1 /* 2 * Copyright (c) 2013-2020 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 /** 20 * DOC: if_ahb.c 21 * 22 * c file for ahb specific implementations. 23 */ 24 25 #include "hif.h" 26 #include "target_type.h" 27 #include "hif_main.h" 28 #include "hif_debug.h" 29 #include "hif_io32.h" 30 #include "ce_main.h" 31 #include "ce_api.h" 32 #include "ce_tasklet.h" 33 #include "if_ahb.h" 34 #include "if_pci.h" 35 #include "ahb_api.h" 36 #include "pci_api.h" 37 #include "hif_napi.h" 38 #include "qal_vbus_dev.h" 39 40 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0) 41 #define IRQF_DISABLED 0x00000020 42 #endif 43 44 #define HIF_IC_CE0_IRQ_OFFSET 4 45 #define HIF_IC_MAX_IRQ 52 46 47 static uint8_t ic_irqnum[HIF_IC_MAX_IRQ]; 48 /* integrated chip irq names */ 49 const char *ic_irqname[HIF_IC_MAX_IRQ] = { 50 "misc-pulse1", 51 "misc-latch", 52 "sw-exception", 53 "watchdog", 54 "ce0", 55 "ce1", 56 "ce2", 57 "ce3", 58 "ce4", 59 "ce5", 60 "ce6", 61 "ce7", 62 "ce8", 63 "ce9", 64 "ce10", 65 "ce11", 66 "host2wbm-desc-feed", 67 "host2reo-re-injection", 68 "host2reo-command", 69 "host2rxdma-monitor-ring3", 70 "host2rxdma-monitor-ring2", 71 "host2rxdma-monitor-ring1", 72 "reo2ost-exception", 73 "wbm2host-rx-release", 74 "reo2host-status", 75 "reo2host-destination-ring4", 76 "reo2host-destination-ring3", 77 "reo2host-destination-ring2", 78 "reo2host-destination-ring1", 79 "rxdma2host-monitor-destination-mac3", 80 "rxdma2host-monitor-destination-mac2", 81 "rxdma2host-monitor-destination-mac1", 82 "ppdu-end-interrupts-mac3", 83 "ppdu-end-interrupts-mac2", 84 "ppdu-end-interrupts-mac1", 85 "rxdma2host-monitor-status-ring-mac3", 86 "rxdma2host-monitor-status-ring-mac2", 87 "rxdma2host-monitor-status-ring-mac1", 88 "host2rxdma-host-buf-ring-mac3", 89 "host2rxdma-host-buf-ring-mac2", 90 "host2rxdma-host-buf-ring-mac1", 91 "rxdma2host-destination-ring-mac3", 92 "rxdma2host-destination-ring-mac2", 93 "rxdma2host-destination-ring-mac1", 94 "host2tcl-input-ring4", 95 "host2tcl-input-ring3", 96 "host2tcl-input-ring2", 97 "host2tcl-input-ring1", 98 "wbm2host-tx-completions-ring3", 99 "wbm2host-tx-completions-ring2", 100 "wbm2host-tx-completions-ring1", 101 "tcl2host-status-ring", 102 }; 103 104 /** hif_ahb_get_irq_name() - get irqname 105 * This function gives irqnumber to irqname 106 * mapping. 107 * 108 * @irq_no: irq number 109 * 110 * Return: irq name 111 */ 112 const char *hif_ahb_get_irq_name(int irq_no) 113 { 114 return ic_irqname[irq_no]; 115 } 116 117 /** 118 * hif_disable_isr() - disable isr 119 * 120 * This function disables isr and kills tasklets 121 * 122 * @hif_ctx: struct hif_softc 123 * 124 * Return: void 125 */ 126 void hif_ahb_disable_isr(struct hif_softc *scn) 127 { 128 struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(scn); 129 130 hif_exec_kill(&scn->osc); 131 hif_nointrs(scn); 132 ce_tasklet_kill(scn); 133 tasklet_kill(&sc->intr_tq); 134 qdf_atomic_set(&scn->active_tasklet_cnt, 0); 135 