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825 lines
20 KiB
825 lines
20 KiB
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) |
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// |
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// This file is provided under a dual BSD/GPLv2 license. When using or |
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// redistributing this file, you may do so under either license. |
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// |
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// Copyright(c) 2018 Intel Corporation. All rights reserved. |
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// |
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// Author: Liam Girdwood <[email protected]> |
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// |
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// Generic debug routines used to export DSP MMIO and memories to userspace |
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// for firmware debugging. |
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// |
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|
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#include <linux/debugfs.h> |
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#include <linux/io.h> |
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#include <linux/pm_runtime.h> |
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#include <sound/sof/ext_manifest.h> |
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#include <sound/sof/debug.h> |
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#include "sof-priv.h" |
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#include "ops.h" |
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|
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) |
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#include "probe.h" |
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|
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/** |
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* strsplit_u32 - Split string into sequence of u32 tokens |
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* @buf: String to split into tokens. |
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* @delim: String containing delimiter characters. |
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* @tkns: Returned u32 sequence pointer. |
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* @num_tkns: Returned number of tokens obtained. |
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*/ |
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static int |
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strsplit_u32(char **buf, const char *delim, u32 **tkns, size_t *num_tkns) |
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{ |
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char *s; |
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u32 *data, *tmp; |
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size_t count = 0; |
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size_t cap = 32; |
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int ret = 0; |
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*tkns = NULL; |
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*num_tkns = 0; |
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data = kcalloc(cap, sizeof(*data), GFP_KERNEL); |
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if (!data) |
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return -ENOMEM; |
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|
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while ((s = strsep(buf, delim)) != NULL) { |
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ret = kstrtouint(s, 0, data + count); |
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if (ret) |
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goto exit; |
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if (++count >= cap) { |
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cap *= 2; |
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tmp = krealloc(data, cap * sizeof(*data), GFP_KERNEL); |
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if (!tmp) { |
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ret = -ENOMEM; |
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goto exit; |
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} |
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data = tmp; |
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} |
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} |
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if (!count) |
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goto exit; |
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*tkns = kmemdup(data, count * sizeof(*data), GFP_KERNEL); |
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if (*tkns == NULL) { |
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ret = -ENOMEM; |
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goto exit; |
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} |
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*num_tkns = count; |
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|
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exit: |
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kfree(data); |
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return ret; |
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} |
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static int tokenize_input(const char __user *from, size_t count, |
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loff_t *ppos, u32 **tkns, size_t *num_tkns) |
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{ |
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char *buf; |
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int ret; |
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buf = kmalloc(count + 1, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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ret = simple_write_to_buffer(buf, count, ppos, from, count); |
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if (ret != count) { |
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ret = ret >= 0 ? -EIO : ret; |
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goto exit; |
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} |
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buf[count] = '\0'; |
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ret = strsplit_u32((char **)&buf, ",", tkns, num_tkns); |
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exit: |
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kfree(buf); |
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return ret; |
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} |
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static ssize_t probe_points_read(struct file *file, |
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char __user *to, size_t count, loff_t *ppos) |
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{ |
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struct snd_sof_dfsentry *dfse = file->private_data; |
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struct snd_sof_dev *sdev = dfse->sdev; |
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struct sof_probe_point_desc *desc; |
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size_t num_desc, len = 0; |
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char *buf; |
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int i, ret; |
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if (sdev->extractor_stream_tag == SOF_PROBE_INVALID_NODE_ID) { |
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dev_warn(sdev->dev, "no extractor stream running\n"); |
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return -ENOENT; |
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} |
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buf = kzalloc(PAGE_SIZE, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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ret = sof_ipc_probe_points_info(sdev, &desc, &num_desc); |
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if (ret < 0) |
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goto exit; |
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for (i = 0; i < num_desc; i++) { |
