1 files changed, 225 insertions, 0 deletions
diff --git a/os/pc/mp.h b/os/pc/mp.h
new file mode 100644
index 00000000..9195c9e9
--- /dev/null
+++ b/os/pc/mp.h
@@ -0,0 +1,225 @@
+/*
+ * MultiProcessor Specification Version 1.[14].
+ */
+typedef struct {			/* floating pointer */
+	uchar	signature[4];		/* "_MP_" */
+	long	physaddr;		/* physical address of MP configuration table */
+	uchar	length;			/* 1 */
+	uchar	specrev;		/* [14] */
+	uchar	checksum;		/* all bytes must add up to 0 */
+	uchar	type;			/* MP system configuration type */
+	uchar	imcrp;
+	uchar	reserved[3];
+} _MP_;
+
+typedef struct {			/* configuration table header */
+	uchar	signature[4];		/* "PCMP" */
+	ushort	length;			/* total table length */
+	uchar	version;		/* [14] */
+	uchar	checksum;		/* all bytes must add up to 0 */
+	uchar	product[20];		/* product id */
+	ulong	oemtable;		/* OEM table pointer */
+	ushort	oemlength;		/* OEM table length */
+	ushort	entry;			/* entry count */
+	ulong	lapicbase;		/* address of local APIC */
+	ushort	xlength;		/* extended table length */
+	uchar	xchecksum;		/* extended table checksum */
+	uchar	reserved;
+} PCMP;
+
+typedef struct {			/* processor table entry */
+	uchar	type;			/* entry type (0) */
+	uchar	apicno;			/* local APIC id */
+	uchar	version;		/* local APIC verison */
+	uchar	flags;			/* CPU flags */
+	uchar	signature[4];		/* CPU signature */
+	ulong	feature;		/* feature flags from CPUID instruction */
+	uchar	reserved[8];
+} PCMPprocessor;
+
+typedef struct {			/* bus table entry */
+	uchar	type;			/* entry type (1) */
+	uchar	busno;			/* bus id */
+	char	string[6];		/* bus type string */
+} PCMPbus;
+
+typedef struct {			/* I/O APIC table entry */
+	uchar	type;			/* entry type (2) */
+	uchar	apicno;			/* I/O APIC id */
+	uchar	version;		/* I/O APIC version */
+	uchar	flags;			/* I/O APIC flags */
+	ulong	addr;			/* I/O APIC address */
+} PCMPioapic;
+
+typedef struct {			/* interrupt table entry */
+	uchar	type;			/* entry type ([34]) */
+	uchar	intr;			/* interrupt type */
+	ushort	flags;			/* interrupt flag */
+	uchar	busno;			/* source bus id */
+	uchar	irq;			/* source bus irq */
+	uchar	apicno;			/* destination APIC id */
+	uchar	intin;			/* destination APIC [L]INTIN# */
+} PCMPintr;
+
+typedef struct {			/* system address space mapping entry */
+	uchar	type;			/* entry type (128) */
+	uchar	length;			/* of this entry (20) */
+	uchar	busno;			/* bus id */
+	uchar	addrtype;
+	ulong	addrbase[2];
+	ulong	addrlength[2];
+} PCMPsasm;
+
+typedef struct {			/* bus hierarchy descriptor entry */
+	uchar	type;			/* entry type (129) */
+	uchar	length;			/* of this entry (8) */
+	uchar	busno;			/* bus id */
+	uchar	info;			/* bus info */
+	uchar	parent;			/* parent bus */
+	uchar	reserved[3];
+} PCMPhierarchy;
+
+typedef struct {			/* compatibility bus address space modifier entry */
+	uchar	type;			/* entry type (130) */
+	uchar	length;			/* of this entry (8) */
+	uchar	busno;			/* bus id */
+	uchar	modifier;		/* address modifier */
+	ulong	range;			/* predefined range list */
+} PCMPcbasm;
+
+enum {					/* table entry types */
+	PcmpPROCESSOR	= 0x00,		/* one entry per processor */
+	PcmpBUS		= 0x01,		/* one entry per bus */
+	PcmpIOAPIC	= 0x02,		/* one entry per I/O APIC */
+	PcmpIOINTR	= 0x03,		/* one entry per bus interrupt source */
+	PcmpLINTR	= 0x04,		/* one entry per system interrupt source */
+
+	PcmpSASM	= 0x80,
+	PcmpHIERARCHY	= 0x81,
+	PcmpCBASM	= 0x82,
+
+					/* PCMPprocessor and PCMPioapic flags */
+	PcmpEN		= 0x01,		/* enabled */
+	PcmpBP		= 0x02,		/* bootstrap processor */
+
+					/* PCMPiointr and PCMPlintr flags */
+	PcmpPOMASK	= 0x03,		/* polarity conforms to specifications of bus */
+	PcmpHIGH	= 0x01,		/* active high */
+	PcmpLOW		= 0x03,		/* active low */
+	PcmpELMASK	= 0x0C,		/* trigger mode of APIC input signals */
+	PcmpEDGE	= 0x04,		/* edge-triggered */
+	PcmpLEVEL	= 0x0C,		/* level-triggered */
+
+					/* PCMPiointr and PCMPlintr interrupt type */
+	PcmpINT		= 0x00,		/* vectored interrupt from APIC Rdt */
+	PcmpNMI		= 0x01,		/* non-maskable interrupt */
+	PcmpSMI		= 0x02,		/* system management interrupt */
+	PcmpExtINT	= 0x03,		/* vectored interrupt from external PIC */
+
+					/* PCMPsasm addrtype */
+	PcmpIOADDR	= 0x00,		/* I/O address */
+	PcmpMADDR	= 0x01,		/* memory address */
+	PcmpPADDR	= 0x02,		/* prefetch address */
+
+					/* PCMPhierarchy info */
+	PcmpSD		= 0x01,		/* subtractive decode bus */
+
+					/* PCMPcbasm modifier */
+	PcmpPR		= 0x01,		/* predefined range list */
+};
+
+/*
+ * Condensed form of the MP Configuration Table.
