13ce240a93
Although FW crash logs are already supported for dumping in driver, the logs may not be sufficient to analyze field issues. To improve this part, we add a support to dump FW memory. When driver receives FW crash notifications, driver uses DDMA, which is a HW ability, to copy specified FW memory to FW fifo. Driver can then dump these information from FW fifo. With this support, not only FW crash log but also specified FW memory will be dumped while FW crash. Besides, specified registers are also dumped. This feature is implemeted on 8822C first due to difference of FW layouts between ICs. In addition, we add a debugfs to trigger FW crash. It can simulate the process of crash, dump and reset. Through it, we can also check if a reset is ongoing. Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20210309060121.9099-1-pkshih@realtek.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.