1 // SPDX-License-Identifier: (GPL-2.0 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/sof.h> 21 #include "../ops.h" 22 #include "hda.h" 23 24 #define HDA_FW_BOOT_ATTEMPTS 3 25 26 static int cl_stream_prepare(struct snd_sof_dev *sdev, unsigned int format, 27 unsigned int size, struct snd_dma_buffer *dmab, 28 int direction) 29 { 30 struct hdac_ext_stream *dsp_stream; 31 struct hdac_stream *hstream; 32 struct pci_dev *pci = to_pci_dev(sdev->dev); 33 int ret; 34 35 if (direction != SNDRV_PCM_STREAM_PLAYBACK) { 36 dev_err(sdev->dev, "error: code loading DMA is playback only\n"); 37 return -EINVAL; 38 } 39 40 dsp_stream = hda_dsp_stream_get(sdev, direction); 41 42 if (!dsp_stream) { 43 dev_err(sdev->dev, "error: no stream available\n"); 44 return -ENODEV; 45 } 46 hstream = &dsp_stream->hstream; 47 hstream->substream = NULL; 48 49 /* allocate DMA buffer */ 50 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, &pci->dev, size, dmab); 51 if (ret < 0) { 52 dev_err(sdev->dev, "error: memory alloc failed: %x\n", ret); 53 goto error; 54 } 55 56 hstream->period_bytes = 0;/* initialize period_bytes */ 57 hstream->format_val = format; 58 hstream->bufsize = size; 59 60 ret = hda_dsp_stream_hw_params(sdev, dsp_stream, dmab, NULL); 61 if (ret < 0) { 62 dev_err(sdev->dev, "error: hdac prepare failed: %x\n", ret); 63 goto error; 64 } 65 66 hda_dsp_stream_spib_config(sdev, dsp_stream, HDA_DSP_SPIB_ENABLE, size); 67 68 return hstream->stream_tag; 69 70 error: 71 hda_dsp_stream_put(sdev, direction, hstream->stream_tag); 72 snd_dma_free_pages(dmab); 73 return ret; 74 } 75 76 /* 77 * first boot sequence has some extra steps. core 0 waits for power 78 * status on core 1, so power up core 1 also momentarily, keep it in 79 * reset/stall and then turn it off 80 */ 81 static int cl_dsp_init(struct snd_sof_dev *sdev, const void *fwdata, 82 u32 fwsize, int stream_tag) 83 { 84 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 85 const struct sof_intel_dsp_desc *chip = hda->desc; 86 unsigned int status; 87 int ret; 88 int i; 89 90 /* step 1: power up corex */ 91 ret = hda_dsp_core_power_up(sdev, chip->cores_mask); 92 if (ret < 0) { 93 dev_err(sdev->dev, "error: dsp core 0/1 power up failed\n"); 94 goto err; 95 } 96 97 /* DSP is powered up, set all SSPs to slave mode */ 98 for (i = 0; i < chip->ssp_count; i++) { 99 snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, 100 chip->ssp_base_offset 101 + i * SSP_DEV_MEM_SIZE 102 + SSP_SSC1_OFFSET, 103 SSP_SET_SLAVE, 104 SSP_SET_SLAVE); 105 } 106 107 /* step 2: purge FW request */ 108 snd_sof_dsp_write(sdev, HDA_DSP_BAR, chip->ipc_req, 109 chip->ipc_req_mask | (HDA_DSP_IPC_PURGE_FW | 110 ((stream_tag - 1) << 9))); 111 112 /* step 3: unset core 0 reset state & unstall/run core 0 */ 113 ret = hda_dsp_core_run(sdev, HDA_DSP_CORE_MASK(0)); 114 if (ret < 0) { 115 dev_err(sdev->dev, "error: dsp core start failed %d\n", ret); 116 ret = -EIO; 117 goto err; 118 } 119 120 /* step 4: wait for IPC DONE bit from ROM */ 121 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 122 chip->ipc_ack, status, 123 ((status & chip->ipc_ack_mask) 124 == chip->ipc_ack_mask), 125 HDA_DSP_REG_POLL_INTERVAL_US, 126 HDA_DSP_INIT_TIMEOUT_US); 127 128 if (ret < 0) { 129 dev_err(sdev->dev, "error: %s: timeout for HIPCIE done\n", 130 __func__); 131 goto err; 132 } 133 134 /* step 5: power down corex */ 135 ret = hda_dsp_core_power_down(sdev, 136 chip->cores_mask & ~(HDA_DSP_CORE_MASK(0))); 137 if (ret < 0) { 138 dev_err(sdev->dev, "error: dsp core x power down failed\n"); 139 goto err; 140 } 141 142 /* step 6: enable IPC interrupts */ 143 hda_dsp_ipc_int_enable(sdev); 144 145 /* step 7: wait for ROM init */ 146 ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 147 HDA_DSP_SRAM_REG_ROM_STATUS, status, 148 ((status & HDA_DSP_ROM_STS_MASK) 149 == HDA_DSP_ROM_INIT), 150 HDA_DSP_REG_POLL_INTERVAL_US, 151 chip->rom_init_timeout * 152 USEC_PER_MSEC); 153 if (!ret) 154 return 0; 155 156 dev_err(sdev->dev, 157 "error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n", 158 __func__); 159 160 err: 161 hda_dsp_dump(sdev, SOF_DBG_REGS | SOF_DBG_PCI | SOF_DBG_MBOX); 162 hda_dsp_core_reset_power_down(sdev, chip->cores_mask); 163 164 return ret; 165 } 166 167 static int cl_trigger(struct snd_sof_dev *sdev, 168 struct hdac_ext_stream *stream, int cmd) 169 { 170 struct hdac_stream *hstream = &stream->hstream; 171 int sd_offset = SOF_STREAM_SD_OFFSET(hstream); 172 173 /* code loader is special case that reuses stream ops */ 174 switch (cmd) { 175 case SNDRV_PCM_TRIGGER_START: 176 wait_event_timeout(sdev->waitq, !sdev->code_loading, 177 HDA_DSP_CL_TRIGGER_TIMEOUT); 178 179 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL, 180 1 << hstream->index, 181 1 << hstream->index); 182 183 snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, 184 sd_offset, 185 SOF_HDA_SD_CTL_DMA_START | 186 SOF_HDA_CL_DMA_SD_INT_MASK, 187 SOF_HDA_SD_CTL_DMA_START | 188 SOF_HDA_CL_DMA_SD_INT_MASK); 189 190 hstream->running = true; 191 return 0; 192 default: 193 return hda_dsp_stream_trigger(sdev, stream, cmd); 194 } 195 } 196 197 static struct hdac_ext_stream *get_stream_with_tag(struct snd_sof_dev *sdev, 198 int tag) 199 { 200 struct hdac_bus *bus = sof_to_bus(sdev); 201 struct hdac_stream *s; 202 203 /* get stream with tag */ 204 list_for_each_entry(s, &bus->stream_list, list) { 205 if (s->direction == SNDRV_PCM_STREAM_PLAYBACK && 206 s->stream_tag == tag) { 207 return stream_to_hdac_ext_stream(s); 208 } 209 } 210 211 return NULL; 212 } 213 214 static int cl_cleanup(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab, 215 struct hdac_ext_stream *stream) 216 { 217 struct hdac_stream *hstream = &stream->hstream; 218 int sd_offset = SOF_STREAM_SD_OFFSET(hstream); 219 int ret; 220 221 ret = hda_dsp_stream_spib_config(sdev, stream, HDA_DSP_SPIB_DISABLE, 0); 222 223 hda_dsp_stream_put(sdev, SNDRV_PCM_STREAM_PLAYBACK, 224 hstream->stream_tag); 225 hstream->running = 0; 226 hstream->substream = NULL; 227 228 /* reset BDL address */ 229 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, 230 sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL, 0); 231 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, 232 sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU, 0); 233 234 snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, sd_offset, 0); 235 snd_dma_free_pages(dmab); 236 dmab->area = NULL; 237 hstream->bufsize = 0; 238 hstream->format_val = 0; 239 240 return ret; 241 } 242 243 static int cl_copy_fw(struct snd_sof_dev *sdev, struct hdac_ext_stream *stream) 244 { 245 unsigned int reg; 246 int ret, status; 247 248 ret = cl_trigger(sdev, stream, SNDRV_PCM_TRIGGER_START); 249 if (ret < 0) { 250 dev_err(sdev->dev, "error: DMA trigger start failed\n"); 251 return ret; 252 } 253 254 status = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, 255 HDA_DSP_SRAM_REG_ROM_STATUS, reg, 256 ((reg & HDA_DSP_ROM_STS_MASK) 257 == HDA_DSP_ROM_FW_ENTERED), 258 HDA_DSP_REG_POLL_INTERVAL_US, 259 HDA_DSP_BASEFW_TIMEOUT_US); 260 261 /* 262 * even in case of errors we still need to stop the DMAs, 263 * but we return the initial error should the DMA stop also fail 264 */ 265 266 if (status < 0) { 267 dev_err(sdev->dev, 268 "error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n", 269 __func__); 270 } 271 272 ret = cl_trigger(sdev, stream, SNDRV_PCM_TRIGGER_STOP); 273 if (ret < 0) { 274 dev_err(sdev->dev, "error: DMA trigger stop failed\n"); 275 if (!status) 276 status = ret; 277 } 278 279 return status; 280 } 281 282 int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev) 283 { 284 struct snd_sof_pdata *plat_data = sdev->pdata; 285 const struct sof_dev_desc *desc = plat_data->desc; 286 const struct sof_intel_dsp_desc *chip_info; 287 struct hdac_ext_stream *stream; 288 struct firmware stripped_firmware; 289 int ret, ret1, tag, i; 290 291 chip_info = desc->chip_info; 292 293 stripped_firmware.data = plat_data->fw->data; 294 stripped_firmware.size = plat_data->fw->size; 295 296 /* init for booting wait */ 297 init_waitqueue_head(&sdev->boot_wait); 298 299 /* prepare DMA for code loader stream */ 300 tag = cl_stream_prepare(sdev, 0x40, stripped_firmware.size, 301 &sdev->dmab, SNDRV_PCM_STREAM_PLAYBACK); 302 303 if (tag < 0) { 304 dev_err(sdev->dev, "error: dma prepare for fw loading err: %x\n", 305 tag); 306 return tag; 307 } 308 309 /* get stream with tag */ 310 stream = get_stream_with_tag(sdev, tag); 311 if (!stream) { 312 dev_err(sdev->dev, 313 "error: could not get stream with stream tag %d\n", 314 tag); 315 ret = -ENODEV; 316 goto err; 317 } 318 319 memcpy(sdev->dmab.area, stripped_firmware.data, 320 stripped_firmware.size); 321 322 /* try ROM init a few times before giving up */ 323 for (i = 0; i < HDA_FW_BOOT_ATTEMPTS; i++) { 324 ret = cl_dsp_init(sdev, stripped_firmware.data, 325 stripped_firmware.size, tag); 326 327 /* don't retry anymore if successful */ 328 if (!ret) 329 break; 330 331 dev_dbg(sdev->dev, "iteration %d of Core En/ROM load failed: %d\n", 332 i, ret); 333 dev_dbg(sdev->dev, "Error code=0x%x: FW status=0x%x\n", 334 snd_sof_dsp_read(sdev, HDA_DSP_BAR, 335 HDA_DSP_SRAM_REG_ROM_ERROR), 336 snd_sof_dsp_read(sdev, HDA_DSP_BAR, 337 HDA_DSP_SRAM_REG_ROM_STATUS)); 338 } 339 340 if (i == HDA_FW_BOOT_ATTEMPTS) { 341 dev_err(sdev->dev, "error: dsp init failed after %d attempts with err: %d\n", 342 i, ret); 343 goto cleanup; 344 } 345 346 /* 347 * at this point DSP ROM has been initialized and 348 * should be ready for code loading and firmware boot 349 */ 350 ret = cl_copy_fw(sdev, stream); 351 if (!ret) 352 dev_dbg(sdev->dev, "Firmware download successful, booting...\n"); 353 else 354 dev_err(sdev->dev, "error: load fw failed ret: %d\n", ret); 355 356 cleanup: 357 /* 358 * Perform codeloader stream cleanup. 359 * This should be done even if firmware loading fails. 360 * If the cleanup also fails, we return the initial error 361 */ 362 ret1 = cl_cleanup(sdev, &sdev->dmab, stream); 363 if (ret1 < 0) { 364 dev_err(sdev->dev, "error: Code loader DSP cleanup failed\n"); 365 366 /* set return value to indicate cleanup failure */ 367 if (!ret) 368 ret = ret1; 369 } 370 371 /* 372 * return master core id if both fw copy 373 * and stream clean up are successful 374 */ 375 if (!ret) 376 return chip_info->init_core_mask; 377 378 /* dump dsp registers and disable DSP upon error */ 379 err: 380 hda_dsp_dump(sdev, SOF_DBG_REGS | SOF_DBG_PCI | SOF_DBG_MBOX); 381 382 /* disable DSP */ 383 snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, 384 SOF_HDA_REG_PP_PPCTL, 385 SOF_HDA_PPCTL_GPROCEN, 0); 386 return ret; 387 } 388 389 /* pre fw run operations */ 390 int hda_dsp_pre_fw_run(struct snd_sof_dev *sdev) 391 { 392 /* disable clock gating and power gating */ 393 return hda_dsp_ctrl_clock_power_gating(sdev, false); 394 } 395 396 /* post fw run operations */ 397 int hda_dsp_post_fw_run(struct snd_sof_dev *sdev) 398 { 399 /* re-enable clock gating and power gating */ 400 return hda_dsp_ctrl_clock_power_gating(sdev, true); 401 } 402