The FSR (Firmware State Register) can be found at offset 0 in the SRAM and it is holding information about the state of the ROM/FW. In case of a boot failure it can be used to get the state where the boot process got stuck, it does not itself contains error codes as such.

The error code (or the firmware state information) is stored in the next soft register at offset 0x4.

Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Rander Wang rander.wang@intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/sof/intel/hda.c | 147 ++++++++++++++++++++++++++++++++------ sound/soc/sof/intel/hda.h | 63 ++++++++++++++++ 2 files changed, 190 insertions(+), 20 deletions(-)

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index bc07df1fc39f..d519b9802b3b 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -353,7 +353,7 @@ static inline bool hda_sdw_check_wakeen_irq(struct snd_sof_dev *sdev)

struct hda_dsp_msg_code { u32 code; - const char *msg; + const char *text; };

#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG) @@ -382,10 +382,7 @@ module_param_named(use_common_hdmi, hda_codec_use_common_hdmi, bool, 0444); MODULE_PARM_DESC(use_common_hdmi, "SOF HDA use common HDMI codec driver"); #endif

-static const struct hda_dsp_msg_code hda_dsp_rom_msg[] = { - {HDA_DSP_ROM_FW_MANIFEST_LOADED, "status: manifest loaded"}, - {HDA_DSP_ROM_FW_FW_LOADED, "status: fw loaded"}, - {HDA_DSP_ROM_FW_ENTERED, "status: fw entered"}, +static const struct hda_dsp_msg_code hda_dsp_rom_fw_error_texts[] = { {HDA_DSP_ROM_CSE_ERROR, "error: cse error"}, {HDA_DSP_ROM_CSE_WRONG_RESPONSE, "error: cse wrong response"}, {HDA_DSP_ROM_IMR_TO_SMALL, "error: IMR too small"}, @@ -404,26 +401,136 @@ static const struct hda_dsp_msg_code hda_dsp_rom_msg[] = { {HDA_DSP_ROM_NULL_FW_ENTRY, "error: null FW entry point"}, };

-static void hda_dsp_get_status(struct snd_sof_dev *sdev, const char *level) +#define FSR_ROM_STATE_ENTRY(state) {FSR_STATE_ROM_##state, #state} +static const struct hda_dsp_msg_code fsr_rom_state_names[] = { + FSR_ROM_STATE_ENTRY(INIT), + FSR_ROM_STATE_ENTRY(INIT_DONE), + FSR_ROM_STATE_ENTRY(CSE_MANIFEST_LOADED), + FSR_ROM_STATE_ENTRY(FW_MANIFEST_LOADED), + FSR_ROM_STATE_ENTRY(FW_FW_LOADED), + FSR_ROM_STATE_ENTRY(FW_ENTERED), + FSR_ROM_STATE_ENTRY(VERIFY_FEATURE_MASK), + FSR_ROM_STATE_ENTRY(GET_LOAD_OFFSET), + FSR_ROM_STATE_ENTRY(FETCH_ROM_EXT), + FSR_ROM_STATE_ENTRY(FETCH_ROM_EXT_DONE), + /* CSE states */ + FSR_ROM_STATE_ENTRY(CSE_IMR_REQUEST), + FSR_ROM_STATE_ENTRY(CSE_IMR_GRANTED), + FSR_ROM_STATE_ENTRY(CSE_VALIDATE_IMAGE_REQUEST), + FSR_ROM_STATE_ENTRY(CSE_IMAGE_VALIDATED), + FSR_ROM_STATE_ENTRY(CSE_IPC_IFACE_INIT), + FSR_ROM_STATE_ENTRY(CSE_IPC_RESET_PHASE_1), + FSR_ROM_STATE_ENTRY(CSE_IPC_OPERATIONAL_ENTRY), + FSR_ROM_STATE_ENTRY(CSE_IPC_OPERATIONAL), + FSR_ROM_STATE_ENTRY(CSE_IPC_DOWN), +}; + +#define FSR_BRINGUP_STATE_ENTRY(state) {FSR_STATE_BRINGUP_##state, #state} +static const struct hda_dsp_msg_code fsr_bringup_state_names[] = { + FSR_BRINGUP_STATE_ENTRY(INIT), + FSR_BRINGUP_STATE_ENTRY(INIT_DONE), + FSR_BRINGUP_STATE_ENTRY(HPSRAM_LOAD), + FSR_BRINGUP_STATE_ENTRY(UNPACK_START), + FSR_BRINGUP_STATE_ENTRY(IMR_RESTORE), + FSR_BRINGUP_STATE_ENTRY(FW_ENTERED), +}; + +#define FSR_WAIT_STATE_ENTRY(state) {FSR_WAIT_FOR_##state, #state} +static const struct hda_dsp_msg_code fsr_wait_state_names[] = { + FSR_WAIT_STATE_ENTRY(IPC_BUSY), + FSR_WAIT_STATE_ENTRY(IPC_DONE), + FSR_WAIT_STATE_ENTRY(CACHE_INVALIDATION), + FSR_WAIT_STATE_ENTRY(LP_SRAM_OFF), + FSR_WAIT_STATE_ENTRY(DMA_BUFFER_FULL), + FSR_WAIT_STATE_ENTRY(CSE_CSR), +}; + +#define FSR_MODULE_NAME_ENTRY(mod) [FSR_MOD_##mod] = #mod +static const char * const fsr_module_names[] = { + FSR_MODULE_NAME_ENTRY(ROM), + FSR_MODULE_NAME_ENTRY(ROM_BYP), + FSR_MODULE_NAME_ENTRY(BASE_FW), + FSR_MODULE_NAME_ENTRY(LP_BOOT), + FSR_MODULE_NAME_ENTRY(BRNGUP), + FSR_MODULE_NAME_ENTRY(ROM_EXT), +}; + +static const char * +hda_dsp_get_state_text(u32 code, const struct hda_dsp_msg_code *msg_code, + size_t array_size) { - const struct sof_intel_dsp_desc *chip; - u32 status; int i;

