234a557e28
The current code is using a fixed mapping between the LS7A interrupt source and the HT interrupt vector. This prevents the utilization of the full interrupt vector space and therefore limits the number of interrupt source in a system. Replace the fixed mapping with a dynamic mapping which allocates a vector when an interrupt source is set up. This avoids that unused sources prevent vectors from being used for other devices. Introduce a mapping table in struct pch_pic, where each interrupt source will allocate an index as a 'hwirq' number from the table in the order of application and set table value as interrupt source number. This hwirq number will be configured as vector in the HT interrupt controller. For an interrupt source, the validity period of the obtained hwirq will last until the system reset. Co-developed-by: Biao Dong <dongbiao@loongson.cn> Signed-off-by: Biao Dong <dongbiao@loongson.cn> Co-developed-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Baoqi Zhang <zhangbaoqi@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240422093830.27212-1-zhangtianyang@loongson.cn
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 reStructuredText 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.