1 /* 2 * Copyright (c) 2013-2019 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <linux/usb.h> 20 #include <linux/usb/hcd.h> 21 #include "if_usb.h" 22 #include "hif_usb_internal.h" 23 #include "target_type.h" /* TARGET_TYPE_ */ 24 #include "regtable_usb.h" 25 #include "ol_fw.h" 26 #include "hif_debug.h" 27 #include "epping_main.h" 28 #include "hif_main.h" 29 #include "usb_api.h" 30 31 #define DELAY_FOR_TARGET_READY 200 /* 200ms */ 32 33 /* Save memory addresses where we save FW ram dump, and then we could obtain 34 * them by symbol table. 35 */ 36 uint32_t fw_stack_addr; 37 void *fw_ram_seg_addr[FW_RAM_SEG_CNT]; 38 39 40 41 static int hif_usb_unload_dev_num = -1; 42 struct hif_usb_softc *g_usb_sc; 43 44 /** 45 * hif_usb_diag_write_cold_reset() - reset SOC by sending a diag command 46 * @scn: pointer to ol_softc structure 47 * 48 * Return: QDF_STATUS_SUCCESS if success else an appropriate QDF_STATUS error 49 */ 50 static inline QDF_STATUS 51 hif_usb_diag_write_cold_reset(struct hif_softc *scn) 52 { 53 struct hif_opaque_softc *hif_hdl = GET_HIF_OPAQUE_HDL(scn); 54 struct hif_target_info *tgt_info = &scn->target_info; 55 56 /* For Genoa, chip-reset is handled in CNSS driver */ 57 if (tgt_info->target_type == TARGET_TYPE_QCN7605) 58 return QDF_STATUS_SUCCESS; 59 60 HIF_DBG("%s: resetting SOC", __func__); 61 62 return hif_diag_write_access(hif_hdl, 63 (ROME_USB_SOC_RESET_CONTROL_COLD_RST_LSB | 64 ROME_USB_RTC_SOC_BASE_ADDRESS), 65 SOC_RESET_CONTROL_COLD_RST_SET(1)); 66 } 67 68 /** 69 * hif_usb_procfs_init() - create init procfs 70 * @scn: pointer to hif_usb_softc structure 71 * 72 * Return: int 0 if success else an appropriate error number 73 */ 74 static int 75 hif_usb_procfs_init(struct hif_softc *scn) 76 { 77 int ret = 0; 78 79 HIF_ENTER(); 80 81 if (athdiag_procfs_init(scn) != 0) { 82 HIF_ERROR("athdiag_procfs_init failed"); 83 ret = A_ERROR; 84 } 85 86 scn->athdiag_procfs_inited = true; 87 88 HIF_EXIT(); 89 return ret; 90 } 91 92 /** 93 * hif_nointrs(): disable IRQ 94 * @scn: pointer to struct hif_softc 95 * 96 * This function stops interrupt(s) 97 * 98 * Return: none 99 */ 100 void hif_usb_nointrs(struct hif_softc *scn) 101 { 102 103 } 104 105 /** 106 * hif_usb_reboot() - called at reboot time to reset WLAN SOC 107 * @nb: pointer to notifier_block registered during register_reboot_notifier 108 * @val: code indicating reboot reason 109 * @v: unused pointer 110 * 111 * Return: int 0 if success else an appropriate error number 112 */ 113 static int hif_usb_reboot(struct notifier_block *nb, unsigned long val, 114 void *v) 115 { 116 struct hif_usb_softc *sc; 117 118 HIF_ENTER(); 119 sc = container_of(nb, struct hif_usb_softc, reboot_notifier); 120 /* do cold reset */ 121 hif_usb_diag_write_cold_reset(HIF_GET_SOFTC(sc)); 122 HIF_EXIT(); 123 return NOTIFY_DONE; 124 } 125 126 /** 127 * hif_usb_disable_lpm() - Disable lpm feature of usb2.0 128 * @udev: pointer to usb_device for which LPM is to be disabled 129 * 130 * LPM needs to be disabled to avoid usb2.0 probe