qdf_atomic_set(&scn->active_grp_tasklet_cnt, 0); 136 } 137 138 /** 139 * hif_dump_registers() - dump bus debug registers 140 * @scn: struct hif_opaque_softc 141 * 142 * This function dumps hif bus debug registers 143 * 144 * Return: 0 for success or error code 145 */ 146 int hif_ahb_dump_registers(struct hif_softc *hif_ctx) 147 { 148 int status; 149 struct hif_softc *scn = HIF_GET_SOFTC(hif_ctx); 150 151 status = hif_dump_ce_registers(scn); 152 if (status) 153 HIF_ERROR("%s: Dump CE Registers Failed status %d", __func__, 154 status); 155 156 return 0; 157 } 158 159 /** 160 * hif_ahb_close() - hif_bus_close 161 * @scn: pointer to the hif context. 162 * 163 * This is a callback function for hif_bus_close. 164 * 165 * 166 * Return: n/a 167 */ 168 void hif_ahb_close(struct hif_softc *scn) 169 { 170 hif_ce_close(scn); 171 } 172 173 /** 174 * hif_bus_open() - hif_ahb open 175 * @hif_ctx: hif context 176 * @bus_type: bus type 177 * 178 * This is a callback function for hif_bus_open. 179 * 180 * Return: n/a 181 */ 182 QDF_STATUS hif_ahb_open(struct hif_softc *hif_ctx, enum qdf_bus_type bus_type) 183 { 184 185 struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(hif_ctx); 186 187 qdf_spinlock_create(&sc->irq_lock); 188 return hif_ce_open(hif_ctx); 189 } 190 191 /** 192 * hif_bus_configure() - Configure the bus 193 * @scn: pointer to the hif context. 194 * 195 * This function configure the ahb bus 196 * 197 * return: 0 for success. nonzero for failure. 198 */ 199 int hif_ahb_bus_configure(struct hif_softc *scn) 200 { 201 return hif_pci_bus_configure(scn); 202 } 203 204 /** 205 * hif_configure_msi_ahb - Configure MSI interrupts 206 * @sc : pointer to the hif context 207 * 208 * return: 0 for success. nonzero for failure. 209 */ 210 211 int hif_configure_msi_ahb(struct hif_pci_softc *sc) 212 { 213 return 0; 214 } 215 216 /** 217 * hif_ahb_configure_legacy_irq() - Configure Legacy IRQ 218 * @sc: pointer to the hif context. 219 * 220 * This function registers the irq handler and enables legacy interrupts 221 * 222 * return: 0 for success. nonzero for failure. 223 */ 224 int hif_ahb_configure_legacy_irq(struct hif_pci_softc *sc) 225 { 226 int ret = 0; 227 struct hif_softc *scn = HIF_GET_SOFTC(sc); 228 struct platform_device *pdev = (struct platform_device *)sc->pdev; 229 int irq = 0; 230 231 /* do not support MSI or MSI IRQ failed */ 232 tasklet_init(&sc->intr_tq, wlan_tasklet, (unsigned long)sc); 233 qal_vbus_get_irq((struct qdf_pfm_hndl *)pdev, "legacy", &irq); 234 if (irq < 0) { 235 dev_err(&pdev->dev, "Unable to get irq\n"); 236 ret = -EFAULT; 237 goto end; 238 } 239 ret = request_irq(irq, hif_pci_legacy_ce_interrupt_handler, 240 IRQF_DISABLED, "wlan_ahb", sc); 241 if (ret) { 242 dev_err(&pdev->dev, "ath_request_irq failed\n"); 243 ret = -EFAULT; 244 goto end; 245 } 246 sc->irq = irq; 247 248 /* Use Legacy PCI Interrupts */ 249 hif_write32_mb(sc, sc->mem + (SOC_CORE_BASE_ADDRESS | 250 PCIE_INTR_ENABLE_ADDRESS), 251 