ASoC: SOF: add fw_info_box support

FW can share some information with host driver, .e.g fw status, pipeline
status and volume status. On ipc4 platform it is located in memory
windows 0 with size of struct sof_ipc4_fw_reg.

With this patch, ipc4 driver can find fw information in fw_info_box

Signed-off-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230202132954.26773-3-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sof/ipc4-priv.h b/sound/soc/sof/ipc4-priv.h
index 38bb3d7..8f8259a 100644 (file)
--- a/sound/soc/sof/ipc4-priv.h
+++ b/sound/soc/sof/ipc4-priv.h
@@ -14,6 +14,7 @@
 #include "sof-priv.h"
 
 /* The DSP window indices are fixed */
+#define SOF_IPC4_INBOX_WINDOW_IDX      0
 #define SOF_IPC4_OUTBOX_WINDOW_IDX     1
 #define SOF_IPC4_DEBUG_WINDOW_IDX      2
 

diff --git a/sound/soc/sof/ipc4.c b/sound/soc/sof/ipc4.c
index 35c9f39..f3c0c83 100644 (file)
--- a/sound/soc/sof/ipc4.c
+++ b/sound/soc/sof/ipc4.c
@@ -13,6 +13,7 @@
 #include <sound/sof/ipc4/header.h>
 #include "sof-priv.h"
 #include "sof-audio.h"
+#include "ipc4-fw-reg.h"
 #include "ipc4-priv.h"
 #include "ops.h"
 
@@ -542,6 +543,8 @@ static int ipc4_fw_ready(struct snd_sof_dev *sdev, struct sof_ipc4_msg *ipc4_msg
        outbox_offset = snd_sof_dsp_get_window_offset(sdev, SOF_IPC4_OUTBOX_WINDOW_IDX);
        outbox_size = SOF_IPC4_MSG_MAX_SIZE;
 
+       sdev->fw_info_box.offset = snd_sof_dsp_get_window_offset(sdev, SOF_IPC4_INBOX_WINDOW_IDX);
+       sdev->fw_info_box.size = sizeof(struct sof_ipc4_fw_registers);
        sdev->dsp_box.offset = inbox_offset;
        sdev->dsp_box.size = inbox_size;
        sdev->host_box.offset = outbox_offset;

diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 208a30f..fd1c3b1 100644 (file)
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -548,6 +548,7 @@ struct snd_sof_dev {
 
        /* IPC */
        struct snd_sof_ipc *ipc;
+       struct snd_sof_mailbox fw_info_box;     /* FW shared memory */
        struct snd_sof_mailbox dsp_box;         /* DSP initiated IPC */
        struct snd_sof_mailbox host_box;        /* Host initiated IPC */
        struct snd_sof_mailbox stream_box;      /* Stream position update */