timeout 131 * 132 * Return: int 0 if success else an appropriate error number 133 */ 134 static int hif_usb_disable_lpm(struct usb_device *udev) 135 { 136 struct usb_hcd *hcd; 137 int ret = -EPERM; 138 139 HIF_ENTER(); 140 141 if (!udev || !udev->bus) { 142 HIF_ERROR("Invalid input parameters"); 143 goto exit; 144 } 145 146 hcd = bus_to_hcd(udev->bus); 147 if (udev->usb2_hw_lpm_enabled) { 148 if (hcd->driver->set_usb2_hw_lpm) { 149 ret = hcd->driver->set_usb2_hw_lpm(hcd, udev, false); 150 if (!ret) { 151 udev->usb2_hw_lpm_enabled = false; 152 udev->usb2_hw_lpm_capable = false; 153 HIF_TRACE("%s: LPM is disabled", __func__); 154 } else { 155 HIF_TRACE("%s: Fail to disable LPM", 156 __func__); 157 } 158 } else { 159 HIF_TRACE("%s: hcd doesn't support LPM", 160 __func__); 161 } 162 } else { 163 HIF_TRACE("%s: LPM isn't enabled", __func__); 164 } 165 exit: 166 HIF_EXIT(); 167 return ret; 168 } 169 170 /** 171 * hif_usb_enable_bus() - enable usb bus 172 * @ol_sc: hif_softc struct 173 * @dev: device pointer 174 * @bdev: bus dev pointer 175 * @bid: bus id pointer 176 * @type: enum hif_enable_type such as HIF_ENABLE_TYPE_PROBE 177 * 178 * Return: QDF_STATUS_SUCCESS on success and error QDF status on failure 179 */ 180 QDF_STATUS hif_usb_enable_bus(struct hif_softc *scn, 181 struct device *dev, void *bdev, 182 const struct hif_bus_id *bid, 183 enum hif_enable_type type) 184 185 { 186 struct usb_interface *interface = (struct usb_interface *)bdev; 187 struct usb_device_id *id = (struct usb_device_id *)bid; 188 int ret = 0; 189 struct hif_usb_softc *sc; 190 struct usb_device *usbdev = interface_to_usbdev(interface); 191 int vendor_id, product_id; 192 struct hif_target_info *tgt_info; 193 struct hif_opaque_softc *hif_hdl = GET_HIF_OPAQUE_HDL(scn); 194 u32 hif_type; 195 u32 target_type; 196 197 if (!scn) { 198 HIF_ERROR("%s: hif_ctx is NULL", __func__); 199 goto err_usb; 200 } 201 202 sc = HIF_GET_USB_SOFTC(scn); 203 204 HIF_INFO("%s hif_softc %pK usbdev %pK interface %pK\n", 205 __func__, 206 scn, 207 usbdev, 208 interface); 209 210 vendor_id = qdf_le16_to_cpu(usbdev->descriptor.idVendor); 211 product_id = qdf_le16_to_cpu(usbdev->descriptor.idProduct); 212 213 HIF_ERROR("%s: con_mode = 0x%x, vendor_id = 0x%x product_id = 0x%x", 214 __func__, hif_get_conparam(scn), vendor_id, product_id); 215 216 sc->pdev = (void *)usbdev; 217 sc->dev = &usbdev->dev; 218 sc->devid = id->idProduct; 219 220 hif_get_device_type(product_id, 0, &hif_type, &target_type); 221 tgt_info = hif_get_target_info_handle(hif_hdl); 222 if (target_type == TARGET_TYPE_QCN7605) 223 tgt_info->target_type = TARGET_TYPE_QCN7605; 224 225 /* 226 * For Genoa, skip set_configuration, since it is handled 227 * by CNSS driver. 