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ret = snprintf(buf + len, PAGE_SIZE - len, |
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"Id: %#010x Purpose: %d Node id: %#x\n", |
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desc[i].buffer_id, desc[i].purpose, desc[i].stream_tag); |
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if (ret < 0) |
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goto free_desc; |
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len += ret; |
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} |
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ret = simple_read_from_buffer(to, count, ppos, buf, len); |
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free_desc: |
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kfree(desc); |
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exit: |
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kfree(buf); |
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return ret; |
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} |
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static ssize_t probe_points_write(struct file *file, |
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const char __user *from, size_t count, loff_t *ppos) |
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{ |
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struct snd_sof_dfsentry *dfse = file->private_data; |
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struct snd_sof_dev *sdev = dfse->sdev; |
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struct sof_probe_point_desc *desc; |
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size_t num_tkns, bytes; |
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u32 *tkns; |
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int ret; |
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if (sdev->extractor_stream_tag == SOF_PROBE_INVALID_NODE_ID) { |
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dev_warn(sdev->dev, "no extractor stream running\n"); |
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return -ENOENT; |
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} |
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ret = tokenize_input(from, count, ppos, &tkns, &num_tkns); |
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if (ret < 0) |
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return ret; |
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bytes = sizeof(*tkns) * num_tkns; |
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if (!num_tkns || (bytes % sizeof(*desc))) { |
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ret = -EINVAL; |
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goto exit; |
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} |
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desc = (struct sof_probe_point_desc *)tkns; |
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ret = sof_ipc_probe_points_add(sdev, |
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desc, bytes / sizeof(*desc)); |
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if (!ret) |
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ret = count; |
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exit: |
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kfree(tkns); |
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return ret; |
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} |
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static const struct file_operations probe_points_fops = { |
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.open = simple_open, |
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.read = probe_points_read, |
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.write = probe_points_write, |
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.llseek = default_llseek, |
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}; |
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static ssize_t probe_points_remove_write(struct file *file, |
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const char __user *from, size_t count, loff_t *ppos) |
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{ |
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struct snd_sof_dfsentry *dfse = file->private_data; |
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struct snd_sof_dev *sdev = dfse->sdev; |
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size_t num_tkns; |
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u32 *tkns; |
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int ret; |
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if (sdev->extractor_stream_tag == SOF_PROBE_INVALID_NODE_ID) { |
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dev_warn(sdev->dev, "no extractor stream running\n"); |
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return -ENOENT; |
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} |
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ret = tokenize_input(from, count, ppos, &tkns, &num_tkns); |
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if (ret < 0) |
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return ret; |
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if (!num_tkns) { |
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ret = -EINVAL; |
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goto exit; |
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} |
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ret = sof_ipc_probe_points_remove(sdev, tkns, num_tkns); |
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if (!ret) |
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ret = count; |
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exit: |
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kfree(tkns); |
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return ret; |
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} |
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static const struct file_operations probe_points_remove_fops = { |
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.open = simple_open, |
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.write = probe_points_remove_write, |
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.llseek = default_llseek, |
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}; |
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static int snd_sof_debugfs_probe_item(struct snd_sof_dev *sdev, |
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const char *name, mode_t mode, |
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const struct file_operations *fops) |
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{ |
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struct snd_sof_dfsentry *dfse; |
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dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL); |
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if (!dfse) |
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return -ENOMEM; |
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dfse->type = SOF_DFSENTRY_TYPE_BUF; |
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dfse->sdev = sdev; |
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debugfs_create_file(name, mode, sdev->debugfs_root, dfse, fops); |
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/* add to dfsentry list */ |
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list_add(&dfse->list, &sdev->dfsentry_list); |
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return 0; |
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} |
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#endif |
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST) |
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#define MAX_IPC_FLOOD_DURATION_MS 1000 |
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#define MAX_IPC_FLOOD_COUNT 10000 |
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#define IPC_FLOOD_TEST_RESULT_LEN 512 |
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static int sof_debug_ipc_flood_test(struct snd_sof_dev *sdev, |
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struct snd_sof_dfsentry *dfse, |
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bool flood_duration_test, |
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unsigned long ipc_duration_ms, |
