diff options
Diffstat (limited to 'ioapic.h')
| -rw-r--r-- | ioapic.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/ioapic.h b/ioapic.h new file mode 100644 index 0000000..cd2fd5c --- /dev/null +++ b/ioapic.h @@ -0,0 +1,90 @@ +#define IO_APIC_BASE 0xFEC00000 /* default physical locations of an IO APIC */ +#define IOAPIC_WINDOW 0x10 /* window register offset */ + +/* constants relating to APIC ID registers */ +#define APIC_ID_MASK 0xff000000 +#define APIC_ID_SHIFT 24 +#define APIC_ID_CLUSTER 0xf0 +#define APIC_ID_CLUSTER_ID 0x0f +#define APIC_MAX_CLUSTER 0xe +#define APIC_MAX_INTRACLUSTER_ID 3 +#define APIC_ID_CLUSTER_SHIFT 4 + +/* fields in VER */ +#define APIC_VER_VERSION 0x000000ff +#define APIC_VER_MAXLVT 0x00ff0000 +#define MAXLVTSHIFT 16 + +/* Indexes into IO APIC */ +#define IOAPIC_ID 0x00 +#define IOAPIC_VER 0x01 +#define IOAPIC_ARB 0x02 +#define IOAPIC_REDTBL 0x10 +#define IOAPIC_REDTBL0 IOAPIC_REDTBL +#define IOAPIC_REDTBL1 (IOAPIC_REDTBL+0x02) +#define IOAPIC_REDTBL2 (IOAPIC_REDTBL+0x04) +#define IOAPIC_REDTBL3 (IOAPIC_REDTBL+0x06) +#define IOAPIC_REDTBL4 (IOAPIC_REDTBL+0x08) +#define IOAPIC_REDTBL5 (IOAPIC_REDTBL+0x0a) +#define IOAPIC_REDTBL6 (IOAPIC_REDTBL+0x0c) +#define IOAPIC_REDTBL7 (IOAPIC_REDTBL+0x0e) +#define IOAPIC_REDTBL8 (IOAPIC_REDTBL+0x10) +#define IOAPIC_REDTBL9 (IOAPIC_REDTBL+0x12) +#define IOAPIC_REDTBL10 (IOAPIC_REDTBL+0x14) +#define IOAPIC_REDTBL11 (IOAPIC_REDTBL+0x16) +#define IOAPIC_REDTBL12 (IOAPIC_REDTBL+0x18) +#define IOAPIC_REDTBL13 (IOAPIC_REDTBL+0x1a) +#define IOAPIC_REDTBL14 (IOAPIC_REDTBL+0x1c) +#define IOAPIC_REDTBL15 (IOAPIC_REDTBL+0x1e) +#define IOAPIC_REDTBL16 (IOAPIC_REDTBL+0x20) +#define IOAPIC_REDTBL17 (IOAPIC_REDTBL+0x22) +#define IOAPIC_REDTBL18 (IOAPIC_REDTBL+0x24) +#define IOAPIC_REDTBL19 (IOAPIC_REDTBL+0x26) +#define IOAPIC_REDTBL20 (IOAPIC_REDTBL+0x28) +#define IOAPIC_REDTBL21 (IOAPIC_REDTBL+0x2a) +#define IOAPIC_REDTBL22 (IOAPIC_REDTBL+0x2c) +#define IOAPIC_REDTBL23 (IOAPIC_REDTBL+0x2e) + +/* + * fields in the IO APIC's redirection table entries + */ +#define IOART_DEST APIC_ID_MASK /* broadcast addr: all APICs */ + +#define IOART_RESV 0x00fe0000 /* reserved */ + +#define IOART_INTMASK 0x00010000 /* R/W: INTerrupt mask */ +#define IOART_INTMCLR 0x00000000 /* clear, allow INTs */ +#define IOART_INTMSET 0x00010000 /* set, inhibit INTs */ + +#define IOART_TRGRMOD 0x00008000 /* R/W: trigger mode */ +#define IOART_TRGREDG 0x00000000 /* edge */ +#define IOART_TRGRLVL 0x00008000 /* level */ + +#define IOART_REM_IRR 0x00004000 /* RO: remote IRR */ + +#define IOART_INTPOL 0x00002000 /* R/W: INT input pin polarity */ +#define IOART_INTAHI 0x00000000 /* active high */ +#define IOART_INTALO 0x00002000 /* active low */ + +#define IOART_DELIVS 0x00001000 /* RO: delivery status */ + +#define IOART_DESTMOD 0x00000800 /* R/W: destination mode */ +#define IOART_DESTPHY 0x00000000 /* physical */ +#define IOART_DESTLOG 0x00000800 /* logical */ + +#define IOART_DELMOD 0x00000700 /* R/W: delivery mode */ +#define IOART_DELFIXED 0x00000000 /* fixed */ +#define IOART_DELLOPRI 0x00000100 /* lowest priority */ +#define IOART_DELSMI 0x00000200 /* System Management INT */ +#define IOART_DELRSV1 0x00000300 /* reserved */ +#define IOART_DELNMI 0x00000400 /* NMI signal */ +#define IOART_DELINIT 0x00000500 /* INIT signal */ +#define IOART_DELRSV2 0x00000600 /* reserved */ +#define IOART_DELEXINT 0x00000700 /* External INTerrupt */ + +#define IOART_INTVEC 0x000000ff /* R/W: INTerrupt vector field */ + +/* fields in VER */ +#define IOART_VER_VERSION 0x000000ff +#define IOART_VER_MAXREDIR 0x00ff0000 +#define MAXREDIRSHIFT 16 |