From: Rander Wang rander.wang@intel.com

The fixed maximum size of IPC message does not allow for large transfers, e.g. for filter data. Currently such messages will be divided into smaller pieces and sent to firmware in multiple chunks. For future IPC, this strategy is not suitable.

The maximum IPC message size is limited by host box size which can be known when firmware is ready, so the fw_ready callback can allocate IPC messages with platform-specific sizes instead of the current fixed-size.

To be compatible with released firmware, current platforms will still use SOF_IPC_MSG_MAX_SIZE. For future platforms, there will be a new fw_ready function and the platform-specific allocation will take place there.

Signed-off-by: Rander Wang rander.wang@intel.com Reviewed-by: Bard Liao bard.liao@intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com --- sound/soc/sof/ipc.c | 27 ++++++++++++++++----------- sound/soc/sof/loader.c | 3 ++- sound/soc/sof/sof-priv.h | 1 + 3 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c index b2e556b64994..e6c53c6c470e 100644 --- a/sound/soc/sof/ipc.c +++ b/sound/soc/sof/ipc.c @@ -919,6 +919,22 @@ int snd_sof_ipc_valid(struct snd_sof_dev *sdev) } EXPORT_SYMBOL(snd_sof_ipc_valid);

+int sof_ipc_init_msg_memory(struct snd_sof_dev *sdev) +{ + struct snd_sof_ipc_msg *msg; + + msg = &sdev->ipc->msg; + msg->msg_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL); + if (!msg->msg_data) + return -ENOMEM; + + msg->reply_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL); + if (!msg->reply_data) + return -ENOMEM; + + return 0; +} + struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev) { struct snd_sof_ipc *ipc; @@ -935,17 +951,6 @@ struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev) /* indicate that we aren't sending a message ATM */ msg->ipc_complete = true;

- /* pre-allocate message data */ - msg->msg_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE, - GFP_KERNEL); - if (!msg->msg_data) - return NULL; - - msg->reply_data = devm_kzalloc(sdev->dev, SOF_IPC_MSG_MAX_SIZE, - GFP_KERNEL); - if (!msg->reply_data) - return NULL; - init_waitqueue_head(&msg->waitq);

return ipc; diff --git a/sound/soc/sof/loader.c b/sound/soc/sof/loader.c index 54aa7764d2b3..c04646647637 100644 --- a/sound/soc/sof/loader.c +++ b/sound/soc/sof/loader.c @@ -13,6 +13,7 @@ #include <linux/firmware.h> #include <sound/sof.h> #include <sound/sof/ext_manifest.h> +#include "sof-priv.h" #include "ops.h"

static int get_ext_windows(struct snd_sof_dev *sdev, @@ -517,7 +518,7 @@ int sof_fw_ready(struct snd_sof_dev *sdev, u32 msg_id)

sof_get_windows(sdev);

- return 0; + return sof_ipc_init_msg_memory(sdev); } EXPORT_SYMBOL(sof_fw_ready);

diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index efaec2989a27..ba341b1bda0c 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -526,6 +526,7 @@ int sof_ipc_tx_message(struct snd_sof_ipc *ipc, u32 header, int sof_ipc_tx_message_no_pm(struct snd_sof_ipc *ipc, u32 header, void *msg_data, size_t msg_bytes, void *reply_data, size_t reply_bytes); +int sof_ipc_init_msg_memory(struct snd_sof_dev *sdev);

/* * Trace/debug