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unsigned long ipc_count) |
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{ |
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struct sof_ipc_cmd_hdr hdr; |
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struct sof_ipc_reply reply; |
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u64 min_response_time = U64_MAX; |
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ktime_t start, end, test_end; |
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u64 avg_response_time = 0; |
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u64 max_response_time = 0; |
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u64 ipc_response_time; |
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int i = 0; |
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int ret; |
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/* configure test IPC */ |
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hdr.cmd = SOF_IPC_GLB_TEST_MSG | SOF_IPC_TEST_IPC_FLOOD; |
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hdr.size = sizeof(hdr); |
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/* set test end time for duration flood test */ |
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if (flood_duration_test) |
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test_end = ktime_get_ns() + ipc_duration_ms * NSEC_PER_MSEC; |
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/* send test IPC's */ |
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while (1) { |
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start = ktime_get(); |
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ret = sof_ipc_tx_message(sdev->ipc, hdr.cmd, &hdr, hdr.size, |
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&reply, sizeof(reply)); |
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end = ktime_get(); |
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if (ret < 0) |
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break; |
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/* compute min and max response times */ |
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ipc_response_time = ktime_to_ns(ktime_sub(end, start)); |
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min_response_time = min(min_response_time, ipc_response_time); |
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max_response_time = max(max_response_time, ipc_response_time); |
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/* sum up response times */ |
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avg_response_time += ipc_response_time; |
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i++; |
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/* test complete? */ |
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if (flood_duration_test) { |
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if (ktime_to_ns(end) >= test_end) |
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break; |
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} else { |
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if (i == ipc_count) |
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break; |
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} |
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} |
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if (ret < 0) |
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dev_err(sdev->dev, |
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"error: ipc flood test failed at %d iterations\n", i); |
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/* return if the first IPC fails */ |
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if (!i) |
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return ret; |
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/* compute average response time */ |
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do_div(avg_response_time, i); |
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|
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/* clear previous test output */ |
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memset(dfse->cache_buf, 0, IPC_FLOOD_TEST_RESULT_LEN); |
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if (flood_duration_test) { |
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dev_dbg(sdev->dev, "IPC Flood test duration: %lums\n", |
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ipc_duration_ms); |
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snprintf(dfse->cache_buf, IPC_FLOOD_TEST_RESULT_LEN, |
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"IPC Flood test duration: %lums\n", ipc_duration_ms); |
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} |
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dev_dbg(sdev->dev, |
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"IPC Flood count: %d, Avg response time: %lluns\n", |
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i, avg_response_time); |
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dev_dbg(sdev->dev, "Max response time: %lluns\n", |
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max_response_time); |
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dev_dbg(sdev->dev, "Min response time: %lluns\n", |
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min_response_time); |
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/* format output string */ |
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snprintf(dfse->cache_buf + strlen(dfse->cache_buf), |
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IPC_FLOOD_TEST_RESULT_LEN - strlen(dfse->cache_buf), |
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"IPC Flood count: %d\nAvg response time: %lluns\n", |
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i, avg_response_time); |
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snprintf(dfse->cache_buf + strlen(dfse->cache_buf), |
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IPC_FLOOD_TEST_RESULT_LEN - strlen(dfse->cache_buf), |
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"Max response time: %lluns\nMin response time: %lluns\n", |
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max_response_time, min_response_time); |
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return ret; |
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} |
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#endif |
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static ssize_t sof_dfsentry_write(struct file *file, const char __user *buffer, |
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size_t count, loff_t *ppos) |
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{ |
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST) |
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struct snd_sof_dfsentry *dfse = file->private_data; |
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struct snd_sof_dev *sdev = dfse->sdev; |
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unsigned long ipc_duration_ms = 0; |
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bool flood_duration_test = false; |
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unsigned long ipc_count = 0; |
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struct dentry *dentry; |
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int err; |
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#endif |
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size_t size; |
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char *string; |
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int ret; |
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string = kzalloc(count+1, GFP_KERNEL); |
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if (!string) |
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return -ENOMEM; |
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size = simple_write_to_buffer(string, count, ppos, buffer, count); |
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ret = size; |
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST) |
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/* |
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* write op is only supported for ipc_flood_count or |
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* ipc_flood_duration_ms debugfs entries atm. |
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* ipc_flood_count floods the DSP with the number of IPC's specified. |
