The SYSIRQ driver for FreeBSD provides support for the System Interrupt Controller (SYSIRQ) found on specific SoCs/platforms, typically in embedded ARM/ARM64 systems.
Derived from this code https://github.com/torvalds/linux/blob/master/drivers/irqchip/irq-mtk-sysirq.c
There is bug in ahci driver ( interupt storm)