@@ -15,6 +15,23 @@
#define TRACE_FILTER_ELEMENTS_PER_ENTRY 4
#define TRACE_FILTER_MAX_CONFIG_STRING_LENGTH 1024
+enum sof_dtrace_state {
+ SOF_DTRACE_DISABLED,
+ SOF_DTRACE_STOPPED,
+ SOF_DTRACE_ENABLED,
+};
+
+struct sof_dtrace_priv {
+ struct snd_dma_buffer dmatb;
+ struct snd_dma_buffer dmatp;
+ int dma_trace_pages;
+ wait_queue_head_t trace_sleep;
+ u32 host_offset;
+ bool dtrace_error;
+ bool dtrace_draining;
+ enum sof_dtrace_state dtrace_state;
+};
+
static int trace_filter_append_elem(struct snd_sof_dev *sdev, u32 key, u32 value,
struct sof_ipc_trace_filter_elem *elem_list,
int capacity, int *counter)
@@ -228,7 +245,8 @@ static int debugfs_create_trace_filter(struct snd_sof_dev *sdev)
static size_t sof_dtrace_avail(struct snd_sof_dev *sdev,
loff_t pos, size_t buffer_size)
{
- loff_t host_offset = READ_ONCE(sdev->host_offset);
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
+ loff_t host_offset = READ_ONCE(priv->host_offset);
/*
* If host offset is less than local pos, it means write pointer of
@@ -248,32 +266,33 @@ static size_t sof_dtrace_avail(struct snd_sof_dev *sdev,
static size_t sof_wait_dtrace_avail(struct snd_sof_dev *sdev, loff_t pos,
size_t buffer_size)
{
- wait_queue_entry_t wait;
size_t ret = sof_dtrace_avail(sdev, pos, buffer_size);
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
+ wait_queue_entry_t wait;
/* data immediately available */
if (ret)
return ret;
- if (sdev->dtrace_state != SOF_DTRACE_ENABLED && sdev->dtrace_draining) {
+ if (priv->dtrace_state != SOF_DTRACE_ENABLED && priv->dtrace_draining) {
/*
* tracing has ended and all traces have been
* read by client, return EOF
*/
- sdev->dtrace_draining = false;
+ priv->dtrace_draining = false;
return 0;
}
/* wait for available trace data from FW */
init_waitqueue_entry(&wait, current);
set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&sdev->trace_sleep, &wait);
+ add_wait_queue(&priv->trace_sleep, &wait);
if (!signal_pending(current)) {
/* set timeout to max value, no error code */
schedule_timeout(MAX_SCHEDULE_TIMEOUT);
}
- remove_wait_queue(&sdev->trace_sleep, &wait);
+ remove_wait_queue(&priv->trace_sleep, &wait);
return sof_dtrace_avail(sdev, pos, buffer_size);
}
@@ -283,13 +302,14 @@ static ssize_t dfsentry_dtrace_read(struct file *file, char __user *buffer,
{
struct snd_sof_dfsentry *dfse = file->private_data;
struct snd_sof_dev *sdev = dfse->sdev;
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
unsigned long rem;
loff_t lpos = *ppos;
size_t avail, buffer_size = dfse->size;
u64 lpos_64;
/* make sure we know about any failures on the DSP side */
- sdev->dtrace_error = false;
+ priv->dtrace_error = false;
/* check pos and count */
if (lpos < 0)
@@ -303,7 +323,7 @@ static ssize_t dfsentry_dtrace_read(struct file *file, char __user *buffer,
/* get available count based on current host offset */
avail = sof_wait_dtrace_avail(sdev, lpos, buffer_size);
- if (sdev->dtrace_error) {
+ if (priv->dtrace_error) {
dev_err(sdev->dev, "trace IO error\n");
return -EIO;
}
@@ -318,7 +338,7 @@ static ssize_t dfsentry_dtrace_read(struct file *file, char __user *buffer,
* Note: snd_dma_buffer_sync() is called for normal audio playback and
* capture streams also.