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* ipc_duration_ms test floods the DSP for the time specified |
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* in the debugfs entry. |
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*/ |
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dentry = file->f_path.dentry; |
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if (strcmp(dentry->d_name.name, "ipc_flood_count") && |
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strcmp(dentry->d_name.name, "ipc_flood_duration_ms")) { |
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ret = -EINVAL; |
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goto out; |
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} |
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if (!strcmp(dentry->d_name.name, "ipc_flood_duration_ms")) |
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flood_duration_test = true; |
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/* test completion criterion */ |
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if (flood_duration_test) |
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ret = kstrtoul(string, 0, &ipc_duration_ms); |
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else |
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ret = kstrtoul(string, 0, &ipc_count); |
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if (ret < 0) |
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goto out; |
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/* limit max duration/ipc count for flood test */ |
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if (flood_duration_test) { |
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if (!ipc_duration_ms) { |
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ret = size; |
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goto out; |
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} |
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/* find the minimum. min() is not used to avoid warnings */ |
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if (ipc_duration_ms > MAX_IPC_FLOOD_DURATION_MS) |
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ipc_duration_ms = MAX_IPC_FLOOD_DURATION_MS; |
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} else { |
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if (!ipc_count) { |
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ret = size; |
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goto out; |
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} |
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/* find the minimum. min() is not used to avoid warnings */ |
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if (ipc_count > MAX_IPC_FLOOD_COUNT) |
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ipc_count = MAX_IPC_FLOOD_COUNT; |
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} |
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ret = pm_runtime_get_sync(sdev->dev); |
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if (ret < 0 && ret != -EACCES) { |
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dev_err_ratelimited(sdev->dev, |
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"error: debugfs write failed to resume %d\n", |
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ret); |
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pm_runtime_put_noidle(sdev->dev); |
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goto out; |
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} |
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/* flood test */ |
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ret = sof_debug_ipc_flood_test(sdev, dfse, flood_duration_test, |
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ipc_duration_ms, ipc_count); |
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pm_runtime_mark_last_busy(sdev->dev); |
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err = pm_runtime_put_autosuspend(sdev->dev); |
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if (err < 0) |
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dev_err_ratelimited(sdev->dev, |
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"error: debugfs write failed to idle %d\n", |
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err); |
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|
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/* return size if test is successful */ |
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if (ret >= 0) |
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ret = size; |
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out: |
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#endif |
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kfree(string); |
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return ret; |
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} |
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static ssize_t sof_dfsentry_read(struct file *file, char __user *buffer, |
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size_t count, loff_t *ppos) |
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{ |
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struct snd_sof_dfsentry *dfse = file->private_data; |
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struct snd_sof_dev *sdev = dfse->sdev; |
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loff_t pos = *ppos; |
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size_t size_ret; |
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int skip = 0; |
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int size; |
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u8 *buf; |
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST) |
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struct dentry *dentry; |
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dentry = file->f_path.dentry; |
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if ((!strcmp(dentry->d_name.name, "ipc_flood_count") || |
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!strcmp(dentry->d_name.name, "ipc_flood_duration_ms"))) { |
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if (*ppos) |
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return 0; |
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count = strlen(dfse->cache_buf); |
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size_ret = copy_to_user(buffer, dfse->cache_buf, count); |
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if (size_ret) |
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return -EFAULT; |
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|
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*ppos += count; |
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return count; |
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} |
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#endif |
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size = dfse->size; |
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|
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/* validate position & count */ |
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if (pos < 0) |
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return -EINVAL; |
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if (pos >= size || !count) |
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return 0; |
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/* find the minimum. min() is not used since it adds sparse warnings */ |
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if (count > size - pos) |
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count = size - pos; |
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|
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/* align io read start to u32 multiple */ |
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pos = ALIGN_DOWN(pos, 4); |
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|
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/* intermediate buffer size must be u32 multiple */ |
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size = ALIGN(count, 4); |
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|
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/* if start position is unaligned, read extra u32 */ |
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if (unlikely(pos != *ppos)) { |