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); 252 /* read once to flush */ 253 hif_read32_mb(sc, sc->mem + (SOC_CORE_BASE_ADDRESS | 254 PCIE_INTR_ENABLE_ADDRESS)); 255 256 end: 257 return ret; 258 } 259 260 int hif_ahb_configure_irq(struct hif_pci_softc *sc) 261 { 262 int ret = 0; 263 struct hif_softc *scn = HIF_GET_SOFTC(sc); 264 struct platform_device *pdev = (struct platform_device *)sc->pdev; 265 struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(scn); 266 struct CE_attr *host_ce_conf = hif_state->host_ce_config; 267 int irq = 0; 268 int i; 269 270 /* configure per CE interrupts */ 271 for (i = 0; i < scn->ce_count; i++) { 272 if (host_ce_conf[i].flags & CE_ATTR_DISABLE_INTR) 273 continue; 274 ret = pfrm_get_irq(&pdev->dev, (struct qdf_pfm_hndl *)pdev, 275 ic_irqname[HIF_IC_CE0_IRQ_OFFSET + i], 276 HIF_IC_CE0_IRQ_OFFSET + i, &irq); 277 if (ret) { 278 dev_err(&pdev->dev, "get irq failed\n"); 279 ret = -EFAULT; 280 goto end; 281 } 282 283 ic_irqnum[HIF_IC_CE0_IRQ_OFFSET + i] = irq; 284 ret = pfrm_request_irq(&pdev->dev, irq, 285 hif_ahb_interrupt_handler, 286 IRQF_TRIGGER_RISING, 287 ic_irqname[HIF_IC_CE0_IRQ_OFFSET + i], 288 &hif_state->tasklets[i]); 289 if (ret) { 290 dev_err(&pdev->dev, "ath_request_irq failed\n"); 291 ret = -EFAULT; 292 goto end; 293 } 294 hif_ahb_irq_enable(scn, i); 295 } 296 297 end: 298 return ret; 299 } 300 301 int hif_ahb_configure_grp_irq(struct hif_softc *scn, 302 struct hif_exec_context *hif_ext_group) 303 { 304 int ret = 0; 305 struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(scn); 306 struct platform_device *pdev = (struct platform_device *)sc->pdev; 307 int irq = 0; 308 int j; 309 310 /* configure external interrupts */ 311 hif_ext_group->irq_enable = &hif_ahb_exec_grp_irq_enable; 312 hif_ext_group->irq_disable = &hif_ahb_exec_grp_irq_disable; 313 hif_ext_group->irq_name = &hif_ahb_get_irq_name; 314 hif_ext_group->work_complete = &hif_dummy_grp_done; 315 316 for (j = 0; j < hif_ext_group->numirq; j++) { 317 ret = pfrm_get_irq(&pdev->dev, (struct qdf_pfm_hndl *)pdev, 318 ic_irqname[hif_ext_group->irq[j]], 319 hif_ext_group->irq[j], &irq); 320 if (ret) { 321 dev_err(&pdev->dev, "get irq failed\n"); 322 ret = -EFAULT; 323 goto end; 324 } 325 ic_irqnum[hif_ext_group->irq[j]] = irq; 326 hif_ext_group->os_irq[j] = irq; 327 } 328 329 qdf_spin_lock_irqsave(&hif_ext_group->irq_lock); 330 331 for (j = 0; j < hif_ext_group->numirq; j++) { 332 irq = hif_ext_group->os_irq[j]; 333 irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY); 334 ret = pfrm_request_irq(scn->qdf_dev->dev, 335 irq, hif_ext_group_interrupt_handler, 336 IRQF_TRIGGER_RISING, 337 ic_irqname[hif_ext_group->irq[j]], 338 hif_ext_group); 339 if (ret) { 340 dev_err(&pdev->dev, "ath_request_irq failed\n"); 341 ret = -EFAULT; 342 goto end; 343 } 344 } 345 qdf_spin_unlock_irqrestore(&hif_ext_group->irq_lock); 346 347 qdf_spin_lock_irqsave(&hif_ext_group->irq_lock); 348 hif_ext_group->irq_requested = true; 349 350 end: 351 