From: Peter Ujfalusi peter.ujfalusi@linux.intel.com

The sequence for IMR boot is essentially the same as normal boot with the difference that instead of DMA from host the firmware is loaded from IMR.

Re-structure the code to use the existing sequence and also add fallback handling in case the IMR boot fails.

Introduce a new flag to make the IMR boot support check simpler.

Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/intel/hda-loader.c | 76 ++++++++++++++++---------------- sound/soc/sof/intel/hda.h | 6 ++- sound/soc/sof/intel/icl.c | 7 +++ 3 files changed, 50 insertions(+), 39 deletions(-)

diff --git a/sound/soc/sof/intel/hda-loader.c b/sound/soc/sof/intel/hda-loader.c index 78ceb5a2cbc0c..7d4436f079c65 100644 --- a/sound/soc/sof/intel/hda-loader.c +++ b/sound/soc/sof/intel/hda-loader.c @@ -99,14 +99,14 @@ struct hdac_ext_stream *hda_cl_stream_prepare(struct snd_sof_dev *sdev, unsigned * status on core 1, so power up core 1 also momentarily, keep it in * reset/stall and then turn it off */ -static int cl_dsp_init(struct snd_sof_dev *sdev, int stream_tag) +static int cl_dsp_init(struct snd_sof_dev *sdev, int stream_tag, bool imr_boot) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; const struct sof_intel_dsp_desc *chip = hda->desc; - unsigned int status; + unsigned int status, target_status; + u32 flags, ipc_hdr, j; unsigned long mask; char *dump_msg; - u32 flags, j; int ret;

/* step 1: power up corex */ @@ -119,10 +119,12 @@ static int cl_dsp_init(struct snd_sof_dev *sdev, int stream_tag)

hda_ssp_set_cbp_cfp(sdev);

- /* 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 2: Send ROM_CONTROL command (stream_tag is ignored for IMR boot) */ + ipc_hdr = chip->ipc_req_mask | HDA_DSP_ROM_IPC_CONTROL; + if (!imr_boot) + ipc_hdr |= HDA_DSP_ROM_IPC_PURGE_FW | ((stream_tag - 1) << 9); + + snd_sof_dsp_write(sdev, HDA_DSP_BAR, chip->ipc_req, ipc_hdr);

/* step 3: unset core 0 reset state & unstall/run core 0 */ ret = hda_dsp_core_run(sdev, BIT(0)); @@ -169,11 +171,20 @@ static int cl_dsp_init(struct snd_sof_dev *sdev, int stream_tag) /* step 6: enable IPC interrupts */ hda_dsp_ipc_int_enable(sdev);

- /* step 7: wait for ROM init */ + /* + * step 7: + * - Cold/Full boot: wait for ROM init to proceed to download the firmware + * - IMR boot: wait for ROM firmware entered (firmware booted up from IMR) + */ + if (imr_boot) + target_status = HDA_DSP_ROM_FW_ENTERED; + else + target_status = HDA_DSP_ROM_INIT; + ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, chip->rom_status_reg, status, ((status & HDA_DSP_ROM_STS_MASK) - == HDA_DSP_ROM_INIT), + == target_status), HDA_DSP_REG_POLL_INTERVAL_US, chip->rom_init_timeout * USEC_PER_MSEC); @@ -358,32 +369,11 @@ int hda_dsp_cl_boot_firmware_iccmax(struct snd_sof_dev *sdev)

static int hda_dsp_boot_imr(struct snd_sof_dev *sdev) { - struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; - const struct sof_intel_dsp_desc *chip = hda->desc; - unsigned long mask; - u32 j; int ret;