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skip = *ppos - pos; |
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if (pos + size + 4 < dfse->size) |
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size += 4; |
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} |
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|
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buf = kzalloc(size, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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|
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if (dfse->type == SOF_DFSENTRY_TYPE_IOMEM) { |
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) |
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/* |
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* If the DSP is active: copy from IO. |
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* If the DSP is suspended: |
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* - Copy from IO if the memory is always accessible. |
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* - Otherwise, copy from cached buffer. |
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*/ |
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if (pm_runtime_active(sdev->dev) || |
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dfse->access_type == SOF_DEBUGFS_ACCESS_ALWAYS) { |
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memcpy_fromio(buf, dfse->io_mem + pos, size); |
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} else { |
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dev_info(sdev->dev, |
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"Copying cached debugfs data\n"); |
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memcpy(buf, dfse->cache_buf + pos, size); |
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} |
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#else |
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/* if the DSP is in D3 */ |
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if (!pm_runtime_active(sdev->dev) && |
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dfse->access_type == SOF_DEBUGFS_ACCESS_D0_ONLY) { |
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dev_err(sdev->dev, |
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"error: debugfs entry cannot be read in DSP D3\n"); |
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kfree(buf); |
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return -EINVAL; |
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} |
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|
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memcpy_fromio(buf, dfse->io_mem + pos, size); |
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#endif |
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} else { |
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memcpy(buf, ((u8 *)(dfse->buf) + pos), size); |
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} |
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|
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/* copy to userspace */ |
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size_ret = copy_to_user(buffer, buf + skip, count); |
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|
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kfree(buf); |
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|
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/* update count & position if copy succeeded */ |
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if (size_ret) |
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return -EFAULT; |
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|
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*ppos = pos + count; |
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|
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return count; |
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} |
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|
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static const struct file_operations sof_dfs_fops = { |
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.open = simple_open, |
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.read = sof_dfsentry_read, |
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.llseek = default_llseek, |
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.write = sof_dfsentry_write, |
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}; |
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|
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/* create FS entry for debug files that can expose DSP memories, registers */ |
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int snd_sof_debugfs_io_item(struct snd_sof_dev *sdev, |
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void __iomem *base, size_t size, |
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const char *name, |
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enum sof_debugfs_access_type access_type) |
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{ |
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struct snd_sof_dfsentry *dfse; |
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|
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if (!sdev) |
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return -EINVAL; |
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|
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dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL); |
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if (!dfse) |
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return -ENOMEM; |
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|
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dfse->type = SOF_DFSENTRY_TYPE_IOMEM; |
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dfse->io_mem = base; |
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dfse->size = size; |
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dfse->sdev = sdev; |
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dfse->access_type = access_type; |
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|
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) |
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/* |
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* allocate cache buffer that will be used to save the mem window |
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* contents prior to suspend |
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*/ |
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if (access_type == SOF_DEBUGFS_ACCESS_D0_ONLY) { |
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dfse->cache_buf = devm_kzalloc(sdev->dev, size, GFP_KERNEL); |
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if (!dfse->cache_buf) |
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return -ENOMEM; |
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} |
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#endif |
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|
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debugfs_create_file(name, 0444, sdev->debugfs_root, dfse, |
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&sof_dfs_fops); |
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|
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/* add to dfsentry list */ |
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list_add(&dfse->list, &sdev->dfsentry_list); |
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|
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(snd_sof_debugfs_io_item); |
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|
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/* create FS entry for debug files to expose kernel memory */ |
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int snd_sof_debugfs_buf_item(struct snd_sof_dev *sdev, |
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void *base, size_t size, |
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const char *name, mode_t mode) |
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{ |
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struct snd_sof_dfsentry *dfse; |
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|
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if (!sdev) |
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return -EINVAL; |
