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Kernel: Introduce IRQ sharing support

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The support is very basic - Each component that needs to handle IRQs
inherits from InterruptHandler class. When the InterruptHandler
constructor is called it registers itself in a SharedInterruptHandler.
When an IRQ is fired, the SharedInterruptHandler is invoked, then it
iterates through a list of the registered InterruptHandlers.

Also, InterruptEnabler class was created to provide a way to enable IRQ
handling temporarily, similar to InterruptDisabler (in CPU.h, which does
the opposite).

In addition to that a PCI::Device class has been added, that inherits
from InterruptHandler.
This commit is contained in:
Liav A 2020-01-21 13:20:16 +02:00 • committed by Andreas Kling
commit 1ee37245cd
Notes: sideshowbarker 2024-07-19 09:53:59 +09:00
7 changed files with 399 additions and 0 deletions
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1
Kernel/PCI/Definitions.h
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@ -178,5 +178,6 @@ class Access;
class MMIOAccess;
class IOAccess;
class MMIOSegment;
class Device;
}