qdf_spin_unlock_irqrestore(&hif_ext_group->irq_lock); 352 return ret; 353 } 354 355 void hif_ahb_deconfigure_grp_irq(struct hif_softc *scn) 356 { 357 struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(scn); 358 struct hif_exec_context *hif_ext_group; 359 int i, j; 360 int irq = 0; 361 362 /* configure external interrupts */ 363 for (i = 0; i < hif_state->hif_num_extgroup; i++) { 364 hif_ext_group = hif_state->hif_ext_group[i]; 365 if (hif_ext_group->irq_requested == true) { 366 qdf_spin_lock_irqsave(&hif_ext_group->irq_lock); 367 hif_ext_group->irq_requested = false; 368 for (j = 0; j < hif_ext_group->numirq; j++) { 369 irq = hif_ext_group->os_irq[j]; 370 hif_ext_group->irq_enabled = false; 371 irq_clear_status_flags(irq, 372 IRQ_DISABLE_UNLAZY); 373 } 374 qdf_spin_unlock_irqrestore(&hif_ext_group->irq_lock); 375 376 /* Avoid holding the irq_lock while freeing the irq 377 * as the same lock is being held by the irq handler 378 * while disabling the irq. This causes a deadlock 379 * between free_irq and irq_handler. 380 */ 381 for (j = 0; j < hif_ext_group->numirq; j++) { 382 irq = hif_ext_group->os_irq[j]; 383 pfrm_free_irq(scn->qdf_dev->dev, 384 irq, hif_ext_group); 385 } 386 } 387 } 388 } 389 390 irqreturn_t hif_ahb_interrupt_handler(int irq, void *context) 391 { 392 struct ce_tasklet_entry *tasklet_entry = context; 393 return ce_dispatch_interrupt(tasklet_entry->ce_id, tasklet_entry); 394 } 395 396 /** 397 * hif_target_sync() : ensure the target is ready 398 * @scn: hif control structure 399 * 400 * Informs fw that we plan to use legacy interupts so that 401 * it can begin booting. Ensures that the fw finishes booting 402 * before continuing. Should be called before trying to write 403 * to the targets other registers for the first time. 404 * 405 * Return: none 406 */ 407 int hif_target_sync_ahb(struct hif_softc *scn) 408 { 409 int val = 0; 410 int limit = 0; 411 412 while (limit < 50) { 413 hif_write32_mb(scn, scn->mem + 414 (SOC_CORE_BASE_ADDRESS | PCIE_INTR_ENABLE_ADDRESS), 415 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); 416 qdf_mdelay(10); 417 val = hif_read32_mb(scn, scn->mem + 418 (SOC_CORE_BASE_ADDRESS | PCIE_INTR_ENABLE_ADDRESS)); 419 if (val == 0) 420 break; 421 limit++; 422 } 423 hif_write32_mb(scn, scn->mem + 424 (SOC_CORE_BASE_ADDRESS | PCIE_INTR_ENABLE_ADDRESS), 425 PCIE_INTR_FIRMWARE_MASK | PCIE_INTR_CE_MASK_ALL); 426 hif_write32_mb(scn, scn->mem + FW_INDICATOR_ADDRESS, FW_IND_HOST_READY); 427 if (HAS_FW_INDICATOR) { 428 int wait_limit = 500; 429 int fw_ind = 0; 430 431 while (1) { 432 fw_ind = hif_read32_mb(scn, scn->mem + 433 FW_INDICATOR_ADDRESS); 434 if (fw_ind & FW_IND_INITIALIZED) 435 break; 436 if (wait_limit-- < 0) 437 break; 438 hif_write32_mb(scn, scn->mem + (SOC_CORE_BASE_ADDRESS | 439 PCIE_INTR_ENABLE_ADDRESS), 440 PCIE_INTR_FIRMWARE_MASK); 441 qdf_mdelay(10); 442 } 443 if (wait_limit < 0) { 444 HIF_TRACE("%s: FW signal timed out", __func__); 445 return -EIO; 446 } 447 