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|
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dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL); |
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if (!dfse) |
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return -ENOMEM; |
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|
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dfse->type = SOF_DFSENTRY_TYPE_BUF; |
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dfse->buf = base; |
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dfse->size = size; |
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dfse->sdev = sdev; |
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|
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST) |
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if (!strncmp(name, "ipc_flood", strlen("ipc_flood"))) { |
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/* |
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* cache_buf is unused for SOF_DFSENTRY_TYPE_BUF debugfs entries. |
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* So, use it to save the results of the last IPC flood test. |
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*/ |
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dfse->cache_buf = devm_kzalloc(sdev->dev, IPC_FLOOD_TEST_RESULT_LEN, |
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GFP_KERNEL); |
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if (!dfse->cache_buf) |
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return -ENOMEM; |
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} |
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#endif |
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|
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debugfs_create_file(name, mode, sdev->debugfs_root, dfse, |
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&sof_dfs_fops); |
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/* add to dfsentry list */ |
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list_add(&dfse->list, &sdev->dfsentry_list); |
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|
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(snd_sof_debugfs_buf_item); |
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|
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static int memory_info_update(struct snd_sof_dev *sdev, char *buf, size_t buff_size) |
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{ |
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struct sof_ipc_cmd_hdr msg = { |
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.size = sizeof(struct sof_ipc_cmd_hdr), |
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.cmd = SOF_IPC_GLB_DEBUG | SOF_IPC_DEBUG_MEM_USAGE, |
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}; |
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struct sof_ipc_dbg_mem_usage *reply; |
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int len; |
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int ret; |
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int i; |
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|
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reply = kmalloc(SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL); |
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if (!reply) |
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return -ENOMEM; |
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|
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ret = pm_runtime_get_sync(sdev->dev); |
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if (ret < 0 && ret != -EACCES) { |
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pm_runtime_put_noidle(sdev->dev); |
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dev_err(sdev->dev, "error: enabling device failed: %d\n", ret); |
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goto error; |
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} |
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|
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ret = sof_ipc_tx_message(sdev->ipc, msg.cmd, &msg, msg.size, reply, SOF_IPC_MSG_MAX_SIZE); |
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pm_runtime_mark_last_busy(sdev->dev); |
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pm_runtime_put_autosuspend(sdev->dev); |
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if (ret < 0 || reply->rhdr.error < 0) { |
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ret = min(ret, reply->rhdr.error); |
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dev_err(sdev->dev, "error: reading memory info failed, %d\n", ret); |
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goto error; |
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} |
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|
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if (struct_size(reply, elems, reply->num_elems) != reply->rhdr.hdr.size) { |
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dev_err(sdev->dev, "error: invalid memory info ipc struct size, %d\n", |
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reply->rhdr.hdr.size); |
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ret = -EINVAL; |
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goto error; |
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} |
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|
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for (i = 0, len = 0; i < reply->num_elems; i++) { |
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ret = snprintf(buf + len, buff_size - len, "zone %d.%d used %#8x free %#8x\n", |
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reply->elems[i].zone, reply->elems[i].id, |
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reply->elems[i].used, reply->elems[i].free); |
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if (ret < 0) |
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goto error; |
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len += ret; |
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} |
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|
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ret = len; |
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error: |
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kfree(reply); |
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return ret; |
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} |
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|
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static ssize_t memory_info_read(struct file *file, char __user *to, size_t count, loff_t *ppos) |
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{ |
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struct snd_sof_dfsentry *dfse = file->private_data; |
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struct snd_sof_dev *sdev = dfse->sdev; |
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int data_length; |
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|
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/* read memory info from FW only once for each file read */ |
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if (!*ppos) { |
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dfse->buf_data_size = 0; |
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data_length = memory_info_update(sdev, dfse->buf, dfse->size); |
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if (data_length < 0) |
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return data_length; |
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dfse->buf_data_size = data_length; |
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} |
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|
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return simple_read_from_buffer(to, count, ppos, dfse->buf, dfse->buf_data_size); |
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} |
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|
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static int memory_info_open(struct inode *inode, struct file *file) |
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{ |
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struct snd_sof_dfsentry *dfse = inode->i_private; |
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struct snd_sof_dev *sdev = dfse->sdev; |