*/
- snd_dma_buffer_sync(&sdev->dmatb, SNDRV_DMA_SYNC_CPU);
+ snd_dma_buffer_sync(&priv->dmatb, SNDRV_DMA_SYNC_CPU);
/* copy available trace data to debugfs */
rem = copy_to_user(buffer, ((u8 *)(dfse->buf) + lpos), count);
if (rem)
@@ -334,10 +354,11 @@ static int dfsentry_dtrace_release(struct inode *inode, struct file *file)
{
struct snd_sof_dfsentry *dfse = inode->i_private;
struct snd_sof_dev *sdev = dfse->sdev;
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
/* avoid duplicate traces at next open */
- if (sdev->dtrace_state != SOF_DTRACE_ENABLED)
- sdev->host_offset = 0;
+ if (priv->dtrace_state != SOF_DTRACE_ENABLED)
+ priv->host_offset = 0;
return 0;
}
@@ -351,12 +372,15 @@ static const struct file_operations sof_dfs_dtrace_fops = {
static int debugfs_create_dtrace(struct snd_sof_dev *sdev)
{
+ struct sof_dtrace_priv *priv;
struct snd_sof_dfsentry *dfse;
int ret;
if (!sdev)
return -EINVAL;
+ priv = sdev->fw_trace_data;
+
ret = debugfs_create_trace_filter(sdev);
if (ret < 0)
dev_warn(sdev->dev, "failed to create filter debugfs file: %d", ret);
@@ -366,8 +390,8 @@ static int debugfs_create_dtrace(struct snd_sof_dev *sdev)
return -ENOMEM;
dfse->type = SOF_DFSENTRY_TYPE_BUF;
- dfse->buf = sdev->dmatb.area;
- dfse->size = sdev->dmatb.bytes;
+ dfse->buf = priv->dmatb.area;
+ dfse->size = priv->dmatb.bytes;
dfse->sdev = sdev;
debugfs_create_file("trace", 0444, sdev->debugfs_root, dfse,
@@ -378,6 +402,7 @@ static int debugfs_create_dtrace(struct snd_sof_dev *sdev)
static int ipc3_dtrace_enable(struct snd_sof_dev *sdev)
{
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
struct sof_ipc_fw_version *v = &ready->version;
struct sof_ipc_dma_trace_params_ext params;
@@ -387,10 +412,10 @@ static int ipc3_dtrace_enable(struct snd_sof_dev *sdev)
if (!sdev->fw_trace_is_supported)
return 0;
- if (sdev->dtrace_state == SOF_DTRACE_ENABLED || !sdev->dma_trace_pages)
+ if (priv->dtrace_state == SOF_DTRACE_ENABLED || !priv->dma_trace_pages)
return -EINVAL;
- if (sdev->dtrace_state == SOF_DTRACE_STOPPED)
+ if (priv->dtrace_state == SOF_DTRACE_STOPPED)
goto start;
/* set IPC parameters */
@@ -404,15 +429,15 @@ static int ipc3_dtrace_enable(struct snd_sof_dev *sdev)
params.hdr.size = sizeof(struct sof_ipc_dma_trace_params);
params.hdr.cmd |= SOF_IPC_TRACE_DMA_PARAMS;
}
- params.buffer.phy_addr = sdev->dmatp.addr;
- params.buffer.size = sdev->dmatb.bytes;
- params.buffer.pages = sdev->dma_trace_pages;
+ params.buffer.phy_addr = priv->dmatp.addr;
+ params.buffer.size = priv->dmatb.bytes;
+ params.buffer.pages = priv->dma_trace_pages;
params.stream_tag = 0;
- sdev->host_offset = 0;
- sdev->dtrace_draining = false;
+ priv->host_offset = 0;
+ priv->dtrace_draining = false;
- ret = sof_dtrace_host_init(sdev, &sdev->dmatb, ¶ms);
+ ret = sof_dtrace_host_init(sdev, &priv->dmatb, ¶ms);
if (ret < 0) {
dev_err(sdev->dev, "Host dtrace init failed: %d\n", ret);
return ret;
