diff options
| -rw-r--r-- | sound/soc/sof/ipc.c | 85 |
1 files changed, 44 insertions, 41 deletions
diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c index 16a0d7a059f3..ee56d4fa4053 100644 --- a/sound/soc/sof/ipc.c +++ b/sound/soc/sof/ipc.c @@ -18,8 +18,10 @@ #include "sof-audio.h" #include "ops.h" -static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_type); -static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd); +typedef void (*ipc_rx_callback)(struct snd_sof_dev *sdev, void *msg_buf); + +static void ipc_trace_message(struct snd_sof_dev *sdev, void *msg_buf); +static void ipc_stream_message(struct snd_sof_dev *sdev, void *msg_buf); /* * IPC message Tx/Rx message handling. @@ -477,44 +479,30 @@ void snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id) } EXPORT_SYMBOL(snd_sof_ipc_reply); -static void ipc_comp_notification(struct snd_sof_dev *sdev, - struct sof_ipc_cmd_hdr *hdr) +static void ipc_comp_notification(struct snd_sof_dev *sdev, void *msg_buf) { + struct sof_ipc_cmd_hdr *hdr = msg_buf; u32 msg_type = hdr->cmd & SOF_CMD_TYPE_MASK; - struct sof_ipc_ctrl_data *cdata; - int ret; switch (msg_type) { case SOF_IPC_COMP_GET_VALUE: case SOF_IPC_COMP_GET_DATA: - cdata = kmalloc(hdr->size, GFP_KERNEL); - if (!cdata) - return; - - /* read back full message */ - ret = snd_sof_ipc_msg_data(sdev, NULL, cdata, hdr->size); - if (ret < 0) { - dev_err(sdev->dev, - "error: failed to read component event: %d\n", ret); - goto err; - } break; default: dev_err(sdev->dev, "error: unhandled component message %#x\n", msg_type); return; } - snd_sof_control_notify(sdev, cdata); - -err: - kfree(cdata); + snd_sof_control_notify(sdev, msg_buf); } /* DSP firmware has sent host a message */ void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev) { + ipc_rx_callback rx_callback = NULL; struct sof_ipc_cmd_hdr hdr; - u32 cmd, type; + void *msg_buf; + u32 cmd; int err; /* read back header */ @@ -523,10 +511,15 @@ void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev) dev_warn(sdev->dev, "failed to read IPC header: %d\n", err); return; } + + if (hdr.size < sizeof(hdr)) { + dev_err(sdev->dev, "The received message size is invalid\n"); + return; + } + ipc_log_header(sdev->dev, "ipc rx", hdr.cmd); cmd = hdr.cmd & SOF_GLB_TYPE_MASK; - type = hdr.cmd & SOF_CMD_TYPE_MASK; /* check message type */ switch (cmd) { @@ -551,20 +544,35 @@ void snd_sof_ipc_msgs_rx(struct snd_sof_dev *sdev) case SOF_IPC_GLB_PM_MSG: break; case SOF_IPC_GLB_COMP_MSG: - ipc_comp_notification(sdev, &hdr); + rx_callback = ipc_comp_notification; break; case SOF_IPC_GLB_STREAM_MSG: - /* need to pass msg id into the function */ - ipc_stream_message(sdev, hdr.cmd); + rx_callback = ipc_stream_message; break; case SOF_IPC_GLB_TRACE_MSG: - ipc_trace_message(sdev, type); + rx_callback = ipc_trace_message; break; default: - dev_err(sdev->dev, "error: unknown DSP message 0x%x\n", cmd); + dev_err(sdev->dev, "%s: Unknown DSP message: 0x%x\n", __func__, cmd); break; } + if (rx_callback) { + /* read the full message as we have rx handler for it */ + msg_buf = kmalloc(hdr.size, GFP_KERNEL); + if (!msg_buf) + return; + + err = snd_sof_ipc_msg_data(sdev, NULL, msg_buf, hdr.size); + if (err < 0) + dev_err(sdev->dev, "%s: Failed to read message: %d\n", + __func__, err); + else + rx_callback(sdev, msg_buf); + + kfree(msg_buf); + } + ipc_log_header(sdev->dev, "ipc rx done", hdr.cmd); } EXPORT_SYMBOL(snd_sof_ipc_msgs_rx); @@ -573,19 +581,14 @@ EXPORT_SYMBOL(snd_sof_ipc_msgs_rx); * IPC trace mechanism. */ -static void ipc_trace_message(struct snd_sof_dev *sdev, u32 msg_type) +static void ipc_trace_message(struct snd_sof_dev *sdev, void *msg_buf) { - struct sof_ipc_dma_trace_posn posn; - int ret; + struct sof_ipc_cmd_hdr *hdr = msg_buf; + u32 msg_type = hdr->cmd & SOF_CMD_TYPE_MASK; switch (msg_type) { case SOF_IPC_TRACE_DMA_POSITION: - /* read back full message */ - ret = snd_sof_ipc_msg_data(sdev, NULL, &posn, sizeof(posn)); - if (ret < 0) - dev_warn(sdev->dev, "failed to read trace position: %d\n", ret); - else - snd_sof_trace_update_pos(sdev, &posn); + snd_sof_trace_update_pos(sdev, msg_buf); break; default: dev_err(sdev->dev, "error: unhandled trace message %#x\n", msg_type); @@ -667,11 +670,11 @@ static void ipc_xrun(struct snd_sof_dev *sdev, u32 msg_id) } /* stream notifications from DSP FW */ -static void ipc_stream_message(struct snd_sof_dev *sdev, u32 msg_cmd) +static void ipc_stream_message(struct snd_sof_dev *sdev, void *msg_buf) { - /* get msg cmd type and msd id */ - u32 msg_type = msg_cmd & SOF_CMD_TYPE_MASK; - u32 msg_id = SOF_IPC_MESSAGE_ID(msg_cmd); + struct sof_ipc_cmd_hdr *hdr = msg_buf; + u32 msg_type = hdr->cmd & SOF_CMD_TYPE_MASK; + u32 msg_id = SOF_IPC_MESSAGE_ID(hdr->cmd); switch (msg_type) { case SOF_IPC_STREAM_POSITION: |