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|
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file->private_data = dfse; |
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|
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/* allocate buffer memory only in first open run, to save memory when unused */ |
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if (!dfse->buf) { |
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dfse->buf = devm_kmalloc(sdev->dev, PAGE_SIZE, GFP_KERNEL); |
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if (!dfse->buf) |
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return -ENOMEM; |
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dfse->size = PAGE_SIZE; |
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} |
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|
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return 0; |
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} |
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|
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static const struct file_operations memory_info_fops = { |
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.open = memory_info_open, |
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.read = memory_info_read, |
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.llseek = default_llseek, |
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}; |
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|
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int snd_sof_dbg_memory_info_init(struct snd_sof_dev *sdev) |
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{ |
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struct snd_sof_dfsentry *dfse; |
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|
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dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL); |
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if (!dfse) |
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return -ENOMEM; |
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|
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/* don't allocate buffer before first usage, to save memory when unused */ |
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dfse->type = SOF_DFSENTRY_TYPE_BUF; |
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dfse->sdev = sdev; |
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|
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debugfs_create_file("memory_info", 0444, sdev->debugfs_root, dfse, &memory_info_fops); |
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|
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/* add to dfsentry list */ |
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list_add(&dfse->list, &sdev->dfsentry_list); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(snd_sof_dbg_memory_info_init); |
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|
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int snd_sof_dbg_init(struct snd_sof_dev *sdev) |
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{ |
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const struct snd_sof_dsp_ops *ops = sof_ops(sdev); |
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const struct snd_sof_debugfs_map *map; |
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int i; |
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int err; |
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|
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/* use "sof" as top level debugFS dir */ |
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sdev->debugfs_root = debugfs_create_dir("sof", NULL); |
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|
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/* init dfsentry list */ |
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INIT_LIST_HEAD(&sdev->dfsentry_list); |
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|
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/* create debugFS files for platform specific MMIO/DSP memories */ |
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for (i = 0; i < ops->debug_map_count; i++) { |
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map = &ops->debug_map[i]; |
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|
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err = snd_sof_debugfs_io_item(sdev, sdev->bar[map->bar] + |
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map->offset, map->size, |
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map->name, map->access_type); |
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/* errors are only due to memory allocation, not debugfs */ |
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if (err < 0) |
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return err; |
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} |
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|
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) |
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err = snd_sof_debugfs_probe_item(sdev, "probe_points", |
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0644, &probe_points_fops); |
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if (err < 0) |
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return err; |
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err = snd_sof_debugfs_probe_item(sdev, "probe_points_remove", |
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0200, &probe_points_remove_fops); |
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if (err < 0) |
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return err; |
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#endif |
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|
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST) |
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/* create read-write ipc_flood_count debugfs entry */ |
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err = snd_sof_debugfs_buf_item(sdev, NULL, 0, |
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"ipc_flood_count", 0666); |
|
|
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/* errors are only due to memory allocation, not debugfs */ |
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if (err < 0) |
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return err; |
|
|
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/* create read-write ipc_flood_duration_ms debugfs entry */ |
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err = snd_sof_debugfs_buf_item(sdev, NULL, 0, |
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"ipc_flood_duration_ms", 0666); |
|
|
|
/* errors are only due to memory allocation, not debugfs */ |
|
if (err < 0) |
|
return err; |
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#endif |
|
|
|
return 0; |
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} |
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EXPORT_SYMBOL_GPL(snd_sof_dbg_init); |
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|
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void snd_sof_free_debug(struct snd_sof_dev *sdev) |
|
{ |
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debugfs_remove_recursive(sdev->debugfs_root); |
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} |
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EXPORT_SYMBOL_GPL(snd_sof_free_debug); |
|
|
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void snd_sof_handle_fw_exception(struct snd_sof_dev *sdev) |
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{ |
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if (IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_RETAIN_DSP_CONTEXT) || |
|
(sof_core_debug & SOF_DBG_RETAIN_CTX)) { |
|
/* should we prevent DSP entering D3 ? */ |
|
dev_info(sdev->dev, "info: preventing DSP entering D3 state to preserve context\n"); |
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pm_runtime_get_noresume(sdev->dev); |
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} |
|
|
|
/* dump vital information to the logs */ |
|
snd_sof_dsp_dbg_dump(sdev, SOF_DBG_DUMP_REGS | SOF_DBG_DUMP_MBOX); |
|
snd_sof_ipc_dump(sdev); |
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snd_sof_trace_notify_for_error(sdev); |
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} |
|
EXPORT_SYMBOL(snd_sof_handle_fw_exception);
|
|
|