7157eae462
aligned (or at least not cross a page boundary). However, it turns out that on at least one machine one table header does cross a page boundary. This caused problems with the MADT early probe as it uses the crash dump map to load ACPI tables by loading the RSDT/XSDT into pages 1 ... N and loading the header of each ACPI table header into page 0 looking for the MADT. However, if a table header crossed a page boundary, then page 1 would get trashed resulting in a panic. Fix this by reserving the first 2 pages for ACPI table headers (headers are less than a page in size, so 2 pages will be sufficient) and use pages 2 .. N for the RSDT and XSDT. Note: amd64 should probably be simplified to just use pmap_mapbios() for all these tables which will use the direct map and not need the crash dump hack. MFC after: 5 days Tested on: i386 Reported by: Pete French petefrench of ticketswitch.com
783 lines
21 KiB
C
783 lines
21 KiB
C
/*-
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* Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
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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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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/smp.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <machine/apicreg.h>
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#include <machine/frame.h>
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#include <machine/intr_machdep.h>
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#include <machine/apicvar.h>
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#include <machine/md_var.h>
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#include <machine/specialreg.h>
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#include <contrib/dev/acpica/acpi.h>
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#include <contrib/dev/acpica/actables.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/pci/pcivar.h>
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typedef void madt_entry_handler(ACPI_SUBTABLE_HEADER *entry, void *arg);
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/* These two arrays are indexed by APIC IDs. */
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struct ioapic_info {
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void *io_apic;
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UINT32 io_vector;
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} ioapics[MAX_APIC_ID + 1];
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struct lapic_info {
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u_int la_enabled:1;
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u_int la_acpi_id:8;
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} lapics[MAX_APIC_ID + 1];
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static int madt_found_sci_override;
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static ACPI_TABLE_MADT *madt;
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static vm_paddr_t madt_physaddr;
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static vm_offset_t madt_length;
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MALLOC_DEFINE(M_MADT, "madt_table", "ACPI MADT Table Items");
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static enum intr_polarity interrupt_polarity(UINT16 IntiFlags, UINT8 Source);
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static enum intr_trigger interrupt_trigger(UINT16 IntiFlags, UINT8 Source);
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static int madt_find_cpu(u_int acpi_id, u_int *apic_id);
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static int madt_find_interrupt(int intr, void **apic, u_int *pin);
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static void *madt_map(vm_paddr_t pa, int offset, vm_offset_t length);
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static void *madt_map_table(vm_paddr_t pa, int offset, const char *sig);
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static void madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg);
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static void madt_parse_interrupt_override(
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ACPI_MADT_INTERRUPT_OVERRIDE *intr);
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static void madt_parse_ints(ACPI_SUBTABLE_HEADER *entry,
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void *arg __unused);
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static void madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi);
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static void madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi);
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static int madt_probe(void);
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static int madt_probe_cpus(void);
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static void madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry,
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void *arg __unused);
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static int madt_probe_table(vm_paddr_t address);
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static void madt_register(void *dummy);
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static int madt_setup_local(void);
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static int madt_setup_io(void);
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static void madt_unmap(void *data, vm_offset_t length);
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static void madt_unmap_table(void *table);
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static void madt_walk_table(madt_entry_handler *handler, void *arg);
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static struct apic_enumerator madt_enumerator = {
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"MADT",
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madt_probe,
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madt_probe_cpus,
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madt_setup_local,
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madt_setup_io
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};
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/*
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* Code to abuse the crashdump map to map in the tables for the early
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* probe. We cheat and make the following assumptions about how we
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* use this KVA: pages 0 and 1 are used to map in the header of each
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* table found via the RSDT or XSDT and pages 2 to n are used to map
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* in the RSDT or XSDT. We have to use 2 pages for the table headers
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* in case a header spans a page boundary. The offset is in pages;
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* the length is in bytes.
