x7902: 1371 case 0x6639: 1372 btmtk_fw_get_filename(fw_bin_name, sizeof(fw_bin_name), dev_id, 1373 fw_version, fw_flavor); 1374 1375 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name, 1376 btmtk_usb_hci_wmt_sync, 1377 dev_id); 1378 if (err < 0) { 1379 /* retry once if setup firmware error */ 1380 if (!test_and_set_bit(BTMTK_FIRMWARE_DL_RETRY, &btmtk_data->flags)) 1381 btmtk_reset_sync(hdev); 1382 bt_dev_err(hdev, "Failed to set up firmware (%d)", err); 1383 return err; 1384 } 1385 1386 /* It's Device EndPoint Reset Option Register */ 1387 err = btmtk_usb_uhw_reg_write(hdev, MTK_EP_RST_OPT, 1388 MTK_EP_RST_IN_OUT_OPT); 1389 if (err < 0) 1390 return err; 1391 1392 /* Enable Bluetooth protocol */ 1393 param = 1; 1394 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 1395 wmt_params.flag = 0; 1396 wmt_params.dlen = sizeof(param); 1397 wmt_params.data = ¶m; 1398 wmt_params.status = NULL; 1399 1400 err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params); 1401 if (err < 0) { 1402 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 1403 return err; 1404 } 1405 1406 hci_set_msft_opcode(hdev, 0xFD30); 1407 hci_set_aosp_capable(hdev); 1408 1409 /* Clear BTMTK_FIRMWARE_DL_RETRY if setup successfully */ 1410 test_and_clear_bit(BTMTK_FIRMWARE_DL_RETRY, &btmtk_data->flags); 1411 1412 /* Set up ISO interface after protocol enabled */ 1413 if (test_bit(BTMTK_ISOPKT_OVER_INTR, &btmtk_data->flags)) { 1414 if (!btmtk_usb_isointf_init(hdev)) 1415 set_bit(BTMTK_ISOPKT_RUNNING, &btmtk_data->flags); 1416 } 1417 1418 goto done; 1419 default: 1420 bt_dev_err(hdev, "Unsupported hardware variant (%08x)", 1421 dev_id); 1422 return -ENODEV; 1423 } 1424 1425 /* Query whether the firmware is already download */ 1426 wmt_params.op = BTMTK_WMT_SEMAPHORE; 1427 wmt_params.flag = 1; 1428 wmt_params.dlen = 0; 1429 wmt_params.data = NULL; 1430 wmt_params.status = &status; 1431 1432 err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params); 1433 if (err < 0) { 1434 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 1435 return err; 1436 } 1437 1438 if (status == BTMTK_WMT_PATCH_DONE) { 1439 bt_dev_info(hdev, "firmware already downloaded"); 1440 goto ignore_setup_fw; 1441 } 1442 1443 /* Setup a firmware which the device definitely requires */ 1444 err = btmtk_setup_firmware(hdev, fwname, 1445 btmtk_usb_hci_wmt_sync); 1446 if (err < 0) 1447 return err; 1448 1449 ignore_setup_fw: 1450 err = readx_poll_timeout(btmtk_usb_func_query, hdev, status, 1451 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 1452 2000, 5000000); 1453 /* -ETIMEDOUT happens */ 1454 if (err < 0) 1455 return err; 1456 1457 /* The other errors happen in btmtk_usb_func_query */ 1458 if (status < 0) 1459 return status; 1460 1461 if (status == BTMTK_WMT_ON_DONE) { 1462 bt_dev_info(hdev, "function already on"); 1463 goto ignore_func_on; 1464 } 1465 1466 /* Enable Bluetooth protocol */ 1467 param = 1; 1468 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 1469 wmt_params.flag = 0; 1470 wmt_params.dlen = sizeof(param); 1471 wmt_params.data = ¶m; 1472 wmt_params.status = NULL; 1473 1474 err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params); 1475 if (err < 0) { 1476 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 1477 return err; 1478 } 1479 1480 ignore_func_on: 1481 /* Apply the low power environment setup */ 1482 tci_sleep.mode = 0x5; 1483 tci_sleep.duration = cpu_to_le16(0x640); 1484 tci_sleep.host_duration = cpu_to_le16(0x640); 1485 tci_sleep.host_wakeup_pin = 0; 1486 tci_sleep.time_compensation = 0; 1487 1488 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 1489 HCI_INIT_TIMEOUT); 1490 if (IS_ERR(skb)) { 1491 err = PTR_ERR(skb); 1492 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 1493 return err; 1494 } 1495 kfree_skb(skb); 1496 1497 done: 1498 rettime = ktime_get(); 1499 delta = ktime_sub(rettime, calltime); 1500 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 1501 1502 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 1503 1504 return 0; 1505 } 1506 EXPORT_SYMBOL_GPL(btmtk_usb_setup); 1507 1508 int btmtk_usb_shutdown(struct hci_dev *hdev) 1509 { 1510 struct btmtk_data *data = hci_get_priv(hdev); 1511 struct btmtk_hci_wmt_params wmt_params; 1512 u8 param = 0; 1513 int err; 1514 1515 err = usb_autopm_get_interface(data->intf); 1516 if (err < 0) 1517 return err; 1518 1519 /* Disable the device */ 1520 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 1521 wmt_params.flag = 0; 1522 wmt_params.dlen = sizeof(param); 1523 wmt_params.data = ¶m; 1524 wmt_params.status = NULL; 1525 1526 err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params); 1527 if (err < 0) { 1528 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 1529 usb_autopm_put_interface(data->intf); 1530 return err; 1531 } 1532 1533 usb_autopm_put_interface(data->intf); 1534 return 0; 1535 } 1536 EXPORT_SYMBOL_GPL(btmtk_usb_shutdown); 1537 #endif 1538 1539 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); 1540 MODULE_AUTHOR("Mark Chen <mark-yw.chen@mediatek.com>"); 1541 MODULE_DESCRIPTION("Bluetooth support for MediaTek devices ver " VERSION); 1542 MODULE_VERSION(VERSION); 1543 MODULE_LICENSE("GPL"); 1544 MODULE_FIRMWARE(FIRMWARE_MT7622); 1545 MODULE_FIRMWARE(FIRMWARE_MT7663); 1546 MODULE_FIRMWARE(FIRMWARE_MT7668); 1547 MODULE_FIRMWARE(FIRMWARE_MT7922); 1548 MODULE_FIRMWARE(FIRMWARE_MT7961); 1549 MODULE_FIRMWARE(FIRMWARE_MT7925); 1550 MODULE_FIRMWARE(FIRMWARE_MT7927); 1551