HIF_TRACE("%s: Got FW signal, retries = %x", __func__, 448 500-wait_limit); 449 } 450 451 return 0; 452 } 453 454 /** 455 * hif_disable_bus() - Disable the bus 456 * @scn : pointer to the hif context 457 * 458 * This function disables the bus and helds the target in reset state 459 * 460 * Return: none 461 */ 462 void hif_ahb_disable_bus(struct hif_softc *scn) 463 { 464 struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(scn); 465 void __iomem *mem; 466 struct platform_device *pdev = (struct platform_device *)sc->pdev; 467 struct resource *memres = NULL; 468 int mem_pa_size = 0; 469 struct hif_target_info *tgt_info = NULL; 470 struct qdf_vbus_resource *vmres = NULL; 471 QDF_STATUS status; 472 473 tgt_info = &scn->target_info; 474 /*Disable WIFI clock input*/ 475 if (sc->mem) { 476 status = pfrm_platform_get_resource( 477 scn->qdf_dev->dev, 478 (struct qdf_pfm_hndl *)pdev, &vmres, 479 IORESOURCE_MEM, 0); 480 if (QDF_IS_STATUS_ERROR(status)) { 481 HIF_INFO("%s: Failed to get IORESOURCE_MEM\n", 482 __func__); 483 return; 484 } 485 memres = (struct resource *)vmres; 486 if (memres) 487 mem_pa_size = memres->end - memres->start + 1; 488 489 /* Should not be executed on 8074 platform */ 490 if ((tgt_info->target_type != TARGET_TYPE_QCA8074) && 491 (tgt_info->target_type != TARGET_TYPE_QCA8074V2) && 492 (tgt_info->target_type != TARGET_TYPE_QCA6018)) { 493 hif_ahb_clk_enable_disable(&pdev->dev, 0); 494 495 hif_ahb_device_reset(scn); 496 } 497 mem = (void __iomem *)sc->mem; 498 if (mem) { 499 pfrm_devm_iounmap(&pdev->dev, mem); 500 pfrm_devm_release_mem_region(&pdev->dev, scn->mem_pa, 501 mem_pa_size); 502 sc->mem = NULL; 503 } 504 } 505 scn->mem = NULL; 506 } 507 508 /** 509 * hif_enable_bus() - Enable the bus 510 * @dev: dev 511 * @bdev: bus dev 512 * @bid: bus id 513 * @type: bus type 514 * 515 * This function enables the radio bus by enabling necessary 516 * clocks and waits for the target to get ready to proceed futher 517 * 518 * Return: QDF_STATUS 519 */ 520 QDF_STATUS hif_ahb_enable_bus(struct hif_softc *ol_sc, 521 struct device *dev, void *bdev, 522 const struct hif_bus_id *bid, 523 enum hif_enable_type type) 524 { 525 int ret = 0; 526 int hif_type; 527 int target_type; 528 const struct platform_device_id *id = (struct platform_device_id *)bid; 529 struct platform_device *pdev = bdev; 530 struct hif_target_info *tgt_info = NULL; 531 struct resource *memres = NULL; 532 void __iomem *mem = NULL; 533 uint32_t revision_id = 0; 534 struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(ol_sc); 535 QDF_STATUS status; 536 struct qdf_vbus_resource *vmres = NULL; 537 538 sc->pdev = (struct pci_dev *)pdev; 539 sc->dev = &pdev->dev; 540 sc->devid = id->driver_data; 541 542 ret = hif_get_device_type(id->driver_data, revision_id, 543 &hif_type, &target_type); 544 if (ret < 0) { 545 HIF_ERROR("%s: invalid device ret %d id %d revision_id %d", 546 __func__, ret, (int)id->driver_data, revision_id); 547 return QDF_STATUS_E_FAILURE; 