freebsd-dev/sys/ia64/acpica/madt.c

/*-
 * Copyright (c) 2001 Doug Rabson
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#include "acpi.h"

#pragma pack(1)

#define APIC_INTERRUPT_SOURCE_OVERRIDE 2
#define APIC_NMI		3
#define APIC_LOCAL_APIC_NMI	4
#define APIC_LOCAL_APIC_OVERRIDE 5
#define APIC_IO_SAPIC		6
#define APIC_LOCAL_SAPIC	7
#define APIC_PLATFORM_INTERRUPT	8
 
 
typedef struct  /* Interrupt Source Override */
{
    APIC_HEADER             header;
    UINT8                   Bus;
    UINT8                   Source;
    UINT32                  GlobalSystemInterrupt;
    UINT16                  Flags;
} INTERRUPT_SOURCE_OVERRIDE;

typedef struct  /* IO SAPIC */
{
    APIC_HEADER             header;
    UINT8                   IoSapicId;              /* I/O SAPIC ID */
    UINT8                   Reserved;               /* reserved - must be zero */
    UINT32                  Vector;                 /* interrupt vector index where INTI
                                                     * lines start */
    UINT64                  IoSapicAddress;         /* SAPIC's physical address */

} IO_SAPIC;


typedef struct  /* LOCAL SAPIC */
{
    APIC_HEADER             header;
    UINT16                  ProcessorId;            /* ACPI processor id */
    UINT16                  ProcessorEnabled: 1;    /* Processor is usable if set */
    UINT16                  Reserved1       : 15;
    UINT8                   LocalSapicId;           /* processor's local SAPIC id */
    UINT8                   LocalSapicEid;          /* processor's local SAPIC eid */

} LOCAL_SAPIC;


typedef struct  /* PLATFORM INTERRUPT SOURCE */
{
    APIC_HEADER             header;
    UINT16                  Polarity   : 2;         /* Polarity of input signal */
    UINT16                  TriggerMode: 2;         /* Trigger mode of input signal */
    UINT16                  Reserved1  : 12;
    UINT8                   InterruptType;          /* 1-PMI, 2-INIT, 3-Error */
    UINT8                   ProcessorId;            /* Processor ID of destination */
    UINT8                   ProcessorEid;           /* Processor EID of destination */
    UINT8                   IoSapicVector;          /* Value for redirection table */
    UINT32                  GlobalSystemInterrupt;  /* Global System Interrupt */
    UINT32                  Reserved2;

} PLATFORM_INTERRUPT_SOURCE;
 

#pragma pack()

 
static void
parse_interrupt_override(INTERRUPT_SOURCE_OVERRIDE *override)
{
	if (bootverbose)
		printf("\t\tBus=%d, Source=%d, Irq=0x%x\n",
		       override->Bus,
		       override->Source,
		       override->GlobalSystemInterrupt);
}

static void
parse_io_sapic(IO_SAPIC *sapic)
{
	if (bootverbose)
		printf("\t\tId=0x%x, Vector=0x%x, Address=0x%lx\n",
		       sapic->IoSapicId,
		       sapic->Vector,
		       sapic->IoSapicAddress);
	sapic_create(sapic->IoSapicId, sapic->Vector, sapic->IoSapicAddress);
}

static void
parse_local_sapic(LOCAL_SAPIC *sapic)
{
	if (bootverbose)
		printf("\t\tProcessorId=0x%x, Id=0x%x, Eid=0x%x\n",
		       sapic->ProcessorId,
		       sapic->LocalSapicId,
		       sapic->LocalSapicEid);
}

static void
parse_platform_interrupt(PLATFORM_INTERRUPT_SOURCE *source)
{
	if (bootverbose)
		printf("\t\tPolarity=%d, TriggerMode=%d, Id=0x%x, "
		       "Eid=0x%x, Vector=0x%x, Irq=%d\n",
		       source->Polarity,
		       source->TriggerMode,
		       source->ProcessorId,
		       source->ProcessorEid,
		       source->IoSapicVector,
		       source->GlobalSystemInterrupt);
}

static void
parse_madt(APIC_TABLE *madt)
{
	char			*p, *end;

	/*
	 * MADT header is followed by a number of variable length
	 * structures.
	 */
	end = (char *) madt + madt->header.Length;
	for (p = (char *) (madt + 1); p < end; ) {
		APIC_HEADER *head = (APIC_HEADER *) p;

		if (bootverbose)
			printf("\t");
		switch (head->Type) {
		case APIC_PROC:
			if (bootverbose)
				printf("Processor APIC entry\n");
			break;

		case APIC_IO:
			if (bootverbose)
				printf("I/O APIC entry\n");
			break;

		case APIC_INTERRUPT_SOURCE_OVERRIDE:
			if (bootverbose)
				printf("Interrupt source override entry\n");
			parse_interrupt_override
				((INTERRUPT_SOURCE_OVERRIDE *) head);
			break;

		case APIC_NMI:
			if (bootverbose)
				printf("NMI entry\n");
			break;

		case APIC_LOCAL_APIC_NMI:
			if (bootverbose)
				printf("Local APIC NMI entry\n");
			break;

		case APIC_LOCAL_APIC_OVERRIDE:
			if (bootverbose)
				printf("Local APIC override entry\n");
			break;

		case APIC_IO_SAPIC:
			if (bootverbose)
				printf("I/O SAPIC entry\n");
			parse_io_sapic((IO_SAPIC *) head);
			break;

		case APIC_LOCAL_SAPIC:
			if (bootverbose)
				printf("Local SAPIC entry\n");
			parse_local_sapic((LOCAL_SAPIC *) head);
			break;

		case APIC_PLATFORM_INTERRUPT:
			if (bootverbose)
				printf("Platform interrupt entry\n");
			parse_platform_interrupt
				((PLATFORM_INTERRUPT_SOURCE *) head);
			break;

		default:
			if (bootverbose)
				printf("Unknown type %d entry\n", head->Type);
			break;
		}

		p = p + head->Length;
	}
}

void
ia64_parse_xsdt(XSDT_DESCRIPTOR *xsdt)
{
	int			i, count;
	ACPI_TABLE_HEADER	*table;

	/*
	 * First find the MADT.
	 */
	count = (UINT64 *) ((char *) xsdt + xsdt->Header.Length)
		- &xsdt->TableOffsetEntry[0];
	for (i = 0; i < count; i++) {
		table = (ACPI_TABLE_HEADER *)
			IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[i]);
		if (bootverbose)
			printf("Table '%c%c%c%c' at %p\n",
			       table->Signature[0],
			       table->Signature[1],
			       table->Signature[2],
			       table->Signature[3],
			       table);
		if (!strncmp(table->Signature, APIC_SIG, 4)) {
			parse_madt((APIC_TABLE *) table);
		}
	}
}