228 */ 229 if (target_type != TARGET_TYPE_QCN7605) { 230 usb_get_dev(usbdev); 231 if ((usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 232 USB_REQ_SET_CONFIGURATION, 0, 1, 0, 233 NULL, 0, HZ)) < 0) { 234 HIF_ERROR("%s[%d]", __func__, __LINE__); 235 goto err_usb; 236 } 237 usb_set_interface(usbdev, 0, 0); 238 sc->reboot_notifier.notifier_call = hif_usb_reboot; 239 register_reboot_notifier(&sc->reboot_notifier); 240 } 241 242 /* disable lpm to avoid usb2.0 probe timeout */ 243 hif_usb_disable_lpm(usbdev); 244 245 /* params need to be added - TODO 246 * scn->enableuartprint = 1; 247 * scn->enablefwlog = 0; 248 * scn->max_no_of_peers = 1; 249 */ 250 251 sc->interface = interface; 252 if (hif_usb_device_init(sc) != QDF_STATUS_SUCCESS) { 253 HIF_ERROR("ath: %s: hif_usb_device_init failed", __func__); 254 goto err_reset; 255 } 256 257 if (hif_usb_procfs_init(scn)) 258 goto err_reset; 259 260 hif_usb_unload_dev_num = usbdev->devnum; 261 g_usb_sc = sc; 262 HIF_EXIT(); 263 return 0; 264 265 err_reset: 266 hif_usb_diag_write_cold_reset(scn); 267 g_usb_sc = NULL; 268 hif_usb_unload_dev_num = -1; 269 if (target_type != TARGET_TYPE_QCN7605) 270 unregister_reboot_notifier(&sc->reboot_notifier); 271 err_usb: 272 ret = QDF_STATUS_E_FAILURE; 273 if (target_type != TARGET_TYPE_QCN7605) 274 usb_put_dev(usbdev); 275 return ret; 276 } 277 278 279 /** 280 * hif_usb_close(): close bus, delete hif_sc 281 * @ol_sc: soft_sc struct 282 * 283 * Return: none 284 */ 285 void hif_usb_close(struct hif_softc *scn) 286 { 287 g_usb_sc = NULL; 288 } 289 290 /** 291 * hif_usb_disable_bus(): This function disables usb bus 292 * @hif_ctx: pointer to struct hif_softc 293 * 294 * Return: none 295 */ 296 void hif_usb_disable_bus(struct hif_softc *hif_ctx) 297 { 298 struct hif_usb_softc *sc = HIF_GET_USB_SOFTC(hif_ctx); 299 struct usb_interface *interface = sc->interface; 300 struct usb_device *udev = interface_to_usbdev(interface); 301 struct hif_target_info *tgt_info = &hif_ctx->target_info; 302 303 HIF_TRACE("%s: trying to remove hif_usb!", __func__); 304 305 /* disable lpm to avoid following cold reset will 306 * cause xHCI U1/U2 timeout 307 */ 308 if (tgt_info->target_type != TARGET_TYPE_QCN7605) 309 usb_disable_lpm(udev); 310 311 /* wait for disable lpm */ 312 set_current_state(TASK_INTERRUPTIBLE); 313 schedule_timeout(msecs_to_jiffies(DELAY_FOR_TARGET_READY)); 314 set_current_state(TASK_RUNNING); 315 316 /* do cold reset */ 317 hif_usb_diag_write_cold_reset(hif_ctx); 318 319 if (g_usb_sc->suspend_state) 320 hif_bus_resume(GET_HIF_OPAQUE_HDL(hif_ctx)); 321 322 if (tgt_info->target_type != TARGET_TYPE_QCN7605) { 323 unregister_reboot_notifier(&sc->reboot_notifier); 324 usb_put_dev(udev); 325 } 326 327 hif_usb_device_deinit(sc); 328 329 HIF_TRACE("%s hif_usb removed !!!!!!", __func__); 330 } 331 332 /** 333 * hif_usb_bus_suspend() - suspend the bus 334 * @hif_ctx: hif_ctx 335 * 336 * This function suspends the bus, but usb doesn't need to suspend. 337 * Therefore just remove all the pending urb transactions 338 * 339 * Return: 0 for success and non-zero for failure 340 */ 341 int hif_usb_bus_suspend(struct hif_softc *hif_ctx) 342 { 343 struct hif_usb_softc *sc = HIF_GET_USB_SOFTC(hif_ctx); 344 struct HIF_DEVICE_USB *device = HIF_GET_USB_DEVICE(hif_ctx); 345 346 HIF_ENTER(); 347 sc->suspend_state = 1; 348 usb_hif_flush_all(device); 349 HIF_EXIT(); 350 return 0; 351 } 352 353 /** 354 * hif_usb_bus_resume() - hif resume API 355 * @hif_ctx: struct hif_opaque_softc 356 * 357 * This function resumes the bus. but usb doesn't need to resume. 