273 lines
7.0 KiB
C
273 lines
7.0 KiB
C
/*-
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* Copyright (c) 2001 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "acpi.h"
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struct sapic *sapic_create(int, int, u_int64_t);
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#pragma pack(1)
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#define APIC_INTERRUPT_SOURCE_OVERRIDE 2
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#define APIC_NMI 3
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#define APIC_LOCAL_APIC_NMI 4
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#define APIC_LOCAL_APIC_OVERRIDE 5
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#define APIC_IO_SAPIC 6
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#define APIC_LOCAL_SAPIC 7
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#define APIC_PLATFORM_INTERRUPT 8
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typedef struct /* Interrupt Source Override */
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{
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APIC_HEADER Header;
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UINT8 Bus;
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UINT8 Source;
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UINT32 GlobalSystemInterrupt;
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UINT16 Flags;
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} INTERRUPT_SOURCE_OVERRIDE;
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typedef struct /* IO SAPIC */
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{
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APIC_HEADER Header;
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UINT8 IoSapicId; /* I/O SAPIC ID */
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UINT8 Reserved; /* reserved - must be zero */
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UINT32 Vector; /* interrupt base */
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UINT64 IoSapicAddress; /* SAPIC's physical address */
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} IO_SAPIC;
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typedef struct /* LOCAL SAPIC */
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{
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APIC_HEADER Header;
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UINT8 ProcessorId; /* ACPI processor id */
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UINT8 LocalSapicId; /* Processor local SAPIC id */
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UINT8 LocalSapicEid; /* Processor local SAPIC eid */
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UINT8 Reserved[3];
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UINT32 ProcessorEnabled: 1;
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UINT32 FlagsReserved: 31;
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} LOCAL_SAPIC;
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typedef struct /* PLATFORM INTERRUPT SOURCE */
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{
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APIC_HEADER Header;
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UINT16 Polarity : 2; /* Polarity of input signal */
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UINT16 TriggerMode: 2; /* Trigger mode of input signal */
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UINT16 Reserved1 : 12;
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UINT8 InterruptType; /* 1-PMI, 2-INIT, 3-Error */
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UINT8 ProcessorId; /* Processor ID of destination */
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UINT8 ProcessorEid; /* Processor EID of destination */
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UINT8 IoSapicVector; /* Value for redirection table */
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UINT32 GlobalSystemInterrupt; /* Global System Interrupt */
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UINT32 Reserved2;
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} PLATFORM_INTERRUPT_SOURCE;
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#pragma pack()
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static void
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parse_interrupt_override(INTERRUPT_SOURCE_OVERRIDE *override)
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{
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if (bootverbose)
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printf("\t\tBus=%d, Source=%d, Irq=0x%x\n", override->Bus,
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override->Source, override->GlobalSystemInterrupt);
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}
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static void
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parse_io_sapic(IO_SAPIC *sapic)
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{
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if (bootverbose)
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printf("\t\tId=0x%x, Vector=0x%x, Address=0x%lx\n",
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sapic->IoSapicId, sapic->Vector, sapic->IoSapicAddress);
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sapic_create(sapic->IoSapicId, sapic->Vector, sapic->IoSapicAddress);
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}
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static void
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parse_local_sapic(LOCAL_SAPIC *sapic)
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{
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if (bootverbose) {
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printf("\t\tProcessorId=0x%x, Id=0x%x, Eid=0x%x",
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sapic->ProcessorId, sapic->LocalSapicId,
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sapic->LocalSapicEid);
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if (!sapic->ProcessorEnabled)
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printf(" (disabled)");
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printf("\n");
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}
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#ifdef SMP
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if (sapic->ProcessorEnabled)
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cpu_mp_add(sapic->ProcessorId, sapic->LocalSapicId,
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sapic->LocalSapicEid);
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#endif
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}
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static void
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parse_platform_interrupt(PLATFORM_INTERRUPT_SOURCE *source)
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{
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if (bootverbose)
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printf("\t\tPolarity=%d, TriggerMode=%d, Id=0x%x, "
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"Eid=0x%x, Vector=0x%x, Irq=%d\n", source->Polarity,
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source->TriggerMode, source->ProcessorId,
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source->ProcessorEid, source->IoSapicVector,
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source->GlobalSystemInterrupt);
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}
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static int
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parse_madt(APIC_TABLE *madt, int countcpus)
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{
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char *p, *end;
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int maxid = 0;
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/*
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* MADT header is followed by a number of variable length
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* structures.