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*/
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static void *
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madt_map(vm_paddr_t pa, int offset, vm_offset_t length)
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{
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vm_offset_t va, off;
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void *data;
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off = pa & PAGE_MASK;
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length = roundup(length + off, PAGE_SIZE);
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pa = pa & PG_FRAME;
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va = (vm_offset_t)pmap_kenter_temporary(pa, offset) +
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(offset * PAGE_SIZE);
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data = (void *)(va + off);
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length -= PAGE_SIZE;
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while (length > 0) {
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va += PAGE_SIZE;
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pa += PAGE_SIZE;
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length -= PAGE_SIZE;
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pmap_kenter(va, pa);
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invlpg(va);
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}
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return (data);
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}
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static void
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madt_unmap(void *data, vm_offset_t length)
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{
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vm_offset_t va, off;
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va = (vm_offset_t)data;
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off = va & PAGE_MASK;
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length = roundup(length + off, PAGE_SIZE);
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va &= ~PAGE_MASK;
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while (length > 0) {
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pmap_kremove(va);
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invlpg(va);
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va += PAGE_SIZE;
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length -= PAGE_SIZE;
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}
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}
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static void *
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madt_map_table(vm_paddr_t pa, int offset, const char *sig)
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{
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ACPI_TABLE_HEADER *header;
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vm_offset_t length;
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void *table;
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header = madt_map(pa, offset, sizeof(ACPI_TABLE_HEADER));
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if (strncmp(header->Signature, sig, ACPI_NAME_SIZE) != 0) {
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madt_unmap(header, sizeof(ACPI_TABLE_HEADER));
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return (NULL);
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}
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length = header->Length;
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madt_unmap(header, sizeof(ACPI_TABLE_HEADER));
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table = madt_map(pa, offset, length);
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if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
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if (bootverbose)
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printf("MADT: Failed checksum for table %s\n", sig);
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madt_unmap(table, length);
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return (NULL);
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}
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return (table);
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}
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static void
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madt_unmap_table(void *table)
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{
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ACPI_TABLE_HEADER *header;
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header = (ACPI_TABLE_HEADER *)table;
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madt_unmap(table, header->Length);
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}
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/*
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* Look for an ACPI Multiple APIC Description Table ("APIC")
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*/
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static int
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madt_probe(void)
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{
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ACPI_PHYSICAL_ADDRESS rsdp_ptr;
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ACPI_TABLE_RSDP *rsdp;
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ACPI_TABLE_RSDT *rsdt;
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ACPI_TABLE_XSDT *xsdt;
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int i, count;
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if (resource_disabled("acpi", 0))
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return (ENXIO);
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/*
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* Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
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* calls pmap_mapbios() to find the RSDP, we assume that we can use
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* pmap_mapbios() to map the RSDP.
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*/
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if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
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return (ENXIO);
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rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
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if (rsdp == NULL) {
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if (bootverbose)
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printf("MADT: Failed to map RSDP\n");
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return (ENXIO);
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}
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/*
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* For ACPI >= 2.0, use the XSDT if it is available.
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* Otherwise, use the RSDT. We map the XSDT or RSDT at page 1
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* in the crashdump area. Page 0 is used to map in the
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* headers of candidate ACPI tables.
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*/
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if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
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/*
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* AcpiOsGetRootPointer only verifies the checksum for
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* the version 1.0 portion of the RSDP. Version 2.0 has
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* an additional checksum that we verify first.
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*/
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if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
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if (bootverbose)
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printf("MADT: RSDP failed extended checksum\n");
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return (ENXIO);
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}
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xsdt = madt_map_table(rsdp->XsdtPhysicalAddress, 2,
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ACPI_SIG_XSDT);
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if (xsdt == NULL) {
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if (bootverbose)
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printf("MADT: Failed to map XSDT\n");
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return (ENXIO);
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}
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count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
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sizeof(UINT64);
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for (i = 0; i < count; i++)
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if (madt_probe_table(xsdt->TableOffsetEntry[i]))
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break;
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madt_unmap_table(xsdt);
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} else {
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rsdt = madt_map_table(rsdp->RsdtPhysicalAddress, 2,
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ACPI_SIG_RSDT);
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if (rsdt == NULL) {
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if (bootverbose)
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printf("MADT: Failed to map RSDT\n");
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return (ENXIO);
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}
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count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
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sizeof(UINT32);
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for (i = 0; i < count; i++)
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if (madt_probe_table(rsdt->TableOffsetEntry[i]))
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break;
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madt_unmap_table(rsdt);
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}
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pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));
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if (madt_physaddr == 0) {
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if (bootverbose)
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printf("MADT: No MADT table found\n");
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return (ENXIO);
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}
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if (bootverbose)
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printf("MADT: Found table at 0x%jx\n",
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(uintmax_t)madt_physaddr);
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/*
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* Verify that we can map the full table and that its checksum is
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* correct, etc.
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*/
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madt = madt_map_table(madt_physaddr, 0, ACPI_SIG_MADT);
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if (madt == NULL)
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return (ENXIO);
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madt_unmap_table(madt);
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madt = NULL;
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return (0);
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}
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/*
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* See if a given ACPI table is the MADT.