358 * Post recv urbs for RX data pipe 359 * 360 * Return: 0 for success and non-zero for failure 361 */ 362 int hif_usb_bus_resume(struct hif_softc *hif_ctx) 363 { 364 struct hif_usb_softc *sc = HIF_GET_USB_SOFTC(hif_ctx); 365 struct HIF_DEVICE_USB *device = HIF_GET_USB_DEVICE(hif_ctx); 366 367 HIF_ENTER(); 368 sc->suspend_state = 0; 369 usb_hif_start_recv_pipes(device); 370 371 HIF_EXIT(); 372 return 0; 373 } 374 375 /** 376 * hif_usb_bus_reset_resume() - resume the bus after reset 377 * @scn: struct hif_opaque_softc 378 * 379 * This function is called to tell the driver that USB device has been resumed 380 * and it has also been reset. The driver should redo any necessary 381 * initialization. This function resets WLAN SOC. 382 * 383 * Return: int 0 for success, non zero for failure 384 */ 385 int hif_usb_bus_reset_resume(struct hif_softc *hif_ctx) 386 { 387 int ret = 0; 388 389 HIF_ENTER(); 390 if (hif_usb_diag_write_cold_reset(hif_ctx) != QDF_STATUS_SUCCESS) 391 ret = 1; 392 393 HIF_EXIT(); 394 return ret; 395 } 396 397 /** 398 * hif_usb_open()- initialization routine for usb bus 399 * @ol_sc: ol_sc 400 * @bus_type: bus type 401 * 402 * Return: QDF_STATUS_SUCCESS on success and error QDF status on failure 403 */ 404 QDF_STATUS hif_usb_open(struct hif_softc *hif_ctx, 405 enum qdf_bus_type bus_type) 406 { 407 hif_ctx->bus_type = bus_type; 408 return QDF_STATUS_SUCCESS; 409 } 410 411 /** 412 * hif_usb_disable_isr(): disable isr 413 * @hif_ctx: struct hif_softc 414 * 415 * Return: void 416 */ 417 void hif_usb_disable_isr(struct hif_softc *hif_ctx) 418 { 419 /* TODO */ 420 } 421 422 /** 423 * hif_usb_reg_tbl_attach()- attach hif, target register tables 424 * @scn: pointer to ol_softc structure 425 * 426 * Attach host and target register tables based on target_type, target_version 427 * 428 * Return: none 429 */ 430 void hif_usb_reg_tbl_attach(struct hif_softc *scn) 431 { 432 u_int32_t hif_type, target_type; 433 int32_t ret = 0; 434 uint32_t chip_id; 435 QDF_STATUS rv; 436 struct hif_target_info *tgt_info = &scn->target_info; 437 struct hif_opaque_softc *hif_hdl = GET_HIF_OPAQUE_HDL(scn); 438 439 if (!scn->hostdef && !scn->targetdef) { 440 switch (tgt_info->target_type) { 441 case TARGET_TYPE_AR6320: 442 switch (tgt_info->target_version) { 443 case AR6320_REV1_VERSION: 444 case AR6320_REV1_1_VERSION: 445 case AR6320_REV1_3_VERSION: 446 hif_type = HIF_TYPE_AR6320; 447 target_type = TARGET_TYPE_AR6320; 448 break; 449 case AR6320_REV2_1_VERSION: 450 case AR6320_REV3_VERSION: 451 case QCA9377_REV1_1_VERSION: 452 case QCA9379_REV1_VERSION: 453 hif_type = HIF_TYPE_AR6320V2; 454 target_type = TARGET_TYPE_AR6320V2; 455 break; 456 default: 457 ret = -1; 458 break; 459 } 460 break; 461 default: 462 ret = -1; 463 break; 464 } 465 466 if (ret) 467 return; 468 469 /* assign target register table if we find 470 * corresponding type 471 */ 472 hif_register_tbl_attach(scn, hif_type); 473 target_register_tbl_attach(scn, target_type); 474 /* read the chip revision*/ 475 rv = hif_diag_read_access(hif_hdl, 476 (CHIP_ID_ADDRESS | 477 RTC_SOC_BASE_ADDRESS), 478 &chip_id); 479 if (rv != QDF_STATUS_SUCCESS) { 480 HIF_ERROR("%s: get chip id val (%d)", __func__, 481 rv); 482 } 483 tgt_info->target_revision = 484 CHIP_ID_REVISION_GET(chip_id); 485 } 486 } 487 488 /** 489 * hif_usb_get_hw_info()- attach register table for USB 490 * @hif_ctx: pointer to hif_softc structure 491 492 * This function is used to attach the host and target register tables. 493 * Ideally, we should not attach register tables as a part of this function. 494 * There is scope of cleanup to move register table attach during 495 * initialization for USB bus. 496 * 497 * The reason we are doing register table attach for USB here is that, it relies 498 * on target_info->target_type and target_info->target_version, 499 * which get populated during bmi_firmware_download. "hif_get_fw_info" is the 500 * only initialization related call into HIF there after. 501 * 502 * To fix this, we can move the "get target info, functionality currently in 503 * bmi_firmware_download into hif initialization functions. This change will 504 * affect all buses. Can be taken up as a part of convergence. 505 * 506 * Return: none 507 */ 508 void hif_usb_get_hw_info(struct hif_softc *hif_ctx) 509 { 510 hif_usb_reg_tbl_attach(hif_ctx); 511 } 512 513 #if defined(CONFIG_PLD_USB_CNSS) && !defined(CONFIG_BYPASS_QMI) 514 /** 515 * hif_bus_configure() - configure the bus 516 * @scn: pointer to the hif context. 517 * 518 * return: 0 for success. nonzero for failure. 519 */ 520 int hif_usb_bus_configure(struct hif_softc *scn) 521 { 522 struct pld_wlan_enable_cfg cfg; 523 enum pld_driver_mode mode; 524 uint32_t con_mode = hif_get_conparam(scn); 525 526 if (QDF_GLOBAL_FTM_MODE == con_mode) 527 mode = PLD_FTM; 528 else if (QDF_GLOBAL_COLDBOOT_CALIB_MODE == con_mode) 529 mode = PLD_COLDBOOT_CALIBRATION; 530 else if (QDF_IS_EPPING_ENABLED(con_mode)) 531 mode = PLD_EPPING; 532 else 533 mode = PLD_MISSION; 534 535 return pld_wlan_enable(scn->qdf_dev->dev, &cfg, mode); 536 } 537 #else 538 /** 539 * hif_bus_configure() - configure the bus 540 * @scn: pointer to the hif context. 541 * 542 * return: 0 for success. nonzero for failure. 543 */ 544 int hif_usb_bus_configure(struct hif_softc *scn) 545 { 546 return 0; 547 } 548 #endif 549 550 /** 551 * hif_usb_irq_enable() - hif_usb_irq_enable 552 * @scn: hif_softc 553 * @ce_id: ce_id 554 * 555 * Return: void 556 */ 557 void hif_usb_irq_enable(struct hif_softc *scn, int ce_id) 558 { 559 } 560 561 /** 562 * hif_usb_irq_disable() - hif_usb_irq_disable 563 * @scn: hif_softc 564 * @ce_id: ce_id 565 * 566 * Return: void 567 */ 568 void hif_usb_irq_disable(struct hif_softc *scn, int ce_id) 569 { 570 } 571 572 /** 573 * hif_usb_shutdown_bus_device() - This