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*/
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end = (char *) madt + madt->Header.Length;
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for (p = (char *) (madt + 1); p < end; ) {
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APIC_HEADER *head = (APIC_HEADER *) p;
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if (countcpus) {
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if (head->Type == APIC_LOCAL_SAPIC) {
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LOCAL_SAPIC *sapic = (LOCAL_SAPIC *) head;
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if (sapic->ProcessorEnabled)
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if (sapic->ProcessorId > maxid)
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maxid = sapic->ProcessorId;
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}
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p = p + head->Length;
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continue;
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}
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if (bootverbose)
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printf("\t");
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switch (head->Type) {
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case APIC_PROC:
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if (bootverbose)
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printf("Local APIC entry\n");
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break;
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case APIC_IO:
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if (bootverbose)
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printf("I/O APIC entry\n");
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break;
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case APIC_INTERRUPT_SOURCE_OVERRIDE:
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if (bootverbose)
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printf("Interrupt source override entry\n");
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parse_interrupt_override
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((INTERRUPT_SOURCE_OVERRIDE *) head);
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break;
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case APIC_NMI:
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if (bootverbose)
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printf("NMI entry\n");
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break;
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case APIC_LOCAL_APIC_NMI:
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if (bootverbose)
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printf("Local APIC NMI entry\n");
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break;
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case APIC_LOCAL_APIC_OVERRIDE:
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if (bootverbose)
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printf("Local APIC override entry\n");
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break;
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case APIC_IO_SAPIC:
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if (bootverbose)
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printf("I/O SAPIC entry\n");
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parse_io_sapic((IO_SAPIC *) head);
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break;
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case APIC_LOCAL_SAPIC:
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if (bootverbose)
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printf("Local SAPIC entry\n");
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parse_local_sapic((LOCAL_SAPIC *) head);
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break;
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case APIC_PLATFORM_INTERRUPT:
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if (bootverbose)
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printf("Platform interrupt entry\n");
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parse_platform_interrupt
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((PLATFORM_INTERRUPT_SOURCE *) head);
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break;
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default:
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if (bootverbose)
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printf("Unknown type %d entry\n", head->Type);
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break;
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}
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p = p + head->Length;
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}
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return (maxid);
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}
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static int
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parse_table(int countcpus)
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{
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ACPI_PHYSICAL_ADDRESS rsdp_phys;
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RSDP_DESCRIPTOR *rsdp;
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XSDT_DESCRIPTOR *xsdt;
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ACPI_TABLE_HEADER *table;
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int i, count;
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if (AcpiOsGetRootPointer(0, &rsdp_phys) != AE_OK)
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return 0;
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rsdp = (RSDP_DESCRIPTOR *)IA64_PHYS_TO_RR7(rsdp_phys);
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xsdt = (XSDT_DESCRIPTOR *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
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count = (UINT64 *)((char *)xsdt + xsdt->Header.Length)
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- xsdt->TableOffsetEntry;
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for (i = 0; i < count; i++) {
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table = (ACPI_TABLE_HEADER *)
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IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[i]);
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if (bootverbose && !countcpus)
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printf("Table '%c%c%c%c' at %p\n", table->Signature[0],
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table->Signature[1], table->Signature[2],
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table->Signature[3], table);
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if (!strncmp(table->Signature, APIC_SIG, 4))
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return (parse_madt((APIC_TABLE *) table, countcpus));
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}
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return (0);
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}
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void
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ia64_probe_sapics(void)
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{
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parse_table(0);
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}
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/*
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* Return the maximum cpuid used by any cpu in the system. This will
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* return zero for systems with only one cpu.
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*/
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int
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ia64_count_aps(void)
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{
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return (parse_table(1));
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}
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