@@ -433,7 +458,7 @@ static int ipc3_dtrace_enable(struct snd_sof_dev *sdev)
goto trace_release;
}
- sdev->dtrace_state = SOF_DTRACE_ENABLED;
+ priv->dtrace_state = SOF_DTRACE_ENABLED;
return 0;
@@ -444,18 +469,30 @@ static int ipc3_dtrace_enable(struct snd_sof_dev *sdev)
static int ipc3_dtrace_init(struct snd_sof_dev *sdev)
{
+ struct sof_dtrace_priv *priv;
int ret;
/* dtrace is only supported with SOF_IPC */
if (sdev->pdata->ipc_type != SOF_IPC)
return -EOPNOTSUPP;
+ if (sdev->fw_trace_data) {
+ dev_err(sdev->dev, "fw_trace_data has been already allocated\n");
+ return -EBUSY;
+ }
+
+ priv = devm_kzalloc(sdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ sdev->fw_trace_data = priv;
+
/* set false before start initialization */
- sdev->dtrace_state = SOF_DTRACE_DISABLED;
+ priv->dtrace_state = SOF_DTRACE_DISABLED;
/* allocate trace page table buffer */
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, sdev->dev,
- PAGE_SIZE, &sdev->dmatp);
+ PAGE_SIZE, &priv->dmatp);
if (ret < 0) {
dev_err(sdev->dev, "can't alloc page table for trace %d\n", ret);
return ret;
@@ -464,21 +501,21 @@ static int ipc3_dtrace_init(struct snd_sof_dev *sdev)
/* allocate trace data buffer */
ret = snd_dma_alloc_dir_pages(SNDRV_DMA_TYPE_DEV_SG, sdev->dev,
DMA_FROM_DEVICE, DMA_BUF_SIZE_FOR_TRACE,
- &sdev->dmatb);
+ &priv->dmatb);
if (ret < 0) {
dev_err(sdev->dev, "can't alloc buffer for trace %d\n", ret);
goto page_err;
}
/* create compressed page table for audio firmware */
- ret = snd_sof_create_page_table(sdev->dev, &sdev->dmatb,
- sdev->dmatp.area, sdev->dmatb.bytes);
+ ret = snd_sof_create_page_table(sdev->dev, &priv->dmatb,
+ priv->dmatp.area, priv->dmatb.bytes);
if (ret < 0)
goto table_err;
- sdev->dma_trace_pages = ret;
+ priv->dma_trace_pages = ret;
dev_dbg(sdev->dev, "%s: dma_trace_pages: %d\n", __func__,
- sdev->dma_trace_pages);
+ priv->dma_trace_pages);
if (sdev->first_boot) {
ret = debugfs_create_dtrace(sdev);
@@ -486,7 +523,7 @@ static int ipc3_dtrace_init(struct snd_sof_dev *sdev)
goto table_err;
}
- init_waitqueue_head(&sdev->trace_sleep);
+ init_waitqueue_head(&priv->trace_sleep);
ret = ipc3_dtrace_enable(sdev);
if (ret < 0)
@@ -494,23 +531,25 @@ static int ipc3_dtrace_init(struct snd_sof_dev *sdev)
return 0;
table_err:
- sdev->dma_trace_pages = 0;
- snd_dma_free_pages(&sdev->dmatb);
+ priv->dma_trace_pages = 0;
+ snd_dma_free_pages(&priv->dmatb);
page_err:
- snd_dma_free_pages(&sdev->dmatp);
+ snd_dma_free_pages(&priv->dmatp);
return ret;
}
int ipc3_dtrace_posn_update(struct snd_sof_dev *sdev,
struct sof_ipc_dma_trace_posn *posn)
{
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
+
if (!sdev->fw_trace_is_supported)
return 0;
- if (sdev->dtrace_state == SOF_DTRACE_ENABLED &&
- sdev->host_offset != posn->host_offset) {
- sdev->host_offset = posn->host_offset;
- wake_up(&sdev->trace_sleep);
+ if (priv->dtrace_state == SOF_DTRACE_ENABLED &&
+ priv->host_offset != posn->host_offset) {
+ priv->host_offset = posn->host_offset;
