We have to save the physical address of extended firmware block in the beginning of mailbox every time when we boot the DSP firmware since that mailbox address is re-used after DSP firmware is running. Otherwise DSP firmware will get bogus extended firmware block address during next DSP boot.
Currently this is not problem but becomes when DSP runtime rebooting is implemented. Prepare for that by moving extended firmware address saving from sst_byt_init() to sst_byt_boot().
Signed-off-by: Jarkko Nikula jarkko.nikula@linux.intel.com --- sound/soc/intel/sst-baytrail-dsp.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/sound/soc/intel/sst-baytrail-dsp.c b/sound/soc/intel/sst-baytrail-dsp.c index a50bf7fc0e3a..4a5d489e520b 100644 --- a/sound/soc/intel/sst-baytrail-dsp.c +++ b/sound/soc/intel/sst-baytrail-dsp.c @@ -214,6 +214,13 @@ static void sst_byt_boot(struct sst_dsp *sst) { int tries = 10;
+ /* + * save the physical address of extended firmware block in the first + * 4 bytes of the mailbox + */ + memcpy_toio(sst->addr.lpe + SST_BYT_MAILBOX_OFFSET, + &sst->pdata->fw_base, sizeof(u32)); + /* release stall and wait to unstall */ sst_dsp_shim_update_bits64(sst, SST_CSR, SST_BYT_CSR_STALL, 0x0); while (tries--) { @@ -317,13 +324,6 @@ static int sst_byt_init(struct sst_dsp *sst, struct sst_pdata *pdata) return ret; }
- /* - * save the physical address of extended firmware block in the first - * 4 bytes of the mailbox - */ - memcpy_toio(sst->addr.lpe + SST_BYT_MAILBOX_OFFSET, - &pdata->fw_base, sizeof(u32)); - ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); if (ret) return ret;