ASoC: SOF: ipc: Add max_payload_size field in struct snd_sof_ipc

The max_payload_size is an IPC level constraint. Add a new field,
max_payload_size to struct snd_sof_ipc and set it during IPC init.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220330201926.1330402-4-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c
index 5f57536..af2efc1 100644 (file)
--- a/sound/soc/sof/ipc.c
+++ b/sound/soc/sof/ipc.c
@@ -1005,6 +1005,8 @@ int sof_ipc_init_msg_memory(struct snd_sof_dev *sdev)
        if (!msg->reply_data)
                return -ENOMEM;
 
+       sdev->ipc->max_payload_size = SOF_IPC_MSG_MAX_SIZE;
+
        return 0;
 }
 

diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 93de554..f75c6f7 100644 (file)
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -394,6 +394,9 @@ struct snd_sof_ipc {
        /* disables further sending of ipc's */
        bool disable_ipc_tx;
 
+       /* Maximum allowed size of a single IPC message/reply */
+       size_t max_payload_size;
+
        struct snd_sof_ipc_msg msg;
 
        /* IPC ops based on version */