function shuts down the device 574 * @scn: hif opaque pointer 575 * 576 * Return: void 577 */ 578 void hif_usb_shutdown_bus_device(struct hif_softc *scn) 579 { 580 } 581 582 /** 583 * hif_trigger_dump() - trigger various dump cmd 584 * @scn: struct hif_opaque_softc 585 * @cmd_id: dump command id 586 * @start: start/stop dump 587 * 588 * Return: None 589 */ 590 void hif_trigger_dump(struct hif_opaque_softc *scn, uint8_t cmd_id, bool start) 591 { 592 } 593 594 /** 595 * hif_wlan_disable() - call the platform driver to disable wlan 596 * @scn: scn 597 * 598 * Return: void 599 */ 600 void hif_wlan_disable(struct hif_softc *scn) 601 { 602 } 603 604 /** 605 * hif_fw_assert_ramdump_pattern() - handle firmware assert with ramdump pattern 606 * @sc: pointer to hif_usb_softc structure 607 * 608 * Return: void 609 */ 610 611 void hif_fw_assert_ramdump_pattern(struct hif_usb_softc *sc) 612 { 613 uint32_t *reg, pattern, i = 0; 614 uint32_t len; 615 uint8_t *data; 616 uint8_t *ram_ptr = NULL; 617 char *fw_ram_seg_name[FW_RAM_SEG_CNT] = {"DRAM", "IRAM", "AXI"}; 618 size_t fw_ram_reg_size[FW_RAM_SEG_CNT] = { 619 FW_RAMDUMP_DRAMSIZE, 620 FW_RAMDUMP_IRAMSIZE, 621 FW_RAMDUMP_AXISIZE }; 622 623 data = sc->fw_data; 624 len = sc->fw_data_len; 625 pattern = *((uint32_t *) data); 626 627 qdf_assert(sc->ramdump_index < FW_RAM_SEG_CNT); 628 i = sc->ramdump_index; 629 reg = (uint32_t *) (data + 4); 630 if (sc->fw_ram_dumping == 0) { 631 sc->fw_ram_dumping = 1; 632 HIF_ERROR("Firmware %s dump:\n", fw_ram_seg_name[i]); 633 sc->ramdump[i] = 634 qdf_mem_malloc(sizeof(struct fw_ramdump) + 635 fw_ram_reg_size[i]); 636 if (!sc->ramdump[i]) 637 QDF_BUG(0); 638 639 (sc->ramdump[i])->mem = (uint8_t *) (sc->ramdump[i] + 1); 640 fw_ram_seg_addr[i] = (sc->ramdump[i])->mem; 641 HIF_ERROR("FW %s start addr = %#08x\n", 642 fw_ram_seg_name[i], *reg); 643 HIF_ERROR("Memory addr for %s = %pK\n", 644 fw_ram_seg_name[i], 645 (sc->ramdump[i])->mem); 646 (sc->ramdump[i])->start_addr = *reg; 647 (sc->ramdump[i])->length = 0; 648 } 649 reg++; 650 ram_ptr = (sc->ramdump[i])->mem + (sc->ramdump[i])->length; 651 (sc->ramdump[i])->length += (len - 8); 652 if (sc->ramdump[i]->length <= fw_ram_reg_size[i]) { 653 qdf_mem_copy(ram_ptr, (uint8_t *) reg, len - 8); 654 } else { 655 HIF_ERROR("memory copy overlap\n"); 656 QDF_BUG(0); 657 } 658 659 if (pattern == FW_RAMDUMP_END_PATTERN) { 660 HIF_ERROR("%s memory size = %d\n", fw_ram_seg_name[i], 661 (sc->ramdump[i])->length); 662 if (i == (FW_RAM_SEG_CNT - 1)) 663 QDF_BUG(0); 664 665 sc->ramdump_index++; 666 sc->fw_ram_dumping = 0; 667 } 668 } 669 670 /** 671 * hif_usb_ramdump_handler(): dump bus debug registers 672 * @scn: struct hif_opaque_softc 673 * 674 * This function is to receive information of firmware crash dump, and 675 * save it in host memory. It consists of 5 parts: registers, call stack, 676 * DRAM dump, IRAM dump, and AXI dump, and they are reported to host in order. 677 * 678 * registers: wrapped in a USB packet by starting as FW_ASSERT_PATTERN and 679 * 60 registers. 