ref: e655f4b8bdd9da0c51bd4bece8a2ea2088e57236
dir: /sys/src/9/sgi/io.h/
enum {
Mhz = 1000*1000,
};
#define IO(t,x) ((t*)(KSEG1|((ulong)x)))
/* Interrupts */
#define IRQGIO0 0
#define IRQSCSI 1
#define IRQSCSI1 2
#define IRQENET 3
#define IRQGDMA 4
#define IRQPLP 5
#define IRQGIO1 6
#define IRQLCL2 7
#define IRQISDN_ISAC 8
#define IRQPOWER 9
#define IRQISDN_HSCX 10
#define IRQLCL3 11
#define IRQHPCDMA 12
#define IRQACFAIL 13
#define IRQVIDEO 14
#define IRQGIO2 15
#define IRQEISA 19
#define IRQKBDMS 20
#define IRQDUART 21
#define IRQDRAIN0 22
#define IRQDRAIN1 23
#define IRQGIOEXP0 22
#define IRQGIOEXP1 23
/*
* Local Interrupt registers (INT2)
*/
#define INT2_IP20 0x1fb801c0
#define INT2_IP22 0x1fbd9000
#define INT2_IP24 0x1fbd9880
#define INT2_BASE INT2_IP24 /* indy */
#define LIO_0_ISR (INT2_BASE+0x3)
#define LIO_0_MASK (INT2_BASE+0x7)
#define LIO_1_ISR (INT2_BASE+0xb)
#define LIO_1_MASK (INT2_BASE+0xf)
#define LIO_2_ISR (INT2_BASE+0x13)
#define LIO_2_MASK (INT2_BASE+0x17)
#define HPC3_ETHER 0x1fb80000
#define HPC3_KBDMS 0x1fbd9800
#define GIO_NEWPORT 0x1f0f0000 /* indy */
#define MEMCFG0 0x1fa000c4 /* mem. size config. reg. 0 (w, rw) */
#define MEMCFG1 0x1fa000cc /* mem. size config. reg. 1 (w, rw) */