The variables and structs for DMA trace can be moved local to ipc3-dtrace.c and the storage can be allocated dynamically, stored behind the fw_trace_data pointer.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Paul Olaru paul.olaru@oss.nxp.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/sof/ipc3-dtrace.c | 142 +++++++++++++++++++++++------------- sound/soc/sof/sof-priv.h | 16 ---- 2 files changed, 93 insertions(+), 65 deletions(-)
diff --git a/sound/soc/sof/ipc3-dtrace.c b/sound/soc/sof/ipc3-dtrace.c index 91a2792b9beb..b4e1343f9138 100644 --- a/sound/soc/sof/ipc3-dtrace.c +++ b/sound/soc/sof/ipc3-dtrace.c @@ -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; } }
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index d8d81e1ec259..9d7f53ff9c70 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -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 */