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*/
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static int
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madt_probe_table(vm_paddr_t address)
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{
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ACPI_TABLE_HEADER *table;
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table = madt_map(address, 0, sizeof(ACPI_TABLE_HEADER));
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if (table == NULL) {
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if (bootverbose)
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printf("MADT: Failed to map table at 0x%jx\n",
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(uintmax_t)address);
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return (0);
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}
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if (bootverbose)
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printf("Table '%.4s' at 0x%jx\n", table->Signature,
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(uintmax_t)address);
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if (strncmp(table->Signature, ACPI_SIG_MADT, ACPI_NAME_SIZE) != 0) {
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madt_unmap(table, sizeof(ACPI_TABLE_HEADER));
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return (0);
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}
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madt_physaddr = address;
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madt_length = table->Length;
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madt_unmap(table, sizeof(ACPI_TABLE_HEADER));
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return (1);
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}
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/*
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* Run through the MP table enumerating CPUs.
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*/
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static int
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madt_probe_cpus(void)
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{
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madt = madt_map_table(madt_physaddr, 0, ACPI_SIG_MADT);
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KASSERT(madt != NULL, ("Unable to re-map MADT"));
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madt_walk_table(madt_probe_cpus_handler, NULL);
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madt_unmap_table(madt);
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madt = NULL;
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return (0);
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}
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/*
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* Initialize the local APIC on the BSP.
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*/
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static int
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madt_setup_local(void)
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{
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madt = pmap_mapbios(madt_physaddr, madt_length);
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lapic_init(madt->Address);
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printf("ACPI APIC Table: <%.*s %.*s>\n",
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(int)sizeof(madt->Header.OemId), madt->Header.OemId,
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(int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId);
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/*
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* We ignore 64-bit local APIC override entries. Should we
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* perhaps emit a warning here if we find one?
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*/
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return (0);
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}
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/*
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* Enumerate I/O APICs and setup interrupt sources.
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*/
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static int
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madt_setup_io(void)
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{
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void *ioapic;
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u_int pin;
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int i;
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/* Try to initialize ACPI so that we can access the FADT. */
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i = acpi_Startup();
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if (ACPI_FAILURE(i)) {
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printf("MADT: ACPI Startup failed with %s\n",
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AcpiFormatException(i));
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printf("Try disabling either ACPI or apic support.\n");
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panic("Using MADT but ACPI doesn't work");
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}
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/* First, we run through adding I/O APIC's. */
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madt_walk_table(madt_parse_apics, NULL);
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/* Second, we run through the table tweaking interrupt sources. */
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madt_walk_table(madt_parse_ints, NULL);
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/*
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* If there was not an explicit override entry for the SCI,
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* force it to use level trigger and active-low polarity.
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*/
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if (!madt_found_sci_override) {
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if (madt_find_interrupt(AcpiGbl_FADT.SciInterrupt, &ioapic,
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&pin) != 0)
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printf("MADT: Could not find APIC for SCI IRQ %u\n",
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AcpiGbl_FADT.SciInterrupt);
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else {
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printf(
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"MADT: Forcing active-low polarity and level trigger for SCI\n");
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ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW);
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ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL);
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}
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}
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/* Third, we register all the I/O APIC's. */
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for (i = 0; i <= MAX_APIC_ID; i++)
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if (ioapics[i].io_apic != NULL)
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ioapic_register(ioapics[i].io_apic);
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/* Finally, we throw the switch to enable the I/O APIC's. */
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acpi_SetDefaultIntrModel(ACPI_INTR_APIC);
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return (0);
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}
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static void
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madt_register(void *dummy __unused)
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{
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apic_register_enumerator(&madt_enumerator);
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}
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SYSINIT(madt_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST,
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madt_register, NULL)
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/*
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* Call the handler routine for each entry in the MADT table.
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*/
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static void
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madt_walk_table(madt_entry_handler *handler, void *arg)
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{
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ACPI_SUBTABLE_HEADER *entry;
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u_char *p, *end;
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end = (u_char *)(madt) + madt->Header.Length;
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for (p = (u_char *)(madt + 1); p < end; ) {
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entry = (ACPI_SUBTABLE_HEADER *)p;
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handler(entry, arg);
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p += entry->Length;
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}
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}
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static void
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madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg)
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{
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ACPI_MADT_LOCAL_APIC *proc;
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struct lapic_info *la;
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switch (entry->Type) {
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case ACPI_MADT_TYPE_LOCAL_APIC:
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/*
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* The MADT does not include a BSP flag, so we have to
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* let the MP code figure out which CPU is the BSP on
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* its own.