- chip = get_chip_info(sdev->pdata); - status = snd_sof_dsp_read(sdev, HDA_DSP_BAR, - chip->rom_status_reg); - - for (i = 0; i < ARRAY_SIZE(hda_dsp_rom_msg); i++) { - if (status == hda_dsp_rom_msg[i].code) { - dev_printk(level, sdev->dev, "%s - code %8.8x\n", - hda_dsp_rom_msg[i].msg, status); - return; - } + for (i = 0; i < array_size; i++) { + if (code == msg_code[i].code) + return msg_code[i].text; }

+ return NULL; +} + +static void hda_dsp_get_state(struct snd_sof_dev *sdev, const char *level) +{ + const struct sof_intel_dsp_desc *chip = get_chip_info(sdev->pdata); + const char *state_text, *error_text, *module_text; + u32 fsr, state, wait_state, module, error_code; + + fsr = snd_sof_dsp_read(sdev, HDA_DSP_BAR, chip->rom_status_reg); + state = FSR_TO_STATE_CODE(fsr); + wait_state = FSR_TO_WAIT_STATE_CODE(fsr); + module = FSR_TO_MODULE_CODE(fsr); + + if (module > FSR_MOD_ROM_EXT) + module_text = "unknown"; + else + module_text = fsr_module_names[module]; + + if (module == FSR_MOD_BRNGUP) + state_text = hda_dsp_get_state_text(state, fsr_bringup_state_names, + ARRAY_SIZE(fsr_bringup_state_names)); + else + state_text = hda_dsp_get_state_text(state, fsr_rom_state_names, + ARRAY_SIZE(fsr_rom_state_names)); + /* not for us, must be generic sof message */ - dev_dbg(sdev->dev, "unknown ROM status value %8.8x\n", status); + if (!state_text) { + dev_printk(level, sdev->dev, "%#010x: unknown ROM status value\n", fsr); + return; + } + + if (wait_state) { + const char *wait_state_text; + + wait_state_text = hda_dsp_get_state_text(wait_state, fsr_wait_state_names, + ARRAY_SIZE(fsr_wait_state_names)); + if (!wait_state_text) + wait_state_text = "unknown"; + + dev_printk(level, sdev->dev, + "%#010x: module: %s, state: %s, waiting for: %s, %s\n", + fsr, module_text, state_text, wait_state_text, + fsr & FSR_HALTED ? "not running" : "running"); + } else { + dev_printk(level, sdev->dev, "%#010x: module: %s, state: %s, %s\n", + fsr, module_text, state_text, + fsr & FSR_HALTED ? "not running" : "running"); + } + + error_code = snd_sof_dsp_read(sdev, HDA_DSP_BAR, chip->rom_status_reg + 4); + if (!error_code) + return; + + error_text = hda_dsp_get_state_text(error_code, hda_dsp_rom_fw_error_texts, + ARRAY_SIZE(hda_dsp_rom_fw_error_texts)); + if (!error_text) + error_text = "unknown"; + + if (state == FSR_STATE_FW_ENTERED) + dev_printk(level, sdev->dev, "status code: %#x (%s)\n", error_code, + error_text); + else + dev_printk(level, sdev->dev, "error code: %#x (%s)\n", error_code, + error_text); }

static void hda_dsp_get_registers(struct snd_sof_dev *sdev, @@ -482,7 +589,7 @@ void hda_dsp_dump(struct snd_sof_dev *sdev, u32 flags) u32 stack[HDA_DSP_STACK_DUMP_SIZE];

/* print ROM/FW status */ - hda_dsp_get_status(sdev, level); + hda_dsp_get_state(sdev, level);

if (flags & SOF_DBG_DUMP_REGS) { u32 status = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_SRAM_REG_FW_STATUS); diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index dc713c20ba1d..77c74e3c09b1 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -187,6 +187,69 @@