548 } 549 550 status = pfrm_platform_get_resource(&pdev->dev, 551 (struct qdf_pfm_hndl *)pdev, 552 &vmres, 553 IORESOURCE_MEM, 0); 554 if (QDF_IS_STATUS_ERROR(status)) { 555 HIF_INFO("%s: Failed to get IORESOURCE_MEM\n", __func__); 556 return -EIO; 557 } 558 memres = (struct resource *)vmres; 559 if (!memres) { 560 HIF_INFO("%s: Failed to get IORESOURCE_MEM\n", __func__); 561 return -EIO; 562 } 563 564 ret = pfrm_dma_set_mask(dev, 32); 565 if (ret) { 566 HIF_INFO("ath: 32-bit DMA not available\n"); 567 goto err_cleanup1; 568 } 569 570 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0) 571 ret = pfrm_dma_set_mask_and_coherent(dev, 32); 572 #else 573 ret = pfrm_dma_set_coherent_mask(dev, 32); 574 #endif 575 if (ret) { 576 HIF_ERROR("%s: failed to set dma mask error = %d", 577 __func__, ret); 578 return ret; 579 } 580 581 /* Arrange for access to Target SoC registers. */ 582 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0) 583 status = pfrm_devm_ioremap_resource(dev, 584 (struct qdf_vbus_resource *)memres, 585 &mem); 586 #else 587 status = pfrm_devm_request_and_ioremap( 588 dev, 589 (struct qdf_vbus_resource *)memres, 590 &mem); 591 #endif 592 if (QDF_IS_STATUS_ERROR(status)) { 593 HIF_INFO("ath: ioremap error\n"); 594 ret = PTR_ERR(mem); 595 goto err_cleanup1; 596 } 597 598 sc->mem = mem; 599 ol_sc->mem = mem; 600 ol_sc->mem_pa = memres->start; 601 602 tgt_info = hif_get_target_info_handle((struct hif_opaque_softc *)ol_sc); 603 604 tgt_info->target_type = target_type; 605 hif_register_tbl_attach(ol_sc, hif_type); 606 hif_target_register_tbl_attach(ol_sc, target_type); 607 608 if ((tgt_info->target_type != TARGET_TYPE_QCA8074) && 609 (tgt_info->target_type != TARGET_TYPE_QCA8074V2) && 610 (tgt_info->target_type != TARGET_TYPE_QCA6018)) { 611 if (hif_ahb_enable_radio(sc, pdev, id) != 0) { 612 HIF_INFO("error in enabling soc\n"); 613 return -EIO; 614 } 615 616 if (hif_target_sync_ahb(ol_sc) < 0) { 617 ret = -EIO; 618 goto err_target_sync; 619 } 620 } 621 HIF_TRACE("%s: X - hif_type = 0x%x, target_type = 0x%x", 622 __func__, hif_type, target_type); 623 624 return QDF_STATUS_SUCCESS; 625 err_target_sync: 626 if ((tgt_info->target_type != TARGET_TYPE_QCA8074) && 627 (tgt_info->target_type != TARGET_TYPE_QCA8074V2) && 628 (tgt_info->target_type != TARGET_TYPE_QCA6018)) { 629 HIF_INFO("Error: Disabling target\n"); 630 hif_ahb_disable_bus(ol_sc); 631 } 632 err_cleanup1: 633 return ret; 634 } 635 636 637 /** 638 * hif_reset_soc() - reset soc 639 * 640 * @hif_ctx: HIF context 641 * 642 * This function resets soc and helds the 643 * target in reset state 644 * 645 * Return: void 646 */ 647 /* Function to reset SoC */ 648 void hif_ahb_reset_soc(struct hif_softc *hif_ctx) 649 { 650 hif_ahb_device_reset(hif_ctx); 651 } 652 653 654 /** 655 * hif_nointrs() - disable IRQ 656 * 657 * @scn: struct hif_softc 658 * 659 * This function stops interrupt(s) 660 * 661 * Return: none 662 */ 663 void hif_ahb_nointrs(struct hif_softc *scn) 664 { 665 int i; 666 struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(scn); 667 struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(scn); 668 struct CE_attr *host_ce_conf = hif_state->host_ce_config; 669 670 ce_unregister_irq(hif_state, CE_ALL_BITMAP); 671 672 if (scn->request_irq_done == false) 673 return; 674 675 if (sc->num_msi_intrs > 0) { 676 /* MSI interrupt(s) */ 677 for (i = 0; i < sc->num_msi_intrs; i++) { 678 pfrm_free_irq(scn->qdf_dev->dev, sc->irq + i, sc); 679 } 680 sc->num_msi_intrs = 0; 681 } else { 682 if (!scn->per_ce_irq) { 683 pfrm_free_irq(scn->qdf_dev->dev, sc->irq, sc); 684 } else { 685 for (i = 0; i < scn->ce_count; i++) { 686 if (host_ce_conf[i].flags 687 & CE_ATTR_DISABLE_INTR) 688 continue; 689 690 pfrm_free_irq( 691 scn->qdf_dev->dev, 692 ic_irqnum[HIF_IC_CE0_IRQ_OFFSET + i], 693 &hif_state->tasklets[i]); 694 } 695 hif_ahb_deconfigure_grp_irq(scn); 696 } 697 } 698 scn->request_irq_done = false; 699 700 } 701 702 /** 703 * ce_irq_enable() - enable copy engine IRQ 704 * @scn: struct hif_softc 705 * @ce_id: ce_id 706 * 707 * This function enables the interrupt for the radio. 708 * 709 * Return: N/A 710 */ 711 void hif_ahb_irq_enable(struct hif_softc *scn, int ce_id) 712 { 713 uint32_t regval; 714 uint32_t reg_offset = 0; 715 struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(scn); 716 struct CE_pipe_config *target_ce_conf = &hif_state->target_ce_config[ce_id]; 717 struct hif_target_info *tgt_info = &scn->target_info; 718 719 if (scn->per_ce_irq) { 720 if (target_ce_conf->pipedir & PIPEDIR_OUT) { 721 reg_offset = HOST_IE_ADDRESS; 722 qdf_spin_lock_irqsave(&hif_state->irq_reg_lock); 723 regval = hif_read32_mb(scn, scn->mem + reg_offset); 724 regval |= HOST_IE_REG1_CE_BIT(ce_id); 725 hif_write32_mb(scn, scn->mem + reg_offset, regval); 726 qdf_spin_unlock_irqrestore(&hif_state->irq_reg_lock); 727 } 728 if (target_ce_conf->pipedir & PIPEDIR_IN) { 729 reg_offset = HOST_IE_ADDRESS_2; 730 qdf_spin_lock_irqsave(&hif_state->irq_reg_lock); 731 regval = hif_read32_mb(scn, scn->mem + reg_offset); 732 regval |= HOST_IE_REG2_CE_BIT(ce_id); 733 hif_write32_mb(scn, scn->mem + reg_offset, regval); 734 if (tgt_info->target_type == TARGET_TYPE_QCA8074 || 735 tgt_info->target_type == TARGET_TYPE_QCA8074V2 || 736 tgt_info->target_type == TARGET_TYPE_QCA6018) { 737 /* Enable destination ring interrupts for 738 * 8074, 8074V2 and 6018 739 */ 740 regval = hif_read32_mb(scn, scn->mem + 741 HOST_IE_ADDRESS_3); 742 regval |= HOST_IE_REG3_CE_BIT(ce_id); 743 744 hif_write32_mb(scn, scn->mem + 745 HOST_IE_ADDRESS_3, regval); 746 } 747 qdf_spin_unlock_irqrestore(&hif_state->irq_reg_lock); 748 } 749 } else { 750 hif_pci_irq_enable(scn, ce_id); 751 } 752 } 753 754 /** 755 * ce_irq_disable() - disable copy engine IRQ 756 * @scn: struct hif_softc 757 * @ce_id: ce_id 758 * 759 * Return: N/A 760 */ 761 void hif_ahb_irq_disable(struct hif_softc *scn, int ce_id) 762 { 763 uint32_t regval; 764 uint32_t