- /* power up & unstall/run the cores to run the firmware */ - ret = hda_dsp_enable_core(sdev, chip->init_core_mask); - if (ret < 0) { - dev_err(sdev->dev, "dsp core start failed %d\n", ret); - return -EIO; - } - - /* set enabled cores mask and increment ref count for cores in init_core_mask */ - sdev->enabled_cores_mask |= chip->init_core_mask; - mask = sdev->enabled_cores_mask; - for_each_set_bit(j, &mask, SOF_MAX_DSP_NUM_CORES) - sdev->dsp_core_ref_count[j]++; - - hda_ssp_set_cbp_cfp(sdev); - - /* enable IPC interrupts */ - hda_dsp_ipc_int_enable(sdev); - - /* process wakes */ - hda_sdw_process_wakeen(sdev); + ret = cl_dsp_init(sdev, 0, true); + if (ret >= 0) + hda_sdw_process_wakeen(sdev);

return ret; } @@ -399,11 +389,14 @@ int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev) struct snd_dma_buffer dmab; int ret, ret1, i;

- if ((sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT) && - !(sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT)) && - !sdev->first_boot) { + if (hda->imrboot_supported && !sdev->first_boot) { dev_dbg(sdev->dev, "IMR restore supported, booting from IMR directly\n"); - return hda_dsp_boot_imr(sdev); + hda->boot_iteration = 0; + ret = hda_dsp_boot_imr(sdev); + if (ret >= 0) + return ret; + + dev_warn(sdev->dev, "IMR restore failed, trying to cold boot\n"); }

chip_info = desc->chip_info; @@ -437,7 +430,7 @@ int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev) "Attempting iteration %d of Core En/ROM load...\n", i);

hda->boot_iteration = i + 1; - ret = cl_dsp_init(sdev, hext_stream->hstream.stream_tag); + ret = cl_dsp_init(sdev, hext_stream->hstream.stream_tag, false);

/* don't retry anymore if successful */ if (!ret) @@ -525,12 +518,19 @@ int hda_dsp_post_fw_run(struct snd_sof_dev *sdev) int ret;

if (sdev->first_boot) { + struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata; + ret = hda_sdw_startup(sdev); if (ret < 0) { dev_err(sdev->dev, "error: could not startup SoundWire links\n"); return ret; } + + /* Check if IMR boot is usable */ + if (!sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT) && + sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT) + hdev->imrboot_supported = true; }

hda_sdw_int_enable(sdev, true); diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index 7827ea4fdacb3..6e05c77594809 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -210,7 +210,9 @@ #define HDA_DSP_ROM_USER_EXCEPTION 0xBEEF0000 #define HDA_DSP_ROM_UNEXPECTED_RESET 0xDECAF000 #define HDA_DSP_ROM_NULL_FW_ENTRY 0x4c4c4e55 -#define HDA_DSP_IPC_PURGE_FW 0x01004000 + +#define HDA_DSP_ROM_IPC_CONTROL 0x01000000 +#define HDA_DSP_ROM_IPC_PURGE_FW 0x00004000

/* various timeout values */ #define HDA_DSP_PU_TIMEOUT 50 @@ -416,6 +418,8 @@ enum sof_hda_D0_substate {

/* represents DSP HDA controller frontend - i.e. host facing control */ struct sof_intel_hda_dev { + bool imrboot_supported; + int boot_iteration;

struct hda_bus hbus; diff --git a/sound/soc/sof/intel/icl.c b/sound/soc/sof/intel/icl.c index 8dd5626969344..f845064c3589a 100644 --- a/sound/soc/sof/intel/icl.c +++ b/sound/soc/sof/intel/icl.c @@ -56,11 +56,18 @@ static int icl_dsp_post_fw_run(struct snd_sof_dev *sdev) int ret;

if (sdev->first_boot) { + struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata; + ret = hda_sdw_startup(sdev); if (ret < 0) { dev_err(sdev->dev, "error: could not startup SoundWire links\n"); return ret; } + + /* Check if IMR boot is usable */ + if (!sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT) && + sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT) + hdev->imrboot_supported = true; }

hda_sdw_int_enable(sdev, true);