| // SPDX-License-Identifier: GPL-2.0-only |
| // |
| // Copyright(c) 2022 Intel Corporation. All rights reserved. |
| // |
| // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> |
| |
| #include <linux/debugfs.h> |
| #include <linux/sched/signal.h> |
| #include "sof-priv.h" |
| #include "sof-audio.h" |
| #include "ops.h" |
| #include "sof-utils.h" |
| #include "ipc3-priv.h" |
| |
| #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_INITIALIZING, |
| 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 bool trace_pos_update_expected(struct sof_dtrace_priv *priv) |
| { |
| if (priv->dtrace_state == SOF_DTRACE_ENABLED || |
| priv->dtrace_state == SOF_DTRACE_INITIALIZING) |
| return true; |
| |
| return false; |
| } |
| |
| 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) |
| { |
| if (*counter >= capacity) |
| return -ENOMEM; |
| |
| elem_list[*counter].key = key; |
| elem_list[*counter].value = value; |
| ++*counter; |
| |
| return 0; |
| } |
| |
| static int trace_filter_parse_entry(struct snd_sof_dev *sdev, const char *line, |
| struct sof_ipc_trace_filter_elem *elem, |
| int capacity, int *counter) |
| { |
| int log_level, pipe_id, comp_id, read, ret; |
| int len = strlen(line); |
| int cnt = *counter; |
| u32 uuid_id; |
| |
| /* ignore empty content */ |
| ret = sscanf(line, " %n", &read); |
| if (!ret && read == len) |
| return len; |
| |
| ret = sscanf(line, " %d %x %d %d %n", &log_level, &uuid_id, &pipe_id, &comp_id, &read); |
| if (ret != TRACE_FILTER_ELEMENTS_PER_ENTRY || read != len) { |
| dev_err(sdev->dev, "Invalid trace filter entry '%s'\n", line); |
| return -EINVAL; |
| } |
| |
| if (uuid_id > 0) { |
| ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_BY_UUID, |
| uuid_id, elem, capacity, &cnt); |
| if (ret) |
| return ret; |
| } |
| if (pipe_id >= 0) { |
| ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_BY_PIPE, |
| pipe_id, elem, capacity, &cnt); |
| if (ret) |
| return ret; |
| } |
| if (comp_id >= 0) { |
| ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_BY_COMP, |
| comp_id, elem, capacity, &cnt); |
| if (ret) |
| return ret; |
| } |
| |
| ret = trace_filter_append_elem(sdev, SOF_IPC_TRACE_FILTER_ELEM_SET_LEVEL | |
| SOF_IPC_TRACE_FILTER_ELEM_FIN, |
| log_level, elem, capacity, &cnt); |
| if (ret) |
| return ret; |
| |
| /* update counter only when parsing whole entry passed */ |
| *counter = cnt; |
| |
| return len; |
| } |
| |
| static int trace_filter_parse(struct snd_sof_dev *sdev, char *string, |
| int *out_elem_cnt, |
| struct sof_ipc_trace_filter_elem **out) |
| { |
| static const char entry_delimiter[] = ";"; |
| char *entry = string; |
| int capacity = 0; |
| int entry_len; |
| int cnt = 0; |
| |
| /* |
| * Each entry contains at least 1, up to TRACE_FILTER_ELEMENTS_PER_ENTRY |
| * IPC elements, depending on content. Calculate IPC elements capacity |
| * for the input string where each element is set. |
| */ |
| while (entry) { |
| capacity += TRACE_FILTER_ELEMENTS_PER_ENTRY; |
| entry = strchr(entry + 1, entry_delimiter[0]); |
| } |
| *out = kmalloc(capacity * sizeof(**out), GFP_KERNEL); |
| if (!*out) |
| return -ENOMEM; |
| |
| /* split input string by ';', and parse each entry separately in trace_filter_parse_entry */ |
| while ((entry = strsep(&string, entry_delimiter))) { |
| entry_len = trace_filter_parse_entry(sdev, entry, *out, capacity, &cnt); |
| if (entry_len < 0) { |
| dev_err(sdev->dev, |
| "Parsing filter entry '%s' failed with %d\n", |
| entry, entry_len); |
| return -EINVAL; |
| } |
| } |
| |
| *out_elem_cnt = cnt; |
| |
| return 0; |
| } |
| |
| static int ipc3_trace_update_filter(struct snd_sof_dev *sdev, int num_elems, |
| struct sof_ipc_trace_filter_elem *elems) |
| { |
| struct sof_ipc_trace_filter *msg; |
| struct sof_ipc_reply reply; |
