// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) // // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // // Copyright(c) 2018 Intel Corporation. All rights reserved. // // Authors: Liam Girdwood // Ranjani Sridharan // Rander Wang // Keyon Jie // /* * Hardware interface for HDA DSP code loader */ #include #include #include #include #include "../ops.h" #include "hda.h" #define HDA_FW_BOOT_ATTEMPTS 3 #define HDA_CL_STREAM_FORMAT 0x40 static struct hdac_ext_stream *cl_stream_prepare(struct snd_sof_dev *sdev, unsigned int format, unsigned int size, struct snd_dma_buffer *dmab, int direction) { struct hdac_ext_stream *dsp_stream; struct hdac_stream *hstream; struct pci_dev *pci = to_pci_dev(sdev->dev); int ret; dsp_stream = hda_dsp_stream_get(sdev, direction); if (!dsp_stream) { dev_err(sdev->dev, "error: no stream available\n"); return ERR_PTR(-ENODEV); } hstream = &dsp_stream->hstream; hstream->substream = NULL; /* allocate DMA buffer */ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, &pci->dev, size, dmab); if (ret < 0) { dev_err(sdev->dev, "error: memory alloc failed: %x\n", ret); goto out_put; } hstream->period_bytes = 0;/* initialize period_bytes */ hstream->format_val = format; hstream->bufsize = size; if (direction == SNDRV_PCM_STREAM_CAPTURE) { ret = hda_dsp_iccmax_stream_hw_params(sdev, dsp_stream, dmab, NULL); if (ret < 0) { dev_err(sdev->dev, "error: iccmax stream prepare failed: %x\n", ret); goto out_free; } } else { ret = hda_dsp_stream_hw_params(sdev, dsp_stream, dmab, NULL); if (ret < 0) { dev_err(sdev->dev, "error: hdac prepare failed: %x\n", ret); goto out_free; } hda_dsp_stream_spib_config(sdev, dsp_stream, HDA_DSP_SPIB_ENABLE, size); } return dsp_stream; out_free: snd_dma_free_pages(dmab); out_put: hda_dsp_stream_put(sdev, direction, hstream->stream_tag); return ERR_PTR(ret); } /* * first boot sequence has some extra steps. * power on all host managed cores and only unstall/run the boot core to boot the * DSP then turn off all non boot cores (if any) is powered on. */ static int cl_dsp_init(struct snd_sof_dev *sdev, int stream_tag) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; const struct sof_intel_dsp_desc *chip = hda->desc; unsigned int status; int ret; int i; /* step 1: power up corex */ ret = hda_dsp_core_power_up(sdev, chip->host_managed_cores_mask); if (ret < 0) { if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) dev_err(sdev->dev, "error: dsp core 0/1 power up failed\n"); goto err; } /* DSP is powered up, set all SSPs to slave mode */ for (i = 0; i < chip->ssp_count; i++) { snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, chip->ssp_base_offset + i * SSP_DEV_MEM_SIZE + SSP_SSC1_OFFSET, SSP_SET_SLAVE, SSP_SET_SLAVE); } /* step 2: purge FW request */ snd_sof_dsp_write(sdev, HDA_DSP_BAR, chip->ipc_req, chip->ipc_req_mask | (HDA_DSP_IPC_PURGE_FW | ((stream_tag - 1) << 9))); /* step 3: unset core 0 reset state & unstall/run core 0 */ ret = hda_dsp_core_run(sdev, chip->init_core_mask); if (ret < 0) { if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) dev_err(sdev->dev, "error: dsp core start failed %d\n", ret); ret = -EIO; goto err; } /* step 4: wait for IPC DONE bit from ROM */ ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, chip->ipc_ack, status, ((status & chip->ipc_ack_mask) == chip->ipc_ack_mask), HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_INIT_TIMEOUT_US); if (ret < 0) { if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) dev_err(sdev->dev, "error: %s: timeout for HIPCIE done\n", __func__); goto err; } /* set DONE bit to clear the reply IPC message */ snd_sof_dsp_update_bits_forced(sdev, HDA_DSP_BAR, chip->ipc_ack, chip->ipc_ack_mask, chip->ipc_ack_mask); /* step 5: power down corex */ ret = hda_dsp_core_power_down(sdev, chip->host_managed_cores_mask & ~(BIT(0))); if (ret < 0) { if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) dev_err(sdev->dev, "error: dsp core x power down failed\n"); goto err; } /* step 6: enable IPC interrupts */ hda_dsp_ipc_int_enable(sdev); /* step 7: wait for ROM init */ ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, HDA_DSP_SRAM_REG_ROM_STATUS, status, ((status & HDA_DSP_ROM_STS_MASK) == HDA_DSP_ROM_INIT), HDA_DSP_REG_POLL_INTERVAL_US, chip->rom_init_timeout * USEC_PER_MSEC); if (!ret) return 0; if (hda->boot_iteration == HDA_FW_BOOT_ATTEMPTS) dev_err(sdev->dev, "error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n", __func__); err: hda_dsp_dump(sdev, SOF_DBG_REGS | SOF_DBG_PCI | SOF_DBG_MBOX); hda_dsp_core_reset_power_down(sdev, chip->host_managed_cores_mask); return ret; } static int cl_trigger(struct snd_sof_dev *sdev, struct hdac_ext_stream *stream, int cmd) { struct hdac_stream *hstream = &stream->hstream; int sd_offset = SOF_STREAM_SD_OFFSET(hstream); /* code loader is special case that reuses stream ops */ switch (cmd) { case SNDRV_PCM_TRIGGER_START: snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, SOF_HDA_INTCTL, 1 << hstream->index, 1 << hstream->index); snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset, SOF_HDA_SD_CTL_DMA_START | SOF_HDA_CL_DMA_SD_INT_MASK, SOF_HDA_SD_CTL_DMA_START | SOF_HDA_CL_DMA_SD_INT_MASK); hstream->running = true; return 0; default: return hda_dsp_stream_trigger(sdev, stream, cmd); } } static int cl_cleanup(struct snd_sof_dev *sdev, struct snd_dma_buffer *dmab, struct hdac_ext_stream *stream) { struct hdac_stream *hstream = &stream->hstream; int sd_offset = SOF_STREAM_SD_OFFSET(hstream); int ret = 0; if (hstream->direction == SNDRV_PCM_STREAM_PLAYBACK) ret = hda_dsp_stream_spib_config(sdev, stream, HDA_DSP_SPIB_DISABLE, 0); else snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, sd_offset, SOF_HDA_SD_CTL_DMA_START, 0); hda_dsp_stream_put(sdev, hstream->direction, hstream->stream_tag); hstream->running = 0; hstream->substream = NULL; /* reset BDL address */ snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPL, 0); snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, sd_offset + SOF_HDA_ADSP_REG_CL_SD_BDLPU, 0); snd_sof_dsp_write(sdev, HDA_DSP_HDA_BAR, sd_offset, 0); snd_dma_free_pages(dmab); dmab->area = NULL; hstream->bufsize = 0; hstream->format_val = 0; return ret; } static int cl_copy_fw(struct snd_sof_dev *sdev, struct hdac_ext_stream *stream) { unsigned int reg; int ret, status; ret = cl_trigger(sdev, stream, SNDRV_PCM_TRIGGER_START); if (ret < 0) { dev_err(sdev->dev, "error: DMA trigger start failed\n"); return ret; } status = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, HDA_DSP_SRAM_REG_ROM_STATUS, reg, ((reg & HDA_DSP_ROM_STS_MASK) == HDA_DSP_ROM_FW_ENTERED), HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_BASEFW_TIMEOUT_US); /* * even in case of errors we still need to stop the DMAs, * but we return the initial error should the DMA stop also fail */ if (status < 0) { dev_err(sdev->dev, "error: %s: timeout HDA_DSP_SRAM_REG_ROM_STATUS read\n", __func__); } ret = cl_trigger(sdev, stream, SNDRV_PCM_TRIGGER_STOP); if (ret < 0) { dev_err(sdev->dev, "error: DMA trigger stop failed\n"); if (!status) status = ret; } return status; } int hda_dsp_cl_boot_firmware_iccmax(struct snd_sof_dev *sdev) { struct snd_sof_pdata *plat_data = sdev->pdata; struct hdac_ext_stream *iccmax_stream; struct hdac_bus *bus = sof_to_bus(sdev); struct firmware stripped_firmware; int ret, ret1; u8 original_gb; /* save the original LTRP guardband value */ original_gb = snd_hdac_chip_readb(bus, VS_LTRP) & HDA_VS_INTEL_LTRP_GB_MASK; if (plat_data->fw->size <= plat_data->fw_offset) { dev_err(sdev->dev, "error: firmware size must be greater than firmware offset\n"); return -EINVAL; } stripped_firmware.size = plat_data->fw->size - plat_data->fw_offset; /* prepare capture stream for ICCMAX */ iccmax_stream = cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, stripped_firmware.size, &sdev->dmab_bdl, SNDRV_PCM_STREAM_CAPTURE); if (IS_ERR(iccmax_stream)) { dev_err(sdev->dev, "error: dma prepare for ICCMAX stream failed\n"); return PTR_ERR(iccmax_stream); } ret = hda_dsp_cl_boot_firmware(sdev); /* * Perform iccmax stream cleanup. This should be done even if firmware loading fails. * If the cleanup also fails, we return the initial error */ ret1 = cl_cleanup(sdev, &sdev->dmab_bdl, iccmax_stream); if (ret1 < 0) { dev_err(sdev->dev, "error: ICCMAX stream cleanup failed\n"); /* set return value to indicate cleanup failure */ if (!ret) ret = ret1; } /* restore the original guardband value after FW boot */ snd_hdac_chip_updateb(bus, VS_LTRP, HDA_VS_INTEL_LTRP_GB_MASK, original_gb); return ret; } int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; struct snd_sof_pdata *plat_data = sdev->pdata; const struct sof_dev_desc *desc = plat_data->desc; const struct sof_intel_dsp_desc *chip_info; struct hdac_ext_stream *stream; struct firmware stripped_firmware; int ret, ret1, i; chip_info = desc->chip_info; if (plat_data->fw->size <= plat_data->fw_offset) { dev_err(sdev->dev, "error: firmware size must be greater than firmware offset\n"); return -EINVAL; } stripped_firmware.data = plat_data->fw->data + plat_data->fw_offset; stripped_firmware.size = plat_data->fw->size - plat_data->fw_offset; /* init for booting wait */ init_waitqueue_head(&sdev->boot_wait); /* prepare DMA for code loader stream */ stream = cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, stripped_firmware.size, &sdev->dmab, SNDRV_PCM_STREAM_PLAYBACK); if (IS_ERR(stream)) { dev_err(sdev->dev, "error: dma prepare for fw loading failed\n"); return PTR_ERR(stream); } memcpy(sdev->dmab.area, stripped_firmware.data, stripped_firmware.size); /* try ROM init a few times before giving up */ for (i = 0; i < HDA_FW_BOOT_ATTEMPTS; i++) { dev_dbg(sdev->dev, "Attempting iteration %d of Core En/ROM load...\n", i); hda->boot_iteration = i + 1; ret = cl_dsp_init(sdev, stream->hstream.stream_tag); /* don't retry anymore if successful */ if (!ret) break; } if (i == HDA_FW_BOOT_ATTEMPTS) { dev_err(sdev->dev, "error: dsp init failed after %d attempts with err: %d\n", i, ret); dev_err(sdev->dev, "ROM error=0x%x: FW status=0x%x\n", snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_SRAM_REG_ROM_ERROR), snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_SRAM_REG_ROM_STATUS)); goto cleanup; } /* * When a SoundWire link is in clock stop state, a Slave * device may trigger in-band wakes for events such as jack * insertion or acoustic event detection. This event will lead * to a WAKEEN interrupt, handled by the PCI device and routed * to PME if the PCI device is in D3. The resume function in * audio PCI driver will be invoked by ACPI for PME event and * initialize the device and process WAKEEN interrupt. * * The WAKEEN interrupt should be processed ASAP to prevent an * interrupt flood, otherwise other interrupts, such IPC, * cannot work normally. The WAKEEN is handled after the ROM * is initialized successfully, which ensures power rails are * enabled before accessing the SoundWire SHIM registers */ if (!sdev->first_boot) hda_sdw_process_wakeen(sdev); /* * at this point DSP ROM has been initialized and * should be ready for code loading and firmware boot */ ret = cl_copy_fw(sdev, stream); if (!ret) dev_dbg(sdev->dev, "Firmware download successful, booting...\n"); else dev_err(sdev->dev, "error: load fw failed ret: %d\n", ret); cleanup: /* * Perform codeloader stream cleanup. * This should be done even if firmware loading fails. * If the cleanup also fails, we return the initial error */ ret1 = cl_cleanup(sdev, &sdev->dmab, stream); if (ret1 < 0) { dev_err(sdev->dev, "error: Code loader DSP cleanup failed\n"); /* set return value to indicate cleanup failure */ if (!ret) ret = ret1; } /* * return primary core id if both fw copy * and stream clean up are successful */ if (!ret) return chip_info->init_core_mask; /* dump dsp registers and disable DSP upon error */ hda_dsp_dump(sdev, SOF_DBG_REGS | SOF_DBG_PCI | SOF_DBG_MBOX); /* disable DSP */ snd_sof_dsp_update_bits(sdev, HDA_DSP_PP_BAR, SOF_HDA_REG_PP_PPCTL, SOF_HDA_PPCTL_GPROCEN, 0); return ret; } /* pre fw run operations */ int hda_dsp_pre_fw_run(struct snd_sof_dev *sdev) { /* disable clock gating and power gating */ return hda_dsp_ctrl_clock_power_gating(sdev, false); } /* post fw run operations */ int hda_dsp_post_fw_run(struct snd_sof_dev *sdev) { int ret; if (sdev->first_boot) { ret = hda_sdw_startup(sdev); if (ret < 0) { dev_err(sdev->dev, "error: could not startup SoundWire links\n"); return ret; } } hda_sdw_int_enable(sdev, true); /* re-enable clock gating and power gating */ return hda_dsp_ctrl_clock_power_gating(sdev, true); }