680 * call stack: wrapped in multiple USB packets, and each of them starts as 681 * FW_REG_PATTERN and contains multiple double-words. The tail 682 * of the last packet is FW_REG_END_PATTERN. 683 * DRAM dump: wrapped in multiple USB pakcets, and each of them start as 684 * FW_RAMDUMP_PATTERN and contains multiple double-wors. The tail 685 * of the last packet is FW_RAMDUMP_END_PATTERN; 686 * IRAM dump and AXI dump are with the same format as DRAM dump. 687 * 688 * Return: 0 for success or error code 689 */ 690 691 void hif_usb_ramdump_handler(struct hif_opaque_softc *scn) 692 { 693 uint32_t *reg, pattern, i, start_addr = 0; 694 uint32_t len; 695 uint8_t *data; 696 uint8_t str_buf[128]; 697 uint32_t remaining; 698 struct hif_usb_softc *sc = HIF_GET_USB_SOFTC(scn); 699 struct hif_softc *hif_ctx = HIF_GET_SOFTC(scn); 700 struct hif_target_info *tgt_info = &hif_ctx->target_info; 701 702 data = sc->fw_data; 703 len = sc->fw_data_len; 704 pattern = *((uint32_t *) data); 705 706 if (pattern == FW_ASSERT_PATTERN) { 707 HIF_ERROR("Firmware crash detected...\n"); 708 HIF_ERROR("target_type: %d.target_version %d. target_revision%d.", 709 tgt_info->target_type, 710 tgt_info->target_version, 711 tgt_info->target_revision); 712 713 reg = (uint32_t *) (data + 4); 714 print_hex_dump(KERN_DEBUG, " ", DUMP_PREFIX_OFFSET, 16, 4, reg, 715 min_t(uint32_t, len - 4, FW_REG_DUMP_CNT * 4), 716 false); 717 sc->fw_ram_dumping = 0; 718 719 } else if (pattern == FW_REG_PATTERN) { 720 reg = (uint32_t *) (data + 4); 721 start_addr = *reg++; 722 if (sc->fw_ram_dumping == 0) { 723 qdf_nofl_err("Firmware stack dump:"); 724 sc->fw_ram_dumping = 1; 725 fw_stack_addr = start_addr; 726 } 727 remaining = len - 8; 728 /* len is in byte, but it's printed in double-word. */ 729 for (i = 0; i < (len - 8); i += 16) { 730 if ((*reg == FW_REG_END_PATTERN) && (i == len - 12)) { 731 sc->fw_ram_dumping = 0; 732 qdf_nofl_err("Stack start address = %#08x", 733 fw_stack_addr); 734 break; 735 } 736 hex_dump_to_buffer(reg, remaining, 16, 4, str_buf, 737 sizeof(str_buf), false); 738 qdf_nofl_err("%#08x: %s", start_addr + i, str_buf); 739 remaining -= 16; 740 reg += 4; 741 } 742 } else if ((!sc->enable_self_recovery) && 743 ((pattern & FW_RAMDUMP_PATTERN_MASK) == 744 FW_RAMDUMP_PATTERN)) { 745 hif_fw_assert_ramdump_pattern(sc); 746 } 747 } 748 749 #ifndef QCA_WIFI_3_0 750 /** 751 * hif_check_fw_reg(): hif_check_fw_reg 752 * @scn: scn 753 * @state: 754 * 755 * Return: int 756 */ 757 int hif_check_fw_reg(struct hif_opaque_softc *scn) 758 { 759 return 0; 760 } 761 #endif 762 763 /** 764 * hif_usb_needs_bmi() - return true if the soc needs bmi through the driver 765 * @scn: hif context 766 * 767 * Return: true if soc needs driver bmi otherwise false 768 */ 769 bool hif_usb_needs_bmi(struct hif_softc *scn) 770 { 771 struct hif_target_info *tgt_info = &scn->target_info; 772 773 /* BMI is not supported in Genoa */ 774 if (tgt_info->target_type == TARGET_TYPE_QCN7605) 775 return false; 776 777 return true; 778 } 779