| size_t size; |
| int ret; |
| |
| size = struct_size(msg, elems, num_elems); |
| if (size > SOF_IPC_MSG_MAX_SIZE) |
| return -EINVAL; |
| |
| msg = kmalloc(size, GFP_KERNEL); |
| if (!msg) |
| return -ENOMEM; |
| |
| msg->hdr.size = size; |
| msg->hdr.cmd = SOF_IPC_GLB_TRACE_MSG | SOF_IPC_TRACE_FILTER_UPDATE; |
| msg->elem_cnt = num_elems; |
| memcpy(&msg->elems[0], elems, num_elems * sizeof(*elems)); |
| |
| ret = pm_runtime_resume_and_get(sdev->dev); |
| if (ret < 0 && ret != -EACCES) { |
| dev_err(sdev->dev, "enabling device failed: %d\n", ret); |
| goto error; |
| } |
| ret = sof_ipc_tx_message(sdev->ipc, msg, msg->hdr.size, &reply, sizeof(reply)); |
| pm_runtime_mark_last_busy(sdev->dev); |
| pm_runtime_put_autosuspend(sdev->dev); |
| |
| error: |
| kfree(msg); |
| return ret ? ret : reply.error; |
| } |
| |
| static ssize_t dfsentry_trace_filter_write(struct file *file, const char __user *from, |
| size_t count, loff_t *ppos) |
| { |
| struct snd_sof_dfsentry *dfse = file->private_data; |
| struct sof_ipc_trace_filter_elem *elems = NULL; |
| struct snd_sof_dev *sdev = dfse->sdev; |
| loff_t pos = 0; |
| int num_elems; |
| char *string; |
| int ret; |
| |
| if (count > TRACE_FILTER_MAX_CONFIG_STRING_LENGTH) { |
| dev_err(sdev->dev, "%s too long input, %zu > %d\n", __func__, count, |
| TRACE_FILTER_MAX_CONFIG_STRING_LENGTH); |
| return -EINVAL; |
| } |
| |
| string = kmalloc(count + 1, GFP_KERNEL); |
| if (!string) |
| return -ENOMEM; |
| |
| /* assert null termination */ |
| string[count] = 0; |
| ret = simple_write_to_buffer(string, count, &pos, from, count); |
| if (ret < 0) |
| goto error; |
| |
| ret = trace_filter_parse(sdev, string, &num_elems, &elems); |
| if (ret < 0) |
| goto error; |
| |
| if (num_elems) { |
| ret = ipc3_trace_update_filter(sdev, num_elems, elems); |
| if (ret < 0) { |
| dev_err(sdev->dev, "Filter update failed: %d\n", ret); |
| goto error; |
| } |
| } |
| ret = count; |
| error: |
| kfree(string); |
| kfree(elems); |
| return ret; |
| } |
| |
| static const struct file_operations sof_dfs_trace_filter_fops = { |
| .open = simple_open, |
| .write = dfsentry_trace_filter_write, |
| .llseek = default_llseek, |
| }; |
| |
| static int debugfs_create_trace_filter(struct snd_sof_dev *sdev) |
| { |
| struct snd_sof_dfsentry *dfse; |
| |
| dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL); |
| if (!dfse) |
| return -ENOMEM; |
| |
| dfse->sdev = sdev; |
| dfse->type = SOF_DFSENTRY_TYPE_BUF; |
| |
| debugfs_create_file("filter", 0200, sdev->debugfs_root, dfse, |
| &sof_dfs_trace_filter_fops); |
| /* add to dfsentry list */ |
| list_add(&dfse->list, &sdev->dfsentry_list); |
| |
| return 0; |
| } |
| |
| static bool sof_dtrace_set_host_offset(struct sof_dtrace_priv *priv, u32 new_offset) |
| { |
| u32 host_offset = READ_ONCE(priv->host_offset); |
| |
| if (host_offset != new_offset) { |
| /* This is a bit paranoid and unlikely that it is needed */ |
| u32 ret = cmpxchg(&priv->host_offset, host_offset, new_offset); |
| |
| if (ret == host_offset) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static size_t sof_dtrace_avail(struct snd_sof_dev *sdev, |
| loff_t pos, size_t buffer_size) |
| { |
| 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 |
| * host DMA buffer has been wrapped. We should output the trace data |
| * at the end of host DMA buffer at first. |
| */ |
| if (host_offset < pos) |
| return buffer_size - pos; |
| |
| /* If there is available trace data now, it is unnecessary to wait. */ |
| if (host_offset > pos) |
| return host_offset - pos; |
| |
| return 0; |
| } |
| |
| static size_t sof_wait_dtrace_avail(struct snd_sof_dev *sdev, loff_t pos, |
| size_t buffer_size) |
| { |
| 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 (priv->dtrace_draining && !trace_pos_update_expected(priv)) { |