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*/
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proc = (ACPI_MADT_LOCAL_APIC *)entry;
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if (bootverbose)
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printf("MADT: Found CPU APIC ID %u ACPI ID %u: %s\n",
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proc->Id, proc->ProcessorId,
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(proc->LapicFlags & ACPI_MADT_ENABLED) ?
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"enabled" : "disabled");
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if (!(proc->LapicFlags & ACPI_MADT_ENABLED))
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break;
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if (proc->Id > MAX_APIC_ID)
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panic("%s: CPU ID %u too high", __func__, proc->Id);
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la = &lapics[proc->Id];
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KASSERT(la->la_enabled == 0,
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("Duplicate local APIC ID %u", proc->Id));
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la->la_enabled = 1;
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la->la_acpi_id = proc->ProcessorId;
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lapic_create(proc->Id, 0);
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break;
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}
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}
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/*
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* Add an I/O APIC from an entry in the table.
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*/
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static void
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madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg __unused)
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{
|
|
ACPI_MADT_IO_APIC *apic;
|
|
|
|
switch (entry->Type) {
|
|
case ACPI_MADT_TYPE_IO_APIC:
|
|
apic = (ACPI_MADT_IO_APIC *)entry;
|
|
if (bootverbose)
|
|
printf(
|
|
"MADT: Found IO APIC ID %u, Interrupt %u at %p\n",
|
|
apic->Id, apic->GlobalIrqBase,
|
|
(void *)(uintptr_t)apic->Address);
|
|
if (apic->Id > MAX_APIC_ID)
|
|
panic("%s: I/O APIC ID %u too high", __func__,
|
|
apic->Id);
|
|
if (ioapics[apic->Id].io_apic != NULL)
|
|
panic("%s: Double APIC ID %u", __func__, apic->Id);
|
|
ioapics[apic->Id].io_apic = ioapic_create(apic->Address,
|
|
apic->Id, apic->GlobalIrqBase);
|
|
ioapics[apic->Id].io_vector = apic->GlobalIrqBase;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Determine properties of an interrupt source. Note that for ACPI these
|
|
* functions are only used for ISA interrupts, so we assume ISA bus values
|
|
* (Active Hi, Edge Triggered) for conforming values except for the ACPI
|
|
* SCI for which we use Active Lo, Level Triggered.
|
|
*/
|
|
static enum intr_polarity
|
|
interrupt_polarity(UINT16 IntiFlags, UINT8 Source)
|
|
{
|
|
|
|
switch (IntiFlags & ACPI_MADT_POLARITY_MASK) {
|
|
case ACPI_MADT_POLARITY_CONFORMS:
|
|
if (Source == AcpiGbl_FADT.SciInterrupt)
|
|
return (INTR_POLARITY_LOW);
|
|
else
|
|
return (INTR_POLARITY_HIGH);
|
|
case ACPI_MADT_POLARITY_ACTIVE_HIGH:
|
|
return (INTR_POLARITY_HIGH);
|
|
case ACPI_MADT_POLARITY_ACTIVE_LOW:
|
|
return (INTR_POLARITY_LOW);
|
|
default:
|
|
panic("Bogus Interrupt Polarity");
|
|
}
|
|
}
|
|
|
|
static enum intr_trigger
|
|
interrupt_trigger(UINT16 IntiFlags, UINT8 Source)
|
|
{
|
|
|
|
switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) {
|
|
case ACPI_MADT_TRIGGER_CONFORMS:
|
|
if (Source == AcpiGbl_FADT.SciInterrupt)
|
|
return (INTR_TRIGGER_LEVEL);
|
|
else
|
|
return (INTR_TRIGGER_EDGE);
|
|
case ACPI_MADT_TRIGGER_EDGE:
|
|
return (INTR_TRIGGER_EDGE);
|
|
case ACPI_MADT_TRIGGER_LEVEL:
|
|
return (INTR_TRIGGER_LEVEL);
|
|
default:
|
|
panic("Bogus Interrupt Trigger Mode");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Find the local APIC ID associated with a given ACPI Processor ID.