+ * This is created during a single pass through the MP Configuration
+ * table.
+ */
+typedef struct Aintr Aintr;
+typedef struct Bus Bus;
+typedef struct Apic Apic;
+
+typedef struct Bus {
+	uchar	type;
+	uchar	busno;
+	uchar	po;
+	uchar	el;
+
+	Aintr*	aintr;			/* interrupts tied to this bus */
+	Bus*	next;
+} Bus;
+
+typedef struct Aintr {
+	PCMPintr* intr;
+	Apic*	apic;
+	Aintr*	next;
+};
+
+typedef struct Apic {
+	int	type;
+	int	apicno;
+	ulong*	addr;			/* register base address */
+	int	flags;			/* PcmpBP|PcmpEN */
+
+	Lock;				/* I/O APIC: register access */
+	int	mre;			/* I/O APIC: maximum redirection entry */
+
+	int	lintr[2];		/* Local APIC */
+	int	machno;
+} Apic;
+
+enum {
+	MaxAPICNO	= 31,
+};
+
+enum {					/* I/O APIC registers */
+	IoapicID	= 0x00,		/* ID */
+	IoapicVER	= 0x01,		/* version */
+	IoapicARB	= 0x02,		/* arbitration ID */
+	IoapicRDT	= 0x10,		/* redirection table */
+};
+
+/*
+ * Common bits for
+ *	I/O APIC Redirection Table Entry;
+ *	Local APIC Local Interrupt Vector Table;
+ *	Local APIC Inter-Processor Interrupt;
+ *	Local APIC Timer Vector Table.
+ */
+enum {
+	ApicFIXED	= 0x00000000,	/* [10:8] Delivery Mode */
+	ApicLOWEST	= 0x00000100,	/* Lowest priority */
+	ApicSMI		= 0x00000200,	/* System Management Interrupt */
+	ApicRR		= 0x00000300,	/* Remote Read */
+	ApicNMI		= 0x00000400,
+	ApicINIT	= 0x00000500,	/* INIT/RESET */
+	ApicSTARTUP	= 0x00000600,	/* Startup IPI */
+	ApicExtINT	= 0x00000700,
+
+	ApicPHYSICAL	= 0x00000000,	/* [11] Destination Mode (RW) */
+	ApicLOGICAL	= 0x00000800,
+
+	ApicDELIVS	= 0x00001000,	/* [12] Delivery Status (RO) */
+	ApicHIGH	= 0x00000000,	/* [13] Interrupt Input Pin Polarity (RW) */
+	ApicLOW		= 0x00002000,
+	ApicRemoteIRR	= 0x00004000,	/* [14] Remote IRR (RO) */
+	ApicEDGE	= 0x00000000,	/* [15] Trigger Mode (RW) */
+	ApicLEVEL	= 0x00008000,
+	ApicIMASK	= 0x00010000,	/* [16] Interrupt Mask */
+};
+
+extern void ioapicrdtr(Apic*, int, int*, int*);
+extern void ioapicrdtw(Apic*, int, int, int);
+extern void ioapicinit(Apic*, int);
+extern void lapiconline(void);
+extern void lapicinit(Apic*);
+extern void lapicstartap(Apic*, int);
+extern void lapicerror(Ureg*, void*);
+extern void lapicspurious(Ureg*, void*);
+extern int lapicisr(int);
+extern int lapiceoi(int);
+extern void lapicicrw(int, int);
+
+extern void mpinit(void);
+extern void mpshutdown(void);
+extern int mpintrenable(Vctl*);
+
+extern _MP_ *_mp_;