#define HDA_DSP_STACK_DUMP_SIZE 32

+/* ROM/FW status register */ +#define FSR_STATE_MASK GENMASK(23, 0) +#define FSR_WAIT_STATE_MASK GENMASK(27, 24) +#define FSR_MODULE_MASK GENMASK(30, 28) +#define FSR_HALTED BIT(31) +#define FSR_TO_STATE_CODE(x) ((x) & FSR_STATE_MASK) +#define FSR_TO_WAIT_STATE_CODE(x) (((x) & FSR_WAIT_STATE_MASK) >> 24) +#define FSR_TO_MODULE_CODE(x) (((x) & FSR_MODULE_MASK) >> 28) + +/* Wait states */ +#define FSR_WAIT_FOR_IPC_BUSY 0x1 +#define FSR_WAIT_FOR_IPC_DONE 0x2 +#define FSR_WAIT_FOR_CACHE_INVALIDATION 0x3 +#define FSR_WAIT_FOR_LP_SRAM_OFF 0x4 +#define FSR_WAIT_FOR_DMA_BUFFER_FULL 0x5 +#define FSR_WAIT_FOR_CSE_CSR 0x6 + +/* Module codes */ +#define FSR_MOD_ROM 0x0 +#define FSR_MOD_ROM_BYP 0x1 +#define FSR_MOD_BASE_FW 0x2 +#define FSR_MOD_LP_BOOT 0x3 +#define FSR_MOD_BRNGUP 0x4 +#define FSR_MOD_ROM_EXT 0x5 + +/* State codes (module dependent) */ +/* Module independent states */ +#define FSR_STATE_INIT 0x0 +#define FSR_STATE_INIT_DONE 0x1 +#define FSR_STATE_FW_ENTERED 0x5 + +/* ROM states */ +#define FSR_STATE_ROM_INIT FSR_STATE_INIT +#define FSR_STATE_ROM_INIT_DONE FSR_STATE_INIT_DONE +#define FSR_STATE_ROM_CSE_MANIFEST_LOADED 0x2 +#define FSR_STATE_ROM_FW_MANIFEST_LOADED 0x3 +#define FSR_STATE_ROM_FW_FW_LOADED 0x4 +#define FSR_STATE_ROM_FW_ENTERED FSR_STATE_FW_ENTERED +#define FSR_STATE_ROM_VERIFY_FEATURE_MASK 0x6 +#define FSR_STATE_ROM_GET_LOAD_OFFSET 0x7 +#define FSR_STATE_ROM_FETCH_ROM_EXT 0x8 +#define FSR_STATE_ROM_FETCH_ROM_EXT_DONE 0x9 + +/* (ROM) CSE states */ +#define FSR_STATE_ROM_CSE_IMR_REQUEST 0x10 +#define FSR_STATE_ROM_CSE_IMR_GRANTED 0x11 +#define FSR_STATE_ROM_CSE_VALIDATE_IMAGE_REQUEST 0x12 +#define FSR_STATE_ROM_CSE_IMAGE_VALIDATED 0x13 + +#define FSR_STATE_ROM_CSE_IPC_IFACE_INIT 0x20 +#define FSR_STATE_ROM_CSE_IPC_RESET_PHASE_1 0x21 +#define FSR_STATE_ROM_CSE_IPC_OPERATIONAL_ENTRY 0x22 +#define FSR_STATE_ROM_CSE_IPC_OPERATIONAL 0x23 +#define FSR_STATE_ROM_CSE_IPC_DOWN 0x24 + +/* BRINGUP (or BRNGUP) states */ +#define FSR_STATE_BRINGUP_INIT FSR_STATE_INIT +#define FSR_STATE_BRINGUP_INIT_DONE FSR_STATE_INIT_DONE +#define FSR_STATE_BRINGUP_HPSRAM_LOAD 0x2 +#define FSR_STATE_BRINGUP_UNPACK_START 0X3 +#define FSR_STATE_BRINGUP_IMR_RESTORE 0x4 +#define FSR_STATE_BRINGUP_FW_ENTERED FSR_STATE_FW_ENTERED + /* ROM status/error values */ #define HDA_DSP_ROM_STS_MASK GENMASK(23, 0) #define HDA_DSP_ROM_INIT 0x1

All code have been switched to use the new FSR defines and macros for ROM/FW state tracking. The old definitions can be dropped now.

Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Rander Wang rander.wang@intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/sof/intel/hda.h | 6 ------ 1 file changed, 6 deletions(-)

diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h index 77c74e3c09b1..effa1b0f556d 100644 --- a/sound/soc/sof/intel/hda.h +++ b/sound/soc/sof/intel/hda.h @@ -251,12 +251,6 @@ #define FSR_STATE_BRINGUP_FW_ENTERED FSR_STATE_FW_ENTERED

/* ROM status/error values */ -#define HDA_DSP_ROM_STS_MASK GENMASK(23, 0) -#define HDA_DSP_ROM_INIT 0x1 -#define HDA_DSP_ROM_FW_MANIFEST_LOADED 0x3 -#define HDA_DSP_ROM_FW_FW_LOADED 0x4 -#define HDA_DSP_ROM_FW_ENTERED 0x5 -#define HDA_DSP_ROM_RFW_START 0xf #define HDA_DSP_ROM_CSE_ERROR 40 #define HDA_DSP_ROM_CSE_WRONG_RESPONSE 41 #define HDA_DSP_ROM_IMR_TO_SMALL 42