|
|
*/
|
|
static int
|
|
madt_find_cpu(u_int acpi_id, u_int *apic_id)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i <= MAX_APIC_ID; i++) {
|
|
if (!lapics[i].la_enabled)
|
|
continue;
|
|
if (lapics[i].la_acpi_id != acpi_id)
|
|
continue;
|
|
*apic_id = i;
|
|
return (0);
|
|
}
|
|
return (ENOENT);
|
|
}
|
|
|
|
/*
|
|
* Find the IO APIC and pin on that APIC associated with a given global
|
|
* interrupt.
|
|
*/
|
|
static int
|
|
madt_find_interrupt(int intr, void **apic, u_int *pin)
|
|
{
|
|
int i, best;
|
|
|
|
best = -1;
|
|
for (i = 0; i <= MAX_APIC_ID; i++) {
|
|
if (ioapics[i].io_apic == NULL ||
|
|
ioapics[i].io_vector > intr)
|
|
continue;
|
|
if (best == -1 ||
|
|
ioapics[best].io_vector < ioapics[i].io_vector)
|
|
best = i;
|
|
}
|
|
if (best == -1)
|
|
return (ENOENT);
|
|
*apic = ioapics[best].io_apic;
|
|
*pin = intr - ioapics[best].io_vector;
|
|
if (*pin > 32)
|
|
printf("WARNING: Found intpin of %u for vector %d\n", *pin,
|
|
intr);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Parse an interrupt source override for an ISA interrupt.
|
|
*/
|
|
static void
|
|
madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr)
|
|
{
|
|
void *new_ioapic, *old_ioapic;
|
|
u_int new_pin, old_pin;
|
|
enum intr_trigger trig;
|
|
enum intr_polarity pol;
|
|
char buf[64];
|
|
|
|
if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 &&
|
|
intr->GlobalIrq == 2) {
|
|
if (bootverbose)
|
|
printf("MADT: Skipping timer override\n");
|
|
return;
|
|
}
|
|
if (bootverbose)
|
|
printf("MADT: Interrupt override: source %u, irq %u\n",
|
|
intr->SourceIrq, intr->GlobalIrq);
|
|
KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero"));
|
|
if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) {
|
|
printf("MADT: Could not find APIC for vector %u (IRQ %u)\n",
|
|
intr->GlobalIrq, intr->SourceIrq);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Lookup the appropriate trigger and polarity modes for this
|
|
* entry.
|
|
*/
|
|
trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq);
|
|
pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq);
|
|
|
|
/*
|
|
* If the SCI is identity mapped but has edge trigger and
|
|
* active-hi polarity or the force_sci_lo tunable is set,
|
|
* force it to use level/lo.
|
|
*/
|
|
if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) {
|
|
madt_found_sci_override = 1;
|
|
if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) {
|
|
if (tolower(buf[0]) == 'e')
|
|
trig = INTR_TRIGGER_EDGE;
|
|
else if (tolower(buf[0]) == 'l')
|
|
trig = INTR_TRIGGER_LEVEL;
|
|
else
|
|
panic(
|
|
"Invalid trigger %s: must be 'edge' or 'level'",
|
|
buf);
|
|
printf("MADT: Forcing SCI to %s trigger\n",
|
|
trig == INTR_TRIGGER_EDGE ? "edge" : "level");
|
|
}
|
|
if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) {
|
|
if (tolower(buf[0]) == 'h')
|
|
pol = INTR_POLARITY_HIGH;
|
|
else if (tolower(buf[0]) == 'l')
|
|
pol = INTR_POLARITY_LOW;
|
|
else
|
|
panic(
|
|
"Invalid polarity %s: must be 'high' or 'low'",
|
|
buf);
|
|
printf("MADT: Forcing SCI to active %s polarity\n",
|
|
pol == INTR_POLARITY_HIGH ? "high" : "low");
|
|
}
|
|
}
|
|
|
|
/* Remap the IRQ if it is mapped to a different interrupt vector. */
|
|
if (intr->SourceIrq != intr->GlobalIrq) {
|
|
/*
|
|
* If the SCI is remapped to a non-ISA global interrupt,
|
|
* then override the vector we use to setup and allocate
|
|
* the interrupt.
