1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com> 9 // Ranjani Sridharan <ranjani.sridharan@linux.intel.com> 10 // Rander Wang <rander.wang@intel.com> 11 // Keyon Jie <yang.jie@linux.intel.com> 12 // 13 14 /* 15 * Hardware interface for HDA DSP code loader 16 */ 17 18 #include <linux/firmware.h> 19 #include <sound/hdaudio_ext.h> 20 #include <sound/hda_register.h> 21 #include <sound/sof.h> 22 #include "ext_manifest.h" 23 #include "../ops.h" 24 #include "hda.h" 25 26 #define HDA_FW_BOOT_ATTEMPTS 3 27 #define HDA_CL_STREAM_FORMAT 0x40 28 29 static struct hdac_ext_stream *cl_stream_prepare(struct snd_sof_dev *sdev, unsigned int format, 30 unsigned int size, struct snd_dma_buffer *dmab, 31 int direction) 32 { 33 struct hdac_ext_stream *dsp_stream; 34 struct hdac_stream *hstream; 35 struct pci_dev *pci = to_pci_dev(sdev->dev); 36 int ret; 37 38 dsp_stream = hda_dsp_stream_get(sdev, direction, 0); 39 40 if (!dsp_stream) { 41 dev_err(sdev->dev, "error: no stream available\n"); 42 return ERR_PTR(-ENODEV); 43 } 44 hstream = &dsp_stream->hstream; 45 hstream->substream = NULL; 46 47 /* allocate DMA buffer */ 48 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, &pci->dev, size, dmab); 49 if (ret < 0) { 50 dev_err(sdev->dev, "error: memory alloc failed: %d\n", ret); 51 goto error; 52 } 53 54 hstream->period_bytes = 0;/* initialize period_bytes */ 55 hstream->format_val = format; 56 hstream->bufsize = size; 57 58 if (direction == SNDRV_PCM_STREAM_CAPTURE) { 59 ret = hda_dsp_iccmax_stream_hw_params(sdev, dsp_stream, dmab, NULL); 60 if (ret < 0) { 61 dev_err(sdev->dev, "error: iccmax stream prepare failed: %d\n", ret); 62 goto error; 63 } 64 } else { 65 ret = hda_dsp_stream_hw_params(sdev, dsp_stream, dmab, NULL); 66 if (ret < 0) { 67 dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret); 68 goto error; 69 } 70 hda_dsp_stream_spib_config(sdev, dsp_stream, HDA_DSP_SPIB_ENABLE, size); 71 } 72 73 return dsp_stream; 74 75 error: 76 hda_dsp_stream_put(sdev, direction, hstream->stream_tag); 77 snd_dma_free_pages(dmab); 78 return ERR_PTR(ret); 79 } 80 81 /* 82 * first boot sequence has some extra steps. core 0 waits for power 83 * status on core 1, so power up core 1 also momentarily, keep it in 84 * reset/stall and then turn it off 85 */ 86 static int cl_dsp_init(struct snd_sof_dev *sdev, int stream_tag) 87 { 88 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 89 const struct sof_intel_dsp_desc *chip = hda->desc; 90 unsigned int status; 91 u32 flags; 92 int ret; 93 int i; 94 95 /* step 1: power up corex */ 96 ret = snd_sof_dsp_core_power_up(sdev, chip->host_managed_cores_mask); 97 if (ret < 0) { 98 if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) 99 dev_err(sdev->dev, "error: dsp core 0/1 power up failed\n"); 100 goto err; 101 } 102 103 /* DSP is powered up, set all SSPs to slave mode */ 104 for (i = 0; i < chip->ssp_count; i++) { 105 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 106 chip->ssp_base_offset 107 + i * SSP_DEV_MEM_SIZE 108 + SSP_SSC1_OFFSET, 109 SSP_SET_SLAVE, 110 SSP_SET_SLAVE); 111 } 112 113 /* step 2: purge FW request */ 114 snd_sof_dsp_write(sdev, HDA_DSP_BAR, chip->ipc_req, 115 chip->ipc_req_mask | (HDA_DSP_IPC_PURGE_FW | 116 ((stream_tag - 1) << 9))); 117 118 /* step 3: unset core 0 reset state & unstall/run core 0 */ 119 ret = hda_dsp_core_run(sdev, BIT(0)); 120 if (ret < 0) { 121 if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) 122 dev_err(sdev->dev, 123 "error: dsp core start failed %d\n", ret); 124 ret = -EIO; 125 goto err; 126 } 127 128 /* step 4: wait for IPC DONE bit from ROM */ 129 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 130 chip->ipc_ack, status, 131 ((status & chip->ipc_ack_mask) 132 == chip->ipc_ack_mask), 133 HDA_DSP_REG_POLL_INTERVAL_US, 134 HDA_DSP_INIT_TIMEOUT_US); 135 136 if (ret < 0) { 137 if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) 138 dev_err(sdev->dev, 139 "error: %s: timeout for HIPCIE done\n", 140 __func__); 141 goto err; 142 } 143 144 /* set DONE bit to clear the reply IPC message */ 145 snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR, 146 chip->ipc_ack, 147 chip->ipc_ack_mask, 148 chip->ipc_ack_mask); 149 150 /* step 5: power down cores that are no longer needed */ 151 ret = snd_sof_dsp_core_power_down(sdev, chip->host_managed_cores_mask & 152 ~(chip->init_core_mask)); 153 if (ret < 0) { 154 if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) 155 dev_err(sdev->dev, 156 "error: dsp core x power down failed\n"); 157 goto err; 158 } 159 160 /* step 6: enable IPC interrupts */ 161 hda_dsp_ipc_int_enable(sdev); 162 163 /* step 7: wait for ROM init */ 164 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 165 HDA_DSP_SRAM_REG_ROM_STATUS, status, 166 ((status & HDA_DSP_ROM_STS_MASK) 167 == HDA_DSP_ROM_INIT), 168 HDA_DSP_REG_POLL_INTERVAL_US, 169 chip->rom_init_timeout * 170 USEC_PER_MSEC); 171 if (!ret) 172 return 0; 173 174 if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) 175 dev_err(sdev->dev, 176 "error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n", 177 __func__); 178 179 err: 180 flags = SOF_DBG_DUMP_REGS | SOF_DBG_DUMP_PCI | SOF_DBG_DUMP_MBOX; 181 182 /* force error log level after max boot attempts */ 183 if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) 184 flags |= SOF_DBG_DUMP_FORCE_ERR_LEVEL; 185 186 hda_dsp_dump(sdev, flags); 187 snd_sof_dsp_core_power_down(sdev, chip->host_managed_cores_mask); 188 189 return ret; 190 } 191 192 static int cl_trigger(struct snd_sof_dev *sdev, 193 struct hdac_ext_stream *stream, int cmd) 194 { 195 struct hdac_stream *hstream = &stream->hstream; 196 int sd_offset = SOF_STREAM_SD_OFFSET(hstream); 197 198 /* code loader is special case that reuses stream ops */ 199 switch (cmd) { 200 case SNDRV_PCM_TRIGGER_START: 201 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL, 202 1 << hstream->index, 203 1 << hstream->index); 204 205 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, 206 sd_offset, 207 SOF_HDA_SD_CTL_DMA_START | 208 SOF_HDA_CL_DMA_SD_INT_MASK, 209 SOF_HDA_SD_CTL_DMA_START | 210 SOF_HDA_CL_DMA_SD_INT_MASK); 211 212 hstream->running = true; 213 return 0; 214 default: 215 return hda_dsp_stream_trigger(sdev, stream, cmd); 216 } 217 } 218 219 static int cl_cleanup(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab, 220 struct hdac_ext_stream *stream) 221 { 222 struct hdac_stream *hstream = &stream->hstream; 223 int sd_offset = SOF_STREAM_SD_OFFSET(hstream); 224 int ret = 0; 225 226 if (hstream->direction == SNDRV_PCM_STREAM_PLAYBACK) 227 ret = hda_dsp_stream_spib_config(sdev, stream, HDA_DSP_SPIB_DISABLE, 0); 228 else 229 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset, 230 SOF_HDA_SD_CTL_DMA_START, 0); 231 232 hda_dsp_stream_put(sdev, hstream->direction, hstream->stream_tag); 233 hstream->running = 0; 234 hstream->substream = NULL; 235 236 /* reset BDL address */ 237 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, 238 sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL, 0); 239 