# 调试

Source: [https://docs.qualcomm.com/doc/80-70015-20SC/topic/debug.html](https://docs.qualcomm.com/doc/80-70015-20SC/topic/debug.html)

以下主题中提供了 VPU 驱动程序和固件以及 GStreamer 视频插件的调试方法。

## 调试 VPU

Figure : 调试 VPU 工作流
                    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)

要调试 VPU 驱动程序和 VPU 固件，可执行以下操作：
1. 使用以下命令挂载 `debugfs` 节点：
mount -t debugfs none /sys/kernel/debug/Copy to clipboard
2. 选择 VPU 驱动程序调试日志级别和调试日志值，如下表所示。还可以使用调试日志值的位掩码选择多个调试日志级别。
| 调试日志级别 | 调试日志值 |
    | --- | --- |
    | VIDC\_ERR | 0x00000001 |
    | VIDC\_HIGH | 0x00000002 |
    | VIDC\_LOW | 0x00000004 |
    | VIDC\_PERF | 0x00000008 |
    | VIDC\_PKT | 0x00000010 |
    | VIDC\_BUS | 0x00000020 |
    | VIDC\_STAT | 0x00000040 |
    | VIDC\_ENCODER | 0x00000100 |
    | VIDC\_DECODER | 0x00000200 |
    | VIDC\_PRINTK | 0x10000000 |
    | VIDC\_FTRACE | 0x20000000 |

Note: VPU 驱动程序调试日志仅限于错误场景，默认调试级别设置为 `VIDC_ERR`。
3. 将 VPU 驱动程序调试日志值设置为 `/sys/module/iris_vpu/parameters/msm_vidc_debug` 节点。
    以下是启用所有消息级别的示例命令：

echo 0x1000037F > /sys/module/iris_vpu/parameters/msm_vidc_debugCopy to clipboard
4. 选择 VPU 固件调试日志级别和调试日志值，如下表所示。还可以使用调试日志值的位掩码选择多个调试日志级别。
| 调试日志级别 | 调试日志值 |
    | --- | --- |
    | FW\_LOW | 0x00000001 |
    | FW\_MED | 0x00000002 |
    | FW\_HIGH | 0x00000004 |
    | FW\_ERROR | 0x00000008 |
    | FW\_FATAL | 0x00000010 |
    | FW\_PERF | 0x00000020 |
    | FW\_CACHE\_LOW | 0x00000100 |
    | FW\_CACHE\_MED | 0x00000200 |
    | FW\_CACHE\_HIGH | 0x00000400 |
    | FW\_CACHE\_ERROR | 0x00000800 |
    | FW\_CACHE\_FATAL | 0x00001000 |
    | FW\_CACHE\_PERF | 0x00002000 |
    | FW\_PRINTK | 0x10000000 |
    | FW\_FTRACE | 0x20000000 |

Note: VPU 固件调试日志仅限于错误和致命场景，默认调试级别设置为 `FW_ERROR | FW_FATAL`。
5. 将 VPU 固件调试日志值设置为 `/sys/module/iris_vpu/parameters/msm_fw_debug` 节点。
    以下是启用所有消息级别的示例命令：

echo 0x1000037F > /sys/module/iris_vpu/parameters/msm_fw_debugCopy to clipboard
6. 使用以下命令开始捕获 VPU 驱动程序和固件的内核消息，并运行用例：
cat /proc/kmsgCopy to clipboard

## 调试 GStreamer 插件

Qualcomm GStreamer 视频插件符合标准 GStreamer 框架。有关 GStreamer 插件的调试方法的信息，参见[调试 GStreamer 插件](https://gstreamer.freedesktop.org/documentation/tutorials/basic/debugging-tools.html)。

Last Published: Dec 03, 2024

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