| /* |
| * tracing has ended and all traces have been |
| * read by client, return EOF |
| */ |
| 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(&priv->trace_sleep, &wait); |
| |
| if (!signal_pending(current)) { |
| /* set timeout to max value, no error code */ |
| schedule_timeout(MAX_SCHEDULE_TIMEOUT); |
| } |
| remove_wait_queue(&priv->trace_sleep, &wait); |
| |
| return sof_dtrace_avail(sdev, pos, buffer_size); |
| } |
| |
| static ssize_t dfsentry_dtrace_read(struct file *file, char __user *buffer, |
| size_t count, loff_t *ppos) |
| { |
| 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 */ |
| priv->dtrace_error = false; |
| |
| /* check pos and count */ |
| if (lpos < 0) |
| return -EINVAL; |
| if (!count) |
| return 0; |
| |
| /* check for buffer wrap and count overflow */ |
| lpos_64 = lpos; |
| lpos = do_div(lpos_64, buffer_size); |
| |
| /* get available count based on current host offset */ |
| avail = sof_wait_dtrace_avail(sdev, lpos, buffer_size); |
| if (priv->dtrace_error) { |
| dev_err(sdev->dev, "trace IO error\n"); |
| return -EIO; |
| } |
| |
| /* no new trace data */ |
| if (!avail) |
| return 0; |
| |
| /* make sure count is <= avail */ |
| if (count > avail) |
| count = avail; |
| |
| /* |
| * make sure that all trace data is available for the CPU as the trace |
| * data buffer might be allocated from non consistent memory. |
| * Note: snd_dma_buffer_sync() is called for normal audio playback and |
| * capture streams also. |
| */ |
| 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) |
| return -EFAULT; |
| |
| *ppos += count; |
| |
| /* move debugfs reading position */ |
| return count; |
| } |
| |
| 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 (priv->dtrace_state != SOF_DTRACE_ENABLED) |
| sof_dtrace_set_host_offset(priv, 0); |
| |
| return 0; |
| } |
| |
| static const struct file_operations sof_dfs_dtrace_fops = { |
| .open = simple_open, |
| .read = dfsentry_dtrace_read, |
| .llseek = default_llseek, |
| .release = dfsentry_dtrace_release, |
| }; |
| |
| 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); |
| |
| dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL); |
| if (!dfse) |
| return -ENOMEM; |
| |
| dfse->type = SOF_DFSENTRY_TYPE_BUF; |
| dfse->buf = priv->dmatb.area; |
| dfse->size = priv->dmatb.bytes; |
| dfse->sdev = sdev; |
| |
| debugfs_create_file("trace", 0444, sdev->debugfs_root, dfse, |
| &sof_dfs_dtrace_fops); |
| |
| return 0; |
| } |
| |
| 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; |
| struct sof_ipc_reply ipc_reply; |
| int ret; |
| |
| if (!sdev->fw_trace_is_supported) |
| return 0; |
| |
| if (priv->dtrace_state == SOF_DTRACE_ENABLED || !priv->dma_trace_pages) |
| return -EINVAL; |
| |
| if (priv->dtrace_state == SOF_DTRACE_STOPPED) |
| goto start; |
| |
| /* set IPC parameters */ |
| params.hdr.cmd = SOF_IPC_GLB_TRACE_MSG; |
| /* PARAMS_EXT is only supported from ABI 3.7.0 onwards */ |
| if (v->abi_version >= SOF_ABI_VER(3, 7, 0)) { |
| params.hdr.size = sizeof(struct sof_ipc_dma_trace_params_ext); |
| params.hdr.cmd |= SOF_IPC_TRACE_DMA_PARAMS_EXT; |
| params.timestamp_ns = ktime_get(); /* in nanosecond */ |
| } else { |
| params.hdr.size = sizeof(struct sof_ipc_dma_trace_params); |
| params.hdr.cmd |= SOF_IPC_TRACE_DMA_PARAMS; |
| } |
| params.buffer.phy_addr = priv->dmatp.addr; |
| params.buffer.size = priv->dmatb.bytes; |
| params.buffer.pages = priv->dma_trace_pages; |
| params.stream_tag = 0; |
| |
| sof_dtrace_set_host_offset(priv, 0); |
| priv->dtrace_draining = false; |
| |
| 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; |
| } |
| dev_dbg(sdev->dev, "stream_tag: %d\n", params.stream_tag); |
| |
| /* send IPC to the DSP */ |
| priv->dtrace_state = SOF_DTRACE_INITIALIZING; |