|
|
*/
|
|
if (intr->GlobalIrq > 15 &&
|
|
intr->SourceIrq == AcpiGbl_FADT.SciInterrupt)
|
|
acpi_OverrideInterruptLevel(intr->GlobalIrq);
|
|
else
|
|
ioapic_remap_vector(new_ioapic, new_pin,
|
|
intr->SourceIrq);
|
|
if (madt_find_interrupt(intr->SourceIrq, &old_ioapic,
|
|
&old_pin) != 0)
|
|
printf("MADT: Could not find APIC for source IRQ %u\n",
|
|
intr->SourceIrq);
|
|
else if (ioapic_get_vector(old_ioapic, old_pin) ==
|
|
intr->SourceIrq)
|
|
ioapic_disable_pin(old_ioapic, old_pin);
|
|
}
|
|
|
|
/* Program the polarity and trigger mode. */
|
|
ioapic_set_triggermode(new_ioapic, new_pin, trig);
|
|
ioapic_set_polarity(new_ioapic, new_pin, pol);
|
|
}
|
|
|
|
/*
|
|
* Parse an entry for an NMI routed to an IO APIC.
|
|
*/
|
|
static void
|
|
madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi)
|
|
{
|
|
void *ioapic;
|
|
u_int pin;
|
|
|
|
if (madt_find_interrupt(nmi->GlobalIrq, &ioapic, &pin) != 0) {
|
|
printf("MADT: Could not find APIC for vector %u\n",
|
|
nmi->GlobalIrq);
|
|
return;
|
|
}
|
|
|
|
ioapic_set_nmi(ioapic, pin);
|
|
if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS))
|
|
ioapic_set_triggermode(ioapic, pin,
|
|
interrupt_trigger(nmi->IntiFlags, 0));
|
|
if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS))
|
|
ioapic_set_polarity(ioapic, pin,
|
|
interrupt_polarity(nmi->IntiFlags, 0));
|
|
}
|
|
|
|
/*
|
|
* Parse an entry for an NMI routed to a local APIC LVT pin.
|
|
*/
|
|
static void
|
|
madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi)
|
|
{
|
|
u_int apic_id, pin;
|
|
|
|
if (nmi->ProcessorId == 0xff)
|
|
apic_id = APIC_ID_ALL;
|
|
else if (madt_find_cpu(nmi->ProcessorId, &apic_id) != 0) {
|
|
if (bootverbose)
|
|
printf("MADT: Ignoring local NMI routed to "
|
|
"ACPI CPU %u\n", nmi->ProcessorId);
|
|
return;
|
|
}
|
|
if (nmi->Lint == 0)
|
|
pin = LVT_LINT0;
|
|
else
|
|
pin = LVT_LINT1;
|
|
lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI);
|
|
if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS))
|
|
lapic_set_lvt_triggermode(apic_id, pin,
|
|
interrupt_trigger(nmi->IntiFlags, 0));
|
|
if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS))
|
|
lapic_set_lvt_polarity(apic_id, pin,
|
|
interrupt_polarity(nmi->IntiFlags, 0));
|
|
}
|
|
|
|
/*
|
|
* Parse interrupt entries.
|
|
*/
|
|
static void
|
|
madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, void *arg __unused)
|
|
{
|
|
|
|
switch (entry->Type) {
|
|
case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE:
|
|
madt_parse_interrupt_override(
|
|
(ACPI_MADT_INTERRUPT_OVERRIDE *)entry);
|
|
break;
|
|
case ACPI_MADT_TYPE_NMI_SOURCE:
|
|
madt_parse_nmi((ACPI_MADT_NMI_SOURCE *)entry);
|
|
break;
|
|
case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
|
|
madt_parse_local_nmi((ACPI_MADT_LOCAL_APIC_NMI *)entry);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Setup per-CPU ACPI IDs.
|
|
*/
|
|
static void
|
|
madt_set_ids(void *dummy)
|
|
{
|
|
struct lapic_info *la;
|
|
struct pcpu *pc;
|
|
u_int i;
|
|
|
|
if (madt == NULL)
|
|
return;
|
|
for (i = 0; i < MAXCPU; i++) {
|
|
if (CPU_ABSENT(i))
|
|
continue;
|
|
pc = pcpu_find(i);
|
|
KASSERT(pc != NULL, ("no pcpu data for CPU %u", i));
|
|
la = &lapics[pc->pc_apic_id];
|
|
if (!la->la_enabled)
|
|
panic("APIC: CPU with APIC ID %u is not enabled",
|
|
pc->pc_apic_id);
|
|
pc->pc_acpi_id = la->la_acpi_id;
|
|
if (bootverbose)
|
|
printf("APIC: CPU %u has ACPI ID %u\n", i,
|
|
la->la_acpi_id);
|
|
}
|
|
}
|
|
SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_ANY, madt_set_ids, NULL)
|