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, 240 sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU, 0); 241 242 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, sd_offset, 0); 243 snd_dma_free_pages(dmab); 244 dmab->area = NULL; 245 hstream->bufsize = 0; 246 hstream->format_val = 0; 247 248 return ret; 249 } 250 251 static int cl_copy_fw(struct snd_sof_dev *sdev, struct hdac_ext_stream *stream) 252 { 253 unsigned int reg; 254 int ret, status; 255 256 ret = cl_trigger(sdev, stream, SNDRV_PCM_TRIGGER_START); 257 if (ret < 0) { 258 dev_err(sdev->dev, "error: DMA trigger start failed\n"); 259 return ret; 260 } 261 262 status = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 263 HDA_DSP_SRAM_REG_ROM_STATUS, reg, 264 ((reg & HDA_DSP_ROM_STS_MASK) 265 == HDA_DSP_ROM_FW_ENTERED), 266 HDA_DSP_REG_POLL_INTERVAL_US, 267 HDA_DSP_BASEFW_TIMEOUT_US); 268 269 /* 270 * even in case of errors we still need to stop the DMAs, 271 * but we return the initial error should the DMA stop also fail 272 */ 273 274 if (status < 0) { 275 dev_err(sdev->dev, 276 "error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n", 277 __func__); 278 } 279 280 ret = cl_trigger(sdev, stream, SNDRV_PCM_TRIGGER_STOP); 281 if (ret < 0) { 282 dev_err(sdev->dev, "error: DMA trigger stop failed\n"); 283 if (!status) 284 status = ret; 285 } 286 287 return status; 288 } 289 290 int hda_dsp_cl_boot_firmware_iccmax(struct snd_sof_dev *sdev) 291 { 292 struct snd_sof_pdata *plat_data = sdev->pdata; 293 struct hdac_ext_stream *iccmax_stream; 294 struct hdac_bus *bus = sof_to_bus(sdev); 295 struct firmware stripped_firmware; 296 int ret, ret1; 297 u8 original_gb; 298 299 /* save the original LTRP guardband value */ 300 original_gb = snd_hdac_chip_readb(bus, VS_LTRP) & HDA_VS_INTEL_LTRP_GB_MASK; 301 302 if (plat_data->fw->size <= plat_data->fw_offset) { 303 dev_err(sdev->dev, "error: firmware size must be greater than firmware offset\n"); 304 return -EINVAL; 305 } 306 307 stripped_firmware.size = plat_data->fw->size - plat_data->fw_offset; 308 309 /* prepare capture stream for ICCMAX */ 310 iccmax_stream = cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, stripped_firmware.size, 311 &sdev->dmab_bdl, SNDRV_PCM_STREAM_CAPTURE); 312 if (IS_ERR(iccmax_stream)) { 313 dev_err(sdev->dev, "error: dma prepare for ICCMAX stream failed\n"); 314 return PTR_ERR(iccmax_stream); 315 } 316 317 ret = hda_dsp_cl_boot_firmware(sdev); 318 319 /* 320 * Perform iccmax stream cleanup. This should be done even if firmware loading fails. 321 * If the cleanup also fails, we return the initial error 322 */ 323 ret1 = cl_cleanup(sdev, &sdev->dmab_bdl, iccmax_stream); 324 if (ret1 < 0) { 325 dev_err(sdev->dev, "error: ICCMAX stream cleanup failed\n"); 326 327 /* set return value to indicate cleanup failure */ 328 if (!ret) 329 ret = ret1; 330 } 331 332 /* restore the original guardband value after FW boot */ 333 snd_hdac_chip_updateb(bus, VS_LTRP, HDA_VS_INTEL_LTRP_GB_MASK, original_gb); 334 335 return ret; 336 } 337 338 int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev) 339 { 340 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 341 struct snd_sof_pdata *plat_data = sdev->pdata; 342 const struct sof_dev_desc *desc = plat_data->desc; 343 const struct sof_intel_dsp_desc *chip_info; 344 struct hdac_ext_stream *stream; 345 struct firmware stripped_firmware; 346 int ret, ret1, i; 347 348 chip_info = desc->chip_info; 349 350 if (plat_data->fw->size <= plat_data->fw_offset) { 351 dev_err(sdev->dev, "error: firmware size must be greater than firmware offset\n"); 352 return -EINVAL; 353 } 354 355 stripped_firmware.data = plat_data->fw->data + plat_data->fw_offset; 356 stripped_firmware.size = plat_data->fw->size - plat_data->fw_offset; 357 358 /* init for booting wait */ 359 init_waitqueue_head(&sdev->boot_wait); 360 361 /* prepare DMA for code loader stream */ 362 stream = cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, stripped_firmware.size, 363 &sdev->dmab, SNDRV_PCM_STREAM_PLAYBACK); 364 if (IS_ERR(stream)) { 365 dev_err(sdev->dev, "error: dma prepare for fw loading failed\n"); 366 return PTR_ERR(stream); 367 } 368 369 memcpy(sdev->dmab.area, stripped_firmware.data, 370 stripped_firmware.size); 371 372 /* try ROM init a few times before giving up */ 373 for (i = 0; i < HDA_FW_BOOT_ATTEMPTS; i++) { 374 dev_dbg(sdev->dev, 375 "Attempting iteration %d of Core En/ROM load...\n", i); 376 377 hda->boot_iteration = i + 1; 378 ret = cl_dsp_init(sdev, stream->hstream.stream_tag); 379 380 /* don't retry anymore if successful */ 381 if (!ret) 382 break; 383 } 384 385 if (i == HDA_FW_BOOT_ATTEMPTS) { 386 dev_err(sdev->dev, "error: dsp init failed after %d attempts with err: %d\n", 387 i, ret); 388 goto cleanup; 389 } 390 391 /* 392 * When a SoundWire link is in clock stop state, a Slave 393 * device may trigger in-band wakes for events such as jack 394 * insertion or acoustic event detection. This event will lead 395 * to a WAKEEN interrupt, handled by the PCI device and routed 396 * to PME if the PCI device is in D3. The resume function in 397 * audio PCI driver will be invoked by ACPI for PME event and 398 * initialize the device and process WAKEEN interrupt. 399 * 400 * The WAKEEN interrupt should be processed ASAP to prevent an 401 * interrupt flood, otherwise other interrupts, such IPC, 402 * cannot work normally. The WAKEEN is handled after the ROM 403 * is initialized successfully, which ensures power rails are 404 * enabled before accessing the SoundWire SHIM registers 405 */ 406 if (!sdev->first_boot) 407 hda_sdw_process_wakeen(sdev); 408 409 /* 410 * at this point DSP ROM has been initialized and 411 * should be ready for code loading and firmware boot 412 */ 413 ret = cl_copy_fw(sdev, stream); 414 if (!ret) { 415 dev_dbg(sdev->dev, "Firmware download successful, booting...\n"); 416 } else { 417 hda_dsp_dump(sdev, SOF_DBG_DUMP_REGS | SOF_DBG_DUMP_PCI | SOF_DBG_DUMP_MBOX | 418 SOF_DBG_DUMP_FORCE_ERR_LEVEL); 419 dev_err(sdev->dev, "error: load fw failed ret: %d\n", ret); 420 } 421 422 cleanup: 423 /* 424 * Perform codeloader stream cleanup. 425 * This should be done even if firmware loading fails. 426 * If the cleanup also fails, we return the initial error 427 */ 428 ret1 = cl_cleanup(sdev, &sdev->dmab, stream); 429 if (ret1 < 0) { 430 dev_err(sdev->dev, "error: Code loader DSP cleanup failed\n"); 431 432 /* set return value to indicate cleanup failure */ 433 if (!ret) 434 ret = ret1; 435 } 436 437 /* 438 * return primary core id if both fw copy 439 * and stream clean up are successful 440 */ 441 if (!ret) 442 return chip_info->init_core_mask; 443 444 /* disable DSP */ 445 snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, 446 SOF_HDA_REG_PP_PPCTL, 447 SOF_HDA_PPCTL_GPROCEN, 0); 448 return ret; 449 } 450 451 /* pre fw run operations */ 452 int hda_dsp_pre_fw_run(struct snd_sof_dev *sdev) 453 { 454 /* disable clock gating and power gating */ 455 return hda_dsp_ctrl_clock_power_gating(sdev, false); 456 } 457 458 /* post fw run operations */ 459 int hda_dsp_post_fw_run(struct snd_sof_dev *sdev) 460 { 461 int ret; 462 463 if (sdev->first_boot) { 464 ret = hda_sdw_startup(sdev); 465 if (ret < 0) { 466 dev_err(sdev->dev, 467 "error: could not startup SoundWire links\n"); 468 return ret; 469 } 470 } 471 472 hda_sdw_int_enable(sdev, true); 473 474 /* re-enable clock gating and power gating */ 475 return hda_dsp_ctrl_clock_power_gating(sdev, true); 476 } 477 478 /* 479 * post fw run operations for ICL, 480 * Core 3 will be powered up and in stall when HPRO is enabled 481 */ 482 int hda_dsp_post_fw_run_icl(struct snd_sof_dev *sdev) 483 { 484 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 485 int ret; 486 487 if (sdev->first_boot) { 488 ret = hda_sdw_startup(sdev); 489 if (ret < 0) { 490 dev_err(sdev->dev, 491 "error: could not startup SoundWire links\n"); 492 return ret; 493 } 494 } 495 496 hda_sdw_int_enable(sdev, true); 497 498 /* 499 * The recommended HW programming sequence for ICL is to 500 * power up core 3 and keep it in stall if HPRO is enabled. 501 * Major difference between ICL and TGL, on ICL core 3 is managed by 502 * the host whereas on TGL it is handled by the firmware. 503 */ 504 if (!hda->clk_config_lpro) { 505 ret = snd_sof_dsp_core_power_up(sdev, BIT(3)); 506 if (ret < 0) { 507 dev_err(sdev->dev, "error: dsp core power up failed on core 3\n"); 508 return ret; 509 } 510 511 snd_sof_dsp_stall(sdev, BIT(3)); 512 } 513 514 /* re-enable clock gating and power gating */ 515 return hda_dsp_ctrl_clock_power_gating(sdev, true); 516 } 517 518 int hda_dsp_ext_man_get_cavs_config_data(struct snd_sof_dev *sdev, 519 const struct sof_ext_man_elem_header *hdr) 520 { 521 const struct sof_ext_man_cavs_config_data *config_data = 522 container_of(hdr, struct sof_ext_man_cavs_config_data, hdr); 523 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 524 int i, elem_num; 525 526 /* calculate total number of config data elements */ 527 elem_num = (hdr->size - sizeof(struct sof_ext_man_elem_header)) 528 / sizeof(struct sof_config_elem); 529 if (elem_num <= 0) { 530 dev_err(sdev->dev, "cavs config data is inconsistent: %d\n", elem_num); 531 return -EINVAL; 532 } 533 534 for (i = 0; i < elem_num; i++) 535 switch (config_data->elems[i].token) { 536 case SOF_EXT_MAN_CAVS_CONFIG_EMPTY: 537 /* skip empty token */ 538 break; 539 case SOF_EXT_MAN_CAVS_CONFIG_CAVS_LPRO: 540 hda->clk_config_lpro = config_data->elems[i].value; 541 dev_dbg(sdev->dev, "FW clock config: %s\n", 542 hda->clk_config_lpro ? "LPRO" : "HPRO"); 543 break; 544 case SOF_EXT_MAN_CAVS_CONFIG_OUTBOX_SIZE: 545 case SOF_EXT_MAN_CAVS_CONFIG_INBOX_SIZE: 546 /* These elements are defined but not being used yet. No warn is required */ 547 break; 548 default: 549 dev_info(sdev->dev, "unsupported token type: %d\n", 550 config_data->elems[i].token); 551 } 552 553 return 0; 554 } 555 556 int hda_dsp_core_stall_icl(struct snd_sof_dev *sdev, unsigned int core_mask) 557 { 558 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 559 const struct sof_intel_dsp_desc *chip = hda->desc; 560 561 /* make sure core_mask in host managed cores */ 562 core_mask &= chip->host_managed_cores_mask; 563 if (!core_mask) { 564 dev_err(sdev->dev, "error: core_mask is not in host managed cores\n"); 565 return -EINVAL; 566 } 567 568 /* stall core */ 569 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 570 HDA_DSP_REG_ADSPCS, 571 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask), 572 HDA_DSP_ADSPCS_CSTALL_MASK(core_mask)); 573 574 return 0; 575 } 576