reg_offset = 0; 765 struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(scn); 766 struct CE_pipe_config *target_ce_conf = &hif_state->target_ce_config[ce_id]; 767 struct hif_target_info *tgt_info = &scn->target_info; 768 769 if (scn->per_ce_irq) { 770 if (target_ce_conf->pipedir & PIPEDIR_OUT) { 771 reg_offset = HOST_IE_ADDRESS; 772 qdf_spin_lock_irqsave(&hif_state->irq_reg_lock); 773 regval = hif_read32_mb(scn, scn->mem + reg_offset); 774 regval &= ~HOST_IE_REG1_CE_BIT(ce_id); 775 hif_write32_mb(scn, scn->mem + reg_offset, regval); 776 qdf_spin_unlock_irqrestore(&hif_state->irq_reg_lock); 777 } 778 if (target_ce_conf->pipedir & PIPEDIR_IN) { 779 reg_offset = HOST_IE_ADDRESS_2; 780 qdf_spin_lock_irqsave(&hif_state->irq_reg_lock); 781 regval = hif_read32_mb(scn, scn->mem + reg_offset); 782 regval &= ~HOST_IE_REG2_CE_BIT(ce_id); 783 hif_write32_mb(scn, scn->mem + reg_offset, regval); 784 if (tgt_info->target_type == TARGET_TYPE_QCA8074 || 785 tgt_info->target_type == TARGET_TYPE_QCA8074V2 || 786 tgt_info->target_type == TARGET_TYPE_QCA6018) { 787 /* Disable destination ring interrupts for 788 * 8074, 8074V2 and 6018 789 */ 790 regval = hif_read32_mb(scn, scn->mem + 791 HOST_IE_ADDRESS_3); 792 regval &= ~HOST_IE_REG3_CE_BIT(ce_id); 793 794 hif_write32_mb(scn, scn->mem + 795 HOST_IE_ADDRESS_3, regval); 796 } 797 qdf_spin_unlock_irqrestore(&hif_state->irq_reg_lock); 798 } 799 } 800 } 801 802 void hif_ahb_exec_grp_irq_disable(struct hif_exec_context *hif_ext_group) 803 { 804 int i; 805 806 qdf_spin_lock_irqsave(&hif_ext_group->irq_lock); 807 if (hif_ext_group->irq_enabled) { 808 for (i = 0; i < hif_ext_group->numirq; i++) { 809 disable_irq_nosync(hif_ext_group->os_irq[i]); 810 } 811 hif_ext_group->irq_enabled = false; 812 } 813 qdf_spin_unlock_irqrestore(&hif_ext_group->irq_lock); 814 } 815 816 void hif_ahb_exec_grp_irq_enable(struct hif_exec_context *hif_ext_group) 817 { 818 int i; 819 820 qdf_spin_lock_irqsave(&hif_ext_group->irq_lock); 821 if (hif_ext_group->irq_requested && !hif_ext_group->irq_enabled) { 822 for (i = 0; i < hif_ext_group->numirq; i++) { 823 enable_irq(hif_ext_group->os_irq[i]); 824 } 825 hif_ext_group->irq_enabled = true; 826 } 827 qdf_spin_unlock_irqrestore(&hif_ext_group->irq_lock); 828 } 829 830 /** 831 * hif_ahb_needs_bmi() - return true if the soc needs bmi through the driver 832 * @scn: hif context 833 * 834 * Return: true if soc needs driver bmi otherwise false 835 */ 836 bool hif_ahb_needs_bmi(struct hif_softc *scn) 837 { 838 return !ce_srng_based(scn); 839 } 840 841 void hif_ahb_display_stats(struct hif_softc *scn) 842 { 843 if (!scn) { 844 HIF_ERROR("%s, hif_scn null", __func__); 845 return; 846 } 847 hif_display_ce_stats(scn); 848 } 849 850 void hif_ahb_clear_stats(struct hif_softc *scn) 851 { 852 struct HIF_CE_state *hif_state = HIF_GET_CE_STATE(scn); 853 854 if (!hif_state) { 855 HIF_ERROR("%s, hif_state null", __func__); 856 return; 857 } 858 hif_clear_ce_stats(hif_state); 859 } 860