| ret = sof_ipc_tx_message(sdev->ipc, ¶ms, sizeof(params), &ipc_reply, sizeof(ipc_reply)); |
| if (ret < 0) { |
| dev_err(sdev->dev, "can't set params for DMA for trace %d\n", ret); |
| goto trace_release; |
| } |
| |
| start: |
| priv->dtrace_state = SOF_DTRACE_ENABLED; |
| |
| ret = sof_dtrace_host_trigger(sdev, SNDRV_PCM_TRIGGER_START); |
| if (ret < 0) { |
| dev_err(sdev->dev, "Host dtrace trigger start failed: %d\n", ret); |
| goto trace_release; |
| } |
| |
| return 0; |
| |
| trace_release: |
| priv->dtrace_state = SOF_DTRACE_DISABLED; |
| sof_dtrace_host_release(sdev); |
| return ret; |
| } |
| |
| 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 */ |
| priv->dtrace_state = SOF_DTRACE_DISABLED; |
| |
| /* allocate trace page table buffer */ |
| ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, sdev->dev, |
| PAGE_SIZE, &priv->dmatp); |
| if (ret < 0) { |
| dev_err(sdev->dev, "can't alloc page table for trace %d\n", ret); |
| return ret; |
| } |
| |
| /* 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, |
| &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, &priv->dmatb, |
| priv->dmatp.area, priv->dmatb.bytes); |
| if (ret < 0) |
| goto table_err; |
| |
| priv->dma_trace_pages = ret; |
| dev_dbg(sdev->dev, "dma_trace_pages: %d\n", priv->dma_trace_pages); |
| |
| if (sdev->first_boot) { |
| ret = debugfs_create_dtrace(sdev); |
| if (ret < 0) |
| goto table_err; |
| } |
| |
| init_waitqueue_head(&priv->trace_sleep); |
| |
| ret = ipc3_dtrace_enable(sdev); |
| if (ret < 0) |
| goto table_err; |
| |
| return 0; |
| table_err: |
| priv->dma_trace_pages = 0; |
| snd_dma_free_pages(&priv->dmatb); |
| page_err: |
| 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 (trace_pos_update_expected(priv) && |
| sof_dtrace_set_host_offset(priv, posn->host_offset)) |
| wake_up(&priv->trace_sleep); |
| |
| if (posn->overflow != 0) |
| dev_err(sdev->dev, |
| "DSP trace buffer overflow %u bytes. Total messages %d\n", |
| posn->overflow, posn->messages); |
| |
| return 0; |
| } |
| |
| /* an error has occurred within the DSP that prevents further trace */ |
| static void ipc3_dtrace_fw_crashed(struct snd_sof_dev *sdev) |
| { |
| 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 || 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); |
| priv->dtrace_state = SOF_DTRACE_STOPPED; |
| |
| /* |
| * stop and free trace DMA in the DSP. TRACE_DMA_FREE is only supported from |
| * ABI 3.20.0 onwards |
| */ |
| if (v->abi_version >= SOF_ABI_VER(3, 20, 0)) { |
| hdr.size = sizeof(hdr); |
| hdr.cmd = SOF_IPC_GLB_TRACE_MSG | SOF_IPC_TRACE_DMA_FREE; |
| |
| ret = sof_ipc_tx_message(sdev->ipc, &hdr, hdr.size, |
| &ipc_reply, sizeof(ipc_reply)); |
| if (ret < 0) |
| dev_err(sdev->dev, "DMA_TRACE_FREE failed with error: %d\n", ret); |
| } |
| |
| if (only_stop) |
| goto out; |
| |
| ret = sof_dtrace_host_release(sdev); |
| if (ret < 0) |
| dev_err(sdev->dev, "Host dtrace release failed %d\n", ret); |
| |
| priv->dtrace_state = SOF_DTRACE_DISABLED; |
| |
| out: |
| priv->dtrace_draining = true; |
| wake_up(&priv->trace_sleep); |
| } |
| |
| static void ipc3_dtrace_suspend(struct snd_sof_dev *sdev, pm_message_t pm_state) |
| { |
| ipc3_dtrace_release(sdev, pm_state.event == SOF_DSP_PM_D0); |
| } |
| |
| static int ipc3_dtrace_resume(struct snd_sof_dev *sdev) |
| { |
| return ipc3_dtrace_enable(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 (priv->dma_trace_pages) { |
| snd_dma_free_pages(&priv->dmatb); |
| snd_dma_free_pages(&priv->dmatp); |
| priv->dma_trace_pages = 0; |
| } |
| } |
| |
| const struct sof_ipc_fw_tracing_ops ipc3_dtrace_ops = { |
| .init = ipc3_dtrace_init, |
| .free = ipc3_dtrace_free, |
| .fw_crashed = ipc3_dtrace_fw_crashed, |
| .suspend = ipc3_dtrace_suspend, |
| .resume = ipc3_dtrace_resume, |
| }; |