git: 9front

ref: 2d8a8cc0e9d13fdb642960ae999ce2222af384c0
dir: /sys/src/9/lx2k/io.h/

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enum {
	IRQfiq		= -1,

	PPI		= 16,
	SPI		= 32,

	IRQcntps	= PPI+13,
	IRQcntpns	= PPI+14,

	IRQuart		= SPI+32,

	IRQusb1		= SPI+80,
	IRQusb2		= SPI+81,

	IRQpci3		= SPI+119,
	IRQpci5		= SPI+129,
};

#define BUSUNKNOWN (-1)
#define PCIWINDOW	0
#define	PCIWADDR(x)	(PADDR(x)+PCIWINDOW)