+ wake_up(&priv->trace_sleep);
}
if (posn->overflow != 0)
@@ -524,27 +563,30 @@ int ipc3_dtrace_posn_update(struct snd_sof_dev *sdev,
/* an error has occurred within the DSP that prevents further trace */
static void ipc3_dtrace_fw_crashed(struct snd_sof_dev *sdev)
{
- if (sdev->dtrace_state == SOF_DTRACE_ENABLED) {
- sdev->dtrace_error = true;
- wake_up(&sdev->trace_sleep);
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
+
+ if (priv->dtrace_state == SOF_DTRACE_ENABLED) {
+ priv->dtrace_error = true;
+ wake_up(&priv->trace_sleep);
}
}
static void ipc3_dtrace_release(struct snd_sof_dev *sdev, bool only_stop)
{
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
struct sof_ipc_fw_version *v = &ready->version;
struct sof_ipc_cmd_hdr hdr;
struct sof_ipc_reply ipc_reply;
int ret;
- if (!sdev->fw_trace_is_supported || sdev->dtrace_state == SOF_DTRACE_DISABLED)
+ if (!sdev->fw_trace_is_supported || priv->dtrace_state == SOF_DTRACE_DISABLED)
return;
ret = sof_dtrace_host_trigger(sdev, SNDRV_PCM_TRIGGER_STOP);
if (ret < 0)
dev_err(sdev->dev, "Host dtrace trigger stop failed: %d\n", ret);
- sdev->dtrace_state = SOF_DTRACE_STOPPED;
+ priv->dtrace_state = SOF_DTRACE_STOPPED;
/*
* stop and free trace DMA in the DSP. TRACE_DMA_FREE is only supported from
@@ -567,11 +609,11 @@ static void ipc3_dtrace_release(struct snd_sof_dev *sdev, bool only_stop)
if (ret < 0)
dev_err(sdev->dev, "Host dtrace release failed %d\n", ret);
- sdev->dtrace_state = SOF_DTRACE_DISABLED;
+ priv->dtrace_state = SOF_DTRACE_DISABLED;
out:
- sdev->dtrace_draining = true;
- wake_up(&sdev->trace_sleep);
+ priv->dtrace_draining = true;
+ wake_up(&priv->trace_sleep);
}
static void ipc3_dtrace_suspend(struct snd_sof_dev *sdev, pm_message_t pm_state)
@@ -586,13 +628,15 @@ static int ipc3_dtrace_resume(struct snd_sof_dev *sdev)
static void ipc3_dtrace_free(struct snd_sof_dev *sdev)
{
+ struct sof_dtrace_priv *priv = sdev->fw_trace_data;
+
/* release trace */
ipc3_dtrace_release(sdev, false);
- if (sdev->dma_trace_pages) {
- snd_dma_free_pages(&sdev->dmatb);
- snd_dma_free_pages(&sdev->dmatp);
- sdev->dma_trace_pages = 0;
+ if (priv->dma_trace_pages) {
+ snd_dma_free_pages(&priv->dmatb);
+ snd_dma_free_pages(&priv->dmatp);
+ priv->dma_trace_pages = 0;
}
}
@@ -461,12 +461,6 @@ struct snd_sof_ipc {
const struct sof_ipc_ops *ops;
};
-enum sof_dtrace_state {
- SOF_DTRACE_DISABLED,
- SOF_DTRACE_STOPPED,
- SOF_DTRACE_ENABLED,
-};
-
/*
* SOF Device Level.
*/
@@ -551,16 +545,6 @@ struct snd_sof_dev {
bool fw_trace_is_supported; /* set with Kconfig or module parameter */
void *fw_trace_data; /* private data used by firmware tracing implementation */
- /* DMA for Trace */
- struct snd_dma_buffer dmatb;
- struct snd_dma_buffer dmatp;
- int dma_trace_pages;
- wait_queue_head_t trace_sleep;
- u32 host_offset;
- bool dtrace_error;
- bool dtrace_draining;
- enum sof_dtrace_state dtrace_state;
-
bool msi_enabled;
/* DSP core context */